Automobile part connecting universal shaft capable of being rapidly locked and preventing looseness
By using carbon fiber reinforced aluminum alloy composite material and nano-ceramic coating on the universal joint, combined with nylon ring and dust cover design, the adaptability of the universal joint in extreme environments has been solved, achieving anti-loosening and protective effects, extending service life and improving safety and operation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HUATE AUTOMOTIVE CLUTCH CO
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-01
AI Technical Summary
Existing automotive universal joints have poor adaptability to extreme environments, resulting in shortened service life, increased maintenance costs, and low safety and practicality.
The universal joint body is made of carbon fiber reinforced aluminum alloy composite material and nano-ceramic coating. It is combined with nylon ring and dust cover design. The nylon ring and the bolt thread are squeezed to generate additional friction to prevent loosening, and the dust cover prevents impurities from entering and extends service life.
It improves the adaptability and anti-loosening effect of the universal joint, extends its service life, reduces maintenance costs, and enhances safety and handling performance.
Smart Images

Figure CN224187919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive universal joint technology, specifically a quick-locking and anti-loosening automotive component universal joint. Background Technology
[0002] As an important means of transportation in modern society, the performance of the transmission system of automobiles is directly related to the safety, stability and reliability of the whole vehicle. As a key component of the automobile transmission system, the universal joint is responsible for efficiently transmitting the engine power to the drive wheels under different angles and relative position changes.
[0003] Existing automotive universal joints have poor adaptability. In some extreme environments, they may have a shorter service life, increased maintenance costs, reduced safety, and low practicality. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this invention is to provide a quick-locking and anti-loosening universal joint for connecting automotive parts, in order to solve the problem of poor adaptability of automotive universal joints mentioned in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-locking and anti-loosening universal joint for automotive parts, comprising a universal joint body, dust covers and a connecting mechanism, wherein dust covers are fitted on both sides of the outer end of the universal joint body, a connecting mechanism is fixedly provided at the inner end of the universal joint body, and an auxiliary mechanism is fixedly provided at the outer end of the universal joint body.
[0008] The connecting mechanism includes a carbon fiber reinforced aluminum alloy composite material layer, a nano-ceramic coating, a connecting flange, connecting holes, and nylon rings. The inner end of the universal joint body is fixedly provided with the carbon fiber reinforced aluminum alloy composite material layer, and the outer end of the universal joint body is fixedly provided with the nano-ceramic coating. Connecting flanges are provided on both sides of the universal joint body. Several connecting holes are evenly distributed on the inner end of each connecting flange, and nylon rings are fixedly provided on the inner end of each connecting hole. The main material of the universal joint is carbon fiber reinforced aluminum alloy composite material, which reduces weight by 40% compared to traditional steel while maintaining the same strength. This helps to achieve lightweighting of automobiles, improve fuel economy and acceleration performance, and also improves vehicle handling and safety. The nano-ceramic coating on the surface of the universal joint further enhances wear resistance and corrosion resistance, allowing it to adapt to extreme environments and ensuring product quality. The connecting holes in the connecting flanges are equipped with nylon rings. When using bolts for installation, the nylon rings and bolt threads squeeze against each other, generating additional friction, which effectively prevents loosening. Installation is simple and quick.
[0009] Preferably, the auxiliary mechanism includes a drive shaft, a universal joint fork one, a needle roller bearing, a cross shaft, a universal joint fork two, a connecting groove, and a clamp. The drive shaft is located in the middle of the universal joint body, which improves practicality.
[0010] Preferably, universal joint forks are fixedly provided on both sides of the drive shaft, and needle roller bearings are fixedly provided on the inner ends of the universal joint forks, which helps to reduce the friction of the needle roller bearings, making the rotation smoother and improving the rotation accuracy and stability.
[0011] Preferably, the inner end of the needle roller bearing is movably provided with a cross shaft, and the outer end of the cross shaft is provided with a universal joint fork on the side near the connecting flange, which facilitates the transmission of variable angle power.
[0012] Preferably, the universal joint fork two is fixedly connected to the connecting flange, and the outer end of the drive shaft has a connecting groove on the side near the universal joint fork one, which meets the usage requirements.
