• 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:
    A miter saw includes a base (2) having a plurality of grooves (20) formed in its bottom surface, a table (1) rotatable relative to the base (2), an angle adjusting device and a locking device. The Winkeleinstellvorrichtung comprises a fixedly connected to the table and with the table (1) rotatable body and provided on the body protuberance. The protuberance may be received in a groove of the plurality of grooves (20) in the base (2) and thus adjust the table (1) in a desired position with respect to the base (2). The locking device is operatively coupled to the table (1) and adapted to lock the table (1) at the desired rotational position. Miter angle adjustment has a more acceptable and convenient structure that allows miter angle adjustment and locking of the table relative to the base to be done with one hand.
    公开号:CH710398B1
    申请号:CH00446/16
    申请日:2013-12-17
    公开日:2017-02-28
    发明作者:Wu Mingting
    申请人:Ken Holdings Co Ltd；
    IPC主号:
    专利说明:

    Technical area
    The present invention relates to miter saws in general, and more particularly to a miter saw in which a fast Miter angle adjustment on the table and locking is possible.
    background
    Miter saws are commonly used power tools, which are mainly used to perform on a workpiece at a certain angle an oblique section. A typical miter saw includes a base, a table, a stop attached to the table in a predetermined positional relationship with the base, and a table-mounted motor assembly which is rotatable with the table and receives a saw blade. The table and base can pivot about a vertical axis, and the table and base rotate relative to one another during cutting operations, with an angle between the saw blade and a portion of the stop on which the workpiece supports being set to a value that is one desired angle of the oblique section corresponds. In an oblique cutting operation in practice, the table and the base of a miter saw usually have to be put into the following three states: firstly, a complete detachment between table and base, whereby the table and the base can be rotated independently relative to each other to desired Be able to make angle adjustments; second, setting the table and base to a predetermined angular position; third, locking the table and base in the specified angular position.
    To achieve the above conditions, most known miter saws use complicated angle adjustment and locking devices with difficult handling, including multiple operations where the operator must use both hands. So far, there is no miter saw with an acceptable construction and high practicability, in which the miter angle adjustment and the locking of base and table can be performed with one hand.
    Summary of the invention
    An object of the present invention is to provide a miter saw of an acceptable construction and high practicability, in which the miter angle adjustment and the locking of base and table can be performed with one hand.
    In accordance with this object, the present invention provides a miter saw comprising: a base having a plurality of grooves formed in its bottom surface; a base rotatable table; an angle adjusting device comprising a body fixedly connected to the table and rotatable with the table and a protuberance provided on the body, the protuberance being adapted to be received in a groove of the plurality of grooves of the base and thereby the table sets at an angle with respect to the base at a desired rotational position; and a locking device operatively coupled to the table and configured to lock the table at the desired rotational position.
    In a particular embodiment, the miter saw further comprises a support structure and the Winkeleinstellvorrichtung and the locking device are both connected via the support structure fixed to the table.
    In a particular embodiment, the body of the Winkeleinstellvorrichtung is a holding plate and one end of the retaining plate is fixedly connected to the support structure.
    In a particular embodiment, the Winkeleinstellvorrichtung further comprises a arranged in the vicinity of the holding plate sheet driving device, which is adapted to drive the holding plate so that it is between a first position in which the holding plate receiving the protuberance in a groove caused by the plurality of grooves of the base, and a second position in which the holding plate causes an outward movement of the protuberance from a groove of the plurality of grooves moves.
    In a particular embodiment, the sheet drive device comprises a relation to the holding plate arranged adjusting cam and a cam lever; the cam lever extends through the adjustment cam and is rotatably connected to the support structure; and the cam lever drives the adjustment cam so that it rotates and shifts the retaining plate so that it moves between the first and the second position.
    In a particular embodiment, the cam lever comprises a shaft and the adjustment cam defines a bore; the shaft extends through the bore and is rotatably connected to the support structure; and both the shaft and the bore have a non-circular radial cross-section.
    In a particular embodiment, the adjustment cam is disposed along an axial direction of the shaft between the support structure and the cam lever; an elastic retaining ring is disposed between the support structure and the adjustment cam; and an elastic retaining corrugated ring is disposed between the adjusting cam and the cam lever.
    In a particular embodiment, the locking device comprises a locking pin which extends through a bore in the support structure and comes into contact with an outer peripheral surface of the base; and a frictional force between an end surface of the locking pin and the outer peripheral surface of the base results in the locking of the table.
