JP7133676B1 - Electric wire stopper and installation method of bird damage prevention tool using it - Google Patents

Abstract

A wire stopper that is useful for fixing a wire attachment device such as a bird damage prevention device that is movably attached to a wire, and a construction method for installing the bird damage prevention device using the wire stopper. A pair of oscillating open/close type gripping members 2 and 3 having a gripping portion 4 for gripping a surface and capable of forming an opening 8 for introducing an electric wire into the gripping portion 4, and a pair of gripping members 2 and 3. A closing urging part 5 for closing and urging to the opening closing position, and a locking part 6 for gripping and fixing the wire gripping position in which the pair of gripping members 2 and 3 are swung toward the closing side from the opening closing position. Wire stopper. [Selection drawing] Fig. 6

Description

TECHNICAL FIELD The present invention relates to a technology for fixing an electric wire attached device such as a bird damage prevention tool that can be movably attached to an electric wire. The present invention relates to a method for installing bird damage prevention tools.

As an example of an electric wire attachment device that is movably attached to an electric wire, there is a bird damage prevention tool disclosed in Patent Document 1. This bird damage prevention tool includes a pair of filament supports that are freely attachable to the electric wire at intervals in the longitudinal direction of the electric wire, and a pair of filament supports that are stretched across the pair of filament supports while positioned above the electric wire. A flexible striatum is provided. Each of the pair of filament support members has an insertion hole through which the electric wire can be inserted, and an opening/closing portion that can be switched between an open state for opening the insertion hole and a closed state for closing the insertion hole. Further, the filamentary support located on one side of the wire in the longitudinal direction is provided with a first connection portion that can be freely coupled with a second coupling portion of the filamentous support of another bird damage prevention device. The filament support positioned on the other side in the longitudinal direction of the electric wire is provided with a second connection part that can be freely connected to the first connection part of the filament support of another bird damage prevention device.

In the method for installing bird damage prevention devices, a predetermined number of bird damage prevention devices that can be movably attached to electric wires are prepared. An installation work in which a predetermined number of bird damage preventive devices are attached to electric wires in order and sent to a predetermined installation position while connecting the preceding bird damage preventive device and the succeeding bird damage preventive device with the first connecting portion and the second connecting portion. is executed.

JP 2020-184975 A

In the installation method for bird damage preventive devices described above, a predetermined number of bird damage preventive devices are connected to the previous bird damage preventive device and attached to electric wires in order at one installation work place, and sent to a predetermined installation position. can be done. As a result, even in high-place work using a work tool, the installation work of the bird damage prevention device can be efficiently carried out. However, the predetermined number of bird protection devices attached to the electric wire are in a state of being able to move along the electric wire, although adjacent ones are mutually connected. Therefore, there is a possibility that a predetermined number of bird damage prevention devices may be moved from the predetermined installation position of the electric wire due to the influence of wind or the like.

In view of this situation, the main object of the present invention is to provide an electric wire stopper that is useful for fixing an electric wire attachment device such as a bird damage prevention device that is movably attached to an electric wire, and a method for installing the bird damage prevention device using the same. It is in the point to do.

A first characteristic configuration of the present invention is an electric wire stopper, which has a gripping portion for gripping the outer peripheral surface of an electric wire, and is of a swing opening/closing type capable of forming an opening for introducing the electric wire into the gripping portion. a pair of gripping members, a closing urging portion that biases the pair of gripping members toward the opening closing position, and a wire gripping position in which the pair of gripping members are swung toward the closing side from the opening closing position. and a locking portion for fixing.

According to this configuration, the pair of gripping members at the opening closing position is swung to the opening side against the closing biasing force of the closing biasing portion, and the electric wire is pulled out from the opening formed between the pair of gripping members. It is introduced and guided into the holding part. After the electric wire is introduced, when the opening operation force applied to the pair of gripping members is released, the pair of gripping members swing back to the opening closing position by the closing biasing force of the closing biasing portion. At this opening closed position, the electric wire introduced into the gripping portion cannot escape from the pair of gripping members to the outside. In other words, the pair of gripping members are temporarily fixed to the electric wire, and therefore do not come off. When the pair of gripping members temporarily fixed to the electric wire is swung from the opening closing position to the wire gripping position, the locking portion is actuated, and the pair of gripping members are gripped and fixed to the electric wire via the gripping portion.
Therefore, after opening the pair of gripping members and introducing the electric wire into the gripping portion through the opening thereof, the pair of gripping members can be quickly moved to the electric wire simply by releasing the opening operation force applied to the pair of gripping members. Can be temporarily fixed. Therefore, even when working at a high place using a work tool, the work of fixing the stopper to the electric wire can be performed efficiently and easily.

A second characteristic configuration of the present invention is that at least one of the gripping members is provided with an introduction guide portion for introducing and guiding the electric wire into an opening formed by swinging the pair of gripping members to open. .

When introducing and guiding the electric wire into the gripping portion through the opening formed between the pair of gripping members, it is possible to reliably and smoothly introduce and guide the electric wire into the gripping portion along the introduction guide portion provided on at least one of the gripping members. can.

A third characteristic configuration of the present invention is that the closing urging portions are arranged on both sides of the pair of gripping members in the wire longitudinal direction.

According to this configuration, by arranging the closing urging portions on both sides of the pair of gripping members in the longitudinal direction of the electric wire, bending of the pair of gripping members on both sides of the pair of gripping members is suppressed during the opening and closing swing. As a result, the pair of gripping members can be smoothly opened and closed with good balance.

