A limit switch structure and bracket with automatic reset

Abstract

The present invention discloses a limit switch structure and bracket with automatic reset, which is used to solve the technical problem of complicated operation of existing limit switches. The rotating shell in the present invention can be driven to rotate relative to the fixed shell; the rotating shell is provided with an unlocking button and an elastic positioning card column, and the fixed shell is provided with a plurality of positioning card holes distributed along the rotation trajectory of the elastic positioning card column; the elastic positioning card column extends out of the rotating shell and is movably inserted into the positioning card hole to limit the rotation of the rotating shell relative to the fixed shell, and the unlocking button is used to drive the elastic positioning card column to move and make the elastic positioning card column disengage from the positioning card hole; the fixed shell is provided with elastic limiting pieces with the same number as the positioning card holes; after the unlocking button drives the elastic positioning card column to disengage from the positioning card hole, the elastic limiting piece is used to limit the reset of the unlocking button.

Description

Technical Field

[0001] The invention relates to the technical field of limit switch design, and in particular to a limit switch structure and a bracket with automatic resetting. Background Art

[0002] For the widely used limit switches, after the operator presses the limit switch, the two components that can move relative to each other cannot move relative to each other. The operator needs to press the limit switch again before the two components can move relative to each other. The structure of the limit switch needs to be operated twice to complete the two actions of limiting and releasing, which makes the operation process more complicated. Furthermore, when the operator needs to push the component after pressing the limit switch, he often cannot free his hands to press or release the limit switch.

[0003] Therefore, in order to solve the above-mentioned technical problems, finding a limit switch structure with automatic resetting has become an important topic studied by those skilled in the art. Summary of the invention

[0004] The embodiment of the invention discloses a limit switch structure with automatic resetting and a bracket, which are used to solve the technical problem of complicated operation of the existing limit switch.

[0005] An embodiment of the present invention provides a limit switch structure with automatic reset, comprising a fixed housing and a rotating housing, wherein the rotating housing can be driven to rotate relative to the fixed housing;

[0006] The rotating shell is provided with an unlocking button and an elastic positioning post, and the fixed shell is provided with a plurality of positioning holes distributed along the rotation track of the elastic positioning post;

[0007] The elastic positioning post extends out of the rotating shell and is movably inserted into the positioning hole to limit the rotation of the rotating shell relative to the fixed shell, and the unlocking button is used to drive the elastic positioning post to move and disengage the elastic positioning post from the positioning hole;

[0008] The fixed housing is provided with elastic limiting members having the same number as the positioning holes;

[0009] After the unlock button drives the elastic positioning post to disengage from the positioning hole, the elastic limiting member is used to limit the reset of the unlock button.

[0010] Optionally, the unlocking button includes a button body and a first spring;

[0011] The rotating shell is provided with a receiving cavity for receiving the first spring, the first spring is placed in the receiving cavity, and the first end of the first spring abuts against the cavity wall of the receiving cavity;

[0012] A pressing plate is disposed on the bottom surface of the button body, and the pressing plate abuts against the first spring;

[0013] When the unlock button is in a pressed-down state, the pressure plate compresses the first spring.

[0014] Optionally, the elastic positioning clamping column comprises a clamping column body and a second spring;

[0015] A pressure block is connected to the non-insertion end of the clamp body, a first inclined surface is provided on the outer side wall of the pressure block facing the button body, a first end of the second spring is fixedly connected to the rotating shell, and a second end of the second spring is fixedly connected to the pressure block;

[0016] A second inclined surface matching the first inclined surface is provided on the non-pressing end of the button body;

[0017] When the unlock button is in a pressed state, the second inclined surface slides along the first inclined surface to drive the clamping column body to separate from the positioning clamping hole.

[0018] Optionally, the elastic limiting member includes a limiting clamping column and a third spring;

[0019] The fixed housing is provided with a mounting hole, the limiting clamping column is located in the mounting hole, the first end of the third spring is fixedly connected to the mounting hole, and the second end of the third spring is fixedly connected to the first end of the limiting clamping column;

[0020] The bottom surface of the button body is provided with a limit baffle matched with the limit clamping column;

[0021] When the unlock button is not pressed, the bottom end of the limit baffle presses against the limit clamping column and drives the limit clamping column to press against the third spring;

[0022] When the unlock button is in a pressed state, the bottom end of the limit baffle is separated from the limit clamping column, and the limit clamping column contacts the outer side wall of the limit baffle under the elastic force of the third spring to limit the reset of the unlock button.

