JPH04111129U - Switch contact pressure dimension adjustment mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the external dimensions of a vacuum circuit breaker. [Structure] A pin is installed between a movable contact 3 that faces the fixed contact 2 of the vacuum switch tube 1 and can move up and down, and an insulating rod 14 that moves as the shaft 16 rotates and brings the movable contact 3 into contact with the fixed contact 2. Upper link 1 connected by 13D
8 and the lower link 19 are axially mounted via pins 13C and 13E. Further, an adjustment mechanism 20 consisting of a rotatable screw rod 202 that adjusts the contact pressure dimension W by changing the clamping angle T is mounted between the pins 13C and 13E. [Effect] Since the adjustment mechanism is provided in the empty space of the link that previously functioned only as a link, the device can be downsized by the size of the adjustment mechanism.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an improvement in the structure of an adjustment mechanism that adjusts the contact pressure dimensions of the contacts of a vacuum circuit breaker. It is something to do.

0002

[Conventional technology]

Figures 4 and 5 show the contact pressure size adjustment mechanism of a conventional switch. An empty switch tube with a vertical motion that contacts the fixed contact 2 of this vacuum switch tube 1 from above. A male screw 4 is erected on the upper part of the movable contact 3, and a lock nut is attached to this male screw 4. 5 is screwed in, and the wipe rod 6 located directly above this lock nut 5 is screwed in. The wipe rod 6 is fitted with a coil-shaped contact pressure via a round washer 7. Spring spring 8 is inserted. The above lock nut 5 tightens the male screw 4 and the wipe rod 6. It has the function of fixing. Further, the wipe rod 6 has a cylindrical upper part. The lower part 6a is configured in a hexagonal shape so that a spanner can be applied. A female screw is engraved on the inner peripheral surface.

0003 In addition, a wipe link 9 is inserted into the wipe rod 6 and passes through it. Also, a bolt 10 is screwed into the upper part of the opening of the wipe rod through a round washer 7A. At the top of the wipe link 9, there is a roughly T-shape that rotates around the fixing pin 11. A link 12 is rotatably connected via a pin 13. One end of an insulating rod 14 is rotatably attached to the lower part via a pin 13A. Ru. A lever 15 is connected to the other end of the insulating rod 14 via a pin 13B. This lever 15 is fitted onto a rotatable shaft 16. .

0004 The insulating rod 14 connects the link 12 and the lever 15, and ・It has the function of electrically insulating 15. In addition, M in Fig. 4 is a vacuum switch. W indicates the distance between the movable contact 3 of the pipe 1 and the round washer 7A, and W indicates the contact pressure dimension. vinegar.

[0005] Therefore, when the shaft 16 rotates counterclockwise, the lever 15 rotates in the same direction. and pull the insulating rod 14 to the left, so that the link 12 is centered around the fixing pin 11. Rotate clockwise to press down the wipe link 9 while compressing the contact pressure spring 8, and remove the fixed contact. A movable contact 3 contacts point 2. Furthermore, in order to apply contact pressure to the contacts, the shaft 16 further rotates to compress the contact pressure spring 8 by the contact pressure dimension W. Above operation As a result, the vacuum circuit breaker shifts from the open state shown in FIG. 5 to the closed state shown in FIG.

[0006] By the way, in order to adjust the contact pressure dimension W, first loosen the lock nut 5 and remove the wipe rod. 6 and change the distance M to adjust the contact pressure dimension W. At this time, wipe the As the door 6 rotates, the round washer 7A and the bolt 10 rotate at the same time, but the rest It doesn't rotate. Once the adjustment is complete, tighten the lock nut 5 onto the wipe rod 6. to finish the work.

[0007]

[Problem that the idea aims to solve]

The contact pressure size adjustment mechanism of conventional switches is configured as described above, so the external size The problem was that the law was getting bigger.

[0008] The present invention was developed in view of the above, and it is possible to reduce the external dimensions of the switch by contact pressure. The purpose is to provide a dimension adjustment mechanism.

