A trailer coupler lock
By designing a trailer coupler lock that adapts to different sizes and types of couplers, and combining it with a lock cylinder cover and limiting components, the problems of insufficient adaptability and anti-theft security in existing technologies are solved, achieving higher adaptability and anti-theft effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN YUNSHI TECHNOLOGY CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
Existing trailer coupler locks have limited compatibility and poor anti-theft security, failing to effectively prevent trailers from being towed by others.
A trailer coupler lock is designed, including a lock cylinder frame, a movable lock head, a limiting member, and a lock cylinder cover. The lock cylinder frame and lock head are movably connected to accommodate couplers of different sizes and types, and the lock cylinder cover and limiting member protect the connection structure from external damage and external operation.
It improves the compatibility and anti-theft security of trailer coupler locks, ensures connection stability and prevents external damage, and enhances anti-theft performance.
Smart Images
Figure CN224528365U_ABST
Abstract
Description
Technical Field
[0001] This application relates to locks, and more particularly to a trailer coupler lock. Background Technology
[0002] With the rapid development of the automotive industry, trailers are being used in increasingly diverse scenarios. Trailers themselves have no power and require a vehicle to tow them. Typically, a tow ball is located at the rear of the vehicle, and a coupler corresponding to the tow ball is located at the front of the trailer.
[0003] A coupler lock is a type of lock used to lock the coupler at the front of a trailer. By locking the coupler on a non-powered trailer, it prevents other towing vehicles from coupling and towing, thus preventing the towing or misappropriation of property such as RVs. Existing coupler locks have limited coupler compatibility and poor anti-theft security, requiring urgent improvement. Utility Model Content
[0004] This application provides a trailer coupler lock, which has the advantages of good adaptability and high anti-theft security.
[0005] The first aspect of this application provides a trailer coupler lock, including: A lock cylinder frame has a connector head that engages with the ball cavity of the coupler and a first locking tongue. A sliding groove extends along a first direction on the lock cylinder frame. A movable lock head includes a slider and a connecting portion. The slider is slidably mounted within the sliding groove, and the connecting portion is connected to the slider. The connecting portion engages with at least one surface of the coupler, and the connecting portion cooperates with the connector head to clamp and fix the coupler. A limiting member is selectively connected to both the lock cylinder frame and the slider simultaneously to limit the position of the slider within the sliding groove. A lock cylinder cover is selectively provided on the outside of the lock cylinder frame, and a clearance hole is provided on the lock cylinder cover. A locking member is disposed on the periphery of the lock cylinder cover. When the lock cylinder cover is located on the outside of the lock cylinder frame, the first locking tongue passes through the clearance hole and connects to the locking member to lock the lock cylinder frame inside the lock cylinder cover.
[0006] A second aspect of this application provides a trailer coupler lock, comprising: A lock cylinder frame has a joint and a first latch, the joint engaging with at least one surface of the coupler, and a sliding groove extending along a first direction on the lock cylinder frame; a movable lock head includes a connector and a slider; the slider is slidably mounted in the sliding groove, the connector is connected to the slider, the connector engages with the ball cavity of the coupler, and the joint and the connector cooperate to clamp and fix the coupler; a limiting member is selectively connected to both the lock cylinder frame and the slider simultaneously to limit the position of the slider in the sliding groove; a lock cylinder cover is selectively provided on the outside of the lock cylinder frame, and the lock cylinder cover has a clearance hole; and a locking member is provided on the periphery of the lock cylinder cover; when the lock cylinder cover is provided on the outside of the lock cylinder frame, the first latch passes through the clearance hole and connects with the locking member to lock the lock cylinder frame inside the lock cylinder cover.
[0007] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. The lock cylinder frame and the movable lock head are movably connected, which can change the relative position of the lock cylinder frame and the movable lock head to allow for connection of couplers of different sizes and types, thereby improving the compatibility of trailer coupler locks.
