CN208386306U

CN208386306U - Brushless motor for electric vehicle

Info

Publication number: CN208386306U
Application number: CN201820799975.9U
Authority: CN
Inventors: 蒋建伟
Original assignee: CHANGZHOU JIABO MACHINERY MANUFACTURING Co Ltd
Current assignee: CHANGZHOU JIABO MACHINERY MANUFACTURING Co Ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2019-01-15
Anticipated expiration: 2028-05-25

Abstract

The utility model relates to a kind of brushless motor for electric vehicle, including motor housing, rotor, stator and main shaft, and bearing is provided between the main shaft and shell, are externally provided with annular groove on the main shaft on corresponding shaft bearing internal diameter, are arranged with O-ring in the annular groove.The brushless motor for electric vehicle not only can play a buffer role in by increasing O-ring between main shaft and bearing inner wall, can also improve waterproof performance, extend the service life of bearing.

Description

Brushless motor for electric vehicle

Technical field:

The utility model relates to motor field more particularly to a kind of brushless motor for electric vehicle.

Background technique:

It is all using permanent magnetic brushless, including shell, rotor, stator and master that the motor of electric vehicle is most of all the time Axis.Although such motor generally can all be equipped with water-sealed bearing, interior of shell can still enter water or impurity, influence using the longevity Life.

Utility model content:

The purpose of this utility model is in view of the drawbacks of the prior art, it is same to provide a kind of simple structure, good water-proof effect, energy When play buffering bearing and extend the brushless motor for electric vehicle of bearing service life.

The utility model is achieved by the following technical solution: a kind of brushless motor for electric vehicle, including motor housing, turn Son, stator and main shaft, are provided with bearing, are externally provided with ring on corresponding shaft bearing internal diameter on the main shaft between the main shaft and shell Shape slot is arranged with O-ring in the annular groove.

In order to further increase waterproof performance, the O-ring and bearing inner wall are interference fitted, the O-ring and annular groove Outer wall clearance fit.

The beneficial effects of the utility model are: the brushless motor for electric vehicle between main shaft and bearing inner wall by increasing O Type circle, not only can play a buffer role in, and can also improve waterproof performance, extend the service life of bearing.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of the utility model brushless motor for electric vehicle；

In figure: 1. shells, 2. main shafts, 3. bearings, 4. annular grooves, 5.O type circle.

Specific embodiment:

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be understood by those skilled in the art with feature, to make apparent specific boundary to the protection scope of the utility model It is fixed.Direction term that the utility model is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom" etc., It is only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the utility model, rather than to Limit the utility model.

As shown in Figure 1, a kind of brushless motor for electric vehicle, including motor housing 1, rotor, stator and main shaft 2, the master Bearing 3 is respectively arranged between 2 both ends of axis and shell 1, the outer wall on the main shaft 2 at corresponding shaft bearing 3 offers annular groove 4, O-ring 5 is arranged in the annular groove 4, the O-ring 5 is interference fitted with 3 inner wall of bearing, between 4 outer wall of O-ring 5 and annular groove Gap cooperation.

Compared with prior art, the brushless motor for electric vehicle by between 3 inner wall of main shaft 2 and bearing increase O-ring 5, It not only can play a buffer role in, waterproof performance can also be improved, extend the service life of bearing 3.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.

Claims

1. a kind of brushless motor for electric vehicle, including motor housing, rotor, stator and main shaft, set between the main shaft and shell It is equipped with bearing, it is characterised in that: be externally provided with annular groove on the main shaft on corresponding shaft bearing internal diameter, be arranged with O in the annular groove Type circle.

2. brushless motor for electric vehicle according to claim 1, it is characterised in that: the O-ring is matched with bearing inner wall interference It closes.

3. brushless motor for electric vehicle according to claim 2, it is characterised in that: the O-ring and annular groove outer wall gap Cooperation.