JP2663760B2 - Switch device for circuit breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary switch device of a circuit breaker which is attached to an air circuit breaker as an auxiliary device and functions as an auxiliary switch.

[0002]

2. Description of the Related Art FIG. 1 shows a conventional switch device attached to a circuit breaker.
5 to 17 will be described. FIG. 15 is a plan view, FIG.
FIG. 17 is a sectional view taken along line XVI-XVI in FIG. 15, and FIG. 17 is a view showing the operation plate and the leaf spring. Reference numeral 1 denotes a plurality (six in the drawing) of microswitches, which are juxtaposed so that the actuators 1a face upward. Reference numeral 2 denotes two right and left side plates on which the microswitches 1 are skewed and fixed by tightening screws 3. Reference numeral 4 denotes an operation plate of the microswitch 1. A support portion 4A rotatably supported by both end plates 2 at both end plates 2 and a switch operation rod 5 of a circuit breaker engages with the other end extending from the support portion 4A. And an L-shaped portion 4B. 6
Is a leaf spring whose base is fixed to the support portion 4A of the operation plate 4, and each actuator 1 of the microswitch 1 is provided on the upper end side.
a engages.

[0003] As shown in FIG.
The switch operating rod 5 is disposed below the L-shaped portion 4B of the operating plate 4 in a state where the switch operating rod 5 is attached to the accessory device mounting base 8 disposed at the position shown in FIG. Then, the operation plate 4 rotates as indicated by the imaginary line with the shaft portions 4a at both ends as the fulcrum, and the actuator 1a is pressed by the leaf spring 6 to operate the microswitch 1.

[0004]

In the conventional switch device for a circuit breaker as described above, since the microswitches 1 are arranged in a row, if the number of microswitches 1 is increased, the total length becomes longer and a large accommodation space is required. In addition, when the total length is long, the operation plate 4 is long, and the operation plate 4 is deformed at the time of operation. .

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. By arranging the microswitches in the front and rear rows side by side, the total length can be shortened, the storage space can be shortened, and the operation plate can be shortened. It is an object of the present invention to obtain a switch device attached to a circuit breaker in which the deformation during operation is reduced and the time lag of the switch operation is reduced.

[0006]

A switch device attached to a circuit breaker according to the present invention comprises a front row of microswitches in which a plurality of actuators are arranged side by side, and a front row of microswitches. A rear row of microswitch groups, each of which is arranged in a plurality so as to face each actuator and each actuator faces downward, two left and right side plates that hold the two switch groups at an interval, and the two switch groups. An operation plate rotatably supported by the both side plates so that a rotation center is located between the upper and lower intermediate portions, and a switch operation rod of a circuit breaker is engaged with the other end extending downward in an L-shape from the support portion. An upper leaf spring whose lower end is supported in the vicinity of the rotation center of the operating plate and whose upper end engages with each actuator of the microswitch group in the front row; Those having a lower leaf spring which engages with the actuator of the rotation around the center to the supported upper side and lower side in the rear row of micro switches.

[0007]

In the present invention, the microswitch group can be arranged in the front and rear rows by operating the upper and lower leaf springs with the operating plate, so that the overall length is shortened and the operating plate is also shortened.

[0008]

An embodiment of the present invention will be described with reference to FIGS. 1 is a plan view, FIG. 2 is a view of FIG. 1 viewed from below,
3 is a cross-sectional view taken along the line III-III of FIG. 1, FIG. 4 is a view of FIG. 3 showing a leaf spring and an operation plate viewed from the left, FIG. 5 is a side view of the switch case, and FIG. 7 is a plan view of the right side plate, FIG. 8 is a view of FIG. 7 viewed from below, FIG. 9 is a view of FIG. 8 viewed from the right, FIG. 10 is a plan view of the left side plate, and FIG.
FIG. 12 is a view of FIG. 11 viewed from the right, and the same or corresponding parts as those of the related art are denoted by the same reference numerals and description thereof is omitted.

In FIG. 1, reference numeral 9 denotes a front row of microswitch groups each including a plurality (six in the drawing) of microswitches 1 such that each actuator 1a faces upward.
0 indicates a plurality of microswitches 1 (six in the drawing) such that each actuator 1a faces each actuator 1a of the microswitch group 9 in the front row and faces downward.
The rear row of microswitches arranged in parallel, 11 is an insulating plate disposed on both sides of each of the microswitches of both switch groups 9 and 10, and 12 and 13 hold both switch groups 9 and 10 with an interval 14 therebetween. Right and left side plate 1
Reference numeral 2 denotes a screw hole 12a of the tightening screw 3, a case mounting piece 12b, a stand engaging projection 12c, and a support hole 12d of the shaft 4a of the operation plate 4.
The left side plate 13 has an insertion hole 13a for the tightening screw 3.
, A case engaging projection 13b, a table mounting piece 13c, a table engaging projection 13d, and a support hole 13e of the shaft 4a of the operation plate 4. Reference numeral 15 denotes an upper leaf spring that is supported by the supporting portion 4A of the operating plate 4 and is engaged with each actuator 1a of the microswitch group 9 in the front row at the upper end. A lower leaf spring 17 supported and engaged at the lower end with each actuator 1a of the microswitch group 10 in the rear row, 17
A screw 18 fixed to A is a switch case for accommodating the two switch groups 9 and 10, an opening 18a on the left and right side, a notch 18b on the middle, a locking portion 18c protruding from one side, and a screw on the lower surface. It has an insertion slot 18d.

