CN-224204554-U - Anti-drop's brush yoke power cord fixed knot constructs

CN224204554UCN 224204554 UCN224204554 UCN 224204554UCN-224204554-U

Abstract

The utility model discloses an anti-falling electric brush holder power line fixing structure which comprises an annular brush holder body, wherein a carbon brush is combined with an inner ring of the brush holder body, a power line is led out by welding the carbon brush, wire passing holes penetrating through end faces of two sides of the brush holder body are formed in the brush holder body, and the welded power line is led out after passing through the wire passing holes. In the anti-falling power line fixing structure of the brush frame, the power line fixing scheme of non-welding area stress transfer is adopted, so that an external force acting point can be far away from a welding point, the connection reliability of the power line led out of the brush frame is improved, and the structure is simple and easy to realize.

Inventors

ZHAO HONGLI
WANG DONGLI

Assignees

定兴县宇捷直流力矩电机制造有限公司

Dates

Publication Date: 20260505
Application Date: 20250421

Claims (5)

1. The utility model provides an anti-drop's brush yoke power cord fixed knot constructs, includes annular brush yoke body, the inner circle combination of brush yoke body is provided with the carbon brush, the carbon brush welding has drawn forth the power cord, its characterized in that, the brush yoke body has been seted up and has been run through the wire hole of crossing of brush yoke body both sides terminal surface, the power cord after the welding passes draw forth behind the wire hole.
2. The anti-drop brush holder power cord fixing structure according to claim 1, wherein an inner concave wire outlet concave part is arranged on the outer side wall of the brush holder body at a position corresponding to a welding point of the carbon brush and the power cord, and a buried wire groove is arranged on the end face of the brush holder body between the wire outlet concave part and the wire passing hole in a communicating manner; The welded power line is sequentially embedded in the wire outlet concave part and the wire embedding groove and then led out through the wire passing hole.
3. The anti-drop brush holder power cord fixing structure according to claim 2, wherein the brush holder body is provided with a protecting portion protruding from an end face of the wire outlet recess for protecting a welding point of the power cord and the carbon brush.
4. The anti-falling brush holder power cord fixing structure according to claim 2, wherein an inner concave wire passing notch is formed in the outer edge of the brush holder body, and two sides of the wire passing notch are respectively communicated with the wire burying groove and the wire outlet concave part; The welded power line is buried in the wire outlet concave part and then led to the wire passing notch, then passes through the wire passing notch and then buried in the wire burying groove and led to the wire passing hole and then passes through the wire passing hole.
5. The structure for fixing a power cord of a brush holder according to claim 1, 2, 3 or 4, wherein the welding point of the power cord and the power cord are both attached to the brush holder body by spot gluing.

Description

Anti-drop's brush yoke power cord fixed knot constructs Technical Field The utility model relates to a motor structure, in particular to an anti-falling brush holder power line fixing structure. Background In the prior art, the power line led out of the brush holder is generally fixed by direct welding, namely, the welding point of the power line and the carbon brush is the only fixed point of the power line on the brush holder, and then the power line is directly led out, so that the fixing structure has the following defects: 1. Stress concentration, namely, a mechanical property mutation area is formed at a welding point by hardening soldering tin, and stress is concentrated at the welding point during vibration or bending, so that the power line is easy to fall off; 2. The reliability is poor, the power line is fixed by adopting a direct welding mode, and the power line cannot effectively face a complex application environment; 3. the space is limited, and for the miniature brush holder, the protection structure such as a traditional wire clamp or a sleeve cannot be additionally arranged. Disclosure of utility model The utility model provides an anti-falling brush holder power line fixing structure aiming at the defects of the prior art. The utility model discloses an anti-falling power line fixing structure of a brush frame, which comprises an annular brush frame body, wherein a carbon brush is combined with an inner ring of the brush frame body, the carbon brush is welded and led out to form a power line, the brush frame body is provided with a wire passing hole penetrating through two side end surfaces of the brush frame body, and the welded power line is led out after passing through the wire passing hole. In the anti-falling brush holder power line fixing structure, the outer side wall of the brush holder body is provided with the concave wire outlet concave part at the position corresponding to the welding point of the carbon brush and the power line, and the end face of the brush holder body between the wire outlet concave part and the wire through hole is communicated with a buried wire groove; The welded power line is sequentially embedded in the wire outlet concave part and the wire embedding groove and then led out through the wire passing hole. In the anti-falling brush holder power line fixing structure, the brush holder body is convexly provided with the protection part for protecting the welding point of the power line and the carbon brush corresponding to the end face of the outgoing line concave part. In the anti-falling brush holder power line fixing structure, the outer edge of the brush holder body is provided with the concave line passing notch, and two sides of the line passing notch are respectively communicated with the buried line groove and the line outlet concave part; The welded power line is buried in the wire outlet concave part and then led to the wire passing notch, then passes through the wire passing notch and then buried in the wire burying groove and led to the wire passing hole and then passes through the wire passing hole. In the anti-falling power line fixing structure of the brush frame, the welding point of the power line and the power line are adhered to the brush frame body by spot gluing. In the anti-falling power line fixing structure of the brush frame, the power line fixing scheme of non-welding area stress transfer is adopted, so that an external force acting point can be far away from a welding point, the connection reliability of the power line led out of the brush frame is improved, and the structure is simple and easy to realize. Drawings FIG. 1 is a schematic view of a power cord fixing structure of an anti-falling brush holder according to the present utility model; fig. 2 is a schematic structural view of a brush holder body in the anti-falling brush holder power cord fixing structure according to the present utility model. Detailed Description The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description. As shown in fig. 1 and 2, the anti-falling brush holder power cord fixing structure of the present utility model includes an annular brush holder body 1, wherein carbon brushes (not shown in the drawings, the carbon brushes are mounted and fixed by fixing members arranged at fixing holes 22) are combined with an inner ring of the brush holder body 1, and the power cord 2 is welded and led out from the carbon brushes. In the utility model, the brush holder body 1 is also provided with a wire passing hole 10 penetrating through the end surfaces of the two sides of the brush holder body 1, and the welded power wire 2 is led out after passing through the wire passing hole 10. In order to further install protection accessories such as a sleeve outside the power cord 2, the diameter of the wire through hole 10 is generally 0.1