JP2603430B2 - Retrograde fence - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retrograde fence suitable for use in a mouse trapping device or the like.

[0002]

2. Description of the Related Art FIG. 10 is a view showing an example of the configuration of a general mouse trapping apparatus. In this figure, reference numeral 1 denotes a rectangular tube-shaped passage, 2 denotes a reverse movement preventing portion communicating with the passage 1, and 3 denotes a reverse movement preventing device. This is a capture container that communicates with the passage 1 via the portion 2, and an inducing agent for attracting rats is installed inside. The reverse movement prevention unit 2 allows the mouse that has entered through the passage 1 to pass through the capture container 3 and prevents the mouse from moving backward from the opening 3 a of the capture container 3 into the passage 1.

[0003] The configuration of the reverse movement prevention unit 2 will be described with reference to FIG. FIG. 11 is an enlarged cross-sectional view taken along line AA ′ of FIG.
In this figure, reference numeral 4 denotes an outer shell of the retrograde prevention unit 2, and reference numeral 5 denotes a retrograde prevention fence, which comprises a passage side fence 8 and a container side fence 10 which are rotatably mounted within the retrograde prevention unit 2 within a range of a rotation angle α. Is done. The fences 8 and 10 are formed in a comb shape as shown in the front view of FIG. In FIG. 11, the projections 9 and 11 are attached to the upper ends of the fences 8 and 10 such that their rotation surfaces coincide with each other.

[0004] In such a configuration, the rat
When the mouse passes through the passage 1 and enters the reverse movement prevention unit 2, the head of the rat comes into contact with the passage-side fence 8 in FIG. Then, the rat pushes the passage-side fence 8 with its head and turns it counterclockwise,
The container side fence 10 is pushed by the head through the gap between the lower end 8a of the fence 8 and the outer shell 4. At this time, since the protrusion 9 also rotates counterclockwise, the container-side fence 10 rotates counterclockwise without the protrusion 11 abutting on the protrusion 9. The mouse passes through the gap between the lower end 10a of the container side fence 10 and the outer shell 4 and advances to the container 3 side. When the rat enters the capture container 3, the fences 8, 10 are moved by their own weight to the lower ends 8a, 10
Rotate clockwise until a contacts the outer shell 4 and return to the initial state (closed state).

The mouse in the capture container 3 shown in FIG.
Through the passage 1 via the container side fence 1 in FIG.
Even if 0 is pushed toward the passage 1, the lower end 10a of the fence 10 does not rotate because it is in contact with the outer shell 4. In addition, capture container 3
Even when the rat inside pulls the container-side fence 10, the protrusion 11 of the container-side fence 10 and the protrusion 9 of the passage-side fence 8 come into contact with each other, so that the container-side fence 10 does not rotate. Thus, escape of the rat to the passage 1 side is prevented. For details of the above-mentioned mouse trapping device, refer to JP-B-59-34301 or JP-B-62-11430.

[0006]

By the way, when observing the ecology of the rat, if there is an obstacle such as a fence in the direction of travel, the mouse pushes with its own head and removes it. It was found to have the habit of hooking and pulling the fence toward you. A rat with a habit of pulling the fence toward you will screw its upper body into the gap created below the fence, lie on its back, slide the body using the fence as a foothold, and pass through the fence.

[0007] Therefore, a rat having a habit of drawing the fence toward the front cannot pass through the retrograde prevention fence having the above-described structure, and has a drawback that the possibility of catching is reduced. The present invention has been made in view of such a background, and an object of the present invention is to provide an anti-retro fence capable of improving the possibility of capturing an animal and reliably preventing an animal from escaping. .

