Anti-theft tow hook mechanism

Abstract

The utility model discloses an anti-theft tow hook mechanism which comprises a receiver, a tow hook assembly and a locking assembly. The tow hook assembly comprises a tow hook body and a limiting structure. A cavity with an opening facing the receiver is formed in the tow hook body, and the limiting structure is installed in the cavity. The locking assembly comprises a rotating lock, a mounting seat, a rotating spring and a rotating shaft; the bottom end of the rotating shaft penetrates through the tow hook body to be in meshed connection with the limiting structure, the top end of the rotating shaft penetrates through the mounting base to be fixedly connected with the rotating lock, and the rotating spring is located between the mounting base and the rotating lock and arranged on the rotating shaft in a sleeving mode. Rotation of the rotating shaft can be effectively controlled in the decoupling state and the coupling state, so that movement of a limiting structure in the tow hook assembly is limited, the purpose of preventing the tow hook body and the receiver from being connected or disengaged is achieved, the anti-theft function is achieved, and the anti-theft device has the advantages of being simple and easy to operate in anti-theft operation and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to an anti-theft trailer hook mechanism. Background Art

[0002] Trailer hook mechanisms are commonly used in people's daily production and life. Existing RV and trailer mechanisms generally use fixed ones or directly fixed with pins. Not only do they have disadvantages such as the trailer hook cannot be quickly installed and removed, there are abnormal sounds and loud noises during use, but they also have no anti-theft function, resulting in the trailer being lost. Utility Model Content

[0003] The utility model can solve the above problems existing in the existing trailer hook mechanism by providing an anti-theft trailer hook mechanism.

[0004] In order to solve the above technical problems, the utility model provides an anti-theft trailer hook mechanism, comprising:

[0005] Receiver;

[0006] A trailer hook assembly, the trailer hook assembly comprising a trailer hook body and a limiting structure, wherein the trailer hook body is detachably connected to the receiver; the trailer hook body is provided with a cavity with an opening facing the receiver, and the limiting structure is installed in the cavity;

[0007] The locking assembly includes a rotary lock, a mounting seat, a rotary spring and a rotary shaft; the bottom end of the rotary shaft passes through the trailer hook body and is meshed with the limiting structure, the top end of the rotary shaft passes through the mounting seat and is fixedly connected with the rotary lock, the rotary spring is located between the mounting seat and the rotary lock, and is sleeved on the rotary shaft.

[0008] In a preferred embodiment of the utility model, the rotating shaft is provided with a gear structure and a positioning pin, wherein the gear structure is sleeved on the bottom end of the rotating shaft and is meshedly connected with the limiting structure; the positioning pin is located between the gear structure and the mounting seat.

[0009] In a preferred embodiment of the present invention, the mounting seat includes a first annular groove and a second annular groove arranged concentrically, the second annular groove is located outside the bottom of the first annular groove, and the second annular groove has a notch.

[0010] In a preferred embodiment of the present invention, the inner diameter of the first annular groove is greater than the inner diameter of the second annular groove, and the inner diameter of the second annular groove is greater than or equal to the diameter of the rotating shaft.

[0011] In a preferred embodiment of the present invention, the rotary lock comprises a rotary handle and a rotary seat, the rotary handle and the rotary seat are integrally connected, and a lock core is installed in the rotary handle.

[0012] In a preferred embodiment of the present invention, the shape of the rotating seat is the same as that of the first annular groove, and the outer diameter of the rotating seat is equal to the inner diameter of the first annular groove.

[0013] In a preferred embodiment of the present invention, the limiting structure includes a limiting rod, and a rack is provided on the outer wall of one end of the limiting rod away from the receiver, and the rack is meshedly connected with the gear structure.

[0014] In a preferred embodiment of the present invention, the end of the limiting rod with the rack also has a blind hole, and a limiting spring is installed in the blind hole.

[0015] In a preferred embodiment of the present utility model, the limiting structure further includes a limiting pin, and the limiting rod is provided with a limiting hole that cooperates with the limiting pin.

[0016] In a preferred embodiment of the present invention, a handle is also installed at one end of the trailer hook body away from the receiver.

