Locking device

Abstract

The utility model discloses a locking device which comprises an installation seat and a lock catch, the installation seat is provided with a first containing cavity, a first limiting sleeve and a second limiting sleeve are arranged in the first containing cavity, a plurality of first check blocks are arranged at the bottom of the first limiting sleeve, and the outer diameters of the first check blocks are gradually reduced from top to bottom. The second limiting sleeve is provided with a plurality of second check blocks which are arranged at intervals and located between every two adjacent first check blocks, the outer diameters of the second check blocks are gradually reduced from bottom to top, the mounting base is slidably connected with a lock rod, the lock rod is provided with a pressure spring in a penetrating mode, and the lock rod is provided with a clamping protrusion and a sliding rod. The first check block and the two adjacent second check blocks form a sliding way used for containing the sliding rod and guiding the sliding direction of the sliding rod. The locking rod moves downwards by pressing the clamping protrusion, the sliding rod on the locking rod can slide along the sliding way formed by the first check block and the second check block, the locking rod can rotate, the posture of the clamping protrusion can be changed, then the clamping protrusion can enter the lock catch, and the posture can be changed after the clamping protrusion enters the lock catch, so that locking and unlocking are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle door locking mechanisms, in particular to a locking device. Background Art

[0002] In cargo transportation operations, vans are widely used as light land transportation vehicles. When the operator unloads the cargo, he first rotates to open the openable movable compartment door located at the rear or side of the vehicle. A lock tongue is hinged on the movable compartment door, and a locking block is provided on the side of the lock tongue away from the hinged end. After the movable compartment door is opened and close to the compartment by rotation, the operator reaches between the movable compartment door and the compartment and moves the hinged lock tongue by hand to align the locking block with the lock nose provided on the compartment. The lock nose has a hollow inner cavity and a T-shaped hole connecting the inner cavity with the outside. Then, the movable compartment door is rotated further to reduce the distance between the movable compartment door and the compartment, and the locking block extends into the inner cavity of the lock nose through the upper part of the T-shaped hole. Finally, the lock tongue is pressed down so that the locking block can be against the lower part of the T-shaped hole, so that the locking block can play a role in locking the movable compartment door. The inventor found that when using this locking mechanism, the operator needs to hold the movable compartment door with one hand and the lock tongue with the other hand. If the hand holding the movable compartment door accidentally slips out of the hand, the movable compartment door will squeeze the operator's hand holding the lock tongue with the compartment, which poses a safety hazard. There is an urgent need for a locking device that can ensure the safety of the operator's hands when the movable compartment door is close to the compartment for locking. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a locking device which can ensure the safety of the hands of operators when a movable compartment door is close to the compartment for locking.

[0004] In order to solve the above technical problems, the utility model includes a mounting seat and a lock buckle, the mounting seat is provided with a first accommodating cavity, the first accommodating cavity is provided with a first hollow cylindrical limiting sleeve and a second cylindrical limiting sleeve located below the first limiting sleeve, the top of the second limiting sleeve is provided with a second accommodating cavity recessed downward, the bottom of the first limiting sleeve is provided with a plurality of first stoppers arranged at intervals, the outer diameter of the first stoppers gradually decreases from top to bottom, the top of the second limiting sleeve is provided with a plurality of second stoppers arranged at intervals and located between two adjacent first stoppers The locking cam is provided with a locking rod which is located in the second accommodating cavity at the bottom, the locking rod is provided with a compression spring whose bottom end is against the bottom of the second accommodating cavity, the top of the locking rod is provided with a clamping protrusion and a sliding rod which is located above the compression spring and below the clamping protrusion, the first stop block and the two adjacent second stop blocks form a slideway for accommodating the sliding rod and guiding the sliding direction of the sliding rod, the lock buckle is provided with a third accommodating cavity for accommodating the clamping protrusion, and the lock buckle is provided with a through hole connecting the third accommodating cavity with the outside.

