• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Electromagnetic actuator and safety shutdown device. An electromagnetic actuator and a safety shutdown device are provided with which it is possible to achieve ease of assembly work, miniaturization and the like on the premise that two coils are arranged on a fixed iron core. The electromagnetic actuator includes: a movable iron core 30, a fixed iron core 60 which is disposed opposite the movable iron core and includes a first notch portion 64 and a second notch portion 65, a bias spring 40 that biases the iron core movable in a direction away from the fixed iron core, a housing (10, 20) that supports the movable iron core to be movable and fixed and accommodates the fixed iron core, a first pin-shaped terminal 110 facing the first notch portion and projecting from the housing, a second pin-shaped terminal 120 facing the second notch portion and projecting from the housing, a first coil 90 that is wound around the iron core fixed and one end side of which is connected to the first pin-shaped terminal through the first notch portion, and a second coil 100 which is wound around the fixed iron core or and an end side of which is connected to the second pin-shaped terminal through the second notch portion. Accordingly, ease of assembly work and miniaturization can be achieved. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2782302A1
    申请号:ES201931121
    申请日:2019-12-18
    公开日:2020-09-11
    发明作者:Takashi Tatsuno；Taichi Okudera；Keito Murakami；Toshimitsu Sugawara
    申请人:Mikuni Corp；
    IPC主号:
    专利说明:

    [0002] Electromagnetic actuator and safety shutdown device
    [0004] Background
    [0006] Technical field
    [0008] The disclosure refers to an electromagnetic actuator that produces actuation by an electromagnetic force, in particular, to an electromagnetic actuator applied to a safety shutdown device of a gas stove or the like, and a safety shutdown device.
    [0010] Related art
    [0012] In a conventional gas stove or the like, an electromagnetic actuator of a safety shutdown device is known that includes: a fixed U-shaped iron core that is arranged in front of a moving iron core, an excitation coil that is wraps around the fixed iron core, a support that fixes the fixed iron core, a tubular pin-shaped terminal attached to an inner tubular portion of the support, and a cylindrical tubular terminal that is attached to an outer tubular portion of the support ( for example see patent literature 1).
    [0014] In this electromagnetic actuator, a coil is arranged for the fixed iron core, and an extension portion extending linearly on one side of the coil end is guided to the pin-shaped terminal through a through hole penetrating into the center of the fixed iron core, and is electrically connected to a front end portion of the pin-shaped terminal.
    [0016] In the above conventional electromagnetic actuator, a coil and a pin-shaped terminal are employed, but when two coils and two pin-shaped terminals are employed, it is not easy to make two extension portions on one side of the end of the two coils pass through the through hole of the fixed iron core, and there is a risk of causing complexity of the assembly work, an increase in size and the like.
    [0018] [Related Art Literature]
    [0019] [Patent literature]
    [0021] [Patent Literature 1] Japanese Open to the Public No. 2014-75962
    [0023] Summary
    [0025] [Problems to solve]
    [0027] The disclosure is made on the basis of the above circumstances, and an objective of the disclosure is to provide an electromagnetic actuator and a safety shutdown device using the same, with which it is possible to achieve the facilitation of assembly work, miniaturization and the like on the premise that two coils are arranged on a fixed iron core.
    [0029] [Means to solve problems]
    [0031] The electromagnetic actuator of the disclosure includes: a movable iron core, a fixed iron core that is disposed in front of the movable iron core and includes a first notch portion and a second notch portion, a bias spring that biases the core. iron movable in a direction away from the fixed iron core, a housing that supports the movable iron core to be movable and fixed and accommodates the fixed iron core, a first pin-shaped terminal that is arranged in front of the first portion notched and protrudes from the housing, a second pin-shaped terminal which is disposed opposite the second notch portion and protrudes from the housing, a first coil which is disposed around the fixed iron core, and an end side of which is connected to the first pin-shaped terminal through the first notch portion, and a second coil which is arranged around the fixed iron core and one side of extr emo of which is connected to the second pin-shaped terminal through the second notch portion.
    [0033] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the fixed iron core includes a first arm portion and a second arm portion, respectively, having an end surface facing the core of movable iron, and a lower connecting portion connecting the first arm portion and the second arm portion, and the first arm portion notch and the second notch portion are formed in the lower connecting portion.
    [0035] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the housing includes a tubular housing that supports the movable iron core to be movable, and a fixing bracket to which the tubular housing is connected and which fixed iron core fixed.
    [0037] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the fixing bracket is formed of a conductive material, and the other side of the end of the first coil and the other side of the end of the second coil They are connected to the fixing bracket.
    [0039] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the first coil is a thin wire arranged around the first portion of the arm through a spool, and the second coil is a thick wire directly arranged. around the second portion of the arm and having a wire diameter greater than that of the first coil.
    [0041] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the spool includes a pressure portion that presses the second coil disposed around the second arm portion.
    [0043] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the spool includes a terminal element on one end side that is connected to one end side of the first coil, and a terminal element on another side. end that is connected to the other end side of the first coil, the one end side of the first coil is connected to the first pin-shaped terminal through the terminal member of the one end side, and the other end side of the first coil is connected to the fixing bracket through the terminal member on the other end side.
    [0045] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the spool includes a first adjustment slot for adjusting and fixing the end member on the end side and a second adjustment slot for adjusting and fixing the member. terminal on the other end side.
    [0046] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the first adjustment slot and the second adjustment slot are formed to open in the same direction on the spool.
    [0048] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the terminal member of one end side includes a planar joint portion that is attached to one end side of the first coil, and the terminal member the other end side includes a flat joint portion that is attached to the other end side of the first coil.
    [0050] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the fixing bracket includes a first through hole through which the terminal member of an end side passes, and a second through hole through the which passes a linear extension portion defining one end side of the second coil.
