JP2019043537A - Trolley wire protective covering - Google Patents

Abstract

To provide a trolley wire protective covering which is easy to lock and unlock with respect to a pair of assembled split bodies, excellent in operability, and convenient to handle.SOLUTION: A trolley wire protective covering is configured in a bobbin shape around a trolley wire by engaging a pair of split bodies 2, 2, respectively provided with a fitting concave part 8 and a fitting convex part 5, with a flange part 4 of a semi-cylindrical part 3 alternately in an axial direction of the semi-cylindrical part 3A. A first fixed part 9 projecting from an outside surface of the flange part 4 is provided with a guide hole 9a whose outlet is on a second fixed part 10 side. The second fixed part 10 projecting from an outside surface of the fitting convex part 5 is provided with an engaging concave part 10a for preventing relative movement in the axial direction by a stopper 11 entering thereto. The stopper 11 can be elastically contracted and deformed, penetrates the guide hole 9a with a narrow width, returns to its original shape when a tip thereof comes off, thereby preventing a locking projection 11d from coming off from the guide hole 9a, and locking the assembly of the split bodies 2, 2 at this position. In this state, a state display unit 11e is hidden by the first fixed part 9 and becomes invisible.SELECTED DRAWING: Figure 8

Description

  The present invention is constituted by a pair of split members in half for attaching to a suspension wire in a train line, and the suspension wires are opposed to each other so as to sandwich the suspension wire from both sides, and the segments are engaged with each other and fixed around the suspension wire. It relates to an overhead wire protective cover.

Conventionally, it comprises a pair of divided bodies provided with a collar at one end of the cylindrical portion and a fitting projection projecting in the radial direction at the other end, and is provided with a fitting recess in which the fitting convex can be fitted in the collar There is a hanging wire protection cover which is formed in a thread-like shape by alternately engaging the two divided bodies, and which is mounted around a hanging wire to hold a hanger ear or the like on the cylindrical portion. The divided body includes a collar and a convex fixing portion adjacent in a direction perpendicular to the axial line protruding in the axial direction from the fitting convex portion, and bifurcated split pins in pin holes of these convex fixing portions, Patent Document 1 By passing through the described stop pins, they are fixed to one another. The split pin penetrates the pin hole and bends the exposed tip portion along the side surface of the convex fixing portion to prevent it from coming off.
The locking pin of Patent Document 1 is made of an elastically deformable metal wire, and a bending portion for inserting while bending so as to press the inner peripheral surface of the pin hole of the divided body in the middle portion, and bent at one end portion When the tip folded back to the inside is exposed from the pin hole on the outlet side, the return deformation of the bent portion causes the release engaging recess to be engaged with the outlet side edge of the pin hole and the other end folds in the inside of the bend. And a clip portion for receiving from the inner circumferential surface of the pin hole to the side surface of the fixing portion. The lock pin is inserted into the pin hole and engaged with the edge of the pin hole on the outlet side to prevent it from coming out, and the tip of the engagement recess is directed toward the opening of the pin hole of the fixing portion along the edge When pressed in the direction orthogonal to the axis, the bent portion elastically deforms and the tip falls into the opening to disengage and disengage the locking pin.

JP 2014-189163 A

In the former of the conventional hanging wire protective covers described above, after inserting the split pin, the split pin is bifurcated and bent to prevent detachment by bending, but the operation while preventing dropout from the pin hole is troublesome and the working gloves It becomes more difficult to perform detailed operations with the fingertip as it is worn. In addition, at the time of removal work, it is necessary to straighten the bent split pin and then to pull it out with a tool such as pliers.
In the latter case, the shape of the locking pin has a small width of bending due to the bending portion in the longitudinal direction, and the locking pin is inserted into the small pin hole, so there is a problem in the fine operation with the fingertip while wearing the working glove . In particular, the attachment / detachment work of the hanging wire protection cover is often performed at night while the attachment / detachment work of the hanging wire protection cover is performed at a height position of the height of the trolley wire. In addition, since the divided bodies of the suspension wire protective cover are separated from each other and the small-sized stop pin is easily lost compared with the divided bodies, it is troublesome in handling of operation and state confirmation in management such as storage and carrying. There is a problem with
Then, an object of the present invention is to provide a hanging wire protection cover which has a good operability and can be easily operated to be locked and released with respect to a pair of assembled divided members, which is convenient for handling.

