Universal spherical hinge and protection device thereof

Abstract

The utility model relates to the technical field of universal spherical hinges, in particular to a universal spherical hinge and a protection device thereof. The universal spherical hinge comprises a core shaft, a ball seat and an installation seat used for being connected with an automobile chassis, the core shaft comprises a ball core, an upper shaft body and a lower shaft body, the upper shaft body and the lower shaft body are coaxially arranged at the upper end and the lower end of the ball core, and the ball core and the ball seat are both installed in the installation seat. The ball seat is coaxially arranged outside the ball core in a sleeving mode and abuts against the ball core, and the ball seat abuts against the inner wall of the installation seat. The protection device comprises an upper dustproof sleeve and a lower dustproof sleeve which are arranged outside the universal spherical hinge in a sleeving mode and arranged at the upper end and the lower end of the universal spherical hinge respectively. The universal spherical hinge has the advantages that the problem that the universal spherical hinge is prone to being influenced by dust on the road surface is solved, and the stability of power transmission is improved.

Description

Technical Field

[0001] The present application relates to the technical field of universal ball joints, and in particular to a universal ball joint and a protective device thereof. Background Art

[0002] Universal ball joints, also known as universal joints or universal couplings, are mechanical parts that are widely used in various engineering machinery, automobiles, aerospace and other occasions that require torque transmission and power transmission. Its main function is to allow a certain angular displacement between the two connected shafts while transmitting torque, so as to adapt to complex and changing working environments.

[0003] In the related technology, universal ball joints are widely used in the connection between the transmission shaft and the drive axle of the automobile, as well as the connection between the engine and the transmission. The universal ball joint is installed at the chassis suspension of the automobile, so as to effectively transmit the torque, and at the same time adapt to various angular displacements generated during the driving process of the vehicle, ensuring the stability and reliability of power transmission.

[0004] Regarding the above-mentioned related technologies, dust will inevitably exist on the road surface, and the dust will be raised during the driving of the car. The chassis suspension is close to the road surface and is easily affected by the dust. If the dust enters the universal ball joint, it will affect the use of the universal ball joint and even reduce the stability of power transmission. Utility Model Content

[0005] In order to improve the problem that the universal ball joint is easily affected by road dust and to improve the stability of power transmission, the present application provides a universal ball joint and a protective device thereof.

[0006] In the first aspect, the present application provides a universal ball joint, which adopts the following technical solution:

[0007] A universal ball joint comprises a core shaft, a ball seat and a mounting seat for connecting to a car chassis, wherein the core shaft comprises a ball core and an upper shaft body and a lower shaft body coaxially arranged at the upper and lower ends of the ball core, the ball core and the ball seat are both installed in the mounting seat, the ball seat is coaxially sleeved outside the ball core and abuts against the ball core, and the ball seat abuts against the inner wall of the mounting seat.

[0008] By adopting the above technical solution, the core shaft includes a ball core and an upper shaft body and a lower shaft body coaxially arranged at its upper and lower ends. The integrated setting reduces the number of components and ensures transmission efficiency. The ball core, as a key transmission component, can efficiently transmit torque. The ball seat is coaxially sleeved on the outside of the ball core and tightly abuts against the ball core to ensure the stability and accuracy of the universal ball joint when transmitting torque. At the same time, a certain angular displacement is allowed between the two axes to adapt to complex working environments. The close abutment between the ball seat and the inner wall of the mounting seat provides a stable installation foundation, reduces loosening or offset caused by vibration or impact, and ensures the stability and reliability of the universal ball joint during long-term use. The mounting seat enables the universal ball joint to be firmly installed on the chassis of the car, ensuring stable operation under various road conditions. Through the close fit between the ball seat and the inner wall of the mounting seat, the possibility of dust entering the interior of the universal ball joint can be reduced to a certain extent, thereby improving its durability and service life.

