CN209823520U

CN209823520U - Stator and series motor comprising same

Info

Publication number: CN209823520U
Application number: CN201920484329.8U
Authority: CN
Inventors: 钟子芽; 闫鲲; 刘林
Original assignee: Shenzhen Power Motor Industrial Co Ltd
Current assignee: Shenzhen Power Motor Industrial Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2019-12-20
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a stator and contain series excited machine of this stator. The stator comprises a stator chip; a bobbin set including a pair of front bobbins and a pair of rear bobbins fixed to an inner wall of the stator chip; and a terminal group including a plurality of terminals fixed to a rear end surface of the stator chip and independent from the paired rear bobbins. The utility model discloses a stator simple structure, the automated production of being convenient for.

Description

Stator and series motor comprising same

Technical Field

The utility model relates to a motor field particularly, relates to a stator and contain series excited machine of this stator.

Background

The series excited motor is suitable for mass production due to large starting torque, good speed regulation performance and low manufacturing cost, and is widely applied to the fields of household appliances, electric tools and the like in recent years. Those skilled in the art are dedicated to further reduce the manufacturing cost of the series motor, and improve the structural design of the series motor so as to enable the automatic production of the series motor. However, because the stator structure and the production process of the series motor are complicated, the stator cannot be produced by adopting automatic equipment, and thus the automatic production of the series motor is hindered.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model provides a stator, stator simple structure is suitable for automated production.

The utility model discloses a stator includes: the stator chip is provided with an inner wall which defines an accommodating cavity which is communicated with the front and the back; a bobbin set including a pair of front bobbins and a pair of rear bobbins fixed to an inner wall of the stator chip; and a terminal group including a plurality of terminals fixed to a rear end surface of the stator chip and independent from the paired rear bobbins.

In some embodiments of the present invention, the plurality of terminals are circumferentially arranged along the rear end face of the stator chip.

In some embodiments of the present invention, the number of the plurality of terminals is 2 pairs, a first pair of terminals of the 2 pairs of terminals are disposed on both sides of one rear wire frame of the paired rear wire frames, and a second pair of terminals of the 2 pairs of terminals are disposed on both sides of another rear wire frame of the paired rear wire frames.

In some embodiments of the present invention, the first pair of terminals and the second pair of terminals are symmetrically arranged.

In some embodiments of the present invention, the first pair of terminals and the second pair of terminals define a circular plane, and a central angle defined by a center of the circular plane is 95 to 105 ° between any pair of the first pair of terminals and the second pair of terminals.

In some embodiments of the invention, the central angle is 100 °.

The utility model also provides a series excited machine, it includes as above the stator.

The utility model discloses an in some embodiments, the series excited machine still includes installing support and user's terminal surface, the installing support passes through connecting piece and user's terminal surface fixed connection, and the installing support and user's terminal surface is fixed extremely stator chip's preceding terminal surface.

In some embodiments of the present invention, the series motor further includes a motor shaft and a heat sink, the motor shaft is adapted to pass through the user end face and the accommodating chamber of the stator, the heat sink is fixed to the rear end of the motor shaft and adapted to follow the rotation of the motor shaft.

In some embodiments of the invention, the heat sink is a fan.

The utility model has the advantages of:

the stator of the utility model comprises the paired back line racks and the terminal groups which are independent from each other, compared with the back line racks and the terminal groups which are related to each other in the prior art, the stator of the utility model has simple structure and is convenient for automatic production; the arrangement of the mounting bracket of the series motor improves the mounting reliability of the series motor and reduces the manufacturing cost; the arrangement of the heat dissipation piece can reduce the temperature of the series motor during operation and improve the power density of the motor.

Drawings

For understanding the present invention, the present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Fig. 1 is a perspective view of a stator according to an exemplary embodiment of the present invention.

Fig. 2 is a front view of the stator shown in fig. 1.

Fig. 3 is a left side view of the stator shown in fig. 1.

Fig. 4 is a top view of the stator shown in fig. 1.

Fig. 5 is a schematic plan view of a series-wound motor including the stator shown in fig. 1.

Fig. 6 is a schematic plan view of the series-excited motor shown in fig. 5, which is different from fig. 5 in view angle.

Fig. 7 is a schematic plan view of the series-excited motor shown in fig. 5, which is different from fig. 5 in view angle.

Detailed Description

While the stator and series excited machine of the present invention can be embodied in many different forms, the exemplary embodiments will be described in detail herein with reference to the accompanying drawings, it being understood that the description herein should be considered as an exemplification of the principles of the structure of the stator and series excited machine and is not intended to limit the broad aspects herein to the exemplary embodiments.

The terms of orientation such as "front" and "rear" in the present exemplary embodiment are relative to the use state of the stator or the series motor.

Fig. 1 to 4 show a stator 1 of the present invention, the stator 1 comprising: a stator core 10 having an inner wall 101 defining a front-rear through accommodation chamber; a bobbin set 11 including a pair of front bobbins 111 and a pair of rear bobbins 112 fixed to an inner wall of the stator chip 10; and a terminal group 12 including a plurality of terminals 121, the plurality of terminals 121 being fixed to the rear end surface 102 of the stator chip 10 and being independent of the pair of rear bobbins 112. The bobbin set 11 and the terminal set 12 are independent of each other, so that the structure of the bobbin set 11 is simplified, compared with the prior art in which the rear bobbins and the terminal sets are associated with each other, the bobbin set 11 of the exemplary embodiment has a simple structure, and can realize automatic feeding of the vibrating plate and avoid material jamming when being produced by using automatic equipment.

Specifically, the pair of front bobbins 111 and the pair of rear bobbins 112 are disposed opposite and symmetrically.

