JP3612269B2 - Switch movable electrode support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a movable electrode support structure for a switch, and more particularly to a movable electrode support structure for a switch capable of adjusting the mounting position of the movable electrode and appropriately maintaining the correspondence of the movable electrode to the fixed electrode. It is.
[0002]
[Prior art]
Conventionally, a switch shown in FIG. 8 is known. In this switch, the power supply side bushing 11 and the load side bushing 12 are fixed to the left side wall 10a and the right side wall 10b of the switch case 10 opposite to each other. The power supply side bushing 11 is provided with a fixed electrode 13, and the load side bushing 12 is provided. The conductive rod 14 is supported through. A movable electrode support member 31 is attached to the conductive rod 14 by two bolts 22, and the movable electrode 16 is supported on the movable electrode support member 31 by a connecting pin 26 so as to be opened and closed. When the movable electrode 16 is tilted in the vertical direction about the connecting pin 26 by an opening / closing drive mechanism (not shown), the movable electrode 16 is brought into contact with or separated from the fixed electrode 13 and the electric circuit is turned on and off. .
[0003]
[Problems to be solved by the invention]
However, since the movable electrode 16 support structure in the conventional switch described above has the movable electrode support member 31 fastened and fixed to the conductive rod 14 by the bolt 22, the mounting position of the movable electrode 16 is set to a predetermined position. As a result, when the correspondence between the fixed electrode 13 and the movable electrode 16 is out of order, there is a problem that it cannot be corrected on the movable electrode support member 31 side.
[0004]
In order to correct the correspondence relationship of the movable electrode 16 with respect to the fixed electrode 13, a method of adjusting the position of the load side bushing 12 with respect to the right side wall 10b is employed. This position adjustment moves the three-phase load-side bushing 12 simultaneously by loosening a number of tightening bolts 33 of the tightening mechanism 32 that fastens and fixes the load-side bushing 12 to the right side wall 10b. For this reason, not only the delicate position adjustment work of the movable electrode 16 for each phase cannot be performed, but also the position adjustment work of the three-phase movable electrode 16 is troublesome.
[0005]
An object of the present invention is to provide a support structure for a movable electrode in a switch that can solve the problems in the prior art and can easily adjust the mounting posture of the movable electrode for each phase.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 is a switch in which a movable electrode is detachably attached to a fixed electrode arranged in the switch case, and is attached to the switch case. was bushing tightened inner end portion lower face to a fixed support plate supported conductive rod is fixed to and mounted electrode support member in a state in which the movable electrode with respect to the fixed support plate is rotatably supported, the the electrode support member with respect to the axial direction of the conductive rod and summarized in that provided an electrode position adjusting mechanism which rotates adjusted to sliding adjustment or lateral direction to the left or right direction.
[0007]
According to a second aspect of the present invention, in the first aspect, the electrode position adjusting mechanism is fixed to the conductive rod and includes a pair of left and right support plate portions, and screw holes are formed in both the support plate portions. The fixed support plate includes an adjustment plate connected to the support plate portion of the fixed support plate by a plurality of set bolts , and both adjustment plates are configured by an electrode support member in which long adjustment holes are formed. the adjusting plate is summarized in that which is fastened by Shi pair to the support plate portion left rightward sliding or lateral direction of the rotational position adjustably said set bolt.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the power supply side bushing 11 and the load side bushing 12 are opposed to each other in every three phases (only one phase is shown) on the left side wall 10 a and the right side wall 10 b facing each other of the switch case 10. It is supported through. As shown in FIGS. 1 and 5, a fixed electrode 13 having a substantially octagonal cross section is projected from the inner end of the power supply side bushing 11. A pair of tapered surfaces on both sides along the longitudinal direction in the upper part of the fixed electrode 13 are guide surfaces 13a, and both central side surfaces of the fixed electrode 13 are current-carrying contact surfaces 13b.
[0012]
As shown in FIG. 1, a conductive rod 14 projects from the inner end of the load-side bushing 12, and the base end of the movable electrode 16 rotates around the conductive rod 14 via an electrode position adjusting mechanism 15. It is supported movably.
