JPH0761198B2 - 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 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 of a human body placement 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 is the human body placement object. Will be transmitted to. 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 a human body mounted with an electric / mechanical vibration converter emits such unnecessary low-frequency sound radiation, it may damage the balance with the sound radiated by the speaker or cause noise. The mechanical vibration converter is required to have no sound even when vibration is transmitted to the human body placing object. In addition to the above problem of sound, it is desired that the vibration transmission efficiency to the human body placement object is high.

Further, when the vibration is transmitted to a human body mounted object by using the electric / mechanical vibration converter, if the vibration of the electric / mechanical vibration converter itself is directly applied to the human body, the electric / mechanical vibration converter is mounted. However, the vibration may be excessively transmitted to the human body, causing a feeling of strangeness. 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 held down by the human body, which may affect the vibration transmission or the load on the human body. Depending on the situation, the electric / mechanical vibration converter may be damaged. Therefore, in consideration of the uncomfortable feeling, it is desired that the mounting position of the electric / mechanical vibration converter does not directly contact the human body with the vibration of the electric / mechanical vibration converter.

[0004] 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 receives this vibration along with the sound from a speaker or headphones on the body. 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, which is mounted horizontally on the vibrating body of the human body mount and in the direction orthogonal to the sound propagation direction on the human body mount. Vibration (hereinafter, vibration in this vibration direction is called vertical vibration)
Was being given.

[0006]

[Problems to be Solved by the Invention]
The mechanical vibration converter was 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 to the human body placing object. No. could not be mounted as it is, except for mounting in the direction in which longitudinal vibration is applied to the human body placing object, that is, the disk surface of the electric / mechanical vibration converter is fitted along the human body placing object. 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 electric / mechanical vibration converters must be arranged so as to be scattered on the 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 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]

The present invention solves the above problems.
The center of the inside of the flat housing as a means to determine
The magnetic material of the rod-shaped fixed over part, Gu a magnetic material of the rod-like
On the same plane of the two cut spaces , each protruding end of the E-shaped magnetic body is provided with a minute gap in the rod-shaped magnetic body.
Provided and opposed to each other and supported floating via a damper ,
A coil for receiving a low-frequency current such as a voice signal is wound around the E-shaped magnetic body , and a low-frequency signal source is connected to the coil.

[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" is generated between the circuit and the circuit, and vibration due to the mass of the magnetic body floatingly supported by the damper is generated. Since this vibration arranges the rod-shaped magnetic body and the E-shaped magnetic body in the same plane, the housing is vibrated in the plane direction (direction parallel to the plane of the thin electromechanical vibration converter). become.

Further, by disposing the rod-shaped magnetic body and the E-shaped magnetic body in the same plane and dividing one of the magnetic bodies into the E-shape and winding the coil, the coil bobbin can be wound. By reducing the diameter and the like, the housing can be made thinner and the weight ratio of the rod-shaped magnetic body and the E-shaped magnetic body can be increased. Also two
Vibration is generated by push-pull action by E-shaped magnetic body
Force In this way, make the electric / mechanical vibration converter thin,
Moreover , since the vibration of the housing that transmits the vibration to the vibrating body is strongly generated in the plane direction, the lateral vibration is applied to the vibrating body by attaching the electric / mechanical vibration converter along with a thin rug. It will be possible.

[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. 2 is a magnetized magnet is a magnetic material of the rod-shaped, the central portion of the flat housing 4 2
Installed for minutes. 2 of this magnet 2
A core 3 which is an E-shaped magnetic body and is not magnetized in the divided space portions on both sides has a magnet 2 on the protruding portion 3a side.
Are arranged in the same plane. The ends of the magnet 2 and the protruding portion 3a of the core 3 are 2 mm to 5 mm.
The minute gaps d of about mm are provided to face each other. And
The magnet 2 is attached to the housing 4 with an attachment portion 5 fixed to the housing 4.
The two ends of the magnet 2 are fixed in a supported state, and the E-shaped cores 3 on both sides of the magnet 2 are floatingly supported by the damper 6 in a freely vibrating manner on the housing 4.

