JPH0761193B2 - 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 a thin electromechanical vibration converter which generates mechanical vibration by receiving a low frequency current such as a voice signal.

[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 vibrated body described below corresponds to the thread of the above-described thread telephone. Therefore, when an electric / mechanical vibration converter is attached to a vibrating body provided on a human body placing object such as a rug, a bed pad, or a chair, and the mechanical vibration is generated in the electric / mechanical vibration converter, the generated vibration The vibration of the vibrating body is transmitted to the human body placing object. However, there is an inherent technical problem in that the human body placing object becomes a large-area diaphragm depending on how the vibration is applied to the vibrating body, and an unnecessary low-tone acoustic emission is generated like a super-large woofer. If the human body mounting object to which the electric / mechanical vibration converter is attached via the vibrating body 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, in the case where vibration is transmitted to a human body placing object by using the electric / mechanical vibration converter, the vibration of the electric / mechanical vibration converter itself is directly applied to the human body via an object to be vibrated to generate electricity. When the vibration converter is attached, the vibration of the vibrated body 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 that receives a signal from an acoustic device or the like, converts it into mechanical vibration, and applies this vibration to the body together with the 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 conventional electric / mechanical vibration converter is
Vibration is generated in the direction orthogonal to the surface of the disk-shaped electric / mechanical vibration converter.It is mounted horizontally on the vibrating body of the human body mount and is orthogonal to the sound propagation direction on the human body mount. The vibration in the direction of vibration (hereinafter referred to as longitudinal vibration) was applied.

[0006]

[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 placement object, it is necessary to dispose the electric / mechanical vibration converters scattered over the entire plane of the human body placement 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 vibrating body 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 transmitted in relation to the vibrating body's stiffness. There was also the problem of inefficiency.

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

The present invention has been made based on the above experiment, and it is possible to make the overall shape thinner and to cause lateral vibration to the vibrating body and to obtain high vibration transmission efficiency. It is intended to provide an electric / mechanical vibration converter.

[0010]

Means for Solving the Problems According to the present invention for solving the above problems, a pair of substantially C-shaped magnetic bodies are opened.
The sides are faced and connected, and the magnetic bodies face each other.
Supported in the housing via a damper so that it can swing in any direction,
A bar-shaped member is formed in the space in which the ends of the respective magnetic members are bent to face each other.
Position each end of the magnetic body and attach it to the housing.
In addition, a coil for receiving a low frequency current such as a voice signal is wound around one of the opposing magnetic bodies.

[0011]

Since the present invention has such a structure, when a voice current from the audio device is passed through the coil, the magnetic circuit generated in the magnetic body around which the coil is wound and the magnetic circuit generated in the other magnetic body. A magnetic interference action of "suction and repulsion" occurs between the circuit and the C-shaped magnet supported by the damper.
Vibration is generated between the body and the rod-shaped magnetic body . Usually C
Since the mass of the letter-shaped magnetic body is increased, the housing
Becomes a vibration output, and a set of C-shaped magnetic materials is stored in the
The housing is easy to flatten, and the flat surface
Will vibrate.

Further, by arranging the rod-shaped magnetic body and the C-shaped magnetic body in the same plane, it is possible to make the housing thinner, so that the housing can be attached along with a thin rug or the like. As a result, it becomes possible to apply lateral vibration to the vibrating body, and a human body placing object such as a thin rug vibrates laterally.

[0013]

EXAMPLE An electric / mechanical vibration converter 1 according to the present invention is described below.
This will be described with reference to FIG. 1 which is a principle diagram and FIGS. 2 to 5 showing the actual structure. Reference numeral 2 denotes a magnetized magnet which is a rod-shaped magnetic body. As shown in FIG. 1, the magnet 2 is magnetized with an N pole on the left side and an S pole on the right side.
Approximately C which is not magnetized near both ends of this magnet 2
Cores 3 each having a letter-like shape are arranged in the same plane so that the magnets 2 are sandwiched between the bent ends 3a. The magnet 2 and the bent end 3a of the core 3 are 0.3
They are opposed to each other with a minute gap d of about mm to 1 mm provided.
The magnet 2 is then attached to the housing 4 as shown in FIG.
It is fixed in a state where one side surface thereof is supported by the mounting portion 5 which is adhesively fixed to. Further, a substantially C-shaped core 3 near both ends of the magnet 2 is floatingly supported by a damper 6 in a freely vibrating manner on a housing 4 as shown in FIG.

