Pest cage with closed door structure

Abstract

To provide a vermin cage door closing structure enabling a simple and efficient structure for keeping a door open state and quick door closing operation when capturing vermin.SOLUTION: A solenoid interlocking mechanism 400 of door closing operation defined as a door closing interlocking mechanism interposed between a door closing operation part of a vermin door and a plunger part of a solenoid for closing the door of a vermin cage VC by electrical drive stress of the plunger part, includes a string body connected to a tip end of the plunger, an engagement ring connected to a tip end of the string body, a stationary ring slidably engaged with the engagement ring and having a lower end fixed to a frame body of the vermin cage, a flip-up shaft whose tip end is inserted into a hollow part of the engagement ring and whose base end is formed in a ring body, a shaft body pivotally supporting the ring body formed on the base end of the flip-up shaft, a flip-up lever coming into contact with the shaft base end of the flip-up shaft from below, a cage door operation connecting part formed at the base end of the flip-up lever, and an operation string body 480 whose terminal end is connected to the cage door operation connecting part and whose tip end is interlockingly connected to the openable / closable cage door.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pest cage door closing structure that can detect the intrusion of a pest into the cage and automatically close the door. [Background technology]

[0002] It is important for pest cages used to capture harmful animals such as wild boars to lure the target pest into the cage, and then quickly close the cage door after confirming that the pest has entered the cage. For this reason, an animal capture device described in Patent Document 1 and a door closing device described in Patent Document 2 are disclosed in which a string, such as a wire or rope, for activating the cage's closing mechanism is installed inside the cage, and when the pest touches the string, an intrusion is detected and the door is closed at the same time.

[0003] The animal capture device described in Patent Document 1 includes an operating mechanism for closing a door at the top of a cage. The operating mechanism is composed of a pivoting member, which is primarily a rectangular plate-like member with a notched recess cut out at one longitudinal end and a locking hole drilled at the other end; a fulcrum shaft that rotatably supports the center of the pivoting member; a connecting rope, one end of which is connected to the bottom of the cage door and the other end of which is hooked into the notched recess of the pivoting member to lift the cage door upward and open the cage; and a traction rope, one end of which is fixed to the locking hole of the pivoting member and the other end of which is fixed to the side of the cage so as to cross the cage interior. With this configuration, when a pest that has entered the cage touches the traction rope, the pivoting member rotates, causing the front connecting rope hooked in the notched recess to come loose. With the front connecting rope that was lifting the cage door coming loose, the cage door falls under its own weight, closing the door.

[0004] The door closing device described in Patent Document 2 primarily comprises a pin member that can extend outward from the cage (toward the cage door) while tensioning a tension spring; a lever member that biases the tension spring in the direction of tension and can be rotated to release the bias; a weight that rotates the lever member by dropping outward from the lever member's pivot axis; a support plate that supports the weight from above before dropping; and a string with one end attached to the support plate and the other end stretched and fixed inside the cage. With this configuration, the lever member maintains the tension of the tension spring, causing the pin member to extend outward from the cage. The cage can be kept open by placing the lifted cage door on top of the extended pin member. The closing operation of the closing device involves a vermin entering the cage and touching and pulling the tensioned string inside, causing the weight supported by the support plate to lose support and fall. The falling weight rotates the lever, and as it rotates, the bias on the tension spring is released, and the initial tension causes the pin member to slide inward from the cage. When the pin member slides inwardly of the cage, the cage door placed on top loses its support and falls downward, thereby closing the door. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-130051 [Patent Document 2] Patent Publication No. 2021-073867 Summary of the Invention [Problem to be solved by the invention]

[0006] The animal capture devices and door closing devices described in Patent Documents 1 and 2 allow the cage doors to be closed smoothly, and are able to reliably capture any pests that have entered the cage. However, both inventions are designed to detect intrusion and initiate the closing operation when a vermin touches a string or wire stretched inside the cage. Therefore, there is a risk that the vermin will avoid the string and not penetrate deep into the cage, preventing the closing operation. Also, since the closing operation is initiated by touching the wire, there is a risk that even a baby wild boar or garbage blown by the wind, which is not a target for capture, may touch the string and initiate the operation, causing the cage door to close.

