JPH0761196B2 - 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 electromechanical vibration converter which receives a low-frequency current such as a voice signal to generate a mechanical signal.

The present inventor et al. Have long researched a perceptual 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. Many patent rights or utility model rights have been acquired (Japanese Patent Publication No. 58-251).
No. 7, JP-B-57-9272, JP-B-58-
9640 JP, Japanese Utility Model 64-6622, JP-Utility Model
58-4316, etc.).

In each of these publications, an electric / mechanical vibration converter is embedded in a human body placing object or attached to a human body placing object so that the vibration generated by the electric / mechanical vibration converting element is generated. The structure was given to the human body through the human body placing object.

[0004]

In the case where the vibration of the electric / mechanical vibration converter is sensed by the user's body through the human body placing object as described above, the conventional electric / mechanical vibration converter is used.
Since the priority was placed on the function and conversion efficiency of the mechanical vibration converter, consideration was given to the size and sounding characteristics of the electric / mechanical vibration converter and the vibration direction of the human body mounted object (vibrated body). I didn't like it.

A conventional electric / mechanical vibration converter generates a vibration output in the axial direction of a magnet, a coil or the like (direction orthogonal to the plane of the disk-shaped electric / mechanical vibration converter). When horizontally attached to a human body placing object such as a rug, a bed pad, or a chair and the human body placing object is vertically vibrated,
A part of the human body placement object may act as a large-area diaphragm.

When the human body object acts as a large-area diaphragm in this way, there is a problem that it becomes like a super-large woofer and produces unnecessary low-frequency sound radiation. If the human body mounted with the electric / mechanical vibration converter emits unnecessary low-frequency acoustic radiation, the balance with the sound emitted from the speaker may be destroyed or noise may be generated. What is required of the electric / mechanical vibration converter is that no sound is generated even if it vibrates. Further, in the case of vertically vibrating a human body placing object, there is a problem that if the vibrating body is lightened, it becomes soft and the vibration transmission efficiency is lowered (vibration is difficult to be transmitted).

Further, in the case of vertically vibrating a human body placing object such as a rug, a bed pad, a chair, etc. using an electric / mechanical vibration converter of a type in which a vibration output is generated in the axial direction such as a magnet and a coil which have been conventionally used However, due to its structure, the user may feel uncomfortable as he / she sits on or reclines on the part to which the electric / mechanical vibration converter is attached, and in some cases, it affects vibration transmission. In some cases, the electric / mechanical vibration converter may be damaged by the load of the user on the human body placing object.

For this reason, when lateral vibration is applied to the human body placing object in the lateral direction, unnecessary low-tone acoustic radiation does not occur. This is because the effective area of the vibrated plate can be drastically reduced by making the vibration of the human body placement object lateral. As a result, it is possible to drastically reduce unnecessary low-frequency sound radiation, and it is possible to approach an ideal state in which no sound is generated even when vibrating.

Further, the vibration transmission efficiency is improved by applying the lateral vibration to the human body placing object. This is because even if the vibrated plate is soft, when lateral vibration is applied from the lateral direction, the apparent rigidity is increased and the vibration is well transmitted. For example, even if a plastic mesh light material is applied with lateral vibration, the stiffness in the vibration direction is kept equivalently high and the vibration transmission efficiency is increased. Further, if the lateral vibration is applied from the lateral direction, it is not necessary to dispose the electric / mechanical vibration converter at the portion where the load of the user of the human body placement object is applied.

Therefore, when a human body placing object is laterally vibrated by using a conventional electric / mechanical vibration converter, an L-shaped bracket or the like is attached to a side portion of the human body placing object, and the electric or mechanical vibration is attached to the bracket or the like. If the transducer is mounted vertically and the vibration output generated in the axial direction is applied to the human body placing object via a bracket or the like, the human body placing object will vibrate laterally. However, when the electric / mechanical vibration converter is arranged on the side of the human body mount in this way, the electric / mechanical vibration converter is erected, so that the position and space in the height (thickness) direction must be set in order to mount it. In other words, there is a problem that it is a hindrance to the user and the appearance is impaired.

The present invention has been made in view of this point, and the overall shape is made thinner, and the vibration is directed in the plane direction (direction parallel to the plane of the flat vibration converter). Moreover, it is intended to provide an electric / mechanical vibration converter capable of obtaining strong vibration.

[0012]

As a means for solving the above problems, the present invention provides a rod on the inner wall of a flat housing.
Jo of a magnetic material is fixed, each projecting end of E-shaped magnetic body on the side surface of the magnetic material of the rod-shaped are opposed by providing microvoids, the E
Supporting a V -shaped magnetic body in the housing via a damper
In addition, a coil for receiving a low-frequency current such as a voice signal is wound and the coil is connected to a low-frequency signal source to obtain an electromechanical vibration converter.

