Leg-binding trap

Abstract

To provide a leg-binding trap improving a capturing rate of an animal by enabling expansion of a capturing range by a wire rope in a mechanism of a trap and allowing a tip tool of a spring-loaded arm to instantaneously jumpingly move toward a leg of the animal when activated and binding the animal.SOLUTION: A leg-binding trap W1 includes a torsion coil spring 3a, a base arm 1 fixed to one tip of each of spring rods 31 and 32 of the torsion coil spring 3a, a spring-loaded arm 2 fixed to the other tip of each of the spring rods 31 and 32 of the torsion coil spring 3a, a trigger tool 4 capable of setting the base arm 1 and the spring-loaded arm 2 into an armed state and capable of releasing the armed state to activate the trap, and a wire rope 5 that binds and captures a leg L of an animal by spreading the base arm 1 and the spring-loaded arm 2 in the activation of the trap.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a leg-binding trap, specifically to a trap that can enlarge the capture range of the wire rope and improves the capture rate of animals by enabling the tip of the lifting arm to instantly jump towards the animal's leg when activated and bind it. [Background technology]

[0002] In recent years, damage to agricultural crops caused by wild animals such as wild boars has been increasing and becoming more serious. There are various types of hunting traps that have been used for a long time, and leg-binding traps, which capture animals by tying their legs with wire rope, are one such type of trap. Most leg-binding traps use various metal springs as their actuating force.

[0003] Among these, a leg-binding trap that uses a torsion coil spring to spread two arms and tighten a wire rope is the animal trap proposed by the present inventor in Patent Document 1. This conventional animal trap has two arms that cross at the rear and are rotatably attached to a shaft, and torsion coil springs are arranged on the shaft-attached sides of both arms, and the biasing force of these springs is used as the operating force (driving force) when spreading the arms. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-125743 Summary of the Invention [Problem to be solved by the invention]

[0005] The animal trap described in Patent Document 1 was useful because the torsion coil spring had a strong force that bound the animal's legs, resulting in a high capture rate. However, the trap was relatively heavy due to the structure in which both arms were operated by torsion coil springs separate from the arms. Furthermore, the hook at the tip of the spring bar on the lifting arm side of the torsion coil spring contacts the back surface of the lifting arm with strong pressure when the trap is set (see Figure 1 of Patent Document 1).

[0006] As a result, when the tip of the hook slides over the surface of the lift-up arm during operation, a strong frictional force is generated, causing a momentary delay in the timing at which the lift-up arm jumps up. At the same time, the force and speed at which the tip of the lift-up arm moves toward the leg to tie up the animal's leg with the wire rope are weakened, sometimes resulting in a failed capture.

[0007] Furthermore, the opening angle between the two arms at the intersection was structurally limited to approximately 100° (see Figure 8 of Patent Document 1), which meant that the tip of the lifting arm that pulls the wire rope during operation could not have a sufficient stroke. Therefore, when setting the trap, it was difficult to enlarge the ring-shaped capture part formed at the end of the wire rope to expand the capture range.

[0008] The present invention has been devised in view of the above points, and aims to provide a leg-binding trap which improves the capture rate of animals by enabling the capture range of the wire rope to be expanded when setting up the trap, and by enabling the tip of the jumping arm to move so as to instantly jump towards the animal's leg when activated and bind it. [Means for solving the problem]

[0009] [1] In order to achieve the above object, the present invention provides a leg-binding trap comprising a torsion coil spring, a base arm fixed directly or indirectly to one end of each spring bar of the torsion coil spring, a jumping arm fixed directly or indirectly to the other end of each spring bar of the torsion coil spring, a trigger means that engages the base arm and the jumping arm to set them in an armed state and can release the armed state to activate the trap, and a wire rope that binds and captures an animal's leg by expanding the base arm and the jumping arm when the armed state is released.

