A service vehicle roof self-locking device

Abstract

The utility model relates to a service car roof lid self -locking device. It includes frame, roof and hinge, the hinge is connected in the rear side of frame and roof, the bottom surface front side of roof is fixed with roof lock piece, the roof lock piece forms has the clamping slot and the joint part, the joint part is located below the clamping slot, the lock cylinder is installed on the front side board of frame, is equipped with the cam piece on the lock cylinder, the front side board of frame still is fixed with mounting seat, the sliding seat is slidably assembled on the mounting seat, is connected with reset spring between the sliding seat and the mounting seat, the upper end of sliding seat is equipped with the lock hook, the upside of lock hook is equipped with the guide inclined plane. When switching to the lock state, the utility model lid closes roof, can realize the effect that roof lock piece is automatically engaged with lock hook, so in actual use, the user need not carry the key, and it is convenient for unified management.

Description

Technical Field

[0001] This utility model relates to a locking mechanism, and more particularly to a self-locking device for the roof of a service vehicle. Background Technology

[0002] Tool service carts are primarily used for tool storage, transportation, and on-site operation support, suitable for various scenarios such as industrial production, maintenance, catering, and hotels. The main structure of a tool service cart consists of a wheeled vehicle and a storage box, which holds various tools. To prevent unauthorized use, the storage boxes on existing tool service carts are generally equipped with simple locks. These locks are simple in structure and can typically only be controlled by a key. To close the box, the lock must first be unlocked, then the door closed, and finally the lock locked again using the key. This operation method requires users to carry a key during use, which is inconvenient for management and poses a risk of key copying. Summary of the Invention

[0003] This utility model provides a self-locking device for the roof of a service vehicle; it solves the problem in the prior art that users need to carry a key throughout the use of the service vehicle, which makes management inconvenient.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a self-locking device for a service vehicle roof, comprising a frame, a roof, and a hinge, wherein the hinge is connected to the rear side of the frame and the roof, a roof locking plate is fixed to the front side of the bottom of the roof, the roof locking plate has a slot and a locking part, the locking part is located below the slot; a lock cylinder is installed on the front side plate of the frame, the lock cylinder is provided with a cam plate, a mounting base is also fixed on the front side plate of the frame, a sliding seat is slidably mounted on the mounting base, a return spring is connected between the sliding seat and the mounting base, a locking hook is provided at the upper end of the sliding seat, and a guide slope is provided on the upper side of the locking hook.

[0005] This invention controls the state of the lock cylinder and cam plate using a key. Rotating the lock cylinder forward and backward switches between unlocked and locked states. When locked, the sliding seat slides under the push of the return spring to abut against the small radius part of the cam plate. In this state, the lock hook on the sliding seat is located on the movement path of the top cover lock plate. When the top cover is folded down to close with the frame, the top cover lock plate abuts against the guide slope on the lock hook, thereby forcing the sliding seat to move towards the side that compresses the return spring. When the slot on the top cover lock plate is aligned with the lock hook, the return spring pushes the lock hook into the slot, thereby making the locking part on the top cover lock plate engage with the lock hook, achieving the effect of the top cover lock plate automatically engaging with the lock hook. When unlocked, the sliding seat slides under the push of the return spring to abut against the large radius part of the cam plate. In this state, the movement paths of the lock hook on the sliding seat and the top cover lock plate are completely misaligned, the top cover lock plate cannot engage with the lock hook, and the top cover can be opened and closed freely.

[0006] In practical use, the key is kept by a designated person. When the user needs to use the service vehicle, the key owner unlocks and opens the top cover, then switches the lock cylinder to the locked position, and then hands the service vehicle to the user. After use, the user can close the top cover and lock it automatically without needing a key.

[0007] Therefore, this utility model has the following characteristics compared with the prior art: 1. When switched to the locked state, when the top cover is closed, the top cover lock piece can automatically engage with the lock hook, so that in actual use, the user does not need to carry a key, which facilitates unified management. Attached Figure Description

[0008] Appendix Figure 1 This is a partial structural schematic diagram of the present invention;

[0009] Appendix Figure 2 This is a structural diagram of the top cover and hinge;

[0010] Appendix Figure 3 This is a schematic diagram of the lock cylinder structure;

[0011] Appendix Figure 4 This is a schematic diagram of the sliding seat structure;

