KR102422471B1 - Cable terminal box device for electric railways - Google Patents

Abstract

The present invention relates to a cable terminal box device for electric railways, which allows a coupling ring to be screw-coupled to a terminal installed in a terminal box to enable a cable to be connected to the terminal, and includes a loosening prevention means for preventing the coupling ring from being loosened to enable a connector not to be loosened from the terminal of the terminal box even when vibration generated in a driving process of an electric railway vehicle acts on the connector in the direction of being loosened with respect to the terminal of the terminal box, so that the connection of a jumper cable is maintained in a connected state without being disconnected, and the connection of electricity and communication between preceding and succeeding electric railway vehicles can always be made smoothly.

Description

Electric railway cable terminal box device {Cable terminal box device for electric railways}

The present invention relates to an electric railway cable terminal box device among technologies in the field of railway electrical technology, and more specifically, to a connector in a terminal box even if vibrations generated in the running process of an electric rail vehicle act in the direction of loosening the terminal of the terminal box on the connector. It relates to a terminal box device for an electric railroad cable that is not released from the terminal so that the connection of the jumper cable is maintained in a connected state without being released, and that the connection of electricity and communication between the line and the following electric railroad vehicle is always smoothly made. .

In general, an electric railway vehicle is operated in one formation by connecting a plurality of vehicles, so a mechanical connection device is also required to connect the vehicles necessary for operation to each other, but the connection of various communication lines and electric cables is required.

The conventional jumper cable used to connect the communication line and the electric cable of the electric railway vehicle is the Republic of Korea Utility Model Registration No. 20-0311029 (July 2003.04.07) "Jumper cable for the railway vehicle" is used to connect the terminal box provided in the vehicle. The connector is connected to both ends of the jumper cable for this purpose, and a method of tightening using a hose band is used to connect the adapter to both ends of the cable. Disclosed is a technology that can significantly reduce the weight of the finished product of the jumper cable without being damaged, and enables replacement and repair of wires in case of breakage or damage.

However, the Republic of Korea Utility Model Registration No. 20-0311029 uses hose bands at both ends of the cable to connect the adapter, and the adapter and connector are coupled by screw fastening, so the operation is cumbersome and difficult, and the metal hose In the process of fixing the adapter and the cable using the band, the hose band digs into the adapter’s paintwork, causing scratches on the adapter. These scratches easily cause rust during use, shortening the adapter’s lifespan, and making the adapter and connector simply Since they are coupled by screwing, there is a problem that the coupling of the adapter connector can be easily released by external shock and severe vibration.

As a prior art that solves these problems, Republic of Korea Registered Utility Model No. 20-0462277 (2012.08.29.) "Jumper cable structure for railroad vehicles" connects communication lines and electric cables between vehicles of railroad vehicles in which multiple vehicles are connected and operated. A separate clamp for fixing the adapter and the cable by compressing and fixing the inserted cable so that the cable fixing part into which the cable is inserted and fixed at one end of the adapter installed at the free end of the cable used for this purpose becomes narrower toward the inside. Since the adapter and cable are fixed without the need for using an adapter, installation is simplified, and it is possible to prevent in advance that the adapter and the cable are separated from the adapter and the cable by pressing the fixing part of the adapter and the cable to loosen the fixation. Disclosed is a technology that enables long-term use without loosening even in severe vibrations or shocks because the fixed connector is adhesively fixed by fixing adhesive curing liquid when screwing, and manufacturing is simplified.

However, the adapter and connector are hardened with a fixed adhesive hardener to prevent loosening of the screws of the joint. As it may not be strong enough to be there, the fixed adhesive cured film is torn or ruptured as time elapses when exposed to vibration, and the screw loosening prevention function is lost, resulting in screw loosening, and the adapter and connector may be separated.

Republic of Korea Registered Utility Model No. 20-0069562 (December 29, 1992) "Terminal block for railroad vehicle jumper socket" Republic of Korea Registered Utility Model No. 20-0311029 (2003.04.07.) "Jumper cable for railroad vehicles" Republic of Korea Registered Utility Model No. 20-0462277 (2012.08.29.) "Jumper cable structure for railroad vehicles"

Therefore, it is an object of the present invention to ensure that the connector is not released from the terminal of the terminal box even if the vibration generated during the running process of the electric rail vehicle acts on the connector in the direction of unwinding from the terminal of the terminal box, so that the connection of the jumper cable is not released but connected. An object of the present invention is to provide an electric railway cable terminal box device so that the connection, such as electricity and communication, between electric railway vehicles maintained and preceding and following is always made smoothly.

