CN212455264U

CN212455264U - One-way bearing

Info

Publication number: CN212455264U
Application number: CN202022124883.0U
Authority: CN
Inventors: 陈仙鹏; 闵乐宁
Original assignee: Taizhou Haipeng Machinery Co ltd
Current assignee: Taizhou Haipeng Machinery Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-02-02
Anticipated expiration: 2030-09-24

Abstract

The application relates to a one-way bearing, which relates to the field of bearings and comprises an outer ring, an inner ring and a one-way retainer, wherein a plurality of rollers and springs are arranged in the one-way retainer along the circumferential direction, and the elastic force of the springs drives the rollers to abut against the groove wall of a limiting groove to form a one-way rotating structure; an annular ball retainer is further arranged between the outer ring and the inner ring, a plurality of balls are arranged in the ball retainer along the circumferential direction, an outer flange is arranged on the outer edge of the end face, far away from the ball retainer, of the one-way retainer, the outer flange extends outwards along the radial direction of the one-way retainer, and an outer embedding groove for embedding the outer flange is formed in the position, close to the end face, of the outer ring; the inner edge of the end face of the one-way retainer, which is far away from the ball retainer, is provided with an inner flange, and the end face of the inner ring is provided with an inner embedded groove for embedding the inner flange. The one-way retainer of the bearing is directly used as a check ring, so that the bearing can be thinner, and the adaptability to application occasions is improved; the bearing can be made thinner at the structural level instead of through simple size change, and the axial bearing capacity of the bearing is strong.

Description

One-way bearing

Technical Field

The application relates to the field of bearings, in particular to a one-way bearing.

Background

The bearing comprises an inner ring and an outer ring, which are common parts for establishing a rotational connection. The main function of the bearing is to support the mechanical rotator, reduce the friction coefficient in the rotation process and ensure the rotation precision.

The bearing comprises a bearing body, a bearing seat, a bearing, a retainer ring and a bearing seat, wherein the bearing seat is provided with a bearing, the bearing seat is provided with a bearing groove, the retainer groove is arranged on the bearing seat, the bearing seat is provided with a bearing seat, the retainer ring is arranged on the bearing seat, the bearing seat is provided with a bearing hole, the bearing hole is provided with a bearing hole, the retainer ring is arranged on the bearing hole, the bearing.

SUMMERY OF THE UTILITY MODEL

In order to make a bearing thin and improve adaptability to application occasions, the application provides a one-way bearing.

The application provides a one-way bearing adopts following technical scheme:

a one-way bearing comprises an outer ring and an inner ring, wherein a one-way retainer is arranged between the outer ring and the inner ring, a plurality of rollers and springs are arranged in the one-way retainer along the circumferential direction, the one-way retainer is provided with a post retaining groove for mounting the rollers, the inner wall of the outer ring is provided with limiting grooves corresponding to the rollers one by one, and the elastic force of the springs drives the rollers to abut against the groove walls of the limiting grooves to form a one-way rotating structure; an annular ball retainer is further arranged between the outer ring and the inner ring, a plurality of balls are arranged in the ball retainer along the circumferential direction, an inner ball groove for the balls to roll is formed in the outer ring wall of the inner ring, and an outer ball groove for the balls to roll is formed in the inner ring wall of the outer ring;

the outer edge of the end face, far away from the ball retainer, of the one-way retainer is provided with an outer flange, the outer flange extends outwards along the radial direction of the one-way retainer, and an outer embedding groove for embedding the outer flange is formed in the position, close to the end face, of the outer ring; the inner edge of the end face, far away from the ball retainer, of the one-way retainer is provided with an inner flange, and the end face of the inner ring is provided with an inner embedded groove for embedding the inner flange.

Through adopting above-mentioned technical scheme, this bearing is under the prerequisite that realizes the unidirectional rotation function, and the axial bearing capacity of bearing has been improved in the cooperation of ball and interior ball groove, outer ball groove. Because the outer flange and the inner flange of the one-way retainer have the function of the retainer ring, the thickness of one retainer ring of the bearing is reduced, and compared with the prior art, the retainer ring can be thinner, and the adaptability to application occasions is improved. The improvement is to enable the bearing to be made thinner at a structural level rather than by simple dimensional changes.

