Direct current motor with brake function

Abstract

The utility model discloses a direct current motor with a brake function, which comprises a front end cover, a shell, a rear end cover, a motor shaft, a rotor, a stator, a steering gear, a brake piece, a brake pad, a coil and a spring, one end of a locking bolt sequentially penetrates through the front end cover and the shell to be connected with the rear end cover, the rotor and the stator are arranged in the shell, and the motor shaft penetrates through the middle of the rotor; the steering gear and the brake piece are installed on a motor shaft, a rubber sleeve is installed on the brake piece, a brake seat is arranged in the rear end cover, a coil and a spring are arranged in the brake seat, one end of the spring is connected with a brake pad, and the coil, the spring and the brake pad are matched. The auxiliary braking device is simple in operation and exquisite in structure, can assist the motor to complete braking operation, realizes accurate parking of the motor, improves the performance of the motor, and improves the use stability and safety of the motor.

Description

Technical Field

[0001] This utility model relates to a DC motor with built-in braking function. Background Technology

[0002] Electric motors are widely used, mainly for driving purposes. In order to meet the needs of certain scenarios and facilitate motor installation, some motors have been developed to be smaller and more miniature, while also enabling the connection and use of smaller current and voltage.

[0003] In existing motors, stopping the motor is usually achieved by switching the load and direction. However, it is difficult to achieve precise stopping of the motor in actual use. During the stopping process, the motor and related structures will continue to perform some operations, which affects the use of the motor and some related structures in some scenarios. Therefore, it is necessary to improve the existing motor and design a motor with a built-in braking function. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a DC motor with built-in braking function that is easy to use, simple to operate, has an exquisite structure, can assist the motor in completing the braking operation, and can achieve precise stopping of the motor. It is practical and widely used.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A DC motor with built-in braking function includes a front cover, a housing, a rear cover, a motor shaft, a rotor, a stator, a steering gear, a brake component, a brake pad, a coil, and a spring. One end of a locking bolt passes through the front cover and the housing in sequence and connects to the rear cover. The rotor and stator are disposed in the housing, with the stator disposed on the outside of the rotor. The motor shaft passes through the middle of the rotor.

[0007] Preferably, the steering gear and brake are mounted on the motor shaft. A brush holder plate is provided on one side of the steering gear. A rubber sleeve is installed on the brake. A brake seat is provided in the rear cover. A coil and a spring are provided in the brake seat. One end of the spring is connected to the brake pad. The coil, spring, and brake pad cooperate with each other.

[0008] Preferably, the brake component has a protrusion structure and a flange, and the rubber sleeve has a groove structure and a slot. After assembly, the protrusion structure is embedded in the groove structure, and the flange is embedded in the slot.

[0009] This design increases the tightness of the connection between the brake components and the rubber sleeve, preventing slippage.

[0010] Preferably, the front end cover is provided with a bearing mounting seat 1, in which a bearing 1 is installed, and the rear end cover is provided with a bearing mounting seat 2, in which a bearing 2 is installed, and the motor shaft passes through the bearing 1 and the bearing 2; the bearing mounting seat 1 and the bearing mounting seat 2 realize the installation and fixation of the bearing 1 and the bearing 2, and at the same time increase the convenience of the motor shaft rotation.

[0011] Preferably, the rear end cover is provided with a Hall plate, and the brake component is equipped with a magnetic ring that cooperates with the Hall plate.

[0012] Preferably, the front cover and the rear cover are partially embedded in the housing. This arrangement increases the tightness and integrity of the connection between the front cover, the rear cover and the housing.

[0013] Preferably, the Hall plate and brush holder plate are installed inside the rear cover, thereby fixing the Hall plate and brush holder plate.

[0014] The beneficial effects of this utility model are as follows: This utility model generates a magnetic field by energizing a coil, and the repulsive force of the magnetic field pushes the brake pad to move. Through the contact and connection between the brake pad and the rubber sleeve, the rubber sleeve and brake components stop rotating due to the action of thrust and friction, thereby achieving the purpose of controlling the rotation of the motor shaft and realizing the braking operation. At the same time, after braking is completed, the coil is de-energized, the magnetic field disappears, and under the tension of the spring, the brake pad separates from the rubber sleeve, and the brake pad resets, thus achieving the effect of automatic braking. This solves the problem of difficult braking of existing motors and realizes precise control of motor braking. It has practicality and wide applicability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the brake component structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the rubber sleeve structure of this utility model.

