Locking mechanism and vehicle

Abstract

The locking mechanism comprises a lock body, a lock cylinder connected in the lock body, a limiting plate and an inhaul cable, the bottom end of the lock cylinder is provided with a long circular boss, the limiting plate is provided with a rectangular hole, the boss extends out of the lower portion of the lock body and is connected in the rectangular hole in a matched mode, one end of the inhaul cable is connected with the limiting plate, and the other end of the inhaul cable is connected with the limiting plate. The inhaul cable is controlled to drive the limiting plate to slide in the rectangular hole, so that the limiting plate locks or opens the trunk cover plate. The locking mechanism is simple in structure, locking and opening of the trunk cover plate can be achieved through the inhaul cable under the condition that a key is not carried, protection on the controller is achieved, and man-made damage or interference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to a locking mechanism and a vehicle. Background Art

[0002] A spare tire is usually placed in the trunk of an ordinary vehicle (a few vehicles do not have a spare tire in the trunk). To ensure the flatness of the trunk, a trunk cover is usually provided to cover the spare tire or sheet metal, so that users can place items neatly. For ordinary vehicles, it is only necessary to cooperate and lap the trunk cover with the side enclosing plate to play a covering role.

[0003] However, for autonomous vehicles, since there are many controllers, the controllers need to be centrally placed in the trunk (the autonomous vehicle can cancel the spare tire). Since the controller is an important component of the autonomous vehicle, if it is only covered by lapping the trunk cover, the controller is easily damaged by people, causing huge losses to the vehicle and affecting the normal use of the vehicle. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a locking mechanism and a vehicle, which can realize the locking and opening of the trunk cover and avoid artificial damage or interference with the controller.

[0005] In a first aspect, an embodiment of the utility model provides a locking mechanism, which includes:

[0006] A lock body;

[0007] A lock core, connected in the lock body, the bottom end of the lock core has an oblong boss, and the boss extends out from below the lock body;

[0008] A limiting plate, provided with a rectangular hole, and the boss is cooperatively connected in the rectangular hole;

[0009] A cable, one end of which is connected to the limiting plate, and the cable is controlled to drive the limiting plate to slide in the rectangular hole.

[0010] Further, the boss is provided with a threaded hole, and the locking mechanism further includes a locking head, and the limiting plate is screwed in the threaded hole through the locking head to be connected between the lock core and the locking head.

[0011] Further, the locking mechanism further includes:

[0012] A cable sleeve, both ends of the cable sleeve are respectively connected with a first end head and a second end head, the cable is movably arranged in the cable sleeve, the first end head and the second end head, and the first end and the second end of the cable respectively extend out from the first end head and the second end head, and the first end of the cable is connected to the limiting plate;

[0013] The bent plate is fixed on the part of the lock core exposed from the lock body. A first fixing hole is provided on the bent plate, and the first end is fixed in the first fixing hole;

[0014] The elastic reset member is connected between the bent plate and the limiting plate, and the elastic reset member pushes the limiting plate to reset by elastic force.

[0015] Furthermore, the locking mechanism further includes a fixing plate fixed to one end of the limiting plate facing the cable. The fixing plate is provided with a clamping groove, and the first end of the cable is clamped in the clamping groove.

[0016] Furthermore, the bent plate includes:

[0017] The first bent part, one end of which is fixedly connected to the lock core, and the other end extends toward the side of the cable;

[0018] The second bent part is connected end to end with the first bent part. The free end of the second bent part extends toward the side away from the lock body, and the first fixing hole is provided on the second bent part.

[0019] Furthermore, the locking mechanism further includes a pull ring connected to the second end of the cable. The pull ring pulls the cable and drives the limiting plate to slide.

[0020] Furthermore, the lock core is rotatably connected in the lock body. A keyhole is provided at the top of the lock core, and the keyhole is exposed from the top surface of the lock body;

[0021] The locking mechanism further includes a key, which is cooperatively connected with the keyhole. The key rotates the lock core and drives the limiting plate to rotate.

[0022] Furthermore, two first connecting plates are symmetrically arranged on the outer side of the lock body, and connection holes are provided on the first connecting plates.

