CN215990390U

CN215990390U - DC motor structure

Info

Publication number: CN215990390U
Application number: CN202122078962.7U
Authority: CN
Inventors: 陈雪江
Original assignee: Zhejiang Chuanghong Intelligent Technology Co ltd
Current assignee: Zhejiang Chuanghong Intelligent Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-08
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a direct current motor structure, comprising: the rotor core is positioned in the stator, a front cover and a rear cover are respectively arranged on the front end surface and the rear end surface of the metal casing, the rotor core is fixed on the outer side surface of a rotor shaft, and two ends of the rotor shaft are respectively connected with the front cover and the rear cover through a front bearing and a rear bearing; at least 1 buckling point which is contacted with the winding iron core of the stator is arranged on the metal casing, so that the inner surface of the metal casing is contacted with the winding iron core of the stator. The direct current motor structure of the utility model not only reduces noise, but also avoids the stator from rotating around the iron core to the rotor iron core, and ensures the stability of the torque force of the motor.

Description

DC motor structure

Technical Field

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

Background

The structure of the direct current motor is composed of a stator and a rotor, wherein the stationary part of the direct current motor is called the stator when the direct current motor operates, the stator mainly functions to generate a magnetic field, the rotating part of the direct current motor is called the rotor when the direct current motor operates, the main functions of the rotor are to generate electromagnetic torque and induced electromotive force, and the rotor is a pivot for energy conversion of the direct current motor, so the rotor is also called an armature. Direct current motors are widely used due to their good speed regulation performance, but there is still room for improvement in existing direct current motors.

Disclosure of Invention

The utility model aims to provide a direct current motor structure which not only reduces noise, but also avoids the stator from rotating around an iron core to a rotor iron core, and ensures the stability of the torque force of the motor.

In order to achieve the purpose, the utility model adopts the technical scheme that: a direct current motor structure comprising: the rotor core is positioned in the stator, a front cover and a rear cover are respectively arranged on the front end surface and the rear end surface of the metal casing, the rotor core is fixed on the outer side surface of a rotor shaft, and two ends of the rotor shaft are respectively connected with the front cover and the rear cover through a front bearing and a rear bearing; at least 1 buckling point which is contacted with the winding iron core of the stator is arranged on the metal casing, so that the inner surface of the metal casing is contacted with the winding iron core of the stator.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the number of the detaining points is at least 2.

2. In the above scheme, the number of the buckling points is 4, and the buckling points are arranged in 2 rows in the circumferential direction.

3. In the above scheme, the diameter ratio of the length of the metal casing to the front cover and the rear cover is 1: 0.9 to 1.1.

4. In the above scheme, the metal casing is a copper casing or an aluminum casing.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the direct current motor structure, two ends of the rotor shaft are respectively connected with the front cover and the rear cover through the front bearing and the rear bearing, and at least 1 buckling point in contact with the winding iron core is arranged on one side of the circumferential direction of the metal casing, so that the inner surface of the metal casing is in contact with the winding iron core, the motor can be prevented from easily jumping during working, noise is reduced, the stator is prevented from rotating around the iron core to the rotor iron core, and the stability of torque force of the motor is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the internal structure of the DC motor structure of the present invention;

fig. 2 is an external structural view of the structure of the dc motor of the present invention.

In the above drawings: 1. a metal housing; 2. a stator; 3. a rotor core; 4. a front cover; 5. a rear cover; 6. a rotor shaft; 7. a front bearing; 8. a rear bearing; 9. and (6) buckling points.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1: a direct current motor structure comprising: the motor comprises a metal case 1, a stator 2 and a rotor core 3 which are positioned in the metal case 1, wherein the rotor core 3 is positioned in the stator 2, the front end surface and the rear end surface of the metal case 1 are respectively provided with a front cover 4 and a rear cover 5, the rotor core 3 is fixed on the outer side surface of a rotor shaft 6, and two ends of the rotor shaft 6 are respectively connected with the front cover 4 and the rear cover 5 through a front bearing 7 and a rear bearing 8; at least 1 buckling point 9 which is contacted with the winding core of the stator 2 is arranged on the metal casing 1, so that the inner surface of the metal casing 1 is contacted with the winding core of the stator 2.

The number of the buckling points 9 is 4, and the buckling points are arranged in 2 rows in the circumferential direction.

The diameter ratio of the length of the metal casing 1 to the front cover 4 and the rear cover 5 is 1: 1.

the metal casing 1 is an aluminum casing.

Example 2: a direct current motor structure comprising: the motor comprises a metal case 1, a stator 2 and a rotor core 3 which are positioned in the metal case 1, wherein the rotor core 3 is positioned in the stator 2, the front end surface and the rear end surface of the metal case 1 are respectively provided with a front cover 4 and a rear cover 5, the rotor core 3 is fixed on the outer side surface of a rotor shaft 6, and two ends of the rotor shaft 6 are respectively connected with the front cover 4 and the rear cover 5 through a front bearing 7 and a rear bearing 8; at least 1 buckling point 9 which is contacted with the winding core of the stator 2 is arranged on the metal casing 1, so that the inner surface of the metal casing 1 is contacted with the winding core of the stator 2.

The number of the above-mentioned pinch points 9 is at least 2.

The diameter ratio of the length of the metal casing 1 to the front cover 4 and the rear cover 5 is 1: 1.05.

the metal casing 1 is a copper casing.

When the direct current motor structure is adopted, two ends of a rotor shaft of the direct current motor structure are respectively connected with the front cover and the rear cover through the front bearing and the rear bearing, and at least 1 buckling point in contact with the winding iron core is arranged on one side of the metal casing in the circumferential direction, so that the inner surface of the metal casing is in contact with the winding iron core, the motor can be prevented from easily jumping in work, noise is reduced, the stator is prevented from rotating around the iron core to the rotor iron core, and the stability of torque force of the motor is ensured.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A direct current motor structure is characterized in that: the method comprises the following steps: the motor comprises a metal casing (1), a stator (2) and a rotor core (3), wherein the stator (2) and the rotor core (3) are positioned in the metal casing (1), the rotor core (3) is positioned in the stator (2), the front end face and the rear end face of the metal casing (1) are respectively provided with a front cover (4) and a rear cover (5), the rotor core (3) is fixed on the outer side surface of a rotor shaft (6), and two ends of the rotor shaft (6) are respectively connected with the front cover (4) and the rear cover (5) through a front bearing (7) and a rear bearing (8); at least 1 buckling point (9) in contact with the winding iron core of the stator (2) is arranged on the metal casing (1), so that the inner surface of the metal casing (1) is in contact with the winding iron core of the stator (2).

2. The direct current motor structure according to claim 1, characterized in that: the number of the buckling points (9) is at least 2.

3. The direct current motor structure according to claim 1, characterized in that: the number of the buckling points (9) is 4, and the buckling points are arranged in 2 rows in the circumferential direction.

4. The direct current motor structure according to claim 1, characterized in that: the diameter ratio of the length of the metal casing (1) to the front cover (4) and the rear cover (5) is 1: 0.9 to 1.1.

5. The direct current motor structure according to claim 1, characterized in that: the metal casing (1) is a copper casing or an aluminum casing.