    In a particular embodiment, the locking device further comprises a locking lever and a friction plate; the locking lever has a locking cam fixedly arranged thereon; the other end face of the lock pin contacts the friction sheet, and when the lock lever rotates, the lock cam simultaneously displaces the friction sheet, thereby bringing the lock pin into contact with the outer peripheral surface of the base.
    In a particular embodiment, the locking lever is rotatably connected to the support structure by a rotatable pin.
    In a particular embodiment, the locking device further comprises a spring disposed along an axis direction of the locking pin and between the locking pin and the friction plate; one end of the spring is fixedly connected to the locking pin and the other end is connected by an open ring with the friction plate.
    In a particular embodiment, the axis of the bore and the locking pin both extend along a radial direction of the outer peripheral surface of the base.
    The present invention uses an angle adjusting device to achieve the adjustment of the relative rotational position between the base and the table, and uses the locking device to further realize the locking between the base and the table, and both the angle adjusting device and the locking device firmly connected to the table. With such a configuration, it becomes possible to construct a more acceptable and practical structure with which the miter angle adjustment and locking can be carried out with one hand. In addition, the connection of the table and the angle adjusting device with the base from the top and the bottom, respectively, by the table and the angle adjusting device creates a clamping action on the base which improves the positional adjustment as compared to conventional adjusting devices.
    Brief description of the drawings
    [0018]<Tb> FIG. 1 <SEP> is a schematic representation of a miter saw in accordance with one embodiment of the present invention.<Tb> FIG. 2 <SEP> schematically shows the angle adjusting device used in an embodiment of the present invention.<Tb> FIG. 3 <SEP> schematically shows the locking device used in an embodiment of the present invention. In these figures: 1 - table; 2 - base; 3 - retaining plate; 4 - locking lever; 5 - rotatable pin; 6 - screws; 7 - washers; 8 - spring washers; 9 - screw; 10 - friction plate; 11 - support structure; 12 - locking pin; 13 - spring; 14 - open ring; 15 - elastic retaining ring for use with a shaft; 16 - adjusting cams; 17 - elastic Wellhaltering for use with a shaft; 18 - cam lever; 19 - wave; 20 - grooves; 21 - protuberance; 22, 23 - holes; 24 - cam-receiving gap; 25 - hole; 26 - locking cams; 27 - screw; 30 - outer peripheral surface, and L - axis.
    Detailed description
    The miter saw of the present invention will be described in more detail in connection with Figs. 1 to 3 in the following description, which sets forth an exemplary embodiment of the present embodiment. It is understood that a person skilled in the art can make modifications and changes to the invention without departing from the actual scope and spirit of the invention.
    Referring now to Fig. 1, the embodiment provides a miter saw comprising at least a base 2 and a table 1 in coaxial pivotal connection. As used in this document, the term "coaxial rotary joint" means that the center axes of the base 2 and the table 1 coincide and extend along the same straight line, which is referred to as axis L in FIG. The table is rotatable about the axis L, while the base 2 is stationary. In other words, the table 1 can be rotated about the axis L with respect to the base 2. The base 2 and the table 1 have complementary shapes. In this embodiment, the base 2 is substantially similar to a ring, and the table 1 is substantially similar to a disk. The miter saw further comprises an angle adjusting device and a locking device, which are connected to the table 1 by the support structure 11. The relative rotational position between the base 2 and the table 1 is adjusted by the angle adjusting device. After being adjusted, the base 2 and the table 1 are locked by the locking device. The table 1 and the angle adjusting device are respectively connected to the base 2 from a lower side and an upper side of the base 2, respectively. More specifically, the table 1 is disposed on the base 2 from the top of the base 2, while the protuberance 21 of the angle adjusting device is received in a groove 20 of the base 2 from the bottom of the base 2 (as explained in more detail below).
    Referring to Fig. 2 in conjunction with Fig. 1, the Winkeleinstellvorrichtung comprises at least one retaining plate 3. One end of the retaining plate 3 is in fixed connection with the support structure 11. The retaining plate 3 has formed thereon the protuberance 21, the one for having on the underside of the base 2 preformed groove 20 complementary shape. The adjustment of the relative rotational position between the base 2 and the table 1 takes place when the protuberance 21 is received in a corresponding groove 20 from the bottom of the groove 20 ago and is dissolved again after the protuberance 21 moves out of the groove 20. In order to adjust the angle of the table 1 with respect to the base 2 at different rotational positions, a plurality of grooves 20 are formed on the underside of the base 2. The plurality of grooves 20 have the same shape and are either equally spaced or not. In addition, the number and arrangement of the grooves 20 can be adapted to practical needs. Thus, the table 1 can be adjusted with respect to the base 2 with a desired rotational position by placing the protuberance 21 of the holding plate 3 in one of the corresponding grooves 20.
