WO2009154195A1

WO2009154195A1 - Mole repelling device

Info

Publication number: WO2009154195A1
Application number: PCT/JP2009/060932
Authority: WO
Inventors: 善行矢野
Original assignee: Yano Yoshiyuki
Priority date: 2008-06-19
Filing date: 2009-06-16
Publication date: 2009-12-23
Also published as: JP2011172487A

Abstract

A mole repelling device which is capable of certainly providing a mole avoidance effect by vibration over a wide area, and which can be easily maintained and stably used for a long period. The mole repelling device (1) comprises a vibration generating unit formed of an electrodynamic vibration-generating unit (2) and a vibration transmission unit (3) having a plurality of metal piles (31) projecting from the ground at intervals therebetween and metal connection bars (32) for so interconnecting the above-the-ground parts of the piles that all the piles are joined together. The vibration-generating unit (2) is excitably connected to the above-the-ground part of any pile (31) or any connection bar (32) of the vibration transmission unit (3).

Description

Mole repelling device

The present invention relates to a mole repelling device used in a field, a park, a garden, etc. for the purpose of driving away or moving away moles.

Mole invades fields, etc. in search of earthworms and larvae that serve as food, but when burrows (tunnels) are dug out, plant seedlings are not rooted, plant roots are cut, Serious damages such as wild mice invading the burrows eat and destroy root vegetables in the ground.

In view of this, several means have been proposed for preventing the mole from being driven out of the field or approaching it, one of which is to use a repellent that generates an odor that the mole dislikes (for example, See Patent Document 1 below).
However, such a repellent is not sufficient in terms of sustainability of the effect, and in order to obtain a mole repellent effect continuously over a wide range, a large amount of repellent is required, and organic cultivation is not possible. There was a tendency to refrain from using it in fields where it was conducted.

The other means uses the characteristics of moles that are extremely sensitive to vibration, and consists of a pile that incorporates a vibration generator such as a vibration motor and a battery, and is used by sticking it to the ground. A repelling device (see, for example, Patent Document 2 below).
However, in the case of the above-mentioned device, since the range of the repelling effect due to vibration is limited and it is necessary to frequently replace the battery, it is difficult to maintain and it is difficult to use continuously for a long time. There was a problem of being.

Japanese Patent Laid-Open No. 6-1705 US Pat. No. 6,157,594

An object of the present invention is to provide a mole repelling device capable of reliably obtaining a mole repelling effect due to vibration over a wide range.
Another object of the present invention is to provide a mole repelling device that is easy to maintain and can be used continuously over a long period of time.

The mole repelling device according to the present invention connects at least one vibration generating unit, a plurality of metal piles protruding from the ground at an interval from each other, and the ground portions of the piles so that all the piles are connected together. The vibration generating unit is connected to a ground portion of one of the piles of the vibration transmitting unit or the connecting rod so as to be able to vibrate.

According to the mole repelling device of the present invention, the vibration generated by the vibration generating unit is transmitted to the ground through the vibration transmitting unit having a plurality of piles and connecting rods, so that the mole repelling effect can be ensured over a wide range. can get.
Therefore, especially this invention can be used conveniently in the comparatively large field etc. which perform organic cultivation. However, in the case of the mole repelling device of the present invention, it can be easily applied to fields, parks, gardens, etc. of various sizes by appropriately increasing or decreasing the number of piles and connecting rods constituting the vibration transmission unit. .

In the mole repelling device according to the present invention, there is a case where a connecting rod holding portion is provided on the ground portion of each pile, and one or more connecting rods are fixed to the connecting rod holding portion by a fixing means.

