JP2007335246A - Arrester cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arrestor cover which can be fixed firmly to the arrester and in which invasion of a rod shaped object such as twigs, wires that birds carry for nesting can be prevented completely. <P>SOLUTION: This arrester cover consists of a small diameter cylindrical part 1 that is adhered by a cap body 38 to cover a charging part and a large diameter cylindrical part 2 that is communicated with the small diameter cylindrical part 1 on the same axial line and that is adhered by the arrester main body 36a, one side-fringe parallel to an axis line in the peripheral wall 5 is made to be a hinge part 7, the other side-fringe is cut and separated, the separated part 8 can be opened and closed freely around the hinge part 7, flange pieces 9, 9 are extendedly installed respectively on both sides of the separated part 8, an engaging belt piece 11 aligned with a plurality of engaging claws 10 is protruded and installed at either one of the flange pieces 9, an engaging hole 12 in which the engaging belt piece 11 can be inserted into the other flange piece 9 and engaged with either one of the engaging clawts 10 is opened and installed, and by inserting the engaging belt piece 11 into the engaging hole 12 and by changing the engaging position of the engaging claws 10, spacing of the separated part 8 can be adjusted to be wider or narrower freely. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an arrester cover attached to a lightning arrester arrester installed on a utility pole.

  Conventionally, the present applicant has developed the following type of arrester cover. That is, the arrester cover is attached to, for example, an arrester erected on the upper surface of a metal arm on a power pole, and the cap body is held so that a required space is held between the cap body covering the charging portion. A large-diameter cylindrical portion that covers and a small-diameter cylindrical portion that covers the lower portion of the connector with leads that is connected to the upper end of the large-diameter cylindrical portion and projects upward from the cap body. An upper end surface of the small-diameter cylindrical portion is opened, and an engagement groove for engaging a rib projecting from a lower outer peripheral surface of the leaded connector is provided on an inner peripheral surface thereof. Moreover, the lower end surface of the large diameter cylindrical portion is also opened. Thus, the arrester cover is fixed in a suspended state by attaching the small-diameter cylindrical portion to the connector with leads (see, for example, Patent Document 1).

Japanese Patent No. 2609992 (2nd page, FIG. 5, FIG. 7)

  In general, the arrester is divided into 20 to 30 types depending on the size and shape, and the arrester cover of Patent Document 1 needs to be prepared according to the size of the arrester. It is not realistic to prepare different types of arrester covers and use them according to the arresters to be attached. Therefore, it is conceivable to divide 20 to 30 types of arresters into several size categories, and to produce arrester covers for each size category. There is a possibility that a space between the body or the arrester main body and the large-diameter cylindrical portion of the arrester cover opens greatly. In addition, since the lower end surface of the large-diameter tube portion is open, the mounting state of the arrester cover becomes unstable, or a rod-like object such as a twig or wire that the bird carries for nesting is There remains a point to be improved that there is a risk of entering through the lower opening.

  Therefore, the present invention has been made in view of the above improvements, and can be firmly fixed to the arrester without loosening, and can completely prevent the intrusion of sticks such as twigs and wires that birds carry for nesting. An object of the present invention is to provide such an arrester cover.

  In order to achieve this object, an arrester cover according to the present invention includes a small-diameter cylindrical portion that is attached to a cap body that covers a charging portion that protrudes from the arrester main body, and the small-diameter cylindrical portion that communicates on the same axis along the same axis. It is composed of a large-diameter cylindrical part to be worn, and one side edge parallel to the axis of the peripheral wall is used as a hinge part and the other side edge is separated so that the separation part can be freely opened and closed around the hinge part. An arrester cover, extending from both sides of the cut-off portion, with a hook piece extending from one of the hook pieces, and an engaging band piece projecting from one of the hook pieces. An engagement hole is formed through which the engagement band piece is inserted and can be engaged with any one of the engagement claws, and the engagement band piece is inserted into the engagement hole and the engagement position of the engagement claw is set. By changing, the interval of the separation part can be adjusted freely. It was cut way.

