System for detecting the recoil state of capture wires in snare traps

Abstract

To prevent snare traps from being left at the site for a long time in a state where they are unable to capture harmful animals. [Solution] A spring mechanism (B) passed through the capture wire (12) of the snare trap (T) and a trigger sensor (S) attached to the fixed object (16) of the wire are connected by a tension cord (48) of a certain length that moves when the force of the spring mechanism to contract the diameter of the loop (12a) is released, and when the loop of the wire is released from the loop holder (13) that has rotated downward or up and down together with the footboard (11), the trigger sensor, receiving the tension force (F) of the cord, outputs a signal to detect the loop being repelled.

Description

[Technical Field]

[0001] The present invention relates to a system for detecting the snapping state of a wire in a snare trap for capturing harmful animals. [Background technology]

[0002] Generally, a snare trap used to capture harmful animals such as deer and wild boars consists of a capture wire of the required length with a loop (snare ring) formed at the tip and the base end attached and fixed to a standing tree or the like at the installation site, a loop holder that is pivotally attached to the footboard so that it can rotate up and down and temporarily hold the wire loop in place, a cylindrical frame that houses the loop holder and the footboard so that they can be raised and lowered, and a spring mechanism that elastically urges the wire in the direction that constantly contracts the diameter of the loop (tightening / narrowing).

[0003] Then, as soon as the loop holder, which is in a set state holding the loop of the capture wire, rotates upright as a trigger when a harmful animal steps down on the footboard, the wire loop is ejected from the loop holder and released (detached), and by the resilient and biased caliber contraction force (tightening force / squeezing force), it binds and captures the leg of the harmful animal.

[0004] Harmful animals caught by tying their legs will inevitably thrash around, causing the wire to stretch and contract violently and vibrate up and down and left and right. If this movement is detected by an acceleration sensor, it can be determined that the harmful animal has been caught.

[0005] A monitoring device and method based on this idea are disclosed in Patent Document 1, in which the vibration of the wire on which the loop of the snare trap is formed is measured by an acceleration sensor, and based on the change in the type of vibration, it is determined whether the captured object is a bird, animal, or a human. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6994885 [Patent Document 2] Patent No. 7510129 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the monitoring device disclosed in Patent Document 1 above is based on the assumption that a harmful animal has been captured.If the foot of the snare trap drops, for example, due to a falling rock or an artificial malfunction in the trap, and the wire loop is ejected from the loop holder and released (detached), resulting in a false trigger and no harmful animal being snagged and captured, the wire will not vibrate violently as described above, so the acceleration sensor will not react and no transmission (report) will be made from the monitoring device to the management server.As a result, the snare trap will no longer be able to capture harmful animals and will be left at the site in the mountainous area.However, since the user cannot be aware of this situation from a distance, there will be a long delay in the timing to re-set the snare trap.

[0008] In this regard, the snare trap described in Patent Document 2 proposed by the applicant of the present invention is capable of detecting not only the capture of a harmful animal but also the wire's free-flip state (a malfunctioning, non-capturing state), but to do so requires a second sensor (wire sensor) that functions similarly to the acceleration sensor described in Patent Document 1 and detects the vibration of the wire in response to the violent movements of the captured harmful animal, as well as a first sensor (trigger sensor) that detects the upright rotation of the loop holder as the footboard descends. This is because the second sensor (wire sensor) alone cannot detect the wire's free-flip state.

[0009] In other words, as in the illustrated embodiment described in Patent Document 2, the magnetic body (countersunk head bolt) (30) of the first sensor (trigger sensor) (S1) consisting of a magnetic sensor (Hall sensor) (28) using a Hall IC is attached to the receiving bar (13) of the loop holder (12) in the frame body (10), while the magnet (permanent magnet) (29) is installed corresponding to the mounting piece (12a) protruding from the tip of the loop holder (12) to detect whether the magnetic body (30) is magnetized.

[0010] As a result, even if the above-mentioned problems of the monitoring device disclosed in Patent Document 1 can be improved, the configuration of the trap to achieve this would be complex and specialized, and coupled with factors such as increased power consumption, it would be difficult to widely popularize it as an inexpensive, easy-to-use general-purpose product. [Means for solving the problem]

[0011] The present invention aims to further improve upon these problems, and to achieve this aim, in claim 1, the base end of the capture wire is attached and fixed to a tree, a post, or other fixed object at the trap setting site, while a loop holder that temporarily holds the loop wound around the tip of the capture wire is attached to a footboard so that it can rotate downward or up and down together with the footboard, and

[0012] In the snare trap for capturing harmful animals, a spring mechanism is inserted into the middle of the wiring of the capture wire and presses and urges the loop holder in a tightening direction so that the diameter of the loop contracts.

[0013] A trigger sensor is attached to the fixed object of the capture wire or to a fixed object separate from the fixed object, and the trigger sensor and the spring mechanism are connected together when the force of the spring mechanism to contract the diameter of the loop is relaxed or released. As you do so, naturally Move In addition, the wire is wired separately from the capture wire. of a certain length Does not stretch String, rope, and other Flexible Connected by tension cables Continued hand,

[0014] When the loop of the capture wire is released from the loop holder which has been lowered or rotated up and down together with the footboard, the trigger sensor which receives the pulling force of the tension cord is set to output a detection signal of the loop being released.

