JPH07112305B2 - Electric / mechanical vibration converter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric / mechanical vibration converter which receives a low-frequency current such as a voice signal to generate mechanical vibration.

[0002]

2. Description of the Related Art For example, a thread telephone vibrates a thread by a sound wave of a voice it speaks, and the vibration transmits the voice to the other party. The vibration direction of the yarn vibrating toward the other side at this time is hereinafter referred to as vibration in the sound propagation direction. The vibration transmitting member described below corresponds to the thread of the above-mentioned thread telephone. Therefore, when an electric / mechanical vibration converter is attached to a vibration transmission member provided on a human body placing object such as a rug or a bed pad to generate mechanical vibration in the electric / mechanical vibration converter, the generated vibration transmission member Will be transmitted to the human body placement object.

However, depending on how the vibration is applied to the vibration transmitting member, the human body placing object becomes a large-area diaphragm, and there is a technical problem that an unnecessary low-tone acoustic radiation is generated like a super-large woofer. To do. If the human body mounting object to which the electric / mechanical vibration converter is attached via the vibration transmitting member generates such unnecessary low-frequency sound radiation, the unnecessary low-frequency sound and the sound radiated from the speaker interfere with each other. Since the balance (sound) of the sound radiated from the speaker may be destroyed or cause noise, an electric / mechanical vibration converter does not produce sound even when vibration is transmitted to the human body mounting object. Is required. On the other hand, in order to improve the sensation to the human body together with the problem of the above sound, it is desired that the vibration transmission efficiency to the human body placement object is good.

Further, when the vibration is transmitted to the human body placing object using the electric / mechanical vibration converter, the vibration of the electric / mechanical vibration converter itself is directly applied to the human body through the vibration transmitting member to the electric / mechanical vibration. When the converter is attached, the vibration of the vibration transmission member vibrated by the electric / mechanical vibration converter may be excessively transmitted to the human body, which causes a feeling of strangeness. Therefore, it is desirable to mount the electric / mechanical vibration converter at a position where the vibration does not directly contact the human body. Furthermore, if the human body is located above the portion where the electric / mechanical vibration converter is attached, the electric / mechanical vibration converter will be pressed down by the human body, so it is possible to transmit the vibration to the human body or a human body placing object. There is a risk that the electromechanical vibration converter may be damaged depending on the influence or the load applied by the pressing force of the weight. For this reason, it is desirable that the vibration of the electric / mechanical vibration converter does not directly contact the human body at the mounting position of the electric / mechanical vibration converter in consideration of the discomfort.

Conventionally, the present inventor et al. Have conducted research on a sensory acoustic device which receives a signal from an acoustic device or the like, converts the signal into a mechanical vibration, and gives the vibration to a body together with a sound from a speaker or headphones. There are many applications related to this (Japanese Patent Publication No. 58-2517, Japanese Patent Publication No. 57).
-9272, JP-B-58-9640, JP-Utility Model 64-6622, JP-reference like JP Utility Model 58-4316).

The above-mentioned prior art electro-mechanical vibration converter is
Vibration is generated in the direction orthogonal to the surface of the disk-shaped electric / mechanical vibration converter, which is mounted horizontally on the vibration transmission member of the human body mount and orthogonal to the sound propagation direction in the human body mount. The vibration in the direction of vibration (hereinafter referred to as longitudinal vibration) was applied.

[0007]

[Problems to be Solved by the Invention]
The mechanical vibration converter is designed to generate vibration in the direction orthogonal to the plane of the disk-shaped electric / mechanical vibration converter for the purpose of applying longitudinal vibration (direction orthogonal to the sound propagation direction) to the human body mounting object. Therefore, mounting on a human body placing object, especially a thin and light object, is the same as that for mounting the human body placing object in the direction that gives longitudinal vibration, that is, the disk surface of the electric / mechanical vibration converter is attached to the human body placing object. I couldn't install it. In this way, when a vertical vibration is applied to the human body placing object, the human body placing object becomes a large diaphragm, which acts like a so-called super-large woofer to break the balance with the sound emitted from the speaker or cause noise. The problem occurs.

