Air circuit breaker

Abstract

Disclosed is an air circuit breaker. An air circuit breaker according to an aspect of the present invention comprises: a frame forming the outer shape; and a transfer member accommodated in the frame, elastically coupled to the frame, and pressed by a plurality of input coils positioned outside the frame to perform an input operation, wherein the transfer member includes: a first transfer member that is in contact with the input coils; and a second transfer member rotatably coupled to the first transfer member, wherein the first transfer member may include a plurality of pressing protrusions that are spaced apart from each other in one direction in which the plurality of input coils are spaced apart from each other, and are positioned vertically below a coil shaft provided in each of the plurality of input coils.

Description

breaker

[0001] The present invention relates to an air circuit breaker, and more specifically, to an air circuit breaker having a structure capable of simultaneously mounting a plurality of closing coils.

[0002] An air circuit breaker refers to a circuit breaker that extinguishes an arc using air as a medium. An air circuit breaker is electrically connected to an external power source and a load, respectively. The air circuit breaker includes fixed contacts and movable contacts and is configured to allow or interrupt the electrical connection between the power source and the load.

[0003] The air circuit breaker may be equipped with a closed coil. The closed coil is electrically connected to an external control power source. The closed coil may be composed of a fixed core, a movable core, and a coil surrounding them. When current is supplied to the closed coil, the coil forms a magnetic field to magnetize the fixed core.

[0004] The magnetized fixed core applies a magnetic attractive force to the movable core. Accordingly, the movable core and the shaft coupled thereto can move together. At this time, the moved shaft can strike a transmission member provided in the air breaker to perform a closing operation.

[0005] Referring to FIGS. 22 to 26, an air breaker (1000) according to the prior art is illustrated. In the illustrated embodiment, it is configured to include an air breaker body (1100), an air breaker lever (1200), and a transmission member (1300).

[0006] A closing coil (not shown) is seated on the upper side of the air circuit breaker body (1100). When current is applied from an external control power source, a movable core and a shaft provided in the closing coil (not shown) descend together and strike a transmission member (1300). Accordingly, the transmission member (1300) rotates and strikes another component of the air circuit breaker body (1100), thereby enabling the closing operation of the air circuit breaker (1000).

[0007] To this end, the transmission member (1300) is configured to include a contact point (1310) that is struck by a shaft.

[0008] However, as described above, the transmission member (1300) provided in the conventional air circuit breaker (1000) is configured to include only a single contact point (1310). Therefore, since only a single insertion coil can be applied to the conventional air circuit breaker (1000), there is a risk that the entire air circuit breaker (1000) may malfunction if the insertion coil is damaged.

[0009] Accordingly, a method is required to provide multiple input coils and to perform an input operation by multiple input coils.

[0010] Korean Published Patent Document No. 10-2024-0139731 discloses an air circuit breaker. Specifically, it discloses an air circuit breaker comprising a rotating shaft connected to a movable electrode and a latch linked thereto, wherein a groove portion is formed in a holder rotatably installed in a driving part to which the latch is coupled, and a locking projection is formed within the said groove portion.

[0011] However, the aforementioned prior art only provides a method to prevent return to the energized state by improving the coupling reliability of the latch and the groove. The aforementioned prior art does not provide a method for controlling an air circuit breaker by providing multiple closing coils themselves and utilizing them.

[0012] Korean Registered Patent Document No. 10-1701155 discloses an air circuit breaker. Specifically, it discloses an air circuit breaker having a structure capable of stopping the inflow and outflow operations of the air circuit breaker by including an operating start member and a locking unit disposed adjacent to a connecting member driving part.

[0013] However, the air circuit breaker disclosed in the aforementioned prior art only provides a method for preventing the inflow and outflow of the cradle while the cradle is in the closed state of the breaker. The aforementioned prior art does not provide a method for controlling the air circuit breaker by providing multiple closing coils that operate the air circuit breaker and utilizing them.

[0014] Korean Published Patent Document No. 10-2024-0139731 (September 24, 2024)

[0015] Korean Registered Patent Document No. 10-1701155 (2017.01.24.)

[0016] The present invention aims to solve the above-mentioned problems, and the objective of the present invention is to provide an air-circuit breaker with a structure capable of reliably performing an insertion operation.

[0017] Another objective of the present invention is to provide an air circuit breaker having a structure that may be equipped with a plurality of insertion coils for performing an insertion operation.

[0018] Another objective of the present invention is to provide an air circuit breaker with a structure in which the operation of a plurality of input coils can be transmitted to a single configuration.

[0019] Another objective of the present invention is to provide an air breaker of a structure in which the single configuration can move or rotate in multiple directions.

[0020] Another objective of the present invention is to provide an air circuit breaker with a structure capable of performing a closing operation even if any one of the plurality of closing coils malfunctions.

[0021] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art to which the present invention pertains from the description below.

[0022] According to one aspect of the present invention, an air-circuit breaker is provided, comprising: a frame constituting an outer shape; and a transmission member configured to perform an insertion operation by being pressed by a plurality of insertion coils located outside the frame, the transmission member being received inside the frame and elastically coupled to the frame, and the transmission member comprising: a first transmission member in contact with the insertion coils; and a second transmission member rotatably coupled to the first transmission member, wherein the first transmission member comprises a plurality of pressure protrusions positioned vertically below a coil shaft provided on each of the plurality of insertion coils, and spaced apart in one direction in which the plurality of insertion coils are spaced apart.

[0023] At this time, an air breaker may be provided, wherein the first transmission member comprises: a first transmission body extending in the one direction and having its upper side coupled to each of the plurality of pressure protrusions; and a rotational shaft member located on the lower side of the first transmission body, extending in the one direction and rotatably coupled to the second transmission member.

[0024] Additionally, an air breaker may be provided, wherein the transmission member comprises an elastic member that is coupled to the first transmission member and the second transmission member, respectively, and elastically supports the first transmission member and the second transmission member.

[0025] At this time, an air blocker may be provided, wherein the second transmission member includes an axial coupling portion that rotatably accommodates the rotational shaft member penetrating the elastic member.