[0015] In claim 2, the trigger sensor is a magnetic sensor consisting of a magnetic body and a magnet that detachably attracts the magnetic body, and is installed at an arbitrary height on the tree that is the fixed object of the capture wire, and

[0016] The spring mechanism is formed from a spring housing tube of a certain length in which a compression coil spring is enclosed, a head cap for fastening the loop that covers the spring housing tube from the tip side of the capture wire, and a positioning stopper that similarly receives the spring housing tube from the base end side of the capture wire.

[0017] One end of the tension cord is attached and fixed to the spring housing tube or the positioning stopper in the spring mechanism, or to a first cord threading ring interposed between the two,

[0018] The cable that has been routed from the fixed position toward the tip of the capture wire is fastened to the head cap or a separate loop fastener installed on the tip side of the head cap, or is passed through a second cable passing ring interposed between the two to make a U-turn,

[0019] The cable extending from the U-turned portion toward the base end of the capture wire is passed through a third cable passing ring fixed to the base of the tree or the ground near the base of the tree, which is the object of the capture wire, and is bent upward at a certain angle.

[0020] The other end of the cable extending from the upward bent portion to the upper end of the cable is connected to the magnet of the trigger sensor.

[0021] Furthermore, in claim 3, the trigger sensor is a magnetic sensor consisting of a magnetic body and a magnet that detachably attracts the magnetic body, and is installed at an arbitrary height position on the tree that is the fixed object of the capture wire, and

[0022] The spring mechanism is formed from a torsion spring whose coiled middle section serves as a pivot point, and whose separated ends are biased to expand in opposite forward and backward directions.

[0023] The torsion spring has two release ends shaped as a ring for threading onto the capture wire, and the release rear end located on the base end side of the capture wire is received from the base end side by a positioning stopper, while a loop compressing clamping tool is inserted between the release front end located on the tip end side of the wire and the loop of the wire,

[0024] One end of the tension cable is attached and fixed to the separated rear end of the torsion spring or its positioning stopper, or to a first cable through ring interposed between the two,

[0025] The cable that has been routed from the fixed position toward the tip of the capture wire is made to make a U-turn by passing it through the second cable through-ring engaged with the loop fastener or the front end of the torsion spring that is shaped as the through-ring,

[0026] The cable extending from the U-turned portion toward the base end of the capture wire is passed through a third cable passing ring fixed to the base of the tree or the ground near the base of the tree, which is the object of the capture wire, and is bent upward at a certain angle.

[0027] The other end of the cable extending from the upward bent portion to the upper end of the cable is connected to the magnet of the trigger sensor. [Effects of the Invention]

[0028] According to the above-mentioned configuration of the present invention of claim 1, the spring mechanism and the trigger sensor, which are set through the capture wire of the snare trap, are connected and wired via a tension cord that moves automatically when the diameter contraction force of the loop, which is in a pressing and biased state by the spring mechanism, is released or relaxed, and the trigger sensor, which receives the tension force of the cord, outputs a detection signal for the repelling state of the loop in the capture wire.Therefore, the user can remotely know that the loop is in a repelling state using the user terminal, and can quickly go to the site where the snare trap was set and check whether or not a harmful animal has been captured.If a harmful animal has been captured, they can then take appropriate action, such as exterminating (killing) it.

[0029] Furthermore, the tension cord that constitutes the repelling state detection system of the present invention is wired separately from the capture wire, and moves along the capture wire as the caliber contraction force is released or relaxed, thereby performing the function of detecting the repelling state of the loop.Therefore, it is only necessary to install a single trigger sensor that outputs an electrical signal on the fixed object of the capture wire or on a fixed object separate from it, and as a result of simplifying the necessary configuration, it can be widely used as an inexpensive, easy-to-use general-purpose product.

[0030] In particular, if the result of inspecting whether or not a harmful animal has been captured shows that the snare trap has not been captured and is in a false alarm state, the snare trap can be quickly and timely reset (reset), thereby preventing the snare trap from being left in an incapable state at the site for a long period of time, which has the practical benefit of preventing a decrease in capture efficiency and unnecessary patrols.

[0031] Furthermore, for users of snare traps where blank shots are common (individual farmers and forestry workers, local government animal damage control departments, pest animal support centers, etc.), this will provide an opportunity and information to consider the selection of sites to set up snare traps, the quality of the trapping work, other causes, and improvement measures, and it can also be used to teach regional characteristics and trapping techniques, and to improve capture efficiency. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a block diagram showing the overall outline of a system for detecting the state of repelling of a capture wire in a snare trap of the present invention. [Figure 2] 1 is an explanatory diagram showing the installation state of a snare trap according to a first embodiment of the present invention. FIG. [Figure 3] FIG. 3 is a plan view showing the snare trap extracted from FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. [Figure 5] FIG. 4 is a partially enlarged plan view of FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5. [Figure 7] FIG. 2 is a partially cutaway cross-sectional view showing the spring mechanism of the snare trap and the loop fastener for the capture wire. [Figure 8] 8 is a partially cutaway cross-sectional view of a spring mechanism corresponding to FIG. 7, but showing an alternative metal loop clamp. [Figure 9] 8 is a partially cutaway cross-sectional view corresponding to FIG. 7, showing a state in which a compression coil spring of the spring mechanism is extended (relaxed). FIG. [Figure 10] FIG. 3 is an enlarged schematic cross-sectional view of a trigger sensor extracted from FIG. 2. [Figure 11] FIG. 2 is a block diagram showing a configuration of a trigger sensor. [Figure 12] 3 is an explanatory view corresponding to FIG. 2 showing the state in which the loop of the capture wire has been ejected and released. [Figure 13] FIG. 10 is an operational sequence diagram of the capture wire loop repelling state detection system. [Figure 14] FIG. 10 is a cross-sectional view showing a modified embodiment of the snare trap. [Figure 15]FIG. 10 is a plan view showing a spring mechanism of a snare trap according to a second embodiment of the present invention. [Figure 16] 16 is a plan view corresponding to FIG. 15, showing a state in which the torsion spring of the spring mechanism is expanded (relaxed). FIG. [Figure 17] FIG. 16 is a cross-sectional schematic view showing the snare trap of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0033] The snare trap wire repelling state detection system according to an embodiment of the present invention will be described in detail below with reference to the drawings. As is clear from the block diagram of Figure 1 showing its general configuration, the snare trap wire repelling state detection system comprises a plurality of snare traps (sub-units) (T) installed in areas (Z) where wild boars, deer, and other harmful animals live (appear), and a web server (management server) (W) that receives the snare trap wire repelling state detection information (described below) from each snare trap (T) via a relay base station (parent unit) (R) and distributes it to user terminals (U) via the Internet (N).