[0009] Furthermore, the mounting seat includes an outer mounting seat and an inner mounting seat that are coaxially arranged, the inner mounting seat is installed on the inner wall of the lower side of the outer mounting seat, the inner mounting seat has an annular clamping protrusion for connecting with the outer mounting seat, and the inner wall of the outer mounting seat is provided with a plug-in ring groove for inserting the annular clamping protrusion.

[0010] By adopting the above technical solution, the inner mounting seat is connected to the plug-in ring groove on the inner wall of the outer mounting seat through the annular clamping protrusion. The clamping method simplifies the installation process and enhances the connection strength between the inner and outer mounting seats. Compared with the traditional bolt connection or welding method, the clamping structure is more resistant to vibration and impact, ensuring the stability of the universal ball joint under complex working conditions.

[0011] Furthermore, the annular clamping protrusion protrudes from the plug-in ring groove at a side away from the plug-in ring groove and forms a limiting step with the inner wall of the outer mounting seat for the bottom side of the ball seat to abut.

[0012] By adopting the above technical solution, the limiting step provides a stable abutment surface for the ball seat, and the bottom side of the ball seat is tightly abutted against the limiting step, ensuring the accurate position of the ball seat in the mounting seat, which helps to reduce vibration and offset during the transmission process and improve the stability and reliability of power transmission. The combination of the annular clamping protrusion and the limiting step forms a solid support structure, which effectively disperses and bears the load from the ball seat and the transmission system, enhances the load-bearing capacity, and enables the universal ball joint to cope with more severe working conditions and greater torque transmission requirements.

[0013] Furthermore, an embedding annular groove is formed on the outer wall of the outer mounting seat at a side away from the inner mounting seat.

[0014] By adopting the above technical solution, the embedded ring groove can be used as an interface for connecting with other components (mainly protective devices). By embedding the corresponding structures of other components into the embedded ring groove, a more solid and stable connection can be achieved. Compared with traditional welding or bolt fixing methods, it is more resistant to vibration and impact, ensuring the stability of the universal ball joint under complex working conditions. The design of the embedded ring groove makes the installation process simpler and faster. The installer only needs to align the corresponding structure of other components with the embedded ring groove and insert it, without the need for complex positioning and adjustment work, which improves installation efficiency and reduces the risk of failure caused by improper installation.

[0015] Furthermore, an upper annular groove is formed on the outer peripheral wall of the upper shaft body, and a lower annular groove is formed on the outer peripheral wall of the lower shaft body.

[0016] By adopting the above technical solution, the upper annular groove opened on the outer peripheral wall of the upper shaft body and the lower annular groove opened on the outer peripheral wall of the lower shaft body can be used as interfaces for connecting with other components (mainly protective devices). By embedding the corresponding structures of other components into the upper / lower annular grooves, a more firm and stable connection can be achieved.

[0017] In a second aspect, the present application provides a protective device, which adopts the following technical solution:

[0018] A protective device, applicable to the universal ball joint as described in the first aspect, comprising an upper dust cover and a lower dust cover which are sleeved on the outside of the universal ball joint and are respectively arranged at the upper and lower ends of the universal ball joint;

[0019] The outer part of the upper dust cover is provided with an upper clamping ring for fixing the upper dust cover to the upper shaft body and an upper hoop ring for fixing the upper dust cover to the mounting seat, and the outer part of the lower dust cover is provided with a lower hoop ring for fixing the lower dust cover to the mounting seat and a lower clamping ring for fixing the lower dust cover to the lower shaft body.

[0020] By adopting the above technical solution, the upper dust cover and the lower dust cover are directly mounted on the outside of the universal ball joint and are placed at the upper and lower ends thereof to form a physical barrier, effectively preventing dust, mud and water and other impurities from entering the interior of the universal ball joint, protecting the internal structure of the universal ball joint, and the existence of the protective device reduces the direct contact between the universal ball joint and the external environment, reducing the risk of damage caused by factors such as wear and corrosion. At the same time, good dust and dirt prevention effects also help to extend the service life of the universal ball joint and improve its durability.