[0026] Additionally, the above-mentioned second transmission member may be provided with a second transmission body extending in a direction toward the first transmission member and in a direction opposite thereto; and an axial coupling formed inside the second transmission body and rotatably accommodating the rotational axis member.

[0027] At this time, an air breaker may be provided, wherein the shaft coupling part comprises: a portion formed by being recessed on one side of the second transmission body; and another portion communicating with the portion and formed by penetrating in the width direction of the second transmission body.

[0028] Additionally, the above second transmission member may be provided with a spring coupling portion that is located on one side in the height direction of the second transmission body and elastically coupled to the frame, thereby providing an air-blocking circuit breaker.

[0029] At this time, an air breaker may be provided, wherein the frame comprises: a side frame surrounding the transmission member on one side; a spring support shaft coupled to the side frame and extending toward the transmission member; and a spring member coupled to the spring support shaft and the spring coupling part, respectively.

[0030] Additionally, the above-mentioned second transmission member may be provided with a guide groove that is formed through the interior of the second transmission body in the width direction and extends along the extension direction of the second transmission body.

[0031] At this time, an air breaker may be provided, wherein the frame comprises: a side frame surrounding the transmission member on one side; and a guide shaft coupled to the side frame, extending toward the transmission member and movably inserted into the guide groove.

[0032] Additionally, the second transmission member may be provided with an air-blocking circuit breaker configured to be movable along the extension direction of the second transmission body while the guide shaft is inserted into the guide groove.

[0033] According to the above configuration, the air-circuit breaker according to the embodiment of the present invention can reliably perform a closing operation.

[0034] In addition, according to the above configuration, the air-circuit breaker according to an embodiment of the present invention may be provided with a plurality of closing coils for performing a closing operation.

[0035] In addition, according to the above configuration, the air circuit breaker according to the embodiment of the present invention can receive the operation of a plurality of insertion coils from a single configuration.

[0036] In addition, according to the above configuration, the air-circuiting device according to the embodiment of the present invention may have a single configuration that can be moved or rotated in multiple directions.

[0037] In addition, according to the above configuration, the air-circuit breaker according to the embodiment of the present invention can perform a closing operation even if any one of the plurality of closing coils malfunctions.

[0038] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

[0039] FIG. 1 is a perspective view illustrating an air-circuit breaker according to an embodiment of the present invention.

[0040] Figure 2 is a front view illustrating the air breaker of Figure 1.

[0041] Fig. 3 is a side view illustrating the air breaker of Fig. 1.

[0042] Fig. 4 is an exploded perspective view illustrating the air breaker of Fig. 1.

[0043] Fig. 5 is a plan view illustrating the air breaker of Fig. 4.

[0044] Figure 6 is an enlarged view of part A of Figure 5.

[0045] Fig. 7 is a partially cutaway perspective view illustrating the air breaker of Fig. 1.

[0046] Fig. 8 is a side view illustrating the air breaker of Fig. 7.

[0047] Figure 9 is an enlarged view of part B of Figure 8.

[0048] FIGS. 10 and FIGS. 11 are perspective views illustrating a transmission member provided in the air-blocking circuit breaker of FIG. 1.

[0049] FIGS. 12 and FIGS. 13 are exploded perspective views illustrating the transfer member of FIGS. 10 and FIGS. 11.

[0050] FIG. 14 is a front view illustrating the transfer member of FIG. 10 and FIG. 11.

[0051] FIG. 15 is a side view illustrating the transfer member of FIG. 10 and FIG. 11.

[0052] FIG. 16 is a BB perspective cross-sectional view illustrating the transfer member of FIG. 10 and FIG. 11.

[0053] FIGS. 17 to 19 are perspective views illustrating the process of operation of the transmission member of FIGS. 10 and FIG. 11.

[0054] FIG. 20 is a cross-sectional view AA showing the interior of the air breaker of FIG. 1.

[0055] Figure 21 is an enlarged view of part B of Figure 8 showing the interior of the air breaker of Figure 1.

[0056] FIGS. 22 to 26 are drawings illustrating an air-circuiting circuit breaker and a transmission member provided therein according to the prior art.

[0057] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the description in the drawings have been omitted, and the same reference numerals have been used throughout the specification for identical or similar components.

[0058] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.

[0059] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical ideas of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.

[0060] In the following description, descriptions of some components may be omitted to clarify the features of the present invention.

[0061]

[0062] In the following description, the term "connection" refers to one or more members being connected to each other in a manner that allows for fluid communication. In one embodiment, the connection may be formed by members such as a conduit, a pipe, or a piping system. In the following description, the term "connection" may be used interchangeably with the meaning that one or more members are "fluidly connected" to each other.

[0063] In the following description, the term "conduction" means that one or more components are connected to each other to transmit current or electrical signals. In one embodiment, the conduction may be formed in a wired form by a conductor member, etc., or in a wireless form such as Bluetooth, Wi-Fi, or RFID. In one embodiment, the conduction may include the meaning of "communication."

[0064] As used in the following description, the term "fluid" refers to any form of substance that flows due to an external force and whose shape or volume, etc., can be deformed. In one embodiment, the fluid may be a liquid such as water or a gas such as air.

[0065] The terms "upper side," "lower side," "left side," "right side," "front side," and "rear side" used in the following description shall be understood by referring to the coordinate system depicted throughout the attached drawings.

[0066]

[0067] Referring to FIGS. 1 through 9, an air circuit breaker (10) according to an embodiment of the present invention is illustrated as an example. The air circuit breaker (10) according to the illustrated embodiment is electrically connected to an external power source and load. The air circuit breaker (10) is configured to electrically connect to or disconnect the external power source and load.

[0068] The air circuit breaker (10) can be coupled with a closing coil (20). The air circuit breaker (10) can perform a closing operation in conjunction with the mechanical operation of a part of the closing coil (20). In the illustrated embodiment, the closing coil (20) is coupled to one side in the height direction of the air circuit breaker (10), i.e., the upper side.

