JPH06310239A - Rotary type one-layer feeding and distributing plug connector - Google Patents

Abstract

PURPOSE:To provide an one-layer feeding and distributing plug connector which prevents the twisting of a cord when a load requiring one-layer feed and distribution is used. CONSTITUTION:A cord 14 is rotatably inserted into a power source-side connector 10, a cylindrical member 18 with female screw is embedded in the connector 10, and a load-side conductive round bar 16 is rotatably inserted into a load-side connector 12. The 12 has a protruding part 38 with male screw. Further, the wire terminal part 20 of the cord 14 is passed through a washer 21 into a flange form, a nut 26 is screwed to one side of the round bar 16, and a metal fitting 29 is fixed to the other side. When the cylindrical member 18 of the connector 10 is screwed to the protruding part 38 of the connector 12, the protruding part 38 is pressed onto a conductive member 22 through a spring 33, and the round bar 16 and the cord 14 are mutually rotated around the central axis while making sliding contact to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary single-layer power supply / distribution plug connector for connecting a power source to a load which needs to supply more AC / DC in a welding rod holder, an oven electric heater, and other industrial equipment.

[0002]

2. Description of the Related Art A welding rod holder (clip holder) used for arc welding as shown in an exploded perspective view of FIG. Metal fitting 70 and main body fitting 70
An insulating coating handle 72 displaceably supported by a pin 74, an upper insulating cover 76 fixed to the front part of the handle 72 with a screw 78, a lower insulating cover 80 fixed to the body fitting 70 with a screw 82, A spring 86 is provided between the main body fitting 70 and the handle 72 via a flat spring seat 84 so as to urge the handle portion of the handle 72 in an expanded state. The spring 86 is covered with a spring cover 88.

In such a welding rod holder, the holder and the power source are connected with a cord, but the cord and the holder are connected with each other.
A cord connecting copper pipe 90 is used, and the electric wire of the cord is brought into contact with and fixed inside the copper pipe 90.
It is inserted into the tubular rear portion 70a of and is fixed with screws 92. Then, the insulating handle 94 is inserted through the tubular rear portion 70a of the main body fitting 70, and is fixed to the tubular rear portion 70a with the screw 96.

During welding, the handle 72 and the handle 94 are gripped, the welding rod is sandwiched between the front portion of the metal fitting body 70 and the front portion of the handle 72, an arc is generated between the welding rod and the base metal, and the base metal is removed. Weld.

[0005]

By the way, a cord (captyre cable) for connecting a power source and a welding rod holder.
Moves along with the movement of the holder, but it is preferable to follow the movement of the holder without resistance in order to facilitate the welding work. However, in actual welding, since various places are welded in various ways, the cord is often twisted as the welding work proceeds. Then, the force of the twisted cord to return to the original is applied to the holder through the cord, and the hand holding the holder receives a considerable resistance. For this reason, in order to accurately perform a particularly delicate welding, it is necessary to take care not to twist the cord or perform the welding after twisting the cord one by one. If welding is continued without removing the twist of the cord, the twist becomes more severe and the resistance force received by the hand increases further, making it difficult to move the welding rod holder as desired, or accurately measuring the minute portion. It may be difficult to weld.

Therefore, an object of the present invention is not only to prevent the cord from being twisted when using a load such as a welding rod holder that requires more power distribution, but also to provide general industrial equipment having a load that requires more power distribution. It is to provide means that can be widely applied.

[0007]

The above objects are achieved by the rotary single-layer power supply / distribution plug connector of the present invention.
This plug connector includes a load-side connector that rotatably supports a rod-shaped conductive connection member that is connected to the load side that requires more power supply and distribution, and a conductive connection member that is connected to the power supply side. A power supply side connector that rotatably supports about the central axis is provided, the load side connector and the power supply side connector are connected, and the load side and power supply side conductive connecting members are electrically slidably contacted inside both connectors. It is characterized by that.

[0008]

When the load-side connector and the power-source-side connector are integrally connected, for example, by screwing, the load-side and power-source-side conductive connecting members (for example, conductive round bars or cords described in the following embodiments) Are in electrical sliding contact within both connectors. When the load (for example, the welding rod holder) is moved, both connectors are integrally connected, but the load-side connecting member and the power-side connecting member are both rotatable around the central axis inside both connectors, so both The twisting of the connecting member is eliminated by the relative rotation of both, and the twisting of the connecting member from the power supply to the load does not occur.

As a result, since the restoring force of the twisted connecting member is not applied to the load side, the load can be moved without resistance, and when applied to the welding rod holder, the welding work can be performed accurately and easily. it can. In addition, by utilizing the above structural characteristics, the present invention can be widely applied to equipment (for example, oven electric heaters and general industrial equipment) equipped with a load that requires more power feeding and distribution.

