Box door locking structure of semitrailer tool box

Abstract

The utility model discloses a box door locking structure of a semitrailer tool box, which comprises a tool box body, a box door is rotatably connected on the tool box body through a hinge, a lock frame is fixed on the tool box body, a lock block is fixed on the surface of the box door, one end of the lock block is arranged on the inner side of the lock frame, and the other end of the lock block is arranged on the outer side of the lock frame. Side cylinders are embedded in the two sides of the lock frame, the interiors of the side cylinders are slidably connected with check blocks, and one ends of the check blocks are located at the front ends of the lock blocks; by designing the lock frame, the side cylinder, the spring, the push plate, the lock block and the stop block, the lock block is fixed on the box door, when the box door is closed and locked, the upturning box door is closed, at the moment, the lock block and the stop block are in surface contact extrusion, the stop block is pushed to slide into the side cylinder under the extrusion acting force to avoid, and after the lock block moves into the lock frame, the lock frame is locked. The spring in the compressed state exerts elastic pushing effect on the stop block, one end of the stop block slides out of the side cylinder and is stopped at the front end of the locking block, and therefore the box door locking device can lock the box door conveniently and rapidly.

Description

Technical Field

[0001] This utility model belongs to the technical field of semi-trailer toolboxes, specifically relating to a door locking structure for a semi-trailer toolbox. Background Technology

[0002] The toolbox on a semi-trailer is the main storage compartment for operating tools on the vehicle, and can hold some commonly used items, such as automotive repair tools. Modern semi-trailer toolboxes generally use a latch mechanism for locking. For the sake of the toolbox's aesthetics and the secure fastening of the latch, it is usually fixed to the upper part of the toolbox body, and the latch engages to lock the toolbox door.

[0003] The existing locking structure for the toolbox of a semi-trailer has the following defects when used for locking the toolbox door: (1) When locking the toolbox door, the toolbox door needs to be closed by flipping it up first, then flipping up one end of the latch structure and locking it on the latch bracket, and then pressing down the latch to fix the toolbox door. This results in the toolbox door needing to be locked multiple times, causing the toolbox door to be locked in a complicated and inconvenient way. Therefore, we propose a locking structure for the toolbox door of a semi-trailer. Utility Model Content

[0004] The purpose of this utility model is to provide a locking structure for the toolbox door of a semi-trailer, so as to solve the problem that the locking structure mentioned in the background art requires multiple operations to lock the door, which makes locking the door cumbersome and inconvenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking structure for the door of a semi-trailer toolbox, comprising a toolbox body, a door rotatably connected to the toolbox body via a hinge, a lock frame fixed to the toolbox body, a lock block fixed to the surface of the door, one end of the lock block being placed inside the lock frame, side tubes embedded on both sides of the lock frame, a stop block slidably connected inside the side tube, one end of the stop block being at the front end of the lock block, a pull rod fixed to the other end of the stop block, the pull rod penetrating through the end face of the side tube, a push plate fixed to the end of the pull rod, and a spring provided at the other end of the stop block, the spring being inside the side tube.

[0006] Preferably, a sleeve is provided on the inner side of the spring, a sleeve is fitted on the outer wall of the sleeve, the sleeve is fixed on the inner wall of the side cylinder, and the sleeve is fixed on the surface of the stop block.

[0007] Preferably, the longitudinal sections of the sleeve rod and the sleeve are both circular, and the central axes of the sleeve rod and the sleeve coincide with each other.

[0008] Preferably, the surface of the stop block is provided with a spherical groove, and a ball bearing is embedded in the spherical groove.

[0009] Preferably, the longitudinal section of the lock frame is rectangular, and the cross section of the lock frame is U-shaped.

[0010] Preferably, the lock frame and the toolbox body are fixedly connected by welding, and the lock block and the box door are fixedly connected by welding.

[0011] Preferably, the longitudinal section of the push plate is rectangular, and a rubber pad is fixed to the surface of the push plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The lock block is fixed to the box door by means of the designed lock frame, side tube, spring, push plate, lock block and stop block. When the box door is closed and locked, the box door is closed by flipping up. At this time, the surfaces of the lock block and the stop block are in contact and squeezed. Under the squeezing force, the stop block is pushed into the side tube to avoid. After the lock block moves into the inside of the lock frame, the spring in the compressed state applies elastic force to the stop block, so that one end of the stop block slides out from the side tube and blocks the front end of the lock block. This utility model makes it convenient and quick to lock the box door. At the same time, when opening the box door, it is only necessary to push the push plate to drive the stop block into the side tube to achieve quick unlocking and open the toolbox door. The designed sleeve and sleeve support and correct the spring to prevent the spring from bending excessively and losing elasticity. The designed ball bearing plays a lubricating role and reduces the frictional resistance when the surface of the stop block and the surface of the lock block are squeezed. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention;

[0015] Figure 2 This utility model Figure 1 Enlarged view of point A in the image;

[0016] Figure 3 This is a partial side view of the toolbox of this utility model;

[0017] Figure 4 This is a top sectional view of the assembly of the lock frame, lock block, stop block and side tube of this utility model;

