JP2000253798A - Small animal catch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repeatedly usable small animal catch device without using a chemical substance such as a rodenticide, without causing a defective operation and without requiring external power energy. SOLUTION: This small animal catch device is equipped with a box body 1 having an open top, a fall body 2 which is supported by guide members 11 vertically installed on the box body 1 and can be dropped from an upper waiting position producing a gap H between the fall body and the box body 1 into the box body 1, a footplate 6 laid in a raised state of one end part on the bottom of the box body 1, a ribbon member 3 having one end fixed to the fall body 2 and the other end dropped downward through a construction member 12 higher than the fixation position and an engaging and disengaging mechanism C arranged between an end part connected to the ribbon member 3 and a projected part of the footplate 6. When the fall body 2 is positioned at the upper waiting position, the mechanism C supports the projected part of the footplate 6 raised from the bottom of the box body by a moment based on the weight of the fall body 2 acting through the ribbon member 3, retains the fall body 2 at the upper waiting position and keeps the footplate 6 in a raised state of one end part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small animal trap capable of capturing small animals such as rats and weasels without using chemical substances such as rodenticides and adhesives, and comprising a power energy other than natural fall motion. The present invention relates to a mechanical small animal trap such as a mouse which can be repeatedly used without using a mouse.

[0002]

2. Description of the Related Art For example, various methods have been devised since the history of rodents, which are a kind of vermin. There are the following four types. (B) A method of mixing a rodenticide into the bait. (B) A method of spraying a repellent. (C) A mouse trap that is attached to and adhered to an adhesive-backed mount. (D) A mouse trap that closes and traps the passage hole by the repulsive force of a spring or the like.

[0003] (A) is a method in which a chemical such as a coumarin preparation is mixed in a feed, and rats that have eaten the feed are poisoned. According to this coumarin preparation, since the visual acuity of the rat can be weakened, the mouse often comes out to a bright place and dies, and there is an advantage that the treatment of the dead body can be performed relatively easily. However, rats do not always die within human sight, but rather potent chemicals cause the inconvenience of rotting and maggots under the ceiling or under the rim, where carcass disposal is difficult. In addition, cats and dogs, which are pets, eat poison bait and may die. Furthermore, in recent years, it has been reported that mice resistant to poisons have appeared, and this method still has many problems.

[0004] On the other hand, the method (b) is a method in which a repellent containing an odor component which the rat dislikes is sprayed or applied to a place where the rat is likely to drop in so as to prevent the rat from approaching. . According to this method, there is an immediate effect, and the entry of a rat can be relatively easily prevented. However, since this method does not kill rats, it is necessary to keep spraying the repellent over a long period of time, which is not economical. This method is not the optimal method, as it may have adverse effects on the environment.

Further, in the mouse trap of (c), a strong adhesive is applied to the surface of a paper material or a plate material as a backing paper, and this is placed on a floor near a rat passage or a nest. In advance, the leg or the like of a mouse passing over the adhesive is attached and captured by the adhesive. However, the rat adhered to the mount was still alive, and it was not easy to dispose of it as garbage, and killing the mouse was a heavy burden for friendly people. Furthermore, the intelligence of rats is high, and when one rat is caught by this mouse trap, it learns this and the number of rats caught by selecting a site without a mount is reduced, and stickiness is also reduced. The agent deteriorates after a long period of time, resulting in a decrease in the murine adhesion effect due to the adhesion.

On the other hand, the mechanical mouse trap shown in the above (d) which does not use any chemicals such as rodenticides and adhesives as shown in the above (a), (b) and (c) is a mesh-shaped mouse trap. To provide a through hole in the case, and to close this through hole,
An opening / closing door biased by a spring is provided, and the opening / closing door is temporarily fixed with a locking metal, and a mouse attached to a part of the locking metal is pulled by a mouse, whereby the opening / closing door is set to the spring. Some are automatically closed by the urging force. However, in the mouse trap shown in (d), if the bait and the latch are not securely attached, the latch does not operate or the rat does not release the latch in the direction in which the latch is not released. Pulling the door or causing the door to not close due to foreign matter, rust, or other resistance causes an operation failure, and the door cannot be securely captured by closing the door reliably.

Therefore, the present invention does not use any chemicals such as rodenticides and adhesives as in the above-mentioned means (a) to (c), and furthermore, the mouse trap disclosed in the above (d). It does not cause frequent malfunctions like a vessel and does not require any power energy such as batteries or compressed air.
It is an object of the present invention to provide a trap for small animals such as rats that can be used repeatedly.

