CN220605657U

CN220605657U - Motor

Info

Publication number: CN220605657U
Application number: CN202322240356.XU
Authority: CN
Inventors: 王阿龙; 朱冬梅; 黎文强
Original assignee: Nideco Electric Dongguan Co ltd
Current assignee: Nideco Electric Dongguan Co ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-03-15
Anticipated expiration: 2033-08-21

Abstract

The utility model relates to an electric motor, providing an electric motor comprising: a stator assembly, a rotor assembly, a circuit board, and a bearing retaining member; the stator assembly has a stator core, a coil, and the rotor assembly has a shaft, a rotor magnet, and a rotor magnet holder; the circuit board and the bearing holding component are integrated into a combined component; the stator assembly is mounted on the outer periphery of the bearing retaining member. The stator assembly is injection molded with the integrally formed composite part. The stator assembly is located inside the rotor assembly. The utility model can shorten the assembly time of the product, improve the assembly efficiency and improve the product performance.

Description

Motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor.

Background

An electric machine (commonly called a "motor") refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction. The main structure of the motor comprises a base plate, a stator, a rotor, a bearing sleeve and other parts, the current motor structure comprises the base plate, the stator and the bearing sleeve, which belong to three independent parts, and when the motor is assembled, the bearing sleeve needs to be pressed into the base plate first, and then the bearing sleeve and the base plate after being fixed are pressed into the stator.

The base plate, the stator and the bearing sleeve belong to three independent components, so that the motor is complex in process during assembly, multiple pressing-in is needed, and the production efficiency is low; during the pressing-in process, the conditions such as scraps, eccentric structure and the like possibly occur; the assembled motor product may have a problem of insufficient fastening strength. In addition, two sets of pressing equipment are needed to be configured for multiple pressing, equipment cost and maintenance cost are high, and labor cost is high.

Disclosure of Invention

The utility model mainly solves the technical problems that a motor structure substrate, a stator and a bearing sleeve in the prior art belong to three independent components, so that the motor is complex in process, needs to be pressed in for many times, has low production efficiency, and the assembled motor product possibly has insufficient joint strength.

The utility model provides a motor, comprising: a stator assembly, a rotor assembly, a circuit board, and a bearing retaining member;

the stator assembly has a stator core, a coil, and the rotor assembly has a shaft, a rotor magnet, and a rotor magnet holder;

the circuit board and the bearing holding component are integrated into a combined component;

the stator assembly is mounted on the outer periphery of the bearing retaining member.

Preferably, the stator assembly is injection molded with the integrally formed composite part.

Preferably, the stator assembly is located inside the rotor magnet.

Preferably, the end of the shaft is provided with a thread.

Preferably, the bearing holding member is provided with a first bearing at an end close to the screw thread and a second bearing at an end far from the screw thread.

Preferably, the first bearing has a size greater than that of the second bearing.

Preferably, a latch is provided on the shaft.

Compared with the prior art, the motor provided by the utility model has the following advantages:

1. through the integrated into one piece with circuit board and bearing holding part, reduced the process of assembling the circuit board to bearing holding part when the equipment motor, shortened the equipment time of product, improved packaging efficiency.

2. The circuit board and the bearing holding part are integrally formed, so that the connection strength of the motor can be ensured, and the product performance is improved.

3. The stator assembly and the integrally formed combined part are injection molded together, and the fixed part is integrated through injection molding, so that the waterproof property of the motor is improved, and the conditions of chip generation, structural eccentricity and the like in the pressing-in process are avoided. And the pressing-in equipment in the assembly process of the base plate, the stator and the bearing sleeve is omitted, the equipment cost and the maintenance cost are reduced, and the labor cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a motor provided by the utility model;

fig. 2 is a schematic structural diagram of a motor according to the present utility model;

FIG. 3 is a schematic diagram of the internal structure of the motor (with the rotor magnet holder removed);

FIG. 4 is a schematic diagram of the internal structure of the motor according to the present utility model (with rotor magnet holder and rotor magnets removed);

FIG. 5 is a schematic view showing the internal structure of a combined part composed of a circuit board and a bearing holding part according to the present utility model;

FIG. 6 is a schematic diagram showing the internal structure of a combined component comprising a circuit board and a bearing holding member according to the present utility model;

fig. 7 is a schematic view of the stator assembly and the combined components provided by the present utility model.