Further, in order to vertically vibrate the human body placing object, the electromechanical vibration converters must be arranged so as to be scattered over the entire plane of the human body placing object. Therefore, when a human body rides on a human body placing object, the human body may be positioned on the electric / mechanical vibration converter, in which case problems such as discomfort, deterioration of vibration transmission efficiency and damage occur. Further, when a vertical vibration is applied to the vibration transmitting member to vibrate the human body placing object, when the human body placing object is thin and light, such as a rug or a bed pad, or the vibration transmitting member is like a plastic net. When the weight is light, there is also a problem that the efficiency of vibration transmission is deteriorated due to the steffiness of the vibration transmission member.

It has been clarified by an experiment that the cause of the above-mentioned conventional problem is that the vibration transmitting member is longitudinally vibrated to vertically vibrate the human body placing object. Therefore, the inventor has developed an electric / mechanical vibration converter that applies vibration (hereinafter referred to as lateral vibration) to the vibration transmission member in the sound propagation direction.

The present invention has been made based on the above experiment, and the overall shape can be made thinner, and the mounting direction of the electromechanical vibration converter can be arbitrarily selected with respect to the vibration direction of the vibration transmitting member. To generate lateral vibration and to obtain high vibration transmission efficiency.
It is intended to provide a mechanical vibration converter.

[0011]

As a means for solving the above-mentioned problems, an electric / mechanical vibration converter according to the present invention comprises:
The coil is wound on the inner wall of the rectangular housing
Then, make a hole through the tube at the center of the rectangular yoke.
And forming a columnar portion that is inserted into the cylindrical portion on the yoke
Align and assemble the rectangular yoke and attach the magnet
The two yokes above are sandwiched to form a unitary body, and the lengthwise direction of the united body
There is a space on both sides in the direction of the axis of the columnar section.
The damper is placed, and the damper is placed in the housing.
It is characterized in that the body is provided so as to be swingable in the axial direction .

[0012]

Since the present invention has such a configuration, when a voice current from the audio device is applied to the coil, magnetic interference acts between the coil and the magnet (Fleming's left-hand rule).
Occurs, and the housing vibrates due to the mass of the integral body floatingly supported by the damper. And
A plurality of dampers use this integrated body in the axial direction of the column and the yoke.
Since it is supported on a plane depending on the longitudinal direction,
It is housed in a ging, and even if the flat surface is horizontal
The support is well balanced, and vibrations along flat surfaces are reliably generated.
To live.

[0013]

EXAMPLE An electric / mechanical vibration converter 1 according to the present invention is described below.
Will be described with reference to FIGS. 1 to 4. The housing 2 of the electric / mechanical vibration converter 1 is of a quadrilateral shape, and has an integral shape having two step portions 3 and 4 having a smaller diameter from the upper portion toward the bottom portion. The outer edge portions 7 and 8 of dampers 5 and 6 made of an elastic material are fixed to the two step portions 3 and 4. Inner edges 9 and 10 of the damper 5 extend horizontally toward the inside of the housing 2.

Next, the yoke 12 provided with the magnetized magnet 11 inside the housing 2 will be described. The yoke 12 is composed of a rectangular bottom plate yoke 13 having a columnar portion 13a in the center and a rectangular upper plate yoke 14 provided at the upper part. Two magnets 11 are fixed to the upper surface of the bottom plate yoke 13 with the columnar portion 13a interposed therebetween. Also, an upper plate yoke having a hole 14a in the center above the magnet 11.
14 is installed. The upper part of the columnar part 13a is fitted in the hole 14a.

The inner peripheral edge of the hole 14a of the upper plate yoke 14, the inner peripheral edge 11a of the magnet 11, and the outer peripheral edge 13b of the columnar portion 13a.
A magnetic air gap 15 is formed between and. As a result, the bottom plate yoke 13, the magnet 11, and the upper plate yoke 14 constitute a magnetic circuit having a gap 15.