[0034] Of the above main components, the snare trap (T) comprises a frame (10) as shown in Figures 2 to 13 showing the first embodiment, a step (11) stored within the frame so that it can be lowered, a capture wire (12) of the required length whose tip is bent into a loop (snare ring) (12a), a loop holder (13) that temporarily holds the loop (12a) of the capture wire (12) in the bent state, and a spring mechanism (B) inserted in the middle of the wiring of the capture wire (12) to apply a spring force in the direction of pre-contracting (tightening / narrowing) the diameter of the loop (12a).When the pest animal steps down (lowers) the step (11), the loop (12a) of the capture wire (12) automatically contracts in diameter, instantly snagging and capturing the leg (A) of the pest animal.

[0035] The frame (10) of the snare trap (T) is made of wood or metal and has a rectangular, circular, oval, or other shape in plan view as shown in Figures 3 to 6, and has a certain depth (d) so that the footboard (11) can descend inside. (14) is a support bar that receives the loop holder (13) of the capture wire (12) in the frame (10).

[0036] However, the frame (10) may be a cylindrical box as long as it can receive and support the loop (12a) forming the tip of the capture wire (12) or its loop holder (13) and has a depth (d) that allows the footboard (11) to descend.

[0037] Similarly, the step (11) of the snare trap (T) is made of a metal plate of a similar rectangular, circular, or oval shape to the frame (10), and in the middle of it, a pair of angled mounting brackets (15) for the loop holder, facing each other at the front and back, are fixed and integrated by welding or screw fasteners (not shown).

[0038] The tip (front end) of the capture wire (12) forms a loop (12a), while the remaining base (rear end) is attached and fixed to the trunk of a tree (standing tree) at the site where the snare trap (T) is to be set, or to an artificially installed stake, post, or other fixed object (16), as shown in Figure 2. The frame (10) of the snare trap (T) with the built-in footplate (11) is buried in a hole (recess) (17) made in the ground (G) at the site, and is kept fixed in place.

[0039] The spring mechanism (B) located midway along the wiring of the capture wire (12) is comprised of a spring housing tube (18) of a certain length, a compression coil spring (19) enclosed within it, and a head cap (20) that covers the spring housing tube (18) from the front end (front), and these are sequentially inserted into the capture wire (12) as shown in Figure 7. All components of the spring mechanism (B) except for the coil spring (19) are made of high-strength synthetic resin. It is preferable that the expandable guide core tube (21) of the coil spring (19) be integrally formed by extending from the head cap (20) toward the base end (rear) of the spring housing tube (18).

[0040] By sliding the spring housing tube (18) of the spring mechanism (B) forward along the capture wire (12) toward the head cap (20), the coil spring (19) can be compressed, and the head cap (20) then acts as a tightening device for the loop (12a), pressing and tightening (narrowing) the loop (12a) of the capture wire (12), thereby reducing the diameter of the loop (12a).

[0041] In this regard, in Figures 3 and 7, the winding starts from the wire-threading ring (22) formed at the cut end of the capture wire (12), and the wire (12) is passed through the ring (22) midway to form the loop (12a) of the capture wire (12). Therefore, the head cap (20) of the spring housing tube (18) in the spring mechanism (B) functions as a clamping tool to clamp (tighten) the loop (12a) of the capture wire (12). Instead of the loop 22 of the capture wire 12 itself, a separate, roughly U-shaped clamp 23 made of a metal plate, as shown in Figure 8, may be inserted between the front and rear of the loop 12a and the head cap 20, and the separated end of the capture wire 12 may be secured to the clamp 23 in a non-detachable state. The wire 12 may also be threaded through the clamp 23 to form the loop 12a of the capture wire 12. In this case, the clamp 23, pressed forward by the head cap 20, directly clamps (squeezes) the loop 12a of the capture wire 12, thereby reducing its diameter.

[0042] (24) is a positioning stopper that prevents the spring housing tube (18) from sliding back, and is made of a butterfly bolt or other metal pressing and fixing device that fastens to the capture wire (12). By adjusting the blocking position, the diameter contraction force of the loop (12a) (the elastic compression force of the coil spring (19)) can be set to an appropriate strength or weakness.

[0043] Furthermore, the loop holders (13) that temporarily hold the loop (12a) of the capture wire (12) are a pair of left and right holders as shown in Figures 3 to 6, and are formed into opposing arc or U-shaped shapes in a plan view, and both ends of each are separated and pivotally attached to the mounting bracket (15) attached to the step (11) by a horizontal fulcrum shaft (25) so that they can rotate up and down freely, and the remaining tip is stably supported from below by the support bar (14) of the frame (10) so as to maintain a horizontal, lying-down position.

