Small motor stator shell and manufacturing method thereof

Abstract

The invention discloses a small motor stator shell and a manufacturing method thereof, the small motor stator shell comprises a shell, a front cover and a rear cover, the shell is in a hollow square column shape, a cylindrical stator iron core is arranged in the shell, the cylindrical stator iron core and the shell are of an integrated structure, and the cylindrical stator iron core is integrally formed by 3% silicon steel through a sintering process; a plurality of stator windings are mounted on the inner surface of the cylindrical stator iron core; the front end of the shell is provided with a front cover, and the front cover is provided with an output shaft hole for the output shaft of the rotor to extend out; a leading-out wire is arranged at the rear end of the shell, and a rear cover is installed after the rotor is inserted into the inner side of the cylindrical stator iron core. According to the invention, the number of parts can be reduced, the motor assembling process is reduced, the production cost is reduced, and further miniaturization of the motor can be realized; in addition, the device has the advantages of water resistance and dust resistance.

Description

Technical Field

[0001] The invention relates to a motor, and in particular to a small motor stator housing and a manufacturing method thereof. Background Art

[0002] like Figure 1 As shown, the existing motor stator housing includes an aluminum shell 1, which is in the shape of a hollow square column, and a cylindrical stator core 2 is inserted inside. The front end of the shell 1 is connected to an aluminum front cover 3, and the front cover 3 has an output shaft hole 3a for the output shaft of the rotor to extend out. After the rotor is inserted into the cylindrical stator core 2, the rear cover (not shown in the figure) is installed. The existing technical problem is that the shell 1 and the cylindrical stator core 2 are set separately, which increases the number of parts, increases the assembly process, and also increases the production cost. In addition, when the cylindrical stator core 2 is inserted into the shell 1, there will inevitably be a gap between the two, which affects the further miniaturization of the motor. Summary of the invention

[0003] Purpose of the invention: The first purpose of the present invention is to provide a small motor stator housing with a small number of parts, few assembly steps and low production cost; the second purpose of the present invention is to provide a method for manufacturing the small motor stator housing.

[0004] Technical solution: The small motor stator housing described in the present invention includes a shell, a front cover and a rear cover. The front cover and the rear cover are respectively arranged at the two ends of the shell. The front cover has an output shaft hole for the output shaft of the rotor to extend out. It is characterized in that the shell and the cylindrical stator core inside it are an integrated structure.

[0005] The manufacturing method of the small motor stator shell of the present invention comprises: the shell and the cylindrical stator core are integrally formed from 3% silicon steel through a sintering process.

[0006] As an optional solution, the small motor stator housing described in the present invention includes a shell, a front cover and a rear cover. The front cover and the rear cover are respectively arranged at both ends of the shell. The front cover has an output shaft hole for the output shaft of the rotor to extend out. The front cover, the shell and the cylindrical stator core inside it are an integrated structure.

[0007] The manufacturing method of the small motor stator shell of the present invention comprises: the shell, the cylindrical stator core and the front cover are integrally formed from 3% silicon steel through a sintering process.

[0008] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the housing and the cylindrical stator core are designed as an integrated structure and the structural integration is achieved through 3% silicon steel, which can reduce the number of parts, reduce the motor assembly process, and reduce production costs. There is no gap between the housing and the cylindrical stator core, which helps to further reduce the overall size of the motor, and can also achieve waterproof and dustproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of an existing motor stator housing;

[0010] Figure 2 is a schematic structural diagram of a motor stator housing provided in Embodiment 1 of the present invention;

[0011] Figure 3 is a schematic structural diagram of a motor stator housing provided in Embodiment 2 of the present invention; DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Attached Figures 1 to 3 The reference numerals in the figures are as follows:

[0014] 1, housing; 2, cylindrical stator core; 3, front cover; 3a, output shaft hole; 1a, lead wire.