[0007] Furthermore, the animal trapping device described in Patent Document 1 lifts the cage door and keeps it open by hooking a string into a recessed notch in a swivel member that is in a freely swivelable state. However, cage doors generally fall under their own weight, closing the cage, and are often very heavy to prevent the captured pest from easily lifting the cage door once it has been lowered. Therefore, balance can only be maintained and the cage door can continue to be lifted when the pivoting member is aligned in a straight line with the string. Considering the weight of the cage door, as described above, maintaining balance can be deemed extremely unstable. Therefore, there is a risk that the pivoting member will pivot and close the cage door due to unexpected events other than the pest touching the string, such as the impact of an object colliding with the pest cage. Furthermore, as described above, because cage doors are generally heavy, there is a risk that an uneven load will be applied to the notched recess in the pivoting member that hooks the front connecting rope, causing it to deform.

[0008] In addition, the door closing device described in Patent Document 2 closes the cage door by dropping a weight on a lever member that biases a tension spring that causes a pin member to protrude outward from the cage, causing the lever member to rotate and release the bias. However, repeated use of the pest cage may cause the lever member to deform due to deterioration over time or the weight of the weight, which may prevent the door from closing smoothly.

[0009] The present invention aims to provide a pest cage door closing structure that can maintain a heavy cage door in an uplifted state (cage door open state) with minimal force, detects the intrusion of a pest into the cage based on information from a sensor installed in the cage, and closes the pest cage using a solenoid interlocking mechanism that is activated by an electrical signal sent from the sensor. [Means for solving the problem]

[0010] The pest cage door closing structure of the present invention, which has been made to solve the above problems, is characterized in that an infrared sensor is disposed in the pest cage, and when the infrared radiation is blocked by a pest and electricity is turned on, the pest cage door is closed by operating the plunger part of the solenoid. In this pest cage door closing structure, the solenoid interlocking mechanism for the door closing operation comprises a door closing interlocking mechanism interposed between the door closing operation part of the pest door and the plunger part of the solenoid so that the pest cage is closed by the electrical driving action of the plunger part of the solenoid, and a string connected to the tip of the plunger part. the cage body, an engaging ring connected to the tip of the string, a fixed ring slidably engaged with the engaging ring and having its lower end fixed to the frame body of the pest cage, a pop-up shaft whose tip is inserted into the hollow part of the engaging ring and whose base end is formed into a ring, a shaft body that supports the ring formed at the base end of the pop-up shaft, a pop-up lever abutting the base end of the pop-up shaft from below, a cage door operating connection part formed at the base end of the pop-up lever, and an operating string whose end is connected to the cage door operating connection part and whose tip is linked to a cage door that can be opened and closed freely. [Effects of the Invention]

[0011] According to the pest cage door closing structure of the present invention, an infrared sensor detects the intrusion of a pest into the pest cage, and the cage door is closed based on the electrical signal from the infrared sensor, thereby reliably detecting pests that have invaded the cage and preventing malfunctions due to animals that are not the target of capture or obstacles carried by the wind.

[0012] In addition, by changing the mounting position of the infrared sensor to change the detection range of the sensor, it is possible to target the cage door closing operation to the pest to be captured.

[0013] In addition, the solenoid interlocking mechanism converts the force of the cage door falling under its own weight and trying to close it into a rotational motion using a lift-up lever, and then uses the principle of leverage to engage this rotational motion with minimal force, thereby maintaining the open door state, i.e., the cage door in a lifted state.

[0014] In addition, the solenoid interlocking mechanism is designed to distribute the weight of the cage door among each component, allowing each to maintain the open state with minimal force, thereby reducing the burden on each component and minimizing deformation and deterioration over time that occur with repeated use. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic side view showing the open door state of a pest cage equipped with a pest cage closing door structure according to one embodiment of the present invention. FIG. [Figure 2] 1 is a schematic side view showing a closed door state of a pest cage equipped with a pest cage door closing structure according to one embodiment of the present invention. [Figure 3] 1 is a schematic side view showing a pest cage door closing structure according to one embodiment of the present invention before operation. FIG. [Figure 4] 1 is a schematic side view showing a pest cage closing door structure according to one embodiment of the present invention after operation. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] The gist of this invention is a pest cage door closing structure characterized by being configured such that an infrared sensor is disposed in the pest cage, and when infrared radiation is interrupted by a pest and electricity is turned on, the pest door is closed by operating the plunger part of the solenoid, and the solenoid interlocking mechanism for the door closing operation comprises a door closing interlocking mechanism interposed between the door closing operation part of the pest door and the plunger part of the solenoid so that the pest cage is closed by the electrical driving action of the plunger part of the solenoid, a string connected to the tip of the plunger part, and a string connected to the tip of the string. the lift-up shaft having a tip inserted into the hollow portion of the engagement ring and a base end formed into a ring; a shaft body that supports the ring body formed at the base end of the lift-up shaft; a lift-up lever that abuts the base end of the shaft of the lift-up shaft from below; a cage door operating connection part formed at the base end of the lift-up lever; and an operating cord whose end is connected to the cage door operating connection part and whose tip is linked to the cage door that can be opened and closed.