In the above case, the connection work between the ground portion of the pile and the connecting rod is facilitated. Moreover, since the structure of a pile can also be simplified, cost can be suppressed.
The connecting rod holding portion may be provided at an arbitrary level of the pile as long as it is a ground portion, but is usually provided at the upper end portion of the pile. The connecting rod holding part is constituted by, for example, a horizontal upper end part of a pile bent into a substantially L shape (see FIG. 5). Moreover, a connection rod holding | maintenance part may be comprised by the perpendicular | vertical upper end part of a straight pile (refer FIG. 15).
Examples of the fixing means include one provided with at least one connecting rod pressing metal fitting and screw means for fixing the connecting rod holding metal fitting to the connecting rod holding portion of the pile. According to this fixing means, the fixing operation of the connecting rod to the ground portion of the pile can be easily performed.
In addition, the connecting rod holding portion may be configured by a metal cylinder that is horizontally fixed to the ground portion of the pile and into which the connecting rod is fitted. One metal cylinder may be provided, or two metal cylinders may be provided so as to cross each other. The latter is preferably used when connecting the connecting rods in a cross shape. The connecting rod fitted in the metal cylinder can be fixed by, for example, a set screw screwed into a screw hole in the cylinder peripheral wall.

The number and arrangement of the connecting rods are appropriately determined according to the number and arrangement of the piles.
The connecting rods are usually arranged one by one between two adjacent piles, but may be arranged so as to straddle three or more piles.
At the corners and intersections of the vibration transmission unit, the intersections of the connecting rods are usually fixed to the ground part of the pile (see Fig. 6). However, depending on the conditions, the vibration transmission rate of the pile is significantly reduced. It can happen. In such a case, it is only necessary to arrange the intersections of the connecting rods so as to avoid the piles and to directly connect the connecting rods (see FIGS. 7 and 8), thereby avoiding a decrease in the vibration transmission rate of the piles. .

The material of the pile and connecting rod is not particularly limited as long as it is a metal, but preferably iron having excellent vibration transmission is used.

The shape of the pile is not particularly limited, but is preferably formed from a flat bar. Since flat bars are generally less rigid than round bars and square bars, if they are used as piles, resonance is likely to occur, leading to improved vibration transmission.
The lower end of the pile is usually processed into a tapered shape so that it can be easily stabbed into the ground.
The pile may be configured to protrude vertically to the ground in addition to being configured to protrude vertically to the ground. In the case of the latter, even if the stakes are pushed right next to the plant so as to obtain a greater mole repellent effect on the plant planted in the field, it does not interfere with watering, fertilization, weeding and other work.

In the mole repelling device according to the present invention, the vibration generating unit is preferably constituted by an electrodynamic vibration generating device including an electromagnetic exciter, a power amplifier, an oscillator, and a power source.

If an electrodynamic vibration generator as described above is used as the vibration generating unit, it is possible to stably generate desired vibration over a long period of time, and thus the mole repellent effect due to vibration can be maintained over a long period of time. Can be obtained reliably.

The power source of the electrodynamic vibration generator is not particularly limited, but preferably a solar power generator and a storage battery that stores electric energy obtained by the solar power generator are used.

If the solar power generation device and the storage battery as described above are used as the power source of the electrodynamic vibration generator, for example, even in fields where it is difficult to secure a commercial power source, there is no troublesome maintenance such as battery replacement. Thus, it is possible to continuously drive the apparatus at a relatively low cost.

In the mole repelling device according to the present invention, it is preferable that the electrodynamic vibration generator further includes a variable frequency controller with a timer function.

By adding a controller as described above, it is possible to intermittently output or stop signals, thereby saving power. Moreover, if the frequency variable controller with a timer function is set so as to change the frequency of the signal current output from the oscillator as appropriate, it is possible to avoid a decrease in the repelling effect due to the mole getting used to a certain vibration.

In the mole repelling device according to the present invention, when using an electrodynamic vibration generator having a variable frequency controller with a timer function, the controller is set to gradually increase and / or decrease the frequency of the signal current output from the oscillator. May have been.

As a result of repeated experiments by the present inventor, when the frequency of the signal current output from the oscillator is gradually increased or decreased within a certain range, the position of the pile exhibiting strong vibration strength may move over time. all right. Therefore, if this phenomenon is utilized, it can be considered that the mole repels the mole repelling effect due to getting used to the vibration of a certain pattern.

