WO2024219599A1 - Input counting device of circuit breaker - Google Patents

Abstract

The present invention relates to an input counting device of a circuit breaker, and to an input counting device of a circuit breaker, the device counting the number of inputs of the circuit breaker, which includes a fixed contact, a movable contact and an opening/closing device having a rotary shaft, and comprising: a driving arm coupled to the rotary shaft; an indicator for displaying the number of inputs; a counting lever which is rotatably provided at one side of the indicator and which counts the number of inputs; an action pin which can come in contact with the driving arm and which is disposed so as to be liftable/lowerable; an operating lever having one end portion disposed to be able to push the counting lever; and a buffer spring extendably interposed between the action pin and the operating lever, wherein the driving arm is disposed to be capable of pressing the action pin during the input of the opening/closing device. Therefore, the number of inputs (on) can be counted during input, and driving force can be buffered and transmitted.

Description

Circuit breaker input counting device

The present invention relates to a circuit breaker input counting device.

As is well known, a circuit breaker or circuit breaker is an electrical protection device installed between a power source and a load device to protect the load device and line from a possible fault current (large current due to a short circuit, ground fault, etc.) that may occur in an electric circuit.

These circuit breakers include air circuit breakers, which are placed on relatively low-voltage transmission and distribution lines, and vacuum circuit breakers, which are placed on relatively high-voltage transmission and distribution lines.

The above-mentioned air circuit breaker comprises a current-carrying part having a movable contactor and a fixed contactor, a detection part that detects a fault current, and a switching mechanism that moves the movable contactor based on a detection signal of the detection part.

The above vacuum circuit breaker comprises a vacuum interrupter having a fixed contactor and a movable contactor, a detection unit that detects a fault current, and a switching mechanism that moves the movable contactor based on a detection signal of the detection unit.

Fig. 1 is a drawing showing an example of a switching mechanism of a conventional circuit breaker. As shown in Fig. 1, a switching mechanism (10) of a conventional circuit breaker has a frame (20) and a mechanism part (30).

The above frame (20), although not specifically shown in the drawing, is provided on one side (front in the drawing) of the current-carrying section of an air circuit breaker or the vacuum interrupter of a vacuum circuit breaker.

The above frame (20) has a first side plate (21) and a second side plate (22) that are spaced apart from each other in parallel, and an upper side plate (23) provided on the upper side of the first side plate (21) and the second side plate (22).

An on button (31) and an off button (32) are provided in the internal space of the first side plate (21), the second side plate (22), and the upper side plate (23).

As is known, the above-mentioned on button (31) is provided to cause an input operation in which a movable contactor (not shown) comes into contact with a fixed contactor (not shown) when pressed.

The above off button (32), as is known, is provided to cause a blocking operation in which the movable contactor is separated (separated) from the fixed contactor when pressed.

The mechanism (30) is provided on the lower side of the above-mentioned on button (31) and off button (32).

The above mechanism (30) is configured to include a plurality of links and a plurality of springs that are connected to each other so that they can move relative to each other so that the insertion operation and the blocking operation can be performed respectively when the on button (31) and the off button (32) are pressed, although not specifically shown in the drawing.

In the inner lower region of the first side plate (21) and the second side plate (22), an input spring (not shown) that provides elastic force to move the movable contactor toward the fixed contactor, a crank assembly (49) for accumulating the elastic force of the input spring, and a cam assembly to be described later are provided.

The above cam assembly is configured to rotate the charging region and the discharging region along one direction in the circumferential direction around the rotation axis (41).

FIG. 2 is a drawing showing the rotational axis of the opening/closing mechanism of FIG. 1 and the opening/closing counting device, FIG. 3 is a perspective view of the operating lever of FIG. 2, and FIGS. 4 to 6 are drawings each for explaining the operation of the opening/closing counting device of FIG. 2. As shown in FIG. 2, the cam assembly (40) has a rotational axis (41) and a plurality of cam plates (45) coupled to the rotational axis (41).

The above plurality of cam plates (45) each have a disc shape.

Meanwhile, the above-mentioned rotation shaft (41) is provided with a circuit breaker opening/closing counting device (50) that counts the number of opening/closing times of the above-mentioned opening/closing mechanism (10).

The above-mentioned opening/closing counting device (50) is configured to include an indicator (51) that indicates the number of openings/closings, a count lever (55) that is rotatably provided on one side of the indicator (51) to count the number of openings/closings, and an operating lever (60) that operates the count lever (55) in conjunction with the opening/closing mechanism (10).

On one side of the indicator (51) and the counter lever (55), a supporter (70) is provided to support the indicator (51) and the counter lever (55).

The above supporter (70) is implemented in an “L” shape.

The above supporter (70) has a front part (71) to which the indicator (51) is coupled, and a side part (73) that is bent from the front part (71) and coupled to the opening/closing mechanism (10) (second side plate (22)).

An opening (72) is formed in the front part (71) of the above supporter (70) through which the operating lever (60) can be withdrawn.

The above supporter (70) is connected to the opening/closing mechanism (10) (second side plate (22)).

A fastening member that is fastened to the opening/closing mechanism (10) is provided on the side (73) of the above supporter (70).

The above counter lever (55) is provided on one side (right side in the drawing) of the indicator (51).

The above counter lever (55) has a rotation axis (56), a lever portion (57) protruding along the radial direction of the rotation axis (56), and a protrusion (58) protruding from an end of the lever portion (57).

The above operating lever (60) is configured to rotate in the up-down direction.

Although not specifically shown in the drawing, a counter lever spring is provided inside the indicator (51) to apply elastic force to return the counter lever (55) to its initial position where it is positioned on the upper side.

By this, the counter lever (55) is maintained in the initial upper position when no external force is applied.

One side of the above operating lever (60) is configured to contact the cam plate (45) and rotate in the up-and-down direction.

As shown in FIG. 3, the above-described operating lever (60) is provided with an operating lever body (61), a contact pin (63) that protrudes from one side (right side in the drawing) of the operating lever body (61) and is capable of contacting the cam plate (45), and a pressing portion (64) that is provided on the other side (left side in the drawing) of the operating lever body (61) and presses the protrusion (58) of the counter lever (55).

The above operating lever (60) rotates downward when the contact pin (63) is pressed by the cam plate (45) and presses the counter lever (55) downward, thereby causing the counter lever (55) to rotate downward.

The above operating lever body (61) has a rotation shaft hole (62) formed through it so that the rotation shaft provided in the supporter (70) can be accommodated in a relative motion. As a result, the operating lever body (61) rotates up and down with respect to the supporter (70) about the rotation shaft.

The above pressurizing portion (64) is configured with a first bend portion (65) bent from an end of the operating lever body (61) and a second bend portion (66) bent from the first bend portion and positioned between the counter lever (55) and the indicator (51).

The above contact pin (63) is positioned to penetrate the supporter (70) and contact the outer surface of the cam plate (45).

A contact pin receiving hole (74) is formed through the supporter (70) so that the contact pin (63) of the operating lever (60) can be received in a manner that allows relative movement.

The above contact pin receiving hole (74) is configured in an arc shape corresponding to the rotational trajectory of the above contact pin (63).