According to a fourth characteristic configuration of the present invention, the gripping portion is provided with an elastic body that is compressed between the outer peripheral surface of the wire and the wire as the pair of gripping members swing closed to the wire gripping position. in the point.

According to this configuration, when the pair of gripping members temporarily fixed to the electric wire is pivoted from the opening closing position to the electric wire gripping position, the elastic body provided in the gripping portion is compressed between the outer peripheral surface of the electric wire. . As a result, even if the outer diameter of the electric wire varies slightly, the electric wire stopper can be tightly held and fixed to the electric wire.

In a fifth characteristic configuration of the present invention, the closing urging portion includes flexible pieces that abut against each other as the pair of gripping members swing open, at portions of the pair of gripping members facing each other in the swinging direction. It is in the point that it is provided and configured.

According to this configuration, when the pair of gripping members in the opening closing position is swung toward the opening side, the flexible pieces provided at the portions of the pair of gripping members facing each other in the swinging direction come into contact with each other. The amount of bending deformation of the pair of bending pieces increases with subsequent opening operations. The amount of flexural deformation of the pair of flexing pieces serves as a closing urging force for swinging the pair of gripping members back to the opening closing position.
Therefore, the closing urging portion that urges the pair of gripping members to close to the opening closing position can be configured with a simple and inexpensive structure such as a pair of flexible pieces. Moreover, at the opening closing position, the pair of flexible pieces are in contact or non-contact state with no load, and the biasing force can be reliably released without providing a biasing force releasing structure.

A method for installing a bird damage prevention device using the electric wire stopper according to any one of the first to fifth characteristic configurations of the present invention, wherein a predetermined number of the bird damage prevention devices are movably attached to the electric wire. and installing a predetermined number of the bird damage preventive devices in order to the electric wire and sending them to a predetermined installation position while connecting the preceding bird damage preventive device and the subsequent bird damage preventive device. and a fixing work step of attaching the electric wire stopper to the electric wire while sandwiching the bird damage preventive device in the final order.

According to this configuration, at one installation work site, a predetermined number of bird damage preventive devices can be attached to electric wires in order while being connected to the previous bird damage preventive device, and sent to a predetermined installation position. As a result, even in high-place work using a work tool, the installation work of the bird damage prevention device can be efficiently carried out. In addition, by attaching at least two wire stoppers to the electric wire in a state in which the bird damage preventive device of the final order is sandwiched among the predetermined number of bird damage preventive devices installed at the predetermined installation positions, the bird damage preventive device can be installed. At the work site, a predetermined number of connected bird protection devices can be simultaneously fixed to the electric wire.

Perspective view of the fixed part side of the stopper for electric wire Perspective view of the moving part side of the electric wire stopper Disassembled perspective view of electric wire stopper Longitudinal cross-sectional view when a pair of gripping members are operated to the electric wire gripping position Longitudinal cross-sectional view when a pair of gripping members are operated to the opening closing position Longitudinal cross-sectional view when a pair of gripping members is operated to the maximum open position Side view of electric wire holding position Perspective view of bird damage prevention tool (a) A perspective view of the support with the insertion hole in an open state, viewed from one side in the longitudinal direction, (b) A perspective view of the support with the insertion hole in a closed state, viewed from one side in the longitudinal direction. (a) Perspective view of the support with the insertion hole open, viewed from the other side in the longitudinal direction, (b) Perspective view of the support with the insertion hole closed, viewed from the other longitudinal side Perspective view before connecting the bird damage prevention tool Perspective view when connecting the bird damage prevention device Perspective view showing installation method of bird damage prevention tool Front view with the wire stopper installed

An embodiment of the present invention will be described based on the drawings.
FIGS. 1 to 4 show an electric wire stopper A used when fixing a bird damage prevention device B (an example of an electric wire attachment device) movably attached to the electric wire 1 shown in FIG. This electric wire stopper A has a gripping portion 4 for gripping the outer peripheral surface of the electric wire 1, and is a pair of rocking opening/closing type that can form an opening 8 (see FIG. 6) for introducing the electric wire into the gripping portion 4. a pair of gripping members 2 and 3, a closing biasing portion 5 that biases the pair of gripping members 2 and 3 to the opening closing position P2 (see FIG. 5), and a pair of gripping members 2 and 3 from the opening closing position P2 and a locking portion 6 that is held and fixed at a wire holding position P1 (see FIGS. 4 and 7) swung to the closing side.

The pair of gripping members 2 and 3 are made of polycarbonate resin (PC/PET alloy). on the right side) and the gripping member 3 .
As shown in FIGS. 1 to 4, the gripping member 2 on the fixing operation side includes an arc-shaped gripping plate portion 21 having an arc-shaped gripping surface 21a curved in a substantially semicircular shape with a radius larger than the outer diameter of the wire 1, and this An operation plate portion 22 integrally extending downward from the lower end of the arc-shaped gripping plate portion 21 and an upper end of the arc-shaped gripping plate portion 21 and integrally formed at the central portion in the width direction along the longitudinal direction of the electric wire 1 and a bearing portion 23 .
At the lower half side portion 22B of the operation plate portion 22, when the pair of gripping members 2 and 3 are swung from the opening closing position P2 shown in FIG. 5 to the electric wire gripping position P1 shown in FIG. A through hole 24 is formed in the member 3 into which the narrow lower half portion 32B of the operation plate portion 32 can enter.
13 is provided on the inner surface 22a of the lower half side portion 22B of the operating plate portion 22 and facing the lower half side portion 32B of the operating plate portion 32 of the gripping member 3 on the movable operation side. A plurality of non-slip projections 25 are formed to prevent slipping during gripping operation with the tool C or the like.

