Anti-theft lock for trailer
By designing a trailer anti-theft lock, which uses a lock cylinder and locking components to lock the hook, the problem of theft of towed caravans has been solved, and an effective anti-theft function has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN YICAI ELECTRICAL TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-24
AI Technical Summary
Trailer caravans are easily stolen while parked, and existing locks are not effective in preventing the caravan from being towed away when the hook is engaged.
Design a trailer anti-theft lock, including a lock cylinder, a locking member, and a lock plate. The locking member can lock the hook, and the end of the lock plate extends out of the bottom hole and locks with the lock. The locking member and the lock plate cooperate to fix it to the lock cylinder and prevent the hook from connecting to the vehicle hook.
Effectively prevents theft of towed caravans by using locking components and locking plates to ensure that the hooks cannot connect with the vehicle hooks, thus preventing the caravan from being towed away.
Smart Images
Figure CN224159133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a lock, and more particularly to a trailer anti-theft lock. Background Technology
[0002] With social development, many people are keen on traveling in motorhomes. Currently, there are roughly two types of motorhomes: towable and integrated.
[0003] A towable caravan is not powered on its own and needs to be towed by another vehicle to move. Towable caravans are connected to other vehicles via hooks, thus enabling them to be towed.
[0004] However, caravans are easily stolen when parked. Other vehicles can easily tow them away by connecting the caravan's hook to the caravan's hook.
[0005] Therefore, in order to prevent the theft of towed caravans, the applicant designed a trailer anti-theft lock in conjunction with purchased cylindrical locks to solve the above problems. Summary of the Invention
[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a trailer anti-theft lock.
[0007] The technical solution adopted by this utility model to solve its technical problem is:
[0008] A trailer anti-theft lock includes a lock assembly, characterized in that: it further includes a lock cylinder, the lock cylinder is provided with a locking member capable of locking a hook and a lock plate connected to the locking member, the bottom of the lock cylinder is provided with a bottom hole, and the end of the lock plate can extend out of the bottom hole and lock with the lock assembly.
[0009] The locking component includes a support plate and a lock head disposed on the support plate, the lock head being able to engage with the hook.
[0010] The lock head includes four locking plates arranged in a cross shape, and the outer edges of the locking plates are rounded.
[0011] The lock plate is provided with a slot, and the lock cylinder is provided with a positioning plate that can be engaged with the slot.
[0012] The locking plate has a vertical plate and a horizontal plate connected to the vertical plate on one side, and the slot is composed of the locking plate, the vertical plate and the horizontal plate.
[0013] The locking plate also includes a first plate and a second plate connected to the first plate. The end is connected to the second plate, and the locking member is fixed to the first plate.
[0014] The second plate is perpendicular to the first plate and the end.
[0015] The lock cylinder is provided with several drainage holes.
[0016] The lock plate has a lock hole.
[0017] The end of the locking plate is provided with an arc-shaped insert plate, and the bottom hole is located in the insert plate.
[0018] The beneficial effects of this utility model are as follows: the lock cylinder is provided with a locking member that can lock the hook and a locking plate connected to the locking member. The bottom of the lock cylinder is provided with a bottom hole, and the end of the locking plate can extend out of the bottom hole and lock with the lock. Through the above structure, the hook can be inserted into the lock cylinder and locked with the locking member. At the same time, the locking member, the locking plate and the lock cooperate to fix it as a whole with the lock cylinder, thereby locking the hook. In this way, the car hook on the car cannot be connected with the hook, thus avoiding the risk of the towed caravan being towed away by other vehicles. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Figure 1 This is an overall structural view of the present invention;
[0021] Figure 2 This is an overall structural view of the present invention from another direction;
[0022] Figure 3 This is an exploded structural view of the present invention;
[0023] Figure 4 This is a structural view of the lock cylinder.
[0024] Figure 5 This is a partial sectional view of the hook's longitudinal section. Detailed Implementation
[0025] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.
[0026] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.
[0027] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.
[0028] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more boards may be arranged between two other boards unless "immediately next to" or "directly" is used.
[0029] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.
[0030] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.
[0031] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in a board-like or fully-like manner, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.
[0032] Reference Figures 1 to 4 This utility model discloses a trailer anti-theft lock, including a lock (not shown in the figure) and a lock cylinder 1. The lock cylinder 1 is provided with a locking member 3 that can lock the hook 2 and a lock plate 4 connected to the locking member 3. The bottom of the lock cylinder 1 is provided with a bottom hole 5. The end 17 of the lock plate 4 can extend out of the bottom hole 5 and lock with the lock. The hook 2 can be locked by the above structure.
[0033] like Figure 5As shown, one end of the hook 2 is connected to the trailer caravan, and the other end of the hook 2 is provided with a circular groove 6. In use, the locking member 3 is first inserted into the circular groove 6. In this application, the lock head of the locking member 3 is inserted into the circular groove 6. Then, the lock cylinder 1 is moved so that the locking member 3 and the other end of the hook 2 are inserted into the lock cylinder 1 until the end 17 of the lock plate 4 protrudes from the bottom hole 5. Then, the lock is locked with the end 17 of the lock plate 4. The end 17 of the lock plate 4 cannot come out from the bottom hole 5, so the other end of the hook 2 cannot come out from the lock cylinder 1. Therefore, after the other end of the hook 2 is inserted into the lock cylinder 1, the other end of the hook 2 is located between the locking member 3 and the inner wall of the lock cylinder 1. Due to the restriction of the inner wall of the lock cylinder 1, the other end of the hook 2 does not have enough radial movement space, so it cannot separate from the locking member 3 and come out from the lock cylinder 1. The lock locks the end 17 of the lock plate 4, and the locking member 3 cannot come out from the lock cylinder 1, so the other end of the hook 2 cannot come out from the lock cylinder 1. Radial movement refers to the radial direction along the lock cylinder 1.