    In this embodiment, the support structure 11, the table 1 and the holding plate 3 with the screws 6, the washers 7 and the spring washers 8 are fixed together. The screws 6 can be designed as M6 screws, the washers 7 can be designed as ø6 washers and the spring washers 8 can be designed as ø6 spring washers. Moreover, on the front side of the support structure 11, an M6 screw 27 for adjusting the distance to a mounting position of the support structure 11 is provided so as to ensure a sufficient area for two cams 16 and 26, which will be described in detail below, to rotate therein, to carry out the setting and locking operations.
    The angle adjusting device further comprises a sheet driving device. The retaining plate 3 is coupled to the sheet drive device. By the action of the sheet drive device, the holding plate 3 itself can be bent so that the protuberance 21 is moved out of the corresponding groove 20. The sheet metal driving device is rotatably connected to the support structure 11.
    More specifically, the sheet driving apparatus comprises, as shown in Fig. 2, a setting cam 16 and a cam lever 18. A shaft 19 is fixedly provided on the lever 18 and the shaft 19 extends successively through the bore 23 in the cam 16 and a bore 22nd in the support structure 11. The shaft 19 and the bore 23 have the same non-circular cross-section and therefore can rotate in a synchronized manner. In addition, the bore 22 and the support structure 11 have an inner diameter which is larger than the outer diameter of the shaft 19 and the shaft 19 can therefore rotate in the bore 22.
    Referring to Fig. 2, in this embodiment, the radial cross section of the shaft 19 is limited by a circular blunt center angle arc and the chord of the angle. Since the shape of the shaft to the shape of the bore 23 in the cam 16 is complementary, the shaft 19 and the cam 16 can therefore rotate coaxially and synchronously. The present invention is not limited with respect to this aspect, as the shaft 19 and bore 23 may be otherwise enabled, for example by a spline connection, to achieve synchronized rotation.
    Along an axial direction of the shaft 19 of the cam 16 between the support structure 11 and the cam lever 18 is arranged. An elastic retaining ring 15 for use with a shaft is provided between the support structure 11 and the cam lever 16, and an elastic shaft retaining ring 17 for use with a shaft is interposed between the cam 16 and the cam lever 18. The elastic retaining ring 15 may be implemented as an elastic φ8 ring for use with a shaft.
    After the sheet driving device, the support structure 11 and the holding plate 3 have been assembled, the shaft 19 and the support structure 11 are rotatably connected, in which the shaft 19 and the cam lever 18 can rotate about the axial direction of the shaft 19. The rotation of the cam lever 18 drives the cam 16 so that it rotates simultaneously and the cam 16 thus comes into contact with the sheet 3. As the cam 16 continues to rotate, it pushes against the retaining plate 3 and thereby bends the retaining plate 3. In this embodiment, the cam 16 is disposed above the retaining plate 3 and pushes down the retaining plate 3 to create the bend.
    To adjust the angle of rotation of the table 1 with respect to the base 2, the cam lever 18 is rotated to drive the cam 16 so that it rotates about a center line of the bore 23. When the cam 16 contacts the holding plate 3, the rotation of the cam 16 produces a downward force on the holding plate 3, by which the plate 3 is bent and thus the protuberance 21 on the holding plate 3 is moved out of the corresponding receiving groove 20 of the base 2 , Thereafter, the table 1 can be rotated freely with respect to the base 2.
    Referring to Fig. 3, the locking device comprises a locking pin 12. The locking pin 12 extends through a bore 25 in the support structure 11 and contacts an outer peripheral surface 30 of the base 2. Due to the contact between the front end surface of the locking pin 12 and the outer peripheral surface 30 of the base 2 occurs between the two surfaces, a frictional force, which hold the base 2 and the table 1 in a locked state.
