Four-pin-shaft double-spherical-surface ball ring high-performance driving shaft assembly
By increasing the number of pins and setting a shield on the journal, the problem of excessive force on the pins in the traditional three-ball pin drive shaft assembly is solved, thereby extending the fatigue life of the pins and simplifying the structure.
Patent Information
- Application Number
- CN202520390299.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In traditional three-ball pin drive shaft assemblies, each pin has a relatively large share of power, which affects the fatigue life of the pin.
The four-pin double-spherical ball ring structure is adopted, the number of pins is increased, and a shielding part is set on the journal to prevent the rolling parts from falling out. The retaining ring and other parts are eliminated and the connection is improved to a flange and clamp.
The stress on each pin is reduced, the fatigue life of the pin is improved, the vibration under the limit swing angle is reduced, the structure is simple and the service life is extended.
Smart Images
Figure CN223812469U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automobile parts, concretely relates to a four pin shaft double spherical surface ball ring high performance drive shaft assembly. BACKGROUND
[0002] The automobile is the necessary traffic tool of contemporary society, and most customers will consider the vehicle model with excellent driving experience when selecting the vehicle, such as driving stability, fuel economy, low failure rate, high life and the like. Based on these needs, each part on the corresponding passenger vehicle needs to have excellent performance and quality performance. The key part of the race runner is the legs, and only when the legs are strong, they can run faster, farther and more persistently. The automobile is also so, and it can be said that the drive shaft assembly is the legs of the automobile, and only when the drive shaft assembly has excellent performance, the overall performance of the automobile can be better.
[0003] The traditional three-ball pin type drive shaft assembly has three pin shafts for bearing torque, so that each pin shaft shares a large amount of power output by the differential end, which affects the fatigue life of the pin shaft. CONTENT OF THE UTILITY MODEL
[0004] In order to overcome the defects of the background art, the utility model provides a four pin shaft double spherical surface ball ring high performance drive shaft assembly, which mainly solves the problem that the traditional drive shaft assembly adopts the structure of three-ball pin type, each pin shaft shares a large amount of power, and the fatigue life of the pin shaft is affected.
[0005] The technical scheme of the utility model is,
[0006] A four pin shaft double spherical surface ball ring high performance drive shaft assembly, comprising an intermediate shaft, the intermediate shaft is connected with a first universal joint at one end and a second universal joint at the other end,
[0007] The first universal joint comprises a shell, one end of the intermediate shaft extends into the shell and is provided with four shaft journals, the shaft journals are sequentially provided with rolling elements, inner ball rings and outer ball rings from inside to outside in the circumferential direction, and the shaft journals are provided with shielding parts for preventing the rolling elements from falling out.
[0008] The shielding part is a flange provided on the circumferential outer wall of the shaft journal, and the flange is arranged above the rolling element.
[0009] The rolling element is a rolling pin.
[0010] The angle between adjacent shaft journals is 90 degrees.
[0011] The inner ball ring comprises a ring body, the ring body is axially provided with a through hole, the inner wall of the through hole is provided with a convex ring, and the convex ring is arranged above and below the rolling element.
[0012] Further comprising a dust cover, one end of the dust cover is connected with the intermediate shaft, and one end of the dust cover is connected with the shell.
[0013] The surface of the outer spherical ring for cooperating with the inner wall of the shell comprises
[0014] The intermediate section is flat, and the arc surfaces are arranged at both ends of the intermediate section.
[0015] The dust cover is connected with the intermediate shaft through a clamp.
[0016] The dust cover is connected with the shell through a clamp.
[0017] The beneficial effects of the utility model are as follows: the utility model provides a four-pin-shaft double-spherical-surface spherical-ring high-performance driving shaft assembly, the number of pin shafts is increased, the stress of each pin shaft is reduced, the check ring and other parts on the pin shaft are cancelled, the check part on the pin shaft is adopted instead, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a sectional view schematic diagram of the first embodiment of the utility model.
