CN110235324B - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN110235324B CN110235324B CN201780084654.9A CN201780084654A CN110235324B CN 110235324 B CN110235324 B CN 110235324B CN 201780084654 A CN201780084654 A CN 201780084654A CN 110235324 B CN110235324 B CN 110235324B
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- Prior art keywords
- unit
- main circuit
- breaker main
- circuit breaker
- circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Abstract
The technical problem is to improve the operability of the circuit breaker. The circuit breaker includes a circuit breaker main circuit (31), a circuit breaker main circuit carrying unit (20), a fixed-side locking member (25), a front-side unit (26), and a switchboard (90). A lock releasing member (24) is attached to the front side unit (26) or the fixed side lock member (25). When the circuit breaker main circuit carrying unit (20) is placed at a first position, the moving-side locking member (23) is located at an initial position, when the circuit breaker main circuit carrying unit (20) moves from the first position to a rear side, the moving-side locking member (23) moves toward a pull-in position in conjunction with the unlocking member (24), and when the circuit breaker main circuit carrying unit (20) reaches a second position that is further to the rear side than the first position, the moving-side locking member (23) returns from the pull-in position to the initial position and engages with an engagement hole (25a) formed in the fixed-side locking member (25).
Description
Technical Field
The present invention relates to a circuit breaker, and more particularly, to a circuit breaker including an in-tray insertion interlock mechanism for preventing an accidental operation of pulling out a main circuit of the circuit breaker from a tray.
Background
In a circuit breaker, a circuit breaker main body (circuit breaker main circuit) is provided inside a distribution board including a door (for example, patent documents 1 to 3). The circuit breaker including the in-tray insertion interlocking mechanism is mounted with an external operating mechanism to operate the position of the circuit breaker main body from outside the tray. In the above-described circuit breaker, an in-tray insertion interlock mechanism is provided to prevent an operation of the circuit breaker main body to be accidentally pulled out toward the outside of the tray.
The circuit breaker including an in-tray insertion interlocking mechanism has an external operation mechanism to operate a position of a circuit breaker main body from outside the tray in a state where a door of a distribution board is closed. When the breaker body is moved out of the tray or inserted into the tray, the door of the distribution board is opened and the breaker body is directly moved manually. The circuit breaker including the in-tray insertion interlock mechanism has the interlock mechanism as described above with respect to the above-described pulling-out operation and inserting operation.
That is, when the breaker main body is pulled out from the inside of the switchboard, the movement locking mechanism (the movement-side locking member and the fixed-side locking member) is operated to prevent the breaker main body from being accidentally pulled out of the switchboard. The movement locking mechanism is in contact with a cabinet of the switchboard to prevent an accidental pull-out operation of the circuit breaker main body toward the outside of the switchboard. The operator can perform the operation of releasing the movement lock mechanism to pull out the breaker main body from the tray. At this time, the movement lock mechanism is manually released, whereby the breaker body is inserted into the tray.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2011-10544
Patent document 2: japanese patent laid-open No. 63-81607
Patent document 3: japanese patent laid-open No. 2012-253895
Disclosure of Invention
Technical problem to be solved by the invention
As described above, the equipment that can be pulled out from the switchboard includes the breaker main body. The equipment may be accidentally dropped or dropped from the switchboard due to an out-tray pull-out operation caused by an erroneous operation. To prevent the equipment from falling and falling off from the switchboard, the circuit breaker is equipped with a movement locking mechanism. By releasing the movement lock mechanism, the operator can perform an operation of pulling out the distribution board to the outside and an operation of inserting the distribution board into the inside. The circuit breaker main body having the external operating mechanism also has a movement locking mechanism. The movable locking mechanism is clamped with the casing of the switchboard to prevent the accidental pulling out of the main body of the circuit breaker.
In order to realize the common structure of the circuit breaker with the external operating mechanism and the circuit breaker without the external operating mechanism, a structural unit of the external operating mechanism is installed at the lower part of the circuit breaker main body. Therefore, when the release mechanism for moving the lock mechanism is provided near the center of gravity of the breaker main body, the release mechanism needs to be constituted by a plurality of links. The release mechanism of the movement lock mechanism is attached to a structural unit of the external operating mechanism.
The circuit breaker with an external operating mechanism includes an in-tray insertion/out-tray pull-out unit (circuit breaker main circuit carrying unit), a circuit breaker chamber case (compartment), and a circuit breaker main body. The in-tray inserting/out-tray drawing unit is used when a breaker main body having an external operating mechanism is inserted into a tray. A circuit breaker body having an external operating mechanism is inserted into the tray. In the in-tray insertion/out-tray pull-out unit of the circuit breaker having the external operation mechanism, the movement lock mechanism is also brought into contact with the engagement portion of the breaker chamber case when the tray of the circuit breaker main body is inserted. When the operator performs the insertion operation, the operator needs to pull the operation handle of the in-tray insertion/out-tray unit in the center direction to release the movement lock mechanism.
After the operator performs the operation of releasing the movement lock mechanism, the operator holds a portion of the breaker main body away from the center of gravity in the height direction and inserts the breaker main body into the inside of the switchboard. Therefore, a larger operation force is required than when the disk insertion operation is performed near the center of gravity of the breaker main body. Next, the operator inserts the breaker main body into the switchboard while performing the release operation. At this time, the operator needs to perform the releasing operation and the inserting operation at the same time, and thus the workability is deteriorated.
The present invention has been made to solve the above-mentioned problems occurring in the circuit breaker including the in-tray insertion interlock mechanism. Therefore, an object of the present invention is to automatically release the movement lock mechanism once when the drawn breaker main body is inserted into the inside of the switchboard. In this way, it is an object of the present invention to provide a circuit breaker including an in-tray insertion interlock mechanism, which can facilitate the insertion operation of a circuit breaker main body.
Technical scheme for solving technical problem
The circuit breaker of the present invention is characterized by comprising: a circuit breaker main circuit that performs switching operation; a circuit breaker main circuit carrying unit that carries a circuit breaker main circuit; a fixed-side locking member provided with an engaging hole; a front side unit to which a moving side locking member having a restoring force is mounted; and a distribution board that houses a circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit, wherein the front side unit or the fixed side locking member is mounted with a lock release member, the movable side locking member is located at an initial position when the circuit breaker main circuit carrying unit is placed at a first position, the movable side locking member moves toward a pull-in position in conjunction with the lock release member when the circuit breaker main circuit carrying unit moves from the first position toward a rear side, and the movable side locking member returns from the pull-in position to the initial position and engages with an engagement hole provided in the fixed side locking member when the circuit breaker main circuit carrying unit reaches a second position located further toward the rear side than the first position.
