Trailer lock

Abstract

The utility model discloses a trailer lock which comprises a rigid shell. The interlocking adapter is detachably installed in the rigid shell, the interlocking adapter is provided with a cross-shaped protrusion, and the cross-shaped protrusion is used for being connected with an interlocking groove of a trailer hook; and the locking assembly is detachably connected to the interlocking adapter, and when the interlocking adapter is locked by the locking assembly, the locking assembly abuts against the outer surface of the rigid shell. The cross-shaped protrusion and the interlocking groove of the trailer hook are locked in a matched mode, a safety chain of a trailer can also be wound around the interlocking adapter, the rigid shell covers the whole interlocking adapter, and the safety of the improved trailer hook is guaranteed in a multiple mode.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a trailer lock installed on a trailer hook. Background Technology

[0002] To prevent theft, most users install a trailer lock on the trailer hitch to secure it. When the trailer is parked, the user can use the trailer lock to tighten the hitch, preventing theft and extending the lifespan of the hitch.

[0003] Trailer hooks on the market typically have interlocking grooves. Current technology utilizes the locking protrusion of the trailer lock to engage with the interlocking groove, locking the trailer hook to the trailer lock to protect the trailer. Currently, most existing trailer locks use spherical or single-piece locking protrusions. Spherical locking protrusions have a complex manufacturing process, while single-piece locking protrusions offer unreliable connections to the trailer hook. Furthermore, the housing of most trailer locks on the market does not completely cover the interlocking adapter, potentially leading to damage to the lock and a shorter lifespan in rainy or snowy weather or when the trailer is outdoors for extended periods. Moreover, some trailer locks do not provide a connection or storage location for the trailer safety chain, which could result in the trailer separating from the safety chain.

[0004] Therefore, this utility model provides a trailer lock that can effectively solve the above problems. It has a simple structure and a good locking effect. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a trailer lock with simple structure and good locking effect.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A trailer lock, comprising:

[0008] Rigid casing;

[0009] An interlock adapter is detachably installed within the rigid housing, and the interlock adapter has a cross-shaped protrusion for connecting with the interlocking groove of a trailer hook.

[0010] A locking component, detachably connected to the interlock adapter, wherein when the locking component locks the interlock adapter, the locking component abuts against the outer surface of the rigid housing.

[0011] As an improvement of this utility model, the cross-shaped protrusion includes two protrusions, which are connected in a cross manner.

[0012] As an improvement of this utility model, the interlock adapter is further provided with a locking piece, an interlock plate and a fixing plate. The cross-shaped protrusion is connected to the interlock plate through the fixing plate. The locking piece is located at one end of the interlock plate. The locking piece is provided with a locking hole. The locking component is detachably connected to the locking hole and the locking component abuts against the outer surface of the rigid housing.

[0013] As an improvement of this utility model, the fixing plate extends downward from the bottom of the cross-shaped protrusion and passes through the interlocking plate. The rigid shell is also provided with a connecting plate, and the connecting plate is provided with a connecting groove. The part of the fixing plate that passes through the interlocking plate is detachably inserted into the connecting groove.

[0014] As an improvement of this utility model, a fixing block is provided at the lower end of the fixing plate. The interlocking plate, the part of the fixing plate that passes through the interlocking plate, and the fixing block form an approximately "I" shaped structure. When the trailer lock is locked, the interlocking plate and the fixing block are located on the upper and lower sides of the connecting plate, respectively.

[0015] As an improvement of this utility model, the rigid housing is provided with a first opening to allow the trailer hook to pass through the first opening and enter the rigid housing.

[0016] As an improvement to this utility model, the dimensions of the first opening and the rigid shell are respectively matched with the dimensions of the trailer hook.

[0017] As an improvement to this invention, the rigid housing is provided with a second opening, which allows the locking piece to pass through and connect with the locking assembly.

[0018] As an improvement of this utility model, a protective cover is provided around the second opening on the rigid outer shell. The protective cover protects the locking component. The protective cover has a notch. The locking component has a locking tongue rod. The notch allows the locking tongue rod to pass through, so as to realize the locking or releasing operation of the locking component.

[0019] As an improvement of this utility model, the rigid shell is provided with a drain outlet, the position of which corresponds to the position of the connecting plate.

[0020] The beneficial effects of this utility model are as follows: With the above-described structure, after the cross-shaped protrusion connects to the trailer hook, the rigid outer shell covers the interlock adapter. The interlock adapter then cooperates with the locking component to control the locking or releasing of the trailer lock. The cross-shaped protrusion also engages with the interlock groove of the trailer hook, allowing the trailer's safety chain to be wrapped around the interlock adapter, thus providing multiple layers of protection and enhancing the safety of the trailer hook. Attached Figure Description

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced, and the drawings in the following description are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0022] The present application will be further described below in combination with the drawings and embodiments.