    The locking device further comprises a locking drive device. The locking drive device comprises a locking lever 4 and a friction plate 10. A rear end surface of the locking pin 12 contacts the friction plate 10 and the friction plate 10 can be bent so that the locking pin 12 is driven so that it contacts the outer peripheral surface 30 of the base 2 and a Locking process performs. The bending of the friction plate 10 can be done by turning the locking lever 4.
    The locking lever 4 has a locking cam 26 which is fixedly mounted on this. The locking cam 26 presses against the friction plate 10 by the rotation of the locking lever 4 and therefore causes the friction plate 10 to bend. In this embodiment, the support structure 11 defines a gap 24 in which the friction sheet 10 is disposed, and the cam 26 rotates in the gap 24 so as to press against the friction sheet 10. One end of the friction plate 10 is fixed to the support structure 11 with a screw 9. The screw 9 can be designed as M4 screw. For a better understanding of the cam 16, reference is made to the cam 26. Compared to the similarly functioning, wheel-like structures used in conventional miter saws, the cams 26 and 16 are advantageous because they have a protuberance which presses against the friction plate 10 and the retaining plate 3, respectively, when the cams rotate.
    The locking lever 4 is rotatably connected by a rotatable pin 5 with the support structure 11.
    The lock driving device further includes a spring 13 that can be stretched and compressed in an axis direction of the locking pin 12. The spring 13 encloses the locking pin 12 and its one end is fixedly connected to the locking pin 12 and the other end is connected to the friction plate 10 through an open ring 14.
    In this embodiment, the locking of the table 1 relative to the base 2 by downward rotation of the locking lever 4 can be made to cause the cam 26 to press against the friction plate 10. The plate 10 then drives the locking pin 12 so that it moves forward and presses against the outer peripheral surface 30 of the base 2 at a front end of the driving locking pin 12. In this configuration, a frictional force between the front end of the lock pin 12 and the outer peripheral surface 30 can hold the table 1 and the base 2 in a locked state. In addition, the locking pin 12 enclosing spring 13 acts as a return means, which pulls the locking pin 12 back to the original position when the locking lever 4 is released.
    Referring to FIGS. 1 and 3, the axes of the bore 25 and the locking pin 12 both extend along a radial direction of the outer peripheral surface 30 of the base 2. The static frictional force existing in the locking configuration is therefore tangent to the outer peripheral surface 30 directed.
    As described above, the miter saw of the present invention uses an angle adjusting device to achieve the adjustment of the rotational position between the base and the table, and uses a locking device to further realize the locking between the base and the table. Both the Winkeleinstellvorrichtung and the locking device are mounted on a support structure which is fixedly connected to the table. With such a configuration, it becomes possible to construct a more acceptable and practical structure with which positional adjustment and locking can be carried out with one hand. In addition, the connection of the table and the angle adjusting device with the base from the top and the bottom, respectively, by the table and the angle adjusting device creates a clamping action on the base which improves the positional adjustment as compared to conventional adjusting devices.
    权利要求:
    Claims (11)
    [1]
    1. miter saw comprising:a base (2) having a plurality of grooves (20) formed in its bottom surface;a table (1) rotatable with respect to the base (2);an angle adjusting device comprising a body fixedly connected to the table (1) and rotatable with the table, and a protuberance (21) provided on the body, the protuberance (21) being formed in a groove (20) of the A plurality of grooves (20) of the base can be received and thereby the table (1) with respect to the base (2) at a desired rotational position with an angle and adjustsa locking device operatively coupled to the table (1) and configured to lock the table (1) at the desired rotational position.
    [2]
    A miter saw according to claim 1, further comprising a support structure (11), wherein the angle adjusting device and the locking device are both fixedly connected to the table (1) via the support structure (11).
    [3]
    3. miter saw according to claim 2, wherein the body of the Winkeleinstellvorrichtung is a holding plate (3), wherein one end of the holding plate (3) is fixedly connected to the support structure (11).
    [4]
    The miter saw according to claim 3, wherein the angle adjusting device further comprises a sheet drive device coupled to the holding plate (3), which is designed to drive the holding plate (3) such that it can move between a first position in which the holding plate (3 ) causes the receiving of the protuberance (21) in a groove (20) of the plurality of grooves (20) of the base (2), and a second position in which the holding plate (3) a movement outwards of the protuberance (21) Groove (20) caused by the multiplicity of grooves, can move.
