JP2005261044A - Shutter mechanism of switchboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the shutter mechanism of a switchboard in which the size of the switchboard and circuit breakers is reduced in the width direction and the number of components is decreased. <P>SOLUTION: In the shutter mechanism 10 of a switchboard 1, a disconnecting part 8 is fixed to a plurality of supporting members 3 supported on the floor 2, a shutter 11 for switching the disconnecting part 8 is arranged on one side thereof, and an operating lever 12 for switching the disconnecting part 8 by elevating/lowering the shutter 11 is fixed directly to the shutter 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a shutter mechanism of a switchboard that opens and closes a disconnection portion by rotating an operation lever as the electric device moves an operation lever.

  When a circuit breaker is inserted into a switchboard to electrically connect or disconnect an electrical device such as a circuit breaker to a disconnection section in a conventional switchboard, the shutter is lowered, and the connection of the circuit breaker is electrically connected to the exposed disconnection section. Connect to. Further, when the circuit breaker is moved from the inside of the switchboard to the outside, the shutter is raised and the disconnection portion is closed, so that safety is ensured so that an operator cannot touch the disconnection portion within the switchboard. The shutter mechanism for raising and lowering the shutter in this way will be described with reference to Patent Document 1.

  That is, support members are arranged on the left and right sides of the inner surface of the switchboard, and insulating members are attached between the support members. A three-phase disconnecting portion is attached to the insulating member. The three-phase disconnection section includes a power supply-side disconnection section and a load-side disconnection section, and the power supply-side disconnection section and the load-side disconnection section are arranged at predetermined intervals on the upper side and the lower side. A shutter is disposed in one side switchboard of these disconnections.

  The shutter is disposed on the left and right inner surfaces of the switchboard and is supported by a rod extending upward. The lower part of the rod is connected to the operating lever. An elastic member such as a spring is disposed at the shutter side end of the operation lever, and the opposite end is supported by the main shaft. Therefore, the operation lever is inclined by the spring so that the shutter side end is always at a higher position than the opposite end with the main shaft as a fulcrum. A pressing pin is provided on one side surface of the circuit breaker.

  When the circuit breaker is inserted into the switchboard in this state, the pressing pin moves in the switchboard while pressing the operation lever. In response to this movement, the operating lever rotates about the main shaft, compresses the spring and accumulates the rising energy, and the shutter descends sequentially to expose the disconnection, and the breaker is exposed to the exposed disconnection. Connect the connection part electrically. The load side disconnection part is energized from the power supply side disconnection part through the connection part of the circuit breaker.

When the circuit breaker is pulled out of the switchboard, as the circuit breaker moves to the outside, the pressing force with which the pressing pin presses the operating lever is gradually weakened, and the rising energy is released, and the shutter is raised by this releasing force. The shutter closes the disconnecting portion.
JP-A-53-74255

  However, in the above-described shutter mechanism, the operation lever provided on the inner surface of the switchboard is pressed by the pressing pin, so that the width direction of the switchboard and the circuit breaker increases in order to raise and lower the shutter, and the number of parts increases. There are disadvantages.

  The objective of this invention is providing the shutter mechanism of the switchboard which reduced the width direction of the switchboard and the circuit breaker, and reduced the number of parts.

  In order to solve the above-mentioned problem, the first of the present invention is to attach a disconnection part in the switchboard, arrange a shutter for opening and closing the disconnection part on one side of the disconnection part, and open and close the disconnection part by raising and lowering the shutter. In the shutter mechanism of the switchboard provided with the operating lever to be operated, the operating lever is directly attached to the shutter.

  According to a second aspect of the present invention, there is provided a switchboard having a disconnecting portion mounted in the switchboard, a shutter for opening and closing the disconnecting portion disposed on one side of the disconnecting portion, and an operating lever for moving the shutter up and down to open and close the disconnecting portion. In the shutter mechanism, the operation lever and the shutter are mounted on opposing surfaces facing each other.

  In the third aspect of the present invention, a disconnecting portion covered with an insulating layer is attached to the distribution board, a shutter for opening and closing the disconnecting portion is disposed on one side of the disconnecting portion, and the shutter is moved up and down to open and close the disconnecting portion. In the shutter mechanism of the switchboard equipped with a lever, the operating lever is attached to the shutter, and a guide path for guiding the raising and lowering of the shutter is provided at the end of the insulating layer.

  According to a fourth aspect of the present invention, there is provided a switchboard having a disconnecting portion mounted in the switchboard, a shutter for opening and closing the disconnecting portion disposed on one side of the disconnecting portion, and an operating lever for moving the shutter up and down to open and close the disconnecting portion. In the shutter mechanism, the operation lever is attached to the shutter, and the electric device presses the operation lever to raise and lower the shutter, and the width portion of the operation lever is set to be equal to or smaller than the width portion of the electric device. It is characterized by this.

  According to the fifth aspect of the present invention, as the electric device moves on the operation lever, the shutter is lowered by the pressing force of the operation lever to expose the disconnection portion, and the rising energy is accumulated by the elastic member so that the electric device operates. The release energy is released in response to releasing the pressing force of the lever, the shutter is raised, and the disconnecting portion is closed.