By this configuration, the operating lever (60) is coupled so that the pressurizing portion (64) is pulled out through the opening (72) of the supporter (70), and the contact pin (63) is inserted into the contact pin receiving hole (74) so that the rotation shaft is received inside the rotation shaft hole (62).

When the side portion (73) of the above supporter (70) comes into contact with the second side plate (22) of the opening/closing mechanism (10), the fastening member is fixed by being joined to the second side plate (22).

At this time, the contact pin (63) is configured to contact and pressurize the outer surface of the cam plate (45).

Specifically, as shown in Fig. 2, the outer surface of the cam plate (45) is provided with a pressure release portion (46) for releasing the pressure of the contact pin (63). The pressure release portion (46) is provided with a first section (47) that is cut linearly from the circumference of the cam plate (45) and a second section (48) that is sunken inward from the first section (47).

When discharging the above opening/closing mechanism (10), as shown in Fig. 4, the contact pin (63) comes into contact with one side circumference of the pressure release portion (46) of the cam plate (45).

At the initial stage of charging when the above-mentioned opening/closing mechanism (10) starts charging, as shown in Fig. 5, as the cam plate (45) rotates counterclockwise in the drawing, the contact pin (63) faces the pressure release portion (46). At this time, the operating lever (60) rotates upward by the elastic force of the counter lever spring of the counter lever (55).

As the cam plate (45) continues to rotate counterclockwise, as shown in Fig. 6, the contact pin (63) passes through the pressure release portion (46) of the cam plate (45) and comes into contact with the circumference to be pressed downward.

When the above contact pin (63) comes into contact with the circumference of the cam plate (45), the operating lever (60) is pressed downward and rotates downward around the rotation axis.

As the above operating lever (60) rotates downward, the pressure portion (64) of the above operating lever (60) rotates downward, and at this time, the protrusion (58) of the above counter lever (55) is pressed downward by the pressure portion (64).

The above-mentioned count lever (55) rotates downward to count the number of openings and closings, thereby indicating that the number of openings and closings of the opening/closing mechanism (10) has increased by 1.

However, in the conventional circuit breaker's switching counting device (50), the switching count displayed on the indicator (51) does not increase when the switching mechanism (10) is turned on (discharged), and when the switching mechanism (10) is in a charging operation, the switching count of the indicator (51) increases by 1, so there is a problem in that a time difference occurs between the actual turning on (on) of the switching mechanism (10) and the calculation time of the switching count of the switching mechanism (10).

Meanwhile, in the conventional circuit breaker's switching counting device (50), the switching counting device (50) of relatively small size is configured to operate by receiving driving force from a relatively large switching mechanism (10), so there is a problem that when the large driving force of the switching mechanism (10) is applied, the switching counting device is easily damaged and its service life can be shortened.

Accordingly, the purpose of the present invention is to provide a circuit breaker closing (on) counting device capable of accurately counting the number of closing (on) times of a switching mechanism.

In addition, another object of the present invention is to provide an on-circuit circuit breaker counting device capable of counting the number of on-circuits during on-circuiting and transmitting driving force by buffering.

The circuit breaker's closing (on) counting device according to the present invention for solving the above-mentioned problem has a technical feature that the driving force of the switching mechanism can be buffered and transmitted to the closing counting device.

Specifically, a driving arm is provided on the rotational axis of the opening/closing mechanism, and a buffer spring is provided between the driving arm and a count lever of an indicator that counts input, so that the driving force of the driving arm can be buffered and transmitted to the count lever.

By this, the driving force of the relatively large opening/closing mechanism can be prevented from being directly transmitted to the input counting device, thereby causing damage to the input counting device.

Here, the circuit breaker is configured to include a fixed contactor, a movable contactor, and a switching mechanism that causes the movable contactor to contact and separate from the fixed contactor.

An operating pin is provided on one side of the above buffer spring so as to be in contact with the driving arm, and an operating lever is provided on the other side of the above buffer spring so as to be in contact with the counter lever.

Here, the driving arm is arranged so as to pressurize the operating pin when the opening/closing mechanism is inserted.

A circuit breaker's closing counting device of one embodiment of the present invention comprises: a fixed contactor; a movable contactor that comes into contact with or is separated from the fixed contactor; and a switching mechanism that converts a rotational motion of a rotational shaft to accumulate elastic force and causes the movable contactor to come into contact with or be separated from the fixed contactor by the accumulated elastic force; a circuit breaker's closing counting device that counts the number of times the circuit breaker is closed, the circuit breaker comprising: a driving arm coupled to the rotational shaft; an indicator that displays the number of times the circuit breaker is closed; a count lever that is rotatably provided on one side of the indicator and counts the number of times the circuit breaker is closed; an operating pin that is contactable with the driving arm and is arranged to be able to move up and down; an operating lever that is arranged to be able to press the count lever at one end; and a buffer spring that is flexibly interposed between the operating pin and the operating lever; wherein the driving arm is arranged to be able to press the operating pin when the switching mechanism is closed.

By this, the input (on) of the above switching mechanism can be accurately counted.

Additionally, the driving force of the above-mentioned opening/closing mechanism can be buffered and transmitted to the above-mentioned indicator.

According to this configuration, immediately after the opening/closing mechanism is opened, the input can be accurately counted by the indicator, and since the driving force of the opening/closing mechanism is transmitted in a buffered manner, damage to the indicator and the count lever can be suppressed.

In one embodiment of the present invention, the device further includes a bracket that supports the operating pin and the operating lever so as to be able to move relative to each other; and a supporter that is connected to the indicator and the bracket and supports the indicator and the bracket; wherein the buffer spring is coupled such that the operating pin is received therein, and the operating pin has a support portion that extends radially so as to support one end of the buffer spring.

By this, the movement of the operating pin and operating lever can be smoothly achieved.

In addition, the expansion and contraction of the above-mentioned buffer spring can be smoothly achieved.

In one embodiment of the present invention, the support member is provided on the lower side of the bracket, and the lower end of the buffer spring is configured to contact the upper surface of the operating lever.

Accordingly, when the operating pin is lowered, the buffer spring is buffered and elastic force is accumulated, and the operating lever can be pressed downward by the accumulated elastic force.

In one embodiment of the present invention, the bracket is provided with a lifting guide that guides the operating pin to be able to be lifted up and down.

By this, the lifting and lowering of the above-mentioned operating pin can be smoothly achieved.

In one embodiment of the present invention, the lifting guide has a guide surface inside that guides the operating pin and is joined to the upper surface of the bracket so as to protrude upward.

The above-mentioned elevator guide is implemented in a circular ring shape.

The above-mentioned lifting guide can be joined to the upper surface of the above-mentioned bracket.

According to this configuration, the thickness of the bracket can be reduced, so that the manufacturing of the bracket can be carried out smoothly.

By this, the occurrence of lateral displacement during the raising and lowering of the above-mentioned operating pin can be suppressed.

In one embodiment of the present invention, one of the mutual contact surfaces of the operating lever and the bracket is provided with a rotation shaft, and the other is provided with a rotation shaft hole for receiving the rotation shaft.