[0015] Example 1

[0016] like Figure 2 As shown, embodiment 1 provides a small motor stator housing, including a housing 1, a front cover 3 and a rear cover. The housing 1 is in the shape of a hollow square column, and a cylindrical stator core 2 is arranged inside. The cylindrical stator core 2 is an integral structure with the housing 1. A plurality of stator windings (not shown in the figure) are installed on the inner surface of the cylindrical stator core 2, and an aluminum front cover 3 is installed at the front end of the housing 1. The front cover 3 is provided with an output shaft hole 3a for the output shaft of the rotor to extend. In addition, a lead wire 1a is provided at the rear end of the housing 1, and the lead wire 1a is a stator winding lead wire. After the rotor is inserted into the inner side of the cylindrical stator core 2, the rear cover (not shown in the figure) is installed. For the rotor, for example, a rotor in which an air-core coil formed by concentrated winding in advance is installed on an insulating wire tube, a rotor structure in which the wire is wound on the magnetic poles of the rotor core, etc. can be adopted.

[0017] The method for manufacturing the stator housing of a small motor according to Embodiment 1 comprises:

[0018] The housing 1 and the cylindrical stator core 2 are integrally formed from 3% silicon steel (i.e. silicon steel with a silicon content of 3%, and only silicon steel with a silicon content of 3% can achieve an integrated process) through a sintering process.

[0019] Example 2

[0020] like Figure 3 As shown, this embodiment 2 is basically the same as embodiment 1, except that:

[0021] In the first embodiment, the front cover 3 is separately provided from the housing 1 and the cylindrical stator core 2, while in the second embodiment, the housing 1, the cylindrical stator core 2 and the front cover 3 are an integrated structure.

[0022] The method for manufacturing the stator housing of a small motor according to Embodiment 2 comprises:

[0023] The housing 1, the cylindrical stator core 2 and the front cover 3 are integrally formed from 3% silicon steel through a sintering process.

Claims

1. A small motor stator housing, comprising a housing (1), a front cover (3) and a rear cover, wherein the front cover (3) and the rear cover are respectively arranged at two ends of the housing (1), the front cover (3) having an output shaft hole (3a) for the output shaft of the rotor to extend out, characterized in that: The housing (1) and the cylindrical stator core (2) therein are an integrated structure.

2. The small motor stator housing according to claim 1, characterized in that: The front cover (3) is an aluminum front cover.

3. The small motor stator housing according to claim 1, characterized in that: The shell (1) is in the shape of a hollow square column.

4. The small motor stator housing according to claim 1, characterized in that: The rotor adopts a rotor structure in which an air-core coil formed by concentrated winding in advance is mounted on an insulating bobbin, or a rotor structure in which the coil is wound around the magnetic poles of a rotor core.

5. The method for manufacturing a stator housing of a small motor according to any one of claims 1 to 4, characterized in that: include: The housing (1) and the cylindrical stator core (2) are integrally formed from 3% silicon steel through a sintering process.

6. A small motor stator housing, comprising a housing (1), a front cover (3) and a rear cover, wherein the front cover (3) and the rear cover are respectively arranged at two ends of the housing (1), the front cover (3) having an output shaft hole (3a) for the output shaft of the rotor to extend out, characterized in that: The front cover (3), the housing (1) and the cylindrical stator core (2) therein are an integrated structure.

7. The small motor stator housing according to claim 6, characterized in that: The shell (1) is in the shape of a hollow square column.

8. The small motor stator housing according to claim 6, characterized in that: The rotor is a rotor in which an air-core coil formed by concentrated winding in advance is mounted on an insulating bobbin.

9. The small motor stator housing according to claim 6, characterized in that: The rotor adopts a rotor structure in which wires are wound around the magnetic poles of the rotor core.

10. The method for manufacturing a stator housing of a small motor according to any one of claims 6 to 9, characterized in that: include: The housing (1), the cylindrical stator core (2) and the front cover (3) are integrally formed from 3% silicon steel through a sintering process.

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