[0023] Figure 1 is a whole structure schematic view of one angle of the trailer lock of the present application;

[0024] Figure 2 is a whole structure schematic view of another angle of the trailer lock of the present application;

[0025] Figure 3 is an exploded structure schematic view of one angle of the trailer lock of the present application;

[0026] Figure 4 is an exploded structure schematic view of another angle of the trailer lock of the present application;

[0027] Figure 5 is a cross-sectional structure schematic view of the trailer lock of the present application;

[0028] Figure 6 is a structure schematic view of the interlocking adapter of the trailer lock of the present application;

[0029] Figure 7 is a connection structure schematic view of the interlocking adapter and the connecting plate of the trailer lock of the present application;

[0030] Figure 8 is a structure schematic view of the rigid shell of the trailer lock of the present application.

[0031] Explanation of reference signs:

[0032] 100, rigid shell; 110, connecting plate; 111, connecting groove; 120, first opening; 130, second opening; 140, drain port; 150, protective cover; 151, notch; 200, interlocking adapter; 210, locking piece; 211, locking hole; 220, cross-shaped protrusion; 230, interlocking plate; 240, fixing plate; 241, fixing block; 300, locking assembly; 310, lock tongue rod. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of the terms "include", "comprise" or "contain" herein should not be understood as limiting the present application to the features or steps described herein, but rather the use of these terms is intended to cover the presence of the features or steps described herein as well as the presence of other features or steps not described herein.

[0034] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0036] In the present application, unless otherwise specifically defined and limited, if the terms "mount", "connect", "connect", "fix" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are used for illustrative purposes only and are not intended to be limiting.

[0039] Referring to Figures 1 to 8 A trailer lock, comprising:

[0040] A rigid shell 100;

[0041] An interlocking adapter 200 detachably mounted in the rigid shell 100, the interlocking adapter 200 is provided with a cross-shaped protrusion 220 for connecting with an interlocking groove of a trailer hitch;

[0042] A locking assembly 300 detachably connected to the interlocking adapter 200, when the locking assembly 300 locks the interlocking adapter 200, the locking assembly 300 abuts the outer surface of the rigid shell 100.

[0043] Through the above structure, in use, first lock the cross-shaped protrusion 220 and the interlocking groove of the trailer hitch, and then wrap the trailer safety chain around the interlocking adapter 200, then align the rigid shell 100 with the interlocking adapter 200 to connect them tightly, and finally use the locking assembly 300 to connect and lock the interlocking adapter 200 to lock the trailer lock and the trailer hitch. Since the rigid shell 100 can completely shield the connection part of the interlocking adapter 200 and the trailer hitch, such design makes it difficult for others to easily damage the trailer lock from the outside, and at the same time, under the influence of rain, snow or other extreme weather, the interlocking adapter 200 is prevented from being corroded and damaged.

[0044] In the embodiment, the cross-shaped protrusion 220 includes two tabs, and the two tabs are cross-linked. Through the arrangement of the above structure, the cross-shaped protrusion 220 formed by the cross of the two tabs can be more firmly and reliably connected with the trailer hook. Compared with the single-tab protrusion, the cross-shaped protrusion 220 provides more contact area and support points, so that the connection between the cross-shaped protrusion 220 and the trailer hook is more firm and reliable. Compared with the traditional spherical protrusion, the structure of the cross-shaped protrusion 220 is simpler and the manufacturing process is more convenient, which not only helps to reduce the production cost, but also may reduce the problems in the use process, thereby improving the overall reliability of the trailer lock. Preferably, a vertical groove is arranged on one of the tabs, and the other tab is inserted into the vertical groove to become the cross-shaped protrusion 220. Alternatively, when the number of tabs is three, the locking protrusion can be correspondingly arranged as a snowflake-shaped protrusion; when the number of tabs is four, the locking protrusion can be correspondingly arranged as a rice-shaped protrusion.

[0045] In the embodiment, the interlocking adapter 200 is also provided with a locking piece 210, an interlocking plate 230 and a fixing plate 240. The cross-shaped protrusion 220 is connected with the interlocking plate 230 through the fixing plate 240. The locking piece 210 is located at one end of the interlocking plate 230. The locking piece 210 is provided with a locking hole 211. The locking assembly 300 is detachably connected to the locking hole 211 and abuts against the outer surface of the rigid outer shell 100. Through the arrangement of the above structure, the locking piece 210 and the locking assembly 300 are connected with each other to lock the trailer lock and the trailer hook. Among them, the cross-shaped protrusion 220 and the trailer hook are connected with each other. The fixing plate 240 not only fixedly connects the cross-shaped protrusion 220 and the interlocking plate 230, but also provides a fixing point of the trailer hook safety chain, which means that the trailer hook safety chain can be firmly wound on the fixing plate 240, further increasing the safety of the trailer hook.

