One-way clutch belt pulley end cover assembly

Abstract

The one-way clutch belt pulley end cover assembly comprises a belt pulley assembly, a one-way roller clutch, an end cover assembly and a shaft, the belt pulley assembly is connected to the inner wall of the end cover assembly through the one-way roller clutch, and the shaft sequentially penetrates through the belt pulley assembly and the end cover assembly which are matched with the shaft. The belt pulley and the one-way roller clutch are combined, so that parts are simplified, and the cost is reduced; in addition, a one-way roller type clutch structure is adopted, no treading clearance exists, rattling noise is avoided in the clutch disengaging process, and the clutch has the advantage of being quiet in disengaging.

Description

Technical Field

[0001] The utility model relates to the field of clutches, and particularly to an end cover assembly of a one-way clutch pulley. Background Art

[0002] Generally, a pulley clutch is split, and the pulley is connected to the clutch by a key, with a large number of parts and a high price. In addition, a conventional pulley clutch has a ratchet and pawl structure, with a pedal clearance and a rattling noise in the disengaged state.

[0003] After searching the prior art patent literature, it is found that the Chinese utility model patent with the publication number CN205654736U discloses a multi-air-gap pulley-type magnetic clutch, which belongs to the field of vehicle transmission systems and includes a pulley, a driving disk, a driven shaft, a driven disk, a magnetic shunt ring, a yoke disk, a magnet, an end cover, and a bearing. Working principle: When the internal combustion engine works, the pulley drives the driving disk to rotate. When the clutch is not depressed, the magnetic shunt ring is located on the left end cover side; the magnetic lines of force form a closed magnetic circuit through the magnet, the yoke disk, the driving disk, the driven disk, and the left end cover. At this time, the magnetic force at the magnetic conduction blocks of the driving disk and the driven disk is large, and the magnetic force attracts the driven disk and the driving disk together; the clutch is "engaged". When the clutch is depressed, the fork pushes the magnetic shunt ring to the right, so that the magnetic shunt ring is located between the left end cover, the magnet, and the yoke disk; a closed magnetic circuit is formed by the magnet, the yoke disk, the magnetic shunt ring, and the left end cover, and the magnetic lines of force enter the left end cover through the yoke disk and the magnetic shunt ring; the magnetic force at the air gap of the magnetic conduction blocks of the driving disk and the driven disk is very small, and the clutch is "disengaged". Therefore, the method described in this document and the method of the present utility model belong to different inventive concepts. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the present utility model is to provide an end cover assembly of a one-way clutch pulley.

[0005] According to an end cover assembly of a one-way clutch pulley provided by the present utility model, it includes a pulley assembly, a one-way roller clutch, an end cover assembly, and a shaft. The pulley assembly is connected to the inner wall of the end cover assembly through the one-way roller clutch, and the shaft sequentially passes through the pulley assembly and the end cover assembly that match it;

[0006] When the rotational speed of the pulley assembly > the rotational speed of the end cover assembly, the one-way roller clutch is in the engaged state; when the rotational speed of the pulley assembly < the rotational speed of the end cover assembly, the one-way roller clutch is in the disengaged state.

[0007] In some embodiments, the one-way roller clutch includes rollers and an outer ring. The rollers are evenly distributed on the inner wall of the outer ring. The rollers are connected to the pulley assembly, and the outer ring is connected to the end cover assembly.

[0008] In some embodiments, a first circular arc and a second circular arc are provided on the inner wall of the outer ring, the first circular arc and the second circular arc are connected, and the first circular arc and the second circular arc are connected at the matching position of the outer ring and the roller.

[0009] In some embodiments, the pulley assembly includes a first bearing, a first retaining spring, a second retaining spring, a pulley, a third retaining spring and a second bearing. Both ends of the first bearing are fixed to the pulley by the first retaining spring and the second retaining spring respectively. One end of the second bearing is connected to the end of the pulley, and the other end of the second bearing is fixed to the pulley by the third retaining spring.

[0010] In some embodiments, both ends of the pulley are fixed to the shaft by a fifth retaining spring and a nut.

[0011] In some embodiments, the nut passes through the first retaining spring and is connected to the first bearing.

[0012] In some embodiments, a gap is provided between the first bearing and the second bearing.

[0013] In some embodiments, the end cover assembly includes an end cover and a third bearing, the end cover is connected to the third bearing, and the third bearing is adaptively connected to the shaft.

[0014] In some embodiments, the third bearing is fixed to the shaft by a fourth retaining spring.

[0015] In some embodiments, the roller is cylindrical.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model combines a pulley and a one-way roller clutch, simplifies parts and reduces costs; in addition, a one-way roller clutch structure is adopted, which has no pedaling gap and no rattling noise during the clutch disengagement process, and has the advantage of quiet disengagement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 This is a connection diagram of the one-way roller clutch of the utility model.

[0022] Numbers in the figure:

[0023] Nut 1, pulley assembly 2, first bearing 21, first circlip 22, second circlip 23, pulley 24, third circlip 25, second bearing 26, one-way roller clutch 3, roller 31, outer ring 32, first arc 321, second arc 322, end cover assembly 4, end cover 41, third bearing 42, shaft 5, fourth circlip 6, fifth circlip 7. Detailed implementation mode

[0024] The following combines specific embodiments to elaborate on the present utility model in detail. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0025] Embodiment

[0026] According to a one-way clutch pulley end cover assembly provided by the present utility model, as Figure 1 shown, it includes a pulley assembly 2, a one-way roller clutch 3, an end cover assembly 4 and a shaft 5. The pulley assembly 2 is connected to the inner wall of the end cover assembly 4 through the one-way roller clutch 3, and the shaft 5 sequentially passes through the pulley assembly 2 and the end cover assembly 4 that match it.

