CN213279406U

CN213279406U - Electric machine

Info

Publication number: CN213279406U
Application number: CN202021432636.0U
Authority: CN
Inventors: 廖永盛; 张道平; 赵军; 王祥玉
Original assignee: Hongqi Electromechanical Technology Anhui Co ltd
Current assignee: Hongqi Electromechanical Technology Anhui Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-05-25
Anticipated expiration: 2030-07-20
Also published as: TWM608793U

Abstract

An electric machine comprising a spindle; a housing rotatably disposed on the spindle; a stator disposed on the spindle; a rotor disposed radially outward of the stator; a gear mechanism for connecting the rotor and the housing; a gear ring for meshing with the gear mechanism; the fixed seat is used for fixing the gear ring on the mandrel; and the connecting piece is used for connecting the stator and the fixed seat. This application drives gear mechanism rotation through the rotor, and gear mechanism drives the casing and sets up the connecting piece and connect stator and fixing base with output power to do benefit to the stator heat dissipation and promote the holistic stability of motor.

Description

Electric machine

Technical Field

The utility model relates to a power device field especially relates to a motor.

Background

As more and more power-assisted vehicles become a fashion and practical means of transportation, higher demands are also placed on the motors as core drive components.

The motor of the traditional moped is an important component in the whole vehicle, and when the moped is used for a long time, parts of the motor can be deformed or loosened, so that the moped generates large noise in the using process, and the riding experience and the service life of the motor are influenced. In addition, the motor can produce a large amount of heat in the use, and the overheated part that can harm of motor has also influenced the life of motor.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a motor to reduce noise and improve the service life of the motor.

An embodiment of the utility model provides a motor, including the mandrel, still include:

a housing rotatably disposed on the spindle;

a stator disposed on the spindle;

a rotor disposed radially outward of the stator;

a gear mechanism for connecting the rotor and the housing;

a gear ring for meshing with the gear mechanism;

the fixed seat is used for fixing the gear ring on the mandrel; and

and the connecting piece is used for connecting the stator and the fixed seat.

Further, the connecting piece is colloid, the colloid sets up on the fixing base, just the colloid is used for surrounding a part of stator.

Further, the colloid is arranged on the outer peripheral surface of the mandrel.

Further, the fixing base includes an opening for mounting a circuit board for coupling with the stator and the rotor, respectively.

Further, the colloid is also used for sealing the opening.

Further, the gear mechanism includes:

a first sun gear connected to the rotor;

the primary planet wheel is meshed with the first sun wheel and the gear ring;

the second sun gear is connected with the primary planet gear;

the secondary planet wheel is meshed with the second sun wheel and the gear ring; and

and the planet carrier is connected with the secondary planet wheel and is used for driving the shell to rotate.

Further, the mandrel includes a first through hole in an axial direction.

Further, the motor further includes:

and the clutch piece is respectively connected with the planet carrier and the shell.

Further, the shell comprises an end cover, and a first blind hole is formed in one side, facing the clutch piece, of the end cover;

the clutch member includes a second through hole;

the motor also comprises a fastener for fastening the clutch piece and the end cover, and the fastener penetrates through the second through hole and is fixed on the first blind hole.

Further, still include:

a first bearing provided between the ring gear and the housing; and

and the second bearing is arranged between the fixed seat and the shell.

The application provides a motor passes through the rotor and drives gear mechanism rotatory, and gear mechanism drives the casing and sets up the connecting piece and connect stator and fixing base with output transmission to do benefit to the stator heat dissipation and promote the holistic stability of motor.

Drawings

Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the motor shown in fig. 1 along line ii-ii.

Fig. 3 is an exploded schematic view of the motor shown in fig. 1.

Fig. 4 is a schematic view of a portion of the structure of the motor shown in fig. 1.

Fig. 5 is another schematic structural view of a portion of the motor shown in fig. 1.

Fig. 6 is a partially exploded schematic view of the motor shown in fig. 1.

Description of the main elements

Electrical machine 10

Mandrel 110

First via hole 111

Connecting part 1111

Case 120

Body 121

Containing cavity 1211

End cap 122

Blind hole 1221

Stator 130

Rotor 140

Fixed body 141

Core 142

Gear mechanism 150

First sun gear 151

Primary planet wheel 152

Second sun gear 153

Secondary planet wheel 154

Planet carrier 155

Ring gear 160

Fixed seat 170

Opening 171

Containing cavity 172

Connecting piece 180

Circuit board 190

Clutch 200

Second via 201

Fastener 210

First bearing 220

Second bearing 230

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides an electric machine 10, where the electric machine 10 includes a spindle 110, a housing 120, a stator 130, a rotor 140, a gear mechanism 150, a ring gear 160, a fixing base 170, and a connecting member 180.

The housing 120 is rotatably disposed on the spindle 110, and the stator 130 is disposed on the spindle 110. The rotor 140 is disposed radially outward of the stator 130. The gear mechanism 150 is used to connect the rotor 140 and the housing 120. The ring gear 160 is for meshing with the gear mechanism 150. The fixing base 170 is used for fixing the ring gear 160 to the spindle 110. The connecting member 180 is used to connect the stator 130 and the fixing base 170.