Further, as shown in FIG. 1, a pair of right and left grip plates extending over the entire area from the upper end of the arcuate gripping plate portion 21 to the lower end of the operating plate portion 22 are provided on both sides in the width direction of the arcuate gripping plate portion 21 and the operation plate portion 22 . A side plate portion 26 is integrally formed. The outer surfaces of the pair of left and right side plate portions 26 are configured as smooth stopper surfaces 26a that come into contact with the bird damage prevention device B attached to the electric wire 1 to prevent movement thereof. Of the pair of left and right side plate portions 26, the arcuate side plate portion 26A corresponding to the arcuate gripping plate portion 21 is configured to be wider than the linear side plate portion 26B corresponding to the operation plate portion 22. They are properly abutted in the longitudinal direction.

As shown in FIGS. 1 to 4, the gripping member 3 on the movable operation side includes an arc-shaped gripping plate portion 31 having an arc-shaped gripping surface 31a curved in a substantially semicircular shape with a radius larger than the outer diameter of the electric wire 1, and this An operation plate portion 32 integrally extending downward from the lower end of the arc-shaped gripping plate portion 31 and an upper end of the arc-shaped gripping plate portion 31 and integrally formed at the central portion in the width direction along the longitudinal direction of the electric wire 1 and a cylindrical rocking fulcrum shaft portion 33 .
A lower half side portion 32B of the operation plate portion 32 is configured in an inclined posture so as to approach the operation plate portion 22 of the holding member 2 on the fixed operation side toward the lower side. Therefore, when the pair of gripping members 2 and 3 are swung from the opening closing position P2 shown in FIG. 5 to the wire gripping position P1 shown in FIG. The half-side portions 22B, 32B can be easily clamped by a working tool C or the like shown in FIG.
In addition, on the outer surface of the lower half side portion 32B of the operation plate portion 32 in the gripping member 3 on the movable operation side, a plurality of anti-slip strips are provided to prevent slipping during the gripping operation with the work tool C shown in FIG. A protrusion 34 is formed.

Further, as shown in FIG. 2, on both sides in the width direction of the arcuate gripping plate portion 31 and the operation plate portion 32 of the gripping member 3 on the movable operation side, there are provided from the upper end of the arcuate gripping plate portion 31 to the upper and lower intermediate portions of the operation plate portion 32 . A pair of left and right side plate portions 35 having a length extending to the position are integrally formed. The outer surface of the pair of left and right side plate portions 35 is configured as a smooth stopper surface 35a that abuts against the bird damage prevention device B attached to the electric wire 1 to prevent movement, similarly to the gripping member 2 on the fixed operation side. . Of the pair of left and right side plate portions 35, the arcuate side plate portion 35A corresponding to the arcuate gripping plate portion 31 is configured to be wider than the linear side plate portion 35B corresponding to the operation plate portion 32. They are properly abutted in the longitudinal direction.

As shown in FIGS. 3, 4 and 6, the bearing portion 23 of the gripping member 2 on the fixed operation side is in a horizontal posture in which the swing fulcrum shaft portion 33 of the gripping member 3 on the movable operation side extends along the longitudinal direction of the electric wire 1 . has a bearing groove 23A that is fitted from above. A groove bottom portion 23 a of the bearing groove 23 A is formed to have an inner diameter slightly larger than the outer diameter of the swing fulcrum shaft portion 33 . The rocking fulcrum shaft portion 33 is rotatably supported around the horizontal rocking axis X at the groove bottom portion 23a. Of the bearing groove 23A, the intermediate groove portion 23b excluding the groove bottom portion 23a and the groove opening portion 23c that spreads upward is formed with a groove width slightly smaller than the outer diameter of the swing fulcrum shaft portion 33. As shown in FIG. The intermediate groove portion 23b can forcefully fit the swing fulcrum shaft portion 33, and prevents the swing fulcrum shaft portion 33 inserted into the groove bottom portion 23a from moving out.

As shown in FIGS. 1 to 4, the gripping portion 4 has a rubber-like elastic body 41 with a two-split structure on the arcuate gripping surfaces 21a and 31a of the arcuate gripping plate portions 21A and 31A of the pair of gripping members 2 and 3. It is set up and configured. The elastic body 41 is made of, for example, an olefinic elastomer (TPO), and is composed of a pair of split elastic bodies 42 formed in the same semi-cylindrical shape. As shown in FIG. 7, the pair of split elastic bodies 42 are compressed between the outer peripheral surface of the wire 1 as the pair of gripping members 2 and 3 swing closed to the wire gripping position P1. Due to the compression of the pair of split elastic bodies 42, even if the outer diameter of the wire 1 slightly fluctuates, the wire stopper A can be strongly held and fixed to the wire 1 in close contact.
A semi-circular positioning groove 43 for positioning the electric wire 1 is formed along the longitudinal direction of the electric wire 1 at the central portion of the divided surfaces 42a of the pair of divided elastic bodies 42 .