[0005] After adopting the above structure, the mounting seat and the lock buckle are respectively installed on the movable compartment door and the compartment. The operator presses the clamping protrusion to move the lock rod downward, and the sliding rod on the lock rod can slide along the slide formed by the first block and the second block. The slide is roughly inclined inverted V-shaped, and a plurality of slides are connected end to end and distributed circumferentially along the first limit sleeve and the second limit sleeve. When the sliding rod slides along the slide, the lock rod rotates, and when the sliding rod slides downward, it abuts against the top of the compression spring and compresses the compression spring downward. When the operator breaks away from the contact with the clamping protrusion, the compressed compression spring resets and rebounds, and the compression spring slides upward along the slide against the sliding rod until the compression spring completes the reset and rebound, and then the posture of the clamping protrusion can change with the rotation of the lock rod, so that the clamping protrusion can align with the through hole on the lock buckle. As the movable compartment door and the compartment continue to approach, the clamping protrusion enters the third accommodating cavity from the through hole. Finally, the operator swings the movable compartment door back and forth to make the engaging protrusion reciprocate with the inner cavity side wall of the side of the lock buckle relative to the through hole, and the sliding rod slides along the slideway for multiple times until the engaging protrusion changes its posture when entering the through hole to be able to abut against the inner side wall of the through hole, thereby completing the locking of the movable compartment door. When the movable compartment door approaches the compartment for locking, the operator does not need to touch the locking rod and the engaging protrusion, but only needs to hold the movable compartment door and swing it back and forth, thereby ensuring the safety of the operator's hands.

[0006] Furthermore, the mounting base includes a first base body and a second base body located below the first base body, the first base body and the second base body are connected by a latch, the first base body is provided with an escape hole for escaping the lock rod, the first limit sleeve is arranged on the first base body, and the second limit sleeve is arranged on the second base body. By providing the first base body, the second base body and the latch, the first base body and the second base body are detachably connected, and the operator can conveniently install and subsequently inspect the first limit sleeve and the second limit sleeve.

[0007] Furthermore, the lock buckle includes a bottom plate and a shell, the bottom plate is provided with a plurality of first mounting holes, and the shell is provided with a plurality of second mounting holes corresponding to the first mounting holes. By providing the first mounting holes and the second mounting holes, the lock buckle can be connected to the vehicle compartment through fasteners, and the lock buckle is made into a split structure through the bottom plate and the shell, so that the operator can conveniently inspect the inside of the lock buckle.

[0008] Furthermore, the outer diameter of the clamping protrusion gradually decreases from bottom to top, and the width of the through hole is adapted to the thickness of the clamping protrusion. By setting the clamping protrusion to have an outer diameter that gradually decreases from bottom to top, the clamping protrusion has a lighter weight, and thus the locking rod, the sliding rod and the clamping protrusion are lightweight as a whole.

[0009] In summary, the utility model has the advantages of convenient use, reasonable structure, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the explosion effect of the utility model;

[0012] Figure 3 is a schematic diagram of the structure of the second limiting sleeve and the second stopper;

[0013] Figure 4 yes Figure 1 Structural diagram of half-section effect;

[0014] Figure 5 It is a schematic diagram of the state changes of the first limiting sleeve, the compression spring, the first stopper, the second limiting sleeve, the second stopper, the locking rod, the clamping protrusion and the sliding rod when the utility model is in use;

[0015] Figure 6 It is a structural schematic diagram of a lock tongue, a locking block and a lock nose in the prior art;

[0016] In the figure: 1. mounting seat; 11. first seat body; 111. avoidance hole; 12. second seat body; 13. latch; 2. lock buckle; 21. bottom plate; 211. first mounting hole; 22. housing; 221. second mounting hole; 3. first limiting sleeve; 4. second limiting sleeve; 41. second accommodating chamber; 411. compression spring; 5. first stop block; 6. second stop block; 7. locking rod; 71. snap-fit ​​protrusion; 72. sliding rod; 8. third accommodating chamber; 81. through hole. DETAILED DESCRIPTION

[0017] Now, the utility model is further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model. For ease of understanding, Figure 1 The left side is the left side of the utility model. Figure 1 The right side is the right side of the utility model. Figure 1 The upper side is the upper side of the utility model, Figure 1 The lower side is the lower side of the present invention. Figure 6 , which shows the structure of a lock tongue, a locking block and a lock nose in the prior art. The locking block is integrally formed on the lock tongue, and the lock nose is a box-shaped structure with a hollow inner cavity and a T-shaped hole.