[0023] Optionally, a third inclined surface is provided at the bottom end of the limit baffle;

[0024] The second end of the position-limiting clamping column is provided with a fourth inclined surface matched with the third inclined surface;

[0025] When the unlock button is not pressed, the third inclined surface presses against the fourth inclined surface, and the limiting clamp column compresses the third spring;

[0026] When the unlock button is in a pressed state, the third inclined surface slides along the fourth inclined surface, and the limiting clamping column contacts the outer side wall of the limiting baffle under the elastic force of the third spring to limit the reset of the unlock button.

[0027] Optionally, a guide slider is connected to the rotating shell;

[0028] The fixed housing is provided with an arc-shaped sliding groove matching the guide sliding block;

[0029] The guide slider is slidably connected in the arc-shaped slide groove;

[0030] When the rotating shell rotates relative to the fixed shell, the guide sliding block slides along the arc-shaped sliding groove.

[0031] Optionally, a guide groove is provided on the button body;

[0032] The rotating shell is provided with a sliding column matched with the guide sliding groove;

[0033] When the unlocking button is driven to move, the guide slide groove slides along the slide column.

[0034] Optionally, the number of the guide slots is two, and the number of the sliding posts is two;

[0035] The two guide slots are arranged at intervals along the length direction of the button body.

[0036] Optionally, a rotating shaft is connected to the fixed shell, and the rotating shell is rotatably connected to the rotating shaft.

[0037] An embodiment of the present invention provides a bracket, comprising a bracket body and a limit switch structure with automatic reset as described in any one of the above items;

[0038] The fixed housing with the limit switch structure having automatic resetting is fixedly connected to the bracket body.

[0039] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0040] In this embodiment, when the operator needs to operate the rotating shell to rotate, he only needs to press the unlock button. After the unlock button is pressed, it drives the elastic positioning card column to move and disengage the elastic positioning card column from the positioning card hole, and the unlock button cannot be reset due to the limiting effect of the elastic limiting member. At this time, the rotating shell can rotate relative to the fixed shell. When the unlock button follows the movement of the rotating shell, it will be separated from the elastic limiting member. Therefore, the unlock button returns to the initial position (reset). When the rotating shell rotates by a preset angle, the elastic positioning card column is automatically clamped into another positioning card hole by its own elastic force, thereby limiting the rotating shell from continuing to rotate. If the operator needs to rotate the rotating shell, the above operation process can be repeated. Through the above design, the operator only needs to operate the unlock button once to unlock the rotation of the rotating shell, and during the rotation of the rotating shell, it can automatically complete the locking limit. The operator does not need to operate the unlock button twice, which greatly simplifies the operator's operation process and brings a better operation experience to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 It is an overall schematic diagram of a limit switch structure with automatic reset provided in the present invention;

[0043] Figure 2 An exploded view of a limit switch structure with automatic reset provided in the present invention;

[0044] Figure 3 It is a structural schematic diagram of a limit switch structure with automatic reset provided in the present invention when the unlocking button is not pressed;

[0045] Figure 4 It is a schematic diagram of the cooperation between the unlocking button, the elastic positioning column and the elastic limiting member in a limit switch structure with automatic reset provided by the present invention;

[0046] Figure 5 A schematic diagram of the position of a first spring in a limit switch structure with automatic reset provided in the present invention;

[0047] Figure 6 It is an enlarged schematic diagram of the cooperation between the unlocking button, the elastic positioning column and the elastic limiting member in a limit switch structure with automatic reset provided by the present invention;

[0048] Figure 7 It is an exploded schematic diagram of an unlocking button, an elastic positioning column and an elastic limiting member in a limit switch structure with automatic reset provided in the present invention;

[0049] Figure 8 It is a schematic diagram of the positions of the unlocking button and the elastic positioning clamping column in a limit switch structure with automatic reset provided by the present invention when the rotating shell does not rotate;