The frequency may be gradually increased and / or decreased within a range in which sufficient vibration strength is obtained in each pile, but is preferably set within a range of 20 to 100 Hz.
Further, the speed at which the frequency is gradually increased and / or gradually decreased may be set as appropriate within the range in which the above effect is obtained, but is preferably set to 0.1 to 2 Hz / sec.

In the mole repelling device according to the present invention, a connecting rod connecting portion may be provided on the surface side of the diaphragm of the electromagnetic exciter.

If the electromagnetic exciter is provided with a connecting rod connecting portion as described above, the diaphragm of the electromagnetic exciter and the ground portion of the pile can be connected easily and reliably via a metal connecting rod. Can do.

The connecting rod connecting portion provided in the electromagnetic exciter is constituted by, for example, a metal hook plate that is bent so that the lower portion is fixed to the surface side of the diaphragm of the electromagnetic exciter and the upper portion is hooked on the connecting rod. (See FIGS. 10 and 11).

If the connecting rod connecting portion is formed of the metal hook plate as described above, its manufacture is easy and the cost can be reduced. Further, according to the hook plate, the electromagnetic exciter can be connected to the connecting rod only by being hooked to the connecting rod, so that the connection work is simple and the desired vibration strength can be obtained in each pile. It is also possible to easily move the electromagnetic exciter.
The connecting rod connecting part provided on the electromagnetic exciter is fitted with the other end of the connecting rod with one end or peripheral surface fixed to the surface of the diaphragm of the electromagnetic exciter and one end connected to the ground part of the pile. It can also be constituted by a metal cylinder to be put. In this case, it is only necessary to attach the electromagnetic exciter to the ground portion of the pile, so that the electromagnetic exciter can be easily arranged at a height suitable for connection with the connecting rod.

It is a top view which shows the outline of the mole removal apparatus which concerns on the 1st Embodiment of this invention. It is a vertical sectional view of the mole repelling device of the first embodiment. It is a vertical sectional view which expands and shows a part of vibration transmission unit of a mole repelling device. It is a perspective view which decomposes | disassembles and shows the pile and connecting rod fixing means of a vibration transmission unit. It is a perspective view which shows the state which fixed the two connecting rods in series to the connecting rod holding part of a pile. It is a perspective view which shows the state which fixed the two connecting rods to the connecting rod holding part of the pile in the cross shape. It is a perspective view which shows the other aspect which fixes two connection rods in cross shape. It is a vertical sectional view showing another mode of fixing two connecting rods in a cross shape. It is a vertical sectional view showing an outline of a vibration generating unit of a mole repelling device. It is a perspective view which shows the state which connected the electromagnetic vibrator of the vibration generation unit to the connecting rod. It is a vertical sectional view showing an electromagnetic vibrator in an enlarged manner. It is a top view which shows the outline of the mole repelling apparatus which concerns on the 2nd Embodiment of this invention. It is a vertical sectional view of the mole repelling device of the second embodiment. It is a perspective view which decomposes | disassembles and shows the pile and connecting rod fixing means of a vibration transmission unit. It is a perspective view which shows the state which fixed the two connecting rods in series to the connecting rod holding part of a pile. It is a perspective view which shows the outline of the experimental apparatus of the mole repelling apparatus used in the Example. It is a graph which shows the relationship between the frequency of the signal current output from an oscillator, and the vibration intensity in a No. 10 pile. It is a graph which shows the vibration intensity for every frequency in each pile.

1 to 11 show a first embodiment of the present invention. In the following description of this embodiment, “front” refers to the top of FIG. 1, “back” refers to the bottom of FIG. 1, and “left and right” refers to the left and right of FIG. .

