JPS635964B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device used for connecting a terminal conductor of a drawer type disconnector and a terminal conductor of a drawer device in a drawer type disconnector. This is an improvement on the connector shown in FIGS. 1 and 2 of Publication No. 82009.

In general, this type of connection device has a large number of contact pieces arranged in parallel in order to facilitate pull-out and push-in connections and also to allow large currents to pass through.
A terminal conductor is inserted into this contact piece. Therefore, the structure tends to be complicated and requires a lot of effort to assemble. Furthermore, because of the complicated structure, it has been difficult to mass-produce devices with stable quality with little variation.

This invention was made to solve the above-mentioned problems, and one embodiment of the invention will be described below with reference to the drawings.

Reference numeral 1 denotes a frame made of a non-magnetic metal plate, such as a stainless steel plate, which is formed by having a spacer part 1A that defines the facing distance between a plurality of pairs of contact pieces 2 to be described later, and both sides of this spacer part 1A being bent into a substantially L-shape. It has a bracket part 1B. This bracket portion 1B has an open support groove 1C for supporting a support shaft 7, which will be described later.
There are a fixture engagement groove 1D for engaging the fixture 9 with the fixture 9, and a positioning finger piece 1E for positioning the contact piece 2 in alignment. 2 is a contact piece made of a conductive material such as copper or brass, which is arranged symmetrically so as to sandwich the space 1A of the frame 1;
These are arranged in multiple pairs.

As described later, each contact piece 2 has a pressing portion 2A for engaging with the wedge 4, a support hole 2B for inserting the support shaft 7, and terminal conductors 11, 12. Contacting part 2C,
There is 2D. Reference numeral 3 denotes a spring holder made of a non-magnetic metal plate, which is inserted between every two rows of the plurality of pairs of contact pieces 2 arranged above. This spring holder 3 has a wedge hole 3 for inserting a wedge 4 into a portion located on the back side 2E of the contact piece 2.
C, a head 3D for locking the push spring 5, and a pull hole 3E.

4 is a wedge to be fitted into the wedge hole 3C, and 5 is a push spring to be fitted between the head 3D of the spring holder 3 and the wedge 4. How to fit the spring holder 3, the push spring 5, etc. will be described later. Reference numeral 6 denotes a first spacer made of a non-magnetic metal plate, which is fitted between the rows of contact pieces 2 through which the spring holder 3 is not inserted. This first spacer 6 has an open support groove 1 provided in the frame 1 as shown in FIG.
An open support groove 6A similar to C is provided.

Reference numeral 7 denotes a support shaft, which has a collar-shaped portion 7A at one end, is inserted into the support hole 2B of the contact piece 2, and is supported at both ends by the open support groove 1C of the bracket portion 1B. In the supported state, the flange-like portion 7A is located between the bracket portion 1B and the contact piece 2 and functions to prevent the support shaft 7 from coming off (movement in the axial direction).

8 is a second spacer formed in the shape of a round washer. Reference numeral 9 denotes a fixing metal fitting, whose both ends are engaged with the fixing fitting engagement groove 1D of the bracket portion 1B, and tightened with machine screws 10 so as to clamp the terminal conductor 11.

By tightening the fixture 9, the terminal connecting device of the present invention is attached to the terminal conductor 11.

Next, the procedure for assembling the above-mentioned components and the assembled structure will be explained.

First, a support shaft 7 is attached to each of the plurality of pairs of contact pieces 2.
Insert. In this case, every two rows of contact pieces 2 have a second
Fit the spacer 8. Contact piece 2 as above
The support shaft 7 inserted through the frame 1 is fitted so as to be supported by the open support groove 1C provided in the bracket portion 1B of the frame 1. At that time, the first spacers 6 are fitted between the rows where the second spacers 8 are not fitted.