  At this time, a twig, a wire, etc. that the inner peripheral edge abuts on the outer peripheral surface of the cap body along the inner peripheral surface between the small diameter cylindrical portion and the large diameter cylindrical portion and the bird carries for nesting. It is preferable to provide an intrusion prevention piece that prevents the rod-shaped material from entering the charging unit.

  Further, along the inner peripheral edge of each opening of the outer end surface in the axial direction in the small diameter cylindrical portion and the large diameter cylindrical portion, the caps are spaced apart by a predetermined gap, and the tip side projects outward from the respective openings. It is preferable to arrange a plurality of tongue-like pieces in contact with the outer peripheral surface of the body or the arrester body.

  Further, the intrusion prevention piece is continuously provided in an annular shape, and a plurality of notches are provided along a peripheral edge of the intrusion prevention piece. When projecting from the axial direction, each notch is formed with the small diameter cylindrical portion. It is preferable that the position is shifted from each cut groove with the large-diameter cylindrical portion.

  Furthermore, it is preferable that the back end portion of the kerf provided between the tongue-like pieces reaches the inner surfaces of the peripheral walls of the small diameter cylindrical portion and the large diameter cylindrical portion.

  In the arrester cover according to claim 1 of the present invention, hook pieces are provided on both sides of the separation portion at the other end of the small / large diameter cylindrical portion, and a plurality of engaging claws are arranged on one of the hook pieces. The engagement band piece is projected, and the engagement band piece is inserted into the other flange piece so that an engagement hole that can be engaged with any one of the engagement claws is opened. By changing the engaging position of the engaging claw, the distance between the separating portions can be adjusted so as to be freely sandwiched. Therefore, even if the size of the arrester changes, there is an effect that it can be firmly fixed to the arrester by changing the engagement position of the engagement claw of the engagement strip and the mounting state is stabilized.

  The arrester cover according to claim 2 of the present invention is such that the inner peripheral edge abuts the outer peripheral surface of the cap body along the inner peripheral surface between the small diameter cylindrical portion and the large diameter cylindrical portion, and the bird nests. For this reason, an intrusion prevention piece was installed to prevent the intrusion of sticks such as twigs and wires brought into the charging part. Therefore, the protective function which prevents the penetration | invasion of rod-shaped objects, such as the said twig and a wire, improves.

  The arrester cover according to claim 3 of the present invention is separated by a predetermined groove along the inner peripheral edge of each opening of the outer end surface in the axial direction of the small diameter cylindrical portion and the large diameter cylindrical portion, and the tip side is A plurality of tongue-shaped pieces projecting outward from the openings and abutting on the outer peripheral surfaces of the cap body and the arrester body were arranged in a row. Therefore, the protective function which prevents the penetration | invasion of rod-shaped objects, such as the said twig and a wire, improves further.

  In the arrester cover according to claim 4 of the present invention, the intrusion prevention piece is continuously provided in an annular shape, and a plurality of cutouts are provided along the inner peripheral edge of the arrester cover to discharge rainwater. And when projecting from the axial direction, each notch is displaced in position from each cut groove of the small diameter cylindrical portion and the large diameter cylindrical portion. Therefore, even if the twig or wire rod-like object enters the inside from the kerf, the tip of the tread easily touches the intrusion prevention piece and it is difficult to enter as it is. The protective function to prevent intrusion is further improved.

  In the arrester cover according to claim 5 of the present invention, the back end portion of the kerf provided between the tongue-like pieces reaches the inner surface of the peripheral wall of the small diameter cylindrical portion and the large diameter cylindrical portion. Therefore, even if rainwater enters the arrester cover during rain, it is easily discharged from the back end of each kerf.

  Hereinafter, embodiments of an arrester cover according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an arrester cover according to the present invention, and FIG. 2 is a perspective view of the same opened state. The arrester cover A is formed of a flame-retardant synthetic resin material, for example, flame-retardant polyethylene, and has elasticity. The arrester cover A has a diameter smaller than that of the cylindrical small-diameter cylindrical portion 1 and is coaxial with the small-diameter cylindrical portion 1. It consists of the same cylindrical large-diameter cylinder part 2 which continues on a line.