Effects of the invention
The circuit breaker of the invention is characterized by comprising: a circuit breaker main circuit that performs switching operation; a circuit breaker main circuit carrying unit that carries a circuit breaker main circuit; a fixed-side locking member provided with an engaging hole; a front side unit to which a moving side locking member having a restoring force is mounted; and a switchboard configured to house a circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit, wherein the front side unit or the fixed side locking member is mounted with a lock release member, the movable side locking member is located at an initial position when the circuit breaker main circuit carrying unit is placed at the first position, the movable side locking member moves toward the pull-in position in conjunction with the lock release member when the circuit breaker main circuit carrying unit moves from the first position toward the back side, and the movable side locking member returns from the pull-in position to the initial position and engages with an engagement hole provided in the fixed side locking member when the circuit breaker main circuit carrying unit reaches a second position located at the back side of the first position, so that the movable side locking member returns from the pull-in position to the initial position when the circuit breaker main circuit carrying unit reaches the second position.
The disk insertion interlocking mechanism of the front side unit is a structure that automatically releases the movement locking mechanism at the time of disk insertion and, after the automatic release of the movement locking mechanism, rapidly returns the lock to the disk outside pull-out. When the main circuit of the circuit breaker is inserted into the disk in a state that the door of the distribution board is closed, the movement locking mechanism is temporarily and automatically released, and the reduction of the disk operation force of the main circuit of the circuit breaker and the improvement of the operation performance when the disk is inserted can be realized.
Drawings
Fig. 1 is a side sectional view showing an internal structure of a circuit breaker including an in-tray insertion interlock mechanism according to an embodiment of the present invention.
Fig. 2 is a side sectional view showing a schematic structure of a circuit breaker unit according to an embodiment of the present invention.
Fig. 3 is a diagram for explaining the structure of the circuit breaker including the in-tray insertion interlock mechanism according to the embodiment of the present invention, and is an overall circuit diagram showing a case where the circuit breaker main circuit is located at a test position.
Fig. 4 is a diagram for explaining the structure of the circuit breaker including the in-tray insertion interlock mechanism according to the embodiment of the present invention, and is an overall circuit diagram showing a case where the circuit breaker main circuit is located at the connection position.
Fig. 5 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is a perspective view showing a state where the circuit breaker main circuit is located at a pulled-out position.
Fig. 6 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is a perspective view of the circuit breaker main circuit conveying unit as viewed from obliquely above from the front.
Fig. 7 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is a partially enlarged view of the front side unit.
Fig. 8 is a plan view (plan view) showing a circuit breaker main circuit conveying unit according to embodiment 1 of the present invention.
Fig. 9 is a front view showing a circuit breaker main circuit conveying unit according to embodiment 1 of the present invention.
Fig. 10 is a right side view showing a circuit breaker main circuit conveying unit according to embodiment 1 of the present invention.
Fig. 11 is an enlarged front view showing a unit operation handle of the circuit breaker main circuit carrier unit according to embodiment 1 of the present invention, showing the front side unit at the initial position.
Fig. 12 is an enlarged front view showing a unit operation handle of the circuit breaker main circuit carrying unit according to embodiment 1 of the present invention, showing the front side unit in the pull-in position.
Fig. 13 is a diagram for explaining the structure of the front side unit according to embodiment 1 of the present invention, and is an enlarged plan view (plan view) of the tapered member.
Fig. 14 is a diagram for explaining the structure of the front side unit according to embodiment 1 of the present invention, and is a right side view showing the structure of the unit operation handle and the tapered member.
Fig. 15 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is an enlarged side view showing a state where the circuit breaker main circuit is located at the pulled-out position.
Fig. 16 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is a perspective external view showing a state where the circuit breaker main circuit is located at a test position.
Fig. 17 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is an enlarged side view showing a state where the circuit breaker main circuit is located at a test position.
Fig. 18 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 1 of the present invention, and is a perspective external view showing a state where the circuit breaker main circuit is located at the connection position.
Fig. 19 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 2 of the present invention, and is a perspective external view showing a state where the circuit breaker main circuit is located at the pulled-out position.
Fig. 20 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 2 of the present invention, and is an enlarged perspective view showing a state where the circuit breaker main circuit is located at the pulled-out position.
Fig. 21 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 2 of the present invention, and is an enlarged side view showing a state where the circuit breaker main circuit is located at the pulled-out position.
Fig. 22 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 2 of the present invention, and is a perspective external view showing a state where the circuit breaker main circuit is located at a test position.
Fig. 23 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 2 of the present invention, and is an enlarged side view showing a state where the circuit breaker main circuit is located at a test position.
Fig. 24 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 3 of the present invention, and is a perspective external view showing a state where the circuit breaker main circuit is located at a pulled-out position.
Fig. 25 is a diagram for explaining the structure of the circuit breaker main circuit conveying unit according to embodiment 3 of the present invention, and is an enlarged perspective view showing a state where the circuit breaker main circuit is located at the pulled-out position.
Detailed Description
Hereinafter, a circuit breaker including an in-tray insertion interlock mechanism according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or similar components are denoted by the same reference numerals, and the dimensions and the scaling ratios of the corresponding components are independent of each other. For example, when the same structure portion is not changed between cross-sectional views in which a part of the structure is changed, the size and the scaling size of the same structure portion may be different. In addition, the circuit breaker including the in-tray insertion interlock mechanism actually includes a plurality of members, but for convenience of description, only portions necessary for description are described, and other portions are omitted.
Hereinafter, a circuit breaker including an in-tray insertion interlock mechanism according to an embodiment of the present invention will be described with reference to the drawings. The breaker main circuit carrying unit (in-tray insertion/out-tray drawing unit) of the breaker has an external operation mechanism capable of operating the position of the breaker main body in a state where the door of the distribution board is closed. Fig. 1 is a side sectional view showing the structure of a circuit breaker using the present invention including an in-tray insertion interlock mechanism. The circuit breaker 100 according to the embodiment of the present invention is generally arranged in a plurality of horizontal rows. The circuit breaker 100 is constituted by a circuit breaker unit 30, a switchboard 90, a horizontal bus bar 103, a cable 104, a current transformer 106, and the like, and includes an in-board insertion interlocking mechanism.
The breaker unit 30 is housed inside the distribution board 90. The distribution board 90 is composed of a distribution board main body 91 and a distribution board door 92. The distribution board door 92 of the distribution board 90 is provided on the front surface side of the distribution board main body 91 so as to be openable and closable. The switchboard door 92 is provided with door openings 92a at two locations. A horizontal bus bar 103 is disposed in a horizontal direction so as to penetrate between the plurality of switchboard main bodies 91 at a substantially central portion inside the switchboard main bodies 91. Here, the horizontal direction refers to the thickness direction of the paper surface in the drawing. The breaker unit 30 and the like are mounted inside the switchboard main body 91.