  According to the present invention, the operation lever may be directly attached to the shutter, so that not only the number of parts can be reduced, but also the operation lever is supported opposite to the shutter or disconnection portion. The width direction can be reduced.

  Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic partial sectional view in the vicinity of a shutter mechanism of a switchboard which is an embodiment of the present invention. FIG. 2 is a diagram of the insulating case taken along line YY of FIG. FIG. 3 is a perspective view of the shutter mechanism used in FIG.

  1 to 3, the switchboard 1 is made of a steel plate member, and the switchboard 1 is made up of a floor surface 2 and a support plate 3 attached to and supported by the floor surface 2. The support plate 3 extends upward from the floor surface 2 and has case insertion holes 4 at predetermined intervals on the upper side and the lower side.

  An insulating case 5 made of an insulating member is attached to the case insertion hole 4. The insulating case 5 is fixed to the support plate 3 by mounting means 7 provided between the mounting seat 6 of the insulating case 5 and the support plate 3, for example, bolts and nuts. Three-phase disconnecting portions 8A and 8B are attached in the insulating case 5. As shown in FIG. 2, a shutter mechanism 10 is disposed on the side of the opening 8C of the three-phase disconnecting sections 8A and 8B, and a guide path 5A made of a groove is formed at the end of the insulating case 5.

  The shutter mechanism 10 is configured as follows. The shutter 11 is formed of an insulating member such as a synthetic resin. The shutter 11 is disposed along the lower and upper disconnecting portions 8A and 8B. In this embodiment, the position of the shutter 11 is set to the A position and the B position in order to explain the operation described later. However, the actual position of the shutter 11 is the B position.

  The shutter 11 has three shutter through holes 11A facing the lower disconnecting portion 8A. The lower connection portion 16B of the circuit breaker 16 is inserted into the shutter through hole 11A. A mounting hole 11 </ b> B is formed in the lower part of the shutter 11. Insert the protrusion 12A of the operation lever 12 into the mounting hole 11B and twist a part of the protrusion 12A protruding to the outside of the shutter, or insert an attachment pin (not shown), and connect the operation lever 12 to the shutter 11. Install directly.

  The operation lever 12 uses a steel plate member, and a bending inclined surface 12X1 and a horizontal surface 12X2 are formed by a mechanical press in the middle as shown in FIGS. The operation lever end on the shutter 11 side is connected to the shutter, and a spring 13 is disposed between the operation lever 12 and the floor surface 2. The spring 13 is not limited to this position. For example, it may be arranged above the shutter. When a spring is disposed on the upper side of the shutter, the spring end is attached to the ceiling surface, and the spring is pulled to accumulate energy when the shutter is lowered.

  The left and right main shafts 14 protruding outward from the end of the operating lever are supported by a fixing bracket 15 corresponding to a bearing portion. The main shaft 14 may be inserted into left and right bearings (not shown) provided on the side surface of the floor. Therefore, the operation lever 12 can be rotated from the Y1 position to the Y2 position or from the Y2 position to the Y1 position with the fixing bracket 15 as a fulcrum. Further, the operating lever tip 12B on the shutter side is exposed to the outside from the support plate 3. In this portion of the support plate 12, a hole 3 </ b> A that penetrates the distal end portion 12 </ b> B is formed. However, when the distal end portion 12 </ b> B is not exposed to the outside from the support plate 3, it is not necessary to form a hole.

  Next, the operation of the shutter mechanism 10 will be described.

  When the circuit breaker 16, for example, the vacuum circuit breaker moves in the arrow direction X <b> 1, the facing surface 16 </ b> A of the circuit breaker 16 advances in the arrow direction X <b> 1 while pressing the operation lever 12. The operating lever 12 presses the spring 13 while rotating counterclockwise with the fixing bracket 15 as a fulcrum. During this time, the spring 13 is compressed and accumulates compression energy, that is, rising energy, and the operating lever 12 rotates from the Y1 position to the Y2 position, and accordingly the shutter 11 is lowered. When the shutter 11 is in the B position, the load side disconnection portion 8A and the power supply side disconnection portion 8B are opened. The connection part 16B of the circuit breaker 16 is connected to the exposed load side disconnection part 8A and the power supply side disconnection part 8B.

  If it does so, it will supply with electricity to the load side disconnection part 8A via the circuit breaker 16 from the power supply side disconnection part 8B. The circuit breaker 16 has a pair of electrodes 16C and 16D. For example, when the one side electrode 16D is brought into contact with or separated from the other side electrode 16C, the electrodes are electrically opened and closed.

  On the other hand, if the circuit breaker 16 is moved in the opposite direction X2 as opposed to the above, the rising energy that is compressed and stored in the operating lever 12 is released sequentially, so that the releasing lever moves the operating lever 12 from the Y2 position. It rotates clockwise through the main shaft 14 to the Y1 position. For this reason, the shutter 11 rises like the B position, and closes the load side disconnection part 8A and the power supply side disconnection part 8B.