[0050] Fig. 9 A schematic diagram of the positions of an unlocking button and an elastic positioning clamping column during the rotation of a rotating shell in a limit switch structure with automatic reset provided by the present invention;

[0051] Fig.10 It is a schematic diagram of the positions of the unlocking button and the elastic positioning clamping column after the rotating shell rotates to a preset angle in a limit switch structure with automatic reset provided by the present invention;

[0052] Illustrations: rotating shell 1; sliding column 101; fixed shell 2; positioning card hole 201; arc-shaped slide groove 202; unlocking button 3; button body 301; second inclined surface 3011; first spring 302; limiting baffle 303; third inclined surface 3031; guide slide groove 304; pressure plate 305; elastic positioning card column 4; pressure block 401; first inclined surface 4011; second spring 402; card column body 403; rotating shaft 5; limiting card column 6; fourth inclined surface 601; third spring 7. DETAILED DESCRIPTION

[0053] The embodiment of the invention discloses a limit switch structure with automatic resetting and a bracket, which are used to solve the technical problem of complicated operation of the existing limit switch.

[0054] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] Embodiment 1

[0056] See also Figures 1 to 10 , a limit switch structure with automatic reset provided in this embodiment includes:

[0057] A fixed housing 2 and a rotating housing 1, wherein the rotating housing 1 can be driven to rotate relative to the fixed housing 2;

[0058] The rotating housing 1 is provided with an unlocking button 3 and an elastic positioning post 4, and the fixed housing 2 is provided with a plurality of positioning holes 201 distributed along the rotation track of the elastic positioning post 4;

[0059] The elastic positioning post 4 extends out of the rotating housing 1 and is movably inserted into the positioning hole 201 to limit the rotation of the rotating housing 1 relative to the fixed housing 2, and the unlocking button 3 is used to drive the elastic positioning post 4 to move and disengage the elastic positioning post 4 from the positioning hole 201;

[0060] The fixed housing 2 is provided with elastic limiting members having the same number as the positioning holes 201;

[0061] After the unlock button 3 drives the elastic positioning post 4 to disengage from the positioning hole 201 , the elastic limiting member is used to limit the reset of the unlock button 3 .

[0062] In this embodiment, when the operator needs to operate the rotating shell 1 to rotate, he only needs to press the unlock button 3. After the unlock button 3 is pressed, it drives the elastic positioning column 4 to move and disengage the elastic positioning column 4 from the positioning hole 201, and the unlock button 3 cannot be reset due to the limiting effect of the elastic limiting member. At this time, the rotating shell 1 can rotate relative to the fixed shell 2. When the unlock button 3 follows the movement of the rotating shell 1, it will be separated from the elastic limiting member. Therefore, the unlock button 3 returns to the initial position (reset). After the rotating shell 1 rotates by a preset angle, the elastic positioning column 4 is automatically clamped into another positioning hole 201 by its own elastic force, thereby limiting the rotating shell 1 from continuing to rotate. If the operator needs to rotate the rotating shell 1, the above operation process can be repeated. Through the above design, the operator only needs to operate the unlock button 3 once to unlock the rotation of the rotating shell 1, and during the rotation of the rotating shell 1, it can automatically complete the locking limit. The operator does not need to operate the unlock button 3 twice, which greatly simplifies the operator's operation process and brings a better operation experience to the operator.

[0063] Furthermore, the unlocking button 3 includes a button body 301 and a first spring 302;

[0064] The rotating housing 1 is provided with a receiving cavity for receiving the first spring 302. The first spring 302 is placed in the receiving cavity, and the first end of the first spring 302 abuts against the cavity wall of the receiving cavity.

[0065] A pressing plate 305 is disposed on the bottom surface of the button body 301, and the pressing plate 305 abuts against the first spring 302;

[0066] When the unlock button 3 is in a pressed state, the pressing plate 305 compresses the first spring 302 .

[0067] It should be noted that the first spring 302 is used to help the button body 301 to reset. When the button body 301 is not pressed or blocked by the elastic limiter, the elastic force released by the first spring 302 drives the button body 301 to return to the unpressed state.