Two cables 104 are arranged behind the horizontal bus bar 103 so as to rise upward from the bottom surface of the switchboard main body 91. Further, two breaker units 30 are disposed in the vertical direction in front of the horizontal bus bar 103, and the breaker units 30 are fixed to the switchboard main body 91. One breaker main circuit 31 is disposed inside each breaker unit 30. The connection portion 105 is protected by an insulating cover and is mounted to a rear wall of the circuit breaker unit 30. The connection portion 105 is divided into two upper and lower sections, and a total of six connection portions 105 are provided in one breaker unit 30. The breaker main circuit conveying unit 20 and the front side unit 26 function as constituent units of an external operating mechanism. One end of the connection portion 105 is connected to the cable 104 via the horizontal bus bar 103 or the current transformer 106.
The breaker unit 30 has an external operation mechanism that can operate the position of the breaker main body. The other end of the connection portion 105 is separated from the terminal of the breaker main circuit 31 by moving in the front-rear direction of the breaker main circuit 31. The breaker unit 30 includes a breaker main circuit 31, a breaker main circuit conveyance unit 20 (in-tray insertion/out-tray drawing unit), and the like. The breaker main circuit 31 is mounted on the breaker main circuit conveyance unit 20 and can move appropriately in the front-rear direction of the distribution board main body 91 inside the breaker unit 30. In this figure, the breaker main circuit 31 is placed at a test position. The front side unit 26 is mounted on the front of the breaker main circuit carrier unit 20.
Fig. 2 is a schematic cross-sectional view showing a main structure of a breaker unit 30 for implementing an embodiment of the present invention. Each breaker main circuit 31 is mounted on the breaker main circuit carrying unit 20. The breaker unit 30 is fixed to the switchboard 90. Each breaker main circuit conveying unit 20 is provided with casters 21 and the like. The breaker main circuit 31 has a breaker handle 32 attached to a front surface thereof. The front side unit 26 is mounted with a unit operation lever 28, a unit operation handle 22, and the like.
When the unit operation lever 28 of the front side unit 26 is operated, the tip of the operation rod needs to be inserted through the door opening 92 a. When the unit operation lever 28 is operated from the outside of the distribution board 90 using the operation rod, the breaker main circuit 31 attached to the breaker main circuit conveyance unit 20 moves in the horizontal direction. When the breaker main circuit 31 is installed in the switchboard 90, the breaker main circuit 31 installed outside the switchboard enclosure in the breaker main circuit conveyance unit 20 is first installed in the compartment 30A of the breaker unit 30 with the switchboard door 92 opened. At this time, the breaker main circuit 31 is located at the pull-out position a (first position). Further, the breaker main circuit transporting unit 20 is placed at the pull-out position D (first position). The pulled-out position indicates a state in which the front surface portion of the breaker main circuit 31 is partially pulled out of the tray.
Next, the breaker main circuit 31 and the breaker main circuit conveyance unit 20 are moved to the test position B (second position) and the test position E (second position) by manually pressing the breaker handle 32 or the unit operation handle 22. When the unit operation lever 28 of the front side unit 26 is operated by the operation rod in a state where the switchboard door 92 is closed, the breaker main circuit conveying unit 20 including the caster 21 is mechanically moved in the horizontal direction, and the breaker main circuit 31 reaches the connection position C (third position). That is, the circuit breaker unit includes an external operating mechanism.
Fig. 3 is an overall circuit diagram illustrating a structure of a circuit breaker including an in-tray insertion interlock mechanism according to an embodiment of the present invention. The breaker main circuit 31 performing the switching operation is placed at a test position (second position). In this state, the breaker main circuit 31 is separated from the connection portion 105. In the breaker unit, the current flows in the direction of the arrow indicated by the breaker main circuit 31. The breaker main circuit 31 is also separated from the connection portion 105 at the test position. The power transmission circuit of electric power is generally a three-phase circuit (R phase, S phase, T phase). Therefore, the three bus bars (horizontal bus bars 103) are arranged in parallel. In a side cross-sectional view of the distribution board, each phase (R-phase, S-phase, T-phase) is connected to a lower terminal of the upper breaker main circuit and an upper terminal of the lower breaker main circuit.
The cable 104 is an insulated wire having a diameter of the order of centimeters (japanese: number センチメートル). The cable 104 is drawn into the switching device (breaker) from the bottom surface of the switching device upward. There are also ways to pull the cable 104 from the top surface into the switching device. The current transformer 106 (CT: CurrentTransformer) is attached to the bus bar, and detects the value of current (several hundreds to several thousands a) flowing through the bus bar. The good mark of the standing portion of the coil 104 indicates a connection portion of the bus bar and the pulled-in cable tip. The connection portion 105 is separable from the terminal of the breaker main circuit 31. The connection portion 105 and the good mark are each a bus bar made of copper having a rectangular cross section.
Fig. 4 is an overall circuit diagram illustrating a structure of a circuit breaker including an in-tray insertion interlock mechanism according to an embodiment of the present invention. The breaker main circuit 31 is placed at the connection position (third position). In this state, the breaker main circuit 31 is connected to the connection portion 105. The breaker main circuit 31 performing the switching operation changes from the open state to the closed state, and the current flows in the reverse direction to the two cables 104. The magnitude of the current is detected by the current transformer 106. A voltage of several thousand V is applied to the bus bar. The housing of the switching device and the partitions between the chambers inside the switching device are at ground potential. The bus bars are disposed so as to penetrate the current transformer 106 (CT). Since a voltage of several thousand V is applied to the bus bar, the bus bar is designed to ensure a predetermined insulation distance from the ground potential, that is, the case and the spacer of the switching device. The bus bar is disposed so as to penetrate the current transformer 106 (CT).
Fig. 5 is a perspective view showing main components of a breaker unit 30 according to embodiment 1 for carrying out the present invention. The breaker unit 30 is constituted by a compartment 30A (a back panel 35, a side panel 36, and the like), a breaker main circuit conveyance unit 20, a breaker main circuit 31, and the like. In this figure, the breaker main circuit 31 mounted on the breaker main circuit carrying unit 20 is placed at the pulled-out position (first position). In order to protect the core wire extending from the main circuit portion of the switching breaker, the breaker main circuit 31 is provided with an insulating cover 34. The front unit 26 is constituted by a front unit main body 26A, a unit operation handle 22, a unit operation lever 28, and the like. The in-tray insertion interlock mechanism 40 may also have been mounted to the circuit breaker main circuit carrier unit 20 at the pull-out position.
