JPH08149733A - Stator core terminal connector for motor - Google Patents

Abstract

PURPOSE: To make compact while facilitating the shaping of a coil end by molding the surface of a stator core of a high insulating material and then integrating a part of the stator core with a printed wiring. CONSTITUTION: The surface of a stator core is integrally molded of such molding material as allowing high insulating printed wiring or glass epoxy resin and then a part of the stator core is integrated with a plurality of printed wirings. Subsequently, a stator winding 4 is inserted into the stator core and the end of winding at a power supply connecting part is passed through each of a plurality of holes or grooves (a) provided previously in order to ensure the insulation distance between the conducting part and nonconducting part of power supply connection terminal and then the end of the wire is connected with the printed board, on one side (b) thereof, by soldering or welding. The printed board is connected, on the other side (c) thereof, with a commercially available terminal or a lead wire for the power supply thus facilitating the shaping of the coil end (d). Consequently, shaping at the coil end of the stator winding is facilitated and the size and weight can be reduced while ensuring the insulation distance between the conducting part and the nonconducting part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator core terminal connecting device for an electric motor.

[0002]

2. Description of the Related Art Conventionally, an insulating film or the like is used to insulate a stator winding of an electric motor, and the tip of a power supply connecting cord is wound around a stator core around a core wire from which insulation coating has been peeled off. Since the tip of the wire is wound and connected by soldering or welding, the soldering or welding part is covered with an insulating tube, etc. and fixed on the stator winding and pulled out as a power connection cord, so the number of these connecting work steps is automated. It was difficult and costly.

Furthermore, since an insulating tube, a power supply connecting cord and the like are tied around the outer circumference of the stator winding, it has been difficult to reduce the size and weight of the electric motor.

[0004]

Even in a small electric motor, the insulation distance between the conductive part and the non-charged part is regulated by the applied voltage. Therefore, in order to reduce the size and automate the non-charged part, the non-charged part is made of an insulator. It was necessary to omit many steps such as covering with a wire, connecting with the conventional coil end from the temporary shaping, binding the thread, performing the main shaping, connecting the lead wire, covering the connecting part with an insulating tube, etc.

The object of the present invention is to mold the stator core surface with a molding material having a high insulation property, and then integrate the printed wiring into a part of the stator core to finish winding the stator winding around the stator core. Insert each winding end into a hole or groove formed by molding to secure a specified space distance, connect the wire end with solder or welding, and connect the other end to a power source for terminals, lead wires, etc. By connecting to the coil end, the shaping process of the coil end can be facilitated and the size can be made compact. Furthermore, by omitting the work of insulating the winding wire and the lead wire, the size can be reduced and the establishment of safety and the number of work steps can be reduced. The purpose is to enable automation and reduce costs.

[0006]

[Means for Solving the Problems] Miniaturization and weight reduction of a small electric motor, establishment of an insulation distance between a conductive portion and a non-charged portion of a stator winding, and further insulation work of a stator winding and a lead wire for automation. In order to omit as much as possible, after molding the surface of the stator core with a highly insulative molding material, a part of the stator core is integrated with the printed wiring and the stator winding is wound around the stator core. Insert the end into a hole or groove formed by molding to secure a specified space distance, connect the wire end with solder or welding, and connect the other end with a terminal or lead wire for power supply. In addition to being compact and lightweight, automation is possible by establishing safety and reducing the number of work steps.

[0007]

[Operation] Miniaturization of compact electric motor, establishment of insulation distance between the conductive and non-charged parts of the stator winding, and molding of a highly insulating molding material on the surface of the stator core to form part of the stator core. The integrated printed wiring facilitates the work without covering the lead wires with an insulating tube, reducing the size and weight and reducing the cost.

[0008]

Embodiments of the present invention will be described with reference to the drawings.

In order to further reduce the size and weight of the small electric motor and to automate the present invention, the present invention forms a part of the stator core with a printed wiring after molding the surface of the stator core with a highly insulating molding material. To do.

FIG. 1 is an integral molding of the surface of a stator core 1 for the purpose of insulating the stator windings of the electric motor of the present invention with a molding material 2 made of a material having high insulation properties and capable of printed wiring, glass epoxy resin, or the like. After that, a plurality of printed wirings 3 (with copper terminals attached) are integrated with a part of the stator core.
In FIG. 2, the stator winding 4 is inserted into the stator core, and the winding ends of the power source connecting portion of the stator winding are preliminarily provided with the insulating distances between the conductive portion and the non-charging portion of the plurality of power source connecting terminals. The wire ends are respectively passed through the holes or the grooves a provided to ensure the connection, and the wire ends are connected to one side b of the printed wiring by soldering or welding. By connecting a commercially available terminal or lead wire for the power source to the other side c, the coil end d can be easily shaped and made compact,
In addition, the work of insulating the winding wire and the lead wire can be omitted, which makes it possible to reduce the size of the product and establish automation for safety and to reduce the number of work steps.

[0011]

According to the present invention, (1) the coil end of the stator winding can be easily shaped, and the size and weight can be reduced while ensuring the insulation distance between the conductive portion and the non-charged portion. (2) The number of steps such as the work of connecting the stator winding and the lead wire and the step of covering the connecting portion with an insulating tube can be omitted, which facilitates automation and reduces cost. (3) The safety can be achieved by passing the stator winding through the holes or grooves provided to secure the insulation distance at the winding end of the power supply connection portion.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a terminal connecting device for a stator core of an electric motor according to the present invention.

FIG. 2 is an explanatory view of a main part of a terminal connecting device for a stator core of an electric motor according to the present invention.

FIG. 3 is a sectional view of an essential part of a terminal connecting device for a stator core of an electric motor according to the present invention.

FIG. 4 is a partial cross-sectional view of a terminal connecting device for a stator core of an electric motor according to the present invention.

[Explanation of symbols]

1 ... Stator core, 2 ... Mold material, 3 ... Printed wiring,
4 ... Stator winding, 5 ... End bracket, 6 ... Rotor,
7 ... Shaft, 8 ... Ball bearing.

Claims (1)

[Claims] 1. In order to insulate a stator winding of an electric motor, when molded on a surface of a stator core with a molding material, it is integrally made of phenol resin or glass epoxy resin, which is a material having high insulation and capable of printed wiring. The printed wiring, that is, the copper foil of the terminal is attached in the vicinity of the stator winding on a part of the surface of the molded stator core that is molded. Next, wind one end of each of the pasted terminals around the stator core into the hole or groove formed by molding to secure the specified space distance, and solder or weld the wire end. And connect to the other side for power supply, such as terminals and lead wires. That is, the insulation of the stator winding and the terminal treatment of the stator winding are integrated with the printed wiring, and the wire end of each winding drawn out from the stator winding has a specified spatial distance. A stator core terminal connecting device for an electric motor, characterized in that a hole or groove formed by molding is provided on the surface of the stator core in order to secure the above.