[0068] Furthermore, the elastic positioning clamp 4 includes a clamp body 403 and a second spring 402;

[0069] A pressure block 401 is connected to the non-insertion end of the clamping column body 403, and a first inclined surface 4011 is provided on the outer side wall of the pressure block 401 facing the button body 301. The first end of the second spring 402 is fixedly connected to the rotating shell 1, and the second end of the second spring 402 is fixedly connected to the pressure block 401.

[0070] The non-pressing end of the button body 301 is provided with a second inclined surface 3011 matching the first inclined surface 4011 .

[0071] When the unlock button 3 is in a pressed state, the second inclined surface 3011 slides along the first inclined surface 4011 to drive the column body 403 to separate from the positioning hole 201 .

[0072] Furthermore, the rotating shell 1 is provided with an escape hole for the clamping column body 403 to extend out.

[0073] It should be noted that, through the above design, when the operator presses the unlocking button 3, the button body 301 drives the clamping column body 403 to disengage from the positioning clamping hole 201, so that the rotating shell 1 can rotate relative to the fixed shell 2. In addition, the first end of the second spring 402 is specifically fixedly connected to other parts on the rotating shell 1, such as reinforcing ribs, partitions, etc., which are not shown in the drawings.

[0074] Furthermore, the elastic limiting member includes a limiting clamping column 6 and a third spring 7;

[0075] The fixed housing 2 is provided with a mounting hole, the limiting clamping column 6 is located in the mounting hole, the first end of the third spring 7 is fixedly connected to the mounting hole, and the second end of the third spring 7 is fixedly connected to the first end of the limiting clamping column 6;

[0076] The bottom surface of the button body 301 is provided with a limit baffle 303 that matches the limit clamping column 6;

[0077] When the unlock button 3 is not pressed, the bottom end of the limit baffle 303 presses against the limit column 6 and drives the limit column 6 to press against the third spring 7;

[0078] When the unlock button 3 is in a pressed state, the bottom end of the limit baffle 303 is separated from the limit column 6, and the limit column 6 contacts the outer wall of the limit baffle 303 under the elastic force of the third spring 7 to limit the reset of the unlock button 3.

[0079] Furthermore, the rotating shell 1 is provided with an avoidance hole for the limit clamping column 6 to extend out.

[0080] It should be noted that, through the above-mentioned design, when the unlocking button 3 is pressurized so that the elastic positioning column 4 disengages from the positioning hole 201, the limiting column 6 abuts against the outer wall of the limiting baffle 303, thereby limiting the reset of the unlocking button 3, thereby preventing the elastic positioning column 4 from being re-stuck in the positioning hole 201 due to the reset of the unlocking button 3 when the rotating shell 1 does not rotate.

[0081] Specifically, a third inclined surface 3031 is provided at the bottom end of the limit baffle 303;

[0082] The second end of the position-limiting clamping column 6 is provided with a fourth inclined surface 601 matched with the third inclined surface 3031;

[0083] It should be noted that when the unlock button 3 is not pressed, the third inclined surface 3031 presses against the fourth inclined surface 601, and the limiting column 6 compresses the third spring 7;

[0084] When the unlock button 3 is in a pressed state, the third inclined surface 3031 slides along the fourth inclined surface 601, thereby causing the limit baffle 303 and the limit clamping column 6 to be misaligned. Then, the limit clamping column 6 contacts the outer wall of the limit baffle 303 under the elastic force of the third spring 7 to limit the reset of the unlock button 3.

[0085] Furthermore, a guide slider is connected to the rotating shell 1;

[0086] The fixed housing 2 is provided with an arc-shaped slide groove 202 matching the guide slide block;

[0087] The guide slider is slidably connected in the arc-shaped slide groove 202;

[0088] When the rotating housing 1 rotates relative to the fixed housing 2 , the guide slider slides along the arc-shaped sliding groove 202 .

[0089] It should be noted that, through the above-mentioned design, the rotating housing 1 can be made to rotate more stably relative to the fixed housing 2, thereby preventing the rotating housing 1 from shaking or swinging during rotation.

[0090] Furthermore, a guide slot 304 is provided on the button body 301;

[0091] The rotating housing 1 is provided with a sliding column 101 which matches with the guide slot 304;

[0092] When the unlocking button 3 is driven to move, the guide slot 304 slides along the sliding column 101 .