[0008] 2. The lock cylinder cover can protect the inner lock cylinder frame, movable lock head and the joint of the coupler, preventing external forces from directly damaging the connection structure and improving anti-theft security; at the same time, the lock cylinder cover also includes the limiting component inside, preventing external contact or operation of the limiting component from causing relative movement of the lock cylinder frame and movable lock head, ensuring the connection stability of the coupler. Attached Figure Description
[0009] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a schematic diagram of the coupler structure; Figure 2 This is a schematic diagram of the coupler from another perspective. Figure 3 This is a schematic diagram of the structure of the coupler connecting to the trailer coupler lock in one embodiment of this application; Figure 4 This is a schematic diagram of the structure of the coupler connecting the trailer coupler lock in one embodiment of this application from another perspective; Figure 5 for Figure 4 A cross-sectional view along the AA direction; Figure 6 This is a schematic diagram of the structure of a trailer coupler lock according to an embodiment of this application; Figure 7This is an exploded view of the structure of a trailer coupler lock according to an embodiment of this application; Figure 8 This is a schematic diagram of the lock cylinder frame and movable lock head in one embodiment of this application; Figure 9 This is a schematic diagram of the lock cylinder frame and movable lock head in one embodiment of this application; Figure 10 for Figure 8 Cross-sectional view along the BB direction; Figure 11 This is a schematic diagram of the lock cylinder frame and movable lock head in one embodiment of this application; Figure 12 for Figure 10 A cross-sectional view along the CC direction; Figure 13 This is an exploded view of the structure of the lock cylinder frame and the movable lock head in one embodiment of this application; Figure 14 This is an exploded view of the lock cylinder frame and movable lock head from another perspective in one embodiment of this application; Figure 15 This is a schematic diagram of the structure of the lock cylinder cover and the locking member in one embodiment of this application; Figure 16 This is a structural schematic diagram of the lock cylinder cover and locking member from another perspective in one embodiment of this application; Figure 17 This is an exploded view of the structure of a trailer coupler lock in one embodiment of this application; Figure 18 This is a schematic diagram of the lock cylinder frame and movable lock head in one embodiment of this application; Figure 19 This is a schematic diagram of the lock cylinder frame and movable lock head in one embodiment of this application; Figure 20 for Figure 18 Cross-sectional view along the DD direction; Figure 21 This is an exploded view of the structure of the lock cylinder frame and the movable lock head in one embodiment of this application; Figure 22 This is an exploded view of the lock cylinder frame and movable lock head from another perspective in one embodiment of this application.
[0010] Explanation of reference numerals in the attached drawings: 100, lock cylinder frame; 110, first lock tongue; 120, sliding groove; 121, second end; 130, limiting plate; 140, second panel; 200, movable lock head; 210, slider; 300, limiting component; 310, positioning hole; 320, pin hole; 321, first pin hole; 322, second pin hole; 330, limiting pin; 331, pin post; 332, pin handle; 340, receiving groove; 341, first receiving groove; 342, second receiving groove; 350, first end face; 360, limiting groove; 370, limiting hole; 380, limiting set screw; 381, limiting end; 400, lock cylinder. Cover; 410, clearance hole; 420, first inner wall; 430, second inner wall; 440, leveling groove; 450, second locking tongue; 460, mounting groove; 470, wrench groove; 500, locking element; 510, locking groove; 600, coupler; 610, ball cavity; 620, flange; 630, locking wrench; 700, joint; 710, retaining groove; 800, connector; x, first direction; y, second direction. Detailed Implementation
[0011] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0012] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," "set," and "joined" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0013] The accompanying drawings illustrate one or more examples of the present invention. The detailed description uses numerals and letters to refer to features in the drawings. Similar or analogous reference numerals in the drawings and description have been used to refer to similar or analogous parts of the present invention. As used herein, the terms “first,” “second,” and “third,” etc., are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of individual components.
[0014] According to an embodiment of the present invention, a trailer coupler lock is provided, comprising: a lock cylinder frame 100, a movable lock head 200, a limiting member 300, a lock cylinder cover 400, and a locking member 500.
[0015] like Figure 1-5 As shown, a trailer coupler lock is used to restrict access to the trailer coupler 600 or other structures designed to engage a ball joint. The coupler 600 typically includes a ball cavity 610 for receiving the ball joint. The ball cavity 610 is typically positioned near one end of the coupler 600 such that a housing is located between the ball cavity 610 and the outer surface of the coupler 600. In this embodiment, the coupler 600 may also include a flange 620 and a locking wrench 630. The flange 620 extends along the outer periphery of the coupler 600; the locking wrench 630 is disposed outside the ball cavity 610 for locking the ball joint within the ball cavity 610. Clearly, the coupler 600 can be manufactured in various sizes and designs. Figure 1-2 The coupler 600 shown is merely exemplary.