In the present invention, as a load side conductive connecting member, as will be described in the following embodiments, when applied to a welding rod holder, a conductive round rod is easy to attach to the holder. It is convenient to use, and use an electric heating rod in the oven electric heater. The conductive connecting member on the power source side may be a cord, and may be appropriately changed according to the application.

Further, the connection between the load side connector and the power source side connector may be fitted or screwed in addition to screwing described later, and is not specified.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The plug connector of the present invention will be described below based on embodiments. A plug connector according to the embodiment is shown in FIG. This plug connector A is applied to a welding rod holder as shown in FIG. 4, and includes a power supply side connector 10 for supporting a cord 14 as a power supply side conductive connecting member so as to be rotatable about its central axis. , A load-side connector 12 that supports a round rod (or pipe) 16 made of phosphor bronze used as a conductive connecting member on the load (here, welding rod holder) side so as to be rotatable about its central axis.

A brass tubular member 18 having a female screw is embedded in the power source side connector 10, and the tip end of the cord 14 is inserted into the tubular member 18 with some margin. The cord 14 is rotatable with respect to the connector 10. At the tip of the cord 14, the coating is removed to expose the internal electric wire, and the end portion 20 of the electric wire is inserted into a brass washer 21 and processed into a flange shape. It is held so that it does not come off. Further, a conductive member 22 for pressing the end portion 20 is arranged on the front side of the flange-shaped end portion 20.

A round bar 16 made of phosphor bronze is rotatably inserted in the load side connector 12. A screw (not shown) is formed on one end portion side (connector 10 side) of the round bar 16, and a nut 26 is screwed to the screw portion. On the opposite side of the nut 26, a brass ring 28 is inserted into the round bar 16. The ring 28 is a metal fitting 29.
Is fixed by. The metal rod 29 and the nut 26 hold the round bar 16 so as not to come off from the connector 12. Further, the round bar 16 is formed with a split 30 over its entire length.
Fits securely on the connector 12.

The inner peripheral surface of the connector 12 is a conductive (for example, brass) portion 31, and in the hollow portion of the conductive portion 31, a bearing 32 for supporting the round bar 16 is arranged. The round bar 16 is supported more rotatably and rotatably by this. Further, the connector 12 is provided with a brass protrusion 38 having a male screw, and this protrusion 38 corresponds to the tubular member 18 of the connector 10. In the protruding portion 38, the cylindrical leaf spring 3 made of phosphor bronze
4. A washer 36 made of brass is inserted into the round bar 16. The leaf spring 34 extends between the bearing 32 and the washer 36, and
Is in contact with. By providing the leaf spring 34,
The round bar 16 can be slightly displaced in the central axis direction, and the round bar 16 is normally urged toward the connector 10. When the connectors 10 and 12 are screwed together, an S-shaped spring 33 made of a conductive material (for example, phosphor bronze) is interposed therebetween.

In the plug connector A thus constructed, the tubular member 18 of the connector 10 and the projecting portion 38 of the connector 12 are screwed to each other, so that both connectors 10, 12 are connected.
Are integrally connected, the protrusion 38 is pressed against the conductive member 22 via the spring 33, and the cord 14 and the round bar 16 are brought into conduction. The plug connector A is attached to the welding rod holder (see FIG. 3) by the tubular rear portion 70 of the main body fitting 70 of the holder.
The round bar 16 may be inserted into a and the round bar 16 may be fastened to the tubular rear portion 70a with the screw 92. Now power cord 14
And all electrical connections to the welding rod holder through the round rod 16 are completed.

When welding is performed using the welding rod holder,
Round bar 1 even when the holder is moved in various angles and directions
6 and the cord 14 rotate relative to each other about the respective central axes while the protruding portion 38 and the conductive member 22 are in sliding contact with each other via the spring 33, so that the cord 14 is not twisted at all. The welding work can be performed accurately and easily.

A plug connector according to another embodiment is shown in FIG. This plug connector B is also applied to the welding rod holder and basically has the same configuration as the plug connector A described above. However, the structure on the power supply side connector 40 side is the same as the plug connector A, but the structure on the load side connector 42 side is different. Therefore, the description of the structure on the connector 40 side is omitted.

The connector 42 includes a round bar (or pipe) 4
6 is inserted, and at the end of the round bar 46, a truncated truncated cone-shaped conductive taper member 5 is disposed in the cavity in the protrusion 62.
4 are attached by screws 55 in an abutting state. The taper member 54 has a split 54a and fits securely to the protrusion 62, and the taper member 54 holds the round bar 46 so as not to come off from the connector 42.

