JP7171038B2 - Bird damage prevention tool - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a bird damage prevention tool used by being attached to a repellent line arranged along an overhead line.

A repellent wire for bird damage prevention is sometimes hung above the overhead wire. A bird damage prevention device can be attached to the avoidance line to make it more difficult for birds to perch. Patent Literature 1 below proposes a bird damage preventive tool (obstructing member) that can be attached to a repelling line, and that has a needle projecting from the obstructing member to improve bird damage prevention performance. there is

JP-A-03-118711

The above-described bird damage prevention device of Patent Document 1 has a problem that the thin needles protruding from the baffle member are easily damaged.
An object of the present disclosure is to propose a bird damage preventive tool capable of achieving both bird damage preventive properties and durability.

One aspect of the present disclosure is a bird damage prevention tool used by being attached to a repellent line arranged along an overhead line, comprising a first member and a tubular second member. The first member is formed with a first through hole through which the avoidance line can be inserted. The second member is formed with a second through hole through which the avoidance wire can be inserted. The outer edge shape of the cross section of the first member defined by a plane orthogonal to the central axis of the first through hole includes the outer edge shape of the cross section of the second member defined by a plane orthogonal to the central axis of the second through hole, and The area is wider than the outer edge shape of the cross section of the second member.

With such a configuration, the first member and the second member are rotatable around the repelling line, and a difference in height is generated between the first member and the second member. Stopping on the avoidance line can be highly suppressed by grabbing with the foot. In addition, the first member has a shape that protrudes outward from the second member, but since the first member includes the second member and has a wider cross-sectional shape than the second member, it is sufficiently Since the strength of the first member is increased, it is possible to suppress breakage of the first member.

The first member and the second member described above may be configured integrally so that the first through hole and the second through hole communicate with each other. With such a configuration, it is possible to provide the first member with good rotational performance on the avoidance line by the cylindrical body of the second member, and reduce the number of parts to prevent bird damage. It is possible to simplify work such as attachment to the device.

Further, in the case where the first member and the second member are integrally configured as described above, the bird damage prevention device may have one or two of the first member and the second member. As the number of integrated first and second members of the bird damage prevention tool increases, the possibility that one of the members will clog the repellent line increases. Here, clogging means that it becomes impossible to rotate with respect to the avoidance line for some reason such as being caught. If any member is clogged, the influence of the clogging affects the entire bird damage prevention device, and there is a possibility that the rotation with respect to the repelling line may be hindered in a wide range. However, if the number of the first member and the second member is one or two as described above, the number of the first member and the second member becomes too large, which hinders smooth rotation. can be suppressed.

The first member described above may include at least one protrusion extending away from the first through hole. With such a configuration, the protruding portion makes it difficult for a bird to grasp the first member with its leg, so that bird damage prevention can be improved.

The length of the first member in the lengthwise direction of the first through hole may be shorter than the length of the second member in the lengthwise direction of the second through hole. With such a configuration, since the area of the portion of the first member that contacts the avoidance line is small, the frictional force between the first member and the avoidance line can be reduced. Furthermore, the inclination of the first member with respect to the avoidance line can be suppressed by the contact of the first member with the second member, and as a result, bird damage prevention can be improved.

A cross-section of a first tip portion protruding in the axial direction at least one of the axial ends of the first through hole in the first member, the cross section taken along a plane normal to the axial direction of the first through hole may be provided with a first tip portion formed so that the area of is smaller toward the tip side. Further, a second tip portion projecting in the axial direction at least one of the axial ends of the second through hole in the second member described above, the second tip portion having a tip portion thinner than the surroundings. may be provided. With such a configuration, the bird damage preventive device contacts the adjacent bird damage preventive device at the first end portion or the second end portion. Since these tip parts have a small cross-sectional area at the tip, the contact area with the adjacent bird damage prevention device is small, so the frictional force generated at the contact part during rotation can be reduced, and the rotation performance of the bird damage prevention device can be improved. can be improved.

At least a part of the surfaces constituting the first through hole and the second through hole may be provided with a protrusion projecting toward the center of the hole. With such a configuration, since the repellent line arranged inside the through-hole and the projection come into contact with each other, the contact area is reduced, so that the frictional force can be reduced and the rotation performance of the bird damage prevention tool can be improved. can.