Thereby, the operating lever can be rotated relative to the bracket about the rotation axis.

In one embodiment of the present invention, the operating lever is provided with a pivot shaft that can rotate relative to the bracket, and the bracket is provided with a pivot hole for receiving the pivot shaft.

In one embodiment of the present invention, a mutual contact area between the bracket and the supporter is provided with a protrusion protruding from one of the bracket and the supporter and a protrusion receiving portion formed on the other so as to receive the protrusion.

Thereby, the occurrence of play between the bracket and the supporter can be suppressed.

Additionally, the number of fastening members that fasten the bracket and the supporter can be reduced.

In one embodiment of the present invention, the indicator is coupled to the front surface of the supporter, the bracket is arranged on the back surface of the supporter, and a spacer for adjusting the assembly position of the bracket and the supporter is provided in a mutual contact area between the bracket and the supporter.

Here, the spacer can be implemented in multiple pieces having different thicknesses.

Thereby, the position of the action pin with respect to the driving arm can be easily adjusted.

In one embodiment of the present invention, the supporter is provided with a fastening member re-joining portion to which a fastening member coupled to the spacer is coupled, and the bracket is provided with a bracket fastening member coupled to the spacer.

Accordingly, with the spacer arranged on the back surface of the supporter, the spacer can be integrally connected to the supporter by the supporter fastening member, and the bracket can be integrally fixedly connected to the spacer by the bracket fastening member.

In one embodiment of the present invention, the bracket has: an upper surface; a first side wall portion that is bent downward on one side of the upper surface; a second side wall portion that is bent downward on the other side of the upper surface; and a folded portion that is bent from the first side wall portion and comes into surface contact with the spacer; and a fastening member re-engaging portion is provided on the folded portion so that the bracket fastening member that is fastened to the spacer can be coupled.

By this, the combination of the bracket and the spacer can be firmly established.

In one embodiment of the present invention, the supporter is provided with a through-hole through which the operating lever can be withdrawn and brought into contact with the counter lever.

By this, contact between the operating lever and the counter lever can be easily achieved.

In one embodiment of the present invention, the opening/closing mechanism comprises a plurality of side plates spaced apart along the axial direction of the rotational axis, and the supporter comprises: a first supporter arranged parallel to the rotational axis; and a second supporter bent from the first supporter and capable of making surface contact with the side plates of the opening/closing mechanism.

Accordingly, since the indicator is arranged parallel to the rotation axis, the visibility of the number of injections indicated on the indicator can be improved.

In one embodiment of the present invention, the supporter has a coupling portion coupled to the opening/closing mechanism.

By this, the indicator and the supporter can be integrally fixed to the opening/closing mechanism.

In one embodiment of the present invention, the coupling portion includes a coupling member that passes through the second supporter and is coupled to a side plate of the opening/closing mechanism; and a coupling projection that protrudes from the second supporter and is inserted into the side plate of the opening/closing mechanism.

Thereby, the supporter can be prevented from being separated from the opening/closing mechanism by the fastening member, and the supporter can be prevented from being rotated relative to the opening/closing mechanism by the coupling projection.

According to this configuration, the number of fastening members that fasten the supporter and the opening/closing mechanism can be reduced.

In one embodiment of the present invention, the counter lever has a rotational shaft protruding from the indicator; a lever portion bent from the rotational shaft; and a projection protruding from an end of the lever portion toward the indicator; and the operating lever has a pressure portion that is movably arranged between the indicator and the lever portion so as to press downward the projection portion.

Accordingly, the pressing operation of the counter lever can be smoothly performed by rotating the operating lever.

In one embodiment of the present invention, the operating lever has a bottom portion; and two side wall portions protruding upward from both sides of the bottom portion; and the pressure portion is formed to protrude from the bottom portion and have a width that gradually decreases along the protrusion direction.

By this, unnecessary interference with the counter lever can be suppressed when the operating lever is raised or lowered.

In one embodiment of the present invention, the working pin is formed so that the lower end protrudes through the bottom surface, and the bottom surface is provided with a working pin receiving hole through which the working pin can be received in a manner of allowing relative movement.

Thereby, unnecessary interference between the operating pin and the operating lever can be suppressed when the operating pin is lowered by the driving arm.

With this configuration, the driving force of the driving arm is directly transmitted to the operating lever, so that damage to the operating lever and/or the counter lever and/or the indicator can be suppressed.

In one embodiment of the present invention, the counter lever spring for returning the counter lever to the initial position is further included, wherein the elastic force of the buffer spring is formed to be smaller than the elastic force of the counter lever spring when in the initial position, and larger than the elastic force of the counter lever spring when compressed by the downward movement of the operating pin.

Accordingly, when the driving arm moves downwards the operating pin, the driving force is buffered and transmitted to the counter lever, and when the driving arm and the operating pin are not in contact, the operating lever and the operating pin can be returned to the initial position by the elastic force of the counter lever spring.

As described above, according to one embodiment of the present invention, a driving arm coupled to a rotational shaft of an opening/closing mechanism, an operating pin capable of contacting the driving arm, an operating lever capable of pressing a counter lever of an indicator, and a buffer spring flexibly interposed between the operating pin and the operating lever are provided, so that the driving force of the opening/closing mechanism can be buffered and transmitted to the counter lever.

In addition, the driving arm is arranged so as to pressurize the operating pin when the opening/closing mechanism is inserted, so that the number of times the opening/closing mechanism is inserted (on) can be accurately counted immediately after insertion.

In addition, by further providing a bracket that supports the action pin and the action lever so that they can move relative to each other, the movement of the action pin and the action lever can be smoothly achieved.

In addition, by further providing a supporter connected to the indicator and the bracket, the indicator and the bracket can be supported smoothly.

In addition, the buffer spring is coupled to accommodate the action pin inside, and the action pin is provided with a support member that supports one end of the buffer spring, so that the buffer spring can be smoothly expanded.

In addition, since the bracket is provided with a lifting guide that guides the lifting and lowering of the working pin, the occurrence of lateral displacement of the working pin when the working pin is lifted and lowered can be suppressed.

In addition, since the lifting guide is configured to be protrudingly connected to the upper surface of the bracket, the thickness of the bracket can be reduced, making it easy to manufacture the bracket.

In addition, by providing a projection and a projection receiving portion that are joined to each other in the mutual contact area of the bracket and the supporter, the number of fastening members fastened to the bracket and the supporter can be reduced.

In addition, since a spacer is provided between the supporter and the bracket, the position of the action pin with respect to the driving arm can be easily adjusted.

In addition, the bracket has a top surface, a first side wall, a second side wall, and a bent portion that is bent at the first side wall and comes into surface contact with the spacer, so that the combination of the bracket and the spacer can be strengthened.

In addition, since an opening (3804) is formed through the supporter, smooth contact between the operating lever and the counter lever can be achieved.

In addition, the supporter has a first supporter arranged parallel to the rotation axis and a second supporter in surface contact with the side plate of the opening/closing mechanism, so that the number of inputs indicated on the indicator can be smoothly identified.

