CN217741456U

CN217741456U - Motor end cover bearing chamber insert for die casting

Info

Publication number: CN217741456U
Application number: CN202220109721.6U
Authority: CN
Inventors: 朱巍巍; 耿珊珊
Original assignee: Jiangsu Yunyi Drive System Co ltd
Current assignee: Jiangsu Yunyi Drive System Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-11-04
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a motor end cover bearing room inserts for die-casting, including the inserts body, the inserts body is the ring form, and the inserts body is equipped with an at least axial locking groove along the outside surface, and inserts body side is equipped with at least one circumference stop mechanism, through the setting of axial locking groove and circumference stop mechanism, when satisfying the antitorque performance requirement, simple structure, light in weight, the consumptive material is few, reaches the effect of axial and radial locking, can show the ability that improves the bearing room inserts and resist rotatory load.

Description

Motor end cover bearing chamber insert for die casting

Technical Field

The utility model belongs to the technical field of the motor end cover accessory, especially, relate to a motor end cover bearing room inserts for die-casting.

Background

With the rapid development of the new energy automobile industry in China, the core part driving motor is also rapidly iterated, and the end cover plays a very important role as a protection and support part of the driving motor. The end caps support the rotor shaft through the bearing chamber in cooperation with the bearings and ensure concentricity of the stator and the rotor while receiving impact, radial, rotational and axial loads from the rotor shaft. If the end cover bearing chamber is damaged, the service life of the bearing is shortened, the concentricity unbalance and the power problem of the stator and the rotor are caused, the service life of the motor is greatly reduced, and even the bearing and the motor are directly scrapped, so that the end cover bearing chamber has good comprehensive performance and is very important.

In the motor industry, cast iron or steel materials with higher hardness and wear resistance are used for manufacturing the end cover, but the weight is too heavy, so that the development trend of light weight is not met; with the vigorous development of the aluminum alloy die-casting industry, the end cover is generally made of aluminum alloy in the motor industry, the weight is light, the comprehensive performance is excellent, but on a high-power large-torque platform motor, the hardness, the shock resistance and the wear resistance of a bearing chamber made of the aluminum alloy material cannot meet the requirements; the motor industry uses the end cover to add the bearing chamber sleeve made of rubber, the purpose is to reduce the processing procedure, the assembly is simple, but the temperature of the bearing after the new energy automobile driving motor works is relatively high, the use environment is severe, and the bearing chamber sleeve made of rubber is easy to deform and age and lose efficacy. The bearing chamber insert structure made of the aluminum alloy die-casting end cover and made of the material with higher hardness and wear resistance is adopted in the motor industry, the insert structure is too complex, the machining cost of a face machine is too high, a structure with small effect is stored on the other hand, materials are wasted, and the insert can only bear small rotating load and cannot be used for a high-power large-torque platform motor. Therefore, the motor end cover bearing chamber insert for die casting needs to be designed.

Disclosure of Invention

An object of the utility model is to provide a motor end cover bearing room inserts for die-casting to solve the too complicated and antitorque performance poor technical problem of prior art's motor end cover bearing room inserts structure.

In order to achieve the above object, the utility model discloses a concrete technical scheme of motor end cover bearing room inserts for die-casting as follows:

the utility model provides a motor end cover bearing chamber inserts for die-casting, includes the inserts body, the inserts body is the ring form, and the inserts body is equipped with an at least axial detent groove along the outside surface, and inserts body side is equipped with at least one circumference detent mechanism, through the setting of axial detent groove and circumference detent mechanism, when satisfying the antitorque performance requirement, simple structure, light in weight, the consumptive material is few, reaches the effect of axial and radial locking, can show the ability that improves the bearing chamber inserts and resist rotatory load.

Furthermore, the outer diameter of the insert body is not larger than 140mm, the inner diameter of the insert body is not larger than 130mm, and the practicability is high.

Furthermore, the width of the insert body is 20-26mm, and the insert body effectively covers a bearing for a common large-scale motor.

Furthermore, the axial stop groove is a ring groove, is better combined with the bearing chamber, and is simple and convenient to process.

Furthermore, the width of the axial stopping groove is 4-10mm, the depth of the axial stopping groove is 2-4mm, peak load can be borne without arranging too many axial stopping grooves, and the axial and circumferential stopping effects are achieved.

Furthermore, the roughness of the surface of the inner ring of the insert body is not lower than 1.6, so that the insert body is convenient to match with a bearing.

Further, the circumferential stopping mechanism is a circumferential stopping plane or a circumferential stopping groove.

Furthermore, circumference locking plane is equipped with two, is located inserts body both sides symmetry and sets up, better prevention circumferential direction.

Furthermore, the insert body is made of bearing steel, and is hard in texture and wear-resistant.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a setting of axial locking groove and circumference locking mechanism when satisfying the antitorque performance requirement, simple structure, light in weight, the consumptive material is few, reaches the effect of axial and radial locking, can show the ability that improves the bearing room inserts and resist rotatory load.

2. The bearing for the common large-scale motor is effectively covered by setting the width of the insert body to be 20-26mm.

3. Adopt bearing steel through setting up inserts body material, the texture is hard stand wear and tear.

Drawings

Fig. 1 is a schematic perspective view of the structure of the present invention.

The reference numbers in the figures illustrate: 1. the insert comprises an insert body, 2, an axial stop groove and 3, a circumferential stop mechanism.

The specific implementation mode is as follows:

in order to better understand the purpose, structure and function of the present invention, the following description is made with reference to the accompanying drawings.

