CN216232797U

CN216232797U - Magnetic induction brake power-off switch for electric vehicle

Info

Publication number: CN216232797U
Application number: CN202122972310.8U
Authority: CN
Inventors: 王雨珊
Original assignee: Xianghe Qiangsheng Electric Vehicle Manufacturing Co ltd
Current assignee: Xianghe Qiangsheng Electric Vehicle Manufacturing Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-08
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a magnetic induction brake power-off switch of an electric vehicle, which comprises an upper cover, a turntable, a chassis, a magnet and a Hall sensor, wherein the turntable is arranged on the upper cover; the turntable is positioned between the upper cover and the chassis, and a magnet is fixed at the edge of the turntable; a pull wire linked with a brake wire or a brake pedal is fixed at the top edge of the turntable; and a Hall sensor is fixed on the chassis. When a driver pulls a hand brake or treads a brake pedal, a pull wire is linked with the brake pedal, the rotating disc is pulled to rotate, a magnet fixed on the rotating disc rotates along with the rotating disc, the magnet is close to the Hall sensor, the Hall sensor outputs a high-level voltage signal to the electric vehicle control unit under the action of a magnetic field, and after the electric vehicle control unit receives the high-level voltage signal, a control signal is immediately output to cut off a power supply of a driving motor of the electric vehicle, the motor stops rotating, and the electric vehicle stops. The utility model has high sensitivity, can greatly improve the safety of a mechanical brake system and provides reliable guarantee for safe driving.

Description

Magnetic induction brake power-off switch for electric vehicle

Technical Field

The utility model relates to a magnetic induction brake power-off switch installed on an electric vehicle.

Background

Because the electric two-wheeled vehicle and the electric tricycle are labor-saving and fast to ride and are cheaper than automobiles, the electric two-wheeled vehicle and the electric tricycle are popularized in China at present, and the number of the electric two-wheeled vehicle and the electric tricycle is more and more, so that the electric two-wheeled vehicle and the electric tricycle become main transportation tools for people. Because the electric bicycle and the electric tricycle ride fast, the braking system is particularly important, but the traffic accidents caused by the brake failure or poor brake effect of the electric bicycle are more and more.

The traditional electric vehicle brake system is mainly a mechanical brake and mainly comprises a brake wire or a brake pedal, a brake rod, a drum brake and a return spring. When braking, a driver pulls a brake wire or treads a brake pedal by feet, and the drum brake locks a transmission shaft of a rear axle of the electric vehicle through the brake rod, so that the driving wheel is locked and braked.

The mechanical brake has the disadvantages that: 1. the hand brake or the foot brake can deform after being used for a period of time, and particularly the plastic deformation of a brake cable of the hand brake can not be recovered, so that the mechanical brake system can reduce the braking efficiency, increase the braking stroke, lengthen the braking distance and brake untimely after being used for a long time. 2. Traditional mechanical brake system, though, the driver has started brake system, and drum among the brake system is stopped and is locked the electric motor car transmission shaft, but, the electric motor car motor does not cut off the power supply this moment, and because the electric motor car speed is very fast, the automobile body has power to continue to move forward sometimes, and this kind of condition is also very dangerous.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide a magnetic induction brake de-energizing switch for mounting on an electric vehicle. When a driver pulls a hand brake or treads a brake pedal, the electric vehicle brake system immediately outputs a signal to the electric vehicle control unit, and the control unit outputs a signal to cut off the power supply of the electric vehicle motor.

In order to achieve the purpose, the utility model adopts the following technical scheme: a magnetic induction brake power-off switch of an electric vehicle comprises an upper cover, a turntable, a chassis, a magnet and a Hall sensor;

the turntable is positioned between the upper cover and the chassis, and the upper cover, the turntable and the chassis are coaxially connected;

at least one magnet is fixed at the edge of the turntable; a pull wire which is linked with a brake wire or a brake pedal and can pull the turntable to rotate is fixed at the top edge of the turntable;

the chassis is fixedly provided with the Hall sensor, and a signal output line of the Hall sensor is connected with an electric vehicle control unit.

Preferably, a hollow circular tube is fixed at the upper part of the chassis and close to the top edge of the turntable, and the hall sensor is arranged at the front end of the hollow circular tube; and a signal output line of the Hall sensor penetrates out of the hollow round pipe.

Preferably, the upper cover and the chassis are combined into a shell, and a sealing ring is arranged between the upper cover and the chassis.

Preferably, a first limit block is arranged on the inner edge of the chassis; a second limiting block is arranged on the outer edge of the turntable; the first limiting block and the second limiting block are distributed in a staggered mode.

Preferably, a circlip is clamped and fixed at the axis of the turntable.

When a driver pulls a hand brake or treads a brake pedal, a stay wire is linked with the brake pedal, the turntable is pulled to rotate, a magnet fixed on the turntable rotates along with the stay wire, the magnetic field around the Hall sensor is enhanced along with the fact that the magnet is close to the Hall sensor, the Hall sensor outputs a high-level voltage signal under the action of the magnetic field, the high-level voltage signal is transmitted to an electric vehicle control unit through a signal output line, after the electric vehicle control unit receives the high-level voltage signal, a control signal is immediately output to cut off a power supply of a driving motor of the electric vehicle, the motor stops rotating, and the electric vehicle stops. When a driver loosens the hand brake or releases the foot brake, the pull wire returns, the turntable rotates in the opposite direction, the distance between the magnet and the Hall sensor is increased, the magnetic field around the Hall sensor is weakened, the output level of the Hall sensor is changed from high level to low level, the electric vehicle control unit is connected with a power supply loop of an electric vehicle motor, and the motor can work normally.