The motor 10 drives the gear mechanism 150 to move through the rotor 140 to input transmission, the gear mechanism 150 is in meshed transmission with the gear ring 160, meanwhile, the gear mechanism 150 drives the shell 120 to rotate to output power, the gear ring 160 is fixedly connected with the spindle 110 through the fixed seat 170, and the stator 130 is fixedly connected with the fixed seat 170 through the connecting piece 180. Therefore, the fixing base 170, the stator 130 and the spindle 110 are fixedly connected with each other to enhance the rigidity of the fixing base 170, prevent the fixing base 170 from deforming in the use process of the motor 10, and avoid affecting the service life of the motor 10.

Referring to fig. 3, the mandrel 110 is provided with a first through hole 111. The first through hole 111 penetrates the spindle 110 in the axial direction of the spindle 110. The first through hole 111 has two ends respectively provided with a connection portion 1111, so that the spindle 110 can be quickly connected to an external structure (not shown) through the connection portions 1111.

In this embodiment, the connection portion 1111 is a screw thread, and the connection portion 1111 is disposed on an inner sidewall of the first through hole 111.

In another embodiment, the connection portion 1111 may be disposed on an outer sidewall of the first through hole 111. Further, the connection portion 1111 may be a holding groove or include a plurality of holding surfaces uniformly spaced apart for holding the external structure, and the holding surfaces may be square, circular or other irregular shapes.

In one embodiment, the housing 120 includes a housing body 121 and an end cap 122. The housing body 121 has an accommodating chamber 1211. The end cap 122 is disposed at one side of the housing body 121 and closes the receiving cavity 1211. The spindle 110, in turn, extends through the housing body 121 and the end cap 122. The stator 130, the rotor 140, the ring gear 160, the fixing base 170, the connecting member 180 and the gear mechanism 150 are all located in the accommodating cavity 1211.

In this embodiment, the stator 130 is annular and is fixedly mounted on the mandrel 110.

In the present embodiment, the rotor 140 includes a fixed body 141 and a core 142. The fixing body 141 is rotatably sleeved on the spindle 110. The core 142 is fixed on a side of the fixing body 141 away from the fixing base 170. The fixing body 141 and the core body 142 may be connected by a concave-convex structure, a bolt, or a mortise-and-tenon structure that are adapted to each other, so as to improve the combination stability of the fixing body 141 and the core body 142.

The gear mechanism 150 includes a first sun gear 151, a primary planetary gear 152, a second sun gear 153, a secondary planetary gear 154, and a carrier 155. The first sun gear 151 is connected to the rotor 140, and the primary planetary gear 152 is engaged with the first sun gear 151 and the ring gear 160. The second sun gear 153 is connected with the primary planet gear 152; the secondary planet gears 154 are meshed with the second sun gear 153 and the ring gear 160. The planet carrier 155 is connected to the secondary planet gears 154 for driving the housing 120 in rotation.

In use, the rotor 140 rotates the first sun gear 151 about the spindle 110. The first sun gear 151 rotates the first planet gear 152, and the first planet gear 152 rotates the second sun gear 153 around the spindle 110. The second sun gear 153 drives the second planet gear 154 to rotate, the second planet gear 154 drives the planet carrier 155 to rotate, and the planet carrier 155 is used for driving the housing 120 to rotate. Through two-stage planetary gear transmission, larger transmission ratio and torque output can be realized; first-level planet wheel 152 and second grade planet wheel 154 all adopt three planet wheel to evenly arrange around mandrel 110, and second sun gear 153 is connected with three first-level planet wheel 152 and adopts three second grade planet wheel 154 to connect planet carrier 155, by planet carrier 155 output power, and whole compact structure is practical, can realize big drive ratio and moment of torsion output, can realize the whole miniaturization of motor again.

In this embodiment, the ring gear 160 is annular, and teeth that mesh with the primary planet gears 152 and the secondary planet gears 154 are provided on the inner sidewall of the ring gear 160.

Referring to fig. 4 and 5, the fixing base 170 includes an opening 171, the opening 171 is used for mounting a circuit board 190, and the circuit board 190 is used for coupling with the stator 130 and the rotor 140 respectively. The stator 130 and the rotor 140 are supplied with current and transmit control signals through the circuit board 190, and the circuit board 190 is installed in the fixing base 170 through the opening 171 of the fixing base 170.

In one embodiment, the connecting member 180 may be a rubber body 180, the rubber body 180 is disposed on the fixing base 170, and the rubber body 180 is used for surrounding a portion of the stator 130. Fixing base 170 and stator 130 fixed connection are through colloid 180, can strengthen fixing base 170's rigidity, avoid fixing base 170 to warp in motor 10 use, can go out stator 130's heat transfer through colloid 180 and fixing base 170 again in motor 10's the course of the work to avoid stator 130 to be in high temperature environment for a long time and influence life.

