CN219420437U - Bearing fixing structure of dry-wet motor - Google Patents

Abstract

The utility model discloses a bearing fixing structure of a wet and dry motor, which comprises a bearing chamber, wherein a bearing is arranged in the bearing chamber, a spring piece is arranged between the bearing and the bearing chamber, and the spring piece is made of elastic stainless steel. The utility model has the beneficial effects that: the stainless steel material has good corrosion resistance, is convenient to store and low in cost, and the metal elastic sheet can control the size of the incoming material, so that the qualification rate of motor products is improved, and the hardness of the metal elastic sheet is better than that of glue due to the stainless steel material of the metal elastic sheet.

Description

Bearing fixing structure of dry-wet motor

Technical Field

The utility model relates to the technical field of motor bearing fixing, in particular to a bearing fixing structure of a wet and dry motor.

Background

In the existing brushless direct current floor washing machine, the fixed outer ring of the bearing is mainly glued or interfered, the glue of the outer ring is glued, and the glue with excessive glue quantity is easy to be extruded, so that the risk of entering the bearing exists; if the glue amount is too small, the bonding strength is insufficient, so that the outer ring of the bearing rotates along with the motor, and the motor fails; if the outer ring of the bearing is in interference, the bearing chamber is required to have high precision, and the cost is too high.

Wherein, glue defect lies in: 1. the storage requirement is below 20 ℃, the materials are dried in shade and are required to be put into a refrigeration house for storage, and the cost is high; 2. the quality of the glue incoming material is not easy to control; 3. the primary curing time of glue adhesion fluctuates greatly, and the production control is not easy; 4. the bonding of the glue needs to take into consideration that the bonding force of the glue is influenced by temperature change, if the temperature of the surface of the bearing is higher, even the glue is melted; 5. besides the binding force of the glue can be influenced by the composition of the glue components, the more and less glue amount is an important factor influencing the binding force: excessive glue is easy to extrude, and risks of entering the bearing are caused; if the glue amount is too small, the bonding strength is insufficient, so that the outer ring of the bearing rotates along with the motor, and the motor fails; and the adoption of the metal elastic sheet fundamentally solves the risk.

Disclosure of Invention

The utility model aims to provide a bearing fixing structure of a dry-wet dual-purpose motor, which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dry and wet dual-purpose motor's bearing fixed knot constructs, includes the bearing room, be provided with the bearing in the bearing room, the bearing with be provided with the shell fragment between the bearing room, the shell fragment is elasticity stainless steel material.

Further preferably, the elastic sheet is wholly in an annular opening shape, so that the elastic sheet is convenient to install and clamp with the bearing.

Further preferably, the elastic sheet is close to the inner wall of the bearing and is provided with a plurality of salient point structures, the salient point structures are in interference fit with the outer wall of the bearing, and the elastic sheet is attached to the surface of the bearing through interference fit between the salient point mechanisms and the bearing, so that shaking does not easily occur.

Further preferably, a plurality of baffle plates which can be bent are uniformly distributed at the upper end of the elastic plate, and after the installation is completed, the baffle plates are bent and are attached to the upper end face of the bearing as much as possible, so that the bearing is prevented from axially moving when the motor runs.

Further preferably, the elastic sheet, the convex point structures and the bendable baffle plates are of an integrated structure, so that the strength of the elastic sheet is guaranteed, and in addition, the integrated structure is more complete and the service life of the elastic sheet is longer.

Advantageous effects

The bearing fixing structure of the dry-wet dual-purpose motor provided by the utility model has the advantages that the corrosion resistance of the stainless steel material is good, the storage is convenient, the cost is low, the metal elastic sheet can control the size of the incoming material, so that the qualification rate of motor products is improved, and the hardness of the metal elastic sheet is better than that of glue due to the stainless steel material of the metal elastic sheet.

Drawings

FIG. 1 is a schematic cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic front view of a spring structure according to the present utility model;

FIG. 3 is a schematic top view of the spring structure of the present utility model;

fig. 4 is a schematic cross-sectional view of the overall structure of the prior art.

Reference numerals

1-bearing chamber, 2-bearing, 3-shrapnel, 4-salient point structure and 5-baffle.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Examples

As shown in fig. 1-3, a bearing fixing structure of a wet and dry motor comprises a bearing chamber 1, wherein a bearing 2 is arranged in the bearing chamber 1, a spring sheet 3 is arranged between the bearing 2 and the bearing chamber 1, and the spring sheet 3 is made of elastic stainless steel.

In the embodiment, the elastic sheet 3 is in an annular opening shape as a whole, so that the elastic sheet is convenient to install and clamp with the bearing 2; the inner wall that shell fragment 3 is close to bearing 2 is equipped with a plurality of bump structures 4, and bump structure 4 and bearing 2 outer wall interference fit, through a plurality of bump structures 4 and bearing 2's interference fit, makes shell fragment 3 and bearing 2 surface laminating, is difficult for taking place to rock.

The upper end of the spring plate 3 is uniformly provided with a plurality of bendable baffle plates 5, and after the installation is completed, the baffle plates 5 are bent and attached to the upper end face of the bearing 2 as much as possible, so that the bearing is prevented from axial movement during motor operation.

The spring plate 3, the convex point structures 4 and the bendable baffle plates 5 are of an integrated structure, so that the strength of the integrated structure is guaranteed, and in addition, the integrated structure is more complete and the service life is longer.

During pre-installation, the metal spring plate is attached to the outer ring of the bearing due to the elasticity of the material, when the metal spring plate is pressed into the bearing, the outer ring of the bearing is guided by an oblique angle at the outer opening of the bearing chamber, the bearing outer ring and the spring plate are pressed into the bearing chamber, the bearing chamber is in interference fit with the spring plate, so that the protruding points on the inner side of the spring plate are elastically deformed, radial pretightening force is provided for the bearing, the bearing is fixed, and after the bearing is pressed in place, the baffle plate is bent to be attached to the upper surface of the bearing, so that the bearing is prevented from axially moving during motor operation.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the summary of the present utility model within the scope of the present utility model.

Claims (5)

1. A bearing fixing structure of a dry-wet dual-purpose motor is characterized in that: the bearing comprises a bearing chamber (1), a bearing (2) is arranged in the bearing chamber (1), an elastic sheet (3) is arranged between the bearing (2) and the bearing chamber (1), and the elastic sheet (3) is made of elastic stainless steel.

2. The bearing fixing structure of a wet and dry motor according to claim 1, wherein: the elastic sheet (3) is in an annular opening shape as a whole.

3. The bearing fixing structure of a wet and dry motor according to claim 1, wherein: the elastic sheet (3) is close to the inner wall of the bearing (2) and is provided with a plurality of salient point structures (4), and the salient point structures (4) are in interference fit with the outer wall of the bearing (2).

4. The bearing fixing structure of a wet and dry motor according to claim 1, wherein: a plurality of bendable baffle plates (5) are uniformly distributed at the upper end of the elastic sheet (3).

5. The bearing fixing structure of a wet and dry motor according to claim 1, wherein: the elastic sheet (3), the convex point structures (4) and the bendable baffle plates (5) are of an integrated structure.