[0016] like Figure 6-9 As shown in Figures 15 and 16, the lock cylinder frame 100 and the movable lock head 200 are the parts of the trailer coupler lock that engage with the coupler 600. The lock cylinder frame 100 and the movable lock head 200 cooperate to achieve a good connection with the coupler 600. The lock cylinder frame 100 and the movable lock head 200 are movably connected, allowing the relative positions of the lock cylinder frame 100 and the movable lock head 200 to be changed to connect with couplers 600 of different sizes and types, thereby improving the adaptability of the trailer coupler lock.
[0017] In one embodiment, a limiting member 300 is disposed between the lock cylinder frame 100 and the movable lock head 200. When the coupler 600 is connected to the lock cylinder frame 100 and the movable lock head 200, the relative positions of the lock cylinder frame 100 and the movable lock head 200 are first adjusted so that the engaging part of the coupler 600 can easily snap into the space between the lock cylinder frame 100 and the movable lock head 200. Then, by readjusting the relative positions of the lock cylinder frame 100 and the movable lock head 200, the gap between the lock cylinder frame 100 and the movable lock head 200 is gradually reduced until the coupler 600 is snapped into place. Finally, the limiting member 300 is connected to the lock cylinder frame 100 and the movable lock head 200, restricting the lock cylinder frame 100 and the movable lock head 200 to their adjusted relative positions, thereby ensuring the stability of the coupler 600 when engaged with the lock cylinder frame 100 and the movable lock head 200.
[0018] After connecting the coupler 600 between the lock cylinder frame 100 and the movable lock head 200, and limiting the relative position of the lock cylinder frame 100 and the movable lock head 200 by the limiting member 300, the lock cylinder cover 400 can be placed on the outside of the lock cylinder frame 100, and the first lock tongue 110 can pass through the clearance hole 410 on the lock cylinder cover 400. The locking element is located around the lock cylinder cover. The locking element 500 can be connected to the first bolt 110 extending from the clearance hole 410 to lock the lock cylinder frame 100 inside the lock cylinder cover 400. This allows the lock cylinder cover 400 to protect the lock cylinder frame 100, the movable lock head 200, the limiting element 300, and the joint of the coupler 600 on the inner side, thereby preventing external forces from directly damaging the connection structure and improving anti-theft security. At the same time, the limiting element 300 is housed inside the lock cylinder cover 400, which can prevent external contact or operation of the limiting element 300 from causing relative movement between the lock cylinder frame 100 and the movable lock head 200, ensuring the connection stability of the coupler 600.
[0019] In one embodiment, such as Figure 8-10 As shown, the lock cylinder frame 100 includes a connector 800 and a sliding groove 120. The movable lock head 200 includes a slider 210 and a connecting portion 700. The sliding groove 120 extends along a first direction x, and the slider 210 is slidably mounted within the sliding groove 120 to achieve a movable connection between the lock cylinder frame 100 and the movable lock head 200. The connector 800 can engage with the ball cavity 610 of the coupler 600, and the connecting portion 700 can engage with at least one surface of the coupler 600. The connecting portion 700 is connected to the slider 210, and the slider 210 slides along the sliding groove 120 to drive the connecting portion 700 to move, allowing the relative position of the connecting portion 700 and the connector 800 to be adjusted to accommodate couplers 600 of different sizes and types.
[0020] When connecting the coupler 600, first engage the ball cavity 610 of the coupler 600 with the connector 800 on the lock cylinder frame 100; then, the slider 210 slides along the sliding groove 120 to drive the joint 700 to move, so that the outer surface of the coupler 600 engages with the joint 700 on the movable lock head 200; at this time, the joint 700 and the connector 800 work together to clamp and fix the coupler 600 between the lock cylinder frame 100 and the movable lock head 200, achieving a good connection effect.
