Automobile towing hook anti-theft device
By designing an anti-theft device for the car traction hook including elbow pins, springs, retaining rings, flat head screws and special special-shaped wrench, the existing anti-theft lock is prone to rust, the lock hole cannot unlock the lock when entering the sand, and the abnormal noise is achieved, and efficient anti-theft function and stable operation are achieved.
Patent Information
- Application Number
- CN202421736252.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing car traction hook anti-theft lock is prone to rust, the lock hole enters sand and cannot be unlocked, and vibrations are caused by abnormal noise when driving, which is easily damaged.
An anti-theft device for the automobile traction hook including an elbow pin, a spring, a retaining ring, a flat head screw and a special special-shaped wrench is designed. The elbow latch is made of round steel, equipped with a spring and a retaining ring, and is fixed by flat head screws to ensure that the device does not cause abnormal noise when driving.
It effectively solves the problem that the anti-theft lock is prone to rust and the lock hole cannot be unlocked when entering sand. At the same time, the circular retaining ring can rotate and is not easily damaged. The screw is located in the center hole of the retaining ring and must be disassembled with a special wrench. It has anti-theft function. The spring tensions the latch and will not cause abnormal noise when driving.
Smart Images
Figure CN222769210U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-theft products, in particular to an anti-theft device for a car towing hook. Background Art
[0002] At present, the cost of anti-theft locks for automobile towing hooks in the market is relatively high. The key is that cars are often parked outdoors, and anti-theft locks are easily rusted by water and cannot be opened, or sand enters the lock hole and the key cannot be inserted. In addition, anti-theft locks will produce abnormal noises due to vibration when the vehicle is driving, and it is easy to be violently opened. Therefore, there is a need for improvement. Utility Model Content
[0003] The main purpose of the utility model is to provide an anti-theft device for a vehicle towing hook so as to effectively solve the problems raised in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-theft device for a car towing hook, comprising an elbow pin, a spring, a retaining ring, a flat head screw, and a special special-shaped wrench; the elbow pin is made of round steel, one end of which is bent and the other end is a straight rod, a spring is sleeved on the straight rod, a stepped shaft with a diameter smaller than the diameter of the straight rod of the elbow pin is provided at the end of the straight rod, a threaded hole is provided in the center of the stepped shaft, the retaining ring is sleeved on the outside of the stepped shaft, the inner hole of the retaining ring has a chamfer, and the retaining ring is fixed to the stepped shaft at the end of the straight rod of the elbow pin with a flat head screw.
[0005] Preferably, the inner hole of the retaining ring and the stepped shaft of the elbow pin are clearance-fitted.
[0006] Preferably, the diameter of the retaining ring is larger than the diameter of the spring.
[0007] Preferably, after the flat head screw is tightened, the flat surface of the screw head does not exceed the outer surface of the retaining ring.
[0008] Preferably, the central pit on the big head of the flat head screw is a special-shaped pit, which is compatible with the special special-shaped wrench.
[0009] Preferably, the elbow plug is provided with a jackscrew for tightening the flat head screw.
[0010] Preferably, the elbow latch is further provided with a through hole with a through diameter in the spring section, and a steel ball pin is inserted in the through hole.
[0011] The beneficial effects of the utility model are as follows: the problems of the existing anti-theft lock being easy to rust and the lock hole being unable to be unlocked due to sand entering therein are solved; at the same time, the circular retaining ring can be rotated and is not easily damaged; the screw is located in the center hole of the retaining ring and can only be disassembled with a special wrench, thus having an anti-theft function; the spring tightens the latch pin and no abnormal noise is generated during driving. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attached Figure 1 It is a cross-sectional view of the structure of the utility model.
[0013] Attached Figure 2 This is a schematic diagram of the big head structure of the screw of the utility model.
[0014] Attached Figure 3 It is a schematic diagram of the structure of the steel ball pin of the utility model.
