CN203685846U

CN203685846U - Ball bearing

Info

Publication number: CN203685846U
Application number: CN201420010611.XU
Authority: CN
Inventors: 方坤礼; 廖建平
Original assignee: Quzhou College of Technology
Current assignee: Quzhou College of Technology
Priority date: 2014-01-08
Filing date: 2014-01-08
Publication date: 2014-07-02
Anticipated expiration: 2024-01-08

Abstract

The utility model discloses a ball bearing. The ball bearing comprises a bearing outer ring and a bearing inner ring, wherein balls are arranged in a raceway between the bearing outer ring and the bearing inner ring; each retaining frame is inserted between every two adjacent balls. The ball bearing is characterized in that each retaining frame is an elastic cylindrical body; outward concave outer seat rings are arranged at the positions, corresponding to the balls and the retaining frames, of the bearing outer ring; inward concave inner seat rings are arranged at the positions, corresponding to the balls and the retaining frames, of the bearing inner ring. The ball bearing is simple and flexible in structure, reasonable in design and easy to manufacture and assemble; the manufacturing cost is reduced; through the retaining frames, namely the elastic cylindrical bodies, the rotational frictional resistance is low, the rotation is smooth, the bearing or rotating parts are not easily damaged, the service life of the bearing can be remarkably prolonged, and the stability of equipment operation is improved.

Description

A kind of ball bearing

Technical field

The utility model belongs to technical field of bearings, is specifically related to a kind of ball bearing.

Background technique

Bearing is in mechanical transmission course, to work the parts of fixing and reducing load friction factor, its major function is supported mechanical solid of rotation, mechanical load friction factor in order to reduction equipment in transmission process, by the difference of motion original paper frictional property, bearing can be divided into rolling bearing and sliding bearing, ball bearing is the one of rolling bearing, it is extremely extensive as conventional mechanical part purposes, rolling form generally has the inner ring interference fit close-fitting of fixed component and ball bearing, the outer ring of ball bearing with the axis hole interference fit close-fitting of rotatable parts, as various wheels, existing various ball bearing, metallic shim plate is set conventionally in raceway, as retainer, because the ratio of metallic shim plate is great, the dynamic resistance that retainer is moved in raceway is larger, frictional force strengthens and easily causes the raceway of bearing impaired, greatly reduce the working life of bearing.

Summary of the invention

For problems of the prior art, the purpose of this utility model is to provide a kind of ball bearing.

The utility model is realized by the following technical programs:

Described a kind of ball bearing, comprise bearing outer ring and bearing inner race, in raceway between described bearing outer ring and bearing inner race, be provided with ball, between adjacent ball, peg graft retainer is set, it is characterized in that described retainer is elastic columnar shape body, the position of the corresponding ball of described bearing outer ring and retainer is provided with outwards recessed outer race, and the position of the corresponding ball of described bearing inner race and retainer is provided with the inner race concaving.Elastic columnar shape body can make the ball of relative rigidity material in raceway, keep flexible separated state, guarantees in the time of axle generation relative movement, to keep ball to separate relatively uniformly in raceway between the each parts of bearing simultaneously.

Described a kind of ball bearing, is characterized in that the end wall that described elastic columnar shape body retainer is adjacent with ball is plane or outer convex surface or inner concave.The flat protruding or recessed end wall of the retainer of ball and elastic columnar shape body is intermeshing, to keep ball required fractional dose in raceway.

Described a kind of ball bearing, is characterized in that described elastic columnar shape body retainer inside is provided with the axial through bore for filling oiling agent.This axial through bore is for retainer in balance raceway and a relatively little opening is provided, makes retainer more easily insert raceway in the time of assembly manipulation.In axial through bore, be filled with oiling agent, to keep lubricating between inner member, the molybdenum disulfide that oiling agent selects grease to disperse conventionally.

Described a kind of ball bearing, is characterized in that the diameter of described elastic columnar shape body retainer is greater than the radial opening of outer race or inner race, is less than the diameter of ball.The length of this elastic columnar shape body retainer not only depends on the curvature of raceway, and also relevant with the resistance of axial deflection with the axial compression of elastic columnar shape body, the length of retainer also depends on the usage quantity of ball and required spacing.

Described a kind of ball bearing, is characterized in that elastic columnar shape body retainer sidewall surfaces and the medium position of inner race contact action between cylinder two-end-point, with outer race contact action at end position place, cylindrical sidewall two ends.

