JP7194478B1 - bird intrusion prevention device - Google Patents

Abstract

An object of the present invention is to provide a bird intrusion prevention device capable of winding up a net without collapsing. A winding body 3 is provided rotatably around a horizontal axis 3J, and an upper edge 4J is attached to the winding body 3, and a bird-proof area RY is formed in a state in which the winding body 3 hangs flatly under its own weight. A net body 4 and a winding body manipulating part 5 for rotating the winding body 3 around an axis 3J to wind the net body 4 on the winding body 3 are provided. At least a part of each of the two side edges 4E that face each other in the width direction of the net 4 forms an inclined portion 4Sa that extends at an angle so as to widen toward the lower edge 4K of the net 4. As shown in FIG. [Selection drawing] Fig. 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bird intrusion prevention device for preventing bird intrusion in gardens, condominium balconies, and the like.

2. Description of the Related Art Conventionally, there has been known a bird intrusion prevention device for preventing birds such as pigeons from intruding into vegetable gardens, verandas of condominiums, and the like. Among such bird intrusion prevention devices, there is one in which the upper edge of a rectangular net body is attached to a winding body, and the net body can be wound up by rotating the winding body. known (for example, Patent Document 1 below).

JP-A-2002-233292

In such a bird intrusion prevention device, as the winding body winds up the net body, each longitudinal member (wire rod extending in the longitudinal direction) of the net body overlaps itself one turn at a time. However, if the balance at the time of winding is lost and some of the vertical members shift in the horizontal direction (shift laterally), the entire net body collapses laterally (becomes an oblique column) and is wound around the winding body. being taken away. Since the wound body in a laterally collapsed state extends in the width direction (the axial direction of the wound body), it may be caught by another member (such as a frame that supports the wound body) before it is completely wound up by the wound body. You may get caught.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a bird-intrusion prevention device capable of winding up a net without collapsing.

The bird-intrusion prevention device of the present invention comprises a winding body rotatable about a horizontal axis, and an upper edge attached to the winding body to form a bird-proof area in a state of hanging down in a plane by its own weight. and a winding body manipulating part that rotates the winding body about the axis and winds the net body on the winding body, and is provided with two parts facing each other in the width direction of the net body. At least part of each of the side edges forms an inclined portion extending at an angle so as to widen toward the lower edge side of the net body.

ADVANTAGE OF THE INVENTION According to this invention, a net can be wound up in the state which does not collapse laterally.

(a) and (b) are perspective views showing a state in which the net body of the bird intrusion prevention device according to the embodiment of the present invention is lowered. FIG. 2 is a front view showing a state in which the net body of the bird intrusion prevention device according to the embodiment of the present invention is lowered; FIG. 2 is a diagram showing an example of a configuration of a winding body operating section provided in a bird intrusion prevention device according to an embodiment of the present invention; FIG. 2 is a front view showing a state in which the net body of the bird intrusion prevention device according to the embodiment of the present invention is being wound up; FIG. 2 is a front view showing a state in which the net body of the bird intrusion prevention device according to the embodiment of the present invention has been wound up; (a) and (b) diagrams showing a usage example of a bird intrusion prevention device according to an embodiment of the present invention. A front view of a bird intrusion prevention device showing a modification of one embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1(a), (b), FIG. 2 and FIG. 3 show a bird intrusion prevention device 1 according to one embodiment of the present invention. A bird intrusion prevention device 1 includes a frame 2 , a winding body 3 , a net body 4 and a winding body operating portion 5 .

The frame 2 has a pair of vertical portions 11 extending upward when placed on a horizontal surface (ground, floor surface, etc.), and a horizontal portion 12 extending so as to connect the upper ends of the pair of vertical portions 11. The entire structure is gate-shaped. A horizontally extending leg portion 11S is provided at the lower end of the vertical portion 11 so that the frame 2 can be installed independently on the ground or floor surface. That is, in this embodiment, the frame 2 is a self-supporting portal frame.

Both ends of the winding body 3 are supported by upper end portions of a pair of vertical portions 11 of the frame 2, and are rotatable about a horizontal axis 3J. The outer peripheral surface of the wound body 3 is provided with a plurality of protrusions 3T as protrusions having a shape that protrudes outward. The plurality of projections 3T are arranged in a line along the axis 3J of the winding body 3 regularly or irregularly.

The net body 4 has an upper edge 4J attached to the winding body 3. - 特許庁As shown in FIG. 1, the net body 4 forms a bird-proof area RY between itself and the frame 2 in a state in which it hangs flat under its own weight. Here, the term "bird-proof area" refers to an area that can prevent birds from entering.