[0008]

According to the present invention, which has achieved the above object, there is provided a box having an opening at an upper portion, and a vertical member supported by a guide member provided upright on the box and having a vertical member. A drop body that can be dropped into the box body from an upper standby position where a gap is generated in the direction, a tread plate laid with one end floating on the bottom of the box body, and one end fixed to the fall body, A string member whose end is hung downward through a bridging member provided above the fastening position, and an engagement / disengagement mechanism provided between an end of the hung string member and the protrusion of the tread plate The stepping plate is lifted from the bottom of the box by a moment based on the weight of the fallen body acting via the string member when the fallen body is positioned at the upper standby position. To support the falling body in the upper standby position. Characterized in that it held in a state of floating one end of the footboard while.

Further, in the configuration according to the second aspect, the falling body is formed by a solid body.

Further, in the structure of the third aspect, the falling body is a hollow box having an opening formed in the bottom surface.

[0011] On the other hand, in the structure of the fourth aspect, the engaging and disengaging mechanism is connected to an end of the string member suspended downward and has a bent portion at a predetermined position, and protrudes from a side wall of the box. When the bent portion of the rod-shaped member is provided and is engaged, the rod has a support shaft on which a fulcrum of a moment acting on the rod-shaped member is formed based on the weight of the falling body, and at one end of the tread plate, A protrusion is provided that protrudes outward from a slit provided on a side wall of the box body, and the protrusion is sandwiched between a side surface of the slit and a rod-shaped member urged to one side by the moment. The one end of the step board is held in a floating state.

First, in the structure of the first aspect, when the falling body is at the upper standby position, a gap is formed in the vertical direction between the falling body and the upper edge of the box body, and the gap passes through the gap. It is assumed that rats can enter the inside of the box. In addition, the falling body is configured to fall along the guide member and reach the bottom of the box, so that the falling body can be smoothly moved without being caught by displacement or friction. Further, the falling body is configured to be suspended from the erection member connected to the upper part of the guide member to the upper standby position via a string member, and is connected to the engagement / disengagement mechanism via the string member.

On the other hand, a projection is provided at one end of a tread plate provided at the bottom of the box, and the one end provided with the projection is temporarily supported by an engagement / disengagement mechanism in a floating state. Therefore, the bait is scattered on the tread plate, and when the rat moves onto the tread plate, the tread plate is disengaged by the weight of the rat and descends by disengaging the engagement / disengagement mechanism. Further, a moment due to the weight of the falling body loaded via the string member is applied to the engagement / disengagement mechanism,
The projecting portion of the tread is temporarily supported by this moment.

When a rat rides on the tread and drops it, the moment balance of the disengagement mechanism is broken,
There is no support for the weight of the falling object supported via the string member, and the falling object freely falls on the tread plate and the rat.

On the other hand, according to the configuration of the second aspect, the mouse can be sandwiched between the bottom surface of the falling body and the bottom portion of the box (the upper surface of the tread plate). More preferably, it is recommended that the weight of the fallen object is set to be between 3 and 4 kg so that the internal organs of the rat do not come out of the skin without jumping out of the skin and that the rat is surely dead.

According to the third aspect of the present invention, the rat can be captured by trapping the mouse in the hollow portion of the falling body, and the mouse can be captured alive.

On the other hand, according to the structure of the fourth aspect, the engagement / disengagement mechanism comprises a support shaft and a rod-shaped member, and the support shaft protrudes from one side wall of the box so as to be substantially horizontal. A slit is formed below the installation position. Further, a bent portion is formed on the string-connecting side of the rod-shaped member, and the bent portion is brought into contact with the support shaft so as to be hooked thereon, thereby maintaining the dropped body at the upper standby position. The upper end of the rod-shaped member connected to the string member by these receives the tensile force of the string member (depending on the weight of the falling body),
A moment is applied to the rod-shaped member with the axis of the support shaft as a fulcrum. That is, above the fulcrum, a moment due to the tensile force of the string member acts, and below the fulcrum of the rod-shaped member, an urging force is applied to the lower end portion of the rod-shaped member in a rotating direction about the fulcrum. . Then, the projecting portion of the tread plate projecting from the slit by this urging force is temporarily fixed at the standby state position.

That is, in this rod-shaped member, a moment for keeping the tread plate in the standby state at the lower part of the fulcrum is applied, and the dropped body is held at a position where the drop body is pulled up at the upper part of the fulcrum. To maintain a balanced state of the moments, forming a standby state in the small animal trap.