[0010] The leg binding trap of the present invention comprises a torsion coil spring, a base arm fixed directly or indirectly to one end of each spring bar of the torsion coil spring, and a jumping arm fixed directly or indirectly to the other end of each spring bar of the torsion coil spring.As a result, there is no part where the two arms cross and are attached to an axis, as in the conventional structure, and therefore the leg binding trap can be made lighter accordingly.

[0011] Furthermore, the trap is provided with a trigger means that can set the base arm and the lift-up arm to a rigged state and release the rigged state to activate the trap, and a wire rope that catches an animal by binding its legs when the base arm and the lift-up arm are expanded during trap activation; after the trap is rigged, the animal to be captured can be caught with the wire rope by operating the trigger means with the animal's legs.

[0012] In addition, both arms are fixed directly or indirectly to the tip of each spring bar of the torsion coil spring, so that when the arms open during trap operation, no strong friction is generated between the engaging part of the torsion coil spring and the arms, as in conventional traps. As a result, when the trap is activated, the rear side of the leg-binding trap (the torsion coil spring side) jumps up instantaneously due to the tension of the wire rope, coupled with the fact that it is lighter, and the tip of the jumping arm moves as if it is jumping towards the animal's leg, thereby binding the leg and improving the animal capture rate.

[0013] Furthermore, the stroke of the tip of the lifting arm when the arms are spread apart is structurally dependent on the opening angle of the torsion coil spring, so it is sufficiently wide that even if the size of the trap including the length of the arms is the same, the amount of pull on the wire rope is greater than in conventional traps. Therefore, when setting up the trap, the loop of the catching part at the end of the wire rope can be made larger, further expanding the capture range and improving the capture rate of animals.

[0014] [2] The leg binding trap of the present invention may be configured so that the lengths of the base arm and the lifting arm from the center of expansion of the torsion coil spring are adjustable.

[0015] In this case, by increasing the length of the base arm and the lifting arm from the center of the torsion coil spring, the amount of pulling of the wire rope when the leg-binding trap is activated can be increased. Therefore, the loop-shaped catching part of the wire rope can be enlarged when setting the trap, and the catching range can be expanded, thereby improving the animal capture rate.

[0016] In addition, by adjusting the size of the leg trap, it can be used to capture animals of various sizes, from small animals such as foxes to large animals such as bears.

[0017] [3] The leg trap of the present invention can also be configured such that the lifting arm is bent toward the base so that the tip is approximately parallel to the base arm when it engages with the base arm via the trigger means.

[0018] In this case, the lift-up arm is bent toward the base so that its tip is approximately parallel to the base arm when it engages with the base arm via the trigger means, so it is approximately parallel to the base arm and can be stored compactly without having to set the receiver in the rig long. Also, when the base arm and the lift-up arm are engaged via the trigger device, the engaging parts of both arms are approximately parallel, making it easy to engage them.

[0019] [4] The leg binding trap of the present invention may be configured such that the base arm and the lift-up arm are removably fixed to the torsion coil spring.

[0020] In this case, the torsion coil spring can be easily replaced, so for example, when using two torsion coil springs, the strength of the torsion coil springs can be set to two types: strong and strong, strong and weak, weak and weak, or strong and none (using only one spring), weak and none, etc., making it possible to set the operating strength to multiple types of strength to suit the animal to be captured.

[0021] [5] The leg-binding trap of the present invention may be configured so that the lifting arm can be rotated and adjusted in the axial direction.

[0022] In this case, when setting the trap, when the base arm and the lifting arm are set in a set state (set state) by the trigger means, the inclination of the tip tool in the circumferential direction of the axis when engaging the tip tool of the lifting arm with the trigger means can be adjusted to suit individual differences in the trigger means, etc., which is useful for setting the trap more reliably.

[0023] [6] The leg-binding trap of the present invention can also be configured such that the base arm has a pulley for hanging the wire rope, a wire-passing portion is provided close to the pulley, and a flexible or deformable cover is provided to cover the wire-passing portion.

