JPH019204Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a track-type automatically connected pull-out type cut-off switch in a closed switchboard, in which a plug installed at the head of the cut-off switch is installed on the bottom surface of the control part. It relates to a device that is electrically connected to a plug contact terminal.

In a general closed switchboard, the breaker is inserted into the panel and connected to the main circuit, but if an electrical connection is required with the control unit that controls the breaker, At the same time as the insertion operation, a movable connector provided at the head end of the shredder disconnector engages and is connected to a fixed connector provided on the lower surface of the control inside the panel.

A conventional closed switchboard 1 of this type will be explained based on FIGS. 1 and 2. In FIG. 2 is a frame body, 4 is a vacuum interrupter, 5 is a trolley, 6 is a movable connector protruding from the head end of the cutter 2, and 7 and 9 are fixed connectors vertically installed from the lower surface of the control unit 8. , the connector 7 is a part where the control part 8 and the shroud breaker 2 are electrically connected when the main circuit is connected, and the connector 9 is a part that is used as the control part 8 to test the shunt breaker when the main circuit is not connected. This is the part that is electrically connected to the disconnector 2 and the disconnector 2. In addition,
11 is a roller, and 11a is a track that guides the insertion and removal of the cutter 2.

Therefore, to explain the connectors 6, 7, and 9 with reference to FIG. 2, both ends of the movable connector 6 are fixed to the upper surface of the head end 3a of the cutter 2 and between the pair of insertion guide parts 12 and 12, and are integrated. insulator 1 connected to
3, a plug 14 made of a conductor that protrudes from the upper surface of the insulator 13 at regular intervals in the longitudinal direction and is bent into an arc shape and equipped with a spring action;
It also includes a guide ring 15 that is pivotally supported by the insertion guide portions 12, 12, respectively. This guide wheel 15
is rotatably supported on the center line of the insulator 13. Note that 16 is a screw or bolt that fixes the insertion guide portions 12, 12 onto the head end portion 3a. The fixed connectors 7 and 9 to which the movable connector 6 engages and disengages have a fixed guide portion 17 made of a grooved material,
17, guide rails 18, 18 made of channel-shaped members attached to the fixed guide parts 17, 17, and an insulator 1 with both ends fixed to the fixed guide parts 17, 17.
9, 19, and an uneven portion 20 is formed in the width direction on the lower surface of each insulator 19, 19 at a pitch equal to the pitch of the plug 14, and a plug contact terminal 21 (see FIG. 5) is formed in the recessed portion. ) is provided, and its connection lead portion 21a is exposed on the top surface. The guide rails 18, 18 are connected to the guide wheel 1.
5 and 15, and when both are engaged, the plugs 14 enter the recesses of the concavo-convex portions 20, and are electrically connected to the plug contact terminals 21.

According to such a conventional closed switchboard, the guide wheels 15, 15 and the guide rails 18, 18 are engaged to guide the plug 14 to engage with the recessed part of the uneven part 20. The rings 15, 15 are located on the center line of the arc-shaped plug 14, one each on the left and right.
is formed to be perpendicular to its center line, so when inserting the disconnector 2 into the panel, the plug 1
4 often enter the uneven portion 20 obliquely instead of being aligned in a straight line, causing poor contact with the plug contact terminal.

One of the causes of such poor contact is that if there is a large manufacturing error in the positional relationship between the shroud breaker 2 side and the panel side, the above-mentioned structure cannot absorb that error. In other words, since no insertion guide in the left and right direction is provided between the guide wheel 15 and the guide rail 18, even if the insertion of the disconnector 2 is slightly biased to either the left or right, the guide wheel 15
5 and the guide rail 18, and the uneven portion 20 may even damage the plug 14. This means that the larger the shredder breaker 2 is, the larger the manufacturing error will be, and to avoid this, considerable working precision is required during assembly, reducing manufacturing efficiency.

In view of such circumstances, the present invention provides a movable connector 6 and a fixed connector that do not cause damage to the plug 14 as well as poor contact between the plug 14 of the shield breaker 2 and the plug contact terminal of the control unit 8. The purpose is to obtain a guide structure for conductive connection with the 7 and 9.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 8. In the figures, the same reference numerals are used for the same components as in the conventional example, and redundant explanations will be omitted.

As shown in FIG. 3, in the present invention, a pair of guide rings 22, 22 made of a spool-shaped body are fixed to the insertion guide portions 12, 12 of the movable connector 6 with fixed intervals, and Insertion guide part 1
2, 12 and the head end 3a are movably connected by a long hole 24 that engages with a pin 23 protruding from the head end 3a, and the long hole 24 is aligned with the axis of the insulator 13. The insertion guide portions 12 are bored in parallel, that is, perpendicularly to the direction in which the plug 14 moves. On the other hand, a rail holder 25 made of a channel member is supported on the fixed guide parts 17, 17 on the side of the fixed connectors 7, 9, and a guide rail on which the guide ring 22 runs astride is supported on the rail holder 25. 26
will be posted.

