CN202674028U

CN202674028U - Bearing cone

Info

Publication number: CN202674028U
Application number: CN2012202881541U
Authority: CN
Inventors: 严烈平; 岑伟; 严烈忠; 沈树建; 郭杰; 高仕方; 韦新芳; 姚洪川; 吴知和
Original assignee: NINGBO MOGEN BEARING CO Ltd
Current assignee: NINGBO MOGEN BEARING CO Ltd
Priority date: 2012-06-19
Filing date: 2012-06-19
Publication date: 2013-01-16
Anticipated expiration: 2022-06-19

Abstract

The utility model provides a bearing cone, which is applied to the inside of a bearing. The bearing comprises a bearing cup, rollers and a shield, wherein the bearing cup is fitted with a bearing cone, the roller are positioned between the bearing cup and the bearing cone, the shield is sheathed between the bearing cup and the bearing cone, the bearing cone is provided with a contact surface connected with the shield, and the contact surface forms an inward inclining shape. The bearing cone has the advantages that the bearing cone is provided with the contact surface connected with the shield, the contact surface forms the inward inclining shape, and when fine dust enters into the bearing, the fine dust can be accumulated to the area formed by the inclining of the contact surface because the bearing is provided with the contact surface in the inward reclining shape, thereby realizing the buffering and seizure functions of the bearing; in addition, because the size of the dust entering into the bearing is fine, the service life of the bearing is ensured.

Description

A kind of bearing inner race

Technical field

The utility model relates to a kind of bearing, relates in particular to a kind of bearing inner race.

Background technique

Bearing is to work the parts of fixing and reducing the load friction factor in mechanical transmission course.Also can say, when other parts produce relative movement each other on axle, be used for reducing the fixing parts of friction factor and retainer shaft central position in the power transmission process.Bearing is a kind of very important component in the contemporary machinery.Its major function is the supported mechanical solid of rotation, in order to the mechanical load friction factor of reduction equipment in transmission process.

Such as the structural representation of Fig. 1 for bearing existing, bearing 100 comprises: bearing outer ring 10, the bearing inner race in bearing outer ring 10 20, be fixed on retainer 40 between bearing outer ring 10 and the bearing inner race 20, be fixed on the some balls 30 on the retainer 40 and be set in bearing outer ring 10 and bearing inner race 20 between dust cover 50, the first end 51 of dust cover 50 is fixed on the bearing outer ring 10, the second end 52 of dust cover 50 is fixed on the bearing inner race 20, enters bearing inside in order to can prevent dust.

Bearing sometimes need to be in the working environment work of many dusts, although general bearing all is provided with dust cover, but general small dust still enters bearing inside by dust cover and bearing inner race 20 contacting points, this is because bearing inner race 20 is smooth with the position that the second end 52 of dust cover 50 contacts, cause tiny dust still to be very easy to enter bearing inside, with the minimizing in working life of causing bearing, cost of idleness.

Summary of the invention

Order of the present utility model is to provide a kind of and is skewed, has buffering, retardation with the dust cover contact position, thereby guarantees the bearing inner race in the working life of bearing.

Of the present utility modelly provide a kind of bearing inner race, be used in the bearing, bearing comprise the bearing outer ring that cooperates with bearing inner race, the ball between bearing outer ring and the inner ring and be set in bearing outer ring and bearing inner race between dust cover, described bearing inner race is provided with the surface of contact that joins with dust cover, and this surface of contact is recessed to the central shaft of bearing.

Wherein, described surface of contact comprises that the central shaft with bearing has the first surface of angle [alpha] and has second of angle beta with Y-axis, and first surface is connected with second, and Y-axis is vertical with the central shaft of bearing.

Wherein, angle [alpha] is spent less than 15 greater than 5 degree.

Wherein, angle [alpha] is 10 degree.

Wherein, angle beta is spent less than 60 greater than 30 degree.

Wherein, angle beta is 45 degree.

Wherein, dust cover has the first end that fixes with bearing outer ring and the second end that fixes with bearing inner race.

The utility model is by being provided with the surface of contact that joins with dust cover at bearing inner race, this surface of contact is recessed to the central shaft of bearing, when having fine dust to enter bearing, owing to have recessed surface of contact, in the zone that the surface of contact that dust all can be deposited in is formed slopely, thereby can play buffering, retardation for bearing, the dust that enters like this bearing inside will be very little, thereby guarantee the working life of bearing.

Description of drawings

Fig. 1 is the structural representation of existing bearing.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is that the described bearing of Fig. 2 is at the partial enlarged drawing at A place.

Embodiment

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

Be the structural representation of the utility model bearing such as Fig. 2 and Fig. 3, bearing 100 comprises: bearing outer ring 10, the bearing inner race in bearing outer ring 10 20, be fixed on retainer 40 between bearing outer ring 10 and the bearing inner race 20, be fixed on the some balls 30 on the retainer 40 and be set in bearing outer ring 10 and bearing inner race 20 between dust cover 50, dust cover 50 is in order to prevent that dust from entering the inside of bearing.

Dust cover 50 has the first end 51 that matches with bearing outer ring 10 and the second end 52 that matches with bearing inner race 20, enters bearing inside in order to can prevent dust.

Bearing 100 is provided with bearing centre axle X, and this central shaft X is by the center of bearing outer ring 10 with bearing inner race 20, and the setting Y-axis vertical with central shaft X.Described bearing inner race 20 has the second end 52 contacted surface of contact 60 with dust cover 50, and surface of contact 60 is recessed to the bearing centre axle.In other words, the distance of described surface of contact 60 outsides and central shaft X is greater than the distance of described surface of contact 60 inboards with central shaft X.

This surface of contact 60 comprises with central shaft X having the first surface 61 of angle [alpha] and have second 62 of angle beta with Y-axis, first surface 61 is connected with second 62, and angle [alpha] is spent less than 15 greater than 5 degree, and angle [alpha] is preferably 10 degree, angle beta is spent less than 60 greater than 30 degree, and angle beta is preferably 45 degree.

Consult simultaneously Fig. 3, when having fine dust to enter bearing 100, owing to have recessed surface of contact 60 with the central shaft of bearing, dust all can be deposited in by in first surface 61 and second 62 zone that forms 70, thereby can play buffering, retardation for bearing, and the dust that enters bearing inside will be very little, thereby guarantee the working life of bearing.

Claims

1. bearing inner race, be used in the bearing, bearing comprise the bearing outer ring that cooperates with bearing inner race, the ball between bearing outer ring and the inner ring and be set in bearing outer ring and bearing inner race between dust cover, it is characterized in that: described bearing inner race is provided with the surface of contact that joins with dust cover, and this surface of contact is recessed to the central shaft of bearing.

2. bearing inner race as claimed in claim 1, it is characterized in that: described surface of contact comprises that the central shaft with bearing has the first surface of angle [alpha] and has second of angle beta with Y-axis, first surface is connected with second, and Y-axis is vertical with the central shaft of bearing.

3. bearing inner race as claimed in claim 2 is characterized in that: angle [alpha] greater than 5 degree less than 15 degree.

4. bearing inner race as claimed in claim 2 or claim 3, it is characterized in that: angle [alpha] is 10 degree.

5. bearing inner race as claimed in claim 2 is characterized in that: angle beta greater than 30 degree less than 60 degree.

6. such as claim 2 or 5 described bearing inner races, it is characterized in that: angle beta is 45 degree.