[0069] The insertion coil (20) is electrically connected to an external control power source (not shown). When current is applied to the insertion coil (20), a movable core (not given a reference numeral) provided in the insertion coil (20) and a coil shaft (22) coupled thereto move toward the air circuit breaker (10) to strike the transmission member (400) to be described later. Accordingly, the transmission member (400) can rotate or move to apply an external force to other components of the air circuit breaker (10), thereby performing an insertion operation.

[0070] At this time, the air circuit breaker (10) can be combined with a plurality of closing coils (20) simultaneously. That is, the air circuit breaker (10) can be configured to perform a closing operation by an external force applied by one or more of the plurality of closing coils (20).

[0071] At the same time, a single transmission member (400) may be provided. That is, a single transmission member (400) may be linked to the operation of a plurality of insertion coils (20) to operate other components of the air circuit breaker (10). Accordingly, the insertion process of the air circuit breaker (10) under the control of the insertion coils (20) can be reliably performed.

[0072] In the illustrated embodiment, the air blocker (10) includes a frame (100), a lever member (200), a rotating assembly (300), and a transmission member (400).

[0073] The frame (100) forms the outer shape of the air circuit breaker (10) and is a part exposed to the outside. The frame (100) can be combined with or accommodate other components of the air circuit breaker (10).

[0074] Additionally, the frame (100) is coupled with and supports the input coil (20). In the illustrated embodiment, the frame (100) supports the input coil (20) from below, and the coil shaft (22), which is an internal component of the input coil (20), can move into the frame (100) to transmit operation to the transmission member (400).

[0075] The frame (100) is coupled with a lever member (200) to rotatably support it. In the illustrated embodiment, the lever member (200) is rotatably coupled to the right side of the frame (100) in the width direction.

[0076] The frame (100) is combined with the rotating assembly (300) to rotatably accommodate it. The rotating assembly (300) can be rotated by a rotational force applied by the lever member (200).

[0077] The frame (100) is combined with the transmission member (400) to support it so that it can move and rotate. The transmission member (400) may be housed inside the frame (100) and not exposed to the outside.

[0078] The frame (100) supports or accommodates other components of the air breaker (10) and may be of any shape capable of supporting the insertion coil (20) in conjunction with it. In the illustrated embodiment, the air breaker (10) is in the shape of a polygonal column having a length in the front-rear direction, a width in the left-right direction, and a height in the up-down direction.

[0079] In the illustrated embodiment, the frame (100) includes an upper frame (110), a side frame (120), a lever shaft (130), a guide shaft (140), a spring member (150), and a spring support shaft (160).

[0080] The upper frame (110) forms a part of the outer shape of the frame (100). In the illustrated embodiment, the upper frame (110) forms an upper part on one side in the height direction of the frame (100) and covers the space formed inside the frame (100) from the upper side.

[0081] The upper frame (110) is configured such that the frame (100) is coupled with the input coil (20). The upper frame (110) supports the input coil (20) from below, and a through hole is formed inside the upper frame (110) to form a passage through which the coil shaft (22) provided in the input coil (20) moves toward the transmission member (400) disposed inside the frame (100).

[0082] The upper frame (110) can support multiple input coils (20) simultaneously. In the illustrated embodiment, the upper frame (110) supports three input coils (20) simultaneously, and through holes can be formed in the number of input coils (20) coupled to the upper frame (110).

[0083] The upper frame (110) is combined with the side frame (120). The upper frame (110) can be seated on one side of the side frame (120) in the height direction, at the upper end.

[0084] The upper frame (110) supports the input coil (20) and may have any shape that can be combined with the side frame (120) to cover the space formed inside the frame (100). In the illustrated embodiment, the upper frame (110) is formed as a polygonal plate having a length in the front-rear direction and a width in the left-right direction, and a thickness in the up-down direction.

[0085] The side frame (120) constitutes another part of the outer shape of the frame (100). In the illustrated embodiment, the side frame (120) constitutes the left and right parts in the width direction of the frame (100) and covers the space formed inside the frame (100) from the left and right sides.

[0086] In the illustrated embodiment, a through hole is formed inside the side frame (120). A lever shaft (130) can pass through the through hole and be exposed to the outside. A lever member (200) is coupled to the lever shaft (130) to rotate a rotating assembly (300) to be described later.

[0087] The side frame (120) can support the guide shaft (140) and the spring support shaft (160). In the illustrated embodiment, the guide shaft (140) and the spring support shaft (160) are coupled and supported on the left side located on the inner right side of the side frame (120).

[0088] The side frame (120) is combined with the upper frame (110) and provides a passage through which the lever shaft (130) passes, and may be of any shape capable of being combined with and supporting the guide shaft (140) and the spring support shaft (160). In the illustrated embodiment, the side frame (120) is formed as a polygonal plate having a length in the front-rear direction, a height in the vertical direction, and a thickness in the left-right direction.

[0089] The lever shaft (130) is coupled with the lever member (200) and rotates together. The lever shaft (130) is coupled through a through hole formed in the side frame (120). One part of the lever shaft (130) is located on the outside of the side frame (120), and the other part is located on the inside of the side frame (120). The lever shaft (130) extends in the width direction of the frame (100), and in the left-right direction in the illustrated embodiment.

[0090] One longitudinal side, the right end of the lever shaft (130), is exposed to the outside of the side frame (120) and coupled with the lever member (200). The other longitudinal side, the left end of the lever shaft (130), is located inside the side frame (120) and coupled with the first rotating body (310).

[0091] Accordingly, the rotation of the lever member (200) can be transmitted to the first rotating body (310) through the lever shaft (130). The lever shaft (130), the lever member (200), and the first rotating body (310) rotate together.

[0092] The guide shaft (140) movably supports the transmission member (400). The guide shaft (140) is supported by being coupled to the inner surface of the side frame (120). The guide shaft (140) extends in the width direction of the frame (100), and in the left-right direction in the illustrated embodiment.

[0093] One side of the guide shaft (140) in the extension direction, the right end, is connected to and supported by the inner surface of the side frame (120). The other side of the guide shaft (140) in the extension direction, the left end, penetrates the guide groove (424) provided in the transmission member (400) and is exposed to the outside of the second transmission member (420).