Thus, as shown in detail in FIGS. 4 to 6, the guide rail 22 has slopes 2 on both sides in the longitudinal direction.
6a and a horizontal rolling surface 26b sandwiched between the inclined surfaces 26a, and its tip end is connected to the slope 26a.
6c and is formed into a tapered shape. 27 is a screw that connects the guide rail 26 to the rail holder 25. On the other hand, the guide ring 22 is a spool-shaped body equipped with a flange 22a for preventing wheel slippage, and
The guide rail 26 is attached to the inner surface of the flange 22a.
It has an inclined surface 22b that is in close contact with an inclined surface 26a of the. 22c is a rolling wheel having a circumferential surface having the same width as the rolling surface 26b. Each guide wheel 22 has its shaft 28
is rotatably supported on the insertion guide portion 12 by a nut 29. Then, this insertion guide part 1
2, an elongated hole 24 is bored in parallel with the axis 28 of the guide wheels 22, 22, and a pin 23 protruding from the head end 3a is inserted into the elongated hole 24. Furthermore, this insertion guide portion 12 is locked to the head end portion 3a only by its pin 23 and elongated hole 24, and has a movable structure that allows slight movement in the left and right direction. A bolt 30 connects the insulator 13 and the insertion guide portion 12.

Next, the operation of the present invention will be explained.

When inserting the cutter 2 into the panel, its roller 1
1 along the track 11a, the movable connector 6 moves parallel to the fixed guide parts 7, 9, and the guide ring 22 engages with the tip of the guide rail 26. When the guide ring 22 and the guide rail 26 are engaged, the movable connector 6 is connected to the fixed connectors 7 and 9.
However, if there is an error in the vertical positional relationship, the flange 22a will come into contact with the upper edge 25a of the rail holding part 25 to guide the guide wheel 22 downward for the upward error shown in FIG. 7A. As shown in FIG. 7B, downward errors are regulated by the rolling wheels 22c coming into contact with the slopes 26c of the guide rails 26. In addition, regarding the error in the left and right direction of the guide wheel 22, when the rolling wheel 22c climbs the slope 26c, as shown in FIGS.
The extension part a contacts the inclined surface 22b of the guide wheel 22 and guides the rolling wheel 22c by properly climbing onto the rolling surface 26b, so that the insertion guide section 12 is inserted through the elongated hole 24 (FIG. 4). The movable connector 6 can be moved to the left or right along the pin 23.
slides at the head end 3a in a direction perpendicular to the direction of travel. Thus, the guide wheels 22 on both the left and right sides of the movable connector 6 properly engage with the guide rails 26. If the guide ring 22 and the guide rail 26 are properly engaged, each plug 14 will be connected to each plug contact terminal 2.
1 at an appropriate position, there is no risk that the plug 14 will collide with the uneven portion 20 and be damaged, and the contact between them can also be maintained in a desirable normal state.

According to the present invention described above, when connecting the movable connector 6 and the fixed connectors 7, 9, the guide ring 22 is moved upwardly and downwardly by the guide rail 26 in the conductive connection between the plug 14 and the plug contact terminal 21. Since the entire movable connector 6 is configured to be slidable in order to absorb errors in the left and right direction, it goes without saying that the plug 14 and the plug contact terminal 21 can align and make contact to obtain a good conductive state. The plug 14 will not collide with the uneven portions 20 of the fixed connectors 7, 9 and be damaged. Therefore, this is an extremely effective device for use with large-sized shears and disconnectors where errors that occur during manufacturing or assembly tend to be large.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the main parts of the conventional example, Fig. 2 is a perspective view of the main parts of the conventional example, Fig. 3 is a perspective view of the main parts in an embodiment of the present invention, and Fig. 4 is a plan cross-sectional view of the main parts. , 5th
The figure is a front view of the main part, FIG. 6 is a side sectional view of the main part, and FIGS. 7A, B and 8A, B, C are action explanatory views. DESCRIPTION OF SYMBOLS 1...Closed switchboard, 2...Shipping switch, 6...Movable connector, 7, 9...Fixed connector, 8...Control unit, 12
...Insertion guide part, 14...Plug, 17...Fixed guide part, 21...Plug contact terminal, 22...Guide ring,
22a...flange, 22b...slanted surface, 23...pin, 24...elongated hole, 25...rail holder, 26...guide rail, 26a...slanted surface.

Claims (1)

[Claims for Utility Model Registration] [1] A pair of fixed guide parts 17 made of a groove-shaped material are vertically provided in the depth direction of the lower surface of the control part 8, and a plurality of plug contact terminals 2 are arranged between the fixed guide parts 17.
1 are protruded in parallel, and an insertion guide section 12 is provided protrudingly provided with a guide ring 22 that is guided by the fixed guide section 17 and rolls, and a plurality of plugs are provided between the insertion guide sections 12. In the closed switchboard in which a self-connecting pull-out type cut-off switch 2 is removably installed, the guide rail 2 is provided at the bottom of the fixed guide portion 14.
6 is laid, and slopes 26a are formed on both sides of the guide rail 26 in the longitudinal direction, and one end thereof is formed into a tapered shape with a slope 26c,
In addition, the guide ring 22 is formed into a spool-shaped body having a flange 22a for preventing wheel slippage, and
A controlled power supply automatic connection type drawer type or disconnector characterized in that an inclined surface 22b that is in close contact with an inclined surface 26a of the guide rail 26 is provided on the inner surface of the flange portion 22a. [2] Utility model registration claim 1, characterized in that the guide wheels 22 of the insertion guide portion 12 are engaged with the guide rails 26 in pairs on the left and right sides respectively.
Control power supply automatic connection type drawer type and disconnector described in Section 2. [3] A utility model registration claim characterized in that the insertion guide portion 12 is movably connected by a long hole 24 arranged perpendicular to the insertion direction and a pin 23 that engages with the long hole 24. A control power supply automatically connecting drawer type or disconnector as described in item 1 or 2 of the scope.