Automobile half-shaft fixed joint sheath
By setting fairways and deformation sections in the sheath of the half-axle fixing joint of the car, the rolling trajectory of the steel ball is restricted, and the problem of unstable power transmission during wheel jumping and steering of the half-axle fixing joint is solved, and the smooth and comfortable driving of the vehicle is achieved. And enhances the sealing and durability of the fixing joints.
Patent Information
- Application Number
- CN202411436329.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-01-03
AI Technical Summary
When the wheels are jumping and steering, the working angle of the half-axle fixed joint changes in the rolling trajectory of the steel ball, affecting the stability of power transmission and posing safety hazards.
A fixed joint sheath of the automobile half-axle is designed, including a fixed connection between the first connecting section and the wheel hub, a fixed connection between the second connecting section and the half-axle, a fairway is provided in the variable diameter section to limit the rolling trajectory of the steel ball, and passes through the deformation section. A sealed cavity is formed with the snap area to ensure that the steel ball rolls normally.
It effectively limits the rolling trajectory of the steel ball, ensures smooth transmission of power, improves the driving stability and comfort of the vehicle, prevents lubricant leakage and dust from entering, and enhances the operating reliability of the fixed joints.
Smart Images
Figure CN119239177A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automobile construction, and in particular to a protective sleeve for a fixing joint of an automobile half-axle. Background Art
[0002] The half-axle fixed joint is an important part of the automobile transmission system. It is used to connect the transmission system and the wheels, and smoothly transmit the power output of the automobile power system to the wheels, thereby driving the vehicle. During the driving process of the vehicle, the fixed joint can ensure the smoothness of power transmission, reduce the vibration and noise caused by unstable power transmission, and improve the ride comfort and driving stability of the vehicle.
[0003] In the prior art, the half-shaft fixed joint includes an outer planetary wheel connected to the wheel hub, the other end of the outer planetary wheel is connected to the half-shaft through a sleeve, and a receiving cavity is formed by the sleeve at the connection between the half-shaft and the outer planetary wheel. A steel ball is arranged in the receiving cavity. The arrangement of the steel ball not only improves the transmission efficiency of mechanical power, but also helps to reduce energy loss and wear, thereby extending the service life of the transmission system.
[0004] However, when the wheel bounces and turns, the working angle of the fixed joint will change greatly. Therefore, the rolling trajectory of the steel ball in the accommodating cavity is prone to change, affecting the normal transmission of the fixed joint and thus affecting the normal driving of the car, posing a safety hazard.
[0005] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention
[0006] The purpose of the embodiment of the present application is to provide a protective sleeve for a fixed joint of an automobile half-axle, which can limit the rolling trajectory of the steel ball while ensuring the normal rolling of the steel ball, thereby ensuring the normal driving of the automobile.
[0007] The present application provides a protective sleeve for a fixed joint of an automobile half shaft, comprising:
[0008] A first connecting section is used for fixed connection with the wheel hub; the first connecting section is sleeved on the outer side of the outer star wheel and connected with the wheel hub through the outer star wheel;
[0009] A second connecting section, used for fixed connection with the half shaft, wherein the second connecting section is sleeved on the half shaft;
[0010] The diameter-changing section is connected between the first connecting section and the second connecting section. A circle of ball tracks is arranged on the inner surface of the diameter-changing section. The ball tracks are arranged around the circumference of the diameter-changing section. The ball tracks are used to further limit the rolling trajectory of the steel balls in the outer star wheel.
[0011] In an practicable manner, the force-bearing surface of the ball lane is a vertically arranged plane.
[0012] In one practicable manner, the force-bearing surface of the ball lane is a right-angled or obtuse-angled folded surface.
[0013] In an practicable manner, the force-bearing surface of the ball track is an arc surface, and the arc radius of the arc surface is greater than or equal to the radius of the steel ball.
[0014] In one practicable manner, the shape and size of the ball lane are set according to the radius of the steel ball.
[0015] In an practicable manner, a deformation section is connected between the diameter-changing section and the second connecting section, and the deformation section is a concave structure.
[0016] In an practicable manner, the concave structure is an arc surface that is concavely arranged.
[0017] In one practicable manner, the deformation section and / or the diameter-changing section is an elastic connecting member.
[0018] In an practicable manner, a first buckle area is provided on the outer surface of the first connecting section, a first clamp is sleeved on the first buckle area, and the first clamp is used to fix the first connecting section and the outer star wheel.
[0019] In an practicable manner, a second buckle area is provided on the outer surface of the second connecting section, a second clamp is sleeved on the second buckle area, and the second clamp is used to fix the second connecting section and the half shaft.
