• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Provided is a method for manufacture of a seat for a vehicle, comprising a step of setting a return spring in a clamp jig, a step of clamping and fixing the return spring in the clamp jig, a step of inserting the return spring which is clamped in the clamp jig in an attachment unit, and a step of removing the return spring from the clamp jig.
    公开号:ES2604680A2
    申请号:ES201730198
    申请日:2017-02-17
    公开日:2017-03-08
    发明作者:Masami Namiki；Ryuji YONEKURA；Tetsuya Murakami
    申请人:Tachi S Co Ltd；
    IPC主号:
    专利说明:

    An embodiment will be described with reference to the figures. In the following description, the same components are designated using the same symbols, and a repeated explanation of them is also omitted. The figure may constitute a schematic expression with respect to the width, thickness, shape and the like of each component compared to the actual state. Said figure simply represents an example that is not intended to limit the interpretation of the present invention.
    Structure
    The structure of the vehicle seat according to the embodiment will be described with reference to Figs. 1 a
    5.
    Fig. 1 is a perspective view of the vehicle seat according to the embodiment. Fig. 2 is a perspective view of an essential part of the vehicle seat according to the embodiment. Fig. 3 is an enlarged view of Fig. 2. Fig. 4 is a side view of the essential part of the vehicle seat according to the embodiment. Fig. 5 is a side view of an essential part of the vehicle seat according to the embodiment.
    As shown in Fig. 1, a vehicle seat 10 according to the embodiment includes a seat cushion 20 and a backrest 30. The seat cushion 20 includes lateral supports 50 on both sides. The backrest 30 includes a headrest 40 at its top. The vehicle seat 10 includes a recliner 60 which will be described later, which allows the backrest 30 to be tiltedly coupled to the seat cushion 20 so that a rotational movement of the backrest 30, and the angle of Tilt can be adjusted and set in an adjustable way. The vehicle seat 10 is installed inside the vehicle so that the + Y direction corresponds to the front side of the vehicle.
    Referring to Figs. 2 to 4, a seat frame 11 constituting the vehicle seat 10 includes a seat cushion frame 21 constituting the seat cushion 20 and a backrest frame 31 constituting the backrest 30. The backrest frame 31 includes a side frame 12A, and the seat cushion frame 21 includes a side frame 12B. The side frame 12B includes a hook piece 22, a shaft 23, a lever 24, and stops 25, 26. The hook piece 22 extends closer to the side frame 12B than the tree 23. In other words, the length of the hook piece 22 from the side frame 12B in the X direction is larger than that of the shaft 23 from the side frame 12B in the X direction. The side frame 12A includes a hook piece 32. The lever 24 serves to unlock a locking device 61 of the recliner device 60, and has a base end fixed to the shaft
    23. The shaft 23 is located in the center of the rotation movement of the recliner 60.
    As shown in Fig. 5, at the base end of the lever 24, a return spring 27 constituted by the spiral spring is wound in the center, and an inner end 27A of the return spring 27 in the radial direction it is locked in a groove 23A of the tree 23 as a movable end. Although not shown in Fig. 5, an outer end 27B of the return spring 27 is locked in a recess 22A of the hook piece 22 fixed to the seat cushion frame 21 as a fixed end, for example. The return spring 27 applies a pushing force to bring the locking device 61 to the locked state. In other words, the return spring 27 drives an operating member 24A of the lever 24 to direct it upward (direction + Z) as shown in the figure. When the operating member 24a is operated downward (address "Z"), the locking device 61 is unlocked. In the locked state of the blocking device 61, the longitudinal direction of the groove 23A tilts to the right with respect to the + A direction. Consequently, the E-E line perpendicular to the direction


    Slot length 23A tilts with respect to the + Y direction.
    As shown in Fig. 5, a return spring 28 constituted by the spiral spring is fixed to the seat cushion frame 21 around the center of rotation (outer side of the return spring 27). An inner end 28A of the return spring 28 in the radial direction is fixed in a recess 22B of the hook piece 22 of the seat cushion frame 21 as the fixed end. The return spring 28 is the return spring that is thicker than the return spring 27. An outer end 28B of the return spring 28 is fixed in a recess 32A of the hook piece 32 fixed to the back frame 31 as a movable end. The hook part 32 is located above the hook part 22, and a base end 32B of the hook part 32 is fixed to the backrest frame 31. Therefore, in an off state resulting from the unlocking of the locking device 61, the impulse force in the direction of the frontal inclination is applied to the backrest frame 31 from the return spring 28 through the hook piece 32. As a result, the backrest 30 is rotated in the direction of frontal inclination under the force of impulse of the return spring 28 when the regulation state of the recliner 60 is released.
