CN223957396U

CN223957396U - DC motor with brake structure

Info

Publication number: CN223957396U
Application number: CN202520437110.8U
Authority: CN
Inventors: 孙旭华; 金晶; 武鹏飞
Original assignee: Hangzhou Renxiang Technology Co ltd
Current assignee: Hangzhou Renxiang Technology Co ltd
Priority date: 2025-03-13
Filing date: 2025-03-13
Publication date: 2026-02-27
Anticipated expiration: 2035-03-13

Abstract

The utility model discloses a direct current motor with a brake structure, which comprises a motor component and a brake component, wherein the motor component comprises a front end cover, a front machine shell, a rotor, a motor shaft, a brush holder plate and a Hall plate, the brake component comprises a rear machine shell, a coil, a brake piece, a rear end cover, a spring and a brake pad, the front machine shell is connected with the rear machine shell, the rotor and the motor shaft are arranged in the front machine shell, the motor shaft penetrates through the middle of the rotor, the brake piece is arranged on the motor shaft, a rubber disc is arranged on the brake piece, a through hole is arranged in the middle of the rear end cover, the spring is arranged in the through hole, one end of the spring is connected with the brake pad, and the brake pad is connected with the rubber disc during braking.

Description

DC motor with brake structure

Technical Field

The utility model relates to a direct current motor with a brake structure.

Background

The miniature direct current motor is widely used in various scenes, such as an electric lifting clothes hanger, an electric curtain and the like, has the advantages of small size, convenience in installation, low required voltage and current and the like, can solve the problems generated when the high-power motor is used, and mainly solves the problems when the conventional direct current motor is used, wherein the braking modes of the conventional direct current motor are generally three in braking control, and the braking ‌ is reversely connected with 1 and ‌. The method is suitable for short-time or frequent braking, and 2, ‌ energy consumption braking ‌ is realized by connecting a working terminal of a motor to a negative electrode of a power supply, connecting a starting terminal to a positive electrode of the power supply and consuming energy through a resistor or energy storage device. This method is suitable for long-term braking or situations where energy recovery is required, 3, ‌ mechanical braking ‌ braking is achieved by a clutch or by disengaging the motor from the drive system, and is suitable for situations where accurate stopping or reversible driving is required. The braking modes are only suitable for the use of medium-sized and large-sized motors, or the accurate control of braking is difficult to realize, the requirements on the miniature direct current motor cannot be met, the use of the miniature direct current motor is affected, and therefore the direct current motor with a braking structure needs to be developed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the direct current motor with the brake structure, which is convenient to use, simple to operate, compact in structure, good in brake performance, capable of realizing the rapid stopping operation of the motor, and practical and wide in use.

In order to solve the problems, the utility model adopts the following technical scheme:

The direct current motor with the brake structure comprises a motor assembly and a brake assembly, wherein the motor assembly comprises a front end cover, a front machine shell, a rotor, a motor shaft, a brush carrier plate and a Hall plate, the brake assembly comprises a rear machine shell, a coil, a brake piece, a rear end cover, a spring and a brake block, the coil is arranged in the rear end cover, the front machine shell is connected with the rear machine shell, the rotor and the motor shaft are arranged in the front machine shell, the motor shaft penetrates through the middle of the rotor, a first bearing and a second bearing are respectively arranged at two ends of the motor shaft, the first bearing is arranged in the front end cover, the second bearing is arranged in the rear machine shell, the brake piece is arranged on the motor shaft, a rubber disc is arranged on the brake piece, a through hole is formed in the middle of the rear end cover, one end of the spring is connected with the brake block, and the brake block is connected with the rubber disc during braking.

Preferably, the rear shell is provided with a limit groove, the brake pad is provided with a boss, the boss is arranged in the limit groove, and the limit of the movement direction of the brake pad is realized through the effect of the boss and the limit groove, so that the stability of the brake pad during braking is improved.

Preferably, the rear end cover is provided with a groove at the outer side, the rear shell is provided with a limiting block matched with the groove, and the rear end cover is installed in the rear shell through the matching of the groove and the limiting block, and meanwhile limiting after installation is realized.

The motor has the advantages that the brake pad is separated from the rubber disc through the tensile force action of the spring on the brake pad, so that the brake assembly cannot influence the normal use of the motor assembly, when braking is needed, the coil is electrified, the coil generates repulsive force on the brake pad, the car-related sheet is contacted with the rubber disc under the action of magnetic force, the rubber disc, the brake piece and the motor shaft stop rotating through the action of the extrusion force and the friction force, the braking effect is realized, the motor is convenient to use, simple in operation, compact in structure, good in braking performance and capable of realizing the rapid stopping operation of the motor, and the motor has practicability and use universality.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, but are not intended to limit the scope of the present utility model.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

fig. 3 is a schematic view of the internal structure of the present utility model.