The present invention provides a terminal box on both sides installed in an electric railway vehicle in order to achieve the above object; a plurality of cables disposed between the terminal boxes on both sides and in which the conductors are exposed by peeling the insulating coating from both ends; A plurality of conductors having a cable insertion groove into which the conductor of the cable is inserted is formed at one end and connector pins are formed at the other end, a connector insulator surrounding the plurality of conductors, a connector casing surrounding the connector insulator, and the connector casing to be rotatable a connector having a coupling ring coupled thereto; A terminal having a plurality of terminal sleeves protruding from both terminal boxes and having connector pin holes into which connector pins are inserted at the protruding ends, a terminal insulator surrounding the plurality of terminal sleeves, and a terminal casing surrounding the terminal insulator, the cable comprising: By inserting a conductor into the cable insertion groove and pressing the outer periphery of the portion where the cable insertion groove is formed, the conductor and the conductor are compressed and firmly coupled, an outward flange is formed on the outer periphery of the connector casing, An inward flange that can be caught on the outward flange is formed, a male threaded portion is formed on the outer circumferential surface of the terminal casing, and a female threaded portion fastened to the male screwed portion is formed on the inner circumferential surface of the coupling ring. It further includes means, wherein the anti-loosening means includes a rotation preventing surface formed parallel to a part of the outer circumferential surface of the coupling ring, a locking surface formed in the coupling ring to be positioned on the terminal box side of the rotation preventing surface, and an inner surface that matches the rotation preventing surface A reverse U-shaped anti-loosening piece that touches and one side is caught on the engaging surface, a L-shaped rotating lever integrally formed on the upper end of the anti-loosening piece, a hinge hole formed horizontally at the tip of the rotating lever, and a hinge fixed on the upper surface of the terminal box A hinge piece having a ball, a hinge pin fitted into the hinge hole, a fixing pin hole formed perpendicular to the rotation lever, a fixing piece protruding from the vertical surface of the terminal box to form a fixing pin hole, and a fixing pin fitted into the fixing pin hole It provides an electric railway cable terminal box system, characterized in that it is configured.

According to the electric railway cable terminal box device of the present invention, the coupling ring is screwed to the terminal installed in the terminal box so that the cable is connected to the terminal and also includes a loosening preventing means for preventing the coupling ring from loosening. Even if the vibration generated during the running process of the connector acts on the connector in the direction of unwinding from the terminal of the terminal box, the connector does not come loose from the terminal of the terminal box, so the connection of the jumper cable is not released and remains connected, and the electric railway that follows Connections such as electricity and communication between vehicles can always be smoothly made.

1 to 6 show a preferred embodiment of the electric railway cable terminal box device according to the present invention,
1 is a perspective view of a terminal box device;
2 is an exploded perspective view of the terminal box device;
3 is a longitudinal cross-sectional view showing a state in which the connector and the cable are separated from the terminal;
4 is a longitudinal cross-sectional view showing a state in which a connector pin is inserted into a terminal;
5 is a longitudinal cross-sectional view showing a state in which the coupling ring is fastened to the terminal casing;
6 is a longitudinal cross-sectional view showing a state in which a connector coupled to a terminal is not released.

Hereinafter, an electric railway cable terminal box device according to the present invention will be described in detail according to a preferred embodiment illustrated in the accompanying drawings.

1 to 6 show a preferred embodiment of the electric railway cable terminal box device according to the present invention.

Both terminal boxes 10 installed in an electric rail vehicle (not shown) and; a plurality of cables 20 disposed between the both terminal boxes 10 and in which the insulation coating 22 is peeled off from both ends to expose the conductor 21; A cable insertion groove 31a into which the conductor 21 of the cable 20 is inserted is formed at one end and a connector pin 31b is formed at the other end of the plurality of conductors 31 and the plurality of conductors 31 a connector 30 having a connector insulator 32 , a connector casing 33 surrounding the connector insulator 32 , and a coupling ring 34 rotatably coupled to the connector casing 33 ; A plurality of inner wires (not shown) are connected inside the terminal box 10 on both sides, protruding from the terminal box 10 on both sides, and a plurality of terminals having connector pin holes 41a into which the connector pins 31b are inserted at the protruding ends. The terminal 40 includes a sleeve 41 , a terminal insulator 42 surrounding the plurality of terminal sleeves 41 , and a terminal casing 43 surrounding the terminal insulator 42 .

In the drawing, the terminal box 10 shown on the left is installed in the preceding electric rail vehicle, and the terminal box 10 shown on the right is installed in the following electric rail vehicle, and is installed symmetrically front and rear.

The terminal box 10 includes a box-shaped terminal box body 11 with an open side, and a door 12 installed on the side to be able to be opened and closed.

The terminal box body 11 is formed with a terminal installation hole 13 in which the terminal 40 is installed.