[0044] Furthermore, the pair of left and right loop holders (13) are made of metal material with an approximately L-shaped or U-shaped cross section as shown in Figures 4 and 6, and are equipped with a wire-receiving circumferential groove (26) that expands outward (sideways), and the loop (12a) of the capture wire (12) is adapted to be freely engaged and detached by being entirely hung over the wire-receiving circumferential groove (26) of both loop holders (13).

[0045] In other words, the loop (12a) of the capture wire (12) is temporarily fastened in a forced hanging state in the wire receiving recessed peripheral groove (26) of both loop holders (13) against the diameter contraction force caused by the sliding operation of the spring housing tube (18) in the spring mechanism (B), thereby maintaining a pre-expanded constant diameter that can surround the pest's leg (A). As shown in Figure 2, the spring mechanism (B) is installed at approximately the same overall height as the frame (10) incorporating the footplate (11) of the snare trap (T), and is buried shallower in the ground (G) of the site than the frame (10), and its surface is hidden by leaves, grass, soil, sand, and other covering material (27).

[0046] When a harmful animal steps down on the footplate (11) of the snare trap (T) in this set (set) state, this triggers the pair of left and right loop holders (13) that descend together, which then rotate around their fulcrum axis (25) so that they rise up all at once from their tip. As a result, the loops (12a) of the capture wire (12), which have been pre-loaded with a diameter contraction force by the spring mechanism (B), are forcefully ejected from the wire receiving recessed peripheral grooves (26) of both loop holders (13) and released (detached). At the same time, the loops (12a) are quickly tightened (narrowed), and the diameter is contracted.

[0047] The reference numeral (28) in Figures 4 and 6 denotes a pair of adjustment screws attached to the left and right ends of the footboard (11) to receive and support the tip end of the loop holder (13) from below. By moving these screws back and forth in the vertical direction, the angle of rotation of the loop holder (13) can be adjusted to a horizontal, lying position where it is zero.

[0048] (29) is a stopper pin to prevent the danger of the worker setting the snare trap (T) accidentally pushing down the step (11), and is designed to be freely inserted and removed from the left and right directions into the frame (10). Needless to say, the stopper pin (29) is removed after the snare trap (T) is set, and the step (11) is kept in a set state where it can be lowered inside the frame (10).

[0049] When setting up the snare trap (T) in an area (Z) where harmful animals live (appear), the frame (10) of the snare trap (T) is embedded and fixed in a hole (recess) (17) made in the ground (G) which serves as a passageway for the harmful animals, and a stopper pin (29) is inserted, thereby keeping the step (11) to which the loop holder (13) which temporarily holds the loop (12a) of the capture wire (12) is pivotally attached in a safe state so that it will not fall down accidentally.

[0050] Then, a pair of left and right loop holders (13) with the loops (12a) of the wire (12) received and locked in the wire receiving circumferential grooves (26) are inserted and set inside the frame (10), and while keeping the tip of the loop holder (13) placed on the support bar (14) of the frame (10), the stopper pin (29) is removed from the frame (10), preparing the loop holder (13) and the step board (11) so that they can be lowered within the frame (10).

[0051] Then, as shown in Figure 2, the base end of the capture wire (12) is attached to the trunk of a tree at the site or an artificially installed support, stake, or other fixed object (16), and the capture wire (12) extending along the ground (G) and the spring mechanism (B) inserted into it are buried in a fixed state at approximately the same installation height as the frame (10), and the entire structure, including the loop holder (13) of the wire (12), is covered from above with leaves, grass, soil, sand, or other suitable covering material (27) to keep the snare trap (T) in an installed state where it cannot be seen.

[0052] When such a snare trap (T) is set (set), if a harmful animal such as a wild boar or deer steps down on the footplate (11), as indicated by the imaginary line in Figure 6, the pair of left and right loop holders (13) that descend together with the footplate (11) will quickly rotate upright around their fulcrum axis (25), causing the loop (12a) of the capture wire (12) to be forcefully ejected and released (detached) from the wire-receiving peripheral groove (26). At the same time, the diameter of the loop (12a) will naturally contract due to the elastic force of the spring mechanism (B), quickly snagging (tightening) and capturing the leg (A) of the harmful animal.

[0053] In this regard, the state of capturing harmful animals has been explained, but even in the case of a malfunction in which a harmful animal is not captured, for example, if a harmful animal steps down on the footboard (11), but then instantly pulls its leg (A) out of the loop (12a) of the capture wire (12) and escapes, or if the footboard (11) descends under the weight of a large rock, or if the state of engagement of the capture wire (12) with the wire receiving groove (26) of the loop holder (13) is unstable and poorly set, the loop (12a) of the capture wire (12) can be ejected and released (detached) (a state of empty repelling).

[0054] In either case, the moment the loop (12a) of the capture wire (12) is released (detached) from its loop holder (13), the elastic force of the compression coil spring (19) that had been compressing (tightening / narrowing) the diameter of the loop (12a) is released. As a result, the head cap (fastener) (20) or a separate metal fastener (23) that is compressing the loop (12a) moves toward the tip (front) of the capture wire (12). At almost the same time, the compression coil spring (19) naturally expands (relaxes) as shown in Figures 9 and 12, and the spring housing tube (18) moves toward the base end (rear) of the wire (12) relative to the fasteners (20) and (23).

