JP7108441B2 - catenary protection cover - Google Patents

Description

The present invention consists of a pair of split bodies that are divided into halves to be attached to a catenary line on an overhead contact line. It relates to an overhead line protection cover.

Conventionally, it consists of a pair of divided bodies each having a flange on one end of a cylindrical part and a fitting projection projecting in the radial direction on the other end. There is also a suspension wire protection cover which is configured in a spool shape by alternately engaging both split bodies, and is mounted around the suspension wire to hook a hanger ear or the like on the cylindrical portion. The divided body has convex fixing portions projecting in the axial direction from the flange portion and the fitting convex portion and adjacent to each other in the direction perpendicular to the axis. They are secured to each other by passing the described dowel pins therethrough. The cotter pin is inserted through the pin hole, and the exposed tip portion is bent along the side surface of the convex fixing portion to prevent it from coming off.
The stop pin disclosed in Patent Document 1 is composed of an elastically deformable metal wire, and has a bent portion at an intermediate portion for inserting while bending so as to press the inner peripheral surface of the pin hole of the divided body, and a bent portion at one end. When the tip folded inward is exposed from the pin hole on the outlet side, the return deformation of the bent portion causes the release engagement recess that engages the outlet side edge of the pin hole and the other end to fold back inside the bend. , and a clip portion for receiving from the inner peripheral surface of the pin hole to the side surface of the fixing portion. This stop pin is prevented from coming off by inserting it into the pin hole and engaging with the edge of the pin hole on the outlet side, and the tip of the coming off engagement recess is directed toward the opening of the pin hole of the fixing portion along the edge. When pushed in the direction perpendicular to the axis, the bent portion is elastically deformed, the tip drops into the opening, disengages, and the stop pin is pulled out.

JP 2014-189163 A

In the former of the above conventional overhead wire protection covers, after inserting the split pin, the split pin is opened in two and bent to prevent it from coming off. It becomes even more difficult to perform detailed operations with your fingertips while wearing them. In addition, when removing, it is necessary to straighten the bent split pin and then pull it out with a tool such as pliers.
In the latter, the shape of the stop pin has a small bending width in the longitudinal direction due to the bending portion, and the stop pin is inserted into a small pin hole, so there is a difficulty in fine manipulation with the fingertips while wearing work gloves. . In particular, the attachment and detachment work of the suspension wire protection cover is high place work at the height position of the contact wire, and is often done at night, and it is desired that the attachment and detachment operation can be performed more easily. In addition, the divisions of the catenary protection cover are separated from each other, and the stop pin, which is small in size compared to the divisions, is easy to lose. has a difficulty.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a catenary wire protection cover which is easy to handle and which can be easily locked and unlocked with respect to a pair of assembled split bodies.

In the present invention, the semi-cylindrical portion 3 is divided into two along the axial direction, the flange portion 4 is provided at one end of the semi-cylindrical portion 3, and the other end radially protrudes and is fitted into the fitting concave portion 8 of the flange portion 4. A pair of divided bodies 2, 2 each provided with a possible fitting convex portion 5 are alternately engaged in the axial direction of the semi-cylindrical portion 3 to constitute a suspension wire protection cover assembled around the suspension wire in a spool shape. . A first fixing portion 9 and a second fixing portion 10 are protrudingly provided on the outer surfaces of the flange portion 4 and the fitting convex portion 5, and these fixing portions 9 and 10 are engaged with a stopper 11 to separate the two divided bodies. prevent The first fixing portion 9 is provided with a guide hole 9a that opens in a direction aligned with the second fixing portion 10 and allows the stopper 11 to pass therethrough. The second fixing portion 10 includes an engagement recess 10a into which the stopper 11 enters to prevent relative movement of the flange portion 4 and the fitting protrusion 5 in the axial direction. The stopper 11 is elastically contracted and deformed to pass through the guide hole 9a, which is narrower than the original shape. , a locking projection 11d projecting sideways for entering the engaging recess 10a of the second fixing portion 10 to fix the flange portion 4 and the fitting projection portion 5. As shown in FIG.

In the present invention, when the pair of divided bodies are assembled and inserted into the guide holes of the first fixing part, the stoppers enter the engaging recesses of the second fixing part, and the first fixing part and the second fixing part are separated. Since the split bodies are connected via the stoppers and the stoppers are retained, the split bodies are fixed to each other and can be easily attached to the suspension wire. The coupling between the first fixing part and the second fixing part is released by detaching from the engaging recess of the part, so that the divided body can be easily removed. It can be easily put on and taken off even while wearing work gloves.
If the stopper is held on the first fixing portion by the holding projection, it is integrated with the divided body without being separated, which is convenient in terms of management such as carrying and storage.
Since the state display portion is positioned inside the guide hole at the locked position of the stopper and cannot be visually observed, it is possible to easily distinguish between the locked state and the unlocked state.