The inner edge portion 9 of the damper 5 is integrally fixed to a step portion 16 formed by the outer end portion of the upper plate yoke 14 and the upper surface of the magnet 11 for floatingly supporting the yoke 12 in the housing 2. Further, the inner edge portion 10 of the damper 6 is integrally fixed to the step portion 17 formed by the outer end portion of the bottom plate yoke 13 and the lower surface of the magnet 11. The two dampers 5 and 6 allow the yoke 12 to move in the axial direction of the columnar portion,
Of the bottom plate yoke 13 and the upper plate yoke 14 that form the yoke 12.
It is swingably supported on a plane that intersects the longitudinal direction.
Since it can be accommodated in a flat housing, the flat surface is horizontal
Even so, the balance of horizontal support of the one body is good.

An opening 18 is formed on the upper surface of the housing 2, and a cylindrical portion 21 provided on a plate 19 around which a coil 20 is wound is fitted in the opening 18. As a result, the coil 20 is arranged in the gap 15. A low frequency current from an audio device (not shown) is applied to the coil 20. The coil 20 generates a magnetic force with a low frequency current such as a voice current which is an output signal of the audio device. The plate 19 having the tube portion 21 is integrally fixed to the housing 2.

Further, although the housing 2 is formed by one box as shown in FIG. 1 in this embodiment, it may have another structure, that is, the magnet 11,
Anything that can accommodate all of the yoke 12, the coil 20, and the like may be used.

The operation of this embodiment thus constructed will be described below. First, inside the housing 2 of the electromechanical vibration converter 1, the yoke 12 is formed by the two dampers 5 and 6.
The flatness of the surface where the axial direction of the columnar part and the longitudinal direction of the yoke intersect
It will vibrate on the surface. Therefore, the housing 2 is tilted sideways so that the upper surface is a side surface and the flat surface is attached to the surface of a human body placing object such as a rug or a bed pad. like this
Even if arranged, the load of the yoke 12 is applied to the two dampers 5 and 6.
It is more supported and the motion due to vibration is smoother. Electrical·
When the coil 20 of the mechanical vibration converter 1 receives a low-frequency current from the audio device, a magnetic interference action occurs between the coil 20 and the magnet 11, and the bottom plate yoke 13 and the upper plate yoke 14 are applied to the coil 20. Also, the integrated body of the magnet 11 vibrates. That is, the housing 2 vibrates along the surface of the human body placing object due to the mass of the integrated body of the bottom plate yoke 13, the upper plate yoke 14 and the magnet 11. As a result, lateral vibration is applied to the human body placing object.

As described above, by applying lateral vibration to the vibration transmitting member provided on the human body placing object, the vibration transmitting member (human body placing object) vibrates in the so-called sound propagation direction, which causes the human body placing. The mounted object itself does not look like a large diaphragm, but the vibration is transmitted only to an effective area, so that unnecessary bass acoustic radiation can be reduced.

Further, by giving the lateral vibration, the apparent rigidity becomes high even if the vibration transmitting member is thin and light, and for example, the greater the tension of the thread of the thread telephone, the better the sound transmission. Similarly, the vibration transmission efficiency can be increased. That is, when the human body placing object is light and thin such as a rug or a bed pad, or when the vibration transmitting member is light such as a plastic net, a lateral vibration is applied to cause the vibration direction. The stiffness (rigidity force) is equivalently kept high, and the vibration transmission efficiency is improved.

5 to 8 show a modification of the electromechanical vibration converter 1. The same members are designated by the same reference numerals, and detailed description thereof will be omitted. In this drawing, the mounting positions of the dampers 5, 6 on the yoke 12 in FIGS. 1 to 4 are changed to the lower surface of the bottom plate yoke 13 and the upper surface of the upper plate yoke 14, whereby the yoke 12 having the magnet 11 floats. I will support it. In these structures, the yoke 12 including the magnet 11 vibrates due to the magnetic interference action (Fleming's left-hand rule) between the coil 20 and the magnet 11.