[0013]
A drive link 18 is connected to an intermediate portion of the movable electrode 16 via a connecting shaft 17, and a lever 19 is connected to an upper end portion of the drive link 18. When the lever 19 is rotated by an opening / closing mechanism (not shown) configured to be externally operable, the movable electrode 16 is switched between the closing position and the closing position with respect to the fixed electrode 13.
[0014]
Next, the electrode position adjusting mechanism 15 will be described. As shown in FIG. 5, the conductive rod 14 has a drum-shaped cross section, and has a front-rear direction (in the same direction as the longitudinal direction of the conductive rod 14). ) Are formed at two locations at predetermined intervals. The bottom surface of the front end of the conductive rod 14 is in contact with the central bottom plate portion of the fixed support plate 21. A bolt 22 is inserted into a hole 21 a provided in the bottom plate portion and screwed into the screw holes 14 a and 14 b. The fixed support plate 21 is fastened and fixed. The fixed support plate 21 includes horizontal support plate portions 21b and 21c extending left and right, and screw holes 21d and 21e are formed in both the support plate portions 21b and 21c.
[0015]
An electrode support member 23 is mounted on the fixed support plate 21. The electrode support member 23 is composed of a main body 23a having a vertically long hairpin shape when viewed from the front, and adjustment plates 23b and 23c formed by horizontally bending the left and right sides of the lower end on both sides. The adjustment plates 23b and 23c have adjustment holes 23d that are long in the left-right direction so as to correspond to the screw holes 21d and 21e of the fixed support plate 21 and slightly larger than the outer diameters of the screw portions of set bolts 24 and 25 described later. , 23e are formed.
[0016]
The set bolt 24 inserted downward from the adjustment hole 23d is screwed into the screw hole 21d, and the set bolt 25 inserted downward from the adjustment hole 23e is screwed into the screw hole 21e. A shaft support hole 23f is formed in the main body 23a, and a connection pin 26 is passed through the shaft support hole 23f. A base end portion of the movable electrode 16 is rotatably supported by the connection pin 26. A nut 27 is screwed into a male screw portion formed at the tip of the connecting pin 26, and a coil spring 28 and a washer 29 are interposed between the nut 27 and the main body 23 a of the electrode support member 23. The movable electrode 16 includes a pair of flat contact blades 16a and 16b and flat reinforcing members 16c and 16d which are overlapped from the outside of the contact blades 16a and 16b.
[0017]
Next, the operation of the support structure for the movable electrode 16 of the switch configured as described above will be described.
1, when the lever 19 is lifted upward, the connecting shaft 17 is lifted upward via the drive link 18, and the movable electrode 16 tilts upward about the connecting pin 26. Is done. Therefore, the movable electrode 16 is switched from the input state to the open position indicated by the chain line in FIG. On the contrary, when the lever 19 is moved downward from the open position indicated by the chain line in FIG. 1, the movable electrode 16 is switched to the closing position indicated by the solid line.
[0018]
The effects of the support structure of the movable electrode 16 are listed together with the configuration.
(1) The fixed support plate 21 is fastened and fixed to the lower part of the front end of the conductive rod 14 by bolts 22, screw holes 21 d and 21 e are formed in the left and right support plate portions 21 b and 21 c of the fixed support plate 21, and the electrode support member 23. The set bolts 24 and 25 are inserted from the long hole-like adjustment holes 23d and 23e formed in the adjustment plates 23b and 23c, and screwed into the screw holes 21d and 21e. For this reason, on the upper surface of the support plate portions 21b and 21c of the fixed support plate 21, the electrode support member 23 is adjusted in the horizontal direction relative to the central axis S of the conductive rod 14 (T arrow in FIG. 5) and the rotation position adjustment (M arrow) Is possible. For this reason, the mounting posture of the movable electrode 16 can be adjusted, and the movable electrode 16 can be mounted at a proper position facing the fixed electrode 13 normally.
[0019]
(2) In the above embodiment, the electrode support member 23 is supported on the upper surface of the fixed support plate 21, and the set bolts 24 and 25 are screwed into the screw holes 21d and 21e from above. For this reason, the attachment work of the electrode support member 23 to the fixed support plate 21 can be easily performed, and the position adjustment work of the electrode support member 23 can be easily performed.
[0020]
In addition, you may change the said embodiment as follows.
