JPH0513112Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a movable stage provided with a plurality of vibration devices that generate vibrations or deep bass sounds.

(Prior Art) Conventionally, as shown in FIG. 6, a horizontally long stage main body 10 is formed by arranging a plurality of diaphragms 12 in two rows to which a vibrating device 11 is attached.
A stage is known that outputs a music signal from an audio device (not shown) and generates vibrations or heavy bass from each of the diaphragms 12.

In the conventional stage, since no vibration isolating member is interposed between the connecting parts of each diaphragm 12, the vibrations generated from the vibration device 11 of each diaphragm 12 are transmitted between the adjacent diaphragms 12. There was a problem in that they resonated with each other, making it impossible to obtain appropriate vibrations from the entire stage body 10.

In order to solve these problems, a practical application was made in 1983.
The stage described in No. 40184 (see Utility Model Application Publication No. 153084/1984) has been proposed.

This stage has a vibration device installed on a plurality of diaphragms constituting the stage, and a vibration isolating member is interposed between the diaphragms. This vibration isolating member prevents mutual resonance between the diaphragms.

(Problem to be solved by the invention) In the latter stage, aerobics may be performed in conjunction with audio signals and vibrations or heavy bass sounds synchronized with the audio signals, but as a result of this exercise, the diaphragm A large vibration shock is generated, and this vibration shock is directly applied from the diaphragm to the vibrating device. This has caused problems in that the vibrating device may be damaged or malfunction.

In view of the above-mentioned conventional problems, the purpose of the present invention is to provide a stage that can prevent damage and failure of the vibrating device or speaker device, and can efficiently propagate vibrations generated from the vibrating device or the speaker device to the stage body. It is in.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention uses a vibrating device that generates vibrations or deep bass sounds, or a vibrating body that generates vibrations or deep bass sounds and generates an audio signal of an audible frequency. In a stage in which a plurality of speaker devices each having a speaker body are provided on a stage main body, each of the vibration devices or each speaker device is fixed to a synthetic resin resonance plate at a distance from the stage main body, and the resonance plate is attached. It is attached to the stage main body via a panel, and the stage main body is separated between each of the vibration devices or each of the speaker devices at a predetermined interval, and a vibration isolating member is interposed in the gap. Features.

(Function) According to the present invention, each vibration device or each speaker device is fixed to a synthetic resin resonance plate separated from the stage body, and the resonance plate is attached to the stage body via a mounting panel. The vibration shock generated on the stage main body is propagated through the mounting panel and the resonance plate, and this vibration shock is not directly applied to the vibrator or the like.

In addition, since the vibrations generated by the vibration device propagate to the stage body via the resonance plate, the resonance plate suppresses the attenuation of the vibrations generated by the vibration device, etc., and these vibrations are efficiently propagated to the stage body. do.

(Embodiment) Figures 1 to 5 show an embodiment of the present invention, in which 20 is a horizontally long plate-shaped stage body, which is arranged in two rows with a predetermined gap 20a in each side in the lateral direction. It consists of eight diaphragms 21 and a rubber vibration isolating member 22 interposed in the gap 20a. Each of the diaphragms 21 is made up of a cork plate 23 and a plywood 24 glued to the lower surface of the cork plate 23. A groove 25 is provided on the opposing periphery of each plywood 24, and the groove 25 is provided with a barrier. A swinging member 22 is fitted.

The legs 30 support the stage main body 20 on the floor A, and are composed of a vertically long wooden square piece 31 and a rubber-based buffer member 32 bonded to the lower surface of the square piece 31 to buffer vibrations and shocks. Cushion material 33 is interposed between the upper surface and the lower surface on both sides of each diaphragm 21 to bond them together.

40 is the diaphragm 21 of the stage main body 20
A mounting member for a vibration device 50, which will be described later, is attached to the lower surface of the panel 41. It is made up of a mounting panel 41 made of foamed polyethylene, and a resonant plate 42 made of a synthetic resin with high hardness adhered to the lower surface of the panel 41. The resonance plate 42 is provided with escape holes 41a and 42a for mounting the vibration device 50, respectively.

50 is a vibration device that generates vibrations or deep bass sounds;
It is fixed to the resonance plate 42 of the mounting member 40. Further, this resonance plate 42 is fixed to the diaphragm 21 via a mounting panel 41. This mounting structure of the vibrating device 50 allows the vibrating device 50 to be placed below the diaphragm 21 and spaced apart from the diaphragm 21 . This vibration device 5
The structure of 0 is the one already proposed by the applicant as Utility Model Application No. 1983-048164. That is, as shown in FIG. 4, its structure includes a flat donut-shaped permanent magnet 53 and an excitation coil formed by winding a coil 55 around an iron rod 54 in a case 52 constituting a vibrating section 51. , the permanent magnet 53 is attached to the case 52
The excitation coil is fixed to the leaf spring 56 and the excitation coil is connected to the leaf spring 56 to form a vibration effecting body 57. In addition, the vibration effecting body 57 is opposed to the permanent magnet 53 with a predetermined vibration permissible space, and the vibration effecting body 57, that is,
A lead wire 58 is connected to the excitation coil.

