Sliding plate locking mechanism, drawer seat and circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and discloses a sliding plate locking mechanism, a drawer seat and a circuit breaker. The sliding plate locking mechanism is used for locking a sliding plate on a sliding rail and comprises a limiting piece, a locking piece and a driving unit. Wherein the limiting piece is arranged on the sliding rail; the locking piece is connected to the sliding plate in a sliding mode, and the locking piece is provided with a locking position abutting against the limiting piece and an unlocking position separated from the limiting piece; the driving unit is arranged on the sliding plate and used for enabling the locking piece to be switched between the locking position and the unlocking position. According to the sliding plate locking mechanism, locking and unlocking between the sliding plate and the sliding rail can be achieved, the circuit breaker body can be reliably locked in the drawer base in the locking state, the circuit breaker body can slide out of the drawer base in the unlocking state, and the use safety of the circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a slide plate locking mechanism, a drawer seat and a circuit breaker. Background Art

[0002] The circuit breaker has a drawer-type circuit breaker, which generally includes a drawer seat and a circuit breaker body installed in the drawer seat. The drawer seat is provided with a slide rail and a slide plate that slides with the slide rail. The slide plate is used to be connected to the circuit breaker body. The circuit breaker body can be moved in and out of the drawer seat by sliding the slide plate.

[0003] However, the conventional drawer seat does not have a structure for locking the sliding between the slide rail and the slide plate, which makes it easy for the circuit breaker body to slide out of the drawer seat by itself due to accidental touch, and even causes the slide plate to detach from the slide rail and cause the circuit breaker body to fall, resulting in poor safety in use.

[0004] Therefore, it is urgent to propose a slide locking mechanism, a drawer seat and a circuit breaker to solve the above technical problems. Utility Model Content

[0005] According to one aspect of the utility model, the utility model provides a slide locking mechanism, which can realize locking and unlocking between the slide and the slide rail, and enables the circuit breaker body to be reliably locked in the drawer seat in the locked state, and the circuit breaker body to slide out of the drawer seat in the unlocked state, thereby improving the safety of the circuit breaker.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The slide plate locking mechanism is used to lock the slide plate on the slide rail, and the slide plate locking mechanism includes:

[0008] A limiting member, arranged on the slide rail;

[0009] A locking member, slidably connected to the slide plate, wherein the locking member has a locking position abutting against the limiting member and an unlocking position separated from the limiting member;

[0010] A driving unit is arranged on the slide plate, and the driving unit is used to switch the locking member between the locking position and the unlocking position.

[0011] Optionally, along the sliding direction of the slide plate, a first arm and a second arm are respectively provided on opposite sides of the locking member, and the driving unit includes:

[0012] A driving member is rotatably connected to the slide plate, and two sides of the rotation center of the driving member are respectively a force-applying section and an unlocking section. When the force-applying section is driven to rotate by an external force, the unlocking section can abut against the bottom of the first arm and push the first arm to drive the locking member to move to the unlocking position;

[0013] An elastic member has one end fixed to the slide plate and the other end connected to the second arm. The elastic member is configured to always have a tendency to move the locking member from the unlocking position to the locking position.

[0014] Optionally, an inclined surface is provided at one end of the locking member close to the limiting member, the inclined surface and an abutting surface where the locking member abuts against the limiting member are arranged adjacent to each other, and an angle between the abutting surface and the inclined surface is an acute angle.

[0015] Optionally, the driving unit comprises a driving member rotatably connected to the skateboard, two sides of the rotation center of the driving member are respectively a force-applying section and an unlocking section, the force-applying section is provided with a locking section, and one side of the locking member is provided with a first arm matched with the locking section and the unlocking section;

[0016] The external force drives the force-applying section to rotate in the first direction, so that the unlocking section can abut against the bottom of the first arm, and push the first arm to drive the locking member to move to the unlocking position; the external force drives the force-applying section to rotate in the second direction, so that the locking section can abut against the top of the first arm, and push the first arm to drive the locking member to move to the locking position;

[0017] The first direction is opposite to the second direction.

[0018] Optionally, a limiting groove is provided on a side of the force-applying section close to the slide plate, and when the locking member is located at the locking position, the end of the slide plate is clamped in the limiting groove.

