JPH05223630A - Vibration detector - Google Patents

Abstract

PURPOSE:To detect vibration by a sound wave and fixed vibration in a compound manner with one vibration detector. CONSTITUTION:A vibration detector 12 is provided to detect vibration by a sound wave. A loose body 13 is provided. A frame body 14 is provided to hold the loose body 13 so as to be allowed to play with respect to the vibration detector 12. A sound wave such as voice is caught with the vibration detector 12 and vibration by the sound wave is detected. With the action of the fixed vibration from outside, the loose body 13 plays and vibration associated with the playing of the loose body 13 is checked with the vibration detector 12 to detect the fixed vibration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration detecting device for detecting vibration due to sound waves and solid vibration.

[0002]

2. Description of the Related Art For example, as toys, there are toys that move or make sound in response to input of sound such as voice.
With this, a microphone is embedded in a toy, and when a sound is detected by this microphone, a motor, a speaker, etc. are activated.

By the way, in the case of a dog toy, in addition to reacting to an external sound such as speaking, there is a demand to respond to a motion (vibration) of holding a person.

In such a case, it is necessary to embed a vibration switch, a vibration sensor, etc. in the toy together with the microphone.

For example, the vibration switch is shown in FIGS.
As shown in FIG. 3, a spring 3 having an oscillator 2 attached to the upper end thereof is erected on a substrate 1, and a contact terminal 4 is erected so as to surround the oscillator 2 with a gap.

By moving the toy in which the vibration switch is embedded, the vibrator 2 swings and comes into contact with the contact terminal 4, thereby closing the operating circuits such as the motor and the speaker, and restoring the spring 3. Then, the vibrator 2 separates from the contact terminal 4, so that the operating circuit is opened.

[0007]

SUMMARY OF THE INVENTION As described above,
When reacting to sound and solid vibration, it is necessary to use a microphone, a vibration switch, and a vibration sensor, respectively, which increases cost.

Particularly, in the case of the vibration switch, the operation is unstable because the elastic action of the spring 3 is utilized, and the cost is structurally high. Further, in the case of the vibration sensor, a dedicated circuit is required in addition to the circuit for the microphone, which increases the cost.

Therefore, it is an object of the present invention to provide a vibration detecting device capable of detecting vibrations due to sound waves and solid vibrations in a composite manner by a vibration detecting body such as a microphone.

[0010]

The present invention provides a vibration detection device 11 for detecting vibrations due to sound waves and solid vibrations.
Vibration detection body 12 for detecting vibration due to sound waves, and floating body 13
And a frame body 14 for holding the floating body 13 so as to be movable with respect to the vibration detecting body 12.

[0011]

In the present invention, the vibration detector 12 detects sound waves such as voice. At the same time, the moving body 13 floats in response to a slight movement of the object on which the vibration detecting device 11 is mounted, and the vibration detecting body 12 detects the vibration associated with the movement of the moving body 13 to detect solid vibration.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of one embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a sectional view of a vibration detecting device 11. The vibration detecting device 11 includes a vibration detecting body 12 for detecting a sound wave,
It is composed of a floating body 13 and a frame body 14 that holds the floating body 13 so as to be movable with respect to the vibration detecting body 12.

The vibration detecting body 12 is composed of a condenser type microphone, and the detecting portion is built in a cylindrical case 21. A sound collecting section 22 that picks up sound waves from one end surface of the case 21.
And a terminal portion 23 is provided on the other end surface, and a pair of lead wires 24 are connected to the terminal portion 23.

The floating member 13 is made of a metal ball.

The frame body 14 is formed of a synthetic resin in a cylindrical shape, a through hole 26 having a diameter smaller than the outer shape of the floating body 13 is formed at the center of the wall surface portion 25 on one end surface, and the vibration detecting body 12 is formed on the other end surface. An opening 27 to be fitted is formed. The through hole 26 is a closing member 28 such as a breathable felt or a diaphragm capable of transmitting sound waves.
Is blocked by.

After the loose body 13 is inserted from the opening 27 of the frame body 14, the vibration detecting body 12 is press-fitted and fixed in the opening portion 27 of the frame body 14. The floating body 13 is movably held in a floating space 29 formed between the inside and the inside.

FIG. 2 shows a motor drive unit using the vibration detecting device 11. Reference numeral 31 is a control circuit part, to which the vibration detecting device 11 is connected via a lead wire 24 and a battery. The body 32 is connected via a lead wire 33, and the motor 34 is connected via a lead wire 35.