Further, the electric circuit of the stage will be explained based on the block diagram of FIG. That is, 60 is the player,
A sound source such as a radio or a tape recorder, 61 is a preamplifier, 62 is a power amplifier, and the sound source 6 is
0 audio signal is amplified. 63a and 63b are left and right speakers connected to the power amplifier 62. Reference numeral 64 denotes an amplifier that amplifies the output signal of vibration or heavy bass connected to the sound source 60, which includes a mixing circuit 65 that mixes the output signal, a preamplifier 66 that amplifies the output signal from the mixing circuit 65, and a preamplifier 66 that amplifies the output signal from the mixing circuit 65. The power amplifier 68 includes an equalizer 67 that raises or lowers the low frequency part of the signal according to the sound field environment, and a power amplifier 68 that amplifies the signal from the equalizer 67. Connected to 50.

In the present invention, as described above, the stage main body 20 is separated into eight diaphragms 21 with a predetermined gap 20a therebetween, and a vibration isolating member 22 made of rubber is interposed in the gap 20a between the diaphragms 21. , each diaphragm 2
The vibrations or heavy bass generated from each vibration device 50 of 1 are buffered by the vibration isolating member 22 and are not transmitted to other diaphragms 21, and the vibrations etc. generated from each diaphragm 21 do not resonate with each other. There is no.

Further, since a rubber-based buffer member 32 for damping vibration and impact is provided at the lower part of the leg 30 that supports the stage main body 20, the vibration generated by each of the diaphragms 21 is damped by the buffer member 32. , floor A
There is no communication. Therefore, even when the stage is installed on a second or higher floor, the vibrations will not be transmitted to lower floors. Furthermore, even if a person performs a dance exercise or the like on the stage main body 20, the shock applied to the ankle is buffered by the buffer member 32 and the cushion member 33, thereby preventing so-called min-splint injury, which is an injury to the ankle. Ru.

Further, although vibrations or shocks are generated in the stage main body 20 due to dance movements or the like, this vibration shock is propagated through the resonance plate 42 and the panel 41, and the vibration shock is not directly applied to the vibrating device 50. Therefore, the vibration device 50 will not be damaged by this vibration impact.

Furthermore, since the vibration device 50 is spaced apart below the stage body 20, the vibrations generated by the vibration device 50 are not directly propagated to the stage body 20.
However, in this embodiment, the vibrations generated by the vibration device 50 are transmitted to the stage body 2 through the resonance plate 42.
Since the vibration propagates to 0, the attenuation of this vibration is suppressed as much as possible by the resonance plate 42.

In the above embodiment, the vibration device 50 is replaced by the vibration plate 21.
However, the same effect can be obtained when a speaker device (not shown) is attached to the diaphragm 21, which includes a vibrating body that generates vibrations or deep bass, and a speaker body that generates an audio signal at an audible frequency. .

(Effects of the invention) As explained above, according to the invention, each vibration device or each speaker device is fixed to a synthetic resin resonance plate separated from the stage body, and the resonance plate is attached via a mounting panel. Since it is attached to the stage body, the vibration shock generated on the stage body is propagated through the mounting panel and the resonance plate, and this vibration shock is not directly applied to the vibrator or the like. Therefore, the vibration device and the like will not be damaged or malfunction due to the vibration shock generated in the stage body.

In addition, since the vibrations generated by the vibration device propagate to the stage body via the resonance plate, the resonance plate suppresses the attenuation of the vibrations generated by the vibration device, etc., and these vibrations are efficiently propagated to the stage body. do. Therefore, it is possible to obtain a sound sensation that is the same as when a vibration device or the like is installed directly on the stage body.

[Brief explanation of the drawing]

The drawings are for explaining the present invention, and FIGS. 1 to 5 show the stages of the present invention.
The figure is a perspective view, FIG. 2 is an enlarged sectional perspective view with some parts omitted, FIG. 3 is an enlarged perspective view with some parts omitted showing the main parts of the present invention, FIG. The figure is a block diagram showing an electric circuit, and FIG. 6 is a perspective view showing a conventional stage. In the figure, 20... Stage main body, 20a... Gap, 22... Vibration isolating member, 50... Vibration device.

Claims (1)

[Claims for Utility Model Registration] (1) A vibrating device that generates vibrations or deep bass sounds, or a speaker device that includes a vibrating body that generates vibrations or deep bass sounds and a speaker body that generates audio signals at an audible frequency. In a stage provided with a plurality of stages on a stage body, each of the vibration devices or each of the speaker devices is fixed to a synthetic resin resonance plate at a distance from the stage body, and the resonance plate is attached to the stage body via a mounting panel. Attachment: A stage characterized in that the stage main body is separated between each of the vibration devices or each of the speaker devices at a predetermined interval, and a vibration isolating member is interposed in the gap. (2) Utility model registration claim 1, characterized in that at least a portion of the foot portion supporting the stage body in the vertical direction is formed of a buffer member that buffers vibrations and shocks.
Stages listed in section.