The damper 6 is formed by forming a slit 7 in a plate (see FIG. 4), and the damper 6 is fixed to the housing 4 by means such as bonding to a spacer 9 fixed to the housing 4 with a bolt 8. ing. The damper 6 is fixed to the E-shaped core 3 by means such as adhesion to a boss 11 fixed to the damper 6 with a bolt 10. Further, the cores 3 provided on both sides of the magnet 2 are connected to each other by a connecting member 12 (see FIG. 2) having a U-shape in a top view, which is fixed to both sides of the upper surface portion and the lower surface portion thereof (see FIG. 3). ing.

A bobbin 14 around which a coil 13 is wound is mounted on each protruding portion 3a of the E-shaped core 3 provided on both sides of the magnet 2. Therefore, the coil 13 has 6
It is divided into individual bobbins 14 and wound around the protruding portion 3a. Each of these coils 13 is connected in series or in parallel so as to obtain an ampere turn as much as possible and to have a wire diameter such that the outer shape does not become too large and have a winding standard impedance. . 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 made flat as shown in FIGS . 3 to 5, and is formed by combining two boxes 16 and 17 .

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 and the magnet 2 whose polarity does not change.

Due to this magnetic interference action, the vibration of the two cores 3 floatingly supported by the damper 6 and connected by the connecting member 12 causes the housing 4 to vibrate. In this vibration direction, since the magnet 2 and the E-shaped core 3 are arranged in the same plane, the housing 4 is vibrated in the plane direction (direction parallel to the surface of the thin electromechanical vibration converter 1). It will be.

Further, the magnet 2 and the E-shaped core 3 are arranged in the same plane, and the coil 13 is divided into 6 parts around the protruding portion 3a of the E-shaped core 3 and the coil 13 is wound. By reducing the diameter of the bundle, the housing can be made thinner, and the weight ratio between the magnet 2 and the E-shaped core 3 can be increased to generate a large vibration force. In this way, the electric / mechanical vibration converter 1 is made thin,
In addition, since the vibration is generated in the plane direction, it is possible to apply lateral vibration to the vibrating body by attaching the electric / mechanical vibration converter 1 to a thin and light rug together.

As described above, the electric / mechanical vibration converter 1 is attached to the vibrating body of the human body placement object, and lateral vibration is applied to drastically reduce the effective area of the vibrating body (human body placement object). It is possible to reduce unnecessary bass sound emission. Furthermore, by giving lateral vibration, the apparent rigidity becomes high even if the vibrating 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 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 stiffness vibrates and the stiffness (rigidity force) in the vibrating direction is equivalently maintained to be high. Is improved.

FIG. 6 shows a modification of the electromechanical vibration converter 1. In this drawing, a non-magnetized core 18 is used in place of the magnet 2 shown in FIG. 1, and further, the E-shaped core 3 is replaced with a U-shaped core 19 which is magnetized to have three poles. The coil 13 is wound around the protruding portion 19a of the U-shaped core 19 using the magnetic body 21 to which the magnet 20 is attached. In this structure, vibration is obtained by the action of strengthening or weakening the magnetic force lines of the magnet 20 which are constantly generated by applying the voice current to the coil 13.

Next, a mode of use of the electromechanical vibration converter 1 of the above embodiment will be described as an example. 7 and 8 show an electric / mechanical vibration converter 1 attached to a thin rug 24, which is a human body placing object, which is composed 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 with the edges of 24, the net 22 can be laterally vibrated so that the human body sitting on the rug 24 can experience the vibration (see FIG. 8).

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 won't be pushed, so there will be no discomfort. 9 to FIG.
11 shows the structure of FIG. 7, FIG. 9 is a plan view with a part cut away, FIG. 10 is a sectional view taken along the line D-D of FIG. 9, and FIG. 11 is of FIG. The sectional view which expanded the part shown by the arrow E is shown.

FIGS. 12 and 13 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. 7, like a woofer. 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 a person, and the discomfort and damage due to it are eliminated.

FIGS. 14 and 15 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 on the rug 25 has a lateral vibration as shown in FIG. 15 due to the lateral vibration applied to the intermediate member 28. Also in this case, FIG.
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. 16 and 17 are FIGS.
Although it is almost the same as that shown in FIG. 15, the electric / mechanical vibration converter 1 is attached near the edge of the rug 25.
The vibration is lateral vibration as shown in FIG. Also in this case, as in the case of FIG. 7, 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.

FIGS. 18 to 21 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 body placement 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. 19 is obtained. Also in this case, as in the case shown in FIG. 7, 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 can be pushed by a person. Since it does not exist, there is no feeling of discomfort or damage.