[0024] In this case, when setting the trap, the wire rope is inserted into the internal gap of the pulley at the tip of the lifting arm, then pushed into the cover and held in the wire-passing section, and then hung on the pulley of the base arm.This makes it less likely that the wire rope will become distorted when the trap is activated, and prevents the wire rope from getting caught unintentionally.

[0025] [7] In order to achieve the above object, the present invention can also be configured such that a wire is fixed at a predetermined position on the lifting arm, and the wire is passed through the wire on the downstream side in the forward movement direction from the point where the wire rope is hung on the pulley, and a stopper is attached to the wire from the downstream side of the wire to stop the forward movement of the wire rope and tighten the catching part of the wire rope.

[0026] In this case, when the trap is activated, the wire rope is pulled forward by the tip tool, causing the stopper to catch on the wire, stopping the wire rope from moving forward, and the wire rope becomes taut and the capturing part is pulled tight, allowing the capturing part of the wire rope to more reliably squeeze the animal's legs and capture the animal. [Effects of the Invention]

[0027] To provide a leg-binding trap that improves the rate of capturing an animal by enabling the trapping range by a wire rope to be expanded and by enabling the tip of a jumping arm to move so as to instantly jump towards the leg of an animal when activated and bind the animal. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a front view showing a first embodiment of a leg binding trap according to the present invention. [Figure 2] 2 is a plan view showing an embodiment of the leg binding trap shown in FIG. 1. FIG. [Figure 3] 2 is a perspective explanatory view showing the structure of the trap body of the leg binding trap shown in FIG. 1 as seen from behind. FIG. [Figure 4] FIG. 10 is an enlarged front view showing the state in which the wire rope is threaded through the cover and temporarily secured. [Figure 5] This is an explanatory cross-sectional view showing a leg-binding trap set in an animal trail. [Figure 6] FIG. 10 is an explanatory diagram showing the state in which the leg-binding trap is activated and the animal's legs are bound. [Figure 7]FIG. 10 is a perspective view showing a trap body of a second embodiment of the leg binding trap according to the present invention. [Figure 8] 10 is an explanatory diagram showing the change in the pulling amount of the wire rope when the length of the base arm and the lifting arm is changed. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0029] 1-6, an embodiment of the leg tie trap of the present invention will now be described in more detail. The leg trap W1 comprises a pair of torsion coil springs 3, 3a, a base arm 1 connected to one end of each of the torsion coil springs 3, 3a, a jumping arm 2 connected to the other end of each of the torsion coil springs 3, 3a, a trigger device 4 (shown in Figure 5 described below) that activates the trap, and a wire rope 5 that binds and captures the legs of an animal (prey) when the arms 1, 2 move apart due to the biasing force of the torsion coil springs 3, 3a when the trap is activated (see Figures 1 and 2).

[0030] The torsion coil springs 3, 3a are made of spring steel and are formed in a substantially symmetrical shape (see Figs. 2 and 3). Each torsion coil spring 3, 3a has a coil spring portion 30 wound four times, and spring bars 31, 32 extending from the coil spring portion 30 at an opening angle of approximately 140° (see the imaginary line in Fig. 6).

[0031] The spring bars 31, 32 have an opening angle of 140°, so that the amount of pulling of the wire rope 5 when the base arm 1 and the jumping arm 2 are attached is also large, and therefore the size of the loop of the catching part 51 of the wire rope 5 can be made larger to make it easier to catch an animal.

[0032] The spring bar 31 extends from the outside of the coil spring portion 30 with its middle portion bent diagonally from the outside to the inside, and the spring bar 32 extends from the inside of the coil spring portion 30 (see FIGS. 2 and 3). In FIGS. 1 to 3, the torsion coil springs 3, 3a are in a state where the jump-up arm 2 is hooked on a safety device described later and the biasing force of the torsion coil springs 3, 3a is fully compressed. The base arm 1 is fixed to the tip of each spring bar 31 of the torsion coil springs 3, 3a on the lower side in FIG. 1 via a fixing device 33.