[0019] Figure 2 It is Figure 1 It is a sectional view schematic diagram of the middle M-M. DETAILED DESCRIPTION
[0020] The utility model is further described below in combination with the drawings, a four-pin-shaft double-spherical-surface spherical-ring high-performance driving shaft assembly, including intermediate shaft 1, one end of the intermediate shaft is connected with first universal joint 2, the other end is connected with second universal joint 3, the first universal joint includes shell 21, one end of the intermediate shaft is inserted into the shell and is equipped with four shaft journals 11, the shaft journal is sequentially equipped with rolling element 30, inner spherical ring 4 and outer spherical ring 5 from inside to outside in circumference, and the shaft journal is equipped with check part 12 for preventing the rolling element from falling out. The number of pin shafts is increased, the stress of each pin shaft is reduced, the check ring and other parts on the pin shaft are cancelled, the check part on the pin shaft is adopted instead, and the structure is simple. The traditional assembly adopts a check ring, the application directly sets a check part on the pin shaft for limiting, prevents the rolling element from falling out, and saves parts. The number of pin shafts is increased, so when the driving shaft assembly is at a large swing angle, the assembly can still have excellent performance, and vibration under the limit swing angle is reduced.
[0021] In the embodiment, as shown in the drawing, the check part is a flange arranged on the circumferential outer wall of the shaft journal, and the flange is arranged above the rolling element. The structure is relatively simple, and can be annular.
[0022] In the embodiment, as shown in the drawing, the rolling element is a rolling pin.
[0023] In the embodiment, as shown in the figure, the angle between adjacent shaft journals is 90°. The shaft journals are evenly distributed, and the stress is more balanced.
[0024] In the embodiment, as shown in the figure, the inner ball ring comprises a ring body, the ring body is axially provided with a through hole, the inner wall of the through hole is provided with a convex ring 43, and the convex ring is correspondingly arranged above and below the rolling member. The inner ball ring is limited.
[0025] In the embodiment, as shown in the figure, the dust cover 6 is further arranged, one end of the dust cover is connected with the intermediate shaft, and one end of the dust cover is connected with the shell. Foreign matters are prevented from entering, and the service life is increased.
[0026] In the embodiment, as shown in the figure, the surface of the outer ball ring for cooperating with the inner wall of the shell comprises a middle section 51 in a plane, and the middle section is provided with an arc surface 52 at both ends. The outer shape of the ball ring is changed from a spherical structure to a cylindrical structure plus an arc structure, the ball ring will not scratch the inner wall of the shell, and the phenomena of abnormal sound and impact wear failure are reduced.
[0027] In the embodiment, as shown in the figure, the dust cover is connected with the intermediate shaft through a clamp. The clamp is convenient to install.
[0028] In the embodiment, as shown in the figure, the dust cover is connected with the shell through a clamp. The clamp is convenient to install.
[0029] In the description of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the utility model.
[0030] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0031] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. The embodiments should not be regarded as limiting the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.
Claims
1. A four-pin shaft double spherical ball ring high-performance drive shaft assembly, comprising a middle shaft (1), one end of which is connected with a first universal joint (2) and the other end of which is connected with a second universal joint (3), characterized in that: the first universal joint comprises a shell (21), one end of the middle shaft extends into the shell and is provided with four shaft journals (11), the shaft journals are circumferentially provided with, from inside to outside, rolling elements (30), an inner spherical ball ring (4) and an outer spherical ball ring (5), and the shaft journals are provided with blocking portions (12) for preventing the rolling elements from falling out.
2. A four-pin shaft double spherical raceway high performance drive shaft assembly according to claim 1, characterized in that: The blocking portion is a flange provided on the circumferential outer wall of the shaft journal, and the flange is arranged above the rolling element.
3. A four-pin shaft double spherical raceway high performance drive shaft assembly as described in claim 1, wherein: The rolling element is a rolling pin.
4. A four-pin shaft double spherical raceway high performance drive shaft assembly as described in claim 1, wherein: The angle between adjacent shaft journals is 90°.
5. A four-pin shaft double spherical raceway high performance drive shaft assembly as described in claim 1, wherein: The inner spherical ball ring comprises a ring body, the ring body is axially provided with a through hole, and the inner wall of the through hole is provided with a convex ring (43) arranged above and below the rolling element.
6. A four-pin shaft double spherical raceway high performance drive shaft assembly as claimed in any one of claims 1-5, characterized in that: Further comprising a dust cover (6), one end of which is connected with the middle shaft and one end of which is connected with the shell.
7. A four-pin shaft double spherical raceway high performance drive shaft assembly as set forth in claim 6, wherein: The surface of the outer spherical ball ring for cooperating with the inner wall of the shell comprises a flat middle section (51), and the middle section is provided at both ends with arc surfaces (52).
8. A four-pin shaft double spherical raceway high performance drive shaft assembly as set forth in claim 7, wherein: The dust cover is connected with the middle shaft through a clamp.
9. A four-pin shaft double spherical raceway high performance drive shaft assembly of claim 8, wherein: The dust cover is connected with the shell through a clamp.