KR101105212B1 - The transfer equipment for switch-lever of molded case circuit breaker - Google Patents

Abstract

PURPOSE: A switch-lever switching apparatus of a molded-case circuit breaker is provided to apply a ratchet with a single directional rotation property in a manual control part, thereby conveniently operating a driver in a narrow space. CONSTITUTION: A driver(1) generates and transfers power which is required for an ON/OFF switching process of a switch-lever. A driving body(2) is interlocked while being arranged in the lower side of the driver. The driving body switches the position of the switch-lever. A manual control part(3) manually operates the driving body. An assembly body(4) installs the driver, driving body, and manual control part on a molded-case circuit breaker.

Description

Switch lever switching device for circuit breaker {THE TRANSFER EQUIPMENT FOR SWITCH-LEVER OF MOLDED CASE CIRCUIT BREAKER}

The present invention relates to a switch lever switching device of a circuit breaker, and more particularly, to switch the switch lever of the circuit breaker to the ON / OFF position, so that the electric switching by the electric operation and the manual switching by the operator can be easily combined. It relates to a switch lever switching device of a circuit breaker.

Molded case circuit breaker (MCCB) refers to the power cut-off switch of the trunk branch circuit, which is used to protect the electrical system and electrical equipment from abnormal current (over current, short circuit, etc.). Mainly used for switchboard and control panel.

On the other hand, in the above-described circuit breaker, the switch lever exposed to the outside is switched to the ON / OFF and RESET positions, but the electric switching by electric operation (remote opening and closing) and the manual switching by user operation are performed. It is well known that additional switching devices, which are external accessories capable of direct opening and closing, are additionally installed.

For this purpose, through the domestic patent application No. 10-2008-0012963, instead of the existing method of the combination of the drive motor and reduction gear (Reduction gear), as a direct operation of the switch lever using an electronic linear actuator (Linear actuator) A remote control device for a circuit breaker is disclosed.

1 is a perspective view showing the structure of a remote operation device of a circuit breaker according to the prior art. As shown in FIG. 1, the remote operation device (hereinafter referred to as "switching device") of the conventional circuit breaker described above is an electronic linear. Due to the formation of reaction force according to the characteristics of the actuator 900, the closed point indicated in the existing drive motor and reduction gear combination method that requires more force than manual switching by the operator is still not resolved. In order to quickly switch the on / off position of the switch lever (b-1), there was a great inconvenience.

Moreover, in the case of the manual switching described above, it causes inconvenience that the operator must always carry a separate tool (operation handle, etc.) necessary for switching the switch lever b-1 to the ON / OFF position, or Problems such as the need to additionally provide an accommodating part for storing the above-described separate tool in the circuit breaker (b) or the main body of the switching device.

An object of the present invention is to solve the above problems, further comprising a manual operation unit combining a ratchet having a one-way rotationality to the operation handle on the rolling element for switching the position of the switch lever through the power of the drive motor. Combination, to provide a switch lever switching device of the circuit breaker to facilitate the electric conversion using a rolling element as well as a manual conversion using a manual control unit.

Another object of the present invention is to provide a drive body moved forward and backward for the purpose of switching the position of the switch lever, separated by the interlocking block and the buffer block, so as to absorb (buffer) the repulsive force during the switch lever position switching. The present invention provides a switch lever switching device for a circuit breaker.

The present invention to achieve the above object, the rolling element for the formation and transmission of power required for switching the switch lever ON / OFF position of the circuit breaker; A drive body interlocked with the rolling element in a lower linkage to change the position of the switch lever; A manual operation part capable of manually operating the driving body as it is additionally mounted on one side of the rolling element; And an assembly for assembling and assembling the rolling member, the driving member, and the manual control unit, and being fixedly mounted on the circuit breaker.