The novel brake comprises a front end cover 1, a front shell 2, a rear shell 3, a wiring terminal 4, a rotor 5, a motor shaft 6, a first bearing 7, a second bearing 8, a coil 9, a brake element 10, a rubber disc 11, a rear end cover 12, a spring 13, a brake block 14, a brush frame plate 15, a Hall plate 16, a limiting groove 17, a boss 18, a limiting block 19 and a groove 20.

Detailed Description

Referring to fig. 1 to 3, a dc motor with a braking structure includes a motor assembly including a front cover 1, a front housing 2, a rotor 5, a motor shaft 6, a brush holder plate 15 and a hall plate 16, and a braking assembly including a rear housing 3, a coil 9, a braking member 10, a rear cover 12, a spring 13 and a braking pad 14, the coil 9 being disposed in the rear cover 12.

Further, the front casing 2 is connected with the rear casing 3, the rotor 5 and the motor shaft 6 are arranged in the front casing 2, the motor shaft 6 passes through the middle of the rotor 5, the first bearing 7 and the second bearing 8 are respectively arranged at two ends of the motor shaft 6, the first bearing 7 is arranged in the front end cover 1, and the second bearing 8 is arranged in the rear casing 3.

Further, the brake piece 10 is installed on the motor shaft 6, a rubber disc 11 is arranged on the brake piece 10, a through hole is formed in the middle of the rear end cover 12, a spring 13 is installed in the through hole, one end of the spring 13 is connected with a brake pad 14, and the brake pad 14 is connected with the rubber disc 11 during braking.

Further, a limit groove 17 is formed in the rear casing 3, a boss 18 is formed in the brake pad 14, and the boss 18 is arranged in the limit groove 17.

Further, a groove 20 is provided on the outer side of the rear end cover 12, and a stopper 19 matched with the groove is provided on the rear housing 3.

Further, the brush holder plate and the Hall plate are arranged in the rear shell, and the brush holder plate is provided with a wiring terminal 4 and a brush.

Further, a hall sensor (not shown) is provided on the hall plate.

Further, the coil and the brake pad work cooperatively.

Further, the front casing and the rear casing are connected through screws, and a part of the rear casing is embedded into the front casing.

Further, the limiting groove 17 and the boss 18 are multiple.

When the motor stops working in time, the motor shaft firstly loses power, then the coil is electrified, the coil generates magnetic force, the coil separates the brake pad from the rear end cover through the magnetic force, meanwhile, the brake pad is contacted with the rubber disc, the brake piece and the like stop rotating through the action of friction force and extrusion force, the braking effect is achieved, then the coil is powered off, and the brake pad is reset under the action of the tension of the spring. The automatic braking device is convenient to use, simple to operate, compact in structure, good in braking performance, capable of achieving rapid stopping operation of the motor, and practical and wide in use.

The above is merely a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions that do not undergo the inventive work should be covered in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. The direct current motor with the brake structure is characterized by comprising a motor assembly and a brake assembly, wherein the motor assembly comprises a front end cover, a front machine shell, a rotor, a motor shaft, a brush holder plate and a Hall plate, and the brake assembly comprises a rear machine shell, a coil, a brake piece, a rear end cover, a spring and a brake piece, wherein the coil is arranged in the rear end cover;

the front shell is connected with the rear shell, the rotor and the motor shaft are arranged in the front shell, the motor shaft penetrates through the middle of the rotor, a first bearing and a second bearing are respectively arranged at two ends of the motor shaft, the first bearing is arranged in the front end cover, and the second bearing is arranged in the rear shell;

The brake piece is arranged on a motor shaft, a rubber disc is arranged on the brake piece, a through hole is formed in the middle of the rear end cover, a spring is arranged in the through hole, one end of the spring is connected with a brake pad, and the brake pad is connected with the rubber disc during braking.

2. The DC motor with the brake structure of claim 1, wherein the rear housing is provided with a limit groove, the brake pad is provided with a boss, and the boss is arranged in the limit groove.

3. The DC motor with the brake structure of claim 1, wherein the outer side of the rear end cover is provided with a groove, and the rear shell is provided with a limiting block matched with the groove.