Trailer lock

Abstract

The utility model relates to the field of trailer locks, in particular to a trailer lock which comprises a lock body, a lock rod is fixedly mounted outside the lock body, a fixed knob penetrates through the outside of the lock rod, an extension rod is movably connected into the lock rod, and an arc-shaped lock head is fixedly connected to one end of the extension rod. Due to the arrangement of the first lock cylinder, the butt joint groove, the lock head, the lock head groove, the damping reset rod, the driving pin, the key pin and the second lock cylinder, when a key is inserted into the second lock cylinder, the damping reset rod is pressed by the key pin to drive the driving pin to stretch out and draw back to completely enter the lock head groove according to the fact that the key abuts against the key pin due to unevenness on the key; when the trailer lock is unlocked, the second lock cylinder is twisted by a half circle to enable the butt joint block to abut against the butt joint groove of the first lock cylinder, then the first lock cylinder is driven to rotate by a half circle for the second time to complete the unlocking function of the arc-shaped lock head, in this way, double locking is formed by the first lock cylinder and the second lock cylinder in the front end lock head, and the anti-theft capacity of the trailer lock is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of trailer lock, concretely relates to a trailer lock. BACKGROUND

[0002] The trailer lock is mainly composed of a lock body, a lock core, a key and the like, the lock body is a key part of the lock, it is fixed together with the trailer, guarantees the safety of the trailer, the lock core is a core component for controlling the opening and closing of the lock, and the key is a tool for operating the lock core, the trailer lock has the following advantages: firstly, it can quickly lock and unlock the trailer, is convenient to use, secondly, it has high safety and reliability, can effectively protect the trailer and goods, and finally, the installation of the trailer twist lock is simple and convenient, and can be completed by a professional.

[0003] Through the retrieval, the disclosed No. CN216331259U firm trailer lock, specifically discloses a firm trailer lock, including fixed pipe, the outer side of fixed pipe is installed ring frame, a plurality of rotating rods are rotatably installed on the side away from the ring frame of the fixed pipe, a threaded rod is slidably installed in the fixed pipe, the threaded rod outer end is installed for the limiting disc for limiting the rotating rod; the end away from the rotating rod of the fixed pipe is rotatably installed with a rotating sleeve, the inside of the rotating sleeve is installed with a nut, the nut is in threaded cooperation with the threaded rod, the outer side of the fixed pipe is installed with a fixed box, the inside of the fixed box is installed with a lock body for locking and fixing the rotating sleeve, and the beneficial effect lies in that: the rotating rod is compressed by the limiting disc, the trailer hole can be compressed by the ring frame and the rotating rod, the rotating sleeve is locked and fixed by the lock body, and the fixing effect is good.

[0004] The above patent only realizes the compression of the rotating rod by the limiting disc through the fixed pipe, the limiting disc, the rotating rod and the ring frame, the compression of the trailer hole by the ring frame and the rotating rod, the locking and fixing of the rotating sleeve by the lock body, and the good fixing effect, but the trailer lock only relies on the locking of the lock head and the lock body during use, so that the anti-theft capability of the trailer lock cannot be improved, the trailer lock cannot be locked and used for anti-theft until the vehicle owner or safety personnel come, and the theft event occurs, so that the trailer lock is inconvenient for locking and anti-theft use of the vehicle.

[0005] Therefore, it is necessary to invent a trailer lock to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a trailer lock, through first lock core, front end lock head, damping reset rod, drive pin, key pin and second lock core realize that the inside of front end lock head formed double locking, strengthened the anti -theft ability of this trailer lock, compared to one heavy locking this trailer lock strengthened the use time effect, the anti -theft ability of enhancement also makes this trailer lock when facing theft behavior persist for a longer time, the security personnel and the owner come in time to reduce the stolen risk, the effect of the long -term use of the device is convenient, to solve the trailer lock in the prior art in the use process, only rely on the heavy locking of lock head and lock body can not fully improve the anti -theft ability of this trailer lock, and the trailer lock does not persist to the owner or security personnel will cause the occurrence of theft, lead to the trailer lock not convenient for locking the vehicle and preventing theft use problem.

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a trailer lock, including the lock body, the outside fixed mounting of lock body has the lock rod, the outside of lock rod is penetrated and has the fixed knob, the inside movable connection of lock rod has the extension rod, one end of extension rod is fixedly connected with the arc lock head, the outside of arc lock head is equipped with the self -locking groove, the outside of arc lock head is provided with first lock core, the one side of first lock core is equipped with the butt joint groove, one end of arc lock head is provided with front end lock head, the inside of front end lock head is equipped with the lock head groove, the inside fixed mounting of lock head groove has the damping reset rod, one end of damping reset rod is fixedly connected with drive pin, the other end of drive pin is provided with key pin, the outside of key pin is provided with second lock core, one end of second lock core is fixedly installed and has the butt joint block.

[0008] Preferably, the arc-shaped lock head is movably connected with the lock body through the extension rod, and the center line of the extension rod coincides with the center line of the lock rod.