[0013]

According to this structure, when the voice current from the acoustic device is applied to the coil, the magnetic circuit is generated between the magnetic body wound around the coil and the magnetic circuit generated in the other magnetic body. "suction, repel" the by magnetic interference effect occurs that would be vibrated along the mass flat surface Howe <br/> managing against the magnetic body which is supported by the damper. this
Mount with the flat surface of the housing aligned with the surface of the human body mounting object
By virtue of the kicking, the human body placing object is laterally vibrated. In addition, the coil is divided into each protruding end of the E-shaped magnetic body.
The housing can be reduced in thickness by winding in such a manner .

[0014]

EXAMPLE An electric / mechanical vibration converter 1 according to the present invention is described below.
The principle will be described with reference to FIG. 1 and FIGS. 2 to 5 showing the actual structure. Reference numeral 2 is a magnet which is a rod-shaped magnetic body. The magnet 2 has three end portions and a central portion.
It is magnetized to the pole. At both ends and the central portion of the magnet 2, a minute gap d is provided in which the end of the protruding portion 3a of the E-shaped core 3 which is not magnetized is about 2 to 5 mm. They are facing each other. The magnet 2 which is both magnetic bodies and the magnet 2 which is one of the E-shaped cores 3 is a bolt 5 on the inner wall of the flat housing 4.
The E-shaped core 3 which is the other magnetic body is fixed by the dampers 6 and 7 so that the E-shaped core 3 can freely vibrate in the housing 4.
It is supported .

In this embodiment, the housing 4 is made flat as shown in FIGS. 3 to 5, and is formed by joining two plates 4a and 4b .

As for the concrete structure of the supporting portion of the E-shaped core 3, the damper 6 side is such that, as shown in FIG. 4, the end portion of the damper 6 which is an elastic plate having a U-shape is partially attached to the housing 4. It is supported by a retainer 8 provided on the inner side, and the damper 7 side is, as shown in FIG. 5, a damper 7 in which slits 9 and 10 are formed on a plate and a housing 11 with a bolt 12 via a spacer 11.
It is fixed to.

The damper 6 is fixed to the E-shaped core 3 by a coil.
The bobbin 14 around which the winding 13 is wound is adhered to the end of the bobbin 14, and the damper 7 is fixed to the E-shaped core 3 by attaching the boss 16 attached to the damper 7 with the bolt 15 to the base of the core 3. Etc.

The core 3 is E-shaped, and one coil 13 wound around a bobbin 14 is attached to each of all protruding portions 3a of the core 3. The coil 13 generates a magnetic force with a low frequency current such as a voice current which is an output signal of the audio device. The three coils 13 can be made long so that the ampere turns can be made as long as possible, and the wire diameter is selected so that the external shape does not become too large, and the coils are connected in series or in parallel so that the standard impedance is achieved. Has been done.

An electric / mechanical vibration converter 1 having such a configuration
The rod-shaped magnet 2 magnetized with three poles constantly generates magnetic force lines, and the magnetic force lines extend to the E-shaped core 3 side. In this state, when an audio current that has undergone signal processing, such as passing through a low-pass filter, is made to flow from the audio device 17, which is a low-frequency signal source, to the coil 13, the core 3 that becomes an electromagnet is instantly and instantaneously (see FIG. 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 mass of the E-shaped core 3 and the coil 13 supported by the dampers 6 and 7 is
To vibrate the housing 4 strongly in the plane direction . That
The flat surface of the housing 4 according to the conventional mounting method.
Preparative electromechanical vibration transducer 1 in accordance with the surface of the human body mounting object
By attaching it, the human body placing object is laterally vibrated.

FIG. 6 shows an electric / mechanical vibration converter 1
It is a modified example of. The one shown in this figure uses a non-magnetized core 18 instead of the magnet 2 in FIG.
Instead of the U-shaped core 3, a magnetic body 21 in which a magnet 20 having three poles is arranged in the center of the U-shaped core 19 is used, and the coil 13 is wound around the protruding portion 19a of the core 19. . 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 the application of the audio current of the coil 13.

The electric / mechanical vibration converter 1 described above is
Choose the wire diameter so that the ampere turns can be made as much as possible with the three coils 13, 13, and the outer shape of the coil 13 does not become too large, and the coil is wound in series, or in series or parallel so that the standard impedance is achieved. Connect to. The coil 13 is manufactured in this way, and the rod-shaped magnet 2 and the E-shaped core 3 are arranged in a plane, and the coil 13 is divided into three parts.
Can be quite thin.

Next, the electric / mechanical vibration converter 1 having the above structure.
An example of a human body placing object using is explained. 7 and 8 are embedded in the rug 22. That is, the electric / mechanical vibration converter 1 is embedded in the rug 22 composed of the net 23 and the cushion material 24 surrounding the net 23 to generate lateral vibration in the net 23 as shown in FIG. 9 to 11 show the structure thereof. FIG. 9 is a partially cutaway plan view, FIG. 10 is a sectional view taken along line D-D of FIG.
Reference numeral 11 shows an enlarged cross section of the portion indicated by arrow E in FIG.