[0027] As Figure 2 shown, the pulley assembly 2 includes a first bearing 21, a first circlip 22, a second circlip 23, a pulley 24, a third circlip 25 and a second bearing 26. Both ends of the first bearing 21 are limited and fixed on the pulley 24 through the first circlip 22 and the second circlip 23 respectively. One end of the second bearing 26 is connected to the end of the pulley 24, and the other end of the second bearing 26 is limited and fixed on the pulley 24 through the third circlip 25. Preferably, there is a gap between the first bearing 21 and the second bearing 26. Both ends of the pulley 24 are fixed on the shaft 5 through the fifth circlip 7 and the nut 1 respectively, and the nut 1 passes through the first circlip 22 and is connected to the first bearing 21.

[0028] As Figure 2 shown, the end cover assembly 4 includes an end cover 41 and a third bearing 42. The end cover 41 is connected to the third bearing 42. The third bearing 42 is adaptively connected to the shaft 5, and the third bearing 42 is fixed on the shaft 5 through the fourth circlip 6. The pulley 24 is connected to the end cover 41 through the one-way roller clutch 3. As Figure 3As shown, the one-way roller clutch 3 includes rollers 31 and an outer ring 32. Preferably, the rollers 31 are cylindrical. The rollers 31 are evenly distributed on the inner wall of the outer ring 32. The rollers 31 are connected to the pulley 24, and the outer ring 32 is connected to the end cover 41. And at the mating portion between the outer ring 32 and the rollers 31, there are a first arc 321 and a second arc 322, and the first arc 321 and the second arc 322 are connected to each other.

[0029] Working principle: When the rotational speed of the pulley assembly 2 > the rotational speed of the end cover assembly 4, the pulley 24 rotates clockwise relative to the outer ring 32. The rollers 31 are pushed onto the first arc 321 of the outer ring 32 under the action of the frictional force on the outer circumference of the pulley 24. At this time, the one-way roller clutch 3 is in the engaged state; when the rotational speed of the pulley assembly 2 < the rotational speed of the end cover assembly 4, the pulley 24 rotates counterclockwise relative to the outer ring 32. The rollers 31 are pushed onto the second arc 322 of the outer ring 32 under the action of the frictional force on the outer circumference of the pulley 24. At this time, the one-way roller clutch 3 is in the disengaged state.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0031] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments. Those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A one-way clutch pulley end cover assembly, characterized in that: It comprises a pulley assembly (2), a one-way roller clutch (3), an end cover assembly (4) and a shaft (5), wherein the pulley assembly (2) is connected to the inner wall of the end cover assembly (4) through the one-way roller clutch (3), and the shaft (5) passes through the pulley assembly (2) and the end cover assembly (4) matched therewith in sequence; When the rotation speed of the pulley assembly (2) is greater than the rotation speed of the end cover assembly (4), the one-way roller clutch (3) is in an engaged state; when the rotation speed of the pulley assembly (2) is less than the rotation speed of the end cover assembly (4), the one-way roller clutch (3) is in a disengaged state; The pulley assembly (2) comprises a first bearing (21), a first retaining spring (22), a second retaining spring (23), a pulley (24), a third retaining spring (25) and a second bearing (26); two ends of the first bearing (21) are fixed on the pulley (24) by the first retaining spring (22) and the second retaining spring (23), one end of the second bearing (26) is connected to the end of the pulley (24), and the other end of the second bearing (26) is fixed on the pulley (24) by the third retaining spring (25); The end cover assembly (4) comprises an end cover (41) and a third bearing (42), the end cover (41) being connected to the third bearing (42), and the third bearing (42) being adaptively connected to the shaft (5); The one-way roller clutch (3) comprises a roller (31) and an outer ring (32), the roller (31) is cylindrical, the rollers (31) are evenly distributed on the inner wall of the outer ring (32), the roller (31) is connected to the pulley (24), and the outer ring (32) is connected to the end cover (41); A first circular arc (321) and a second circular arc (322) are provided on the inner wall of the outer ring (32); the first circular arc (321) and the second circular arc (322) are connected to each other, and the first circular arc (321) and the second circular arc (322) are connected at the matching position between the outer ring (32) and the roller (31).

2. The one-way clutch pulley end cover assembly according to claim 1, characterized in that: The two ends of the pulley (24) are fixed on the shaft (5) via a fifth retaining spring (7) and a nut (1) respectively.

3. The one-way clutch pulley end cover assembly according to claim 2, characterized in that: The nut (1) passes through the first retaining ring (22) and is connected to the first bearing (21).

4. The one-way clutch pulley end cover assembly according to claim 1, characterized in that: A gap is provided between the first bearing (21) and the second bearing (26).

5. The one-way clutch pulley end cover assembly according to claim 1, characterized in that: The third bearing (42) is fixed on the shaft (5) via a fourth retaining spring (6).

Images