Therefore, when the treadle is stepped down by the mouse and descends, the above-mentioned moment is disturbed, the bar-like member is separated from the support shaft, the lifting by the engagement / disengagement mechanism is released, and the falling body falls freely and the rat falls. It gets caught between the body and the box.

[0020]

FIG. 1 is a perspective explanatory view showing an embodiment of a mouse trap as an example of a small animal trap according to the present invention. FIG. 2 is a partial cross section of the mouse trap shown in FIG. It is a side part explanatory drawing. The main components of the mouse trap are a box 1 and a falling body 2 which are formed in a rectangular parallelepiped (including those having a square shape in plan view), and the box 1 is opened upward. And the falling body 2 is constituted by a solid member (of course,
Having a bottom plate surface 29). The box 1 and the drop body 2 may be formed of any material such as metal, synthetic resin material, and ceramic material. However, it is preferable to use wood, which provides good workability and can be provided at low cost. In particular, oak is most preferable because it is strong and durable, and has little deformation due to drying.

The size of the falling body 2 in plan view is
.., 14 of the box 1 are formed to be smaller than the portion surrounded by the side walls 14, and the falling body 2 is formed to have a size that fits completely in the side wall 14 of the box 1. Still preferably, the side wall 1
4 and the lateral surface of the falling body 2
Is formed, and the gap S is selected to be 10 to 15 mm. When the falling body 2 falls as described later, the air in the hollow portion of the box 1 smoothly escapes from the gap S, and 2 shall fall quickly. Further, when the falling body 2 is lifted and set at the upper standby position, a gap H of 50 to 100 mm is formed in the vertical direction between the upper edge position of the box body 1 and the bottom position of the falling body 2. It is configured such that a rat can enter the box 1 from the gap H.

On the other hand, two guide members 11, 11 are erected on a pair of side walls 14, 14 facing each other in the box 1, and the upper portions of the guide members 11, 11
It is linked by two. Notches 23, 23 to be fitted to the guide members 11, 11 are formed on the side of the falling body 2, and these guide members 11, 11 and the notches 23, 23 are formed.
23 is movably fitted. At the time of this fitting, a gap of several millimeters is provided between both members so that when the falling body 2 falls, the falling body is not hindered by frictional resistance, and the falling body 2 is accurately positioned by the guide members 11. It is configured to fall in position and posture.

A guide hole 12a having a rectangular cross section is formed substantially at the center of the bridging member 12.
The guide rod 21 penetrating through a is set up at the center of the falling body 2. The guide rod 21 and the guide hole 12a are also provided to accurately hold the falling posture and the position of the falling body 2 similarly to the guide member 11 and the notch 23.

On the other hand, the mounting member 12 has an insertion hole 12b.
Is formed, and an annular string fixing tool 22 is provided on the upper part of the falling body 2, and the string member 3 is inserted through the insertion hole 12b.
(Metal wire, plastic string, etc.)
2 and the other end of the string member 3 is connected to an engagement / disengagement mechanism C described in detail in FIG.

On the bottom portion 13 of the box 1, a tread plate 6 is provided directly below the falling body 2. That is, one end 6a of the tread plate 6 is supported on the bottom 13 of the box, and the other end 6b is attached so as to be able to move up and down. Also this footboard 6
The other end 6b is provided with a tubular protrusion 61 as shown in FIG. 3, and one end of the tread plate 6 is inserted into a slit 61s formed along the longitudinal direction of the axis and fixed to the protrusion 61. . The projecting portion 61 projects outside the box 1 from the slit 14a of the side wall 14. A rat bait 9 is arranged on the upper surface of the tread plate 6, as shown in FIG.

FIG. 4 is a side view showing details of the engagement / disengagement mechanism C. The engagement / disengagement mechanism C includes a rod-shaped member 5 and a support shaft 4 having a circular cross section.
The support shaft 4 is protruded from a side wall of a box (not shown). In addition, the rod-shaped member 5 forms an integral member in which the upper portion 52, the bent portion 53 and the lower portion 54 are continuously connected to each other,
The upper portion 52 and the lower portion 54 extend in the vertical direction, and the bent portion 53 is formed in a shape extending in the horizontal direction. That is, the bent portion 53 is formed in a shape bent in a rectangular shape with respect to the upper portion 52 and the lower portion 54. The string member 3 is provided at the upper end of the upper part 52.
Is formed at the lower end of the lower portion 54, and a pressing portion 55 for pressing the projecting portion 61 of the tread plate 6 from the lateral direction is integrally formed.