[0013] Preferably, a clamp is fixedly provided on one side of the dust cover. The clamp is adapted to the connecting groove and the clamp is movably connected to the connecting groove, which facilitates the installation of the dust cover, prevents dust, mud and other impurities from entering the universal joint connection, avoids impurities from causing wear and corrosion to components such as needle roller bearings, and extends the service life of the universal joint.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This quick-locking and anti-loosening automotive component connecting universal joint, through the setting of a connecting mechanism, facilitates the adaptability of the automotive universal joint, can adapt to extreme environments, extends the service life of the universal joint, saves maintenance costs, and improves the anti-loosening effect and safety by setting a nylon ring;
[0016] 2. This quick-locking, anti-loosening automotive component connecting universal joint, through the setting of an auxiliary mechanism, facilitates the installation of a dust cover to prevent dust, mud, water, and other impurities from entering the universal joint connection, avoiding wear and corrosion of components such as needle roller bearings caused by impurities, and extending the service life of the universal joint. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a partial structural diagram of the auxiliary mechanism of this utility model;
[0019] Figure 3 This is a schematic cross-sectional view of the present invention.
[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram of a local detail.
[0021] In the diagram: 1. Universal joint body; 2. Dust cover; 3. Connecting mechanism; 301. Carbon fiber reinforced aluminum alloy composite material layer; 302. Nano-ceramic coating; 303. Connecting flange; 304. Connecting hole; 305. Nylon ring; 4. Auxiliary mechanism; 401. Drive shaft; 402. Universal joint fork one; 403. Needle roller bearing; 404. Cross shaft; 405. Universal joint fork two; 406. Connecting groove; 407. Clamp. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 This utility model provides a technical solution: a quick-locking and anti-loosening automotive component connecting universal joint, including a universal joint body 1, a dust cover 2 and a connecting mechanism 3. The dust cover 2 is sleeved on both sides of the outer end of the universal joint body 1, the connecting mechanism 3 is fixedly installed on the inner end of the universal joint body 1, and the auxiliary mechanism 4 is fixedly installed on the outer end of the universal joint body 1.
[0024] The connecting mechanism 3 includes a carbon fiber reinforced aluminum alloy composite material layer 301, a nano-ceramic coating 302, a connecting flange 303, connecting holes 304, and a nylon ring 305. The inner end of the universal shaft body 1 is fixedly provided with the carbon fiber reinforced aluminum alloy composite material layer 301, and the outer end of the universal shaft body 1 is fixedly provided with the nano-ceramic coating 302. Connecting flanges 303 are provided on both sides of the universal shaft body 1. A plurality of connecting holes 304 are evenly opened on the inner end of the connecting flanges 303, and a nylon ring 305 is fixedly provided on the inner end of each connecting hole 304. The main... The material used in its manufacture is carbon fiber reinforced aluminum alloy composite material, which reduces weight by 40% compared to traditional steel while maintaining the same strength. The surface of the universal joint body 1 is further coated with a nano-ceramic coating 302 to further improve wear resistance and corrosion resistance, enabling it to adapt to extreme environments, further extending its service life, and ensuring product quality. The connecting hole 304 in the connecting flange 303 is equipped with a nylon ring 305. When using bolts for installation, the nylon ring 305 and the bolt threads squeeze against each other, generating additional friction, which can effectively prevent the connection from loosening. The installation process is simple and quick.
[0025] Auxiliary mechanism 4 includes a drive shaft 401, a first universal joint fork 402, a needle roller bearing 403, a cross shaft 404, a second universal joint fork 405, a connecting groove 406, and a clamp 407. The drive shaft 401 is located in the middle of the universal shaft body 1. The first universal joint fork 402 is fixedly mounted on both sides of the drive shaft 401. A needle roller bearing 403 is fixedly mounted on the inner end of the first universal joint fork 402. A cross shaft 404 is movably mounted on the inner end of the needle roller bearing 403. A second universal joint fork 405 is located on the outer end of the cross shaft 404 near the connecting flange 303. The second universal joint fork 405 is fixedly connected to the connecting flange 303. The drive shaft 401... A connecting groove 406 is provided on the outer end near the universal joint fork 402. A clamp 407 is fixedly provided on one side of the dust cover 2. The clamp 407 is adapted to the connecting groove 406 and the clamp 407 is movably connected to the connecting groove 406. The dust cover 2 is fitted into the connecting groove 406 through the clamp 407, so that the dust cover 2 is located at the universal joint fork 402. It can be used to prevent dust, mud and other impurities from entering the universal joint connection, and avoid impurities from causing wear and corrosion to components such as the needle roller bearing 403, thereby extending the service life of the universal shaft body 1. The dust cover 2 is generally made of rubber or plastic and has good flexibility and sealing performance.