[0046] In this embodiment, the fixing plate 240 extends downward from the bottom of the cross-shaped protrusion 220 and passes through the interlocking plate 230. A connecting plate 110 is also provided inside the rigid housing 100, and the connecting plate 110 has a connecting groove 111. The portion of the fixing plate 240 that passes through the interlocking plate 230 is detachably inserted into the connecting groove 111. Through this structure, the interlocking adapter 200 is detachably connected to the rigid housing 100, and the interlocking adapter 200 is located inside the rigid housing 100. This design prevents the interlocking adapter 200 from being damaged by human intervention or corroded by weather conditions. The fixing plate 240 that passes through the interlocking plate 230 is inserted into the connecting groove 111 to connect and engage the rigid housing 100 and the interlocking adapter 200. The design of the connecting groove 111 provides a certain installation guide for the connection between the interlocking adapter 200 and the rigid housing 100; simply aligning the fixing plate 240 with the connecting groove 111 completes the insertion of the rigid housing 100 and the interlocking adapter 200.

[0047] In this embodiment, a fixing block 241 is provided at the lower end of the fixing plate 240. The interlocking plate 230, the portion of the fixing plate 240 extending through the interlocking plate 230, and the fixing block 241 form an approximately "I"-shaped structure. When the trailer lock is locked, the interlocking plate 230 and the fixing block 241 are located on the upper and lower sides of the connecting plate 110, respectively. Through the above structural arrangement, the interlocking plate 230, the fixing plate 240, and the fixing block 241 together form an approximately "I"-shaped structure. When the rigid housing 100 is connected to the interlocking adapter 200, the fixing plate 240 passes through the connecting groove 111. This design allows the rigid housing 100 to be fitted onto the interlocking adapter 200 after the trailer hook is connected and locked. The connecting groove 111 can easily engage with the fixing plate 240. This structure enables a tight fit between the components, providing stronger mechanical support and stability. Preferably, the area of ​​the fixing block 241 that contacts the fixing plate 240 is larger than the area of ​​the fixing plate 240.

[0048] In this embodiment, the rigid housing 100 is provided with a first opening 120 to allow the trailer hook to pass through the first opening 120 and enter the rigid housing 100. This structural design ensures that the trailer hook can smoothly enter the rigid housing 100 and connect with the interlock adapter 200. The first opening 120 provides a guiding function for the connection and effectively prevents dust and rainwater from entering the trailer lock, ensuring a proper connection between the trailer hook and the interlock adapter 200. This not only simplifies the user's operation process but also enhances the overall reliability and durability of the trailer lock.

[0049] In this embodiment, the size of the first opening 120 and the rigid shell 100 are matched with the size of the trailer hook. Through the above structure, the size of the first opening 120 is matched with the size of the trailer hook, which avoids the first opening 120 being damaged by human factors due to its oversize, and also avoids the difficulty of connecting the trailer hook with the interlocking adapter 200 due to the undersize of the first opening 120. Similarly, the size of the rigid shell 100 is matched with the size of the trailer hook, which not only ensures the compactness and aesthetics of the trailer lock overall structure, but also enhances the stability and safety of the trailer lock. The size matching ensures the good cooperation between each component, and improves the overall reliability of the trailer lock. In the case of frequent use of the trailer or long-term exposure to the outdoors, the precisely matched size design can effectively prevent rain, dust and other pollutants from entering the trailer lock, and ensure that each locking connection can be completed smoothly, reducing the difficulty and time of the user's operation.

[0050] In this embodiment, the rigid shell 100 is provided with a second opening 130, which allows the locking piece 210 to pass through and connect with the locking assembly 300. Through the above structure, the design of the second opening 130 makes most of the structure of the interlocking adapter 200 still inside the rigid shell 100, only the locking piece 210 that cooperates with the locking assembly 300 passes out of the second opening 130, which optimizes the space utilization and improves the overall aesthetics of the trailer lock. Preferably, the size of the second opening 130 is matched with the size of the locking piece 210, which makes the locking assembly 300 abut against the outer surface of the rigid shell 100 after the locking assembly 300 is connected and locked with the interlocking adapter 200, so that the overall performance of the trailer lock is more solid and reliable.

