JPH0541040U - Stopper input adjustment stopper - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a closing amount adjusting stopper for a switch, which has a small number of members and can adjust the closing amount quickly and easily. In a switch capable of adjusting the amount of the movable electrode input to the fixed electrode at a locking position of a driving member of the movable electrode, the driving member and a plurality of flat surfaces of its outer periphery are stopper surfaces at the locking position. Polygonal adjustment stopper 13
A is provided, and the stopper 13a is fixed to the base frames 7, 8 and the like so as to be rotatable at a position eccentric from its center position. As a result, the optimum input amount can be adjusted quickly and easily, and the cost can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stopper for adjusting the amount of charge when a movable contact blade is charged into a fixed electrode in a switch.

[0002]

[Prior Art]

 Conventionally, in a switch, for example, a bolt 52 as shown in FIG. 7 is used in order to optimally adjust the input amount when the movable contact blade is input to the fixed electrode. This is because the bolt 52 is screwed into the bracket 51 and fastened with the nut 50, and the distance between the head of the bolt 52 and the bracket 51 is adjusted to adjust the contact distance to the connecting lever 57. It was done like this.

This switch causes the interlocking lever 55 to rotate together with the rotating shaft 54 by rotating the rotating shaft 54, and accordingly, the insertion lever via the driven link 56 and the connecting levers 57 and 58. 60 is rotated so as to be fed to the fixed electrode of the movable contact blade.

In this case, if the distance from the bracket 51 to the bolt 52 is adjusted to be long, when the rotating shaft 54 is rotated, the connecting lever 57 comes into early contact with the bolt 52 as a stopper, so that the amount of insertion becomes small, and If the distance is adjusted to be shorter, the input amount will increase.

Therefore, the worker adjusts the distance by advancing or retracting the bolt 52 until the amount of injection is optimum.

[0006]

[Problems to be solved by the device]

 However, in such a conventional adjustment technique, since the connecting lever 57 is configured to abut on the top surface of the head of the bolt 52, the rotational axis direction of the connecting lever 57 and the axial direction of the bolt 52 are determined. Must be arranged orthogonally, and it is necessary to project the bracket 51 to a position corresponding to the rotation locus of the connecting lever 57, and in order to secure the mounting space for the bracket 51, the overall shape of the switch is large. There was a tendency to change. In addition, the number of component mounting processes has increased, leading to higher costs.

Further, since various members are arranged in a crossed manner inside the switch, it is difficult to perform the distance adjustment work quickly. In particular, the bolt 52 and the nut 50 had to be tightened separately, which made it difficult to work in a narrow vessel.

The present invention has been made in view of such circumstances, and an object thereof is to provide a closing amount adjusting stopper for a switch, which has a small number of members and can adjust the closing amount quickly and easily. To provide.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, in a switch capable of setting the input amount of a movable electrode with respect to a fixed electrode at a locking position of a driving member of the movable electrode, the driving member is provided at the locking position. Along with the provision of a polygonal adjustment stopper with multiple outer peripheral planes as stopper surfaces, the stopper is fixed to a base frame and the like so as to be rotatable at a position eccentric from the center position.

[0010]

[Action]

 According to the above configuration, since the polygonal adjustment stopper is rotatably fixed to the base frame or the like at a position eccentric from the center position, the adjustment stopper is rotated to contact the contacting member. It is possible to adjust the optimum amount by changing the interval at the time of setting and using a predetermined plane on the outer circumference of the adjustment stopper as a stopper.

[0011]

【Example】

 Hereinafter, an embodiment in which the present invention is embodied in a manual rotary air switch will be described in detail with reference to the drawings.

(First Embodiment) As shown in FIG. 2, in the air switch according to the present embodiment, a main body case 1 has a box shape made of metal, and is fixed in each opening / closing chamber for each phase. Opening / closing parts (not shown) having movable contact blades are provided, and the movable electrodes of the opening / closing parts are brought into contact with and separated from the fixed electrodes by the opening / closing operation mechanism 3.

The opening / closing operation mechanism 3 is arranged inside the front wall 1 a of the main body case 1. Four bolts 4 are projected from the inside of the front wall 1a by stud welding, and a bearing plate 6 is attached to the four bolts 4 via nuts 5 for holding a gap. An upper support plate 7 and a lower support plate 8 are arranged on the support plate 6. The bolts 4 are inserted into the attachment pieces 7a, 8a provided on the upper portion of the support plate 7 and the lower portion of the support plate 8, and the nuts 10 are tightened and fixed through the washers 9. In the overlapping portion of 8, the pair of bolts 12 and nuts 13a and 13b are tightened and fixed via a spring washer 11, and the support plates 7 and 8 are integrally connected to each other as a whole.

