CN112161006A

CN112161006A - Wedge type one-way clutch

Info

Publication number: CN112161006A
Application number: CN202010932287.7A
Authority: CN
Inventors: 吴诗彬; 孟爽
Original assignee: Chongqing Lu'an Industry And Trade Co ltd
Current assignee: Chongqing Lu'an Industry And Trade Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-01-01

Abstract

The invention discloses a wedge type one-way clutch which comprises an outer ring, an inner ring, a strip-shaped spring ring, a first retainer, a second retainer and a plurality of wedges, wherein the inner ring is coaxially arranged in the outer ring; the band-shaped spring ring is installed between the first retainer and the second retainer, and applies a pre-tightening force to the plurality of wedges in the clamping direction. The wedge type one-way clutch provided by the invention can facilitate the installation and fixation of the wedge, improves the positioning accuracy, and has the advantages of simple integral processing technology and low cost.

Description

Wedge type one-way clutch

Technical Field

The invention relates to the technical field of automobile parts, in particular to a wedge type one-way clutch.

Background

Clutches are widely used as important parts of mechanical transmission, and the requirements of automatic engagement and disengagement are mainly achieved by changing the relative motion speed or changing the rotation direction of a driving part and a driven part.

The one-way clutch belongs to an important branch of clutches and comprises an engaged type and a friction type, wherein the friction type one-way clutch comprises a roller type one-way clutch, a wedge type one-way clutch and a spring type one-way clutch. The existing wedge type one-way clutch mainly comprises an inner ring, an outer ring, a wedge, a retainer, a spring and other parts, and has the characteristics of large bearing capacity, light weight and compact structure. However, in the existing block type one-way clutch, a retainer is usually arranged between an inner ring and an outer ring to install a fixed wedge, and the problem of complex manufacturing process exists during production and assembly; meanwhile, the existing wedge type one-way clutch has the problem of poor action precision when in use, and has certain limitation.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a novel wedge type one-way clutch, so as to solve the problems of the prior art that the processing difficulty is large and the operation precision is low.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a wedge type one-way clutch comprises an outer ring, an inner ring, a belt-shaped spring ring, a first retainer, a second retainer and a plurality of wedges, wherein the inner ring is coaxially arranged in the outer ring, a plurality of first retaining holes are uniformly distributed in the circumferential direction of the first retainer, a plurality of second retaining holes are uniformly distributed in the circumferential direction of the second retainer, the wedges are uniformly distributed in the first retaining holes and the second retaining holes, the outer end surfaces of the wedges are abutted against the inner side wall of the outer ring, and the inner end surfaces of the wedges are abutted against the outer side wall of the inner ring; the band-shaped spring ring is installed between the first retainer and the second retainer, and applies a pre-tightening force to the plurality of wedges in the clamping direction.

Preferably, the band-shaped spring ring includes that last spring ring, lower spring ring and interval are connected go up the connecting band between spring ring, the lower spring ring, every two form one between the connecting band and supply the third that the voussoir passed keeps the hole, is located voussoir and one of them connecting band looks butt in the third keeps the hole, is formed with the spring piece portion on another connecting band.

Preferably, the elastic sheet portion is provided with a V-shaped first bending portion, and an opening direction of the first bending portion faces the outer ring direction.

Preferably, the upper spring ring and the lower spring ring are also formed with a second bent portion having a V shape, and the opening direction of the second bent portion is also toward the outer ring direction.

Preferably, the difference between the inner diameter dimension of the outer ring and the outer diameter dimension of the inner ring is smaller than the height dimension of the wedge.

Preferably, the number of the wedges is 16-25.

Preferably, the outer ring is circumferentially provided with a plurality of connecting holes.

The invention has the beneficial effects that:

according to the wedge block type one-way clutch provided by the invention, the first retainer and the second retainer which are mutually embedded are arranged, and the first retainer and the second retainer are provided with the first retaining hole and the second retaining hole which correspond to each other, so that the wedge block can be conveniently installed and fixed, the positioning accuracy is improved, and the wedge block type one-way clutch has the advantages of simple integral processing technology and low cost.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic diagram of the explosion structure of the present invention with the inner ring omitted;

fig. 4 is a schematic structural view of a band-type spring coil in accordance with the present invention.

Description of reference numerals:

1. an outer ring; 11. connecting holes; 2. an inner ring; 3. a band-shaped spring ring; 31. an upper spring ring; 32. a lower spring ring; 33. a connecting belt; 34. a third holding hole; 35. a spring piece portion; 36. a first curved portion; 37. a second curved portion; 4. a first holder; 41. a first retention aperture; 5. a second holder; 51. a second holding hole; 6. and (4) wedge blocks.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Example (b):

referring to fig. 1 to 4, a sprag-type one-way clutch includes an outer ring 1, an inner ring 2, a band-shaped spring ring 3, a first retainer 4, a second retainer 5, and a plurality of sprags 6, where the inner ring 2 is coaxially disposed in the outer ring 1, a plurality of first retaining holes 41 are uniformly distributed in a circumferential direction on the first retainer 4, a plurality of second retaining holes 51 are uniformly distributed in a circumferential direction on the second retainer 5, the plurality of sprags 6 are uniformly distributed in the first retaining holes 41 and the second retaining holes 51, an outer end surface of each sprag 6 abuts against an inner side wall of the outer ring 1, and an inner end surface of each sprag 6 abuts against an outer side wall of the inner ring 2; the band spring ring 3 is attached between the first holder 4 and the second holder 5, and applies a biasing force in an engagement direction to the plurality of wedges 6.

