CN205533831U - Star cover in belt wheel groove - Google Patents

Abstract

The utility model relates to a star cover, especially a star cover in belt wheel groove. The utility model discloses set up the annular at the steel ball intracavity, the radius of annular is the same with the steel ball radius for steel ball and the fine laminating of star cover have increased lubricated effect, have reduced wearing and tearing, have also increased the atress ability of steel ball and star cover.

Description

A kind of inner race of band annular groove

Technical field

This utility model relates to a kind of inner race, the inner race of a kind of band annular groove.

Background technology

Existing constant velocity driving shaft assembly all includes inner race, and inner race is provided with steel ball chamber, during use, steel ball Move at steel ball intracavity., through using for a long time, often there is abrasion, to use in steel ball and inner race Impacting, the most even steel ball ruptures, and for this problem, simple dependence uses lubricating fluid to increase Add the problem that lubrication can not solve abrasion.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of reasonable in design, can reduce steel ball Wear and tear with inner race, the inner race device increased the service life.

This utility model includes inner race main body, axis hole, some steel ball chambeies, and described axis hole is located at inner race master In the middle of body, described steel ball chamber is for cylinder and is distributed on inner race body periphery, and its axis is in inner race main body Excircle on, described steel ball chamber is provided with annular groove along the middle part of inner race main body axial direction, and described annular groove is Hemispherical cell body also caves in inner race body interior.

Further, the radius of described hemispherical cell body is identical with steel ball radius.

Further, described steel ball chamber is 6 or 8, is distributed on inner race body periphery.

Further, described axis hole end is provided with annular slot.

The steel ball chamber of inner race can keep steel ball to move therein, and steel ball chamber is along inner race axial direction Centre position arranges ring-type hemispherical cell body, and the radius of hemispherical cell body is identical with the radius of steel ball, so Just so that the contact of steel ball and inner race forms face contact, add contact surface and connect so that steel ball and star Shape set is all not easy abrasion, extends service life.

This utility model compared with the existing technology has the following advantages and effect:

1, reduce the abrasion of steel ball and inner race, extend service life；

2, the ability to bear of steel ball and inner race is added；

3, maintenance maintenance is with low cost；

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the inner race structural representation of this utility model a kind of band annular groove.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is A-A sectional view.

Fig. 4 is annular slot schematic diagram.

Indicate and illustrate:

1-inner race main body 2-steel ball chamber 3-annular groove 4-axis hole 5-draw-in groove

Detailed description of the invention

Being described in further detail this utility model below in conjunction with embodiment, following example are to this reality With novel explanation, this utility model is not limited to following example.

Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 shows, the present embodiment include inner race main body 1, steel ball chamber 2, Axis hole 4, some steel ball chambeies 2 are distributed on the excircle of inner race main body 1, cylindrically shaped, cylindrical Steel ball chamber 2 offers annular groove 3 along the centre position of inner race main body axial direction, and annular groove 3 is ring-type hemisphere Shape cell body.After installation, steel ball and annular groove 3 are fitted, and changing point cantact is face contact, increases contact surface Long-pending, under the effect of lubricating oil, substantially improve lubricant effect and decrease steel ball and inner race main body 1 self Abrasion, add steel ball and the stress-bearing capability of inner race main body 1.

Embodiment 2: in the present embodiment, the radius of hemispherical cell body is identical with steel ball radius, steel ball and annular groove 3 Laminating more preferable, lubricating oil forms complete oil film between, further increases lubricating ability and anti- Wear resistance.

Embodiment 3: in the present embodiment, steel ball chamber 2 is 6 or 8.Can also arrange not according to actual needs Steel ball chamber with quantity.

Embodiment 4: in the present embodiment, the end of axis hole 4 is provided with annular slot 5.

Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components Shape, be named title etc. can be different.All according to structure, feature and the principle described in this utility model inventional idea The equivalence done or simple change, be all included in the protection domain of this utility model patent.This utility model Described specific embodiment can be made various amendment or supplement by person of ordinary skill in the field Or use similar mode to substitute, without departing from structure of the present utility model or surmount the claims Defined scope, all should belong to protection domain of the present utility model.

Claims (4)

1. the inner race of a band annular groove, it is characterized in that, including inner race main body, axis hole, some steel ball chambeies, described axis hole is located in the middle of inner race main body, described steel ball chamber is for cylinder and is distributed on inner race body periphery, its axis is on the excircle of inner race main body, and described steel ball chamber is provided with annular groove along the middle part of inner race main body axial direction, and described annular groove is hemispherical cell body and caves in inner race body interior.

The inner race of band annular groove the most according to claim 1, it is characterised in that the radius of described hemispherical cell body is identical with steel ball radius.

The inner race of band annular groove the most according to claim 1, it is characterised in that described steel ball chamber is 6 or 8, is distributed on inner race body periphery.

4. according to the inner race of the band annular groove described in any one of claim 1-3, it is characterised in that described axis hole end is provided with annular slot.