The first member described above may be configured such that the center of gravity is positioned at the first through hole portion. Furthermore, the second member may be configured such that the center of gravity is positioned at the second through hole portion. With such a configuration, the first member and the second member rotate smoothly around the avoidance line, so that birds are less likely to perch on the first member and the second member, and bird damage prevention is improved. can be done.

FIG. 1A is a front view of the bird damage prevention device of the embodiment, and FIG. 1B is a side view of the bird damage prevention device. It is a perspective view which shows the state which attached the bird damage prevention tool of embodiment to the avoidance line. 3A and 3B are side views of a modified bird damage prevention device. It is a side view of the bird damage prevention tool of a modification. 5A and 5B are side views of a modified bird damage prevention device. It is a side view of the bird damage prevention tool of a modification. It is a front view of the bird damage prevention tool of a modification.

Embodiments of the present disclosure will be described below with reference to the drawings.
[1. embodiment]
[1-1. overall structure]
The bird damage prevention device 1 shown in FIGS. 1A-1B is used by being attached to a repellent line 7 arranged along an overhead line. The avoidance line here is a line for bird damage prevention provided along the overhead wire above the overhead wire.

The bird damage prevention tool 1 includes a first member 11 and a second member 12 . In this embodiment, the first member 11 and the second member 12 are constructed integrally.
The first member 11 includes an overhang portion 21 , a plurality of (eight in this embodiment) projecting portions 22 , and a first through hole 23 . The projecting portion 21 is a flange-like portion that spreads around the first through hole 23 . The first through hole 23 is formed to have a size that allows the avoidance wire 7 to be inserted therein.

The projecting portion 22 is provided on the outer edge of the projecting portion 21 and extends in a direction away from the first through hole 23 . The protruding portion 22 is formed to be thinner toward the tip, and the root portion is arranged without any gap between adjacent protruding portions 22 . To confirm, the projecting portion 21 and the protruding portion 22 are different regions when the first member 11 is viewed from the front as shown in FIG. 1A.

The second member 12 has a tubular portion 31 . The tubular portion 31 is formed with a second through hole 32 through which the avoidance wire 7 can be inserted. The second member 12 is arranged side by side in the longitudinal direction of the first member 11 and the avoidance line 7, so that the first through hole 23 and the second through hole 32 communicate with each other. The inner diameters of the first through hole 23 and the second through hole 32 are the same, and as shown in FIG. 1B, the first through hole 23 and the second through hole 32 are connected as one through hole. Hereinafter, the length direction of the first through-hole 23 and the second through-hole 32 (the direction in which the central axis extends) is simply referred to as the axial direction.

As shown in FIG. 1A, when the bird damage prevention device 1 is viewed from the front, the outer edge of the projecting portion 21 is sized to include the outer edge of the tubular portion 31 . Furthermore, the outer edge shape of the cross section of the first member 11 on a plane orthogonal to the central axis of the first through hole 23, that is, the shape connecting the outer edges of the plurality of projecting portions 22, coincides with the central axis of the second through hole 32. The outer edge shape of the cross section of the second member 12 by a plane orthogonal to each other is included inside, and the area is wider than the outer edge shape of the cross section of the second member 12 .

Further, as shown in FIG. 1A , the first member 11 is vertically and horizontally symmetrical, and is configured such that the center of gravity is located on the central axis of the first through hole 23 . The second member 12 has a circular cross section and is configured such that the center of gravity is located on the central axis of the second through hole 32 .

As shown in FIG. 1B, when viewing the bird damage prevention device 1 from the side, the length of the first member 11 in the axial direction is smaller than the length of the second member 12 in the axial direction. Thus, the first member 11 is a plate-like member and is formed with a small thickness in the axial direction. Also, the second member 12 has a length along the axial direction, but does not have a portion that protrudes greatly outward.

[1-2. Example of use of bird damage prevention tool]
FIG. 2 shows a usage example of the bird damage prevention tool 1. As shown in FIG. The avoidance wire 7 is stretched in parallel with the overhead wire 3 at a certain distance from the overhead wire 3 by the escape wire holder 5. - 特許庁FIG. 2 illustrates a state in which the bird damage prevention device 1 is attached to the entire avoidance line 7, but a smaller number of bird damage prevention devices 1 are arranged on the avoidance line 7, and the bird damage prevention device 1 is larger than that in FIG. The line 7 may be exposed.