Next, a mode of use of the electromechanical vibration converter 1 of the above embodiment will be described as an example. 9 and 10 show a net 22 which is a vibration transmitting member and a cushion material 23 which surrounds the net 22.
The electric / mechanical vibration converter 1 is attached to a thin rug 24, which is a human body placing object, and the electric / mechanical vibration converter 1 has almost the same thickness as the rug 24. Since the vibration of the electric / mechanical vibration converter 1 is generated in the direction orthogonal to the upper surface of the housing 2, the electric / mechanical vibration converter 1 is attached to the edge of the rug 24 with its short side standing. As a result, a horizontal vibration is applied to the net 22 so that the human body sitting on the rug 24 can experience the vibration (see FIG. 10).

By thus applying the lateral vibration to the net 22, the rug 24 does not vertically vibrate and does not act like a woofer. As a result, it is possible to drastically reduce unnecessary low-tone acoustic radiation, and it is possible to approach an ideal state in which no sound is produced even when the human body placement object vibrates laterally. Further, in this way, since the electric / mechanical vibration converter 1 emits the lateral vibration by radiating the short side to the edge of the rug 24, the lateral vibration propagates to the entire rug 24 and the electric / mechanical vibration is applied to the human body. The converter 1 is not pushed, and therefore the electric / mechanical vibration converter 1 is not damaged without feeling uncomfortable.

11 to 13 show the structure of FIG. 9, FIG. 11 is a plan view with a part cut away, and FIG. 12 is a sectional view taken along the line D--D of FIG. Further, FIG. 13 shows an enlarged sectional view of a portion indicated by an arrow E in FIG.

FIGS. 14 and 15 show a rug 24 having a large area with the electromechanical vibration converter 1 mounted on both ends thereof. In this case, like the one shown in FIG. There is no action and the vibration transmission efficiency is also improved. Further, since the electric / mechanical vibration converter 1 is embedded in the edge portion of the rug 24, it is not pushed by the human body, and the discomfort and damage caused thereby are eliminated.

FIGS. 15 and 16 show an electric / mechanical vibration converter 1 at a substantially middle portion of a rug 25 which is a thick human body object.
It shows the one that is equipped with. This rug 25 has a U-shaped intermediate member 28, which is a continuous vibration transmitting member having high rigidity, disposed between an upper cloth 26 and a lower cloth 27. This rug 25
The human body standing upright receives a lateral vibration sensation as shown in FIG. 17 due to the lateral vibration applied to the intermediate member 28. Also in this case, similarly to the one shown in FIG. 9, it does not act like a woofer and the vibration transmission efficiency is good. Furthermore, since it is not pushed by the human body, there is no sense of discomfort and damage.

What is shown in FIGS. 18 and 19 is also FIG. 16 and FIG.
It is substantially the same as that shown in FIG. 17, except that the electric / mechanical vibration converter 1 is attached near the edge of the rug 25. The lateral vibration is applied as shown in FIG. Also in this case, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person, so that there is no sense of discomfort or damage.

FIGS. 20 to 23 show the case where the electric / mechanical vibration converter 1 is applied to a floor 29 for aerobics of a fitness club which is a human body placing object and a vibration transmitting member. Is a leg and 31 is an insulator. In the case of this embodiment, when the electromechanical vibration converter 1 operates, lateral vibration as shown by an arrow in FIG. 21 is obtained. Also in this case, as in the case shown in FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and the floor 29
Since it is hard, the electric / mechanical vibration converter 1 is not pushed by the human body, so that there is no sense of discomfort or damage.

24 and 25 show an application example to the bed 32, in which the electro-mechanical vibration converter 1 is attached to both side edges of a net 33A which is a vibration transmitting member, and a mat 33 which is a human body placing object. Is placed on the center of the mattress 34 of the bed 32. In this case, the vibration shown by the arrow in FIG. 25 can be obtained. Also in this case, as in the case shown in FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person.
There is no feeling of discomfort or damage.