[0020] Compared with the prior art, the beneficial effects of this application are:
[0021] In the technical solution of the present application, a protective sleeve of a fixed joint of an automobile half-axle is provided, which can connect the outer star wheel with the half-axle, and limit the rolling trajectory of the steel ball under the premise of ensuring the normal rolling of the steel ball, and transmit the power from the half-axle to the wheel hub through the steel ball, thereby driving the tire to move forward or backward. During the driving process of the vehicle, especially when the direction is changed, the steel ball can maintain a constant speed to transmit power, ensuring the stability and comfort of the vehicle. Through the setting of the deformation section, when the axes of the half-axle and the wheel hub are not in a straight line, the connection relationship between the half-axle and the wheel hub can be guaranteed. Through the setting of the ball track, the rolling trajectory of the steel ball can be limited to avoid affecting the normal driving of the car. In order to ensure the rolling effect of the steel ball, lubricating grease is added to the sleeve, and a closed cavity is formed in the sleeve through the setting of the first clamp and the second clamp to prevent the leakage of lubricating grease, and to prevent external dust or moisture from entering, thereby ensuring the operation of the fixed joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The present invention is a schematic diagram of a three-dimensional structure of a protective sleeve for a fixed joint of an automobile half-axle according to an embodiment of the present invention.
[0023] Figure 2 It is another three-dimensional structural schematic diagram of the automobile half-axle fixing joint sleeve according to an embodiment of the present invention.
[0024] Figure 3 It is a longitudinal sectional view of a protective sleeve of a vehicle half-axle fixing joint according to an embodiment of the present invention.
[0025] Figure 4 The invention is a schematic diagram of assembling a protective sleeve for a fixed joint of an automobile half-axle according to an embodiment of the present invention.
[0026] The reference numerals are described as follows:
[0027] 1. First connecting section; 2. Outer star wheel; 3. Second connecting section; 4. Half shaft; 5. Variable diameter section; 6. Ballway; 7. Steel ball; 8. Deformation section; 9. First buckle area; 10. Second buckle area; 11. Reinforcement ribs. DETAILED DESCRIPTION
[0028] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.
[0029] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.
[0032] See also Figures 1 to 4 The present application provides a protective sleeve for a fixed joint of an automobile half shaft, comprising:
[0033] A first connecting section 1, used for fixed connection with the wheel hub; the first connecting section 1 is sleeved on the outside of the outer star wheel 2, and the outer star wheel 2 is used for connection with the wheel hub;
[0034] A second connecting section 3, used for fixedly connecting to the half shaft 4, wherein the second connecting section 3 is sleeved on the half shaft 4;
[0035] The diameter-reducing section 5 is connected between the first connecting section 1 and the second connecting section 3. A circle of ball tracks 6 are arranged on the inner surface of the diameter-reducing section 5, and the ball tracks 6 are arranged around the circumference of the diameter-reducing section 5. The ball tracks 6 are used to further limit the rolling trajectory of the steel ball 7. Under the restriction of the outer star wheel 2, the ball track 6, and the inner star wheel 12, the steel ball 7 can only roll in a predetermined space and along the inner surface of the ball track 6. The rolling trajectory of the steel ball 7 is limited by the setting of the ball track 6, so as to prevent the steel ball 7 from falling out when the sheath is deformed due to the vibration of the car, thereby affecting the normal operation of the car.
[0036] It should be noted that a plurality of reinforcing ribs 11 are evenly distributed on the outer side of the diameter-changing section 5 to improve the strength and bearing capacity of the sheath.
[0037] In an practicable manner, the force-bearing surface of the ball track 6 is a vertically arranged plane, and the rolling trajectory of the steel ball 7 is limited by the setting of the plane to prevent the steel ball 7 from exceeding the force-bearing surface and sliding to other areas.
[0038] In an implementable manner, the force-bearing surface of the ball track 6 is a right-angled or obtuse-angled folded surface, and the rolling trajectory of the steel ball 7 is limited by the setting of the folded surface to prevent the steel ball 7 from exceeding the force-bearing surface and sliding to other areas.
[0039] In an practicable manner, the force-bearing surface of the ball track 6 is an arc surface, and the arc radius of the arc surface is greater than or equal to the radius of the steel ball 7 to ensure that the steel ball 7 can roll smoothly on the inner surface of the ball track 6.
[0040] It should be noted that the shape and size of the ballway 6 are set according to the radius of the steel ball 7. By controlling the shape and size of the ballway 6, the blocking ability of the ballway 6 to the steel ball 7 is adjusted, and the extension amount of the steel ball 7 is controlled, thereby controlling the working capacity of the fixed joint.
[0041] In an practicable manner, a deformation section 8 is connected between the variable diameter section 5 and the second connecting section 3, and the deformation section 8 is a concave structure. The length of the variable diameter section 5 can be increased by setting the concave structure. When deformation occurs, the concave section is straightened to increase the deformability of the variable diameter section 5. At the same time, under the synergistic effect of the concave section and the ball track 6, when the deformation section 8 is deformed, the rolling track of the steel ball 7 will not change, thereby preventing the steel ball 7 from sliding out of the ball track 6.
[0042] In one practicable manner, the concave structure is an arc surface that is concavely arranged. By setting the concave structure as an arc surface, the inner side surface of the sheath is made smooth without dead angles, thereby preventing the accumulation of lubricating oil or other substances.