Optionally, the depth direction of outer caulking groove is radially outwards along the outer lane, the notch of outer caulking groove is radially inwards towards the outer lane, outer flange and outer caulking groove joint.

Through adopting above-mentioned technical scheme, outer flange and the outer groove joint back of inlaying, inlay the groove outward and can restrict outer flange and break away from, improve the installation steadiness of outer flange and outer lane.

Optionally, one side of the ball retainer, which is far away from the one-way retainer, is provided with a ball retainer ring, the outer ring end part of the ball retainer ring is fixedly clamped with the outer ring, and the inner ring end part of the ball retainer ring is abutted against the inner ring.

By adopting the technical scheme, the ball retainer ring forms an oil sealing structure on one side of the bearing, and the ball retainer ring is combined with the outer flange and the inner flange of the one-way retainer, so that oil sealing is formed on two sides of the bearing, and the bearing is not easy to leak after lubricating oil is injected into the bearing.

Optionally, the ball retainer ring includes an elastic ring and a support ring disposed in the middle of the end face of the elastic ring, the elastic ring contacts with the outer ring and the inner ring, the support ring is made of metal, and the support ring is opposite to the ball retainer.

Through adopting above-mentioned technical scheme, the joint can be accomplished through deformation and outer lane to the elastic ring, and the support ring of metal material is used for guaranteeing the holistic structural strength of ball retainer ring.

Optionally, the end face of the ball retainer facing the support ring is an annular limiting plane, and the limiting plane faces the support ring and abuts against the support ring.

Through adopting above-mentioned technical scheme, when receiving great axial force between the inner circle of bearing, outer lane, spacing plane can play the effect of bearing capacity through the butt support ring, prevents that the bearing from damaging.

Optionally, the surface of the support ring facing the limiting plane is a frosted surface, and the ball holder is made of a plastic material.

Through adopting above-mentioned technical scheme, when iron fillings entered into between ball retaining ring and the ball holder, iron fillings can attach between the hole of frosting, because spacing plane is near the frosting of support ring to and the tension effect of lubricating oil, iron fillings are difficult for breaking away from the frosting, make this bearing have the function of spontaneous clearance iron fillings, increase of service life.

Optionally, the one-way retainer and the ball retainer are integrally fixed.

By adopting the technical scheme, the one-way retainer and the ball retainer which are integrally fixed are more compact in structure, so that the bearing can be thinner.

Optionally, the ball retainer is provided with ball retaining grooves for mounting balls, and the column retaining grooves and the ball retaining grooves are arranged in a staggered manner along the circumferential direction of the bearing.

By adopting the technical scheme, the roller and the ball can be allowed to be overlapped in the thickness direction of the bearing, and the bearing can be further thinned structurally.

Optionally, the outer diameter of the outer ring is 50-60 mm.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the one-way retainer is directly used as a check ring, so that the bearing can be thinner, and the adaptability to application occasions is improved;

2. the present application enables bearings to be made thinner at a structural level, rather than by simple dimensional changes;

3. the one-way bearing has strong axial bearing capacity.

Drawings

Fig. 1 is a perspective view of a one-way bearing according to a first embodiment.

Fig. 2 is an exploded view of the first embodiment.

Fig. 3 is a longitudinal sectional view of the first embodiment.

Fig. 4 is an enlarged view of fig. 3 at B.

Fig. 5 is a sectional view taken along line a-a of fig. 1.

Fig. 6 is a schematic view of a one-way bearing of the second embodiment.

Fig. 7 is an enlarged view at C of fig. 6.