[0021] Furthermore, the upper dust cover has an upper ring, a first annular block and a second annular block that are integrally connected, the first annular block and the second annular block are respectively located at two ends of the upper ring, a first annular groove for the upper clamping ring to be clamped into is opened on the outer circumferential wall of the first annular block, and a second annular groove for the upper hoop ring to be clamped into is opened on the outer circumferential wall of the second annular block.

[0022] By adopting the above technical solution, the upper dust cover is integrated with the upper collar, the first annular block and the second annular block, which reduces the number of parts, simplifies the assembly process, improves the compactness and stability of the overall structure, and helps to reduce the problem of protection failure caused by looseness or misalignment between parts. The first annular groove on the first annular block and the second annular groove on the second annular block are used to fix the upper tie ring and the upper hoop ring respectively. The double clamping makes the upper dust cover reliably fixed at both ends, preventing displacement or falling off during vehicle driving, and ensuring the continuity of the protection effect.

[0023] Furthermore, the lower dust cover has an integrally connected lower ring, a third annular block and a fourth annular block, the third annular block and the fourth annular block are respectively located at the two ends of the lower ring, the outer circumferential wall of the third annular block is provided with a third annular groove for the lower hoop ring to be clamped into, and the outer circumferential wall of the fourth annular block is provided with a fourth annular groove for the lower clamp ring to be clamped into.

[0024] By adopting the above technical solution, the lower dust cover echoes the upper dust cover, and together they provide comprehensive protection for the universal ball joint. The double protection at both ends ensures the continuity of the protection effect, and can effectively prevent dust, moisture and other impurities from entering the transmission system regardless of the road conditions the vehicle is driving on. The third annular clamp block and the fourth annular clamp block are tightly connected to the lower hoop ring and the lower tie ring through the third annular groove and the fourth annular groove, respectively, to enhance the fixing stability of the lower dust cover on the mounting seat and the lower shaft body. Even in the face of complex vibrations and impacts, the lower dust cover can maintain its position unchanged and continue to play a protective role.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The core shaft adopts an integrated setting of the ball core, the upper shaft body and the lower shaft body to reduce the number of components and improve the transmission efficiency. The ball core, as a key transmission component, can efficiently transmit torque. The close contact between the ball seat and the ball core and the allowable angular displacement between the two shafts ensure the stability and accuracy of the universal ball joint when transmitting torque and adapt to complex working environments. The mounting seat provides a stable installation foundation for the universal ball joint through its stable structure and close fit with the ball seat, reducing looseness or deviation caused by vibration or impact, and ensuring stability and reliability in long-term use;

[0027] 2. The inner and outer mounting seats are connected by an annular clamping protrusion and a plug-in ring groove, which simplifies the installation process and enhances the connection strength. The limiting step provides a stable abutment surface for the ball seat, which enhances the position accuracy of the ball seat in the mounting seat. The combination of the annular clamping protrusion and the limiting step forms a solid support structure, which effectively disperses and bears the load and enhances the bearing capacity, so that the universal ball joint can cope with more severe working conditions and greater torque transmission requirements. The embedded ring groove, upper ring groove and lower ring groove are used as connection interfaces to simplify the connection process with other components (such as protective devices), improve the firmness and stability of the connection, and reduce the risk of failure caused by improper installation;

[0028] 3. The upper dust cover and the lower dust cover are directly mounted on the outside of the universal ball joint to form a physical barrier, which effectively prevents road dust, mud and water and other impurities from entering the transmission system, protects the internal structure of the universal ball joint, and reduces the direct contact between the universal ball joint and the external environment. The upper dust cover and the lower dust cover are reliably fixed through their own integrated settings and double clamping structures to prevent displacement or falling off during vehicle driving, ensuring the continuity of the protective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the cross-sectional structure when the protective device is installed on the outside of the universal ball joint in the embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the core shaft in the embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the cross-sectional structure of the ball seat, the mounting seat, the upper dust cover and the lower dust cover in the embodiment of the present application.

