JPS646627Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a microphone support arm that is suitable for a microphone that is worn on a user's head together with a headphone and placed near the user's mouth.

FIG. 1 shows an example of a microphone used with a headphone by telephone operators and language learners. That is, this microphone 1 is attached to one end of a bendable support arm 2 called a flexible boom or the like, and is connected to, for example, a headband of a headphone (not shown) via a connector 3 provided at the other end of the support arm 2. By being attached to the section, the device can be placed near the user's mouth. In this case, as shown in FIG. 2, the conventional support arm 2 includes a shielded cable 5 and a wire 6 having appropriate flexibility in an outer cover 4 made of an electrically insulating material such as vinyl chloride resin. A type in which the blades are inserted almost parallel to each other is used, but this requires a certain degree of thickness and creates a strange feeling when bent. That is, there is a large deviation between the center of the wire 6 and the center of the support arm 2, and the shield cable 5
Since the wire itself has some bending resistance, a phenomenon occurs in which it is easy to bend in a direction perpendicular to an imaginary plane containing the wire 6 and shielded cable 5, but difficult to bend along that imaginary plane.

Therefore, an object of this invention is to provide a microphone support arm that can be made thinner than conventional ones and has a structure that hardly causes discomfort when bent.

Hereinafter, an embodiment of this invention will be described in detail with reference to FIGS. 3 and 4.

This support arm 10 includes an inner conductor 11 constituting a shielded cable, an electrical insulating material 12 formed around the inner conductor 11, an outer conductor 13 braided around the electrical insulating material 12, and an outer conductor 13 that is braided around the electrical insulating material 12. An outer skin 14 made of an electrically insulating material covered on 13
Inside the electric insulating material 12 formed around the internal conductor 11, there is a rod-shaped body 15 made of, for example, wire, which is flexible and has an appropriate self-retaining property. 11 and extends substantially parallel thereto. In this embodiment, the internal conductor 11 having an insulating coating 16 is used, but the internal conductor 11 may be inserted into the electric insulating material 12 without being exposed together with the rod-shaped body 15.

According to the above configuration, since the outer sheath 14 of the shielded cable can be used as the outer sheath of the support arm 10, the outer diameter becomes thinner, and its presence becomes thinner to the extent that it does not become a nuisance to the user. , which is also preferable in terms of design. Moreover, the rod-shaped body 15
and the internal conductor 11 can be placed as close as possible to the center of the support arm 10, so they can be bent with almost the same force in either direction, eliminating the sense of strangeness that occurs in the conventional case. rarely occurs. Furthermore, in the process of manufacturing a shielded cable, it is sufficient to embed the rod-shaped body 15 in the electrical insulating material 12, which has the advantage of requiring fewer man-hours than conventional manufacturing. It should be noted that although the above embodiment concerns a support arm of a microphone used in combination with a headphone, it is of course applicable to other microphones. Further, a plurality of internal conductors may be inserted into the shielded cable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a microphone used with a headphone etc. Fig. 2 is a perspective view showing the internal structure of a conventional support arm, and Fig. 3 is a perspective view showing the internal structure of the support arm of this invention. , 4th
The figure is a sectional view taken along the line -- in FIG. 3. In the figure, 1 is a microphone, 2 and 10 are support arms, 11 is an internal conductor, 12 is an electrical insulating material, 13 is an external conductor, 14 is an outer cover, and 15 is a rod-shaped body.

Claims (1)

[Claims for Utility Model Registration] A bendable support arm that supports a microphone in any direction, comprising an internal conductor, an electrical insulating material formed around the internal conductor, and an electrical insulating material formed around the electrical insulating material. In a cable having a shielded cable consisting of an outer conductor made of a braided body or the like, and an electrically insulating sheath formed around the outer conductor, the electrically insulating material formed around the inner conductor contains the 1. A support arm for a microphone, characterized in that a rod-shaped body made of flexible and self-shape-retaining wire or the like is inserted through the internal conductor substantially parallel to the internal conductor without electrically contacting it.