[0043] In an practicable manner, the deformation section 8 and / or the diameter-changing section 5 is an elastic connector. By setting the elastic connector, when the automobile vibrates and the axis of the half shaft 4 and the wheel hub are not in a straight line, the elastic connector can absorb the kinetic energy generated by the vibration to prevent the vibration from damaging the sheath. By setting the elastic connector, the noise during operation can also be reduced, thereby improving the ride comfort of the vehicle.
[0044] In an practicable manner, a first buckle area 9 is provided on the outer surface of the first connecting segment 1 , and a first clamp is sleeved on the first buckle area 9 , wherein the first clamp is used to fix the first connecting segment 1 and the outer star wheel 2 .
[0045] Multiple turns of thread are arranged on the first buckle area 9. The setting of the thread increases the friction between the first clamp and the first connecting section 1 to prevent the first connecting section 1 from falling off. At the same time, a closed cavity is formed in the sheath to prevent leakage of lubricating grease and prevent external dust or moisture from entering.
[0046] In one feasible manner, a second buckle area 10 is provided on the outer surface of the second connecting segment 3, and a second clamp is sleeved on the second buckle area 10. The second clamp is used to fix the second connecting segment 3 and the half shaft 4. A plurality of turns of thread are provided on the second buckle area 10. The friction between the second clamp and the second connecting segment 3 is increased by setting the thread to prevent the second connecting segment 3 from falling off. At the same time, a closed cavity is formed in the sheath to prevent leakage of lubricating grease and prevent external dust or moisture from entering.
[0047] It should be noted that the first connecting section 1 and / or the second connecting section 3 are made of rubber and plastic material. Through the setting of the rubber and plastic material, the first clamp and the second clamp, the fixed connection between the first connecting section 1 and the second connecting section 3 can be made tighter to ensure the sealing of the inner cavity.
[0048] In summary, the present application provides a kind of automobile half-axle fixed joint sleeve, which can seal and connect the outer star wheel 2 with the half-axle 4, and limit the rolling trajectory of the steel ball 7 under the premise of ensuring the normal rolling of the steel ball 7, and transmit the power from the half-axle 4 to the wheel hub through the steel ball 7, so as to drive the tire to move forward or backward. During the driving process of the vehicle, especially when the direction is changed, the steel ball 7 can evenly transmit power to ensure the stability and comfort of the vehicle. Through the setting of the deformation section 8, when the axis of the half-axle 4 and the wheel hub are not in a straight line, the connection relationship between the half-axle 4 and the wheel hub can be guaranteed. Through the setting of the ball track 6, the rolling trajectory of the steel ball 7 can be limited to avoid affecting the normal driving of the car. In order to ensure the rolling effect of the steel ball 7, lubricating grease is added to the sleeve, and a closed cavity is formed in the sleeve through the setting of the first clamp and the second clamp to prevent the leakage of lubricating grease, and to prevent external dust or moisture from entering, so as to ensure the operation of the fixed joint.
[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.
Claims
1. A protective sleeve for a fixed joint of an automobile half shaft, characterized in that: include: A first connecting section is used for fixed connection with the wheel hub; the first connecting section is sleeved on the outer side of the outer star wheel and connected with the wheel hub through the outer star wheel; A second connecting section, used for fixed connection with the half shaft, wherein the second connecting section is sleeved on the half shaft; The diameter-changing section is connected between the first connecting section and the second connecting section. A circle of ball tracks is arranged on the inner surface of the diameter-changing section. The ball tracks are arranged around the circumference of the diameter-changing section. The ball tracks are used to limit the rolling trajectory of the steel balls in the outer star wheel.
2. The automobile half-axle fixing joint sleeve according to claim 1, characterized in that: The force-bearing surface of the ball lane is a vertically arranged plane.
3. The automobile half-axle fixing joint sleeve according to claim 1, characterized in that: The force-bearing surface of the ball lane is a right-angled or obtuse-angled folded surface.
4. The automobile half-axle fixing joint sleeve according to claim 1, characterized in that: The force-bearing surface of the ball track is an arc surface, and the arc radius of the arc surface is greater than or equal to the radius of the steel ball.
5. The automobile half-axle fixing joint sleeve according to any one of claims 2-4, characterized in that: The shape and size of the ball lane are set according to the radius of the steel ball.
6. The automobile half-axle fixing joint sleeve according to claim 1, characterized in that: A deformation section is connected between the diameter-changing section and the second connecting section, and the deformation section is a concave structure.
7. The automobile half-axle fixing joint sleeve according to claim 6, characterized in that: The concave structure is an arc surface that is concavely arranged.
8. The automobile half-axle fixing joint sleeve according to claim 6, characterized in that: The deformation section and / or the diameter-changing section is an elastic connecting piece.
9. The automobile half-axle fixing joint sleeve according to claim 1, characterized in that: A first buckle area is arranged on the outer surface of the first connecting section, and a first clamp is sleeved on the first buckle area. The first clamp is used to fix the first connecting section and the outer star wheel.
10. The automobile half-axle fixing joint sleeve according to claim 9, characterized in that: A second buckle area is arranged on the outer surface of the second connecting section, and a second clamp is sleeved on the second buckle area. The second clamp is used to fix the second connecting section and the half shaft.