CN206830662U - Plastic cage and ball bearing for vehicle gear box - Google Patents

Abstract

The utility model provides a kind of plastic cage and ball bearing for vehicle gear box, the plastic cage includes annular body and multiple pocket holes in the annular body, the ring edge in the pocket hole forms chamfering, axial length of the chamfering along the pocket hole is chamfering radical length, the ratio in a diameter of pocket aperture in the pocket hole, the chamfering radical length and the pocket aperture is 0.1~0.5.This is used for the plastic cage and ball bearing of vehicle gear box, pass through the design of the chamfering radical length to plastic cage and the ratio in pocket aperture, making plastic cage, size does not change under the high temperature conditions, plastic cage will not produce interference with rolling element, will not increase the torque and abrasion of ball bearing.

Description

Plastic cage and ball bearing for vehicle gear box

Technical field

It the utility model is related to a kind of plastic cage for vehicle gear box.

The utility model further relates to a kind of ball bearing for vehicle gear box.

Background technology

Bearing is to support and positioning rotating shaft, so that it can do expected rotational motion.Bearing, it generally can be divided into sliding axle Hold or rolling bearing, face contact movement is done in sliding bearing and rotating shaft, and rolling bearing and rotating shaft are done a little or linear contact lay motion.Typically For, because the contact area of rolling bearing is small, therefore there is smoother action effect.Rolling bearing is widely used in various productions Between industry, to be rotated.Rolling bearing includes component, the rolling elements such as inner ring, outer ring, rolling element, retainer and is arranged at outer ring Positioned between inner ring, and by retainer to carry out roll rotational.Rolling bearing is typically categorized as ball axle with rolling element pattern Holding, needle bearing or roller bearing, for ball bearing, appropriate lubricant body can be inserted, it can be lubricating oil or lubricating grease, Lubricant body is spread evenly across rolling element surface to reduce frictional resistance, it is ensured that the normal operation of rolling bearing.

In recent years because energy saving and environmental consciousness come back, vehicle and its each component part start toward light weight small size direction Development, the ball bearing for automobile industry gearbox similarly has with the load light-weighted design requirement of small size, therefore rolls Retainer in pearl bearing will usually select plastic cage, and plastic cage is in about 140 DEG C of its gearbox operating temperature A little change in size is had during the above, along with the demand that ball bearing volume diminishes, retainer is produced with rolling element Interference, increase torque and abrasion.

Utility model content

Technical problem to be solved in the utility model is to overcome the modeling of the prior art for vehicle gear box Expect retainer, change in size under the high temperature conditions, cause retainer to produce interference with rolling element, increase lacking for torque and abrasion Fall into, and a kind of plastic cage and ball bearing for vehicle gear box is provided.

The utility model solves above-mentioned technical problem by the following technical programs：

The utility model provides a kind of plastic cage for vehicle gear box, and it includes annular body and positioned at institute Multiple pocket holes in annular body are stated, the ring edge in the pocket hole forms chamfering, and the chamfering is axial along the pocket hole Length is chamfering radical length, a diameter of pocket aperture in the pocket hole, the chamfering radical length and the ratio in the pocket aperture For 0.1~0.5.

It is preferred that the material of the plastic cage is Nylon-66 reinforced with glass fiber.

It is preferred that the plastic cage is made up of injection molding mode.

The utility model additionally provides a kind of ball bearing for vehicle gear box, and it includes outer ring, inner ring, plastics guarantor Frame and multiple rolling elements are held, the plastic cage, multiple rolling elements are described between the outer ring, the inner ring As described in above-mentioned technical scheme, the rolling element is located in the pocket hole of the plastic cage plastic cage.

It is preferred that the ball bearing also includes seal member, the seal member be located at the outer ring, the inner ring it Between, the seal member is located at the both sides of the rolling element with the plastic cage.

On the basis of common sense in the field is met, above-mentioned each optimum condition, can be combined, produce the utility model respectively compared with Good example.

Positive effect of the present utility model is：

This is used for the plastic cage and ball bearing of vehicle gear box, passes through the chamfering radical length to plastic cage With the design of the ratio in pocket aperture, making plastic cage, size does not change under the high temperature conditions, and plastic cage is with rolling Body will not produce interference, will not increase the torque and abrasion of ball bearing, effectively extend the usage time of ball bearing.

Brief description of the drawings

Fig. 1 is the structural representation for the plastic cage that the utility model is used for vehicle gear box.

Fig. 2 is the structural representation for the ball bearing that the utility model is used for vehicle gear box.

Description of reference numerals

Plastic cage 1

Annular body 11

Pocket hole 12

Chamfering 13

Outer ring 2

Inner ring 3

Rolling element 4

Seal member 5

Embodiment

The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model Among described scope of embodiments.

As shown in figure 1, the utility model provides a kind of plastic cage 1 for vehicle gear box, it is main that it includes annular Body 11 and multiple pocket holes 12 in annular body 11, the ring edge in pocket hole 12 form chamfering 13, and chamfering 13 is along pocket hole 12 Axial length be chamfering radical length Y, the axial direction in wherein pocket hole 12 is the radial direction of overall ball bearing, pocket A diameter of pocket aperture Φ D, chamfering radical length Y and pocket aperture Φ D in hole 12 ratio are 0.1~0.5.