[0093] It should be noted that, through the above-mentioned design, the moving direction of the key body 301 can be limited to prevent the key body 301 from deviating from the preset moving direction.

[0094] Further, in this embodiment, the number of the guide slots 304 is preferably two, and the number of the sliding posts 101 is preferably two;

[0095] Specifically, the two guide grooves 304 are arranged at intervals along the length direction of the button body 301 .

[0096] Furthermore, a rotating shaft 5 is connected to the fixed housing 2 , and the rotating housing 1 is rotatably connected to the rotating shaft 5 .

[0097] It should be noted that the rotating housing 1 can rotate relative to the fixed housing 2 via the rotating shaft 5 . Furthermore, in order to increase the damping feeling when the rotating housing 1 rotates, a plurality of friction pads can be provided on the rotating shaft 5 .

[0098] See also Figures 8 to 10 , the operation process of the limit switch structure with automatic reset in this embodiment:

[0099] In the original state, the elastic positioning clamp column 4 is inserted into the positioning clamp hole 201, and the rotating housing 1 cannot rotate relative to the fixed housing 2;

[0100] When the operator operates the rotating housing 1 to rotate relative to the fixed housing 2, the operator may follow the following operating steps:

[0101] Step 1: The operator presses the button body 301, the post body 403 disengages from the positioning hole 201, and the rotating shell 1 can rotate relative to the fixed shell 2. At this time, the limit post 6 is ejected by the third spring 7, and the limit post 6 clamps the button body 301, so that the button body 301 always drives the post body 403 to disengage from the positioning hole 201, so that the rotating shell 1 always remains in a rotatable state.

[0102] Step 2: The rotating shell 1 rotates relative to the fixed shell 2. At this time, the button body 301 is separated from the limiting clamping column 6, and the button body 301 is bounced open by the first spring 302. The button body 301 returns to the initial state and resets. The clamping column body 403 is offset from the positioning clamping hole 201 and cannot be reset, so the rotating shell 1 can continue to rotate relative to the fixed shell 2.

[0103] Step 3: After the rotating housing 1 rotates to a preset angle, the clamping column body 403 is inserted into another positioning clamping hole 201 under the elastic force of the second spring 402, and the rotating housing 1 is again limited and cannot rotate. If the rotating housing 1 needs to be rotated again, repeat the above steps.

[0104] Embodiment 2

[0105] See also Figures 1 to 10 , a bracket provided in this embodiment can be used to install electronic equipment such as a display, and mainly includes a bracket body and a limit switch structure with automatic reset as described in the first embodiment;

[0106] The fixed housing 2 with the limit switch structure having automatic reset is fixedly connected to the bracket body.

[0107] It should be noted that the operator only needs to operate the unlock button 3 once to unlock the rotation of the rotating shell 1, and during the rotation of the rotating shell 1, it can automatically complete the locking limit by itself, and the operator does not need to operate the unlock button 3 a second time, which greatly simplifies the operator's operation process and brings a better operation experience to the operator.