[0018] Reference Figures 1 to 5The utility model includes a mounting seat 1 and a lock 2. The mounting seat 1 is provided with a first accommodating cavity. The mounting seat 1 includes a first seat body 11 and a second seat body 12 located below the first seat body 11. The first seat body 11 and the second seat body 12 are connected by a latch 13. The latch 13 can detachably connect the first seat body 11 and the second seat body 12 through interference fit. The lock 2 includes a bottom plate 21 and a shell 22. The bottom plate 21 is provided with a plurality of first mounting holes 211. The shell 22 is provided with a plurality of second mounting holes 221 corresponding to the first mounting holes 211. The first accommodating cavity is provided with a first limiting sleeve 3 in a hollow cylindrical shape and a second limiting sleeve 4 in a cylindrical shape located below the first limiting sleeve 3. The first limiting sleeve 3 is arranged on the first seat body 11, and the second limiting sleeve 4 is arranged on the second seat body 12. The first seat body 11, the second seat body 12, the first limiting sleeve 3 and the second limiting sleeve 4 can be made of metal materials, which have good structural properties on the one hand, and can be connected to the first seat body 11 and the second limiting sleeve 4 on the second seat body 12 by welding on the other hand. The top of the second limiting sleeve 4 is provided with a second accommodating cavity 41 recessed downward, and the bottom of the first limiting sleeve 3 is provided with a plurality of first stoppers 5 arranged at intervals, and the outer diameter of the first stoppers 5 gradually decreases from top to bottom. The top of the second limiting sleeve 4 is provided with a plurality of second stoppers 6 arranged at intervals and located between two adjacent first stoppers 5, and the outer diameter of the second stoppers 6 gradually decreases from bottom to top. In this embodiment, the first stoppers 5 and the second stoppers 6 are roughly triangular.

[0019] Reference Figures 1 to 5 The mounting seat 1 is slidably connected with a lock rod 7 located at the lower part in the second accommodating cavity 41. The first seat body 11 is provided with an avoidance hole 111 for avoiding the lock rod 7. The lock rod 7 is penetrated by a compression spring 411 whose bottom end is against the bottom of the second accommodating cavity 41. The top of the lock rod 7 is provided with a clamping protrusion 71 and a sliding rod 72 located above the compression spring 411 and below the clamping protrusion 71. The outer diameter of the clamping protrusion 71 gradually decreases from bottom to top, and the width of the through hole 81 is adapted to the thickness of the clamping protrusion 71. Figure 1 , the width of the through hole 81 is the distance from its left side to its right side. Figure 4 The thickness of the clamping protrusion 71 is the distance from its left side to its right side. The first stopper 5 and the two adjacent second stoppers 6 form a slideway for accommodating the sliding rod 72 and guiding the sliding direction of the sliding rod 72. The lock buckle 2 is provided with a third accommodating cavity 8 for accommodating the clamping protrusion 71, and the lock buckle 2 is provided with a through hole 81 connecting the third accommodating cavity 8 with the outside.

[0020] When the utility model is used, the mounting seat 1 and the lock buckle 2 are respectively installed on the movable door and the carriage. Of course, the utility model can also be used on the movable doors and bodies of other vehicles. The operator presses the engaging protrusion 71 to move the lock rod 7 downward, and the sliding rod 72 on the lock rod 7 can slide along the slide formed by the first stop block 5 and the second stop block 6. The slide is roughly in an inclined inverted V shape, and several slides are connected end to end and distributed circumferentially along the first limit sleeve 3 and the second limit sleeve 4. When the sliding rod 72 slides along the slide, the lock rod 7 rotates, and when the sliding rod 72 slides downward, it abuts against the top of the compression spring 411 and compresses the compression spring 411 downward. When the operator breaks away from the contact with the engaging protrusion 71, the compressed compression spring 411 returns to its original position and rebounds, and the compression spring 411 pushes the sliding rod 72 upward along the slideway until the compression spring 411 completes the return and rebound, and then the posture of the engaging protrusion 71 can change with the rotation of the lock rod 7, so that the engaging protrusion 71 can align with the through hole 81 on the lock buckle 2. As the movable compartment door and the compartment continue to approach each other, the engaging protrusion 71 enters the third accommodating chamber 8 from the through hole 81. Finally, the operator swings the movable compartment door back and forth to make the engaging protrusion 71 reciprocate with the inner cavity side wall of the lock buckle 2 on one side of the through hole 81, and the sliding rod 72 slides along the slideway for multiple times until the engaging protrusion 71 changes its posture when entering the through hole 81 to be able to abut against the inner side wall of the through hole 81, thereby completing the locking of the movable compartment door. When unlocking is required, the operator swings the movable compartment door back and forth to make the engaging protrusion 71 reciprocate in contact with the inner cavity side wall of the lock buckle 2 on one side relative to the through hole 81, and the sliding rod 72 slides along the slide track multiple times, and the posture of the engaging protrusion 71 changes until it can move outward from the through hole 81. Finally, the operator turns the movable compartment door to move it away from the compartment.

