CN201916349U

CN201916349U - Bearing

Info

Publication number: CN201916349U
Application number: CN2010202882795U
Authority: CN
Inventors: 李德荣; 李俊伟
Original assignee: NINGBO GOOT BEARING CO Ltd
Current assignee: NINGBO GOOT BEARING CO Ltd
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2011-08-03
Anticipated expiration: 2020-08-06

Abstract

The utility model discloses a bearing which comprises an outer ring, an inner ring, a rolling body and a retainer, wherein the inner surface circumference of the outer ring of the bearing is provided with a radial raceway; the rolling body rolls in the raceway radially arranged on an outer ring groove; the annular retainer is arranged between the inner ring and the outer ring; the outer surface circumference of the inner ring of the bearing is provided with a radial raceway; labyrinth grooves are fixed at two sides of the radial raceway; and rubber seal rings can be in contact with the rotary labyrinth grooves of the inner ring of the bearing. The bearing has simple and reasonable structure, novel design, excellent dustproof effect and sealing performance. Inner lip mouths of a pair of rubber seal rings fixedly arranged in the outer ring of the bearing are in contact with the labyrinth grooves fitted in the inner ring, the sealing of the inner ring of the bearing is realized through the interference fit of the inner lip mouths of the rubber seal rings and the labyrinth grooves of the inner ring, therefore, the waste such as dust can be effectively prevented from entering an inner cavity of the bearing by the sealing structure, and the blocking of the raceway is eliminated.

Description

A kind of bearing

Technical field

The utility model relates to a kind of bearing, is specially a kind of bearing of thin-walled type.

Background technique

Bearing is a kind of important base components that is widely used in all kinds of machineries, is used for bearing load and makes rotation, swing or linear reciprocating motion.Bearing mainly is made of inner ring, outer ring, rolling element, retainer and seal ring, and inner ring is installed on the axle usually and rotates together with the axis; The outer ring play supporting role in bearing support or in the mechanical part housing usually; Rolling element rolls between inner ring and outer ring, and its size and quantity directly influence the bearing capacity of bearing; The effect of retainer is with one group of rolling element spaced at equal intervals in the bearing, and the guiding rolling element moves on correct track, improves the bearing internal load and distributes and greasy property.The Sealing role is; Sealing prevents that grease leakage and introduced contaminants, moisture from entering bearing.

At present, be applied to high speed rotating and the bearing higher to seal request, its structure is that the inner ring open type is used the dust cover sealing, inner ring with and dust cover between have the gap, therefore be difficult to eliminate dust and enter in the raceway, cause the raceway obstruction and be stuck.Simultaneously, the lubricating grease in the raceway can run off in the gap, is that bearing often generates heat because of lacking lubricating grease, even burns.The thin-walled type bearing (koyo) of existing foreign sales, it is an open type band dustproof cover structure; Concrete structure is: the metal dust cover is pressed on the outer ring Spielpassung between inner ring and the dust cover.All there is poor sealing performance in said structure, and dust easily enters in the raceway, and causes raceway to block and be stuck; Thereby influenced the normal use of bearing.

At present, also do not solve the problems of the technologies described above better technological scheme.

The model utility content

The purpose of this utility model is to overcome the problems referred to above that exist in the background technique, and a kind of improvement of bearing is provided, and the bearing after the improvement should have simple and reasonable, novel in design, good seal performance, dustproof, the good characteristics of leakage fat performance; Simultaneously, can prevent effectively that internal lubrication fat from leaking and outside foreign material are invaded.

The utility model proposes following technological scheme:

A kind of bearing comprises outer ring, inner ring, rolling element and retainer, and the internal surface circumferential surface of described bearing outer ring is provided with radially raceway, and rolling element rolls in the raceway that outer ring raceway is disposed radially, and annular retainer is arranged between the inside and outside circle; The outer surface circumferential surface of described bearing inner race is provided with radially raceway, the intrinsic maze trough in the both sides of raceway radially, and described rubber seal touches mutually with rotating bearing inner race maze trough.