[0018] In the diagram: 1. Toolbox body; 2. Box door; 3. Lock block; 4. Rubber pad; 5. Push plate; 6. Pull rod; 7. Side cylinder; 8. Stop block; 9. Ball bearing; 10. Lock frame; 11. Spring; 12. Sleeve; 13. Sleeve rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a locking structure for the door of a semi-trailer toolbox, including a toolbox body 1, a door 2 rotatably connected to the toolbox body 1 via a hinge, a lock frame 10 fixed to the toolbox body 1, a lock block 3 fixed to the surface of the door 2, one end of the lock block 3 being placed inside the lock frame 10, side tubes 7 being inlaid on both sides of the lock frame 10, and a stop block 8 being slidably connected inside the side tube 7, one end of the stop block 8 being at the front end of the lock block 3, and a pull rod 6 fixed to the other end of the stop block 8, the pull rod 6 passing through the end face of the side tube 7, a push plate 5 fixed to the end of the pull rod 6, and a spring 11 provided at the other end of the stop block 8. Through the designed lock frame 10, side tubes 7, spring 11, and push plate... 5. Locking block 3 and stop block 8: Locking block 3 is fixed to the box door 2. When the box door 2 is closed and locked, the box door 2 is closed by flipping it up. At this time, the surfaces of locking block 3 and stop block 8 are in contact and pressed. Under the pressing force, the stop block 8 is pushed into the side cylinder 7 to avoid the block. After the locking block 3 moves into the inside of the lock frame 10, the spring 11 in the compressed state applies an elastic force to the stop block 8, causing one end of the stop block 8 to slide out from the side cylinder 7 and block the front end of the locking block 3. This makes it convenient and quick to lock the box door 2. At the same time, when opening the box door 2, it is only necessary to push the push plate 5 to drive the stop block 8 into the side cylinder 7 to achieve quick unlocking, so that the toolbox door 2 is opened and the spring 11 is inside the side cylinder 7.

[0022] In this embodiment, preferably, a sleeve rod 13 is provided on the inner side of the spring 11, and a sleeve 12 is sleeved on the outer wall of the sleeve rod 13. The sleeve 12 is fixed on the inner wall of the side cylinder 7, and the sleeve rod 13 is fixed on the surface of the stop block 8. The longitudinal section of both the sleeve rod 13 and the sleeve 12 is circular. Through the design of the sleeve rod 13 and the sleeve 12, the spring 11 is supported and corrected to prevent the spring 11 from bending excessively and losing its elasticity. The central axes of the sleeve rod 13 and the sleeve 12 coincide with each other.

[0023] In this embodiment, preferably, the surface of the stop block 8 is provided with a spherical groove, and a ball bearing 9 is embedded in the spherical groove. The ball bearing 9 is designed to play a lubricating role, reducing the frictional resistance caused by the pressure between the surface of the stop block 8 and the surface of the lock block 3. The longitudinal section of the lock frame 10 is a rectangular structure, and the cross section of the lock frame 10 is a U-shaped structure. The lock frame 10 and the toolbox body 1 are fixedly connected by welding. The lock block 3 and the box door 2 are fixedly connected by welding. The longitudinal section of the push plate 5 is a rectangular structure, and a rubber pad 4 is fixed on the surface of the push plate 5.

[0024] The working principle and usage process of this utility model are as follows: This utility model fixes the locking block 3 to the box door 2. When the box door 2 is closed and locked, the box door 2 is closed by flipping it up. At this time, the locking block 3 and the stop block 8 are in contact and pressed together. Under the pressing force, the stop block 8 is pushed into the side cylinder 7 to avoid the block. After the locking block 3 moves into the lock frame 10, the spring 11 in the compressed state applies an elastic force to the stop block 8, causing one end of the stop block 8 to slide out from the side cylinder 7 and block the front end of the locking block 3. This utility model makes it convenient and quick to lock the box door 2. At the same time, when opening the box door 2, it is only necessary to push the push plate 5 to drive the stop block 8 into the side cylinder 7 to quickly unlock the toolbox and open the box door 2.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A box door locking structure of a semi-trailer tool box, comprising a tool box body (1), a box door (2) being rotatably connected to the tool box body (1) through a hinge, characterized in that: The tool box body (1) is fixed with a lock holder (10), the box door (2) is fixed with a lock block (3), one end of the lock block (3) is placed inside the lock holder (10), both sides of the lock holder (10) are inlaid with side cylinders (7), the inside of the side cylinder (7) is connected with a stop block (8) through sliding, one end of the stop block (8) is in front of the lock block (3), the other end of the stop block (8) is fixed with a pull rod (6), the pull rod (6) penetrates the end face of the side cylinder (7), the end of the pull rod (6) is fixed with a push plate (5), the other end of the stop block (8) is provided with a spring (11), and the spring (11) is inside the side cylinder (7).

2. The box door locking structure of a semitrailer tool box according to claim 1, characterized in that: The inside of the spring (11) is provided with a sleeve rod (13), the outer wall of the sleeve rod (13) is sleeved with a sleeve (12), the sleeve (12) is fixed on the inner wall of the side cylinder (7), and the sleeve rod (13) is fixed on the surface of the stop block (8).

3. The box door locking structure of a semitrailer tool box according to claim 2, characterized in that: The longitudinal section of the sleeve rod (13) and the sleeve (12) is a circular structure, and the central axes of the sleeve rod (13) and the sleeve (12) coincide with each other.

4. The box door locking structure of a semitrailer tool box according to claim 1, characterized in that: The surface of the stop block (8) is provided with a spherical groove, and the spherical groove is inlaid with a ball (9).

5. The box door locking structure of a semitrailer tool box according to claim 1, characterized in that: The longitudinal section of the lock holder (10) is a rectangular structure, and the cross section of the lock holder (10) is a U-shaped structure.

6. The box door locking structure of a semitrailer tool box according to claim 1, characterized in that: The lock holder (10) and the tool box body (1) are fixedly connected by welding, and the lock block (3) and the box door (2) are fixedly connected by welding.

7. The box door locking structure of a semitrailer tool box according to claim 1, characterized in that: The longitudinal section of the push plate (5) is a rectangular structure, and the surface of the push plate (5) is fixed with a rubber pad (4).

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