[0034] As a preferred structure, the lock plate 4 is provided with a lock hole 7, and the lock can be a padlock. The padlock passes through the lock hole 7 to lock the lock plate 4. Of course, this application uses a special cylindrical lock. The special lock is fitted on the lock cylinder 1, and then the lock tongue of the special lock passes through the lock hole 7 to lock the lock plate 4. In this way, the lock plate 4 cannot come out from the opening of the lock cylinder 1. The bottom hole 5 is the same size as the lock plate 4, so it can only pass through the lock plate 4. The locking member 3 cannot pass through the bottom hole 5.
[0035] The locking component 3 includes a support plate 8 and a lock head 9 disposed on the support plate 8. The lock head 9 can engage with the hook 2, which saves material and positions the lock head 9 relatively close to the inner wall of the lock cylinder 1. Specifically, the lock head 9 includes four locking plates 10 arranged in a cross shape, with the outer edges of the locking plates 10 being rounded. This saves material and facilitates processing. Alternatively, the lock head 9 can be directly welded to the support plate 8 using a metal ball head.
[0036] As shown in the figure, the lock plate 4 is provided with a slot 11, and the lock cylinder 1 is provided with a positioning plate 12 that can be inserted into the slot 11. The above structure facilitates the installation of the lock cylinder 1 and the lock plate 4. With the cooperation of the positioning plate 12 and the slot 11, the user can quickly position the extension length of the end 17 of the lock plate 4 when locking the trailer, and this can also prevent the lock plate 4 from rotating.
[0037] As shown in the figure, the locking plate 4 has a vertical plate 13 and a horizontal plate 14 connected to the vertical plate 13 on one side. The slot 11 is composed of the locking plate 4, the vertical plate 13 and the horizontal plate 14. Through the above structure, the vertical plate 13 can abut against the bottom of the locking cylinder 1.
[0038] The locking plate 4 also includes a first plate 15 and a second plate 16 connected to the first plate 15. The end plate 17 is connected to the second plate 16. The locking member 3 is fixed to the first plate 15. The second plate 16 is perpendicular to the first plate 15 and the end plate 17. The second plate 16 is perpendicular to the first plate 15 and the end plate 17. Through the above structure, the second plate 16 can abut against the bottom of the lock cylinder 1, thus improving the structural security of the lock. If the end plate 17 of the locking plate 4 is pulled violently, the second plate 16 abuts against the bottom of the lock cylinder 1, thereby preventing the locking plate 4 from moving. This causes the locking member 3 to deform against the bottom of the lock cylinder 1, resulting in the hook 2 coming off.
[0039] As shown in the figure, the lock cylinder 1 is provided with several drainage holes 18 to prevent water from accumulating inside the lock cylinder 1.
[0040] As shown in the figure, the end 17 of the lock plate 4 is provided with an arc-shaped insert plate 19, and the bottom hole 5 is located in the insert plate 19. The insert plate 19 is used in conjunction with a special lock. Compared with the special lock being fitted onto the lock cylinder 1, the special lock can be smaller in size when it is fitted onto the insert plate 19. Of course, the bolt of the special lock passes through the notch of the insert plate 19 and then through the lock hole 7 to lock the lock plate 4.
[0041] The above provides a detailed description of a trailer anti-theft lock provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A trailer anti-theft lock, comprising a lock mechanism, characterized in that... It also includes a lock cylinder, which contains a locking element that can lock the hook and a lock plate connected to the locking element. The bottom of the lock cylinder has a bottom hole, and the end of the lock plate can extend out of the bottom hole to lock with the lock.
2. The trailer anti-theft lock according to claim 1, characterized in that: The locking component includes a support plate and a lock head disposed on the support plate, the lock head being able to engage with the hook.
3. A trailer anti-theft lock according to claim 2, characterized in that: The lock head includes four locking plates arranged in a cross shape, and the outer edges of the locking plates are rounded.
4. A trailer anti-theft lock according to claim 1, characterized in that: The lock plate is provided with a slot, and the lock cylinder is provided with a positioning plate that can be engaged with the slot.
5. A trailer anti-theft lock according to claim 4, characterized in that: The locking plate has a vertical plate and a horizontal plate connected to the vertical plate on one side, and the slot is composed of the locking plate, the vertical plate and the horizontal plate.
6. A trailer anti-theft lock according to claim 1, characterized in that: The locking plate also includes a first plate and a second plate connected to the first plate. The end is connected to the second plate, and the locking member is fixed to the first plate.
7. A trailer anti-theft lock according to claim 6, characterized in that: The second plate is perpendicular to the first plate and the end.
8. A trailer anti-theft lock according to claim 1, characterized in that: The lock cylinder is provided with several drainage holes.
9. A trailer anti-theft lock according to claim 1, characterized in that: The lock plate has a lock hole.
10. A trailer anti-theft lock according to claim 1, characterized in that: The end of the locking plate is provided with an arc-shaped insert plate, and the bottom hole is located in the insert plate.