JPH01238441A - Stator of small-sized motor - Google Patents

Abstract

PURPOSE:To allow a motor size to be reduced by folding back a part connecting a lead wire of a stator winding with a lead wire of a motor on a stator and further folding back an insulating part on the connecting part. CONSTITUTION:A fixed part 6 of a connecting insulator 5 is bonded and fixed by pressing a bonding layer 6a thereof against the upper end surface of a stator winding 2. Then, a conductor of a lead wire 4 of a motor is passed through a hole of an eyelet terminal 8 of a connecting part 7 and the tip of a lead wire 4 is wound by a lead wire 3. The wound part is soldered to the eyelet terminal 8. Further, the connecting part 7 is folded back on the side of the fixed part 6. Lastly, an insulating part 9 is folded over the fixed part 6 and the connecting part 7 and bonded and fixed by a bonding layer 9a thereof. Accordingly, the process is simplified and the motor size can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a stator for a small electric motor used in ventilation fans, air conditioners, etc.

BACKGROUND OF THE INVENTION Conventional stators of this type have generally been constructed as shown in FIG. That is, the stator winding 22 is wound around the stator core 21, the stator winding 22 is fixedly pre-wound on the upper part outside the stator core 21, and the connection part between the lead wire 22a of the wire 22 and the motor lead wire 23 is installed. was established. This connection is made by connecting several lead wires 22a and motor lead wires 23 by soldering, etc., covering each part with an insulating tube 24 such as a varnish tube, and bundling these several insulating tubes 24 together. It was constructed by being fixed onto the stator winding 22 with a tying thread 25. In addition, FIG. 4 shows one lead line 22a1.
The arrangement state of the motor lead wire 23 and the insulating tube 24 is shown.

Problems that the invention aims to solve Such a conventional configuration has the following problems.

(1) It is necessary to insulate each solar wire 22a and motor lead wire 23 by covering them with an insulating tube 24, which requires a large number of processing steps.

(2) Stator winding 22 by bundling several insulating tubes 24
It is fixed with a binding thread 26 on the top, making it difficult to work.
It takes time and effort, and since the connecting part between the lead wire 22a and the motor lead wire 23 is located inside the insulating tube 24 near the center, there is a risk of the wire breaking if force is applied, and it cannot be fixed with the tying string 26. First, when both ends of the insulating tube 240 are tied together, the central part of the insulating tube 240 swells and becomes taller, and the entire stator becomes larger, resulting in a larger product size.

The present invention solves these problems by making it easier to connect and insulate the lead wires of the stator windings and the motor lead wires, and to reduce the height of the connected and insulated parts. The purpose of this is to reduce the size of the electric motor.

Means for Solving the Problem In order to solve this problem, the present invention includes a fixing part fixed onto the stator winding with an adhesive, and a bendable extension of the stator winding at one end of the fixing part. A connecting part having a relay terminal for connecting the wire lead wire and the motor lead wire, and an insulating part extending bendably to the other end of the fixed part are processed and formed from a single insulating film. This is a stator for a small motor equipped with a connecting insulator.

Function: With this configuration, the connection insulator is fixed by gluing the fixed part onto the stator winding with adhesive, and the output wire of the stator winding and the motor lead wire are connected by the relay terminal of the connection part. Then, the connecting portion is folded onto the fixed portion, and the insulating portion is further folded over the fixed portion to complete the connecting and insulating work.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3. 1 and 2, a connection insulator is provided on the upper part of the stator winding 2 wound around the stator core 1 to connect and insulate the lead wire 3 of the stator winding 2 and the motor lead wire 4. 6 is fixed.

The connection insulator 6 has a rectangular fixed part 6 with an adhesive layer 6a on the lower surface, one end of this fixed part 6 is bendably extended to the upper surface side, and the lead wire 3 and the electric [lead wire 4] are connected to each other. A connecting part 7 having an eyelet terminal 8 which is a relay terminal to be connected, and a fixing part e which is bendably extended to one end of the fixed part 6 next to the connecting part 7.
An insulating portion 9 with an adhesive layer 9a provided on the lower surface when folded sideways is formed by cutting a single insulating film.

Connection and insulation work between the lead wire 3 of the stator winding 2 of the stator and the motor lead wire 4 in the above configuration is performed as follows. First, the fixing portion 6 of the connecting insulator 6 is adhesively fixed by pressing its adhesive layer 6a against the upper end surface of the stator winding 2. 1 As shown in FIG. 3, pass the core part of the motor lead wire 4 through the hole of the eyelet terminal 8 of the connection part 7, wrap the lead wire 3 around its tip, and solder the connected part with the solder 10. Fix it to eyelet terminal 8 with. Then, the connecting portion 7 is folded over onto the fixed portion 6 side. Finally, the insulating part 9 is folded over the fixing part 6 and the connecting part 7, and the work is completed by adhesively fixing it with the adhesive layer 9a.

At this time, the fixed part 6 and the insulating part 9 do not come into close contact because the motor lead wire 4 is between them, but it is sufficient to apply a thick layer of adhesive, such as a two-component adhesive, to the adhesive layer 9a. Can be glued.

As described above, according to the embodiment, there is no need to cover each connection between the lead wire 3 of the stator winding 2 and the motor lead wire 4 with an insulating tube as in the conventional case, and therefore the insulating tubes can be bundled. There is no need to fix it, and the fixing part 6
The connection and insulation work is completed by simply bending the connecting part 7 on top and the insulating part on top of them, making the work easy and also making it possible to reduce the height of this connection and insulating part. , the stator as a whole is also low υ, so the motor can be downsized, and the individual connections are fixed with appropriate spacing, which improves insulation.

In the embodiment, the insulating part 9 is fixed with adhesive by providing an adhesive layer 9a, but if it is configured so that it is pressed by the inner surface of the motor housing and folded over on the fixed part 6 side,
There is no particular need to provide the adhesive layer 9a.

According to the present invention, as is clear from the explanation of the embodiments above, the effects of the invention are as follows.
Connecting the lead wires of the stator windings to the motor lead wires and insulating those parts is done by connecting the fixed part, the connecting part, and the insulating part to one part.
All you have to do is connect the connecting part of the connecting insulator made from a sheet of insulating film, sandwich this part between the fixing part and the insulating part, and then fold it over. This makes the work extremely easy, and all the processing of the stator can be completed. This processing man-hour, which accounts for a large proportion of the man-hour, can be reduced and manufacturing costs can be reduced. In addition, since this part is not fixed by overlapping insulating tubes as in the conventional case, it becomes lower, and the stator as a whole becomes lower, resulting in the effect that the motor can be made smaller.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a connection insulator of a stator of a small electric motor according to an embodiment of the present invention, FIG. 2 is a sectional view of the stator, FIG. 3 is a detailed view of the connection part of the stator, and FIG. The figure is a sectional view of a conventional stator. 2...Stator winding, 3...Lead wire,
4... Motor lead wire, 6... Connection insulator, 6... Fixed part, 7... Connection part,
8... C1-me terminal, 9-... Insulation section. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
・Meeting ν release r - identification 舒

Claims (1)

[Claims] A connection having a fixing part fixed to the stator winding with an adhesive, and a relay terminal bendably extending to one end of the fixing part and connecting the lead wire of the stator winding and the motor lead wire. A stator for a small electric motor, comprising a connection insulator formed by processing and forming a single insulating film into a part and an insulating part bendably extended to the other end of the fixed part.