[0032] Figure 4 yes Figure 3 An enlarged schematic diagram of the structure of the dust cover on part A in the middle.

[0033] Figure 5 yes Figure 3 An enlarged schematic diagram of the structure of the lower dust cover in part B.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. mandrel; 11. ball core; 12. upper shaft body; 121. upper ring groove; 13. lower shaft body; 131. lower ring groove; 2. ball seat; 3. mounting seat; 31. outer mounting seat; 311. plug-in ring groove; 312. embedded ring groove; 32. inner mounting seat; 321. annular clamping protrusion; 322. limiting step; 4. upper dust cover; 41. upper sleeve ring; 42. first annular clamping block; 421. first ring groove; 43. second annular clamping block; 431. second ring groove; 44. upper clamping ring; 45. upper hoop ring; 5. lower dust cover; 51. lower sleeve ring; 52. third annular clamping block; 521. third ring groove; 53. fourth annular clamping block; 531. fourth ring groove; 54. lower hoop ring; 55. lower clamping ring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-5 And embodiments, the present application is further described in detail.

[0036] The present application embodiment discloses a universal ball joint and a protective device thereof. Figure 1 and Figure 2 The universal ball joint comprises a core shaft 1, a ball seat 2 and a mounting seat 3. The core shaft 1 and the ball seat 2 are both mounted in the mounting seat 3, and the mounting seat 3 is used to be connected to the chassis of the automobile.

[0037] The core shaft 1 includes a ball core 11, an upper shaft body 12 and a lower shaft body 13 which are integrally connected to the upper and lower sides of the ball core 11, respectively. The upper shaft body 12, the ball core 11 and the lower shaft body 13 are coaxially arranged from top to bottom. The ball core 11 is installed in the ball seat 2, and the outer wall of the ball core 11 abuts against the inner wall of the ball seat 2. The ball seat 2 is installed in the mounting seat 3, and the outer wall of the ball seat 2 abuts against the inner wall of the mounting seat 3. An upper annular groove 121 is provided on the outer peripheral wall of the upper shaft body 12, and a lower annular groove 131 is provided on the outer peripheral wall of the lower shaft body 13.

[0038] Reference Figure 1 and Figure 3 The mounting seat 3 includes an outer mounting seat 31 and an inner mounting seat 32. The inner mounting seat 32 has an annular clamping protrusion 321. The inner wall of the outer mounting seat 31 is provided with a plug-in ring groove 311 near the lower side for the annular clamping protrusion 321 to be inserted and clamped. The side of the annular clamping protrusion 321 away from the plug-in ring groove 311 protrudes from the inner wall of the outer mounting seat 31. The upper side of the annular clamping protrusion 321 and the inner wall of the outer mounting seat 31 jointly form a limiting step 322 for the bottom side of the ball seat 2 to abut.

[0039] The protective device in this embodiment includes an upper dust cover 4 and a lower dust cover 5. The material of the upper dust cover 4 and the lower dust cover 5 is preferably rubber with a certain elastic deformation ability. Figure 3 and Figure 4The upper dust cover 4 includes an upper ring 41, a first annular block 42 and a second annular block 43. The cross section of the upper ring 41 is L-shaped, the first annular block 42 is integrally connected to the upper side of the upper ring 41, and the second annular block 43 is integrally connected to the lower side of the upper ring 41.

[0040] The inner circumferential wall of the first annular clamping block 42 is inserted into the upper annular groove 121 of the upper shaft body 12, and a first annular groove 421 is formed on the outer circumferential wall of the first annular clamping block 42, and an upper clamping ring 44 is inserted into the first annular groove 421. The outer circumferential wall of the outer mounting seat 31 is formed with an embedded annular groove 312, and the second annular clamping block 43 is embedded in the embedded annular groove 312 of the outer mounting seat 31, and a second annular groove 431 is formed on the outer circumferential wall of the second annular clamping block 43, and an upper hoop ring 45 is inserted into the second annular groove 431. The upper dust cover 4 is fixed to the outside of the upper shaft body 12 through the upper clamping ring 44, fixed to the outer mounting seat 31 through the upper hoop ring 45, and the upper part of the core 11 is protected by the upper sleeve ring 41.