[0008]

According to the first aspect of the present invention,
A first fence pivotally supported on the upper side walls of the passageway through which the animal travels, and a first fence following the first fence and supported on the upper side walls at a predetermined distance from the first fence. A second pillar, a support pillar attached to the first barrier, and rotating together with the first barrier, the axis of which is orthogonal to the first barrier rotation axis; A pillar that is attached to the second fence and that rotates with the second fence, the rotation surface of which is coplanar with the rotation surface of the support pillar, and whose axis is the second fence rotation. When the first and second fences are stationary at right angles to the axis, the supported pillar is perpendicular to the axis extension of the support pillar, and the pivot is located below the first fence pivot axis. A suspension column mounted in parallel with an axis, and a first column below the second rail pivot axis.
A plate body attached toward the fence of the second fence, wherein the second fence is provided on a lower side surface at a position where the second fence abuts on the suspension pillar when rotating in a direction away from the first fence. A suspension plate formed with a notch shaped to lock the movement of the suspension column in a direction away from the first fence of the fence at a predetermined position, wherein the first fence is stationary. In this case, the support pillar and the supported pillar, or the suspension pillar and the notch peripheral edge abut at a predetermined position to prevent the rotation of the second rail, and the first rail is In the case of rotating, the contact at the predetermined position is not performed. The invention according to claim 2 is characterized in that the first fence is pivotally supported at the upper part of both side walls of the passage where the animal travels,
A second fence following the first fence and supported at an upper portion of the side walls at a predetermined distance from the first fence; and a second fence attached to the first fence and rotating together with the first fence. A first support rod having two support columns, each support column having an axis orthogonal to the first rail rotation axis, and each support column having a direction toward the second rail, and A support means arranged to extend upward and downward in a reference plane including a moving shaft and a rotation axis of the second fence; and a support means attached to the second fence, It has two supported columns that rotate with the fence, the axis of each supported column is orthogonal to the second fence rotation axis, and each supported column is in the direction to the first fence. ,
Comprising a target support means being arranged to be extended toward the upper direction and lower direction of the reference plane, when both of the first rail and the second rail is stationary, the reference The support pillar located above the reference plane has a relationship that is substantially perpendicular to the supported pillar located above the plane, and the reference plane has a relationship with the supported pillar located below the reference plane. The lower support pillar has a substantially perpendicular relationship, and the first fence is stationary, and
When the rotation of the second fence is not allowed at all, the two supported
The pillars should be in vertical contact with the tips of the support pillars
Is set and the second fence must be allowed to rotate more than a certain amount.
Wherein one of the two of the support posts are configured to abut vertically on the tip of the support column, said first fence not the contact is made in the case of being rotated to come It is characterized by the following.

[0009]

According to the above construction, when the lower part of the first fence is pushed or pulled by an animal traveling in the passage, the first fence rotates according to the motion of the animal. Then, a predetermined gap is formed between the lower end of the first fence and the passage, and the animal passes through the gap. Then, the second fence pivots with its lower part pushed or pulled by the animal. Then, the second
There is a predetermined gap between the lower end of the fence and the passage, through which the animal passes. When the first fence is stationary, the second fence is supported and supported, or is suspended.
Because the columns and suspension plates prevent rotation , the second bar does not rotate sufficiently when the lower part of the second bar is pushed or pulled by an animal traveling back through the passage. That is, the possibility of capturing the animal is improved, and the animal trying to escape is reliably prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 to 9 used in the description of the present embodiment, common parts are denoted by the same reference numerals. FIG. 1 is a perspective view showing a configuration of a mouse capturing device 12 using a retrograde fence according to a first embodiment of the present invention. In the capturing device 12 shown in FIG. The same reference numerals are given and the description is omitted.

In the anti-retro fence shown in FIG. 1, reference numeral 14 denotes a passage-side fence provided on the side of the passage 1, and a pair of pins 14 a integrally formed on the fence 14 are formed on the side wall of the anti-retro-reflection portion 2. It is supported by the support hole. Reference numeral 15 denotes a container-side fence provided at a predetermined distance from the passage-side fence 14.
A pair of pins 15a formed integrally with the
The shaft is fixed to a support hole formed in the side wall of the horn. Pin 14 above
a, 15a are located at the lower ends 14b, 15 of the fences 14, 15
b is set so that a slight gap is formed between the outer periphery 4 of the back-up prevention unit 2 and the fences 14 and 15
With the rotation shafts 4a and 15a as pivot axes, the passages 1 and the container 3 can rotate freely.

