JPH077877A - Motor - Google Patents

Abstract

PURPOSE:To use the directly cut two end parts of the laminated core of a motor as their spigot-joint parts, by dividing the laminated core every pole tooth along its circumference into a plurality of pole tooth parts, and by rolling windings respectively around the pole tooth parts, and further, by combining the pole tooth parts cylindrically with each other to form the stator. CONSTITUTION:A laminated core is divided radially for individual pole teeth. The divisions of the core, fitted with windings, are combined to form a stator 12 in the form of a cylinder. Even when some parts of the core lose their plate thicknesses by their cutting and they are split finely, only the finely split parts can be removed from the cut parts of the core. Therefore, the cut parts of the core can keep their accuracies as the spigot-joint parts for joining the core and brackets A13, A11 respectively. Thereby, without the provisions of end plates for the core of the motor, the number of the parts of the motor and the working manhour of the motor can be reduced, and the motor having a small size, a lower price and a good mass-productivity can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor stator structure.

[0002]

2. Description of the Related Art Motors used to drive various machines are
End plates are attached to both ends of the laminated core and the end plates are cut to provide spigots in order to improve the assembly accuracy during assembly.

A conventional motor will be described below. FIG. 3 shows the configuration of a conventional motor. In FIG. 3, 31 is a bracket B, 32 is a stator, 33 is a bracket A, and 34 is a rotor.

FIG. 4 is a cross-sectional view of a conventional motor stator. 41 is an end plate, 42 is a laminated core, and 43 is an end plate.
Since the end portion of the laminated core 42 is a single thin core, even if an inlay is provided by cutting, the plate thickness of a part of the core becomes thin due to the cutting, and it becomes difficult to maintain the accuracy of the inlay. Therefore, as shown in FIG. 4 (b), the stator has 41,4 on both ends of the laminated core of 42.
The end plate of No. 3 is attached, and the end plate is cut to provide a spigot.

[0005]

However, the above configuration has a problem that the number of parts is large and the number of working steps is also large, so that the cost is high and the mass production is not suitable.

The present invention solves the above-mentioned conventional problems, and provides a motor in which both ends of a laminated core of a stator used for a motor are directly cut and made into spigots to reduce the number of parts and work steps. The purpose is to do.

[0007]

In order to achieve this object, a motor of the present invention has a laminated iron core divided circumferentially for each pole tooth and a winding wound around the pole tooth portion of the laminated iron core. In addition, a stator having a predetermined number of wound laminated iron cores coupled to each other in a cylindrical shape is provided, and a spigot portion obtained by cutting both end surface portions of the stator and a bracket are coupled and mounted.

[0008]

With this configuration, the end plates of the end faces of the laminated iron core and the man-hours for mounting the end plates, which have been conventionally required, are unnecessary, and therefore, the number of parts used for the motor and the man-hours can be reduced, and the size and size can be reduced. A motor with good mass productivity can be obtained at a price.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 11 is a bracket B, 12
Is a stator, 13 is a bracket A, and 14 is a rotor.

The motor configured as described above will be described with reference to FIG. The stator 12 of the motor is a laminated core in which a winding (not shown) is wound around a laminated iron core divided into pole teeth in the circumferential direction, and a predetermined number of the wound laminated iron cores are combined into a cylindrical shape. Therefore, even if a part of the core becomes thick and thin due to cutting (for example, the shaded portion in FIG. 2A), only that portion can be removed, and the brackets A13 and B11 The accuracy can be maintained as a spigot part for joining.

[0012]

As described above, according to the present invention, it is possible to realize a motor which is small in size, low in price and good in mass productivity by reducing the number of parts of the motor and the number of working steps without providing the end plate of the motor core. .

[Brief description of drawings]

FIG. 1 is a sectional view of a motor according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a motor stator according to an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional motor

FIG. 4 is a sectional view of a conventional motor stator.

[Explanation of symbols]

 11,31 Bracket B 12,32 Stator 13,33 Bracket A 14,34 Rotor 41,43 End plate 42 Laminated core

Claims (1)

[Claims] 1. A laminated core provided with a laminated iron core divided circumferentially for each pole tooth and a winding wound around a pole tooth portion of the laminated iron core, and a cylindrical laminated iron core having a predetermined number of the windings. A motor having a stator connected to the bracket, and a bracket and a spigot part formed by cutting both end surfaces of the stator.