JPH0642472Y2 - Pest threatening device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention threatens a harmful animal such as a rodent by using mechanical vibration such as sound to release the harmful animal and prevent its invasion. The present invention relates to a pest threatening device.

(Prior Art) It is known that a pest such as a rat is extremely disliked by mechanical vibration such as sound having a specific frequency due to its nature.

Utilizing this property, a pest threatening device that emits mechanical vibrations at a frequency disliked by a pest that wants to prevent invasion and releases the pest is put to practical use.

However, such a conventional threatening device, after installation,
Although it works effectively for a relatively short period of time, when it is used for a long period of time, the harmful animal becomes accustomed to the mechanical vibration for intimidation, and the intimidating effect is almost lost.

In order to improve this, as shown in FIGS. 3 and 4, a threatening signal generator 1 for generating a threatening signal in which an impact sound portion I is randomly included in an oscillating frequency signal S that randomly changes, A pest threatening device including a transducer 2 for converting the threatening signal into mechanical vibration such as sound has been proposed. (Japanese Patent Publication No. 61-49).

Such a harmful animal threatening device randomly changes the oscillation frequency of the threatening signal in the vicinity of the frequency that the target harmful animal dislikes, and more frequently produces impact noise, so use it for a long time. Even if it continues, there is an advantage that the pest can be prevented from getting used to the threatening signal.

(Problems to be Solved by the Invention) However, even with such a pest threatening device, there is a problem that it cannot be denied to get used to the mechanical vibration for threatening that the device causes.

An object of the present invention is to provide a pest threatening device that can prevent a pest from becoming accustomed to mechanical vibration for threatening.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be described. The present invention provides a threatening signal in which an impulsive sound portion is randomly included in an oscillation frequency signal that changes randomly. In a threatening device for harmful animals, which comprises a threatening signal generator for generating a noise and a transducer for converting the threatening signal into mechanical vibration such as sound, a resonance / mixing box is provided in front of the transducer. And

(Operation) When a resonance / mixing box is provided in front of such a transducer, the intimidating mechanical vibration generated by the transducer resonates in the box, and various frequency components are mixed to generate a vibration of a new frequency component. Occur.
Therefore, according to the present invention, a more complicated threatening mechanical vibration is generated, and a harmful animal can be threatened and eliminated.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. The parts corresponding to those in FIG. 3 described above are designated by the same reference numerals.

As shown in the figure, the pest threatening device of this embodiment is similar to that of FIG. 4 described above, and a threatening signal for generating a threatening signal in which an impact sound part is randomly included in an oscillation frequency signal that randomly changes. It is composed of a generator 1 and a transducer 2 for converting the threatening signal into mechanical vibration such as sound. As for the transducer 2, a transducer main body 4 such as an ultrasonic transducer is arranged in a casing 3, and a diaphragm 5 driven by the transducer main body 4 is arranged on the front surface of the casing 3 as in the conventional case. .
The transducer 2 of the present embodiment is characterized in that the resonance / mixing box 6 is disposed on the front surface of the diaphragm 5 while being supported by the support frame 7.

When such a transducer 2 is used, the mechanical vibration of the oscillation frequency of the random change emitted from the vibrating plate 5 which the harmful animal to be discharged dislikes and the mechanical vibration of the impact sound randomly added thereto are emitted to the outside. At the same time, a part of it enters the resonance / mixing box 6 and resonates,
A new frequency component is generated by mixing, and mechanical vibration that changes more complicatedly than the conventional one can be generated.
Therefore, pests can be eliminated more effectively than before.

(Effect of the Invention) As described above, according to the pest threatening device of the present invention, the mechanical vibration of the random change oscillation frequency that the harmful animal to be discharged from the transducer dislikes, and the impact sound randomly added thereto. Mechanical vibrations are emitted to the outside, and some of them enter the resonance / mixing box to resonate, and are mixed to generate a new frequency component sound, which changes more complicatedly than the conventional one. It can emit mechanical vibrations. Therefore, according to the present invention, it is possible to more effectively exterminate pests and prevent their invasion.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an essential part of an embodiment of the device according to the present invention, FIG. 2 is a front view of the transducer of FIG. 1, and FIG.
FIG. 4 is a waveform diagram showing an example of a threatening signal, and FIG. 4 is a side view of a conventional device. 1 ... Threatening signal generator, 2 ... Transducer, 3 ...
… Casing, 4… Transducer body, 5… Vibration plate, 6… Resonance / mixing box, 7… Support frame.

Claims (1)

[Scope of utility model registration request] 1. A threatening signal generator for generating a threatening signal in which an impact sound part is randomly included in an oscillation frequency signal that changes at random, and a transducer for converting the threatening signal into mechanical vibration such as sound. A threatening device for a harmful animal, comprising a resonance / mixing box provided in front of the transducer.