CN217282459U

CN217282459U - Brushless motor's waterproof construction

Info

Publication number: CN217282459U
Application number: CN202123420251.XU
Authority: CN
Inventors: 汪伟; 任可; 毕尚宾
Original assignee: Suzhou Pufa Electromechanical Co ltd
Current assignee: Suzhou Pufa Electromechanical Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-23
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a pair of brushless motor's waterproof construction, including the motor one side of motor housing be provided with and prevent the suck-back check valve, prevent that the suck-back check valve runs through motor housing, intercommunication the inside and outside of motor. The utility model provides a pair of brushless motor's waterproof construction, one-way through preventing suck-back check valve is opened and is closed, can be when the motor stop work completely cut off the motor inside and outside, communicate at the motor during operation again, do not hinder the heat dissipation of motor during operation, can not cause the backward flow when the motor shuts down yet.

Description

Brushless motor's waterproof construction

Technical Field

The utility model relates to a brushless motor's waterproof construction.

Background

At present, need dispel the heat at ordinary brushless DC motor in the use, traditional method adopts the labyrinth structure to dispel the heat, prevents simultaneously that steam from gushing into the stator and causing the damage, but when the motor stop work, steam can form and flow backward, can get into the stator equally and influence motor safety, because the motor no longer operates after shutting down, cooling steam does not have the outside output of inertia, will form and flow backward, so this type of motor all can have the potential safety hazard, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a brushless motor's waterproof construction, through increasing prevent that suck-back check valve ensures that the motor steam can not appear flowing backward when shutting down, sealed protection stator and circuit structure reduce the risk, improve the stability of motor.

In order to solve the above problem, the utility model provides a pair of brushless motor's waterproof construction has adopted following technical scheme:

a waterproof structure of a brushless motor comprises a motor, wherein a suck-back prevention one-way valve is arranged on one side of a motor shell, penetrates through the motor shell and is communicated with the inside and the outside of the motor;

the suck-back prevention one-way valve comprises a valve body and a valve core, wherein the valve body covers the shell of the motor and is fixedly connected with the motor; the valve core is positioned in the center of the valve body, one end of the valve core is fixedly connected with the valve body, and the other end of the valve core extends from the valve body to the center and is in a disconnected state.

Furthermore, the valve core comprises a plurality of core segments, each core segment extends towards the center from the inner wall of the valve body, the bottom of the core segment is fixedly connected with the valve body, and the top of the core segment is converged at the center of the valve body and is mutually butted against the center of the valve body.

Further, each core segment has elasticity and is opened outwards from the inside of the motor.

Furthermore, each core valve is consistent in size, and is uniformly and annularly distributed in the valve body to cover the center of the whole valve body.

Furthermore, the core segments mutually collide at the center of the valve body, and can only be opened from the inside of the valve body, namely the inside of the motor, and cannot be opened from the outside of the valve body, namely the outside of the motor, to the inside.

Further, when the motor works, the internal pressure of the motor is high due to internal heat dissipation, heat dissipation gas is output outwards through the anti-suck-back check valve, when the motor stops working, the air pressure inside and outside the motor is the same, the anti-suck-back check valve is closed, and external heat dissipation water vapor cannot flow backwards into the motor.

Furthermore, the suck-back prevention one-way valve is made of rubber materials.

The beneficial effects of the utility model reside in that: the utility model provides a pair of brushless motor's waterproof construction, one-way through preventing suck-back check valve is opened and is closed, can be when the motor stop work completely cut off the motor inside and outside, communicate at the motor during operation again, do not hinder the heat dissipation of motor during operation, can not cause the backward flow when the motor shuts down yet.

Drawings

Figure 1 is the structure schematic view that the suck-back prevention check valve of the utility model is opened.

FIG. 2 is a schematic structural view of the open suck-back prevention check valve

Figure 3 is a schematic view of the closed suck-back prevention check valve of the present invention.