[0026] Working principle: When using automotive parts to connect the universal joint, the operator first installs the universal joint body 1. During installation, the dust cover 2 is placed inside the connecting groove 406 using the clamp 407, positioning it at the universal joint fork 402. This prevents dust, mud, and other impurities from entering the universal joint connection, avoiding wear and corrosion to components such as the needle roller bearing 403, thus extending the service life of the universal joint body 1. The dust cover 2 is generally made of rubber or plastic, possessing good flexibility and sealing properties. The main material is carbon fiber reinforced aluminum alloy composite material, which reduces weight by 40% compared to traditional steel while maintaining the same strength. The surface of the universal joint body 1 is coated with a nano-ceramic coating 302 to further improve wear resistance and corrosion resistance, making it adaptable to extreme environments, further extending its service life and ensuring product quality. The connecting hole 304 in the connecting flange 303 is equipped with a nylon ring 305. When using bolts for installation, the nylon ring 305 and the bolt threads squeeze against each other, generating additional friction, which can effectively prevent the connection from loosening. The installation process is simple and quick.
[0027] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A quick-locking, anti-loosening universal shaft for connecting automobile parts, comprising a universal shaft body (1), a dust cover (2) and a connecting mechanism (3), characterized in that: Dustproof sleeves (2) are fitted on both sides of the outer end of the universal shaft body (1), a connecting mechanism (3) is fixedly installed on the inner end of the universal shaft body (1), and an auxiliary mechanism (4) is fixedly installed on the outer end of the universal shaft body (1). The connecting mechanism (3) includes a carbon fiber reinforced aluminum alloy composite material layer (301), a nano-ceramic coating (302), a connecting flange (303), a connecting hole (304), and a nylon ring (305). The inner end of the universal shaft body (1) is fixedly provided with a carbon fiber reinforced aluminum alloy composite material layer (301), the outer end of the universal shaft body (1) is fixedly provided with a nano-ceramic coating (302), the two sides of the universal shaft body (1) are provided with connecting flanges (303), the inner end of the connecting flange (303) is evenly provided with a plurality of connecting holes (304), and the inner end of the connecting hole (304) is fixedly provided with a nylon ring (305).
2. The quick locking anti-loose automobile parts connecting universal shaft according to claim 1, characterized in that: The auxiliary mechanism (4) includes a drive shaft (401), a universal joint fork one (402), a needle roller bearing (403), a cross shaft (404), a universal joint fork two (405), a connecting groove (406), and a clamp (407). The drive shaft (401) is provided in the middle of the universal shaft body (1).
3. A quick-locking and anti-loosening universal joint for automotive parts as described in claim 2, characterized in that: Universal joint forks (402) are fixedly installed on both sides of the drive shaft (401), and needle roller bearings (403) are fixedly installed on the inner end of the universal joint forks (402).
4. A quick-locking and anti-loosening universal joint for automotive parts as described in claim 3, characterized in that: The inner end of the needle roller bearing (403) is movably provided with a cross shaft (404), and the outer end of the cross shaft (404) is provided with a universal joint fork (405) on the side near the connecting flange (303).
5. A quick-locking and anti-loosening universal joint for automotive parts as described in claim 4, characterized in that: The universal joint fork two (405) is fixedly connected to the connecting flange (303), and the outer end of the drive shaft (401) has a connecting groove (406) on the side near the universal joint fork one (402).
6. A quick-locking and anti-loosening universal joint for automotive parts as described in claim 5, characterized in that: A clamp (407) is fixedly provided on one side of the dust cover (2). The clamp (407) is adapted to the connecting groove (406) and the clamp (407) is movably connected to the connecting groove (406).