CN218207458U

CN218207458U - Split type low inertia ball bearing

Info

Publication number: CN218207458U
Application number: CN202221387628.8U
Authority: CN
Inventors: 沈艳; 叶震杰; 刘贵升; 袁玺
Original assignee: Wuxi Credible Turbocharger Co ltd
Current assignee: Wuxi Credible Turbocharger Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2023-01-03
Anticipated expiration: 2032-06-08

Abstract

The utility model relates to a split type low inertia ball bearing. In particular to a split type low-inertia ball bearing on a middle body wheel shaft of an automobile supercharger. The bearing comprises a long sleeve and two bearings, wherein the bearings comprise an inner ring and an outer ring, and balls are uniformly distributed between the inner ring and the outer ring in the circumferential direction. The method is characterized in that: the inner circles adjacent to the two ends of the long sleeve are provided with annular inner bulges. And a spring is arranged between the two annular inner bulges, and the bearings are arranged in the long sleeves at the outer sides of the two annular inner bulges. By adopting the split type low-inertia ball bearing, the production cost can be reduced, and the working efficiency of the supercharger can be improved.

Description

Split type low inertia ball bearing

Technical Field

The utility model relates to a bearing. In particular to a split type low-inertia ball bearing on a middle body wheel shaft of an automobile supercharger.

Background

As known in the automobile supercharger manufacturing industry, ball bearings used on intermediate wheel shafts of the existing automobile superchargers are all integral ball bearings. The bearing comprises an outer sleeve as an outer ring and an inner sleeve as an inner ring, wherein retainers are arranged between two ends of the inner sleeve and the outer sleeve, and balls are uniformly distributed in the circumferential direction of the retainers. Wherein the inner sleeve is tightly matched with the wheel shaft of the intermediate body of the automobile supercharger. Because the inner sleeve is tightly matched with the axle of the automobile supercharger intermediate body, the axle also acts as the inner sleeve of the inner ring rotates along with the inner sleeve in the high-speed rotation process during working, so that the rotary inertia of the bearing is larger. However, as the rotational inertia is large, more energy is consumed, and the working efficiency of the supercharger is reduced. And because the ball bearing contains the inner sleeve, use steel more, make manufacturing cost higher.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to overcome above not enough, provide a split type low inertia ball bearing. By adopting the ball bearing, the production cost can be reduced, and the working efficiency of the supercharger can be improved.

The utility model discloses the above-mentioned problem that solves has following technical scheme to realize:

the utility model discloses a split type low inertia ball bearing, including long sleeve and two bearings, the bearing is by inner circle and outer lane, and the equipartition has the ball between the circumference of inner circle and outer lane. The method is characterized in that: the inner circles adjacent to the two ends of the long sleeve are provided with annular inner bulges. And a spring is arranged between the two annular inner bulges, and the bearings are arranged in the long sleeves at the outer sides of the two annular inner bulges.

The annular inner bulge comprises a fixed annular inner bulge and a movable annular inner bulge. The fixed ring-shaped inner bulge and the long sleeve are formed into a whole. The inner circle of the long sleeve at the end of the movable annular inner bulge is provided with an annular step, and the inner diameter of the long sleeve outside the annular step is larger than that of the long sleeve inside. The movable annular inner bulge is detachably arranged outside the annular step.

The cross section of the inner bulge of the movable ring is rectangular, a circumferential step is arranged on one side of the inner bulge adjacent to the spring, and one end, adjacent to the circumferential step, of the spring abuts against the circumferential step.

According to the technical scheme, the inner circles adjacent to the two ends of the long sleeve are provided with the annular inner bulges. And a spring is arranged between the two annular inner bulges, and the bearings are arranged in the long sleeves at the outer sides of the two annular inner bulges. Compared with the integral ball bearing in the background art, the inner sleeve is replaced by the spring, so that the rotational inertia of the bearing is greatly reduced. And the reduction of the rotational inertia consumes less energy, thereby improving the working efficiency of the supercharger. And because the ball bearing does not contain an inner sleeve, the using amount of steel is reduced, thereby reducing the production cost.

Drawings

Fig. 1 is a schematic structural view of a split type low inertia ball bearing of the present invention;

fig. 2 is a use state diagram of the split low inertia ball bearing of the present invention.

Detailed Description

As shown in fig. 1, the split type low inertia ball bearing of the present invention includes a long sleeve 2 and two bearings. The inner circles adjacent to the two ends of the long sleeve 2 are both provided with annular inner bulges. And a spring 4 is arranged between the two annular inner bulges, and two ends of the spring 4 are respectively propped against the corresponding annular inner bulges. The bearings are arranged between the two annular inner bulges and the corresponding end parts of the long sleeve 2, the bearings are ball bearings and comprise inner rings 7 and outer rings 6, and balls are uniformly distributed between the inner rings 7 and the outer rings 6 in the circumferential direction. The annular inner bulge comprises a fixed annular inner bulge 5 and a movable annular inner bulge 3. The fixed annular inner bulge 5 and the long sleeve 2 are cast into a whole. An annular step 31 is processed on the inner circle of the long sleeve 2 at the end of the movable annular inner bulge 3, and the inner diameter of the long sleeve 2 outside the annular step 31 is larger than the inner side of the long sleeve. The movable annular inner bulge 3 is detachably arranged outside the annular step 31. The cross section of the movable annular inner protrusion 3 is rectangular, and a circumferential step 32 is machined on one surface of the movable annular inner protrusion, which is adjacent to the spring 4. One end of the spring 4 adjacent to the circumferential step 32 rests on the circumferential step 32.

As shown in fig. 2, in the use state, the split low inertia ball bearing of the present invention is installed on the wheel shaft 10 in the intermediate housing 9 between the turbine 8 and the impeller 7 of the automobile supercharger.

The utility model discloses compare with the integral ball bearing among the background art, replaced the inner skleeve by spring 4, greatly reduced the inertia of bearing.

Claims

1. The split type low-inertia ball bearing comprises a long sleeve (2) and two bearings, wherein each bearing comprises an inner ring (7) and an outer ring (6), and balls are uniformly distributed between the inner ring (7) and the outer ring (6) in the circumferential direction; the method is characterized in that: the inner circles adjacent to the two ends of the long sleeve (2) are provided with annular inner bulges; a spring (4) is arranged between the two annular inner bulges, and the bearings are arranged in the long sleeves (2) on the outer sides of the two annular inner bulges.

2. The split low inertia ball bearing of claim 1, wherein: the annular inner bulge comprises a fixed annular inner bulge (5) and a movable annular inner bulge (3); the fixed annular inner bulge (5) and the long sleeve (2) are formed into a whole; an annular step (31) is arranged on the inner circle of the long sleeve (2) at the end of the movable annular inner bulge (3), and the inner diameter of the long sleeve (2) at the outer side of the annular step (31) is larger than that of the inner side of the long sleeve; the movable annular inner bulge (3) is detachably arranged outside the annular step (31).

3. The split low inertia ball bearing of claim 2, wherein: the cross section of the movable annular inner bulge (3) is rectangular, and a circumferential step (32) is arranged on one side of the movable annular inner bulge adjacent to the spring (4); one end of the spring (4) adjacent to the circumferential step (32) is propped against the circumferential step (32).