26 and 27 show an example in which the electric / mechanical vibration converter 1 is attached to a core material 32A which is a vibration transmission member and incorporated in a bed 32 which is a human body placement object. As shown in the figure, the electromechanical vibration converter 1 is incorporated in the waist of a lying person. Since the bed 32 has a spring structure, lateral vibration is facilitated, and since the bed 32 is driven on the upper surface of the spring assembly structure, there is no discomfort and it is easy to assemble. In this case, the vibration will be the vibration shown by the arrow in FIG. The electric / mechanical vibration converter 1 can be attached to the side of the bed 32 at the waist or to the side of the foot. When it is attached to the foot side, a gentle sensational acoustic vibration is obtained from the foot side, which is effective for insomnia. Also in this case, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person, so that there is no sense of discomfort or damage.

28 and 29 show a vibration transmitting member 36A laid on a nap bed 36, which is a human body placed in the cab 35 of a large truck, and an electric / mechanical vibration converter of the present invention. 1 is applied. In this case electricity
The mechanical vibration converter 1 is installed on the foot side, and vibration as indicated by an arrow in FIG. 29 is applied. In this case as well, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by the human body, so that there is no sense of discomfort or damage.

FIG. 30 shows the case where the mat 38 used in the bath 37 is applied. In this case, the electric / mechanical vibration converter 1 is housed in the mat 38 in consideration of waterproofness, and a voice current is passed through it. Then, the vibration shown by the arrow in FIG. 31 is obtained. Also in this case, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person, so that there is no sense of discomfort or damage.

32 to 34 show an electric / mechanical vibration converter 1 housed in a toilet rug 39.
In this case, the electric / mechanical vibration converter 1 is attached to the net 40 in the rug 39 so as to apply horizontal vibration to the user's foot as shown in FIG. Figure 33 and Figure 34
Reference numeral 41 in FIG. 1 denotes a speaker, which is mounted on the wall in a variable angle. In this case as well, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and since it is not pushed by a person, there is no sense of discomfort or damage.

35 to 37 show the electric / mechanical vibration converter 1 of the present invention incorporated in the footrest plate 42 of a person sitting on an office chair. There is a notch 43 formed in a part of the notch 43, and the notch 43 is engaged with the leg portion 44 of the chair. Also in this case, as in the case of FIG. 9, it does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person, so that there is no sense of discomfort or damage.

38 and 39 show a case where the electromechanical vibration converter 1 according to the present invention is applied to the sofa 45. In this case, lateral vibration is applied to the seat portion 46 of the sofa 45. Also in this case, similar to that shown in FIG.
It does not act like a woofer, the vibration transmission efficiency is improved, and it is not pushed by a person, so there is no sense of discomfort or damage.

[0037]

As described above, the present invention has a rectangular shape.
You can flatten the housing by using a yoke.
And place the housing with the flat surface horizontal.
Damper supports the yoke in a stable state when
Therefore, attach a flat surface to a thin rug and attach it to vibrate.
You can At this time, the inner yoke becomes flat.
Since it will vibrate along it, it will give lateral vibration to a thin rug or the like. Also, it gives lateral vibration to thin rugs.
This eliminates vibration in the direction perpendicular to the large area surface.
Therefore, it is possible to prevent low-frequency sound emission from the surface ,
The balance with the sound emitted from the speaker can be maintained.

As described above, since the lateral vibration can be applied to the human body placing object by the electric / mechanical vibration converter, even if the electric / mechanical vibration transducer is attached to the edge of the human body placing object, the lateral vibration is applied to the entire human body placing object. It is possible to mount the electric / mechanical vibration converter while avoiding the position where the human body object is seated or lying down while being transmitted. Therefore, the user does not feel uncomfortable and there is no fear that the electric / mechanical vibration converter is pressed by the user and damaged. Further, since lateral vibration is applied to the vibration transmitting member, the vibration transmitting efficiency is improved.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an electric / mechanical vibration converter according to the present invention.