[0012] Appendix Figure 5 This is a structural diagram of the sliding seat and the mounting base. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] Example 1: See Figure 1 , Figure 2 and Figure 4 A self-locking device for a service vehicle roof includes a frame 100, a roof 200, and a hinge 300. The hinge connects the frame and the rear side of the roof. A roof locking plate 10 is fixed to the front side of the bottom of the roof. The roof locking plate has a slot 11 and a locking part 12, with the locking part located below the slot. A lock cylinder 20 is installed on the front side plate of the frame. Figure 3 The lock cylinder is a 90° bullet lock, and the lock cylinder is provided with a cam plate 21, which is locked and fixed by a nut. The front side plate of the frame is also fixed with a mounting base 30, and a sliding seat 40 is slidably mounted on the mounting base. A return spring 50 is connected between the sliding seat and the mounting base. The upper end of the sliding seat is provided with a lock hook 60, and the upper side of the lock hook is provided with a guide slope 61.

[0016] In this embodiment, the lock cylinder and cam plate are controlled by a key. Rotating the lock cylinder forward and backward switches between the unlocked and locked states. When switched to the locked state, the sliding seat slides under the push of the return spring until it abuts against the small radius part of the cam plate. In this state, the lock hook on the sliding seat is located on the movement path of the top cover lock plate. When the top cover is flipped down and closed with the frame, the top cover lock plate abuts against the guide slope on the lock hook, thereby forcing the sliding seat to move towards the side that compresses the return spring. When the slot on the top cover lock plate is aligned with the lock hook, the return spring pushes the lock hook into the slot, thereby making the locking part on the top cover lock plate engage with the lock hook from top to bottom, achieving the effect that the top cover lock plate can automatically engage with the lock hook. When switched to the unlocked state, the sliding seat slides under the push of the return spring until it abuts against the large radius part of the cam plate. In this state, the movement paths of the lock hook on the sliding seat and the top cover lock plate are completely misaligned, the top cover lock plate cannot engage with the lock hook, and the top cover can be opened and closed freely.

[0017] In actual use, the key is kept by a designated person. When the user needs to use the service vehicle, the key owner unlocks and opens the top cover, then switches the lock cylinder to the locked position, and then hands the service vehicle to the user. After the user finishes using the vehicle, the top cover can be closed and automatically locked without the need for a key.

[0018] For details, see Figure 1 Two horizontally distributed sliding rods 70 are fixed on the sliding seat. The sliding rods are slidably assembled on the mounting seat, and a return spring is sleeved on the sliding rod.

[0019] For details, see Figure 5 The slide bar is divided into a long rod 71 and a short rod 72. The mounting base is provided with two spaced mounting pieces 31. The long rod is slidably inserted into both mounting pieces at the same time, and the short rod is slidably inserted into one mounting piece. The long rod is fixed with a first limiting piece 81 and a second limiting piece 82.

[0020] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A self-locking device for a service vehicle roof, comprising a frame, a roof, and a hinge, wherein the hinge is connected to the rear side of the frame and the roof, characterized in that: A top cover locking plate is fixed to the front side of the bottom of the top cover. The top cover locking plate has a slot and a locking part, with the locking part located below the slot. A lock cylinder is installed on the front side plate of the frame. The lock cylinder has a cam plate. A mounting base is also fixed to the front side plate of the frame. A sliding seat is slidably mounted on the mounting base. A return spring connects the sliding seat and the mounting base. A lock hook is provided at the upper end of the sliding seat, and a guide slope is provided on the upper side of the lock hook. Rotating the lock cylinder forward and backward can switch between the unlocked and locked states. When switched to the locked state, the sliding seat slides under the push of the return spring to abut against the small radius part of the cam plate. In this state, when the top cover is folded down to cover the frame, the top cover locking plate can automatically engage with the lock hook. When switched to the unlocked state, the sliding seat slides under the push of the return spring to abut against the large radius part of the cam plate. In this state, the top cover locking plate cannot engage with the lock hook.

2. The self-locking device for the service vehicle roof according to claim 1, characterized in that: Two horizontally distributed sliding rods are fixed on the sliding base. The sliding rods are slidably assembled on the mounting base, and the return spring is sleeved on the sliding rods.

3. The self-locking device for the service vehicle roof according to claim 2, characterized in that: The slide bar is divided into a long bar and a short bar. The mounting base is provided with two mounting pieces that are spaced apart from each other. The long bar is slidably inserted into both mounting pieces at the same time, and the short bar is slidably inserted into one of the mounting pieces. A first limiting piece and a second limiting piece are fixed on the long bar.

4. The self-locking device for the service vehicle roof according to claim 1, characterized in that: The lock cylinder is a 90° bullet lock.

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