As shown in FIG. 3, a pair of partial arc-shaped gripping surfaces 21a, 31a of the arc-shaped gripping plate portions 21A, 31A are provided on both sides in the width direction thereof to restrict the movement of the pair of split elastic bodies 42 in the width direction. A movement restricting projection 44 is integrally formed. Each of the pair of divided elastic bodies 42 includes a large-diameter cylindrical portion 42A on the center side in the width direction and small-diameter cylindrical portions 42B on both end sides in the width direction. Among them, the large-diameter tubular portion 42A is fitted between the movement restricting projections 44 of the arcuate gripping surfaces 21a and 31a, and the stepped surface 42C between the large-diameter tubular portion 42A and both small-diameter tubular portions 42B is fitted into the arcuate gripping surface 21a. , 31a abut against the inner side surfaces 44a of both movement restricting projections 44. As shown in FIG. Due to the contact between the stepped surfaces 42C of the split elastic body 42 and the inner side surfaces 44a of the movement restricting projections 44, the split elastic body 42 is restricted from moving in the wire longitudinal direction with respect to the arcuate gripping plate portions 21A and 31A.

Further, as shown in FIG. 3, a circular engaging hole 45 penetrating the elastic body 41 in the radial direction is provided at the center position in the width direction of both arcuate gripping plate portions 21A and 31A and at the center position in the circumferential direction. is formed. At the center position in the width direction and at the center position in the circumferential direction on the outer peripheral surface of the large-diameter cylindrical portion 42A of each split elastic body 42, the engaging hole 45 of the corresponding arcuate gripping plate portions 21A and 31A is engaged. A cylindrical engaging projection 46 is integrally formed.

As shown in FIGS. 1 to 4, the closing urging portions 5 are arranged at symmetrical positions on both sides of the pair of gripping members 2 and 3 in the longitudinal direction (width direction) of the electric wire. By symmetrically arranging the closing urging portions 5 in this manner, the pair of gripping members 2 and 3 are prevented from wrinkling at both sides in the width direction during the opening and closing swing. As a result, the pair of gripping members 2 and 3 can be smoothly opened and closed with good balance.

The closing urging portion 5 is provided at portions of the pair of gripping members 2 and 3 that face each other in the swinging direction. It is constructed by providing pieces 51 and 52 .
As shown in FIGS. 1 and 3, one flexible piece 51 provided on the gripping member 2 on the fixed operation side protrudes outward in an arc shape from lower portions on both sides in the width direction of the arcuate gripping plate portion 21 . It is integrally formed in a cantilever shape. As shown in FIGS. 1 to 3, the other flexible pieces 52 provided on the gripping member 3 on the movable operation side are located on both sides in the width direction of the upper end of the arcuate gripping plate portion 31 and at both ends of the swing fulcrum shaft portion 33. is formed integrally with the large-diameter shaft portion 36 that supports the . As shown in FIGS. 5 and 6, the distal end of one flexible piece 51 abuts against the outer surface of the other flexible piece 52 by swinging the gripping member 3 on the movable operation side with respect to the gripping member 2 on the fixed operation side. .

As shown in FIG. 5, in a state in which the flexible piece 52 of the gripping member 3 on the movable operation side is in contact with the flexible piece 51 of the gripping member 2 on the fixed operation side without load, the pair of gripping members 2 and 3 are in contact with each other. No closing biasing force is generated. Therefore, the position at which the closing urging force disappears is the opening closing position P2 of the pair of gripping members 2 and 3 . When the pair of gripping members 2 and 3 are swung from the opening closing position P2 to the opening side, the amount of flexural deformation of the two flexible pieces 51 and 52 in the abutting state increases with the swinging to open. The elastic restoring force of both bending pieces 51 and 52 when the opening operation force of the pair of gripping members 2 and 3 is released acts as a closing urging force.
FIG. 6 shows the maximum open position P3 of the pair of gripping members 2,3. This maximum opening position P3 is defined by the contact between the swinging restriction protrusion 37 formed on the outer peripheral surface of the bearing portion 23 of the gripping member 2 on the fixed operation side and the outer surface 31b of the arc-shaped gripping plate portion 31 of the gripping member 3 on the movable operation side. regulated by contact.

Further, as described above, the closing urging portion 5 that urges the pair of gripping members 2 and 3 to close and urge the opening closing position P2 can be configured with a simple and inexpensive structure of the pair of flexible pieces 51 and 52. . Moreover, at the opening closing position P2, the pair of flexible pieces 51 and 52 are in contact or non-contact state with no load, and the biasing force can be reliably released without providing a biasing force releasing structure.

As shown in FIGS. 3 to 5, the lock portion 6 includes a lock arm 61 integrally formed with the operation plate portion 22 of the grip member 2 on the fixed operation side, and an upper portion of the operation plate portion 32 of the grip member 3 on the movable operation side. and a locking hole 62 formed through the half-side portion 32A. The lock arm 61 is formed in the shape of an arc having a radius around the pivot axis X. As shown in FIG. The width of the lock arm 61 is set so that it can pass through the lock hole 62 . Lock claws 63 which can be selectively engaged with the upper opening edge 62a on the outer surface side of the lock hole 62 in accordance with the outer diameter of the electric wire 1 are provided at three places in the electric wire gripping area along the arc direction on the upper surface of the lock arm 61. are integrally formed.

When the pair of gripping members 2 and 3 are closed from the opening closing position P2 to the wire gripping position P1, the lock claws 63 pass through the lock hole 62 due to the bending deformation of the lock arm 61. As shown in FIG. Therefore, as shown in FIG. 6, the rear surface of each locking claw 63 that comes into contact during this passing movement is formed on an inclined surface 63a located on the operation plate portion 22 side of the gripping member 2 on the fixed operation side toward the upper side. The upper inner surface of the lock hole 62 that contacts the inclined surface 63a of each lock claw 63 is formed on an inclined surface 62b that is located on the operation plate portion 22 side of the gripping member 2 on the fixed operation side toward the upper side.