In addition, the connecting portion of the supporter is configured to have a connecting member that passes through the second supporter and is connected to the side plate of the opening/closing mechanism, and a connecting projection that protrudes from the second supporter and is inserted into the side plate of the opening/closing mechanism, thereby reducing the number of connecting members.

In addition, the counter lever has a rotating shaft, a lever portion, and a projection portion, and the operating lever has a pressing portion that is movably positioned between the indicator and the lever portion so as to press the projection portion downward, so that the pressing operation of the counter lever can be performed smoothly.

In addition, since the pressurizing portion is configured to have a width that gradually decreases along the protruding direction, unnecessary interference between the operating lever and the indicator can be suppressed.

In addition, the operating lever has a bottom portion and both side walls, and an operating pin receiving hole in which the operating pin is received so as to be able to move relative to the bottom portion is provided, so that the driving force of the driving arm can be suppressed from being directly transmitted to the operating lever.

In addition, the elastic force of the buffer spring is formed to be smaller than the elastic force of the counter lever spring at the initial position and larger than the elastic force of the counter lever spring when compressed by the downward movement of the operating pin, so that the driving force is buffered and transmitted to the counter lever when the operating pin is moved downward by the driving arm, and when the driving arm and the operating pin are not in contact, the operating lever and the operating pin can be returned to the initial position by the elastic force of the counter lever spring.

Figure 1 is a drawing showing an example of a switching mechanism of a conventional circuit breaker.

Figure 2 is a drawing showing the rotation axis of the opening/closing mechanism of Figure 1 and the opening/closing counting device.

Figure 3 is a perspective view of the operating lever of Figure 2.

Figures 4 to 6 are drawings for explaining the operation of the opening/closing counting device of Figure 2, respectively.

FIG. 7 is a drawing showing the usage status of the circuit breaker's input counting device according to one embodiment of the present invention.

Fig. 8 is an enlarged perspective view of the opening/closing mechanism of Fig. 7.

Fig. 9 is an enlarged perspective view of the input counting device of the circuit breaker of Fig. 7.

Fig. 10 is a perspective view showing the upper surface of the input counting device of the circuit breaker of Fig. 9.

Fig. 11 is a rear perspective view of the indicator of Fig. 9.

Fig. 12 is a perspective view of the supporter of Fig. 9.

Fig. 13 is a rear perspective view of the supporter of Fig. 12.

Fig. 14 is a perspective view of the spacer of Fig. 9.

Fig. 15 is a perspective view of the power transmission unit of Fig. 9.

Figure 16 is a rear perspective view of the power transmission unit of Figure 15.

Fig. 17 is an exploded perspective view of the power transmission unit of Fig. 16.

Fig. 18 is a rear perspective view of the bracket of Fig. 17;

Fig. 19 is a front view of the operating pin of Fig. 17.

Fig. 20 is a plan view of the operating lever of Fig. 17.

Fig. 21 is an enlarged view of the driving arm area before discharging of the opening/closing mechanism of Fig. 7.

Figure 22 is a drawing showing the driving arm area after discharging of the opening/closing mechanism of Figure 21.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. In this specification, identical or similar reference numerals are given to identical or similar components in different embodiments, and their descriptions are replaced with the first description. The singular expression used in this specification includes plural expressions unless the context clearly indicates otherwise. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and that the technical ideas disclosed in this specification should not be construed as being limited by the attached drawings.

FIG. 7 is a drawing showing a state of use of a circuit breaker closing counting device according to one embodiment of the present invention, FIG. 8 is an enlarged perspective view of a main part of a switching mechanism of FIG. 7, FIG. 9 is an enlarged perspective view of the circuit breaker closing counting device of FIG. 7, and FIG. 10 is a perspective view showing an upper surface of the circuit breaker closing counting device of FIG. 9. As shown in FIGS. 7 to 10, the circuit breaker closing counting device (300) of the present embodiment includes a driving arm (310), an indicator (320), a count lever (330), an operating pin (350), an operating lever (360), and a buffer spring (370).

The circuit breaker (110) may be configured to include, for example, a vacuum vessel (not shown), a vacuum interrupter (120) having a fixed contactor (not shown) and a movable contactor (not shown) arranged inside the vacuum vessel, a switching mechanism (150) that provides driving force to the vacuum interrupter (120), and a transfer part (190) provided below the vacuum interrupter (120) and the switching mechanism (150).

In this embodiment, the circuit breaker (110) is implemented as a vacuum circuit breaker equipped with a vacuum interrupter, but this is only an example and is not limited thereto. The circuit breaker (110) may also be implemented as an air circuit breaker.

The above-mentioned transport unit (190) may be configured, for example, with a rectangular bogie (191) and a plurality of wheels (192) each of which is provided on both sides of the bogie (191) so as to be able to run.

As illustrated in FIG. 8, the opening/closing mechanism (150) may be configured to include, for example, a frame (160) and a mechanism (170) that is provided to enable relative movement with respect to the frame (160).

A receiving space is formed inside the above frame (160).

The above frame (160) may, for example, be provided with a first side plate (161) and a second side plate (162) that are spaced apart from each other and arranged in parallel, and an upper side plate (163) provided on the upper ends of the first side plate (161) and the second side plate (162).

The inner upper area of the above frame (160) may be provided with, for example, an on button (171) and an off button (172).

The above-mentioned on button (171) can be configured so that, for example, a so-called “input operation” can be performed in which the movable contactor comes into contact with the fixed contactor when pressed.

The above off button (172) may be configured so that, for example, a so-called “blocking operation” can be performed in which the movable contactor is separated from the fixed contactor when pressed.

The mechanism (170) may be provided in the lower area of the on button (171) and the off button (172) inside the frame (160).

The above mechanism (170) may be configured to include, for example, a plurality of links and a plurality of springs that are coupled to each other so that the insertion operation and/or the blocking operation can be performed respectively. Here, since the configuration of the plurality of links and the plurality of springs for the insertion operation and the blocking operation is known, a detailed description thereof will be omitted.

Meanwhile, in the inner lower region of the first side plate (161) and the second side plate (162), an input spring (not shown) that provides elastic force to move the movable contactor toward the fixed contactor, a crank assembly (175) for accumulating the elastic force of the input spring, and a cam assembly (180) may be provided.

The cam assembly (180) is configured to include, for example, a rotation shaft (181) and a cam plate coupled to the rotation shaft (181). The cam assembly (180) can be configured to rotate a charging region and a discharging region that are formed to be partitioned along a circumferential direction centered on the rotation shaft (181).

In this embodiment, the rotation axis (181) may be configured to rotate in one direction (e.g., clockwise in the drawing) along the circumferential direction.

The above-mentioned rotation axis (181) may be configured to have, for example, a cut portion (182) in which a portion of the circumference is concavely cut inward. The cut portion (182) may be configured to extend along the axial direction.

In this embodiment, the rotation axis (181) may be configured to protrude from one side (left side in the drawing) of the second side plate (162).

The above rotation shaft (181) is configured to have a protruding end (181a) protruding outward from the opening/closing mechanism (150) (second side plate (162)).

The driving arm (310) can be coupled to the protruding end (181a) of the rotation shaft (181) protruding outward from the second side plate (162).