Of the nuts 13 that connect the support plates 7 and 8, the left nut 13a in FIGS. 2 and 4 is thicker than the right nut 13b, and serves as an adjustment stopper formed with an eccentric screw hole. The hexagonal eccentric nut 13a is eccentrically screwed with the threaded portion of the bolt 12 so as to be eccentrically rotatable, and the amount of adjustment can be changed in six stages by being rotated. The bolt 12 and the nut 13a can be rotated around the axis to adjust their positions.

Further, a stopper 14a is formed on the extending portion 14 at the lower end of the upper support plate 7 and is bent toward the front wall 1a side of the main body case 1 in an L-shaped cross section, which corresponds to the stopper 14a. At this position, the lower support plate 8 projects to the front side (the left side in the phantom line shown in FIG. 3) of the circular hole 15 formed through the lower support plate 8 to prevent the stop lever 18 as a drive member described later from rotating. ing. Further, a stopper 16 is installed horizontally near the upper end of the upper support plate 7 and between the upper support plate 7 and the support plate 6 to prevent the interlocking member 20 from rotating.

A through hole 22 is provided in a substantially central portion of the front wall 1 a, and a handle shaft 21 of an opening / closing operation handle 19 is inserted into the through hole 22 via a boss 23. A pair of O-rings 24 are mounted on the outer periphery of the handle shaft 21 to prevent rainwater from entering the boss 23. The shaft end of the handle shaft 21 is rotatably supported by being inserted into a through hole 25 provided through the upper support plate 7.

The interlocking member 20 is attached to the handle shaft 21 sandwiched between the support plate 6 and the support plates 7 and 8. As shown in FIG. 1, the interlocking member 20 is a plate-like member having a mountain-shaped pointed portion 20a above the handle shaft 21, an extending portion 20b on the left side, and a through hole 26 extending in an arc shape on the lower portion. The handle shaft 21 is fixed to the handle shaft 21 so as to rotate integrally with the handle shaft 21.

In the overlapping portions of both support plates 7 and 8, the groove 7b formed at the lower end of the upper support plate 7 and the groove 8b formed at the upper end of the lower support plate 8 are overlapped with each other. A bearing hole 27 is formed between 7 and 8. A shaft end of a drive shaft 30 for inserting a movable contact blade into a fixed electrode is rotatably supported in the bearing hole 27 by an opening / closing portion.

One end of a stop lever 18 is fixed to the drive shaft 30, and an engagement pin 17 is formed near the other end of the stop lever 18. The engagement pin 17 is projected from the through hole 22 of the interlocking member 20 to the front side (left side in FIG. 3) and can come into contact with both left and right sides of the through hole 22 in FIG.

As shown in FIG. 1, a bracket 33 is fixed to the main body case 1 on the left side of the switch, and a shaft 31 a is rotatably supported by the bracket 33. A spring rod 31 is slidably inserted into the shaft 31a at one end thereof. The other end of the spring rod 31 is rotatably attached to the extending portion 20b of the interlocking member 20 by a pin 32. The spring rod 31 is adapted to rotate up and down around the bearing portion 33a in FIG. On the outer circumference of this spring rod 31, a coil spring 29 is attached, both ends of which are locked to a shaft 31a and a step portion provided on the spring rod 31, and the guide lever 31 is rotated to rotate the bearing portion 33a center and the handle shaft 21 center. One end of the spring rod 31 slides on the shaft 31a to accumulate power as the pin 32 approaches the dead line X-X line connecting the two.

Next, the operation of such a closing amount adjustment stopper of the air switch will be described. First, as shown in FIG. 1, the opening / closing operation handle 19 is manually rotated clockwise in the open switch. Then, the interlocking member 20 integrated with the handle shaft 21 rotates clockwise. Then, as the interlocking member 20 rotates, the spring rod 31 is gradually rotated counterclockwise to store the coil spring 29. Then, as soon as the pin 32 crosses the dead point X-X line, the accumulated force is released at once and the interlocking member 20 instantly rotates clockwise. Then, the engaging pin 17 comes into contact with the right side of the through hole 26 of the interlocking member 20, and is pushed by the interlocking member 20 as it is, so that the stop lever 18 is rotated clockwise around the drive shaft 30 as shown in FIG. As shown, the eccentric nut 13a is brought into contact with the corresponding outer peripheral flat surface and stopped. That is, the movable contact blade is inserted into the fixed electrode.