    As Fig. 5 shows, the seat cushion frame 21 includes stops 25, 26 at the front and rear of the return spring 28 in the radial direction at its outer circumference. In the unlocked state, the backrest frame 31 can be tilted forward until the hook piece 32 fixed to the backrest frame 31 rests on the front stop 25, and bends backward until the hook piece 32 rests on the 26 rear bumper.
    The vehicle seat 10 (seat frames 11, 13) according to the embodiment includes the hook part 22, the lever 24, the stops 25, 26, and the hook part 32 on the right side of the vehicle seat ( address side + X). However, they can be arranged on the left side of the vehicle seat (steering side - X) without being limited to the structure described above.
    Manufacturing method
    A method for manufacturing a vehicle seat according to the embodiment will be described with reference to Fig. 6.
    Fig. 6 is a flow chart depicting the method of manufacturing a vehicle seat according to the embodiment.
    First, the process step for preparing the seat frame 11 (step S11) as shown in Figs. 2 to 4. (a) The seat cushion frame and the backrest frame are assembled, each consisting of a tube. (b) A headrest guide (headrest support), a cable, and a support are attached to an upper tube (not shown) of the backrest frame by welding. (c) A side tower (side frame) 12A is fixed to the right side of the upper pipe (steering side + A) by welding. The side frame 12A integrates with the side frame 12B to be fixed next to the seat cushion frame. The side frame 12B is fixed to the side of the seat cushion frame by welding. The hook piece 22 configured to engage the inner end 27A of the return spring 27, the shaft 23 configured to engage the outer end 27B of the return spring 27, and the lever 24 are fixed to the side frame 12B. The hook piece 32 configured to engage the outer end 28B of the return spring 28 is fixed to the side frame 12A. (d) The side frame is also fixed to the left side (side of the X-direction) of the upper pipe by welding. The side frame is integrated with the one to be fixed to the left side of the seat cushion frame. The side frame is fixed to the left side of the seat cushion frame by welding. The hook piece 22 configured to engage the inner end 27A of the return spring 27, the shaft 23 configured to engage the outer end 27B of the return spring 27, and the lever 24 are not fixed to the side frame at the left end of the frame of seat cushion. The hook piece 32 configured to engage the outer end 28B of the return spring 28 is not fixed to the side frame on the left side of the backrest. (e) A slide rail not shown and the cushion panel are fixed to the seat cushion frame by welding to install a zigzag spring.
    Then, the return spring 27 for the lever 24 of the locking device 61 is fixed to the seat frame 11 (seat cushion frame 21) (step S12).
    Next, the return spring 28 for recline is fixed to the seat frame 11 (seat cushion frame 21) (step S13).
    The assembly of the seat frame 13 as shown in Fig. 5 is complete.
    The process of step S12 will be described in detail with reference to Figs. 7A to 9.
    Fig. 7A is a perspective view of a gripping tool according to the embodiment. Fig. 7A is a perspective view of a gripping tool according to the embodiment. Fig. 7A is a perspective view of a gripping tool according to the embodiment. Fig. 7A is a perspective view of a gripping tool according to the embodiment. Fig. 7A is a perspective view of a tool


    of grip according to the embodiment. Fig. 7B is a top view of the gripping tool according to the embodiment. Fig. 7C is a front view of the gripping tool according to the embodiment. Fig. 7D is a side view of the gripping tool according to the embodiment. Fig. 8A is a perspective view of a grip bushing according to the embodiment. Fig. 8B is a top view of the grip sleeve according to the embodiment. Fig. 8C is a front view of the grip sleeve according to the embodiment. Fig. 8D is a side view of the grip sleeve according to the embodiment. Fig. 9 is a flow chart explaining a method for connecting a return spring of the vehicle seat according to the invention.