The mole repelling device (1) of this embodiment is installed in a field having a plurality of left and right cocoons (F) in which seedlings (P) such as vegetables are planted, and includes one vibration generating unit ( 2) and the ground portions of the piles (31) are connected so that a plurality of iron piles (31) and all the piles (31) thrust against the ground at intervals in front and rear or left and right are connected to one. And a vibration transmission unit (3) having a plurality of iron connecting rods (32). The vibration generating unit (2) is connected to the connecting rod (32) located at the left rear portion of the vibration transmitting unit (3) so as to be vibrated.

As shown in FIG. 1 and FIG. 2, four piles (31) are provided at equal intervals in the front-rear direction between the two left ridges (F) and between the two right ridges (F). It is thrust and one is thrust at the rear end of the center ridge (F). And the ground part of the pile (31) adjacent to the front and back of each right and left side is connected by the connecting rod (32), and the ground part of the pile (31) adjacent to the left and right rear side is the connecting rod ( 32).
In addition, the number and arrangement | positioning of a pile (31) can be suitably changed according to the size, shape, etc. of a field, and the number and arrangement | positioning of a connection rod (32) are also changed in connection with it.

As shown in FIGS. 3 and 4, the pile (31) is formed of a flat bar bent into a substantially L shape. The horizontal upper end of the flat bar constitutes a connecting bar holding part (311). The connecting rod holding portion (311) has a screw hole (311a). The lower end of the pile (31) is cut into a tapered shape so that it can be easily pushed against the ground.

The connecting rod (32) is formed from a solid rod having a circular cross section.

FIG. 5 shows a state in which two connecting rods (32) extending in the front-rear direction or the left-right direction are fixed in series to the connecting rod holding portion (311) of the pile (31) by the fixing means. .
The fixing means includes a connecting rod pressing metal fitting (4) and screw means for fixing the connecting rod pressing metal fitting (4) to the connecting rod holding portion (311).
The connecting rod holding metal fitting (4) has a substantially U-shaped cross section including a base plate (41) having a screw hole (411) in the center and a pair of leg plates (42) extending downward from both edges of the base plate (41). It has a shape that can hold two connecting rods (32) arranged in parallel at a slight distance from above.
The screw means is constituted by a male screw member (5) having a handle (51) at the upper end.
The male screw member (5) is screwed into the screw hole (411) of the base plate (41) and passes between the two connecting rods (32) pressed by the connecting rod pressing metal fitting (4). It is screwed into the screw hole (311a) of the holding portion (311), and the connecting rod (32) is fixed to the connecting rod holding portion (311) by its tightening force.

FIG. 6 shows a state in which two connecting rods (32) orthogonal to each other at the corner portion of the vibration transmitting unit (3) are fixed to the connecting rod holding portion (311) of the pile (31) by the fixing means. Is.
The fixing means is composed of two connecting rod press fittings (4) and a male screw member (5) which are stacked one above the other. Specifically, first, the end of the first connecting rod (32) extending in the front-rear direction is arranged on the connecting rod holding portion (311), and the connecting rod (32) is the first connecting rod. It is pressed from above by the presser fitting (4). Further, an end portion of the second connecting rod (32) extending in the left-right direction is arranged on the base plate (41) of the metal fitting (4), and the connecting rod (32) is a second connecting rod holding metal fitting. It is pressed from above by (4). The male screw member (5) is connected to the screw hole (411) of the second metal fitting (4), the screw hole (411) of the first metal fitting (4), and the screw hole ( The two connecting rods (32) are fixed to the connecting rod holding portion (311) in an intersecting manner by being screwed sequentially into 311a).