Here, the protruding end (181a) of the rotation shaft (181) can be protruded to a length such that the driving arm (310) can be placed above the operating pin (350) of the input counting device (300).

The above driving arm (310) may be formed to protrude to one side along the radial direction of the rotation axis (181), for example.

A separation prevention member (315) may be provided on one side of the driving arm (310) along the axial direction of the rotating shaft (181) to prevent separation of the driving arm (310).

The above-mentioned detachment prevention member (315) can be implemented as, for example, a snap ring.

The above driving arm (310) has a disc-shaped body (3101) and a protrusion (3103) protruding along the radial direction of the body (3101). The protrusion (3103) may be formed so that its width gradually decreases along the protrusion direction.

The above body (3101) may have a rotation shaft hole (3102) formed therethrough so that the rotation shaft (181) can be inserted therein. The rotation shaft hole (3102) may be formed, for example, to correspond to the cross-sectional shape of the rotation shaft (181). Accordingly, the driving arm (310) may be restrained with respect to the rotational direction of the rotation shaft (181) when coupled with the rotation shaft (181).

A pressing surface (3104) that comes into contact with the action pin (350) and presses the action pin (350) can be formed on one side (left side in the drawing) of the above-mentioned protrusion (3103).

The above-mentioned pressure surface (3104) may have a curved cross-section shape. Accordingly, when in contact with the action pin (350), the contact and sliding movement of the protrusion (3103) and the action pin (350) can be smoothly achieved.

The above driving arm (310) may be configured to be able to come into contact with the operating pin (350), for example, when charging of the opening/closing mechanism (150) is completed (immediately before insertion).

In addition, the driving arm (310) may be configured so that the pressurization of the operating pin (350) is terminated when the discharge (input) of the opening/closing mechanism (150) is completed. The operating pin (350) may be returned to the initial position immediately after the insertion of the opening/closing mechanism (150).

The circuit breaker input counting device (300) of the present embodiment may be configured to be coupled to, for example, one side (left side in the drawing) of the switching mechanism (150).

Specifically, the input counting device (300) of the circuit breaker of the present embodiment may be configured to be coupled to the second side plate (162) of the switching mechanism (150).

The above-described opening/closing mechanism (150) may be provided with a fastening member re-attachment portion (1621) and a coupling projection receiving portion (1622) so that the later-described fastening member (3811) and coupling projection (3812) of the input counting device (300) of the circuit breaker can be respectively coupled.

Meanwhile, the indicator (320) has, for example, a rectangular solid shape.

A counter lever (330) is rotatably provided on one side (right side in the drawing) of the above indicator (320).

The operating lever (360) is provided on one side (upper side in the drawing) of the above counter lever (330).

The supporter (380) is coupled to the back surface of the above indicator (320).

The bracket (390) is attached to the back surface of the above supporter (380).

The above bracket (390) is coupled with the above action pin (350) so as to enable relative movement.

In this embodiment, the bracket (390), the operating pin (350), and the operating lever (360) are coupled to each other so as to be able to move relative to each other, and are interposed between the driving arm (310) and the counter lever (330) so as to transmit the driving force of the driving arm (310) to the counter lever (330), and thus may be referred to as a “power transmission unit (340).”

A buffer spring (370) is provided between the above-mentioned operating pin (350) and the above-mentioned operating lever (360).

The above power transmission unit (340) may be configured to further include the above buffer spring (370).

Accordingly, when the opening/closing mechanism (150) is inserted, the driving force of the driving arm (310) can be buffered and transmitted to the counter lever (330).

According to this configuration, damage to the counter lever (330) and the indicator (320) caused by the driving force of the driving arm (310) can be suppressed.

Fig. 11 is a rear perspective view of the indicator of Fig. 9. As shown in Figs. 9 and 11, an indicator window (325) is provided on one side (e.g., the front) of the indicator (320) to enable observation of the number of times the opening/closing mechanism (150) is turned on/off.

Although not specifically shown in the drawing, the indicator (320) is equipped with a counting mechanism that increases the number (the number of inputs) by 1 when the count lever (330) is pressed. The number of inputs counted by the counting mechanism can be displayed externally through the display window (325).

A counter lever (330) is provided on the other side (right end in the drawing) of the above indicator (320).

The above counter lever (330) can be configured to be rotatable with respect to the indicator (320).

For example, the counter lever (330) may be configured to include a rotation shaft (3301), a lever portion (3302) bent from the rotation shaft (3301), and a protrusion portion (3303) protruding from an end of the lever portion (3302) toward the indicator (320).

Inside the indicator (320), for example, a counter lever spring (335) that applies elastic force to return the counter lever (330) to the initial position may be provided. The counter lever spring (335) may be configured to accumulate elastic force when the counter lever (330) is pressed (rotated downwards), and to return to the initial position (rotated upwards) with the accumulated elastic force when the counter lever (330) is released. The counter lever spring (335) may be implemented as, for example, a torsion coil spring or a spiral spring.

The above indicator (320) may be provided with, for example, a flange (322) extending in the vertical direction. The flange (322) may be provided with, for example, an upper flange (3221) extending upwardly on the back surface of the indicator (320) and a lower flange (3222) extending downwardly on the back surface of the indicator (320).

A plurality of fastening members (323) may be provided on each of the upper flange (3221) and lower flange (3222).

The above plurality of fastening members (323) may be provided in two pieces each on the upper flange (3221) and the lower flange (3222).

The above-mentioned plurality of fastening members (323) can each be implemented as, for example, screws.

The protrusion (3303) of the above counter lever (330) can be implemented in a screw shape, for example.

The above protrusion (3303) may be configured to be screw-connected to, for example, the lever portion (3302) of the counter lever (330).

The above protrusion (3303) may have, for example, a protrusion end (3303a) protruding from the lever portion (3302).

The above protruding portion (3303a) may be implemented in a circular shape, for example, for contact with the operating lever (360).

Fig. 12 is a perspective view of the supporter of Fig. 9, and Fig. 13 is a rear perspective view of the supporter of Fig. 12. As shown in Figs. 12 and 13, the supporter (380) may be configured to include, for example, a first supporter (3801) arranged parallel to the rotation axis (181) and a second supporter (3802) bent from the first supporter (3801) and capable of making surface contact with the side plate (second side plate (162)) of the opening/closing mechanism (150).

The above first supporter (3801) can, for example, be in contact with the back surface of the indicator (320).

The indicator (320) can be coupled to one side (front) of the first supporter (3801).

The above first supporter (3801) is provided with a plurality of fastening member joining portions (3803) so that a plurality of fastening members (323) penetrating the indicator (320) can be joined.

The above-mentioned plurality of fastening member re-joining portions (3803) are formed by penetrating the first supporter (3801).

An opening (3804) may be formed through the above supporter (380) to allow the operating lever (360) to be withdrawn.

The above opening (3804) can be formed in the first supporter (3801).

The above opening (3804) may be implemented in a rectangular shape, for example.

The right side of the above opening (3804) can be formed at the boundary between the first supporter (3801) and the second supporter (3802).

The left side of the above opening (3804) can be formed apart from the left end of the first supporter (3801).