[0055] Just to be clear, when a harmful animal is captured, the spring mechanism (B) which is set and passed through the capture wire (12) is forcibly pulled up from the ground (G) in its buried and covered state due to the harmful animal's violent movements. However, when the harmful animal is not captured and the wire is in an empty state, the spring mechanism (B) remains fixed, buried and covered in the ground (G), and the compression coil spring (19) simply expands (relaxes) and the spring housing tube (18) and the fasteners (20) (23) move, making it possible to distinguish between the captured and non-captured states of the harmful animal.

[0056] The trigger sensor (S) detects whether the loop (12a) of the capture wire (12) has been released. It consists of a Hall IC magnetic sensor (30) or a magnetic proximity switch (contactless switch). A suitable magnetic body (31), such as a countersunk head bolt (see Figure 10), is attached to the control box (32) with its countersunk head facing downward. A magnet (permanent magnet) (33) is attached to one end of a tension cable (described later) that is wired separately from the capture wire (12). The trigger sensor detects whether the magnetic body (bolt) (31) is magnetized. If it is not magnetized (the attraction force is released), the loop holder (13) has released the loop (12a) of the capture wire (12), and outputs a signal indicating that the loop has been released. (34) is a fixing nut for the magnetic body (bolt) (31), and (35) is an attached wire hanging from the magnet (33).

[0057] In this case, the control box (32) is installed at any height on the branch of the tree (standing tree) that is the fixed object (16) of the capture wire (12), as shown in Figure 2. (36) is a sensor board (microcomputer) built into the control box (32) of the trigger sensor (S), and includes a CPU (37), memory (38), etc. The CPU (37) acquires location information detected by a location detection unit (39) that uses GPS. (40) is a battery for power supply.

[0058] The detection output signal of the trigger sensor (S) is wirelessly transmitted (mobile communication) from its transmitter (41) to a relay base station (R) as shown in the block diagram of Figure 11. The relay base station (R) then communicates data with a plurality of snare traps (T) installed in each region (Z), receives detection information from the trigger sensor (S) that the capture wire (12) has been ejected and released (detached), and transmits (reports) this information via the Internet (N) to a web server (management server) (W) such as a data center or a pest capture support center.

[0059] The web server (W) is equipped with a control unit (44) having a CPU (42), memory (43), etc., as shown in the block diagram of Figure 1 and the operation sequence diagram of Figure 13, as well as a receiving unit (45), a display unit (46), and a distribution unit (47). The receiving unit (45) receives the above-mentioned bounce state detection information and position information of the capture wire (12) in the snare trap (T) from the relay base station (R) via the Internet (N), and after judgment by the CPU (42), the information is displayed on the display unit (46). The distribution unit (47) also distributes the information to the user terminal (U) via the Internet (N) by e-mail or the like. However, since the web server (W) is connected to the Internet (N), the above-mentioned information can also be downloaded from the user terminal (U).

[0060] The user terminal (U) can be a personal computer (PC), tablet, mobile device such as a smartphone, or any other device that can communicate with the web server (W) via the Internet (N). The users of the user terminal (U) are expected to be people who set up snare traps (T), local farmers, local government animal damage control departments, and the pest capture support center mentioned above.

[0061] Furthermore, (48) is a string, rope or other flexible tension cord of the required length that connects the spring mechanism (B) threaded through the capture wire (12) to the magnet (permanent magnet) (33) attracted to the magnetic body (bolt) (31) of the trigger sensor (S). When the loop (12a) of the capture wire (12) is released (detached) from its loop holder (13) and the compression coil spring (19) of the spring mechanism (B) is stretched (relaxed), the magnet (33) is removed from the magnetic body (31) of the trigger sensor (S) and its attraction force is released, thereby allowing the trigger sensor (S) to output a detection signal for the repelling state of the capture wire (12).

[0062] 2 and 12, the tension cord 48 is routed separately from the capture wire 12, and one end P1 thereof is attached and fixed, preferably to the rear end of the spring housing tube 18 enclosing the compression coil spring 19, or to the positioning stopper 24 that receives the rear end. However, instead of directly attaching and fixing the tension cord 48 itself to the spring housing tube 18 or the positioning stopper 24, a first cord threading ring 49, such as a carabiner, shackle, key holder, or jump ring, as shown in FIGS. 7 and 8, may be detachably fastened between the front and rear of the spring housing tube 18 and the positioning stopper 24, and the one end P1 of the tension cord 48 may be fastened to the first threading ring 49 in a fixed state.

[0063] (50) is a second cable threading ring that is releasably fastened between the front and rear of the loop (12a) of the capture wire (12) and the head cap (fastener) (20) that presses it, as shown in Figure 7, and is similarly made of a carabiner, shackle, key holder, etc. This second threading ring (50) may also be releasably fastened to the head cap (20) of the spring housing tube (18) or a separate metal fastener (23) as shown in Figure 8, and kept in a fixed state.

[0064] Also, (51) is a third threading ring for a cable made of wire or band, which is wound and fixed around the base of a tree (standing tree), which is the fixed object (16) of the capture wire (12). Alternatively, a third threading ring (51) made of an eyebolt or peg may be screwed and fixed into the base of the tree, or driven into the ground (G) near the base as shown in Figures 2 and 12.

