Universal joint retainer capable of reducing abnormal sound

Abstract

The utility model discloses a universal joint retainer capable of reducing abnormal sound. The universal joint retainer comprises a retainer and a plurality of windows, the window is formed by connecting a transverse edge and a longitudinal edge; the transverse edge of at least two windows in the retainer sequentially comprises a first grinding area, a limiting area and a space reserving area from the middle to the two sides; the transverse edge in the remaining window comprises a second grinding area and a vacant area from the middle to the two sides; the second grinding area is longer than the first grinding area; the first grinding area is connected with the limiting area through a limiting step; the first grinding area and the second grinding area are movement areas of the steel balls; and when the steel ball moves to the limiting step, the distance between the edge of the steel ball and the longitudinal edge of the window is not less than 0.5 mm. According to the retainer, when the universal joint swings in the moving process, the steel balls slide in the windows of the shortened grinding area, so that the steel balls cannot touch the longitudinal edge (the distance between the steel balls and the longitudinal edge is at least 0.5 mm) of the retainer in the moving process, and then abnormal sound caused by collision is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of universal joint retainer, and particularly to a universal joint retainer capable of reducing abnormal sound. BACKGROUND

[0002] The automobile constant velocity joint is one of the core components of the automobile chassis driving system, and the retainer is an important part of the constant velocity joint and is the main component affecting the abnormal sound of the driving shaft. With the continuous expansion of the new energy automobile market, the requirement for abnormal sound is becoming more and more strict. The existing constant velocity joint comprises an outer cage, an inner wheel, a retainer and a steel ball. The inner wheel and the retainer can swing in the outer cage. During the movement of the constant velocity joint, the steel ball slides in the retainer window. Since the steel ball collides with the side wall of the retainer window during the sliding process, abnormal sound is generated. It is necessary to develop a retainer structure that can effectively reduce abnormal sound.

[0003] In the prior art, there are also some technical solutions for reducing abnormal sound. For example, the utility model with the patent number CN202123116358.5 discloses a mute type high load automobile hub unit. The lubricating oil is injected into the oil groove through the oil injection structure, and then flows onto the surface of the steel ball, thereby playing a lubricating role and avoiding abnormal sound caused by friction. For another example, the utility model with the patent number CN201920217705.7 discloses a miniature motor bearing with a new type of dust cover. The gap between the bearing outer ring and the bearing inner ring is sealed by the sealing ring, preventing dust from entering the ball retainer and the bearing ball, causing dry wear of the bearing ball and abnormal sound. In addition, the invention application with the patent number CN202010906683.2 discloses a method for improving the abnormal sound of the ball cage type constant velocity joint. A wear-resistant coating is provided on the outer surface of the retainer to improve the wear resistance of the retainer, thereby quickly and effectively achieving the purpose of improving the abnormal sound of the ball cage type constant velocity joint. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a universal joint retainer capable of reducing abnormal sound. During the movement of the universal joint, the steel ball slides in the grinding area of the window, so that the steel ball does not collide with the longitudinal edge of the retainer (the distance from the longitudinal edge is at least 0.5 mm) during the movement, thereby reducing the abnormal sound caused by the collision.

[0005] The utility model discloses a technical scheme that solves technical problems is: a universal joint retainer that can reduce abnormal sound, including the retainer and the window for accommodating the steel ball that is set up on the retainer, the window is connected by horizontal edge and longitudinal edge, the horizontal edge of at least two windows in the retainer includes first grinding area, limit area and leave empty area from middle to both sides in proper order, the horizontal edge of the remaining window in the retainer includes second grinding area and leave empty area from middle to both sides, the length of second grinding area is greater than first grinding area, first grinding area and limit area are connected through spacing step, and first grinding area is lower than limit area, first grinding area and second grinding area are all the movement area of steel ball, when steel ball moves to spacing step, the distance between the edge of steel ball and longitudinal edge of window is no less than 0.5mm.

[0006] Further, the window containing the first grinding area in the retainer is arranged in pairs and symmetrically arranged in space.

[0007] Further, the roughness of the first grinding area is higher than that of the limit area.

[0008] Further, the spacing step is a slope structure or an arc surface structure.

[0009] Further, if the length of the horizontal edge of the window is L, the diameter of the steel ball is D, and the length of the first grinding area is a, then (L-D-a) / 2 should be greater than 0.5mm.

[0010] As another embodiment of the utility model, the horizontal edge of all windows in the retainer includes the first grinding area, the limit area and the leave empty area from middle to both sides in proper order.

[0011] The utility model has the advantages that compared with the prior art, the universal joint retainer provided by the utility model shortens the length of the grinding area on the horizontal edge of the window, shortens the sliding stroke of the steel ball in the grinding area (the friction of the grinding area and the limiting effect of the spacing step), so that the steel ball does not collide with the longitudinal edge of the window during movement (the distance from the longitudinal edge is at least 0.5mm), thereby reducing the abnormal sound caused by the collision between the steel ball and the inner wall of the window. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The cross-sectional structure schematic view of the retainer provided for example 1.

[0013] Figure 2 The structure schematic view of the area A. Figure 1

[0014] Figure 3 ​Another angle of the cage provided for example 1.

[0015] Figure 4 For Figure 3 Structure diagram of the middle area B (window containing the second grinding area).

[0016] Figure 5 Structure diagram of the window with the first grinding area in examples 1 and 2.

[0017] Figure 6 Sectional structure diagram of the cage provided for example 2.