Description of reference numerals: 1. an outer ring; 2. an inner ring; 3. a one-way retainer; 4. a ball retainer; 31. a column holding groove; 32. a roller; 33. a spring; 41. a ball holding groove; 42. a ball bearing; 21. an inner ball groove; 11. an outer ball groove; 5. a ball retainer ring; 51. an elastic ring; 52. a support ring; 43. a limiting plane; 521. sanding surface; 12. a limiting groove; 34. an outer flange; 35. an inner flange; 13. an external caulking groove; 22. an embedded groove is formed; 311. and (4) mounting the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The first embodiment is as follows:

the embodiment of the application discloses a one-way bearing, referring to fig. 1, the one-way bearing comprises an outer ring 1 and an inner ring 2, the outer diameter of the outer ring 1 is 50-60mm, the outer diameter of the outer ring 1 in the embodiment is specifically 55mm, and the inner diameter of the inner ring 2 is specifically 30 mm.

Referring to fig. 2 and 3, a one-way retainer 3 and a ball retainer 4 are arranged between the outer ring 1 and the inner ring 2, the one-way retainer 3 and the ball retainer 4 are both annular, and the axes of the outer ring 1, the inner ring 2, the one-way retainer 3 and the ball retainer 4 are overlapped. The ball retainer 4 is positioned on one side of the end face of the one-way retainer 3, and the connecting line direction of the one-way retainer 3 and the ball retainer 4 is along the axial direction of the bearing.

Referring to fig. 2 and 4, a plurality of column holding grooves 31 are uniformly arranged in the unidirectional holder 3 along the circumferential direction, and each column holding groove 31 is internally provided with a roller 32 and a spring 33; a plurality of ball holding grooves 41 are uniformly provided in the ball holder 4 in the circumferential direction, and a ball 42 is provided in each ball holding groove 41.

The outer ring wall of the inner ring 2 is provided with an inner ball groove 21 for rolling the balls 42, the inner ring wall of the outer ring 1 is provided with an outer ball groove 11 for rolling the balls 42, and both the inner ball groove 21 and the outer ball groove 11 are ring grooves. When the outer race 1 rotates relative to the inner race 2, the balls 42 roll in the circumferential direction in the inner ball grooves 21 and the outer ball grooves 11, the ball retainer 4 rotates in accordance with the rolling of the balls 42, and the balls 42 slide on the groove walls of the ball retaining grooves 41.

One side of the ball retainer 4 departing from the one-way retainer 3 is provided with a ball retainer ring 5, the ball retainer ring 5 comprises an elastic ring 51 and a support ring 52 fixed in the middle of the end face of the elastic ring 51, the elastic ring 51 is made of rubber, and the support ring 52 is positioned on one side of the elastic ring 51 facing the ball retainer 4. The end part of the outer ring of the elastic ring 51 is clamped and fixed with a ring groove formed in the edge of the end face of the outer ring 1, the end part of the inner ring of the elastic ring 51 is positioned in the ring groove formed in the edge of the end face of the inner ring 2, and the ball retainer ring 5 forms an oil sealing structure on one side of the bearing. The support ring 52 is a metal ring, and the support ring 52 is used for ensuring the integral structural strength of the ball retainer ring 5; the end surface of the ball retainer 4 facing the support ring 52 is an annular limiting plane 43, the limiting plane 43 faces the support ring 52, the surface of the support ring 52 facing the limiting plane 43 is a frosted surface 521, and the frosted surface 521 is made by sand blasting; the stop plane 43 abuts the sanding surface 521. The ball retainer 4 is made of plastic, specifically PA66 plastic.

Referring to fig. 2 and 5, the one-way retainer 3 is also made of plastic, specifically, PA66 plastic. The shape of the outer edge of the one-way retainer 3 corresponds to the limiting groove 12, after the one-way retainer 3 and the outer ring 1 are assembled, the one-way retainer 3 and the outer ring 1 cannot rotate relatively, and the one-way retainer 3 and the inner ring 2 can rotate relatively.

