Wave crest non-interference dust cover suitable for high rotating speed
By designing a peak-valley mechanism and an integrated molded dust cover, the problem of dust cover damage due to friction at high speeds was solved, achieving stability and dustproof effect of the dust cover at high speeds, extending service life and reducing maintenance costs.
Patent Information
- Application Number
- CN202422697429.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing dust cover is damaged at high speeds due to friction between the shaft and the ball cage, thus losing its dustproof effect.
A peak-valley mechanism was designed, including a large valley sleeve, a large peak sleeve, and a small peak-valley component. Through the cooperation of the transition sleeve and the support sleeve, the sleeves are prevented from contacting and rubbing at high speeds. An integral molding structure is adopted to ensure stability.
To prevent friction damage between sleeves at high speeds, maintain the dustproof effect of the dust cover, extend service life, and reduce maintenance costs.
Smart Images
Figure CN223563316U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dust cover technical field, especially a wave crest does not interfere with dust cover suitable for high speed. BACKGROUND
[0002] With the development of the automobile industry, cars gradually enter thousands of households, and a component in the car is called a ball cage, and the ball cage, also known as a constant velocity joint, is an important component in the transmission system of a car. Its function is to transmit power from the transmission to the drive wheels to drive the car at high speed. There are many types of constant velocity joints for cars, among which the ball cage type constant velocity joint and the tripod type constant velocity joint are the most widely used. It mainly consists of a sliding sleeve, a three-way shaft, a transmission shaft, a star-shaped sleeve, a retainer, and a bell-shaped shell. Because the constant velocity joint transmits heavy driving torque, it is heavily loaded, has high transmission accuracy, and has a large demand, and it is a safety component, so its main parts are made of precision forgings.
[0003] The existing ball cage needs to be used in cooperation with the shaft rod. In order to realize the sealing of the connection between the ball cage and the shaft rod, a corresponding dust cover is generally installed.
[0004] However, the dust cover is easy to swing between the shaft rod and the ball cage, and the dust cover is easy to generate a large amount of heat due to contact, which causes the dust cover to be damaged, thereby losing the dustproof effect. Therefore, we propose a wave crest non-interference dust cover suitable for high speed. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a wave crest non-interference dust cover suitable for high speed, which can realize that the small wave crest sleeve, the small wave valley sleeve, the large wave valley sleeve, and the large wave crest sleeve do not contact each other when swinging greatly, thereby ensuring that the dust cover does not lose the dustproof effect due to frictional heat damage at high speed.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: a wave crest non-interference dust cover suitable for high speed, including shell connecting portion, the one end of shell connecting portion is provided with peak and valley mechanism, the peak and valley mechanism includes:
[0007] Large wave valley sleeve, the large wave valley sleeve is connected to the end face of shell connecting portion, and the large wave valley sleeve is concave;
[0008] Large wave crest sleeve, the large wave crest sleeve is connected to the end of large wave valley sleeve, and the large wave crest sleeve is convex, the large wave crest sleeve and large wave valley sleeve cooperate to form a large peak and valley assembly, and the end face of the large wave crest sleeve is connected with a support sleeve;
[0009] Small peak valley assembly, which is located on one side of the large wave trough sleeve, is composed of a plurality of small wave peak sleeves and small wave trough sleeves connected between adjacent small wave peak sleeves.
[0010] Preferably, the number of small wave peak sleeves on the small peak valley assembly is two or three, and a small wave trough sleeve is connected between every two adjacent small wave peak sleeves.
[0011] Preferably, the end face of the small wave trough sleeve is connected with an extension sleeve, and the outer diameter of the extension sleeve gradually decreases from the end close to the small peak valley assembly to the end away from the small peak valley assembly, and the outer surface of the extension sleeve is concave.
[0012] Preferably, the end face of the large wave peak sleeve is connected with a support sleeve, one end of the support sleeve is connected with a transition sleeve, one end of the transition sleeve is connected with the small peak valley assembly, and the outer surface of the support sleeve is convex.
[0013] Preferably, the end of the extension sleeve is connected with a shaft connecting part, and an annular protrusion is fixedly arranged on the outer surface of the end of the shaft connecting part, and an annular groove is arranged on the outer surface of the end of the shell connecting part.
[0014] Preferably, the shell connecting part, the large wave trough sleeve and the large wave peak sleeve form a large diameter end, and the shaft connecting part, the small peak valley assembly and the transition sleeve form a small diameter end.
[0015] The technical effects and advantages of the utility model are as follows:
[0016] The shaft connecting part is connected with the shaft, and the shell connecting part is connected with the ball cage shell. During large swinging between the shaft and the ball cage, the transition sleeve and the support sleeve exist, and the large wave trough sleeve, the large wave peak sleeve and the small peak valley assembly are matched, so that the small wave peak sleeve, the small wave trough sleeve, the large wave trough sleeve and the large wave peak sleeve are not in contact during large swinging, thereby ensuring that the dust cover does not lose the dustproof effect due to frictional heat damage at high speed. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is a structure schematic view of three small peak valley assemblies of the utility model.
[0018] Fig. 2 It is a structure schematic view of two small peak valley assemblies of the utility model.
[0019] In the figure: 1, shaft connecting part; 2, small peak valley assembly; 201, small wave peak sleeve; 202, small wave trough sleeve; 3, transition sleeve; 4, support sleeve; 5, large wave peak sleeve; 6, large wave trough sleeve; 7, shell connecting part; 8, extension sleeve. DETAILED DESCRIPTION
[0020] 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.
