JPS584316Y2 - acoustic vibration device - Google Patents

Description

[Detailed description of the invention] This invention is designed to generate bodily sensation vibrations using audio signals in the bass range in order to make people feel deep bass sounds through the vibration of the eardrum and bodily sensation vibrations. This invention relates to an acoustic vibration device that allows users to feel deep bass sounds from a chair.

As the frequency of sound increases from 150 to f, not only do we hear the sound with our ears due to the vibration of the eardrum, but we also become more likely to feel the air vibration as sound pressure with our bodies.

So-called heavy bass sounds are air vibrations whose sound pressure is felt by the skin and body outside the ear plates, and when the vibrations felt by the body and the auditory sense overlap, people feel true deep bass sounds. .

Therefore, in order to ideally feel deep bass,
2. Description of the Related Art Chairs have been developed that generate vibrations that can be felt by the body in synchronization with an audio signal that drives a speaker or the like.

However, in the past, the structure of the chair used for acoustics was different from that of commercially available chairs, and therefore the chair had to be purchased separately.

When a person sits on a chair, a space is formed between the body and the chair at the intersection of the seat and back of the chair, and the present invention utilizes this space to The chair is characterized in that it is configured to incorporate a mechanism that vibrates the sound, so that heavy bass sounds can be easily felt in commercially available chairs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the structure of the electro-mechanical vibration converter (2) in the present invention will be explained.

In FIG. 1, a case body 1 of an electromechanical vibration transducer is composed of frames 2 and 3 each having a dish-shaped cross section, and a plate-shaped flange portion 5 that extends horizontally is integrated with the opening periphery of the frame 3. The frame 2 is provided with a thick edge 2a,
A flat portion 4 facing the flange portion 5 is formed inside the edge portion 2a.

The frame 3 is assembled into the edge 2a of the frame 2, and is assembled by butting the flange portion 5 and the flat portion 4 against each other with the flange portion 5 and flat portion 4 facing each other.

An outer peripheral edge 6a of an annular damper 6 made of an elastic material is sandwiched between the flat part 4 of the frame 2 and the flange part 5 of the frame 3, and the inner edge 6b of the damper 6 is located inside the frames 2 and 3. extends horizontally to

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

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.
A magnetic annular air gap 12 is formed between the inner edge 11a of the bottom plate 9 and the columnar part ga/ of the bottom plate 9, and a magnetic circuit having the air gap 12 is formed by the bottom plate 9, the magnetic pole 10, and the top plate 11. ing.

In order to support the yoke 8 in the case body 1 at a position including the air gap 12, the inner circumferential edge 6b of the damper 6 is integrally fixed to a step 13 formed by the outer edge of the top plate 11 and the end face of the magnetic pole 10. 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 structure of the attachment of the yoke 8 and the damper 6 is not limited to this. Any structure may be used as long as it can be arranged within a plane including the case body 1 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 1 is perpendicular to the axis of the gap 12 (the axis extending in the vertical direction in FIG. 1) and passes through the center of the medium length of the gap 12 in the vertical direction in FIG.
It is most desirable for the yoke 8 to be supported by the damper 6 on the case body 1 at a position on a plane including 2.

Furthermore, the frames 2 and 3 are not limited to having a dish-shaped cross section; if the frames 2 and 3 are configured to have a space that allows movement of the yoke 8 inside the case body 1, Any cross-sectional shape may be used.

An opening 14 is formed in the center of the frame 3, and the opening 14
A cylindrical coil frame 15 attached to the plate N5a is shown in FIG.
are fitted, the plate i5a is integrally fixed to the edge 2a of the frame 2, and the coil 16 wound around the coil frame 15 is fixed to the plate i5a.
is arranged within the cavity 12.

Next, the relationship between the electro-mechanical vibration converter and the diaphragm described above will be explained based on FIGS. 2 to 5.

Reference numeral 17 denotes a flat diaphragm. The diaphragm 17 is made of a foam material such as polyethylene foam with a foaming degree of 15 to 20 times, and vibrates well in the low frequency range and is lightweight.

The end surface 17a of the side 17a facing the seat 18 of the chair is directly tangent to the seat 18a of the chair, and the back surface 17c of the diaphragm 17 is tangent directly to the backrest 18b of the chair in a rainbow state. 18a and the back rest part 18b, and the end face 1
The vibration is directly transmitted from 7a' to the seat 18a, and the back surface 1
Vibrations are directly transmitted from 7C to the back rest 18b.

In addition, by making the diaphragm 17 gradually thinner toward the other end side 17b as shown in the figure, the corners of the diaphragm 17 at the other end side 17b will not hit the user's back, causing discomfort. It is possible to eliminate the need to give

Note that although the wall thickness of the other end side 17b is made thinner than that of the end face 17a' side, it is not necessarily limited to this, and the diaphragm 1
7 may be a flat plate having the same wall thickness.

The diaphragm 17 has an end surface 17a facing the chair seat 1B.
A mounting hole 19 is provided that is partially open toward the back surface 17C side of the back surface 17C facing the chair back portion 18b, and a stepped portion 19a provided around the periphery of the mounting hole 19. The edge 2a of the case body 1 of the electro-mechanical vibration converter ■ is placed and fixed on the holder, and a part of the electro-mechanical vibration converter ■ is attached to the back surface 17C of the diaphragm 17 in order to improve heat dissipation efficiency.
It is buried in the diaphragm 17 in a state where it is exposed to the side.