[0019] Optionally, a sliding block is provided on the slide plate, and a long strip hole is provided on the locking member, and the locking member is slidably sleeved on the sliding block through the long strip hole.

[0020] Optionally, the limiting member is detachably connected to the slide rail.

[0021] Optionally, the force applying section and the unlocking section form an L shape.

[0022] According to another aspect of the utility model, the utility model also provides a drawer seat for a circuit breaker, comprising a sliding plate and a slide rail connected in a sliding manner, and a slide locking mechanism as described in any of the above technical solutions, wherein the slide locking mechanism is applied to the slide and the slide rail.

[0023] According to another aspect of the utility model, the utility model further provides a circuit breaker, comprising a circuit breaker body and the above-mentioned drawer seat, wherein the circuit breaker body is mounted on the slide plate.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a slide locking mechanism, which is used to lock the slide on the slide rail, and includes a limiter, a locking member and a drive unit. The drive unit is used to switch the locking member between a locked position abutting against the limiter and an unlocked position separated from the limiter. The slide locking mechanism has a simple structure and is easy to control. When the slide locking mechanism is used on a drawer-type circuit breaker, when the circuit breaker body needs to be pulled out, the drive unit places the locking member in the unlocked position, which does not affect the normal entry and exit of the circuit breaker body in the drawer seat; when the circuit breaker body does not need to be pulled out, the drive unit places the locking member in the locked position, which can prevent the circuit breaker body from sliding out of the drawer seat and falling due to accidental touch, thereby improving the safety of the circuit breaker.

[0026] The utility model also provides a drawer seat, comprising a sliding plate and a slide rail connected in a sliding manner, and the above-mentioned sliding plate locking mechanism. Due to the above-mentioned sliding plate locking mechanism, the drawer seat can lock the sliding plate on the slide rail, has a self-locking function, is flexible and diverse in use, and is conducive to meeting the various use needs of users.

[0027] The utility model also provides a circuit breaker, comprising a circuit breaker body and the above-mentioned drawer seat. The circuit breaker has high safety in use due to the use of the above-mentioned drawer seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of a locking member in a sliding plate locking mechanism provided by Embodiment 1 of the utility model, in a locked position;

[0030] Figure 2 A schematic diagram of the structure of a sliding plate locking mechanism provided by the first embodiment of the present utility model, in which a locking member is in an unlocked position;

[0031] Figure 3 A schematic diagram of a slide plate sliding out of a slide rail in a slide plate locking mechanism provided in Embodiment 1 of the utility model;

[0032] Figure 4A schematic diagram of the structure of a sliding plate locking mechanism provided in Embodiment 2 of the present utility model, in which a locking member is located in a locking position;

[0033] Figure 5 A schematic diagram of the structure of a sliding plate locking mechanism provided in Embodiment 2 of the present utility model, in which a locking member is in an unlocked position;

[0034] Figure 6 A schematic diagram of the structure of a drawer seat provided in Embodiment 3 of the present utility model;

[0035] Figure 7 This is a structural schematic diagram of a circuit breaker provided in Embodiment 4 of the present utility model.

[0036] In the figure:

[0037] 10. Slide plate; 20. Slide rail; 30. Drawer seat; 40. Circuit breaker body;

[0038] 100. Limiting parts;

[0039] 200, locking member; 210, first arm; 220, second arm; 230, inclined surface; 240, long strip hole;

[0040] 300, driving unit; 310, driving member; 311, force application section; 3111, locking section; 312, unlocking section; 320, elastic member;

[0041] 400, slider;

[0042] 500. Fixing pin. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] Embodiment 1

[0048] This embodiment provides a slide locking mechanism, which can realize locking and unlocking between the slide and the slide rail, and enables the circuit breaker body to be reliably locked in the drawer seat in the locked state, and the circuit breaker body to slide out of the drawer seat in the unlocked state, thereby improving the safety of the circuit breaker.