The micro switch group 9 in the front row and the micro switch group 10 in the rear row are fixed to the right and left side plates 1 by tightening screws 3.
2 and 13 and the operating plate 4 is also provided on the left and right side plates 12,
When it is held rotatably between 13, the attached switch device is completed as shown by the solid line in FIGS. This left side plate 13
After engaging the case engaging projection 13b with the locking portion 18c of the switch case 18 and inserting the same into the switch case 18,
A case mounting screw (not shown) is screwed into the screw hole 19 of the case mounting piece 12b of the right side plate 12 from the screw insertion long hole 18d on the bottom surface, and is housed and fixed in the switch case 18.

As shown in FIG. 1, the accessory switch device housed in the switch case 18 has a base engaging piece 12c of the right side plate 12, a mounting part 13c of the left side plate 13, and a base engaging protrusion 13d. Since it protrudes outward, it is placed on the mounting base 8 in a state where the base engaging piece 12c is locked on the locking portion 8a on the vertical surface of the mounting base 8, and then the screw hole 8 on the horizontal surface side of the mounting base 8 is formed.
A mounting screw (not shown) is screwed into b, and the base mounting piece 13c is fixed and fixed on the mounting base 8.

As shown by imaginary lines in FIGS. 2 and 3, the switch operating rod 5 is mounted on the mounting base 8 of the main body base 7.
Is located below the L-shaped portion 4B of the operating plate 4, so that when the switch operating rod 5 is pushed up in conjunction with the operation of the circuit breaker, the operating plate 4 is pivoted with the shaft portions 4a at both ends as imaginary lines in FIG. As shown, the actuators 1a are pushed by the upper and lower leaf springs 16 and 17 which rotate simultaneously, and the micro switch groups 9 and 10 in the front and rear rows operate simultaneously. Thus, the upper and lower two leaf springs 15 and 16 are
Operates, the microswitch group is moved to the front and rear rows 9, 10
Therefore, the overall length can be shortened and the operation plate 4 can be shortened.

Next, as shown in FIGS. 13 and 14, the tip 20a of the case mounting screw 20 screwed into the screw hole 19 of the case mounting piece 12b of the right side plate 12 from the outside of the switch case 18 through the screw insertion long hole 18d. Is extended so that the rear surface of the lower leaf spring 16 abuts, the stop position of the operation plate 4 is regulated to the position indicated by the solid line in FIG. 2. The tip of the character portion 4B does not protrude downward. Thus, the actuator 1
a and the leaf springs 15 and 16 are regulated, the energy at the time of collision of the leaf springs 15 and 16 with the actuator 1a is reduced, the wear of the leaf springs 15 and 16 is reduced, and the operating plate 4 is reduced. However, since it does not protrude and does not protrude, the mounting property is improved.

[0014]

As described above, according to the present invention, by arranging the microswitches in the front and rear rows in parallel, the overall length can be shortened, the accommodation space can be shortened, and the operation plate can be shortened during operation. The effect is obtained that the deformation is reduced and the time lag of the switch operation is reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a view of FIG. 1 as viewed from below.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a view of FIG. 3 showing a leaf spring and an operation plate, as viewed from the left.

FIG. 5 is a side view of the switch case.

FIG. 6 is a view of FIG. 5 as viewed from below.

FIG. 7 is a plan view of a right side plate.

FIG. 8 is a view of FIG. 7 as viewed from below.

9 is a view of FIG. 8 as viewed from the right.

FIG. 10 is a plan view of a left side plate.

FIG. 11 is a view of FIG. 10 viewed from below.

FIG. 12 is a view of FIG. 11 viewed from the right.

FIG. 13 is a view as seen from line XIII-XIII in FIG. 2;

FIG. 14 is a sectional view taken along line XIV-XIV in FIG. 3;

FIG. 15 is a plan view showing a conventional device.

16 is a sectional view taken along line XVI-XVI in FIG.

FIG. 17 is a view showing an operation plate and a leaf spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Micro switch 1a Actuator 3 Tightening screw 4 Operating plate 4A Supporting portion of operating plate 4B L-shaped portion of operating plate 5 Switch operating rod 8 Mounting stand 9 Micro switch group in front row 10 Micro switch group in rear row 12 Side plate 13 Side plate 15 On Side leaf spring 16 Lower leaf spring 18 Switch case 19 Side plate screw hole 20 Case mounting screw 20a Tip of case mounting screw

Claims (2)

(57) [Claims] 1. A front row of microswitches in which a plurality of actuators are arranged in a row so as to face upward, and a plurality of microswitches are arranged in a row so as to face each actuator of the front row of microswitches and face down each actuator. The rear row of microswitches that are provided, the two left and right side plates that hold the two switch groups at an interval, and the two side plates so that the center of rotation is located in the upper and lower middle between the two switch groups An operation plate, which is rotatably supported and extends downward in an L-shape from the support portion, to which a switch operation rod of a circuit breaker is engaged, and a lower end of which is supported near the rotation center of the operation plate. An upper leaf spring that engages with each actuator of the micro switch group in the front row at an upper end side; And a lower leaf spring that engages with each actuator of the micro switch group. 2. A front and rear row of microswitch groups, both side plates,
An operation plate, a switch case accommodating the upper and lower leaf springs, and a case mounting screw screwed into a screw hole of the side plate from outside of the switch case, and a tip of the case mounting screw is extended to extend the extended portion. 2. The switch device according to claim 1, wherein a stop position of said operating plate is regulated by contacting a back surface of said lower leaf spring.