The control circuit section 31 has a judgment circuit for judging the input of an electric signal from the vibration detection body 12, a switching circuit for turning on and off a power supply circuit from the battery body 32 to the motor 34, and an on state of the switching circuit for a certain period of time. It is equipped with a timer circuit and the like.

The battery body 32 has a pair of battery bodies 37 connected in series in a case 36, and an end face of the case 36 is provided with a main switch 38 for selecting activation / deactivation of a motor drive unit. ..

Next, the operation of this embodiment will be described.

The motor drive unit shown in FIG. 2 is incorporated in, for example, a dog toy, and the tail and the like are moved by driving the motor 34.

When the main switch 38 is turned on, when talking to a dog toy or clapping a hand, the sound wave is detected by the vibration detector 12 of the vibration detector 11.

Then, an electric signal from the vibration detector 12 is input to the control circuit section 31. When the control circuit unit 31 determines that the electric signal is input, the control circuit unit 31 turns on the power supply circuit from the battery body 32 to the motor 34 for a certain period of time. Therefore, the motor 34 rotates for a certain time, and the dog toy moves for a certain time.

When the dog toy is moved by holding it, the floating body 13 of the vibration detecting device 11 floats in the floating space 29, and the floating body 13 rolls or collides with the surface of the vibration detecting body 12. Then, the sound generated at that time is detected by the vibration detecting body 12.

Then, an electric signal from the vibration detector 12 is inputted to the control circuit section 31. When the control circuit unit 31 determines that the electric signal is input, the control circuit unit 31 turns on the power supply circuit from the battery body 32 to the motor 34 for a certain period of time. Therefore, the motor 34 rotates for a certain time, and the dog toy moves for a certain time.

Even with a slight movement of the dog toy, since the moving body 13 moves, the detection sensitivity is good and stable.

As described above, the vibration detecting device 11 allows the vibration detecting device 11 to detect both the vibration due to the sound wave and the solid vibration into one vibration detecting body.
Can be detected at 12.

Next, FIG. 3 shows another embodiment of the vibration detecting device 11 of the present invention. The vibration detecting body 12 of this embodiment is composed of a piezoelectric type microphone, a metal plate 41, a ceramic element 42 and a silver foil 43. The piezoelectric element 44 is formed by stacking. Metal plate
Lead wires 45 are connected to 41 and the silver foil 43, respectively.

The frame body 14 is composed of a box-shaped upper case 46 having an opened lower surface and a lower case 47 fitted to the lower surface of the upper case 46. The floating body 13 is provided at the center of the upper surface of the upper case 46. A through hole 26 having a smaller diameter than the outer shape of the above is formed.

Then, after the floating member 13 is placed inside the upper case 46, the piezoelectric element 44 is fitted to the lower surface of the upper case 46 and the lower case 47 is fitted and fixed. Both ends of the piezoelectric element 44 are sandwiched, and a floating body 13 is provided in a floating space 29 formed between the piezoelectric element 44 and the inside of the upper case 46.
Is movably held.

Also in the case of this embodiment, the piezoelectric element 44 vibrates due to the input of sound, and the vibration detecting device
Since the piezoelectric element 44 vibrates when the moving body 13 rolls by moving the dog toy with the built-in 11 and an electric signal is output from the piezoelectric element 44, it is possible to detect both vibration due to sound waves and solid vibration. You can

The floating body is not limited to a sphere but may be a polyhedron.

The vibration detecting device 11 is not limited to being applied to a toy.

[0035]

According to the present invention, the sound wave can be detected by the vibration detecting body, and the floating body floats in response to a slight movement of the object equipped with the vibration detecting device, which accompanies the floating body. Vibration can be detected by the vibration detector, and solid vibration can be detected stably with high sensitivity. Therefore, it is possible to provide a vibration detection device capable of detecting vibration due to sound waves and solid-state vibration in a composite manner with one vibration detection body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a vibration detection device of the present invention.

FIG. 2 is a configuration diagram of a motor drive unit using a vibration detection device.

FIG. 3 is a sectional view showing another embodiment of the vibration detecting device of the present invention.

FIG. 4 is a sectional view of a conventional vibration switch.

FIG. 5 is a plan view of a conventional vibration switch.

[Explanation of symbols]

 11 Vibration detector 12 Vibration detector 13 Floating body 14 Frame

Claims (1)

[Claims] 1. A vibration detection device for detecting vibrations due to sound waves and solid vibrations, comprising: a vibration detection body for detecting vibrations due to sound waves; a floating body; A vibration detecting device, comprising: a holding frame.