[0018] Wherein, 1-cage; 2-first grinding area; 3-second grinding area; 4-limiting step; 5-limiting area; 6-empty area; 7-steel ball; 8-longitudinal edge; 9-lateral edge; 10-window. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Example 1

[0021] As Figures 1-5 shown, a universal joint cage capable of reducing abnormal sound includes a cage 1 and six windows 10 opened on the cage 1 for accommodating steel balls 7; each of the windows 10 is connected by a lateral edge 9 and a longitudinal edge 8; the lateral edge 9 of two windows 10 in the cage 1 sequentially includes a first grinding area 2, a limiting area 5 and an empty area 6 from the middle to both sides; the lateral edge 9 of the remaining windows 10 in the cage 1 includes a second grinding area 3 and an empty area 6 from the middle to both sides; the length of the second grinding area 3 is greater than that of the first grinding area 2; as Figure 1 shown, the windows 10 provided with the first grinding area 2 are symmetrically arranged in space.

[0022] The first grinding area 2 is connected to the limiting area 5 through a limiting step 4, and in this embodiment, the limiting step 4 is an arc surface structure. The first grinding area 2 is lower than the limiting area 5; the roughness requirement of the first grinding area 2 is higher than that of the limiting area 5.

[0023] In the embodiment, the steel ball 7 slides in the window 10 with the first grinding area 2, and the first grinding area 2 is the movement area of the steel ball 7; when the steel ball 7 moves to the limiting step 4, the distance between the edge of the steel ball 7 and the longitudinal edge 8 of the window 10 is not less than 0.5 mm, so that the steel ball 7 will not collide with the longitudinal edge 8 of the window 10, and the abnormal sound caused by the collision can be avoided. If the length of the transverse edge 9 of the window 10 is L, the diameter of the steel ball 7 is D, and the length of the first grinding area 2 is a, then (L-D-a) / 2 should be greater than 0.5 mm.

[0024] In the embodiment, the steel ball 7 slides in the window 10 with the second grinding area 3, and the second grinding area 3 is the movement area of the steel ball 7; since the steel balls 7 in each window 10 of the retainer move synchronously, the movement displacement of the steel ball 7 moving in the second grinding area 3 is the same as that of the steel ball 7 moving in the first grinding area 2, and the steel ball 7 will not collide with the longitudinal edge 8 of the window 10, and the abnormal sound caused by the collision can be avoided.

[0025] Embodiment 2

[0026] As shown in Figure 5 and 6 A retainer for a universal joint capable of reducing abnormal sound includes a retainer 1 and six windows 10 provided on the retainer 1 for accommodating steel balls 7; each of the windows 10 is connected by a transverse edge 9 and a longitudinal edge 8; the transverse edges 9 of all the windows 10 in the retainer 1 sequentially include a first grinding area 2, a limiting area 5 and a vacant area 6 from the middle to both sides. The first grinding area 2 is connected to the limiting area 5 through a limiting step 4, and in the embodiment, the limiting step 4 is an arc surface structure. The first grinding area 2 is lower than the limiting area 5; the roughness of the first grinding area 2 is higher than that of the limiting area 5 and the vacant area 6.

[0027] In the embodiment, the steel ball 7 slides in the window 10 with the first grinding area 2, and the first grinding area 2 is the movement area of the steel ball 7; when the steel ball 7 moves to the limiting step 4, the distance between the edge of the steel ball 7 and the longitudinal edge 8 of the window 10 is not less than 0.5 mm, so that the steel ball 7 will not collide with the longitudinal edge 8 of the window 10, and the abnormal sound caused by the collision can be avoided. If the length of the transverse edge 9 of the window 10 is L, the diameter of the steel ball 7 is D, and the length of the first grinding area 2 is a, then (L-D-a) / 2 should be greater than 0.5 mm. Compared with embodiment 1, the length of the grinding area of each window is shortened in the embodiment, which can not only avoid the abnormal sound caused by the collision, but also make the stress of each window more uniform, and the use effect is better and the service life is longer.

[0028] The above embodiments are only used for illustrating the present application, and are not intended to limit the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and all equivalent technical solutions also belong to the scope of the present application. The patent protection scope of the present application should be defined by the claims.

Claims

1. A gimbal retainer capable of reducing noise, comprising a retainer and a plurality of windows formed on the retainer for accommodating steel balls; characterized in that: The window is connected by a transverse edge and a longitudinal edge; the transverse edge of at least two windows in the retainer sequentially comprises a first grinding area, a limiting area and a reserved area from the middle to both sides, the transverse edge of the remaining windows in the retainer sequentially comprises a second grinding area and a reserved area from the middle to both sides; the length of the second grinding area is greater than that of the first grinding area; the first grinding area and the limiting area are connected through a limiting step, and the first grinding area is lower than the limiting area; the first grinding area and the second grinding area are both movement areas of the steel ball; when the steel ball moves to the limiting step, the distance between the edge of the steel ball and the longitudinal edge of the window is not less than 0.5mm.

2. The hanger for a universal joint that reduces noise according to claim 1, wherein: In the retainer, the windows containing the first grinding area are arranged in pairs and symmetrically in spatial position.

3. The noise reducing gimbal retainer of claim 1, wherein: The roughness requirement of the first grinding area is higher than that of the limiting area.

4. The rattle-reducing gimbal retainer of claim 1, wherein: The limiting step is a slope structure or an arc surface structure.

5. The noise reducing gimbal retainer of claim 1 wherein: If the length of the transverse edge of the window is L, the diameter of the steel ball is D, and the length of the first grinding area is a, then (L-D-a) / 2 should be greater than 0.5mm.

6. The noise reducing gimbal retainer of claim 1 wherein: The transverse edge of all windows in the retainer sequentially comprises a first grinding area, a limiting area and a reserved area from the middle to both sides.

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