JPS6314547Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a microphone provided with a floating structure, and its purpose is to reduce the influence of vibration noise caused by variations in components and structure through a simple structure.

Figures 1 and 2 show the structure of a conventional dynamic microphone, in which 1 is a microphone unit and 2 is a unit holder, both of which form an integrated acoustic conversion unit 3 with screws. . Also, 4 is a rubber holder, 5 is a neck, and 6 is a rubber holder.
1 and 2 are grips, respectively forming a housing portion 5 connected by screws, similar to the acoustic transducer unit. Furthermore, the acoustic conversion unit 3 is held in the housing section via a side cushion 9.

According to the microphone configured in this way,
Vibration noise generated by holding the housing part by hand or by other external force is directly transmitted to the acoustic conversion unit 3.
Before the sound is transmitted to the microphone, the frequency is converted by the inverted cushion 2 and the back cushion 9, and the vibration of the diaphragm of the microphone unit 1 is synchronized with the vibration of the acoustic conversion unit 3, so that no output is generated due to vibration noise from the microphone unit. That's what I do.

However, according to this structure, the side cushion 8
In order to utilize the elasticity and internal damping resistance of each part of the back cushion 9, the vibration of the diaphragm of the microphone unit 1 and the sound conversion unit are The disadvantage is that it is difficult to synchronize the vibrations of the three.

The present invention eliminates the above-mentioned drawbacks of the conventional technology, and an embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In FIGS. 3 and 4, 10 is a microphone unit, 11 is a unit holder,
The acoustic conversion unit 12 is integrated with screws.
is formed. Further, 13 indicates a neck, and 14 indicates a grip, which are connected to each other by screws to form a housing portion 15. Further, the acoustic conversion unit 12 includes a side cushion 16, a sealing rubber 17,
and the housing portion 1 via the back cushion 18.
It is held at 5.

The side cushion 16 and the sealing rubber 17 have a thin wall thickness and a flexible dome shape.
In addition, the side cushion 16, the unit holder 11,
An air chamber 20 is formed by the neck 13 and the sealing rubber 17, and the neck 13 is provided with a small hole 19 for communicating the air chamber 20 with the outside air.

Next, the operation of the embodiment having the above configuration will be explained.

The vibration noise generated by touching the housing 15 by hand or by other external force is similar to the conventional example described above.
The vibrations of the diaphragm of the microphone unit 10 and the vibrations of the acoustic conversion unit 12 are synchronized, and as the acoustic conversion unit 12 vibrates, the air chamber 20 is compressed or expanded by the unit holder 11. The compressed or expanded air in the air chamber 20 enters and leaves the outside air through the small hole 19, creating air resistance. That is, in addition to the conventional example based on the elasticity and internal damping resistance of the side cushion 16, the sealing rubber 17, and the back cushion 18, an independent damping resistance is provided to the air chamber 2.
This was realized using 0.

Therefore, according to this embodiment, since the side cushion 16 and the sealing rubber 17 have elasticity in shape, there is little variation in elasticity or due to the holding method. Further, since the damping resistance is provided using air resistance, by making the small holes 10 of a constant size, it is possible to reduce variations in the damping resistance.

The present invention has the above-described configuration, and according to the present invention, when the microphone is subjected to vibration noise, etc. that occurs when the microphone is held in the hand or when other external forces are applied, the diaphragm of the microphone unit is This has the advantage that the vibrations and the vibrations of the acoustic conversion unit can be synchronized easily with little variation.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a conventional microphone, Fig. 2 is a side sectional view of the main parts thereof, Fig. 3 is an exploded perspective view of a microphone according to an embodiment of the present invention, and Fig. 4 is a side view of the main parts. FIG. 10...Microphone unit, 12...Acoustic conversion unit, 15...Microphone housing part, 1
9...Small hole, 20...Air chamber.

Claims (1)

[Scope of utility model registration request] An air chamber is provided between the acoustic conversion unit and the microphone housing, and a hole communicating with the outside air is provided in a part of the air chamber, so that the air in the air chamber is compressed or expanded by vibration of the acoustic conversion unit. A microphone characterized in that air resistance for attenuation is generated accordingly.