Anti-loosening rear trailer hook nut tube

Abstract

The utility model discloses an anti-loosening rear trailer hook nut tube, and relates to the technical field of rear trailer hook equipment, according to the anti-loosening rear trailer hook nut tube, a nut tube main body is in threaded connection with a connecting threaded rod, so that the connecting threaded rod is tightly attached to a shock pad, and the elasticity of the shock pad is improved in cooperation with a spherical cavity; the extrusion strength and friction strength of the anti-skid grooves are enhanced, meanwhile, vibration force conducted by the outside is absorbed and consumed to a certain degree, and the shock resistance of the rear trailer hook nut pipe connecting structure is improved advantageously, and the nut pipe body is in threaded connection with the connecting threaded rod, so that the annular clamping groove and the movable cavity are aligned to each other; the limiting block is driven to move into the annular clamping groove through the elastic deformation capacity of the spring, so that locking of the rear tow hook nut pipe connecting structure is completed, the limiting block can be driven to be away from the annular clamping groove by pulling the pull ring when locking is released, operation is convenient and fast, and practicability is high. And the situation that the nut pipe connecting structure of the rear trailer hook is loosened can be completely avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rear trailer hitch devices, and particularly relates to an anti-loosening rear trailer hitch nut tube. Background Technique

[0002] The rear trailer hitch is applied to various off-road vehicle models, and its main function is to provide traction to assist the trapped vehicle to get out of trouble. When the vehicle encounters complex road conditions such as mud and sand in the wild and is difficult to drive out by itself, the front vehicle can pull the rear vehicle out of the predicament through the trailer hitch installed on the bumper to achieve self-rescue or mutual rescue. The rear trailer hitch nut tube is an important component of the rear trailer hitch.

[0003] The stability of the connection of the existing rear trailer hitch nut tube has certain limitations. After long-term use, due to the vibration transmitted from the outside, the connection of the rear trailer hitch nut tube is likely to become loose. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides an anti-loosening rear trailer hitch nut tube to solve the problem that the stability of the connection of the existing rear trailer hitch nut tube has certain limitations, and after long-term use, due to the vibration transmitted from the outside, the connection of the rear trailer hitch nut tube is likely to become loose as mentioned in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: an anti-loosening rear trailer hitch nut tube, including a nut tube main body and a connecting threaded rod. A clamping groove is opened on the upper side inside the nut tube main body, a shock-absorbing pad is fixedly installed at the upper end of the clamping groove, a spherical cavity is opened inside the shock-absorbing pad, an annular clamping groove is opened on the upper side of the surface of the connecting threaded rod, a movable cavity is opened on the side of the nut tube main body inside the clamping groove, a limiting block is arranged inside the movable cavity, a connecting rod is fixedly installed on the limiting block, and a spring is sleeved on the surface of the connecting rod.

[0006] Preferably, the surfaces of the nut tube main body and the connecting threaded rod are both sprayed with an anti-corrosion coating, and the nut tube main body is threadedly connected with the connecting threaded rod.

[0007] Preferably, the shock-absorbing pad is designed in an annular structure and is in fit connection with the connecting threaded rod.

[0008] Preferably, the spherical cavities are distributed in an annular array, and anti-slip grooves are opened at the upper end of the shock-absorbing pad.

[0009] Preferably, the end of the limiting block away from the connecting rod is mutually adapted to the annular clamping groove, and the limiting block is slidably connected with the movable cavity.

[0010] Preferably, one end of the spring is fixedly connected to the limit block, and the other end of the spring is fixedly connected to the nut tube body.

[0011] Preferably, one end of the connecting rod away from the limit block extends to the outside of the nut tube body and is fixedly installed with a pull ring, and the connecting rod is slidably connected to the nut tube body.

[0012] Beneficial effects

[0013] The present utility model provides an anti-loosening rear trailer hook nut tube. Compared with the prior art, it has the following

[0014] Beneficial effects:

[0015] 1. For this anti-loosening rear trailer hook nut tube, first, the nut tube body and the connecting threaded rod are threadedly connected, so that the connecting threaded rod closely fits the shock pad, and the spherical cavity is used to improve the deformation elasticity of the shock pad, enhance the extrusion force and friction force of the anti-slip groove, and at the same time absorb and consume the vibration force transmitted from the outside to a certain extent, which is beneficial to improving the seismic resistance of the connection structure of the rear trailer hook nut tube.

[0016] 2. For this anti-loosening rear trailer hook nut tube, through the threaded connection between the nut tube body and the connecting threaded rod, the annular card slot and the movable cavity are aligned with each other. By using the elastic deformation ability of the spring itself, the limit block is driven to move into the annular card slot, thereby completing the locking of the connection structure of the rear trailer hook nut tube. When unlocking, the limit block can be driven to move away from the annular card slot by pulling the pull ring. The operation is convenient, and it is beneficial to completely avoid the loosening of the connection structure of the rear trailer hook nut tube. Description of the drawings

[0017] Figure 1 It is a three-dimensional structural diagram of the present utility model;

[0018] Figure 2 It is a scraper structural diagram of the present utility model;

[0019] Figure 3 It is a scraper structural diagram of the present utility model;

[0020] Figure 4 It is a structural diagram of the present utility model.

