CN218953853U

CN218953853U - Bearing axial play adjusting structure

Info

Publication number: CN218953853U
Application number: CN202222778116.0U
Authority: CN
Inventors: 聂鹏举; 刘辉; 朱勇民; 徐刚
Original assignee: Shenzhen Kelier Intelligent Control Technology Co ltd
Current assignee: Shenzhen Kelier Intelligent Control Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-05-02
Anticipated expiration: 2032-10-21

Abstract

The utility model provides a bearing axial play adjusting structure, wherein an upper wave pad and a lower wave pad are sleeved between the axial plays of a motor bearing, the upper wave pad and the lower wave pad replace springs, the single-piece wave pad is simpler to install, two sections are separated and elastically designed, the service life is longer, and the single-piece design of the wave pad reduces the problems of abnormal sound and noise caused by stress dislocation of spring rings and the like; meanwhile, the bearing sleeve is matched, the upper bearing and the lower bearing can be well fixed by the bushing and the bearing sleeve, so that the concentricity precision of the shaft core and the upper bearing and the lower bearing is greatly improved, and the vibration noise of the motor is reduced.

Description

Bearing axial play adjusting structure

Technical Field

The utility model relates to the technical field of motors, in particular to a bearing axial play adjusting structure.

Background

Besides the rotating speed of the motor, the problem of motor sound is also an important factor in market consideration, the material and performance of the bearings can greatly influence the motor sound, and the adjustment of the axial play between the bearings is also an important factor affecting the motor sound.

The existing high-speed brushless motor on the market basically adjusts axial play of a bearing by a spring, but due to elastic memory, the spring elastic material is easy to fatigue, service life is reduced, abnormal sound occurs due to dislocation of a spring ring, and the like.

Disclosure of Invention

In view of the above, the present utility model provides a bearing axial play adjusting structure, which aims at the problems in the prior art and designs an elastic wave pad to adjust axial play, thereby solving the problems in the prior art.

The utility model aims at realizing the following technical scheme:

the bearing axial play adjusting structure comprises a shaft core, an upper bearing and a lower bearing, wherein the upper bearing and the lower bearing are used for rotating a fixed shaft core and are fixed on the shaft core, a bushing, an upper gasket, an upper wave pad, a lower gasket and a lower wave pad are further arranged between the upper bearing and the lower bearing, the bushing is fixed on the shaft core and props against the upper bearing and the lower bearing up and down, a convex limiting step is arranged in the middle of the bushing, the upper gasket is sleeved on the upper side of the bushing limiting step and is positioned on the lower side of the upper bearing, and the upper wave pad is sleeved on the upper side of the bushing limiting step and is positioned on the lower side of the upper gasket;

the lower gasket sleeve is arranged on the lower side of the lining limiting step and is positioned on the upper side of the lower bearing, and the lower wave pad sleeve is arranged on the lower side of the lining limiting step and is positioned on the upper side of the lower gasket.

Furthermore, bearing sleeves are further arranged on the outer sides of the upper bearing and the lower bearing, and the bearing sleeves are tightly matched and sleeved on the outer sides of the upper bearing and the lower bearing.

The utility model has the beneficial effects that:

the upper wave pad and the lower wave pad are sleeved between the axial clearance of the motor bearing, the upper wave pad and the lower wave pad replace springs, the single-piece wave pad is simpler to install, the two sections are separated and elastically designed, the service life is longer, and the problem of abnormal sound and noise caused by stress dislocation of spring rings is reduced due to the single-piece design of the wave pad;

meanwhile, the bearing sleeve is matched, the upper bearing and the lower bearing can be well fixed by the bushing and the bearing sleeve, so that the concentricity precision of the shaft core and the upper bearing and the lower bearing is greatly improved, and the vibration noise of the motor is reduced.

Drawings

FIG. 1 is an axial cross-sectional schematic view of a bearing axial lash adjustment structure of the present utility model;

fig. 2 is a schematic diagram illustrating the disassembly of the axial play adjusting structure of the bearing according to the present utility model.

The reference numerals are explained as follows:

the shaft core is 1, the upper bearing is 2, the lower bearing is 3, the bushing is 4, the upper gasket is 5, the upper wave pad is 6, the lower gasket is 7, the lower wave pad is 8, the limit step is 9, and the bearing sleeve is 10.

Detailed Description

Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

In order to further improve the design of the bearing axial play adjusting structure, the specific content of the utility model is as follows.

Referring to fig. 1 and 2, an embodiment of the present utility model is a bearing axial play adjusting structure, including a shaft core 1, an upper bearing 2 and a lower bearing 3 for rotating the shaft core 1 and fixed on the shaft core 1, and importantly, a bushing 4, an upper gasket 5, an upper wave pad 6, a lower gasket 7 and a lower wave pad 8 are further disposed between the upper bearing 2 and the lower bearing 3, the bushing 4 is fixed on the shaft core 1 and supports against the upper bearing 2 and the lower bearing 3 up and down, a protruding limit step 9 is disposed in the middle of the bushing 4, the upper gasket 5 is sleeved on the upper side of the limit step 9 of the bushing 4 and is located on the lower side of the upper bearing 2, and the upper wave pad 6 is sleeved on the upper side of the limit step 9 of the bushing 4 and is located on the lower side of the upper gasket 5;

the lower gasket 7 is sleeved on the lower side of the limiting step 9 of the bushing 4 and is positioned on the upper side of the lower bearing 3, and the lower wave pad 7 is sleeved on the lower side of the limiting step 9 of the bushing 4 and is positioned on the upper side of the lower gasket 7;

the design is that the upper wave pad and the lower wave pad replace springs, the single wave pad is simpler to install, two sections of the upper wave pad and the lower wave pad are separated and are elastically designed, the service life is longer, and the problem that abnormal sounds and noise are caused by stress dislocation of spring rings and the like is solved by the single wave pad design; the upper and lower wave pads are propped against the upper gasket 5 and the lower gasket 7, and then are propped against the outer rings of the upper bearing 2 and the lower bearing 3, so that the axial clearance between the outer rings of the upper bearing 2 and the lower bearing 3 relative to the inner rings is adjusted.

The further design is that the bearing sleeve 10 is also arranged on the outer sides of the upper bearing 2 and the lower bearing 3, the bearing sleeve 10 is tightly sleeved on the outer sides of the upper bearing 2 and the lower bearing 3, the bushing 4 and the bearing sleeve 10 are matched with the design of the bearing sleeve 10, the upper bearing and the lower bearing can be well fixed, the concentricity precision of the shaft core 1 and the upper bearing and the lower bearing can be greatly improved, and the vibration noise of a motor is reduced.

The above description is for the purpose of illustrating the embodiments of the present utility model and is not to be construed as limiting the utility model, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a bearing axial play adjusts structure, includes the axle core for rotate fixed axle core and fix upper bearing and the lower bearing on the axle core, its characterized in that: the upper bearing and the lower bearing are also provided with a bushing, an upper gasket, an upper wave pad, a lower gasket and a lower wave pad, the bushing is fixed on the shaft core and props against the upper bearing and the lower bearing up and down, a convex limiting step is arranged in the middle of the bushing, the upper gasket is sleeved on the upper side of the bushing limiting step and is positioned on the lower side of the upper bearing, and the upper wave pad is sleeved on the upper side of the bushing limiting step and is positioned on the lower side of the upper gasket;

2. The bearing axial play adjustment structure according to claim 1, characterized in that: the outer sides of the upper bearing and the lower bearing are also provided with bearing sleeves, and the bearing sleeves are tightly matched and sleeved outside the upper bearing and the lower bearing.