The damper 6 is formed by forming a slit 7 in a plate (see FIG. 4). The damper 6 is fixed to the housing 4 by a spacer 9 fixed to the housing 4 with a bolt 8 as shown in FIG. It is performed by means such as adhesion.
Further, the damper 6 is fixed to the substantially C-shaped core 3 by means such as adhesion to a boss 11 fixed to the damper 6 with a bolt 10 as shown in FIG. Further, the cores 3 provided in the vicinity of both ends of the magnet 2 are arranged on top of each other,
They are connected by U-shaped connecting members 12 (see FIG. 3) fixed to both sides of the lower surface.

A bobbin 14 around which a coil 13 is wound is mounted on the central portion of the core 3. These coils 13 are selected in such a way that they can make ampere turns as much as possible and the outer diameter does not become too large, and they are wound and connected in series or in parallel so as to obtain the standard impedance. There is. Further, the coil 13 generates a magnetic force by a low frequency current such as a voice current which is an output signal of the audio device 15.

In this embodiment, the housing 4 is formed by combining two boxes 16 and 17 as shown in FIG. 5, but other structures may be used. It suffices that it can accommodate all of the coil 3, the coil 13 and the like in the same plane.

The operation of this embodiment thus constructed will be described below. In the electromechanical vibration converter 1, since one of the magnetic bodies is the magnet 2, magnetic force lines are constantly generated, and the magnetic force lines extend to the core 3 side. In that state, when the audio device 15 which is a low-frequency signal source supplies a voice current, which has been signal-processed such as passing through a low-pass filter, to the coil 13, the core 3 serving as an electromagnet is instantly and instantaneously (shown in FIG. 1). N, S) The polarity changes. Therefore, a magnetic interference action of "attraction and repulsion" occurs between the magnet 2 whose polarity does not change and the damper 6
The housing 4 vibrates due to the mass of the two cores 3 which are floatingly supported by and are connected by the connecting member 12. In this vibration direction, the magnet 2 and the substantially C-shaped core 3 are arranged in the same plane, so that the housing 4 vibrates in the plane direction (direction parallel to the plane of the thin electromechanical vibration converter 1). I will let you.

Further, by arranging the magnet 2 and the substantially C-shaped core 3 in the same plane, the housing can be made thinner. In this case, if the weight ratio between the magnet 2 and the substantially C-shaped core 3 is increased, large vibration can be generated. In this way, the electric / mechanical vibration converter 1 is made thin and the vibration in the plane direction is generated. Therefore, if the electric / mechanical vibration converter 1 is attached to a thin and light rug or the like, vibration is generated. It becomes possible to give a lateral vibration to the body.

As described above, the electromechanical vibration converter 1 is attached to the vibrating body of the human body placement object, and lateral vibration is applied to the vibrating body, so that the vibrating body (human body placement object) propagates sound. 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 bass sound emission can be reduced. . Further, by giving the lateral vibration, the apparent rigidity is increased even if the vibrated body is thin and light, and, for example, the greater the tension of the thread of the thread telephone, the better the sound transmission. The vibration transmission efficiency can be increased. That is, even if the vibrating body is made of a plastic net-like thin and light material, the lateral vibration is applied to keep the stiffness (rigidity force) in the vibrating direction equivalently high. Efficiency is improved.

