JPS585558B2 - acoustic vibration element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In order to make the sound current perceived as a realistic reproduced sound by the vibration of the eardrum and the bodily sensation, the present invention is designed to transmit the sound to the eardrum along with a vibrating element that generates a bodily sensation of vibration by the audio signal in the bass range. The present invention relates to an acoustic vibration element in which a speaker for listening via a speaker is embedded independently in a diaphragm, and by placing it on the cushioning material of a human body placement such as a chair, a small realistic sound space can be easily created. It can reproduce powerful sounds.

Generally, as the frequency of sound decreases from around 150 Hz, the frequency of the sound is confirmed with the ears due to the vibration of the eardrum, and the proportion of low-pitched sounds felt by the body increases due to the sound pressure.

So-called heavy bass sounds are air vibrations whose sound pressure is felt not only by the ears but also by the skin and body, and when the vibrations felt by the body and the auditory senses overlap, people experience true deep bass sounds.

Therefore, in order to ideally feel deep bass,
2. Description of the Related Art An object placed on a human body has been developed that generates a bodily-sensible vibration that is synchronized with an audio signal that drives a speaker or the like.

However, conventionally, human body mounts used for acoustics are
The structure itself is different from those commercially available, and for this reason, it was necessary to separately purchase the ornament.

Therefore, the present invention provides a human body placement device such as a chair that is generally available on the market, and if a cushioning material is attached to the surface side, the human body placement device that is commercially available can be simply placed on the surface side. The device is characterized in that it can be used as a human body mount for sound.

Embodiments of the present invention will be described below with reference to the drawings.

First, the structure of the electro-mechanical vibration converter V in the present invention will be explained.

In Fig. 1, a case body 1 of an electro-mechanical vibration converter is shown.
is composed of frames 2 and 3 which are shaped like new faces.
A horizontally extending plate-shaped flange portion is integrally provided on the peripheral edge of the opening of 3, and the flange portions 4 and 5 They are combined by pitting like-minded people against each other.

An outer peripheral edge 6a of an annular damper 6 made of an elastic material is sandwiched between the flanges 4 and 5 of the frames 2 and 3, and an inner peripheral edge 6b of the damper 6 is directed in the opposite direction to the flanges 4 and 5. It extends horizontally inward of the frames 2 and 3.

Next, a yoke including a magnetic pole 10 installed inside the case body 1 will be described.

The yoke 8 has a bottom plate 9 having a columnar part 9a in the center.
and an annular top plate 11.

An annular magnetic pole 10 is mounted and fixed on the bottom plate 9 with a columnar part 9a loosely fitted therein, and a top plate 11 is attached to the magnetic pole 10.
The inner edge 11a of the bottom plate 9 and the outer edge 9 of the columnar part 9a of the bottom plate 9
A magnetic monkey-shaped air gap 12 is formed between the bottom plate 9, the magnetic pole 10, and the top plate 11, and a magnetic circuit having the air gap 12 is formed by the bottom plate 9, magnetic pole 10, and top plate 11.

Then, in order to support the yoke 8 in the case body 1 at a plane position including the air gap 12, the outer edge of the top plate 11 and the magnetic pole 1
An inner circumferential edge 6b of a damper 6 is integrally fixed to a step 13 formed by the end face of the damper 6, and the damper 6 allows the case body 1 and the yoke 1 to be relatively displaceable.

In addition, in this embodiment, the yoke 8 is attached to the case body 1 with a gap 1.
2, the top plate 11
Although the damper 6 is integrally fixed to the stepped portion 13 between the yoke 8 and the magnetic pole 10, the mounting structure of the yoke 8 and the damper 6 is not limited to this. Any structure may be used as long as it can be disposed inside the case and its outer peripheral edge 6a can be fixed to the case body 1, and its inner peripheral edge can be fixed to the yoke 8.

In this case, the gap 12 includes a gap 12 that is perpendicular to the axis of the gap 12 (the axis extending in the vertical direction in FIG. 1) and that passes through the center of the vertical width of the gap 12 in FIG. It is most desirable that the yoke 8 be supported by the damper 6 on the case body 1 in a flat position.

Furthermore, the frames 2 and 3 are not limited to those having a dish-like cross section. It may be of any shape.

An opening 14 is formed in the center of the frame 3, and the opening 14
has a cylindrical coil frame 1 attached to a plate 15a.
5 is fitted, and the coil frame 15b plays h15a.
is integrally fixed to the frame 3, and a coil 16 wound around the coil frame 15 is disposed within the gap 12.

Next, the relationship between the electro-mechanical vibration converter and the diaphragm described above will be explained based on FIGS. 1 to 3.

Reference numeral 17 denotes a flat diaphragm, and the diaphragm 17 is made of foam, such as polyurethane foam with a foaming degree of 20 to 30 times, and vibrates well in the bass range, and is lightweight and rigid.
Furthermore, the human body support 20 is made of a flexible member that can be placed along a cushion material attached to the upper surface of an automobile seat, for example, as shown in FIG.

A mounting hole 18 is bored in the diaphragm 17, and the electro-mechanical vibration transducer is loosely fitted into the mounting hole 18, and the flanges 4 and 5 of the case body 1 are attached to the plate surface of the diaphragm 17. The vibration plate 17 is mounted and fixed thereon, and is embedded and attached within the diaphragm 17.

The thickness of the diaphragm 17 is slightly thicker than the thickness of the electro-mechanical vibration converter, and together with the fact that it itself has rigidity, it prevents the case body 1 from coming into direct contact with a rigid body. ing.

