CN107228129B

CN107228129B - Bearing with retainer

Info

Publication number: CN107228129B
Application number: CN201610168043.XA
Authority: CN
Inventors: 张哲纲; 刘家铭
Original assignee: Hiwin Technologies Corp
Current assignee: Hiwin Technologies Corp
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2021-05-11
Anticipated expiration: 2036-03-23
Also published as: CN107228129A

Abstract

The invention discloses a bearing with a retainer, comprising: an inner ring having a rolling groove; an outer ring sleeved on the outer periphery of the inner ring and provided with a rolling groove corresponding to the rolling groove, wherein the rolling groove and the rolling groove form a load path; a plurality of balls; the ring-shaped retainer is provided with a plurality of containing holes for the balls, each containing hole is composed of a plurality of corresponding U-shaped half retaining parts, U-shaped openings of the two half retaining parts which are oppositely arranged are staggered, the two half retaining parts are respectively provided with corresponding U-shaped half oil grooves, the two half oil grooves form an oil groove, and a lubricating oil storage space is formed between the balls and the oil groove. The openings of the half-holding parts arranged on the retainer are designed in a mutually staggered manner so as to disturb the flow of the lubricating oil in the containing hole of the retainer, and the design of each half-oil groove can lead the lubricating oil to be reserved in an oil groove storage space formed by the balls and the half-oil grooves so as to lead the balls to be fully lubricated.

Description

Bearing with retainer

Technical Field

The present invention relates to a bearing, and more particularly, to a bearing having a retainer.

Background

Referring to fig. 1 and 2, the conventional bearing includes an inner ring 1, an outer ring 2, a retainer 3 and a plurality of balls 4, the outer ring 2 is disposed at the periphery of the inner ring 1 at intervals, the retainer 3 is disposed between the inner ring 1 and the outer ring 2, the retainer 3 is composed of two annular sheets 31 having a plurality of recesses 311, the two annular sheets 31 are connected and fixed by a plurality of fasteners G, the recesses 311 of the two annular sheets 31 form a plurality of receiving holes 32 for the balls 4, the balls 4 are rotatably disposed on the retainer 3 in the receiving holes 32 and contact with the inner ring 1 and the outer ring 2, however, the holding surfaces 321 of the receiving holes 32 are disposed corresponding to the surface profiles of the balls 4, so that no lubricant can be stored between the holding surfaces 321 and the balls 4, the balls 4 contact and rub against the rolling grooves 21 of the rolling grooves 11 and the outer ring 2 of the inner ring 1 during operation, if the friction force is large and the lubricity is poor, the generated friction heat is high, so that the precision and the service life of the bearing are greatly reduced.

Disclosure of Invention

An object of the present invention is to provide a bearing with a retainer having a lubricating oil reservoir structure.

In order to achieve the above purpose, the solution of the invention is:

a bearing with a retainer, comprising: an inner ring having a rolling groove;

the outer ring is sleeved on the outer periphery of the inner ring and is provided with a rolling groove corresponding to the rolling groove, and the rolling groove form a load path; a plurality of balls; the ring-shaped retainer is provided with a plurality of containing holes for the balls, each containing hole is composed of a plurality of corresponding U-shaped half retaining parts, the U-shaped openings of the two half retaining parts which are oppositely arranged are arranged in a staggered mode, two half retaining parts are respectively provided with corresponding U-shaped half oil grooves, the two half oil grooves form an oil groove, and a lubricating oil storage space is formed between each ball and the oil groove.

Preferably, the half-holding portions are provided with two half-holding surfaces respectively opposite to the housing hole, one end of each half-holding surface is connected to the half oil groove, the other end of each half-holding surface extends in the radial direction and is arranged in a tapered manner, and the two half-holding surfaces of one housing hole form a v shape so as to hold the ball in the housing hole.

Preferably, the semi-oil groove is a quarter circle, and the radius of the circle is 0.5-2 mm.

Preferably, the oil groove is semicircular.

By adopting the structure, the bearing with the retainer is designed by the mutual staggering of the openings of the half retaining parts arranged on the retainer, so that the lubricating oil is disturbed to flow in the containing hole of the retainer, and the lubricating oil can be retained in the oil groove storage space formed by the balls and the half oil grooves by the design of each half oil groove, so that the balls are fully lubricated.

