JPH0761194B2 - 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 transmitting member provided on a human body object such as a rug or a bed, and mechanical vibration is generated in the electric / mechanical vibration converter, the generated vibration is transmitted. It is transmitted to the human body placement object via the member.

However, depending on how the vibration is applied to the vibration transmitting member, the human body placing object becomes a diaphragm having a large area and becomes a super-large woofer, and there is a technical problem that unnecessary low-tone acoustic radiation is generated. . 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. Therefore, the balance (sound) of the sound radiated from the speaker may be destroyed or it may cause noise. Therefore, an electric / mechanical vibration converter that does not produce sound even when vibration is transmitted to a human body mounting object is required. To be done. 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 by using the electric / mechanical vibration converter, the vibration of the electric / mechanical vibration converter itself is vibrated when the electric / mechanical vibration converter is attached at a position where it directly hits the human body. May be transmitted to the human body excessively, causing discomfort. Therefore, it is desirable to mount the electric / mechanical vibration converter at a position where vibration does not directly contact the human body. Furthermore, if the human body is located above the part where the electric / mechanical vibration converter is attached, the electric / mechanical vibration converter will be pressed down by the human body, affecting the vibration transmission to the human body or the human body mounting object. Depending on the load applied by applying weight or pushing the weight,
The mechanical vibration converter may be damaged. For this reason, it is desired that the mounting position of the electric / mechanical vibration converter is such that the vibration of the electric / mechanical vibration converter does not directly contact the human body 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 these (Japanese Patent Publication No. 58-2517, Japanese Patent Publication No. 5).
7-9272, JP-B-58-9640, JP-Utility Model 64-6622, JP-reference like Japanese Utility Model 58.4316 Patent Publication No. <br/> Paper).

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. This is mounted horizontally on the vibration transmission member of the human body placement object and the sound is propagated to the human body placement object (vibration transmission member). Vibration in a direction orthogonal to the direction (hereinafter, vibration in this vibration direction is referred to as longitudinal vibration) was given.

[0007]

[Problems to be Solved by the Invention]
The mechanical vibration converter vibrates in the direction perpendicular to the plane of the disk-shaped electric / mechanical vibration converter for the purpose of applying vertical vibration (vibration in the direction orthogonal to the sound propagation direction to the vibration transmitting member) to the human body mounting object. Since it was made to occur, a human body placement object,
Especially when it is attached to a thin and light object, it could not be installed as it is except in the direction of giving vertical vibration to the human body mounting object, that is, by mounting the disk surface of the electric / mechanical vibration converter along with the human body mounting object. . When vertical vibration is applied to the human body placing object in this manner, the human body placing object becomes a large vibration plate, which acts like a so-called super-large woofer and may cause imbalance in the sound emitted from the speaker or cause noise. The problem occurred.

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, if the human body placing object is a thin and light object such as a rug or a bed pad, the vibration is caused by the relationship of the steepness of the vibration transmitting member. There was also the problem of poor transmission efficiency.

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 transmitting member in the direction of sound propagation.

The present invention was made on the basis of the above-mentioned experiment, and the electric-mechanical vibration converter has a thinner overall shape, generates a large vibration, and gives a lateral vibration to the vibration transmitting member. Is to provide.

[0011]

As a means for solving the above-mentioned problems, the present invention provides a pair of flat plates having a magnet attached thereto.
The plate-shaped yokes are connected with a space therebetween, and
Via a damper so that the yoke of the
A moving coil that is mounted in the housing and receives a low frequency current such as an audio signal is provided between the pair of yokes.
The coil axis is orthogonal to and fixed to the housing.
Yl is turned flat wound laminated in the radial direction, one of the winding portion
The peripheral surface has a substantially oval shape along the opposite sides of the yoke.
It is characterized by being formed .

[0012]

Since the present invention is configured as described above , each yaw is generated by the voice current flowing through the moving coil.
Parallel lines of magnetic force are generated on the peripheral surface close to
To move the yoke close to and away from the moving coil
Magnetic interference (interaction of magnetic field lines) occurs and the yoke
It vibrates in the ging.

At this time, the moving coil and the yoke
Is thin, the housing is aligned with the vibration direction of the yoke.
It can be made very thin and the housing follows a thin flat surface.
Vibration (lateral vibration) is output. As a result, it can be mounted easily in Sowase such as a thin rug, the lateral vibration
Will be given.