A kind of ball bearing of the utility model, simple in structure flexible, reasonable in design, be easy to manufacture and assemble, reduce manufacture cost, by the retainer of elastic columnar shape body is set, pivoting friction resistance is little, rotates smoothness, not fragile bearing or rotatable parts, working life that can significant prolongation bearing, the stability of raising equipment operation.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment 1 structural representation;

Fig. 2 is the partial enlarged drawing of Fig. 1;

Fig. 3 is the sectional drawing of A-A in Fig. 2;

Fig. 4 is the structural representation of retainer in embodiment 2;

Fig. 5 is the structural representation of retainer in embodiment 3;

In figure: 1-bearing outer ring, 2-bearing inner race, 3-ball, 4-retainer, 5-outer race, 6-inner race, 7-axial through bore.

Embodiment

Below in conjunction with Figure of description, the utility model is described in further detail, and provides embodiment.

Embodiment 1

As Figure 1-3, a kind of ball bearing of the utility model, comprise bearing outer ring 1 and bearing inner race 2, in raceway between bearing outer ring 1 and bearing inner race 2, be provided with

ball

3, 3 grafting of adjacent ball arrange retainer 4, retainer 4 is elastic columnar shape body, elastic material preferably adopts the synthetic plastic composition with teflon or nylon characteristic, this elastic material has lower proportion than the metallic shim plate of available technology adopting, so the dynamic resistance that retainer 4 moves in raceway is smaller, with respect to bearing, employing has flexible retainer 4, on axial direction compression and axial bending, relatively high resistance is provided, the end wall that elastic columnar shape body retainer 4 is adjacent with ball 3 is plane, the position of the corresponding ball 3 of bearing outer ring 1 and retainer 4 is provided with outwards recessed outer race 5, the position of the same corresponding ball 3 of bearing inner race 2 and retainer 4 is provided with the inner race 6 concaving, this bearing race is formed by bearing inner race 2, bearing outer ring 1, inner race 5 and outer race 6 adjacent surfaces, and elastic columnar shape body retainer 4 inside are provided with the axial through bore 7 for filling oiling agent.The diameter of elastic columnar shape body retainer 4 is greater than the radial opening of outer race 5 or inner race 6, be less than the diameter of ball 3, be a length to adapt to longitudinal raceway, and its flat end wall and adjacent ball 3 be engaged on two point of contact that separate, and guarantees retainer 4 not longitudinal bendings in raceway.Retainer 4 is along raceway longitudinal sliding motion, its sidewall surfaces and the medium position of inner race 6 contact actions between cylinder two-end-point, with outer race 5 contact actions at end position place, cylindrical sidewall two ends.

The utility model elastic columnar shape body retainer 4, its length can be set as the case may be, when guaranteeing that it is disposed on bearing, in normally loaded situation, can not bend or axial bending, be filled in the oiling agent in retainer 4 axial through bore 7, make the frictional loss of bearing maintain a lower value, to extend the working life of bearing.

Embodiment 2

As shown in Figure 4, itself and embodiment's 1 difference is only slightly the changing of shape of elastic columnar shape body retainer 4, the end wall of retainer 4 is arranged to convex surface, be arranged to convex shape, compared with embodiment 1, the retainer 4 of this kind of structure needs a larger space in raceway, and other structural relations are with embodiment 1.

Embodiment 3

As shown in Figure 5, itself and embodiment's 1 difference is only slightly the changing of shape of elastic columnar shape body retainer 4, and the end wall of retainer 4 is arranged to concave surface, compared with embodiment 1, the retainer 4 of this kind of structure needs space little in raceway, and other structural relations are with embodiment 1.

Claims

1. a ball bearing, comprise bearing outer ring (1) and bearing inner race (2), in raceway between described bearing outer ring (1) and bearing inner race (2), be provided with ball (3), between adjacent ball (3), peg graft retainer (4) is set, it is characterized in that described retainer (4) is elastic columnar shape body, the position of the corresponding ball of described bearing outer ring (1) (3) and retainer (4) is provided with outwards recessed outer race (5), and the position of the corresponding ball of described bearing inner race (2) (3) and retainer (4) is provided with the inner race (6) concaving.

2. a kind of ball bearing according to claim 1, is characterized in that the end wall that described elastic columnar shape body retainer (4) is adjacent with ball (3) is plane or outer convex surface or inner concave.

3. a kind of ball bearing according to claim 1 and 2, is characterized in that described elastic columnar shape body retainer (4) inside is provided with the axial through bore (7) for filling oiling agent.

4. a kind of ball bearing according to claim 1, is characterized in that the diameter of described elastic columnar shape body retainer (4) is greater than the radial opening of outer race (5) or inner race (6), is less than the diameter of ball (3).

5. a kind of ball bearing according to claim 1, it is characterized in that described elastic columnar shape body retainer (4) sidewall surfaces and the medium position of inner race (6) contact action between cylinder two-end-point, with outer race (5) contact action at end position place, cylindrical sidewall two ends.