As shown in FIG. 6, the electrode support member 23 is fastened and fixed to the conductive rod 14 with a bolt 22, and a U-shaped portion 23 g supported on the upper surface of the conductive rod 14 is formed on the electrode support member 23. Then, a circular hole 23h and a long hole 23i are formed at the bottom. A shaft support hole 23 f that penetrates the connecting pin 26 is provided at the upper end of the electrode support member 23. With one of the two bolts 22 passing through the hole 23h and screwed into the screw hole 14a of the conductive rod 14, the electrode support member 23 is rotated horizontally around the bolt 22, and the other The bolt 22 passes through the long hole 23i and is screwed into the screw hole 14b to adjust the mounting position of the electrode support member 23. This example can reduce the number of parts as compared with the embodiment described above.
[0021]
As shown in FIG. 7, a circular hole 14c and a long hole 14d are formed in the conductive rod 14, and a screw hole 23j is formed at the bottom of the U-shaped portion 23g of the electrode support member 23 formed so as to cover the conductive rod 14. 23k is formed. Then, the bolts 22 and 22 may be inserted from above into the holes 14c and the insertion holes 14d and screwed into the screw holes 23j and 23k. This example can reduce the number of parts compared to the above-described embodiment. In addition, it is desirable to facilitate rotation by using a hexagon socket head bolt as the bolt 22.
[0022]
In the other examples shown in FIGS. 6 and 7, the hole 23h may be a long hole and the hole 14c may be a long hole.
[0023]
【The invention's effect】
As described above in detail , the inventions according to claims 1 and 2 can easily adjust the mounting position of the movable electrode.
[Brief description of the drawings]
FIG. 1 is a front view of an opening / closing mechanism of a switch embodying the present invention.
FIG. 2 is a plan view of an opening / closing mechanism.
FIG. 3 is a cross-sectional view of a movable electrode support mechanism.
4 is a cross-sectional view in which a drive link taken along line 1-1 of FIG. 1 is omitted.
FIG. 5 is an exploded perspective view showing a support structure for a movable electrode.
FIG. 6 is a perspective view of a movable electrode support structure showing another example of the present invention.
FIG. 7 is an exploded perspective view of a movable electrode support structure showing another example of the present invention.
FIG. 8 is a schematic cross-sectional view showing a movable electrode support structure of a conventional switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Switch case, 12 ... Bushing, 13 ... Fixed electrode, 14 ... Conductive rod , 15 ... Electrode position adjustment mechanism, 16 ... Movable electrode, 21 ... Fixed support plate, 21b, 21c ... Support plate part, 21d, 21e ... screw hole, 23 ... electrodes supporting member, 23b, 23c ... adjusting plate, 23d, 23e ... adjustment hole.

Claims (2)

In a switch equipped with a movable electrode (16) detachably attached to a fixed electrode (13) disposed in a switch case (10),
The switch case (10) mounted bushing (12) is supported conductive rod (14) the inner end portion lower face to the fixed support plate (21) fixedly fastened to the, relative to the fixed support plate (21) It said movable electrode (16) is mounted an electrode support member (23) in a state of being rotatably supported, the electrode support member (23) in the left right direction with respect to the axial direction of the Shirubedenbo (14) A movable electrode support structure for a switch, comprising an electrode position adjusting mechanism (15) for adjusting sliding or rotating in the left-right direction. The electrode position adjusting mechanism (15) according to claim 1, wherein the electrode position adjusting mechanism (15) is fixed to the conductive rod (14) and includes a pair of left and right support plate portions (21b, 21c) , and the both support plate portions (21b, 21c). The fixed support plate (21) in which screw holes (21d, 21e) are formed, and the support plate portion (21b, 21c) of the fixed support plate (21) are connected by a plurality of set bolts (24, 25). Adjustment plates (23b, 23c), and both adjustment plates (23b, 23c) are constituted by electrode support members (23) in which elongated adjustment holes (23d, 23e) are formed. (23b, 23c) are supporting plate portion (21b, 21c) paired Shi switchgear is fastened by sliding or lateral direction of the rotational position adjustably said set bolt (24, 25) in the left right direction The movable electrode support structure.

Images