A skateboard locking device

Abstract

This utility model provides a sliding plate locking device, relating to a drawer-type low-voltage circuit breaker, including a locking plate, a sliding plate, a rotating shaft, a lower guide rail, an upper guide rail, and an elastic element. The sliding plate is mounted and movable between the lower and upper guide rails. A handle is provided on the sliding plate. An unlocking button is provided on the locking plate. The locking plate is rotatably mounted on the sliding plate. The elastic element causes the unlocking button on the locking plate to tend towards the handle on the sliding plate. When the sliding plate is pushed inward, the lower guide rail unlocks the locking plate, allowing the sliding plate to be pushed inward. When the sliding plate is pulled outward, the locking plate locks the sliding plate to the lower guide rail. When the sliding plate is pulled outward, pushing the unlocking button inward releases the locking plate from the sliding plate, allowing the sliding plate to be pulled outward. By installing a rotatable locking plate on the sliding plate, which cooperates with the locking feature added to the lower guide rail, the locking and unlocking of the sliding plate is achieved simply and reliably. The structure is simple, the operation is reliable, and the installation is convenient.

Description

Technical Field

[0001] This utility model relates to a drawer-type low-voltage circuit breaker, and in particular to a sliding plate locking device for the circuit breaker. Background Technology

[0002] In low-voltage power distribution equipment, withdrawable circuit breakers are often used to enable rapid connection and deployment of components such as circuit breakers to power lines, or to quickly disconnect and isolate them during maintenance. These circuit breakers mainly consist of two parts: the circuit breaker body and the drawer base. The circuit breaker body can be pulled out from the drawer base, making inspection and maintenance convenient and thus widely used. The circuit breaker body is the moving part, while the drawer base is the stationary part. Under the action of driving force, the circuit breaker body moves and positions itself in different working positions within the drawer base. The drawer base, as the stationary part, is usually fixed in the distribution cabinet, achieving both mechanical and electrical connection with the cabinet.

[0003] For rapid deployment of the circuit breaker, first pull out the sliding plates on both sides of the drawer base, place the circuit breaker body between the two sliding plates, and then push it to the isolation position. At this point, the corresponding structures on the circuit breaker body will align with the corresponding structures on the drawer base. The drawer base can be operated using the crank handle, which moves the two sliding plates through the mechanical transmission structure of the drawer base until it reaches the connection position, thereby driving the circuit breaker body to electrically connect to the power distribution line. If it is necessary to replace the circuit breaker body, after power is off, operate the drawer base using the crank handle to crank the circuit breaker body out of the drawer base and finally to the isolation position. At this point, the circuit breaker body needs to be pulled out a little further to remove it.

[0004] Because circuit breaker bodies are generally quite heavy, for safety reasons, after the circuit breaker body is placed on the sliding plate and pushed into the drawer seat, a locking device is required. This ensures that the circuit breaker body is locked in the isolated position of the drawer seat, preventing accidental sliding of the circuit breaker body from the drawer seat and causing a safety accident. Only when the circuit breaker body is in the isolated position of the drawer seat and is unlocked can it be safely pulled out of the drawer seat for replacement, repair, or maintenance. Existing sliding locking devices for drawer-type low-voltage circuit breakers have many parts, a complex structure, and are not sufficiently safe and reliable in operation. Utility Model Content

[0005] The purpose of this utility model is to provide a withdrawable circuit breaker slide locking structure with fewer parts, simple structure, and safe and reliable operation, which facilitates personnel to push the circuit breaker body to the isolation position and pull the circuit breaker body further out from the isolation position to the removal position.

[0006] To achieve the above objectives, this utility model provides a skateboard locking device, including a locking plate, a skateboard, a pivot, a lower guide rail, an upper guide rail, and an elastic element. The skateboard is mounted and movable between the lower and upper guide rails. A handle is provided on the skateboard. An unlocking button is provided on the locking plate. The locking plate is rotatably mounted on the skateboard. The elastic element causes the unlocking button on the locking plate to tend towards the handle on the skateboard. When the skateboard is pushed inward, the lower guide rail unlocks the locking plate, allowing the skateboard to be pushed inward. When the skateboard is pulled outward, the locking plate locks the skateboard to the lower guide rail. When the skateboard is pulled outward, pushing the unlocking button inward releases the locking plate from the skateboard, allowing the skateboard to be pulled outward.

