Pull type motor home lock

Abstract

The utility model discloses a travel trailer lock. Comprising a cover body and a lock cylinder arranged on the cover body, an output shaft of the lock cylinder is arranged in the cover body, a locking column is installed in the cover body in a hinged mode, a ball head is arranged at the top end of the locking column, and a limiting mechanism used for restraining the locking column from rotating is installed on the output shaft of the lock cylinder. And after the locking column is separated from the inhibition of the limiting mechanism and rotates outwards, a space for clamping the trailer ball head cover is reserved between the ball head and the cover opening of the cover body. The cover body is used for preventing the trailer ball head cover from being exposed, so that a closed ring is formed at the position of the trailer ball head cover, the anti-knocking capacity can be improved, meanwhile, the peripheral gap is reduced, and a space allowing pliers to be inserted is not easy to form, so that the difficulty of forcible unlocking is integrally improved, and the anti-theft effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of caravan locks, in particular to a trailer-type caravan lock. Background Art

[0002] A trailer RV is a subcategory of RVs. Unlike self-propelled RVs, trailer RVs lack their own power and require a tow vehicle to tow them. This means they need to be towed by an external vehicle. Therefore, these trailer RVs have a tow bar at the front of the vehicle, which connects to the tow bar and pulls the RV. To prevent others from towing these RVs, the tow bar has a locking mechanism to prevent other vehicles from connecting to the tow bar and towing the RV.

[0003] Currently, existing RV locks vary depending on the type of tow bar. A common tow bar structure is a tow ball cap, which relies on the cap to be attached to the ball rod of the tractor to achieve towing. The RV lock locks the cap to prevent the external vehicle from attaching and thus preventing the RV from being towed.

[0004] There are generally two types of RV locks available. One type has a ball inserted into the opening of the trailer's ball cover, and then a crossbar is installed to block the ball from disengaging. The other type has a baffle and ball, which are clamped together to lock the ball. Although both can prevent theft, the crossbar and baffle are very easy to cut with pliers or hit vertically, which can destroy the locking structure. Therefore, when the trailer is parked outdoors, it still does not provide better anti-theft protection. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a trailer-type caravan lock.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A trailer caravan lock includes a cover body and a lock core arranged on the cover body, the output shaft of the lock core is placed in the cover body, a locking column is hingedly installed in the cover body, a ball head is provided on the top of the locking column, and the output shaft of the lock core is installed with a limiting mechanism for inhibiting the rotation of the locking column. When the locking column is free from the inhibition of the limiting mechanism and rotates outward, there is space between the ball head and the cover mouth of the cover body to allow the trailer ball head cover to be inserted.

[0008] Preferably, the limiting mechanism includes a limiting block, which is connected to the output shaft of the lock core and rotates together with the output shaft of the lock core. The limiting block is provided with a top locking block protruding outward, and the bottom end of the locking column is provided with a receiving port for docking with the limiting block. The receiving port is provided with a notch for avoiding the top locking block. When the lock core is in an unlocked state, the top locking block is opposite to the notch. When the lock core is in a locked state, the top locking block is staggered with the notch, so that the locking column cannot rotate.

[0009] Preferably, at least the end face of the limit block or the lower end face of the locking column is provided with an avoidance position.

[0010] The locking mechanism may be actuated by a spring which is adapted to engage the locking element and to engage the locking element to release the locking element from the locking element, thereby releasing the locking element from the locking element.

[0011] Preferably, the end surface of the toggle block is an arc surface.

[0012] Preferably, a top surface of the locking block is provided with an inclined surface on a side close to the locking column.

[0013] Preferably, the cover body is cylindrical.

[0014] Due to the adoption of the above solution, the utility model uses the cover body to block the exposure of the trailer ball head cover, so that a closed loop is formed at the trailer ball head cover, which can improve the anti-knock ability and at the same time reduce the surrounding gap, making it difficult to form a space for pliers to be inserted, thereby making it more difficult to force unlocking as a whole, thereby achieving a stronger anti-theft effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0016] Figure 2 It is a structural schematic diagram of the back portion of an embodiment of the present utility model having a first limiting mechanism.