[0094] The guide shaft (140) may be of any shape capable of movably supporting the transmission member (400). In the illustrated embodiment, the guide shaft (140) is a cylindrical shape having a circular cross-section and extending long in the left-right direction. The shape of the guide shaft (140) may be changed to correspond to the shape of the guide groove (424).

[0095] The spring member (150) is configured to elastically support the transmission member (400). The spring member (150) is coupled to the spring support shaft (160) and the spring coupling part (423), respectively. The spring member (150) extends between the spring support shaft (160) and the spring coupling part (423).

[0096] The spring member (150) may be provided in any shape capable of elastically supporting the transmission member (400). In the illustrated embodiment, the spring member (150) is provided in the form of a coil spring.

[0097] The spring member (150) can apply a restoring force toward the forward side to the transmission member (400). Specifically, the spring member (150) applies an elastic force so that the second transmission member (420) is pulled toward the first transmission member (410). Accordingly, the position of the second transmission member (420) and the first transmission member (410) coupled thereto can be stably maintained even when no external force is applied by the input coil (20).

[0098] Specifically, the first transmission member (410) can be pulled toward the input coil (20), that is, toward the front, by the elastic force applied by the spring member (150). Accordingly, the pressure projection (412) of the first transmission member (410) can be positioned vertically below the coil shaft (22) of the input coil (20) (see FIG. 21).

[0099] The spring support shaft (160) is coupled to the spring member (150). The spring support shaft (160) supports one side of the spring member (150) in the longitudinal direction, thereby forming a support portion for the spring member (150) to elastically support the transmission member (400). In the illustrated embodiment, the spring support shaft (160) is coupled to and supports the front end of the spring member (150).

[0100] The spring support shaft (160) is coupled to the side frame (120). The spring support shaft (160) is coupled to and supported by the inner surface of the side frame (120). The spring support shaft (160) extends in the width direction of the frame (100), and in the left-right direction in the illustrated embodiment.

[0101] One side of the extension direction of the spring support shaft (160), the right end in the illustrated embodiment, is connected to and supported by the inner surface of the side frame (120). The other side of the extension direction of the spring support shaft (160), the left end in the illustrated embodiment, is located inside the frame (100). At this time, a groove may be formed in the left end of the spring support shaft (160) to be connected to the end of the spring member (150).

[0102] The spring support shaft (160) may be of any shape capable of being combined with and supporting the spring member (150). In the illustrated embodiment, the spring support shaft (160) is a cylindrical shape having a circular cross-section and extending long in the left-right direction.

[0103] The lever member (200) applies rotational force to the rotating assembly (300). The rotating assembly (300) is rotated by the rotational force applied by the lever member (200) and can restrict the movement of the transmission member (400).

[0104] The lever member (200) is coupled to the frame (100). The lever member (200) can be coupled to the lever shaft (130) and rotated together. The lever member (200) can be rotatably supported on the right side of the side frame (120), which is located on the right side in the illustrated embodiment. That is, the lever member (200) is exposed on the outside of the frame (100).

[0105] The lever member (200) may be provided in any form that can be grasped by a worker or any device to apply rotational force to the rotating assembly (300). In the illustrated embodiment, the lever member (200) is provided in the form of a lever.

[0106] The rotating assembly (300) is coupled with the lever member (200) and rotates together. The movement or rotation of the transmission member (400) may be restricted by the rotation of the rotating assembly (300).

[0107] The rotational assembly (300) is housed inside the frame (100). The rotational assembly (300) is coupled to the side frame (120) and is rotatably supported. The rotational assembly (300) is coupled to the lever shaft (130). The rotational assembly (300) can receive rotational force applied to the lever member (200) through the lever shaft (130).

[0108] In the illustrated embodiment, the rotating assembly (300) includes a first rotating body (310), a second rotating body (320), and a pressurizing arm (330).

[0109] The first rotating body (310) constitutes a part of the rotating assembly (300). The first rotating body (310) is the part of the rotating assembly (300) that is coupled to the lever shaft (130). In the illustrated embodiment, the first rotating body (310) is located on one side in the height direction of the frame (100), i.e., the lower side, and is coupled to the lever shaft (130). The first rotating body (310) can receive rotational force applied to the lever member (200) through the lever shaft (130). The first rotating body (310) can rotate together with the lever shaft (130).

[0110] The first rotating body (310) is coupled with the second rotating body (320). The rotation of the first rotating body (310) can be converted into the rotation of the second rotating body (320). Accordingly, the pressure arm (330) coupled with the second rotating body (320) can also be rotated.

[0111] The first rotating body (310) may be of any shape that is coupled to the lever shaft (130) to receive the rotational force of the lever member (200) and coupled to the second rotating body (320) to transmit the rotational force. In the illustrated embodiment, the first rotating body (310) is provided as a disc-shaped member having a circular cross-section and a thickness in the left-right direction.

[0112] The second rotating body (320) receives rotational force from the first rotating body (310) and can rotate together with the pressure arm (330) accordingly. The second rotating body (320) is coupled to the first rotating body (310) and the pressure arm (330), respectively.

[0113] The second rotating body (320) is located on the middle side of the height direction of the frame (100). The second rotating body (320) is located between the first rotating body (310) and the pressure arm (330) along the height direction of the frame (100). One side of the second rotating body (320) in the height direction, the lower side in the illustrated embodiment, is connected to the first rotating body (310). The other side of the second rotating body (320) in the height direction, the upper side in the illustrated embodiment, is connected to the pressure arm (330).

[0114] The second rotating body (320) may have any shape that can be combined with the first rotating body (310) and the pressure arm (330) respectively and rotated together. In the illustrated embodiment, the second rotating body (320) is provided as a plate-shaped member having a fan-shaped cross-section and a thickness in the left-right direction.

[0115] The pressure arm (330) is rotated together with the second rotating body (320) and moved in a direction toward the transmission member (400) or in a direction opposite thereto. When the pressure arm (330) is moved and comes into contact with the transmission member (400), the movement or rotation of the transmission member (400) may be restricted.