[0108] The above is a detailed introduction to a limit switch structure and a bracket with automatic reset provided by the present invention. For a person skilled in the art, according to the idea of ​​the embodiments of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A limit switch structure with automatic reset, which is applied to a bracket for mounting a display, characterized in that: It comprises a fixed shell (2) and a rotating shell (1), wherein the rotating shell (1) can be driven to rotate relative to the fixed shell (2); The rotating shell (1) is provided with an unlocking button (3) and an elastic positioning post (4), and the fixed shell (2) is provided with a plurality of positioning holes (201) distributed along the rotation track of the elastic positioning post (4); The elastic positioning post (4) extends out of the rotating shell (1) and is movably inserted into the positioning hole (201) to limit the rotation of the rotating shell (1) relative to the fixed shell (2); the unlocking button (3) is used to drive the elastic positioning post (4) to move and to make the elastic positioning post (4) disengage from the positioning hole (201); The fixed housing (2) is provided with elastic limiting members having the same number as the positioning holes (201); After the unlocking button (3) drives the elastic positioning clamping column (4) to disengage from the positioning clamping hole (201), the elastic limiting member is used to limit the reset of the unlocking button (3); The unlocking button (3) comprises a button body (301) and a first spring (302); The elastic positioning clamping column (4) comprises a clamping column body (403) and a second spring (402); A pressure block (401) is connected to the non-insertion end of the clamping column body (403); a first inclined surface (4011) is provided on the outer wall of the pressure block (401) facing the button body (301); a first end of the second spring (402) is fixedly connected to the rotating shell (1); and a second end of the second spring (402) is fixedly connected to the pressure block (401); A second inclined surface (3011) matching with the first inclined surface (4011) is provided on the non-pressing end of the button body (301); The rotating shell (1) is provided with a receiving cavity for receiving the first spring (302); the first spring (302) is placed in the receiving cavity, and the first end of the first spring (302) abuts against a cavity wall of the receiving cavity; A pressing plate (305) is provided on the bottom surface of the button body (301), and the pressing plate (305) is in contact with the first spring (302); The elastic limiting member comprises a limiting clamping column (6) and a third spring (7); The fixed housing (2) is provided with a mounting hole, the limiting clamping column (6) is located in the mounting hole, the first end of the third spring (7) is fixedly connected to the mounting hole, and the second end of the third spring (7) is fixedly connected to the first end of the limiting clamping column (6); The bottom surface of the button body (301) is provided with a limit baffle (303) that matches the limit clamping column (6); A third inclined surface (3031) is provided at the bottom end of the limit baffle (303); The second end of the position-limiting clamping column (6) is provided with a fourth inclined surface (601) that matches the third inclined surface (3031); The rotating housing (1) is connected to a guide slider; The fixed housing (2) is provided with an arc-shaped sliding groove (202) matching the guide sliding block; The button body (301) is provided with a guide slot (304); The rotating shell (1) is provided with a sliding column (101) which matches the guiding sliding groove (304).

2. The limit switch structure with automatic reset according to claim 1, characterized in that: When the unlock button (3) is in a pressed-down state, the pressing plate (305) compresses the first spring (302).

3. The limit switch structure with automatic reset according to claim 1, characterized in that: When the unlocking button (3) is in a pressed-down state, the second inclined surface (3011) slides along the first inclined surface (4011) to drive the clamping column body (403) to disengage from the positioning clamping hole (201).

4. The limit switch structure with automatic reset according to claim 1, characterized in that: When the unlocking button (3) is not pressed, the bottom end of the limit baffle (303) presses against the limit clamping column (6) and drives the limit clamping column (6) to press against the third spring (7); When the unlock button (3) is in a pressed-down state, the bottom end of the limit baffle (303) is separated from the limit clamping column (6), and the limit clamping column (6) contacts the outer side wall of the limit baffle (303) under the elastic force of the third spring (7) to limit the reset of the unlock button (3).

5. The limit switch structure with automatic reset according to claim 1, characterized in that: When the unlock button (3) is not pressed, the third inclined surface (3031) presses against the fourth inclined surface (601), and the limiting clamping column (6) compresses the third spring (7); When the unlock button (3) is in a pressed-down state, the third inclined surface (3031) slides along the fourth inclined surface (601), and the limiting clamping column (6) contacts the outer side wall of the limiting baffle (303) under the elastic force of the third spring (7) to limit the reset of the unlock button (3).

6. The limit switch structure with automatic reset according to claim 1, characterized in that: The guide sliding block is slidably connected in the arc-shaped sliding groove (202); When the rotating shell (1) rotates relative to the fixed shell (2), the guide sliding block slides along the arc-shaped sliding groove (202).

7. The limit switch structure with automatic reset according to claim 1, characterized in that: When the unlocking button (3) is driven to move, the guide slide groove (304) slides along the slide column (101).

8. The limit switch structure with automatic reset according to claim 7, characterized in that: The number of the guide sliding grooves (304) is two, and the number of the sliding columns (101) is two; The two guide slots (304) are arranged at intervals along the length direction of the button body (301).

9. The limit switch structure with automatic reset according to claim 1, characterized in that: The fixed housing (2) is connected to a rotating shaft (5), and the rotating housing (1) is rotatably connected to the rotating shaft (5).

10. A bracket, characterized in that: It comprises a bracket body and a limit switch structure with automatic reset as claimed in any one of claims 1 to 9; The fixed housing (2) with the automatic reset limit switch structure is fixedly connected to the bracket body.

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