  In the present invention, the half cylinder 3 divided into two along the axial direction, the flange 4 at one end of the half cylinder 3 and the other end radially projecting at the other end are fitted into the fitting recess 8 of the flange 4 A hanging wire protection cover is assembled by threading a pair of divided bodies 2 and 2 each having a possible fitting projection 5 in a shaft-like manner by alternately engaging a pair of divided bodies 2 and 2 in the axial direction of the semicylindrical portion 3 . The first fixing portion 9 and the second fixing portion 10 are provided on the outer surface of the collar portion 4 and the fitting convex portion 5, and the fixing portions 9 and 10 are engaged by the stopper 11 to separate the two divided bodies To stop. The first fixing portion 9 is provided with a guide hole 9 a which is opened in the direction in which the first fixing portion 9 is aligned with the second fixing portion 10 and through which the stopper 11 is inserted. The second fixing portion 10 includes an engaging recess 10 a that prevents relative movement between the collar 4 and the fitting protrusion 5 in the axial direction by the stopper 11 entering. The stopper 11 is elastically reduced and deformed to penetrate through the guide hole 9a having a narrower width than the original shape, and when the tip end comes out, returns to the original shape and engages with the opening edge on the outlet side of the guide hole 9a A locking projection 11d is provided that protrudes laterally and enters the engagement recess 10a of the second fixing portion 10 and fixes the collar 4 and the fitting projection 5 to each other.

In the present invention, when the pair of divided bodies is assembled and inserted into the guide hole of the first fixing portion, the stopper enters the engagement recess of the second fixing portion, and the first fixing portion and the second fixing portion Since the stoppers are coupled together via the stoppers and the stoppers are prevented from coming off, the divided bodies are fixed to each other and can be easily attached to the hanging wire, and the stoppers are pinched in the width direction to be elastically deformed and pulled back; The connection between the first fixed part and the second fixed part is released from the engagement recess of the part, and the divided body can be easily removed. As a result, the work of attaching and detaching the hanging wire protective cover It can be easily removed and installed while wearing work gloves at the place.
If the stopper is held at the first fixing portion by the holding projection, it is convenient for management such as carrying and storage without being separated from the divided body.
Since the state display unit is located inside the guide hole at the lock position of the stopper and can not be visually recognized, the locked state and the non-locked state can be easily determined.

It is a perspective view of the hanging wire protection cover concerning the present invention. It is a front view of the hanging wire protection cover of FIG. It is a rear view of the hanging wire protection cover of FIG. It is a top view of the hanging wire protection cover of FIG. It is a bottom view of the hanging wire protection cover of FIG. It is a right view of the hanging wire protection cover of FIG. It is a left view of the hanging wire protection cover of FIG. It is a disassembled perspective view of the hanging wire protection cover of FIG. It is a partially expanded perspective view of the hanging wire protection cover of FIG. It is a front view of the hanging wire protection cover of FIG. 1, (A) shows a state in which the stopper is removed, (B) shows a state in which the stopper is in the holding position, and (C) shows a state in which the stopper is in the locking position.

A first embodiment of the present invention will be described with reference to the drawings.
In FIG. 1 to FIG. 7, the hanging wire protection cover 1 has a thread-like shape having a collar at both ends of a cylindrical portion. As shown in FIG. 8, in the hanging wire protection cover 1, the cylindrical portion is divided into two along the axial direction, and the collar 4 is provided with a pair of divided members 2 and 2 made of synthetic resin having the collar 4 at one end. Are alternately assembled so that they are arranged at both ends.

