CN211557076U

CN211557076U - Motor assembly

Info

Publication number: CN211557076U
Application number: CN201922400455.3U
Authority: CN
Inventors: 李时先
Original assignee: Houpu Transmission System Tangshan Co ltd
Current assignee: Houpu Transmission System Tangshan Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-22
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to the technical field of electric machines, especially, relate to a motor assembly. The fan wheel is arranged at the rear end of the rotor, the commutator is arranged at the rear end of the fan wheel of the rotor, one end of the fan wheel is inserted into the rotor, and the other end of the fan wheel is arranged on the outer side of the commutator; and a carbon brush is arranged in the end cover at a position corresponding to the commutator, the carbon brush is connected with an electrode in the end cover through a brush piece, and a bent part at one side of the brush piece connected with the electrode is provided with a reversely bent reinforcing rib. The fan wheel is arranged in the rotor and the commutator, and the fan wheel is provided with the inclined vent hole, so that the heat dissipation effect of the motor rotor and the commutator is improved; a reversely bent reinforcing rib is arranged at the bent part at one side of the brush piece connected with the electrode; avoid the brush piece to break at the department of bending, improved the life of brush piece through setting up the strengthening rib.

Description

Motor assembly

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a motor assembly.

Background

Along with the continuous improvement of degree of automation of each industry, the kind of motor is more and more abundant, and wherein micro motor more and more uses various different fields, if: the household appliance industry, the automobile industry, the toy industry and the like. The service environment is different, and the requirement on the stability of the motor is high or low. The existing direct current motor assembly comprises a rotor, a stator, a rotating shaft, a casing and the like, is simple in structure, cannot adapt to different use environments, is easy to break, and is short in service life and poor in heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a motor assembly aiming at the technical defects, wherein the fan wheel is arranged in the rotor and the commutator, and the fan wheel is provided with inclined ventilation holes, thus improving the heat dissipation effect of the motor rotor and the commutator; a reversely bent reinforcing rib is arranged at the bent part at one side of the brush piece connected with the electrode; the brush piece is prevented from being broken at the bending position, and the service life of the brush piece is prolonged by arranging the reinforcing ribs; through set up the rubber ring between casing and pivot, avoid the foreign matter to enter into inside the bearing through the pivot, improved the life of bearing.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a motor assembly comprises a shell, a stator, a rotor, a rotating shaft and an end cover, wherein the rear end of the rotor is provided with a fan wheel, the rear end of the fan wheel of the rotor is provided with a commutator, one end of the fan wheel is inserted into the rotor, and the other end of the fan wheel is arranged on the outer side of the commutator; a carbon brush is arranged in the end cover at a position corresponding to the commutator, the carbon brush is connected with an electrode in the end cover through a brush piece, and a bent part at one side of the brush piece connected with the electrode is provided with a reversely bent reinforcing rib; the bearing is arranged at the position where the shell is connected with the rotating shaft, the rubber ring is arranged on the outer side of the bearing, and the rubber ring is connected between the shell and the rotating shaft.

Further optimize this technical scheme, the middle part of flabellum is radial is provided with the flabellum, with the oblique heat dissipation through-hole that is provided with of flabellum plane in the flabellum.

Further optimize this technical scheme, the brush piece is provided with the amortization cotton in the one side of keeping away from the carbon brush, the amortization cotton covers between the carbon brush position and the strengthening rib of brush piece.

Further optimize this technical scheme, the hole and the pivot contact of rubber ring front end, the rubber ring rear end outer fringe is provided with the draw-in groove, the draw-in groove card is in the through-hole of casing.

Compared with the prior art, the utility model has the advantages of it is following: 1. the fan wheel is arranged in the rotor and the commutator, and the fan wheel is provided with the inclined vent hole, so that the heat dissipation effect of the motor rotor and the commutator is improved; 2. a reversely bent reinforcing rib is arranged at the bent part at one side of the brush piece connected with the electrode; the brush piece is prevented from being broken at the bending position, and the service life of the brush piece is prolonged by arranging the reinforcing ribs; 3. the noise generated when the carbon brush is contacted with the commutator can be reduced by the arranged noise reduction cotton. 4. Through set up the rubber ring between casing and pivot, avoid the foreign matter to enter into inside the bearing through the pivot, improved the life of bearing.

Drawings

Fig. 1 is an exploded view of an assembly of an electric motor assembly.

Fig. 2 is a schematic view of the rotor structure of fig. 1.

Fig. 3 is a schematic view of the brush sheet shown in fig. 1.

Fig. 4 is a cross-sectional view of the rubber ring portion of fig. 1.