[0014]

EXAMPLE An electric / mechanical vibration converter 1 according to the present invention is described below.
Will be described with reference to FIGS. Reference numeral 2 is a cross-shaped bobbin (bobbin, FIG. 4). A wire for receiving a low-frequency current such as an audio signal is radially laminated around the bobbin 2.
And is wound flat so that its cross-sectional shape is formed into a substantially oval shape . This wire uses a ribbon ribbon wire,
Further increase the conductor occupancy rate by using a wire with a square cross section
You may do it. Then, the flat-plate-shaped yoke 5 holding the magnet 4 is provided with a minute gap d so as to face the peripheral surface along the major axis of the moving coil (hereinafter referred to as coil) 3 formed by flatly winding the wire. Are arranged. In other words, coil along the sides of the yoke 5.
The peripheral surfaces of 3 are arranged to form the magnetic gap 5a. An example of the minute gap d between the yoke 5 and the coil 3 is about 0.3 mm to 1 mm. Further, the yoke 5 and the coil 3 are arranged in the same plane.

As shown in FIG. 4, the magnet 4 is sandwiched by the yoke 5 so that the polarities thereof are opposite to each other on both sides of the yoke 5. The winding frame 2 around which the coil 3 is wound is fixed to the housing 6 with an adhesive or the like as shown in FIG. The yoke 5 holding the magnet 4 is movably and floatingly supported on the housing 6 by a damper 7 as shown in FIGS. In this embodiment, the winding frame 2 is fixed to the housing 6 and the yoke 5 is floatingly supported by the damper 7, but this may be reversed.

The damper 7 is formed by forming a slit 8 in a plate (FIG. 3), and the damper 7 is fixed to the housing 6 by a means such as adhesion to a spacer 10 fixed to the housing 6 with a bolt 9. There is. Further, the damper 7 is fixed to the yoke 5 by a boss fixed to the damper 7 with a bolt 11.
It is carried out by means such as adhesion to a mounting portion 13 provided via 12. Further, the yokes 5 and 5 holding the magnet 4 are connected to each other by a connecting member 13A.

The coil 3 is formed by winding a wire so as to make ampere-turns as much as possible and prevent the external shape from becoming too large, and obtains a standard impedance. Then, a low-frequency current such as an audio current, which is an output signal of an audio device (not shown), flows through the coil 3.

The housing 6 is formed by combining two boxes 14 and 15 as shown in FIG. 2 in this embodiment, but other structures may be used. , The magnet 4, the yoke 5, etc. can all be accommodated in the same plane.

The operation of this embodiment thus constructed will be described below. In the electromechanical vibration converter 1, since the polarities of the magnets 4 sandwiched by the yokes 5 are opposite to each other, as shown by arrows in FIG. ing. This line of magnetic force H also extends to the coil 3 arranged in the magnetic gap 5a of the yoke 5. In that state, the audio current I which has undergone signal processing such as passing through a low-pass filter from the audio device which is a low frequency signal source
When (AC, indicated by an arrow in FIG. 1) is passed through the coil 3, the coil 3 receives a force F (arrow in FIG. 4) perpendicular to the magnetic flux of the yoke 5 by the magnetic circuit of the yoke 5 (of Fleming's). Left hand rule). Then, the current I flowing through the coil 3
Since the direction of is changed from moment to moment, the coil 3 receives the force F in the forward and reverse directions each time. However, since the winding frame 2 around which the coil 3 is wound is fixed to the housing 6, it is floatingly supported by the damper 7 and vibrates due to the total mass of the yoke 5 that holds the magnet 4 connected by the connecting member (see FIG. 4 is indicated by the arrow S).

This vibration causes the housing 6 to vibrate in the plane direction (direction parallel to the plane of the thin electromechanical vibration converter) because the coil 3 and the yoke 5 are arranged in the same plane. . The force F acting on the coil 3 is the coil 3
Current I flowing in the opposite direction to the yoke 5 facing each other as shown by the arrow in FIG. 1, and the magnetic field lines generated in the magnet 4 sandwiched by the yoke 5 with the polarities reversed. Since the directions are opposite to each other (arrow H in FIG. 4), the directions are the same and the force F is doubled. Further, as shown in FIG. 4, the yoke 5 and the magnet 4 are
Since the total mass of is much larger than the mass of the coil, that is, the weight ratio of the yoke 5 and the coil 3 is large, a large vibration can be obtained.

Further, since the yoke 5 holding the magnet 4 and the coil 3 are arranged in the same plane, the housing can be made thinner. As described above, since the electric / mechanical vibration converter 1 is made thin and it is possible to generate vibration in the plane direction as described above, the electric / mechanical vibration converter 1 is attached to a thin and light rug. If it is attached, lateral vibration can be applied to the vibration transmitting member and the human body placing object.

As described above, the electromechanical vibration converter 1 is attached to the vibration transmitting member of the human body placing object, and the transverse vibration is applied to the vibration transmitting member so that the vibration transmitting member (human body placing object) propagates sound. Vibration in the direction,
As a result, the human body placement object itself does not look like a large diaphragm, and the vibration is transmitted only to the effective area, so that unnecessary low-frequency acoustic radiation can be reduced. Furthermore, by giving lateral vibration, even if the vibration transmission member is thin and light, the apparent rigidity is increased. For example, the greater the tension of the thread of the thread telephone, the better the sound transmission. Will be higher. That is, even if the vibration transmitting member is made of a plastic net-like thin and light material, the lateral stiffness is equivalently maintained and the stiffness in the vibration direction is kept high. Efficiency is improved.

