JPS582125Y2 - Motor stator winding terminal treatment structure - Google Patents

Description

[Detailed description of the invention] This invention insulates and fixes the connection part between the lead wire and the coil in a small electric motor by inserting it into the space of a resin molded product housed in the notch of the stator core. The purpose of this study is to rationalize terminal processing with regard to the stator winding terminal processing structure.

As shown in FIGS. 1 and 2, the conventional stator winding terminal processing structure for electric motors involves connecting the Hiji wire 1 and the terminal wire 2 of the coil by welding or soldering, and then insulating the connection part 3. Therefore, an insulating tube 4 was placed over the stator coil 5 and fixed with a tying thread 6.

Further, in order to protect the exit wire 1 from insulation, it was necessary to lay an insulating paper 7 between the sunrise wire 1 and the stator coil 5.

This winding terminal processing structure requires a large number of man-hours as described above, and because of the weft work, the connection part 3 is weak against tensile strength and is likely to break, and the lead wire 1 and the coil terminal wire 2
Since the connection part 3 is installed on the stator coil 5 via the insulating tube 4, as the number of lead wires increases, the external dimensions of the stator coil including the connection part 3 increase, and the outer frame At the same time, this made it difficult to shape the outer shape of the coil.

In addition, in FIG. 1, 8 is a stator core.

The present invention solves the conventional drawbacks by bringing the connection between the Hiji wire and the coil into the stator cutout via a resin molded product.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 8.

3 to 5 are representative embodiments of the present invention.

A notch 9 is provided in the stator core 8, and a resin molded product 10 housed in the notch 9 is provided with slits 11° 12 and a space 13 through which at least a portion thereof passes.

To fix the connecting part between the eyeliner 1 and the coil terminal wire 2, connect the connected Hiji wire 1 and the coil terminal wire 2 to each resin molded product 1.
0 through Surin N1, 12, place the connection part 3 in the space 13 in the resin molded product 10, and inject the insulating resin into the space 13 to insulate the connection part 3 and insulate the resin molded product 10. At the same time, the resin molded product 10 and the stator core 8 are fixed together through the through holes.

According to the present invention, insulation and fixation of the connection between the lead wire and the coil can be done simultaneously by a simple method of injecting insulating resin, which greatly reduces the number of work steps and improves the tensile strength of the Hiji wire. .

Further, since the stator core and the resin molded product can be fixed at the same time when the insulating resin is injected, there is no need to press fit the resin molded product into the stator core or use a separate fixing means.

Furthermore, if self-fused wires are used, there is no need for tying strings or the like in the outer shape of the coil, and shaping of the outer shape of the coil is greatly simplified.

6 to 8 show other embodiments of the present invention.

6 and 7 show a structure in which a terminal wire processing pin 14 is further provided on the resin molded product 10, and the surplus portion of the terminal wire 2 is wound around it.

Figures 8 and 9 show a flat plate 15 on the sunrise line side of the resin molded product 10.
By providing this by integral molding with the resin molded product 10 and insulating the blind wire 1 and the stator coil 5, there is no need to insulate the Hiji wire 1 and the stator coil 5 by another means. It is something.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional winding end processing structure, Fig. 2 is an internal sectional view of a part of the insulating tube shown in Fig. 1, and Fig. 3 is a perspective view showing an end processing structure in an embodiment of the present invention. Figure 4 is a perspective view of the stator core in Figure 3, Figure 5 is a perspective view of the resin molded product in Figure 3, Figure 6 is a perspective view of another embodiment of the present invention, and Figure 7. 6 is a perspective view of the resin molded product in FIG. 6, FIG. 8 is a perspective view of still another embodiment of the present invention, and FIG. 9 is a perspective view of the resin molded product in FIG. 8. 1... Lead wire, 2... Stator coil terminal wire, 3... Connection part between lead wire and coil terminal wire,
5... Stator coil, 8... Stator core,
9...Notch part of stator core, 10...
Resin molded product, 13...Space for the lead wire and coil terminal wire.

Claims (1)

[Scope of Claim for Utility Model Registration] A notch is provided in a part of the stator core, and a resin molded product accommodated in the notch includes a space for accommodating the connecting part of the guide wire and the coil, and A slit is provided for guiding the drawing line and the end of the coil, and the space is formed so as to communicate with the stator core, and the resin molded product is stored in the notch of the fixed core. The connection part between the Hiji Line and the coil is accommodated in the space, and an insulating resin is injected to insulate and fix the connection part between the Hiji Line and the coil, and to fix the resin molded product and the stator core. Stator winding terminal treatment structure for electric motors.