[0021] The limiting member 300 is disposed between the sliding groove 120 and the slider 210 to restrict the relative sliding between the slider 210 and the sliding groove 120 after the coupler 600 is connected, so as to ensure the stability of the relative position of the joint 700 and the connector 800, so as to stably engage and clamp the coupler 600 and improve the connection stability of the coupler 600.
[0022] In one embodiment, such as Figure 10-11 As shown, the slider 210 has multiple positioning holes 310 arranged along the first direction x, and the inner wall of the sliding groove 120 has a pin hole 320. The limiting member 300 includes a limiting pin 330. The limiting pin 330 can pass through the pin hole 320 and be selectively inserted into any positioning hole 310 to limit the relative sliding of the slider 210 and the sliding groove 120, so that the relative position between the movable lock head 200 and the lock cylinder frame 100 remains stable, ensuring the connection stability of the coupler 600.
[0023] In one embodiment, such as Figure 13-14 As shown, multiple positioning holes 310 penetrate the slider 210 along the second direction y. The pin hole 320 includes a first pin hole 321 and a second pin hole 322. The limiting pin 330 passes through the first pin hole 321, the positioning hole 310, and the second pin hole 322 in sequence, or passes through the second pin hole 322, the positioning hole 310, and the first pin hole 321 in sequence, to limit the relative sliding of the slider 210 and the sliding groove 120. Since the limiting pin 330 completely passes through the positioning hole 310, the effective area between the limiting pin 330 and the positioning hole 310 is large; at the same time, the first pin hole 321 and the second pin hole 322 are located on both sides of the positioning hole 310, and can work together on the limiting pin 330; therefore, the limiting pin 330 has a stronger limiting load-bearing capacity, avoiding the coupling 600 from loosening due to violent pulling, and improving the anti-theft security of the trailer coupling lock.
[0024] In one embodiment, the second direction y is perpendicular to the first direction x on the horizontal plane. When the limiting pin 330 is inserted into the positioning hole 310, the limiting pin 330 will be perpendicular to the sliding direction of the slider 210. Pushing or pulling the movable lock head 200 or the lock cylinder frame 100 along the sliding direction will not affect the insertion state of the limiting pin 330, so that the limiting pin 330 has good stability and achieves a better limiting effect.
[0025] In one embodiment, the limiting pin 330 includes a pin post 331 and a pin handle 332. The pin handle 332 is connected to one end of the pin post 331 and is held by the user to operate the limiting pin 330. The limiting pin 330 can be operated without tools to achieve insertion and release of the pin post 331, making it simpler and more convenient to use. The lock cylinder frame 100 is provided with a receiving groove 340, and the pin hole 320 is located within the receiving groove 340. When the pin post 331 is inserted from the pin hole 320 into the positioning hole 310, the pin handle 332 connected to one end of the pin post 331 is received in the receiving groove 340. The receiving groove 340 not only protects the pin handle 332 but also provides a limiting and bearing function for the pin handle 332, improving the stability of the limiting pin 330.
[0026] In one embodiment, such as Figure 11 , 12 As shown, the receiving groove 340 is provided in two sets, including a first receiving groove 341 located outside the first pin hole 321, and a second receiving groove 342 located outside the second pin hole 322. The limiting pin 330 can be inserted from the first pin hole 321, so that the pin handle 332 is received in the first receiving groove 341, or inserted from the second pin hole 322, so that the pin handle 332 is received in the second receiving groove 342. During use, it is not necessary to distinguish the insertion direction of the limiting pin 330 to receive the pin handle 332 into the receiving groove 340, achieving a good receiving effect and making it more convenient to use.
[0027] In one embodiment, such as Figure 14 , 15 As shown, the pin handle 332 is provided with a first end face 350. When the pin post 331 is inserted into the positioning hole 310 and the lock cylinder cover 400 covers the outside of the lock cylinder frame 100, the first end face 350 of the pin handle 332 will abut against the first inner wall 420 of the lock cylinder cover 400 to prevent the pin post 331 from coming out of the positioning hole 310, so that the limiting pin 330 can maintain a stable limiting effect and ensure the connection stability of the coupler 600.