FIGS. 7 and 8 show other means for fixing the two connecting rods (32) orthogonally at the corner of the vibration transmission unit (3).
As shown in these drawings, the intersection of the two connecting rods (32) is arranged avoiding the ground portion of the pile (31). Specifically, for example, in FIG. 1, two connecting rods (31) fixed to the rear end portion of the center rod (F) and the connecting rod holding portion (311) thereof (see FIG. 1). 32) is moved slightly backward, and only the connecting rod (32) extending in the front-rear direction is fixed to the connecting rod holding portion (311) of the pile (31) located at the rear ends of the left and right sides. If it does in this way, two connecting rods (32) can be arranged in the shape of a right in the back of the pile (31) located in the rear end of both right and left sides.
7 and 8 includes a metal horizontal holding plate (6), two connecting rod pressing metal fittings (4) disposed on both upper and lower sides of the holding plate (6), and a male screw with a handle (51). It consists of a member (5) and a female screw member (7) with a handle (71). The holding plate (6) is interposed between two orthogonal connecting rods (32). A screw hole (61) is formed in the center of the holding plate (6).
The first connecting rod (32) extending in the front-rear direction disposed on the upper surface of the holding plate (6) is pressed from above by the first connecting rod pressing metal fitting (4), and on the lower surface of the holding plate (6). The arranged second connecting rod (32) extending in the left-right direction is pressed from below by the second connecting rod press fitting (4). Then, the male screw member (5) is sequentially screwed into the screw hole (411) of the first metal fitting (4), the screw hole (61) of the holding plate, and the screw hole (411) of the second metal fitting (4). Then, when the tip is screwed into the female screw member (7), the two connecting rods (32) are connected and fixed orthogonally.
In the case of this fixing means, the screw hole (41) of the two connecting rod pressing metal fittings (4) and the screw hole (61) of the holding plate (6) are inserted through the male screw member (5) instead. It is good also as a mere through-hole for this.

As shown in FIG. 9, the vibration generating unit (2) includes an electromagnetic exciter (21), a power amplifier (22), an oscillator (23), a frequency variable controller with a timer function (24), and a power source (25). It comprises an electrodynamic vibration generator.

As each component of the electrodynamic vibration generator (2), a well-known and commonly used device can be used, and detailed description thereof is omitted. In the case of the present embodiment, a timer function is used. A feature point is to use a frequency variable controller (24) with a mark. That is, according to the controller (24), it is possible to intermittently output or stop a signal, thereby saving power. Also, considering the application to the mole repelling device, if a certain pattern of vibration continues, the mole will get used to it, and the mole avoidance effect may be reduced. In the case of the controller (24), the oscillator ( It is possible to set the frequency of the signal current from 23) to be changed as appropriate, so that the mole repellent effect can be maintained for a long time. For example, the controller (24) is set to gradually increase the frequency of the signal current output from the oscillator (23) at a speed of 0.1 to 2 Hz / sec within a range of 20 to 100 Hz. This gradual increase pattern is set to be repeatedly performed with an output stop time of, for example, about 10 minutes. It should be noted that the frequency may be set to be gradually decreased within the same range and speed as described above, or may be set by a combination of gradually increasing and gradually decreasing. In addition, the controller (24) may be set so that the device is operated in the above pattern only during the time when the activity of the mole is active, and the device is completely stopped during the other time.

The electrodynamic vibration generator (2) includes, as a power source (25), a solar power generation device (251) and a storage battery (252) that stores electrical energy obtained by the solar power generation device (251). . The storage battery (252) can also store electrical energy from a commercial power source via the charger (26) in preparation for cases where power generation by the solar power generation device (251) is insufficient. In addition, when installing in a place where a commercial power source can always be secured, it is of course possible to use only a commercial power source.
Of the electrodynamic vibration generator (2), the solar power generator (251) is usually installed independently at a place suitable for light reception. The electromagnetic exciter (21) is connected to the vibration transmission unit (3) as will be described later. Other device components, that is, a power amplifier (22), an oscillator (23), a frequency variable controller with a timer function (24), and a storage battery (252) are installed in an appropriate place on the ground or in the ground (B ) (See FIG. 1).