[0049] Specifically, Figure 1-Figure 3 As shown, the sliding plate locking mechanism comprises a limit member 100, a locking member 200 and a driving unit 300. The limit member 100 is arranged on the slide rail 20. The locking member 200 is slidably connected to the sliding plate 10, and the locking member 200 has a locking position abutting against the limit member 100 and an unlocking position separated from the limit member 100. The driving unit 300 is arranged on the sliding plate 10, and the driving unit 300 is used to switch the locking member 200 between the locking position and the unlocking position.

[0050] When the slide plate 10 is required to slide relative to the slide rail 20, the locking member 200 can be placed in the unlocking position through the driving unit 300; when the slide plate 10 is not required to slide relative to the slide rail 20, the locking member 200 can be placed in the locking position through the driving unit 300. The slide plate locking mechanism has a simple structure and is easy to control, and can meet various usage requirements of users.

[0051] When the slide locking mechanism is used on a drawer-type circuit breaker, when the circuit breaker body needs to be pulled out, the driving unit 300 places the locking member 200 in the unlocking position, which does not affect the normal entry and exit of the circuit breaker body in the drawer seat; when the circuit breaker body does not need to be pulled out, the driving unit 300 places the locking member 200 in the locking position, which can prevent the circuit breaker body from sliding out of the drawer seat and falling due to accidental touch, thereby improving the safety of the circuit breaker.

[0052] Further, see Figure 1 , along the sliding direction of the slide plate 10, a first arm 210 and a second arm 220 are respectively provided on opposite sides of the locking member 200. The driving unit 300 includes a driving member 310 and an elastic member 320. The driving member 310 is rotatably connected to the slide plate 10, and the two sides of the rotation center of the driving member 310 are respectively a force-applying section 311 and an unlocking section 312. The external force drives the force-applying section 311 to rotate, so that the unlocking section 312 can abut against the bottom of the first arm 210, and push the first arm 210 to drive the locking member 200 to move to the unlocking position. One end of the elastic member 320 is fixed to the slide plate 10, and the other end is connected to the second arm 220. The elastic member 320 is configured to always have a tendency to move the locking member 200 from the unlocking position to the locking position.

[0053] Optionally, continue to see Figure 1 In a possible embodiment, a fixing pin 500 is provided on the skateboard 10 below the second arm 220, one end of the elastic member 320 is connected to the fixing pin 500, and the other end is connected to the second arm 220. When the locking member 200 is in the unlocking position, the elastic member 320 is stretched.

[0054] Optionally, continue to see Figure 2 In another possible embodiment, a fixing pin 500 is provided on the skateboard 10 above the second arm 220, one end of the elastic member 320 is connected to the fixing pin 500, and the other end is connected to the second arm 220. When the locking member 200 is in the unlocking position, the elastic member 320 is compressed.

[0055] Further, taking the fixing pin 500 being disposed above the second arm 220 as an example, the working process of the slide plate locking mechanism provided in this embodiment is as follows:

[0056] like Figure 1 As shown, at this time, the slide 10 and the slide rail 20 are in a locked state, and the locking member 200 abuts against the limiting member 100, limiting the slide 10 from moving to the left (the circuit breaker body is installed on the slide 10, and the circuit breaker body is locked in the drawer seat at this time). Figure 2As shown, when the slide plate 10 needs to be pulled out, the force-applying section 311 of the driving member 310 is manually moved to rotate the driving member 310, so that the unlocking section 312 abuts against the first arm 210 and pushes the first arm 210 to move. The movement of the first arm 210 causes the locking member 200 to slide to the unlocking position on the slide plate 10. After the locking member 200 moves to the unlocking position, the slide plate 10 can slide to the left relative to the slide rail 20 (at this time, the circuit breaker body can slide out of the drawer seat). When the slide plate 10 needs to be locked on the slide rail 20 again, an external force can be continuously applied to the force-applying section 311 by hand to keep the locking member 200 in the unlocking position, and then the slide plate 10 is pushed to the right to the initial position, and the force-applying section 311 is released. At this time, the elastic member 320 will pull the locking member 200 to the locking position through the elastic restoring force, so that the locking member 200 abuts against the limiting member 100 again, and the locking of the slide plate 10 and the slide rail 20 is completed.