In the figure: 1. a housing; 101. a through hole; 2. a stator; 3. a rotor; 4. a rotating shaft; 5. an end cap; 6. a fan wheel; 601. a fan blade; 602. a heat dissipating through hole; 7. a commutator; 8. a carbon brush; 9. brushing sheets; 10. an electrode; 1001. strengthening the ribs; 11. a bearing; 12. a rubber ring; 13. silencing cotton; 1201. an inner bore; 1202. a clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-4, a motor assembly includes a housing 1, a stator 2, a rotor 3, a shaft 4, and an end cover 5, and is characterized in that: the rear end of the rotor 3 is provided with a fan wheel 6, the rear end of the fan wheel 6 of the rotor 3 is provided with a commutator 7, one end of the fan wheel 6 is inserted into the rotor 3, the other end is arranged on the outer side of the commutator 7, the middle part of the fan wheel 6 is radially provided with fan blades 601, and the fan blades 601 are provided with heat dissipation through holes 602 which are inclined to the plane of the fan blades 601; the structure of the commutator comprises an end cover 5 and is characterized in that a carbon brush 8 is arranged in a position, corresponding to a commutator 7, in the end cover 5, the carbon brush 8 is connected with an electrode 10 in the end cover 5 through a brush piece 9, a reversely bent reinforcing rib 1001 is arranged at a bent position on one side, connected with the electrode 10, of the brush piece 9, silencing cotton 13 is arranged on one side, far away from the carbon brush 8, of the brush piece 9, and the silencing cotton 13 covers between the position of the carbon brush 8 of the brush piece 9 and the reinforcing rib 1001. The bearing 11 is arranged at the position where the casing 1 is connected with the rotating shaft 4, a rubber ring 12 is arranged on the outer side of the bearing 11, the rubber ring 12 is connected between the casing 1 and the rotating shaft 4, an inner hole 1201 at the front end of the rubber ring 12 is in contact with the rotating shaft 4, a clamping groove 1202 is arranged on the outer edge of the rear end of the rubber ring 12, and the clamping groove 1202 is clamped in the shaft hole 101 of the casing 1.

When in use, as shown in fig. 1-4, the fan wheel 6 is arranged in the rotor 3 and the commutator 7, and the fan wheel 6 is provided with inclined vent holes, so that when the fan wheel 6 rotates along with the rotor 3, hot air around the rotor 3 and the commutator 7 can be taken away, and the heat dissipation effect of the motor rotor 3 and the commutator 7 is improved; a reversely bent reinforcing rib 1001 is arranged at the bent part at the side where the brush piece 9 is connected with the electrode 10; the brush piece 9 is prevented from being broken at the bending position, and the service life of the brush piece 9 is prolonged by arranging the reinforcing ribs 1001; through set up rubber ring 12 between casing 1 and pivot 4, avoid the foreign matter to enter into inside bearing 11 through pivot 4, improved bearing 11's life.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a motor assembly, includes casing (1), stator (2), rotor (3), pivot (4), end cover (5), its characterized in that: the rear end of the rotor (3) is provided with a fan wheel (6), the rear end of the fan wheel (6) of the rotor (3) is provided with a commutator (7), one end of the fan wheel (6) is inserted into the rotor (3), and the other end of the fan wheel is arranged on the outer side of the commutator (7); a carbon brush (8) is arranged in the end cover (5) at a position corresponding to the commutator (7), the carbon brush (8) is connected with an electrode (10) in the end cover (5) through a brush piece (9), and a reversely bent reinforcing rib (1001) is arranged at a bent part at one side of the brush piece (9) connected with the electrode (10); the bearing (11) is arranged at the position where the casing (1) is connected with the rotating shaft (4), the rubber ring (12) is arranged on the outer side of the bearing (11), and the rubber ring (12) is connected between the casing (1) and the rotating shaft (4).

2. An electric motor assembly as set forth in claim 1, wherein: the fan wheel is characterized in that fan blades (601) are radially arranged in the middle of the fan wheel (6), and heat dissipation through holes (602) are formed in the fan blades (601) and are inclined to the plane of the fan blades (601).

3. An electric motor assembly as set forth in claim 1, wherein: one side of the brush piece (9) far away from the carbon brush (8) is provided with silencing cotton (13), and the silencing cotton (13) covers between the position of the carbon brush (8) of the brush piece (9) and the reinforcing ribs (1001).

4. An electric motor assembly as set forth in claim 1, wherein: an inner hole (1201) at the front end of the rubber ring (12) is in contact with the rotating shaft (4), a clamping groove (1202) is formed in the outer edge of the rear end of the rubber ring (12), and the clamping groove (1202) is clamped in the shaft hole (101) of the machine shell (1).