The intra-tray insertion interlock mechanism 40 is attached to the right and left of the breaker main circuit carrier unit 20. The unit operation handle 22 and the unit operation lever 28 are attached to the front side unit 26 (front side unit main body 26A). When the operator presses the breaker handle 32 (unit operation handle 22) in the rear direction (P direction), the breaker main circuit conveyance unit 20 and the breaker main circuit 31 move rearward (in the rear direction). When the operator pulls back the breaker handle 32 (unit operation handle 22) in the door side direction (Q direction), the breaker main circuit conveyance unit 20 and the breaker main circuit 31 move forward (front side).
Fig. 6 is a perspective view showing a moving mechanism (the breaker main circuit conveying unit 20 and the front side unit 26) of the breaker unit 30 according to embodiment 1 of the present invention. The front unit 26 is constituted by a front unit main body 26A, a unit operation handle 22, a moving side lock member 23, a taper member 24 (lock release member), a unit operation lever 28, and the like. The breaker main circuit carrying unit 20 is provided with a breaker main circuit 31 at a pull-out position. When the operator pushes down the unit operation lever 28 at the test position, the breaker main circuit carrying unit 20 equipped with the breaker main circuit 31 is separated from the front side unit 26 and mechanically moved to the connection position on the slide base 37 of the compartment 30A toward the P direction. When the operator operates the unit operation lever 28 again at the connection position, the breaker unit 30 is mechanically moved in the Q direction on the slide base 37 of the compartment 30A to return to the test position.
Fig. 7 is an enlarged perspective view showing main components of the intra-tray insertion interlock mechanism 40 in the circuit breaker main circuit carrier unit 20 according to embodiment 1 for carrying out the present invention. The disc insertion interlocking mechanism 40 is constituted by a fixed-side locking member 25, a moving-side locking member 23, a tapered member 24 (lock releasing member), and the like. Here, the breaker unit (the breaker main circuit carrying unit 20, the front side unit 26, and the breaker main circuit 31) is placed at the pull-out position. Here, the moving-side locking member 23 having the restoring force is located at the initial position.
The detailed structure of the disc insertion interlock mechanism 40 will be described with reference to this drawing. The fixed-side locking member 25 has a first engaging hole 25a and a second engaging hole 25 b. The first engaging hole 25a corresponds to the moving-side lock member 23. The second engaging hole 25b corresponds to the tapered member 24 having a tapered shape. In the pulled-out position, the moving-side locking member 23 and the tapered member 24 are placed outside (on the inlet side) the fixed-side locking member 25. The moving-side locking member 23 and the tapered member 24 are mounted to the front-side unit 26. The first engaging hole 25a is disposed on the front side of the switchboard with respect to the second engaging hole 25 b.
Fig. 8 is a plan view illustrating main operations of the circuit breaker main circuit conveying unit 20 according to embodiment 1 for carrying out the present invention. In this figure, the breaker main circuit carrying unit 20 (breaker main circuit 31) is placed at a test position. In this figure, the breaker main circuit carrying unit 20, the fixed-side locking member 25, the slide base 37 (bottom plate), the front-side unit 26, the breaker main circuit 31, and the like are shown. In order to ensure electrical safety, the operator operates the unit operation lever 28 from the outside of the switchboard door 92 (switchboard 90) using the operation rod 70.
When the operator operates the unit operation lever 28, the operation rod 70 is inserted into the inside of the switchboard main body 91 through the door opening 92a provided in the switchboard door 92. When the unit operation lever 28 is operated, the breaker main circuit carrying unit 20 is separated from the front-side unit 26 and slidably moves on the slide base 37. The breaker main circuit conveying unit 20 moves to the connection position of the breaker unit 30 in the direction of the back side of the switchboard (P direction, see fig. 5). The fixed-side locking members 25 are provided at two locations on the left and right of the circuit breaker main circuit carrier unit 20.
The front side unit 26 is mounted with a tapered member 24 having a tapered portion on the side opposite to the unit operation handle 28. The tapered member 24 moves in conjunction with the moving-side locking member 23 and the unit operation handle 22. When the operator moves the unit operation handle 22 in the center direction, the tapered member 24 also moves in the center direction, and therefore, the position lock of the intra-disc insertion interlocking mechanism 40 is released.
Fig. 9 is a front view showing a main structure of a breaker unit 30 according to embodiment 1 for carrying out the present invention. The breaker unit 30 is constituted by a breaker main circuit 31, a breaker main circuit conveyance unit 20, a front side unit 26, and the like. The unit operation lever 28, the unit operation handle 22, the moving-side lock member 23, the tapered member 24, and the like are attached to the front-side unit 26. The tapered member 24 is disposed on the back side of the moving-side lock member 23. The unit operation handle 22 of the front side unit 26 can be manually moved by the operator toward the center direction (arrow direction) of the front side unit 26 (breaker main circuit 31).
When the operator moves the unit operation handle 22 of the front side unit 26 in the center direction, the moving side locking member 23 (and the tapered member 24) of the front side unit 26 also moves toward the pull-in position while retracting in the center direction. When the moving-side locking member 23 is pulled in the center direction, the position lock of the intra-disc-insertion interlocking mechanism 40 is released. When the unit operation lever 28 is pushed down in the right direction at the test position, the breaker main circuit carrying unit 20 and the breaker main circuit 31 are separated from the front side unit 26 and enter in the inner side direction.
Fig. 10 is a side view showing main components of the breaker main circuit 31 and the breaker main circuit conveying unit 20 for carrying out embodiment 1 of the present invention. The breaker unit 30 includes a breaker main circuit conveyance unit 20, a slide base 37 (bottom plate), a front side unit 26, a breaker main circuit 31, and the like. The breaker main circuit carrying unit 20 is equipped with a breaker main circuit 31. When the operator operates the unit operation lever 28 when the breaker unit 30 is placed at the test position B, the breaker main circuit transporting unit 20 slides on the slide base 37 toward the connection position C.
Fig. 11 is a front view showing a main structure of a front side unit 26 for carrying out embodiment 1 of the present invention. This figure is an enlarged view showing the vicinity of the unit operation handle 22 according to embodiment 1 of the present invention. The unit operation handle 22, the moving-side locking member 23, and the tapered member 24, which show the front-side unit 26, are located at the initial positions. The cone member 24 is fixed to the back side of the front-side unit 26 by rivets 24 a. When the operator releases his hand from the retracted state (pulled-in position), the unit operation handle 22 is returned from the center direction toward the outer direction by the return spring 27. The movements of the unit operation handle 22, the moving-side locking member 23, and the tapered member 24 are linked.
Fig. 12 is a front view showing a main structure of a front side unit 26 for carrying out embodiment 1 of the present invention. This figure is an enlarged view showing the vicinity of the unit operation handle 22. The unit operation handle 22, the moving-side locking member 23, and the tapered member 24, which show the front-side unit 26, are retracted to the pull-in position. When the operator releases his hand from the retracted state, the unit operation handle 22 is returned from the pulled-in position (center direction) toward the initial position (outer direction) by the return spring 27. The movements of the unit operation handle 22, the moving-side locking member 23, and the tapered member 25 are linked.