[0065] The tension cord (48) has one end (P1) attached and fixed to the spring housing tube (18), the positioning stopper (24) or the first through ring (49), and then, as shown in Figures 2, 7, 8 and 12, is routed from the fixed position toward the tip (front) of the capture wire (12) where the head cap (20) or a separate fastener (23) is located, and is then passed through the second through ring (50) to make a U-turn, and the capture cord is then passed through the U-turn fold (P2) to the capture wire. The wire (12) is extended to the base end (rear) where the fixed object (16) is located, and is bent upward at a constant angle (θ) of approximately 90 degrees by passing it through the third threading ring (51). The other end (P4) which becomes the upper end of the cable (48) from the upward bent portion (P3) is connected via a cable tie (insulating lock) (52) or the like to an attached wire (35) hanging down from a magnet (33) which is attracted to the magnetic body (bolt) (31) of the trigger sensor (S).

[0066] In this case, it is preferable that the cable 48 makes a U-turn backward at the second through ring 50, and then passes its one end P1 through the first through ring 49 to which it is attached and fixed, as shown in Figures 2, 7, 8, and 12, and then passes it through the third through ring 51. This is because the cable 48 can be laid along the ground G without unnecessary bending or loosening by being approximately parallel to the capture wire 12, and the capture wire 12 and the tension cable 48 can be easily hidden by coverings 27 such as leaves, earth, and sand.

[0067] In addition, by passing the cable (48) partway through the third cable passing ring (51), it is changed in direction upward as shown in Figures 2 and 12 and connected to the magnet (33) by wiring, in order to prevent the tension cable (48) from loosening so as to float above the ground (G), and to maintain the tensioned state so that the magnet (33) can be reliably and stably removed from the state of attraction with the magnetic body (31) in the trigger sensor (S).

[0068] In the illustrated embodiment, the first and second through rings (49) (50) for wiring the tension cable are described as being separate and independent from the spring mechanism (B), but the cable (48) may also be similarly routed through a through hole (not shown) formed in part of the spring housing tube (18) or its head cap (20).

[0069] Since the tensioning cable (48) is wired as described above, when the loop (12a) of the capture wire (12) is released (detached) from the loop holder (13), the compression coil spring (19) of the spring mechanism (B) instantly expands (relaxes), and the spring housing tube (18) moves toward the base end (rear) of the capture wire (12) relative to the head cap (clamp) (20) or the separate clamping device (23). The magnet (33) receives a pulling force (see Figures 9 and 12) in the direction of the arrow (F) by the tensioning cable (48), and is detached from the magnetic body (bolt) (31) of the trigger sensor (S). The suction force of (31) is released, and the trigger sensor (S) outputs an electrical signal that detects the repelling state of the loop (12a), and this detection output signal is sent (reported) from the trigger sensor (S) to the user terminal (U) via the relay base station (R) and web server (W). As a result, the user can quickly go to the site where the snare trap (T) was set and reset the snare trap (T) that was released when the loop (12a) was repelled, so that it is ready to capture pest animals, and there is no risk that the snare trap (T) will be left in a state where it cannot capture pest animals for a long period of time. In this sense, the efficiency and convenience of capturing pest animals are significantly improved.

[0070] In the snare trap (T) of the first embodiment shown in Figures 2 to 13, the loop holder (13) rotates upward in an upright manner as the footboard (11) descends, thereby ejecting and releasing the loop (12a) of the capture wire (12). However, as long as the loop (12a) can be ejected and released, the present invention can also be applied to a snare trap (T) configured in such a way that the loop holder (13) rotates downward in an inverse manner around the attachment fulcrum axis (25) to the frame (10) as the footboard (11) descends, as shown in the partially modified embodiment of Figure 14.

[0071] Next, Figures 15 to 17 show a capture wire repelling state detection system for a snare trap (T) according to a second embodiment of the present invention, and the differences in configuration from the first embodiment shown in Figures 2 to 13 are summarized as follows.

[0072] In the snare trap (T) of the first embodiment, the spring mechanism (B) inserted into the capture wire (12) consists of a spring housing tube (18), its head cap (fastener) (20), and a compression coil spring (19) inserted between the front and rear of the tube (18), whereas in the snare trap (T) of the second embodiment, the spring mechanism (B) consists only of a torsion spring (53) that is exposed (bare), so to speak, and a pair of front and rear wire-passing rings (53a) and (53b) that form the separated ends of the torsion spring (53) are inserted into the capture wire (12) and set.

[0073] Although the specific configuration of the spring mechanism (B) differs between the first and second embodiments, the detached end portions (53a) and (53b) of the torsion spring (53) in the second embodiment rotate around the coil-wound middle portion (53c) as shown in Figures 15 and 16, and expand from a narrow mutually spaced state to a wide position in opposite forward and backward directions along the capture wire (12). This can be said to be functionally the same as the compression coil spring (19) in the first embodiment, which extends from its short compressed state to an opposite forward and backward direction along the capture wire (12).

[0074] In other words, the detached end portion (53a) located at the tip (front) side of the capture wire (12) of the torsion spring (53) corresponds to the head cap (20) located at the tip (front) side of the spring housing tube (18) that houses the compression coil spring (19), and the detached other end portion (53b) located at the base (rear) side of the capture wire (12) of the torsion spring (53) corresponds to the rear end portion of the spring housing tube (18) of the compression coil spring (19).

[0075] Moreover, the detached one end (front end) portion (53a) of the torsion spring (53) and the head cap (20) of the spring housing tube (18) enclosing the compression coil spring (19) are both biased to press against the loop (12a) of the capture wire (12) and tighten (narrow) the diameter of the loop (12a) to reduce it. In addition, the positioning stopper (54) that receives the detached other end (rear end) portion (53b) of the torsion spring (53) corresponds to the positioning stopper (24) of the spring housing tube (18) that accommodates the compression coil spring (19), and they perform the same function.