  The small-diameter cylindrical portion 1 and the large-diameter cylindrical portion 2 both communicate with each other, and the outer end surface in the axial direction of the small-diameter cylindrical portion 1 is open 3, and the outer end surface in the same direction of the large-diameter cylindrical portion 2 is also There are four openings. And the flat extension part 6 and 6 is provided in the one side edge side in the surrounding wall 5 of the small and large diameter cylinder parts 1 and 2, and the cylindrical hinge part parallel to the said axis line is continued to the one side edge 7 is provided. Closed pieces 6a, 6a that close the gap formed between the extended portions 6, 6 when bent are provided at both end edges of one extended portion 6. The other side edge of the peripheral wall 5 is cut off so that the cut-off portion 8 can be freely opened and closed with the hinge portion 7 as a center. In addition, hook pieces 9 and 9 are provided on both sides of the separating portion 8 so as to be substantially flush with the extending portions 6 and 6, respectively.

  An engagement strip 11 having a plurality of engagement claws 10, 10... Arranged on one side thereof is projected from the one flange 9, and the engagement strip 11 is inserted into the other flange 9. An engagement hole 12 that can be engaged with any of the engagement claws 10 is formed. By inserting the engagement strip 11 into the engagement hole 12 and changing the engagement position of the engagement claw 10, the interval between the separating portions 8 can be adjusted to be wide. Moreover, it is an internal peripheral surface of the small diameter cylinder part 1 and the large diameter cylinder part 2, Comprising: To the one side edge 1a, 2a of the said engagement belt | band | zone piece 11 side, the other edge 1b, 2b side which faces these, respectively Extending covering plates 13 and 14 are projected.

  Intrusion-preventing pieces 15 and 15 that are annular when they are closed are provided along the inner peripheral surface between the small-diameter cylindrical portion 1 and the large-diameter cylindrical portion 2. Each of these intrusion prevention pieces 15 is formed in a semicircular arc shape, and forms a ring continuously with each other. The intrusion prevention pieces 15 and 15 are charged with sticks such as twigs and wires that birds carry for nesting by contacting the outer peripheral surface of the cap body 38 whose inner peripheral edge covers the charging unit described later. It functions to prevent entry into the department. A plurality of notches 16 are provided along the inner peripheral edge of each intrusion prevention piece 15 so as to be separated from each other by a predetermined distance. Each notch 16 reaches the peripheral wall inner surface 5a.

  A plurality of tongue-shaped pieces 18 are arranged in a row along the inner peripheral edge of the opening 3 on the outer end surface of the small-diameter cylindrical portion 1, separated by a predetermined groove 17. Each of these tongue-like pieces 18 has a tip end projecting outward from the opening 3. Similarly, a plurality of tongue-like pieces 20 are arranged along the inner peripheral edge of the opening 4 on the outer end surface of the large-diameter cylindrical portion 2 with a predetermined groove 19 therebetween. These tongue-like pieces 20 are also configured such that the tip side protrudes outside the opening 4. Each tongue-like piece 18 of the small-diameter cylindrical portion 1 has a depressed central portion of the edge, but each tongue-shaped piece 20 of the large-diameter cylindrical portion 2 does not have a depressed central portion of the edge. This is because each tongue-shaped piece 18 on the small-diameter cylindrical portion 1 side contacting the outer peripheral surface of the cap body 38 bends more than the tongue-shaped piece 20 on the large-diameter cylindrical portion 2 side that enters between the annular ribs 39 of the arrester body 36a. This is for adjusting the flexibility so that each tongue-shaped piece 18 is in good contact with the outer peripheral surface of the cap body 38. In addition, any of the kerfs 17 and 19 reach the inner surface 5 a of the peripheral wall 5 at the back end.