    A gripping tool 100 will be described as the manufacturing device according to the embodiment. The gripping tool 100 is configured by fixing a gripping sleeve 100 to a pneumatic gripping element (force application device) 120 with fasteners 121A, 121B. A commercial product is available for pneumatic grip element 120. The grip sleeve is manufactured adapted to the vehicle seat to be manufactured. It is preferable to manufacture the grip sleeve so that it can be shared by different types of vehicle seats. Figs. 7A to 7D show the state in which the return spring 27 is held.
    The grip bushing 110 includes clamping members 111, 112 for holding the return spring 27, and operating members 113, 114 for opening and closing the clamping members 111, 112, respectively. The operating members 113 and 114 are connected by a connecting member 115. The operating member 113 includes a section 113A connected to the clamping member 111, and a section 113B to which force is applied from the pneumatic gripping element 120. The operating member 114 includes a section 114A connected to the clamping member 112, and a section 114B to which force is applied from the pneumatic gripping element 120. The operating members 113 and 114 are connected by means of the connecting member 115 so that the clamping members 111, 112 open and close at the same time that the connecting member 115 serves as a support point, and have the sections 113B of the operating member 113, and 114B of the operating member 114 serving as action points. Outside the restraint members 111, 112, a limitation member 116 is provided that limits their mobile range. A hole 115A is formed in the center of the connecting member 115 so that it can be used to secure the grip sleeve 110 to the pneumatic grip element 120. The limitation member 116 includes parts (cylindrical separators) 116C, 116D which are brought into contact when clamping members 111, 112, parts 116A, 116B are opened to connect parts 116C, 116D, fasteners (bolt 116E, nut 116F) to fix the parts 116A, 116C, 116B, and fixing elements (bolt 116G, nut 116H9 to fix the parts 116A, 116D, 116B. Each hole of the parts 116A, 116B is formed in such a way that it allows the bolts 116E , 116G move in the x direction.Therefore, it is possible to modify each mobile range of the clamping members 111, 112.
    It is preferable to use S45C as the carbon steel material for the mechanical structure to form the clamping members 111, 112. The respective components of the S45C are, for example, C: 0.42 - 0.48%, Si: 0.15 - 0.35%; Mn: 0.60 - 0.90%, P: 0.030% or less, and S: 0.035% or less. Each of the clamping members 111, 112 made of a green material will deform due to the repetitive operation carried out approximately 10 times, requiring the tool to be repaired on each occasion. However, the use of the carbon steel material for the mechanical structure is free from the aforementioned problem. The clamping members 111, 112 are fixed to the operating members 113A, 114A by welding. The clamping members 111, 112 include sections 111A, 112A in contact with the outer circumference of the spiral portion of the return spring 27, and sections 111B, 112B in contact with the spiral surface of the return spring 27. In the state in which the return spring 27 is held, the members 111 and 112 define a column-shaped space 117 at the same time that they are of sufficient size to allow insertion of the shaft 23. This allows the gripping tool 100 (grip bushing 110) be pressed along the tree. The outer end 27B of the return spring 27 is positioned so that it is locked in the cavity 22A of the hook piece 22, and the inner end 27A of the return spring 27 is positioned so that it is locked in the cavity 23A of the shaft 23. Since the outer end 27B of the return spring 27 is located outside the clamping members 111, 112, the return spring 27 will be visually recognized during the fixing of the return spring 27 to the seat frame 11.
    The air clamp120 is allowed to apply force to the operating members 113B, 114B. The force application device is not limited to the pneumatic grip element, but it can be a screw press such as a C-grip element.