[0009]

[Means to solve the problem]

In this invention, in order to achieve the above-mentioned purpose, the fixed contact of the vacuum switch tube is A movable contact that can move up and down and a rotatable contact that can be brought into contact with a fixed contact. The link is mounted between the movable shafts, and the upper link is attached to the movable contact point. The upper link has a lower link which is pivotally connected to the link. The link is rotatably pivoted, and the pivot portion for the movable contact of the upper link and the lower link are connected to each other. Adjust the contact pressure dimension of the movable contact to the fixed contact between the pivot joint and the link of the It is characterized by a shaft-mounted adjustment mechanism.

0010 In addition, the above adjustment mechanism can be rotated to adjust the sandwiching angle between the upper and lower links. It is characterized by being constructed from screw rods.

[0011]

[Effect]

According to the present invention, the empty space of a link that previously only functioned as a link can be filled with By providing an adjustment mechanism, the device can be made smaller by the size of the adjustment mechanism. can be done.

0012

【Example】

Hereinafter, the present invention will be described in detail based on an embodiment shown in FIGS. 1 to 3. A male screw is attached to the lower part of the movable contact 3 that can move up and down and contacts the fixed contact 2 of the tube 1 from below. A screw 4 is attached vertically, and this male screw 4 has a block with a female screw carved into the inner circumferential surface of the hole. A block 17 is screwed to the bottom of the block 17 via a pin 13C. An upper link 18 is rotatably pivoted.

[0013] Further, a lower link 19 is connected to the free end of the upper link 18 via a pin 13D. The end of the lower link 19 is connected to the conventional example via a pin 13E. One end of an insulating rod 14 having a function similar to that of A wipe link 9A is connected to the other end of the insulating rod 14 via fixing pins 11A. Fixed. A cylindrical wipe rod 6A passes through this wipe link 9A. A bolt is inserted into the open end of the wipe rod 6A via a round washer 7A. A bolt 10 is screwed onto the wipe rod 6A, and a circular washer 7 is attached to the wipe rod 6A. A coil-shaped contact pressure spring 8 is fitted.

[0014] A lever 15 is rotatable at the end of the wipe rod 6A via a pin 13B. A rotatable shaft 16 is fitted to this lever 15. Ru.

[0015] On the other hand, between the pin 13C and the pin 13E, there is a dimension adjustment mechanism 2 according to the present invention. 0 is rotatably mounted on an axis, and this adjustment mechanism 20 has an upper block 2 attached to a pin 13C. 00 is rotatably pivoted, and this upper block 200 has a right-hand female screw on the inner peripheral surface. A threaded screw hole is drilled. Also, the lower block 201 is attached to the pin 13E. The lower block 201 has a left-hand female screw threaded on the inner peripheral surface. A screw hole is bored between the screw hole and the screw hole of the upper block 200. A screw rod 202 is rotatably mounted on the shaft. This screw rod 202 has an upper peripheral surface. A right-hand male screw is engraved on the top, a left-hand male screw is engraved on the bottom circumference, and the center has a hexagonal shape. It is now ready for a spanner to be applied. And the top and bottom of the screw rod 202 A right lock nut 203 and a left lock nut 204 for fixing are screwed into the portions, respectively. There is.

[0016] On the other hand, L is the distance between pin 13C and pin 13E, and T is the distance between pin 13C and pin 13D. The pinching angle formed by the connecting line and the line connecting pin 13D and pin 13E, W is the contact pressure dimension It is the law.

[0017] Therefore, when the shaft 16 rotates counterclockwise, the lever 15 rotates in the same direction. and push the insulating rod 14 to the right, and the adjustment mechanism 20 rotates counterclockwise around the pin 13D. direction, the movable contact 3 is pushed up, and the movable contact 3 contacts the fixed contact 2. difference In order to further apply contact pressure to the contact point, the shaft 16 rotates further to increase the contact pressure dimension W. Compress it by that amount. Through the above operations, the vacuum circuit breaker changes from the open state shown in Fig. 2 to Fig. 1. Shifts to the closed state shown.

[0018] Next, when adjusting the contact pressure dimension, rotate the screw rod 202 of the adjustment mechanism 20. Adjust the contact pressure dimension W by changing the distance L and the pinching angle T. And after adjustment, stop on the right. The nut 203 and the left stop nut 204 may be screwed to prevent them from loosening.

[0019] According to the above configuration, the empty space of a link that previously only functioned as a link. Since the adjustment mechanism 20 is installed at the base, the device can be adjusted by the size of this adjustment mechanism Can be made smaller.