The inner wall of the outer ring 1 is provided with limiting grooves 12 which are in one-to-one correspondence with the rollers 32, and the groove walls of the limiting grooves 12 are obliquely arranged, so that the inner wall of the outer ring 1 is wavy; along the same circumferential direction of the bearing, the distance between the groove wall of the limiting groove 12 and the inner ring 2 is gradually reduced. The spring 33 is located on the same side of the roller 32 in the circumferential direction, specifically, located at a larger distance between the groove wall of the limit groove 12 and the inner ring 2, the roller 32 is driven by the elastic force of the spring 33 to slide to a narrower position of the limit groove 12, and the roller 32 contacts with the groove wall of the limit groove 12 through the cylindrical surface. The combination of the limiting groove 12, the one-way retainer 3, the spring 33 and the roller 32 enables the bearing to form a one-way rotating structure, referring to fig. 5, when the outer ring 1 is fixed and the inner ring 2 rotates clockwise, the roller 32 can overcome the elastic force of the spring 33 and roll to a wider part of the limiting groove 12, and at the moment, the inner ring and the outer ring of the bearing can rotate; when the outer ring 1 is fixed and the inner ring 2 rotates along the counterclockwise direction, the elastic force of the spring 33 enables the roller 32 to abut against the narrow part of the limit groove 12, the roller 32 is clamped between the groove wall of the limit groove 12 and the inner ring 2, and the inner ring 2 cannot rotate at the moment, so that the one-way rotation function of the bearing is realized.

Referring to fig. 3 and 4, an outer flange 34 is disposed on an outer edge of an end surface of the one-way retainer 3 away from the ball retainer 4, the outer flange 34 is integrally fixed with the one-way retainer 3, the outer flange 34 extends outward in a radial direction of the one-way retainer 3, and the outer flange 34 is annular. The position that outer lane 1 is close to the terminal surface is equipped with the outer caulking groove 13 that supplies outer flange 34 embedding, and outer caulking groove 13 is seted up in the interior rampart department of outer lane 1, and the degree of depth direction of outer caulking groove 13 is radially outwards along outer lane 1, and the notch of outer caulking groove 13 is radially inwards towards outer lane 1, and outer flange 34 is through the mode of deformation and the outer caulking groove 13 joint.

The inner edge of the end face of the one-way retainer 3, which is far away from the ball retainer 4, is provided with an inner flange 35, the inner flange 35 is integrally fixed with the one-way retainer 3, the inner flange 35 extends inwards along the radial direction of the one-way retainer 3, the inner flange 35 is annular, and the end face of the inner ring 2 is provided with an embedded groove 22 for embedding the inner flange 35. When the outer ring 1 and the inner ring 2 rotate relatively, the outer rib 34 and the outer ring 1 are fixed, and the inner rib 35 and the inner ring 2 rotate relatively.

The combination of the one-way retainer 3, the outer flange 34 and the inner flange 35 also forms an oil seal structure on one side of the bearing departing from the ball retainer ring 5, so that oil seals are formed on two sides of the bearing, and the bearing is not easy to leak after lubricating oil is injected into the bearing. When a large axial force is applied between the inner ring 2 and the outer ring 1 of the bearing, the outer flange 34 and the ball retainer ring 5 can also play a role in bearing force, so that the bearing is prevented from being damaged.

After the bearing operates for a long time, fine iron filings may be generated in the bearing due to abrasion, and the iron filings are mixed into lubricating oil in the bearing. When iron chips enter between the ball retainer ring 5 and the ball retainer 4, the iron chips can be attached between the holes of the frosted surface 521, and due to the fact that the limiting plane 43 is close to the frosted surface 521 of the support ring 52 and the tension of lubricating oil, the iron chips are not easy to separate from the frosted surface 521, the bearing has the function of automatically cleaning the iron chips, and the service life is prolonged.

In conclusion, under the premise of realizing the unidirectional rotation function of the bearing, the axial bearing capacity of the bearing is improved by the cooperation of the balls 42 with the inner ball grooves 21 and the outer ball grooves 11. The one-way retainer 3 is directly used as a retainer ring at one side of the bearing, so that the thickness of the retainer ring can be reduced, the bearing can be thinner at the structural level, and the adaptability to application occasions is improved.

Example two:

the application also discloses a one-way bearing. Referring to fig. 6 and 7, the second embodiment is different from the first embodiment in that: the one-way retainer 3 and the ball retainer 4 are integrally fixed, and the column retaining grooves 31 and the ball retaining grooves 41 are alternately arranged along the circumferential direction of the bearing. This arrangement allows the rollers 32 and the balls 42 to overlap in the thickness direction of the bearing, and allows the bearing to be further thinned structurally, rather than by simple size changes.