[0033] Fixing device 33 is a die-cast metal block in the shape of a substantially rectangular parallelepiped, with fixing hole 331 extending longitudinally through the center, into which base arm 1 is inserted to fix, and fixing holes 332 extending longitudinally on both sides of fixing hole 331, into which each spring bar 30 is inserted to fix. Base arm 1 is fixed by welding, and each spring bar 30 is fastened and fixed with bolts 333 threaded into fixing device 33 (see the right diagram in Figure 3).

[0034] 1 of the torsion coil springs 3, 3a, a lifting arm 2 is fixed to the tip of each spring bar 32 on the upper side in FIG. 1 via a fixture 34. The lifting arm 2 is bent upward at a predetermined angle at its base as shown in FIG. 1, so that the tip of the lifting arm 2 is approximately parallel to the base arm 1 when the trap is set (at an angle close to horizontal when the trap is set).

[0035] The fixture 34 is a roughly rectangular parallelepiped block made of die-cast metal, with a fixing hole 341 running through the length of the center, into which the lift-up arm 2 is inserted to fix it, and fixing holes 342 running through the length on both sides of the fixing hole 341, into which each spring bar 32 is inserted to fix it.

[0036] The lift-up arm 2 is fastened and fixed with a bolt 343 threaded into the fixture 34, and each spring bar 32 is fastened and fixed with a bolt 344 threaded into the fixture 34 (see the left diagram in Figure 3).

[0037] As described above, the base arm 1 is fixed to the fixing device 33 by welding, but the lift-up arm 2 is fixed to the fixing device 34 by a bolt 343, so it can be adjusted in the direction of entry and exit relative to the fixing hole 341 and in the axial direction.

[0038] This has the advantage that when setting the trap, when the base arm 1 and the jumping arm 2 are set by the trigger device 4, the inclination of the tip hook 21 in the circumferential direction of the axis when the tip hook 21 of the jumping arm 2 is engaged with the trigger device 4 can be adjusted to suit individual differences in the trigger device 4, etc., making it easy to set up.

[0039] The lifting arm 2 may also be fixed by welding to the fixing hole 341, and in this case, the position in the longitudinal direction relative to the fixing device 34 can be adjusted by using each bolt 343 of the fixing device 34. A type in which both the base arm 1 and the lifting arm 2 are adjustable (leg binding trap W2) will be described later.

[0040] The base arm 1 and the lift-up arm 2 are made of steel. The base arm 1 has a predetermined length, and its base is inserted into the fixing hole 331 of the fixture 33 and welded as described above. To the tip of the base arm 1, a base member 6 is attached by a pivot pin 60 facing downward so that it can swing back and forth to adjust the angle. The base member 6 has a structure in which a large-diameter disk-shaped seat portion 62 is provided at the tip of a circular tube 61.

[0041] A pulley receiver 14 is attached to the base arm 1 slightly behind the base member 6, with its open side facing upward. A pulley 15 is rotatably attached to the base (bottom in Figure 1) of the pulley receiver 14 by an axle pin 141 that passes through a pin hole (reference number omitted). The axle pin 141 is simply fixed in place by fastening one end with a rubber ring (not shown), and after the trap is activated, it comes off due to the impact of the prey's struggle, and the pulley 15 also comes off.

[0042] Also, the lower end of the member on one side (the lower side in Fig. 2) of the pulley receiver 14 is partially cut out to provide a wire-passing portion 144, and a thin stainless steel cover 145 is fixed coaxially with the shaft pin 141 so as to cover the wire-passing portion 144 from the outside. The cover 145 is flexible (deformable), and a portion of the lower end is bent inward, so that when a wire rope 5 (described later) is pushed in, it can be held (temporarily fastened) in the wire-passing portion 144, and can be released relatively easily when an external force is applied (see Fig. 1).

[0043] A stop pin 146 constituting a safety device is passed through a pin hole (not shown) at the top of the pulley receiver 14, and one end is secured with a wing nut 147. To prevent the trap from being accidentally activated when setting the trap, the stop pin 146 is passed through the pin hole to secure the jump-up arm 2 after setting it up, as will be described later, and finally the stop pin 146 and wing nut 147 can be removed to set the trap.