[0017] The beneficial effects of the utility model are as follows: the utility model provides an anti-theft trailer hook mechanism, which, through the design of a locking structure including a rotary lock, a mounting seat, a rotary spring and a rotary shaft, and a structural design of a locking structure meshingly connected with a limiting structure in a trailer hook assembly, can effectively control the rotation of the rotary shaft in a decoupled state and a coupled state, thereby limiting the movement of the limiting structure in the trailer hook assembly to prevent the trailer hook body from being connected to or disconnected from a receiver, thereby realizing an anti-theft function, and has the characteristics of simple and easy anti-theft operation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the exploded structure of a preferred embodiment of an anti-theft trailer hook mechanism of the utility model;

[0019] Figure 2 is a schematic diagram of the connection relationship between the trailer hook assembly and the locking assembly in the decoupled state;

[0020] Figure 3 It is a state diagram of the connection relationship between the trailer hook assembly and the locking assembly when the coupling device is used;

[0021] The markings of the components in the accompanying drawings are as follows:

[0022] 100. Receiver;

[0023] 200. trailer hook assembly, 210. trailer hook body, 220. limiting structure, 211. handle, 221. limiting rod, 222. limiting spring, 223. limiting pin, 2211. rack, 2212. limiting hole;

[0024] 300. Locking assembly, 310. Rotary lock, 320. Mounting seat, 330. Rotary spring, 340. Rotary shaft, 311. Rotary handle, 312. Rotary seat, 313. Dust cover, 314. Lock core, 315. Fixing screw, 321. First ring groove, 322. Second ring groove, 3221. Notch, 341. Gear structure, 342. Locating pin. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] See also Figure 1-3 , the utility model embodiment includes:

[0027] like Figure 1 As shown, the utility model discloses an anti-theft trailer hook mechanism, comprising: a receiver 100, a trailer hook assembly 200 and a locking assembly 300. The receiver 100 is installed on a vehicle, and the trailer hook assembly 200 is installed on a trailer.

[0028] Specifically, the trailer hook assembly 200 includes a trailer hook body 210 and a limiting structure 220. The trailer hook body 210 is detachably connected to the receiver 100, thereby achieving connection and disassembly of the trailer.

[0029] The trailer hook body 210 has a cavity for accommodating the limiting structure 220, and one end of the cavity facing the receiver 100 is an open end, and the other end is a closed end. A handle 211 is also installed at one end of the trailer hook body 210 away from the receiver 100.

[0030] The limiting structure 220 includes a limiting rod 221, a limiting spring 222 and a limiting pin 223. The limiting rod 221 has a rack 2211 on its outer wall at one end away from the receiver 100 (i.e., the closed end facing the cavity), and a blind hole is provided inside the rack 2211, and the limiting spring 222 extends into the blind hole of the limiting rod 221. The limiting rod 221 also has a limiting hole 2212, and the limiting pin 223 is installed in the limiting hole 2212.

[0031] When the trailer hook body 210 and the receiver 100 are connected (also called coupled), the limit spring 222 is in a contracted state, and the limit pin 223 is installed in the limit hole 2212; when the trailer hook body 210 and the receiver 100 are disconnected (also called decoupling), the limit spring 222 is in an extended state, and the limit pin 223 is pulled out of the limit hole 2212.

[0032] The locking assembly 300 includes a rotation lock 310 , a mounting seat 320 , a rotation spring 330 and a rotation shaft 340 .

[0033] Specifically, the rotary lock 310 includes a rotary handle 311, a rotary seat 312, a dust cover 313 and a lock core 314. The rotary handle 311 and the rotary seat 312 are integrally connected, the lock core 314 is tightly fixed in the rotary handle 311, and the dust cover 313 is covered on the rotary handle 311 and has a keyhole.

[0034] The rotating shaft 340 is provided with a gear structure 341 and a positioning pin 342 , wherein the gear structure 341 is sleeved on the bottom end of the rotating shaft 340 and can be meshed with the rack 2211 on the limiting rod 221 ; the positioning pin 342 is located on the rotating shaft 340 at the upper part of the gear structure 341 .

[0035] The mounting seat 320 includes a first annular groove 321 and a second annular groove 322 arranged concentrically, wherein the second annular groove 322 is located outside the bottom of the first annular groove 321, and the second annular groove 322 is provided with a notch 3221, and the notch 3221 is used to accommodate the positioning pin 342 of the rotating shaft 340 to limit the rotation of the rotating shaft 340. The inner diameter of the first annular groove 321 is larger than the inner diameter of the second annular groove 322. Specifically, the shape of the first annular groove 321 is the same as that of the rotating seat 312, and the inner diameter of the first annular groove 321 is equal to the outer diameter of the rotating seat 312. The inner diameter of the second annular groove 322 is equal to or slightly larger than the diameter of the rotating shaft 340, ensuring that the rotating shaft 340 can move up and down along the mounting seat 320.

[0036] A through hole 212 communicating with the internal cavity of the trailer hook body 210 is provided on the side wall thereof, and the bottom end of the rotating shaft 340 passes through the through hole 212 on the trailer hook body 210 so that the gear structure 341 thereon meshes with the rack 2211 on the limiting rod 221, thereby realizing the meshing connection between the rotating shaft 340 and the limiting rod 221.