In addition, the rolling element is a drive motor having a drive shaft that rotates by the supply of an external power source, a vertically arranged to be orthogonal to the drive shaft and the rotational shaft to form a coordinated rotation by the drive shaft, the drive shaft and the rotation shaft The first bevel gear for transmitting the rotational power of the drive shaft to the rotational shaft in a coupled state and the rotational movement by simultaneous rotation while further coupled to the lower end of the rotational shaft in a linear motion to the drive body It is characterized by consisting of a rotating disk for conversion transfer.

In addition, the assembly, the base plate is fixed to the upper end of the circuit breaker, the main bracket which can be internally assembled to the driving body as laminated on the upper end of the base plate, and further by being laminated on the top of the main bracket It is characterized by consisting of a sub-bracket to assemble and combine the rolling element and the manual control unit.

In addition, the drive body, the slider which is capable of moving forward and backward corresponding to the eccentric axis orbital movement while being protruded on the bottom surface of the rotating disk, and is fixed and assembled in the assembly through the both ends of the slider Accordingly, it is characterized by consisting of a plurality of guide shafts that can guide the forward, backward movement of the slider.

In addition, the manual operation unit is coupled to the assembly using a hinge shaft, the operation handle which is directly operable by the operator, and further provided between the operation handle and the hinge shaft and the rotation using the operation handle And a second bevel gear configured to transmit a rotational force of the hinge shaft to the pivot shaft in a state in which the ratchet is configured to achieve a coaxial rotation in one direction, and further coupled to the hinge shaft and the pivot shaft.

In addition, the upper end of the sub-bracket, it characterized in that the switching panel for the device operation setting conversion to the electric or manual further provided.

In addition, the slider, the interlocking block is moved forward and backward corresponding to the orbital movement of the eccentric shaft, and move together in a state of being assembled and assembled on one side of the interlocking block to achieve the position change of the switch lever A buffer block capable of absorbing the repulsive force during the rotation of the switch lever, and an elastic spring for enabling the buffering function of the buffer block for absorbing the repulsive force of the switch lever in a state of being assembled to the interlocking block and the buffer block. One or more shaft bolts for guiding the buffering action spaced apart and restored from one side of the interlocking block while the interlocking block and the cushioning block are coupled to the elastic spring, and the shaft bolt on the interlocking block. Fastening nut is assembled and fixed, the elastic soup in the state inserted into the inner end of the interlocking block The spring holder is configured to support one end of the ring and to maximize the elastic force of the elastic spring to restore the original position of the buffer block spaced apart from the interlocking block due to the repulsive force of the switch lever.

In addition, in the interlocking block, a horizontal groove is formed inwardly across both upper ends in consideration of the insertion and the orbital movement of the eccentric shaft, and a first through hole for coupling with the fastening nut passes through the center portion along the moving direction of the slider. Characterized in that formed.

In addition, the buffer block, the lever receiving hole for the intrinsic acceptance of the switch lever is provided in the central portion, the inner wall surface of the both sides of the lever receiving hole protruding to form a plurality of contact protrusions that the switch lever can be in contact with each other. It is characterized by.

In addition, the head of the shaft bolt, characterized in that the other ring is further fastened to support the other end of the elastic spring to prevent separation.

As apparent from the above description, the switch lever switching device of the circuit breaker of the present invention can easily perform the manual switching of the switch lever without the need for a separate tool through the direct operation of the rolling element using the manual control unit. It can bring effects.

In addition, by applying a ratchet having a one-way rotational characteristics to the manual operation unit, the rolling element can be conveniently operated even in a narrow work space, thereby maximizing the work efficiency and associating with the rolling element. It is effective in eliminating the loss.

In addition, as the slider of the rolling element is capable of buffering the repulsive force (operation shock) generated when the position of the switch lever is shifted, it is possible to prevent durability degradation such as damage to the slider due to fatigue accumulation due to shock transfer. It is a very useful invention for showing the device performance.