[0017] [1. Configuration of pest cage door closing structure] Hereinafter, an embodiment of the pest cage door closing structure according to the present invention will be described with reference to the accompanying drawings. The following embodiment is an example of the present invention, and is not intended to limit the technical scope of the present invention.

[0018] 1 and 2 respectively show an open state and a closed state of a pest cage equipped with a pest cage door closing structure according to this embodiment, and are right side views with the side having an entrance / exit through which pests enter and exit as the front. Figs. 3 and 4 respectively show the pest cage door closing structure according to this embodiment before and after operation, and are right side views similar to Figs. 1 and 2.

[0019] The pest cage door closing structure M according to this embodiment is provided in a pest cage VC as shown in Figures 1 and 2. The purpose of providing the structure is to detect the intrusion of a pest into the cage using an infrared sensor 100 provided on the side of the pest cage VC, and to close the cage door.

[0020] The pest cage VC consists of a box-shaped cage body C, an entrance E that is opened on one of the four opposing sides of the cage body C, a cage door D that closes the entrance E, a cage door guide G that is installed along the opening of the entrance E, a support pillar B that is installed on the top of the cage body C and has a pulley P at its upper end, and an operating string insertion part I that is installed on the top of the cage body C. When a harmful animal V enters the inside of a cage body C from an entrance E, the entrance E is closed by a cage door D, thereby capturing the harmful animal V in the harmful animal cage VC.

[0021] When the pest cage VC is in an open state, the cage door D is lifted up above the entrance E, and when a pest V is captured, it drops under its own weight to block the entrance E. In addition, when the cage door D has been dropped to block the entrance E, it weighs, for example, about 15 kg so that it cannot be lifted up by the pest V captured inside the cage body C.

[0022] The cage door guide G assists the cage door D to fall straight. Specifically, it is made of a U-shaped or L-shaped metal member, and when the cage door guide G is U-shaped, for example, it is installed so that the cage door D is accommodated in the U-shaped opening. The cage door guide G of this embodiment shown in Figures 1 and 2 is illustrated with a length that extends from a position slightly higher than the top of the cage body C to a position higher than the ground, but in reality, there are no particular limitations on the length as long as it is the length from a position higher than the cage body C to the ground.

[0023] Support pillar B is either integral with or fixed to cage body C at the top near entrance E of cage body C. Support pillar B is used to support cage door D when it is open (when cage door D is lifted up) or when cage door D is closing. For this reason, it is made to be roughly the same length as cage door D.

[0024] In addition, a pulley P is provided at the upper end of the support pillar B, and by passing an operating string 480 connected to the cage door D through this pulley P, the cage door D can be smoothly dropped when the door is closed, and the cage door D can be easily lifted when setting the trap, i.e., when lifting the cage door D. The support pillar B shown in Figures 1 and 2 is illustrated as a single pillar on the cage body C, but in order to increase strength, it is also possible to insert a reinforcing member diagonally from the top surface of the cage body C toward the support pillar B.

[0025] The operating cord insertion portion I is intended to change the angle of the operating cord 480 extending from the pulley P in order to hook the operating cord 480 to the cage door operating connection portion 473 of the pest cage closing door structure M described below. The operating cord insertion portion I is integral with or fixed to the upper portion of the cage body C and has an inverted U-shape. However, the operating cord insertion portion I may have any shape as long as it can insert the operating cord 480 that passes through the pulley P and extends obliquely toward the cage body C. For example, it may be a ring-shaped or thin plate-shaped portion with a small-diameter insertion hole. Furthermore, the position of the operating cord insertion portion I is preferably near the pest cage door closing structure M as shown in Figures 1 and 2, because the stress acting upward decreases the further from the support post B. However, the position of this operating cord insertion portion I is not limited to the position shown in the figures, and it may be located between the support post B and the pest cage door closing structure M.