[0044] A vertical engaging groove 11 (see the middle diagram in Figure 3) is provided at the tip of the base arm 1 over the entire diameter, and a locking pin 12 is attached horizontally so as to pass through the engaging groove 11. The locking pin 12 is adapted to engage with a vertical engaging piece 43 of the trigger device 4 (described later) from below.

[0045] The length of the lift-up arm 2 connected to the spring pin 32 of the torsion coil springs 3, 3a is set to be approximately the same as the length of the base arm 1. A tip hook 21, which is a tip tool, is attached to the tip of the lift-up arm 2, with the open side facing forward (see Figure 2). On both sides of the tip of the tip hook 21, hook portions 210 protrude to hook onto the trigger tool 4, which will be described later. In addition, the tip hook 21 has a guard portion 211, which has an approximately semicircular outer shape, protruding forward.

[0046] A pin hole (not shown) is provided in the guard portion 211, and a pulley 22 is attached to the inside of the tip hook 21 via an axle pin 212 fitted into the pin hole. The guard portion 211 is formed with a larger diameter than the outer periphery of the pulley 22, and guards the pulley 22 to prevent damage. The axle pin 212 is attached simply by fastening one end with a rubber ring (not shown), similar to the axle pin 141, and after the trap is activated, it comes off due to the impact of the prey struggling, and the pulley 22 also comes off.

[0047] Furthermore, a through hole 23 is provided in the middle of the lift-up arm 2, penetrating in the vertical direction. A wire 24, which is a metal wire, is inserted into the through hole 23 and twisted, forming a loop (reference number omitted) at the tip, which is attached. A wire rope 5, which will be described later, is passed through the wire 24, and the wire rope 5 is simply fixed in place by the wire 24. A stopper 50, whose fixing position can be adjusted by a thumbscrew (reference number omitted), is attached to the wire rope 5 at a position slightly away from the upstream side in the sliding direction (to the right in Figure 1) (see Figure 1).

[0048] When setting the trap, a trigger device 4 and a footboard 7 are hooked to the tips of the base arm 1 and the lifting arm 2 to form a leg-binding trap W1. The trigger device 4 has an angle-iron-shaped receiving member 40 (shown in Figure 5) to which a footboard 7 (see Figure 5) is attached, and at both ends of the vertical part of the receiving member 40, there are erected grappling claws 41 whose upper sides are slightly curved backward. A mounting device 42 is attached vertically to the center of the vertical part of the receiving member 40.

[0049] The mounting fixture 42 is provided with a vertical hook piece 43, and at the lower rear portion of the vertical hook piece 43 is provided a hook recess (not shown) that is hooked from below onto the hook pin 12 at the tip of the base arm 1, as described above. The angle of the mounting fixture 42 relative to the vertical hook piece 43 can be adjusted using an angle adjuster 45, and this adjustment also makes it possible to change the angle of the tread 7.

[0050] Furthermore, a hook plate 44, which is hooked onto the hook portion 210, is provided at the top of the vertical hook piece 43 so as to be approximately horizontal (see Figure 1). The hook portion of the hook portion 210 and the hook plate 44 is located close to the hook pin 12 in the front-to-rear direction, so that the force acting on the vertical hook piece 43 when setting the trap is balanced and stable.

[0051] The wire rope 5 used to capture an animal has a loop-shaped capture section 51 at its tip, which is secured to a metal fitting 52 and looped and passed through the metal fitting 52. With the metal fitting 52 substantially fixed on the side of the animal's legs, the capture section 51 is stopped by the stopper 50 being caught on the wire 24, and is then further tightened by pulling the wire rope 5 forward.