[0057] The slide plate locking mechanism can unlock the slide plate 10 and the slide rail 20 by driving the force application section 311 to rotate by external force, and can automatically lock the slide plate 10 and the slide rail 20 by the elastic member 320, and has a simple structure and is easy to control.

[0058] Optionally, continue to see Figure 1-Figure 3 In this embodiment, the force-applying section 311 and the unlocking section 312 form an L-shape. This arrangement can improve the compactness of the driving member 310 and save effort.

[0059] Optionally, continue to see Figure 1-Figure 3 The end of the locking member 200 close to the limiting member 100 is provided with an inclined surface 230, and the inclined surface 230 and the abutting surface of the locking member 200 and the limiting member 100 are arranged adjacent to each other, and the angle between the abutting surface and the inclined surface 230 is an acute angle. Since the elastic member 320 will always pull the locking member 200 back to the locked position through the elastic restoring force, therefore, see Figure 3When the slide plate 10 slides to the left relative to the slide rail 20, if the external force applied to the force-applying section 311 is removed, the locking member 200 will automatically return to the locked position. At this time, if the slide plate 10 is pushed to reset (slide to the right), the locking member 200 will abut against the other side of the limiter 100, preventing the slide plate 10 from continuing to move. In this embodiment, the inclined surface 230 is provided on the locking member 200, so that during the reset of the slide plate 10, the inclined surface 230 can slide on the limiter 100. During the sliding process, the locking member 200 is pushed by the limiter 100 to move in the unlocking direction, so that the locking member 200 moves from the other side of the limiter 100 to one side, and finally abuts against one side of the limiter 100, and automatically changes to the locked state. That is, by providing the inclined surface 230, it is not necessary to apply external force to the force-applying section 311 during the reset of the slide plate 10, thereby reducing the labor intensity of the staff. Furthermore, the elastic member 320 can always ensure that the locking member 200 is reliably located at the locking position, thereby improving the reliability of the operation of the sliding plate locking mechanism.

[0060] It is understandable that the elastic member 320 may be, but is not limited to, a spring.

[0061] Optionally, the surface where the unlocking section 312 contacts the first arm 210 is an arc surface. Such a setting can reduce the friction between the unlocking section 312 and the first arm 210, improve the smoothness of the rotation of the driving member 310, and thereby improve the reliability of the unlocking section 312 in pushing the locking member 200 to move.

[0062] Optionally, continue to see Figure 1-Figure 3 The slide plate 10 is provided with a slider 400, and the locking member 200 is provided with an elongated hole 240, and the locking member 200 is slidably sleeved on the slider 400 through the elongated hole 240. The sliding connection between the locking member 200 and the slide plate 10 is realized by the cooperation between the elongated hole 240 and the slider 400, which has a simple structure and smooth sliding.

[0063] Optionally, continue to see Figure 1-Figure 3 The stopper 100 is detachably connected to the slide rail 20. By setting the stopper 100 to be detachably connected to the slide rail 20, when the stopper 100 is damaged, it only needs to be removed. Compared with the stopper 100 and the slide rail 20 being an integrated structure, maintenance is more convenient and the maintenance cost is relatively low.

[0064] Optionally, in this embodiment, the stopper 100 is detachably connected to the slide rail 20 by bolt connection. In other embodiments, the stopper 100 can also be detachably connected to the slide rail 20 by other means, such as snap connection, etc., which can be set according to actual needs, and this application does not make specific limitations.

[0065] Embodiment 2

[0066] This embodiment provides a sliding plate locking mechanism, which is substantially the same in structure as the first embodiment, and is only improved on the basis of the first embodiment. Therefore, only the differences between the two are described here, and the same structures of this embodiment and the first embodiment are not repeated here.

[0067] Specifically, Figure 4 and Figure 5 As shown, in this embodiment, the driving unit 300 includes a driving member 310 rotatably connected to the skateboard 10, and the two sides of the rotation center of the driving member 310 are respectively a force-applying section 311 and an unlocking section 312, and the force-applying section 311 is provided with a locking section 3111, and one side of the locking member 200 is provided with a first arm 210 that cooperates with the locking section 3111 and the unlocking section 312.