    [0052] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which a support member formed of a resin material is included to support an intermediate region between the first pin-shaped terminal and the second pin-shaped terminal. pin, and the locking bracket includes an adjustment recess for adjusting the bracket member.
    [0054] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the fixing bracket includes a first recess for receiving the first pin-shaped terminal and a second recess for receiving the second pin-shaped terminal, a first sealing member is disposed between the first pin-shaped terminal and the first recess, and a second sealing member is disposed between the second pin-shaped end and the second recess.
    [0056] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which a flange member is included that fits and is fixed to the fixing bracket and is formed of a conductive material.
    [0058] In accordance with one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which a valve body is included that moves integrally with the movable iron core and opens and closes a fluid passage.
    [0059] According to one embodiment of the disclosure, the electromagnetic actuator may employ a configuration in which the clamp bracket includes a male connector that is defined around the first pin-shaped terminal and the second pin-shaped terminal.
    [0061] The safety shutdown device of the disclosure blocks the gas supply during shutdown of a gas stove and includes: an electromagnetic actuator including the valve body and male connector and having any of the above configurations, and a thermocouple unit including a female connector that is connected to the male connector of the electromagnetic actuator.
    [0063] According to one embodiment of the disclosure, the safety shutdown device may employ a configuration in which the thermocouple unit includes a first female terminal mounted on the first pin-shaped terminal, a second female terminal mounted on the second terminal pin-shaped, a first wire extending from the first female terminal that connects to a dry battery, a thermocouple, a second wire that connects the second female terminal and the thermocouple, and a third wire that extends from the thermocouple to connect to the same potential as the fixing bracket.
    [0065] [Effect]
    [0067] According to the electromagnetic actuator and the safety shutdown device having the above configurations, assembly work facilitation, miniaturization and the like can be achieved.
    [0069] Brief description of the drawings
    [0071] Fig. 1 is a system diagram showing an embodiment of a gas stove to which a safety shutdown device equipped with an electromagnetic actuator of the disclosure is applied.
    [0073] Fig. 2 is an external perspective view showing the electromagnetic actuator of the disclosure.
    [0074] Fig. 3 is an external perspective view showing a thermocouple unit included in the safety shutdown device of the disclosure.
    [0076] Figure 4 is a cross-sectional view in a plane parallel to an axis of the electromagnetic actuator shown in Figure 2.
    [0078] Figure 5 is a cross-sectional view passing through the shaft of the electromagnetic actuator shown in Figure 2.
    [0080] Figure 6 is a perspective view of a structural component from which a tubular housing and flange member forming part of a housing are removed in the electromagnetic actuator shown in Figure 2.
    [0082] Figure 7 is a cross-sectional view passing through an axis of the structural component shown in Figure 6.
    [0084] Figure 8 is an exploded perspective view in which the structural component shown in Figure 6 is viewed from the spool side.
    [0086] Figure 9 is an exploded perspective view in which the structural component shown in Figure 6 is viewed from the side of a first pin-shaped terminal and a second pin-shaped terminal.
    [0088] Figure 10 is an exploded perspective view showing a spool included in the electromagnetic actuator shown in Figure 2 and a terminal element on one end side and a terminal element on the other end side that are nested and attached to the spool .
    [0090] Fig. 11 is a perspective view showing a state in which the terminal member on one end side, the terminal member on the other end side, and a first coil are mounted to the spool included in the electromagnetic actuator shown in FIG. figure 2.
    [0092] Description of the achievements
    [0094] Hereinafter, embodiments of the disclosure are described with reference to attached drawings.
    [0095] A safety shutdown device M of the disclosure applies to a gas stove, for example, and includes, as shown in Figure 1, an electromagnetic actuator A and a thermocouple unit U that is detachably connected to electromagnetic actuator A.
    [0096] The electromagnetic actuator A is attached to a gas tap body 1 of the gas stove, and is arranged so that a valve body 50 thereof opens and closes a gas passage 1a.
    [0097] Herein, the gas cock body 1 functions as a portion connected to a reference potential (here, ground).
    [0099] In the safety shutdown device M applied to the gas stove, with respect to the electromagnetic actuator A, a first wire 6 of the thermocouple unit U is connected to a dry battery 3 through a control board 2, and the electromagnetic actuator A is actuated by a timer only for a predetermined time during power-up to keep the valve body 50 in an open state and opens the gas passage 1a, and keeps the valve body 50 in the open state by a force thermoelectromotive and opens the passage 1a during constant combustion, in which the thermoelectromotive force is generated by heating a thermosensitive portion 8c located at a leading end of a thermocouple 8 of the thermocouple unit U by the flame 4 of a burner.
    [0100] That is, the electromagnetic actuator A functions as a solenoid valve, which keeps the valve body 50 in an open state by the electrical energy of the dry battery 3 during the ignition of the gas stove and keeps the valve body 50 in the open state by the thermoelectromotive force of the thermocouple unit U during stable combustion after ignition.
    [0101] Furthermore, in the dry battery 3, a negative electrode is connected to the same potential (ground) as the body of the gas cock 1 through the control board 2.
    [0103] As shown in Figure 3, the thermocouple unit U includes: a female connector 5, a first female terminal 5a and a second female terminal 5b arranged in the female connector 5, a first wire 6 extending from the first female terminal 5a, a second wire 7 that extends from the second female terminal 5b, a thermocouple 8 and a third wire 9 that extends from the thermocouple 8.
    [0105] The first cable 6 includes a connector 6a connected to a connector on the control board 2 at the front end of the first cable 6, and is electrically connected to the dry battery 3.
    [0106] The second wire 7 is connected to the second female terminal 5b and a rod-shaped conductor 8a of the thermocouple 8.