The groove wall of the column holding groove 31 is provided exclusively with a mounting groove 311 for mounting the spring 33, and the elastic force direction of the spring 33 is along the depth direction of the mounting groove 311. With the arrangement, after the spring 33, the roller 32 and the one-way retainer 3 are assembled, the spring 33 and the roller 32 are not easy to separate from the installation positions, so that the subsequent one-way retainer 3 is further assembled with the outer ring 1 and the inner ring 2, and friction between the spring 33 and the outer ring 1 or the inner ring 2 during the operation of the bearing can be avoided.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A one-way bearing comprises an outer ring (1) and an inner ring (2), wherein a one-way retainer (3) is arranged between the outer ring (1) and the inner ring (2), a plurality of rollers (32) and springs (33) are arranged in the one-way retainer (3) along the circumferential direction, the one-way retainer (3) is provided with column retaining grooves (31) for the rollers (32) to be mounted, the inner wall of the outer ring (1) is provided with limiting grooves (12) which are in one-to-one correspondence with the rollers (32), and the rollers (32) are driven by the elasticity of the springs (33) to abut against the groove walls of the limiting grooves (12) to form a one-way rotating structure; the method is characterized in that: an annular ball retainer (4) is further arranged between the outer ring (1) and the inner ring (2), a plurality of balls (42) are arranged in the ball retainer (4) along the circumferential direction, an inner ball groove (21) for the balls (42) to roll is formed in the outer ring wall of the inner ring (2), and an outer ball groove (11) for the balls (42) to roll is formed in the inner ring wall of the outer ring (1);

the outer edge of the end face, far away from the ball retainer (4), of the one-way retainer (3) is provided with an outer flange (34), the outer flange (34) extends outwards along the radial direction of the one-way retainer (3), and an outer embedding groove (13) for embedding the outer flange (34) is formed in the position, close to the end face, of the outer ring (1); the inner edge of the end face of the one-way retainer (3), which is far away from the ball retainer (4), is provided with an inner flange (35), and the end face of the inner ring (2) is provided with an inner embedded groove (22) for embedding the inner flange (35).

2. A one-way bearing according to claim 1, wherein: the depth direction of outer caulking groove (13) is radially outwards along outer lane (1), the notch of outer caulking groove (13) is radially inwards towards outer lane (1), outer flange (34) and outer caulking groove (13) joint.

3. A one-way bearing according to claim 1, wherein: one side that ball holder (4) deviate from one-way holder (3) is equipped with ball retaining ring (5), the outer loop tip and outer lane (1) joint of ball retaining ring (5) are fixed, the inner ring tip and the inner circle (2) butt of ball retaining ring (5).

4. A one-way bearing according to claim 3, wherein: the ball retainer ring (5) comprises an elastic ring (51) and a support ring (52) arranged in the middle of the end face of the elastic ring (51), the elastic ring (51) is in contact with the outer ring (1) and the inner ring (2), the support ring (52) is made of metal, and the support ring (52) is just opposite to the ball retainer (4).

5. A one-way bearing according to claim 4, wherein: the end face, facing the support ring (52), of the ball retainer (4) is an annular limiting plane (43), and the limiting plane (43) is opposite to the support ring (52) and abuts against the support ring (52).

6. A one-way bearing according to claim 5, wherein: the surface of the support ring (52) facing the limiting plane (43) is a frosted surface (521), and the ball retainer (4) is made of plastic.

7. A one-way bearing according to claim 1, wherein: the one-way retainer (3) and the ball retainer (4) are integrally fixed.

8. A one-way bearing according to claim 7, wherein: the ball retainer (4) is provided with ball retaining grooves (41) for mounting balls (42), and the column retaining grooves (31) and the ball retaining grooves (41) are arranged in a staggered manner along the circumferential direction of the bearing.

9. A one-way bearing according to claim 1, wherein: the outer diameter of the outer ring (1) is 50-60 mm.