As shown in Fig. 10, the bracket (390) is joined to the back surface of the supporter (380) with a spacer (385) interposed therebetween.

The above supporter (380) may have a protrusion receiving portion (3805) formed to accommodate the protrusion (3905) of the bracket (390).

The above protrusion receiving portion (3805) can be formed through a penetration corresponding to the shape of the protrusion (3905), for example.

The above protrusion receiving portion (3805) may be formed, for example, through the first supporter (3801).

The above supporter (380) may be provided with a coupling part (381) that is coupled to the opening/closing mechanism (150).

The above-mentioned connecting portion (381) may be configured to include, for example, a connecting member (3811) that passes through the supporter (380) and is connected to the opening/closing mechanism (150) and a connecting projection (3812) that protrudes from the supporter (380) and is inserted into the opening/closing mechanism (150).

By this, the number of fastening members for joining the supporter (380) and the opening/closing mechanism (150) can be reduced.

The fastening member (3811) of the above-mentioned joint (381) may be configured to be screw-connected to, for example, the frame (160) of the opening/closing mechanism (150) (in this embodiment, the second side plate (162).

By this, the fastening member (3811) that passes through the supporter (380) and is coupled to the opening/closing mechanism (150) can prevent the supporter (380) from being separated from the opening/closing mechanism (150).

The coupling projection (3812) that passes through the supporter (380) and is coupled to the opening/closing mechanism (150) can prevent the supporter (380) from rotating relative to the opening/closing mechanism (150).

For example, the fastening member (3811) and the connecting projection (3812) may be provided on the second supporter (3802).

A rotation shaft receiving hole (3806) may be formed through the second supporter (3802) so that the rotation shaft (3604) of the operating lever (360) can be received.

Fig. 14 is a perspective view of the spacer of Fig. 9. As shown in Fig. 14, the spacer (385) can be implemented in a rectangular plate shape.

In this embodiment, the spacer (385) is implemented in a rectangular plate shape, but this is only an example and is not limited thereto.

The above spacer (385) can be inserted between the supporter (380) and the bracket (390).

The spacer (385) may be provided with a fastening member re-joining portion (3851) to enable a plurality of fastening members (323) passing through the indicator (320) and the supporter (380) to be joined. The spacer (385) may be provided with a bracket fastening member re-joining portion (3852) to enable a bracket fastening member (397) provided on a bracket (390) to be described later to be joined.

FIG. 15 is a perspective view of the power transmission unit of FIG. 9, FIG. 16 is a rear perspective view of the power transmission unit of FIG. 15, FIG. 17 is an exploded perspective view of the power transmission unit of FIG. 16, FIG. 18 is a rear perspective view of the bracket of FIG. 17, FIG. 19 is a front view of the operating pin of FIG. 17, and FIG. 20 is a plan view of the operating lever of FIG. 17. As illustrated in FIGS. 15 to 20, the power transmission unit (340) may be configured to include an operating pin (350), a buffer spring (370), an operating lever (360), and a bracket (390), as described above.

The above bracket (390) may be configured to include, for example, an upper surface portion (3901), a first side wall portion (3902) that is bent downward from one side of the upper surface portion (3901), a second side wall portion (3903) that is bent downward from the other side of the upper surface portion (3901), and a bent portion (3906) that is bent from the first side wall portion (3902).

A protrusion (3905) that is coupled to the supporter (380) may be formed protruding on one side (front in the drawing) of the upper surface (3901). The protrusion (3905) may be implemented to have, for example, a rectangular cross-section.

The above bracket (390) may be provided with, for example, a lifting guide (395) that guides the lifting of the operating pin (350).

By this, the occurrence of lateral displacement of the action pin (350) when the action pin (350) is raised or lowered can be suppressed.

Additionally, the upper part of the above-mentioned operating pin (350) can repeatedly come into contact with the above-mentioned driving arm (310) at an accurate position.

The above-mentioned lifting guide (395) may be provided, for example, on the upper surface (3901).

The above-mentioned lifting guide (395) can be implemented in a circular ring shape, for example.

The above-mentioned lifting guide (395) may be provided with a guide surface (3951) that guides the above-mentioned operating pin (350).

The above guide surface (3951) can be provided inside the above lifting guide (395).

The above-mentioned lifting guide (395) may be configured to protrude upward from the upper surface of the upper surface portion (3901), for example.

The above-mentioned lifting guide (395) can be, for example, welded to the upper surface of the upper surface portion (3901).

The above-mentioned bend portion (3906) may be formed, for example, to be bent outward from one end (front end) of the first side wall portion (3902).

The above-mentioned bending portion (3906) can be implemented, for example, in the form of a rectangular plate.

The above-mentioned bend portion (3906) may be provided with a bracket fastening member re-joining portion (3907) to which, for example, a bracket fastening member (397) for fastening the bracket (390) may be joined. The above-mentioned bracket fastening member re-joining portion (3907) may be formed, for example, by penetrating the above-mentioned bend portion (3906).

As shown in FIG. 18, a rotation shaft hole (3904) may be formed through the first side wall portion (3902) and the second side wall portion (3903) so that the rotation shaft (3604) of the operating lever (360) can be received.

The operating pin (350) is provided inside the above bracket (390).

The above-mentioned action pin (350) has, for example, a cylindrical shape.

The above action pin (350) is provided with a support portion (3501) to support one end (upper end) of the above buffer spring (370).

The above support member (3501) may be configured to protrude radially along the outer surface of the action pin (350), for example.

The above support member (3501) may be implemented, for example, to protrude along the radial direction of the operating pin (350) and extend along the circumferential direction.

The upper area of the above-mentioned operating pin (350) can penetrate the bracket (390) and protrude upward from the bracket (390).

The upper part of the above action pin (350) can be positioned so as to be in contact with the driving arm (310).

For example, a guide part (3502) for guiding the driving arm (310) may be provided at the upper end of the above-mentioned operating pin (350).

The above guide portion (3502) may be formed by cutting so that the width gradually decreases, for example, as illustrated in FIG. 19.

The above guide portion (3502) may be configured to extend along the circumferential direction of the above action pin (350).

By this, smooth contact with the driving arm (310) can be achieved.

The above-mentioned buffer spring (370) can be combined with the above-mentioned action pin (350).

The above-mentioned buffer spring may be implemented to be elastic along the rising and falling direction of the action pin (350), for example.

The above buffer spring (370) can be implemented as, for example, a compression coil spring.

The above-mentioned buffer spring (370) may, for example, be implemented with an inner diameter larger than the outer diameter of the above-mentioned action pin (350).

The above buffer spring (370) may be implemented with an outer diameter smaller than the inner width of the bracket (390).

Thereby, the buffer spring (370) can be coupled to the circumference of the action pin (350) and placed inside the bracket (390).

The elastic force of the above-mentioned buffer spring (370) may be configured to be, for example, smaller than the elastic force of the counter lever spring (335) at the initial position, and the elastic force accumulated when compressed by the downward movement of the action pin (350) may be configured to be larger than the elastic force of the counter lever spring (335).