As shown in FIG. 2, a part of two side edges 4E facing each other in the width direction of the net body 4 (lateral direction, which is the axial direction of the winding body 3) widens toward the lower edge 4K. It has two inclined portions 4Sa that extend in an inclined manner. Therefore, when the net body 4 hangs down in a flat shape due to its own weight, a downwardly widening portion SK is formed in the middle portion of the net body 4 in the vertical direction (FIG. 2). In addition, the vertical members (wires extending in the vertical direction) forming the two side edges 4E and the horizontal members (wires extending in the horizontal direction) forming the lower edge 4K are different from each other in terms of wear resistance. It is formed (or protected by cloth material) thicker than the members and cross members.

A portion of the two side edges 4E has a drooping portion 4Sb that hangs down from the lower end portion of the inclined portion 4Sa while the two side edges 4E are kept parallel. The clearance between the hanging portion 4Sb and the vertical portion 11 of the frame 2 is about 5 cm at most. In the present embodiment, the hanging portion 4Sb, which is a wire rod, is thicker than the inclined portion 4Sa, which is also a wire rod.

In FIGS. 1A and 2, the mesh body 4, which hangs flat under its own weight, has a side edge 4E (a portion corresponding to the hanging portion 4Sb) of the lower edge 4K of the frame 2 held by a retainer 20. It is held connected to the vertical portion 11 . A string, a metal fitting, or the like can be used for the holder 20 . As a result, the original bird-proof area RY obtained by the size and shape of the net body 4 can be secured in the lower part of the frame 2 . Since birds such as pigeons cannot move through the bird-proof area RY, it is possible to prevent birds from entering (mainly by walking) inside a net house or the like, which will be described later.

In FIG. 3, the winding body operating portion 5 is composed of a crank lever detachably connected (fitted) to a lever mounting projection 3L formed at one end of the winding body 3. As shown in FIG. By rotating the winding body operation portion 5 about the axis 3J of the winding body 3, the winding body 3 can be rotated about the axis 3J.

When the winding body 3 is rotated by the operation of the winding body operation unit 5, the net body 4 in a flat hanging state is wound up (rolled up) by the winding body 3 from the upper edge 4J side (Fig. 2→FIG. 4→FIG. 5). When the winding body 3 finishes winding the net body 4, the net body 4 is wound around the winding body 3 in a roll shape and is stored (FIGS. 1(b) and 5). On the other hand, when the net body 4 wound by the winding body 3 is to be lowered, the winding body 3 is rotated in the opposite direction to the winding of the net body 4 by operating the winding body operation part 5, The net body 4 is drawn out downward by its own weight.

Here, when the winding body 3 is rotated in the winding direction of the net body 4, the two inclined portions 4Sa of the net body 4 are symmetrically moved in opposite directions (axial direction) by the winding body 3. (towards the outside of the tape) is spirally wound (Fig. 2 → Fig. 4 → Fig. 5). Since the two inclined portions 4Sa are spirally wound by the winding body 3 without trying to overlap each turn, lateral slippage itself does not occur. Further, for this reason, other longitudinal members located between the two inclined portions 4Sa do not shift laterally, and as a result, the net body 4 is wound onto the winding body 3 without collapsing laterally.

Since the mesh body 4 does not collapse laterally, it is wound up by the winding body 3 while maintaining a substantially straight columnar cylindrical shape (FIG. 5). Therefore, the side edge 4E of the net body 4 does not get caught on another member (here, for example, the vertical portion 11 of the frame 2) before the winding is completed, and the winding body 3 winds the net body 4. It can be wound up to the end (to the vicinity of the lower edge 4K).

Here, while the net body 4 is being wound by the winding body 3, each vertical member including the two side edges 4E is adjacent to each other among the plurality of projections 3T provided on the outer peripheral surface of the winding body 3. get between things. Of these, the vertical member of the inclined portion 4Sa, which is a part of the side edge 4E formed to be thicker, does not largely shift laterally from the portion (between the two protrusions 3T) wound on the winding body 3. , the net body 4 can be wound up without collapsing on the side.

6(a) and 6(b) show a specific usage example of the bird entry prevention device 1 in this embodiment. In FIGS. 6(a) and 6(b), the bird entry prevention device 1 is used as an entrance for a cover 30 provided to cover a certain space. Here, it is assumed that the cover 30 is a net house formed by covering a free-standing frame 31 with a net 32, and that there is a vegetable garden in the space covered by the cover 30. FIG.

In this example, the cover 30 has an entrance opening 33 on one side (FIG. 6(b)), and the bird entry prevention device 1 is installed in the entrance opening 33. As shown in FIG. In this case, the bird-intrusion prevention device 1 has a bird-proof function for preventing birds from entering the vegetable garden and a function as an entrance for people entering and exiting the vegetable garden. In this respect, it is different from a use example that does not have a function as a doorway (or does not place importance on the function), such as a bird intrusion prevention device installed on a veranda of an apartment building.