FIGS. 2 and 3 show the structures of the fences 14 and 15 described above.
This will be described with reference to FIG. FIG. 2A is a front view showing the structure of the passage-side fence 14, and FIG. 2B is a sectional view taken along the line BB 'of FIG. 2A. As shown in these figures, a plurality of substantially rectangular notches 14c are formed in the passage-side fence 14 at predetermined intervals. Also, 17 is attached to the passage side fence 14 as shown in FIG.
(A) Suspension rods (suspension pillars) attached to divide the notch 14c on the middle left side, and a check plate (supporting pillar) 18 attached to the upper end side surface of the passage side fence 14;
The cabinet formed by 8 and the passage-side fence 14 is set at 45 degrees.

Next, FIG. 3 (a) is a front view showing the structure of the container side fence 15, and FIG. 3 (b) is a cross-sectional view taken along the line CC 'of FIG. 3 (a). On the container side fence 15,
Notch 15c having the same shape as notch 14c (see FIG. 2A)
Are formed at equal intervals. Further, a plate-shaped suspension member 20 (suspension plate) is fixed to the container side fence 15 so as to protrude from the notch 15c on the left side in FIG. 21 is a check plate (supported) attached to the upper side of the container side fence 15.
The angle between the check plate 21 and the container side fence 15 is set to 45 degrees. The check plate 21 is formed slightly longer than the check plate 18.

Referring to FIG. 4, a description will be given of a configuration of a reverse movement preventing fence in which the above-described fences 14 and 15 are arranged close to each other.
FIG. 4 is a view showing the configuration of the back-up preventing fence in a closed state. As shown in this figure, the passage-side fence 14 includes a pin 14a.
Is rotated in the directions E and F with the rotation axis as a rotation axis. The container side fence 15 rotates in the G and H directions around the pin 15a as a rotation axis.

As shown in FIG. 4, in the initial state, in the passage side fence 14 and the container side fence 15, the distal end face 18a of the check plate 18 and the distal end side face 21a of the check plate 21 face each other at a small interval. Are arranged as follows. At this time, the suspending rod 17 is located near the notch 20a of the suspending tool 20 and has a small distance (hereinafter, distance D) from the suspending tool 20 in the rotation direction of the passage side fence 14.
1).

The distance D1 is such that when the passage-side fence 14 rotates in the direction E, the check plate 18 makes a check with the tip surface 18a before the stop 20 and the stop rod 17 contact. It is set so as to rotate to a position where the front end side surface 21a of the plate 21 does not face. The sliding portion 20b of the suspending tool 20 is provided with the suspending rod 17 and the suspending tool 20 when the mouse entering from the passage 1 rotates the fences 14 and 15 in the E and H directions. Is formed to a length that does not cause the engagement of. The lower surface 20d of the sliding portion 20b protrudes in a bow shape. further,
A substantially hook-shaped drop-off prevention portion 20e is formed at the tip of the sliding portion 20b, so that the engagement between the suspension bar 17 and the suspension member 20 does not come off.

Here, the vicinity of the notch 20a is enlarged in FIG.
As shown in FIG. In FIG. 5, α indicates that the passage-side fence 14 is the pin 1
Outer peripheral trajectory of the suspension rod 17 when rotating around the center 4a,
β is the inner circumference locus. As shown in FIG. 5, in the initial state (closed state), the lower end of the suspending portion 20c of the suspending tool 20 is set to be on the inner peripheral side with respect to the inner peripheral locus β. That is, the passage-side fence 14 is rotatable in the F direction without contacting the suspension member 20.

Further, as shown in FIG. 5, the passage side fence 14 of the sliding portion 20b of the suspending member 20 rotates in the direction E, and the suspending rod 17 contacts the lower surface 20d of the sliding portion 20b. In this case, the distance between the contact point ap1 and the outer trajectory α is set to be larger than the distance between the contact point ap1 and the inner trajectory β, and the passage-side fence 14 is further turned in the E direction. If you move,
The container side fence 15 is formed so as to rotate in the H direction in accordance with the rotation.