[0116] Additionally, the pressure arm (330) can be rotated together with the second rotating body (320) to press the transmission member (400) toward the rear. Accordingly, an input signal can be applied to a micro switch (not shown) by the transmission member (400) moved toward the rear.

[0117] The pressure arm (330) is coupled to the second rotating body (320). The pressure arm (330) is coupled to the other side, i.e., the upper side, in the height direction of the second rotating body (320). The pressure arm (330) is located at the uppermost position among the components of the rotating assembly (300).

[0118] Referring again to FIGS. 5 to 9, an air-circuiting circuit breaker (10) according to an embodiment of the present invention includes a transmission member (400).

[0119] The transmission member (400) is moved or rotated by the physical force applied by the insertion coil (20), thereby moving or rotating another component of the air circuit breaker (10). Accordingly, the air circuit breaker (10) can perform an insertion operation. That is, the transmission member (400) is configured to initiate the insertion operation of the air circuit breaker (10) in conjunction with the operation of the insertion coil (20).

[0120] To this end, the transfer member (400) is positioned adjacent to the input coil (20). In the illustrated embodiment, the transfer member (400) is positioned above the input coil (20) and the upper frame (110) supporting it.

[0121] Additionally, the transmission member (400) according to an embodiment of the present invention can initiate an insertion operation in conjunction with the operation of a plurality of insertion coils (20). To this end, the transmission member (400) may include a configuration for being pressed or struck by a plurality of insertion coils (20).

[0122] The transmission member (400) is coupled to the frame (100). The transmission member (400) is movably and rotatably accommodated in the internal space of the frame (100). The transmission member (400) can be elastically supported by being coupled to a spring member (150).

[0123] The transmission member (400) is positioned adjacent to the pressure arm (330). The movement and rotation of the transmission member (400) may be restricted by the pressure arm (330).

[0124] In the embodiments illustrated in FIGS. 10 to 16, the transfer member (400) includes a first transfer member (410), a second transfer member (420), and an elastic member (430).

[0125] The first transmission member (410) constitutes a part of the transmission member (400). The first transmission member (410) is configured to be pressed or struck by the coil shaft (22) of the input coil (20). In the illustrated embodiment, the first transmission member (410) constitutes one side in the longitudinal direction of the transmission member (400), that is, the front side.

[0126] The first transmission member (410) is positioned adjacent to the input coil (20). The first transmission member (410) is positioned toward the upper frame (110) that supports the input coil (20). The first transmission member (410) can be pressed or struck by a coil shaft (22) that is inserted through a through hole formed in the upper frame (110).

[0127] The first transmission member (410) is coupled to the second transmission member (420). Specifically, the first transmission member (410) is rotatably coupled to the second transmission member (420). The first transmission member (410) can be rotated clockwise or counterclockwise around a portion coupled to the second transmission member (420) as an axis.

[0128] The first transmission member (410) is coupled with the elastic member (430). The first transmission member (410) can be elastically supported by the elastic member (430). Accordingly, when the first transmission member (410) is not pressed or struck by the coil shaft (22), the first transmission member (410) can be maintained at a predetermined angle with the second transmission member (420).

[0129] In the illustrated embodiment, the first transmission member (410) includes a first transmission body (411), a pressure projection (412), and a rotation axis member (413).

[0130] The first transmission body (411) constitutes the body of the first transmission member (410). Other components of the first transmission member (410) may be coupled to the first transmission body (411). In the illustrated embodiment, the first transmission body (411) is coupled with a pressure projection (412) and a rotation axis member (413).

[0131] The first transmission body (411) extends in the width direction of the frame (100), in the left-right direction in the illustrated embodiment. A pressure projection (412) is attached to one side in the height direction of the first transmission body (411), in the upper side in the illustrated embodiment. A rotation axis member (413) is attached to the other side in the height direction of the first transmission body (411), in the rear side in the illustrated embodiment. The first transmission body (411) can be rotated together with the pressure projection (412) and the rotation axis member (413).

[0132] The pressure projection (412) is configured such that the first transmission member (410) contacts the coil shaft (22). The pressure projection (412) can be pressed or struck by the descending coil shaft (22). The pressure projection (412) can be rotated by the coil shaft (22) around the rotation axis member (413) as an axis. Accordingly, the closing operation of the air circuit breaker (10) can be initiated.

[0133] The pressure projection (412) is coupled to the first transmission body (411). The pressure projection (412) is coupled to one side in the height direction of the first transmission body (411), the upper front side in the illustrated embodiment. The pressure projection (412) extends in a direction opposite to the rotation axis member (413), toward the front side in the illustrated embodiment.

[0134] At this time, the pressure projection (412) may be configured to include a portion that extends obliquely with respect to the first transmission body (411) and a portion that extends horizontally. That is, in the illustrated embodiment, the pressure projection (412) is configured to include a portion that is located on the front side and extends horizontally, and another portion that is continuous with said portion and extends obliquely toward the first transmission body (411).

[0135] Multiple pressure protrusions (412) may be provided. Multiple pressure protrusions (412) may be positioned at different locations. Multiple pressure protrusions (412) may come into contact with each coil shaft (22) provided in multiple input coils (20).

[0136] In the illustrated embodiment, the pressure projection (412) is provided as a pair including a first pressure projection (412a) and a second pressure projection (412b). The first pressure projection (412a) and the second pressure projection (412b) are spaced apart in the longitudinal direction of the first transmission body (411), i.e., in the left-right direction.

[0137] At this time, the first pressure projection (412a) and the second pressure projection (412b) may be positioned vertically below the coil shaft (22) of the different input coils (20) (see FIG. 20). Accordingly, when one or more of the pair of input coils (20) are operated, one or more of the first pressure projection (412a) and the second pressure projection (412b) may be pressed or struck by the coil shaft (22), and the transfer member (400) may begin an input operation.