    Next, the method for fixing the return spring using the gripping tool 100 (fixing according to the embodiment) will be described. (a) The seat frame 11 shown in Figs. 2 to 4. (b) The gripping tool 100 formed is prepared by attaching the gripping bush 110 to the pneumatic clamp element 120 as shown in Fig. 7A. (c) The return spring 27 is arranged in the grip sleeve 110 in the predetermined direction (step S121). The return spring 27 is oriented with respect to the grip sleeve 110 in the predetermined range, so that the outer end 27B and the inner end 27A of the return spring 27 are aligned with the cavity 22A of the hook piece 22, and slot 23A of tree 23, respectively. To make the seat frame 12 as shown in Fig. 5, the return spring 27 shown in Figs. 7A to 7D must be arranged upside down. (d) The return spring 27 is seized and fixed with the


    grip sleeve 110 (Step S122). The pneumatic grip element 120 applies force to the operating members 113B, 114B so that the return spring 27 is grasped by the clamping members 111, 112. When force is applied by the pneumatic grip element without requiring operator strength, the resulting workability is improved. (e) The return spring 27 seized with the grip sleeve is inserted into the cavity 22A of the hook piece 22 and the groove 23A of the shaft 23 (step S123). The grip tool 100 (grip sleeve 110) is arranged so that the Y direction shown in Fig. 5 is substantially parallel to the X direction shown in Figs. 7A to 7D. (e1) The gripping tool 100 is pushed in the direction "X" so that the outer end 27B of the return spring 27 is engaged in the cavity 22B of the hook piece 22 on the near side. (e2) Then, the grip tool 100 is turned counterclockwise so that the inner end 27A of the return spring 27 is pressed into the groove 23A of the shaft
    23. (e3) Finally, the grip tool 100 is turned slightly to the right to press the outer end 27B of the return spring 27 so that it engages in the cavity 22A of the hook piece 22 on the far side. In step (c) described above, the direction of the return spring 27 is aligned, and in step (d) the return spring 27 is fixed. Consequently, when the inner end 27A of the return spring 27 reaches the position for engagement with the groove 23A of the shaft 23, the gripping tool 100 (gripping bush 110) can be pressed along the shaft 23. It is only necessary press the grip tool 100 (grip sleeve 110) towards the section where the return spring 27 is inserted, resulting in better workability. (f) The return spring 27 is disengaged from the grip sleeve 110 (step S124). The application of force by the pneumatic gripping element 120 to the operating members 113B, 114B is stopped so that the return spring 27 is disengaged from the holding members 111, 112. When the force of the pneumatic grip element is released, the force of the operator is not necessary, which results in good workability.
    Next, the method for fixing the return spring without using the gripping tool 100 (fixing method according to the comparative example) will be described.
    (e1 ‘) The outer end 27B of the return spring 27 is hooked into the cavity 22B of the hook piece 22 on the near side for its fastening with the finger. (e2 ‘) Then the inner end 27A of the return spring 27 in the groove 23A of the shaft 23 is pressed with a first exclusive tool while holding the outer end 27B with the finger. (e3 ‘) Finally, the outer end 27B of the return spring 27 of the cavity 22 of the hook piece 22 on the near side is disengaged for engagement in the cavity 22A on the far side.
    As the fixing method according to the comparative example does not use the gripping tool 100, there are no process steps corresponding to those ranging from (b) to (d), and (f), but the steps corresponding to those ranging from (e1) to (e3) are executed in the process steps from (e1 ') to (e3').
    Meanwhile, as the fixing method according to the embodiment uses the gripping tool 100, the clamping and displacement of the return spring can be carried out at the same time. Therefore, the process steps from (e1) to (e3) can be implemented only by slightly displacing the grip sleeve 100.
    Therefore, the fixing method according to the embodiment provides a better workability than that of the fixing method according to the comparative example.
    The present invention made by the inventor has been described in detail based on the embodiment. It should be understood that the present invention is not limited to the embodiment described above, but can be modified arbitrarily.
    List of reference symbols
    10: vehicle seat,
    11: seat frame, 12A: side frame, 12B: side frame,
    13: seat frame,
    20: seat cushion,
    21: seat cushion frame,
    22: hook piece,22A: cavity,22B: cavity,
    23: tree,23A: slot,
    24: lever,24A: operation member,
    25: stop,
    26: stop,


    27: return spring,27A: inner end,27B: outer end,
    28: return spring,
    5 28A: inner end,28B: outer end,
    30: backup,
    31: backup frame,
    32: hook piece,
    10 32A: cavity, 32B: base end,
    40: headrest,
    50: side stand,
    60: reclining device, 15 61: locking device,
    100: grip tool,
    110: grip bushing,
    111: clamping member,
    112: clamping member, 20 113: operating member,
    114: operation member,
    115: connection member,
    116: limitation member,
    117: space, 25 120: pneumatic grip device (force application device)
    权利要求:
    Claims (15)
    [1]
    1. A method of manufacturing a vehicle seat comprising:
    (to) preparation of a vehicle cushion frame that includes a first hook piece to hook one end of a first return spring, and a shaft to hook the other end of the first return spring, a back frame to which a second one is fixed hook piece for engaging one end of a second return spring, and a lever that unlocks a locking device;
    (b) step of preparing a gripping tool that includes a gripping sleeve fixed to a pneumatic gripping element;
    (C) arrangement of the first return spring in the grip sleeve according to a predetermined direction;
    (d) grab and fix the first return spring with the grip sleeve;
    (and) insertion of the first return spring with the grip sleeve on the first hook piece and the shaft by forcefully pressing the grip sleeve along the shaft; Y
    (F) decoupling the first return spring from the grip sleeve.