[0026] As shown in Figures 1 to 4, the pest cage door closing structure M mainly consists of an infrared sensor 100 installed on the side of the pest cage VC, and a solenoid interlocking mechanism 400 that receives electricity from the infrared sensor 100 and operates to close the door.

[0027] The solenoid interlocking mechanism 400 is composed of a solenoid 410 electrically connected to the infrared sensor 100, a string 420 connected to the tip of the string 420, an engagement ring 430 connected to the tip of the string 420, a fixing ring 440 that engages with the engagement ring 430 and has its base end fixed to a frame body c1, which is a component of the cage main body C, a flip-up shaft 450 whose tip is inserted into the hollow part of the engagement ring 430 and whose base end is formed into a ring body 451, an axle body 460 that supports the ring body 451 formed at the base end of the flip-up shaft 450, a flip-up lever 470 that abuts the base end of the shaft of the flip-up shaft 450 from below, a cage door operating connection part 473 formed at the base end of the flip-up lever 470, and an operating string 480 whose end is connected to the cage door operating connection part 473 and whose tip is interlockedly connected to a cage door D that can be opened and closed.

[0028] The frame body c1 refers to a metal wire or thin plate material that forms the cage body C. The solenoid 410, the fixing ring 440, and the base part 471 that supports the flip-up lever 470 (described later) are fixed to a thin plate-like base plate 300, as shown in Figures 3 and 4, and the base plate 300 is fixed to the frame body c1. In other words, the pest cage door closing structure M is fixed to the upper frame body c1 of the pest cage VC via the base plate 300.

[0029] The infrared sensor 100 is provided on the side of the pest cage VC and is electrically connected to the solenoid 410 via electrical wiring 200. When a pest V passes in front of the infrared sensor 100, the infrared radiation is cut off and electricity is applied to the electrical wiring 200, thereby activating the solenoid 410.

[0030] The infrared sensor 100 can be attached at a position lower than the height of the vermin V to be captured, thereby reliably detecting intrusions into the cage body C. Furthermore, by attaching the sensor at a height slightly lower than the expected height of the vermin V to be captured, it is possible to reduce false detections caused by objects that are not the target of capture, such as young animals that are not the target of capture, or debris that has been blown by the wind or the like and has entered the cage body C.

[0031] Furthermore, the infrared sensor 100 does not need to be in use all the time, but can be used only during the hours the user desires. For this reason, the infrared sensor 100 is equipped with a selector switch (not shown) that allows the operation of the infrared sensor 100 to be switched between all day, daytime only, and nighttime only. In this way, by making it possible to switch the operation time of the infrared sensor 100, it is possible to reduce energy consumption during times when pests are not around. To determine whether it is daytime or nighttime, a timer type that uses a clock and is used only at a preset time, or an optical sensor type that uses a light receiving sensor to determine whether it is daytime or nighttime, is used.

[0032] Furthermore, it is also conceivable that the infrared sensor 100 may be a reflective type, so that the size of an individual that has entered the cage body C can be determined and a decision made as to whether to close the cage door D. Specifically, an infrared sensor 100 is installed on the top surface of the cage body C and emits infrared rays downward. When the infrared rays are reflected by an invading vermin V, the distance from the top surface of the cage body C to the back of the vermin V, i.e., the height of the vermin V, is calculated from the time it takes for the infrared rays to be reflected, and a decision is made as to whether to close the cage door D based on a preset reference value.

[0033] The solenoid 410 comprises a coil 411 that generates a magnetic field in a fixed direction when current is applied, a plunger that moves in and out of the interior of the coil 411 under the influence of the magnetic field, and a box 413 that houses the coil 411 and the plunger.

[0034] Plunger portion 412 is arranged so as to be able to move freely in and out of coil 411 when not energized, and when electricity is applied to coil 411 from infrared sensor 100 via electrical wiring 200, it slides so as to be pulled into the interior of the coil 411 (to the right in Figures 3 and 4).

[0035] Box body 413 has an opening on the front side (left side in FIGS. 3 and 4) through which string body 420 connected to the tip end of plunger part 412 can be inserted.

[0036] One end of string 420 is connected to the tip of the plunger portion, and the other end is connected to engagement ring 430. String 420 moves in response to the sliding movement of plunger portion 412 caused by activation of solenoid 410, and transmits stress to engagement ring 430 connected to the tip. Furthermore, string 420 is interposed between the plunger portion and engagement ring 430 and serves to transmit the sliding of plunger portion 412 to engagement ring 430, and although a stretchable material such as an elastic material is not suitable, any material that meets these conditions may be used.