When the pair of gripping members 2 and 3 is at one of the wire gripping positions P1 and is in the minimum diameter lock position that is swung to the maximum closed position, the lock claw 63 positioned on the base end side of the lock arm 61 and the lock hole 62 is engaged with the upper opening edge 62a on the outer surface side. When the pair of gripping members 2 and 3 is in one of the wire gripping positions P1 and is in the intermediate diameter lock position that is swung to the intermediate closed position, the lock claw 63 positioned in the middle of the lock arm 61 and the outer surface side of the lock hole 62 are positioned. engages with the upper opening edge 62a. When the pair of gripping members 2 and 3 is in one of the wire gripping positions P1 and is in the maximum diameter lock position that is swung to the minimum closed position, the outer surface of the lock claw 63 and the lock hole 62 located on the tip side of the lock arm 61 side upper opening edge 62a.

Further, as shown in FIG. 5, the tip of the lock claw 63 at the intermediate position and the tip of the lock claw 63 at the tip position are engaged with the outer surface of the upper half side portion 32A of the gripping member 3 on the movable operation side. An engagement projection 63b that engages with the joint recess 38 is formed.
FIG. 4 shows an operating state in which the pair of gripping members 2 and 3 is in the minimum diameter lock position, which is one of the wire gripping positions P1. In this FIG. 4, the electric wire 1 does not exist. Therefore, since the pair of split elastic bodies 42 are not compressed, no elastic restoring force is generated on the diameter-expanding side of the pair of split elastic bodies 42 . Therefore, FIG. 4 shows a state in which a gap is generated between the lock claw 63 located on the base end side of the lock arm 61 and the upper opening edge 62 a on the outer surface side of the lock hole 62 .
However, when the electric wire 1 is present, an elastic restoring force is generated toward the enlarged diameter side of the pair of divided elastic bodies 42 . Due to the elastic restoring force, each locking claw 63 and the upper opening edge 62a on the outer surface side of the locking hole 62 come into contact with each other.

As shown in FIGS. 5 and 6, at least one of the pair of gripping members 2 and 3 has an introduction guide portion for introducing and guiding the wire 1 into an opening 8 formed by swinging the pair of gripping members 2 and 3 apart. 7 is provided. As a result, when introducing and guiding the wire 1 into the gripping portion 4 from the opening 8 formed between the pair of gripping members 2 and 3, the electric wire 1 is guided along the introduction guide portion 7 provided on at least one of the gripping members 2 and 3. The electric wire 1 can be reliably and smoothly introduced and guided into the holding portion 4. - 特許庁

In this embodiment, the introduction guide portion 7 is provided on both gripping members 2 and 3 . As shown in FIGS. 5 and 6, the introduction guide portion 7 includes an operation plate portion 22 in the gripping member 2 on the fixed operation side, a lock arm 61 formed on the operation plate portion 22, and a gripping member on the movable operation side. 3, and the operation plate portion 32 in 3 is also used.
As shown in FIG. 5, when the pair of gripping members 2 and 3 are at the opening closing position P2, the tip of the lock arm 61 of the gripping member 2 on the fixed operation side is positioned in the lock hole of the gripping member 3 on the movable operation side. 62 is in an open closed state. In this open and closed state, the inner surface 22a of the operation plate portion 22 of the gripping member 2 on the fixed operation side, the arcuate lower surface 61a of the lock arm 61, and the inner surface 32a of the operation plate portion 32 of the gripping member 3 on the movable operation side. Thus, a downwardly-opening hook recess 71 is formed to which the electric wire 1 can be hooked from above.

As shown in FIG. 5, the electric wire 1 hooked in the hook recess 71 slides along the arc-shaped lower surface 61a of the lock arm 61 toward the operation plate portion 32 of the grip member 3 on the movable operation side. That is, the electric wire 1 slides into the inner corner portion 72 formed by the arcuate lower surface 61a of the lock arm 61 and the inner surface 32a of the operation plate portion 32 of the grip member 3 on the movable operation side.

Next, with the electric wire 1 positioned at the inside corner 72, the operation plate portion 22 of the holding member 2 on the fixed operation side is clamped by a working tool C or the like shown in FIG. 13 and pushed downward. As a result, as shown in FIG. 6, the grip member 3 on the movable operation side in contact with the electric wire 1 opens and swings around the swing axis X. As shown in FIG. Along with this opening swing, an opening 8 is formed between the tip of the lock arm 61 and the inner surface 32a of the operation plate portion 32 of the gripping member 3 on the movable operation side. The electric wire 1 is guided from the opening 8 along the inner side surface 32a of the operation plate portion 32 of the gripping member 3 on the movable operation side into the positioning groove 43 at the center of the divided surface 42a of the divided elastic body 42. As shown in FIG.

There are various types of bird damage preventive devices B, but the electric wire stopper A of the present invention can be applied to any of the bird damage preventive devices B.
Next, an example of the bird damage prevention device B will be explained based on FIGS. 8 to 12. FIG.
As shown in FIG. 8, the bird damage prevention device B includes a pair of supports 80 which are spaced apart in the longitudinal direction of the wire 1 and can be freely attached to the wire 1, and a pair of support members 80 positioned above the wire 1. An upper bridge 81 that can be freely constructed over the supports 80 and a lower bridge 82 that can be freely constructed over the pair of supports 80 while positioned below the electric wire 1 are provided.