Furthermore, since the diaphragm 17 has rigidity, the diaphragm 17
It has the function of distributing and supporting the load of the human body, etc. applied to the diaphragm 17.
It is designed to vibrate effectively.

Note that the diaphragm 1T is not limited to a foam material such as polyurethane foam, but must vibrate well in the low frequency range, be lightweight, and be flexible enough to be laid along the cushioning material. and has enough rigidity to disperse and support the weight of a human body, etc., and prevent the case body 1 from coming into direct contact with the rigid body. A diaphragm may also be used.

Note that the cushioning material includes urethane foam attached to the body-mounted object, cloth wrapped around the frame of the human-body-mounted object, etc., and in short, the cushioning material is attached to the human-body-mounted object and includes the diaphragm 17 placed on it. In this case, the cushioning material may be any cushioning material for a human body placement device, as long as it does not suppress the vibration of the diaphragm 17.

Note that an elastic body such as urethane foam or sponge may be pasted on the surface of the diaphragm 17 on the side that comes into contact with the human body, so as to eliminate a sense of discomfort when the diaphragm 17 comes into contact with the human body.

Since nothing is pasted on the back side of the diaphragm 17 because it is used as a cushioning material for the human body, the case body 1 is exposed, so a protection plate is provided to protect the electro-mechanical vibration converter V. However, it is not necessarily necessary when the diaphragm 17 is placed on a member having cushioning properties.

It should be noted that examples of objects placed on a human body include cushions, chairs (including not only household chairs but also chairs for vehicles), sofas, beds, and the like.

Furthermore, as shown in FIG. 2, speakers 19 are attached to the portions of the diaphragm that correspond to both ears of the person.

Then, an audio signal that vibrates the eardrum is emitted from the speaker 19 toward the human body.

The loudspeaker 19 is connected directly to the loudspeaker terminal of the sound device, while the electro-mechanical vibration transducer V is connected to an amplifier containing a low-pass filter, which is connected to the loudspeaker terminal of the sound device.

This acoustic vibration element is laid along the cushioning material of the human body support.

In this way, the cushioning material prevents the diaphragm 17 from coming into direct contact with a rigid body such as a floor surface.

When using this element, lie down on the diaphragm 17 so that your ears are near the speaker 19.

In this state, when the coil 16 is energized with an audio signal that drives a speaker of an audio device through a low-pass filter, the magnetic interference between the magnetic force generated in the coil 16 and the magnetic force of the magnetic pole 10 causes the signal to be transmitted to the case via the damper 6. Main body 1
The yoke 8 supported by the yoke 8 and the case body 1 are displaced relative to each other, and a bodily vibration is generated.

This vibration is transmitted to the diaphragm 17 via the case body 1, the diaphragm 17 vibrates, and the vibration is transmitted to the human body.

At this time, the audio signal from the audio device is input to the speaker 19, and the speaker 19 emits sound waves that can be heard by the human ear.

The vibration of the diaphragm 17 is synchronized with the audio signal heard by the ears and is based on the audio signal in the bass range, so it is effective as a vibration when feeling deep bass. As the eardrum vibrates, the user feels the sound from the eardrum, and also feels the vibration of the diaphragm with his body, allowing him to sense deep bass and listen to music effectively.

The one shown in FIG. 3 is a seat for automobiles and other types in which a diaphragm 17 is installed.

Note that a more desirable vibration effect can be obtained by variously changing the material or thickness of the damper.

Further, the cutoff frequency of the low-pass filter varies depending on the sound source, but it is preferably about 150Hz.

In this case, when a person lowers his or her hips onto the diaphragm 17,
The load is dispersed and supported by the diaphragm 17 itself, and the cushioning material prevents the transducer V from coming into direct contact with the floor, etc. Therefore, the vibration of the diaphragm 17 is no longer suppressed, and it will not vibrate under any conditions. Become.

As described above, the present invention provides an electro-mechanical vibration transducer that has a structure in which a yoke is installed inside the case body so that the case body and the yoke can be relatively displaced, and the output is taken out from the case body. embedded in the diaphragm, and
A speaker was attached to this diaphragm, and this diaphragm was laid along the cushioning material of the human body mount.
Not only can you feel the sound with your ears, you can also feel the mechanical vibration with your body, and just by installing it on a commercially available human body device, you can create a small immersive sound space, and it has extremely economical value. It is something.

In addition, since it can be made thin as a whole, the user does not feel uncomfortable when using it.

Furthermore, it is effective not only for listening to music but also for medical purposes depending on the selection of music to be played.

Furthermore, when used in a car, there is no need to install a separate speaker, which is economical.

Furthermore, since the speaker is located close to the ear, the bass sound does not attenuate even when playing at a low volume, allowing the user to enjoy listening to music with a rich sense of bass.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the relationship between a diaphragm and an electro-mechanical vibration converter in the present invention. FIG. 2 is a perspective view of an electro-mechanical vibration converter and a speaker attached to a diaphragm. FIG. 3 is a perspective view showing the state of use. 1...Case body, 17...Diaphragm,
19...Speaker, ■...Electrical-mechanical vibration converter.

Claims (1)

[Claims] 1. An electro-mechanical vibration transducer that is housed in a single case and is driven by a low-frequency audio current is transmitted through the case body to provide good vibration, light weight, and rigidity, and to provide a cushion for the human body. installed on a diaphragm that can be laid along the material, and embedding the electro-mechanical vibration converter within the diaphragm;
An acoustic vibration element further comprising a speaker provided on the diaphragm.