As shown in FIGS. 9 to 11, the electromagnetic exciter (21) includes a connecting rod connecting portion (212) on the surface side of the diaphragm (211).
The connecting rod connecting portion is made of an iron hook plate (212) which is bent so that the lower portion is fixed to the surface side of the diaphragm (211) of the electromagnetic vibrator (21) and the upper portion is hooked on the connecting rod (32). Become. The hook plate (212) includes a vertical wall portion (212a) having a lower back surface joined to the surface side of the diaphragm (211), an inclined wall portion (212b) extending obliquely upward from the upper end of the vertical wall portion (212a), It has a hook part (212c) bent in a hairpin shape from the upper end of the inclined wall part (212b) downward.
When the electromagnetic vibrator (21) is connected to the connecting rod (32), the hook portion (212c) of the hook plate (212) may be hooked on the connecting rod (32). Moreover, also when changing arrangement | positioning of an electromagnetic vibrator (21) as needed, it is only necessary to replace the hook part (212c) of a hook board (212) with arbitrary connection rods (32).

As shown in detail in FIG. 11, the electromagnetic exciter (21) includes a bottomed cylindrical yoke (214) opened to the side, and a ring-shaped magnet (215) attached to the bottom surface of the yoke (214). A pole piece (216) having a shaft portion (216a) joined to the magnet (215) and projecting toward the opening of the yoke (214) at the center, and wound around the shaft portion (216a) of the pole piece The coil (217), the diaphragm (diaphragm) (211) attached to the opening edge of the yoke (214) so as to cover the opening of the yoke (214), and the pole piece on the back side of the diaphragm (211) The shaft portion (216a) includes an armature (218) joined so as to face the front end surface. Although not shown, the coil (217) is connected to the power amplifier (22) by wiring. The lower part of the back surface of the vertical wall portion (212a) of the hook plate (212) is joined to the surface side of the diaphragm (211) via the connecting plate (219).

In the mole repelling device (1) of this embodiment described above, when the electrodynamic vibration generator (2) is driven, a signal current having a frequency preset by the controller (24) is generated from the oscillator (23). When this signal current is amplified by the power amplifier (22) and then passed through the coil (217) of the electromagnetic exciter (21), a force corresponding to the direction and magnitude of the signal current is applied to the coil (217). The diaphragm (211) vibrates by this force.
The vibration of the diaphragm (211) is transmitted through the hook plate (212) to the connecting rod (32) to which the diaphragm (211) is hooked, and further propagates from here to the entire vibration transmission unit (2). ) Vibration is transmitted to the ground through the tip.
Therefore, according to the mole repelling device (1), the vibration is reliably transmitted to the ground over a wide range of the field, even though the single electrodynamic vibration generating device (2) is used. And thereby a very high mole repellent effect.
Moreover, in the mole repelling device (1) of this embodiment, since the solar power generation device (251) is used as the power source of the electrodynamic vibration generating device (2), maintenance such as battery replacement is unnecessary, It can be used stably for a long time at a relatively low cost.
In addition, in the mole repelling device (1), since the frequency variable controller (24) with a timer function is incorporated in the electrodynamic vibration generator (2), power saving can be achieved. Moreover, if the controller (24) is set so as to gradually increase the frequency of the signal current output from the oscillator (23), the vibration intensity in each pile varies with time due to the resonance phenomenon, and the vibration of the same pattern does not continue. Therefore, the mole repellent effect can be sustained for a long time.

12 to 15 show a second embodiment of the present invention. In the following description regarding this embodiment, “front” refers to the top of FIG. 12, “back” refers to the bottom of FIG. 12, and “left and right” refers to the left and right of FIG. .

The mole repelling device (10) of this embodiment is installed in a park in which plants such as lawn and trees (T) are planted, and is separated from one vibration generating unit (2) in the front-rear direction. A vibration having a plurality of iron connecting rods (32) for connecting the ground portions of the piles (31A) so that the plurality of iron piles (31A) and all the piles (31A) are connected to one, which are projected on the ground. And a transmission unit (3). The vibration generating unit (2) is connected to a connecting rod (32) located at the rear end of the vibration transmitting unit (3) so as to be vibrated.
Depending on factors such as topography, the direction in which moles may enter may be identified. In this embodiment, it is assumed that moles enter mainly from the left side of the park. Therefore, if the mole repelling device (10) is installed at the left edge of the park, it is considered that the moles can be prevented from entering the park.

