JPS6020884Y2 - Electromagnetic drive winding body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to electromagnetic drive windings used in electromagnetic equipment such as relays and printheads for printers.

Conventionally, this type of winding body is formed by winding a wire material around the outer periphery of a winding shaft 2a of a bobbin 2 made of plastic, as shown in FIG. It is secured with bobbin 2.

As shown in FIG. 2, when a large number of winding bodies having such a structure are arranged in a print head of a printer whose coil arrangement interval is narrowly restricted, the use of the bobbin 2 hinders miniaturization.

In order to avoid this, the coil 1 is fitted directly onto the core 3, or an insulating tape is wound around the outer periphery of the core 3, and then the coil 1 is fitted onto the core 3.

However, in the former case, it is difficult to ensure sufficient electrical insulation, and in the latter case, it is very complicated to wrap the insulating tape around the outer circumferential surface of the core 3, which is arranged at narrow intervals, resulting in productivity problems. is decreasing.

The purpose of this invention is to solve the above-mentioned problems.By fusing insulating tape to the inner wall of the coil in advance, it is possible to ensure highly reliable insulation between the coil and the core into which it is fitted. The object of the present invention is to provide an electromagnetic drive winding body in which a coil can be easily mounted.

The electromagnetic drive winding body of the present invention is characterized by having an insulating tape wound in a cylindrical shape and a heat-fusible coil wound around the outside of the insulating tape.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 3 is a perspective view showing an embodiment of the electromagnetic drive winding according to the present invention, in which an insulating tape 12 is fused to the inner wall surface of a cylindrical heat-fusible coil 11.

As a result, insulation between the thermal fusion coil 11 and the core into which it is fitted can be ensured with high reliability, and it is also possible to assemble it as a single item extremely easily.

By the way, such an electromagnetic drive winding body is manufactured by, for example, winding the insulating tape 12 around a winding arbor and then heating the heat-fusible coil 11 so that the insulating tape 12 is applied to the inner wall surface of the heat-fusible coil 11. It can be formed with an adhesive coating.

As explained above, according to the present invention, it is extremely easy to integrate into various electromagnetic devices, contributing to productivity improvement, and
It is possible to obtain a winding body that can ensure highly reliable electrical insulation with the magnetic body in which it is fitted.

It should be noted that when the winding body of the present invention is applied to small equipment with strict restrictions on arrangement spacing, etc., the above-mentioned effects become more pronounced, but when applied to relatively large equipment, It's okay.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional electromagnetic drive winding body, Fig. 2 is a perspective view of a print head of a printer equipped with a conventional electromagnetic drive winding body, and Fig. 3 is an electromagnetic drive according to the present invention. It is a perspective view showing one example of a winding body. 11... Heat fusion coil, 12... Insulating tape.

Claims (1)

[Scope of utility model registration request] An electromagnetic drive winding body characterized by having an insulating tape wound in a cylindrical shape and a heat-fusible coil wound around the outside of the insulating tape.