[0007] Furthermore, the locking plate is provided with a rotating hole, through which it can be rotatably mounted on the slide plate. An unlocking button is located near the outer edge of the upper end of the locking plate, and a limiting edge is provided below the unlocking button. A locking edge and an unlocking edge are sequentially provided from the outside inwards at the lower end of the locking plate, with a smooth transition between the locking edge and the unlocking edge. A spring hook is also provided on the locking plate.

[0008] Furthermore, the lower guide rail has a recessed lower slide groove facing the slide plate, allowing the slide plate to move within the groove. On the side of the lower guide rail facing the slide plate near the locking plate, from the outside in, are sequentially arranged a first unlocking surface, a first transition surface, a locking surface, a locking plate recess, a second unlocking surface, and a sliding surface, with natural transitions between adjacent surfaces. The locking surface is recessed inwards, and the second unlocking surface is recessed inwards.

[0009] Furthermore, the upper edge of the slide plate is provided with an upper sliding edge, and the lower edge of the slide plate is provided with a lower sliding edge. A handle is provided on the outward-facing side of the slide plate, and a stop rib is provided on the upper edge of the handle. The slide plate also has spring-loaded holes.

[0010] Furthermore, when the slide plate is pulled outwards, the locking edge on the locking plate abuts against the locking surface of the lower guide rail, locking the slide plate to the lower guide rail, preventing it from being pulled outwards. When the slide plate is pulled outwards, if the unlocking button is pushed inwards, the locking plate rotates on the slide plate, the locking edge disengages from the locking surface, and the slide plate can be pulled outwards. When the slide plate is pushed inwards, the first and second unlocking surfaces of the lower guide rail can push the locking plate to rotate on the slide plate via the unlocking edge and transition edge on the locking plate, thereby unlocking the locking plate and allowing the slide plate to be pushed inwards.

[0011] Furthermore, the sliding surface is provided with a locking plate protrusion that protrudes from the guide rail upward from the sliding surface. When the slide plate is pushed inward, the locking plate protrusion can abut against the unlocking edge to overcome the elastic force of the elastic element and push the locking plate to rotate on the slide plate.

[0012] The locking plate protruding against the unlocking edge allows the locking plate and the sliding plate to remain relatively stationary.

[0013] Furthermore, the lower guide rail is provided with a recessed lower slide groove facing the slide plate, and the slide plate can be placed in the lower slide groove and moved.

[0014] The lower guide rail, facing the slide plate and close to the locking plate, is provided with a first unlocking surface, a first transition surface, a locking surface and a concave surface in sequence from the outside to the inside, with natural transitions between adjacent surfaces;

[0015] The locking surface is concave and faces inward, and the concave surface extends inward to the limit position where the transition edge can move inward; when the unlocking button is pressed against the handle, the height of the bottom of the lock plate is not lower than the height of the concave surface.

[0016] The technical advantage of this invention lies in the simple and reliable locking and unlocking of the slide plate by installing a rotatable locking plate on the slide plate. This locking plate engages with a locking feature added to the lower guide rail, facilitating the pushing of the circuit breaker body to the isolated position of the drawer device and its release from the isolated position for easy removal. The structure is simple, the operation is reliable, and the installation is convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a skateboard locking device according to this utility model.

[0018] Figure 2 This is a schematic diagram of the locking plate of a skateboard locking device involved in this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of a skateboard with a skateboard locking device involved in this utility model.

[0020] Figure 4 This is a schematic diagram of the upper guide rail of a skateboard locking device involved in this utility model.

[0021] Figure 5 This is a schematic diagram of the lower guide rail of a skateboard locking device involved in this utility model.

[0022] Figure 6 This is a schematic diagram of the locked state of a skateboard locking device involved in this utility model.

[0023] Figure 7 This is a schematic diagram of the unlocked state of a skateboard locking device involved in this utility model.

[0024] Figure 8 This is a schematic diagram of the skateboard sliding out state of a skateboard locking device involved in this utility model.

[0025] Figure 9 This is a structural schematic diagram of the first unlocked state of a skateboard locking device involved in this utility model.

[0026] Figure 10 This is a schematic diagram of the first sliding process of a skateboard locking device according to this utility model.

[0027] Figure 11 This is a structural schematic diagram of the second unlocked state of a skateboard locking device involved in this utility model.

[0028] Figure 12 This is a schematic diagram of the second sliding process of a skateboard locking device involved in this utility model.

[0029] Figure 13 This is a schematic diagram of the lower guide rail of a skateboard locking device involved in Embodiment 2 of this utility model.