As shown in FIGS. 12 and 13, seven stakes (31A) are projected on the left edge of the park at equal intervals in the front-rear direction. And the ground part of the pile (31A) adjacent front and back is connected by the connection rod (32).
In addition, the number and arrangement | positioning of a pile (31A) can be suitably changed according to the size of a park, a shape, the penetration | invasion direction of a mole, etc., and the number and arrangement | positioning of a connection rod (32) are also changed in connection with it.

The pile (31A) is formed of a straight flat bar as shown in FIGS. The vertical upper end of the flat bar constitutes a connecting bar holding part (311). The connecting rod holding portion (311) has a screw hole (311a). The lower end of the flat bar is cut into a tapered shape.

The fixing means for fixing the connecting rod (32) to the connecting rod holding portion (311) of the pile (31A) is the same as in the first embodiment, the connecting rod pressing metal fitting (4), the connecting rod holding metal fitting ( 4) and a male screw member (5) with a handle (51) for fixing the connecting rod holding portion (311).
The male screw member (5) is screwed into the screw hole (411) of the connecting rod pressing metal fitting (4) and passes between the two connecting rods (32) pressed from the side by the metal fitting (4). The connecting rod holding portion (311) is screwed into the screw hole (311a), and the connecting rod (32) is fixed to the connecting rod holding portion (311) by the tightening force.

Other configurations of the mole repelling device (10) of this embodiment are substantially the same as those of the first embodiment.

According to the mole repelling device (10), the vibration generated from the vibration generating unit (2) is transmitted to the ground through the tips of the plurality of piles (31A) of the vibration transmitting unit (2), thereby allowing the vibration to the park. Mole intrusion can be reliably prevented for a long period of time.

With respect to the mole repelling device according to the present invention, a vibration strength test was performed as follows.
First, a total of 10 plastic buckets (B) containing soil were placed on the concrete floor at regular intervals. And the pile (31A) was protruded in the soil of each bucket (B), and the pile (31A) was connected with the connection rod (32). In the pile (31A), No. 1 to No. Numbers up to 10. No. No. 1 pile (31A) and No. 1 The hook plate (212) of the electromagnetic exciter (21) was hung on the connecting rod (32) connecting the two piles (31A).
The same vibration generating unit (2) and vibration transmission unit (3) as those in the second embodiment were used. More specifically, the pile (31A) was formed of flat iron having a thickness of 6 mm, a width of 16 mm, and a length of 500 mm. The connecting rod (32) was formed of an iron rod having a diameter of 9 mm and a length of 2750 mm. The pitch between the piles (31A) is 2650 mm. No. 1 pile (31A) No. The distance to 10 piles (31A) is 23.85 m.

Then, the electromagnetic exciter (21) is driven with electric power of about 1 W while gradually increasing the frequency from 20 Hz to 100 Hz over about 5 minutes. The voltage detected by the special electromagnetic vibration detector for the vibration in the ten piles (31A) was displayed as an output, and this was used as the vibration strength.
The results are as shown in FIG. 17, and the vibration intensity greatly fluctuated by gradually increasing the frequency. Although the display of the results was omitted, no. Also in each pile (31A) other than 10, the vibration intensity showed a large variation in different patterns by gradually increasing the frequency. No. located closest to the electromagnetic exciter (21). In the case of No. 1 pile (31A), the vibration intensity was highest when the frequencies were 44.1 Hz and 55.7 Hz.

