Stable high load density one-way clutch

Abstract

The application relates to the technical field of clutches, in particular to a stable high-bearing-density one-way clutch which comprises an outer ring, an inner ring and a retainer between the outer ring and the inner ring, a plurality of cavities are arranged on the retainer at intervals, a torque transmission roller and a spring sheet are arranged in each cavity, the torque transmission roller is located in a corresponding cam groove, and the spring sheet is used for pushing the torque transmission roller to a small-end groove wall of the cam groove; a plurality of first bosses are protruded on the inner side of the outer circumferential surface of the retainer at intervals, a plurality of second bosses are protruded on the outer side of the outer circumferential surface of the retainer at intervals, the inner side surface of the second boss is in contact with the outer side surface of the outer ring, the first boss can play a circumferential fixing role, the second boss can play an axial fixing role, and thus relative rotation between the outer ring and the retainer is prevented during transmission of the one-way clutch, and the one-way clutch is prevented from being disabled.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch technical field, especially to a stable high bearing density one-way clutch. BACKGROUND

[0002] One-way clutch is a basic part with the development of mechatronics products, it is used for the power transmission and separation function between the prime mover and the working machine or the main shaft and the driven shaft inside the machine. It is a self-clutching device that uses the speed change or rotation direction change of the main and driven parts.

[0003] Because the current roller clutch lacks a fixing function, the outer ring and the retainer are prone to relative rotation during use, resulting in poor transmission capacity of the one-way clutch. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the lack of fixing structure between the outer ring and the retainer in the prior art, which is prone to relative rotation, resulting in poor transmission capacity of the one-way clutch, and to provide a stable high bearing density one-way clutch.

[0005] The technical solution adopted by the present application to solve the technical problem is: a stable high bearing density one-way clutch, comprising an outer ring, an inner ring and a retainer located between the outer ring and the inner ring, the retainer is provided with a plurality of cavities spaced apart along its circumferential direction, the cavities are provided with torque transmission rollers and spring sheets, the inner wall of the outer ring is provided with a plurality of cam grooves spaced apart along its circumferential direction, the cam grooves and the torque transmission rollers are one-to-one corresponding, the torque transmission rollers are located in the corresponding cam grooves, and the spring sheets are used to push the torque transmission rollers to the small end groove wall of the cam groove.

[0006] The outer peripheral surface of the retainer is provided with a plurality of first bosses matched with the cam grooves spaced apart along its circumferential direction, the outer peripheral surface of the retainer is provided with a plurality of second bosses spaced apart along its circumferential direction, the first bosses are located in the corresponding cam grooves, and the inner side surface of the second bosses is in contact with the outer side surface of the outer ring. By setting the first bosses matched with the cam grooves on the retainer, the circumferential fixing effect can be achieved, and by setting the second bosses in contact with the outer ring on the retainer, the axial fixing effect can be achieved, thereby preventing the relative rotation between the outer ring and the retainer during the transmission of the one-way clutch, and making the one-way clutch invalid.

[0007] In order to solve the problem that the first and second protrusions completely seal part of the cavity, impurities accumulate in the cavity, the torque transmission roller is abraded, and the service life of the one-way clutch is reduced, the first and second protrusions are further arranged in a staggered manner, the inner side surface of the second protrusion and the outer side surface of the outer ring are in contact, and the first and second protrusions correspond to each other, so that each cavity on the retainer can have at least one oil diffusion outlet, the impurities in the cavity can flow out with the oil, the abrasion of the torque transmission roller is reduced, and the service life is prolonged.

[0008] In order to solve the problem of stability of the retainer after installation, the first and second protrusions are further arc-shaped protrusions, and the diameter of the outer peripheral surface corresponding to the second protrusion is greater than the diameter of the inner peripheral surface corresponding to the outer ring, so that the second protrusion cannot pass through the cam groove, and axial fixation is realized.

[0009] The one-way clutch with high bearing density and stability provided by the application has the beneficial effects that: the first protrusion matched with the cam groove is arranged on the retainer, can play a circumferential fixing role, the second protrusion in contact with the outer ring is arranged on the retainer, can play an axial fixing role, so that relative rotation of the outer ring and the retainer does not occur during transmission of the one-way clutch, and the one-way clutch is prevented from being invalid. BRIEF DESCRIPTION OF DRAWINGS

[0010] The application will be further described below in combination with the drawings and examples.

[0011] Figure 1 is a schematic diagram of the three-dimensional structure of the application;

[0012] Figure 2 is a schematic diagram of the explosion structure of the application;

[0013] Figure 3 is a schematic diagram of the structure of the outer side surface of the application.