[0028] In one embodiment, multiple pins 331 are provided, and the number of positioning holes 310 is greater than the number of pins 331. The multiple pins 331 are arranged along a first direction x, and when the limiting pin is engaged, the multiple pins 331 can be simultaneously inserted into multiple positioning holes 310. The multiple pins 331 simultaneously restrict the relative sliding between the slider 210 and the sliding groove 120, resulting in better limiting stability and anti-vandalism protection.
[0029] In one embodiment, the engagement portion 700 is provided with a retaining groove 710. The retaining groove 710 can be engaged with the flange 620 of the coupler 600 to further improve the engagement stability between the engagement portion 700 and the coupler 600, making the connection between the trailer coupler lock and the coupler 600 more stable.
[0030] In one embodiment, multiple sets of retaining grooves 710 are provided. Different retaining grooves 710 can engage with flanges 620 of couplers 600 of different sizes and types, resulting in a better engagement between the joint 700 and the coupler 600. Multiple sets of retaining grooves 710 improve the adaptability of the joint 700 to different couplers 600 and optimize the connection stability of the coupler 600.
[0031] In one embodiment, a limiting plate 130 is provided on the lock cylinder frame 100, and a leveling groove 440 is provided on the lock cylinder cover 400. When the lock cylinder cover 400 covers the outside of the lock cylinder frame 100, the limiting plate 130 cooperates with the leveling groove 440 to restrict the lock cylinder cover 400 from covering the lock cylinder frame 100 in the circumferential direction, so that the first bolt 110 can extend well from the clearance hole 410, achieving a good installation effect. At the same time, the limiting plate 130, which is accommodated in the leveling groove 440, can also restrict relative rotation between the lock cylinder frame 100 and the lock cylinder cover 400, improving the overall stability of the trailer coupler lock. In one embodiment, as Figure 7-9 As shown in Figure 15, a second panel 140 is provided on the lock cylinder frame 100, and a second inner wall 430 is provided inside the lock cylinder cover 400. When the lock cylinder cover 400 covers the outside of the lock cylinder frame 100, the second panel 140 will abut against the second inner wall 430 to limit the relative position of the lock cylinder frame 100 and the lock cylinder cover 400, thereby improving the stability and integrity of the trailer coupler lock.
[0032] In one embodiment, such as Figure 9As shown, the second panel 140 is disposed at the second end 121 of the sliding groove 120. The second panel 140 blocks and closes the second end 121 of the sliding groove 120 to restrict the slider 210 from disengaging from the sliding groove 120, thereby improving the integrity and stability of the trailer coupler lock. Of course, in other embodiments, the second end 121 of the sliding groove 120 can also be made open. The slider 210 can slide out from the first end of the sliding groove 120, realizing the separation of the movable lock head 200 from the lock cylinder frame 100, making the connection between the movable lock head 200 and the coupler 600 more flexible and easier to install and use.
[0033] In one embodiment, such as Figure 6 , 7 As shown in Figures 15 and 16, a second locking tongue 450 is provided on the lock cylinder cover 400. The second locking tongue 450 is located outside the clearance hole 410. The locking member 500 can lock the first locking tongue 110 and the second locking tongue 450 together. This not only locks the lock cylinder frame 100 inside the lock cylinder cover 400, but also fixes the relative position of the lock cylinder frame 100 and the lock cylinder cover 400, preventing the lock cylinder frame 100 from shaking in the lock cylinder cover 400 and affecting the integrity and user experience of the trailer coupler lock.
[0034] In one embodiment, the lock cylinder cover 400 is provided with a mounting groove 460, and a clearance hole 410 is provided within the mounting groove 460. The locking member 500 is configured as a hockey puck lock and is installed within the mounting groove 460. The lock groove 510 of the hockey puck lock faces the clearance hole 410, allowing the first locking bolt 110 and the second locking bolt 450 to extend into the lock groove 510 for locking, thereby locking the lock cylinder frame 100 to the inside of the lock cylinder cover 400. The hockey puck lock has strong anti-vandalism performance, and its concealed lock beam design provides strong anti-shear and anti-sawing capabilities, greatly enhancing the security of the trailer coupler lock.
