JPS6033662Y2 - 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 decreases from 150 Hz, the proportion of the vibration of the eardrum that causes the sound to be felt not only with the ears but also as sound pressure in the air increases.

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 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 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. This chair is characterized in that it is configured so that a mechanism for vibrating the chair can be incorporated, so that deep bass sounds can be easily felt in commercially available chairs.

Embodiments of the present invention will be described below 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 electro-mechanical vibration converter is shown.
is composed of frames 2 and 3 having a dish-shaped cross section, and a horizontally extending plate-shaped flange 5 is integrally provided at the opening periphery of the frame 3, and the frame 2 has a thick edge. 2a, and a flat part 4 facing the flange part 5 is provided inside the edge part 2a.
is formed.

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 peripheral 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 housed inside the case body 4 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 thereon.A top plate 11 is attached to the magnetic pole 10, and the inner edge 11a of the top plate 11 and the bottom plate 9 A magnetic annular air gap 12 is formed between the columnar part 9a', and the air gap 1 is formed by the bottom plate 9, the magnetic pole 10, and the top plate 11.
2 is constructed.

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 case body 1 and the yoke 8, and the damper 6 allows the case body 1 and the yoke 8 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 step portion 13 by the magnetic pole 10 and the magnetic pole 10, the structure for attaching the yoke 8 and the damper 6 is not limited to this.

Any structure may be used as long as the damper 6 can be arranged within a plane included in the gap 12 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 vertical width of the gap 12 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 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 15 attached to the plate 15a.
The plate 15a 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 15a.
is arranged within the cavity 12.

Next, the relationship between the electro-mechanical vibration converter and the diaphragm described above will be explained with reference to FIGS. 3 to 5.

FIG. 2 shows the diaphragm 17 shown in FIGS. 3 to 5 in which an electro-mechanical vibration converter (1) and a cushioning material 20 (to be described later) are attached.

Reference numeral 17 denotes a diaphragm made of synthetic resin that has good vibration, is lightweight, and has rigidity.

This diaphragm 17 is formed into a hollow shape by blow molding, and is placed close to the side opposite to the chair seat 18 and the side opposite to the chair back to mount the electro-mechanical vibration converter ■. A side 17a as a first vibration wall that transmits vibration to the chair seat 18 to the step 19a forming the mounting hole 19 of the vibration plate 17 and the chair. A back surface 17c serving as a second vibrating wall that transmits vibrations to the back support portion 18b is integrally formed.

Further, near both sides of this diaphragm 17 and approximately in the middle thereof, there are concave grooves 17 recessed inwardly between the other hollow walls.
e is formed in the vertical direction of the figure.

This concave shape 117e allows the side 17a of the diaphragm 17 to fit along the user's back when the diaphragm 17 is placed in contact with the seat 18a of the chair and the user places the diaphragm 17 on the user's back. This is to make it flexible so as to be able to bend, and to reinforce it so that it can withstand external bending that is different from the bending described above.

The diaphragm 17 has an end surface 17'a on the side 17a facing the seat 18 of the chair directly connected to the seat 18a of the chair, and its back surface 17'a facing the seat 18 of the chair.
c is placed at the intersection of the seat part 18a and the back part 18b of the chair in a state where it is in direct contact with the back part 18b of the chair, and directly transmits vibrations from the end surface 17a' to the seat part 18a.

In addition, by making the diaphragm 17 gradually thinner toward the other end surface 17b as shown in the figure, the corners of the diaphragm 17 at the other end 17b do not hit the user's back, thereby reducing discomfort. You can stop giving.

Although the molded material on the other end side 17b is made thinner than the end surface 17a', it is not necessarily limited to this, and the diaphragm 17
may be a flat plate with the same molded meat.

The diaphragm 17 has an end surface 17a facing the chair seat 18.
' and a mounting hole 1 that is close to the back surface 17c facing the chair back part 18b and a part of which opens toward the back surface 17c side.
9 is provided, and the edge 2a of the case body 1 of the electro-mechanical vibration converter (■) is installed and fixed on the stepped portion 19a provided on the periphery of the mounting hole 19. In order to improve this, a portion of the diaphragm is buried in the diaphragm 17 with a part thereof exposed on the back surface 17c side of the diaphragm 17.

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

The material of the diaphragm 17 is polyethylene, acrylonitrile butadiene styrene resin (ABS resin),
Acrylonitrile/styrene resin (AS resin), polypropylene (PS resin), polyphenylene oxide (p
It may be a case-shaped one made of relatively rigid synthetic resin such as PO resin) or vinyl chloride resin, and any material that vibrates well in the low frequency range and is lightweight may be used.

Furthermore, the diaphragm 17 has an end surface 17a' facing the chair seat 18a and a back surface 17c facing the chair back 18b.
A cushioning material 20 such as soft foamed polyethylene is attached to the front side 17d of the diaphragm 17, excluding the diaphragm 17, that is, the side that contacts the back of the human body, in order to improve sitting comfort.
(see figure).

21 is a cover for aesthetically processing the appearance.

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 (1) 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.

Moreover, the number of electro-mechanical vibration converters V built into the diaphragm 7 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 17c of the diaphragm 17
The mechanical vibration transducer V 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 are displaced relative to each other, and a bodily-sensible vibration is generated.

This vibration is transmitted to the diaphragm 17 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 mounted 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 preferably 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.

Figures 7 to 9 show a diaphragm 17 formed by vacuum forming.
In this case, the same parts as those in the above embodiment are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 6 shows a state in which the electro-mechanical vibration converter V and the buffer material 20 are attached to the diaphragm 17 shown in FIGS. 7 to 9.