[1-3. effect]
According to the embodiment detailed above, the following effects are obtained.
(1a) Since the bird damage prevention device 1 forms a height difference between the second member 12 and the first member 11 projecting wider outside than the second member 12, the birds can prevent bird damage. Stopping on the avoidance line 7 by grasping the tool 1 with the foot can be highly suppressed. Since the first member 11 has a cross-sectional shape wider than that of the second member 12, the strength thereof is sufficiently increased, and breakage of the first member 11 can be suppressed.

Further, the first member 11 is provided with a protruding portion 22, and the protruding portion 22 can improve bird damage prevention properties. Since the protruding portion 22 is provided on the outer edge of the protruding portion 21 that protrudes to the outside of the cylindrical portion 31, for example, the protruding portion extends from the outer peripheral surface of the cylindrical portion 31 to the same position as the tip of the protruding portion 22. Higher strength compared to parts. Therefore, breakage of the projecting portion 22 can be suppressed.

Note that in the present embodiment, the outer edge shape of the cross section of the first member 11 taken along a plane perpendicular to the central axis of the first through hole 23 is the cross section of the second member 12 taken along a plane perpendicular to the central axis of the second through hole 32. An example of a configuration that includes the outer edge shape of the However, if the outer edge shape of the cross section of the first member 11 includes most of the outer edge shape of the cross section of the second member 12, the outer edge shape of the cross section of the first member 11 may be different from that of the second member 12 in a small area. It does not have to include the outer edge shape of the cross section. For example, in the first member 11, a narrow slit extending from the outer edge toward the first through hole 23 is formed, so that the outer edge shape of the first member 11 does not completely include the outer edge shape of the second member 12. Even if this is the case, the strength of the first member 11 is not significantly affected, so that the same effects as in the present embodiment can be obtained.

(1b) The bird damage prevention device 1 can realize smooth rotation of the first member 11 along the avoidance line 7 . If only the first member 11 is arranged on the avoidance line 7 , the relatively thin first member 11 is likely to be inclined with respect to the avoidance line 7 , so that the main surface of the first member 11 is placed on the avoidance line 7 . It is difficult to maintain an orthogonal posture. If the first member 11 is inclined with respect to the avoidance line 7, smooth rotation will be hindered. However, in the bird damage prevention tool 1 of the present embodiment, the first member 11 is integrated with the second member 12, and the second member 12 is provided with the cylindrical portion 31, so that it is difficult to incline with respect to the avoidance line 7. Therefore, tilting of the first member 11 is suppressed. Thereby, the first member 11 rotates smoothly together with the second member 12, and bird damage can be suppressed to a high degree. In addition, since the center of gravity of the bird damage prevention device 1 is on the central axis of the first through hole 23 and the second through hole 32, the center of rotation is not eccentric from the avoidance line 7 and can be smoothly rotated.

Moreover, since the bird damage prevention device 1 is composed of one first member 11 and one second member 12, even if the bird damage prevention device were to connect a large number of the first members 11 and the second members, In comparison, clogging with the avoidance line 7 is less likely to occur. Here, clogging means that rotation with respect to the avoidance line 7 becomes impossible due to some reason such as being caught. Further, even if the bird damage preventive device 1 is clogged, it does not easily affect the rotation of the surrounding bird damage preventive device 1 because it is separate from the surrounding bird damage preventive device 1. - 特許庁

In addition, since the first member 11 is formed thinner than the second member 12, an increase in the frictional force between the first member 11 itself and the avoidance line 7 is suppressed. rotation is less likely to be hindered.

[2. Other embodiments]
Although the embodiments of the disclosure have been described above, the present disclosure is by no means limited to the above-described embodiments, and it goes without saying that various forms can be taken as long as they fall within the technical scope of the present disclosure.

(2a) In the above embodiment, the configuration in which the bird damage prevention tool 1 is formed by one first member 11 and one second member 12 is exemplified. However, for example, like the bird damage prevention device 1a shown in FIG. good. Moreover, like the bird damage prevention device 1b shown in FIG. may

It should be noted that the number of the first member and the number of the second member is two or less, so that the deterioration of the rotation performance can be sufficiently suppressed. However, the bird damage prevention device may be integrally configured to include three or more of either or both of the first member and the second member.

(2b) In the above embodiment, the configuration in which the first member 11 and the second member 12 are integrated was exemplified. However, the first member 131 and the second member 132 may be separated from each other as in the bird damage prevention device 1c shown in FIG. The first member 131 has a first through hole 133 and the second member 132 has a second through hole 134 . By arranging the first member 131 and the second member 132 so as to be adjacent to each other on the avoidance line 7, it is possible to achieve the same effect as the bird damage prevention device 1 of the above embodiment.