Next, a mode of use of the electromechanical vibration converter 1 of the above embodiment will be described as an example. 5 and 6 show a net 16 which is a vibration transmitting member and a cushion material 17 which surrounds the net 16.
The electric / mechanical vibration converter 1 is attached to a thin rug 18 which is a human body placing object.
Has almost the same thickness as the rug 18. Since the vibration of the housing 6 occurs parallel to the surface of the thin electric / mechanical vibration converter 1, the electric / mechanical vibration converter 1 is used as a rug.
Netting by embedding in parallel along 18 edges
A horizontal vibration can be applied to 16 to make the human body sitting on the rug 18 experience the vibration (see FIG. 6).

By thus applying the lateral vibration to the net 16, the rug 18 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, since the electric / mechanical vibration converter 1 is embedded in the edge portion of the rug 18 in this way to give lateral vibration, the lateral vibration propagates to the entire rug 18 and the electric / mechanical vibration converter 1 is applied to the human body. It is not pushed, and therefore the electric / mechanical vibration converter 1 is not damaged without a feeling of strangeness. 7 to 9 show the structure of FIG. 5, FIG. 7 is a plan view with a part cut away, and FIG. 8 is a sectional view taken along the line D-D of FIG. FIG. 9 shows an enlarged sectional view of a portion indicated by an arrow E in FIG.

10 and 11 show a large area rug 18 having the electromechanical vibration converters 1 attached to 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 of the rug 18, it is not pushed by the human body, and the discomfort and damage caused by it are eliminated.

FIGS. 12 and 13 show an electric / mechanical vibration converter 1 at a substantially middle portion of a rug 19, which is a thick human body placing object.
It shows the one that is equipped with. This rug 19 has a U-shaped intermediate member 22 which is a continuous vibration transmitting member having a high rigidity between an upper cloth 20 and a lower cloth 21. This rug 19
The human body standing upright feels the lateral vibration as shown in FIG. 13 by the lateral vibration applied to the intermediate member 22. Also in this case, similarly to the one shown in FIG. 5, 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. 14 and 15 is also shown in FIG. 12 and FIG.
Although it is substantially the same as that shown in FIG. 13, the electric / mechanical vibration converter 1 is attached near the edge of the rug 19. The vibration is lateral vibration as shown in FIG. Also in this case, as in the case of FIG. 5, 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 feeling of discomfort or damage.

FIGS. 16 to 19 show a case where the electric / mechanical vibration converter 1 is applied to a floor 23 for aerobics of a fitness club which is a human body placing object and a vibration transmitting member. The legs and 25 are insulators.
In the case of this embodiment, when the electromechanical vibration converter 1 operates, lateral vibration as shown by an arrow in FIG. 17 is obtained. Also in this case, like the one shown in FIG. 5, it does not act like a woofer, the vibration transmission efficiency is improved, and since the floor 23 is solid, the electric / mechanical vibration converter 1 is not pushed by the human body. There is no feeling of discomfort or damage.

FIG. 20 and FIG. 21 show an application example to the bed 26, in which the electric / mechanical vibration converter 1 is attached to both side edges of the net 27A which is a vibration transmitting member, and is a mat 27 which is a human body placing object. Is laid in the center of the mattress 28 of the bed 26. In this case, the vibration shown by the arrow in FIG. 21 can be obtained. Also in this case, like the one shown in FIG. 5, 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.

22 and 23 show an example in which the electric / mechanical vibration converter 1 is attached to a core member 26A which is a vibration transmitting member and incorporated in a bed 26 which is a human body mount. As shown in the figure, the electromechanical vibration converter 1 is incorporated in the waist of a lying person. Since the bed 26 has a spring structure, lateral vibration is facilitated, and since the upper surface of the spring assembly structure is driven, there is no discomfort as if it is jumbled, and the electromechanical vibration converter 1 can be easily incorporated. In this case, the vibration will obtain the vibration shown by the arrow in FIG.

The electric / mechanical vibration converter 1 may be attached to the side of the bed 26 at the waist or to the side of the feet. 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, like the one shown in FIG. 5, 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. 24 and 25 show a vibration transmitting member 30A laid on a nap bed 30 which is a human body placed in the operator's cab 29 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 shown by the arrow in FIG. 25 is given. Also in this case, as in the case shown in FIG. 5, 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 feeling of discomfort or damage.