In this embodiment, the first retainer 4 is sleeved outside the second retainer 5, that is, the first retainer 4, the band-shaped spring ring 3, the second retainer 5 and the inner ring 2 are coaxially arranged in the outer ring 1 in sequence, one end of each of the plurality of wedges 6 abuts against the outer side wall of the inner ring 2, and the other end of each of the plurality of wedges passes through the second retaining hole 51, the third retaining hole 34 and the first retaining hole 41 in sequence to abut against the inner side wall of the outer ring 1. In the embodiment, the number of the wedges 6 is set to be 20, and the wedges are uniformly distributed between the inner ring 2 and the outer ring 1; in some other embodiments, 16 to 25 may be provided. When the wedge block type torque transmission device is used, when the outer ring 1 rotates clockwise, the contact surface of the outer ring 1 and the wedge blocks 6 generates friction force under the action of centrifugal force and the pretension force of the strip-shaped spring rings 3, the centers of the wedge blocks 6 generate rightward torque, and the inner ring 2 and the outer ring 1 are in forced engagement, so that the effect of transmitting torque is achieved; when the outer ring 1 rotates anticlockwise, the centers of the wedges 6 incline to the left, the inner ring 2 and the outer ring 1 are in a non-meshed state, and the inner ring 2 does not rotate along with the outer ring 1.

In this embodiment, the band-shaped spring ring 3 comprises an upper spring ring 31, a lower spring ring 32 and connecting bands 33 connected between the upper spring ring 31 and the lower spring ring 32 at intervals, a third holding hole 34 for the wedge 6 to pass through is formed between every two connecting bands 33, the wedge 6 in the third holding hole 34 abuts against one of the connecting bands 33, and a spring part 35 is formed on the other connecting band 33; the elastic piece part 35 is provided with a V-shaped first bent part 36, and the opening direction of the first bent part 36 faces the outer ring 1 direction; second bent portions 37 having a V shape are also formed in the upper spring ring 31 and the lower spring ring 32, and the opening direction of the second bent portions 37 is also toward the outer ring 1; the service life of the band-shaped spring ring 3 can be increased by providing the first curved portion 36 and the second curved portion 37.

In this embodiment, the difference between the inner diameter of the outer ring 1 and the outer diameter of the inner ring 2 is smaller than the height of the wedge 6, so as to improve the reliability of the product.

In this embodiment, the outer ring 1 is circumferentially provided with a plurality of connecting holes 11, which facilitates the installation and connection of the product.

In conclusion, the wedge type one-way clutch provided by the invention has the advantages that the processing technology is simple, the assembly difficulty of the wedge type one-way clutch is reduced, the production efficiency is favorably improved, and meanwhile, the running reliability is higher.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The wedge type one-way clutch is characterized by comprising an outer ring (1), an inner ring (2), a strip-shaped spring ring (3), a first retainer (4), a second retainer (5) and a plurality of wedges (6), wherein the inner ring (2) is coaxially arranged in the outer ring (1), a plurality of first retainer holes (41) are uniformly distributed in the circumferential direction on the first retainer (4), a plurality of second retainer holes (51) are uniformly distributed in the circumferential direction on the second retainer (5), the wedges (6) are uniformly distributed in the first retainer holes (41) and the second retainer holes (51), the outer end surface of each wedge is abutted against the inner side wall of the outer ring (1), and the inner end surface of each wedge is abutted against the outer side wall of the inner ring (2); the band-shaped spring ring (3) is installed between the first retainer (4) and the second retainer (5), and applies a pre-tightening force towards the clamping direction to the plurality of wedges (6).

2. The one-way clutch of sprag type according to claim 1, characterized in that the band-shaped spring ring (3) comprises an upper spring ring (31), a lower spring ring (32) and connecting bands (33) connected between the upper spring ring (31) and the lower spring ring (32) at intervals, a third holding hole (34) for the sprag (6) to pass through is formed between every two connecting bands (33), the sprag (6) in the third holding hole (34) abuts against one of the connecting bands (33), and a spring plate part (35) is formed on the other connecting band (33).

3. One-way clutch of sprag type according to claim 2, characterized in that the spring portion (35) is provided with a first bend (36) having a V-shape, the first bend (36) opening in a direction towards the outer ring (1).

4. One-way clutch of the sprag type according to claim 3, characterized in that the upper spring ring (31) and the lower spring ring (32) are likewise formed with a second bend (37) in a V-shape, the opening direction of the second bend (37) also facing the outer ring (1).

5. One-way clutch of the sprag type according to claim 1, characterized in that the difference between the dimensions of the inner diameter of the outer ring (1) and the outer diameter of the inner ring (2) is smaller than the height dimension of the sprags (6).

6. One-way clutch of the sprag type according to claim 1, characterized in that the number of sprags (6) is 16-25.

7. The sprag-type one-way clutch according to claim 1, wherein the outer ring (1) is circumferentially provided with a plurality of coupling holes (11).