[0035] In one embodiment, the lock cylinder cover 400 is provided with a wrench groove 470. The wrench groove 470 is used to avoid the locking wrench 630 on the coupler 600, so as to prevent the coupler locking wrench 630 from interfering with the connection between the coupler 600 and the trailer coupler lock, thereby improving the user experience and compatibility of the trailer coupler lock. At the same time, the locking wrench 630 on the coupler 600, when placed in the wrench groove 470, can also limit the relative rotation between the coupler 600 and the trailer coupler lock, optimizing the user experience of the trailer coupler lock.
[0036] In one embodiment, such as Figure 17-22As shown, the lock cylinder frame 100 includes a connecting portion 700 and a sliding groove 120. The movable lock head 200 includes a slider 210 and a connector 800. The sliding groove 120 extends along a first direction x, and the slider 210 is slidably mounted within the sliding groove 120, achieving a movable connection between the lock cylinder frame 100 and the movable lock head 200. The connector 800 can engage with the ball cavity 610 of the coupler 600, and the connecting portion 700 can engage with at least one surface of the coupler 600. The connector 800 is connected to the slider 210, and the slider 210 slides along the sliding groove 120 to drive the connector 800 to move, allowing the relative position of the connecting portion 700 and the connector 800 to be adjusted to accommodate couplers 600 of different sizes and types.
[0037] When connecting the coupler 600, first engage the ball cavity 610 of the coupler 600 with the connector 800 on the lock cylinder frame 100. Then, the slider 210 slides along the sliding groove 120, causing the connector 800 and the coupler 600 to move, so that the outer surface of the coupler 600 engages with the engagement portion 700 on the movable lock head 200. At this time, the engagement portion 700 and the connector 800 work together to clamp and fix the coupler 600 between the lock cylinder frame 100 and the movable lock head 200, achieving a good connection effect.
[0038] In one embodiment, such as Figure 19-22 As shown, a limiting groove 360 is provided on the slider 210 extending along the first direction x, and the two ends of the limiting groove 360 are closed. A limiting hole 370 is provided on the inner wall of the sliding groove 120. A limiting screw 380 passes through the limiting hole 370, so that the limiting end 381 of the limiting screw 380 is inserted into the limiting groove 360, so that the limiting end 381 of the limiting screw 380 can only slide within the limiting groove 360, thereby limiting the sliding range of the slider 210 within the sliding groove 120, preventing the slider 210 from coming out of the sliding groove 120, thereby improving the integrity and stability of the trailer coupler lock.
[0039] As can be seen from the above description, the above embodiments achieve the following technical effects: 1) The lock cylinder frame 100 and the movable lock head 200 are movably connected, which can change the relative position of the lock cylinder frame 100 and the movable lock head 200 to allow for connection of couplers 600 of different sizes and types, thereby improving the compatibility of trailer coupler locks.
[0040] 2) The lock cylinder cover 400 can protect the inner lock cylinder frame 100, movable lock head 200 and the joint 700 of the coupler 600, preventing external forces from directly damaging the connection structure and improving anti-theft security; at the same time, the lock cylinder cover 400 also includes the limiting member 300 inside, preventing external contact or operation of the limiting member 300 from causing relative movement between the lock cylinder frame 100 and the movable lock head 200, and ensuring the connection stability of the coupler 600.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A trailer coupler lock, the coupler having a ball cavity, characterized in that, The coupler lock includes: A lock cylinder frame has a connector that engages with the ball cavity of the coupler and a first lock tongue, and a sliding groove is provided on the lock cylinder frame extending along a first direction; A movable locking head includes: a slider and a connecting part; the slider is slidably installed in the sliding groove, the connecting part is connected to the slider, the connecting part engages with at least one surface of the coupler, and the connecting part cooperates with the connector to clamp and fix the coupler; The limiting component can be selectively connected to both the lock cylinder frame and the slider simultaneously to limit the position of the slider within the sliding groove; A lock cylinder cover, optionally fitted over the outside of the lock cylinder frame, has clearance holes on it; and A locking element is provided on the periphery of the lock cylinder cover; When the lock cylinder cover is located on the outside of the lock cylinder frame, the first lock tongue passes through the clearance hole and connects with the locking member to lock the lock cylinder frame inside the lock cylinder cover.