  The arrester cover according to the present invention has the above-described configuration. Next, the arrester 36 to which the arrester cover A is attached will be described. FIG. 3 is a plan view showing the upper part of the utility pole. In the figure, 30 is a utility pole, and 31 is a brace that is horizontally arranged and fixed to the utility pole 30. Electric wires 33 and 33 are installed on both sides of the end portion of the arm metal 31 via tension insulators 32. A switch 34 is disposed below the arm metal 31. A plurality of arresters 36 are mounted in a projecting manner on the mounting bracket 35 below the arm metal 31. Among these, the lead wire 37 a drawn from the tip of the arrester 36 located outside is connected to the switch 34 together with the lead wire 37 b branched from the electric wire 33.

  Therefore, the arrester cover A according to the present invention covers the front end portion of the arrester body 36a and the rear end portion of the cap body 38 as shown in FIGS. More specifically, the plurality of tongue-like pieces 20 arranged along the inner peripheral edge of the opening 4 in the large-diameter cylindrical portion 2 are the second and third annular ribs 39, 39 from the front of the arrester body 36a. Located between. In addition, a plurality of tongue-like pieces 18 arranged along the inner peripheral edge of the opening 3 in the small-diameter cylindrical portion 1 are in contact with the outer peripheral surface of the cap body 38, and both intrusion prevention pieces 15, 15 that are annular are also provided. The inner peripheral edge of the cap body 38 is in contact with the outer peripheral surface.

  In this state, the engagement strip 11 is inserted into the engagement hole 12 and pulled tightly, and the engagement claw 10 at an appropriate position is engaged with the engagement hole 12. Thereby, each tongue-like piece 20 of the inner peripheral edge of the opening 4 of the large-diameter cylindrical portion 2 is in contact with the outer peripheral surface of the arrester main body 36 a in a state of opening to the outside of the opening 4. Similarly, each tongue-like piece 18 at the inner peripheral edge of the opening 3 of the small-diameter cylindrical portion 1 is also in contact with the outer peripheral surface of the cap body 38 in a state of opening outward from the opening 3. In addition, the both intrusion prevention pieces 15 and 15 that are annular also come into tight pressure contact with the outer peripheral surface of the cap body 38. Further, both end surfaces between the extending portions 6 and 6 are closed by the closing pieces 6a and 6a.

  As described above, according to the present invention, the interval between the separating portions 8 can be adjusted in a wide range by inserting the engaging strip 11 into the engaging hole 12 and changing the engaging position of the engaging claw 10. That is, the small and large diameter cylindrical portions 1 and 2 are freely expanded. Therefore, even if the size of the arrester 36 changes, the arrester cover A can always be securely fixed to the arrester 36 by changing the engagement position of the engagement claw 10 of the engagement strip 11. The mounting state is stable.

  Further, as shown in FIG. 7, the inner peripheral edge abuts the outer peripheral surface of the cap body 38 along the inner peripheral surface between the small-diameter cylindrical portion 1 and the large-diameter cylindrical portion 2, and the bird is nesting. Since the intrusion prevention piece 15 that prevents the intrusion of a bar-like object such as a twig or wire that is carried into the charging portion is provided around, the protective function for preventing the intrusion of the bar-like object is improved.

  In addition, as shown in FIGS. 6 and 8, tongue-shaped pieces 18 and 20 are provided around the inner peripheral edges of the openings 3 and 4 on the outer end surfaces of the small-diameter cylindrical portion 1 and the large-diameter cylindrical portion 2. However, they contact the outer peripheral surface of the cap body 38 and the outer peripheral surface of the arrester body 36a, respectively, and the gap between the arrester cover A and the cap body 38 and the gap between the arrester body 36a are respectively closed. Moreover, the clearance gap between the extended parts 6 and 6 in the arrester cover A is closed by each closing piece 6a. Further, the gaps between the separating portions 8 in the small diameter cylindrical portion 1 and the large diameter cylindrical portion 2 are closed by the respective cover plates 13 and 14. Therefore, the gaps on the outer periphery of the arrester cover A are all closed, and the protective function for preventing the intrusion of sticks such as twigs and wires is further improved.