FIG. 6 shows a modification of the electric / mechanical vibration converter 1. The one shown in this figure uses a non-magnetized core 18 in place of the magnet 2 in FIG. 1, and a magnet 19 magnetized in the center instead of the substantially C-shaped core 3.
Is placed, and the magnetic body 21 in which the core 20 is coupled to both ends of the
The coil 13 is wound around the core 20. Further, in the structure shown in FIG. 7, the relationship between the magnet 19 and the core 20 in FIG. 6 is reversed and the coil 13 is wound around the core 20. In these structures, vibration is obtained by the action of strengthening or weakening the magnetic field lines of the magnet 19 that are constantly generated by applying the audio current to the coil 13. 6 and 7, the coil 13 is wound around the core 20, but instead of this, even if the coil 13 is wound around the core 18, the magnetic lines of force of the magnet 19 that are always generated in the same manner are used. Vibration is obtained by the action of strengthening or weakening the sound current applied to the.

Next, a mode of use of the electromechanical vibration converter 1 of the above embodiment will be described as an example. 8 and 9 show an electric / mechanical vibration converter 1 attached to a thin rug 24, which is a human body placing object, made up of a net 22 which is a vibrating body and a cushion material 23 which surrounds the net 22. The transducer 1 has almost the same thickness as the rug 24. Since the vibration of the housing 4 is generated in parallel with the surface of the thin electric / mechanical vibration converter 1, the electric / mechanical vibration converter 1 is used as a rug.
By embedding in parallel along the edge of 24, it is possible to give a lateral vibration to the net 22 and make the human body sitting on the rug 24 experience the vibration (see FIG. 9).

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, since the electric / mechanical vibration converter 1 is embedded in the edge portion of the rug 24 in this manner to give lateral vibration, the lateral vibration propagates to the entire rug 24 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. 10 to 12 show the structure of FIG. 8, FIG. 10 is a plan view with a part cut away, and FIG. 11 is a sectional view taken along the line DD of FIG. FIG. 12 shows an enlarged sectional view of a portion indicated by an arrow E in FIG.

13 and 14 show a rug 24 having a large area with the electromechanical vibration converter 1 mounted on both ends thereof. In this case as well, similar to 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.

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

Also shown in FIGS. 17 and 18 are FIGS.
It is substantially the same as that shown in FIG. 16, 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. 8, 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. 19 to 22 show a 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 is a vibrated body. Is a leg and 31 is an insulator. In the case of this embodiment, when the electromechanical vibration converter 1 is activated, lateral vibration as indicated by an arrow in FIG. 20 is obtained. Also in this case, similarly to the one shown in FIG. 8, it does not act like a woofer, the vibration transmission efficiency is improved, and the floor 29 is solid, so the electric / mechanical vibration converter 1 may be pushed by the human body. Since it does not exist, there is no feeling of discomfort or damage.

23 and 24 show an example of application 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 vibrating body, 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. 24 can be obtained. Also in this case, as in the case shown in FIG. 8, 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.

25 and 26 show an example in which the electric / mechanical vibration converter 1 is attached to a core material 32A which is a vibrating body and incorporated in a bed 32 which is a human body mounting 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 easy, and since the top surface of the spring assembly structure is driven, there is no discomfort as if it is jumbled.
Easy to install. 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. In this case as well, as in the case of FIG. 8, 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.

FIGS. 27 and 28 show an electric / mechanical vibration converter of the present invention in a vibrating body 36A laid on a nap bed 36 which is a human body placed in the cab 35 of a large truck. 1 is applied. In this case, the electric / mechanical vibration converter 1 is installed on the foot side, and vibration as indicated by an arrow in FIG. 28 is applied. In this case as well, as in the case shown in FIG. 8, it does not act like a woofer, the vibration transmission efficiency is improved, and since it is not pushed by the human body, there is no sense of discomfort or damage.