Next, the shape of the suspension portion 20c will be described with reference to FIG.
This will be described with reference to FIG. The container side fence 15 (see FIG. 4)
And the lower surface 20d of the sliding portion 20b is
The lower surface 20d of the sliding portion 20b is formed so that the contact point ap2 is closer to the passage 1 than the plane ε passing through the rotation axis of the passage side fence 14 and the axis of the suspension rod 17 when the contact point ap2 comes into contact with the sliding contact 20a. Is done. When the suspension 20 is further rotated in the G direction, the suspension rod 17
Rotates in the F direction between the outer trajectory α and the inner trajectory β, and at the same time, slides on the lower surface 20 d of the sliding portion 20 b to form the suspension surface 2.
Each part is formed such that the angle δ of the suspension surface direction K with respect to the movement direction J of the suspension rod 17 becomes negative at this contact point ap3.

In such a configuration, first, the process in which a rat having a habit of pushing the fence passes through the back-stopping fence from the passage 1 to the container 3 will be described with reference to FIGS.
First, in FIG. 1, the rat tries to approach the inducer installed in the capture container 3, passes through the passage 1, and reaches the retrograde prevention unit 2. Here, as shown in FIG. 7A, when the rat presses its own head against the passage-side fence 14, the suspending rod 17 does not contact the suspending portion 20c of the suspending tool 20.
The passage-side fence 14 rotates independently in the F direction. When the lower end 14b of the passage-side fence 14 contacts the container-side fence 15, the container-side fence 15 also rotates in the G direction. As a result, the rat enters the capture container 3 via a gap between the lower ends 14b and 15b of the fences 14 and 15 and the outer shell 4 of the reverse movement prevention unit 2.

As shown in FIG. 7 (b), when a rat having a habit of pulling the fence toward the user pulls his forelimb on the fence unit 14 and turns the passage-side fence 14 in the E direction, the passage-side fence 1
4 is rotated in the direction E by a distance D1 (see FIG. 5), and at the contact point ap1, the suspension member 20 is rotated.
Abuts on the sliding portion 20b. Along with this, the check plate 18 also rotates in the direction E, so that the tip surface 18a of the check plate 18 (see FIG. 4) and the tip side surface 21a of the check plate 21 (see FIG. 4) no longer face each other. Therefore, the rat can further rotate the passage-side fence 14.

When the rat further rotates the passage-side fence 14 in the direction E, as shown in FIG. 5, the suspension rod 17 rotates between the outer trajectory α and the inner trajectory β in the E direction.
Sliding on the sliding portion 20d, the suspender 20 (container side fence 15)
Is rotated in the H direction. This rotation is performed until a sufficient gap is formed between the lower end 14b of the passage-side fence 14 and the outer shell 4, or until the suspension rod 17 comes into contact with the falling-off preventing portion 20e, and ends.

Here, the rat is the lower end 14 of the passage side fence 14.
The upper body is screwed upright into the gap between b and the shell 4, and enters the catching container 3 using the lower ends 14b and 15b of the passage-side fence 14 and the container-side fence 15 as a foothold. When a rat passes through one of the two processes described above, the passage-side fence 1
4 and the container side fence 15 return to the initial state due to their own weight, and the reverse movement prevention fence is closed.

Next, the process in which the escape of the rat in the container 3 is prevented by the backstop fence will be described with reference to FIG. As shown in FIG. 8 (a), when a rat having a habit of pushing the fence advances from the container 3 to the retrograde prevention unit 2 and pushes the container fence 15 with the head, the container fence 15 slightly moves in the H direction. To rotate. Thereby, the tip side surface 21a (see FIG. 4) of the check plate 21 comes into contact with the tip end surface 18a of the check plate 18 (see FIG. 4). Since the angle formed by the check plates 18 and 21 is 90 degrees, even if the pushing force of the mouse is large, the container side fence 15 does not rotate any more. Therefore, the backstop fence is not opened.