In more than 140 DEG C of temperature in degree Celsius, plastic cage 1 has a little change in size, causes plastic cage 1 and rolling There may be interference, torque increase for kinetoplast 4.Therefore, in the present embodiment, the ring edge in pocket hole 12 forms chamfering 13, and Chamfering radical length Y and pocket aperture Φ D ratio are arranged to 0.1~0.5.

New and old retainer is tested, measures torque value to confirm the effect of the newly-designed plastic cage of the utility model Fruit.Experiment has prepared following several retainers：

1., chamfering radical length Y and pocket aperture Φ D ratio is 0 to old-fashioned retainer；

2., chamfering radical length Y and pocket aperture Φ D ratio is 0 to old-fashioned retainer, and is toasted 3 hours through 140 DEG C；

1., chamfering radical length Y and pocket aperture Φ D ratio is 0.1 to new-type retainer；

2., chamfering radical length Y and pocket aperture Φ D ratio is 0.1 to new-type retainer, is toasted 3 hours through 140 DEG C；

3., chamfering radical length Y and pocket aperture Φ D ratio is 0.25 to new-type retainer；

4., chamfering radical length Y and pocket aperture Φ D ratio is 0.25 to new-type retainer, is toasted 3 hours through 140 DEG C；

5., chamfering radical length Y and pocket aperture Φ D ratio is 0.5 to new-type retainer；

6., chamfering radical length Y and pocket aperture Φ D ratio is 0.5 to new-type retainer, is toasted 3 hours through 140 DEG C.

Frame maintained above is mounted on rolling bearing and carries out torque test, and experimental condition is the inner ring 3 of rolling bearing, is placed In testing machine and outer ring 2 is rotated, its torque value is measured five times with tensiometer repeatedly, and takes it average, measurement result such as table 1.

Table 1

Pattern	Average torque value (gf-cm)
		Old-fashioned retainer is 1.	＜ 10
Old-fashioned retainer is 2.	210
		New-type retainer is 1.	＜ 10
New-type retainer is 2.	＜ 10
		New-type retainer is 3.	＜ 10
New-type retainer is 4.	＜ 10
		New-type retainer is 5.	＜ 10
New-type retainer is 6.	＜ 10

According to the old-fashioned retainer of results showed that through 140 DEG C baking 3 hours after torque value by increasing less than 10gf-cm To 210gf-cm, and torque value is without significant change after 140 DEG C are toasted 3 hours for new-type retainer, less than 10gf-cm.Thus may be used Learn, torque magnification and abrasion are increased caused by the newly-designed plastic cage of the utility model can effectively avoid high temperature influence Problem.

The material of plastic cage 1 is Nylon-66 reinforced with glass fiber.Wherein, the mass percent of glass fibre is 25%.

The plastic cage 1 of the present embodiment is the rolling element leading type retainer for rolling bearing, belongs to a kind of crown type Retainer, it is made in a manner of direct injection is molded.

As shown in Fig. 2 the utility model also provides a kind of ball bearing for vehicle gear box, it includes outer ring 2, interior Circle 3, plastic cage 1 and multiple rolling elements 4, plastic cage 1, multiple rolling elements 4 roll between outer ring 2, inner ring 3 Body 4 is located in the pocket hole 12 of plastic cage 1.Ball bearing also includes seal member 5, and seal member 5 is located at outer ring 2, inner ring 3 Between, seal member 5 is located at the both sides of rolling element 4 with plastic cage 1.

The utility model is not limited to above-mentioned embodiment, no matter making any change in its shape or structure, all falls within Within the scope of protection of the utility model.The scope of protection of the utility model is defined by the appended claims, this area Technical staff on the premise of without departing substantially from principle of the present utility model and essence, a variety of changes can be made to these embodiments More or change, but these changes and modification each fall within the scope of protection of the utility model.

Claims (5)

1. A kind of 1. plastic cage (1) for vehicle gear box, it is characterised in that：It includes annular body (11) and positioned at institute Multiple pocket holes (12) in annular body (11) are stated, the ring edge of the pocket hole (12) forms chamfering (13), the chamfering (13) it is chamfering radical length along the axial length of the pocket hole (12), a diameter of pocket aperture of the pocket hole (12) is described Chamfering radical length and the ratio in the pocket aperture are 0.1~0.5.
2. 2. it is used for the plastic cage (1) of vehicle gear box as claimed in claim 1, it is characterised in that：The plastics are kept The material of frame (1) is Nylon-66 reinforced with glass fiber.
3. 3. it is used for the plastic cage (1) of vehicle gear box as claimed in claim 1, it is characterised in that：The plastics are kept Frame (1) is made up of injection molding mode.
4. A kind of 4. ball bearing for vehicle gear box, it is characterised in that：It includes outer ring (2), inner ring (3), plastics holding Frame (1) and multiple rolling elements (4), the plastic cage (1), multiple rolling elements (4) are located at the outer ring (2), described Between inner ring (3), for the plastic cage (1) as described in any one of claims 1 to 3, the rolling element (4) is located at the modeling In the pocket hole (12) for expecting retainer (1).
5. 5. it is used for the ball bearing of vehicle gear box as claimed in claim 4, it is characterised in that：The ball bearing also includes Seal member (5), the seal member (5) between the outer ring (2), the inner ring (3), the seal member (5) with The plastic cage (1) is located at the both sides of the rolling element (4).