FIG. 29 shows a 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. 30 is obtained. Also in this case, as in the case of FIG. 8, 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 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 32 and Figure 33
Reference numeral 41 in FIG. 1 denotes a speaker, which is mounted on the wall in a variable angle. Also in this case, as in the case of FIG. 8, 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 to 36 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. 8, 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.

FIG. 37 and FIG. 38 show the 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.

[0034]

The present invention exhibits, over by the described way magnetic rod-shaped and substantially C-shaped and the magnetic material is disposed in the same plane, the flat of the electromechanical vibration transducer formed on a thin Na
A child that vibrates along a surface can be formed, and a flat surface such as a bed or floor
Lateral vibration can be applied when they are installed together . For this reason , the bed, floor, etc. are shaken in a direction orthogonal to the plane.
Since it does not move, it does not act as a large-area diaphragm, and unnecessary low-frequency acoustic radiation is not generated. Therefore, the balance with the sound radiated by the speaker is not lost.

As described above, since the electric / mechanical vibration converter can be attached along with the human body placing object to give 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. Also, the lateral vibration is propagated to the entire human body placing object, and the electric / mechanical vibration converter can be attached while avoiding the position where the user placing the human body placing object is sitting or lying down. Therefore, electricity / electricity can be applied without giving the user a feeling of strangeness.
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 vibrated body, the vibration transmission efficiency is improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the principle of an electric / mechanical vibration converter according to the present invention.

FIG. 2 is a schematic plan view showing a structure of an electric / mechanical vibration converter according to the present invention.

FIG. 3 is a schematic top view taken along the line AA of FIG.

FIG. 4 is a schematic bottom view taken along the line BB in FIG.

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

FIG. 6 is a schematic plan view showing a modified example of the structure of the electromechanical vibration converter according to the present invention.

FIG. 7 is a schematic plan view showing another modified example of the structure of the electromechanical vibration converter according to the present invention.

FIG. 8 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided in a rug.

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

FIG. 10 is a plan view showing a mounting state of the electric / mechanical vibration converter with a part of FIG. 8 cut away.

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

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

FIG. 13 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. 14 is a side view of that of FIG.

FIG. 15 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. 16 is a side view showing a state in which the user stands up on the one shown in FIG. 15.

FIG. 17 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. 18 is a side view of that of FIG.

FIG. 19 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.

20 is a front view of that of FIG. 19. FIG.

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

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

FIG. 23 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to a bed.

FIG. 24 is a plan view of that of FIG. 23.

FIG. 25 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is incorporated in a bed.

FIG. 26 is a plan view of that of FIG. 25.

FIG. 27 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.

28 is a side view of that of FIG. 27. FIG.

FIG. 29 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. 30 is a schematic diagram showing a cross section of the bath portion of FIG. 29.

FIG. 31 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.

32 is a plan view of that of FIG. 31. FIG.

FIG. 33 is a side view showing a usage state of the thing of FIG. 31.

FIG. 34 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.

35 is a side view showing a partial cross-section of a main part of FIG. 34. FIG.

36 is a perspective view showing a state where the footrest plate in FIG. 34 is separated from the chair. FIG.

FIG. 37 is a perspective view showing a case where the electric / mechanical vibration converter according to the present invention is applied to a sofa.

38 is a side view of that of FIG. 37. FIG.

[Explanation of symbols] 1 Electric / mechanical vibration converter 2 Magnet 3 Core 4 Housing 13 Coil 17 Acoustic equipment d Micro gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 50-13027 (JP, A) Actual development No. 64-23199 (JP, U) Patent 88424 (JP, C1)

Claims (1)

[Claims] 1. A pair of substantially C-shaped magnetic bodies facing the opening side.
Connect them together and shake them in the direction in which the magnetic bodies face each other.
Movably supported by a housing through a damper,
The rod-shaped magnetic body is placed in the space where the ends of the body are bent and faced each other.
Position each end and attach to the housing,
An electric / mechanical vibration converter characterized in that a coil that receives a low-frequency current such as a voice signal is wound around one of the opposing magnetic bodies.