    [0107] Thermocouple 8 includes rod-shaped conductor 8a and a tubular conductor 8b disposed outside of rod-shaped conductor 8a. The rod-shaped conductor 8a is formed into a solid form by an alloying material of Ni, Cu and Mn, for example. The tubular conductor 8b is formed into a multi-stage cylindrical shape by an alloying material of Ni, Cr and Fe, for example.
    [0108] Then, a front end region of the rod-shaped conductor 8a and a front end region of the tubular conductor 8b are joined to form the heat-sensitive portion 8c exposed to the flame 4 of the burner.
    [0109] The third wire 9 extends from the tubular conductor 8b of the thermocouple 8 and includes a connection terminal 9a at a forward end of the third wire 9. The connection terminal 9a is fastened to the body of the gas cock 1 by a screw together with a flange member 150 of the electromagnetic actuator A, and is connected to the same potential (ground) as a fixing bracket 20 of the electromagnetic actuator A through the body of the gas cock 1.
    [0111] As shown in Figures 2, 4 and 5, the electromagnetic actuator A includes a tubular housing 10 and the fixing bracket 20 used as a housing, a movable iron core 30, a thrust spring 40, a valve body 50, a fixed iron core 60, a spool 70, a terminal member 81 at one end and a terminal member 82 at the other end which are mounted on the spool 70, a first coil 90, a second coil 100, a first terminal on pin-shaped 110, a second pin-shaped terminal 120, a support member 130, O-rings 140 are used as a first sealing member and a second sealing member, and a flange member 150.
    [0113] As shown in Figures 2, 4 and 5, the tubular shell 10 is formed, using a resin material, in a multi-stage cylindrical shape centered on an S axis and includes a large diameter portion 11, a large diameter portion small diameter 12, a connecting jaw portion 13 formed in an end portion of the large diameter portion 11, a guide passage 14 formed in the small diameter portion 12, and a spring receiving portion 15 formed in the boundary between the large diameter portion 11 and the small diameter portion 12.
    [0114] The connecting jaw portion 13 is snap fit to an annular engagement groove 23 of the clamp bracket 20.
    [0115] The guide passage 14 is formed as a cylindrical hole centered on the S axis and guides an axis 31 of the movable iron core 30 to correspond in the direction of the S axis.
    [0116] The spring receiving portion 15 receives an end portion of the bias spring 40.
    [0118] Fixing bracket 20 is formed into a multi-stage disc shape using a conductive material such as brass, and includes, as shown in Figures 7 to 9, a fixing recess 21, an outer peripheral sloped surface portion 22 , the annular engagement groove 23, a first through hole 24, a second through hole 25, a first recess 26, a second recess 27, an adjustment recess 28 and a collar adjustment portion 29.
    [0120] Fixing recess 21 has a bottomed cylindrical shape to accommodate and retain a lower connecting portion 63 of fixed iron core 60.
    [0121] The outer peripheral inclined surface portion 22 is formed into a conical surface shape, and the other end side of the first coil 90 and the other end side of the second coil 100 are electrically connected.
    [0122] The first through hole 24 is formed in a position opposite a first notch portion 64 of the fixed iron core 60 in a straight line L1 parallel to the S axis, and is formed in a cylindrical shape extending parallel to the S axis. to allow passage of the terminal element of an end side 81 connected to an end side of the first coil 90.
    [0123] The second through hole 25 is formed in a position facing a second notch portion 65 of the fixed iron core 60 in a straight line L2 parallel to the S axis, and is formed in a cylindrical shape extending parallel to the S axis. to allow passage of a linear extension portion 102 defining an end side of the second coil 100.
    [0124] Herein, the first through hole 24 and the second through hole 25 are formed with the same internal diameter and the same linear dimension.
    [0125] Furthermore, the first through hole 24 and the second through hole 25 can be formed as a large through hole; However, by forming the first through hole 24 and the second through hole 25 separately, the passage area can be reduced and by enlarging a blocking wall of gas entering from the side of the valve body 50, the sealing function.
    [0126] The first recess 26 is formed in the straight line L1 coaxial with the first through hole 24, and is formed in a cylindrical shape extending in parallel with the axis S to receive the inner end portion of the first pin-shaped terminal 110 with a gap. The second recess 27 is formed in the straight line L2 coaxial with the second through hole 25, and is formed in a cylindrical shape extending in parallel with the axis S to receive the inner end portion of the second pin-shaped terminal 120. with a gap.
    [0127] Herein, the first recess 26 and the second recess 27 are formed with the same internal diameter and the same depth dimension.
    [0128] Furthermore, the first recess 26 and the second recess 27 can be formed as a large recess; However, by forming the first recess 26 and the second recess 27 separately, the passage area can be reduced and by enlarging the blocking wall of gas entering from the side of the valve body 50, the sealing function can be to get better.
    [0129] Fitting recess 28 is formed into a cylindrical shape with a bottom centered on axis S to conform to clamping member 130. A portion of the outer peripheral edge of fitting recess 28 is then subjected to a caulking process after it is tighten support member 130.
    [0131] The collar fitting portion 29 defines a collar portion 29a, a fitting portion 29b, a male connector 29c, and an annular groove 29d.
    [0132] The collar portion 29a is fitted to the body of the gas cock 1 and serves to position the flange member 150 fitted to the fitting portion 29b.
    [0133] The adjustment portion 29b serves to adjust and fix the flange member 150.
    [0134] The male connector 29c is formed in a stepped cylindrical shape centered on the axis S so that the female connector 5 of the thermocouple unit U is connected by a fitting.
    [0135] The annular groove 29d is formed in a region adjacent to the collar portion 29a so that a sealing O-ring is attached when the annular groove 29d is attached to the body of the gas cock 1.