[0021] In the figure: 1. Nut tube body; 2. Connecting threaded rod; 3. Engaging groove; 4. Shock pad; 5. Spherical cavity; 6. Annular card slot; 7. Movable cavity; 8. Limit block; 9. Connecting rod; 10. Spring; 11. Anti-slip groove; 12. Pull ring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution: an anti-loosening rear trailer hook nut tube, which includes a nut tube body 1 and a connecting threaded rod 2. An engaging groove 3 is opened on the upper side inside the nut tube body 1. A shock pad 4 is fixedly installed at the upper end of the engaging groove 3. A spherical cavity 5 is opened inside the shock pad 4. Anti-corrosion coatings are sprayed on the surfaces of the nut tube body 1 and the connecting threaded rod 2. The nut tube body 1 is threadedly connected to the connecting threaded rod 2. The shock pad 4 is designed in an annular structure and is in close contact with the connecting threaded rod 2. The spherical cavities 5 are distributed in an annular array. Anti-slip grooves 11 are opened at the upper end of the shock pad 4. First, the nut tube body 1 and the connecting threaded rod 2 are threadedly connected, so that the connecting threaded rod 2 is in close contact with the shock pad 4, and the deformation elasticity of the shock pad 4 is improved in cooperation with the spherical cavity 5, enhancing the extrusion force and friction force of the anti-slip groove 11. At the same time, to a certain extent, the vibration force transmitted from the outside is absorbed and consumed, which is beneficial to improving the seismic resistance of the connection structure of the rear trailer hook nut tube.

[0024] An annular clamping groove 6 is opened on the upper side of the surface of the connecting threaded rod 2. An activity cavity 7 is opened on the side of the inside of the nut tube body 1 where the engaging groove 3 is located. A limiting block 8 is arranged inside the activity cavity 7. A connecting rod 9 is fixedly installed on the limiting block 8. A spring 10 is sleeved on the surface of the connecting rod 9. One end of the limiting block 8 away from the connecting rod 9 is adapted to the annular clamping groove 6. The limiting block 8 is slidably connected to the activity cavity 7. One end of the spring 10 is fixedly connected to the limiting block 8, and the other end of the spring 10 is fixedly connected to the nut tube body 1. One end of the connecting rod 9 away from the limiting block 8 extends to the outside of the nut tube body 1 and is fixedly installed with a pull ring 12. The connecting rod 9 is slidably connected to the nut tube body 1. Through the threaded connection of the nut tube body 1 and the connecting threaded rod 2, the annular clamping groove 6 and the activity cavity 7 are aligned with each other. By using the elastic deformation ability of the spring 10 itself, the limiting block 8 is driven to move into the annular clamping groove 6, thereby completing the locking of the connection structure of the rear trailer hook nut tube. When unlocking, the pull ring 12 can be pulled to drive the limiting block 8 away from the annular clamping groove 6. The operation is convenient and is beneficial to completely avoiding the loosening of the connection structure of the rear trailer hook nut tube.

[0025] During operation, first thread the nut tube body 1 and the connecting threaded rod 2 together, so that the connecting threaded rod 2 fits tightly against the shock pad 4, and the spherical cavity 5 is used to improve the deformation elasticity of the shock pad 4, enhance the extrusion force and friction force of the anti-slip groove 11, and at the same time absorb and consume the vibration force transmitted from the outside to a certain extent. By threading the nut tube body 1 and the connecting threaded rod 2 together, the annular card slot 6 and the movable cavity 7 are aligned with each other. Using the elastic deformation ability of the spring 10, the limiting block 8 is driven to move into the annular card slot 6, thus completing the locking of the rear trailer hook nut tube connection structure. When unlocking, the limiting block 8 can be driven to move away from the annular card slot 6 by pulling the pull ring 12, and the operation is convenient.

[0026] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A rear trailer hook nut tube that prevents loosening, comprising a nut tube body (1) and a connecting threaded rod (2), characterized in that: The upper side of the nut tube body (1) is provided with a snap-fit ​​groove (3), the upper end of the snap-fit ​​groove (3) is fixedly mounted with a shock-absorbing pad (4), the interior of the shock-absorbing pad (4) is provided with a spherical cavity (5), the upper side of the surface of the connecting threaded rod (2) is provided with an annular snap-fit ​​groove (6), the interior of the nut tube body (1) is provided with a movable cavity (7) located on the side of the snap-fit ​​groove (3), a limit block (8) is arranged inside the movable cavity (7), a connecting rod (9) is fixedly mounted on the limit block (8), and a spring (10) is sleeved on the surface of the connecting rod (9).

2. The anti-loosening rear trailer hook nut tube according to claim 1, characterized in that: The surfaces of the nut tube body (1) and the connecting threaded rod (2) are sprayed with an anti-corrosion coating, and the nut tube body (1) is threadedly connected to the connecting threaded rod (2).

3. The anti-loosening rear trailer hook nut tube according to claim 2, characterized in that: The shock-absorbing pad (4) is designed to be annular in structure, and the shock-absorbing pad (4) is closely connected to the connecting threaded rod (2).

4. The anti-loosening rear trailer hook nut tube according to claim 3, characterized in that: The spherical cavities (5) are distributed in a ring array, and an anti-slip groove (11) is provided at the upper end of the shock-absorbing pad (4).

5. The anti-loosening rear trailer hook nut tube according to claim 1, characterized in that: One end of the limit block (8) away from the connecting rod (9) is mutually adapted with the annular groove (6), and the limit block (8) is slidably connected with the movable cavity (7).

6. The anti-loosening rear trailer hook nut tube according to claim 5, characterized in that: One end of the spring (10) is fixedly connected to the limit block (8), and the other end of the spring (10) is fixedly connected to the nut tube body (1).

7. The anti-loosening rear trailer hook nut tube according to claim 6, characterized in that: One end of the connecting rod (9) away from the limiting block (8) extends to the outside of the nut tube body (1) and is fixedly mounted with a pull ring (12), and the connecting rod (9) is slidably connected to the nut tube body (1).

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