Fig. 13 is an enlarged plan view showing the vicinity of the unit operation handle 22 according to embodiment 1 of the present invention. The form of the tapered member 24 for carrying out the embodiment of the present invention will be described in detail with reference to the drawings. The cone member 24 of the front side unit 26 is fixed to the front side unit main body 26A by a rivet 24 a. The tapered member 24 is tapered in such a manner that the width of the major side 24b decreases toward the inside of the front-side unit 26 (and the breaker main circuit carrier unit 20). The main side 24b of the tapered member 24 functions to release the moving-side lock member 23 attached to the front-side unit 26 from the locked position of the breaker main circuit carrier unit 20.
That is, when the breaker main circuit carrying unit 20 connected to the front side unit 26 moves from the drawn-out position (first position) toward the rear side of the distribution board and the tapered member 24 of the front side unit 26 comes into contact with the fixed side locking member 25, the moving side locking member 23 of the front side unit 26 moves toward the drawn-in position in the central direction of the front side unit 26 in an interlocking manner. In the present figure, the tapered member 24 is configured to be inclined in the center direction with respect to the insertion direction of the breaker main circuit, but the shape of the tapered member 24 is not limited to this. The moving-side locking member 23 and the tapered member 24 are formed of different parts, but the method of forming the taper is not limited.
Fig. 14 is an enlarged side view showing the vicinity of the unit operation handle 22 of the front side unit 26 in embodiment 1 of the invention. The form of the unit operation handle 22 for carrying out the embodiment of the present invention will be described in detail with reference to the drawings. The unit operation handle 22 and the taper member 24 are fixed to the front side unit body 26A by rivets 24 a. The major side 24b of the conical member 24 is tapered. The unit operation handle 22 is inclined in view of easy gripping.
Fig. 15 is an enlarged side view showing main components of the disc insertion interlock mechanism 40 according to the present embodiment. In this figure, the breaker main circuit conveying unit 20, the breaker main circuit 31, the moving-side locking member 23, the tapered member 24, the fixed-side locking member 25, the front-side unit 26, and the like are shown. In this figure, the breaker main circuit 31 is placed in the pulled-out position. The first engaging hole 25a and the second engaging hole 25b are respectively machined in the fixed-side lock member 25. The moving-side locking member 23 is located at the initial position.
The first engaging hole 25a is opened in a size corresponding to the moving-side lock member 23. The second engaging hole 25b is formed in a size and height corresponding to the tapered member 24. The caster 21 of the circuit breaker main circuit conveying unit 20 moves the main shaft while sliding on the inner upper side 25d of the fixed-side lock member 25 to prevent the circuit breaker main circuit 31 from flying out. When the breaker main circuit carrier unit 20 moves from the pulled-out position to the test position, the tapered member 24 receives a counterforce from the fixed-side locking member 25. By the above-described reaction force, the moving-side lock member 23 retracts toward the center of the front-side unit 26 and moves in a pulling-in manner.
Fig. 16 is a perspective view showing main components of a breaker unit 30 according to embodiment 1 for carrying out the present invention. In this figure, the circuit breaker main circuit carrying unit 20 and the circuit breaker main circuit 31 are shown in the test position. The fixed-side lock members 25 are attached to the left and right of the breaker main circuit carrier unit 20 so as to be orthogonal to the front-side unit 26. The fixed-side locking member 25 is fixed to the breaker unit 30 (compartment 30A). At the test position, since the moving-side lock member 23 is engaged with the fixed-side lock member 25, the movement of the front-side unit 26 and the breaker main circuit carrier unit 20 is restricted.
Fig. 17 is an enlarged side view showing main components of an in-disc-insertion interlocking mechanism 40 for implementing embodiment 1 of the present invention. In this figure, the breaker main circuit conveying unit 20, the breaker main circuit 31, the moving-side lock member 23, the fixed-side lock member 25, and the like are shown. In the figure, the breaker unit 30 (breaker main circuit 31) is placed at a test position. The first engaging hole 25a of the fixed-side lock member 25 engages with the moving-side lock member 23. The second engaging hole 25b of the fixed-side lock member 25 engages with the tapered member 24. Therefore, the position of the front side unit 26 is locked with respect to the fixed side locking member 25 without being able to travel further in the rearward direction. The moving-side locking member 23 is located at the initial position.
Fig. 18 is a perspective view showing main components of a breaker unit 30 for implementing the embodiment of the present invention. In this figure, a case where the breaker main circuit conveying unit 20 and the breaker main circuit 31 are located at the connection position is shown. At the connection position of the breaker unit 30, the first engagement hole 25a is engaged with the moving-side lock member 23. Similarly, at the connection position of the breaker unit 30, the second engagement hole 25b engages with the tapered member 24. Therefore, the position of the front side unit 26 is locked with respect to the fixed side locking member 25 without being able to travel further in the rearward direction. When the operator pushes down the unit operation handle 28 in the lateral direction from outside the panel, the breaker main circuit transport unit 20 and the breaker main circuit 31 are mechanically moved in the direction of the inner side of the switchboard, and the breaker unit 30 is placed at the connection position. The breaker main circuit 31 that has reached the connection position is in a state where the connection of the core wires is completed (see fig. 4).
As described above, the circuit breaker unit according to the present embodiment includes the external operation mechanism, and is capable of operating the position of the circuit breaker main circuit (circuit breaker main body) between the test position and the connection position in a state where the door of the distribution board is closed. The breaker main circuit carrying unit 20 is equipped with a breaker main circuit 31. The operator operates the breaker main circuit conveying unit 20 and the breaker main circuit 31 in the P direction and the Q direction with the door of the switchboard open to perform the in-tray insertion and the out-tray pull-out. At the time of the insertion operation, the operator holds the unit operation handle 22 and applies a force in the P direction in the drawing to perform the insertion operation of the breaker main circuit.
The present embodiment is characterized in that a lock release member (tapered member 24) for automatically releasing the position lock is coupled to the moving-side lock member 23. The tapered member 24 is fastened to the unit operation handle 22. The unit operation handle 22 is provided with a return spring 27 (return spring), and the unit operation handle 22 is automatically returned toward the outside of the circuit breaker. The operator holds the breaker handle 32 at the time of the insertion operation to perform the in-tray insertion.
During the insertion operation, the tapered member 24 of the front side unit 26 is moved in the center direction of the circuit breaker main circuit carrier unit 20 by engaging the tapered member 24 of the front side unit 26 with the second engagement hole 25b of the fixed side lock member 25. The moving-side lock member 23 also moves in the center direction of the circuit breaker main circuit carrier unit 20 in conjunction with the movement of the front-side unit 26 in the center direction of the tapered member 25, and therefore, automatic release of the moving lock mechanism can be achieved at the time of the insertion operation.