[0037] Engagement ring 430 is coupled and engaged so as to be slidably connected to fixing ring 440. String body 420 is coupled to engagement ring 430, and is moved by the sliding operation of plunger portion 412 via string body 420.

[0038] The fixing ring 440 is made up of a fixing portion 441 fixed to the substrate 300 and a relay ring 442 connected to the fixing portion 441 .

[0039] The fixing portion 441 may be any member that can be fixed to the substrate 300 and has a hollow portion that engages with the relay ring 442, and may be, for example, an eyebolt as shown in FIGS.

[0040] The relay ring 442 is coupled and engaged between the engaging ring 430 and the fixing portion 441, and is used to adjust the height when the flip-up shaft 450 (described later) is inserted into the engaging ring 430. Therefore, multiple relay rings may be used if the engaging ring 430 can be set to a predetermined height, or may be omitted if the engaging ring 430 can be set to a predetermined height using only the fixing ring 440. However, the engagement ring 430 needs to be provided so that the hollow portion faces the front-rear direction (the left-right direction in the drawing) so that the flip-up shaft 450 can be inserted into the hollow portion.

[0041] The engaging ring 430 and the fixing ring 440 are connected and engaged with each other so that each ring 430, 440 and the fixing portion 441 can slide relative to each other. Therefore, when the plunger portion 412 slides as described above, it is pulled in the sliding direction and tilts to the right side of the drawing.

[0042] The flip-up shaft 450 is made of a linear member and has a ring body 451 formed in an annular shape at the base end. An annular body 451 formed at the base end is supported by a shaft body 460, which will be described later. The tip of the flip-up shaft 450 is inserted into the hollow portion of the engagement ring 430, and when the engagement ring 430 tilts to the right in the drawing due to the sliding of the plunger portion 412 described above, the inserted state is released.

[0043] The shaft body 460 is fixed to a base portion 471 that supports a flip-up lever 470 (described later), and also rotatably supports a ring body 451 at the base end of the flip-up shaft 450 .

[0044] The flip-up lever 470 is a linear member rotatably supported on a pivot 474 provided on a base 471 fixed to the substrate 300, and consists of an abutment portion 472 whose starting end is bent toward the depth in Figures 3 and 4, and a cage door operating connection portion 473 whose end is bent upward. The positional relationship between the rotation shaft 474 and the flip-up lever 470 is such that the rotation shaft 474 is positioned so as to abut against the bent portion that forms the cage door operation connecting portion 473. However, the rotation shaft 474 only needs to axially support the flip-up lever 470 so as to be able to rotatably support the flip-up lever 470, and may be provided directly on the bent portion that forms the cage door operation connecting portion 473.

[0045] One end of the operating string 480 is connected to the top of the cage door D that opens and closes the entrance E of the pest cage VC, and the other end has a hooking loop 481 at the tip for hooking onto the cage door operating connection part 473. The operating cord 480 may be any material that can withstand the weight of the cage door D, and may be, for example, a wire rope or a rope made of synthetic resin.

[0046] [2. How to use the pest cage door structure] Next, a method of using the pest cage door closing structure according to this embodiment will be described. The pest cage door closing structure M is a trap used to capture a pest V, and when an infrared sensor 100 installed in the pest cage VC detects a pest V that has entered the pest cage VC, the cage door D can be closed by a solenoid interlocking mechanism 400 connected by electrical wiring 200.

[0047] First, the preparation for setting up the pest cage VC as a trap, that is, the state before the cage door D is closed, will be described. The infrared sensor 100 is provided on the side of the cage body C and emits infrared rays. The electrical wiring 200 that electrically connects the infrared sensor 100 and the solenoid 410 is not energized unless there is an obstacle that blocks the infrared radiation from the infrared sensor 100.

[0048] Since solenoid 410 is not energized, coil 411 inside does not generate a magnetic field, and the plunger portion is free to slide back and forth (left and right in FIG. 3). Therefore, engagement ring 430 connected to string 420 provided at the tip of plunger portion 412 is in a state where no stress is generated in either direction.

[0049] The tip of the spring-up shaft 450 is inserted into the hollow portion of the engagement ring 430 . A contact portion 472 of a flip-up lever 470 is brought into contact with the vicinity of a ring body 451 formed at the base end of the flip-up shaft 450 from below.