2. The trailer coupler lock according to claim 1, characterized in that, The slider has multiple positioning holes arranged along the first direction, and the inner wall of the sliding groove has a pin hole; the limiting member is a limiting pin. The limiting pin passes through the pin hole and is inserted into the positioning hole to restrict the slider from sliding within the sliding groove.
3. The trailer coupler lock according to claim 2, characterized in that, The positioning hole extends through the slider along the second direction; the pin hole includes: a first pin hole and a second pin hole; The limiting pin passes through the first pin hole, the positioning hole, and the first pin hole in sequence to restrict the slider from sliding within the sliding groove.
4. The trailer coupler lock according to claim 2, characterized in that, The limiting pin includes: a pin post and a pin handle connected to the pin post; the lock cylinder frame is provided with a receiving groove, the pin hole is located on the inner wall of the receiving groove, and connects the receiving groove and the sliding groove; When the pin passes through the pin hole and is inserted into the positioning hole, the pin handle is accommodated in the accommodating groove; The pin handle is provided with a first end face; When the pin passes through the pin hole and is inserted into the positioning hole, and the lock cylinder cover is placed on the outside of the lock cylinder frame, the connector, the movable lock head and the limiting pin are all located inside the lock cylinder cover. The first lock tongue passes through the clearance hole and is connected to the locking member. The first end face of the pin handle abuts against the first inner wall of the lock cylinder cover.
5. The trailer coupler lock according to claim 4, characterized in that, The system has multiple pins arranged side-by-side along the first direction, which can be simultaneously inserted into multiple positioning holes; the number of positioning holes is greater than the number of pins.
6. The trailer coupler lock according to claim 1, characterized in that, The joint is provided with a retaining groove for engagement of the coupler flange; The lock cylinder frame is provided with a limiting plate, and the lock cylinder cover is provided with a leveling groove; When the lock cylinder cover is installed outside the lock cylinder frame, the limiting plate is accommodated in the leveling groove to restrict the relative rotation between the lock cylinder frame and the lock cylinder cover.
7. The trailer coupler lock according to claim 1, characterized in that, The lock cylinder frame also includes a second panel, and a second inner wall is provided inside the lock cylinder cover. When the lock cylinder cover is located outside the lock cylinder frame, the second panel abuts against the second inner wall. The second panel is disposed at the second end of the sliding groove to restrict the slider from disengaging from the sliding groove.
8. The trailer coupler lock according to claim 1, characterized in that, The lock cylinder cover is provided with a second locking tongue; when the first locking tongue passes through the clearance hole, the locking member locks the first locking tongue and the second locking tongue together. The lock cylinder cover is provided with a mounting groove, and the clearance hole is provided on the inner wall of the mounting groove; The locking element is configured as a hockey puck lock. When the locking element locks the first locking tongue, the locking element is accommodated in the mounting groove. The locking sleeve cover is provided with a wrench groove to avoid the locking wrench of the coupler.
9. A trailer coupler lock, the coupler having a ball cavity, characterized in that, The coupler lock includes: A lock cylinder frame has a joint and a first latch, the joint engaging with at least one surface of the coupler, and a sliding groove extending along a first direction is provided on the lock cylinder frame; The movable locking head includes: a connector and a slider; the slider is slidably installed in the sliding groove, the connector is connected to the slider, the connector engages with the ball cavity of the coupler, and the engaging part cooperates with the connector to clamp and fix the coupler; The limiting component can be selectively connected to both the lock cylinder frame and the slider simultaneously to limit the position of the slider within the sliding groove; A lock cylinder cover, optionally fitted over the outside of the lock cylinder frame, has clearance holes on it; and A locking element is provided on the periphery of the lock cylinder cover; When the lock cylinder cover is located on the outside of the lock cylinder frame, the first lock tongue passes through the clearance hole and connects with the locking member to lock the lock cylinder frame inside the lock cylinder cover.
10. The trailer coupler lock according to claim 9, characterized in that, A limiting groove is provided on the slider extending along the first direction, and a limiting hole is provided on the inner wall of the sliding groove; The limiting screw is inserted into the limiting hole, and its limiting end is placed into the limiting groove to prevent the slider from coming out of the sliding groove.