Direct current motor brush
By designing a DC motor brush that can be installed embeddedly, the problem of brush wear in the commutator is solved, and the brushes can be easily replaced and maintained.
Patent Information
- Application Number
- CN202420160775.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-01-22
AI Technical Summary
The commutator of the DC motor wears the brush due to the friction between the commutator plate and the brush, which affects the operation of the motor.
A DC motor brush is designed, which includes a brush body and a fixed mounting base. The brush body can be embedded in the arc-shaped slot of the fixed mounting base. The conductive terminal is located in the slot, making it easy to replace the brush body.
Through this design, the brush body can be easily removed from one side and replaced after wear, avoiding direct connection with external power wiring, simplifying the replacement process, and improving maintenance convenience.
Smart Images
Figure CN222365885U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of direct current motors, and in particular relates to a brush for a direct current motor. Background Art
[0002] The commutator of a DC motor is a key component in a DC motor that controls the direction of the DC motor. The DC motor commutator is usually composed of a group of segmented conductive materials that are mounted on the shaft of the motor rotor. Each conductive material is called a commutator segment. The main function of the DC motor commutator is to provide DC power to the rotating part of the motor so that the appropriate direction and magnitude of current can be generated to achieve the direction of the motor. As the motor rotor rotates, the commutator contacts the brushes, which are connected to the power supply current of the motor. Through the contact between the commutator and the brushes, the current can change its direction periodically, allowing the motor to rotate continuously. During the operation of the motor, the commutator segments of the commutator contact the brushes. As the motor rotor rotates, the contact point between the brushes and the commutator segments constantly changes. In this way, the current can flow in the commutator according to the position and direction of the motor rotor, thereby generating the required torque and direction of rotation.
[0003] However, as the armature rotates, the commutator segments produce continuous friction with the brushes, so the brushes will inevitably wear out. When the wear reaches a certain level, the contact between the brushes and the commutator segments is poor, thus affecting the operation of the DC motor. Utility Model Content
[0004] The main purpose of the utility model is to provide a DC motor brush, which is used to facilitate the replacement of the DC motor brush, thereby facilitating the maintenance of the DC motor.
[0005] To achieve the above purpose, the utility model provides a DC motor brush, which includes a brush body and a fixed mounting seat, the back of the brush body is provided with a conductive terminal, the front side of the fixed mounting seat is provided with an arc groove, the brush body is arranged in the arc groove, the arc groove is provided with a slot, and the conductive terminal is arranged in the slot.
[0006] The utility model provides a DC motor brush, in which an external power line is connected to a fixed mounting seat. After the brush body is installed in the fixed mounting seat, the conductive terminal contacts the external power wiring and is energized. Since the brush body can be installed in the arc groove of the fixed mounting seat by embedded installation, and the conductive terminal is located in the slot at this time, when the brush body is worn out after long-term use, the brush body can be taken out from one side and replaced. Since the brush body itself is not directly connected to the external power wiring, it is relatively easy to replace, thereby making later maintenance more convenient.
[0007] In a possible implementation, sliding lock buckles are symmetrically arranged on the side walls of the fixed mounting seat, and the sliding lock buckles include a bottom slide plate and a sliding locking member. The sliding locking member can fix the brush body from both sides after the brush body is installed, thereby improving the structural stability.
[0008] In a possible implementation, fixing plates are provided at the upper and lower ends of the back side of the fixing mounting seat, and the fixing plates are provided to set the fixing mounting seat in the motor.
[0009] In a possible implementation, two threaded mounting holes are provided on the fixing plate. The fixing plate is fixed by bolts, and the structure is relatively stable.
[0010] In a possible implementation, a toggle plate is provided on the sliding locking member, so that the sliding locking member can be easily toggled after the toggle plate is provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the DC motor brush structure provided by the utility model;
[0012] Figure 2 The utility model is a schematic diagram of the structure of a DC brush body. DETAILED DESCRIPTION
[0013] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0014] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0015] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
[0016] See attached figure Figure 1The utility model provides a DC motor brush, which includes a brush body 1 and a fixed mounting seat 2, a conductive terminal 3 is arranged on the back of the brush body 1, an arc groove is arranged on the front side of the fixed mounting seat 2, the brush body 1 is arranged in the arc groove, a slot 4 is arranged in the arc groove, and the conductive terminal 3 is arranged in the slot 4.
[0017] The utility model provides a DC motor brush, in which an external power line is connected to a fixed mounting seat 2. After the brush body 1 is installed in the fixed mounting seat 2, the conductive terminal 3 contacts the external power wiring and is energized. Since the brush body 1 can be installed in the arc groove of the fixed mounting seat 2 by embedded installation, and the conductive terminal 3 is located in the slot 4 at this time, when the brush body 1 is worn out after long-term use, the brush body 1 can be taken out from one side and replaced. Since the brush body 1 itself is not directly connected to the external power wiring, it is relatively easy to replace, thereby making later maintenance more convenient.
[0018] In a possible implementation, sliding lock buckles 5 are symmetrically arranged on the side walls of the fixed mounting seat 2, and the sliding lock buckles 5 include a bottom slide plate 51 and a sliding locking member 52. The sliding locking member 52 can fix the brush body 1 from both sides after the brush body 1 is installed, thereby improving the structural stability.
[0019] How to fix the sliding locking member 52 is known in the art and can be adjusted according to actual needs, such as using a snap-fit structure, a screw-tightening structure, etc.
[0020] In a possible implementation, fixing plates 6 are provided at the upper and lower ends of the back side of the fixing mounting seat 2. The fixing plates 6 are provided to set the fixing mounting seat 2 in the motor.
[0021] In a possible implementation, two threaded mounting holes 7 are provided on the fixing plate 6. The fixing plate 6 is fixed by bolts, and the structure is relatively stable.
[0022] In a possible implementation, a toggle plate 8 is provided on the sliding locking member 52. After the toggle plate 8 is provided, the sliding locking member 52 can be easily toggled.
[0023] It is worth mentioning that for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A DC motor brush, characterized in that: It comprises a brush body and a fixed mounting seat, wherein a conductive terminal is arranged on the back of the brush body, an arc groove is arranged on the front side of the fixed mounting seat, the brush body is arranged in the arc groove, an open slot is arranged in the arc groove, and the conductive terminal is arranged in the open slot.
2. The DC motor brush according to claim 1, characterized in that: Sliding lock buckles are symmetrically arranged on the side walls of both sides of the fixed mounting seat, and the sliding lock buckles include a bottom sliding groove plate and a sliding locking piece.
3. The DC motor brush according to claim 2, characterized in that: The upper and lower ends of the back side of the fixed mounting seat are provided with fixing plates.
4. The DC motor brush according to claim 3, characterized in that: The fixing plate is provided with two threaded mounting holes.
5. The DC motor brush according to claim 4, characterized in that: The sliding locking member is provided with a toggle plate.