[0030] Figure 14 This is a schematic diagram of the state of a skateboard locking device according to Embodiment 2 of this utility model when the skateboard reaches its limit position.

[0031] Figure 15 This is a schematic diagram of the locked state of a skateboard locking device involved in Embodiment 2 of this utility model.

[0032] Figure 16 This is a schematic diagram of the lower guide rail of a skateboard locking device involved in Embodiment 3 of this utility model.

[0033] Figure 17 This is a schematic diagram of the state of a skateboard locking device according to Embodiment 3 of this utility model when the skateboard reaches its limit position.

[0034] Figure 18 This is a schematic diagram of the locked state of a skateboard locking device involved in Embodiment 3 of this utility model. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] Marker explanation:

[0037] Locking plate 1, locking edge 101, unlocking edge 102, transition edge 103, rotating hole 104, unlocking button 105, spring hook 106, limiting edge 107, support end 108.

[0038] Slide 2, handle 201, spring hole 202, stop rib 203, upper sliding edge 204, lower sliding edge 205, body groove 206.

[0039] Shaft 3.

[0040] The lower guide rail 4 has a first unlocking surface 401, a first transition surface 402, a locking surface 403, a second unlocking surface 404, a sliding surface 405, a locking plate recess 406, a lower slide groove 407, a locking plate protrusion 408, and a concave surface 409.

[0041] Upper guide rail 5, contact surface 501, upper slide groove 502.

[0042] Elastic component 6.

[0043] Example 1

[0044] Figure 1 As shown, this utility model provides a sliding plate locking device, including a locking plate 1, a sliding plate 2, a rotating shaft 3, a lower guide rail 4, an upper guide rail 5, and an elastic element 6. The circuit breaker body is relatively heavy. To ensure the circuit breaker body can be safely deployed into the drawer seat, two sliding plates 2 are generally arranged parallel to each other in the drawer seat. Each sliding plate 2 is equipped with a lower guide rail 4 and an upper guide rail 5 for guidance and support. A body groove 206 is provided on the sliding plate 2. During deployment, the lugs on both sides of the circuit breaker body are placed in the body groove 206, allowing the circuit breaker body to move flexibly on the drawer seat via the sliding plate 2. The direction of the circuit breaker body away from the drawer seat is outward, and the direction of the circuit breaker body towards the drawer seat is inward. The circuit breaker body and the sliding plate 2, lower guide rail 4, and upper guide rail 5 on the other side are not shown in this utility model.

[0045] Figure 3 As shown, the upper edge of the slide plate 2 is provided with an upper sliding edge 204, and the upper sliding edge 204 is provided with a downwardly recessed body groove 206. The side lug of the circuit breaker body can be placed in the body groove 206 and move together with the slide plate. The lower edge of the slide plate 2 is provided with a lower sliding edge 205. The slide plate 2 bends outward to form a handle 201, and the upper edge of the handle 201 is provided with a stop rib 203. The slide plate is also provided with a spring hole 202.

[0046] Figure 2 As shown, the locking plate 1 has a rotating hole 104, through which it is rotatably mounted on the slide plate 2. An unlocking button 105 is bent outwards at the upper end of the locking plate 1, and a limiting edge 107 is provided along the lower edge of the unlocking button 105. A protrusion for locking the slide plate 2 is provided near the outer side of the lower end of the locking plate 1. A locking edge 101 and an unlocking edge 102 are sequentially arranged on the protrusion from the outside inwards, and the locking edge 101 and unlocking edge 102 are smoothly transitioned by a transition edge 103. A spring hook 106 is also provided on the locking plate 1 for mounting an elastic element 6. The elastic element 6 causes the unlocking button 105 of the locking plate 1 to tend towards the handle 201 on the slide plate 2. Because the locking plate 1 is relatively long and slender, a support end 108 is also bent outwards towards the slide plate 2 to prevent the locking plate 1 from tilting during operation. When the locking plate 1 has a tendency to tilt, the support end 108 abuts against the sliding plate 2, thereby effectively limiting the degree of tilt of the locking plate 1.

[0047] Figure 5 As shown, the lower guide rail 4 has a recessed lower slide groove 407 facing the slide plate 2. The lower sliding edge 205 of the slide plate 2 can be placed in the lower slide groove 407, and the slide plate 2 can move inward or outward in the drawer seat via the lower slide groove 407. On the side of the lower guide rail 4 facing the slide plate 2 near the locking plate 1, from the outside to the inside, there are a first unlocking surface 401, a first transition surface 402, a locking surface 403, a locking plate recess 406, a second unlocking surface 404, and a sliding surface 405, with natural transitions between adjacent surfaces. The locking surface 403 is recessed and faces inward, and the second unlocking surface 404 is recessed and faces outward.

