JPH0514696Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to molded insulators for small rotating machines, particularly for rotating machines such as compact and flat step motors used in OA equipment. This invention relates to molded insulators.

In recent years, as OA equipment has become more labor-saving and downsized,
It is also desired that step motors be made smaller and flatter.

[Conventional technology]

Conventionally, when making a motor flat, the stator is also made flat, so as shown in Figure 5, molded insulators 2 are inserted from both sides of the flat stator 1 as shown by the thick arrows, and coils are wound around them. and molded insulator 2,
2 insulates the coil from the stator. After winding the coil, a lead wire is connected to the coil and the connection portion is wrapped in an insulating tube, and it is desirable that such a connection portion be located near the molded insulator and fixed somewhere.

[Problem that the invention attempts to solve]

When fixing, there is a problem in that if there is a margin in the winding, the gap in the slot becomes wide, making it difficult to fix the connecting portion, that is, the insulating tube.

This invention was made in view of the above-mentioned problems, and the purpose is to provide a molded insulator with a structure that allows easy fixation of an insulating tube that encloses the connection between the coil and the lead wire. .

[Means for solving problems]

In order to achieve the above object, the molded insulator for a small rotating machine according to this invention is characterized by having a pair of protrusions for holding an insulating tube surrounding a connecting portion.

[Effect]

Since the pair of protrusions are located substantially parallel to each other and spaced apart from each other, the insulating tube can be pushed into the groove formed by the pair of protrusions and easily fixed with adhesive.

〔Example〕

This invention will be described in detail below with reference to the illustrated embodiments.

As shown in FIGS. 1 and 2, the molded insulator 2 is a flat annular body having a pair of protrusions 3 inside the slot. As shown in more detail in FIG. 3, the protrusions 3 are arranged on the inner wall 2a in the slot 2A between the coil holding protrusions 2B around which the coil 4 is wound.
They extend parallel to each other along the axial direction of the stator 1. Note that this coil 4 is insulated from the stator 1 by this pair of molded insulators 2. Further, this molded insulator 2 is attached to both sides of the stator 1 as shown in FIG.

With this configuration, the groove 3 is formed between the projections 3.
a is formed, as shown in Figs. 3 and 4, put together the insulating tube 7 that wraps the connection part 6 of the coil 4 with the lead wire 5 (as shown by the arrow).
By inserting it into the groove 3a and supporting it with the protrusion 3, the insulating tube 7 can be easily fixed with the adhesive applied to the groove 3a. FIG. 4 shows the state after fixing.

Furthermore, since the pair of protrusions 3 are integrally formed on the inner wall 2a in all the slots 2A, even when the molded insulator is installed ignoring the installation position in the rotational direction when assembling the stator 1, the As shown in FIG. 4, a lead wire 5 for drawing out can be fixed via the pair of protrusions 3, and is configured to improve workability during assembly.

[Effect of idea]

As described above, according to this invention, since the molded insulator is provided with protrusions, the insulating tube can be easily fixed with adhesive by being pushed between the protrusions and supported.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the molded insulator according to this invention, Fig. 2 is a side view, Fig. 3 is an enlarged perspective view of the circled part in Fig. 1, and Fig. 4 is a completed state of the stator. FIG. 5 is a front view showing the relationship between the stator and the molded insulator. DESCRIPTION OF SYMBOLS 1... Stator, 2... Molded insulator, 3... Protrusion, 4... Coil, 5... Lead wire, 6... Connection part, 7... Insulating tube.

Claims (1)

[Scope of utility model registration request] In a molded insulator for a small rotating machine that integrally includes a plurality of coil holding protrusions 2B and slots 2A provided on both sides of the stator 1 for winding the coil 4 while insulating it from the stator 1, all of the slots 2A A pair of protrusions 3 integrally formed on the inner wall 2a, and an insulating tube 7 that encloses a connecting part 6 provided between the protrusions 3 and connecting the coil 4 and the lead wire 5. The projections 3 are formed along the axial direction of the stator 1, and the insulating tube 7 is supported by each of the projections 3 and fixed to the inner wall 2a with adhesive. Molded insulation for rotating machines.