    [0137] As shown in Figures 4 and 5, the movable iron core 30 is formed into a substantially disc shape using a magnetic material that has high magnetic permeability, and is supported by the tubular casing 10 through the shaft 31 to be able to alternate in the direction of the S axis.
    [0138] The shaft 31 is formed into a column shape by a metallic material such as brass. and is slidably supported by the guide passage 14 of the tubular casing 10, and one end side is connected to the movable iron core 30 by caulking processing and the other end side is mounted and connected to the valve body fifty.
    [0140] As shown in Figures 4 and 5, the bias spring 40 is a compression-type helical spring, one end portion of which is in contact with the spring receiving portion 15 of the tubular housing 10, and the other portion of The end is in contact with the spring receiving portion 15 adjacent the valve body 50. In addition, the bias spring 40 urges the movable iron core 30 in a direction away from the fixed iron core 60 in the direction of the S axis.
    [0142] As shown in Figures 4 and 5, the valve body 50 is formed substantially disk-shaped using a rubber or similar material, and is fitted and connected to the other side of the end of the shaft 31 in a state in which the spring receiving member 51 is disposed therein. The spring receiving member 51 is disk-shaped of a metallic material or the like to receive the other end portion of the bias spring 40.
    [0144] As shown in Figures 6 to 9, the fixed iron core 60 is formed, using a magnetic material with high magnetic permeability, such that an outer contour has a column shape centered on the S axis and is U-shaped when viewed from a direction perpendicular to the S axis. Fixed iron core 60 includes a first arm portion 61, a second arm portion 62, a lower connecting portion 63, a first notch portion 64, and a second notch portion 65.
    [0146] The first arm portion 61 extends in parallel with the axis S, includes an end surface 61a facing the plunger 30 at the forward end thereof, and holds the spool 70 around which the first coil 90 is wound. .
    [0147] The second arm portion 62 extends in parallel with the axis S, includes an end surface 62a facing the movable iron core 30 at the front end thereof, and holds the second coil 100.
    [0148] The first arm portion 61 and the second arm portion 62 are formed symmetrically with respect to a plane that includes the axis S.
    [0149] The lower connecting portion 63 connects the first arm part 61 and the second arm part 62 to form a magnetic path and fits into the adjustment recess 21 of the fixing bracket 20.
    [0150] Further, the lower connecting portion 63 is pressed by caulking the outer peripheral edge of the fitting recess 21 in a state of fitting into the fitting recess 21 so that the fixed iron core 60 is fixed to the fixing bracket 20.
    [0151] The first notch portion 64 is formed in a groove shape extending in the direction of the straight line L1 parallel to the axis S in a lateral portion of the lower connecting portion 63, and serves to allow passage of the terminal member of the an end side 81 connected to an end side of the first coil 90.
    [0152] The second notch portion 65 is formed in a groove shape extending in the direction of the straight line L2 parallel to the axis S in the other lateral portion of the lower connecting portion 63, and serves to allow passage of the portion linear extension 102 defining an end side of second coil 100.
    [0154] The spool 70 is injection molded using a resin material and includes, as shown in Figures 8 to 11, an adjustment hole 71 in which the first arm portion 61 of the fixed iron core 60 is mounted, a winding 72 around which the first coil 90, a base portion 73, a pressure portion 74, a first adjustment slot 75, and a second adjustment slot 76 are wound.
    [0156] As shown in Figure 6, the pressure portion 74 serves to press down a coil portion 101 so that the second coil 100 disposed around the second arm portion 62 does not fall out of the second arm portion 62.
    [0157] The first adjusting groove 75 forms a bent groove that opens in a lateral surface 73a of the base portion 73, so that the terminal member 81 at one end is adjusted and fixed.
    [0158] The second adjustment groove 76 forms a bent groove that opens in the side surface 73a of the base portion 73, so that the terminal member 82 at the other end is adjusted and fixed.
    [0160] Herein, the first adjustment slot 75 and the second adjustment slot 76 are formed to open at the common side surface 73a, that is, open in the same direction on the spool 70.
    [0161] Accordingly, it is easy to remove a die when the spool 70 is formed, and the terminal member 81 on one end side and the terminal member 82 on the other end side can be installed from the same direction, and a simplified configuration in the work of assembly and assembly work facilitation can be achieved.
    [0162] The terminal member 81 at one end is formed of a conductive material such as copper, and includes, as shown in Figure 10, a fitting portion 81a, a flat junction portion 81b, and a linear extension portion 81c. .
    [0163] The adjustment portion 81a has a bent shape to fit closely into the first adjustment slot 75 of the spool 70.
    [0164] The planar bonding portion 81b forms a planar surface parallel to the lateral surface 73a of the spool 70, so that an end side 92 of the first coil 90 is electrically connected by pulse heat bonding or the like.
    [0165] The linear extension portion 81c extends linearly in the direction of the straight line L1 parallel to the axis S, and is guided towards the first pin-shaped terminal 110 having a tubular shape through the first notch portion 64 of the core. iron plate 60 and the first through hole 24 of the fixation bracket 20. Furthermore, the front end region of the linear extension portion 81c is welded and electrically connected to a front end region of the first pin-shaped terminal 110.
    [0167] The terminal member 82 at the other end is formed of a conductive material such as copper, and includes, as shown in Figure 10, a fitting portion 82a, a flat joint portion 82b, and a linear extension portion 82c. .
    [0168] The adjustment portion 82a has a bent shape to fit closely in the second adjustment slot 76 of the spool 70.
    [0169] The planar bonding portion 82b forms a planar surface parallel to the lateral surface 73a of the spool 70, so that the other end side 93 of the first coil 90 is electrically connected by pulse heat bonding or the like.