As shown in FIGS. 8 to 12, the support 80 is constructed by assembling two members, a support main body 83 and a movable body 84. As shown in FIGS. The movable body 84 is attached to the support body 83 so as to be vertically movable. A groove 85 is formed in the support body 83 along the vertical direction. The movable body 84 is assembled in a state of being engaged with the groove portion 85 and is configured to be vertically movable with respect to the support body 83 while being guided by the groove portion 85 .

The support body 80 has an insertion hole portion 86 through which the electric wire 1 can be freely inserted, a lock portion 87 that locks the insertion hole portion 86 in a closed state, and an upper fixing portion 88 that fixes the end portion of the upper bridging body 81 . , and a lower fixing portion 89 for fixing the end portion of the lower bridging body 82 .
As shown in FIGS. 9(a) and 9(b), the insertion hole 86 is provided with an upper recess 86a forming its upper portion and a lower recess 86b forming its lower portion. ing. As shown in FIG. 9B, the insertion hole portion 86 is formed in a circular shape by an upper recessed portion 86a and a lower recessed portion 86b.
As shown in FIG. 9 , the upper concave portion 86 a of the insertion hole portion 86 is provided in the upper and lower intermediate portions of the support body 83 . A lower concave portion 86 b of the insertion hole portion 86 is provided in the movable body 84 . As shown in FIG. 9A, when the movable body 84 moves downward with respect to the support body 83, the lower concave portion 86b and the upper concave portion 86a are separated to open the insertion hole portion 86. When the movable body 84 is switched to the open state and moves upward with respect to the support body 83 as shown in FIG. It switches to a closed state in which the portion 86 is closed.

The upper bridging body 81 is composed of a linear rod-shaped extension body made of fiber reinforced plastic (FRP). In this way, by configuring the upper bridge 81 with a bar material, the upper parts of the pair of support bodies 80 are prevented from approaching and separating from each other, and the upper parts of the pair of support bodies 80 are maintained at an appropriate posture interval. ing.
As shown in FIG. 8, a first vertical distance D1 between the electric wire 1 inserted through the insertion hole portion 86 and the upper bridging body 81 is equal to or less than a preset distance for preventing birds from entering. is configured to be Further, the distance between the wire 1 inserted through the insertion hole portion 86 and the central portion of the lower side installation body 82 fixed to the lower side fixing portion 89 in the wire longitudinal direction is a second distance D2 that is equal to or less than the set distance. is set to

The lower bridging body 82 is composed of a rod-shaped extending body made of fiber reinforced plastic (FRP) that extends linearly and is elastically deformable in the vertical direction. The lower bridging body 82 is heavier than the upper bridging body 81 . The bird damage prevention device B employs a rod material thicker than the upper side construction member 81 as the lower side installation member 82, so that the bird damage prevention device B is attached to the electric wire 1 as shown in FIG. The center of gravity of the preventive device B is located below the electric wire 1. - 特許庁Therefore, even if the support member 80 rotates around the electric wire 1, the weight of the lower installation member 82 causes each of the pair of support members 80 to rotate around the electric wire 1, thereby changing the posture of the bird damage prevention device B. It is designed to return to the posture shown in 8. By providing the bird damage prevention device B with the lower side bridge 82 in this way, the posture of the bird damage prevention device B is stabilized.

When a plurality of bird damage preventive devices B are attached to the electric wire 1, the supports 80 of the bird damage preventive devices B adjacent in the wire longitudinal direction are connected to each other. Next, a configuration for connecting the supports 80 will be described.
Both supports 80 have the same shape, and each support 80 has a first connecting portion 90 at one end in the longitudinal direction of the wire and a second connecting portion 90 at the other end in the longitudinal direction of the wire. A portion 91 is provided. Therefore, when assembled to the bird damage prevention device B, the support member 80 of another bird damage prevention device B aligned in the longitudinal direction of the wire is positioned outside the support member 80 positioned at one end in the longitudinal direction of the wire. A first connecting portion 90 that can be freely connected to the second connecting portion 91 is arranged. In addition, on the outer side of the support 80 positioned at the other end in the longitudinal direction of the wire of the bird damage prevention device B, the first connecting portion 90 of the support 80 of another bird damage prevention device B aligned in the longitudinal direction of the wire. A second connecting portion 91 that can be freely connected to is arranged.

As shown in FIGS. 9, 11, and 12, the first connecting portion 90 has a plate-like engaging portion 90b that forms an insertion/removal gap 90a with the support body 83 in the longitudinal direction of the wire. are provided. The insertion/removal gap 90a is a gap that opens outward in the horizontal direction perpendicular to the longitudinal direction of the electric wire and in the vertical direction.

As shown in FIGS. 10 to 12, the second connecting portion 91 includes a pair of left and right first bent portions 91a extending from the left and right ends of the support body 83 by bending in the longitudinal direction of the electric wire, and the first bent portions 91a. A pair of left and right second bent portions 91b extending inwardly in the left-right direction from the distal end portion of the portion 91a are provided. Thus, the second connecting portion 91 is provided with an insertion/removal space 91c surrounded by the support body 83, the first bent portion 91a, and the second bent portion 91b. The insertion/removal space 91c is a space that opens to the other side in the longitudinal direction of the wire and to the vertical direction.