[0015] Attached Figure 1 —3, spring 1, retaining ring 2, flat head screw 3, traction hook 4, elbow latch 5, automobile rear beam 6, special-shaped pit 7, top screw 8, steel ball pin 9. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0017] Example 1
[0018] Attached Figure 1 , 2 As shown in the figure, an anti-theft device for a car towing hook includes an elbow pin, a spring, a retaining ring, a flat head screw, and a special special-shaped wrench; the elbow pin 5 is made of round steel, one end of which is bent and the other end is a straight rod, the straight rod is inserted into the prefabricated hole of the towing hook 4 and the rear beam 6 of the car to connect the two, a spring 1 is sleeved on the straight rod, a step shaft with a diameter smaller than the diameter of the straight rod of the elbow pin is provided at the end of the straight rod, a threaded hole is provided in the center of the step shaft, the retaining ring 2 is sleeved on the outside of the step shaft, the inner hole of the retaining ring 2 has a chamfer, and the retaining ring 2 is fixed to the step shaft at the end of the straight rod of the elbow pin with a flat head screw 3.
[0019] The inner hole of the retaining ring 2 and the stepped shaft of the elbow plug pin 5 are clearance-matched.
[0020] The diameter of the retaining ring 2 is greater than the diameter of the spring 1 .
[0021] After the flat head screw 3 is tightened, the flat surface of the screw head does not exceed the outer surface of the retaining ring 2.
[0022] The central pit on the large head of the flat head screw 3 is a special-shaped pit 7, which is adapted to the special special-shaped wrench.
[0023] The elbow plug 5 is provided with a jackscrew 8 for tightening the flat head screw 3 .
[0024] Preferably, the elbow latch 5 is further provided with a through hole with a through diameter in the spring section, and a steel ball pin 9 is inserted in the through hole.
[0025] The beneficial effects of the utility model are as follows: it solves the problems of the existing anti-theft lock being easy to rust and the lock hole being unable to be unlocked due to sand entering therein; at the same time, the circular retaining ring can rotate and is not easily damaged; the screw is located in the center hole of the retaining ring and can only be disassembled with a special wrench, thus having an anti-theft function; the spring tightens the latch pin and no abnormal noise is generated during driving.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An anti-theft device for a vehicle towing hook, characterized in that: It includes an elbow pin, a spring, a retaining ring, a flat head screw, and a special special-shaped wrench; the elbow pin is made of round steel, one end of which is bent and the other end is a straight rod, a spring is sleeved on the straight rod, a step shaft with a diameter smaller than the diameter of the elbow pin straight rod is arranged at the end of the straight rod, a threaded hole is arranged at the center of the step shaft, the retaining ring is sleeved on the outside of the step shaft, the inner hole of the retaining ring has a chamfer, and the retaining ring is fixed to the step shaft at the end of the elbow pin straight rod by a flat head screw.
2. The anti-theft device for a vehicle towing hook according to claim 1, characterized in that: The inner hole of the retaining ring and the stepped shaft of the elbow plug pin are clearance-matched.
3. The anti-theft device for a vehicle towing hook according to claim 1, characterized in that: The diameter of the retaining ring is greater than the diameter of the spring.
4. The anti-theft device for a vehicle towing hook according to claim 1, characterized in that: After the flat head screw is tightened, the flat surface of the screw head does not exceed the outer surface of the retaining ring.
5. The anti-theft device for automobile towing hook according to claim 1, characterized in that: The central pit on the big head of the flat head screw is a special-shaped pit, which is compatible with the special special-shaped wrench.
6. The anti-theft device for a vehicle towing hook according to claim 1, characterized in that: The elbow plug is provided with a jackscrew for tightening the flat head screw.
7. The anti-theft device for a vehicle towing hook according to claim 1, characterized in that: The elbow latch is also provided with a through hole with a through diameter at the spring section, and a steel ball pin is inserted in the through hole.