1 is a perspective view of a catenary wire protection cover according to the present invention; FIG. FIG. 2 is a front view of the catenary wire protection cover of FIG. 1; FIG. 2 is a rear view of the catenary wire protection cover of FIG. 1; FIG. 2 is a plan view of the catenary wire protection cover of FIG. 1; FIG. 2 is a bottom view of the catenary wire protection cover of FIG. 1; FIG. 2 is a right side view of the catenary wire protection cover of FIG. 1; FIG. 2 is a left side view of the overhead wire protection cover of FIG. 1; FIG. 2 is an exploded perspective view of the catenary wire protection cover of FIG. 1; FIG. 2 is a partially enlarged perspective view of the overhead wire protection cover of FIG. 1; It is a front view of the catenary wire protection cover of FIG. 1, (A) shows the state where the stopper is removed, (B) shows the state where the stopper is at the holding position, and (C) shows the state where the stopper is at the locked position.

A first embodiment of the present invention will be described with reference to the drawings.
1 to 7, the catenary wire protection cover 1 has a spool shape with flanges on both ends of a cylindrical portion. As shown in FIG. 8, the catenary wire protection cover 1 has a cylindrical portion that is divided into two along the axial direction, and a pair of divided bodies 2, 2 made of synthetic resin each provided with a collar portion 4 at one end thereof. are arranged at both ends.

The divided body 2 consists of a semi-cylindrical portion 3 obtained by dividing the cylindrical portion of the suspension wire protection cover 1 into two in the axial direction, a flange portion 4 extending radially from one end of the semi-cylindrical portion 3, and the other end of the semi-cylindrical portion 3. and a fitting convex portion 5 extending in the direction perpendicular to the axis. The side edges of the semi-cylindrical portion 3 are provided with axial grooves 6 and ridges 7 which can be slidably engaged when they are assembled together. The collar portion 4 is provided with a fitting concave portion 8 in which the fitting convex portion 5 is fitted in the central portion on the opposite side of the portion where the semi-cylindrical portions 3 continue. The semi-cylindrical portion 3 has an arcuate projection 3a against which the other collar portion 4 abuts and is positioned.

As shown in FIG. 9, the outer surfaces of the flange portion 4 and the fitting convex portion 5 are provided with a first fixing portion 9 and a second fixing portion 10 projecting outward. be done. The first fixing portion 9 is provided with a rectangular through-hole 9 a extending in the direction perpendicular to the axis and opening so as to face the second fixing portion 10 . The second fixing portion 10 is composed of a pair of parallel rectangular rods extending in the axial direction and arranged in the orthogonal direction. A side surface of the second fixing portion 10 close to the first fixing portion 9 is provided with an engaging concave portion 10a that protrudes 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 both upper and lower sides of the front end surface of the base portion 11a, extends rearward along the upper and lower side surfaces of the base portion 11a, and faces the base portion 11a. and a pair of legs 11b. The plate-like leg portions 11b can be elastically contracted and deformed in the width direction so that the front ends and the rear ends of the plate-like legs 11b are brought closer to each other. . On the upper and lower outer surfaces of the front end and intermediate portion of the leg portion 11b, after passing through the through hole 9a of the first fixing portion 9, the leg portion 11b expands by returning to its original shape and is retained at the opening edge on the exit side of the through hole 9a. It has a holding projection 11c and a locking projection 11d. Both projections 11c and 11d are slanted on the front side in the insertion direction for smooth insertion into the through-hole 9a, and the rear sides form a substantially right angle so as to be caught by the opening edge of the through-hole 9a. The holding projection 11c holds the stopper 11 on the first fixing portion 9 and is integrally assembled with the divided body 2 to prevent loss. The locking protrusion 11d holds the stopper 11 in a state in which the stopper 11 is pushed into the through hole 9a and the base portion 11a enters the engaging recess 10b of the second fixing portion 10. As shown in FIG. Both the front and back sides of the base 11a of the stopper 11 and the upper and lower outer sides of the leg 11b are provided with status display portions 11e at positions corresponding to the rear portions of the locking projections 11d, which are color-coded from other portions. The state display portion 11e is positioned within the through hole 9a and overlaps the first fixing portion 9 in a locked state in which the base portion 11a enters the engaging recess portion 10b of the second fixing portion 10 to prevent the stopper 11 from slipping off. becomes invisible due to Accordingly, the state display portion 11e distinguishes between the unlocked state in which the first fixing portion 9 is exposed and the locked state in which the first fixing portion 9 is overlapped.