[0052] When setting the trap, the wire rope 5 is passed through the internal gap of the pulley 22 at the tip of the lifting arm 2 and then passed over, and then the wire rope 5 is pushed into the cover 145 and held in the wire-passing section 144, and then passed over the pulley 15 of the base arm 1. This means that when the trap is activated, the wire rope 5 is less likely to become distorted until it is released, and it is possible to prevent the wire rope 5 from getting caught in an unintended place and failing to capture an object.

[0053] Furthermore, the wire rope 5 is passed through the wire 24 of the lifting arm 2 and simply fixed in place, and then extended rearward and connected to a standing tree (not shown) or the like. The loop 53 (see Figures 5 and 6) provided on the wire rope 5 prevents the wire rope 5 from being cut or damaged due to twisting.

[0054] (action) The method of use and operation of the leg binding trap W1 will now be described with reference mainly to FIGS. When setting the leg-binding trap W1, first dig a trap hole (number omitted) and place a stainless steel hole box 8 at the bottom of it to stabilize it. Next, place the leg-binding trap W1 and set the base member 6 at an appropriate height near the rear wall of the hole box 8 (left side in Figure 5). At this time, place a wooden board or tamp down soil under the base member 6 to stabilize it.

[0055] Next, the base arm 1 and the lift-up arm 2 are retracted against the biasing force of the torsion coil springs 3, 3a, and the base arm 1 and the lift-up arm 2 are set in a trap-set state by the trigger device 4. Specifically, first, the vertical hook piece 43 is hooked from below onto the hook pin 12, and the hook portion 210 of the tip hook device 21 is hooked from below onto the hook plate 44 to stabilize it (see Figures 1 and 5).

[0056] When setting up the trap, after inserting the jump-up arm 2 into the gap in the pulley receiver 14, a stop pin 146 (see Figure 1) is inserted into the pulley receiver 14 so that it is positioned outside the jump-up arm 2, and secured with a wing nut 147 to prevent the jump-up arm 2 from jumping up, ensuring safety in case of an emergency.

[0057] At this time, since the lift-up arm 2 is bent and inclined on the base side as described above, the front part is approximately parallel to the base arm 1, and the length of the pulley receiver 14 does not need to be set long, but it fits within the length of the pulley receiver 14. Furthermore, when engaging the base arm 1 and the lift-up arm 2 via the trigger device 4, the engaging portions of both arms are approximately parallel, making it easy to engage them.

[0058] Furthermore, the tip edge of the footplate 7 attached to the trigger device 4 is hooked over the edge of the hole box 8, and the wire rope 5's capture portion 51 is expanded to a predetermined size and placed in the wire storage portion 80 at the top of the hole box 8. The wire rope is then hooked over the hooking claw 41 of the trigger device 4 and shaped to roughly surround the footplate 7 (with a portion of the side away from the trap body hanging over the top). Finally, the leg-binding trap W1 and the hole box 8 are covered with soil, fallen leaves, or grass 9 to an appropriate thickness to camouflage them. At this time, it is preferable to cover the foot-binding trap W1 appropriately deeply so that the smell of a human touching the human is difficult for the animal to detect.

[0059] When setting a trap, particularly on sloping ground, the angle of tread 7 may need to be fine-tuned to match the angle of the surrounding ground. In this case, the angle of mounting fixture 42 relative to base arm 1, i.e., the angle of tread 7, can be adjusted by moving hook portion 210 of tip hook 21 back and forth in the direction of arrow a (see FIG. 1) to adjust the engagement position with hook plate 44 back and forth.

[0060] 1, for example, if the hook portion 210 is moved slightly to the left of the arrow a, the vertical hook piece 43 will move slightly counterclockwise around the hook pin 12, tilting the right side of the step board 7 upward. Also, if the hook portion 210 is moved slightly to the right of the arrow a, the vertical hook piece 43 will move slightly clockwise around the hook pin 12, tilting the right side of the step board 7 downward. In this way, the angle of the step board 7 can be adjusted even when using a trigger device 4 that does not have an angle adjuster 45.