  The divided body 2 includes a semi-cylindrical portion 3 obtained by dividing the cylindrical portion of the hanging wire protection cover 1 in the axial direction, a flange portion 4 radially extending to one end of the semi-cylindrical portion 3, and the other end of the semi-cylindrical portion 3 And a fitting protrusion 5 extending in a direction perpendicular to the axis. The side edge portions of the semi-cylindrical portions 3 are provided with axial grooves 6 and protrusions 7 which can be slidably engaged when assembling each other. The collar portion 4 is provided with a fitting concave portion 8 in which the fitting convex portion 5 fits in a central portion on the opposite side of a portion where the semi-cylindrical portion 3 continues. The semi-cylindrical portion 3 has an arc-shaped projection 3 a which the other flange 4 abuts and positions.

  As shown in FIG. 9, the outer side surfaces of the flange 4 and the fitting convex portion 5 are provided with a first fixing portion 9 and a second fixing portion 10 protruding outward, and these are coupled via the stopper 11 Be done. The first fixing portion 9 is provided with a rectangular through hole 9 a in a direction orthogonal to the axis line which is opened to face the second fixing portion 10. The second fixed portion 10 is formed of a pair of parallel rectangular rods aligned in an orthogonal direction extending in the axial direction. The side surface near the first fixing portion 9 of the second fixing portion 10 is provided with an engagement recess 10 a for projecting the upper portion.

  As shown in FIG. 10, the stopper 11 is made of an elastic synthetic resin material having a substantially M shape in plan view. The stopper 11 extends forward from the upper and lower sides of the rectangular base portion 11a at the central portion and the top end face of the base portion 11a and is folded back and extends backward along the upper and lower side surfaces of the base portion 11a across the base portion 11a And a pair of legs 11b. The plate-like legs 11b can be elastically reduced and deformed in the width direction so that the front ends and the rear ends come close to each other, and thereby, can be inserted into the through holes 9a having a narrower width than the interval between the legs 11b. . When passing through the through hole 9a of the first fixing portion 9, the front end portion and the middle outer surface of the leg portion 11b are expanded by return to the original shape and are retained at the outlet edge of the through hole 9a. It has a holding projection 11c and a locking projection 11d. Both projections 11c and 11d are inclined in order to facilitate insertion into the through hole 9a in the insertion direction front side, and are substantially at right angles such that the rear side is caught on the opening edge of the through hole 9a. The holding projection 11c can prevent the loss by holding the stopper 11 in the first fixing portion 9 and assembling it integrally with the divided body 2. The locking projection 11d pushes the stopper 11 into the through hole 9a to prevent the stopper 11 from coming off in a state in which the base 11a enters into the engagement recess 10b of the second fixed portion 10. The front and back sides of the base portion 11a of the stopper 11 and the upper and lower outer surfaces of the leg portion 11b are provided with state indication portions 11e color-coded from other parts at positions corresponding to the rear portions of the locking projections 11d. The state display portion 11e is positioned in the through hole 9a in a locked state where the base 11a enters into the engagement recess 10b of the second fixing portion 10 and the stopper 11 is prevented from coming off, and overlaps with the first fixing portion 9. Becomes invisible. Accordingly, the state display unit 11 e distinguishes between the unlocked state exposed from the first fixing portion 9 and the locked state overlapping the first fixing portion 9.

