JPH08186888A - Microphone cover - Google Patents

Abstract

PURPOSE: To obtain an inexpensive and disposable cover which is easily attachable and detachable, but holds the microphone after it is mounted on the microphone and is difficult to be removed from the microphone by using polyurethane foam as the material of the cover and manufacturing the cover so as to be slightly smaller than the microphone. CONSTITUTION: A polyethane foam product is used for this cover. The microphone cover 6 is manufactured so that the inner periphery length in the middle of the height direction of the cover 6 may be smaller than the outer periphery length in the middle of the height direction of a microphone sound collecting part 2, and the inner periphery length of the opening end of the cover 6 may not be shorter than the inner periphery length in the middle of the height direction of the cover 6. The microphone sound collecting part 2 is a globular shape or approximate globular shape, and the outer periphery length in the middle of the height direction becomes a maximum outer periphery. By utilizing the elasticity of polyurethan foam, the microphone cover 6 is extended and is mounted on a microphone 1 when the cover is mounted on the microphone 1. While the cover is mounted on the microphone, the cover holds the microphone sound collecting part 2 by the polyurethane foam contraction force and can be tightly mounted on the microphone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone cover for covering a sound collecting section above a microphone.

[0002]

2. Description of the Related Art Polyurethane foam has been often used as a microphone cover. The purpose of wearing such a microphone cover is to prevent breathing and wind from hitting the microphone sound collecting section and generating noise, and to prevent contamination by saliva and contamination due to accidental scattering of drinks, and further The point is to reduce the impact.

FIG. 2 is a sectional view showing a conventional microphone cover 4 and microphone 1. The microphone cover 4 is configured to house the microphone sound collecting unit 2 in a hole 4a formed inside thereof.

An edge 5 projecting inward is provided around the open end of the hole 4a so that the microphone cover will not easily come off by narrowing the open end (hereinafter, this will be referred to as a conventional technique). Referred to as an example).

The microphone cover 4 of the conventional example described above is formed by forming a polyurethane foam (slab foam) with a heating wire or the like in accordance with the outer shape of the microphone cover, and hollowing it into a microphone shape by heating the inside with the heating wire or the like. It is manufactured by forming the hole 4a.

On the other hand, the microphone itself can prevent saliva and the like from being attached by the microphone cover, but naturally saliva and the like are attached to the microphone cover, which is unsanitary.
Therefore, for example, when an unspecified number of people use it, such as karaoke, there is a problem that the user feels unclean and dislikes it. Therefore, a disposable type microphone cover has been demanded, and a microphone cover described in Japanese Utility Model Publication No. 3-128393 (conventional example) and Japanese Utility Model Publication No. 6-48293 (conventional example) has been devised.

The conventional microphone cover has a sponge cover inner wall to which a gauze impregnated with a disinfectant / aromatic agent is attached, and the conventional microphone cover is a bag-shaped microphone cover.

[0008]

The microphone cover of the above-mentioned conventional example is difficult to remove due to the tightening force of the edge portion 5, so that it is difficult to attach / detach, and the conventional example does not consider disposables. Durability is important, it is solid, and there is a problem that it is expensive, so it is not suitable for disposable use.

On the other hand, since the inside of the above-mentioned conventional microphone cover is gauze, it is not stretchable, and since the conventional microphone cover is also made of paper, it is not stretchable and is simply placed on the microphone sound collecting section. There was a problem that it was easily detached because it was attached to the extent that it was only there. Especially when it is used for karaoke, the microphones are handed to the next singers one after another, or they dance while singing, so the handling of the microphones becomes messy. , Was actually difficult to use.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a disposable microphone cover that does not easily come off during use of the microphone, is easily attached and detached, and is inexpensive. To do.

[0011]

The microphone cover according to the present invention is made of polyurethane foam, and the inner circumferential length of the microphone cover in the height direction is the middle of the microphone sound collecting section in the height direction. The outline is that the inner peripheral length of the open end of the microphone cover is not shorter than the inner peripheral length of the microphone cover in the height direction.

[0012]

The general microphone sound collecting portion has a spherical shape or a shape close to a spherical shape, and the outer peripheral length in the middle in the height direction is the maximum outer circumference of the microphone. Therefore, the inner circumference length in the height direction of the microphone cover is made smaller than the maximum outer circumference length of this microphone, and the elasticity of polyurethane foam is used to stretch and install the microphone cover when installing it to the microphone. The microphone sound collection part is sandwiched by the contraction force of polyurethane foam, and it is firmly attached inside.

[0013]

1 (a) is a sectional view showing a microphone cover 6 according to an embodiment of the present invention, FIG. 1 (b) is a side view of a microphone 1, and FIG. Microphone 1
It is a side view which shows a mode that the microphone cover 6 was attached to.

The microphone cover 6 is made of a soft polyurethane foam (polyester polyol) having a thickness C of 4 mm, and has a slightly vertically long dome shape with one end having a hemispherical shape. The diameter B of the inner circumference of the open end 6a is 48 mm, and the diameter A of the inner circumference in the middle of the height direction is 40 mm. The diameter D of the maximum outer circumference (outer circumference in the middle in the height direction) of the sound collecting portion 2 of the microphone 1 generally used for karaoke is 54 mm, and the middle part A in the height direction of the microphone cover 6 is smaller than this. Has become. When the microphone cover 6 is attached to the microphone 1, the microphone cover 6 is attached so as to be stretched. The open end 6a of the microphone cover 6 of this embodiment is slightly larger than the middle end, and does not cause any injury in the work of mounting on the microphone.

As shown in FIG. 1C, the microphone cover 6
When the microphone cover 6 is attached, the sound collecting portion 2 of the microphone 1 extends in the vicinity of the middle of the microphone cover 6 in the height direction, and the sound collecting portion 2 is sandwiched by the contracting force of the microphone cover 6, so that the sound can be easily collected. It does not come off. Further, since there is no protruding portion inside the microphone cover open end 6a for catching, there is no difficulty in removing the microphone cover 6.

In addition, since the microphone cover 6 of this embodiment is mainly used for karaoke and is a disposable type, the polyurethane foam may be thin and can be manufactured at low cost.

The polyurethane foam used as the material for the microphone cover may be a polyether polyol type or the like in addition to the polyester polyol type. Further, a polyurethane foam impregnated with an aromatic may be used.

[0018]

Since the microphone cover according to the present invention is a polyurethane foam cover which is slightly smaller than the microphone, it is difficult to hold the microphone due to its elasticity, and it is not difficult to attach and detach, and is an inexpensive disposable type. It is a microphone cover. Therefore, by frequently replacing the microphone cover, the microphone can be used cleanly.

[Brief description of drawings]

FIG. 1 is a diagram showing a microphone cover and a microphone according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional microphone cover and microphone.

[Explanation of symbols]

 1 Microphone 2 Sound collecting part 3 Handle part 6 Microphone cover 6a Open end

Claims (1)

[Claims] 1. A microphone cover for covering a sound collecting portion of a microphone, wherein the microphone cover is made of polyurethane foam, and an inner circumferential length of the microphone cover in a height direction is a height of the microphone collecting portion. A microphone cover characterized in that it is smaller than the outer peripheral length in the middle of the direction, and the inner peripheral length of the open end of the microphone cover is not shorter than the inner peripheral length in the middle of the microphone cover height direction.