[0021] Among them, 1. front cover, 2. housing, 3. rear cover, 4. motor shaft, 5. rotor, 6. stator, 7. bearing one, 8. steering gear, 9. brush holder plate, 10. copper brush, 11. Hall plate, 12. brake component, 13. rubber sleeve, 14. brake pad, 15. coil, 16. brake seat, 17. spring, 18. bearing mounting seat one, 19. bearing mounting seat two, 20. protrusion structure, 21. groove structure, 22. flange, 23. slot, 24. locking bolt, 25. magnetic ring, 26. bearing two. Detailed Implementation

[0022] See Figures 1 to 5 The DC motor shown includes a front cover 1, a housing 2, a rear cover 3, a motor shaft 4, a rotor 5, a stator 6, a steering gear 8, a brake component 12, a brake pad 14, a coil 15, and a spring 17. One end of a locking bolt 24 passes through the front cover 1 and the housing 2 in sequence and connects to the rear cover 3. The rotor 5 and the stator 6 are disposed in the housing 2, with the stator 6 disposed on the outside of the rotor 5. The motor shaft 4 passes through the middle of the rotor 5.

[0023] Furthermore, the steering gear 8 and the brake component 12 are mounted on the motor shaft 4. A brush holder plate 9 is provided on one side of the steering gear 8. A rubber sleeve 13 is installed on the brake component 12. A brake seat 16 is provided in the rear cover 3. A coil 15 and a spring 17 are provided in the brake seat 16. One end of the spring 17 is connected to the brake pad 12. The coil, spring, and brake pad cooperate with each other.

[0024] Furthermore, the brake component 12 is provided with a protrusion structure 20 and a flange 22, and the rubber sleeve 13 is provided with a groove structure 21 and a slot 23. After assembly, the protrusion structure 20 is embedded in the groove structure 21, and the flange 22 is embedded in the slot 23.

[0025] Furthermore, the front cover 1 is provided with a bearing mounting seat 18, and a bearing 7 is installed in the bearing mounting seat 18. The rear cover 3 is provided with a bearing mounting seat 29, and a bearing 27 is installed in the bearing mounting seat 29. The motor shaft 4 passes through the bearing 7 and the bearing 27.

[0026] Furthermore, a Hall plate 11 is provided in the rear cover 3, and a magnetic ring 25 that cooperates with the Hall plate is installed on the brake component 12.

[0027] Furthermore, the front cover 1 and the rear cover 3 are partially embedded in the housing 2.

[0028] Furthermore, the Hall plate 11 and the brush holder plate 9 are installed inside the rear cover 3.

[0029] Furthermore, the brush holder plate 9 is provided with copper brushes 10.

[0030] Furthermore, the rotor and the motor shaft are an integral structure.

[0031] Furthermore, during braking, the coil generates a magnetic field that repels the brake pads.

[0032] Furthermore, the spring constantly applies tension to the brake pads, assisting in their reset.

[0033] In use, this invention involves installing the motor according to the application scenario. During operation, the motor is powered on and starts, causing the motor shaft to rotate and transmitting torque. When the motor needs to be stopped quickly, the coil is energized, generating a magnetic field that repels the brake pads, pushing them into contact with the rubber sleeve. Through the action of thrust and friction, the rubber sleeve and brake components stop rotating, thus stopping the motor shaft and achieving braking and stopping. After the motor stops, the coil is de-energized, the magnetic field disappears, and the brake pads return to their original position under the spring force, ensuring that the next rotation of the motor shaft is not affected. It is convenient to use, simple to operate, and has a refined structure. It assists the motor in braking operations, achieving precise motor stopping, and is practical and widely applicable.

[0034] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A DC motor with built-in braking function, characterized in that: It includes a front cover, a housing, a rear cover, a motor shaft, a rotor, a stator, a steering gear, a brake component, brake pads, a coil, and a spring. One end of a locking bolt passes through the front cover and the housing in sequence and connects to the rear cover. The rotor and stator are disposed in the housing, with the stator disposed on the outside of the rotor. The motor shaft passes through the middle of the rotor. The steering gear and brake are mounted on the motor shaft. A brush holder plate is provided on one side of the steering gear. A rubber sleeve is installed on the brake. A brake seat is provided in the rear cover. A coil and a spring are provided in the brake seat. One end of the spring is connected to the brake pad. The coil, spring, and brake pad cooperate with each other. The brake component has a protrusion structure and a flange, and the rubber sleeve has a groove structure and a slot. After assembly, the protrusion structure is embedded in the groove structure, and the flange is embedded in the slot.

2. A DC motor with built-in braking function according to claim 1, characterized in that: The front end cover is provided with a bearing mounting seat 1, and a bearing 1 is installed in the bearing mounting seat 1. The rear end cover is provided with a bearing mounting seat 2, and a bearing 2 is installed in the bearing mounting seat 2. The motor shaft passes through the bearing 1 and the bearing 2.

3. A DC motor with built-in braking function according to claim 1, characterized in that: The rear end cover is provided with a Hall plate, and the brake component is equipped with a magnetic ring that cooperates with the Hall plate.

4. A DC motor with built-in braking function according to claim 1, characterized in that: The front and rear covers are partially embedded in the housing.

5. A DC motor with built-in braking function according to claim 3, characterized in that: The Hall plate and brush holder plate are installed inside the rear cover.

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