In the present embodiment, the tapered member 24 is provided in the breaker unit 30 along the breaker insertion direction of the movement-side locking member 23, so that the automatic release of the movement locking mechanism can be realized at the time of the insertion operation. Therefore, the operator does not need to release the moving-side lock member at the time of the insertion operation, and can hold the breaker handle 32 to perform the insertion operation of the breaker main circuit 31. The breaker handle 32 is disposed near the center of gravity of the breaker main circuit 31, and the force applied by the operator is only a force in the direction P in the figure, so that the operation force can be reduced.
That is, the circuit breaker according to the present embodiment includes: a circuit breaker main circuit that performs switching operation; a circuit breaker main circuit carrying unit that carries the circuit breaker main circuit; a fixed-side locking member provided with a first engaging hole and a second engaging hole; a front side unit to which a lock releasing member and a moving side locking member are mounted; and a distribution board for accommodating the circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit, the first engaging hole is disposed closer to the front side of the distribution board than the second engaging hole, when the main circuit breaker conveying unit connected with the front side unit moves from a first position to the inner side of the switchboard to make the unlocking component of the front side unit contact with the fixed side locking component, the moving-side locking member of the front-side unit is moved toward the center of the front-side unit in an interlocking manner, when the circuit breaker main circuit carrying unit reaches a second position on the inner side of the first position, the moving-side locking member and the lock releasing member are engaged with the first engaging hole and the second engaging hole, respectively, thereby, the movement of the circuit breaker main circuit conveying unit connected with the front side unit is locked.
Embodiment mode 2
A circuit breaker including an in-tray insertion interlock mechanism according to embodiment 2 of the present invention will be described below with reference to the drawings. Fig. 19 is a perspective view for explaining the disc inner insertion interlocking mechanism 40 according to embodiment 2 of the present invention. In the drawing, the breaker main circuit carrying unit 20 and the breaker main circuit 31 are placed at the pulled-out position. The disc inner insertion interlocking mechanism 40 of embodiment 2 is different in shape from the disc inner insertion interlocking mechanism of embodiment 1 in the moving-side locking member 23 and the fixed-side locking member 25.
Fig. 20 is a perspective view showing main components of an in-disc-insertion interlocking mechanism 40 for implementing embodiment 2 of the present invention. This figure is an enlarged view of the vicinity of the circuit breaker main circuit carrying unit 20 and the unit operating handle 22. In this figure, the breaker main circuit 31 is placed in the pulled-out position. The moving-side lock member 23 according to embodiment 2 is formed in a mountain shape, and is bent in the middle to include a tapered member 23a (lock release member or tapered surface). The fixed-side lock member 25 of embodiment 2 is provided with an engagement hole 25c only at one location at a position corresponding to the moving-side lock member 23.
Fig. 21 is a side view showing main components of an in-disc insertion interlocking mechanism 40 for implementing embodiment 2 of the present invention. In this figure, the breaker main circuit 31 is placed in the pulled-out position. The moving-side lock member 23 of embodiment 2 also moves in the center direction of the front-side unit 26 in conjunction with the unit operation handle 22. The fixed-side lock member 25 of embodiment 2 is provided with an engagement hole 25c only at one location at a position corresponding to the moving-side lock member 23. The tapered member 23a (tapered surface) of the moving-side lock member 23 has a tapered shape, and receives a counterforce from the fixed-side lock member 25 when the breaker main circuit carrier unit 20 moves from the pulled-out position to the test position.
Fig. 22 is a perspective view showing main components of a circuit breaker unit 30 according to embodiment 2 for carrying out the present invention. This figure shows a case where the breaker unit 30 (the breaker main circuit carrying unit 20 and the breaker main circuit 31) is located at a test position. The fixed-side lock members 25 are attached to the left and right of the breaker main circuit carrier unit 20 so as to be orthogonal to the front-side unit 26. The fixed-side lock member 25 of embodiment 2 is provided with an engagement hole 25c at a position corresponding to the moving-side lock member 23. At the test position of the breaker unit 30, the engagement hole 25c of the fixed-side lock member 25 is engaged with the moving-side lock member 23 of the front-side unit 26.
Fig. 23 is an enlarged side view showing main components of an in-disc-insertion interlocking mechanism 40 for implementing embodiment 2 of the present invention. This figure shows the circuit breaker main circuit conveying unit 20, the moving-side lock member 23, and the fixed-side lock member 25 in an enlarged manner. In this figure, the circuit breaker unit 30 is placed in a test position. The engagement hole 25c of the fixed-side lock member 25 engages with the moving-side lock member 23 of embodiment 2. Therefore, the position of the front side unit 26 is locked with respect to the fixed side locking member 25 without being able to travel further in the rearward direction.
As described above, the circuit breaker unit according to the present embodiment includes the external operation mechanism, and is capable of operating the position of the circuit breaker main circuit (circuit breaker main body) between the test position and the connection position in a state where the door of the distribution board is closed. The breaker main circuit carrying unit 20 is equipped with a breaker main circuit 31. The operator operates the breaker main circuit conveying unit 20 and the breaker main circuit 31 in the P direction and the Q direction with the door of the switchboard open to perform the in-tray insertion and the out-tray pull-out. At the time of the insertion operation, the operator holds the unit operation handle 22 and applies a force in the P direction in the drawing to perform the insertion operation of the breaker main circuit.
The present embodiment is characterized in that a lock release member (tapered member 23 a: tapered surface) for automatically releasing the position lock is disposed on the moving-side lock member 23. A moving-side locking member 23 having a tapered member 23a is fastened to the unit operation handle 22. The unit operation handle 22 is provided with a return spring 27 (return spring), and the unit operation handle 22 is automatically returned toward the outside of the circuit breaker. The operator holds the breaker handle 32 at the time of the insertion operation to perform the in-tray insertion.
During the insertion operation, the moving-side lock member 23 having the tapered surface is engaged with the engagement hole 25c of the fixed-side lock member 25, and the moving-side lock member 23 having the tapered surface is moved in the center direction of the breaker main circuit carrier unit 20. The moving-side lock member 23 also moves in the center direction of the circuit breaker main circuit carrier unit 20 in conjunction with the movement of the moving-side lock member 23 in the center direction of the tapered surface, and therefore, automatic release of the moving lock mechanism can be achieved at the time of the insertion operation.