One end (upper end) of the above buffer spring (370) is connected to the support part (3501) of the above operating pin (350), and the lower end is connected to the operating lever (360) (upper surface of the bottom part (3601) to be described later).

The above-mentioned buffer spring (370) can be coupled between the operating pin (350) and the operating lever (360) in a slightly compressed state so that a preset elastic force can be accumulated.

According to this configuration, when the action pin (350) is lowered by the downward pressure of the driving arm (310), the accumulated elastic force of the buffer spring (370) becomes greater than the elastic force of the counter lever spring (335), so that the counter lever (330) can be lowered as the counter lever spring (335) is compressed.

In addition, when the pressure of the operating pin (350) is released by the rotation of the driving arm (310), the elastic force of the buffer spring (370) decreases and the operating lever (360) returns to the initial position by the elastic force of the counter lever spring (335).

As the above operating lever (360) returns to the initial position, the operating pin (350) can return to the initial position by the elastic force of the buffer spring (370).

The above operating lever (360) may be configured to have a “U” cross-sectional shape, for example, by having a bottom portion (3601) and two side wall portions (3602) formed to protrude upward from both sides of the bottom portion (3601).

The above two side walls (3602) may each be provided with a pivot shaft (3604) that can rotate relative to the bracket (390).

The above rotation axis (3604) may be provided, for example, on one side (rear side in the drawing) of each of the two side wall portions (3602).

The above-described rotation shaft (3604) may be configured to be, for example, provided with a male screw portion and screw-connected to each of the two side wall portions (3604), and the ends may be configured to protrude outwardly from each of the two side wall portions (3604). The protruding ends of the rotation shaft (3604) protruding outwardly from each of the two side wall portions (3604) may be rotatably connected to, for example, the rotation shaft holes (3904) of the bracket (390). Here, a bushing may be interposed between the protruding ends of the rotation shaft (3604) and the rotation shaft holes (3904), for example.

The inner side of the above-mentioned side wall portions (3602) may be provided with the above-mentioned operating pin (350) and the above-mentioned buffer spring (370).

The above-mentioned bottom surface (3601) is provided with an action pin receiving hole (3603) so that the action pin (350) can protrude downward.

The above-mentioned action pin receiving hole (3603) can be implemented in a long hole shape so that the action pin (350) can move relative to each other, for example, as shown in FIG. 20.

The above-mentioned action pin receiving hole (3603) may be configured to be larger than the outer diameter of the action pin (350) and smaller than the outer diameter of the buffer spring (370).

The above operating lever (360) is configured to have a pressurizing portion (3605) capable of pressurizing the counter lever (330).

The above pressurizing portion (3605) may be configured to protrude forward from, for example, one side (front end) of the bottom portion (3601).

The above pressurized portion (3605) may be formed, for example, so that its width gradually decreases along the protruding direction.

The above pressurizing portion (3605) may be positioned so as to enable relative movement between, for example, the indicator (320) and the lever portion (3302) of the counter lever (330).

The above pressurizing portion (3605) can be placed on the upper side of the protruding portion (3303) (protruding end portion (3303a)) of the counter lever (330).

The above pressurizing portion (3605) can be positioned so that its lower surface comes into contact with the upper surface of the protruding portion (3303) (protruding end (3303a)) of the counter lever (330).

By this, when the operating lever (360) rotates downward by the operating pin (350) and the buffer spring (370), the counter lever (330) can be pressed downward and operated.

Fig. 21 is an enlarged view of the driving arm area before discharging of the opening/closing mechanism of Fig. 7, and Fig. 22 is a drawing showing the driving arm area after discharging of the opening/closing mechanism of Fig. 21.

By this configuration, when the input counting device (300) of the circuit breaker of the present embodiment is to be connected to the switching mechanism (150), the second supporter (3802) of the input counting device (300) of the circuit breaker is arranged to correspond to one side of the switching mechanism (150) (the left side of the second side plate (162)).

Here, the circuit breaker's input counting device (300) of the present embodiment can be coupled, for example, when discharging the switching mechanism (150).

As illustrated in FIG. 22, when the engaging projection (3812) and the fastening member (3811) of the second supporter (3802) are engaged with the engaging projection receiving portion (1622) and the fastening member re-engaging portion (1621) of the second side plate (162), respectively, the operating pin (350) can be arranged on one side (front in the drawing) of the driving arm (310).

Here, the counter lever (330) is placed in an initial position rotated upward by the elastic force of the counter lever spring (335).

In addition, the above-mentioned operating pin (350) is placed in an initial position protruding upward from the bracket (390) by the elastic force of the above-mentioned buffer spring (370).

And, the operating lever (360) is placed in an initial position in contact with the upper side of the counter lever (330) by the elastic force of the counter lever spring (335).

Meanwhile, when charging the opening/closing mechanism (150) (injection spring), the rotation shaft (181) rotates in one direction (clockwise in the drawing), and the driving arm (310) rotates in a direction away from the operating pin (350).

When the charging of the above opening/closing mechanism (150) is completed, as shown in Fig. 21, the driving arm (310) has a protrusion (3103) positioned above the operating pin (350).

When the on button (171) of the above opening/closing mechanism (150) is pressed, the insertion operation of the insertion spring is performed, and the rotation shaft (181) and the driving arm (310) rotate clockwise.

When the above driving arm (310) rotates, the pressure part (3605) of the driving arm (310) rotates while pressing down the upper part of the operating pin (350).

When the above-mentioned operating pin (350) is lowered, the above-mentioned buffer spring (370) is compressed and accumulates elastic force. The above-mentioned operating lever (360) rotates downward due to the elastic force of the above-mentioned buffer spring (370).

At this time, since the elastic force accumulated during compression of the buffer spring (370) is greater than the elastic force of the counter lever spring (335), the counter lever (330) is pressurized and rotates downward. As a result, the number of times the opening/closing mechanism (150) is turned on is counted, and the number of times the opening/closing mechanism is turned on is displayed as a number that increases by 1.

When the above driving arm (310) passes the above working pin (350) and the pressure of the above working pin (350) is released, the above buffer spring (370) is extended and its elasticity is reduced, becoming smaller than the elasticity of the above counter lever spring (335).

Accordingly, the counter lever (330) is rotated upward to the initial position by the elastic force of the counter lever spring (335), and the operating lever (360) is rotated upward by the counter lever (330).

Meanwhile, the action pin (350) moves upward to the initial position by the elastic force of the buffer spring (370), as shown in FIG. 22.

The above-mentioned operating pin (350) is positioned in front of the protrusion (3103) of the driving arm (310) that is discharged at the initial position.

As described above, the driving arm (310) is positioned above the operating pin (350) positioned in the initial position when the opening/closing mechanism (150) is charged, and when the opening/closing mechanism is discharged, the operating pin (350) is pressed downward, thereby allowing the process of counting the number of inputs (on) by the count lever (330) to be repeatedly performed.

In the above, specific embodiments of the present invention have been illustrated and described. However, the present invention may be implemented in various forms without departing from the spirit or essential characteristics thereof, and the embodiments described above should not be limited by the specific contents for implementing the invention.