[0048] Figure 4 As shown, the upper guide rail 5 has a concave upper slide groove 502 facing the slide plate 2, and the upper slide groove 502 is parallel and opposite to the lower slide groove 407. The upper sliding edge 204 of the slide plate 2 can be placed in the upper slide groove 502, and the slide plate 2 can move inward or outward in the drawer seat via the upper slide groove 502. The upper guide rail 5 has a contact surface 501 on the side of the slide plate 2 near the locking plate 1.

[0049] according to Figures 6 to 12 The working method of this utility model will be further explained.

[0050] Figure 6 As shown, in the initial state, the locking plate 1 is located between the lower guide rail 4 and the upper guide rail 5. Under the action of the elastic element, the locking plate 1 causes the limiting edge 107 to be in close contact with the stop rib 203, and the unlocking button 105 of the locking plate 1 abuts against the handle 201 of the slide plate 2. At this time, the protrusion on the locking plate 1 for locking the slide plate 2 is located in the recess of the lower guide rail 4, which is surrounded by the locking surface 403, the locking plate recess 406, and the second unlocking surface 404. The locking edge 101 is opposite to the locking surface 403. When the handle 201 of the slide plate 2 is pulled and the slide plate 2 is pulled outward, the locking edge 101 on the locking plate 1 abuts against the locking surface 403 of the lower guide rail 4. The force of the lower guide rail 4 on the locking edge 101 makes the unlocking button 105 of the locking plate 1 rely only on the handle 201 of the slide plate 2. The locking plate 1 locks the slide plate 2 on the lower guide rail 4, and the slide plate 2 cannot be pulled outward. If the slide plate 2 is misoperated when it is in this position, the circuit breaker body will slide out.

[0051] Figure 7 As shown, when the circuit breaker body needs to be removed from the drawer seat, the unlock button 105 is pushed inward, and the locking plate 1 rotates on the sliding plate 2, causing the locking edge 101 to disengage from the locking surface 403. At this time, the lowest point below the locking plate 1 is the transition edge 103, and the transition edge 103 forms a disengagement distance with the first transition surface 402 on the lower guide rail 4. At this time, the sliding plate 2 is in the unlocked state and can be pulled outward.

[0052] Figure 8 As shown, the slide plate 2 is in the extended state. Under the action of the elastic element, the locking plate 1 makes the limiting edge 107 and the stop rib 203 fit tightly together, and the unlocking button 105 of the locking plate 1 abuts against the handle 201 of the slide plate 2. The body groove 206 on the slide plate 2 is exposed, and the side lug of the circuit breaker body can be placed into the body groove 206 or removed from the body groove 206.

[0053] Figure 9 As shown, when the slide plate 2 moves inward from the pulled-out state, the unlocking edge 102 on the locking plate 1 contacts the first unlocking surface 401 of the lower guide rail 4. The locking plate 1 rotates under the push of the lower guide rail 4, and the unlocking button 105 of the locking plate 1 separates from the handle 201 of the slide plate 2. The slide plate 2 drives the locking plate 1 to move inward.

[0054] Furthermore, such as Figure 10 As shown, during the inward movement of the skateboard 2, the unlocking edge 102 leaves the first unlocking surface 401, and the transition edge 103 contacts the first transition surface 402.

[0055] Figure 11As shown, the slide plate 2 moves further inward, and the locking plate 1 rotates under the action of the elastic element 6. The protrusion on the locking plate 1 used to lock the slide plate 2 falls back into the recess of the lower guide rail 4, which is surrounded by the locking surface 403, the locking plate recess 406, and the second unlocking surface 404. The unlocking button 105 re-contacts the handle 201. Then, the unlocking edge 102 and the transition edge 103 on the locking plate 1 contact the second unlocking surface 404 of the lower guide rail 4 in sequence. Under the push of the lower guide rail 4, the locking plate 1 rotates against the action of the elastic element 6.

[0056] Figure 12 As shown, the skateboard 2 moves further inward, the transition edge 103 contacts the sliding surface 405, and the unlock button 105 separates from the handle 201 again. At this time, the highest point of the locking plate 1 maintains a gap with the contact surface 501 of the upper guide rail 5, so that the skateboard 2 can be pushed inward.