[0017] Figure 3 It is a structural schematic diagram of the back portion of an embodiment of the present utility model having a second limiting mechanism.

[0018] Figure 4 It is a structural diagram of the first limiting mechanism of an embodiment of the present utility model.

[0019] Figure 5 It is a structural diagram of the second limiting mechanism of an embodiment of the present utility model.

[0020] Figure 6 It is a cross-sectional view of the first limiting mechanism of the embodiment of the utility model.

[0021] Figure 7 It is a cross-sectional view of the second limiting mechanism of the embodiment of the present utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] like Figures 1 to 7 As shown, the present embodiment provides a trailer-type caravan lock, comprising a cover body 1 and a lock core 2 arranged on the cover body 1, the cover body 1 being cylindrical, the output shaft of the lock core 2 being placed in the cover body 1, a locking column 3 being hingedly installed in the cover body 1, a ball head 4 being provided at the top end of the locking column 3, the output shaft of the lock core 2 being provided with a limiting mechanism for inhibiting the rotation of the locking column 3, when the locking column 3 is out of the inhibition of the limiting mechanism and rotates outward, there is space between the ball head 4 and the cover opening of the cover body 1 for the trailer ball head cover 100 to be inserted.

[0026] This embodiment mainly uses the cover body 1 to block the exposure of the trailer ball head cover 100, so that a closed loop is formed at the trailer ball head cover 100, and a corresponding protective barrier is formed around it. Therefore, if an outsider hits it with a hammer, it can rely on the cover body 1 for protection, which can improve the anti-knock ability. Because the cover body 1 is in the form of a set, the peripheral gap can be reduced and the peripheral gap is smaller, which is not easy to form a space for pliers to insert. Even if pliers are inserted, they cannot be broken by cutting one side of the cover body 1. Only when the cover body 1 is completely destroyed and the cover body 1 and the ball head 4 are separated from the clamping of the trailer ball head cover 100 can the lock be broken, thereby making the difficulty of forced unlocking increased as a whole, so as to achieve the effect of strengthening the anti-theft effect.

[0027] When locking the vehicle, the lock cylinder 2 remains unlocked, and the locking post 3 is rotated open so that the space between the cover body 1 and the ball head 4 is just enough to allow one end of the trailer ball head cover 100 to be inserted. When the trailer ball head cover 100 is inserted, it must be inserted at a certain angle. When one end of the trailer ball head cover 100 is placed in the cover body 1, the locking post 3 can be rotated back, and then the lock cylinder 2 is locked. The locking post 3 cannot be rotated by the limit mechanism. At this time, the ball head 4 of the locking post 3 just touches the trailer. The inner cavity of the ball head cover 100 and the cover body 1 form a clamp for the trailer ball head cover 100. As long as the locking post 3 remains stationary, the trailer ball head cover 100 will not be able to detach, thus completing the locking. When unlocking is required, just use the key to change the lock cylinder 2 to the unlocked state. At this time, the limiting mechanism no longer limits the locking post 3, and the locking post 3 can be rotated immediately, thereby detaching from the clamping effect on the trailer ball head cover 100, and the trailer ball head cover 10 can be detached from the cover body 1.

[0028] Furthermore, there may be multiple specific structures of the limiting mechanism, of which two are specifically exemplified:

[0029] The first type includes a limit block 11, which is connected to the output shaft of the lock cylinder 2 and rotates together with the output shaft of the lock cylinder 2. The limit block 11 is provided with an outwardly protruding top lock block 12. The bottom end of the lock column 3 is provided with a receiving port 13 for docking with the limit block 11. The receiving port 13 is provided with a notch 14 for avoiding the top lock block 12. When the lock cylinder 2 is in the unlocked state, the top lock block 12 is directly opposite the notch 14. When the lock cylinder 2 is in the locked state, the top lock block 12 is staggered with the notch 14, so that the lock column 3 cannot rotate. Among them, at least the end face of the limit block 11 or the lower end face of the lock column 3 is provided with an avoidance position 15 to prevent the lock column 3 from being obstructed when rotating.