    [0170] The linear extension portion 82c is inclined with respect to the S axis and extends linearly, and is welded to an outer peripheral inclined surface portion 22 of the fixation bracket 20 and electrically connected to the fixation bracket 20, as shown in the figures. 6 and 7.
    [0172] Herein, connecting the one end side 92 and the other end side 93 of the first coil 90 to the first pin-shaped terminal 110 and the fixing bracket 20 through the terminal member of the one end side 81 and the other end terminal member 82 instead of direct connection, it is possible to achieve facilitation of assembly work, facilitation of welding work, improvement of performance and the like. In particular, since the first coil 90 is a thin wire, the above effects are remarkable.
    [0173] Furthermore, since one end side 92 and the other end side 93 of the first coil 90 are attached to the flat joint portions 81b, 82b instead of being subjected to a cutting process, a distance from the second coil can be shortened. 100 which is disposed toward the one end side 92 and the other end side 93 of the first coil 90 in the direction perpendicular to the axis S. Accordingly, the fixed iron core 60 can be reduced in size, and the electromagnetic actuator A can be reduced in size as a whole.
    [0175] The first coil 90 is a thin wire that has a small wire diameter and is made of a conductive material such as copper, and is used to allow a current from the dry battery 3 to pass through.
    [0176] The first spool 90 includes a spool portion 91 wound around the winding portion 72 of the spool 70, and the one end side 92 and the other end side 93 extending from the spool portion 91.
    [0177] The one end side 92 extends along the base portion 73 of the spool 70 and is electrically connected to the flat junction portion 81b of the end-side terminal member 81 located on the side surface 73a.
    [0178] The other end side 93 extends along the base portion 73 of the spool 70 and is electrically connected to the flat junction portion 82b of the end-side terminal member 82 located on the side surface 73a.
    [0179] Herein, as the first coil 90 is a thin wire, the electrical resistance increases and the life of the dry battery 3 can be extended.
    [0181] The second coil 100 is a thick wire formed by a conductive material such as copper and having a wire diameter greater than that of the first coil 90, and is used to allow the passage of a current generated by the thermoelectromotive force of the thermocouple 8 .
    [0183] The second coil 100 includes the coil portion 101 fitted around the second arm portion 62 of the fixed iron core 60, the linear extension portion 102 extends from the coil portion 101 and defines an end side, and the portion Linear extension 103 extends from coil portion 101 and defines the other end side.
    [0184] In addition, the second coil 100 is molded in advance using an automatic molding machine or the like to define the coil portion 101, the linear extension portion 102, and the linear extension portion 103.
    [0185] The linear extension portion 102 extends linearly in the direction of the straight line L2 parallel to the axis S, and is guided towards the second pin-shaped terminal 120 having a tubular shape through the second notch portion 65 of the core. iron 60 and the second through hole 25 of the fixing bracket 20. Then, the front end region of the linear extension portion 102 is welded and electrically connected to a front end region of the second pin terminal 120.
    [0186] The linear extension portion 103 extends linearly in the direction parallel to the S axis and extends linearly with the front end region thereof inclined with respect to the S axis, and is welded to the outer peripheral inclined surface portion 22 of the bracket. fixture 20 and electrically connected to fixture bracket 20, as shown in Figure 6.
    [0187] Herein, as the second coil 100 is a thick line, the electrical resistance is reduced, and a driving action can be obtained to function as an electromagnet even when the electromotive force of the thermocouple 8 is small.
    [0189] As shown in Figures 7 and 9, the first pin-shaped terminal 110 is formed, using a conductive metallic material, in a cylindrical shape extending in the direction of the straight line L1 parallel to the axis S, and includes a inner tubular portion 111 disposed in the first recess 26, a necked intermediate tubular portion 112 held by the support member 130, and an outer tubular portion 113 projecting from the housing.
    [0190] The first pin-shaped terminal 110 is arranged on the straight line L1 to face the first notch portion 64 of the fixed iron core 60 through the first through hole 24.
    [0191] Furthermore, the first pin-shaped terminal 110 is electrically joined by welding W the front end region of the outer tubular portion 113 to the front end region of the linear extension portion 81c of the terminal member 81 on the side of an end that is connected. inserted along the straight line L1.
    [0193] As shown in Figures 7 and 9, the second pin-shaped terminal 120 is formed, using a conductive metallic material, in a cylindrical shape extending in the direction of the straight line L2 parallel to the axis S, and includes a inner tubular portion 121 disposed in the second recess 27, a necked intermediate tubular portion 122 supported by the support member 130, and an outer tubular portion 123 projecting from the housing.
    [0194] The second pin-shaped terminal 120 is arranged in the straight line L2 to make facing the second notch portion 65 of the fixed iron core 60 through the second through hole 25.
    [0195] Furthermore, the second pin-shaped terminal 120 is electrically joined by welding W the front end region of the outer tubular portion 123 to the front end region of the straight extension portion 102 that is inserted along the straight line L2 .
    [0197] Herein, the first pin-shaped terminal 110 and the second pin-shaped terminal 120 are formed so that the dimensions of the outer diameter of the inner tubular portion 111 and the inner tubular portion 121 are the same and the dimensions of the outer diameter of the outer tubular portion 113 and the outer tubular portion 123 are different.
    [0198] Accordingly, the two pin-shaped terminals can be identified by the difference in outer diameter between the outer tubular portion 113 and the outer tubular portion 123, and because the outer diameters of the inner tubular portion 111 and the tubular portion Internal 121 are the same, The same O-rings 140 can be used as the first sealing member and the second sealing member to achieve the cost reduction obtained by sharing parts.
    [0200] As shown in Figures 7 through 9, the support member 130 is formed, using an electrically insulating resin material, into a substantially columnar shape by insert molding to embed an intermediate region between the first pin-shaped terminal 110 and the second pin-shaped terminal 120.
