JPS6238652Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to earplugs worn by people working in noisy work sites to protect the inside of their ears from noise.

Conventional earplugs are often made of rubber or other material into a solid body with a tapered circumferential surface. In order to make the earplugs stick tightly to the circumferential surface of the ear canal, the earplugs must be pushed firmly toward the back of the ear canal. Therefore, there is a disadvantage that it gives an extra feeling of pressure to the ear canal, making it uncomfortable to wear.

The present invention aims to provide earplugs that can overcome these drawbacks.

An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 is a connecting rod, which is a pipe made of hard plastic that is bent into a U-shape so that both ends thereof are always close to each other. It is shaped to be biased. 2, 2 are bent pipes fixedly or removably fitted to both ends of the connecting rod 1; 3, 3;
is a plug provided at the tip of each bent tube 2, 2, which is molded into a balloon shape from rubber or flexible plastic, and its hollow portion communicates with the hollow portion of the connecting rod 1. 4,
Reference numeral 4 denotes a stopper lid provided at the base of each stopper 3, 3, which closes the entrance of the external auditory canal when each stopper 3, 3 is inserted into the external auditory canal. Reference numeral 5 denotes a fluid pressure feeder, which presses a cylinder 6 that communicates with the hollow part of the connecting rod 1 at the middle part of the connecting rod 1, a rubber ball 7 provided on the wall of the cylinder 6, and a rubber ball 7. It consists of 8 clips.

Next, we will explain how to use the earplugs constructed as described above. When the pressure on the rubber bulb 7 by the clip 8 is released, the rubber bulb 7 expands and the inside of the rubber bulb 7 becomes negative pressure. The air that was being pumped through the hollow part of 1 to each stopper 3, 3 is transferred to the rubber bulb 7.
The water flows back into the interior, and each of the stoppers 3, 3 deflates as shown in the second figure. When the user inserts the deflated plugs 3, 3 into his/her own external auditory canal and presses them with the clip 8 as shown in the first figure, the air inside the rubber bulb 7 passes through the hollow part of the connecting rod 1 to each ear canal. Since the plugs 3, 3 are fed under pressure, each plug 3, 3 expands as shown in the fourth diagram and comes into close contact with the circumferential surface of the external auditory canal 9, thereby preventing noise from entering the external auditory canal 9. .

In the above-mentioned embodiment, an example was shown in which air is force-fed to each of the plug bodies 3, 3, but it may also be configured to force-feed water or other liquid.

Further, in the above embodiment, the rubber ball 7 is held by the clip 8.
Although the liquid pressure feeder 5 has a structure of pressing with
As shown in the figure, a communication path 10 between the rubber ball 7 and the connecting rod 1
A check valve 11 may be provided to adjust the amount of expansion of each stopper 3 according to the amount of pressure applied to the rubber bulb 7, and fluid pressure feeders having various other structures may be employed.

Further, in the above embodiment, an example is shown in which the connecting rod 1 is curved in a U-shape, but it may be formed into any shape as long as it can be worn without getting in the way of the wearer's face.

Since the present invention is configured as described above, the plug is expanded by the pressure of fluid in the ear canal of the wearer,
Since it can fit closely along the circumference of the ear canal, there is no need to forcefully push it into the ear canal, and the inside of the ear canal can be protected from noise without causing discomfort to the wearer. Even if there is a size difference in the diameter of the ear canal, there is no need to adjust the size of the earplugs, and anyone can wear them. Further, since each plug body is provided at both ends of the connecting rod, it is easy to handle and attach/remove from the ear, and there are advantages such as being able to prevent powder loss of the plug body.

[Brief explanation of the drawing]

Fig. 1 is a front view of the earplug according to the present invention, Fig. 2 is a cross-sectional view of the plug in a deflated state, Fig. 3 is a cross-sectional view showing a modified embodiment of the fluid pump, and Fig. 4 is a state in use. FIG. 1... Connecting rod, 3, 3... Plug body, 5... Fluid pressure feeder.

Claims (1)

[Scope of utility model registration request] A pipe-shaped connecting rod formed in a shape such that both ends are always urged toward each other, and a hollow connecting rod formed of a flexible material into a balloon shape and provided at both ends of the connecting rod. Each plug provided to communicate with the connecting rod communicates with the hollow part of the connecting rod at the intermediate part of the connecting rod, and the fluid is pumped into the inside of each of the plugs through the hollow part of the connecting rod. Earplugs consisting of a fluid pump.