In the present embodiment, the breaker unit 30 is provided with the tapered surface (tapered member 23a) along the breaker insertion direction of the moving-side lock member 23, so that the automatic release of the moving-side lock mechanism can be realized at the time of the insertion operation. Therefore, the operator does not need to release the moving-side lock member at the time of the insertion operation, and can hold the breaker handle 32 to perform the insertion operation of the breaker main circuit 31. The breaker handle 32 is disposed near the center of gravity of the breaker main circuit 31, and the force applied by the operator is only a force in the direction P in the figure, so that the operation force can be reduced.
That is, the circuit breaker according to the present embodiment includes: a circuit breaker main circuit that performs switching operation; a circuit breaker main circuit carrying unit that carries the circuit breaker main circuit; a fixed-side locking member provided with an engaging hole; a front side unit to which a moving side locking member having a lock releasing member is mounted; and a switchboard configured to accommodate the circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit, wherein when the circuit breaker main circuit carrying unit connected to the front side unit moves from a first position to a rear side of the switchboard and the lock release member provided in the movable side lock member comes into contact with the fixed side lock member, the movable side lock member of the front side unit moves toward a center of the front side unit in an interlocking manner, and when the circuit breaker main circuit carrying unit reaches a second position located on a rear side of the first position, the lock release member of the movable side lock member engages with the engagement hole, thereby locking the movement of the circuit breaker main circuit carrying unit connected to the front side unit.
A circuit breaker including an in-tray insertion interlock mechanism according to embodiment 3 of the present invention will be described below with reference to the drawings. Fig. 24 is a perspective view for explaining an in-disc insertion interlock mechanism 40 according to embodiment 3 of the present invention. In the drawing, the breaker main circuit carrying unit 20 and the breaker main circuit 31 are placed at the pulled-out position. The disc inner insertion interlocking mechanism 40 according to embodiment 3 is different in shape of the fixing-side locking member 25 from that according to embodiment 1.
Fig. 25 is a perspective view showing main components of an in-disc-insertion interlocking mechanism 40 for implementing embodiment 3 of the present invention. Further, this figure is an enlarged view of the vicinity of the circuit breaker main circuit carrying unit 20 and the unit operation handle 22. In this figure, the breaker main circuit 31 is placed in the pulled-out position. The moving-side lock member 23 according to embodiment 3 protrudes outward (in the direction opposite to the center direction) from the front-side unit 26, as in embodiment 1. The fixed-side locking member 25 of embodiment 3 is provided with an engaging hole 25e and a fixed-side tapered member 25f (lock releasing member) at a position corresponding to the moving-side locking member 23. The fixed-side tapered member 25f has a tapered shape, and is provided on the inlet side of the fixed-side locking member 25.
The present embodiment is characterized in that a fixed-side tapered member 25f that exerts a counterforce on the moving-side lock member 23 is provided on the disk side for automatic release of the position lock. In the figure, the fixed-side tapered member 25f is configured to be inclined outward with respect to the breaker insertion direction, but the tapered shape is not limited. The operator holds the breaker handle 32 at the time of the insertion operation to perform the in-tray insertion. At the time of the insertion operation, the moving-side locking member 23 receives a counterforce from the fixed-side tapered member 25f, and the moving-side locking member 23 is moved toward the center direction of the breaker main circuit conveying unit 20. Finally, the moving-side lock member 23 is inserted into the engagement hole 25e, and therefore, automatic release of the movement lock mechanism can be achieved at the time of the insertion operation.
A pair of engagement portions of the moving-side lock member 23 that engage with the breaker case are provided on both sides as viewed from the front side of the tray, and the unit operation handle 22 is provided so as to be capable of driving and operating each engagement portion in the width direction of the tray. The unit operation handle 22 is provided in a state of being inclined obliquely upward toward the front of the disk. In the case where the operator who operates the front surface of the circuit breaker operates the moving-side lock member 23 in a state of being directed obliquely downward by setting the unit operation handle 22 in a state of being directed toward the front of the tray and being inclined obliquely upward, the operation can be made easier than in the case where the unit operation handle 22 is directed toward the upper side (vertical) or the front side (horizontal) of the tray.
As described above, the circuit breaker unit according to the present embodiment includes the external operation mechanism, and is capable of operating the position of the circuit breaker main circuit (circuit breaker main body) between the test position and the connection position in a state where the door of the distribution board is closed. The breaker main circuit carrying unit 20 is equipped with a breaker main circuit 31. The operator operates the breaker main circuit conveying unit 20 and the breaker main circuit 31 in the P direction and the Q direction with the door of the switchboard open to perform the in-tray insertion and the out-tray pull-out. At the time of the insertion operation, the operator holds the unit operation handle 22 and applies a force in the P direction in the drawing to perform the insertion operation of the breaker main circuit.
A feature of the present embodiment is that a lock release member (fixed-side tapered member 25f) for automatically releasing the position lock is disposed on the fixed-side lock member 25. The fixed-side tapered member 25f is integrated with the fixed-side locking member 25. The unit operation handle 22 is provided with a return spring 27 (return spring), and the unit operation handle 22 is automatically returned toward the outside of the circuit breaker. The operator holds the breaker handle 32 at the time of the insertion operation to perform the in-tray insertion.
At the time of the insertion operation, the moving-side locking member 23 of the front-side unit 26 comes into contact with the fixed-side tapered member 25f of the fixed-side locking member 25, and the moving-side locking member 23 of the front-side unit 26 is drawn in and moved in the central direction of the circuit breaker main circuit carrier unit 20, so that the automatic release of the moving locking mechanism can be realized at the time of the insertion operation. The unit operation handle 22 also moves in the center direction of the circuit breaker main circuit carrier unit 20 in conjunction with the movement of the movement-side lock member 23 of the front-side unit 26 in the center direction, and therefore, automatic release of the movement lock mechanism can be achieved at the time of the insertion operation.
In the present embodiment, the fixed-side tapered member 25f is provided on the inlet side of the fixed-side lock member 25 in the breaker unit 30, so that the automatic release of the moving-side lock mechanism can be achieved at the time of the insertion operation. Therefore, the operator does not need to release the moving-side lock member at the time of the insertion operation, and can hold the breaker handle 32 to perform the insertion operation of the breaker main circuit 31. The breaker handle 32 is disposed near the center of gravity of the breaker main circuit 31, and the force applied by the operator is only a force in the direction P in the figure, so that the operation force can be reduced.
That is, the circuit breaker according to the present embodiment includes: a circuit breaker main circuit that performs switching operation; a circuit breaker main circuit carrying unit that carries the circuit breaker main circuit; a fixed-side locking member provided with an engaging hole; a front side unit to which a moving side locking member is mounted; and a distribution board that houses a circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit, wherein the fixed-side lock member is mounted with a lock release member, and when the circuit breaker main circuit carrying unit connected to the front-side unit moves from a first position toward a rear side of the distribution board and the movable-side lock member of the front-side unit comes into contact with the lock release member of the fixed-side lock member, the movable-side lock member of the front-side unit moves toward a center of the front-side unit in an interlocking manner, and when the circuit breaker main circuit carrying unit reaches a second position that is further toward the rear side than the first position, the movable-side lock member engages with the engagement hole, thereby locking movement of the circuit breaker main circuit carrying unit connected to the front-side unit.