  The plurality of notches 16 provided along the inner peripheral edge of each intrusion prevention piece 15 are more than the cut grooves 17 and 19 of the small diameter cylindrical portion 1 and the large diameter cylindrical portion 2 when projected from the axial direction. The position is shifted. Therefore, even if a twig or wire rod-like object enters the inside along the axial direction from the kerfs 17 and 19, the tip thereof is easy to come into contact with the intrusion prevention piece 15 and it is difficult to enter as it is. The protective function to prevent the intrusion of sticks is further improved.

  Since the rear ends of the kerfs 17 and 19 provided between the tongue pieces 18 and 20 reach the inner peripheral surface 5a of the small-diameter cylindrical portion 1 and the large-diameter cylindrical portion 2, the arrester cover A during raining Even if rainwater enters the inside, it is easily discharged from the rear ends of the kerfs 17 and 19. Further, the intrusion prevention piece 15 is also provided with a notch 16 so that the rainwater discharge function can be exhibited. Therefore, the risk of a short-circuit accident caused by the accumulation of rainwater is also avoided.

  In the present invention, the case where the arrester cover A is attached to the horizontally disposed arrester 36 has been described. However, for example, an arrester (not shown) vertically installed on the upper surface of the arm metal 31 is used. Of course, the arrester cover A according to the present invention can be applied.

The perspective view of the arrester cover which concerns on this invention. The perspective view of the open state. The top view which shows the arrester site | part on a utility pole. The enlarged side view of the state which attached the arrester cover to the arrester. FIG. XX sectional drawing of FIG. FIG. 6 is a cross-sectional view taken along line YY in FIG. 5. FIG. 6 is a sectional view taken along line ZZ in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small diameter cylinder part 2 Large diameter cylinder part 3 Opening 4 Opening 8 Detaching part 9 Collar piece 10 Engagement claw 11 Engagement strip 12 Engagement hole 13 Covering plate 14 Covering plate 15 Intrusion prevention piece 16 Notch 17 Cut groove 18 Tongue shape Piece 19 Groove 20 Tongue piece A Arrester cover 36a Arrester body 38 Cap body

Claims (5)

A small-diameter cylindrical portion that is attached to the cap body that covers the charging portion that protrudes from the arrester main body, and a large-diameter cylindrical portion that communicates with the small-diameter cylindrical portion on the same axis and is attached to the arrester main body. An arrester cover that has one side edge parallel to the axis as a hinge part and the other side edge separated, and the separation part can be freely opened and closed around the hinge part,
A hook piece is provided on each side of the separation part, an engagement band piece in which a plurality of engagement claws are arranged on either one of the hook pieces is projected, and the engagement band piece is provided on the other hook piece. By opening an engagement hole that can be inserted and engage with any one of the engagement claws, the engagement band piece is inserted into the engagement hole, and the engagement position of the engagement claw is changed, so that the separation is performed. Arrester cover characterized in that the interval between the parts can be adjusted freely.   A rod-like object such as a twig or wire that the bird carries for nesting with the inner peripheral edge abutting the outer peripheral surface of the cap body along the inner peripheral surface between the small diameter cylindrical portion and the large diameter cylindrical portion. The arrester cover according to claim 1, further comprising an intrusion prevention piece that prevents intrusion of the battery into the charging part.   Along the inner peripheral edge of each opening on the outer end surface in the axial direction of the small diameter cylindrical portion and the large diameter cylindrical portion, the cap body and the cap body The arrester cover according to claim 1 or 2, wherein a plurality of tongue-like pieces that abut on the outer peripheral surface of the arrester body are arranged.   The intrusion prevention piece is continuously provided in an annular shape and is provided with a plurality of notches spaced along a peripheral edge of the intrusion piece. When projected from the axial direction, each notch has a small diameter and a large diameter. The arrester cover according to claim 3, wherein the position is shifted from each cut groove with the cylindrical portion.   The arrester cover according to claim 3 or 4, wherein a back end portion of a kerf provided between each of the tongue-shaped pieces reaches an inner surface of a peripheral wall of the small diameter cylindrical portion and the large diameter cylindrical portion.

Images