In order to attach the suspension wire protection cover 1 to the suspension wire, the semi-cylindrical portions 3 of the pair of divided bodies 2, 2 are alternately arranged in the axial direction with the suspension wire sandwiched therebetween, and the grooves 6 and the ridges 7 are slidably engaged. Then, by fitting the fitting projection 5 into the fitting recess 8 of the flange 4, the assembly is assembled around the suspension wire. The stopper 11 is inserted into the through hole 9a of the fixing portion 9 in the assembled state of the divided bodies 2,2. When the rear ends of both legs 11b of the stopper 11 are pinched laterally and the tip is pushed into the through hole 9a, the tip is contracted and deformed in the width direction and can be inserted into the through hole 9a. When the holding projection 11c comes out of the through hole 9a, the stopper 11 returns to its original shape and expands from the outlet side of the through hole 9a, so that it is caught by the edge and is held by the fixing portion 9. As shown in FIG. Further, when the stopper 11 is pushed into the through hole 9a, it is contracted and deformed in the width direction so that the space between the legs 11b, 11b is narrowed, and the locking projection 11d can pass through the through hole 9a. Since it returns and expands from the opening of the through hole 9a, it is caught by the edge and is prevented from coming off. In this state, the base portion 11a of the stopper 11 enters the engagement recess 10a of the second fixing portion 10 and abuts against the second fixing portion 10, thereby locking the assembled state of the divided bodies 2,2. At this time, the state display portion 11e is positioned inside the through-hole 9a and is hidden by the first fixing portion 9, making it invisible, so that the locked state can be confirmed.
On the other hand, in order to remove the trolley wire protection cover 1 from the trolley wire, the rear ends of the legs 11b of the stopper 11 are pinched laterally and pulled out from the through hole 9a while being contracted and deformed in the width direction, so that the locking projection 11d is on the entrance side. When the stopper 11 is pulled out of the opening, the stopper 11 is released from the engaging recess 10a of the second fixing portion 10, so that the divided bodies 2, 2 can be slid in the axial direction and separated. If the stopper 11 is attached to the fixing portion 9 of one split body 2, it can be prevented from being lost.

REFERENCE SIGNS LIST 1 overhead wire protection cover 2 divided body 3 semi-cylindrical portion 3a arc-shaped projection 4 collar portion 5 fitting projection 6 groove 7 ridge 8 fitting recess 9 first fixing portion 9a through hole 10 second fixing portion 10a engaging recess 11 Stopper 11a Base 11b Leg 11c Holding projection 11d Locking projection 11e State display

Claims (2)

A semi-cylindrical part divided into two parts along the axial direction, a flange part at one end of the semi-cylindrical part, and a fitting convex part projecting radially from the other end and capable of being fitted into a fitting concave part provided in the flange part. It consists of a pair of divided bodies provided respectively, and by engaging both divided bodies alternately in the axial direction of the semi-cylindrical part, it is assembled in a spool shape around the suspension wire, and from the outer surface of the collar part and the fitting convex part A suspension wire protection cover in which both divided bodies are fixed by stoppers engaging the protruding first fixing part and second fixing part,
The first fixing portion has a guide hole that opens in a direction aligned with the second fixing portion and allows the stopper to pass therethrough,
The second fixing portion has an engaging recess that prevents relative movement of the flange portion and the fitting protrusion in the axial direction when the stopper enters through the guide hole,
The stopper includes a base portion that enters the engagement recess of the second fixing portion;
a pair of opposing legs that extend forward from both sides of the distal end in the insertion direction of the base, are folded back sideways, and extend to the rear with the base in between;
These leg portions are elastically contracted and deformed to pass through the guide hole, which is narrower than the original shape , together with the base portion. a locking protrusion that protrudes laterally from the middle of the leg so as to
A retaining projection that protrudes sideways from the middle of the leg so as to engage with an opening edge on the exit side of the guide hole at a position separated from the second fixing portion in a state of penetrating the guide hole to prevent it from coming off. A catenary protection cover characterized by comprising: The stopper is provided with a state display portion which is positioned inside the guide hole of the first fixing portion and becomes invisible at the locked position where the stopper has entered the engagement recess of the second fixing portion. Item 1. A catenary wire protection cover according to item 1.

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