    [0201] Furthermore, the support member 130 fits into the adjustment recess 28 of the fixture bracket 20 and undergoes a caulking process, and thus positions and holds the first pin-shaped terminal 110 in the straight line L1 and positions and holds the second pin-shaped terminal 120 in the straight line L2.
    [0203] The O-ring 140 is formed into an annular shape using a rubber material, and when the support member 130 holding the first pin-shaped terminal 110 and the second pin-shaped terminal 120 are mounted to the clamp bracket 20, the support member 130 fits respectively between the inner tubular portion 111 of the first pin-shaped terminal 110 and the first recess 26 and between the inner tubular portion 121 of the second pin-shaped terminal 120 and the second recess 27.
    [0204] Accordingly, the gas entering from the side of the valve body 50 can be completely blocked from passing through the adjustment recess 28 of the fixing bracket 20, and the sealing function can be improved.
    [0205] In particular, since the O-ring 140 seals the space between the members formed of a metallic material, the tightness is further improved.
    [0207] The flange member 150 is formed by pressing a conductive metallic material, for example, a steel plate or the like which will be formed as a long rhomboidal flat plate, and includes an adjustment hole 151 centered on the S axis and two circular holes 152 to through which a fixing screw passes, as shown in figures 2, 4 and 5.
    [0208] Furthermore, the flange member 150 fits into the fitting portion 29b of the fixing bracket 20 and is integrally fixed to the fixing bracket 20.
    [0210] Accordingly, the flange member 150 is formed separately from the fixation bracket 20, and therefore a material that is less expensive than the material of the fixation bracket 20 can be used and the flange member 150 can be properly adjusted accordingly. according to the way of fixing the gas cock body 1.
    [0212] The following describes the assembly work of the electromagnetic actuator A.
    [0213] Before work, the tubular casing 10 to which the movable iron core 30, the thrust spring 40, the valve body 50 and the like are mounted in advance, the fixing bracket 20, the fixed iron core 60, the reel 70 to which the terminal member 81 on one end side, the terminal member 82 on the other end side, and the first coil 90 are assembled in advance, the second coil 100 molded in advance, the support member 130 in which the The first pin end 110 and the second pin end 120 are insert molded, the two O-rings 140 and the flange member 150 are prepared.
    [0215] Subsequently, two O-rings 140 are respectively fitted into the inner tubular portion 111 of the first pin-shaped terminal 110 and the inner tubular portion 121 of the second pin-shaped terminal 120.
    [0216] Subsequently, the support member 130 approaches the adjustment recess 28 of the fixing bracket 20, an O-ring 140 is installed in the first recess 26, the other O-ring 140 fits in the second recess 27, and the support member 130 fits into trim recess 28.
    [0217] Then, the outer peripheral edge portion of the fitting recess 28 is subjected to a caulking process, and the clamping member 130 is fixed to the clamping bracket 20.
    [0219] Subsequently, the fixed core 60 approaches the fixing bracket 20 and the bottom of the The connection 63 fits into the fixing recess 21, so that the first notch portion 64 is aligned with the first through hole 24 on the straight line L1 and the second notch portion 65 is aligned with the second through hole 25 in the straight line L2. Subsequently, the outer peripheral edge portion of the fixing recess 21 is subjected to a caulking process, and the fixed iron core 60 is fixed to the fixing bracket 20.
    [0221] Subsequently, the second coil 100 is brought closer to the fixed iron core 60 in the direction of the S-axis and the coil portion 101 fits into the second arm portion 62; at the same time, the linear extension portion 102 is inserted into the second pin-shaped terminal 120 through the second through hole 25 in the straight line L2, and the linear extension portion 103 is brought into contact with the surface portion external peripheral inclined 22.
    [0222] Subsequently, the spool 70 approaches the fixed core 60 in the direction of the S-axis and fits into the first arm portion 61; at the same time, the linear extension portion 81c of the end-side terminal member 81 is inserted into the first pin-shaped terminal 110 through the first through hole 24 in the straight line L1, and the linear extension portion 82c of the terminal member 82 on the other end side is brought into contact with the outer peripheral inclined surface portion 22.
    [0224] Then, in a state that the coil portion 101 of the second coil 100 is pressed down by the pressure portion 74 of the spool 70, the linear extension portion 82c and the linear extension portion 103 are welded to the portion of outer peripheral inclined surface 22 of fixing bracket 20.
    [0225] Consequently, the other side of the end of the first coil 90 and the other side of the end of the second coil 100 are electrically connected to the fixing bracket 20.
    [0227] Subsequently, the front end region of the linear extension portion 81c is joined and electrically connected to the front end region of the outer tubular portion 113 of the first pin-shaped terminal 110 by welding W.
    [0228] Furthermore, the front end region of the linear extension portion 102 is electrically bonded and connected to the front end region of the outer tubular portion 123 of the second pin-shaped terminal 120 by W soldering.
    [0229] Subsequently, the tubular housing 10 approaches the fixing bracket 20 in the direction of the axis S, the connecting jaw portion 13 is snapped into the annular coupling groove 23 and thus the tubular housing 10 mounts to fixing bracket 20.
    [0230] By the above steps, the assembly of the electromagnetic actuator A is completed. Furthermore, the above assembly procedure is an example, and other procedures may be employed.
    [0232] As described above, in the assembly work of the electromagnetic actuator A, it is only necessary to move and assemble the components in the direction of the S-axis, and therefore, the automatic assembly can be performed on an automatic assembly line. Accordingly, an improvement in productivity, performance, a reduction in manufacturing cost and the like can be achieved.
    [0233] Furthermore, the female connector 5 of the thermocouple unit U is connected to the male connector 29c of the electromagnetic actuator A, thus completing the assembly of the safety shutdown device M.