The inner peripheral surface of the connector 42 is a brass portion 56.
And in the cavity of the conductive portion 56,
A brass washer 57 and a phosphor bronze cylindrical plate spring 58 are fitted into the round bar 46, and a brass washer 59 is fitted into the round bar 46 outside the connector 42. The washers 57, 59 and the leaf spring 58 are fixed by a metal fitting 60 provided on the round bar 46. Connector 4
The protruding portion 62 protruding from the second member has a male screw and corresponds to the tubular member 48 of the connector 40. Further, an S-shaped spring 64 made of phosphor bronze is interposed between the tapered member 54 of the connector 42 and the conductive member 52 of the connector 40.

In this plug connector B, the connector 40
When the cylindrical member 48 and the protruding portion 62 of the connector 42 are screwed together, both connectors 40 and 42 are integrally connected. Then, the taper member 54 causes the conductive member 52 to pass through the spring 64.
Then, the taper member 54 (that is, the round bar 46) and the cord 44 are electrically connected to each other. Therefore, as in the case of the plug connector A described above, when mounted on the welding rod holder, the round rod 46 and the cord 44 freely rotate around the central axis while keeping sliding contact with each other according to the movement of the holder. The cord 44 does not twist due to the movement of the holder.

Although the above-mentioned embodiments are all examples of application to the welding rod holder, the present invention can be applied not only to the welding rod holder but also to other devices that require more power distribution. Applications are possible. For example, the plug connector having the structure shown in FIG. 1 or 2 is made large or small,
By attaching a carbon roller to the outer circumference of the round bar and attaching the carbon roller to the current collector of the traveling pallet or the current collector of the traveling crane, it is possible to perform power feeding and distribution from the overhead line or rail. Alternatively, it can be applied to a structure in which the load side is rotated in an oven electric heater provided with left and right single-layer electrodes or other industrial equipment.

For example, when applied to an oven electric heater, the structure of the plug connector may be changed as shown in FIG. Here, the threaded portion 10 is attached to the end of the conductive round bar 100.
1 is formed, and the disk-shaped conductive ring 1 is formed on the screw portion 101.
02 is fitted and the conductive ring 102 is fixed by the nut 103. Then, the conductive cylindrical leaf spring 104 is inserted into the round rod 100, and the conductive ring 106 to which the bearing 105 is attached is fitted into the round rod 100. or,
A lead terminal 107 is connected to the conductive wheel 106.

According to this example, the lead terminal 107, the conductive ring 106, the leaf spring 104, the conductive ring 102, and an electric path leading to the round bar 100 are formed. The wheel 106 can rotate relatively. Then, one side of the electric heater is attached to the round bar 100, and the round bar is rotated by a motor to obtain an oven electric heater in which the electric heater is rotated. In such an oven electric heater, since the electric heater is rotated, uneven baking or the like does not occur.

[0025]

As described above, the rotary single-layer power supply / distribution plug connector of the present invention has the load side connector for rotatably supporting the load side conductive connecting member and the power supply side conductive connecting member. The power supply side connector that supports the movement is connected, and both conductive connection members are electrically slidably contacted inside both connectors, so that both connection members are conductive according to the movement on the load side. While holding, rotate relatively around the central axis.

Therefore, the twisting of the connecting member (cord or the like) due to the movement of the load does not occur, and the resistance due to the twisting of the cord is not applied to the load side, so that the welding work can be performed accurately and easily when applied to the welding rod holder. You can Further, by utilizing the structural features as described above, the present invention can be widely applied to general equipment (such as an oven electric heater) having a load that requires more power supply and distribution.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part of a plug connector according to an embodiment.

FIG. 2 is a longitudinal sectional view of a main part of a plug connector according to another embodiment.

FIG. 3 is a cross-sectional view of a main part of a plug connector of another aspect.

FIG. 4 is an exploded perspective view showing an example of a welding rod holder used for arc welding.

[Explanation of symbols]

 A, B Plug connector 10, 40 Power supply side connector 12, 42 Load side connector 14, 44 Cord (electrically conductive connecting member on power supply side) 16, 46 Round bar (conductively connecting member on load side) 18, 48 With female screw Cylindrical member 38,62 Male threaded protrusion

Claims (1)

[Claims] 1. A load-side connector that rotatably supports a rod-shaped conductive connecting member connected to a load side that requires more power supply and distribution, and a conductive connecting member connected to a power supply side. A power supply side connector that rotatably supports about the central axis is provided, the load side connector and the power supply side connector are connected, and the load side and power supply side conductive connecting members are electrically slidably contacted inside both connectors. A rotary single-layer power distribution plug connector.