(2c) In the above-described embodiment, the axial ends of the first member 11 and the second member 12 both have a planar shape along a plane orthogonal to the avoidance line 7 . However, for example, like the bird damage prevention device 1d shown in FIG. 5A, the first member 141 protrudes from the peripheral portion of the first through hole 142 in the axial direction of the first through hole 142, and the tip portion is thinner than the surroundings. It may have a first tip 143 formed therein. Here, "formed thin" means that the area of the cross section of a plane whose normal direction is the axial direction of the first through hole 142 becomes smaller toward the distal end side. In FIG. 5A, the first tip portion 143 is a circular protrusion formed around the first through hole 142, but its specific shape is not particularly limited. It may be provided only partially, and the first tip portion may be one or more protrusions.

In addition, when the first member 141 is a separate member separated from the second member 12, the first distal end portion 143 may be provided on both axial end faces. Further, the first tip portion 143 may be provided at a position other than the peripheral portion of the first through hole 142 as long as it is the axial end portion of the first member 141 .

Further, for example, like a bird damage prevention device 1e shown in FIG. A second distal end 153 may be provided that is thinner. That is, the cross-sectional area of a plane whose normal direction is the axial direction of the second through hole 152 may be configured to be smaller toward the distal end side. When the second member 151 is a separate member separated from the first member 11, the second distal end portions 153 may be provided on both axial end faces. In FIG. 5B, the second tip portion 153 is formed on the entire axial end portion of the second member 151, but it may be formed only on a part of the circumferential direction. There may be more than one protrusion.

By providing the first tip portion 143 or the second tip portion 153 as described above, the contact area with the adjacent bird damage prevention device is reduced, so the frictional force generated at the contact portion during rotation can be reduced, and the bird damage prevention device can be reduced. It is possible to improve the rotatability of the preventers 1d and 1e.

(2d) In the above embodiment, the inner wall surfaces of the first through holes 23 and the second through holes 32 are smooth surfaces. However, like the bird damage prevention device 1f shown in FIG. may have been A projection 166 projecting toward the center of the second through hole 165 may be provided on the inner wall surface of the second through hole 165 of the second member 164 .

With such a configuration, since the repellent wire 7 arranged inside the through-hole contacts with the projections 163 and 166, the frictional force at the contact portion can be reduced, and the rotatability of the bird damage prevention device 1f can be improved. be able to. Note that the protrusions 163 and 166 may be protrusions having a length in the circumferential direction.

(2e) In the above-described embodiment, the first member 11 has the projecting portion 22, but the projecting portion 22 may not be provided. Further, the shape of the projecting portion is not limited to the configuration of the above embodiment. For example, like a bird damage prevention tool 1g shown in FIG.

(2f) In the above embodiment, the configuration in which the second member 12 has the tubular portion 31 is illustrated, but the specific configuration of the tubular portion 31 is not particularly limited. For example, the cylindrical portion 31 may be provided with a projection or the like that protrudes outward. Further, the outer diameter of the tubular portion may be configured to change along the axial direction of the second through hole 32 .

(2g) In the above embodiment, the center of gravity of the first member 11 is located on the central axis of the first through hole 23 and the center of gravity of the second member 12 is located on the central axis of the second through hole 32. exemplified. However, the centers of gravity of the first member 11 and the second member 12 do not have to be at the above positions. If the center of gravity of the first member 11 is located at the first through hole 23, the rotation of the first member 11 can be made smooth. For example, the rotation of the second member 12 can be made smooth.

(2h) Each component of the present disclosure is conceptual and not limited to the above embodiments. For example, the function of one component may be distributed to multiple components, or the functions of multiple components may be integrated into one component. Also, at least part of the configuration of the above embodiment may be replaced with a known configuration having similar functions. Also, at least a part of the configuration of the above embodiment may be added, replaced, etc. with respect to the configuration of the other above embodiment.