The terminal set 12 is adapted to engage with a stub of an enameled wire of the stator winding. A plurality of terminals 121 are circumferentially arranged along the rear end face 102 of the stator chip 10 and define a circular plane; specifically, the terminal group 12 is composed of 2 pairs of terminals 121, wherein one pair of terminals 121 is disposed on both sides of one rear bobbin 112, and the other pair of terminals 121 is disposed on both sides of the other rear bobbin 112; the two pairs of terminals 121 are symmetrically arranged, a central angle defined by each pair of terminals 121 and the center of the circular plane is 95-105 °, more specifically, the central angle is 100 °, and a central angle defined by adjacent non-identical pairs of terminals and the center of the circular plane is 80 ° (as shown in fig. 4). Alternatively, the terminal group may include 3 or 4 pairs of terminals, not limited to the above-described 2 pairs of terminals. Alternatively, the central angle defined by the centers of each pair of terminals and the circular plane may be set to any other suitable angle as desired. The arrangement of the terminal group 12 can enable the butt-welding equipment to rotate once to complete the welding connection of the enameled wire of the stator winding and the terminal, greatly improves the production efficiency of the stator and ensures the consistency of the stator structure.

As shown in fig. 5 to 7, the present exemplary embodiment also provides a series motor 2 including the stator 1 described above. The series-wound motor 2 further comprises a mounting bracket 21 and a user end face 22, the mounting bracket 21 is fixedly connected with the user end face 22 through a connecting piece 23 to form a whole, and the mounting bracket 21 and the user end face 22 are fixed to the front end face 103 of the stator chip 10. The integral arrangement of the mounting bracket 21 and the user end face 22 may reduce manufacturing costs and improve reliability.

The series motor 2 further comprises a motor shaft 24 adapted to pass through the user end face 22 and the housing chamber of the stator chip 10. In the operation process, the temperature of the series motor 2 inevitably rises due to heating, and in order to reduce the temperature of the series motor 2 during operation and improve the power density of the series motor 2, the series motor 2 further comprises a heat dissipation member 25 fixed at the rear end of the motor rotating shaft 24, and the heat dissipation member 25 is suitable for rotating along with the motor rotating shaft 24. Specifically, the heat sink 25 may be a fan; more specifically, the fan can select different diameters or types of blades to achieve the desired cooling effect according to the requirements of different application scenarios.

In summary, the stator of the utility model has simple structure and is convenient for automatic production; the arrangement of the mounting bracket of the series motor improves the mounting reliability of the series motor and reduces the manufacturing cost; the arrangement of the heat dissipation piece can reduce the temperature of the series motor during operation and improve the power density of the motor.

Although some embodiments have been described herein by way of example, various modifications may be made to these embodiments without departing from the spirit of the invention, and all such modifications are intended to be included within the scope of the invention as defined in the following claims.

The particular embodiments disclosed herein are illustrative only, as the invention may be modified in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein, and the embodiments disclosed are therefore to be considered illustrative only, and not limited to the details of construction or design herein shown, unless otherwise specified in the claims. Accordingly, the exemplary embodiments disclosed above are susceptible to various substitutions, combinations or modifications, all of which are within the scope of the disclosure. Also, the terms in the claims have their plain, ordinary meaning unless otherwise explicitly and clearly defined by the applicant.

In addition, the number of components in the claims includes one or at least one unless otherwise specified. If there is any inconsistency between the words or terms used in the present invention and the usage or meaning in other documents, the definitions of the words or terms used in the present invention shall be applied.

Claims

1. A stator (1), characterized in that the stator (1) comprises:

a stator core (10) having an inner wall (101) defining a front-to-back through-going accommodation chamber;

a bobbin set (11) including a pair of front bobbins (111) and a pair of rear bobbins (112) fixed to an inner wall 101 of the stator core; and

a terminal group (12) including a plurality of terminals (121), the plurality of terminals (121) being fixed to the rear end surface (102) of the stator chip (10) and being independent of the paired rear bobbins (112).

2. The stator (1) according to claim 1, wherein the plurality of terminals (121) are arranged circumferentially along the rear end face (102) of the stator core piece (10).

3. The stator (1) according to claim 2, wherein the number of the plurality of terminals (121) is 2 pairs, a first pair of the 2 pairs of terminals being arranged on both sides of one (112) of the pair of rear bobbins (112), and a second pair of the 2 pairs of terminals being arranged on both sides of the other (112) of the pair of rear bobbins (112).

4. A stator (1) according to claim 3, characterized in that said first pair of terminals is arranged symmetrically to said second pair of terminals.

5. The stator (1) according to claim 4, wherein the first pair of terminals and the second pair of terminals define a circular plane, and wherein a center angle defined by a center of any one of the first pair of terminals and the second pair of terminals with a center of the circular plane is 95 to 105 °.

6. A stator (1) according to claim 5, characterized in that the central angle is 100 °.

7. A series-wound electrical machine (2) comprising a stator (1) according to any of claims 1 to 6.

8. Series machine (2) according to claim 7, characterized in that the series machine (2) further comprises a mounting bracket (21) and a user end face (22), the mounting bracket (21) being fixedly connected with the user end face (22) by means of a connection piece (23), and the mounting bracket (21) and the user end face (22) being fixed to the front end face (103) of the stator chip (10).

9. The series motor (2) according to claim 8, wherein the series motor (2) further comprises a motor shaft (24) and a heat sink (25), the motor shaft (24) being adapted to pass through the user end face (22) and the housing chamber of the stator chip (10), the heat sink (25) being fixed to a rear end of the motor shaft (24) and being adapted to rotate with the motor shaft (24).

10. A series motor (2) as claimed in claim 9, wherein said heat sink (25) is a fan.