In addition, within the scope of the present invention, the embodiments of the present invention may be freely combined, or may be appropriately modified or omitted.
Description of the symbols
20 a circuit breaker main circuit carrying unit; 21 a caster wheel; 22 unit operating handle; 23 moving the side locking member; 24a conical member; 24a rivets; 24b a major edge; 25 fixing the side locking member; 25a first engaging hole; 25b second engaging holes; 25c, a clamping hole; 25d inner upper edge; 25e, a clamping hole; 25f fixing the side cone member; 26a front-side unit; 27 a return spring; 28 unit operating handle; 30a circuit breaker unit; 31 a circuit breaker main circuit; 32 a circuit breaker handle; 34 an insulating cover; 35 a back plate; 36 side plates; 37 a slide base; 40 disc insert interlock mechanism; 70 operating the rod; 90 switchboard; 91 a main body of the panel; 92 panel door; 92a door opening; 100 circuit breakers; 103 horizontal bus bars; 104 a cable; 105 a connecting part; 106 current transformer.
Claims (10)
1. A circuit breaker, comprising:
a circuit breaker main circuit that performs switching operation;
a circuit breaker main circuit carrying unit that carries the circuit breaker main circuit;
a fixed-side locking member provided with an engaging hole;
a front side unit to which a moving side locking member having a restoring force is mounted; and
a distribution board that houses the breaker main circuit mounted on the breaker main circuit carrying unit,
the front side unit is mounted with a lock releasing member,
the lock releasing member is disposed further to the inner side than the moving-side locking member,
the moving-side locking member is located at an initial position with the circuit breaker main circuit carrying unit placed at a pulled-out position,
when the circuit breaker main circuit carrying unit moves from the drawn-out position toward the back side, the moving-side locking member moves toward the drawn-in position in conjunction with the lock releasing member,
when the circuit breaker main circuit carrying unit reaches a test position on the inner side of the drawn-out position, the movable side locking member returns from the drawn-in position to an initial position, and engages with an engagement hole provided in the fixed side locking member.
2. The circuit breaker of claim 1,
the fixed side locking member is provided with a clamping hole which is clamped with the locking releasing member.
3. The circuit breaker of claim 1,
the lock releasing member is attached to a moving-side locking member of the front-side unit.
4. A circuit breaker, comprising:
a circuit breaker main circuit that performs switching operation;
a circuit breaker main circuit carrying unit that carries the circuit breaker main circuit;
a fixed-side locking member provided with an engaging hole;
a front side unit to which a moving side locking member having a restoring force is mounted; and
a distribution board that houses the breaker main circuit mounted on the breaker main circuit carrying unit,
a lock releasing member is installed at an inlet side of the fixed-side locking member,
the moving-side locking member is located at an initial position with the circuit breaker main circuit carrying unit placed at a pulled-out position,
when the circuit breaker main circuit carrying unit moves from the drawn-out position toward the back side, the moving-side locking member moves toward the drawn-in position in conjunction with the lock releasing member,
when the circuit breaker main circuit carrying unit reaches a test position on the inner side of the drawn-out position, the movable side locking member returns from the drawn-in position to an initial position, and engages with an engagement hole provided in the fixed side locking member.
5. The circuit breaker according to any of claims 1 to 4,
the front side unit is mounted with a unit operation lever.
6. The circuit breaker of claim 5,
when the unit operation lever is moved at the test position, the coupled front-side unit is separated from the breaker main circuit carrying unit,
the circuit breaker main circuit mounted on the circuit breaker main circuit carrying unit further moves to a connection position toward the inner side.
7. The circuit breaker according to any of claims 1 to 4,
the front side unit is mounted with an inclined unit operating handle.
8. The circuit breaker of claim 7,
the unit operation handle and the moving-side locking member move in linkage.
9. The circuit breaker of claim 7,
the unit operation handle and the moving-side locking member have restoring forces.
10. The circuit breaker according to any of claims 1 to 4,
the electrical panel has a door provided with an opening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/003373 WO2018142454A1 (en) | 2017-01-31 | 2017-01-31 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110235324A CN110235324A (en) | 2019-09-13 |
| CN110235324B true CN110235324B (en) | 2020-08-14 |
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ID=59969470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780084654.9A Active CN110235324B (en) | 2017-01-31 | 2017-01-31 | Circuit breaker |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP6203462B1 (en) |
| KR (1) | KR102164332B1 (en) |
| CN (1) | CN110235324B (en) |
| DE (1) | DE112017006962T5 (en) |
| TW (1) | TWI620385B (en) |
| WO (1) | WO2018142454A1 (en) |
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- 2017-01-31 DE DE112017006962.9T patent/DE112017006962T5/en active Pending
- 2017-01-31 WO PCT/JP2017/003373 patent/WO2018142454A1/en active Application Filing
- 2017-01-31 KR KR1020197021742A patent/KR102164332B1/en active IP Right Grant
- 2017-01-31 CN CN201780084654.9A patent/CN110235324B/en active Active
- 2017-01-31 JP JP2017533658A patent/JP6203462B1/en active Active
- 2017-03-23 TW TW106109712A patent/TWI620385B/en active
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| JPH0742529U (en) * | 1993-12-28 | 1995-08-04 | 中立電機株式会社 | Locking device for drawer type circuit breaker |
| CN1213205A (en) * | 1997-09-29 | 1999-04-07 | 三菱电机株式会社 | Enclosed switch board and its drawable switch and interlocking device thereof |
| CN1787306A (en) * | 2004-12-10 | 2006-06-14 | 上海电器科学研究所（集团）有限公司 | Position locking device for breaker |
| JP2009011070A (en) * | 2007-06-27 | 2009-01-15 | Fuji Electric Systems Co Ltd | Interlock device |
| CN201805172U (en) * | 2010-09-11 | 2011-04-20 | 新疆奎开电气有限公司 | Interlocking mechanism for drawer of low-voltage draw-out-type switchgear assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102164332B1 (en) | 2020-10-12 |
| TWI620385B (en) | 2018-04-01 |
| KR20190095469A (en) | 2019-08-14 |
| TW201830814A (en) | 2018-08-16 |
| JP6203462B1 (en) | 2017-09-27 |
| JPWO2018142454A1 (en) | 2019-02-14 |
| WO2018142454A1 (en) | 2018-08-09 |
| CN110235324A (en) | 2019-09-13 |
| DE112017006962T5 (en) | 2019-10-31 |
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