1 is a perspective view showing the structure of a remote operation device of a circuit breaker according to the prior art;
2 and 3 are a perspective view and a side view showing the external structure of the switch lever switching device of the circuit breaker according to the present invention.
Figure 4 is a main part perspective view showing the relationship between the rolling element and the manual control unit in the switch lever switching device of the circuit breaker according to the present invention.
5A and 5B are a main part perspective view and a main sectional view showing an internal and external structure of a drive body in a switch lever switching device of a circuit breaker according to the present invention;
6A and 6B are main cross-sectional views showing the operating relationship of the drive body in the switch lever switching device of the circuit breaker according to the present invention;
7a and 7b is a state diagram showing an embodiment of a switch lever switching device of the circuit breaker according to the present invention.
8 is an operating state diagram showing an example of the use of the manual control unit in the switch lever switching device of the circuit breaker according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

2 and 3 are a perspective view and a side view showing the external structure of the switch lever switching device of the circuit breaker according to the present invention, Figure 4 is a rolling element and a manual in the switch lever switching device of the circuit breaker according to the present invention. Fig. 5A and Fig. 5B are main part perspective views and main sectional views showing internal and external structures of the drive body in the switch lever switching device of the circuit breaker according to the present invention.

6A and 6B are main cross-sectional views showing the operating relationship of the driving body in the switch lever switching device of the circuit breaker according to the present invention, and FIGS. 7A and 7B are views of the switch lever switching device of the circuit breaker according to the present invention. The use state diagram showing the embodiment, the wiring breaker (b) is an operating state diagram showing an example of the use of the manual control unit in the switch lever switching device of the wiring breaker according to the present invention.

As shown in Figures 2 and 3, the switch lever switching device (A) of the circuit breaker according to the present invention, the rolling element for the formation and transmission of power required for switching the switch lever ON / OFF position of the circuit breaker (1) ) And a drive body 2 interlocked with the rolling element 1 underneath and interlocked to switch the position of the switch lever, and the driving unit is additionally mounted on one side of the rolling element 1. It is possible to fix and mount the upper part of the circuit breaker together with the manual operation part 3 which manually operates the sieve 2 and the assembly of the rolling element 1 and the driving body 2 and the manual operation part 3 together. It is configured to include an assembly (3) for.

The rolling element 1 is a power means that can be driven remotely and directly by an operator by an electric operation through an external power supply. As shown in FIG. 4, a driving shaft rotating in accordance with an external power supply ( A drive motor 11 having a 11-1, a rotational shaft 12 vertically arranged to be orthogonal to the drive shaft 11-1, and having a cooperative rotation by the drive shaft 11-1, and the drive shaft A first bevel gear 13 for transmitting the rotational power of the drive shaft 11-1 to the rotation shaft 12 in a state of being coupled to the 11-1 and the rotation shaft 12; It is composed of a rotating disk 14 for converting and transmitting the rotational movement by the simultaneous rotation to the drive body 2 in a linear motion while further coupled to the lower end of the rotating shaft 12.

On the other hand, the first bevel gear 13 is a conical gear used to transmit a motion between two axes that cross each other, the first horizontal gear 131 is coupled to the drive shaft (11-1) and the It is preferably made of a combination of the second horizontal gear 132 is provided coupled to the rotating shaft (12).

Then, at one side edge of the bottom surface of the rotating disk 14, orbital movement for the purpose of converting the rotational movement of the rotational shaft 12 into a linear movement and transmitting it to the drive body (2). The eccentric shaft 141 is formed to protrude downward a predetermined length.

The driving body 2 is an operation means for switching the switch lever of the circuit breaker to the ON / OFF position by receiving power from the rolling element 1, as shown in FIGS. 5A and 5B. A slider 21 capable of moving forward and backward in response to the orbital movement of the eccentric shaft 141 protruding from the bottom of the rotating disk 14, and penetrating both ends of the slider 21; It is composed of a plurality of guide shaft (22) which can be guided forward and backward movement of the slider 21 as fixed assembly in (4).

