CN210898881U

CN210898881U - Compact stepping motor

Info

Publication number: CN210898881U
Application number: CN201922484332.2U
Authority: CN
Inventors: 葛剑优; 祝振卿
Original assignee: Fuyikai Group Co ltd
Current assignee: Fuyikai Group Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-06-30
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a compact step motor mainly comprises the stator and installs the rotor inside the stator, the stator is installed in a motor housing, the stator comprises a plurality of stator magnetic poles of fixed mounting at the motor housing inner wall, the stator magnetic pole comprises a stator core and the solenoid of coiling on stator core, stator core and motor housing inside wall fixed connection, the rotor comprises a plurality of permanent magnets of fixing on a motor spindle, a plurality of stator core evenly set up along the rotor periphery, and its head end is towards the central axis of rotor. The compact stepping motor adopting the technical scheme has higher integration level and more compact structure, and can be used in a plurality of occasions to meet market demands by closed-loop control of the stepping motor.

Description

Compact stepping motor

Technical Field

The utility model relates to a motor, in particular to compact step motor.

Background

The development of the stepping motor industry is gradually developed from the traditional common stepping motor to a closed-loop stepping motor added with an encoder, and the speed and the precision are greatly improved. The existing closed-loop control structure scheme of the stepping motor is divided into a split type and an integrated type, wherein the split type means that a drive plate and a control plate are separated from the motor, and the motor is only provided with an encoder and an encoder circuit board; the integration is to install the encoder function, the driving function and the control function on the motor.

However, the integrated closed-loop control stepping motor on the market at present is huge and not compact enough in structure, and cannot be used due to narrow installation space in many occasions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compact step motor.

According to the utility model discloses an aspect provides a compact step motor, mainly constitute by the stator and install the rotor inside the stator, the stator is installed in a motor housing, the stator comprises a plurality of stator magnetic poles of fixed mounting at the motor housing inner wall, the stator magnetic pole comprises a stator core and the solenoid of coiling on stator core, stator core and motor housing inside wall fixed connection, the rotor comprises a plurality of permanent magnets of fixing on a motor spindle, a plurality of stator core evenly set up along the rotor periphery, and its head end is towards the central axis of rotor.

The compact stepping motor adopting the technical scheme has higher integration level and more compact structure, and can be used in a plurality of occasions to meet market demands by closed-loop control of the stepping motor.

Further, the installation surface of the stator is perpendicular to the main shaft of the motor.

Further, the mounting surfaces of the permanent magnets correspond to the mounting surfaces of the stator poles.

Preferably, a plurality of mutually parallel rotors are arranged on the motor spindle, and a plurality of stators corresponding to the rotors are arranged on the inner wall of the motor housing.

Specifically, the plane of the stator corresponds to the plane of the rotor and coincides with the plane of the rotor.

Furthermore, one end of the motor main shaft is fixedly connected with an impeller, and the motor main shaft drives the impeller to rotate when rotating. The impeller rotates to generate air flow, so that the ventilation condition in the motor can be improved, the heat dissipation of the motor is enhanced, and the service life of the motor can be effectively prolonged.

Furthermore, the impeller is arranged on the outer side of the rotor, a guide plate is further arranged between the impeller and the rotor, a plurality of guide holes are formed in the guide plate, and the guide holes correspond to the positions of the stator magnetic poles. The guide holes on the guide plate can guide the airflow generated by the impeller to the electromagnetic coil wound on the stator core, so that the heat generated by the electromagnetic coil can be taken away in time.

Furthermore, an air inlet plate is arranged at one end, close to the impeller, of the motor housing, a sealing plate is arranged at one end, far away from the impeller, of the motor housing, the motor spindle is connected with the sealing plate through a bearing, and the air inlet plate and the sealing plate close the motor housing through two ends. The air inlet plate can be used for coarsely filtering air sucked by the impeller, and prevents larger impurities from entering the motor to damage the motor.

Furthermore, a mounting plate for mounting the permanent magnet is fixed on the motor spindle, and the permanent magnet is fixedly connected with the mounting plate through a mounting piece. Therefore, the permanent magnet is more convenient to install and is more firmly connected with the motor spindle.

Preferably, the permanent magnets are fixedly connected with the mounting plate in pairs, and the magnetic pole directions of the two permanent magnets are opposite. Therefore, the magnetic force of the stator magnetic poles can be fully utilized, and the working efficiency of the motor is further improved.

Drawings

Fig. 1 is a schematic front structural view of a compact stepping motor according to an embodiment of the present invention.

Fig. 2 is a back view of the compact stepping motor shown in fig. 1.

Fig. 3 is an assembly view of the compact stepping motor shown in fig. 1.

Fig. 4 is a schematic cross-sectional view of the compact stepping motor shown in fig. 1.

Fig. 5 is a schematic longitudinal sectional view of the compact stepping motor shown in fig. 1.

Fig. 6 is a schematic view of an installation structure of the permanent magnet shown in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 5 schematically show a compact stepping motor according to an embodiment of the present invention.

As shown in the figure, the device mainly comprises a stator 1 and a rotor 2 installed inside the stator 1.