DESCRIPTION OF SYMBOLS 1... Bird damage prevention tool, 1a... Bird damage prevention tool, 1b... Bird damage prevention tool, 1c... Bird damage prevention tool, 1d... Bird damage prevention tool, 1e... Bird damage prevention tool, 1f... Bird damage prevention tool, 1g Bird damage prevention tool, 3 overhead wire, 5 evasion wire holder, 7 evasion wire, 11 first member, 12 second member, 21 projecting portion, 22 projecting portion, 23 first penetration Hole 31... Cylindrical portion 32... Second through hole 111... First member 112... Second member 121... First member 122... Second member 131... First member 132... Second member , 133... First through hole 134... Second through hole 141... First member 142... First through hole 143... First tip 151... Second member 152... Second through hole 153... Second tip 161 First member 162 First through hole 163 Protrusion 164 Second member 165 Second through hole 166 Protrusion 171 Protrusion.

Claims (10)

A bird damage prevention device used by being attached to a repelling line arranged along an overhead line,
a first member having a first through hole through which the avoidance line can be inserted;
a cylindrical second member having a second through hole through which the avoidance line can be inserted;
The outer edge shape of the cross section of the first member defined by a plane orthogonal to the central axis of the first through hole includes the outer edge shape of the cross section of the second member defined by a plane orthogonal to the central axis of the second through hole. and the area is wider than the outer edge shape of the cross section of the second member,
The first member and the second member are integrally configured so that the first through hole and the second through hole are in communication,
The bird damage prevention device has one or two of the first member and the second member, and a plurality of the bird damage prevention devices are separately attached to the avoidance line . A bird damage prevention device used by being attached to a repelling line arranged along an overhead line,
a first member having a first through hole through which the avoidance line can be inserted;
a tubular second member having a second through hole through which the avoidance line can be inserted;
A first tip portion projecting in the axial direction of at least one of the axial ends of the first through hole in the first member, the first tip portion being defined by a plane whose normal direction is the axial direction of the first through hole a first tip portion formed so that the area of the cross section becomes smaller toward the tip side;
with
The outer edge shape of the cross section of the first member defined by a plane orthogonal to the central axis of the first through hole includes the outer edge shape of the cross section of the second member defined by a plane orthogonal to the central axis of the second through hole. Further, the second member has a wider area than the outer edge shape of the cross section of the second member. A bird damage prevention device used by being attached to a repelling line arranged along an overhead line,
a first member having a first through hole through which the avoidance line can be inserted;
a tubular second member having a second through hole through which the avoidance line can be inserted;
A second tip portion projecting in the axial direction of at least one of the axial ends of the second through hole in the second member, the second tip portion being defined by a plane normal to the axial direction of the second through hole a second tip portion formed so that the area of the cross section becomes smaller toward the tip side;
with
The outer edge shape of the cross section of the first member defined by a plane orthogonal to the central axis of the first through hole includes the outer edge shape of the cross section of the second member defined by a plane orthogonal to the central axis of the second through hole. Further, the second member has a wider area than the outer edge shape of the cross section of the second member. A bird damage prevention device used by being attached to a repelling line arranged along an overhead line,
a first member having a first through hole through which the avoidance line can be inserted;
a cylindrical second member having a second through hole through which the avoidance line can be inserted;
The outer edge shape of the cross section of the first member defined by a plane orthogonal to the central axis of the first through hole includes the outer edge shape of the cross section of the second member defined by a plane orthogonal to the central axis of the second through hole. and the area is wider than the outer edge shape of the cross section of the second member,
Bird damage , wherein at least a part of the surfaces forming the first through hole and the second through hole is provided with a projection projecting toward the center of the first through hole or the second through hole. protector. The bird damage prevention tool according to any one of claims 2 to 4 ,
The bird damage prevention tool, wherein the first member and the second member are integrally configured so that the first through hole and the second through hole are communicated with each other. The bird damage prevention tool according to claim 5 ,
The bird damage prevention device has one or two of the first member and the second member. The bird damage prevention tool according to claim 6,
A plurality of bird damage preventive devices are separately attached to the avoidance line. The bird damage prevention tool according to any one of claims 1 to 7 ,
A bird damage prevention tool, wherein the first member includes at least one projecting portion extending away from the first through hole. The bird damage prevention tool according to any one of claims 1 to 8 ,
A bird damage prevention tool, wherein the length of the first member in the length direction of the first through hole is smaller than the length of the second member in the length direction of the second through hole. The bird damage prevention tool according to any one of claims 1 to 9 ,
The first member is configured such that the center of gravity is positioned at the first through hole,
The bird damage prevention tool, wherein the second member is configured such that the center of gravity is positioned at the second through hole.

Images