    [5]
    5. miter saw according to claim 4, wherein the sheet drive device comprises a relation to the holding plate (3) arranged adjusting cam (16) and a cam lever (18); the cam lever (18) extends through the adjustment cam (16) and is rotatably connected to the support structure (11); and the cam lever (18) drives the adjustment cam (16) to rotate and displace the retaining plate (3) so as to move between the first and second positions.
    [6]
    A miter saw according to claim 5, wherein the cam lever (18) comprises a shaft (19) and a bore (23) is disposed in the adjustment cam (16); the shaft (19) extends through the bore (23) and is rotatably connected to the support structure (11); and both the shaft (19) and the bore (23) have a non-circular radial cross-section.
    [7]
    A miter saw according to claim 6, wherein said adjustment cam (16) is disposed along an axial direction of said shaft (19) between said support structure (11) and said cam lever (18); an elastic retaining ring (15) is disposed between the support structure (11) and the adjustment cam (16); and an elastic shaft retaining ring (17) is disposed between the adjustment cam (16) and the cam lever (18).
    [8]
    The miter saw of claim 1, wherein the locking device comprises a locking pin (12) extending through a bore (25) in the support structure (11) and contacting an outer peripheral surface (30) of the base (2); and a frictional force between an end surface of the locking pin (12) and the outer peripheral surface of the base results in the locking of the table (1).
    [9]
    A miter saw according to claim 8, wherein the locking device further comprises a locking lever (4) and a friction plate (10); the locking lever (4) has a locking cam (26) fixedly arranged thereon; the other end surface of the lock pin (12) contacts the friction plate (10), and when the lock lever (4) rotates, the lock cam (26) simultaneously displaces the friction plate (10), thereby bringing the lock pin (12) into contact with the outer peripheral surface the base.
    [10]
    10. miter saw according to claim 9, wherein the locking lever (4) by a rotatable pin (5) rotatably connected to the support structure (11).
    [11]
    11. The miter saw according to claim 8, wherein the axis of the bore (25) and the locking pin (12) both extend along a radial direction of the outer peripheral surface (30) of the base (2).
    类似技术:
    公开号 | 公开日 | 专利标题
    CH710398B1|2017-02-28|Miter saw.
    DE202011000036U1|2011-05-26|Plant for a miter saw
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    DE2119824A1|1971-12-02|Adjustable switch device
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    DE3132783C2|1991-07-25|
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    DE2214372A1|1972-10-12|Pipe cutting device
    AT516434B1|2017-06-15|Finishing unit with position adjustable copying device
    DE2913505C2|1982-06-09|Gripping cylinders for labeling machines
    DE917242C|1954-08-30|Device for drawing in the wire or rod material or the like on universal bending machines and the like
    DE2011488A1|1970-10-08|Workpiece feed device
    DE4124273A1|1992-02-06|CLAMPING DEVICE WITH MULTI-STEP OPENING
    DE1502213B2|1971-07-22|TRANSPORTABLE PRESS FOR PRESSING CONNECTING CLAMPS TO ELECTRICAL CABLES
    EP2186597A1|2010-05-19|Drive unit
    DE1503141B2|1971-02-11|Power-operated pressing tool to print on electrical connection terminals
    DE102020134870A1|2021-07-01|Transfer mechanism and transfer device
    DE102020111104B4|2022-02-24|High precision clutch mechanism
    DE202011101213U1|2012-08-21|Clamping element for panel saw
    DE102008017584B4|2015-07-23|Coupling arrangement of a sewing machine
    DE1228891B|1966-11-17|Device for the production of longitudinally spherical tooth flanks and for lifting the ram during the return stroke on roller shaping machines for cylindrical internal and external gears
    DE955192C|1956-12-27|Adjustable eccentric, especially for sewing machines
    同族专利:
    公开号 | 公开日
    CN103586532A|2014-02-19|
    AU2013404787A1|2016-04-14|
    US9533362B2|2017-01-03|
    US20170113288A1|2017-04-27|
    AU2013404787B2|2016-08-04|
    CN103586532B|2016-01-06|
    US10493542B2|2019-12-03|
    WO2015066951A1|2015-05-14|
    US20150314381A1|2015-11-05|
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    法律状态:
    2017-09-29| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: BELLERIVESTRASSE 203 POSTFACH, 8034 ZUERICH (CH) |
    2018-07-31| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    CN201310554216.8A|CN103586532B|2013-11-08|2013-11-08|Mitre saw|
    PCT/CN2013/089644|WO2015066951A1|2013-11-08|2013-12-17|Miter saw|
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