[0014] In the figure: 1, outer ring, 1-1, cam groove, 2, inner ring, 3, retainer, 3-1, cavity, 3-2, first protrusion, 3-3, second protrusion, 4, torque transmission roller, 5, spring piece. DETAILED DESCRIPTION

[0015] The application will be further described below in combination with the drawings and examples.

[0016] As Figure 1 is a schematic diagram of the structure of the application, a stable one-way clutch with high bearing density, comprising an outer ring 1, an inner ring 2 and a retainer 3 located between the outer ring 1 and the inner ring 2, as Figure 2As shown, the retainer 3 is provided with a plurality of cavities 3-1 spaced apart along its circumferential direction, each of which is provided with a torque transmission roller 4 and a spring leaf 5. The inner circumferential wall of the outer ring 1 is provided with a plurality of cam grooves 1-1 spaced apart along its circumferential direction, the cam grooves 1-1 corresponding to the torque transmission rollers 4 one-to-one, the torque transmission rollers 4 being located in their corresponding cam grooves 1-1, and the spring leaf 5 being used to push the torque transmission rollers 4 toward the small end groove wall of the cam groove 1-1.

[0017] The inner side of the outer circumference of the retainer 3 is provided with a plurality of first bosses 3-2 that match the cam groove 1-1 at intervals along its circumferential direction, and the outer side of the outer circumferential surface of the retainer 3 is provided with a plurality of second bosses 3-3 that are provided at intervals along its circumferential direction. Figure 3 As shown, the first boss 3-2 is located in the corresponding cam groove 1-1, the inner side of the second boss 3-3 contacts the outer side of the outer ring 1, and the first boss 3-2 and the second boss 3-3 are staggered with each other. By arranging the first boss 3-2 that matches the cam groove 1-1 on the retaining frame 3, it can play a circumferential fixing role. By arranging the second boss 3-3 that contacts the outer ring 1 on the retaining frame 3, it can play an axial fixing role, thereby preventing the outer ring 1 and the retaining frame 3 from rotating relative to each other during the transmission process of the one-way clutch, causing the one-way clutch to fail.

[0018] like Figure 2 As shown, the first boss 3-2 and the second boss 3-3 are staggered, thereby ensuring that each cavity 3-1 on the retaining frame 3 has at least one oil diffusion outlet, ensuring that impurities in the cavity 3-1 can diffuse out with the oil, reducing the wear of the torque transmission roller 4, and thus improving its service life.

[0019] like Figure 2 As shown, the first boss 3-2 and the second boss 3-3 are arc-shaped bosses, and the outer peripheral surface diameter corresponding to the second boss 3-3 is larger than the inner peripheral surface of the outer ring 1, so that the second boss 3-3 cannot be axially fixed by passing through the cam groove.

[0020] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A stable high-load density one-way clutch comprising an outer ring (1), an inner ring (2) and a retaining frame (3) located between the outer ring (1) and the inner ring (2), characterized in that: The retaining frame (3) is provided with a plurality of cavities (3-1) spaced apart along its circumferential direction, and a torque transmission roller (4) and a spring sheet (5) are provided in each of the cavities (3-1). A plurality of cam grooves (1-1) are spaced apart along its circumferential direction on the inner circumferential wall of the outer ring (1), and the cam grooves (1-1) and the torque transmission rollers (4) correspond one to one. The torque transmission rollers (4) are located in their corresponding cam grooves (1-1), and the spring sheet (5) is used to push the torque transmission rollers (4) toward the small end groove wall of the cam groove (1-1); A plurality of first bosses (3-2) matching the cam groove (1-1) are protruded at intervals along the circumferential direction on the inner side of the outer peripheral surface of the retainer (3); a plurality of second bosses (3-3) are protruded at intervals along the circumferential direction on the outer side of the outer peripheral surface of the retainer (3); the first bosses (3-2) are located in the corresponding cam groove (1-1); the inner side surfaces of the second bosses (3-3) are in contact with the outer side surface of the outer ring (1); The first boss (3-2) and the second boss (3-3) are staggered so that each cavity (3-1) on the retainer (3) can have at least one oil diffusion outlet, and the first boss (3-2) and the second boss (3-3) correspond one to one.

2. The stable high-load density one-way clutch according to claim 1, characterized in that: The first boss (3-2) and the second boss (3-3) are arc-shaped bosses, and the diameter of the outer circumference corresponding to the second boss (3-3) is larger than the inner circumference of the outer ring (1).

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