[0021] This utility model provides, for example Figs. 1-2 The illustrated peak-to-valley dust cover suitable for high-speed operation includes a housing connection portion 7. One end of the housing connection portion 7 is provided with a peak-valley mechanism, which includes: a large valley sleeve 6, which is connected to the end face of the housing connection portion 7 and is concave; a large peak sleeve 5, which is connected to the end of the large valley sleeve 6 and is convex, and the large peak sleeve 5 and the large valley sleeve 6 cooperate to form a large peak-valley assembly; and a small peak-valley assembly 2, which is located on one side of the large valley sleeve 6 and is composed of multiple small peak sleeves 201 and small valley sleeves 202 connected between adjacent small peak sleeves 201.
[0022] Furthermore, the number of small peak sleeves 201 on the small peak-valley component 2 is set to two or three, and a small valley sleeve 202 connects every two adjacent small peak sleeves 201; it can be selected to have three small peak sleeves 201 or two small peak sleeves 201 according to actual needs. This makes the dust cover have better adaptability.
[0023] Furthermore, an extension sleeve 8 is connected to the end face of the small peak valley sleeve 202, and the outer diameter of the extension sleeve 8 gradually decreases from the end near the small peak valley component 2 to the end away from the small peak valley component 2, and the outer surface of the extension sleeve 8 is concave; the extension sleeve 8 connects the small peak valley component 2 to the shaft connection part 1.
[0024] Furthermore, a support sleeve 4 is connected to the end face of the large peak sleeve 5, and a transition sleeve 3 is connected to one end of the support sleeve 4. One end of the transition sleeve 3 is connected to the small peak-valley component 2, and the outer surface of the support sleeve 4 is convex. The small peak-valley component 2 and the large peak-valley component are connected by the transition sleeve 3 and the support sleeve 4, which effectively connects the large peak-valley component and the small peak-valley component 2 with a diameter difference. This avoids the reduction in the service life of the dust cover due to mutual wear between the peaks during long-term large swing angles, thus reducing maintenance costs. In addition, the support sleeve 4 adapts to deformation when the dust cover deforms, resulting in low stress.
[0025] Further, the end of the extension sleeve 8 is connected with the shaft rod connecting part 1, and the outer surface of the end of the shaft rod connecting part 1 is fixedly provided with an annular protrusion, and the outer surface of the end of the shell connecting part 7 is provided with an annular groove; the shaft rod connecting part 1 is connected with the shaft rod, and the shell connecting part 7 is connected with the ball cage.
[0026] It should be noted that the shell connecting part 7, the large valley sleeve 6, the support sleeve 4, the large peak sleeve 5, the small peak valley assembly 2, the transition sleeve 3 and the shaft rod connecting part 1 can be integrally formed; the integrally formed dust cover can have better structural stability.
[0027] Further, the shell connecting part 7, the large valley sleeve 6 and the large peak sleeve 5 form a large diameter end, and the shaft rod connecting part 1, the small peak valley assembly 2 and the transition sleeve 3 form a small diameter end; the large diameter end is better adapted and connected with the shell, and the small diameter end is better adapted and connected with the shaft rod.
[0028] The working principle of the utility model is as follows:
[0029] In the use process, the shaft rod connecting part 1 is connected with the shaft rod, and the shell connecting part 7 is connected with the ball cage shell; in the large swing process between the shaft rod and the ball cage, due to the existence of the transition sleeve 3 and the support sleeve 4, and the cooperation of the large valley sleeve 6, the large peak sleeve 5 and the small peak valley assembly 2, the small peak sleeve 201, the small valley sleeve 202, the large valley sleeve 6 and the large peak sleeve 5 will not contact when the swing angle is thirty-six degrees, so that the frictional heat damage is avoided at high speed, and the dust cover loses the dustproof effect.
[0030] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.
Claims
1. A dust cover for high rotational speeds, in which the peaks do not interfere, comprising a housing connection part (7), characterized in that, One end of the shell connecting part (7) is provided with a peak and valley mechanism, the peak and valley mechanism comprises: A large trough sleeve (6) is connected to the end face of the shell connecting part (7), and the large trough sleeve (6) is concave; A large peak sleeve (5) is connected to the end of the large trough sleeve (6), and the large peak sleeve (5) is convex, the large peak sleeve (5) and the large trough sleeve (6) form a large peak and valley assembly, and the end face of the large peak sleeve (5) is connected with a support sleeve (4); A small peak and valley assembly (2) is located on one side of the large trough sleeve (6), and the small peak and valley assembly (2) is composed of a plurality of small peak sleeves (201) and small trough sleeves (202) connected between adjacent small peak sleeves (201).
2. A dust cover according to claim 1, characterized in that The number of small peak sleeves (201) on the small peak and valley assembly (2) is two or three, and a small trough sleeve (202) is connected between every two adjacent small peak sleeves (201).
3. A dust cover according to claim 1, characterized in that The end face of the small trough sleeve (202) is connected with an extension sleeve (8), the outer diameter of the extension sleeve (8) gradually decreases from the end close to the small peak and valley assembly (2) to the end away from the small peak and valley assembly (2), and the outer surface of the extension sleeve (8) is concave.
4. A dust cover according to claim 3, characterized in that One end of the support sleeve (4) is connected with a transition sleeve (3), one end of the transition sleeve (3) is connected with the small peak and valley assembly (2), and the outer surface of the support sleeve (4) is convex.
5. A dust cover according to claim 4, characterized in that The end of the extension sleeve (8) is connected with a shaft connecting part (1), and the outer surface of the end of the shaft connecting part (1) is fixedly provided with an annular protrusion, and the outer surface of the end of the shell connecting part (7) is provided with an annular groove.
6. A dust cover according to claim 3, characterized in that The shell connecting part (7), the large trough sleeve (6) and the large peak sleeve (5) form a large diameter end, and the shaft connecting part (1), the small peak and valley assembly (2) and the transition sleeve (3) form a small diameter end.