When connecting the subsequent bird damage prevention device B to the preceding bird damage prevention device B, as shown in FIGS. The first connecting portion 90 of the safety device B is operated to move in the vertical direction. At this time, since the insertion/removal space 91c of the second connection portion 91 is open in the vertical direction, the plate-like engaging portion 90b of the first connection portion 90 is inserted into the insertion/removal space 91c of the second connection portion 91. inserted. Further, since the insertion/removal gap 90 a of the first connecting portion 90 is open in the vertical direction, the second bent portion 91 b of the second connecting portion 91 is inserted into the insertion/removal gap 90 a of the first connecting portion 90 . be done. As a result, the first connecting portion 90 and the second connecting portion 91 are engaged with each other as shown in FIG. can.

Next, a method for installing the bird damage preventive device B using the wire stopper A described above will be described.
[Installation work process]
As with the bird damage prevention device B on the right side of FIG. As shown in (a), the lower recessed portion 86b and the upper recessed portion 86a are vertically spaced apart to keep the insertion hole portion 86 in an open state.
Then, as shown in FIG. 13, in the basket 10 of the aerial work vehicle parked at one installation work place, the worker 9 puts the bird damage preventive device B with the insertion hole 86 in an open state into a work tool. Sandwich with C. After the sandwiched bird damage prevention device B is lifted to a height position where the opening of the insertion hole portion 86 faces the electric wire 1 in the horizontal direction, it is horizontally moved toward the electric wire 1 side. 11, and as shown in FIGS. 9A and 10A, the wires 1 are inserted through the insertion holes 86 of the pair of supports 80 of the bird damage prevention device B. Let

12, 9(b), and 10(b), the operator 9 prepares the support body of each support 80 of the bird damage prevention device B hooked on the electric wire 1. 83 is moved downward. As the support body 83 is moved downward, the electric wire 1 presses the movable body 84 upward against the support body 83 that is moved downward. Therefore, the movable body 84 moves upward relative to the support body 83, and the lower recess 86b and the upper recess 86a approach each other like the bird damage prevention device B shown in FIG. The hole portion 86 is switched from the open state to the closed state. As the insertion hole portion 86 is closed, the lock portion 87 is switched to a locked state for locking the insertion hole portion 86 in the closed state.

By the above-described procedure, as shown in FIGS. 13 and 14, a predetermined number of bird damage prevention devices B are attached to the electric wire 1 in order and sent to a predetermined installation position. At this time, the second connecting portion 91 on the other end side in the wire longitudinal direction of the preceding bird damage preventing device B and the first connecting portion 90 on the one end side in the wire longitudinal direction of the succeeding bird damage preventing device B are connected. ing. When connecting the subsequent bird damage prevention device B to the preceding bird damage prevention device B, as shown in FIG. The first connecting portion 90 of the tool B is moved up and down. As a result, the plate-like engaging portion 90b of the first connecting portion 90 is inserted into the inserting/removing space 91c of the second connecting portion 91 . Also, the second bent portion 91 b of the second connecting portion 91 is inserted into the insertion/removal gap 90 a of the first connecting portion 90 . Thereby, as shown in FIG. 12, the first connecting portion 90 and the second connecting portion 91 are engaged and connected.

[Fixing work process]
As shown in FIG. 14, two wire stoppers A are attached to the wire 1 while sandwiching the support 80 at the other end in the wire longitudinal direction of the bird damage prevention device B in the final order. The stopper surfaces 26a and 35a (see FIGS. 1 and 2) of the side plate portions 26 and 35 of the electric wire stopper A are in contact with or close to the second connecting portion 91 on the outer side of the support 80 on the other end side. placed. The stopper surfaces 26a, 35a of the side plate portions 26, 35 of the other electric wire stopper A are in contact with or arranged close to the inner first connecting portion 90 of the support 80 on the other end side.

When attaching the electric wire stopper A to the electric wire 1, as shown in FIG. When the pair of gripping members 2 and 3 are in the opening closing position P2, the inner surface 22a of the operation plate portion 22 of the gripping member 2 on the fixed operation side, the arcuate lower surface 61a of the lock arm 61, and the gripping member on the movable operation side. 3 and the inner side surface 32a of the operation plate portion 32, a hooking recess 71 with a downward opening is formed to which the electric wire 1 can be hooked from above.

The lower end of the holding member 2 on the fixing operation side of the electric wire stopper A is clamped by the work tool C. As shown in FIG. After the clipped electric wire stopper A is lifted to a height position where the opening of the latch recess 71 is positioned above the electric wire 1, the latch recess 71 of the electric wire stopper A is latched onto the electric wire 1. - 特許庁
As shown in FIG. 5, the electric wire 1 hooked in the hook recess 71 slides along the arc-shaped lower surface 61a of the lock arm 61 toward the operation plate portion 32 of the grip member 3 on the movable operation side. That is, the electric wire 1 slides into the inner corner portion 72 formed by the arcuate lower surface 61a of the lock arm 61 and the inner surface 32a of the operation plate portion 32 of the grip member 3 on the movable operation side.

Next, with the electric wire 1 positioned at the inner corner 72, the operation plate portion 22 of the holding member 2 on the fixed operation side is pushed downward with the work tool C shown in FIG. As a result, as shown in FIG. 6, the grip member 3 on the movable operation side in contact with the electric wire 1 opens and swings around the swing axis X. As shown in FIG. Along with this opening swing, an opening 8 is formed between the tip of the lock arm 61 and the inner surface 32a of the operation plate portion 32 of the gripping member 3 on the movable operation side. The electric wire 1 is guided from the opening 8 along the inner side surface 32a of the operation plate portion 32 of the gripping member 3 on the movable operation side into the positioning groove 43 at the center of the divided surface 42a of the divided elastic body 42. As shown in FIG.