[0023] In a second aspect, an embodiment of the present invention provides a vehicle, which includes:

[0024] The trunk lid is provided with opening grooves on both sides;

[0025] Two side enclosing plates are respectively arranged on both sides of the trunk lid;

[0026] Two locking mechanisms as described in the first aspect are respectively arranged below the two side enclosing plates. The lock body is fixedly connected to the side enclosing plate. The limiting plate is inserted into the opening groove to lock the trunk lid, and the cable is configured to be controlled to drive the limiting plate to slide out of the opening groove to open the trunk lid.

[0027] Further, the locking mechanism further includes a pull ring connected to the second end of at least one of the cables. The pull ring pulls the cable to drive the limiting plate to slide.

[0028] The side enclosure panel is provided with a first mounting hole and a second mounting hole. The top surface of the lock body is exposed from the first mounting hole. A cover is detachably connected to the second mounting hole, and the cover is arranged corresponding to the position of the pull ring.

[0029] An embodiment of the present invention provides a locking mechanism and a vehicle. The locking mechanism includes a lock body, a lock core connected in the lock body, a limiting plate, and a cable. The bottom end of the lock core has an oblong boss, and the limiting plate is provided with a rectangular hole. The boss extends from below the lock body and is fitted and connected in the rectangular hole. One end of the cable is connected to the limiting plate, and the cable can be controlled to drive the limiting plate to slide in the rectangular hole, so that the limiting plate locks or opens the trunk cover. The structure of the locking mechanism is simple, and the trunk cover can be locked and opened by the cable without carrying a key, realizing the protection of the controller and avoiding human damage or interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Through the following description of the embodiments of the present invention with reference to the accompanying drawings, the above and other objects, features, and advantages of the present invention will become clearer. In the drawings:

[0031] Figure 1 is a top view of the vehicle according to an embodiment of the present invention;

[0032] Figure 2 is a bottom view of the locking mechanism inside the vehicle according to an embodiment of the present invention;

[0033] Figure 3 is a top view of the relative position between the locking mechanism and the trunk cover according to an embodiment of the present invention;

[0034] Figure 4 is a schematic structural view of the locking mechanism and the trunk cover according to an embodiment of the present invention;

[0035] Figure 5 is a partial structural view of the locking mechanism according to an embodiment of the present invention;

[0036] Figure 6 is an exploded view of the locking mechanism according to an embodiment of the present invention.

[0037] Reference numerals:

[0038] 1 - Lock body; 2 - Lock core; 21 - Boss; 22 - Threaded hole; 23 - Keyhole; 3 - Limiting plate; 31 - Rectangular hole; 32 - Fixed plate; 33 - Card slot; 4 - Cable; 5 - Locking head; 6 - Cable sleeve; 7 - First end; 8 - Second end; 9 - Bending plate; 91 - First fixing hole; 92 - First bending part; 93 - Second bending part; 10 - Elastic resetting member; 11 - Pull ring; 12 - Key; 13 - First connecting plate; 131 - Connecting hole; A - Trunk cover plate; A1 - Opening groove; B - Side enclosure panel; C - Locking mechanism. Detailed implementation manners

[0039] The following describes the present application based on embodiments, but the present application is not limited to these embodiments. In the following detailed description of the present application, some specific details are described in detail. Those skilled in the art can fully understand the present application without the description of these details. In order to avoid obscuring the essence of the present application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0040] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0041] Unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] Unless the context clearly requires otherwise, words such as "including" and "comprising" in the entire application document should be interpreted as having an inclusive meaning rather than an exclusive or exhaustive meaning; that is, it is the meaning of "including but not limited to".

[0043] In the description of the present application, it should be understood that terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0044] Figure 1 and Figure 2It is a schematic structural diagram of a locking mechanism installed on a vehicle. Among them, the locking mechanism C is installed below the side enclosing plates B on both sides of the trunk lid A, and it can lock the trunk lid A, which can prevent others from randomly opening the trunk lid A and damaging the controller and the like placed inside, thereby improving the safety performance of the vehicle.