Further, when a rat having a habit of pulling the fence toward the front advances from the container 3 to the retrograde prevention unit 2 and pulls the container-side fence 15 in the G direction with the forelimbs as shown in FIG.
The container side fence 15 slightly rotates in the G direction, and as shown in FIG. 6, the suspending tool 20 and the suspending rod 17 abut on the abutting contact point ap2. Since the contact point ap2 is closer to the passage 1 than the surface ε, the suspending rod 17 is pushed by the suspending tool 20 rotating in the G direction, and the sliding portion 20b is moved in accordance with the amount of rotation of the suspending tool 20. At the same time as sliding upward along the lower surface 20d, it rotates in the F direction between the outer trajectory α and the inner trajectory β.

With this sliding operation, the passage-side fence 14 also slightly rotates in the F direction. This pivoting operation is performed by adjusting the distance γ between the suspension bar 17 and the contact point ap3 (γ is the contact point at two points where the inner circumference trajectory β and the concentric trajectory θ passing through the contact point ap3 intersect with the circumference of the suspension rod 17 The distance until the point ap3 'on the ap3 side abuts on the abutment point ap3) becomes zero, that is, the suspension rod 1
7 is kept in contact with the suspension surface 20f of the suspension portion 20c.

While the gap between the lower ends 14b, 15b of the fences 14, 15 and the outer shell 4 is small, the suspension rod 17 contacts the suspension surface 20f of the suspension portion 20c at the contact point ap3. Here, the suspension surface direction K of the suspension surface 20f is formed such that the angle δ with respect to the movement direction J of the suspension rod 17 at the contact point ap3 becomes negative. Then, as shown in FIG. 8 (b), each of the fences 14 and 15 has a further height because the suspending device 20 is to rotate in the G direction and the suspension bar 17 is to rotate in the F direction. Rotation cannot be continued. Therefore,
Only a small gap is formed between the lower end 14b, 15b of each fence 14, 15 and the outer shell 4. That is, the retrograde fence is not opened.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 9A is a diagram showing a configuration of a retrograde prevention unit 2 using a retrograde prevention fence according to the second embodiment, and FIG. 9B is a partially enlarged view of FIG. 9A. FIG.
The reverse movement prevention unit 2 shown in FIG. 1A is applied to a mouse trap 12 as shown in FIG.

In FIG. 9A, the passage-side fence 24 has substantially the same structure as the fence 14 (see FIG. 2A).
Non-return bars 25 and 26 (support columns) are fixed to the upper end of 4. The passage-side fence 24 is rotatably attached to the outer shell 4 of the reverse prevention unit 2 using a pin 27 integrally formed at an upper end thereof as a rotation axis. The container side fence 29 has substantially the same structure as the fence 24, and the upper end of the fence 29 has check bars 30, 31 ( supported
The supporting column is fixed, and is rotatably attached to the outer shell 4 using a pin 32 integrally formed at the upper end of the fence 29 as a rotation axis.

The interval between the fences 24 and 29 is set shorter than the length of the body of the mouse to be captured. In addition, the lengths L1 and L2 of the fences 24 and 29 in the direction of the rotation surface are the same, and when the backstop fence is in a closed state (that is, the fences 24 and 29 are stationary in a state perpendicular to the outer shell 4). ), The lower ends 24a, 2 of the fences 24, 29
The positions of the pins 27 and 32 are set so that the distances D2 and D3 between the 9a and the outer shell 4 are the same and sufficiently small.

The check bar 25, the check bar 26, the check bar 3
0 and the non-return bar 31 are fixed to the fences 24 and 29 so that the angle between them and each other is 90 degrees. Check rod 3
The length of 0, 31 is longer than the check rods 25, 26 by a predetermined distance, and when the anti-retro fence is in the closed state, FIG.
As shown in (b), the tip surface 25 of the check rods 25, 26
The most protruding central portions of the check bars 30 and 31
Are set so as to abut on the tip side surfaces 30a and 31a of the front end. In this case, the angle between the check bar 25 and the check bar 30 and the angle between the check bar 26 and the check bar 31 are set to 90 degrees. The positions at which the pins 27 and 32 are pivotally supported, the size of each component, and the like are set so that the tip of the check bar 30 does not contact the outer shell 4 when the container-side fence 29 rotates.