[0041] Reference Figure 3 and Figure 5 The lower dust cover 5 includes a lower ring 51, a third annular block 52 and a fourth annular block 53. The cross section of the lower ring 51 is L-shaped and symmetrical with the upper ring 41. The third annular block 52 is integrally connected to the upper side of the lower ring 51, and the fourth annular block 53 is integrally connected to the lower side of the lower ring 51.

[0042] The lower end of the inner mounting seat 32 protrudes from the outer mounting seat 31, and the inner circumferential wall of the third annular clamping block 52 is clamped and fixed to the outer wall of the lower end of the inner mounting seat 32. A third annular groove 521 is provided on the outer circumferential wall of the third annular clamping block 52, and a lower hoop ring 54 is clamped into the third annular groove 521. The fourth annular clamping block 53 is embedded in the lower annular groove 131 of the lower shaft body 13, and a fourth annular groove 531 is provided on the outer circumferential wall of the fourth annular clamping block 53, and a lower clamping ring 55 is clamped into the fourth annular groove 531. The lower dust cover 5 is fixed to the outside of the lower shaft body 13 through the lower clamping ring 55, and is fixed to the outer wall of the inner mounting seat 32 protruding from the outer mounting seat 31 through the lower hoop ring 54, and the lower part of the core 11 is protected by the lower sleeve ring 51.

[0043] The implementation principle of a universal ball joint and its protective device in an embodiment of the present application is as follows: the core shaft 1 is composed of a ball core 11, an upper shaft body 12 and a lower shaft body 13, which are coaxially arranged to form an integral transmission structure. The ball seat 2 is installed in the mounting seat 3, and its inner wall is tightly abutted against the outer wall of the ball core 11, serving as a transition component between the core shaft 1 and the mounting seat 3 to ensure transmission stability and accuracy. The mounting seat 3 includes an outer mounting seat 31 and an inner mounting seat 32, which are fixed by the annular clamping protrusion 321 and the plug-in ring groove 311 to provide a stable installation foundation for the universal ball joint, and the limiting step 322 provides a stable abutment surface for the ball seat 2. The core shaft 1 realizes the transmission of torque through the rotation of the ball core 11 in the ball seat 2. The mounting seat 3 ensures the stability of the universal ball joint during the torque transmission process and reduces looseness or deviation caused by vibration or impact.

[0044] The upper dust cover 4 and the lower dust cover 5 are used together to form a double dust protection. The upper dust cover 4 and the lower dust cover 5 are respectively located at the upper and lower ends of the universal ball joint, forming a physical barrier, effectively preventing dust, moisture and other impurities from entering the transmission system, and protecting the internal structure from damage. The upper dust cover 4 is fixed to the upper shaft body 12 and the outer mounting seat 31 through the upper ring 41, the first annular block 42 and the second annular block 43. The first annular block 42 is inserted into the upper annular groove 121 of the upper shaft body 12 and fixed by the upper clamp ring 44. The second annular block 43 is embedded in the embedded annular groove 312 of the outer mounting seat 31 and fixed by the upper hoop ring 45. The upper dust cover 4 protects the upper part of the ball core 11 to prevent dust and other impurities from entering. The lower dust cover 5 is symmetrical with the upper dust cover 4, and is fixed to the outer wall of the protruding part of the lower shaft body 13 and the inner mounting seat 32 through the lower ring 51, the third annular block 52 and the fourth annular block 53. The third annular clamping block 52 is clamped and fixed to the outer wall of the lower end of the inner mounting seat 32, the fourth annular clamping block 53 is clamped into the lower annular groove 131 of the lower shaft body 13 and fixed by the lower clamping ring 55, and the lower dust cover 5 protects the lower part of the core 11. The protective device is tightly connected with the core shaft 1 and the mounting seat 3 by clamping, embedding and other methods to form a stable overall structure, simplify the installation process, enhance the connection strength, and improve the stability of the protective device.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A universal ball joint, characterized in that: The invention comprises a core shaft (1), a ball seat (2) and a mounting seat (3) for connecting with a vehicle chassis, wherein the core shaft (1) comprises a ball core (11) and an upper shaft body (12) and a lower shaft body (13) coaxially arranged at the upper and lower ends of the ball core (11); the ball core (11) and the ball seat (2) are both installed in the mounting seat (3); the ball seat (2) is coaxially sleeved outside the ball core (11) and abuts against the ball core (11); and the ball seat (2) and the inner wall of the mounting seat (3) abut against each other.