When using the bird-intrusion prevention device 1 of the present embodiment in such a configuration, the bird-intrusion prevention device 1 is provided with the self-supporting gate-shaped frame 2, so that the installation work on the cover 30 is easy. . In addition, since the removal work from the cover body 30 is also easy, maintenance is easy. Although the cover 30 is a net house here, the cover 30 may be a vinyl house or the like. Of course, it is also possible to install it on the veranda of an apartment building and use it exclusively for preventing birds from entering.

As described above, in the bird intrusion prevention device 1 according to the present embodiment, a part of each of the two side edges 4E of the net 4 is inclined so as to widen toward the lower edge 4K of the net 4 . When the winding body 3 is rotated, the two inclined parts 4Sa are spirally wound by the winding body 3 in opposite directions. Therefore, the two inclined portions 4Sa do not shift laterally, and the entire net body 4 can be wound up without collapsing laterally. Therefore, the side edge 4E of the net body 4 is not caught by other members before winding is completed, and the net body 4 can be wound up to the end.

Although the embodiments of the present invention have been described so far, the present invention is not limited to those described above, and various modifications and the like are possible. For example, in the above-described embodiment, the lower ends of the two inclined portions 4Sa facing each other in the width direction of the net 4 are located at intermediate portions of the two side edges 4E (intermediate portions between the upper edge 4J and the lower edge 4K of the net 4). ), the lower end of the inclined portion 4Sa may coincide with the lower edge 4K of the net body 4. FIG. That is, at least a portion of each of the two side edges 4E of the net body 4 that face each other in the width direction forms an inclined portion 4Sa extending at an angle so as to widen toward the lower edge 4K side of the net body 4. All you have to do is

Further, the outwardly projecting portion provided on the outer peripheral surface of the winding body 3 is not limited to the projection 3T shown in the above-described embodiment, and may extend in the direction in which the axis 3J of the winding body 3 extends. It may also be a helical portion extending helically along (like a thread on a screw). Further, although the winding body operation unit 5 is a manual crank lever detachably attached to the winding body 3 in the above embodiment, the crank lever is fixed to the winding body 3. may Moreover, the winding body operation unit 5 is not limited to a manual drive type such as a crank lever, and may be an electric (automatic) type using a motor or the like.

FIG. 7 shows a modification of the bird intrusion prevention device installed on the veranda of the condominium. The same reference numerals are given to the same members as those of the bird-instrument prevention device according to the present embodiment which has already been described, and the description thereof will be omitted. A bird entry prevention device 100 shown in FIG. 7 differs from the bird entry prevention device 1 in that the frame 2 is not provided. The winding body 3 is housed in a box-shaped case 101 and connected to a motor 102 as a drive source. By operating a switch (not shown) to drive the motor 102, the winding body 3 rotates in the normal direction or in the direction opposite to the normal direction. As a result, the net body 4 is wound around the winding body 3 or unwound from the winding body 3 . In a modified example, a switch (not shown) and the motor 102 function as a winding body operation unit.

The case 101 is fixed to the ceiling 104 which is the structure of the condominium via brackets 103 . The lower end side of the net body 4 is fixed to, for example, a fence 105 that is a structure of an apartment building via a holder 20 .

To provide a bird intrusion prevention device capable of winding up a net without collapsing.

1 Bird Intrusion Prevention Device 2 Frame 3 Winding Body 3J Axis Line 3T Projection (Protrusion)
3L Lever mounting protrusion 4 Mesh body 4J Upper edge 4K Lower edge 4E Side edge 4Sa Inclined part 5 Winding body operating part 11 Vertical part 11S Leg part 12 Horizontal part 20 Holder 30 Cover 31 Self-supporting frame 32 Net 33 Entrance opening RY Anti-bird area

Claims (3)

a winding body rotatably provided around a horizontal axis;
a net body having an upper edge attached to the winding body and forming a bird-proof area in a state of hanging down in a plane by its own weight;
a winding body operation unit that rotates the winding body around the axis and causes the winding body to wind the net body,
A bird invasion prevention device, wherein at least a part of each of two side edges facing in the width direction of the net is formed as an inclined portion extending at an angle so as to widen toward the lower edge side of the net. . The two side edges of the net body have hanging portions hanging from the lower ends of the inclined portions while the two side edges are kept parallel,
The side edge is a wire,
2. A bird entry prevention device according to claim 1, wherein said hanging portion is thicker than said inclined portion. 3. A bird entry prevention device according to claim 1 or 2, wherein an outer peripheral surface of said winding body is provided with an outwardly protruding protrusion.

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