The structure shown in FIGS. 12 and 13 is obtained by improving the structure shown in FIGS. 7 and 8 so that the rug 22 is electrically and electrically connected to both ends thereof.
The mechanical vibration converter 1 is embedded. In this case, the vibration of the electric / mechanical vibration converter 1 is generated in the vicinity of both ends of the rug 22, which is suitable for the rug 22 having a large area.

A thick rug 25 is shown in FIGS. 14 and 15.
Is the case. This rug 25 is one in which a continuous U-shaped intermediate member 28 is sandwiched between an upper cloth 26 and a lower cloth 27, and the electric / mechanical vibration converter 1 is provided on both sides of the center of the intermediate member 28. It was supported. In this case, it can be made thicker (higher) than those in FIGS. 7 and 8. Intermediate member
From the shape of 28, it is strong against a load from above, and the vibration in the horizontal direction is well performed.

Also shown in FIGS. 16 and 17 are FIGS.
Although it is almost the same as that shown in 15, the mounting location of the electric / mechanical vibration converter 1 is changed so that the electric / mechanical vibration converter 1 faces toward the electric / mechanical vibration converter 1 when seated.

18 to 21 show a case where the electromechanical vibration converter 1 according to the present invention is applied to a floor 29 for aerobics of a fitness club, where 30 is a leg and 31 is an insulator. In the case of this embodiment, when actuated, vibration as indicated by the arrow in FIG. 19 is generated.

22 and 23 show an application example to the bed 32, in which the mat 34 having the electromechanical vibration converter 1 mounted on both sides is placed in the center of the mattress 33. In this case, the vibration shown by the arrow in FIG. 23 can be obtained.

FIG. 24 shows a cab 35 of a large truck.
The electro-mechanical vibration converter 1 of the present invention is applied to a nap bed 36 inside. In this case, it is preferable that the electric / mechanical vibration converter 1 is installed on the foot side to generate the vibration as shown by the arrow in FIG.

The one shown in FIG. 26 is applied to the mat 38 used in the bath 37. 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. 27 is obtained.

28 to 30 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 29 and Figure 30
Reference numeral 41 in FIG. 1 denotes a speaker, which is mounted on the wall so that the angle can be varied.

31 to 32 show the electric / mechanical vibration converter 1 of the present invention incorporated in the footrest plate 42 of a person who sits 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 44 of the chair.

34 and 35 show a case where the electromechanical vibration converter 1 according to the present invention is applied to the sofa 45. In this case, the seat portion 46 of the sofa 45 vibrates horizontally as shown in FIG.

[0034]

The present invention is an electric / mechanical vibration converter configured as described above, and the vibration direction of the electric / mechanical vibration converter that has been widely used in the past is orthogonal to the mounting surface.
Therefore, it was easy to generate low-pitched sound radiation.
・ If the mechanical vibration converter is installed in the same way as the conventional one, it is possible to laterally vibrate the human body object. As a result, the effective area of the vibrating plate can be drastically reduced, a part of the human body placement object does not act as a large-area vibrating plate, and unnecessary low-frequency acoustic radiation is not generated. Therefore, the balance with the sound radiated by the speaker is not lost.

In this way, the electric / mechanical vibration converter is flattened.
Since the human body placement object can be laterally vibrated by attaching the flat surface to the surface of the human placement object, the apparent rigidity of the human placement object is increased, the vibration transmission efficiency is improved, and the vibration is transmitted well. Become. In addition, since the electric / mechanical vibration converter can be installed while avoiding the seated or lying position of the human body object, the electric / mechanical vibration converter can be damaged without giving the user a feeling of strangeness. Disappear. In addition, we made a thin electro-mechanical vibration converter,
Since it mounted in accordance with the surface of the human body mounting object, without requiring a height (thickness) direction of the location and space for attachment and nor impaired appearance without even impede the user.

[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 plan view showing the structure of an electric / mechanical vibration converter according to the present invention.

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

FIG. 4 is a view taken along the line BB of FIG.

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

FIG. 6 is a plan view showing a modification 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.

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

11 is an enlarged cross-sectional 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.

21 is a side 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 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 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 the nap bed 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. 32 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 2 Magnet 3 E-shaped core 3a Projection part 4 Housing 6 Damper 7 Damper 13 Coil 17 Acoustic equipment d Micro gap

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area H04R 5/02 G

Claims (1)

[Claims] 1. A rod-shaped magnetic body on the inner wall of a flat housing.
It was fixed, each of the E-shaped magnetic body on the side surface of the magnetic body of said rod-like
The protruding ends are made to face each other with a minute gap, and the E-shaped magnetic
While supporting the body to the housing via a damper ,
Electricity characterized by winding a coil that receives a low-frequency current such as an audio signal and connecting the coil to a low-frequency signal source.
Mechanical vibration converter.