[0057] In summary, the elastic element 6 causes the unlocking button 105 of the locking plate 1 to tend towards the handle 201 on the slide plate 2. In the initial and extended states of the slide plate 2, the unlocking button 105 of the locking plate 1 contacts the handle 201 under the action of the elastic element 6. When the slide plate 2 is pushed inward, the lower guide rail 4 unlocks the locking plate 1, allowing the slide plate 2 to be pushed inward. When the slide plate 2 is pulled outward, the locking plate 1 locks the slide plate 2 to the lower guide rail 4, preventing the slide plate 2 from being pulled out; when the slide plate 2 is pulled outward, pushing the unlocking button 105 inward releases the locking plate 1 from the slide plate 2, allowing the slide plate 2 to be pulled outward.

[0058] Example 2

[0059] like Figures 13-15 As shown, this application discloses another embodiment. Based on the above embodiment, the sliding surface 405 in this application is provided with a locking plate protrusion 408 that protrudes from the sliding surface 405 towards the guide rail. When the slide plate 2 is pushed inward, the locking plate protrusion 408 can abut against the unlocking edge 102 to overcome the elastic force of the elastic element and push the locking plate 1 to rotate on the slide plate. When the locking plate protrusion 408 abuts against the unlocking edge 102, it can keep the locking plate 1 and the slide plate 2 relatively stationary. It can be understood that the condition for maintaining relative stationaryness is that the frictional force between the slide plate 2 and the guide rail is greater than the rebound force of the elastic element.

[0060] In this embodiment, when the slide plate 2 is pushed inward to its limit position, that is, the locking plate protrusion 408 can abut against the unlocking edge 102 to overcome the elastic force of the elastic element and push the locking plate 1 to rotate on the slide plate 2. In this state, the presence of the locking plate protrusion 408 can prevent the transition edge 103 from contacting the sliding surface 405, thereby avoiding the phenomenon of indentation on the sliding surface 405 caused by the transition edge 103 pressing on the sliding surface 405 for a long time. Indentation is usually a pit. When indentation occurs, it will hinder the transition edge 103 from sliding freely on the sliding surface 405, making it inconvenient for the staff to pull out the slide plate 2. This embodiment overcomes this defect.

[0061] In some examples, the curvature of the outer surface or outer edge of the locking plate protrusion 408 is the same as that of the unlocking edge 102, which allows the outer surface or edge of the locking plate protrusion 408 to fit against the unlocking edge 102, reducing stress concentration.

[0062] Example 3

[0063] like Figures 16-18 As shown, this application discloses a third embodiment. This embodiment aims to achieve the same purpose as the second embodiment, avoiding indentations on the sliding surface 405 by the transition edge 103. Specifically, this embodiment is also an improvement on the first embodiment. Unlike the second embodiment, in this embodiment, the lower guide rail 4 is provided with a first unlocking surface 401, a first transition surface 402, a locking surface 403, and a concave surface 409 from the outside to the inside on the side of the slide plate 2 near the locking plate 1, with a natural transition between adjacent surfaces. The locking surface 403 is concave and faces inward, and the concave surface 409 extends inward to the limit position where the transition edge 103 can move inward. When the unlocking button is pressed against the handle 201, the height of the bottom of the locking plate 1 is not lower than the height of the concave surface 409.

[0064] In this embodiment, the length of the groove structure is much greater than that of the locking plate recess 406 in the embodiment. During the movement, because the height of the recess 409 is low, there is no interference between the bottom structure of the locking plate 1 and the recess 409. This avoids the occurrence of indentation caused by the bottom structure of the locking plate 1 (specifically the transition edge 103) pressing on the recess 409 for too long.

[0065] The above description is merely a preferred embodiment of this application and does not constitute any limitation on this application in any form or substance. It should be noted that those skilled in the art can make several improvements and additions without departing from this application, and these improvements and additions should also be considered within the scope of protection of this application. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the disclosed technical content without departing from the spirit and scope of this application are equivalent embodiments of this application; furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this application still fall within the scope of the technical solution of this application.