[0076] In addition, a stopper fitting (55) that prevents the separated ends (53a) and (53b) from spreading apart is engaged in a bridging state as shown in Figure 15 in the middle of the torsion spring (53), which rotates around the middle part (53c) and opens and closes its ends (53a) and (53b). This stopper fitting (55) is detached from the torsion spring (53) as soon as the snare trap (T) is ready to be set, and the separated ends (53a) and (53b) are pressed and urged to spread apart in opposite forward and backward directions, thereby constricting the diameter of the loop (12a) of the capture wire (12).

[0077] Since the spring mechanism (B) of the snare trap (T) of the second embodiment corresponds functionally to that of the first embodiment as described above, the pulling cord (48) of the required length that connects to the magnet (permanent magnet) (33) attracted to the magnetic body (bolt) (31) of the trigger sensor (S) is wired as follows, so that the repelling state of the loop (12a) in the capture wire (12) can also be detected.

[0078] That is, as shown in Figure 15, one end (P1) of the cable (48) is attached and fixed to the above-mentioned detached other end (rear end) portion (53b) of the torsion spring (53), its positioning stopper (54), or a first cable passing ring (49) that is engaged in a freely detachable manner between the front and rear ends thereof, and is then wired from this fixed position toward the tip (front) side of the capture wire (12) where the metal fastener (23) is located, and then made a U-turn toward the rear by passing it through a second cable passing ring (50) that is engaged in a freely detachable manner with the fastener (23).

[0079] In this case, since the detached end (front end) of the torsion spring (53) is shaped as a wire-passing ring (53a), instead of passing the cable (48) partway through the second passing ring (50) and making a U-turn (folded back), the wire-passing ring (53a) can be used as a folded back portion (P2), and the cable (48) can be passed through it as shown in Figure 15 to make a U-turn.

[0080] In either case, the cable (48) that has made a U-turn toward the rear continues to be extended toward the base (rear) side where the fixed object (16) of the capture wire (12) is located, as in the first embodiment described above, and the upper end (P4) of the cable (48) that has been changed in direction at the upward bent portion (P3) is connected via a cable tie (insulating lock) (52) to an attached wire (35) that hangs down from a magnet (33) that is attracted to the magnetic body (bolt) (31) of the trigger sensor (S) through a third through ring (51) that is fixedly installed at the base of the tree (standing timber) that is the fixed object (16) or the ground (G) nearby.

[0081] Therefore, even in the second embodiment of the snare trap (T), when the loop (12a) of the capture wire (12) is released (detached) from the loop holder (13), both detached ends (53a) and (53b) of the torsion spring (53) constituting the spring mechanism (B) are spread (relaxed) widely in the front-rear direction, and the other detached end (rear end) (53b) of the torsion spring (53) is moved relative to the fastening device (23) of the loop (12a) to release the wire (12). ), when the magnet (33) moves toward the base end (rear) of the trigger sensor (S), the magnet (33) receives a tensile force (see FIGS. 12 and 16) in the direction of the arrow (F) from the cable (48), and is detached from the magnetic body (31) of the trigger sensor (S). The magnetic body (31) is released from its adhesive force, and a detection signal for the repelling state of the loop (12a) is output from the trigger sensor (S), thereby achieving the same effect as in the first embodiment.

[0082] Furthermore, the frame (10) of the snare trap (T) of the second embodiment is cylindrical with a constant depth (d) as shown in Figure 17, and the loop holder (13) of the capture wire (12) is cylindrical and fitted inside the frame (10) so that it can move up and down freely, and its bottom surface is integrally formed with a U-shaped cross section as a footplate (11), so that the loop (12a) of the capture wire (12) supported on the upper edge of the opening of the loop holder (13) is automatically ejected from the loop holder (13) and released (detached) as soon as it descends together with the footplate (11).

[0083] The other configurations and functions of the snare trap (T) of the second embodiment are substantially the same as those of the first embodiment shown in Figures 2 to 13, so the same symbols as those in Figures 2 to 13 are simply used in Figures 15 to 17, and detailed explanations thereof will be omitted.

[0084] In the illustrated first and second embodiments, the trigger sensor (S) is described as being composed of a low-power magnetic sensor (Hall sensor) (30). However, as long as it is possible to detect the repelling state of the loop (12a) in response to the tensile force (F) of the tension cord (48), it is not limited to the magnetic sensor (30). It is also possible to use other means capable of detecting the presence, position, and removal of an object, such as a capacitance or induction type proximity sensor, an optical sensor such as a photointerrupter, an electric or mechanical switch (contact switch) such as a reed switch or a microswitch, or any other means.

[0085] In the illustrated first and second embodiments, the trigger sensor (S) is suspended from a branch (at any height) of a tree (standing tree), which is the fixed object (16) of the capture wire (12), and the other end (upper end) (P4) of the tensioning cord (48) pointing upward from the middle is connected by wiring to the magnet (33) that is attracted to the magnetic body (31). However, the trigger sensor (S) may also be attached to a tree, stake, or other fixed object (not shown) separate from the fixed object (16) of the capture wire (12). Furthermore, if the separate fixed object is, for example, a tree stump, and the magnet (33) of the trigger sensor (S) attached to this is connected to the other end (P4) of the tensioning cord (48) wired along the ground (G), the upward bent portion (P3) of the tensioning cord (48) may be omitted. [Explanation of symbols]