Next, fit the push spring 5 and wedge 4 into the head 3D side of the spring holder 3, insert this spring holder 3 between the rows fitted with the second spacers 8, and insert the pull-out fitting for assembly into the pull-out hole 3E. (not shown), the pressure spring 5 is compressed and the lower wedge hole 3C shown comes out on the back surface 2E of the contact piece 2, so insert the wedge 4 into this wedge hole 3C. . The relationship between the length of the wedge hole 3C and the width of the wedge 4 is such that when the push spring 5 is compressed during assembly as described above, the other wedge hole 3C fully protrudes from the back surface 2E of the contact piece 2. The length of the wedge hole 3C is increased to the extent that it can be used.

As described above, by mounting the push spring 5 using the spring holder 3, the contact piece 2 is pressed through the wedge 4, and the space 1A of the frame 1 is pressed.
A plurality of pairs of contact pieces 2 are arranged so as to sandwich the contact pieces 2 between them.

Next, when this connecting device is fixed to the breaker terminal conductor 11, the breaker terminal conductor 11 is inserted between one side of the plurality of pairs of contact pieces 2. Due to this insertion, the support shaft 7 moves slightly outward in the open support groove 1C. Both ends of the fixture 9 are engaged with the fixture engagement grooves 1D of the bracket portion 1B, and tightened with machine screws 10 so as to clamp the inserted disconnector conductor 11. In this case, the bus bar attachment hole 11A of the terminal conductor 11 is used for attachment.

As described above, the breaker main body equipped with the terminal connecting device is mounted on the drawer, and the terminal conductor 12 of the drawer is connected to the terminal connecting device. In this case, the coupling is inserted between the other sides of the plurality of pairs of contact pieces 2 arranged. This insertion compresses the pressure spring 5, and the contact piece 2 comes into contact with the terminal conductor 12 due to the compression force of the pressure spring 5.

In addition, although the above description shows the case where the terminal connection device is fixed to the breaker terminal conductor 11, it may be fixed to the pullout device terminal conductor 12.

According to the terminal connection device configured as above,
The support shaft 7 can be inserted into the bracket portion 1B of the frame 1 with the support shaft 7 inserted through the plurality of pairs of contact pieces 2, and in the assembled state, the support shaft 7 is prevented from moving in the axial direction by the collar portion 7A. There is no need to incorporate detent parts. Further, the push spring 5 is fitted into the spring holder 3, inserted between the rows of the contact pieces 2, and attached with the wedge 4.

With the above configuration, even if the terminal connecting device uses a large number of contact pieces, the component configuration is simple and assembly work is easy.

In addition, since the support shaft of the contact piece is movable in the open support groove, the above-mentioned simple structure and easy assembly are combined with less variation in the contact state with the terminal conductor, resulting in stable quality terminal connection. It has many effects such as becoming a device.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a front view, Figure 2 is a bottom view, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is B- in Figure 2.
It is a sectional view taken along the B line. In the figure, 1...frame, 1A...interval part, 1B
... Bracket part, 2 ... Contact piece, 2A ... Pressing part, 3 ... Spring holder, 4 ... Wedge,
5...Pushing spring, 7...Bearing shaft, 9...Fixing metal fittings,
11 . . . breaker terminal conductor; 12 . . . drawer device terminal conductor.

Claims (1)

[Claims] 1 A frame consisting of a gap portion and a bracket portion formed by bending both sides of the gap portion into a substantially L-shape, a plurality of pairs of contact pieces arranged opposite to each other so as to sandwich the gap portion of the frame, and a plurality of pairs of contact pieces A spring holder inserted between the rows of contact pieces, a wedge fitted into the spring holder so as to engage with the center point on the back side of the contact piece, and each of the plurality of pairs of contact pieces closed through the wedge. a push spring fitted in the spring holder so as to bias it in the direction of the contact; a support shaft having a collar at one end and inserted into a through hole provided on one side of the contact piece; and a support shaft provided on the bracket. an open bearing groove that supports the
Both ends are engaged with the bracket and screwed onto the wire breaker terminal conductor (or pullout device terminal conductor) inserted into one side of the plurality of pairs of contact pieces, thereby connecting the bracket and the wire breaker terminal. A drawer-type or disconnector comprising a fixing fitting for fixing the conductor to the conductor, and configured to insert a drawer device terminal conductor (or a disconnector terminal conductor) into the other side of the plurality of pairs of contact pieces. Terminal connection device.