The utility model has the advantages that:

1. the sensitivity is high. When the Hall sensor and the magnet are superposed, the Hall sensor immediately outputs a high-level voltage signal to the electric vehicle control unit, and the control unit outputs a control signal to cut off the power supply of the electric vehicle driving motor, so that the vehicle body is prevented from continuously moving forwards under the action of power.

2. The utility model is combined with the traditional mechanical brake, can greatly improve the safety of the mechanical brake system, and provides more reliable guarantee for safe driving.

3. The whole device has simple structure and high reliability.

4. The whole device belongs to a closed system, so that water and dust are prevented from entering the device better, and the working reliability of the whole device is ensured.

Drawings

FIG. 1 is a schematic view of a front perspective view of the present invention with the upper cover removed;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic view of a rear perspective structure of the present invention with the upper cover removed.

Detailed Description

The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and therefore, the embodiments disclosed in the specification should not be construed as limiting the present invention, but merely as exemplifications of embodiments thereof, which are intended to make the features of the present invention obvious.

As shown in fig. 1-3, the magnetic induction brake power-off switch of the electric vehicle disclosed by the utility model comprises an upper cover 1, a turntable 2, a chassis 3, a magnet 4 and a hall sensor 5.

The upper cover 1 and the chassis 3 are combined into a shell, the turntable 2 is positioned between the upper cover 1 and the chassis 3, and the upper cover 1, the turntable 2 and the chassis 3 are coaxially connected. A plurality of magnets 4 are fixed at the edge of the turntable 2. A pull wire 21 linked with a brake wire or a brake pedal is fixed at the top edge of the turntable 2, and when a driver pulls a hand brake or steps on the brake pedal, the pull wire 21 is linked with the brake wire to pull the turntable 2 to rotate.

A hollow circular tube 31 is fixed on the upper part of the chassis 3 near the top edge of the turntable, and a Hall sensor 5 is arranged in the front end of the hollow circular tube 31. The signal output line of the hall sensor 5 passes out of the circular tube 31.

When a driver pulls a hand brake or treads a brake pedal, the pull wire 21 is linked with the brake pedal, the rotary disc 2 is pulled to rotate, the magnet 4 fixed on the rotary disc 2 rotates along with the rotation, the magnetic field around the hall sensor 5 is enhanced along with the fact that the magnet 4 is close to the hall sensor 5, the hall sensor 5 outputs a high-level voltage signal under the action of the magnetic field, the high-level voltage signal is transmitted to the electric vehicle control unit through a signal output line, after the electric vehicle control unit receives the high-level voltage signal, the control signal is immediately output to cut off the power supply of a driving motor of the electric vehicle, the motor stops rotating, and the electric vehicle stops. When a driver loosens the hand brake or releases the foot brake, the stay wire 21 returns, the turntable 2 rotates in the opposite direction, the distance between the magnet 4 and the Hall sensor 5 is increased, the magnetic field around the Hall sensor 5 is weakened, the output level of the Hall sensor is changed from high level to low level, the electric vehicle control unit is connected with a power supply loop of a motor of the electric vehicle, and the motor can work normally.

As shown in the figure, the inner edge of the chassis 3 is provided with a limit block 32, the outer edge of the turntable 2 is also provided with a limit block 22, and the limit block 32 and the limit block 22 are distributed in a staggered manner, so that the rotating range of the turntable 2 is limited.

A clamp spring 6 is clamped and fixed at the axis of the turntable 2, when the electric vehicle brakes, namely a driver pulls a hand brake or treads a brake pedal, the clamp spring 6 is compressed when the pull wire 21 pulls the turntable 2 to rotate, when the driver releases the hand brake or leaves the brake pedal, the pull wire 21 is not stressed, and the turntable 2 rotates in the opposite direction under the action of the clamp spring 6.

In order to improve the tightness of the utility model and prevent water and dust from entering the interior of the utility model, a sealing ring is additionally arranged between the upper cover 1 and the chassis 3.

The utility model is combined with the traditional mechanical brake, can greatly improve the safety of the mechanical brake system and provides more reliable guarantee for safe driving.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an electric motor car magnetic induction brake power off switch which characterized in that: the device consists of an upper cover, a turntable, a chassis, a magnet and a Hall sensor;

2. The magnetic induction brake power-off switch for the electric vehicle as claimed in claim 1, wherein: a hollow circular tube is fixed at the upper part of the chassis and close to the top edge of the turntable, and the Hall sensor is arranged at the front end of the hollow circular tube; and a signal output line of the Hall sensor penetrates out of the hollow round pipe.

3. The magnetic induction brake power-off switch for the electric vehicle as claimed in claim 2, wherein: the upper cover and the chassis are combined into a shell, and a sealing ring is arranged between the upper cover and the chassis.

4. The magnetic induction brake power-off switch for the electric vehicle as claimed in one of claims 1 to 3, wherein: a first limiting block is arranged on the inner edge of the chassis;

a second limiting block is arranged on the outer edge of the turntable;

the first limiting block and the second limiting block are distributed in a staggered mode.

5. The magnetic induction brake power-off switch for the electric vehicle as claimed in claim 4, wherein: a clamp spring is clamped and fixed at the axis of the turntable.