Reference numerals: 1. a circuit board; 2. a bearing holding member; 3. a stator core; 4. a coil; 5. a shaft; 6. a rotor magnet; 7. a first bearing; 8. a second bearing; 9. a rotor magnet holder; 10. a thread; 11. a bolt.

Detailed Description

In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects achieved clearer, the utility model is further described in detail below with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present utility model are shown in the accompanying drawings.

As shown in fig. 1 to 4, an electric motor provided in an embodiment of the present utility model includes: a stator assembly, a rotor assembly, a circuit board 1 and a bearing holding member 2.

The stator assembly comprises a stator core 3 and a coil 4, wherein the coil 4 is wound on the tooth part of the stator core 3, and the rotor assembly comprises a shaft 5, a rotor magnet 6 and a rotor magnet retainer 9; the shaft 5 passes through the bearing holding member 2, the shaft 5 is fixedly connected with the rotor magnet holder 9, and the rotor magnet 6 is mounted on the inner wall of the rotor magnet holder 9.

As shown in fig. 5 to 6, the circuit board 1 and the bearing holding member 2 are integrally formed as a combined member; as shown in fig. 7, the stator assembly is mounted on the outer periphery of the bearing holding member 2. By integrally molding the circuit board 1 and the bearing holding member 2, the process of assembling the circuit board 1 to the bearing holding member 2 is reduced when assembling the motor, the assembly time of the product is shortened, and the assembly efficiency is improved.

In the utility model, the stator component and the integrally formed combined part are injection molded together, and the fixed part is integrated through injection molding, so that the waterproof property of the motor is improved, and the conditions of chip generation, structural eccentricity and the like in the pressing process are avoided.

The stator assembly is positioned on the inner side of the rotor magnet 6, and the output power of the motor can be improved under the same size.

The end of the shaft 5 is provided with threads 10, and the threads 10 are arranged to facilitate the installation of fan blades and other components. The shaft 5 is provided with a bolt 11, and the bolt 11 is used for axially positioning the fan blades.

Further, the bearing holding member 2 is provided with a first bearing 7 at an end close to the screw 10 and a second bearing 8 at an end far from the screw 10. The first bearing 7 and the second bearing 8 are mounted in the bearing holding member 2, and are located at both ends of the bearing holding member 2, respectively. The first bearing 7 is larger in size than the second bearing 8, so that the bearing on the output side is larger in size, and the rotational stability of the motor under high load is ensured.

The assembly process of the motor comprises the following steps: the combined part (shown in fig. 5-6) formed by the circuit board 1 and the bearing holding part 2 is formed by a forming process carried out after the stator assembly is put into an injection mold, and the structure of the combined part and the stator assembly after the integrated forming of the injection mold is shown in fig. 7; the integrally formed structure is pressed into the assembled shaft 5+ bolt 11+ first bearing 7 assembly, and then the wave washer, second bearing 8, rotor assembly are pressed in sequence, resulting in a motor as described in fig. 1-2.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments is modified or some or all of the technical features are replaced equivalently, so that the essence of the corresponding technical scheme does not deviate from the scope of the technical scheme of the embodiments of the present utility model.

Claims

1. An electric machine, comprising: stator module, rotor module, circuit board (1) and bearing hold part (2), its characterized in that:

the stator assembly has a stator core (3), a coil (4), and the rotor assembly has a shaft (5), a rotor magnet (6) and a rotor magnet holder (9);

the circuit board (1) and the bearing holding component (2) are integrally formed;

the stator assembly is mounted on the outer periphery of the bearing holding member (2).

2. The electric machine of claim 1 wherein the stator assembly is injection molded with the integrally formed composite part.

3. An electric machine according to claim 1, characterized in that the stator assembly is located inside the rotor magnet (6).

4. An electric machine according to claim 1, characterized in that the end of the shaft (5) is provided with threads (10).

5. An electric machine according to claim 4, characterized in that the bearing holding part (2) is provided with a first bearing (7) at the end close to the screw thread (10) and with a second bearing (8) at the end remote from the screw thread (10).

6. An electric machine according to claim 5, characterized in that the first bearing (7) has a larger size than the second bearing (8).

7. An electric machine according to claim 1, characterized in that a bolt (11) is provided on the shaft (5).