The cable 20 inserts the conductor 21 into the cable insertion groove 31a formed in the conductor 31 of the connector 30, and presses the outer periphery of the portion where the cable insertion groove 31a is formed. 21) and the conductor 31 may be compressed to be firmly coupled.

For crimping the conductor 21 and the conductor 31, a conventional wire crimping machine for crimping a sleeve-type connector to the conductor of the electric wire may be used.

The conductor 31, the connector insulator 32, and the connector casing 33 constituting the connector 30 are formed to be inclined downward, so that the cable 20 can naturally sag.

In the illustrated example, an example is given in which the conductor 31, the connector insulator 32, and the connector housing 33 are formed to be inclined at a 45 degree downward angle, and the downward inclination angle may be changed according to the distance between the terminal boxes 10 on both sides. .

An outward flange (33a) is formed on the outer periphery of the connector casing (33), and an inward flange (34a) that can be caught on the outward flange (33a) is formed on the inner periphery of the coupling ring (34), so that the coupling ring (34) is a connector It is configured not to be separated from the connector casing 33 while being able to rotate and move left and right with respect to the casing 33 .

A male screw portion 43a is formed on an outer peripheral surface of the terminal casing 43 of the terminal 40 , and a female screw portion 34b fastened to the male screw portion 43a is formed on an inner peripheral surface of the coupling ring 34 .

The coupling ring 34 is configured to be able to easily turn the coupling ring 34 using a hand or a tool by forming an anti-slip protrusion 34c on the outer circumferential surface.

The cable 20 may be protected by covering the flexible tube 23 . The flexible tube 23 may be a metal tube, a synthetic resin tube, or a composite material tube.

The flexible tube 23 is flexible by covering both ends on the connector insulator 32, covering the outer peripheral surface and the tightening band 24 over the outer peripheral surface of the connector casing 33, and tightening the bolt 24a and the nut 24b. The sex tube 23 may remain rigidly coupled to the connector 30 .

The tip of the connector pin 31b of the conductor 31 and the inlet of the connector pin hole 41a of the terminal sleeve 41 are filleted to facilitate the insertion of the connector pin 31b into the connector pin hole 41a. can make you lose

On the other hand, in order to prevent the coupling ring 34 from being loosened from the terminal casing 33, a loosening preventing means 50 is further included.

The anti-loosening means 50 is formed on the coupling ring 34 so as to be positioned on the terminal box 10 side of the anti-rotation surface 51 formed in parallel to a portion of the outer peripheral surface of the coupling ring 34 and the rotation preventing surface 51 . The locking surface 52 and the reverse U-shaped anti-loosening piece 53, the inner surface of which abuts against the anti-rotation surface 51, and one side of the inverted U-shaped anti-loosening piece 53 caught on the engaging surface 52, and the upper end of the anti-loosening piece 53 are integrated A hinge piece having a L-shaped pivot lever 54 formed of 55), a hinge pin 56 fitted into the hinge holes 54a and 55a, a fixing pin hole 54b formed perpendicular to the rotation lever 54, and a fixing pin hole protruding from the vertical surface of the terminal box 10 ( 57a) includes a fixing piece 57 formed therein, and a fixing pin 58 fitted to the fixing pin holes 54b and 57a.

The fixing pin 58 is inserted into the fixing pin holes 54b and 57a using a split pin, and by bending the ends to both sides, no matter how strong vibration is applied, the fixing pin 58 is inserted into the fixing pin holes 54b. , 57a).

Hereinafter, a process of connecting the cable 20 through the connector 30 to the terminal 40 provided in the terminal box 10 by the electric railway cable terminal box system according to the present invention will be described.

Since the electric railway cable terminal box system of the present invention is configured symmetrically, FIGS. 3 to 6 show only a half portion.

First, the cable 20 and the conductor 31 insert the conductor 21 into the cable insertion groove 31a, and press the outer periphery of the cable insertion groove 31a to be compressed and firmly coupled, and the conductor ( 31) and the cable 20 are embedded in the connector insulator 32, and the cable 20 is inserted into the flexible tube 23, and the flexible tube 23 is inserted into the cable 20 and the connector insulator 32. ), cover the tightening band 24 over the outer circumferential surface of the flexible tube 23 and the outer circumferential surface of the connector casing 33 and the tightening band 24, and tighten the bolt 24a and nut 24b. By doing so, the flexible tube 23 can be maintained firmly coupled to the connector 30 , and the coupling ring 34 is prepared with the connector casing 33 covered.

In addition, the fixing pin 58 is drawn out from the fixing pin holes 54b and 57a to free the rotation lever 54, and the loosening prevention piece 53 and the rotation lever 54 are rotated around the hinge pin 56 to make the terminal box. It is placed on the upper surface of 10 so as not to interfere with the coupling ring 34, and the coupling ring 34 is prepared in a state in which it is retracted from the terminal 40 (refer to FIG. 3).