[0138] The rotational axis member (413) is configured such that the first transmission member (410) is rotatably coupled to the second transmission member (420). The rotational axis member (413) can be coupled to the shaft coupling portion (422) and the elastic member (430) of the second transmission member (420), respectively. The rotational axis member (413) functions as the rotational axis of the first transmission member (410).

[0139] The rotational axis member (413) is coupled to the first transmission body (411). The rotational axis member (413) is coupled to the rear side of the lower side in the height direction of the first transmission body (411) in the illustrated embodiment. The rotational axis member (413) extends toward the second transmission member (420) in the direction toward the right side in the illustrated embodiment.

[0140] The rotational shaft member (413) is rotatably coupled to the shaft coupling portion (422). The rotational shaft member (413) is at least partially received in the shaft coupling portion (422) and penetrates the shaft coupling portion (422). The longitudinal end of the rotational shaft member (413) may be exposed to the outside of the shaft coupling portion (422). At this time, an O-ring or the like may be coupled to the end of the rotational shaft member (413) so that the rotational shaft member (413) does not accidentally detach from the shaft coupling portion (422).

[0141] The rotational shaft member (413) may be of any shape that can be rotatably coupled to the shaft coupling member (422). In the illustrated embodiment, the rotational shaft member (413) is a cylindrical shape having a circular cross-section and a length in the left-right direction. The shape of the rotational shaft member (413) may be changed to correspond to the shape of the shaft coupling member (422).

[0142] The second transmission member (420) constitutes another part of the transmission member (400). The second transmission member (420) is configured to move in correspondence with the rotation of the first transmission member (410) to press or strike another component of the air blocker (10). In the illustrated embodiment, the second transmission member (420) constitutes the other side in the longitudinal direction of the transmission member (400), i.e., the rear side.

[0143] The second transmission member (420) is positioned adjacent to another component of the air circuit breaker (10). In one embodiment, the second transmission member (420) may be maintained in contact with a component of the air circuit breaker (10). When the second transmission member (420) is moved, the component may be pressurized to perform an insertion operation.

[0144] The second transmission member (420) is coupled with the spring member (150). The second transmission member (420) is elastically supported by the spring member (150). When no external force is applied to the second transmission member (420), the second transmission member (420) can be maintained in its original position without moving.

[0145] The second transmission member (420) is coupled to the first transmission member (410). Specifically, the second transmission member (420) is rotatably coupled to the first transmission member (410). The second transmission member (420) can be rotated clockwise or counterclockwise relative to the first transmission member (410).

[0146] The second transmission member (420) is coupled with the elastic member (430). The second transmission member (420) can be elastically supported by the elastic member (430). Accordingly, when the first transmission member (410) is not pressed or struck by the coil shaft (22), the first transmission member (410) and the second transmission member (420) can be maintained at a predetermined angle to each other.

[0147] In the illustrated embodiment, the second transmission member (420) includes a second transmission body (421), an axial coupling part (422), a spring coupling part (423), and a guide groove (424).

[0148] The second transmission body (421) constitutes the body of the second transmission member (420). Other components of the second transmission member (420) may be combined or formed in the second transmission body (421). In the illustrated embodiment, an axial coupling part (422) and a guide groove (424) are formed inside the second transmission body (421), and a spring coupling part (423) is coupled.

[0149] The second transmission body (421) extends in the longitudinal direction of the frame (100), in the front-rear direction in the illustrated embodiment. An axial coupling part (422) is formed by being recessed and penetrating into the inner side of the portion adjacent to the front end in the longitudinal direction of the second transmission body (421) in the illustrated embodiment. A spring coupling part (423) is coupled into the upper side in the height direction of the second transmission body (421) in the illustrated embodiment. A guide groove (424) is formed penetrating into the interior of the second transmission body (421) in the width direction of the second transmission body (421), in the left-right direction in the illustrated embodiment.

[0150] The shaft coupling portion (422) is configured such that the second transmission member (420) is rotatably coupled to the first transmission member (410). A rotational shaft member (413) is rotatably coupled to the shaft coupling portion (422). The second transmission member (420) can be rotated relative to the first transmission member (410) with the shaft coupling portion (422) and the rotational shaft member (413) coupled thereto as the axis. The shaft coupling portion (422) accommodates the rotational shaft member (413) and the elastic member (430) coupled thereto.

[0151] The shaft coupling portion (422) is formed inside the second transmission body (421). Specifically, the shaft coupling portion (422) is located on one side in the longitudinal direction of the second transmission body (421), that is, in a portion adjacent to the front end. The shaft coupling portion (422) may be configured to include a portion penetrating the second transmission body (421) and a recessed portion. In the illustrated embodiment, the shaft coupling portion (422) is configured to include a portion formed recessed on the inner side, i.e., the left side, of the second transmission body (421), and another portion penetrating the width direction, i.e., the left-right direction, of the second transmission body (421).

[0152] The shaft coupling portion (422) may be of any shape that can be rotatably coupled with the rotational shaft member (413). In the illustrated embodiment, the part of the shaft coupling portion (422) is formed as a cylindrical space with the left side open. Additionally, the other part of the shaft coupling portion (422) is formed as a cylindrical space with both the left and right sides open.

[0153] The spring coupling portion (423) is configured such that the second transmission member (420) is coupled with the spring member (150). The spring coupling portion (423) is coupled to one side in the height direction of the second transmission body (421), specifically to the upper side in the illustrated embodiment. The spring coupling portion (423) is formed to extend to one side in the width direction of the second transmission body (421), specifically to the right in the illustrated embodiment. The spring coupling portion (423) is formed to protrude outward relative to the second transmission body (421).

[0154] The spring coupling portion (423) is coupled to one end of the spring member (150) in the extension direction, and to the rear end in the illustrated embodiment. At this time, a ring may be formed at the end of the spring coupling portion (423) to prevent accidental separation from the end of the spring member (150).

[0155] That is, the end of the spring coupling part (423) may be configured to include a portion extending to the rear side and another portion that is continuous with said portion and extends to the left side.

[0156] As the spring coupling portion (423) is coupled with the spring member (150), the second transmission member (420) can be elastically supported by the spring member (150). Accordingly, when the coil shaft (22) is not moved, the first transmission member (410) and the second transmission member (420) can be maintained at the same position and angle.