[0009] Preferably, the number of damping reset rods is five, and the five damping reset rods are distributed at equal intervals in the front end lock head.

[0010] Preferably, the key pin is movably connected with the drive pin, and the drive pin is in a cylindrical shape.

[0011] Preferably, the front end lock head is provided with a sliding groove, the sliding groove is movably connected with a sliding block, and the sliding block is fixedly provided with a lock head cover.

[0012] Preferably, the lock head cover is slidably connected with the front end lock head through the sliding block and the sliding groove.

[0013] In the above technical scheme, the utility model provides the technical effect and advantage:

[0014] 1. Through the setting of the first lock cylinder, the butt joint groove, the front end lock head, the lock head groove, the damping reset rod, the driving pin, the key pin and the second lock cylinder, firstly when the key is inserted into the second lock cylinder, the uneven on the key rubs against the key pin, the damping reset rod is pressed by the key pin, the driving pin is driven to extend and retract and enters the lock head groove, then the butt joint block rubs against the butt joint groove of the first lock cylinder, the first lock cylinder is driven to rotate again by half a circle to complete the unlocking function of the arc-shaped lock head, so that the first lock cylinder and the second lock cylinder form double locking inside the front end lock head, the anti-theft ability of the trailer lock is strengthened, compared with one-time locking, the trailer lock is more convenient to use, the enhanced anti-theft ability also makes the trailer lock persist for a longer time when facing theft behavior, which is convenient for security personnel and the owner to arrive in time to reduce the risk of theft, and the device is convenient for long-term use;

[0015] 2. Through the setting of the lock body, the lock rod, the fixed knob, the extension rod, the front end lock head, the sliding groove, the sliding block and the lock head cover, when the trailer lock is used for connecting and preventing theft of the vehicle, since the distance between the vehicles is different, the fixed knob can be twisted to freely adjust the length of the lock rod and the extension rod, so that the trailer lock can meet the connection and locking of vehicles at different distances, and the sliding groove and the sliding block are simple in structure, and the lock head cover protects the lock eye in the front end lock head when not in use, thereby reducing the risk of the lock eye being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2 It is a schematic diagram of the lock rod structure of the present application.

[0019] Figure 3 It is a schematic diagram of the first lock cylinder structure of the present application.

[0020] Figure 4 It is a schematic diagram of the key pin structure of the present application.

[0021] Figure 5 It is a schematic diagram of the lock head cover structure of the present application.

[0022] Explanation of reference signs:

[0023] 1. Lock body; 2. Lock rod; 3. Fixed knob; 4. Extension rod; 5. Arc-shaped lock head; 6. Self-locking groove; 7. First lock cylinder; 8. Connecting groove; 9. Front lock head; 10. Lock head groove; 11. Damping reset rod; 12. Drive pin; 13. Key pin; 14. Second lock cylinder; 15. Connecting block; 16. Sliding groove; 17. Sliding block; 18. Lock head cover. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figures 1-5 The trailer lock shown includes a lock body 1, a lock rod 2 fixedly mounted on the outside of the lock body 1, a fixed knob 3 passing through the outside of the lock rod 2, an extension rod 4 movably connected inside the lock rod 2, an arc-shaped lock head 5 fixedly connected to one end of the extension rod 4, a self-locking groove 6 formed on the outside of the arc-shaped lock head 5, a first lock cylinder 7 provided on the outside of the arc-shaped lock head 5, a mating groove 8 formed on one side of the first lock cylinder 7, a front lock head 9 provided at one end of the arc-shaped lock head 5, a lock head groove 10 formed inside the front lock head 9, a damping reset rod 11 fixedly mounted inside the lock head groove 10, a drive pin 12 fixedly connected to one end of the damping reset rod 11, and the drive pin 12... The other end is provided with a key pin 13, and a second lock cylinder 14 is provided on the outside of the key pin 13. A docking block 15 is fixedly installed on one end of the second lock cylinder 14. When the key is inserted into the second lock cylinder 14, the key's uneven surface abuts against the key pin 13. The damping reset rod 11 is pressed by the key pin 13, which drives the drive pin 12 to extend and retract until it is fully inserted into the lock head groove 10. The second lock cylinder 14 is then twisted half a turn so that the docking block 15 abuts against the docking groove 8 of the first lock cylinder 7. The first lock cylinder 7 is then rotated half a turn a second time to complete the unlocking function of the arc-shaped lock head 5. In this way, the first lock cylinder 7 and the second lock cylinder 14 form a double lock inside the front lock head 9.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the arc-shaped lock head 5 is movably connected to the lock body 1 via the extension rod 4. The center line of the extension rod 4 coincides with the center line of the lock rod 2. By turning the fixing knob 3, the length of the lock rod 2 and the extension rod 4 can be freely adjusted so that the trailer lock can meet the vehicle connection and locking work at different distances. The number of damping reset rods 11 is set to five. The five damping reset rods 11 are evenly distributed in the front lock head 9. The five sets of damping reset rods 11 of different lengths enhance the anti-theft capability of the second lock cylinder 14.