[0050] The lift-up lever 470 is placed in a position where the cage door operating connecting part 473 faces upward by bringing the contact part 472 into contact with the lower part of the lift-up shaft 450.

[0051] A hook loop portion 481 of an operating cord 480 that is pulled to open the entrance E of the pest cage VC is hooked onto the cage door operating connection portion 473 facing upward. This operating cord 480 lifts the cage door D upward via a pulley P directed to the upper end of the support post B of the vermin cage VC. The hook loop portion 481 side that is hooked onto the cage door operating connecting portion 473 is hooked onto and connected to the cage door operating connecting portion 473 after the operating cord insertion portion I is passed through.

[0052] In other words, before the door closing operation, the stress lifting the cage door D can be efficiently distributed by each component of the solenoid interlocking mechanism 400, thereby maintaining the open door state (state in which the cage door D is lifted).

[0053] Specifically, the operating cord 480 that has lifted the cage door D passes through the operating cord insertion portion I, thereby converting the stress that lifts the cage door D to the left direction in FIG.

[0054] The stress tending to move leftward is converted into a force tending to rotate the flip-up lever 470 counterclockwise in FIG. 3 by hooking and connecting the operating cord 480 to the cage door operating connecting portion 473.

[0055] The force that tends to rotate the flip-up lever 470 counterclockwise is regulated by bringing the abutment portion 472 into contact with the flip-up shaft 450. In this case, by comparing the distance from the position where the operating string 480 is hooked and connected to the pivot axis that supports the flip-up lever with the distance from the pivot axis 474 to the abutment part 472 that restricts rotation, the distance from the pivot axis 474 to the abutment part 472 that restricts rotation is longer, and the force that restricts rotation can be weakened by the so-called principle of leverage.

[0056] The jump-up shaft 450 contacts the contact portion 472 at the bottom to regulate the force that tries to rotate the jump-up lever 470, but at the same time, a force that tries to jump the tip of the jump-up shaft 450 upward is generated. The force that tends to bounce the tip of the spring-up shaft 450 upward is regulated by the engagement ring 430 through which the tip of the spring-up shaft 450 is inserted.

[0057] In addition, by positioning the abutment portion 472 in the vicinity of the shaft body 460 that supports the flip-up shaft 450 as shown in FIG. 3 and lengthening the distance from the abutment portion 472 to the tip that is inserted into the engagement ring 430, the force that tries to flip up can be weakened by the principle of leverage, just like the flip-up lever 470.

[0058] The engagement ring 430 is fixed to the substrate 300 by the fixing ring 440, and thus it is possible to restrict the force that tends to cause the spring-up shaft 450 to spring up.

[0059] The configuration and operation of the solenoid interlocking mechanism 400 described above makes it possible to efficiently maintain the cage door D, which is a heavy object, in a lifted state, i.e., the pest cage VC in an open state, with minimal force.

[0060] Next, the door closing operation will be described. In the pest cage door closing structure M, when the infrared radiation from the infrared sensor 100 installed on the side of the cage body C is blocked by a pest V that has entered the cage body C, electricity is passed through the solenoid 410 and the solenoid interlocking mechanism 400 begins to operate.

[0061] When infrared radiation is blocked and current is applied to solenoid 410, a magnetic field is generated in coil 411, generating a force that pulls plunger portion 412 toward the inside of the coil 411 (toward the right in FIG. 4). This causes plunger portion 412 to slide to the right, as shown in FIG. 4.

[0062] As plunger portion 412 slides, string 420 connected to the tip of plunger portion 412 is pulled to the right, with a portion of string 420 being drawn into solenoid 410 .

[0063] The engaging ring 430 is connected to the other end of the string 420 connected to the plunger portion 412, and therefore tilts to the right around the fixed ring 440 as an axis (sliding to the right relative to the flip-up shaft 450) so as to follow the sliding movement of the plunger portion 412 via the string 420.

[0064] When the engaging ring 430 is tilted to the right, the spring-up shaft 450 inserted and engaged in the hollow portion of the engaging ring 430 is released from the inserted state. In other words, releasing the inserted state means that there is no way to restrict the force that tends to bounce up the above-described bounce-up shaft 450.

[0065] Furthermore, a force acts on the spring-up shaft 450 to bounce it up, but the engagement ring 430 that regulates this force can be released with a small force by sliding it in a direction completely different from the force that tends to bounce it up relative to the spring-up shaft 450 (to the right in Figures 3 and 4).