The slider 21 is a small interlocking block 211, which is moved forward and backward in response to the orbital movement of the eccentric shaft 141, and in a state of being assembled and linked to one side of the interlocking block 211 together. It is composed of a large buffer block 212 for absorbing the repulsive force during the switch lever rotation operation while being able to move the position of the switch lever.

In addition, the interlocking block 211 and the buffer block 212 in the state coupled to the elastic spring 213 to enable the buffering action of the buffer block 212 for absorbing the repulsive force of the switch lever, and the linkage For guiding the cushioning action, the buffer block 212 is spaced or restored from one side of the interlocking block 211 while providing the coupling between the elastic spring 213 between the block 211 and the buffer block 212. It further includes one or more shaft bolts (214).

In addition, one end of the elastic spring 213 in a state of being inserted into the inner end of the coupling nut 215 and the coupling bolt 211 is fixed to the shaft bolt 214 to the interlocking block 211. While maximizing elasticity of the elastic spring 213 to restore the original position of the buffer block 212 spaced apart from the interlocking block 211 along the fastening nut 215 due to the repulsive force of the switch lever. The spring holder 216 is further configured.

In the interlocking block 211, horizontal grooves 211a are formed inwardly across both sides of the rotating disk 14 in consideration of the insertion range of the eccentric shaft 141 and the orbital movement, and the fastening nut 215 is provided. A first through hole 211b for coupling is formed in the center portion along the moving direction of the slider 21.

In addition, each of the both ends of the first through hole (211b), the holder accommodating hole (211b-1) for the internal assembly of the spring holder 216, and the nut accommodating hole for the internal assembly of the fastening nut (215) Preferably, (211b-2) is expanded.

In the buffer block 212, a plurality of second through holes 212a for inserting the guide shaft 22 are formed in both sides in the longitudinal direction, respectively, and accommodate the lever for accommodating the switch lever of the circuit breaker. A hole 212b is provided in the center portion, and both contact inner walls 212b-1 of the lever receiving hole 212b are formed to protrude so as to face each other.

In addition, as the first hole 211b of the interlocking block 211 is connected to each other, the spring arrangement hole 212c capable of incorporating the elastic spring 213 and the shaft bolt 214 is formed at one side. have.

On the other hand, the head of the shaft bolt 214, it is preferable that the e-ring (214-1) for supporting the other end of the elastic spring 213 to prevent the separation is further fastened. .

The manual operation unit 3 switches the circuit breaker b as described above through direct (manual) drive of the rolling element 1 by an operator in a state in which the driving motor 11 of the rolling element 1 is excluded. Lever (b-1) is an operation means for manually switching the ON / OFF position, as shown in Figures 4 and 8, coupled to the assembly 4 by using a hinge shaft 311 to the operator One-way rotation of the rotation shaft 12 utilizing the operation handle 31 by further combining and coupling between the operation handle 31 and the operation handle 31 and the hinge shaft 311 to enable direct operation by The ratchet 32 and the second to transmit the rotational power of the hinge shaft 311 to the rotating shaft 12 in a state further provided coupled to the hinge shaft 311 and the rotating shaft 12 to achieve a Bevel gear 33 is composed.

On the other hand, an insertion hole 31a through which the protruding locking piece is inserted into one side of the switching panel of the assembly 4, which will be described later, is formed on the upper side of the pivoting end of the manipulation handle 31.

The ratchet 32, as shown in Figure 4, for the purpose of one-way rotation of the hinge axis 311, the ratchet pole 321 and the ratchet pole 321 can only rotate in one direction by the ratchet pole 321 It is preferable that the wheel 321 be a combination.

Like the first bevel gear 13, the second bevel gear 33 is a conical gear used to transmit a motion between two axes that intersect each other, and a second bevel gear 33 is coupled to the hinge shaft 411. It is preferably made of a combination of the horizontal gear 331, the second horizontal gear 332 is further provided coupled to the rotation shaft (12).