Described bearing inner race is provided with the maze trough structure, and rubber seal embeds in the inner ring maze trough, contacts with maze trough.

By being fixedly arranged on a pair of rubber seal between the inside and outside circle of bearing, rubber seal contacts with the maze trough of inner ring, and there is slight interference to cooperate to realize sealing to bearing inner race, this sealing configuration can prevent effectively that dust from entering in the bearing and eliminate the obstruction of raceway by the inner lip of rubber seal back-up ring and inner ring maze trough.

The cross section of described annular maze trough is " V " type structure.The purpose of " V " type of setting groove is that rubber seal is embedded in the maze trough of inner ring, plays sealing, dustproof effect.

Described rubber seal is made of the rubber seal and the skeleton of ring-type, forms maze-type structure between this elastic seal ring and the inner ring maze trough.

The beneficial effects of the utility model are: simple and reasonable, novel in design, have good dustproof effect and a sealability.Be fitted in the maze trough of inner ring by the inner lip contact that is fixedly arranged on a pair of rubber seal in the bearing outer ring, the inner lip of rubber seal cooperates the sealing that realizes bearing inner race with the maze trough slight interference of inner ring, and this sealing configuration can prevent effectively that rubbish such as dust from entering bearing cavity and eliminate the obstruction of raceway.In addition, the utility model also is superior to open type band dustproof cover structure at dustproof, leakage fat aspect of performance, can prevent effectively that internal lubrication fat from revealing and outside foreign material are invaded.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of Fig. 1 middle (center) bearing inner ring.

Embodiment

Below, the technical solution of the utility model is described further by Figure of description.

As shown in Figure 1, 2, a kind of bearing, comprise outer ring 1, inner ring 2, rolling element and retainer 6, the internal surface circumferential surface of described bearing outer ring is provided with radially raceway, rolling element is installed in the raceway that the outer ring is disposed radially, and annular retainer is arranged between outer ring, the inner ring rolling element is evenly distributed; The outer surface circumferential surface of described bearing inner race 2 is provided with radially raceway 5, and radially the both sides of raceway 5 have maze trough, and described rubber Mi Quan embeds in the annular seal groove of inner ring.

The outer surface of described bearing inner race is provided with the ring-type maze trough, and described rubber seal embeds in this ring-type maze trough.

As further improvement of the utility model, the cross section of described annular maze trough is " V " type structure.

Further improve as of the present utility model, described rubber seal is made of the rubber seal 3 and the skeleton 4 of ring-type, forms maze-type structure between this elastic seal ring and the inner ring maze trough.

Inner lip by being fixedly arranged on a pair of rubber seal between the inside and outside circle of bearing contacts with maze trough on the outer peripheral surface of inner ring, cooperate the sealing that realizes bearing inner race by this inner lip to rubber seal with inner ring maze trough slight interference, this sealing configuration can prevent effectively that rubbish such as dust from entering bearing cavity and eliminate the obstruction of raceway.In addition, the utility model also is superior to open type band dustproof cover structure at dustproof, leakage fat aspect of performance, can prevent effectively that internal lubrication fat from revealing and outside foreign material are invaded.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can not depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. bearing, comprise outer ring (1), inner ring (2), rolling element and retainer (6), the internal surface circumferential surface of described bearing outer ring is provided with radially raceway, and rolling element rolls in the raceway that outer ring raceway is disposed radially, and annular retainer is arranged between the inside and outside circle; It is characterized in that: the outer surface circumferential surface of described bearing inner race (2) is provided with radially raceway (5), and radially the both sides of raceway (5) have maze trough, and described rubber seal touches mutually with rotating bearing inner race maze trough.

2. bearing according to claim 1 is characterized in that: the outer surface of described bearing inner race is provided with the ring-type maze trough, and described rubber seal embeds in this ring-type maze trough.

3. bearing according to claim 1 and 2 is characterized in that: the cross section of described annular maze trough is " V " type structure.

4. bearing according to claim 3 is characterized in that: described rubber seal is made of the rubber seal (3) and the skeleton (4) of ring-type, forms maze-type structure between this elastic seal ring and the inner ring maze trough.