JPH0984170A - Ear plug for ear microphone and earphone or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ear plug capable of changing its shape when it is put on, fitting to any person's external auditory canal and giving a favorable feeling of attachment by forming a rising part with elasticity at its tip hollow part. SOLUTION: The rising part 9 is formed in the head hollow part of the ear plug 1 and a sound emitting hole 10 is arranged through a head surface. The rising part 9 is thinned and easy to deform. The rising part 9 can be formed at one place of the head hollow part 1a and can also be formed at the plural places or over a whole periphery. It is preferable that a rib 11 for making restoration property good is provided at the inner surface of the head hollow par 1a in the ear plug 1, especially at the inner surface of the rising part 9. When the ear plug is inserted into the external auditory canal, more or less pressure is given to the riging part 9 of the ear plug 1 head part in accordance with the size of the external auditory canal. The thinned rising part 9 deforms so as to fit the shape of the external auditory canal in accordance with the pressure and naturally fits.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to earplugs at the tip of ear microphones, earphones, etc., which are used by inserting them into the ear canal.

[0002]

2. Description of the Related Art Ear plugs (reference numeral 23 in FIG. 8; FIG. 8 shows an ear microphone), such as ear mics and ear horns, which are used by inserting them into the ear canal, are loose with respect to the ear canal. If it is an ear microphone, that is, in a device capable of two-way simultaneous communication that incorporates a bone conduction voice vibration pickup mechanism in the ear canal and a sound pressure type speaker, deterioration or deterioration of the microphone sensitivity level may occur. It is easy to invite, and when it is too tight for the ear canal, the wearing feeling becomes poor.

[0003]

Although the size and shape of the external auditory meatus are not uniform and vary considerably among individuals, the size and shape of the provided earplugs 23 (FIG. 8) are uniform. Therefore, the general earplugs 23 have different wearing sensations depending on the person, and some people feel that a certain earplug 23 is just right, and some feel that it is too loose or too tight. Therefore, the present invention is capable of changing the size and shape according to the size and shape of the user's external auditory meatus at the time of wearing, and fits well to any number of external auditory canals to provide a good wearing feeling. The challenge is to provide.

[0004]

DISCLOSURE OF THE INVENTION The present invention is an earplug at the tip of an ear microphone, an earphone, etc., which is inserted into the ear canal and is made of a material such as rubber or plastic. An earplug characterized by forming a raised portion having elasticity by partially or entirely thinning a hollow portion at the tip communicating with, and forming a sound emission hole on the tip surface. The above problem was solved. Preferably, a rib is provided on the inner surface of the hollow tip portion. Alternatively, a restoring material such as a doughnut-shaped ring made of an elastic material, a leaf spring or a coil spring having a hole at the center thereof is loaded in the hollow portion at the tip.

The present invention also relates to an earplug at the tip of an ear microphone, an earphone, etc. which is inserted into the ear canal, wherein a pipe with a flange is provided at the tip opening so that the pipe portion projects from the tip opening. The above problem is solved by the earplug, which is characterized in that the external ring having the insertion hole of the pipe formed at the center or at a position displaced from the center is fixed to the pipe.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. Although the illustrated examples are all ear microphones, the earphones can be configured in accordance with this. First, the first embodiment shown in FIGS. 1 and 2 will be described. In the drawings, 1 is an earplug and 2 is a plastic case.
A cover 3, a rear cover 4, and a cable support 4 are provided.

The case 2 is an earplug 1 having a hollow tip end portion 1a.
And a microphone (vibration pickup mechanism) 6 and a speaker 7 are built in. A long portion of the microphone 6 containing the vibration-electric conversion element extends into the protrusion 5, and a sound guide hole 8 is formed so as to open from the sounding portion of the speaker 7 through the protrusion 5.

The earplug 1 is most preferably made of rubber or plastic, particularly silicone rubber because it has a good moldability, but it is also recommended to use a shape memory plastic, which has a predetermined shape as it is inserted into the ear canal. A raised portion 9 is formed in the hollow tip end portion 1a of the earplug 1, and a sound emission hole 10 is provided on the tip end surface thereof. The raised portion 9 has a thin wall and is easily deformed. The raised portion 9 may be formed at one location of the hollow tip end portion 1a, or may be formed at a plurality of locations or over the entire circumference (FIG. 6) (the same applies to the following examples). Inner surface of the hollow end 1a of the earplug 1, especially the raised portion 9
It is preferable to provide ribs 11 on the inner surface of the above in order to improve the restoring property.

The second embodiment shown in FIG. 3 is the same as the first embodiment except that the rib 11 is provided. However, in the second embodiment, a donut-shaped ring 12 is fitted in the hollow tip end portion 1a in order to ensure the resilience of the raised portion 9. The ring 12 is made of a material such as urethane foam, vinyl chloride chloride, etc., which is easily crushed and has a great restoring force, and the circular hole 13 at the center thereof coincides with the sound emission hole 10 at the time of fitting and the sound guide hole 8 is formed. Try to communicate.