The assembly 4 is a circuit breaker (b) using the switch lever switching device (A) of the present invention to achieve a single linkage structure of the rolling element (1), the driving body (2), and the manual operation unit (2). 1 and 2, the base plate 41 is assembled and fixed to the upper end of the circuit breaker (b) as shown in Figs. 1 and 2, and the base plate (). 41 is laminated on the main bracket 42 and the main bracket 42, which is able to internally assemble the drive body 2, and the rolling element 1 and the manual operation unit 3 by It consists of a sub bracket 43 which can be assembled and assembled.

The main bracket 42 preferably has a box-type structure in which a flow space 42a is provided inside for accommodating the driving body 2 and moving the slider 21 forward and backward.

The sub-bracket 43 is provided with an assembly space (43a) that can accommodate the rolling element 1 inward, the motor bracket 431 for fixing the assembly of the drive motor 11, and the Side bracket 432 for the coupling of the manual operation unit 3, the front bracket 433 and the shielding plate to surround the first and second bevel gears 13, 33 including the rotating shaft 11 434 and a top plate 435.

In addition, the upper plate 435 further includes a switching panel 436 for converting the operation setting of the switch lever switching device A of the present invention into a motorized or manual manner through a switching action according to the movement in both directions. .

To this end, at one end of the switching panel 436, it is inserted into the insertion hole 31a of the operation handle 31 to constrain the operation handle 31 or withdraw from the insertion hole 31a. A locking piece 436-1 for protruding free rotation of the handle 31 is formed.

Unexplained reference numeral (c) is a lid-type case, (s) is a limit switch required to stop the operation of the drive motor corresponding to the position shift of the switching panel, (t) is to the drive motor and the limit switch Terminal block for wiring of external power supply.

The operation of the switch lever switching device A of the circuit breaker according to the present invention having the above configuration will be described in detail as follows.

As is well known, the normal circuit breaker (b) is mainly used to cut off the power supply of the gang low voltage trunk line branch circuit. As shown in Fig. 7A, the circuit breaker (b) is used between electrical wirings for overcurrent and short circuit protection.

In addition, the switch lever switching device (A) according to the present invention, the wiring breaker (b) for the purpose of opening and closing the switch lever (b-1) to the remote (electric) or direct (manual) opening and closing by the operator. In addition to).

For the above-mentioned purposes, the base plate 41 of the assembly 4 is seated and fixed at the upper end of the circuit breaker b to which the switch lever b-1 is first exposed, and at the same time, the switch The lever b-1 is positioned to be accommodated in the lever accommodation hole 212b formed at the center of the buffer block 212 of the slider 21 of the drive body 2.

In this way, after the mounting of the switching device A according to the present invention on the circuit breaker b using the base plate 41 is completed, the housing c is covered with the rolling element ( 1) and the driving body 2 and the external exposure of the manual control unit 3 and the assembly 4 are blocked, so that an electrical accident such as a short circuit due to the infiltration of various foreign substances such as moisture is not generated.

On the other hand, the switch lever (b-1) of the circuit breaker (b) is normally in the ON state to maintain the energized state of the electrical wiring by the circuit breaker (b), due to the abnormal current Prevention of an accident is possible by switching the position of the switch lever (b-1) in the OFF direction with the switching device (A) of the present invention.

To this end, by first supplying external power to the drive motor 11 of the rolling element 1, the rolling element 1 is operated remotely (electric) to start operation. For this reason, the slider 21 of the driving body 2 is moved in the opposite direction along the guide shaft 22 and the switch lever embedded in the flow space 42a of the buffer block 212. b-1) is forced to turn to the OFF position.

That is, the power supply for driving the driving motor 11 is possible through a wire connected to the terminal block T coupled to the upper plate 435, and the driving shaft 11-1 of the driving motor 11 is provided. The rotating shaft 12 of the rolling element 1 is chain-rotated by rotation and interlocking of the first bevel gear 13.