[0037] The top end of the rotating shaft 340 passes through the second annular groove 322 and the first annular groove 321 of the mounting seat 320 in sequence, and is fixedly connected to the rotating lock 310 via a fixing screw 315, and the positioning pin 342 is located below the second annular groove 322. The rotating spring 330 is located in the first annular groove 321 of the mounting seat 320, and is sleeved on the rotating shaft 340 between the first annular groove 321 and the rotating seat 312 of the rotating lock 310.

[0038] The anti-theft method or principle of the anti-theft trailer hook mechanism of the utility model is as follows:

[0039] like Figure 2 As shown, when the anti-theft trailer hook mechanism is in a decoupled state (i.e., the trailer hook body 210 is separated from the receiver 100), the positioning pin 342 on the rotating shaft 340 is against the bottom of the mounting seat 320, specifically, below the second annular groove 322. At this time, the rotary lock 310 and the mounting seat 320 are in a fitted state, i.e., the rotary seat 312 of the rotary lock 320 is located in the first annular groove 321 of the mounting seat 320, the key cannot be turned, and the lock core 314 cannot be extended;

[0040] When coupling is required, even if the trailer hook body 210 is connected to the receiver 100, the limit rod 221 is pushed upward by the elastic force of the limit spring 222, and at the same time, the rack 2211 on the limit rod 221 drives the gear structure 341 on the rotating shaft 340 to rotate. After rotating to a certain angle, the rotating spring 330 is compressed, and the rotating shaft 340 moves upward, driving the positioning pin 342 on the rotating shaft 340 to return to the notch 3221 on the second annular groove 322, as shown in FIG. Figure 3 As shown, the rotating shaft 340 also starts to lift to a certain position, and the trailer hook body 210 is connected to the receiver 100. In this state, the lock cylinder 314 is rotated with a key to extend the lower end of the lock cylinder 314 to a certain distance until the lower end of the lock cylinder fits the mounting seat 320. In this state, the rotating shaft 340 cannot be pressed down. Under the restriction of the positioning pin 342, the rotating shaft 340 cannot rotate, so that the trailer hook body 210 cannot be separated from the receiver 100, that is, the coupling cannot be untied, which plays an anti-theft role.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anti-theft trailer hook mechanism, characterized in that: include: Receiver; A trailer hook assembly, the trailer hook assembly comprising a trailer hook body and a limiting structure, wherein the trailer hook body is detachably connected to the receiver; the trailer hook body is provided with a cavity with an opening facing the receiver, and the limiting structure is installed in the cavity; The locking assembly includes a rotary lock, a mounting seat, a rotary spring and a rotary shaft; the bottom end of the rotary shaft passes through the trailer hook body and is meshed with the limiting structure, the top end of the rotary shaft passes through the mounting seat and is fixedly connected with the rotary lock, the rotary spring is located between the mounting seat and the rotary lock, and is sleeved on the rotary shaft.

2. The anti-theft trailer hook mechanism according to claim 1, characterized in that: The rotating shaft is provided with a gear structure and a positioning pin, wherein the gear structure is sleeved on the bottom end of the rotating shaft and is meshedly connected with the limiting structure; and the positioning pin is located between the gear structure and the mounting seat.

3. The anti-theft trailer hook mechanism according to claim 2, characterized in that: The mounting seat comprises a first annular groove and a second annular groove which are arranged concentrically, wherein the second annular groove is located outside the bottom of the first annular groove and has a notch.

4. The anti-theft trailer hook mechanism according to claim 3, characterized in that: The inner diameter of the first annular groove is greater than the inner diameter of the second annular groove, and the inner diameter of the second annular groove is greater than or equal to the diameter of the rotating shaft.

5. The anti-theft trailer hook mechanism according to claim 4, characterized in that: The rotary lock comprises a rotary handle and a rotary seat, the rotary handle and the rotary seat are integrally connected, and a lock core is installed in the rotary handle.

6. The anti-theft trailer hook mechanism according to claim 5, characterized in that: The shape of the rotating seat is the same as that of the first annular groove, and the outer diameter of the rotating seat is equal to the inner diameter of the first annular groove.

7. The anti-theft trailer hook mechanism according to claim 2, characterized in that: The limiting structure comprises a limiting rod, and a rack is provided on the outer wall of one end of the limiting rod away from the receiver, and the rack is meshedly connected with the gear structure.

8. The anti-theft trailer hook mechanism according to claim 7, characterized in that: The end of the limiting rod with the rack is also provided with a blind hole, in which a limiting spring is installed.

9. The anti-theft trailer hook mechanism according to claim 8, characterized in that: The limiting structure also includes a limiting pin, and the limiting rod is provided with a limiting hole matched with the limiting pin.

10. An anti-theft trailer hook mechanism according to any one of claims 1 to 9, characterized in that: A handle is also installed at one end of the trailer hook body away from the receiver.

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