FIG. 26 shows a case where the mat 32 used in the bath 31 is applied. In this case, the electric / mechanical vibration converter 1 is housed in the mat 32 in consideration of waterproofness, and a voice current is passed through it. Then, the vibration shown by the arrow in FIG. 27 is obtained. Also in this case, like the one shown in FIG. 5, 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 to 30 show an electric / mechanical vibration converter 1 housed in a toilet rug 33.
In this case, the electric / mechanical vibration converter 1 is attached to the net 34 in the rug 33 so as to give horizontal vibration to the user's foot as shown in FIG. In FIG. 29 and FIG. 30, reference numeral 35 denotes a speaker, which is mounted on the wall so that the angle can be changed. Also in this case, like the one shown in FIG. 5, 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.

31 to 33 show the electric / mechanical vibration converter 1 of the present invention incorporated in the footrest plate 36 of a person who is seated on an office chair. The notch 37 formed in a part thereof is adapted to be engaged with the leg portion 38 of the chair. Also in this case, like the one shown in FIG. 5, 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.

34 and 35 show a case where the electromechanical vibration converter 1 according to the present invention is applied to a sofa 39. In this case, lateral vibration is applied to the seat portion 40 of the sofa 39. Also in this case, like the one shown in FIG. 5, 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.

[0037]

The present invention is constructed as described above .
It is an electric / mechanical vibration converter, and the moving coil has audio.
By passing an electric current, the force to move the yoke closer and farther is generated.
The vibration is generated by the damper. Where Mubin
The thin coil and yoke make the housing thinner.
And can vibrate in this plane direction.

As described above, since the planar vibration can be generated in the housing and the housing can be made thin, the electromechanical vibration converter can be easily attached to a thin rug. Transverse vibration can be transmitted.

Further, since lateral vibration can be applied to the human body placing object, part of the human body placing object does not act as a large-area diaphragm, and unnecessary low-frequency acoustic radiation is not generated. Therefore, the balance with the sound emitted from the speaker is not disturbed and no noise is emitted.

As described above, since the electric / mechanical vibration converter can be attached along with the human body placing object to give a lateral vibration to the human body placing object, the electric / mechanical vibration converter can be attached to the edge of the human body placing object. In addition, the lateral vibration is propagated to the entire human body placing object, and the electric / mechanical vibration converter can be attached while avoiding a position where the user placing the human body placing object is sitting or lying down.
Therefore, electricity and
There is no risk that the mechanical vibration converter will be pressed by the user and damaged. Further, since lateral vibration is applied to the vibration transmitting member, there is an effect that the vibration transmitting efficiency is improved.

[Brief description of drawings]

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

FIG. 2 is a schematic top view taken along the line AA of FIG.

FIG. 3 is a schematic bottom view taken along the line BB of FIG.

FIG. 4 is a schematic side view taken along the line CC of FIG.

FIG. 5 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided in a rug.

FIG. 6 is a side view of that of FIG.

FIG. 7 is a plan view showing a mounting state of the electric / mechanical vibration converter with a part of FIG. 5 cut away.

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

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

FIG. 10 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.

11 is a side view of that of FIG.

FIG. 12 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. 13 is a side view showing a state in which the user stands up on the one shown in FIG.

FIG. 14 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. 15 is a side view of that of FIG.

FIG. 16 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.

FIG. 17 is a front view of that of FIG.

FIG. 18 is a plan view of that of FIG. 16;

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

FIG. 20 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to a bed.

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

FIG. 22 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is incorporated in a bed.

FIG. 23 is a plan view of that of FIG. 22.

FIG. 24 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 a driver's cab of a large truck.

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

FIG. 26 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.

27 is a schematic diagram showing a cross section of the bath portion 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 toilet rug.

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

FIG. 30 is a side view showing a usage state of the thing of FIG. 28.

FIG. 31 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.

32 is a side view showing a partial cross section of a main part of FIG. 31. FIG.

33 is a perspective view showing a state where the footrest plate in FIG. 31 is separated from the chair. FIG.

FIG. 34 is a perspective view showing a case where the electric / mechanical vibration converter according to the present invention is applied to a sofa.

35 is a side view of that of FIG. 34. FIG.

[Explanation of symbols]

 1 Electro-mechanical vibration converter 3 Coil 4 Magnet 5 Yoke 6 Housing 7 Damper d Micro gap

Claims (1)

[Claims] 1. A pair of flat plate-shaped yo-yos having a magnet attached thereto.
The yokes with a space between them and the pair of yokes.
Through the tamper so that it swings in the connecting direction
And a moving coil that receives a low-frequency current such as a voice signal between the pair of yokes mounted in the housing.
The coil axes are fixed by making them orthogonal, and the moving coil is half
Laminated in a radial direction and wound flatly, with a part of the peripheral surface of the wound part
An electric / mechanical vibration converter characterized by being formed into a substantially oval shape along the opposite sides of the yoke .