JP2012005400A - Mole trapping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mole trapping device that is easily used at home and provides an effect of trapping for long period of time.SOLUTION: The mole trapping device 10 includes: a pole 12 including a hollow part; an operation bar 14 in which the hollow part is moved up and down; a killing needle 16 connected to a bottom of the operation bar 14; an operation spring 18 energizing the operation bar 14 downward; a link member 22 that is moved around a fulcrum 52; a fastening pin 24 of which one end is pivoted to the one end of the link member 22; a dimple 48 provided at the operation bar 14 that is engaged with a projection 46 provided at the other end of the fastening pin 24; a mole detection plate 26 provided on a ground surface; and a transmission bar 28 provided with a taper face 42 of which the bottom is connected to the mole detection plate 26 and is engaged with a curved surface 54 of a tip of the link member 22 at an upper end.

Description

The present invention relates to an apparatus for killing and capturing moles in the ground.

Mole live in cavities (tunnels) excavated in the ground. You can see many tunnels made of moles even on agricultural land. Mole only moves around in search of earthworms as food in the tunnel, and it is rare to cause direct damage to crops, but the tunnel excavated vertically and horizontally on the farmland disrupted soil continuity This has led to a decrease in water holding capacity and permeability, which has caused enormous damages such as deterioration of crop growth and death. Other animals, such as mice, have also entered the tunnels and eaten and damaged the crops.
Various attempts have been made so far to deal with such mole damage. For example, a device that repels moles with sounds, vibrations, drugs, etc. (see Patent Documents 1 and 2), a device that captures moles in a tunnel (see Patent Documents 3 and 4), and detects the proximity of moles Thus, a device for killing with a needle or a cone (see Patent Documents 5, 6, and 7) has been devised and implemented.

Utility Model Registration No. 3104397 JP 2004-159628 A Japanese Patent Laid-Open No. 2004-135543 Utility Model Registration No. 3090493 JP 2003-325092 A Japanese Patent Laid-Open No. 2002-112789 Utility Model Registration No. 3121310

Among them, the device that repels moles with sound or vibration has a certain effect at the beginning of installation, but the effect decreases with time because the moles get used to it. Also, just repelling does not reduce the number of moles, so it does not completely solve the problem. In this respect, the number of moles can be reduced by using a device that traps traps in the tunnel, but it takes time to install, and there still remains a problem of reduced effects due to familiarity and learning of moles.
Since the device that kills moles has a structure that penetrates a needle or the like from the ground into the tunnel, there is no concern about moles being detected, and it has the advantage that the effect will last and the number of heads can be reduced reliably. Yes. However, considering the fact that there are many complicated structures such as using an electric driving force for the operation of the needle and using multiple springs, considering that it is installed in bad outdoors, etc., in order to maintain normal functions Requires labor and expense to manage.
The mole capturing device of Patent Document 7 is a device that the inventor of the present invention devised earlier, but has a very simple structure that uses only one spring as a driving force, and is easy to handle and easy to maintain. It was an excellent device. This time, the inventor made further improvements to this device to improve convenience.

The present invention includes a support column having a hollow portion, an operating rod capable of moving the hollow portion up and down, a killing needle connected to a lower end of the operating rod, means for biasing the operating rod downward, A fixing means for fixing the killing needle that is displaced to a standby position and a killing position as the operating rod moves up and down is fixed to the standby position, the fixing means having a link member that can rotate around a fulcrum, and one end thereof An engaging member pivotally supported on one end of the link member, an engaged portion provided on the actuating rod for engaging with an engaging portion provided on the other end of the engaging member, and a ground surface Provided is a mole capturing device comprising: a mole detecting member to be installed; and a transmission rod having a lower end connected to the lower end of the mole detecting member and a tapered surface that engages with the tip end surface of the other end of the link member. To do.