[0020] In the above embodiment, a vacuum circuit breaker was used as an example, but a disconnector or other switchgear may also be used. However, the same effects as in the above embodiment can be achieved.

[0021]

[Effect of the idea]

As described above, according to the present invention, when the upper link is rotatably pivoted to the movable contact, In both cases, the lower link, which is pivoted to the upper link, is rotatably connected to the upper link. and a pivot portion for the movable contact of the upper link and a pivot portion for the link of the lower link. An adjustment mechanism that adjusts the contact pressure dimension of the movable contact against the fixed contact is mounted between the contact parts. Therefore, it is possible to reduce the size of the device by the size of the adjustment mechanism. There is an effect.

[0022] In addition, the adjustment mechanism is a rotatable screw that adjusts the sandwiching angle between the upper and lower links. Since it is composed of a rod, it is extremely easy to operate and the contact pressure dimensions can be adjusted extremely easily. It has the effect of being able to

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a closed state of a vacuum circuit breaker in a contact pressure dimension adjustment mechanism for a switch according to the present invention.

FIG. 2 is an explanatory diagram showing an open state of a vacuum circuit breaker in the contact pressure dimension adjustment mechanism of a switch according to the present invention.

FIG. 3 is an enlarged view of the main parts of the adjustment mechanism in the contact pressure dimension adjustment mechanism of the switch according to the present invention.

FIG. 4 is an explanatory diagram showing a closed state of a vacuum circuit breaker in a conventional switch contact pressure dimension adjustment mechanism.

FIG. 5 is an explanatory diagram showing an open state of a vacuum circuit breaker in a conventional switch contact pressure dimension adjustment mechanism.

[Explanation of symbols]

1 Vacuum switch tube 2 Fixed contact 3 Movable contact 6.6A wipe rod 8 Contact pressure spring 9.9A Fiplink 15 Lever 16 Shaft 18 Top link 19 Lower link 20 Adjustment mechanism 202 Spiral rod T pinch angle W Contact pressure dimension

──────────────────────────────────────────────── ───

[Procedural amendment]

[Submission date] August 1, 1991

[Procedural amendment 1]

[Name of document to be amended] Specification

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction details]

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a closed state of a vacuum circuit breaker in a contact pressure dimension adjustment mechanism for a switch according to the present invention.

FIG. 2 is an explanatory diagram showing an open state of a vacuum circuit breaker in the contact pressure dimension adjustment mechanism of a switch according to the present invention.

FIG. 3 is an enlarged view of the main parts of the adjustment mechanism in the contact pressure dimension adjustment mechanism of the switch according to the present invention.

FIG. 4 is an explanatory diagram showing a closed state of a vacuum circuit breaker in a conventional switch contact pressure dimension adjustment mechanism.

FIG. 5 is an explanatory diagram showing an open state of a vacuum circuit breaker in a conventional switch contact pressure dimension adjustment mechanism.

[Explanation of symbols] 1 Vacuum switch tube 2 Fixed contact 3 Movable contact 6.6A Wipe rod 8 Contact pressure spring 9.9A Wipe link 15 Lever 16 Shaft 18 Upper link 19 Lower link 20 Adjustment mechanism 202 Screw rod T Clipping angle W Contact pressure dimension

Claims (2)

[Scope of utility model registration request] Claim 1: Contact pressure of a switch in which a link is axially mounted between a movable contact that can move up and down facing a fixed contact of a vacuum switch tube and a rotatable shaft that brings this movable contact into contact with the fixed contact. In the dimension adjustment mechanism, an upper link is rotatably connected to the movable contact, a lower link which is pivotally connected to the link is rotatably connected to the upper link, and the movable contact of the upper link is rotatably connected to the upper link. A contact pressure size adjustment mechanism for a switch, characterized in that an adjustment mechanism for adjusting the contact pressure size of a movable contact with respect to a fixed contact is mounted between a pivot part for a lower link and a pivot part for a link of a lower link. 2. The contact pressure dimension adjustment mechanism for a switch according to claim 1, wherein the adjustment mechanism is comprised of a rotatable screw rod that adjusts the sandwiching angle between the upper link and the lower link.