In this device, the diaphragm 17 is a plate-shaped vibrating member made of synthetic resin such as vinyl chloride resin as in the previous embodiment, vibrates well in the low frequency range, and is lightweight.

The diaphragm 17 is provided with a stepped portion 1 as a mounting wall for the electro-mechanical vibration converter V, which is placed close to the side opposite to the chair seat 18 and the side opposite to the chair back, as in the previous embodiment.
A mounting hole 19 having a diameter 9a, a side 17a that transmits vibrations to the chair seat 18, and a back surface 17c that transmits vibrations to the chair back 18b are each integrally formed.

Further, on the wall surface of the plate-shaped diaphragm 17, a plurality of concave portions 117e are formed in the vertical direction in the figure so as to protrude toward the chair seat 18, and the diaphragm 17 is bent like the diaphragm 17 of the previous embodiment. This is to make it flexible and to reinforce it so that it can withstand bending from the top and bottom directions of the figure.

In this way, the diaphragm 17 formed by vacuum forming is
Similar to the diaphragm 17 of the above embodiment, when the chair is opened, the end surface 17a' of the side 17a facing the seat 18 of the chair is in direct contact with the seat 18a of the chair, and the back surface 17c is in direct contact with the backrest 18b of the chair. It is arranged at the intersection of the seat part 18a and the back rest part 18b, and directly transmits vibrations from the end surface 17a' to the seat part 18a.

In addition, as shown in the figure, by making the diaphragm 17 gradually thinner toward the other end side 17b, the corners of the diaphragm 17 at the other end side 17b will not hit the user's back, resulting in a problem. It can be done without giving pleasure.

The materials for the diaphragm 17 include polyethylene, acrylonitrile-butadiene-styrene resin (ABsIf1 resin), acrylonitrile-styrene resin (AS resin), polypropylene (PS resin), polyphenylene oxide (PPO resin), as in the previous embodiment. Of course, vinyl chloride resin or the like may also be used.

Hereinafter, in this embodiment, the diaphragm 17 of the above embodiment will be described.
Since it is the same as that, detailed explanation will be omitted.

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. The device is embedded in a diaphragm formed by blow molding or vacuum forming, and this diaphragm can be placed at the intersection of the seat and back of the chair, so it can be used in commercially available chairs. Therefore, the object placed on the human body can be used as a device for sensing deep bass sounds, and is extremely economically valuable.

In addition, since it can be made thin as a whole and can be attached to a chair by using the intersection between the back and seat of the chair, it does not give the user a sense of discomfort when using it. .

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

Furthermore, the electro-mechanical vibration converter is installed 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.

In addition, the diaphragm of this embodiment can be molded from synthetic resin material such as plastic by blow molding or vacuum forming, so it can be mass-produced by simply preparing a molding material with a shape that corresponds to the diaphragm in advance. In addition, since it can be molded from a member made of a relatively inexpensive synthetic resin material such as plastic, the cost of the acoustic vibration device can be reduced.

In addition, since the diaphragm produced by this molding method is hollow or plate-shaped, the vibration from the electro-mechanical vibration converter and the thin wall surface constituting the diaphragm are well synchronized, and the diaphragm is Because the vibrations from the chair to the entire chair are well transmitted,
The vibrations that a person receives from the chair and the vibrations that the person receives directly from the diaphragm allow the person to feel the bodily vibrations throughout the body even better.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the electro-mechanical vibration converter used in the present invention, FIG. 2 is a sectional view showing the electro-mechanical vibration converter and the cushioning material attached to the part shown by the opening in FIG. Figures 3A to 3C show an embodiment of the diaphragm of the present invention before an electro-mechanical vibration converter is attached. Figure 3C is a plan view, Figure 4A to 2 are front views of Figure 3A to Figure 3A, Figure 4A is a front view, and Figure 4A is a front view of Figure 3C. The opening in Figure 4 is a bottom view, Figure 4C is a sectional view taken along line ■-■ in Figure 4A, Figure 42 is a sectional view taken along line IV-IV in Figure 4A, and Figure 5 is a sectional view taken along line IV-IV in Figure 4A. Figure 4 is a cross-sectional view of the state in which the electro-mechanical vibration converter is installed in the mounting hole in Figure 2 and the shock absorber is attached to the front of the diaphragm. 7A to 7C are cross-sectional views showing the state in which the container and the cushioning material are attached, showing other embodiments of the diaphragm of the present invention in the same parts as in FIGS. Figure 7 A is a front view, Figure 7 is a sectional view taken along the line ■-■ in Figure 7 A, Figure 7 C is a plan view, and Figure 8 A to 2 are front views of Figure 7 A to C. Figure 8 A is the front view, Figure 8 opening is the bottom view, Figure 8
Figure C is a sectional view taken along the line ■-■ in Figure 8A, Figure 82 is a sectional view taken along the line ■-■ in Figure 8A, and Figure 9 is a sectional view taken along the line ■-■ in Figure 8A. FIG. 3 is a sectional view showing a state in which a mechanical vibration transducer is attached and a cushioning material is attached to the front surface of the diaphragm. 1...Case body, 17...Diaphragm,
17a'...End face of diaphragm, 18a...
・Seat part, 18b... Back part, 20...
Cushioning material, ■・・・Electrical-mechanical vibration converter.

Claims (1)

[Scope of utility model registration request] To mount an electro-mechanical vibration converter having a mounting wall close to the side facing the chair seat and the side facing the chair back of a vibrating member made of a synthetic resin material that vibrates well, is lightweight, and has rigidity. A first vibrating wall that transmits vibrations to the chair seat and a second vibrating wall that transmits vibrations to the chair back are attached to the mounting wall that forms the cavity of the diaphragm. An acoustic vibration device characterized by being installed in series.