CN218235896U

CN218235896U - One-way clutch

Info

Publication number: CN218235896U
Application number: CN202222584335.5U
Authority: CN
Inventors: 胡旭联
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-06
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses an one-way clutch, including inner circle, outer lane, ring spring, voussoir roller, holder, improve one-way clutch's structure in this scheme, change conventional holder into split type structure to two baffle cooperation rollers are constituteed, and space installation voussoir roller between two rollers and the baffle at cooperation both ends give spacingly, and the processing degree of difficulty of holder obviously reduces, and the voussoir roller is the arcwall face of evagination with the roller opposite face, helps improving the stability of voussoir roller operation and makes things convenient for the machine-shaping of voussoir roller.

Description

One-way clutch

Technical Field

The utility model relates to a clutch technical field, concretely relates to one-way clutch.

Background

One-way clutches, also called 'one-way bearings', are bearings that can rotate freely in one direction and lock up in the other direction. Taking a wedge type one-way bearing as an example, the wedge type one-way bearing comprises an inner ring, an outer ring, a retainer, a splayed wedge roller and an annular spring, wherein the retainer is positioned in an annular cavity of the inner ring and the outer ring, the wedge roller is installed in a hole of the retainer, the wedge is reset by the annular spring, and one-way locking is realized by setting the size of the diagonal diameter of the roller and the distance between the inner ring and the outer ring.

However, in the structure, the shapes of the retainer and the wedge block roller are complex, the processing difficulty is high, the rejection rate is high, and the bearing is easy to break down due to the deviation of the forming size, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical defect, the utility model provides a following technical scheme:

the utility model discloses a one-way clutch, including inner circle, outer lane, ring spring, voussoir roller, holder, set up a plurality of voussoir rollers and reset the voussoir roller through the ring spring in the ring cavity between inner circle, the outer lane, the holder includes baffle one, baffle two, roller, inner circle, outer lane are located baffle one, between the baffle two, inner circle or outer lane and baffle one, baffle two fixed outer lane or inner circle and baffle one, baffle two normal running fit that just correspond set up the roller between the two adjacent voussoir rollers and the voussoir roller is the arcwall face of evagination towards the face of roller, voussoir roller both ends terminal surface and baffle one, the two clearance fit of baffle that correspond.

Improve one way clutch's structure in this scheme, change conventional holder into split type structure to two baffle cooperation rollers are constituteed, and the space installation voussoir roller between two rollers and the baffle of cooperation both ends are spacing, and the processing degree of difficulty of holder obviously reduces, and the voussoir roller is the arcwall face of evagination with the roller opposite face, helps improving the stability of voussoir roller operation and makes things convenient for the machine-shaping of voussoir roller.

Under this structure, can select baffle one, baffle two and inner circle or outer lane fixed, preferred according to the demand:

the outer ring is fixed with the first baffle plate and the second baffle plate into a whole, and a connecting hole is formed in the position, corresponding to the inner ring, in the middle of the first baffle plate or the second baffle plate.

The outer ring is fixed with the two baffles, the inner ring is in running fit with the baffles, and the connecting holes are formed in the positions of the baffles corresponding to the inner ring, so that the peripheral components can be conveniently connected.

Of course, the baffle plate and the inner ring can be fixed, and the outer ring and the baffle plate are in running fit and can be selected according to requirements.

Furthermore, jacks are arranged at the positions corresponding to the first baffle, the second baffle and the outer ring body, and the fasteners penetrate through the jacks corresponding to the first baffle, the second baffle and the outer ring body to fix the first baffle, the second baffle and the outer ring body into a whole.

Fasteners such as positioning pins, positioning posts, bolts, etc. may be used, and are not further described herein.

Further, the diameters of the first baffle plate and the second baffle plate are smaller than the outer diameter of the outer ring. When the inner ring is rotationally matched with the baffle, the diameters of the baffle I and the baffle II are smaller than the outer diameter of the outer ring, so that the external components are directly fixed with the outer ring; this sizing also facilitates the docking of peripheral components with the collar when the collar is rotationally engaged with the bezel.

Further, the working surface of the wedge block roller facing the outer ring is a gradually-changed curved surface type convex arc surface with the curvature radius gradually increased to a preset size along the circumferential direction of the outer ring and gradually reduced, and the change range of the curvature radius at two sides is different; the working surface of the wedge block roller facing the inner ring is an arc surface with the same curvature radius. The working face of the wedge block roller towards the outer ring is similar to a common slope type, slope inclination angles of two sides are different, the working face of the wedge block roller towards the inner ring is an arc face, machining is convenient, and the running stability under the structure is good.

Preferably, the circumferential surface of the upper part of the wedge block roller is a convex arc surface, the circumferential surface of the lower part of the wedge block roller is an arc surface with the same radius, the radius of the roller is smaller than that of the circumferential surface of the lower part of the wedge block roller, the wedge block roller is convenient to process, the arc surface of the lower circumferential surface is matched with the arc surface of the roller, and the running stability is good.

Furthermore, the working surface of the wedge block roller facing the outer ring and the surface of the roller facing the outer ring form spring grooves along the circumferential direction of the outer ring, the spring grooves on the plurality of wedge block rollers and the roller form ring grooves, the annular spring is clamped in the spring grooves, and the springs are conveniently installed in the formed spring grooves.