The operation of this mole capture device is as follows. When the killing needle is in the standby position, the tapered surface of the transmission rod and the distal end surface of the link member are in surface contact, and gravity acting on the mole detection member and the transmission rod is in contact with the tapered surface and the distal end surface. Is transmitted to the link member via the contact surface. The link member rotates in a predetermined direction, the engaging member is displaced in a predetermined direction, and the engaging portion engages with the engaged portion. As a result, the operating rod is fixed at a predetermined height, and the killing needle is fixed at the standby position. The mole detection member installed on the ground surface is displaced upward together with the ground surface lifted when the mole passes below. Thereby, the position of the taper surface of the transmission rod and the tip surface of the link member is shifted up and down to release the surface contact, and the link member is released from the force for rotating in the predetermined direction. Along with this, the engagement portion of the engagement member and the engaged portion are disengaged, the fixing of the operating rod is released, the kill needle is displaced to the kill position, and penetrates the ground surface. Kill the mole in the ground.

Since the mole capturing device of the present invention is easy to handle and easy to maintain, it can be easily used at home. Moreover, since it is installed on the ground separated from the mole in the ground, the capture effect is not reduced by the familiarity and learning of the mole, and the capture effect lasts for a long time.

Overall view of mole capture device Side view of mole capture device showing kill needle in standby position Side view of mole capture device showing the kill needle in the kill position

Embodiments of the present invention will be described with reference to the drawings. First, the structure of the mole capturing device 10 will be described based on the overall structural view shown in FIG. The mole capturing device 10 is mainly composed of an operating rod 14, a killing needle 16, an operating spring 18, a fixed pile 20, a link member 22, a fixing pin 24, a mole detecting plate 26, and a transmission rod 28 with the support 12 as a structural center. It is configured as a member. These members mainly use iron and have a rust-proof coating on the surface. The killing needle 16 uses a piano wire instead of iron, and the tip is sharpened with a file or the like.

The support column 12 is a substantially cylindrical member that is long in the vertical direction, and an operating spring 18 is mounted in the hollow portion. The operating rod 14 is a vertically long rod-like member, and a portion other than the upper end to which the ring 30 is attached can move up and down the hollow portion of the column 12. The actuating bar 14 is always biased downward by the actuating spring 18, and when it is moved upward, it is pulled up by hooking a finger on the ring 30. A kill needle 16 is attached to the operating rod 14 via a bridge 32. The bridge 32 is a horizontally long member attached to the lower end of the operating rod 14, and both ends of the bridge 32 extend to the outside of the column 12 through two slits 34 formed in the column 12 in the vertical direction. Two killing needles 16 are mounted downward at both ends of the bridge 32.

The mole detection plate 26 is mounted inside the protective frame 36 attached to the lower end of the support column 12 so as to be vertically movable. The top surface of the mole detection plate 26 is shielded by the protective frame 36, but the bottom surface is not shielded and is completely open. The transmission rod 28 is a vertically long rod-like member, the lower end is connected to the upper surface of the mole detection plate 26, and extends to the vicinity of the upper end of the column 12 through the hole 38 and the guide hole 40 formed in the upper surface of the protective frame 36. ing. The upper end of the transmission rod 28 is bent to the side opposite to the column 12, and a tapered surface 42 that is inclined toward the column 12 as it goes downward is formed at the tip of the bent portion.

The fixing pin 24 is attached to the inside of a protective frame 44 attached to the upper end of the support column 12 so as to be laterally movable. A hemispherical protrusion 46 is formed at the tip of the fixing pin 24. A hemispherical recess 48 that engages with the projection 46 is formed in the operating rod 14. The rear end of the fixing pin 24 is pivotally supported around one end of the link member 22 and a fulcrum 50. The link member 22 is an L-shaped member, and is pivotally supported by the protective frame 44 so as to be rotatable around a fulcrum 52. The other end of the link member 22 faces the column 12 side, and a curved surface 54 is formed at the tip.