The bending angle K of the bent portion 53 with respect to the upper portion 52 is preferably set in the range of 90 to 135 degrees, and more preferably in the range of 100 to 120 degrees. The setting of the bending angle K is selected based on the balance of moments about the axis O of the support shaft 4 as a fulcrum O. That is, the formula of T × L1 = P × L2 is used as the basic formula in the standby state, and the moment force P is the weight applied to the protrusion 61 of the tread plate 6 (when the frictional force acting on the protrusion 61 is not considered, (About half the weight of the tread plate 6) and smaller than a value obtained by adding the weight to the weight of the rat (the symbol T represents the tensile force (the weight of the falling body 2) of the string member 3; L2 indicates each length from the fulcrum O to the point of action).

Therefore, in the pressing portion 55 of the rod-shaped member 5, the projecting portion 61 of the tread plate 6 is held at the upper position by the tensile force T (the weight of the falling body 2) of the string member 3 being applied. The moment force P is set to be smaller than the value obtained by adding the weight of the tread plate 6 (the component force: approximately half of the total weight of the tread plate) and the weight of the rat as described above. Have been.

Therefore, when the mouse rides on the tread plate 6, the tread plate 6 is disengaged from the pressing portion 55 of the rod-shaped member 5 and moves downward. As a result, the moment balance of the rod-shaped member 5 is broken and the pressing portion 55 4, the bent portion 53 rotates around the support shaft 4 and eventually separates from the support shaft 4.

Referring to FIGS. 5 and 6, the operation sequence and the standby state of the mouse trap having the above configuration will be described in detail below together with the configuration of the engagement / disengagement mechanism 5 in FIG. As shown in FIG. 5, the rodent M enters the bottom 13 of the box, is attracted to the bait 9 and moves onto the tread plate 6 as indicated by the arrow, and as shown in FIG. Pressing part 55
The protruding portion 61 is disengaged and descends downward. As a result, the moment balance in the engagement / disengagement mechanism C is broken, and the lower portion of the rod-shaped member 5 rotates about the support shaft 4, whereby the bent portion 53 is changed in posture so as to rise in the vertical direction. Since the bent portion 53 is lifted up from the support shaft 4 so as to slide, the regulation by the engagement / disengagement mechanism C via the string member 3 is completely released by this, and as shown in FIG. Falls naturally along the guide member 11 directly below.

Thus, the rat M on the tread plate 6 is
If the weight of the falling body 2 exceeds 3 Kg when it is sandwiched between the bottom 13 of the box and the bottom plate surface of the falling body 2, the falling weight and / or the continuous weight load causes death.

When the mouse trap is set to the standby state, the falling body 2 is lifted upward from the box 1, and a rectangular piece or the like is inserted into the upper part of the box 1 to drop the falling body 2.
Is temporarily placed on the box 1. Then, the protrusion 61 of the tread plate 6 in the box 1 is lifted through the slit 14a,
A piece of plate is applied to the lifted position and temporarily fixed. Then, the bait 9 is arranged on the tread 6 as necessary. Further, the string member 3 and the rod-shaped member 5 are set at predetermined standby state positions as shown in FIG. 4, the square members for temporary fixing and the plate pieces are removed, respectively, and the mouse catcher shown in FIG.
The setting to the standby state shown in is completed.

The present invention is not limited to the embodiment described above, and as shown in FIG.
The shape of is not limited to a rectangular parallelepiped, may be cylindrical or other polygonal prism, the side wall 14 of the box body 1 is provided with an arbitrary number of mouse entry openings, or a part or all of the side wall 14 It may be formed by a wire net or a transparent plastic plate. Further, the falling body 2 may have a structure in which a weight that can be arbitrarily selected is placed on the upper part of the plate-shaped bottom plate in the method involving the death of the rat, and an opening is formed in the lower part when the larvae method is performed. A hollow box may be used as the falling body 2. In this case, a weight member is added to compensate for the lack of weight, and the side wall and ceiling of the falling body 2 are made of wire mesh or the like in order to facilitate the processing of the captured mouse. It may be formed of perforated metal or the like. Further, the size of the box 1 and the falling body 2 is not particularly limited, and may be arbitrarily designed according to the size of the small animal to be captured. 30 × 30
Those formed to a size of about × 30 cm (length × width × height) are most suitable.