[0045] The locking mechanism C includes a lock body 1, a lock core 2, a limiting plate 3, and a cable 4, as Figures 3 - 6 shown. Among them, the lock body 1 is fixed on the side enclosing plate B and is located on one side of the trunk lid A. The lock body 1 can be a cylinder, a cube, etc.

[0046] An assembly hole is provided in the lock body 1, and the lock core 2 is installed in the assembly hole and connected to the lock body 1. The bottom end of the lock core 2 has an oblong boss 21, as Figure 6 shown. The oblong boss 21 means that the cross-sectional area of the boss 21 is a rectangle, and the relatively short opposite sides of the rectangle are arcs. After the lock core 2 and the lock body 1 are installed, the boss 21 extends out from below the lock body 1.

[0047] One end of the limiting plate 3 is provided with a rectangular hole 31, as Figure 6 shown. The other end of the limiting plate 3 extends toward the side of the trunk lid A and is used to be clamped in the opening groove A1 of the trunk lid A, thereby locking the trunk lid A. The width of the rectangular hole 31 matches the width of the boss 21, so that the boss 21 can be inserted and connected into the rectangular hole 31, realizing the connection between the lock core 2 and the limiting plate 3. At the same time, the length of the rectangular hole 31 is greater than the length of the boss 21, so that the limiting plate 3 can move relative to the boss 21 (lock core 2), and the limiting plate 3 can be disengaged from the opening groove A1 of the trunk lid A.

[0048] Among them, the boss 21 is provided with a threaded hole 22, and the locking mechanism C further includes a locking head 5, as Figure 6 shown. As Figure 5 shown, after the boss 21 extends out from the assembly hole, it is inserted into the rectangular hole 31 of the limiting plate 3, and then the locking head 5 is screwed into the threaded hole 22 from the side of the limiting plate 3 away from the lock body 1, thereby restricting the limiting plate 3 between the lock core 2 and the locking head 5. Among them, the end dimension of the locking head 5 is greater than the width of the rectangular hole.

[0049] One end of the cable 4 is connected to the limiting plate 3, and the other end of the cable 4 is placed at a position where it can be manually pulled by a professional (such as a maintenance engineer, etc.). When the professional pulls the other end of the cable 4, the cable 4 is controlled to drive the limiting plate 3 to slide in the rectangular hole 31, so that the limiting plate 3 moves toward the side away from the trunk lid A, and thus disengages from the opening groove A1. In this embodiment, the method of pulling the limiting plate 3 to slide by the cable 4 and disengaging from the trunk lid A can facilitate professionals who forget to carry the key or lose the key to open the trunk lid A.

[0050] As Figure 4 and Figure 6 shown, the locking mechanism C further includes a cable sheath 6, a first end 7, a second end 8 and a bending plate 9. The first end 7 and the second end 8 are respectively connected to both ends of the cable sheath 6. The cable 4 is movably arranged in the cable sheath 6, the first end 7 and the second end 8, and the first end and the second end of the cable 4 respectively extend out from the first end 7 and the second end 8. The cable sheath 6 is used to protect the cable 4, and at the same time limit the moving direction and length of the cable 4. The first end 7 and the second end 8 are respectively used to be fixed to the lock body 1 and the side enclosure B or sheet metal, thereby realizing the limitation of the moving direction and length of the cable 4.

[0051] The bending plate 9 is fixed on a part of the lock core 2 exposed from below the lock body 1. Specifically, the fixing position of the bending plate 9 is on the side surface of the lock core 2 between the bottom surface of the lock body 1 and the boss 21, as Figure 6 shown. Among them, the bending plate 9 extends towards the side away from the trunk lid A, and the other end of the bending plate 9 is bent and arranged opposite to the limiting plate 3. A first fixing hole 91 is provided on the bending plate 9, and the first end 7 can be fixed in the first fixing hole 91 by snap connection. The second end 8 can be snap-connected and fixed to the side enclosure or sheet metal, and the length direction of the cable sheath 6 is restricted by the first end 7 and the second end 8. The cable 4 can move along the length direction of the cable sheath 6.