Subsequently, as the rotating disk 14 at the end of the rotating shaft 12 rotates together, the eccentric shaft 141 of the rotating disk 14 performs an orbital motion, and the driving body performs a linear motion in connection with the orbital motion. By the slider 21 of (2), as shown in FIG. 7B, the position switching of the switch lever b-1 can be easily achieved.

Here, as shown in Figure 6b, the repulsion (impact) force during the rotation operation of the switch lever (b-1) is in contact with the contact protrusion (212b-1) as soon as the buffer block 212 is the linkage Depending on the action away from the block 211 can be absorbed, while also suppressing the noise.

On the other hand, after the repulsive force of the switch lever (b-1) as described above is extinguished, as shown in Figure 6a, the buffer block 212 is in close contact with the interlocking block 211 to achieve a restoring action Bar, the elastic block 213 by the elastic force of the buffer block 212 is made smoothly according to the action relationship to move along the shaft bolt 214.

On the other hand, in order to manually switch the position of the switch lever b-1, the restraint of the locking piece 436-1 of the switching panel 436 first introduced into the insertion hole 31a is released. do.

This is achieved by moving the switching panel 436 to the opposite position of the locking piece 436-1, and the limit switch s is switched at the same time as the position movement of the switching panel 436. The supply of external power through the terminal block t is cut off to maintain the operation stop state of the driving motor 11.

In this state, the operator manually grips the operation handle 31 of the manual operation unit 3 by hand, and then, as shown in FIG. It is possible to operate the coaxial 12 manually.

At this time, according to the one-way rotational action of the hinge shaft 311 by the ratchet 32 is further provided between the operation handle 31 and the hinge shaft 311, the operation handle 31 is Even if it is reciprocated up and down, the slider 21 of the drive body 2 for switching the switch lever b-1 to the OFF position also continues as the direction of rotation through the second bevel gear 33 continues. It is to keep moving in one direction.

For reference, by attaching proximity sensors (not shown) to both inner wall surfaces of the main bracket 42, the operation of the driving motor 11 is stopped or the slider 21 is detected by detecting the proximity of the slider 21. Of course, by notifying the operator of the approach of the warning, it is natural that the final moving range of the slider 21 can be controlled.

As described above, the present invention has been described in detail by using a preferred embodiment, but the scope of the present invention is not limited to the specific embodiment, it should be interpreted by the appended claims. In addition, those of ordinary skill in the art that various modifications can be made without departing from the scope and spirit of the present invention.

A: switching device, 1 rolling element, 2 driving element
3: manual control unit 4: assembly, 11: drive motor
11-1: drive shaft, 12: rotating shaft, 13: first bevel gear
14: rotating disk, 21: slider, 22: guide shaft
31: operation handle, 31a: insertion hole, 32: ratchet
33: second bevel gear, 41: base plate, 42: main bracket
42a: flow space, 43: sub bracket, 43a: assembly space
131: first horizontal gear, 132: first vertical gear, 141: eccentric shaft
211: interlocking block, 211a: horizontal groove, 211b: first through
211b-1: holder accommodation hole, 211b-2: nut accommodation hole, 212 buffer block
212a: second through hole, 212b: lever receiving hole, 212b-1: contact protrusion
212c: Spring arrangement hole, 213: Elastic spring, 214: Shaft bolt
214-1: E-ring, 215: Fastening nut, 216: Spring holder
311: hinge shaft, 321: ratchet wheel, 322: ratchet pole
331: second horizontal gear, 332: second vertical gear, 431: motor bracket
432: side bracket, 433: front bracket, 434: shield plate
435: top plate, 436: switching panel, 436-1: locking piece

Claims (10)