After the electric wire 1 is introduced and guided between the pair of split elastic bodies 42, the opening force applied to the pair of gripping members 2 and 3 is released. The pair of gripping members 2 and 3 compresses the pair of divided elastic bodies 42 by the elastic restoring forces of the bending pieces 51 and 52, and swings closed to the opening closing position P2. As a result, the pair of gripping members 2 and 3 can be quickly temporarily fixed to the electric wire 1 .

Next, the lower ends of the operation plate portions 22 and 32 of the pair of gripping members 2 and 3 are held by the working tool C, and the pair of gripping members 2 and 3 are opened while further compressing the pair of divided elastic bodies 42. A closing operation is performed from the closed position P2 to the wire gripping position P1. By this closing operation, one lock claw 63 of the lock arm 61 is engaged with the upper opening edge 62a on the outer surface side of the lock hole 62, so that the wire stopper A can be strongly held and fixed to the wire 1 in close contact. .

[Another embodiment]
(1) In the above-described embodiment, the introduction guide portion 7 is composed of the operation plate portion 22 of the gripping member 2 on the fixed operation side, the lock arm 61 formed on the operation plate portion 22, and the gripping member 3 on the movable operation side. and the operation plate portion 32 in . However, it is not limited to this configuration. For example, at least one of the pair of gripping members 2 and 3 may be provided with a dedicated introduction guide member for introducing and guiding the wire 1 into the opening 8 formed by swinging the pair of gripping members 2 and 3 apart. good.

(2) In the above-described embodiment, the closing urging portions 5 are brought into contact with the portions of the pair of gripping members 2 and 3 that face each other in the swinging direction as the pair of gripping members 2 and 3 swing open. It is configured by providing the flexible pieces 51 and 52 that are in contact with each other. However, it is not limited to this configuration. For example, the closing biasing portion 5 may be composed of a coil spring, a leaf spring, or the like.

(3) In the above-described embodiment, the closing urging portions 5 are arranged at symmetrical positions on both sides of the pair of gripping members 2 and 3 in the wire longitudinal direction (width direction). However, it is not limited to this configuration. For example, the closing biasing portion 5 may be arranged at the central position of the pair of gripping members 2 and 3 in the longitudinal direction of the electric wire.

1 Electric wire 2 Gripping member 3 Gripping member 4 Gripping portion 5 Closing biasing portion 6 Locking portion 7 Introduction guide portion 8 Opening 41 Elastic body 51 Flexible piece 52 Flexible piece A Stopper for electric wire B Bird damage prevention device P1 Electric wire holding position P2 Opening closed position

Claims (4)

A pair of oscillating open/close type gripping members having a gripping portion for gripping the outer peripheral surface of the electric wire and capable of forming an opening for introducing the electric wire into the gripping portion, and the pair of gripping members at the opening closing position. a closing urging portion that urges the wire to close; and a locking portion that holds and fixes the pair of gripping members at a wire gripping position in which the pair of gripping members are swung toward the closing side from the opening closing position ,
The closing urging portion has a contact portion, and when the pair of gripping members is positioned at the opening closing position, the abutment portion comes into contact with no load or becomes non-contact with a closing urging force. disappears, and as the pair of gripping members swings from the opening closing position to the opening side, the bending deformation amount of the contacting portions in the contacting state increases and a closing urging force acts, and the pair of A wire stopper in which the contact portion is in a non-contact state when the gripping member is positioned at the wire gripping position in which the gripping member is swung toward the closing side from the opening closing position . A pair of oscillating open/close type gripping members having a gripping portion for gripping the outer peripheral surface of the electric wire and capable of forming an opening for introducing the electric wire into the gripping portion, and the pair of gripping members at the opening closing position. a closing urging portion that urges the wire to close; and a locking portion that holds and fixes the pair of gripping members at a wire gripping position in which the pair of gripping members are swung toward the closing side from the opening closing position,
The closing biasing portion is a wire stopper disposed on both sides of the pair of gripping members in the wire longitudinal direction. A pair of oscillating open/close type gripping members having a gripping portion for gripping the outer peripheral surface of the electric wire and capable of forming an opening for introducing the electric wire into the gripping portion, and the pair of gripping members at the opening closing position. a closing urging portion that urges the wire to close; and a locking portion that holds and fixes the pair of gripping members at a wire gripping position in which the pair of gripping members are swung toward the closing side from the opening closing position,
The closing urging portion is a wire stopper, in which flexible pieces are provided at portions of the pair of gripping members facing each other in the swinging direction so as to come into contact with each other as the pair of gripping members swing open. . A pair of oscillating open/close type gripping members having a gripping portion for gripping the outer peripheral surface of the electric wire and capable of forming an opening for introducing the electric wire into the gripping portion, and the pair of gripping members at the opening closing position. A bird using a wire stopper , comprising: a closing biasing part for closing and biasing; and a locking part for holding and fixing the pair of gripping members at a wire gripping position where the pair of gripping members are swung toward the closing side from the opening closing position. In the installation method of the bird damage prevention device, a predetermined number of the bird damage prevention devices that are movably attached to the electric wire are prepared, and the preceding bird damage prevention device and the subsequent bird damage prevention device are connected. an installation step of sequentially attaching a predetermined number of said bird damage preventive devices to said electric wires and sending them to predetermined installation positions; A construction method for installing a bird damage prevention tool comprising a process.

Images