In order to mount the suspension wire protection cover 1 on the suspension wire, the half-cylindrical portions 3 of the pair of divided members 2 are arranged alternately in the axial direction with the suspension wire interposed therebetween, and the groove 6 and the ridge 7 are engaged by sliding. When the fitting convex portion 5 is fitted in the fitting concave portion 8 of the collar portion 4, it is assembled around the hanging wire. The stopper 11 is inserted into the through hole 9 a of the fixed portion 9 in the assembled state of the divided bodies 2, 2. If the rear end portions of both leg portions 11b of the stopper 11 are pinched sideways and the front end portion is pushed into the through hole 9a, the front end portion can be reduced and deformed in the width direction and inserted into the through hole 9a. When the holding projection 11 c comes out of the through hole 9 a, the stopper 11 returns to the original shape and expands from the opening on the outlet side of the through hole 9 a, and therefore the stopper 11 is caught on the edge and held by the fixing portion 9. When the stopper 11 is further pushed into the through hole 9a, it is deformed in the width direction so that the space between the legs 11b and 11b is narrowed, and the lock projection 11d can pass through the through hole 9a. Since it returns and spreads from the opening of the through hole 9a, it is caught on the edge and prevented. In this state, the base 11a of the stopper 11 enters the engagement recess 10a of the second fixed portion 10 and strikes the second fixed portion 10, thereby locking the assembled state of the divided bodies 2 and 2. At this time, the state display part 11e is located inside the through hole 9a and hidden by the first fixing part 9 so that it can not be visually recognized and the locked state can be confirmed.
On the other hand, in order to remove the hanging wire protection cover 1 from the hanging wire, the rear end portions of both leg portions 11b of the stopper 11 are pinched sideways and pulled out from the through hole 9a while reducing and deforming in the width direction. Since the stopper 11 separates from the engagement recess 10 a of the second fixed portion 10 when it comes out of the opening, the split bodies 2 and 2 can be slid in the axial direction and separated. When the stopper 11 is assembled to the fixing portion 9 of one of the divided bodies 2, the stopper 11 is prevented from being lost.

DESCRIPTION OF SYMBOLS 1 Suspension wire protection cover 2 Division body 3 Semi-cylindrical part 3a Arc-shaped protrusion 4 Flange part 5 Fitting convex part 6 Groove 7 Protrusion 8 Fitting concave part 9 1st fixing | fixed part 9a Through hole 10 2nd fixing | fixed part 10a engaging concave 11 Stopper 11a Base 11b Leg 11c Holding projection 11d Locking projection 11e Status display

Claims (4)

A semi-cylindrical portion divided into two along the axial direction, a collar portion at one end of the semi-cylindrical portion, and a fitting convex portion radially projecting at the other end and engageable with a fitting concave portion at the collar portion Consists of a pair of divided bodies respectively provided, and by engaging both divided bodies alternately in the axial direction of the semi-cylindrical part, it is assembled in a thread winding around the hanging wire, and from the outer surface of the collar and the fitting convex part A hanging wire protection cover in which a stopper is engaged with a protruding first fixing portion and a second fixing portion to fix both divided bodies,
The first fixing portion is provided with a guide hole which is opened in the direction in which the first fixing portion is aligned with the second fixing portion and through which the stopper is inserted.
The second fixing portion includes an engagement recess that prevents relative movement between the collar portion and the fitting protrusion in the axial direction by the approach of the stopper through the guide hole.
The stopper can be elastically shrunk and deformed to penetrate the guide hole having a narrower width than the original shape, return to the original shape when the tip end comes off, and engage with the opening edge on the outlet side of the guide hole With a locking projection that projects into the
A hanging wire characterized in that the stopper which penetrates the first fixing portion and engages with the second fixing portion blocks relative movement between the flange portion and the fitting convex portion to fix the two divided bodies. Protective cover.   The stopper further includes a laterally protruding holding projection which engages with the opening edge on the outlet side of the guide hole at a position separated from the second fixing portion in a state of penetrating the guide hole and preventing the opening edge from coming off. The hanging wire protection cover according to claim 1, characterized in that The stopper is a base that enters an engagement recess of the second fixed portion.
The base portion extends forward from both sides in the insertion direction front end portion and is folded back to the side, extends to the rear with the base portion interposed, and comprises a pair of opposed leg portions including the locking projection and the holding projection in the middle The hanging wire protection cover according to claim 2, characterized in that:   The stopper is provided with a state display portion which is positioned inside the guide hole of the first fixing portion at the lock position which has entered the engagement concave portion of the second fixing portion and which becomes invisible. The hanging wire protective cover according to any one of Items 1 to 3.

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