[0052] Among them, the bending plate 9 includes a first bending portion 92 and a second bending portion 93, as Figure 6 shown. One end of the first bending portion 92 is fixedly connected to the lock core 2, and the other end extends horizontally towards the side of the cable 4 and is connected end to end with one end of the second bending portion 93. The other end (i.e., the free end) of the second bending portion 93 extends towards the side away from the lock body 1, and the first bending portion 92 and the second bending portion 93 are vertically arranged. The first fixing hole 91 is provided on the second bending portion 93, and the second bending portion 93 is arranged opposite to the limiting plate 3. The first end 7 is snap-connected and fixed in the first fixing hole 91, so that after the first end of the cable 4 extends out from the first end 7, it can be directly fixedly connected to the limiting plate 3, avoiding the bending of the cable 4 from affecting the movement of the cable 4 to pull the limiting plate 3.

[0053] In other embodiments, the bending plate 9 can also be fixed on the side surface of the lock body 1, and the bending plate 9 can extend downward and be arranged opposite to the limiting plate 3.

[0054] As Figure 6As shown, the locking mechanism C further includes a fixing plate 32, which is fixed to one end of the limiting plate 3 facing the cable 4. Optionally, the fixing plate 32 is perpendicularly connected to the limiting plate 3. The fixing plate 32 is provided with a clamping groove 33, and the first end of the cable 4 is clamped and fixed in the clamping groove 33, so that the cable 4 is fixedly connected to the limiting plate 3. Among them, the clamping groove 33 may have a lateral opening, and the end of the first end of the cable 4 is larger than the size of the middle position, so that the cable 4 can be clamped in the clamping groove 33 through the lateral opening. The above method enables the cable 4 to be quickly connected to the fixing plate 32, and at the same time, it is also convenient for disassembly and installation.

[0055] As Figure 5 and Figure 6 shown, the locking mechanism C further includes an elastic reset member 10. The elastic reset member 10 is connected between the bent plate 9 and the limiting plate 3, that is, between the second bent portion 93 and the fixing plate 32. The elastic reset member 10 pushes the limiting plate 3 to reset by elastic force. That is to say, when the cable 4 is not controlled by an external force, the elastic reset member 10 pushes the limiting plate 3 to reset by elastic force, thereby driving the cable 4 to reset. In this embodiment, the elastic reset member 10 pushes the limiting plate 3 to reset so that the limiting plate 3 is clamped to the trunk lid A after reset.

[0056] As Figure 3 and Figure 4 shown, the locking mechanism C further includes a pull ring 11, and the pull ring 11 is connected to the second end of the cable 4. The pull ring 11 is convenient for professionals to operate, so as to pull the cable 4 and drive the limiting plate 3 to slide. Among them, the pull ring 11 can be arranged inside the side guard plate B. A buckle cover is arranged on the side guard plate B. When the pull ring 11 needs to be used, the buckle cover is disassembled, and pulling the pull ring 11 can open the locking mechanism C. After use, the buckle cover can be installed in place to block the pull ring 11.

[0057] In this embodiment, the lock core 2 can be rotatably connected in the lock body 1, that is, the assembly hole is a cylindrical hole, and the lock core 2 is a cylinder and rotates in the assembly hole of the lock body 1. Among them, a keyhole 23 is provided at the top end of the lock core 2, and the keyhole 23 is exposed from the top surface of the lock body 1. When the locking mechanism C is installed on the side guard plate B, the keyhole 23 can be exposed. The locking mechanism C further includes a key 12, as Figure 5 shown. The key 12 can be cooperatively connected with the keyhole 23. Professionals can rotate the lock core 2 through the key 12. Since the bottom end of the lock core 2 is clamped to the rectangular hole 31 of the limiting plate 3 through the boss 21, the lock core 2 can drive the limiting plate 3 to rotate when rotating, so that the clamping or disengaging of the limiting plate 3 from the opening groove A1 realizes the locking or opening of the trunk lid A. That is to say, the rectangular hole provided on the limiting plate 3, in cooperation with the boss 21 of the lock core 2, enables the limiting plate 3 to rotate and slide, so that the locking mechanism C has two locking methods, which is more suitable for use in different scenarios.