[0021] The utility model provides a locking device. When the movable compartment door is close to the compartment for locking, the operator does not need to touch the locking rod and the clamping protrusion, but only needs to hold the movable compartment door and swing it back and forth, thereby ensuring the safety of the operator's hands. By providing a first seat body, a second seat body and a latch, the first seat body and the second seat body are detachably connected, and the operator can conveniently install and subsequently inspect the first limit sleeve and the second limit sleeve. By providing a first mounting hole and a second mounting hole, the lock buckle can be connected to the compartment through a fastener, and the lock buckle is made into a split structure through a bottom plate and an outer shell, and the operator can conveniently inspect the inside of the lock buckle. By setting the clamping protrusion to a shape in which the outer diameter gradually decreases from bottom to top, the clamping protrusion has a lighter self-weight, and then the locking rod, the sliding rod and the clamping protrusion are lightweight as a whole. In summary, the utility model has the advantages of convenient use and reasonable structure.

[0022] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims of this patent, they should all fall within the protection scope of the utility model.

Claims

1. A locking device, characterized in that: The invention comprises a mounting seat (1) and a lock buckle (2), wherein the mounting seat (1) is provided with a first accommodating cavity, wherein a first hollow cylindrical limiting sleeve (3) and a second cylindrical limiting sleeve (4) located below the first limiting sleeve (3) are provided in the first accommodating cavity, wherein a second accommodating cavity (41) recessed downward is provided at the top of the second limiting sleeve (4), wherein a plurality of first stoppers (5) arranged at intervals are provided at the bottom of the first limiting sleeve (3), wherein the outer diameter of the first stoppers (5) gradually decreases from top to bottom, wherein a plurality of second stoppers (6) arranged at intervals and located between two adjacent first stoppers (5) are provided at the top of the second limiting sleeve (4), wherein the outer diameter of the second stoppers (6) gradually decreases from bottom to top, wherein the mounting seat (1) is provided with a first accommodating cavity (41) recessed downwardly at the top of the second limiting sleeve (4), wherein the second stoppers (6) are provided with a first stoppers (5) arranged at intervals and located between two adjacent first stoppers (5), wherein the outer diameter of the second stoppers (6) gradually decreases from bottom to top, wherein the mounting seat (1) is provided with a first accommodating cavity (41) recessed downwardly at the top of the second limiting sleeve (4), wherein the second stoppers (6) are provided with a first stoppers (5) disposed ... The mounting seat (1) is slidably connected with a locking rod (7) whose lower portion is located in the second accommodating cavity (41); the locking rod (7) is penetrated by a compression spring (411) whose lower end abuts against the bottom of the second accommodating cavity (41); the top of the locking rod (7) is provided with a clamping protrusion (71) and a sliding rod (72) located above the compression spring (411) and below the clamping protrusion (71); the first stopper (5) and two adjacent second stoppers (6) form a slideway for accommodating the sliding rod (72) and guiding the sliding direction of the sliding rod (72); the lock buckle (2) is provided with a third accommodating cavity (8) for accommodating the clamping protrusion (71); and the lock buckle (2) is provided with a through hole (81) connecting the third accommodating cavity (8) with the outside.

2. The locking device according to claim 1, characterized in that: The mounting seat (1) comprises a first seat body (11) and a second seat body (12) located below the first seat body (11); the first seat body (11) and the second seat body (12) are connected via a latch (13); the first seat body (11) is provided with an avoidance hole (111) for avoiding a locking rod (7); the first limiting sleeve (3) is provided on the first seat body (11); and the second limiting sleeve (4) is provided on the second seat body (12).

3. The locking device according to claim 1, characterized in that: The lock buckle (2) comprises a bottom plate (21) and a shell (22); the bottom plate (21) is provided with a plurality of first mounting holes (211); and the shell (22) is provided with a plurality of second mounting holes (221) corresponding to the first mounting holes (211).

4. The locking device according to claim 1, characterized in that: The outer diameter of the clamping protrusion (71) gradually decreases from bottom to top, and the width of the through hole (81) is adapted to the thickness of the clamping protrusion (71).

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