[0157] The guide groove (424) is the portion where the transmission member (400) is joined to the guide shaft (140). The guide groove (424) is formed through the second transmission body (421) in the width direction, in the left-right direction in the illustrated embodiment, and extends in the front-back direction in the length direction of the second transmission body (421) in the illustrated embodiment.

[0158] A guide shaft (140) is movably inserted into the guide groove (424). The second transmission member (420) can be moved while the guide shaft (140) is received in the guide groove (424). As described above, since the guide shaft (140) is fixedly coupled to the side frame (120), it will be understood that the transmission member (400) is moved while the coupling between the guide groove (424) and the guide shaft (140) is maintained.

[0159] The guide groove (424) may be of any shape capable of movably accommodating the guide shaft (140). In the illustrated embodiment, the guide groove (424) is formed as a space having a cross-section in the shape of an oblong and a thickness in the left-right direction.

[0160] Although not indicated by a reference numeral, a switch operating part may be formed on one side in the longitudinal direction of the second transmission body (421), in the illustrated embodiment, on the rear side. The switch operating part is formed to protrude in the width direction, in the illustrated embodiment, to the right, from the rear end of the second transmission body (421).

[0161] When the second transmission body (421) is moved to the rear side by a predetermined distance, the switch operating part (not given a reference numeral) can operate a micro switch (not shown) provided in the frame (100). Accordingly, an input signal can be applied from the micro switch (not shown).

[0162] The elastic member (430) elastically supports the first transmission member (410) and the second transmission member (420). By the elastic member (430), the first transmission member (410) and the second transmission member (420) can be maintained at a preset angle unless an external force is applied.

[0163] The elastic member (430) is coupled with the rotational axis member (413) and the axis coupling member (422). Specifically, the rotational axis member (413) is penetrated by the elastic member (430) and rotatably received by the axis coupling member (422). Accordingly, the elastic member (430) can be coupled with both the first transmission member (410) and the second transmission member (420).

[0164] The elastic member (430) may be provided in any form capable of elastically supporting the first transmission member (410) and the second transmission member (420). In the illustrated embodiment, the elastic member (430) is provided in the form of a torsion spring.

[0165] In the illustrated embodiment, the elastic member (430) includes a first elastic extension (431), a second elastic extension (432), and an elastic hollow (433).

[0166] The first elastic extension (431) constitutes a part of the elastic member (430). The first elastic extension (431) is the part where the elastic member (430) comes into contact with the first transmission member (410). The first elastic extension (431) comes into contact with one side in the height direction of the first transmission body (411), the lower side in the illustrated embodiment, and elastically supports the first transmission member (410).

[0167] The second elastic extension (432) constitutes another part of the elastic member (430). The second elastic extension (432) is the part where the elastic member (430) contacts the second transmission member (420). The second elastic extension (432) contacts one side in the longitudinal direction of the second transmission body (421), the front side in the illustrated embodiment, and elastically supports the second transmission member (420).

[0168] The first elastic extension (431) and the second elastic extension (432) are continuous with each other. At this time, the portion where the first elastic extension (431) and the second elastic extension (432) are continuous is formed by winding multiple times, and an elastic hollow (433) is formed inside.

[0169] The elastic hollow (433) is an opening formed inside the elastic member (430). Each side of the elastic hollow (433), the left and right sides in the illustrated embodiment, are formed as open. A rotational axis member (413) is connected through the elastic hollow (433).

[0170]

[0171] Referring to FIGS. 17 to 19, each component of the transmission member (400) provided in the air-circuit breaker (10) according to an embodiment of the present invention is shown in a rotated or moved state as an example.

[0172] As illustrated in FIG. 17, the first transmission member (410) can be rotated clockwise or counterclockwise relative to the second transmission member (420) with the rotation axis member (413) as the axis. When the coil shaft (22) presses or strikes the pressure projection (412), the first transmission member (410) can be rotated counterclockwise. At this time, the first transmission member (410) presses the elastic member (430) while rotating, and the elastic member (430) undergoes shape deformation and stores a restoring force.

[0173] When the external force applied to the pressure projection (412) is released, the first transmission member (410) is rotated clockwise by the restoring force stored in the elastic member (430), so that the first transmission member (410) and the second transmission member (420) can be maintained at an initial angle.

[0174] Referring to FIGS. 18 and 19, the transmission member (400) can be moved along the longitudinal direction of the second transmission member (420), i.e., the front side or the rear side, while the guide shaft (140) is inserted into the guide groove (424).

[0175] Accordingly, when the first transmission member (410) is rotated by a predetermined angle, the second transmission member (420) moves and pressurizes another component of the air blocker (10) to perform an insertion operation.

[0176] At this time, the second transmission member (420) can be moved forward by the elastic force applied by the spring member (150). Additionally, the second transmission member (420) can be moved backward by the pressure applied by the pressure arm (330).

[0177]

[0178]

[0179] Referring to FIGS. 20 to 21, the combined state of an air circuit breaker (10) and an insertion coil (20) according to an embodiment of the present invention is illustrated as an example.

[0180] As described above, the air circuit breaker (10) according to an embodiment of the present invention can be combined with a plurality of insertion coils (20). In the embodiment illustrated in FIG. 20, a pair of insertion coils (20) are positioned on the upper side of the air circuit breaker (10).

[0181] The input coil (20) is provided with a coil body (21) that forms its outer shape and a coil shaft (22) positioned therein so as to be vertically movable. The coil shaft (22) is coupled with an upper movable core (not given a reference numeral) and moves up and down together with it.

[0182] When current is applied from an external control power source, the lower fixed core (not labeled in the drawing) is magnetized, and a magnetic attractive force is applied to the movable core (not labeled in the drawing). Accordingly, the movable core (not labeled in the drawing) and the coil shaft (22) coupled thereto move downward.

[0183] At this time, a through hole is formed in the upper frame (110) supporting the input coil (20) at a position corresponding to the coil shaft (22) and the pressure projection (412). The coil shaft (22) passes through the through hole and presses or strikes the pressure projection (412).

