JPH0129997Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a universal feeder connected to a movable member that is energized, such as when connecting a multi-spot welding machine and a transformer.

(Prior Art) Conventionally, a flexible jumper cable or the like is generally used for connection to a movable member that is energized.

(Problems to be Solved by the Invention) However, such a cable connection has problems such as the cable being damaged in a short period of time due to fatigue due to bending of the cable.

(Means for solving the problem) The present invention is aimed at solving the above problem, and includes an electrically conductive piston and an electrically conductive piston formed integrally with the piston in an insulated pressurized cylinder. A first joint consisting of a conductive rod whose end protruding outside the cylinder serves as a terminal connection part is inserted into the first joint.
providing a conductive intermediate ring sandwiched between the piston of the joint and the fixing ring provided in the cylinder;
The intermediate ring includes a conductive connecting head having a spherical surface that is fitted to the inner circumferential surface of the intermediate ring, and a conductive connecting head having an end that is formed integrally with the connecting head and protrudes outside the cylinder as a terminal connecting part. It is characterized in that the second joint consisting of a rod is rotatably supported.

(Example) Below, an example of the present invention will be explained based on the drawings.
indicates a pressurized cylinder, the cylinder 1 is made of an insulating material, including the end cover 3 which opens the connection port 2 with the pressure source, and the piston 4 is formed integrally with the piston 4 and protrudes outside the cylinder. The rod 5 is made of a conductive material, and is formed in a first joint 6 with both ends of the rod 5 cut out to form a terminal connection part 5a. An intermediate ring 8 made of a conductive material sandwiched between a fixing ring 7 made of a material is inserted into the cylinder 1, and a connecting head 9 having a spherical surface that is rotatably inserted into the intermediate ring 8 is integrated with the connecting head 9. The rod 10, which is formed in the same manner as shown in FIG. In the figure, 12 is a cooling water inflow connection port formed at each joint 6, 11, and 13 is also at each joint 6, 11.
The cooling water outflow connection 14 formed in 2 represents a stopper of the connection head 9.

To explain its operation as follows, when a terminal on the transformer side is connected to the terminal connection part 6a of the first joint 6 and a terminal of a spot welding machine is connected to the terminal connection part 10a of the second joint 11, the second joint 11 The connecting head 9 can freely rotate with respect to the first joint 6, thus facilitating the movement of the spot welding machine.

(Effect of the invention) In this way, when the invention is applied, the pressure cylinder 1
A conductive first joint 6 consisting of a piston 4 and a rod 5 is fitted into the cylinder 1, and a conductive intermediate ring 8 is provided which is held between the piston 4 of the first joint 6 and a fixed ring 7 in the cylinder 1. Since a second joint 11 consisting of a connecting head 9 fitted into the intermediate ring 8 and a rod 10 formed integrally with the connecting head 9 is rotatably provided on the intermediate ring 8, the first joint 6 and The second joint 11 rotates freely and facilitates the movement of the current-carrying member connected to it, and the first joint 6 and the second joint 11 are intermediate rings that are held together by the pressure of the cylinder 1. Since the power is supplied through the terminal 8, the power can be supplied smoothly without causing contact failure during movement, and since there are no members that cause fatigue due to movement, it has effects such as effective operation over a long period of time.

[Brief explanation of drawings]

The drawing is a cutaway side view showing an embodiment of the present invention. 1... Pressure cylinder, 4... Piston, 5...
Rod, 5a... terminal connection part, 6... first joint,
7... Fixed ring, 8... Intermediate ring, 9... Connection head, 10... Rod, 10a... Terminal connection part,
11...Second joint.

Claims (1)

[Scope of utility model registration request] A first joint consisting of an electrically conductive piston and an electrically conductive rod integrally formed with the piston and having an end protruding outside the cylinder as a terminal connection portion is inserted into an insulated pressurizing cylinder, A conductive intermediate ring is provided which is held between the piston of the first joint and a fixed ring provided in the cylinder, and the intermediate ring has a conductive connection having a spherical surface that is fitted on the inner peripheral surface of the intermediate ring. A flexible feed characterized in that a second joint consisting of a head and a conductive rod integrally formed with the connecting head and whose end protruding outside the cylinder serves as a terminal connection part is rotatably supported. electronic.