22 and 23 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 34A which is a vibrating body, and a mat 34 which is a human body placing object. Is placed on the center of the mattress 33 of the bed 32. In this case, the vibration shown by the arrow in FIG. 23 can be obtained. Also in this case, as in the case of FIG. 7, 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.

24 and 25 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 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. 7, 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. 26 and FIG. 27 show an electro-mechanical vibration converter of the present invention on a vibrated 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. 27 is given. Also in this case, as in the case of FIG. 7, 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. 28 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. 29 is obtained. Also in this case, as in the case shown in FIG. 7, 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.

30 to 32 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 31 and Figure 32
Reference numeral 41 in FIG. 1 denotes a speaker, which is mounted on the wall so that the angle can be varied. Also in this case, as in the case of FIG. 7, 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.

33 to 35, the electric / mechanical vibration converter 1 of the present invention is incorporated in the footrest plate 42 of a person sitting on an office chair. The notch 43 formed in a part of the notch is engaged with the leg portion 44 of the chair. Also in this case, as in the case of FIG. 7, 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.

36 and 37 show the case where the electric / mechanical 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.

[0035]

As described above, according to the present invention, the rod-shaped magnetic body and the E-shaped magnetic body are arranged in the same plane.
Further, by dividing and winding the coil, the electromechanical vibration converter can be formed thin. Moreover, since the vibration direction of the housing that gives vibration to the vibrating body is the plane direction of the electric / mechanical vibration converter, the thin electric / mechanical vibration converter is attached to the human body object by the same installation method as the conventional one. Lateral vibration can be applied to the human body mounting object by mounting it. For this reason, a part of the human body placement object does not act as a large-area diaphragm, and unnecessary low-tone 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 to the human body placing object so as to give a lateral vibration to the human body placing object, the electric / mechanical vibration converter is attached to the edge of the human body placing object. Also, the lateral vibration is propagated to the entire human body placement object, and the electric / mechanical vibration converter can be attached while avoiding the position where the user of the human body placement object is sitting or lying down. Therefore, electricity / electricity can be applied without giving the user a feeling of strangeness.
There is also no risk of the mechanical vibration converter being 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 view seen from the line AA of FIG.

FIG. 4 is a schematic view seen from the line BB of FIG.

5 is a schematic view seen from the line CC of FIG. 2. 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 perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided in a rug.

8 is a side view of that of FIG. 7. FIG.

9 is a plan view showing a state in which the electric / mechanical vibration converter is attached by cutting out a part of FIG. 7. FIG.

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

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

FIG. 12 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is provided at both ends in a rug having a large area.

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

FIG. 14 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. 15 is a side view showing a state in which the user stands up on the one shown in FIG.

FIG. 16 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. 17 is a side view of that of FIG.

FIG. 18 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to a floor for aerobics.

FIG. 19 is a front view of that of FIG. 18;

20 is a plan view of that of FIG. 18. FIG.

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

FIG. 22 is a perspective view showing an example in which the electromechanical vibration converter according to the present invention is applied to 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 electromechanical vibration converter according to the present invention is incorporated in 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 electric / mechanical vibration converter according to the present invention is applied to a nap bed in the cab of a large truck.

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

FIG. 28 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. 29 is a schematic view showing the bath section of FIG. 28 in a sectional view.

FIG. 30 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.

31 is a plan view of that of FIG. 30. FIG.

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

FIG. 33 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.

34 is a side view showing a partial cross section of a main part of FIG. 33. FIG.

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

FIG. 36 is a perspective view showing a case where the electric / mechanical vibration converter according to the present invention is applied to a sofa.

FIG. 37 is a side view of that of FIG. 36.

[Explanation of symbols]

 1 Electro-mechanical vibration converter 2 Magnet 3 Core 4 Housing 6 Damper 13 Coil 17 Audio equipment

Claims (1)

[Claims] 1. A flat housing over the center of the inside
The magnetic material of the rod-shaped fixed and separated by magnetic of the bar-like 2
On the same plane of the two spaces ,
Each protruding end faces the rod-shaped magnetic body with a minute gap.
And the floating support through the damper , and the E-shaped
An electric / mechanical vibration converter, characterized in that a coil receiving a low-frequency current such as an audio signal is wound around a magnetic body , and a low-frequency signal source is connected to the coil.