FIG. 2 is a schematic top view of that of FIG.

FIG. 3 is a schematic bottom view of the one shown in FIG.

4 is a schematic side view of that of FIG. 1. FIG.

FIG. 5 is a schematic sectional view showing a modification of the electric / mechanical vibration converter.

FIG. 6 is a schematic top view of that of FIG.

FIG. 7 is a schematic view taken along the line AA of FIG.

FIG. 8 is a schematic side view of that of FIG.

FIG. 9 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided in a rug.

10 is a side view of that of FIG. 9. FIG.

FIG. 11 is a plan view showing a state where the electric / mechanical vibration converter is attached by cutting out a part of FIG. 9;

12 is a cross-sectional view taken along the line DD of FIG.

13 is an enlarged view of a portion indicated by an arrow E in FIG.

FIG. 14 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is attached to both ends of a rug having a large area.

FIG. 15 is a side view of that of FIG.

FIG. 16 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided in a thick rug.

FIG. 17 is a side view showing a state in which the user stands up on the one shown in FIG. 16.

FIG. 18 shows an electric / mechanical vibration converter according to the present invention.
It is a perspective view which shows the example provided in the rug of a larger area than the thing.

FIG. 19 is a side view of that of FIG.

FIG. 20 is a perspective view showing an example in which the electric / mechanical vibration converter according to the present invention is applied to an aerobic floor.

21 is a front view of that of FIG. 20. FIG.

22 is a plan view of that of FIG. 20. FIG.

23 is a side view of that of FIG. 20. FIG.

FIG. 24 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to a bed.

25 is a plan view of that of FIG. 24. FIG.

FIG. 26 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is incorporated in a bed.

27 is a plan view of that of FIG. 26. FIG.

FIG. 28 is a perspective view showing an example in which the electric / mechanical vibration converter according to the present invention is applied to a nap bed in the cab of a large truck.

29 is a side view of that of FIG. 28. FIG.

FIG. 30 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to a mat used in a bathtub.

FIG. 31 is a schematic diagram showing a cross section of the bath portion of FIG. 30.

FIG. 32 is a perspective view showing an example in which the electric / mechanical vibration converter according to the present invention is applied to a rug for a toilet.

33 is a plan view of that of FIG. 32. FIG.

34 is a side view showing a usage state of the thing of FIG. 32. FIG.

FIG. 35 is a perspective view showing an example in which the electric / mechanical vibration converter according to the present invention is incorporated in a footrest plate of a person sitting on an office chair.

36 is a side view showing a partial cross-section of the main part of FIG. 35. FIG.

FIG. 37 is a perspective view showing a state where the footrest plate in FIG. 35 is separated from the chair.

FIG. 38 is a perspective view showing a case where the electric / mechanical vibration converter according to the present invention is applied to a sofa.

39 is a side view of that of FIG. 38. FIG.

[Explanation of symbols]

 1 Electro-mechanical vibration converter 2 Housing 5 Damper 6 Damper 11 Magnet 12 Yoke 13a Columnar part 14 Upper plate yoke 15 Void 18 Opening 20 Coil 21 Cylindrical part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References: 1-135933 (JP, U): 2-13385 (JP, U): 61-57790 (JP, U): 1-flat 93893 (JP, U) Actual Kohei 2-8043 (JP, Y2)

Claims (1)

[Claims] 1. A coil is wound around the inner wall of a rectangular housing.
Of the rectangular yaw.
A pillar that is formed in the center of the cylinder and that is inserted into the yoke through the yoke.
It is common to align and assemble rectangular yokes with
The magnet is sandwiched between the above two yokes to form a unitary body.
On both sides in the longitudinal direction of the unitary body and in the axial direction of the columnar section.
Inside the housing, place dampers at a distance
In the electric / mechanical vibration converter, the integrated body is provided so as to be swingable in the axial direction .