The stator 1 is mounted in a motor housing 4.

The stator 1 is composed of a plurality of stator magnetic poles fixedly arranged on the inner wall of the motor housing 4.

The stator magnetic pole is composed of a stator core and an electromagnetic coil wound on the stator core.

The stator core is fixedly connected with the inner side wall of the motor housing 4.

The rotor 2 is formed by a number of permanent magnets 21 fixed to a motor spindle 3.

A plurality of stator cores are evenly arranged along the periphery of the rotor, and the head ends of the stator cores face the central axis of the rotor 2.

In other embodiments, the plurality of stator cores may also be designed as one piece.

In the present embodiment, the mounting surface of the stator 1 is perpendicular to the motor spindle 3.

The mounting surface of the permanent magnet 21 corresponds to the mounting surface of the stator pole.

In this embodiment, two rotors 2 parallel to each other are disposed on the motor spindle 3, and a plurality of stators 1 corresponding to the rotors 2 are disposed on the inner wall of the motor housing 4.

The plane of the stator 1 and the plane of the rotor 2 correspond to each other and coincide with each other.

One end of the motor spindle 3 is also fixedly connected with an impeller 6.

When the motor spindle 3 rotates, the impeller 6 is driven to rotate. The impeller 6 rotates to generate air flow, so that the ventilation condition in the motor can be improved, the heat dissipation of the motor is enhanced, and the service life of the motor can be effectively prolonged.

The impeller 6 is arranged on the outer side of the rotor 2, and a guide plate 8 is arranged between the impeller 6 and the rotor 2.

The guide plate 8 is provided with a plurality of guide holes 81.

The guide holes 81 correspond to the positions of the stator poles.

The guide holes 81 on the guide plate 8 can guide the airflow generated by the impeller 6 to the electromagnetic coil wound on the stator core, so that the heat generated by the electromagnetic coil can be taken away in time.

An air inlet plate 7 is arranged at one end of the motor housing 4 close to the impeller 6, and a sealing plate 5 is arranged at one end far away from the impeller 6.

The motor shaft 3 is connected to the closing plate 5 by a bearing 9.

The air inlet plate 7 and the closing plate 9 close the motor housing 4 by two ends. The air inlet plate 7 can be used for coarse filtering of air sucked by the impeller 6, and large impurities are prevented from entering the motor to damage the motor.

As shown in fig. 6, a mounting plate 23 for mounting the permanent magnet 21 is fixed to the motor spindle 3.

The permanent magnet 21 is fixedly connected to the mounting plate 23 by means of a mounting 22. Therefore, the permanent magnet 21 is more convenient to install and is more firmly connected with the motor spindle 3.

In the present embodiment, the permanent magnets 21 are fixedly connected in pairs with the mounting plate 23, and the magnetic poles of the two permanent magnets 21 are opposite in direction. Therefore, the magnetic force of the stator magnetic poles can be fully utilized, and the working efficiency of the motor is further improved.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a compact step motor, its characterized in that mainly by the stator and install the inside rotor of stator constitutes, the stator is installed in a motor housing, the stator is by fixed mounting a plurality of stator magnetic poles of motor housing inner wall constitute, the stator magnetic pole is in by a stator core and coiling solenoid on the stator core constitutes, stator core with motor housing inside wall fixed connection, the rotor comprises fixing a plurality of permanent magnets on a motor spindle, and is a plurality of stator core follows the rotor periphery evenly sets up, and its head end orientation the central axis of rotor.

2. The compact stepper motor of claim 1, wherein the mounting surface of the stator is perpendicular to the motor spindle.

3. The compact stepper motor of claim 2, wherein the mounting faces of the permanent magnets correspond to the mounting faces of the stator poles.

4. The compact stepping motor of claim 1 wherein said motor shaft has a plurality of said rotors disposed in parallel, and said motor housing has a plurality of stators disposed on an inner wall thereof in correspondence with said rotors.

5. The compact stepper motor of claim 4, wherein the plane of the stator corresponds to and coincides with the plane of the rotor.

6. The compact stepper motor of claim 1, wherein an impeller is further fixedly attached to one end of the motor shaft, and rotation of the motor shaft drives the impeller to rotate.

7. The compact stepping motor of claim 6 wherein said impeller is disposed outside said rotor, and a baffle plate is disposed between said impeller and said rotor, said baffle plate having a plurality of baffle holes, said baffle holes corresponding to the positions of said stator poles.

8. The compact stepper motor of claim 7, wherein the motor housing has an inlet plate at an end thereof adjacent to the impeller and a sealing plate at an end thereof remote from the impeller, the motor shaft being connected to the sealing plate by a bearing, the inlet plate and the sealing plate closing the motor housing at opposite ends.

9. The compact stepping motor of claim 1 wherein a mounting plate is affixed to said motor shaft for mounting said permanent magnet, said permanent magnet being fixedly attached to said mounting plate by a mounting member.

10. The compact stepper motor of claim 9, wherein the permanent magnets are fixedly connected in pairs with a mounting plate, and the magnetic poles of the two permanent magnets are in opposite directions.