The colloid 180 is disposed on the outer circumferential surface of the spindle 110, so that the spindle 110, the stator 130 and the fixing base 170 are fixedly connected into a whole through the colloid 180, thereby improving the stability and reliability of the overall structure of the motor 10.

The glue 180 also serves to seal the opening 171. The opening 171 is sealed by the adhesive 180 to achieve waterproofing of the fixing base 170 and the circuit board 190.

The fixing base 170 has a receiving cavity 172, and the stator 130 and the connecting member 180 are located in the receiving cavity 172.

It is anticipated that in other embodiments, the connecting member 180 may not be a gel, but may be made of other materials, such as a metal connecting member, a cement material, or a plastic, as long as the rigidity of the fixing base 170 can be enhanced and the heat dissipation of the stator 130 can be realized; in other embodiments, the connecting member 180 may surround the entire stator 130, as long as the fit between the stator 130 and the rotor 140 is not affected, such as the connecting member 180 is made of rubber, and may surround the entire stator 130, and it is expected that the heat dissipation effect of the stator 130 is better when the rubber surrounds the entire stator 130; in other embodiments, the connecting member 180 may not be connected to the spindle 110, but only the stator 130 and the fixing base 170, and it is expected that the heat dissipation effect of such an arrangement may not be as good as that of an arrangement in which the spindle 110, the stator 130 and the fixing base 170 are integrally fixed; in other embodiments, the connector 180 may not seal the opening 171, and it is anticipated that the waterproof effect will not be as good as the structure that seals the opening 171, but at the same time the circuit board 190 can be easily replaced.

The motor 10 further includes a clutch 200, the clutch 200 being connected to the planet carrier 155 and the housing 120, respectively. Thus, the planet carrier 155 drives the clutch member 200 to move, and the clutch member 200 drives the housing 120 to rotate. Further, the transmission one-way output of the motor 10 is realized through the clutch member 200, and when the rotor 140 stops rotating, the clutch member 200 can continue to rotate.

Referring to FIG. 6, end cap 122 is provided with a blind bore 1221 on the side facing clutch member 200.

The clutch member 200 includes a second through hole 201. The motor 10 further includes a fastener 210, the fastener 210 is used for fastening the clutch member 200 and the end cover 122, and the fastener 210 is fixed in the blind hole 1221 through the second through hole 201.

The motor 10 further includes a first bearing 220 and a second bearing 230, the first bearing 220 being disposed between the ring gear 160 and the housing 120. The second bearing 230 is disposed between the holder 170 and the housing 120. The first bearing 220 and the second bearing 230 can enhance the stability of the ring gear 160 and the fixed seat 170, and prevent the ring gear 160 and the fixed seat 170 from being deformed or shaken due to uneven force applied to the front and the rear during the engagement of the gear mechanism 150.

The motor 10 that this application provided has set up connecting piece 180 in order to strengthen the rigidity of fixing base 170, avoids warping in the use, and connecting piece 180 fixed connection fixing base 170, stator 130 and mandrel 110 for stator 130 can realize the heat dissipation, avoids damaging stator 130 or other parts and then influencing the life of motor 10 because overheated in the use.

In addition, other changes may be made by those skilled in the art without departing from the spirit of the invention, and it is intended that all such changes be considered within the scope of the invention.

Claims

1. An electric machine comprising a spindle, characterized by further comprising:

a housing rotatably disposed on the spindle;

a stator disposed on the spindle;

a rotor disposed radially outward of the stator;

a gear mechanism for connecting the rotor and the housing;

a gear ring for meshing with the gear mechanism;

the fixed seat is used for fixing the gear ring on the mandrel; and

and the connecting piece is used for connecting the stator and the fixed seat.

2. The electrical machine of claim 1,

the connecting piece is the colloid, the colloid sets up on the fixing base, just the colloid is used for surrounding a part of stator.

3. The electrical machine of claim 2,

the colloid is arranged on the peripheral surface of the mandrel.

4. The electrical machine according to claim 2 or 3,

the holder includes an opening for mounting a circuit board for coupling with the stator and the rotor.

5. The motor of claim 4,

the colloid is also used for sealing the opening.

6. The electric machine of claim 1, wherein the gear mechanism comprises:

a first sun gear connected to the rotor;

the primary planet wheel is meshed with the first sun wheel and the gear ring;

the second sun gear is connected with the primary planet gear;

7. The electrical machine of claim 6,

the spindle includes a first through hole in an axial direction.

8. The electric machine of claim 6, further comprising:

9. The electrical machine of claim 8,

the shell comprises an end cover, and a blind hole is formed in one side, facing the clutch piece, of the end cover;

the clutch member includes a second through hole;

the motor also comprises a fastener for fastening the clutch piece and the end cover, and the fastener penetrates through the second through hole and is fixed on the blind hole.

10. The electric machine of claim 1, further comprising:

a first bearing provided between the ring gear and the housing; and

and the second bearing is arranged between the fixed seat and the shell.