[0184] At this time, a plurality of pressure protrusions (412) are provided and may be positioned vertically downward from each of the coil shafts (22) of the plurality of input coils (20). That is, in the illustrated embodiment, a first pressure protrusion (412a) is positioned vertically downward from the coil shaft (22) of the input coil (20) on the left, and a second pressure protrusion (412b) is positioned vertically downward from the coil shaft (22) of the input coil (20) on the right.

[0185] Accordingly, even if any one of the multiple input coils (20) malfunctions, the pressure projection (412) can be pressed or struck by the other coil shaft (22). Accordingly, the input operation can be reliably performed even in the above case.

[0186] Referring to FIG. 21, the operation process of a transmission member (400) according to an embodiment of the present invention is illustrated as an example.

[0187] As described above, the first transmission member (410) and the second transmission member (420) coupled thereto are maintained in a state of being pulled forward by the elastic force applied by the spring member (150).

[0188] Accordingly, the pressure projection (412) of the first transmission member (410) is located vertically below the coil shaft (22).

[0189] When the input coil (20) is activated, the coil shaft (22) moves downward and applies an external force in a downward direction to the pressure projection (412) of the first transmission member (410) (①). Accordingly, the first transmission member (410) rotates counterclockwise around the rotation axis member (413) (②).

[0190] Accordingly, the first transmission member (410) presses the first mechanism (M1), causing the first mechanism (M1) to rotate clockwise and release the second mechanism (M2) (③). The second mechanism (M2), released from the first mechanism (M1), rotates clockwise, releasing and rotating other components not given a reference numeral (④).

[0191] When the input process is completed, the second rotating body (320) and the pressure arm (330) coupled thereto are rotated counterclockwise to press the first transmission member (410) (⑤).

[0192] Accordingly, the first transmission member (410) and the second transmission member (420) coupled thereto are moved to the rear side, so that an input signal can be applied by operating a micro switch not shown (⑥).

[0193]

[0194] Although embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the spirit of the present invention.

[0195] 10: Air circuit breaker 20: Closing coil

[0196] 21: Coil body 22: Coil shaft

[0197] 100: Frame 110: Upper Frame

[0198] 120: Side frame 130: Lever shaft

[0199] 140: Guide shaft 150: Spring member

[0200] 160: Spring support shaft 200: Lever member

[0201] 300: Rotating assembly 310: First rotating body

[0202] 320: Second rotating body 330: Pressurized arm

[0203] 400: Transmission member 410: First transmission member

[0204] 411: First transmission body 412: Pressure projection

[0205] 412a: 1st pressure projection 412b: 2nd pressure projection

[0206] 413: Rotation axis member 420: Second transmission member

[0207] 421: Second transmission body 422: Shaft coupling

[0208] 423: Spring connection part 424: Guide groove

[0209] 430: Elastic member 431: First elastic extension

[0210] 432: Second elastic extension 433: Elastic hollow

[0211] M1: First mechanism M2: Second mechanism

[0212] 1000: Air circuit breaker according to the prior art

[0213] 1100: Air circuit breaker body 1200: Air circuit breaker lever

[0214] 1300: Transmission absence 1310: Contact point

Claims

1. A frame constituting the exterior; and It includes a transmission member configured to perform an insertion operation by being received inside the frame, elastically coupled to the frame, and pressurized by a plurality of insertion coils located outside the frame. The above-mentioned transmission member is, A first transfer member in contact with the above-mentioned input coil; and It includes a second transmission member rotatably coupled to the first transmission member, and The first transmission member above is, The plurality of input coils are spaced apart in one direction, and each of the plurality of input coils includes a plurality of pressure protrusions located vertically below the coil shaft provided in each of the plurality of input coils. Crane circuit breaker.

2. In Paragraph 1, The first transmission member above is, A first transmission body extending in the above-mentioned direction, with its upper portion each coupled to a plurality of the above-mentioned pressure protrusions; and A rotating shaft member positioned at the lower side of the first transmission body and extending in one direction and rotatably coupled to the second transmission member, Crane circuit breaker.

3. In Paragraph 2, The above-mentioned transmission member is, A elastic member comprising, respectively coupled to the first transmission member and the second transmission member and elastically supporting the first transmission member and the second transmission member, Crane circuit breaker.

4. In Paragraph 3, The above second transmission member is, A shaft coupling portion comprising a rotating shaft member penetrating the elastic member and rotatably receiving the rotating shaft member, Crane circuit breaker.

5. In Paragraph 2, The above second transmission member is, A second transmission body extending in a direction toward the first transmission member and in a direction opposite thereto; A shaft coupling portion formed inside the second transmission body and rotatably accommodating the rotational shaft member, Crane circuit breaker.

6. In Paragraph 5, The above shaft coupling part is, A portion formed by being recessed on one side of the second transmission body; and Composed of another part that is in communication with the above-mentioned part and is formed to penetrate in the width direction of the second transmission body, Crane circuit breaker.

7. In Paragraph 5, The above second transmission member is, A spring coupling member positioned on one side in the height direction of the second transmission body and elastically coupled to the frame, Crane circuit breaker.

8. In Paragraph 7, The above frame is, A side frame surrounding the above-mentioned transmission member on one side; A spring support shaft coupled to the above-mentioned side frame and extending toward the above-mentioned transmission member; and A spring member comprising a spring member that is respectively coupled to the spring support shaft and the spring coupling part, Crane circuit breaker.

9. In Paragraph 5, The above second transmission member is, A guide groove formed penetrating in the width direction within the second transmission body and extending along the extension direction of the second transmission body. Crane circuit breaker.

10. In Paragraph 9, The above frame is, A side frame surrounding the above-mentioned transmission member on one side; and A guide shaft that is coupled to the side frame and extends toward the transmission member and is movably inserted into the guide groove, Crane circuit breaker.

11. In Paragraph 10, The above second transmission member is, The guide shaft is configured to be movable along the extension direction of the second transmission body while inserted into the guide groove. Crane circuit breaker.

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