The connector pin 31b of the conductor 31 of the connector 30 is inserted into the connector pin hole 41a of the terminal sleeve 41 (refer to FIG. 4).

The retracted coupling ring 34 is advanced toward the terminal 40 so that the female threaded portion 34b is engaged with the male threaded portion 43a of the terminal casing 43, and the coupling ring 34 is turned in the tightening direction in the tightening direction. The coupling ring 34 is fastened to the terminal casing 43 by the screw action of the (34b) and the male screw portion (43a).

At this time, the inward flange (34a) of the coupling ring (34) is caught by the outward flange (33a) of the connector casing (33), and according to the forward operation of the coupling ring (34), the connector casing (33) is coupled to the coupling ring (34). is pulled forward by (see FIG. 5).

Finally, by rotating the anti-loosening piece 53 and the rotation lever 54, the inner surface of the anti-loosening piece 53 abuts against the anti-rotation surface 51 formed on the outer circumferential surface of the coupling ring 34, as well as releasing The surface of the prevention piece 53 facing the terminal 40 is caught on the engaging surface 52, the fixing pin 58 is inserted into the fixing pin holes 54b and 57a, and the lower end of the fixing pin 58 composed of a split pin. is bent to both sides to prevent the fixing pin 58 from being arbitrarily drawn out from the fixing pin holes 54b and 57a (see FIG. 6 ).

Accordingly, the coupling ring 34 cannot be rotated by the loosening prevention piece 53 and at the same time cannot be retracted from the terminal 40, even if strong vibration generated during the running process of the electric rail vehicle is applied to the terminal The coupling of the coupling ring 34 to the casing 43 is not relaxed or disassembled, and as a result, the connection of the connector 30 to the terminal 40 is maintained firmly, so that electricity and communication between the preceding and following electric rail vehicles It is possible to always make the connection smoothly.

In the above, the present invention has been described with reference to the drawings exemplified as preferred embodiments, but the present invention is not limited by the illustrated embodiments and drawings, and within the scope of the technical original idea of the present invention, ordinary It goes without saying that various modifications may be made by a person skilled in the art.

10: terminal box 20: cable
21: conductor 30: connector
31: conductor 31a: cable insertion groove
31b: connector pin 32: connector insulator
33: connector casing 33a: outward flange
34: coupling ring 34a: inward flange
34b: female thread 40: terminal
41: terminal sleeve 41a: connector pin hole
42: terminal insulator 43: terminal casing
50: loosening prevention means 51: rotation prevention surface
52: locking surface 53: loosening prevention piece
54: rotation lever 54a: fixing pin hole
56: hinge pin 57: fixed piece
57a: fixing pin hole 58: fixing pin

Claims (1)

Terminal boxes on both sides installed in the electric rail vehicle; a plurality of cables disposed between the terminal boxes on both sides and in which the conductors are exposed by peeling the insulating coating from both ends; A plurality of conductors having a cable insertion groove into which the conductor of the cable is inserted is formed at one end and connector pins are formed at the other end, a connector insulator surrounding the plurality of conductors, a connector casing surrounding the connector insulator, and the connector casing to be rotatable a connector having a coupling ring coupled thereto; A terminal having a plurality of terminal sleeves protruding from both terminal boxes and having connector pin holes into which connector pins are inserted at the protruding ends, a terminal insulator surrounding the plurality of terminal sleeves, and a terminal casing surrounding the terminal insulator, the cable comprising: By inserting a conductor into the cable insertion groove and pressing the outer periphery of the portion where the cable insertion groove is formed, the conductor and the conductor are compressed and firmly coupled, an outward flange is formed on the outer periphery of the connector casing, An inward flange that can be caught on the outward flange is formed, a male threaded portion is formed on the outer circumferential surface of the terminal casing, and a female threaded portion fastened to the male screwed portion is formed on the inner circumferential surface of the coupling ring. It further includes means, wherein the anti-loosening means includes a rotation preventing surface formed parallel to a part of the outer circumferential surface of the coupling ring, a locking surface formed in the coupling ring to be positioned on the terminal box side of the rotation preventing surface, and an inner surface that matches the rotation preventing surface A reverse U-shaped anti-loosening piece that touches and one side is caught on the engaging surface, a L-shaped rotating lever integrally formed on the upper end of the anti-loosening piece, a hinge hole formed horizontally at the tip of the rotating lever, and a hinge fixed on the upper surface of the terminal box A hinge piece having a ball, a hinge pin fitted into the hinge hole, a fixing pin hole formed perpendicular to the rotation lever, a fixing piece protruding from the vertical surface of the terminal box to form a fixing pin hole, and a fixing pin fitted into the fixing pin hole Electric railway cable terminal box system, characterized in that it is configured.

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