CN212969287U - Brush motor with high-efficiency and constant-force carbon brush holder assembly structure - Google Patents
Brush motor with high-efficiency and constant-force carbon brush holder assembly structure Download PDFInfo
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- CN212969287U CN212969287U CN202021507694.5U CN202021507694U CN212969287U CN 212969287 U CN212969287 U CN 212969287U CN 202021507694 U CN202021507694 U CN 202021507694U CN 212969287 U CN212969287 U CN 212969287U
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- brush holder
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Abstract
The brush motor with the high-efficiency and constant-force carbon brush holder component structure comprises an end cover and a carbon brush component fixedly arranged on the end cover; the carbon brush assembly comprises a carbon brush frame, a carbon brush and a constant force spring; the carbon brush holder is integrally formed by injection molding, fixing legs are formed at the lower end of the carbon brush holder and are suitable for being fixedly connected with the end cover, a brush holder is formed at the upper end of the carbon brush holder, a sliding groove is formed in the brush holder along the longitudinal direction and penetrates through the brush holder, hole parts are formed in two sides of the brush holder along the transverse direction, the hole parts in the two sides penetrate through the sliding groove, and limiting wings extend out of the brush holder towards the two sides; the carbon brush is arranged in the sliding groove in a sliding mode along the longitudinal direction, and the constant-force spring comprises an arc section and curling sections arranged at two ends of the arc section. The device has the advantages of simple structure, convenience in assembly, high stability, good reliability and long service life.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to carbon brush holder subassembly structure.
Background
The carbon brush is a device for transmitting energy or signals between a fixed part and a rotating part of a motor or a generator or other rotating machinery, is generally made of pure carbon and a coagulant, is generally square in shape, is clamped on a metal support (namely a carbon brush holder), is tightly pressed on a rotating shaft by a spring inside, and transmits electric energy to a coil through a phase changer when the motor rotates. In the prior art, the carbon brush holder assembly of the brush motor is mostly of a structure that an epoxy glass cloth plate is riveted with a copper brush holder and a spiral spring is arranged in the carbon brush holder assembly. However, the carbon brush holder assembly with the structure has the advantages of complex assembly process, more parts, low assembly efficiency and high cost; and the spiral spring can be used along with the carbon brush of the motor, the elasticity is continuously changed, the performance of the motor is unstable, and the service life of the motor is greatly shortened.
Therefore, it is an urgent need to solve the above-mentioned problems by those skilled in the art to improve the structure of the carbon brush holder assembly of the conventional motor to overcome the above-mentioned disadvantages.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, convenient assembling, stability is high, good reliability, long service life's brush motor that has high efficiency, constant force carbon brush frame subassembly structure.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a brush motor with a high-efficiency and constant-force carbon brush holder assembly structure comprises an end cover and a carbon brush assembly fixedly arranged on the end cover; the method is characterized in that: the carbon brush assembly comprises a carbon brush frame, a carbon brush and a constant force spring;
the carbon brush holder is integrally formed by injection molding, fixing legs are formed at the lower end of the carbon brush holder and are suitable for being fixedly connected with the end cover, a brush holder is formed at the upper end of the carbon brush holder, a sliding groove is formed in the brush holder along the longitudinal direction and penetrates through the brush holder, hole parts are formed in two sides of the brush holder along the transverse direction, the hole parts in the two sides penetrate through the sliding groove, and limiting wings extend out of the brush holder towards the two sides;
the carbon brush is arranged in the sliding groove in a sliding mode along the longitudinal direction;
the constant-force clockwork spring comprises an arch section and curled sections arranged at two ends of the arch section, the arch section is suitable for penetrating through the hole part and abutting against the rear end of the carbon brush, and the curled sections at two ends respectively abut against the limiting wings at two sides; the constant-force spring applies a constant elastic force to the carbon brush and forces the carbon brush to always abut against the rotating shaft.
Preferably, the number of the fixing pins is two, and the fixing pins are provided with U-shaped grooves; the U-shaped groove is suitable for installing a bolt and is fixed on the end cover through the bolt. The bolt fixing mode is a conventional choice, and the U-shaped groove can make the fixed carbon brush subassembly have certain regulation allowance, guarantees the reliability of assembly.
As a conventional setting, the brush motor further comprises a power line and a ground wire assembly, the power line is electrically connected with the carbon brush, the ground wire assembly is electrically connected with the end cover, a wire hole is formed in the end cover, and the power line and the ground wire assembly penetrate through the wire hole.
As an improvement, the power line is connected to the upper end of the carbon brush, and the upper side of the brush holder is provided with a abdicating groove. The arrangement of the receding groove can avoid the interference between the power line and the carbon brush holder.
Preferably, the limiting wings are of an arc structure extending forwards. The limiting wings of the arc-shaped structure can cover the curling sections from two sides, and can protect the constant-force spring while leaving a deformation space for curling.
Compared with the prior art, the utility model has the advantages of: this scheme adopts the mode of whole moulding plastics through improved design carbon brush frame, and the brush holder that is used for installing the carbon brush of shaping simultaneously on injection moulding's carbon brush frame has removed the riveting copper brush holder that uses in the primary structure, adopts a pair of constant force clockwork spring to replace coil spring moreover. The motor has the advantages of simple structure, convenience in installation, high assembly efficiency, long service life of the motor and high stability and reliability of the motor.