In the third embodiment shown in FIG. 4, instead of the ring 12 of the second embodiment, a cruciform leaf spring 14 is provided in the hollow end portion 1 of the tip.
It is arranged in a. The leaf spring 14 has a curved portion 15 extending in all directions, and a circular hole 16 is provided in the center thereof. The circular hole 16 communicates with the sound output hole 10 and the sound guide hole 8 when the leaf spring 14 is placed in the hollow tip end portion 1a.

In the fourth embodiment shown in FIG. 5, instead of the ring 12 in the second embodiment and the leaf spring 14 in the third embodiment, a coil spring 17 is fitted in the hollow tip end portion 1a. The coil spring 17 may be a general metal such as phosphor bronze, but is preferably made of a shape memory alloy.

In any of the above embodiments, when the earplug 1 is inserted into the ear canal, more or less pressure is applied to the raised portion 9 at the tip of the earplug 1 according to the size of the ear canal. The raised portion 9 having a reduced thickness is deformed according to the pressure thereof, in other words, deformed to fit the shape of the ear canal, and thus fits comfortably into the ear canal regardless of its size. And
When the rib 11 (first embodiment), the ring 12 (second embodiment), the leaf spring 14 (third embodiment), or the coil spring 17 (fourth embodiment) restores from the ear canal,
The deformed raised portion 9 is returned to its original shape.

The fifth embodiment shown in FIG. 7 is made of a material such as rubber, plastic or metal (preferably made of a foam material such as urethane or vinyl chloride) in which the pipe insertion hole 18 is formed at the center or offset from the center. The case where the outer ring 19 is used is shown. In this case, the raised portion 9 in each of the above embodiments is not provided, and the outer ring 19 is attached to the outside of the earplug 1.
That is, a plastic pipe 21 having a flange 20 is inserted into the pipe insertion hole 18 (usually adhered and fixed), and the pipe 21 is hung by hooking the flange 20 on the end opening edge of the earplug 1. It is attached to the earplug 1, and thus the outer ring 19 is attached to the outside of the earplug 1. Preferably, the pipe 21 is removable and / or rotatable. The outer diameter of the outer ring 19 is slightly larger than the outer diameter of the tip of the earplug 1.

In the case of the fifth embodiment, the outer ring 19 abuts on the wall of the ear canal when inserted into the ear canal. However, when the outer ring 19 has elasticity, it corresponds to the shape of the ear canal. It deforms and adapts to the ear canal. When the outer ring 19 is removed from the ear canal, the outer ring 19 returns to its original shape due to its restoring force. When the pipe insertion hole 18 is eccentrically provided and the pipe 21 is rotatable, the user needs to use the outer ring 1
9 can be rotated to the optimum position for use.

[0015]

The present invention is as described above, and since the earplug according to the present invention is provided with the appropriately elastic raised portion or the outer ring, the size and shape of the external ear canal of the user can be improved. Regardless of these, the raised portion or the external ring is easily deformed or displaced so as to fit the ear canal, so that a good wearing feeling can be obtained, and the ear microphone does not cause deterioration or deterioration of the microphone sensitivity level. effective.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3A is a vertical sectional view of a second embodiment of the present invention,
(B) is a perspective view showing a restoration material used therein.

FIG. 4A is a longitudinal sectional view of a third embodiment of the present invention,
(B) is a perspective view showing a leaf spring used therein.

FIG. 5A is a vertical sectional view of a fourth embodiment of the present invention,
(B) is a perspective view showing a coil spring used therein.

FIG. 6 is a side view of another configuration example of the rising portion in the present invention.

FIG. 7 is a vertical sectional view of a fifth embodiment of the present invention.

FIG. 8 is a side view showing a conventional earplug.

[Explanation of symbols]

 1 Earplug 1a Tip hollow part 8 Sound guide hole 9 Raised part 10 Sound emission hole 11 Rib 12 Ring 14 Leaf spring 17 Coil spring 18 Pipe insertion hole 19 External ring 20 Flange 20 21 Pipe

Claims (4)

[Claims] 1. An earplug at the tip of an ear microphone, an earphone, etc. to be inserted into the ear canal, which is made of a material such as rubber or plastic, and is partly formed in the hollow end of the tip communicating with the sound guide hole. An earplug characterized in that a raised portion having elasticity is formed by thinning the whole or around the entire circumference, and a sound emission hole is formed on the tip surface. 2. The earplug according to claim 1, wherein a rib is provided on the inner surface of the hollow hollow tip. 3. The earplug according to claim 1, wherein a restoring material such as a donut-shaped ring made of an elastic material, a leaf spring having a hole at the center thereof, or a coil spring is loaded in the hollow portion at the tip. 4. An earplug at the tip of an ear microphone, an earphone, etc. to be inserted into the ear canal, wherein a pipe with a flange is provided at the tip opening so that the pipe portion projects from the tip opening. An earplug, which is installed and fixed to the pipe with an outer ring having an insertion hole for the pipe at a center or at a position offset from the center.