    [0235] The following describes the operations of the safety shutdown device M on the gas stove.
    [0236] First, in the gas stove, when ignition is performed by a lighter based on an ignition operation using an external operation knob, an operation button, or the like, the first coil 90 is activated to generate an electromagnetic force by the dry battery 3 electrical energy based on a control signal emitted from the control panel control circuit 2.
    [0237] Also, during the ignition operation, the valve body 50 which is moved to an open state by a driving force interlocked with the operation knob, the operation button or the like is kept open when the movable iron core 30 is absorbed into the fixed iron core 60 by the electromagnetic force generated. Furthermore, the driving force that moves the valve body 50 in the valve opening direction acts only during the ignition operation.
    [0239] So when the gas flows to the burner through the gas passage 1a to ignite and the thermosensitive portion 8c is heated by the flame 4, the thermocouple 8 generates a thermoelectromotive force, and the second coil 100 is activated by this thermoelectromotive force to generate an electromagnetic force.
    [0240] Subsequently, the activation of the first coil 90 by the electrical energy of the dry battery 3 is cut off after a predetermined time has elapsed. Then, during constant combustion, the valve body 50 is kept in the open state only by a driving action obtained by the activation of the second coil 100. That is, the first coil 90 is used only for a predetermined time during the ignition to quickly stabilize combustion during ignition.
    [0242] On the other hand, when the flame of the gas stove is turned off by blowing, boiling and the like, the heating of the thermosensitive portion 8c of the thermocouple unit U stops, the thermoelectromotive force, that is, the electromagnetic force disappears, and the valve body 50 and the movable iron core 30 are pushed back by the thrust spring 40 to close the gas passage 1a. Consequently, the release of unburned gas is prevented.
    [0244] As described above, according to the electromagnetic actuator A and the safety shutdown device M, assembly work facilitation and automation, miniaturization, hermetic safety, productivity improvement, performance improvement and the like can be achieved. .
    [0246] In the above embodiment, as a fixed iron core, the U-shaped fixed iron core 60 is shown, but the description is not limited to this, and a fixed iron core having another shape can also be employed as long as This fixed iron core forms a magnetic path and has the first notch portion through which one side of the end of the first coil passes and the second notch portion through which one side of the end of the second coil passes .
    [0248] In the above embodiment, a way is shown in which the first coil 90 is arranged on the first arm portion 61 and the second coil 100 is arranged on the second arm portion 62, but the description is not limited thereto, and The first coil and the second coil may be disposed relative to one arm portion or a configuration may be adopted in which one coil is disposed across both arm portions, as long as one end side (the end member of the an end side) of the first coil relative to the first notch portion and an end side (the linear extending portion) of the second coil is passed relative to the second notch portion.
    [0250] In the above embodiment, a way is shown in which the first coil 90 is arranged in the first arm portion 61 through the spool 70, but the disclosure is not limited thereto, and a configuration in which the spool 70, the terminal member 81 on one end side and the terminal member 82 on the other end side are removed, and an end side of the first coil is connected directly to the first pin-shaped terminal and the other end side of the first coil is directly connected to the fixing bracket.
    [0252] In the above embodiment, a case is shown where the electromagnetic actuator A is applied as part of the safety shutdown device M, but the description is not limited to this, and the electromagnetic actuator A can also be applied to other electrical equipment and similar, as long as this electrical equipment uses the linear motion of the moving iron core as the driving force.
    [0254] As described above, as facilitation and automation of assembly work, miniaturization, hermetic security, productivity improvement, performance improvement and the like are achieved, of course, the electromagnetic actuator of the disclosure can be used in the device of safety shutdown and the like, and it is also useful in electrical equipment, machine parts and other fields that require miniaturization, assembly improvement, and the like.
    [0256] [List of reference signs]
    [0258] To electromagnetic actuator
    [0259] U thermocouple unit
    [0260] M safety shutdown device
    [0261] 3 dry battery
    [0262] 5 female connector
    [0263] 5th first female terminal
    [0264] 5b second female terminal
    [0265] 6 first wire
    [0266] 7 second wire
    [0267] 8 thermocouple
    [0268] 9 third wire
    [0269] 10 tubular shell (housing)
    [0270] 20 fixing bracket (housing)
    [0271] 24 first through hole
    [0272] 25 second through hole
    [0273] 26 first recess
    [0274] 27 second lowering
    [0275] 28 lace undercut
    [0276] moving iron core
    [0277] thrust spring
    [0278] valve body
    [0279] fixed iron core
    [0280] first portion of arm
    [0281] to end surface
    [0282] second arm portion
    [0283] to end surface
    [0284] lower connection portion
    [0285] first portion of notch
    [0286] second notch portion
    [0287] reel
    [0288] first adjustment slot
    [0289] second adjustment slot
    [0290] end member of one end side
    [0291] end member on other end side
    [0292] first coil
    [0293] one end side
    [0294] the other side of end
    [0295] 0 second coil
    [0296] 2 linear extension portion (one end side)
    [0297] 3 linear extension portion (the other end side)
    [0298] 0 first pin-shaped terminal
    [0299] 0 second pin-shaped terminal
    [0300] 0 support element
    [0301] 0 O-ring (first sealing member, second sealing member) 0 flange member
    权利要求:
    Claims (18)
    [1]
    1. An electromagnetic actuator, comprising:
    a moving iron core,
    a fixed iron core that is arranged opposite the movable iron core and comprises a first notch portion and a second notch portion,
    a bias spring that pushes the movable iron core in a direction away from the fixed iron core,
    a housing that supports the movable iron core to be movable and fixed and accommodates the fixed iron core,
    a first pin-shaped terminal which is arranged opposite the first notch portion and protrudes from the housing,
    a second pin-shaped terminal which is arranged opposite the second notch portion and protrudes from the housing,
    a first coil which is arranged around the fixed iron core and one of its ends is connected to the first pin-shaped terminal through the first notch portion, and
    a second coil which is arranged around the fixed iron core and one of its ends is connected to the second pin-shaped terminal through the second notch portion.