Next, no. No. 1 in the case of driving the electromagnetic exciter (21) at the frequencies of 44.1 Hz and 55.7 Hz, which showed the highest values of the vibration strength in the pile 1 (31A). 1-No. The vibration strength in 10 piles (31A) was measured. A frequency of 44.1 Hz was measured twice in total. The result is as shown in FIG.
As can be seen from FIG. 18, the vibration intensity in each pile (31A) varied in various ways by changing the frequency. Further, when the frequency is 44.1 Hz, the vibration intensity is not attenuated as the distance from the electromagnetic exciter (21) increases, and the vibration intensity at the far pile (31A) is high. Furthermore, even with the same frequency of 44.1 Hz, different results were seen with time.
From the above results, the vibration intensity at each pile (31A) is the frequency, the state of the soil due to weather, temperature, humidity, etc., the tightening state of the male screw member (5) that fixes the connecting rod (32), etc. It is considered that it varies depending on various factors. However, if at least the electromagnetic exciter (21) is driven while gradually increasing or decreasing the frequency within a certain range, the position of the pile (31A) showing strong vibration intensity moves with time due to the resonance phenomenon. I found out that By utilizing this phenomenon, it is possible to avoid the mole becoming accustomed to the vibration of a certain pattern and the mole repellent effect of the present apparatus from diminishing.
Further, if the resonance phenomenon is used, vibration can be transmitted farther with less electric power, so that there is a great merit in terms of power saving and cost reduction.

It should be noted that each of the above embodiments is merely an example, and it is of course possible to implement the present invention with appropriate modifications without departing from the scope of the present invention described in the claims. is there.

(1) (10): Mole repelling device (2): Electrodynamic vibration generator (vibration generating unit)
(21): Electromagnetic exciter (211): Diaphragm (212): Hook plate (connecting rod connecting portion)
(22): Power amplifier (23): Oscillator (24): Frequency variable controller with timer function (25): Power source (251): Solar power generation device (252): Storage battery (3): Vibration transmission unit (31) (31A): Pile (311): Connecting rod holding part (32): Connecting rod

Claims

At least one vibration generating unit (2) and a plurality of metal piles (31) (31A) and all the piles (31) (31A) which are projected on the ground at intervals are connected to one. A vibration transmission unit (3) having a metal connecting rod (32) for connecting the ground portions of the piles (31) (31A), and the vibration generation unit (3) is one of the vibration transmission units (2). The mole repelling device, characterized in that it is connected to the ground part of the stakes (31) and (31A) or the connecting rod (32) so as to be vibrated.
A connecting rod holding portion (311) is provided on the ground portion of each pile (31) (31A), and one or more connecting rods (32) are fixed to the connecting rod holding portion (311) by fixing means. The mole repelling device according to claim 1, wherein:
The mole repelling device according to claim 1 or 2, wherein each pile (31) (31A) is formed of a flat bar.
The vibration generating unit (2) comprises an electrodynamic vibration generator comprising an electromagnetic exciter (21), a power amplifier (22), an oscillator (23) and a power source (25). The mole repelling device according to any one of 1 to 3.
The electrodynamic vibration generator (2) includes, as a power source (25), a photovoltaic power generation device (251) and a storage battery (252) that stores electrical energy obtained by the photovoltaic power generation device (251). The mole repelling device according to claim 4, characterized in that it is characterized in that:
The mole repelling device according to claim 4 or 5, wherein the electrodynamic vibration generating device (2) further comprises a variable frequency controller (24) with a timer function.
The mole repelling device according to claim 6, wherein the controller (24) is set to gradually increase and / or decrease the frequency of the signal current output from the oscillator (23).
The mole repelling device according to claim 7, characterized in that the controller (24) is set to gradually increase and / or decrease the frequency within a range of 20 to 100 Hz.
The mole repelling device according to claim 7 or 8, characterized in that the controller (24) is set to gradually increase and / or decrease the frequency at a speed of 0.1 to 2 Hz / sec.
The mole repelling device according to any one of claims 4 to 9, wherein a connecting rod connecting portion (212) is provided on a surface side of the diaphragm (211) of the electromagnetic exciter (21). .
The metal hook plate (212) in which the connecting rod connecting portion is bent so that the lower portion is fixed to the surface of the diaphragm (211) of the electromagnetic vibrator (21) and the upper portion is hooked on the connecting rod (32). The mole repelling device according to claim 10, comprising: