CN210111243U

CN210111243U - Shock-resistant combined electric brush

Info

Publication number: CN210111243U
Application number: CN201921392646.3U
Authority: CN
Inventors: 沈利祥; 吕伟; 倪一凡; 沈俊华
Original assignee: HUZHOU TAIPING WEITE ELECTRIC MACHINE CO Ltd
Current assignee: HUZHOU TAIPING WEITE ELECTRIC MACHINE CO Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-02-21
Anticipated expiration: 2029-08-26

Abstract

The utility model provides a pair of type of shocking resistance combination brush, include: a metal brush body; the metal brush body is provided with carbon brush grooves which penetrate through two sides of the metal brush body; and a carbon brush; the carbon brush is arranged in the carbon brush groove; wherein, one side of the metal brush body is provided with a vertical stress surface; the other end of the carbon brush extends out of the brush body to form a brush head. The structure is mainly formed by combining a metal part and a carbon brush part; the carbon brush part is wrapped by the metal part of the structure, so that the pressure of the spring of the carbon brush part is mainly applied to the hand-operated surface of the metal brush body, the stress of the carbon brush part is eliminated, and the brittleness of the carbon brush is protected; the reliability and shock resistance of the hook type brush are improved.

Description

Shock-resistant combined electric brush

Technical Field

The utility model relates to a motor accessory field, concretely relates to type of shocking resistance combination brush.

Background

At present, brushes (Brush) are an important component of electrical machines, responsible for conducting the current between a rotating and a stationary part. Since it is made of graphite, it is also called carbon brush. The brush is usually mounted on a commutator or slip ring and is a sliding contact. It is required to have the characteristics of smoothness, wear resistance, good conductivity and the like. In practice, a slip ring is usually equipped with a minimum of two brushes to avoid a single brush from contacting poorly and becoming open circuit. Current hook-type brushes, which employ a neck that is bent from all-graphite, break during assembly or under vibration conditions due to low structural strength.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a type of shocking resistance combination brush has solved current hook-type brush, and it adopts the crooked neck of full graphite, because structural strength is not high, cracked defect under assembly process or vibration condition.

(II) technical scheme

In order to solve the technical problem, the utility model provides a pair of type of shocking resistance combination brush includes: a metal brush body; the metal brush body is provided with carbon brush grooves which penetrate through two sides of the metal brush body; and a carbon brush; the carbon brush is arranged in the carbon brush groove; wherein, one side of the metal brush body is provided with a vertical stress surface; the other end of the carbon brush extends out of the brush body to form a brush head. The structure is mainly formed by combining a metal part and a carbon brush part; the carbon brush part is wrapped by the metal part of the structure, so that the pressure of the spring of the carbon brush part is mainly applied to the hand-operated surface of the metal brush body, the stress of the carbon brush part is eliminated, and the brittleness of the carbon brush is protected; the reliability and shock resistance of the hook type brush are improved.

Preferably, one end of the carbon brush is provided with a curved surface matched with the curved surface. The utility model discloses a set up carbon brush one end and have a face of rolling over, avoided the spring to touch the carbon brush for the carbon brush atress slides.

Preferably, the metal brush body includes a movable portion and a fixed portion at one end of the movable portion.

Preferably, the fixing portion has a circular mounting hole.

Preferably, the carbon brush groove is arranged in the movable part and penetrates through the movable part to divide the movable part into an upper side end and a lower side end, and the upper side end comprises an inclined plane close to one side of the brush head and a reinforcing arc surface located on one side of the inclined plane. The utility model discloses a close on the inclined plane of brush head one side and be located the reinforcement cambered surface of inclined plane one side, its structural strength who has strengthened the metal brush body movable part prevents effectively that the upside end atress of the metal brush body from warping.

Preferably, the lower side end is provided with a reinforcing groove which is inwards sunken.

(III) advantageous effects

The utility model provides a pair of type of shocking resistance combination brush, it has following advantage:

1. the structure is mainly formed by combining a metal part and a carbon brush part; the carbon brush part is wrapped by the metal part of the structure, so that the pressure of the spring of the carbon brush part is mainly applied to the hand-operated surface of the metal brush body, the stress of the carbon brush part is eliminated, and the brittleness of the carbon brush is protected; the reliability and shock resistance of the hook type brush are improved.