[0058] In this embodiment, the arc side of the boss 21 is the same as the outer side of the lock core 2. The boss 21 can also be set as a rectangle, and the sides of the rectangle shall not exceed the side of the lock core 2.

[0059] Among them, the installation method of the lock core 2 and the lock body 1 is the same as that of the common lock core 2 and the lock body 1. After the lock core 2 is installed in the lock body 1, it will not move axially along the lock body 1.

[0060] In this embodiment, two first connecting plates 13 are symmetrically arranged on the outer side of the lock body 1, as Figure 5 and Figure 6 shown. A connection hole 131 is arranged on the first connecting plate 13. When the lock body 1 is installed with the side enclosing plate, the two first connecting plates 13 are abutted against the inner side of the side enclosing plate, and then fixed by bolts.

[0061] In this embodiment, the normal operation of the limit plate 3 is to rotate the lock core 2 by the key 12, and the lock core drives the limit plate 3 to engage or disengage from the opening groove A1 of the trunk lid A; when the key 12 is not used, for example, when the limit plate 3 is just engaged in the opening groove A1, at this time, the pull ring 11 can be pulled, and the cable 4 drives the limit plate 3 to slide. When the sliding distance exceeds the engagement amount of the limit plate 3, the trunk lid A can also be opened at this time.

[0062] The locking mechanism of this embodiment can lock and open the trunk lid in two ways (key or cable), which is more suitable for use in multiple scenarios.

[0063] This embodiment also provides a vehicle, which includes a trunk lid A, two side enclosing plates B and two locking mechanisms C. The two side enclosing plates B are respectively arranged on both sides of the trunk lid A, and the two locking mechanisms C are respectively arranged below the two side enclosing plates B, and can be respectively used to lock both sides of the trunk lid A. The structure of the locking mechanism C is the same as that of the above embodiment, and will not be described in detail here. Among them, opening grooves A1 are respectively arranged on both sides of the trunk lid A. The limit plates 3 of the two locking mechanisms C can be respectively inserted into the opening grooves A1 on both sides, so as to lock the trunk lid A.

[0064] Among them, the side enclosing panel B is provided with a first mounting hole and a second mounting hole. The locking mechanism C is fixedly connected to the side enclosing panel B through the lock body 1. The top surface of the lock body 1 is exposed from the first mounting hole, thereby exposing the keyhole, so that professionals, etc. can open the trunk lid A by inserting a key into the keyhole. A cover is detachably connected to the second mounting hole, and the cover is arranged corresponding to the position of the pull ring 11, that is, the pull ring 11 is located below the corresponding cover of the side enclosing panel. When the key is lost or forgotten to be carried, the cover can be opened to pull the pull ring 11 to open the trunk lid A. The purpose of opening the trunk lid by the cable method is to prevent ordinary users from randomly opening the trunk lid. Therefore, the cover has the complexity of disassembly and assembly, is not easy to identify and operate, and requires professional operation.

[0065] In one embodiment, a pull ring 11 is connected to the second end of the cable 4 of each locking mechanism C. A cover is installed at the corresponding position of the pull ring 11 on each side enclosing panel B. When it is necessary to open the trunk lid A, the two pull rings 11 need to be pulled respectively, so that both sides of the trunk lid A are opened. That is to say, the two cables 4 are arranged independently on both sides and controlled independently.

[0066] In another embodiment, the second ends of the two cables 4 can be placed together and connected to the same pull ring. At this time, when opening the trunk lid A, only one pull ring 11 needs to be pulled, so that the two cables 4 drive their respective limit plates 3 to slide out of the opening groove A1.

[0067] The trunk lid of this embodiment is provided with a locking mechanism on both sides of the side enclosing panel. The locking mechanism can be opened or locked by a key, and can also be opened or locked by pulling the cable with a pull ring, which has a double insurance function and can be applied to multiple scenarios to avoid human damage or interference.