  Thus, according to the first aspect of the present invention, if the operation lever 12 is rotated, the shutter 11 is lowered accordingly, so that the number of parts can be reduced in the configuration of the shutter operating mechanism 10 compared to the prior art. . For example, the pressing pins, rods, etc. described in the prior art can be omitted, so that the number of parts can be reduced accordingly. As a result, assembly time, component adjustment time, and the like can be shortened.

  Since the operation lever 12 is directly attached to the shutter 11, the operation lever and the pressing pin are not arranged on the left and right side surfaces of the switchboard as described in the prior art. The width part of can be reduced.

  According to the second aspect of the present invention, the projection 12A of the operating lever 12 is inserted into the mounting hole 11B of the shutter 11 and the projection 12A protruding outside the shutter is twisted or the mounting pin is inserted, The operation lever 12 can be connected and fixed. In this case, since the operation lever 12 and the shutter 11 can be inserted on the surfaces facing each other, the insertion operation can be performed while looking at the insertion point, so that both can be easily attached. Therefore, the installation work efficiency is good.

  According to the third aspect of the present invention, since the shutter 11 is accommodated in the guide path 5A at the end of the insulating case 5, the shutter 11 can be smoothly moved up and down by the guide path 5A, and the shutter 11 is damaged. The life of the shutter 11 can be improved by the amount provided for the guide path 5A.

  According to the fourth aspect of the present invention, the width portion W1 of the shutter 11 and the operation lever 12 is set to be the same as or smaller than the width portion W2 of the opposing surface 16A of the circuit breaker. In this embodiment, the width W1 of the shutter 11 is set to be the same as the width W2 of the facing surface 16A of the circuit breaker 16, and the width W1 of the operating lever 12 is set smaller than the width W2 of the facing surface 16A of the circuit breaker 16. Has been. Therefore, the width part of the switchboard 1 and the circuit breaker 16 of the present invention can be reduced as compared with the case where the operation lever and the pressing pin are arranged on the left and right side surfaces of the switchboard as described in the prior art.

  In addition, although the breaker of the above-mentioned embodiment was explained taking the vacuum breaker as an example, it is used for the draw-out type electric equipment that goes in and out of the switchboard such as other oil-filled breakers, magnetic breakers, load switches, disconnectors, etc. can do.

  As described above, according to the shutter mechanism of the switchboard of the present invention, the width direction of the switchboard and the electrical equipment can be reduced, and the number of parts can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic partial cross-sectional view in the vicinity of a shutter mechanism of a switchboard that is Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of an insulating case taken along line YY in FIG. 1. The perspective view of the shutter mechanism used for FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Distribution board, 2 ... Floor surface, 3 ... Support plate, 3A ... Hole, 4 ... Case insertion hole, 5 ... Insulation case, 5A ... Guide way, 6 ... Mounting seat, 7 ... Mounting means, 8A ... Lower disconnection part 8B ... Upper disconnection part, 8C ... Opening port, 10 ... Shutter mechanism, 11 ... Shutter, 11A ... Shutter through hole, 11B ... Mounting hole, 12 ... Operating lever, 12A ... Protrusion, 12B ... Tip, 13 ... Spring , 14 ... main shaft, 15 ... fixing bracket, 16 ... circuit breaker, 16A ... circuit breaker facing surface, 16B ... connection part, 16C, 16D ... electrode, W1, W2 ... width part.

Claims (5)

  In the shutter mechanism of a switchboard comprising a disconnecting portion mounted in the switchboard, a shutter for opening and closing the disconnecting portion disposed on one side of the disconnecting portion, and an operating lever for raising and lowering the shutter to open and close the disconnecting portion. A shutter mechanism for a switchboard, wherein the shutter is directly attached to the shutter.   In the shutter mechanism of a switchboard comprising a disconnecting portion mounted in the switchboard, a shutter for opening and closing the disconnecting portion disposed on one side of the disconnecting portion, and an operating lever for raising and lowering the shutter to open and close the disconnecting portion. And a shutter mounted on opposing surfaces facing each other.   A switchboard shutter provided with a disconnecting portion covered with an insulating layer in the switchboard, a shutter for opening and closing the disconnection portion disposed on one side of the disconnection portion, and an operating lever for raising and lowering the shutter to open and close the disconnection portion In the mechanism, the operating lever is attached to the shutter, and a guide path for guiding the raising and lowering of the shutter is provided at an end of the insulating layer.   In the shutter mechanism of the switchboard, the operating lever is provided with a disconnecting portion mounted in the switchboard, a shutter for opening and closing the disconnecting portion disposed on one side of the disconnecting portion, and an operating lever for raising and lowering the shutter to open and close the disconnecting portion. The electrical device presses the operating lever to raise and lower the shutter, and the width of the operating lever is set to be equal to or less than the width of the electrical device. Shutter mechanism.   As the electric device moves on the operating lever, the shutter is lowered by the pressing force of the operating lever to expose the disconnection portion, and the rising energy is accumulated by the elastic member, and the electric device releases the pressing force of the operating lever. The shutter mechanism of the switchboard according to any one of claims 1 to 4, wherein the rising energy is released in accordance with the above, the shutter is lifted, and the disconnecting portion is closed.

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