Furthermore, the rollers are in clearance fit with the rollers on two sides, and the clearance between the wedge block rollers and the rollers controls the braking and sliding of the clutch.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses improve the structure of holder and the structure of voussoir roller, help to reduce the processing degree of difficulty, improve yield and operating stability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is an overall configuration schematic diagram of the present one-way clutch in embodiment 1;

FIG. 2 is a schematic sectional view of the one-way clutch of the present invention;

FIG. 3 is a schematic view of a wedge roller configuration;

wherein the reference numerals are:

1. an inner ring; 2. an outer ring; 3. a first baffle plate; 4. a second baffle plate; 5. a fastener; 6. a wedge roller; 7. a roller; 8. a spring; 9. a spring slot; 61. working surface one; 62. and a second working surface.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Example 1

As shown in fig. 1, the one-way clutch includes an inner ring 1, an outer ring 2, an annular spring, a wedge roller 6, and a retainer, in this example, the retainer includes a first baffle 3, a second baffle 4, and a roller 7, the first baffle 3 and the second baffle 4 are both annular, the first baffle 3 and the second baffle 4 are respectively located at two opposite end faces of the inner ring 1 and the outer ring 2, the first baffle 3 and the second baffle 4 form a similar clamping state for the inner ring 1 or the outer ring 2, and the annular openings of the first baffle 3 and the second baffle 4 correspond to the inner ring, so as to facilitate the butt joint of peripheral components. The first baffle 3, the second baffle 4 and the outer ring 2 are fixed into a whole for display in the embodiment, as shown in fig. 1 and 2, corresponding positions of the first baffle 3, the second baffle 4 and the outer ring 2 are a linear forming jack, a positioning pin or a bolt is used as a fastener 5 to penetrate through the jack, so that the first baffle 3, the second baffle 4 and the outer ring are fixed into a whole, and the inner ring is in clearance fit with the first baffle and the second baffle and can rotate relative to the first baffle and the second baffle. In the embodiment, as shown in fig. 2, a plurality of cylindrical rollers 7 are arranged in an annular cavity between an inner ring 1 and an outer ring 2 at intervals, wedge rollers 6 in the annular cavity are positioned in cavities separated by the rollers 7, the wedge rollers 6 and the rollers 7 are attached to the inner ring 1 through an annular spring 8, and two ends of the wedge rollers 6 and two ends of the rollers 7 are in clearance fit with a first baffle plate 3 and a second baffle plate 4 respectively.

The wedge roller is configured as shown in fig. 3, an upper peripheral surface of the wedge roller 6 is a gradually curved convex arc surface with a curvature radius gradually increasing to a predetermined size along a circumferential direction of the outer ring and a curvature radius gradually decreasing, in a state shown in fig. 3, a change range of the curvature radius of a right side is smaller than that of a left side, the upper peripheral surface faces the outer ring and a first matched working surface 61, a lower peripheral surface of the wedge roller 6 is an arc surface with a uniform curvature radius, and the lower peripheral surface faces the inner ring and a second matched working surface 62. The middle position of a working surface 61 extends along the circumferential direction of the outer ring and penetrates through the U-shaped spring groove 9, the roller 7 corresponds to the U-shaped spring groove 9, if the roller is directly preformed with an annular groove, the spring grooves 9 on the wedge block rollers 6 and the roller 7 form annular grooves, the annular spring 8 is clamped in the spring groove 9, and after the wedge block rollers 6 are abraded in long-term operation, due to the fact that spring tension exists, automatic compensation can be achieved, the wedge block is guaranteed to be tightly attached to the inner ring, the service life of a product is longer, and the performance is more stable.

In the structure, the surface of the wedge block roller facing the roller is a convex arc surface, and the wedge block roller and the arc surface of the roller are in clearance fit, so that the running stability of the wedge block roller is improved.

In addition, the diameters of the first baffle plate 3 and the second baffle plate 4 can be selected to be smaller than the outer diameter of the outer ring 2, so that the direct fixed butt joint of peripheral components and the outer ring is facilitated.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The one-way clutch comprises an inner ring, an outer ring, an annular spring, wedge block rollers and a retainer, wherein a plurality of wedge block rollers are arranged in an annular cavity between the inner ring and the outer ring and reset through the annular spring.

2. The one-way clutch according to claim 1, wherein: the outer ring is fixed with the first baffle plate and the second baffle plate into a whole, and a connecting hole is formed in the position, corresponding to the inner ring, in the middle of the first baffle plate or the second baffle plate.

3. The one-way clutch according to claim 2, wherein: the positions corresponding to the first baffle, the second baffle and the outer ring body are provided with jacks, and the fasteners penetrate through the jacks corresponding to the first baffle, the second baffle and the outer ring body to fix the first baffle, the second baffle and the outer ring body into a whole.

4. The one-way clutch according to claim 1, wherein: the diameters of the first baffle plate and the second baffle plate are smaller than the outer diameter of the outer ring.

5. The one-way clutch according to claim 1, wherein: the working surface of the wedge block roller facing the outer ring is a gradually-changed curved surface type convex arc surface with the curvature radius gradually enlarged to a preset size along the circumferential direction of the outer ring and gradually reduced, and the change range of the curvature radius at two sides is different; and the working surface of the wedge block roller facing the inner ring is an arc surface with the same curvature radius.

6. The one-way clutch according to claim 5, wherein: the peripheral surface of the upper portion of the wedge block roller is a convex cambered surface, the peripheral surface of the lower portion of the wedge block roller is an arc surface with the same radius, and the radius of the roller is smaller than that of the peripheral surface of the lower portion of the wedge block roller.

7. The one-way clutch according to claim 1, wherein: the wedge block roller and the roller form annular grooves, and the annular spring is clamped in the spring grooves.

8. The one-way clutch according to claim 1, wherein: the wedge block roller is in clearance fit with the rollers on two sides.