With reference to FIG. 9 (a), a description will be given of a process in which a rat tries to pass through the retrograde fence in such a configuration. First, when a rat traveling in the H direction from the passage 1 side pushes the passage side fence 24 with its head or pulls it with its forelimbs to rotate, the fence 24 rotates in the N direction. Thereby, the check bar 25, the check bar 30, and the check bar 26
Is disengaged from the check bar 31. Here, the rat allows the upper body to enter the container 3 through the gap between the lower end 24a of the passage-side fence 24 and the outer shell 4.

Since the distance between the fences 24 and 29 is shorter than the body length of the rat, when the rat's head reaches the container side fence 29, the lower body is placed between the lower end 24b of the passage side fence 24 and the outer shell 4. It is sandwiched. That is, while the non-return rods 25 and 26 and the non-return rods 30 and 31 are disengaged, the mouse rotates the container side fence 29 in the M direction. Thereby, the rat enters the container 3 through the gap between the lower end 29a of the container side fence 29 and the outer shell 4. Thus, when the rat passes toward the container 3, the fences 24 and 29 rotate by their own weight and return to the initial state (closed state).

Conversely, when a rat that advances in the J direction from the container 3 recognizes the back-stopping fence, the mouse pushes the container-side fence 29 with its head or pulls it with its forelimbs. However, the tip surface of the check bar 25 or the check bar 26 is in vertical contact with the tip side surface of the check bar 30 or the check bar 31, and FIG.
As shown in the partially enlarged view of (b), the direction of the force applied to the check bar 25 or the check bar 26 is the axis of the check bar 25 or the check bar 26 (passes through the axis of the pin 27). Matches. Therefore, no moment is generated to rotate the check bar 25 or the check bar 26. That is, the passage-side fence 24
In addition, the container side fence 29 does not rotate, and a rat that proceeds in the J direction from the container 3 side cannot pass through the retrograde prevention fence.

As described above, the first and second embodiments of the present invention
According to the anti-retro fence according to the embodiment of the present invention, a rat entering from the side of the passage 1 can pass through the fence provided not only when pushing the fence provided on the side of the passage 1 but also when pulling it. It is possible to prevent a mouse from escaping from the container 3 side from escaping by pushing or pulling a fence provided on the container 3 side. Therefore, a rat trying to pass through the retrograde fence aiming at the inducer installed in the capturing container 3 can easily enter the capturing container 3 and completely prevent escape of the captured mouse, so that there is a high probability. Rats can be captured.

Further, since each of the above-described back-up prevention fences does not use electric parts such as sensors and power supply devices, it can be constructed simply and inexpensively, and can obtain high durability even when installed on an attic where there is much dust. Can be. Furthermore, since it is configured without using a component easily deteriorated by moisture in the air, such as rubber or a spring, it is suitable for installation in a humid kitchen or the like.

In the above-described first and second embodiments, an example in which the present invention is applied to the mouse capturing device 12 has been described. However, the present invention may be used for capturing and controlling passage of animals other than the mouse. Also,
As long as each component has a predetermined rigidity, it may be formed from a material other than metal. In the closed state,
A weight may be attached to a predetermined position on each of the fences 14, 15, 24, 29 so that each of the fences 14, 15, 24, 29 is perpendicular to each surface of the outer shell 4. Thereby, each fence 14, 15, 24, 29 can be easily manufactured.

[0038]

As described above, according to the present invention,
The first fence pivots in response to the animal's movement when its lower part is pushed or pulled by an animal traveling through the passage. Then, a predetermined gap is formed between the lower end of the first fence and the passage, and the animal passes through the gap. And the second
The animal's fence pivots when its lower part is pushed or pulled. Then, a predetermined gap is formed between the lower end of the second fence and the passage, and the animal passes through the gap. Also,
If the first fence is stationary, the second fence is
And supported columns, or suspension columns and plates
Due to the rotation being prevented , the lower part of the second fence is not sufficiently rotated even if the lower part of the second fence is pushed or pulled by an animal reversing the passage. That is, there is an effect that the possibility of capturing an animal can be improved and an animal trying to escape can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a mouse capturing device 12 using a retrograde fence according to a first embodiment of the present invention.

FIG. 2 is a view showing a configuration of a passage-side fence 14 of the back-up prevention fence according to the embodiment.