[0086] (10) Frame (11) Snare trap (12) Capture wire (12a) Loop (13) Loop holder (16)...Fixed object (17) Hole (recess) (18) Spring housing tube (19) Compression coil spring (20) Head cap (fastener) (22) Wire guide ring (23) Fastener (24)(54) Positioning stopper (25) Fulcrum axis (26) Wire receiving groove (30) Magnetic sensor (31) Magnetic material (bolt) (33) Magnet (permanent magnet) (48) Tension cable (49) First threading ring (50) Second threading ring (51) Third threading ring (52) Cable ties (53) Torsion spring (53a) Separated end (53b) Separated other end (53c)...Middle part (rotation fulcrum) (A) Legs of harmful animals (B) Spring mechanism (S) Trigger sensor (T)... Entanglement trap (P1) One end of the tension cable (P2) Folded part of tension cable (P3) Upward bend of tension cable (P4)...The other end of the tension cable

Claims

1. The base end of the capture wire (12) is attached and fixed to a tree, a post, or other fixed object (16) at the trap setting site, while a loop holder (13) that temporarily holds the loop (12a) wound around the tip of the capture wire (12) is attached to a footboard (11) so that it can rotate downward or up and down together with the footboard (11), In the snare trap (T) for capturing harmful animals, a spring mechanism (B) is inserted into the middle of the wiring of the capture wire (12) to press and urge the loop holder (13) in a tightening direction in which the diameter of the loop (12a) contracts. A trigger sensor (S) is attached to the fixed object (16) of the capture wire (12) or to a fixed object separate from the fixed object, and the trigger sensor (S) and the spring mechanism (B) are connected by a fixed length of inelastic string, rope, or other flexible tension cord (48) wired separately from the capture wire (12) so that the trigger sensor (S) moves automatically as the diameter contraction force of the loop (12a) by the spring mechanism (B) relaxes or is released, This system for detecting the repelling state of a capture wire in a snare trap is characterized in that when the loop (12a) of the capture wire (12) is released from the loop holder (13) that has been lowered or rotated up and down together with the footboard (11), a trigger sensor (S) that receives the tensile force (F) of the tension cord (48) outputs a detection signal for detecting the repelling state of the loop (12a).

2. The trigger sensor (S) is a magnetic sensor (30) consisting of a magnetic body (31) and a magnet (33) that detachably attracts the magnetic body (31), and is installed at an arbitrary height position on the tree that is the fixed object (16) of the capture wire (12), The spring mechanism (B) is formed from a spring housing tube (18) of a certain length in which a compression coil spring (19) is enclosed, a loop tightening head cap (20) that covers the spring housing tube (18) from the tip side of the capture wire (12), and a positioning stopper (24) that similarly receives the spring housing tube (18) from the base end side of the capture wire (12), One end (P1) of the tension cable (48) is attached and fixed to the spring housing tube (18) or the positioning stopper (24) in the spring mechanism (B), or to a first cable through ring (49) interposed between the two (18) and (24), and then The cable (48) is once routed from the fixed position toward the tip of the capture wire (12), and the cable (48) is fastened to the head cap (20) or a separate loop fastener (23) installed on the tip of the head cap (20), or is passed through a second cable threading ring (50) interposed between the head cap (20) and the cable (23) to make a U-turn. The cable (48) extending from the U-turn shaped folded portion (P2) toward the base end of the capture wire (12) is passed through a third cable passing ring (51) fixedly installed at the base of the tree, which is the fixed object (16) of the capture wire (12), or on the ground (G) near the base, thereby bending the cable (48) upward by a certain angle (θ), A system for detecting the repelling state of a capture wire in a snare trap as described in claim 1, characterized in that the other end (P4) which becomes the upper end of the rope (48) from the upward bent portion (P3) is connected to the magnet (33) of the trigger sensor (S).

3. The trigger sensor (S) is a magnetic sensor (30) consisting of a magnetic body (31) and a magnet (33) that detachably attracts the magnetic body (31), and is installed at an arbitrary height position on the tree that is the fixed object (16) of the capture wire (12), The spring mechanism (B) is formed from a torsion spring (53) whose coil-wound middle portion (53C) serves as a pivot point, and whose two separated ends (53a) and (53b) are pressed and biased to expand in opposite forward and backward directions, Of the two detachable ends of the torsion spring (53), which are shaped as thread rings (53a) and (53b) for passing through the capture wire (12), the detachable rear end (53b) located on the base end side of the capture wire (12) is received from the base end side by a positioning stopper (54), while a loop compressing tightening device (23) is inserted between the detachable front end (53a) located on the tip end side of the wire (12) and the loop (12a) of the wire (12); One end (P1) of the tension cable (48) is attached and fixed to the separated rear end (53b) of the torsion spring (53) or its positioning stopper (54), or to a first cable through ring (49) interposed between the two (53b) and (54), and then The cable (48) that has been routed from the fixed position toward the tip of the capture wire (12) is made to make a U-turn by passing it midway through the second cable through-ring (50) engaged with the loop fastener (23) or the detached front end (53a) of the torsion spring (53) itself, which is shaped as the through-ring; The cable (48) extending from the U-turn shaped folded portion (P2) toward the base end of the capture wire (12) is passed through a third cable passing ring (51) fixedly installed at the base of the tree, which is the fixed object (16) of the capture wire (12), or on the ground (G) near the base, thereby bending the cable (48) upward by a certain angle (θ), A system for detecting the repelling state of a capture wire in a snare trap as described in claim 1, characterized in that the other end (P4) which becomes the upper end of the rope (48) from the upward bent portion (P3) is connected to the magnet (33) of the trigger sensor (S).

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