On the other hand, the rod-like member 5 used for the engagement / disengagement mechanism C
4 is not limited to the embodiment shown in FIG. 4, but may be formed by forming a bent portion 53 and a lower portion 54 by omitting an upper portion as shown in FIG. 7 and directly connecting the string member 3 to the bent portion 53. Instead, a semicircular notch 53a may be formed in the upper part of the bent portion 53 in order to reliably position the contact position with the support shaft 4. Further, as a further improvement of the modification shown in FIG. 7, a bent portion 53 and a lower portion 54 may be integrally formed in a planar shape, and a bar-shaped member 5 may be formed in a triangular shape.

Further, the protruding portion 61 provided at one end of the tread plate 6 may have a configuration as shown in FIG. That is, the tread plate 6 is formed of a thin metal plate such as a tin plate,
A cut is made at one end thereof in the lateral direction, and this portion is bent to form a tubular projection 61 integrally with the tread plate 6.

[0036]

As described above, the present invention has the following advantages.

According to the first aspect of the present invention, the weight of a small animal such as a mouse is added to the tread plate, whereby the engaging / disengaging mechanism operates reliably, and the falling body falls onto the small animal by its own weight and removes it. Since the capture is performed, the capture operation is performed promptly and without any trouble, and the small animal can be reliably captured. These series of operations do not require any external power energy (battery, compressed air, etc.), so they are economical and can be installed outdoors or anywhere without electrical equipment. .

According to the second aspect of the present invention, a small animal such as a mouse is sandwiched between the bottom of the falling body and the bottom of the box, and the small animal can be crushed by the falling weight of the falling body and continuous pressing. You do not have to worry about treating small animals as if they were living, and you can easily treat dead bodies as garbage or burying them in the soil.

Further, the small animal can be captured alive inside the hollow fallen object, and the captured small animal can be released when unnecessary killing is not required. Was.

On the other hand, according to the configuration of the fourth aspect, the engagement between the support shaft and the rod-shaped member in the engagement / disengagement mechanism is promptly released by the lowering operation of the tread plate, and the falling body connected thereto via the string member is instantaneously released. Can be dropped. Therefore, no external power energy is required for this disengagement mechanism, and it is economical and can be used repeatedly.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view in FIG.

FIG. 3 is an explanatory view showing a protruding portion of a tread plate according to the present invention.

FIG. 4 is a side view showing an example of an engaging and disengaging mechanism according to the present invention.

FIG. 5 is an operation explanatory view of the mouse trap shown in FIG. 1;

FIG. 6 is an operation explanatory view of the mouse trap shown in FIG. 1;

FIG. 7 is an explanatory side view showing an example of another engagement / disengagement mechanism according to the present invention.

FIG. 8 is an explanatory view showing another example of the protruding portion of the tread plate according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box body 2 Falling object 3 String member 4 Support shaft 5 Bar-shaped member 6 Tread plate 9 Bait 11 Guide member 12 Bridge member 53 Bending part 61 Projection part C Disengagement mechanism H Gap M Rat

Claims (4)

[Claims] 1. A box body having an open upper surface and a guide member provided upright on the box body, and can be dropped into the box body from an upper standby position where a gap is formed between the box body and the guide member. Dropped body, a tread plate laid with one end floating at the bottom of the box, and an erect member provided with one end fastened to the dropped body and the other end provided above the fastening position. A cord member suspended downward, and an engagement / disengagement mechanism provided between an end connected to the suspended cord member and the protrusion of the tread plate. When the body is located at the upper standby position, the moment based on the weight of the falling body acting via the string member supports the projecting portion of the tread plate floated from the bottom of the box body, and moves the falling body to the upper standby position. Hold it and hold one end of the treadle up A small animal trap such as a mouse, wherein the trap is configured as follows. 2. The small animal trap according to claim 1, wherein the falling body is a solid body. 3. The trap for small animals such as mice according to claim 1, wherein the falling body is a hollow box having an open bottom surface. 4. A rod-shaped member connected to a string member suspended downward and having a bent portion at a predetermined position,
When the bent portion of the rod-shaped member is engaged with the side wall of the box and is engaged with the bent portion, the rod has a support shaft on which a fulcrum of a moment acting on the rod-shaped member is formed based on the weight of the falling body. At one end, there is provided a protrusion projecting outward from a slit formed on the side wall of the box body, and the protrusion is in contact with a side surface of the slit by a rod-shaped member urged to one side by the moment. 2. The small animal trap according to claim 1, wherein the trap is sandwiched therebetween so as to hold one end of the tread plate in a floating state. 3.