[0066] Since the force that tries to lift up the lift-up shaft 450 is no longer restricted, the force that tries to rotate the lift-up lever 470 can no longer be restricted. That is, the force that opposes the force of the operating cord 480 hooked and connected to the cage door operating connection part 473 to lift the cage door D is lost. Therefore, the flip-up lever 470 rotates counterclockwise as shown in FIG. 4, and as the flip-up lever 470 rotates, the flip-up shaft 450 is flipped upward.

[0067] The cage door operating connection part 473, which was facing upward before operation, rotates and falls to the left, releasing the hooked state of the operating string body 480, causing the cage door D to fall downward under its own weight. When the cage door D falls, the entrance E of the pest cage VC is closed as shown in FIG. 2, and the pest V that has invaded the inside of the cage body C can be trapped and captured.

[0068] As described above, the pest cage door closing structure M of the present invention can detect a pest V that has entered the pest cage VC using the infrared sensor 100, and quickly close the cage door D, thereby reliably capturing the pest V.

[0069] Furthermore, in order to open the pest cage VC, it is necessary to lift up the cage door D, which is a heavy object. The solenoid interlocking mechanism 400 distributes this weight among the various components, allowing it to efficiently maintain the open door state.

[0070] Furthermore, as a method of releasing the restriction to perform the door closing operation, by sliding the engagement ring 430 in a direction (to the right relative to the flip-up shaft 450) different from the direction of the restricting force (upward force acting on the flip-up shaft 450), it is possible to minimize the force required for releasing the restriction. Therefore, a simple mechanism such as the solenoid 410 can be used as a mechanism for sliding the engagement ring 430.

[0071] In the pest cage door closing structure M described above, the sliding action of the engagement ring 430, which is the starting point for the door closing operation, is performed by a coil 411 that generates a magnetic field when current is passed through it, a plunger part that slides under the influence of the magnetic field generated by the coil 411, and a string connected to the plunger part 412, but any configuration is acceptable as long as the restriction on the pop-up shaft 450 can be released by sliding the engagement ring 430. For example, the connecting portion connected to the engaging ring 430 may be slid using a rack and pinion system or the like in response to an operation command transmitted by an infrared sensor 100 provided in the pest cage VC.

[0072] The above-described embodiment is an example of the present invention, and the pest cage door closing structure M according to the present invention is not limited to the above-described embodiment. Therefore, even if it is not the above-described embodiment, various modifications are possible depending on the design, etc., as long as they do not deviate from the technical idea of ​​the present invention. Furthermore, the various effects described above are merely examples, and the effects of the present invention are not limited to those described in this embodiment. [Explanation of symbols]

[0073] V Vermin VC Vermin Cage C. Cage body c1 Frame body Entrance E D Cage door G Cage door guide B Support column P pulley I Operating cord insertion part M Pest cage with closed door structure 100 Infrared Sensor 200 Electrical Wiring 300 boards 400 Solenoid interlocking mechanism 410 Solenoid 411 Coil 412 Plunger part 413 Box body 420 String 430 Engagement ring 440 fixing ring 441 Fixed part 442 Relay Ring 450 Jumping Shaft 451 ring body 460 shaft 470 Flip-up lever 471 Base 472 Contact part 473 Cage operation linkage part 474 Rotating shaft 480 Actuating cord 481 Hook loop

Claims

[Claim 1] An infrared sensor is provided in the pest cage to detect any pests that have entered the pest cage; When a harmful animal is detected by the infrared sensor, the pest cage door closing structure closes the cage door of the pest cage through the operation of a plunger part of a solenoid, The solenoid interlocking mechanism that performs the door closing operation in response to the power supplied from the infrared sensor is A string body connected to the tip of the plunger portion; an engagement ring connected to the end of the string; a fixing ring that is slidably engaged with the engaging ring and has a lower end fixed to the frame body of the pest cage; a spring-up shaft having a tip inserted into a hollow portion of the engagement ring, a base end formed into an annular body, and the annular body supported by the frame body; a flip-up lever having a bent contact portion at a tip thereof, the contact portion contacting the vicinity of the annular body of the flip-up shaft from below; an operating cord whose end is connected to a cage door operating connecting portion formed at the base end of the flip-up lever and whose tip is interlockedly connected to the cage door; Pest cage with closed door structure.

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