Drawings
Fig. 1 is a front view of a preferred embodiment according to the present invention;
fig. 2 is a cross-sectional view taken along a-a in fig. 1 according to a preferred embodiment of the present invention;
fig. 3 is a schematic perspective view of a carbon brush assembly according to a preferred embodiment of the present invention;
fig. 4 is a front view of a carbon brush assembly according to a preferred embodiment of the present invention;
fig. 5 is a cross-sectional view taken along the direction B-B in fig. 4, in accordance with a preferred embodiment of the present invention;
fig. 6 is an exploded view of a carbon brush assembly according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
As shown in fig. 1 to 6, a preferred embodiment of the present invention includes an end cap 1, a carbon brush assembly 2 fixedly disposed on the end cap 1, and a power line 3 electrically connected to the carbon brush assembly 2 and a ground wire assembly 4 electrically connected to the end cap 1. The carbon brush assembly 2 comprises a carbon brush frame 21, a carbon brush 22 and a constant force clockwork spring 23; specifically, the method comprises the following steps:
the carbon brush holder 21 is integrally injection molded, the fixing leg 211 is formed at the lower end of the carbon brush holder 21, the fixing leg 211 is suitable for fixedly connecting the end cap 1, the brush holder 212 is formed at the upper end of the carbon brush holder 21, the brush holder 212 is longitudinally provided with a sliding groove 2121, the sliding groove 2121 penetrates through the brush holder 212, two sides of the brush holder 212 are transversely provided with hole parts 2122, the hole parts 2122 at two sides penetrate through the sliding groove 2121, and the brush holder 212 is further extended with the limiting wings 213.
The carbon brush 22 is slidably disposed in the sliding groove 2121 in the longitudinal direction.
The constant force spring 23 includes an arc section 231 and curled sections 232 disposed at both ends of the arc section, the arc section 231 is adapted to pass through the hole portion 2122 and abut against the rear end of the carbon brush 22, and the curled sections 232 at both ends abut against the limiting wings 213 at both sides respectively; the constant-force clockwork spring 23 applies a constant elastic force to the carbon brush 22 and forces the carbon brush 22 to always abut against the rotating shaft.
In this embodiment, there are two fixing legs 211, and a U-shaped groove 2111 is formed on the fixing legs 211; the U-shaped slot 2111 is adapted to receive a bolt 5 and is secured to the end cap 1 by the bolt 5. The end cover 1 is provided with a wire hole 11 through which the power supply wire 3 and the grounding wire assembly 4 pass. The power cord 3 is connected to the upper end of the carbon brush, and the upper side of the brush holder 212 is provided with an abdicating groove 2123. The wing 213 has an arc structure extending forward.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A brush motor with a high-efficiency and constant-force carbon brush holder assembly structure comprises an end cover and a carbon brush assembly fixedly arranged on the end cover; the method is characterized in that: the carbon brush assembly comprises a carbon brush frame, a carbon brush and a constant force spring;
the carbon brush holder is integrally formed by injection molding, fixing legs are formed at the lower end of the carbon brush holder and are suitable for being fixedly connected with the end cover, a brush holder is formed at the upper end of the carbon brush holder, a sliding groove is formed in the brush holder along the longitudinal direction and penetrates through the brush holder, hole parts are formed in two sides of the brush holder along the transverse direction, the hole parts in the two sides penetrate through the sliding groove, and limiting wings extend out of the brush holder towards the two sides;
the carbon brush is arranged in the sliding groove in a sliding mode along the longitudinal direction;
the constant-force clockwork spring comprises an arch section and curled sections arranged at two ends of the arch section, the arch section is suitable for penetrating through the hole part and abutting against the rear end of the carbon brush, and the curled sections at two ends respectively abut against the limiting wings at two sides; the constant-force spring applies a constant elastic force to the carbon brush and forces the carbon brush to always abut against the rotating shaft.
2. A brushed electric motor having an efficient, constant force carbon brush holder assembly construction according to claim 1, wherein: the number of the fixing pins is two, and the fixing pins are provided with U-shaped grooves; the U-shaped groove is suitable for installing a bolt and is fixed on the end cover through the bolt.
3. A brushed electric motor having an efficient, constant force carbon brush holder assembly construction according to claim 1, wherein: the brush motor further comprises a power line and a grounding line assembly, the power line is electrically connected with the carbon brush, the grounding line assembly is electrically connected with the end cover, a line hole is formed in the end cover, and the power line and the grounding line assembly penetrate through the line hole.
4. A brushed electric motor having an efficient, constant force carbon brush holder assembly construction according to claim 3, wherein: the power cord is connected to the upper end of the carbon brush, and the upper side of the brush holder is provided with a abdicating groove.
5. A brushed electric motor having an efficient, constant force carbon brush holder assembly construction according to claim 1, wherein: the limiting wings are of arc structures extending forwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021507694.5U CN212969287U (en) | 2020-07-27 | 2020-07-27 | Brush motor with high-efficiency and constant-force carbon brush holder assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021507694.5U CN212969287U (en) | 2020-07-27 | 2020-07-27 | Brush motor with high-efficiency and constant-force carbon brush holder assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212969287U true CN212969287U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021507694.5U Active CN212969287U (en) | 2020-07-27 | 2020-07-27 | Brush motor with high-efficiency and constant-force carbon brush holder assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212969287U (en) |
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2020
- 2020-07-27 CN CN202021507694.5U patent/CN212969287U/en active Active
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