A rolling element for forming and transmitting power required for switching the switch lever ON / OFF position of the circuit breaker;
A drive body interlocked with the rolling element in a lower linkage to change the position of the switch lever;
A manual operation part capable of manually operating the driving body as it is additionally mounted on one side of the rolling element; And,
And an assembly for assembling and coupling the rolling element, the driving body, and the manual control unit and being fixedly mounted on the circuit breaker.
The method of claim 1,
The rolling element is a drive motor having a drive shaft that rotates by the supply of external power;
A rotational shaft disposed vertically to be perpendicular to the driving shaft, the rotational shaft being connected by the driving shaft;
A first bevel gear for transmitting rotational power of the drive shaft to the pivot shaft in a state coupled to the drive shaft and the pivot shaft;
The switch lever switching device of the circuit breaker, characterized in that consisting of a rotating disk for converting and transmitting the rotational motion by the simultaneous rotation to the drive body in a linear motion while further coupled to the lower end of the rotating shaft.
The method of claim 1,
The assembly, the base plate is fixed to the top of the circuit breaker for assembly;
And stacked on top of the base plate, the main bracket to be able to internally assemble the drive body,
The switch lever switching device of the circuit breaker, it characterized in that it is further stacked on top of the main bracket, consisting of a sub-bracket to assemble and couple the rolling element and the manual operation.
The method of claim 2,
The drive unit may include a slider capable of moving forward and backward corresponding to an eccentric shaft that is orbitally moved while protruding from the bottom surface of the rotating disk;
And a plurality of guide shafts configured to penetrate both ends of the slider and to be fixedly assembled in the assembly, thereby guiding forward and backward movement of the slider.
The method of claim 2,
The manual operation unit, and the operation handle is enabled to be operated directly by the operator as it is coupled to the assembly using a hinge shaft,
A ratchet further coupled between the operation handle and the hinge shaft to achieve one direction rotation of the rotation shaft utilizing the operation handle;
And a second bevel gear configured to transmit the rotational power of the hinge shaft to the pivot shaft in a state of being further coupled to the hinge shaft and the pivot shaft.
The method of claim 3,
On the upper end of the sub-bracket, the switch lever switching device of the circuit breaker, characterized in that the switching panel is further provided for switching the operation setting of the electric or manual.
The method of claim 4, wherein
The slider, the interlocking block is moved forward and backward corresponding to the orbital movement of the eccentric shaft,
A buffer block capable of absorbing repulsive force during rotation of the switch lever while moving together in an assembled state on one side of the interlocking block to achieve position switching of the switch lever;
An elastic spring which enables the buffering function of the buffer block for absorbing the repulsive force of the switch lever in an assembled state to the interlocking block and the buffer block;
At least one shaft bolt for guiding coupling of the elastic spring between the interlocking block and the buffer block, for guiding a buffering action in which the buffer block is spaced and restored from one side of the interlocking block;
A fastening nut for assembling and fixing the shaft bolt to the interlocking block;
While supporting the one end of the elastic spring in the state inserted into the inner end of the interlocking block, the elastic spring of the elastic spring is maximized to restore the original position of the buffer block spaced apart from the interlocking block due to the repulsive force of the switch lever Switch lever switching device of the circuit breaker, characterized in that consisting of the spring holder.
The method of claim 7, wherein
In the interlocking block, horizontal grooves are formed inwardly across both upper ends in consideration of the insertion and the orbital movement of the eccentric shaft.
The switch lever switching device of the circuit breaker, characterized in that the first through hole for the coupling coupling of the fastening nut is formed through the center portion in the moving direction of the slider.
The method of claim 7, wherein
The buffer block is provided with a lever receiving hole in the center for the internal acceptance of the switch lever,
Switch lever switching device of the circuit breaker, characterized in that the projecting formed on the inner wall surface of the both sides of the lever receiving hole so that a plurality of contact protrusions that can be in contact with the switch lever.
The method of claim 7, wherein
The head of the shaft bolt, the switch lever switching device for a circuit breaker, characterized in that the other ring is further fastened to support the other end of the elastic spring to prevent separation.

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