Next, in the case of opening, the opening / closing operation handle 19 is operated to rotate in the counterclockwise direction. Then, the interlocking member 20 integrated with the handle shaft 21 is also rotated counterclockwise, and as the interlocking member 20 is rotated, the guide lever 31 is gradually rotated clockwise to store the coil spring 29. . Then, as soon as the pin 32 crosses the dead point X-X line, the accumulated force is released at once, and the interlocking member 20 rotates counterclockwise in a moment. Then, the engaging pin 17 comes into contact with the left side of the through hole 26 of the interlocking member 20 and is pushed by the interlocking member 20 as it is, and the stop lever 18 is rotated counterclockwise about the drive shaft 30 and is again drawn. It becomes the state of 1. Since the stop lever 18 contacts the stopper 14a, the stop lever 18 cannot be rotated more than necessary.

Next, the case of adjusting the input amount will be described. That is, the movable contact blade is fixed in the input state of FIG. 4, that is, in the state where the stop lever 18 is in contact with the outer peripheral plane of the eccentric nut 13a. Check the input amount to the electrode. If it is inappropriate, the contact distance between the eccentric nut 13a and the stop lever 18 is adjusted, and the valve is opened again.

Then, in the open state shown in FIG. 1, the bolt 12 is loosened, and the bolt 12 is re-tightened with respect to the eccentric nut 13a so that the stop lever 18 comes into contact with another outer peripheral plane correspondingly. For example, if the eccentric nut 13a is rotated and positioned so as to change from the state of FIG. 5a to the state of FIG. The outer peripheral flat surface can be brought into contact with the stop lever 18 so as to face it, and the optimum amount can be easily adjusted simply by changing the tightening position of the eccentric nut 13a.

Further, since the eccentric nut 13a is arranged in the axial direction parallel to the axial direction of the drive shaft 30, the stopper bracket for adjusting the stop position is not necessary as compared with the conventional case. Therefore, the space for mounting the bracket is not required, and the size can be reduced. (2) Second Embodiment In the closing amount adjusting stopper of the switch according to the first embodiment, the eccentric nut 13a may be replaced with an eccentric bolt 34 as shown in FIG.

In the first embodiment, instead of the eccentric nut 13a connecting the support plates 7 and 8, the eccentric bolt 34 is inserted from the front wall 1a side so as to connect the support plates 7 and 8, and the case is inserted. It is fastened with a normal nut 35 from the inside. Other configurations are similar to those of the first embodiment.

According to this structure, a predetermined outer peripheral surface of the head portion 34a of the eccentric bolt 34 can be brought into contact as the facing surface of the stop lever 18 according to the amount of insertion, and the tightening position of the eccentric bolt 34 can be changed. The optimum input amount can be easily adjusted simply by changing it, and it can be made compact.

Although the embodiments of the present invention have been described in detail above, the present invention can be implemented in other modes. For example, although the hexagonal nut 13a and the bolt 34 are used in both the first and second embodiments in the above embodiments, the number of hexagonal nuts 13a and bolts 34 is not necessarily limited to hexagons, and trigonal, tetragonal or heptagonal or more can be freely used. is there.

In addition, the mounting position of the eccentric bolt with respect to both the support plates 7 and 8 is changed and configured, and the present invention can be appropriately changed and implemented without departing from the spirit of the present invention.

[0030]

[Effect of the device]

 As described in detail above, the present invention provides a switch capable of adjusting the input amount of the movable electrode with respect to the fixed electrode at the locking position of the driving member of the same movable electrode. To reduce the number of members by providing a polygonal adjustment stopper that uses a plurality of outer peripheral planes as stopper surfaces and rotatably fixed to the base frame etc. at a position eccentric from the center position. Since the cost can be reduced, the cost can be reduced, and the switch input amount can be adjusted quickly and easily, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a front view illustrating a closing amount adjustment stopper of an air switch according to an embodiment of the present invention.

FIG. 2 is a front view illustrating the overall configuration of a switch in the same embodiment.

FIG. 3 is a side view illustrating a closing amount adjustment stopper of a switch according to the same embodiment.

FIG. 4 is a front view illustrating a closing state of a closing amount adjustment stopper of a switch in the same embodiment.

FIG. 5 is a diagram illustrating an eccentric nut in the same embodiment, in which a indicates a state in which a small amount is input and b indicates a state in which a large amount is injected.

FIG. 6 is a perspective view illustrating an eccentric bolt of another embodiment.

FIG. 7 is a front view illustrating a conventional example.

[Explanation of symbols]

13a ... Nut as adjustment stopper, 34a ... Head of bolt as adjustment stopper, 7 ... Upper support plate as base frame, 8 ... Lower support plate as base frame.

Claims (1)

[Scope of utility model registration request] 1. A switch in which the input amount of a movable electrode with respect to a fixed electrode can be set at a locking position of a drive member of the movable electrode, wherein the locking position includes a plurality of flat surfaces of the driving member and its outer periphery. A polygonal adjustment stopper (13a,
34a) is provided and the stopper is fixedly mounted on the base frame (7, 8) or the like so as to be rotatable at a position eccentric from the center position thereof.