[0027] like Figure 1 , Figure 4 and Figure 5As shown, the key pin 13 is movably connected with the driving pin 12, the driving pin 12 is provided in a cylindrical shape, the key pin 13 is matched with the driving pin 12 and abuts against the lock head groove 10, the second lock core 14 is conveniently rotated by a person who opens the lock, the outer portion of the front end lock head 9 is provided with a sliding groove 16, the sliding groove 16 is movably connected with a sliding block 17, one end of the sliding block 17 is fixedly provided with a lock head cover 18, the sliding lock head cover 18 plays a protection role on the lock hole in the front end lock head 9 when not in use, reduces the risk of the lock hole being blocked, the lock head cover 18 is slidably connected with the front end lock head 9 through the sliding block 17, the sliding block 17 is used in cooperation with the sliding groove 16, the sliding groove 16 and the sliding block 17 are simple in structure and convenient and fast in opening or closing the lock head cover 18, and the maintenance difficulty when a fault occurs is also reduced.

[0028] The utility model works as follows: firstly, before using the trailer lock, the length of the lock rod 2 and the extension rod 4 is adjusted freely according to the distance of the current vehicle, so that the trailer lock can meet the vehicle connection locking work under different distances, then the front end lock head 9 is connected with the arc-shaped lock head 5 to complete the locking work of the vehicle, after the vehicle connection locking is completed, the sliding groove 16 and the sliding block 17 are used to slide the lock head cover 18 to shield the lock hole in the front end lock head 9, reducing the risk of the lock hole being blocked, when the connected vehicle encounters a theft event in the outside world, the key is inserted into the second lock core 14, the uneven surface on the key abuts against the key pin 13, if a non-matching key presses the damping reset rod 11, the driving pin 12 cannot be driven to extend into the lock head groove 10, thus forming a primary locking, then after the primary locking is completed, the abutting block 15 of the second lock core 14 is misaligned with the abutting groove 8 of the first lock core 7, the second lock core 14 needs to be unlocked, the abutting block 15 is abutted against the abutting groove 8 of the first lock core 7 by rotating the second lock core 14 by half a circle, and the first lock core 7 is driven to rotate by half a circle again to complete the unlocking function of the arc-shaped lock head 5, thus completing the secondary locking, the double locking enhances the anti-theft ability of the trailer lock, compared with the primary locking, the trailer lock enhances the service life during use, the enhanced anti-theft ability also makes the trailer lock last longer when facing theft behavior, and the security personnel and the vehicle owner can arrive in time to reduce the risk of theft, finally, after the above operation is completed, the trailer lock is used and the anti-theft use is completed, and the trailer lock is maintained daily, thus the use process of the trailer lock is completed.

[0029] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various different ways without deviating from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A trailer lock comprising a lock body (1), characterized in that: The outer part of the lock body (1) is fixedly provided with a lock rod (2), the outer part of the lock rod (2) is penetrated through a fixed knob (3), the inner part of the lock rod (2) is movably connected with an extension rod (4), one end of the extension rod (4) is fixedly connected with an arc-shaped lock head (5), the outer part of the arc-shaped lock head (5) is provided with a self-locking groove (6), the outer part of the arc-shaped lock head (5) is provided with a first lock cylinder (7), one side of the first lock cylinder (7) is provided with a butt joint groove (8), one end of the arc-shaped lock head (5) is provided with a front-end lock head (9), the inner part of the front-end lock head (9) is provided with a lock head groove (10), the inner part of the lock head groove (10) is fixedly provided with a damping reset rod (11), one end of the damping reset rod (11) is fixedly connected with a driving pin (12), the other end of the driving pin (12) is provided with a key pin (13), the outer part of the key pin (13) is provided with a second lock cylinder (14), one end of the second lock cylinder (14) is fixedly provided with a butt joint block (15).

2. A trailer lock according to claim 1, wherein: The arc-shaped lock head (5) is movably connected with the lock body (1) through the extension rod (4), and the center line of the extension rod (4) is coincided with the center line of the lock rod (2).

3. A trailer lock as claimed in claim 1, wherein: The number of the damping reset rods (11) is five, and the five damping reset rods (11) are equidistantly distributed in the front-end lock head (9).

4. A trailer lock as claimed in claim 1, wherein: The key pin (13) is movably connected with the driving pin (12), and the driving pin (12) is in a cylindrical shape.

5. A trailer lock as defined in claim 1, wherein: The outer part of the front-end lock head (9) is provided with a sliding groove (16), the inner part of the sliding groove (16) is movably connected with a sliding block (17), and one end of the sliding block (17) is fixedly provided with a lock head cover (18).

6. A trailer lock according to claim 5, wherein: The lock head cover (18) is slidably connected with the front-end lock head (9) through the sliding block (17), and the sliding block (17) is used in cooperation with the sliding groove (16).

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