Claims

1. A skateboard locking device, comprising a locking plate (1), a skateboard (2), a rotating shaft (3), a lower guide rail (4), an upper guide rail (5), and an elastic element (6); The slide plate (2) is mounted between the lower guide rail (4) and the upper guide rail (5) and moves between them; Its features are, The skateboard (2) is provided with a handle (201); The lock plate (1) is provided with an unlock button (105); The locking plate (1) is rotatably mounted on the sliding plate (2); The elastic element (6) causes the unlocking button (105) of the lock plate (1) to tend to move closer to the handle (201) on the slide plate (2); When the slide plate (2) is pushed inward, the lower guide rail (4) unlocks the locking plate (1), allowing the slide plate (2) to be pushed inward. When the slide plate (2) is pulled outward, the locking plate (1) locks the slide plate (2) onto the lower guide rail (4); When the skateboard (2) is pulled outward, the unlock button (105) is pushed inward to release the lock plate (1) from locking the skateboard, and the skateboard (2) can be pulled outward.

2. A skateboard locking device according to claim 1, wherein, The locking plate (1) is provided with a rotating hole (104), and the locking plate (1) is rotatably mounted on the sliding plate (2) through the rotating hole (104); An unlocking button (105) is provided on the upper end of the lock plate (1) near the outer side, and a limiting edge (107) is provided on the lower edge of the unlocking button (105); The lower end of the lock plate (1) is provided with a locking edge (101) and an unlocking edge (102) from the outside to the inside. The locking edge (101) and the unlocking edge (102) are naturally and smoothly transitioned by a transition edge (103). The locking plate (1) is also provided with a spring hook (106).

3. A skateboard locking device according to claim 2, wherein, The lower guide rail (4) is provided with a recessed lower slide groove (407) facing the slide plate (2), and the slide plate (2) can be placed in the lower slide groove (407) and move. The lower guide rail (4) is provided with a first unlocking surface (401), a first transition surface (402), a locking surface (403), a locking plate recess (406), a second unlocking surface (404), and a sliding surface (405) on the side of the slide plate (2) near the locking plate (1) from the outside to the inside, with natural transition between each adjacent surface; The locking surface (403) is recessed inward, and the second unlocking surface (404) is recessed inward.

4. A skateboard locking device as defined in claim 1, wherein, The upper edge of the slide plate (2) is provided with an upper sliding edge (204), and the lower edge of the slide plate (2) is provided with a lower sliding edge (205); The skateboard (2) has a handle (201) facing outward, and a stop rib (203) is provided on the upper edge of the handle (201); The slide plate is also provided with spring holes (202).

5. A skateboard locking device as defined in claim 4, wherein, When the slide plate (2) is pulled outward, the locking edge (101) on the locking plate (1) abuts against the locking surface (403) of the lower guide rail (4), and the locking plate (1) locks the slide plate (2) on the lower guide rail (4), so the slide plate (2) cannot be pulled outward; When the slide plate (2) is pulled outward, if the unlock button (105) is pushed inward, the locking plate (1) rotates on the slide plate (2), the locking edge (101) disengages from the locking surface (403), and the slide plate (2) can be pulled outward; When the slide plate (2) is pushed inward, the first unlocking surface (401) and the second unlocking surface (404) of the lower guide rail (4) can push the locking plate (1) to rotate on the slide plate (2) via the unlocking edge (102) and the transition edge (103) on the locking plate (1), thereby unlocking the locking plate (1) and allowing the slide plate (2) to be pushed inward.

6. A skateboard locking device as defined in claim 3, wherein, The sliding surface (405) is provided with a locking plate protrusion (408) that protrudes upward from the sliding surface (405) towards the guide rail. When the sliding plate (2) is pushed inward, the locking plate protrusion (408) can abut against the unlocking edge (102) to overcome the elastic force of the elastic element and push the locking plate (1) to rotate on the sliding plate. With the locking plate protrusion (408) abutting against the unlocking edge (102), the locking plate (1) and the sliding plate (2) can remain relatively stationary.

7. A skateboard locking device as defined in claim 2, wherein, The lower guide rail (4) is provided with a recessed lower slide groove (407) facing the slide plate (2), and the slide plate (2) can be placed in the lower slide groove (407) and move. The lower guide rail (4) is provided with a first unlocking surface (401), a first transition surface (402), a locking surface (403) and a concave surface (409) in sequence from the outside to the inside on the side of the slide plate (2) near the locking plate (1), with natural transition between each adjacent surface; The locking surface (403) is concave and faces inward, and the concave surface (409) extends inward to the limit position where the transition edge (103) can move inward; when the unlocking button is pressed against the handle (201), the height of the bottom of the lock plate (1) is not lower than the height of the concave surface (409).

Images