[0068] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A locking mechanism, characterized in that: The locking mechanism (C) comprises: Lock body (1); A lock core (2) connected to the lock body (1), the bottom end of the lock core (2) having an oblong boss (21), the boss (21) extending from the bottom of the lock body (1); The limiting plate (3) is provided with a rectangular hole (31), and the boss (21) is cooperatively connected in the rectangular hole (31); A pull cable (4) has one end connected to the limit plate (3), and the pull cable (4) is controlled to drive the limit plate (3) to slide in the rectangular hole (31).

2. The locking mechanism according to claim 1, characterized in that: The boss (21) is provided with a threaded hole (22), the locking mechanism (C) further comprises a locking head (5), and the limit plate (3) is screwed into the threaded hole (22) through the locking head (5) to be connected between the lock core (2) and the locking head (5).

3. The locking mechanism according to claim 1 or 2, characterized in that: The locking mechanism (C) further comprises: A cable sleeve (6), wherein the two ends of the cable sleeve (6) are respectively connected to a first end head (7) and a second end head (8), the cable (4) is movably arranged in the cable sleeve (6), the first end head (7) and the second end head (8), and the first end and the second end of the cable (4) are respectively extended from the first end head (7) and the second end head (8), and the first end of the cable (4) is connected to the limit plate (3); A bending plate (9) is fixed on the portion of the lock core (2) exposed from the lock body (1), the bending plate (9) is provided with a first fixing hole (91), and the first end head (7) is fixed in the first fixing hole (91); An elastic reset member (10) is connected between the bending plate (9) and the limiting plate (3), and the elastic reset member (10) pushes the limiting plate (3) to reset by elastic force.

4. The locking mechanism according to claim 3, characterized in that: The locking mechanism (C) further comprises a fixing plate (32) fixed to one end of the limit plate (3) facing the cable (4); the fixing plate (32) is provided with a slot (33), and the first end of the cable (4) is stuck in the slot (33).

5. The locking mechanism according to claim 3, characterized in that: The bending plate (9) comprises: A first bent portion (92), one end of which is fixedly connected to the lock core (2) and the other end of which extends toward one side of the cable (4); The second bending portion (93) is connected end to end with the first bending portion (92), the free end of the second bending portion (93) extends toward a side away from the lock body (1), and the first fixing hole (91) is arranged on the second bending portion (93).

6. The locking mechanism according to claim 3, characterized in that: The locking mechanism (C) further comprises a pull ring (11) connected to the second end of the pull cable (4); the pull ring (11) pulls the pull cable (4) and drives the limit plate (3) to slide.

7. The locking mechanism according to claim 1 or 2, characterized in that: The lock core (2) is rotatably connected in the lock body (1); a keyhole (23) is provided at the top of the lock core (2), and the keyhole (23) is exposed from the top surface of the lock body (1); The locking mechanism (C) further comprises a key (12), wherein the key (12) is cooperatively connected with the keyhole (23), and the key (12) rotates the lock core (2) and drives the limit plate (3) to rotate.

8. The locking mechanism according to claim 1, characterized in that: Two first connecting plates (13) are symmetrically arranged on the outer side of the lock body (1), and connecting holes (131) are arranged on the first connecting plates (13).

9. A vehicle, characterized in that: The vehicle comprises: A trunk cover (A) is provided with opening grooves (A1) on both sides; Two side enclosure panels (B) are respectively arranged on both sides of the trunk cover panel (A); Two locking mechanisms (C) as described in any one of claims 1 to 8 are respectively arranged under the two side enclosure panels (B), the lock body (1) is fixedly connected to the side enclosure panels (B), the limit plate (3) is inserted into the opening groove (A1) to lock the trunk cover (A), and the cable (4) is configured to controllably drive the limit plate (3) to slide out of the opening groove (A1) to open the trunk cover (A).

10. The vehicle according to claim 9, characterized in that The locking mechanism (C) further comprises a pull ring (11) connected to the second end of at least one of the cables (4), wherein the pull ring (11) pulls the cable (4) to drive the limit plate (3) to slide; The side enclosure plate (B) is provided with a first mounting hole and a second mounting hole, the top surface of the lock body (1) is exposed from the first mounting hole, and a buckle cover is detachably connected to the second mounting hole, and the buckle cover is arranged corresponding to the position of the pull ring (11).

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