Drawings

Fig. 1 is a system diagram of a conventional bearing with a retainer.

Fig. 2 is a sectional view of a conventional bearing with a retainer.

FIG. 3 is a system diagram of a bearing with a retainer of the present invention.

Fig. 4 is an assembled view of the bearing with the retainer of the present invention.

Fig. 5 is a sectional view of a bearing with a retainer according to the present invention.

Wherein:

Prior Art

1 inner ring

11 rolling channel

2 outer ring

21 rolling groove

3 holder

31 annular sheet

311 recess

32 containing hole

321 holding surface

4 ball

G fixing piece

The invention

1 inner ring

11 rolling channel

2 outer ring

21 rolling groove

3 holder

31 receiving hole

311 half holding part

3111 opening

3112 semi-retentive surface

312 oil groove

312A, 312B semi-oil groove

4 ball

90 storage space.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

Referring to fig. 3 to 5, the present invention is a bearing with a retainer, including: an inner ring 1 having a rolling groove 11; an outer ring 2 sleeved on the outer periphery of the inner ring 1 and provided with a rolling groove 12 corresponding to the rolling groove 11, wherein the rolling groove 11 and the rolling groove 12 form a load path; a plurality of balls 4; a ring-shaped retainer 3, which is provided with a plurality of accommodating holes 31 for the balls 4, each accommodating hole 31 is composed of a plurality of corresponding U-shaped half-retaining portions 311, and the U-shaped openings 3111 of the two half-retaining portions 311 disposed opposite to each other are disposed in a staggered manner, as shown in fig. 3, the half-retaining portions 311 are respectively provided with corresponding U-shaped

half oil grooves

312A, 312B, in the embodiment, the

half oil grooves

312A, 312B are a quarter circle, the radius of the circle is 0.5-2 mm, the range is defined to enable the half-retaining portions 311 to maintain a better strength, so as to avoid deformation or breakage of the half-retaining portions 311 caused by extrusion when the balls 4 run in the accommodating holes 31, the

half oil grooves

312A, 312B constitute an oil groove 312, in the embodiment, the oil groove 312 is a half circle, and a lubricating oil storage space 90 is formed between the balls 4 and the oil groove 312. The half-retaining portion 311 is provided with two half-retaining surfaces 3112 respectively opposed to the housing hole 31, one end of each half-retaining surface 3112 is connected to the

half oil grooves

312A, 312B, and the other end is extended in the radial direction and tapered, and both half-retaining surfaces 3112 of one housing hole 31 are formed in a v-shape to retain the ball 4 in the housing hole 31.

In summary, the bearing with the retainer of the present invention has not been found to be practical, and in addition, the characteristic techniques disclosed in the embodiments of the present invention have not been found in the publications before application, nor have they been disclosed for use, and not only have the above-mentioned effects improvement, but also have the non-negligible additional effects, therefore, the novelty and the improvements of the present invention are all in accordance with the provisions of the patent law, and the invention is applied by the following law, and the application of the invention patent is earnestly examined and granted for the right-hand patents, and the sense of reality is good.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A bearing having a retainer, comprising:

an inner ring having a rolling groove;

the outer ring is sleeved on the outer periphery of the inner ring and is provided with a rolling groove corresponding to the rolling groove, and the rolling groove form a load path;

a plurality of balls;

a ring-shaped retainer is provided with a plurality of containing holes for arranging the balls, each containing hole is composed of a plurality of corresponding U-shaped half retaining parts, the U-shaped openings of the two half retaining parts which are oppositely arranged are arranged in a staggered mode, two half retaining parts are respectively provided with corresponding U-shaped half oil grooves, the two half oil grooves form an oil groove, a lubricating oil storage space is formed between the balls and the oil groove, the half retaining parts are respectively provided with two half retaining surfaces corresponding to the containing holes, one end of each half retaining surface is connected with the half oil groove, the other end of each half retaining surface extends in the radial direction and is arranged in a tapered mode, and the two half retaining surfaces of one containing hole form a 'dogbone' shape so as to retain the balls in the containing holes.

2. The bearing with retainer as claimed in claim 1, wherein: the semi-oil groove is a quarter circle, and the radius of the circle is 0.5-2 mm.

3. The bearing with the retainer as set forth in claim 2, wherein: the oil groove is semicircular.