In addition, even if the embodiments are not specifically listed in the detailed description described above, they should be broadly interpreted within the scope of the technical idea defined in the appended claims. And, all changes and modifications included within the technical scope of the above claims and their equivalents should be covered by the appended claims.

(Explanation of symbols)

110: Circuit breaker

120: Vacuum interrupter

150: Opening mechanism

160: Frame

161: 1st side plate

162: Second side plate

1621: Rejoining joint

1622: Receptacle for the connecting projection

163: Top plate

190: Transport section

191: Carriage

192: Wheel

170: Mechanical Department

171: On Button

172: Off Button

175: Crank Assembly

180: Cam Assembly

181: Rotation axis

181a: protrusion

182: Cut section

300: Circuit breaker input counting device

310: Drive arm

3101: Body

3102: Rotating shaft hole

3103: Protrusion

3104: Pressurized surface

315: No escape prevention device

320: Indicator

322: Flange

3221: Upper flange

3222: Lower flange

323: Fastening member

325: Display window

330: Counter lever

3301: Rotation axis

3302: Lever part

3303: Protrusion

3303a: protruding end

335: Counter lever spring

340: Power transmission unit

350: Action pin

3501: Support

3502: Guidance Department

360: Operating lever

3601: Bottom

3602: Both side walls

3603: Action pin receiving hole

3604: Rotation axis

3605: Pressurized part

370: Buffer spring

380: Supporter

3801: 1st Supporter

3802: 2nd Supporter

3803: Fastening member rejoining part

3804: Opening

3805: protrusion receiving section

3806: Rotating shaft receiving hole

381: Joint

3811: Fastening member

3812: Combination projection

385: Spacer

390: Bracket

3901: Top surface

3902: First side wall

3903: Second side wall

3904: Rotating shaft

3905: protrusion

3906: bend

3907: Bracket fastening member rejoining part

395: Elevator Guide

3951: Guide surface

397: Bracket fastening member

Claims (19)

A circuit breaker closing counting device that counts the number of times the circuit breaker is closed, comprising: a fixed contactor; a movable contactor that contacts or is separated from the fixed contactor; and a switching mechanism that converts the rotational motion of a rotating shaft to accumulate elastic force and causes the movable contactor to contact or is separated from the fixed contactor by the accumulated elastic force; A driving arm coupled to the above rotating shaft; An indicator that displays the number of times the above inputs are made; A count lever rotatably provided on one side of the above indicator and counting the number of inputs; An operating pin arranged so as to be in contact with the above driving arm and capable of being lifted; An operating lever, one end of which is arranged to be operable by pressing the counter lever; and It includes a buffer spring that is flexibly interposed between the above-mentioned operating pin and the above-mentioned operating lever, The above driving arm is arranged so as to pressurize the operating pin when the opening/closing mechanism is inserted. Circuit breaker's input counting device. In the first paragraph, A bracket that supports the above-mentioned operating pin and the above-mentioned operating lever so as to enable relative movement; and Further comprising a supporter connected to the indicator and the bracket to support the indicator and the bracket, The above operating lever is positioned on the lower side of the bracket and is rotatably coupled with respect to the bracket, The above-mentioned operating pin is positioned so that its upper end protrudes through the bracket and can come into contact with the driving arm. Circuit breaker's input counting device. In the second paragraph, The above buffer spring is combined so that the action pin is accommodated inside, The above-mentioned action pin is provided with a support portion extended along the radial direction so as to support one end of the above-mentioned buffer spring. Circuit breaker's input counting device. In the third paragraph, The lower end of the above buffer spring comes into contact with the upper surface of the above operating lever. Circuit breaker's input counting device. In the third paragraph, In the above brackets, Equipped with a lifting guide that guides the above-mentioned operating pin to be able to be lifted, Circuit breaker's input counting device. In paragraph 5, The above lift guide is, A guide surface for guiding the above-mentioned operating pin is provided inside and is joined so as to protrude upward on the upper surface of the bracket. Circuit breaker's input counting device. In the second paragraph, One of the mutual contact surfaces of the above operating lever and the above bracket is provided with a rotation shaft, and the other is provided with a rotation shaft hole for receiving the rotation shaft. Circuit breaker's input counting device. In the second paragraph, The mutual contact area between the bracket and the supporter is provided with a projection protruding from one of the bracket and the supporter and a projection receiving portion formed on the other so as to receive the projection. Circuit breaker's input counting device. In the second paragraph, The above indicator is combined on the front of the above supporter, The bracket is placed on the back of the above supporter, A spacer for adjusting the assembly position of the bracket and the supporter is provided in the mutual contact area of the bracket and the supporter. Circuit breaker's input counting device. In Article 9, The above supporter is provided with a fastening member joint portion to which a fastening member coupled to the above spacer is coupled, The above bracket is provided with a bracket fastening member that is coupled to the above spacer. Circuit breaker's input counting device. In Article 10, The above brackets, upper surface; A first side wall portion that is bent downward on one side of the upper surface; A second side wall portion that is bent downward from the other side of the upper surface, and A bent portion is provided in the first side wall portion and is in surface contact with the spacer; The above bending portion is provided with a fastening member joining portion so that the bracket fastening member that is fastened to the spacer can be joined. Circuit breaker's input counting device. In Article 9, The above supporters include: A through-hole is provided so that the above operating lever can be withdrawn and come into contact with the above counter lever. Circuit breaker's input counting device. In Article 9, The above opening mechanism has a plurality of side plates spaced apart along the axial direction of the rotation axis, The above supporters, A first supporter arranged parallel to the above rotation axis; and A second supporter is provided, which is bent from the first supporter and is capable of making surface contact with the side plate of the opening/closing mechanism; Circuit breaker's input counting device. In Article 13, The above supporter has a connecting part that is connected to the opening/closing mechanism. Circuit breaker's input counting device. In Article 14, The above joint is, A fastening member that passes through the second supporter and is fastened to the side plate of the opening/closing mechanism; and Including a coupling projection that protrudes from the second supporter and is inserted into the side plate of the opening/closing mechanism; Circuit breaker's input counting device. In the first paragraph, The above counter lever, A pivot shaft protruding from the above indicator; A lever portion bent from the above rotation axis; and It has a protrusion that protrudes from the end of the lever portion toward the indicator; The above operating lever, A pressure member is provided that is movably positioned between the indicator and the lever portion so as to press downward the protrusion. Circuit breaker's input counting device. In Article 16, The above operating lever, Bottom surface; and It has two side walls protruding upward from both sides of the above-mentioned bottom surface; The above pressurized portion is formed so that it protrudes from the bottom portion and its width gradually decreases along the protrusion direction. Circuit breaker's input counting device. In Article 17, The above-mentioned working pin is formed so that the lower part protrudes through the bottom surface, The above bottom surface is provided with a penetrating pin receiving hole so that the above working pin can be received with relative movement. Circuit breaker's input counting device. In any one of claims 1 to 18, Further comprising a counter lever spring for returning the counter lever to the initial position; The elastic force of the above buffer spring is: At the initial position, the elasticity of the counter lever spring is smaller; When compressed by the downward movement of the above action pin, the elastic force is formed to be greater than that of the counter lever spring. Circuit breaker's input counting device.

Images