2. A universal ball joint according to claim 1, characterized in that: The mounting seat (3) comprises an outer mounting seat (31) and an inner mounting seat (32) which are coaxially arranged, the inner mounting seat (32) being mounted on the inner wall of the lower side of the outer mounting seat (31), the inner mounting seat (32) having an annular clamping protrusion (321) for connecting with the outer mounting seat (31), and the inner wall of the outer mounting seat (31) being provided with an inserting ring groove (311) for inserting the annular clamping protrusion (321).

3. A universal ball joint according to claim 2, characterized in that: The side of the annular clamping protrusion (321) away from the insertion ring groove (311) protrudes from the insertion ring groove (311) and together with the inner wall of the outer mounting seat (31) forms a limiting step (322) for the bottom side of the ball seat (2) to abut against.

4. A universal ball joint according to claim 2, characterized in that: The outer wall of the outer mounting seat (31) at a side away from the inner mounting seat (32) is provided with an embedding annular groove (312).

5. The universal ball joint according to claim 1, characterized in that: An upper annular groove (121) is provided on the outer peripheral wall of the upper shaft body (12), and a lower annular groove (131) is provided on the outer peripheral wall of the lower shaft body (13).

6. A protective device, characterized in that: The universal ball joint is applicable to any one of claims 1 to 5, comprising an upper dust cover (4) and a lower dust cover (5) which are sleeved on the outside of the universal ball joint and are respectively arranged at the upper and lower ends of the universal ball joint; The outer portion of the upper dust cover (4) is provided with an upper clamping ring (44) for fixing the upper dust cover (4) on the upper shaft (12) and an upper hoop ring (45) for fixing the upper dust cover (4) on the mounting seat (3); the outer portion of the lower dust cover (5) is provided with a lower hoop ring (54) for fixing the lower dust cover (5) on the mounting seat (3) and a lower clamping ring (55) for fixing the lower dust cover (5) on the lower shaft (13).

7. A protective device according to claim 6, characterized in that: The upper dust cover (4) comprises an upper sleeve ring (41), a first annular clamping block (42) and a second annular clamping block (43) which are integrally connected. The first annular clamping block (42) and the second annular clamping block (43) are respectively located at two ends of the upper sleeve ring (41). The outer peripheral wall of the first annular clamping block (42) is provided with a first annular groove (421) for the upper clamping ring (44) to be clamped in, and the outer peripheral wall of the second annular clamping block (43) is provided with a second annular groove (431) for the upper hoop ring (45) to be clamped in.

8. A protective device according to claim 6, characterized in that: The lower dust cover (5) comprises a lower sleeve ring (51), a third annular clamping block (52) and a fourth annular clamping block (53) which are integrally connected. The third annular clamping block (52) and the fourth annular clamping block (53) are respectively located at two ends of the lower sleeve ring (51). The outer peripheral wall of the third annular clamping block (52) is provided with a third annular groove (521) for the lower hoop ring (54) to be clamped in. The outer peripheral wall of the fourth annular clamping block (53) is provided with a fourth annular groove (531) for the lower clamping ring (55) to be clamped in.

Images