[0030] The second type: includes a latch block 21, a toggle block 22 and an active cavity 23 arranged inside the cover body 1, the toggle block 22 is connected to the output shaft of the lock cylinder 2 and rotates together with the output shaft of the lock cylinder 2, the latch block 21 is installed in the active cavity 23, a spring 24 is provided between the lower end of the latch block 21 and the bottom of the active cavity 23, the other end of the latch block 21 is provided with a socket 25, the toggle block 22 is placed in the socket 25, and under the action of the spring 24 Under the action of the present invention, the end face of the receiving port 25 is always in contact with the toggle block 22. The toggle block 22 is in the shape of an elongated strip. The bottom end of the locking column 3 is provided with a socket 26 near the end face of the locking block 21. When the toggle block 22 contacts the receiving port 25 with its long side, the locking block 21 is placed in the socket 26, so that the locking column 3 cannot rotate. When the toggle block 22 contacts the receiving port 25 with its short side, the locking block 21 is disengaged from the socket 26, so that the locking column 3 can rotate. In order to make it smoother for the lifting wave block to push the locking block 21, the end face of the toggle block 22 is an arc surface. In addition, in order to avoid obstruction between components, the top face of the locking block 21 is provided with an inclined surface on the side close to the locking column 3.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A trailer caravan lock, characterized by: The invention comprises a cover body (1) and a lock core (2) arranged on the cover body (1), wherein the output shaft of the lock core (2) is placed in the cover body (1), a locking column (3) is hingedly installed in the cover body (1), a ball head (4) is arranged at the top of the locking column (3), and the output shaft of the lock core (2) is equipped with a limiting mechanism for inhibiting the rotation of the locking column (3), and when the locking column (3) is freed from the inhibition of the limiting mechanism and rotates outward, a space is reserved between the ball head (4) and the cover opening of the cover body (1) to meet the requirements of the trailer ball head cover being inserted.

2. A trailer caravan lock according to claim 1, characterized in that: The limiting mechanism includes a limiting block (11), the limiting block (11) is connected to the output shaft of the lock core (2) and rotates together with the output shaft of the lock core (2), the limiting block (11) is provided with a top locking block (12) protruding outward, the bottom end of the locking column (3) is provided with a receiving port (13) for docking with the limiting block (11), the receiving port (13) is provided with a notch (14) for avoiding the top locking block (12), when the lock core (2) is in the unlocked state, the top locking block (12) is opposite to the notch (14), and when the lock core (2) is in the locked state, the top locking block (12) and the notch (14) are offset, so that the locking column (3) cannot rotate.

3. A trailer caravan lock according to claim 2, characterized in that: At least the end surface of the limit block (11) or the lower end surface of the locking column (3) is provided with an avoidance position (15).

4. The trailer caravan lock according to claim 1, characterized in that: The limiting mechanism comprises a locking block (21), a toggle block (22) and an active cavity (23) arranged inside the cover body (1), the toggle block (22) is connected to the output shaft of the lock core (2) and rotates together with the output shaft of the lock core (2), the locking block (21) is installed in the active cavity (23), a spring (24) is provided between the lower end of the locking block (21) and the cavity bottom of the active cavity (23), the other end of the locking block (21) is provided with a socket (25), the toggle block (22) is placed in the socket (25), and the spring (24) is provided between the lower end of the locking block (21) and the cavity bottom of the active cavity (23), and the toggle block (22) is placed in the socket (25). ), the end face of the receiving interface (25) is always in contact with the toggle block (22), the toggle block (22) is in a long strip shape, and the bottom end of the locking column (3) is provided with a socket (26) close to the end face of the locking block (21). When the toggle block (22) contacts the receiving interface (25) with its long side, the locking block (21) is placed in the socket (26), so that the locking column (3) cannot rotate. When the toggle block (22) contacts the receiving interface (25) with its short side, the locking block (21) is separated from the socket, so that the locking column (3) can rotate.

5. The trailer caravan lock according to claim 4, characterized in that: The end surface of the toggle block (22) is an arc surface.

6. The trailer caravan lock according to claim 5, characterized in that: The top end surface of the locking block (21) is provided with an inclined surface on a side close to the locking column (3).

7. The trailer caravan lock according to claim 1, characterized in that: The cover body (1) is cylindrical.

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