As shown in fig. 1, a motor end cover bearing chamber insert for die casting is designed, which comprises an insert body 1, wherein the insert body 1 is in a circular ring shape, the insert body 1 is provided with at least one axial locking groove 2 along the outer side surface, the side surface of the insert body 1 is provided with at least one circumferential locking mechanism 3, and through the arrangement of the axial locking groove 2 and the circumferential locking mechanism 3, the anti-torsion performance requirement is met, meanwhile, the structure is simple, the weight is light, the consumed materials are few, the axial and radial locking effects are achieved, and the capability of the bearing chamber insert for resisting the rotary load can be obviously improved.

The insert body 1 and the motor end cover body are formed by one-time die casting. In the die-casting process, the inner surface of the insert body 1 is matched and fixed with the outer surface of the insert supporting mold core on the motor end cover die-casting mold, so that the concentricity of the motor end cover body and the insert body 1 in the die-casting process can be ensured.

In the above embodiment, 2 examples are listed to realize the above technical solution:

example 1

The embodiment provides a motor end cover bearing chamber inserts for die-casting, including inserts body 1, inserts body 1 is the ring form, inserts body 1 is equipped with at least one axial detent groove 2 along the outside surface, 1 side of inserts body is equipped with at least one circumference detent mechanism 3, through the setting of axial detent groove 2 and circumference detent mechanism 3, when satisfying the antitorque performance requirement, moreover, the steam generator is simple in structure, light in weight, the consumptive material is few, reach the effect of axial and radial locking, can show the ability that improves the bearing chamber inserts and resist rotatory load.

The outer diameter of the insert body 1 is 140mm, the inner diameter of the insert body 1 is 130mm, the width of the insert body 1 is 26mm, and the insert body can be matched with a bearing for a large-scale motor; the axial stopping groove 2 is a spiral groove, the width of the axial stopping groove 2 is 10mm, the depth of the axial stopping groove 2 is 4mm, peak load can be borne without arranging too many axial stopping grooves 2, and the axial and circumferential stopping effect is achieved; the roughness of the surface of the inner ring of the insert body 1 is 1.6, and chamfers are arranged on the side edges of the insert body, so that the insert body is convenient to match with a bearing; the circumferential stopping mechanism 3 is a circumferential stopping groove; the insert body 1 is made of bearing steel and is made of the same material as the bearing. Compared with a bearing chamber made of an aluminum alloy material, the bearing chamber made of a bearing steel material has better comprehensive performance, and the insert body 1 is the same as the bearing material, so that the thermal expansion coefficient is the same, and the situation that the bearing and the bearing chamber are matched to cause tightness or looseness can be guaranteed in a heat alternating environment.

Example 2

The embodiment provides a motor end cover bearing chamber inserts for die-casting, including inserts body 1, inserts body 1 is the ring form, inserts body 1 is equipped with at least one axial detent 2 along the outside surface, 1 side of inserts body is equipped with at least one circumference detent 3, through the setting of axial detent 2 and circumference detent 3, when satisfying the antitorque performance requirement, moreover, the steam generator is simple in structure, light in weight, the consumptive material is few, reach the effect of axial and radial locking, can show the ability that improves bearing chamber inserts and resist rotatory load.

The outer diameter of the insert body is 56mm, the inner diameter of the insert body is 50mm, and the width of the insert body 1 is 20mm; the axial stopping groove 2 is a ring groove, the cross section of the axial stopping groove is rectangular, the width of the axial stopping groove 2 is 4mm, the depth of the axial stopping groove 2 is 2mm, peak load can be borne without arranging too many axial stopping grooves 2, and the axial and circumferential stopping effects are achieved; the roughness of the surface of the inner ring of the insert body 1 is 1.6, and chamfers are arranged on the side edges of the insert body, so that the insert body is convenient to match with a bearing; the circumferential stopping mechanisms 3 are circumferential stopping planes, the number of the circumferential stopping planes is two, the circumferential stopping planes are symmetrically arranged on two sides of the insert body 1, and circumferential rotation is prevented better.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a die-casting is with motor end cover bearing chamber inserts, includes inserts body (1), its characterized in that: the insert body (1) is annular, at least one axial stop groove (2) is formed in the outer side surface of the insert body (1), and at least one circumferential stop mechanism (3) is arranged on the side surface of the insert body (1).

2. The die-casting motor end cap bearing housing insert as claimed in claim 1, characterized in that the insert body (1) has an outer diameter of not more than 140mm and an inner diameter of not more than 130mm.

3. The die-cast motor end cap bearing housing insert as claimed in claim 2, characterized in that the width of the insert body (1) is 20-26mm.

4. The die-cast motor end cap bearing housing insert as claimed in claim 1, characterized in that the axial detent groove (2) is an annular groove.

5. The die-casting motor end cap bearing housing insert as set forth in claim 4, characterized in that the axial detent groove (2) has a width of 4-10mm and a depth of 2-4mm.

6. The die-casting motor end cap bearing housing insert as claimed in claim 1, characterized in that the roughness of the inner ring surface of the insert body (1) is not lower than 1.6.

7. The die-cast motor end cap bearing housing insert according to claim 1, characterized in that the circumferential stop means (3) is a circumferential stop plane or a circumferential stop groove.

8. The die-casting motor end cover bearing housing insert as set forth in claim 7, wherein the two circumferential stopping planes are symmetrically arranged on both sides of the insert body (1).

9. The die-casting motor end cover bearing housing insert as claimed in claim 1, characterized in that the insert body (1) material is bearing steel.