Wherein: 1. the valve comprises a motor, 2, an anti-suck-back one-way valve, 3, a valve body, 4, a valve core and 5, a valve core flap.

Detailed Description

In order to clearly understand the technical solutions provided by the present invention, the present invention is further described below with reference to the accompanying drawings and specific embodiments.

As shown in the attached drawings, the waterproof structure of the brushless motor provided by the utility model comprises a motor 1, wherein a suck-back prevention one-way valve 2 is arranged on one side of the shell of the motor 1, and the suck-back prevention one-way valve 2 penetrates through the shell of the motor 1 and is communicated with the inside and the outside of the motor 1;

the suck-back prevention one-way valve 2 comprises a valve body 3 and a valve core 4, wherein the valve body 3 covers the shell of the motor 1 and is fixedly connected with the motor 1; the valve core 4 is positioned in the center of the valve body 3, one end of the valve core is fixedly connected with the valve body 3, and the other end of the valve core extends from the valve body 3 to the center and is in a disconnected state.

Furthermore, the valve core 4 comprises a plurality of core segments 5, each core segment 5 extends from the inner wall of the valve body 3 to the center, the bottom of the core segment is fixedly connected with the valve body 3, and the top of the core segment is converged at the center of the valve body 3 and is mutually butted against the center of the valve body 3.

Further, each of the core segments 5 has elasticity and is opened from the inside of the motor 1.

Further, each of the core segments 5 has a uniform size, and is uniformly and annularly distributed inside the valve body 3 to cover the center of the whole valve body 3.

Further, the core segments 5 collide with each other at the center of the valve body 3, and can be opened only from the inside of the valve body 3, i.e., the inside of the motor 1, and cannot be opened from the outside of the valve body 3, i.e., the outside of the motor 1.

Further, when the motor 1 works, the internal heat dissipation leads to that the internal pressure of the motor 1 is large, heat dissipation gas is output outwards through the anti-suck-back check valve 2, when the motor 1 stops working, the internal and external air pressures of the motor 1 are the same, the anti-suck-back check valve 2 is closed, and external heat dissipation water vapor cannot flow backwards into the motor 1.

Furthermore, the suck-back prevention one-way valve 2 is made of rubber materials.

Claims

1. A waterproof structure of a brushless motor is characterized by comprising a motor, wherein a suck-back prevention one-way valve is arranged on one side of a motor shell and penetrates through the motor shell to communicate the inside and the outside of the motor;

the anti-suck-back check valve comprises a valve body and a valve core, wherein the valve body covers the shell of the motor and is fixedly connected with the motor; the valve core is positioned in the center of the valve body, one end of the valve core is fixedly connected with the valve body, and the other end of the valve core extends from the valve body to the center and is in a disconnected state.

2. The waterproof structure of a brushless motor according to claim 1, wherein the valve core includes a plurality of core segments, each of the core segments extends from an inner wall of the valve body toward a center, a bottom portion is fixedly connected to the valve body, and a top portion converges at the center of the valve body to interfere with each other.

3. The waterproof structure of a brushless motor according to claim 2, wherein each of the core segments has elasticity to open from an inside of the motor to an outside.

4. The waterproof structure of a brushless motor according to claim 3, wherein each of the core pieces has a uniform size, and is uniformly and annularly distributed inside the valve body to cover the entire center of the valve body.

5. The waterproof structure of a brushless motor according to claim 2, wherein the core segments abut each other at a center of the valve body and are openable only from inside the valve body, i.e., inside the motor, and are not openable from outside the valve body, i.e., outside the motor.

6. The waterproof structure of a brushless motor according to claim 1, wherein when the motor is operated, internal heat dissipation causes a large internal pressure of the motor, heat dissipation gas is output outwards through the suck-back prevention check valve, when the motor stops operating, internal and external air pressures of the motor are the same, the suck-back prevention check valve is closed, and water vapor radiated from outside cannot flow backwards into the motor.

7. The waterproof structure of a brushless motor according to claim 1, wherein the suck-back prevention check valve is made of a rubber material.