[0068] When the external force drives the force-applying section 311 to rotate in the first direction, the unlocking section 312 can abut against the bottom of the first arm 210, and push the first arm 210 to drive the locking member 200 to move to the unlocking position. When the external force drives the force-applying section 311 to rotate in the second direction, the locking section 3111 can abut against the top of the first arm 210, and push the first arm 210 to drive the locking member 200 to move to the locking position. The first direction is opposite to the second direction. In this embodiment, the first direction is counterclockwise, and the second direction is clockwise.

[0069] The working process of the sliding plate locking mechanism provided in this embodiment is as follows:

[0070] like Figure 4 As shown, at this time, the slide 10 and the slide rail 20 are in a locked state, and the locking member 200 abuts against the limiting member 100, limiting the slide 10 from moving to the left (the circuit breaker body is installed on the slide 10, and the circuit breaker body is locked in the drawer seat at this time). Figure 5As shown, when the slide plate 10 needs to be pulled out, the force-applying section 311 is driven by hand to rotate along the first direction, which will cause the unlocking section 312 to abut against the bottom of the first arm 210 and push the first arm 210 to move. The movement of the first arm 210 will cause the locking member 200 to slide on the slide plate 10 to the unlocking position. After the locking member 200 moves to the unlocking position, the slide plate 10 can slide to the left relative to the slide rail 20 (at this time, the circuit breaker body can slide out of the drawer seat). When the slide plate 10 needs to be locked on the slide rail 20 again, an external force can be continuously applied to the force applying section 311 by hand to keep the locking member 200 in the unlocked position. Then, after pushing the slide plate 10 to the right to the initial position, the force applying section 311 is driven by hand to rotate along the second direction, which will make the locking section 3111 abut against the top of the first arm 210 and push the first arm 210 to move. The movement of the first arm 210 will cause the locking member 200 to slide on the slide plate 10 toward the locked position. After the locking member 200 moves to the locked position, the locking member 200 abuts against the limit member 100 again to complete the locking of the slide plate 10 and the slide rail 20. After that, the force applying section 311 can be released.

[0071] The slide plate locking mechanism can realize unlocking and locking of the slide plate 10 and the slide rail 20 by driving the force application section 311 to rotate by external force, and has a simple structure and convenient control.

[0072] Optionally, the surface where the locking segment 3111 contacts the first arm 210 is an arc surface. Such a setting can reduce the friction between the locking segment 3111 and the first arm 210, improve the smoothness of the rotation of the driving member 310, and thereby improve the reliability of the locking segment 3111 in pushing the locking member 200 to move.

[0073] Furthermore, in a possible embodiment, a limiting groove (not shown) is provided on one side of the force-applying section 311 close to the slide 10, and when the locking member 200 is in the locked position, the end of the slide 10 is engaged with the limiting groove. By providing the limiting groove to engage with the slide 10, a certain force is required to move the locking member 200 from the locked position to the unlocked position, thereby improving the reliability of the locking of the slide 10 and the slide rail 20. Of course, in other possible embodiments, the reliability of the locking member 200 in the locked position can also be improved by increasing the friction between the driving member 310 and the slide 10, which can be set according to actual needs, and this application does not make specific limitations.

[0074] It is worth noting that the friction between the slider 400 and the inner wall of the elongated hole 240 can also be increased so that the locking member 200 cannot slide relative to the skateboard 10 when there is no external force driving the locking member 200. With this arrangement, during the sliding of the skateboard 10 relative to the slide rail 20, the external force applied to the driving member 310 can be removed, and it can also be ensured that the locking member 200 is always in the unlocked position.

[0075] It is worth noting that, in this embodiment, the inclined surface 230 may not be provided on the locking member 200 .

[0076] Embodiment 3

[0077] like Figure 1-Figure 6 As shown, this embodiment provides a drawer seat 30, including a sliding plate 10 and a slide rail 20 that are slidably connected, and a sliding plate locking mechanism provided in the first and second embodiments, and the sliding plate locking mechanism is applied to the sliding plate 10 and the slide rail 20.

[0078] The drawer seat 30 adopts the above-mentioned slide plate locking mechanism, so that the slide plate 10 can be locked on the slide rail 20, has a self-locking function, is flexible and diverse in use, and is conducive to meeting the various usage needs of users.