[0061] When the foot L of a hunting animal steps on the footplate 7, the footplate 7 falls, the trigger device 4 comes off the tip of the base arm 1 and the jumping-up arm 2, and both arms 1 and 2 rotate and move instantaneously due to the biasing force of the torsion coil springs 3 and 3a, spreading out (see Figure 6). As a result, the tip side of the jumping-up arm 2 jumps up, the tip of the wire rope 5 is pulled forward with force, the stopper 50 gets caught on the wire 24 and stops, and since the squeezing metal fitting 52 is also substantially fixed on the foot L side, the capturing part 51 further squeezes the foot L.

[0062] Furthermore, as described above, the arms 1 and 2 do not have crossed pivots at the rear, and are attached to the spring bars 31 and 32 of the torsion coil springs 3 and 3a via fasteners 33 and 34, respectively, thereby reducing the weight. Therefore, even if there is a sufficient amount of soil, fallen leaves, and grass 9 around the leg binding trap W1 as described above, the movement and force of the wire rope 5 causes the rear side of the leg binding trap W1 (the torsion coil springs 3 and 3a side) to jump up instantaneously, and when the jump-up arm 2 is activated, the tip hook 21 jumps up and at the same time moves as if jumping up to the foot L, colliding with it and squeezing the foot L at a deep position (closer to the base) (see Figure 6).

[0063] Thereafter, as the animal struggles, the wire 24 is cut by the wire rope 5 and the pulleys 15, 22 are released by the structure described above, so that both arms 1, 2 also come off the wire rope 5, leaving only the wire rope 5 to tie the animal to the standing tree. Also, by both arms 1, 2 coming off the wire rope 5, damage to both arms 1, 2 and torsion coil springs 3, 3a caused by the animal's struggle can be minimized.

[0064] Furthermore, the leg-binding trap W1 allows arms 1 and 2 to expand sufficiently quickly, and even if the diameter of the wire rope 5 is made somewhat larger, it will still function without any problems, making it difficult to miss the timing of capture and resulting in a high capture rate. This makes it possible to use a thicker diameter wire rope 5 and improve its durability. Also, since both arms 1 and 2 can be expanded sufficiently, and the movement width of the jump-up arm 2 required for capture can be obtained even if both arms 1 and 2 are shortened, there is the advantage that the trap can be made compact.

[0065] Furthermore, the torsion coil springs 3, 3a can be removed from both arms 1, 2 and can be easily attached. This allows the trap's operating strength to be adjusted depending on the animal being trapped. That is, by removing one of the two torsion coil springs 3, 3a and leaving only one, or by replacing that one with a stronger or weaker spring, the operating strength can be finely adjusted as described above.

[0066] A second embodiment of the leg binding trap of the present invention will be described with reference to Fig. 7. Fig. 7 shows the body of the leg binding trap W2, with the wire rope 5 omitted, but for ease of explanation, the symbol W2 has been added. Since the leg binding trap W2 has a structure similar to that of the leg binding trap W1, the same symbols will be used for the common parts and the explanation will be incorporated, and only the different parts will be explained.

[0067] The base arm 1a and the lifting arm 2a of the leg binding trap W2 are longer at the base end than the base arm 1 and the lifting arm 2 of the leg binding trap W1. The base arm 1a and the lifting arm 2a can move forward and backward relative to the fixing devices 33 and 34, respectively, and can be fixed at appropriate positions by bolts 334 and 343.

[0068] This makes it possible to adjust the length of protrusion (from the tips of the spring bars 31, 32) from the fixtures 33, 34, i.e., the size of the leg binding trap W2. Scales 19, 29 are provided at predetermined intervals on the base side of the base arm 1a and the base side of the lift-up arm 2a. The provision of the scales 19, 29 allows for easy adjustment of the length of protrusion from the fixtures 33, 34.

[0069] As shown in Figure 8, the leg binding trap W2 can increase the amount of pulling of the wire rope 5 when the trap is activated by adjusting the length from the center of expansion of the torsion coil spring of the base arm 1a and the lifting arm 2a to be longer. In more detail, when both arms 1a, 2a are retracted and extended, the span between the tip of the pulley 15 of the base arm 1a and the tip of the front hook 21 of the lifting arm 2a when both arms 1a, 2a are expanded increases from S1 to S2.