    [2]
    2. The electromagnetic actuator according to claim 1,
    wherein the fixed iron core comprises a first arm portion and a second arm portion, respectively, having an end surface facing the movable iron core and a lower connecting portion connecting the first arm portion and the second arm portion; Y
    the first notch portion and the second notch portion are formed in the lower connecting portion.
    [3]
    3. The electromagnetic actuator according to claim 2,
    wherein the housing comprises a tubular housing, which supports the movable iron core to be movable, and a fixing bracket to which the tubular housing is connected and which fixes the fixed iron core.
    [4]
    4. The electromagnetic actuator according to claim 3,
    wherein the fixing bracket is formed of a conductive material, and
    the other side of the end of the first coil and the other side of the end of the second coil are connected to the fixing bracket.
    [5]
    5. The electromagnetic actuator according to claim 4,
    wherein the first coil is a thin wire disposed around the first arm portion through a spool, and
    the second coil is a thick wire arranged directly around the second portion of the arm and having a wire diameter greater than that of the first coil.
    [6]
    6. The electromagnetic actuator according to claim 5,
    wherein the spool comprises a pressure portion that presses down the second coil disposed around the second arm portion.
    [7]
    7. The electromagnetic actuator according to claims 5 or 6,
    wherein the spool comprises a terminal member on the side of one end that is connected to one side of the end of the first coil and a terminal member on the side of the other end that is connected to the other side of the end of the first coil;
    the one end side of the first coil is connected to the first pin-shaped terminal through the terminal member of the one end side, and
    the other end side of the first coil is connected to the fixing bracket through the terminal member of the other end side.
    [8]
    8. The electromagnetic actuator according to claim 7,
    wherein the spool comprises a first adjustment slot for adjusting and locking the terminal member on one end side, and a second adjusting slot for adjusting and locking the terminal member on the other end side.
    [9]
    The electromagnetic actuator according to claim 8,
    wherein the first adjustment slot and the second adjustment slot are formed to open in the same direction on the spool.
    [10]
    The electromagnetic actuator according to any one of claims 7 to 9,
    wherein the terminal member of the one end side comprises a planar bonding portion that is attached to the one end side of the first coil, and
    the terminal member on the other end side comprises a flat joint portion which is attached to the other end side of the first coil.
    [11]
    The electromagnetic actuator according to any one of claims 7 to 10,
    wherein the fixing bracket comprises a first through hole, through which the terminal member of an end side passes, and a second through hole, through which passes a linear extension portion defining an end side of the second coil.
    [12]
    The electromagnetic actuator according to claim 11, comprising a support member that is formed of a resin material to hold an intermediate region between the first pin-shaped terminal and the second pin-shaped terminal,
    wherein the fixing bracket comprises an adjustment recess for adjusting the bracket member.
    [13]
    13. The electromagnetic actuator according to claim 12,
    wherein the fixing bracket comprises a first recess for receiving the first pin-shaped terminal and a second recess for receiving the second pin-shaped terminal;
    a first sealing member is disposed between the first pin-shaped terminal and the first recess, and
    a second sealing member is disposed between the second pin-shaped terminal and the second recess.
    [14]
    The electromagnetic actuator according to any one of claims 3 to 13, comprising
    a flange member that fits and is fixed to the fixing bracket and is formed of a conductive material.
    [15]
    The electromagnetic actuator according to any one of claims 1 to 14, comprising
    a valve body that moves integrally with the movable iron core and opens and closes a fluid passage.
    [16]
    16. The electromagnetic actuator according to claim 15,
    wherein the fixation bracket comprises a male connector that is defined around of the first pin-shaped terminal and the second pin-shaped terminal.
    [17]
    17. A safety shutdown device, which blocks the gas supply during shutdown of a gas stove, comprising:
    the electromagnetic actuator according to claim 16, and
    a thermocouple unit comprising a female connector that is connected to the male connector of the electromagnetic actuator.
    [18]
    18. The safety shutdown device according to claim 17,
    wherein the thermocouple unit comprises a first female terminal fitted to the first pin-shaped terminal, a second female terminal fitted to the second pin-shaped terminal, a first wire extending from the first female terminal to be connected to a dry battery, a thermocouple, a second wire that connects the second female terminal and the thermocouple, and a third wire that extends from the thermocouple to be connected to the same potential as the clamp bracket.
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    同族专利:
    公开号 | 公开日
    JP2020148222A|2020-09-17|
    ES2782302B2|2021-10-18|
    CN111678175A|2020-09-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS4124933Y1|1964-08-27|1966-12-20|
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    CN201547351U|2009-11-06|2010-08-11|宁海县奥凯燃气具有限公司|Gas flameout protection electromagnetic valve with connector provided with inverted hook|
    CN104879558A|2015-05-11|2015-09-02|奥可利电子有限公司|Connection structure between double-solenoid valve and thermocouple|
    CN104896169A|2015-05-11|2015-09-09|奥可利电子有限公司|Gas flameout protection electromagnetic valve|
    ES1140159U|2015-05-13|2015-06-18|Orkli, S.Coop.|Safety valve adapted to a gas combustión appliance |
    CN207397891U|2017-06-07|2018-05-22|浙江三国精密机电有限公司|A kind of gas valve coil combination structure|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    JP2019043897A|JP2020148222A|2019-03-11|2019-03-11|Electromagnetic actuator and flame failure safety device|
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