[0079] Embodiment 4

[0080] like Figure 7 As shown, this embodiment also provides a circuit breaker, including a circuit breaker body 40 and the drawer seat 30 provided in the third embodiment, and the circuit breaker body 40 is installed on the slide plate 10. Since the circuit breaker adopts the above-mentioned drawer seat 30, the circuit breaker has higher safety in use.

[0081] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A slide locking mechanism, used to lock a slide (10) on a slide rail (20), characterized in that: The slide plate locking mechanism comprises: A limiting member (100) is arranged on the slide rail (20); A locking member (200) is slidably connected to the slide plate (10), wherein the locking member (200) has a locking position abutting against the limiting member (100) and an unlocking position separated from the limiting member (100); A drive unit (300) is arranged on the slide plate (10), and the drive unit (300) is used to switch the locking member (200) between the locking position and the unlocking position.

2. The sliding plate locking mechanism according to claim 1, characterized in that: Along the sliding direction of the slide plate (10), a first support arm (210) and a second support arm (220) are respectively provided on opposite sides of the locking member (200), and the driving unit (300) comprises: A driving member (310) is rotatably connected to the slide plate (10); two sides of the rotation center of the driving member (310) are respectively a force-applying section (311) and an unlocking section (312); an external force drives the force-applying section (311) to rotate, so that the unlocking section (312) abuts against the bottom of the first arm (210), and pushes the first arm (210) to drive the locking member (200) to move to the unlocking position; An elastic member (320) has one end fixed to the slide plate (10) and the other end connected to the second support arm (220), and the elastic member (320) is configured to always have a tendency to move the locking member (200) from the unlocking position to the locking position.

3. The sliding plate locking mechanism according to claim 2, characterized in that: An inclined surface (230) is provided at one end of the locking member (200) close to the limiting member (100); the inclined surface (230) and a contact surface where the locking member (200) and the limiting member (100) abut are arranged adjacent to each other; and the angle between the contact surface and the inclined surface (230) is an acute angle.

4. The sliding plate locking mechanism according to claim 1, characterized in that: The driving unit (300) comprises a driving member (310) rotatably connected to the skateboard (10); two sides of the rotation center of the driving member (310) are respectively a force-applying section (311) and an unlocking section (312); a locking section (3111) is provided on the force-applying section (3111); and one side of the locking member (200) is provided with a first arm (210) matched with the locking section (3111) and the unlocking section (312); An external force drives the force-applying section (311) to rotate in a first direction, so that the unlocking section (312) abuts against the bottom of the first arm (210), and pushes the first arm (210) to drive the locking member (200) to move to the unlocking position; an external force drives the force-applying section (311) to rotate in a second direction, so that the locking section (3111) abuts against the top of the first arm (210), and pushes the first arm (210) to drive the locking member (200) to move to the locking position; The first direction is opposite to the second direction.

5. The sliding plate locking mechanism according to claim 4, characterized in that: A limiting groove is provided on one side of the force-applying section (311) close to the slide plate (10); when the locking member (200) is located at the locking position, the end of the slide plate (10) is clamped in the limiting groove.

6. The skateboard locking mechanism according to any one of claims 1 to 5, characterized in that: The slide plate (10) is provided with a slider (400), the locking member (200) is provided with an elongated hole (240), and the locking member (200) is slidably sleeved on the slider (400) through the elongated hole (240).

7. The skateboard locking mechanism according to any one of claims 1 to 5, characterized in that: The limiting member (100) is detachably connected to the slide rail (20).

8. The sliding plate locking mechanism according to claim 2 or 4, characterized in that: The force applying section (311) and the unlocking section (312) form an L shape.

9. Drawer seat, for circuit breaker, characterized in that, The invention comprises a sliding plate (10) and a sliding rail (20) which are slidably connected, and a sliding plate locking mechanism according to any one of claims 1 to 8, wherein the sliding plate locking mechanism is applied to the sliding plate (10) and the sliding rail (20).

10. A circuit breaker, characterized in that It comprises a circuit breaker body (40) and the drawer seat (30) according to claim 9, wherein the circuit breaker body (40) is mounted on the slide plate (10).

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