In the embodiment, the case 3 side is exposed to the rear surface 17C side, but the case 2 side may be exposed.

Note that the diaphragm 1T is not limited to a foam material such as foamed polyethylene, but may also be a case-like material made of wood or other synthetic resin, as long as it vibrates well in the low frequency range and is lightweight. Either one is fine.

Furthermore, the diaphragm 17 has a surface 17a' facing the chair seat 18a and a back surface 17C facing the chair back rest gi8b. A cushioning material 20 such as soft polyethylene foam is attached to improve the stability.

21 is a cover for aesthetically processing the appearance.

Reference numeral 22 designates cushioning materials assembled on the left and right sides of the diaphragm 17.

Therefore, when two people sit on a chair and touch the diaphragm 17, the two people come into contact with the diaphragm 17 placed on the chair via the cushioning material 20.

24 is a connector for connecting the electro-mechanical vibration converter V to an amplifier having a built-in low-pass filter.

In addition, it may be a main body, or the two may be separate bodies, and the backrest part 18b1 seat part 18
As long as a is made of a material that easily transmits vibrations, such as urethane foam or sponge, it can be used for any chair.

Further, the number of electro-mechanical vibration converters (2) built into the diaphragm 17 may be any number.

In this device, the end surface 17a' of the diaphragm 17 is in direct contact with the seat 18a, and the back surface 17c of the diaphragm 17 is in direct contact with the backrest 18b, at the intersection of the seat 18a and the backrest 18b of the chair. Placed.

When the user sits down on the chair and touches the device of the present invention, the end surface 17a' of the diaphragm 17 is strongly pressed against the seat 18a, and at the same time the back surface 17c1 of the diaphragm 17 is electrically connected.
The mechanical vibration transducer (2) is strongly pressed against the back surface portion 18b, and the two are in close contact with each other.

In this state, when the coil 16 is energized with an audio signal that drives a speaker of an audio device or the like through an amplifier with a built-in low-pass filter, the damper 6 is activated by the magnetic interference between the magnetic force generated in the coil 16 and the magnetic force of the magnetic pole 10. The yoke 8 supported by the case body 1 via the yoke 8 and the case body 1 and 03 are displaced relative to each other, causing a bodily sensation of vibration.

This vibration is transmitted to the diaphragm 1T via the case body 1, the diaphragm 17 vibrates, this vibration is transmitted to the seat portion 18a1 and the back rest 18b, the entire chair vibrates, and the human body sitting on the chair vibrates. At the same time, the vibrations are also transmitted directly from the diaphragm 17 to the back of the human body.

In this case, since the electro-mechanical vibration converter (2) is installed close to the end face 17a' side and the back side 17C, it goes without saying that vibrations are transmitted from the back side 17C of the diaphragm 17 to the back rest 18b. Vibrations are effectively transmitted from the end surface 17a' of the plate 17 to the seat 18a, causing the entire chair to vibrate.

Therefore, the difference in strength between the vibrations that the person receives from the chair and the vibrations that the person receives directly from the diaphragm 17 is reduced, and the vibrations are no longer felt in one part of the human body, but in the whole body.

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.

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 preferable that the cutoff frequency varies by about 150 Hz.

Note that since the person listening to music through the speakers is far away from the speakers and there is a distance between them and the converter (2), it would be effective to connect a delay circuit.

As described above, the present invention has a structure in which an electro-mechanical vibration converter 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. is embedded in the diaphragm, and this diaphragm can be placed at the intersection of the seat and back of the chair, so just by using it on a commercially available chair, you can make the object placed on the human body produce heavy bass. It can be used as a tool to sense the situation, and is extremely economically valuable.

In addition, the overall design is thin and slim, and it can be attached to a chair using the intersection of the back and seat of the chair, so it does not give the user any discomfort when using it. It is.

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

Furthermore, the electro-mechanical vibration converter is mounted close to the side of the diaphragm facing the chair seat, so that the side of the diaphragm facing the chair seat and the back side of the diaphragm are in direct contact with the chair. The vibration of the diaphragm is weakened and is not transmitted to the seat and back of the chair, and the vibration of the diaphragm is reliably transmitted to the chair, making it possible to reliably vibrate the seat and back of the chair. can.

As a result, the difference in strength between the vibrations directly felt from the front of the diaphragm and the vibrations felt from the chair is reduced, and the vibrations are no longer felt locally, but are felt throughout the body, resulting in deep bass. I can feel it well.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an electro-mechanical converter used in the present invention. FIG. 2 is a sectional view taken along the line ■--■ in FIG. 3. FIG. 3 is a front view showing an embodiment of the present invention. FIG. 4 is a sectional view taken along the line IV--IV in FIG. 3. FIG. 5 is a perspective view showing an example of the cover. 1...Case body, 17...Diaphragm,
173'...End face of diaphragm, 18a...
・Seat portion, 18b backrest portion, 20... cushioning material, ■・
...Electro-mechanical vibration converter.

Claims (1)

[Scope of utility model registration request] A diaphragm with good vibration, light weight, and rigidity is placed close to the side facing the chair seat and the side facing the chair back, and inside the diaphragm, a diaphragm is driven by an audio current in the bass range and is connected to the case body. An electro-mechanical vibration converter that outputs vibration without sound is attached through its case body, and the side of the diaphragm opposite to the chair seat is attached to the seat of the chair, and the diaphragm is attached to the chair back of the diaphragm. An acoustic vibration device characterized in that the opposite sides of the device are brought into contact with the back of a chair.