[0070] This increases the amount of pulling on the wire rope 5 when the trap is activated, and even if the size of the capture part 51 at the tip of the wire rope 5 is set large in advance, the capture part 51 can be sufficiently tightened. Therefore, it becomes possible to set a larger capture range for animals when setting up the trap, and the capture rate of animals can be improved.

[0071] In other words, with one leg-binding trap W2, for example, if the base arm 1a and the jump-up arm 2a are set short and the capture part 51 is made small, it can be used for small animals such as foxes, and if the base arm 1a and the jump-up arm 2a are set long and the capture part 51 is made large, it can be used for large animals such as bears.

[0072] The terms and expressions used in the present specification and claims are merely for explanatory purposes and are not limiting in any way, and are not intended to exclude terms and expressions equivalent to the features described in the present specification and claims and parts thereof. It goes without saying that various modifications are possible within the scope of the technical idea of ​​the present invention. [Explanation of symbols]

[0073] W1 Leg Binding Trap 1 arm 11. Hook-up groove 12 Latching pin 14 Pulley holder 141 Axle pin 144 Wire passage 145 Cover 146 Stop pin 147 Wing Nut 15 Pulley 2. Jumping Arm 21 Tip hook 210 Latch part 211 Guard Section 212 Axle pin 22 Pulley 23 Through hole Platform 24 3, 3a Torsion coil spring 30 Coil spring part 31, 32 Spring bars 33 Fixtures 331 Fixing hole 332 Fixing hole 333 volts 34 Fixtures 341 Fixing hole 342 Fixing hole 343 volts 344 volts 4 Trigger 40 Angle iron-shaped support member 41 Grabbing claw 42 Mounting fixture 43 Vertical hanging piece 44 Hanging plate 45 Angle adjuster 5 Wire rope 50 Stopper 51 Capture Department 52 Aperture fittings 53 Monkey Ring 6 Base member 60 Axle Pin 61 Circular tube 62 Seat area 7 Treadboard 8-hole box 80 Wire storage section 9 Fallen leaves and grass L Animal Paw W2 Leg Binding Trap 1a Base arm 19 scales 2a Jumping Arm 29 scales

Claims

1. A torsion coil spring, a base arm fixed directly or indirectly to one end portion of each spring bar of the torsion coil spring; a jumping arm fixed directly or indirectly to the other tip end of each spring bar of the torsion coil spring; a trigger means for engaging the base arm and the lifting arm to set the trap in a rigged state and releasing the rigged state to activate the trap; and a wire rope that binds and captures the animal's legs by expanding the base arm and the jumping arm when the set state is released. Leg binding trap.

2. The length of the base arm and the lift-up arm that protrude from the tip of the spring bar is adjustable. The leg trap according to claim 1.

3. The lift-up arm is bent toward the base so that the tip is approximately parallel to the base arm when the lift-up arm engages with the base arm via the trigger means.

3. A leg trap according to claim 1 or 2.

4. The base arm and the jump-up arm are removably fixed to the torsion coil spring.

3. A leg trap according to claim 1 or 2.

5. The lift-up arm can be rotated around the axis.

3. A leg trap according to claim 1 or 2.

6. The base arm has a pulley for hanging the wire rope, a wire-passing portion is provided in the vicinity of the pulley, and a flexible or deformable cover is provided to cover the wire-passing portion.

3. A leg trap according to claim 1 or 2.

7. A wire is fixed at a predetermined position on the lifting arm, and the wire is passed through the wire on the downstream side in the forward movement direction from the point where the wire rope is hung on the pulley, and a stopper is attached to the wire from the downstream side of the wire to stop the forward movement of the wire rope and to tighten the catch part of the wire rope.

3. A leg trap according to claim 1 or 2.

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