[0051] In this embodiment, a protective cover 150 is provided around the rigid outer shell 100 at the position surrounding the second opening 130. The protective cover 150 protects the locking assembly 300. The protective cover 150 has a notch 151, and the locking assembly 300 has a locking tongue 310. The notch 151 allows the locking tongue 310 to pass through, thereby enabling the locking assembly 300 to lock or release. Through the above structural arrangement, the protective cover 150, positioned around the second opening 130, provides an additional physical protective barrier to protect the locking assembly 300 from damage and to prevent it from being affected or damaged by human factors or external environmental factors such as dust, water, or impact. The locking assembly 300 includes a locking tongue 310, and the notch 151 on the protective cover 150 allows the locking tongue 310 to pass through, enabling the user to lock or release the locking assembly 300. Preferably, the notch 151 is located on the lower surface of the protective cover 150. This design facilitates the installation of the locking component 300, and the locking tongue 310 can pass through the notch 151, making it convenient for the user to lock or release the locking component 300. The design of the notch 151 ensures that while providing protection for the locking component 300, it does not affect the normal operation of the locking component 300 by the user. When using the sleeve lock, the user first locks the cross-shaped protrusion 220 with the interlocking groove of the trailer hook, and wraps and stores the trailer safety chain in the fixing plate 240. Then, the connecting groove 111 is aligned with the fixing plate 240 that passes through the interlocking plate 230. Since the fixing block 241, the fixing plate 240, and the interlocking plate 230 are roughly in the shape of an "I", the insertion relationship between the connecting groove 111 and the fixing plate 240 will be tighter. Finally, the locking component 300 is connected and locked with the locking hole 211 on the locking piece 210 to lock the trailer lock and the trailer hook.

[0052] In this embodiment, the lower surface of the rigid housing 100 is provided with a drain outlet 140. With this structure, in rainy or snowy weather, when the trailer is parked outdoors, rainwater accumulated inside the trailer lock can flow out through the drain outlet 140. Preferably, the position of the drain outlet 140 corresponds to the position of the connecting plate 110, so that when the trailer lock is locked to the trailer hook, the position of the drain outlet 140 also corresponds to the ground, allowing rainwater accumulated in the drain outlet 140 to flow out more smoothly. Effective drainage through the drain outlet 140 prevents the internal components of the trailer lock from being in contact with moisture for extended periods, thereby extending the overall service life of the trailer lock. This is especially important for trailers that need to be exposed to outdoor environments for long periods.

[0053] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the protection scope of this utility model.

Claims

1. A trailer lock, characterized in that, include: Rigid housing (100); An interlock adapter (200) is detachably installed inside the rigid housing (100). The interlock adapter (200) is provided with a cross-shaped protrusion (220) for connecting with the interlocking groove of the trailer hook. A locking component (300) is detachably connected to the interlock adapter (200), and when the locking component (300) locks the interlock adapter (200), the locking component (300) abuts against the outer surface of the rigid housing (100).

2. The trailer lock of claim 1, wherein, The cross-shaped protrusion (220) includes two tabs that are cross-connected.

3. The trailer lock of claim 1, wherein, The interlock adapter (200) is further provided with a locking piece (210), an interlock plate (230) and a fixing plate (240). The cross-shaped protrusion (220) is connected to the interlock plate (230) through the fixing plate (240). The locking piece (210) is located at one end of the interlock plate (230). The locking piece (210) is provided with a locking hole (211). The locking component (300) is detachably connected to the locking hole (211) and the locking component (300) abuts against the outer surface of the rigid housing (100).

4. The trailer lock of claim 3, wherein, The fixing plate (240) extends downward from the bottom of the cross-shaped protrusion (220) and passes through the interlocking plate (230). The rigid shell (100) is also provided with a connecting plate (110). The connecting plate (110) is provided with a connecting groove (111). The part of the fixing plate (240) that passes through the interlocking plate (230) is detachably inserted into the connecting groove (111).

5. The trailer lock of claim 4, wherein, The lower end of the fixing plate (240) is provided with a fixing block (241). The interlocking plate (230), the part of the fixing plate (240) that passes through the interlocking plate (230) and the fixing block (241) form an approximately "I" shaped structure. When the trailer lock is locked, the interlocking plate (230) and the fixing block (241) are located on the upper and lower sides of the connecting plate (110), respectively.

6. The trailer lock of claim 1, wherein, The rigid housing (100) is provided with a first opening (120) to allow the trailer hook to pass through the first opening (120) into the rigid housing (100).

7. The trailer lock of claim 6, wherein, The dimensions of the first opening (120) and the rigid housing (100) are respectively matched with the dimensions of the trailer hook.

8. The trailer lock of claim 3, wherein, The rigid housing (100) is provided with a second opening (130) that allows the locking tab (210) to pass through.

9. The trailer lock of claim 8, wherein, The rigid housing (100) is surrounded by a protective cover (150) at the position of the second opening (130). The protective cover (150) protects the locking assembly (300). The protective cover (150) has a notch (151). The locking assembly (300) has a locking tongue (310). The notch (151) allows the locking tongue (310) to pass through in order to realize the locking or releasing operation of the locking assembly (300).

10. The trailer lock of claim 1, wherein, The lower surface of the rigid shell (100) is provided with a drain opening (140).

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