The fixed pile 20 is a vertically long rod-like member, and is used when the mole 20 is fixed in an upright state by being inserted into the ground. A handle 56 serving as a grip is attached to the upper end of the fixed pile 20, and the lower end has a sharp shape so that it can be easily inserted into the ground. The fixed pile 20 is inserted into a hole 60 provided through the pile fixing member 58 connected to the support column 12 in the vertical direction, and the fixed pile 20 is moved up and down while the fixed knob 62 is loosened. Adjust the amount, close the fixing knob 62 to fix the position, and then insert it into the ground.

Next, the function of the mole capturing device 10 will be described with reference to FIGS. FIG. 2 shows a state where the killing needle 16 is in the standby position, and FIG. 3 shows a state where it is in the killing position.

As shown in FIG. 2, in the state where the killing needle 16 is in the standby position, the protrusion 46 of the fixing pin 24 is engaged with the recess 48 of the operating rod 14, and the operating spring 18 is maintained in a compressed state. ing. In order to fix the killing needle 16 to the standby position, a complicated operation is not necessary, and it is only necessary to pull up the operating rod 14 with the support column 12 standing substantially vertically. When the support column 12 is erected substantially vertically, the tapered surface 42 at the upper end of the transmission rod 28 moves downward and contacts the curved surface 54 at the tip of the link member 22 from above. A horizontal component F1 of gravity G acting on the mole detection plate 26 and the transmission rod 28 is transmitted to the link member 22 via the contact surface of the tapered surface 42 and the curved surface 54, and a moment M1 around the fulcrum 52 acts. As a result, a force F <b> 2 directed toward the operating rod 14 acts on the fixing pin 24 pivotally supported on one end of the link member 22, and the tip protrusion 46 is pressed against the operating rod 14. When the operating rod 14 is pulled up to a position where the height of the recess 48 and the height of the projection 46 are the same, the projection 46 is fitted into the recess 48 by the force F2, the operating rod 14 is fixed, and the killing needle 16 is in the standby position. Fixed.

The mole capturing device 10 is installed so that the mole detection plate 26 is positioned right above the mole hole 70. At this time, the fixed pile 20 is inserted in a place away from the mole hole 70, and care is taken so that the fixed pile 20 is not exposed to the mole hole 70.

If the ground surface rises when the mole passes through the mole hole 70, the mole detection plate 26 moves upward as shown in FIG. Accordingly, when the transmission rod 28 moves upward, the taper surface 42 at the tip and the curved surface 54 of the link member 22 are disengaged. As a result, the force F1 does not act, so the link member 22 is released from the moment M1 that has been acting so far, and the fixing pin 24 is also released from the force F2. As a result, the projection 46 comes out of the recess 48 and the fixing of the operating rod 14 is released. The operating spring 18 is released from the compressed state so far, and the operating rod 14 is instantaneously lowered. Along with this, the killing needle 16 penetrates the ground surface and pierces the mole in the mole hole 70.

If the killing needle 16 is disposed on both sides of the mole detection plate 26 along the direction of movement of the mole hole 70, the mole can be captured regardless of which direction it is moving. In addition, if a plurality of killing needles 16 are arranged at an appropriate interval, a fast-moving mole can be captured.

DESCRIPTION OF SYMBOLS 10 Mole capture device 12 Support | pillar 14 Actuation rod 16 Killing needle 18 Actuation spring 20 Fixed pile 22 Link member 24 Fixing pin 26 Mole detection plate 28 Transmission rod 42 Tapered surface 46 Protrusion 48 Depression 54 Curved surface

Claims (1)

A support column having a hollow portion, an operating rod capable of moving up and down the hollow portion, a killing needle connected to a lower end of the operating rod, a means for biasing the operating rod downward, and an upper and lower portion of the operating rod A fixing means for fixing the killing needle that is displaced to a standby position and a killing position with movement to the standby position,
The fixing means includes a link member rotatable around a fulcrum, an engagement member having one end pivotally supported by one end of the link member, and an engagement portion provided at the other end of the engagement member. The engaged portion provided on the operating rod, the mole detecting member installed on the ground surface, the mole detecting member and the lower end are connected, and the upper end is engaged with the tip end surface of the other end of the link member. A mole capturing device including a transmission rod provided with a tapered surface to be joined.

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