FIG. 3 is a diagram showing a configuration of a container-side fence 15 of the back-up prevention fence according to the embodiment.

FIG. 4 is a partial cross-sectional view showing a configuration of a back-stop preventing fence according to the embodiment.

FIG. 5 is a partial cross-sectional view showing, on an enlarged scale, a part of the configuration of the reverse movement preventing fence according to the embodiment.

FIG. 6 is an enlarged partial cross-sectional view showing a part of the configuration of a reverse movement preventing fence according to the embodiment.

FIG. 7 is a diagram for explaining a process in which a mouse passes through a retrograde fence.

FIG. 8 is a view for explaining a process in which a retrograde fence prevents the retrograde movement of a mouse.

FIG. 9 is a view showing a configuration of a back-up prevention fence according to a second embodiment of the present invention.

FIG. 10 is a diagram showing a schematic configuration example of a mouse capturing device.

FIG. 11 is a view showing an example of the configuration of a conventional reverse movement prevention fence 5;

FIG. 12 is a view showing a structure of a passage-side fence 8 and a container-side fence 10 of a conventional back-up prevention fence 5;

[Explanation of symbols]

14, 24 Passage-side fence (first fence) 15, 29 Container-side fence (second fence) 17 Suspension rod ( suspension pole ) 18 Check plate ( supporting column ) 21 Check plate ( supported column) 20 Hook ( suspension plate ) 25, 26 Check bar ( supporting column ) 30, 31 Check bar (supported column)

Claims (2)

(57) [Claims] 1. A first fence pivotally supported on the upper side walls of a passage on which an animal travels, and a first fence following the first fence and a predetermined distance from the first fence on the upper side walls. A second fence that is pivotally supported, and a pillar that is attached to the first fence and that rotates together with the first fence, the axis of which is orthogonal to the first fence rotation axis. A pillar, which is attached to the second fence and rotates with the second fence, the rotation surface of which is on the same plane as the rotation surface of the support pillar, and the axis of which is When the first and second fences are at right angles to the second fence rotation axis,
A supported column orthogonal to an axis extension line of the support column, a suspension column attached below the first rail rotation axis in parallel with the rotation axis, and a support column below the second rail rotation axis. A plate attached to the first fence, wherein the lower flap is provided at a position where the second fence abuts on the suspension pillar when the second fence pivots away from the first fence. A suspension plate formed with a notch having a shape for locking a movement of the suspension column in a direction away from the first barrier of the second barrier at a predetermined position, wherein the first barrier is When stationary, the support pillar and the supported pillar, or the suspension pillar and the notch peripheral edge abut at a predetermined position to prevent rotation of the second fence, When the fence is rotating, the contact at the predetermined position is not performed, and the fence is prevented from moving backward. 2. A shaft support is provided at the upper part of both side walls of the passage where the animal travels
A first fence, which follows the first fence, and is separated from the first fence by a predetermined distance.
A second fence pivotally supported on the upper portions of the side walls, and a second fence attached to the first fence and rotating together with the first fence.
Moving two support columns, the axis of each support column being the first
Each support column is orthogonal to the fence rotation axis and the second fence
In the direction of the first fence and the second shaft
Upward and downward on the reference plane including the pivot axis of the fence
A support means arranged to be extended and extended; and being attached to the second fence and rotating together with the second fence.
Moving two supported columns, each supported column having the axis
2 and each supported column is
The direction to the fence 1 above and below and above the reference plane
Supported means arranged to extend toward the first and second fences.ofWhen both are stationary
The front of the supported column located above the reference plane.
The relationship that the support column above the reference plane is almost perpendicular
And supported below the reference plane.
The support column located below the reference plane is almost perpendicular to the column.
Has a relationship that is a line,The case where the first fence is stationary and the second fence is
When the fence is not allowed to rotate at all, the two supported columns are
Each support column is set to abut vertically
When the second fence is not allowed to rotate more than a certain amount To
Of the two supported columnsAnyOne is at the tip of the support post
Abut verticallyIs set to  When the first fence is rotating, the contact is performed.
Absent That The feature is a flap preventing fence.