    [2]
    2. The method for manufacturing a vehicle seat according to claim 1, wherein the gripping bush includes first and second clamping members; each upper end of the first and second clamping members has a cavity to which the
    first return spring; and in a state in which the first return spring is fixed, there is a column-shaped space defined by the first and second clamping members.
    [3]
    3. The method of manufacturing a vehicle seat according to claim 2, wherein each of the first and second clamping members is made of a carbon steel material for the mechanical structure.
    [4]
    Four. The method of manufacturing a vehicle seat according to claim 3, wherein the carbon steel material for the mechanical structure is S45C.
    [5]
    5. The method for manufacturing a vehicle seat according to claim 2, wherein one end of the first return spring is curved to be hooked to the first hook piece, and said end of the first return spring is disposed on an outer side of the First and second clamping members.
    [6]
    6. The method of manufacturing a vehicle seat according to claim 1, further comprises (g) engaging the second return spring on the first hook piece and the second hook piece.
    [7]
    7. The method of manufacturing a vehicle seat according to claim 6, wherein the first return spring applies a pushing force to bring a locking device to a locked state.
    [8]
    8. The method of manufacturing a vehicle seat according to claim 7, wherein the second return spring applies a pushing force to a rear frame in a forward tilt direction in a state in which the locking device is unlocked.
    [9]
    9. The method of manufacturing a vehicle seat according to claim 8, wherein the first and second return spring are spiral type, and the first return spring is disposed on an inner side of the second return spring.
    [10]
    10. A device for manufacturing a vehicle seat comprising: a grip bushing; and a force application device for applying force to the grip sleeve, where the grip sleeve includes a first holding member, a second holding member, and a
    operating member to open and close the first and second clamping members;
    the force application device applies force to the operating member so that the first and second clamping members are closed to grab a first return spring; Y
    The force application device does not apply force to the operating member so that the first and second clamping members open to disengage the return spring of the first and second clamping members.
    [11]
    eleven. The device for manufacturing a vehicle seat according to claim 10, wherein: each upper end of the first and second clamping members includes a cavity for fixing the return spring; Y
    In a state in which the return spring is gripped and fixed with the first and second clamping members, the first and second clamping members define a column-shaped space.
    [12]
    12. The device for manufacturing a vehicle seat according to claim 11, wherein the return spring is spiral type, which has a curved outer end such that it is engaged by a piece of

    hook fixed to a seat cushion frame, and having the other end disposed on an outer side of the first and second clamping members.
    [13]
    13. The device for manufacturing a vehicle seat according to claim 11, wherein the force application device 5 is a pneumatic clamping element.
    [14]
    14. The device for manufacturing a vehicle seat according to claim 13, wherein each of the first and second clamping members is made of a carbon steel material for the mechanical structure.
    [15]
    15. The device for manufacturing a vehicle seat according to claim 14, wherein the carbon steel material for the mechanical structure is S45C.


    FIG. 3










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    同族专利:
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    CN203390767U|2013-07-15|2014-01-15|乐清市东博机电有限公司|Tong head clamping mechanism for pressure clamp and pneumatic clamp tong with tong head clamping mechanism|
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    法律状态:
    2019-02-20| FG2A| Definitive protection|Ref document number: 2604680 Country of ref document: ES Kind code of ref document: B1 Effective date: 20190220 |
    优先权:
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    JP2014168616A|JP6298386B2|2014-08-21|2014-08-21|Manufacturing method and manufacturing apparatus for vehicle seat|
    JP2014-168616|2014-08-21|
    PCT/JP2015/068860|WO2016027567A1|2014-08-21|2015-06-30|Method and device for manufacture of seat for vehicle|
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