CN202674034U

CN202674034U - Dustproof cover of bearing

Info

Publication number: CN202674034U
Application number: CN201220288158XU
Authority: CN
Inventors: 严烈平; 岑伟; 严烈忠; 沈树建; 郭杰; 宋丽君; 华伟国; 余红
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 discloses a dustproof cover of a bearing. The dustproof cover is used in the bearing. The bearing comprises a bearing outer ring, a bearing inner ring and rolling balls arranged between the bearing outer ring and the bearing inner ring, wherein the dustproof cover is sleeved between the bearing outer ring and the bearing inner ring, and is characterized by being provided with a decompression slot, which is conical and is arranged at a position at which the dustproof is matched with the bearing outer ring. The end part of the conical decompression slot is arced. According to the utility model, because the decompression slot is set to be conical, dust entering channels of the bearing is reduced, and moreover, for the bearing provided with the dustproof cover disclosed by the utility model, dust does not enter the inside of the bearing easily.

Description

Bearing dustproof cover

Technical field

A kind of bearing that relates to of the utility model relates in particular to a kind of bearing dustproof cover.

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 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.In order to prevent the distortion of dust cover and bearing outer ring, generally be provided with decompressing groove 511 in dust cover 51 and bearing outer ring 10 contacted positions.

Fig. 3 be decompressing groove shown in Figure 2 at the structural representation of K direction, see decompressing groove 51 from the K direction of Fig. 1, decompressing groove 511 is square groove, dust can enter in a large number, causes bearing on the low side working life.

Summary of the invention

The purpose of this utility model is to provide a kind of bearing dustproof cover, uses the bearing dust of this dust cover to be difficult for entering bearing inside.

A kind of bearing dustproof cover, be used in the bearing, bearing comprises bearing outer ring, bearing inner race, the ball between bearing outer ring and inner ring, described dust cover is set between bearing outer ring and the bearing inner race, it is characterized in that: described dust cover is provided with decompressing groove, this decompressing groove is located at the position that dust cover matches with bearing outer ring, the tapered shape of described decompressing groove.

In the technique scheme, the end camber of the cone-shaped of described decompressing groove.

The utility model is owing to be arranged to cone-shaped with decompressing groove, thereby the passage that makes dust enter bearing reduces, and also namely is difficult for entering bearing inside so that bearing dust of the present utility model is installed.

Description of drawings

Fig. 1 is the structural representation of existing bearing.

Fig. 2 is that I goes out enlarged view among Fig. 1.

Fig. 3 is that decompressing groove shown in Figure 2 is at the structural representation of K direction.

Fig. 4 is structural representation of the present utility model.

Fig. 5 is that II goes out enlarged view among Fig. 4.

Fig. 6 is that decompressing groove shown in Figure 5 is at the structural representation of K direction.

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. 4, 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.

In order to prevent dust cover 50 and bearing outer ring 10 distortion, generally be provided with decompressing groove 511 at dust cover 51 and bearing outer ring 10 contacted turnings.Decompressing groove 511 described in the utility model is provided with 9, and the interval is arranged on the described bearing dustproof cover.The width of the widest position of described decompressing groove 511 is 0.12.Compare with the bearing cap on the market, described decompressing groove 511 numbers have increased, but width has reduced.Or can effectively prevent dust dust cover 50 and bearing outer ring 10 distortion.Although the utility model has increased some manufacture difficulty, can make dust be difficult for entering bearing inside by decompressing groove 511.

During the bearing High Rotation Speed, can produce air suction, and described air suction direction P is parallel with X-axis.Bearing of the prior art, dust can be brought into to bearing inner by decompressing groove by air suction.

Decompressing groove 511 described in the utility model have first surface 512 with relative with first surface 512 second 513, first surface 512 and second 513 space that encloses are exactly decompressing groove 511, described second vertical with bearing centre axle X, the angle of described first surface and second formation is 35 °～45 °.So just make opening and the air suction direction P of decompressing groove 511 have larger angle, thereby when the bearing High Rotation Speed, avoid dust under the effect of air suction, to enter bearing inside by the opening of decompressing groove 511.The angle of described first surface and second formation is preferably 40 °, thereby so that decompressing groove 511 can prevent 10 distortion of dust cover 50 and bearing outer ring, not only can but also greatly reduce the probability that dust enters bearing.

Fig. 6 is that decompressing groove is at the structural representation of K direction, described decompressing groove 511 is cone shape hole, it is tabular also to be that described first surface 512 and second 513 are triangle, be provided with curved junction surface 514 between first surface 512 and second 514, and be that arc is connected between first surface 512 and the adjacent approximal surface; Also be that arc is connected between first surface 513 and the adjacent approximal surface.

Decompressing groove 511 is designed to cone shape hole, dust is entered as much as possible less, thereby increase the service life greatly.

Decompressing groove of the present utility model has been done good improvement, thereby enters bearing inside so that dust is difficult by decompressing groove.That is to say that the utility model minimizes the drawback of decompressing groove, do not affect the use function of decompressing groove, can prevent well that again dust from entering bearing inside.

Claims

1. bearing dustproof cover, be used in the bearing, bearing comprises bearing outer ring, bearing inner race, the ball between bearing outer ring and inner ring, described dust cover is set between bearing outer ring and the bearing inner race, described dust cover is provided with decompressing groove, it is characterized in that: this decompressing groove is located at the position that dust cover matches with bearing outer ring, the tapered shape of described decompressing groove.

2. bearing dustproof cover as claimed in claim 1 is characterized in that: the end camber of the cone-shaped of described decompressing groove.