Drawings

Fig. 1 is a perspective view of an impact-resistant composite brush of embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of an impact-resistant composite brush of embodiment 1 of the present invention.

1. The brush comprises a metal brush body, 2, a carbon brush, 3, a carbon brush groove, 4, a stress surface, 5, a brush head, 6, a movable part, 7, a fixing part, 8, a mounting hole, 9, an upper side end, 10, a lower side end, 11, an inclined plane, 12, a reinforcing arc surface, 13, a reinforcing groove, 14 and a folded surface.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 and fig. 2, the utility model provides an impact-resistant combined brush, which comprises a metal brush body 1 and a carbon brush 2; the metal brush body is provided with carbon brush grooves 3 which penetrate through two sides of the metal brush body; the carbon brush is arranged in the carbon brush groove; wherein, one side of the metal brush body is provided with a vertical stress surface 4; the other end of the carbon brush extends out of the brush body to form a brush head 5. The structure is mainly formed by combining a metal part and a carbon brush part; the carbon brush part is wrapped by the metal part of the structure, so that the pressure of the spring of the carbon brush part is mainly applied to the hand-operated surface of the metal brush body, the stress of the carbon brush part is eliminated, and the brittleness of the carbon brush is protected; the reliability and shock resistance of the hook type brush are improved.

And one end of the carbon brush is provided with a folded surface 14. The metal brush body comprises a movable part 6 and a fixed part 7 positioned at one end of the movable part. The fixing portion has a circular mounting hole 8. The carbon brush groove is arranged in the movable part, penetrates through the movable part, and divides the movable part into an upper side end 9 and a lower side end 10, wherein the upper side end comprises an inclined surface 11 close to one side of the brush head and a reinforcing arc surface 12 positioned on one side of the inclined surface. The lower side end has a reinforcing groove 13 depressed inward.

The embodiment of the utility model provides an in, during the installation, directly block the carbon brush in the metal brush body. When the motor is used, the mounting hole is inserted into the rotating shaft of the motor in an aligning way; the spring is pressed against the force-bearing surface so that the brush head contacts the slip ring.

Example 2

The utility model provides an impact-resistant combined electric brush, which comprises a metal brush body and a carbon brush; the metal brush body is provided with carbon brush grooves which penetrate through two sides of the metal brush body; the carbon brush is arranged in the carbon brush groove; wherein, one side of the metal brush body is provided with a vertical stress surface; the other end of the carbon brush extends out of the brush body to form a brush head. The cambered surface of carbon brush groove one end, carbon brush one end has the curved surface with this cambered surface looks adaptation.

The above-mentioned embodiments are only used for explaining the present invention, wherein the structure, connection mode, etc. of each component can be changed, all the equivalent transformation and improvement performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. An impact resistant composite brush, comprising:

a metal brush body; the metal brush body is provided with carbon brush grooves which penetrate through two sides of the metal brush body; and

a carbon brush; the carbon brush is arranged in the carbon brush groove;

wherein, one side of the metal brush body is provided with a vertical stress surface; the other end of the carbon brush extends out of the brush body to form a brush head.

2. The impact resistant composite brush of claim 1, wherein the arc surface of one end of the carbon brush groove and the one end of the carbon brush have a folded surface.

3. An impact-resistant composite brush according to claim 1 or 2, wherein said metallic brush body includes a movable portion and a fixed portion at one end of the movable portion.

4. The impact resistant composite brush of claim 3 wherein said stationary portion has a circular mounting hole.

5. The impact resistant composite brush of claim 4 wherein said carbon brush channel is disposed in and extends through said movable portion to separate said movable portion into an upper side end and a lower side end, said upper side end including a beveled surface adjacent a side of said brush head and a reinforced arcuate surface on a side of said beveled surface.

6. The impact-resistant composite brush of claim 5 wherein said lower side end has an inwardly recessed reinforcing groove.