JP2015081494A - Switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing device that has higher maintainability of a control part etc.SOLUTION: An opening/closing machine 34 has its driving shaft side arranged nearby one end part of a take-up body 32 and its counter-driving shaft side fixed to face the other end of the take-up body 32, and an under surface of a storage part 30 is provided with an inspection opening 30a and a closing member 30b closing the inspection opening 30a in an openable state. A control part 36 has a work surface 36a to be operated, at least having a signal line connection part for control, fixed to an upper part and a lower part of the opening/closing machine 34 to face the counter-driving shaft side. In the storage part 30, a work space S for operation on the surface 36a to be operated is secured more on the counter-driving shaft side than the surface 36a to be operated of the control part 36, and the inspection opening 30a is opened within a range including the opening/closing machine 34 and work space S.

Description

  The present invention relates to an opening / closing device such as a shutter device or an overhead door, and more particularly to an opening / closing device that controls an opening / closing device that is a power source to open and close an opening / closing body.

Conventionally, in this type of invention, as in the invention described in Patent Document 1, for example, an open / close body (shutter curtain 2) that opens and closes in the vertical direction, and the open / close body is wound up or drawn out upward. Opening and closing provided with a winding body (winding drum 4), a switch (electric motor 7) which is a drive source for rotating the winding body, and a control unit (main control unit 10) for controlling the switch There is a device.
According to this prior art, since the control unit (main control unit 10) is arranged above the switch (electric motor 7), the switch and the control unit can be handled integrally. Sometimes convenient for maintenance and maintenance.

  However, in the prior art, since the control unit is arranged so as to be hidden on the upper side of the switch, when performing maintenance from an inspection port or the like without removing the control unit, the maintenance work may be difficult. is there. More specifically, the control unit may be provided with a connector for connecting various sensors, a switch for switching the control contents, a display unit for displaying the control state, etc. Work and operation may become difficult.

JP 2008-144448 A

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is to provide a switchgear having improved maintainability for a control unit or the like.

  One means for solving the above problems includes an opening / closing body that opens and closes in the vertical direction, a storage section that stores and sends the opening / closing body in an upper side thereof, and winds the opening / closing body in the storage section. An opening / closing device including a winding body that is driven and extended, an opening / closing device that drives and rotates the winding body, and a control unit that controls the opening / closing device. It is arranged in the vicinity of one end of the holder, and the non-drive shaft side is fixed toward the other end of the winding body, and an inspection port and the inspection port can be opened on the lower surface of the storage unit. A closing member for closing, and the control unit is fixed to the upper or lower part of the switch with the work surface having at least a signal line connection part for control facing the non-drive shaft side, In the storage unit, the work surface is on the side opposite to the drive shaft than the work surface of the control unit. Working space for working to is secured, the access door is characterized by being open to a range including the opener and the working space.

  Since the present invention is configured as described above, it is possible to improve maintainability for the control unit and the like.

It is a front view which shows an example of the switchgear concerning this invention. It is a principal part front view which shows an example of the attachment structure of an opening / closing machine and a control part, and illustration of the winding body is abbreviate | omitted. It is a side view which shows the attachment structure. It is a perspective view which shows an example of a control part. It is a figure which shows the to-be-worked surface of the control part. It is a perspective view which shows an example of a control part mounting bracket. It is a perspective view which shows an example of a circuit breaker support bracket. It is a top view which shows the circuit breaker support bracket.

The first feature of the present embodiment is that an opening / closing body that opens and closes in the vertical direction, a storage section that stores and sends the opening / closing body in an upper side thereof, and winds up the opening / closing body in the storage section. An opening / closing device including a winding body that is driven and extended, an opening / closing device that drives and rotates the winding body, and a control unit that controls the opening / closing device. It is arranged in the vicinity of one end of the holder, and the non-drive shaft side is fixed toward the other end of the winding body, and an inspection port and the inspection port can be opened on the lower surface of the storage unit. A closing member for closing, and the control unit is fixed to the upper or lower part of the switch with the work surface having at least a signal line connection part for control facing the non-drive shaft side, In the storage unit, the work surface of the control unit is on the side opposite to the drive shaft than the work surface of the control unit. Working space is ensured for performing work, the inspection opening is opened in a range containing the opener and the working space.
According to this configuration, if the inspection member is opened by removing the closing member, the inspection port communicates with the work space, and the work space is located near the work surface of the control unit. It is possible to easily perform work on the work surface of the control unit, such as wire attachment / detachment work.

As a second feature, the control unit is fixed to an upper portion of the switch, and a circuit breaker for a power circuit of the switch is provided on an upper side of the work space so that an operation surface is directed downward. Is fixed.
According to this structure, operation with respect to a circuit breaker can be easily performed from the inspection port at the time of opening.

As a third feature, the circuit breaker is fixed to an upper side of a circuit breaker support bracket having a lower end connected to the control unit, and is positioned above the work surface.
According to this configuration, the circuit breaker can be handled integrally with the control unit, and both the work on the work surface of the control unit and the operation on the circuit breaker can be performed satisfactorily.

As a fourth feature, the breaker support bracket is provided so as to be slidable to the working space side.
According to this configuration, operations such as attachment / detachment or replacement of the circuit breaker can be easily performed.
More preferably, the control unit mounting bracket is screwed from the working space side.

As a fifth feature, the control unit is provided so as to be slidable to the working space side with respect to the switch.
According to this configuration, it is possible to remove the control unit by pulling it out to the work space side without an obstacle or the like, and as a result, workability during maintenance can be improved.
More preferably, the control unit is screwed from the working space side.

As a sixth feature, the control unit mounting bracket is fixed to the upper part of the switch, the control unit is fixed to the upper surface side of the control unit mounting bracket,
On the lower surface of the control unit, a projecting piece projecting toward the drive shaft is provided, and the projecting piece is provided with a recess opening on the drive shaft.
The control unit mounting bracket has a recessed surface and a projecting portion that are fitted from the drive shaft side to the sliding surface on which the control unit is mounted and slid, and the projecting piece portion and the recessed portion of the control unit, respectively. Is provided.
According to this configuration, the control unit can be slid and attached, and at the time of mounting, rattling in the vertical direction is caused by the fitting between the protruding piece on the control unit side and the recess on the control unit mounting bracket side. Further, rattling in the direction intersecting the winding body can be suppressed by fitting the concave portion on the control portion side and the convex portion on the control portion mounting bracket side.

As a seventh feature, the inspection port has an opening on the side opposite to the drive shaft from the opening / closing machine that can pass through the control unit in the vertical direction.
According to this configuration, the control unit can be pulled out to the work space side without an obstacle and the like, and can be pulled out from the inspection port to the outside of the storage unit, thereby further improving the workability during maintenance. Can do.

In the present specification, the “opening / closing body closing direction” means a direction in which the opening / closing body slides so as to partition the space at the opening opened / closed by the opening / closing device, and is referred to as “opening / closing body opening direction”. Means a direction opposite to the closing direction of the opening / closing body. Further, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides in order to partition or open the space in the opening that is opened and closed by the opening / closing device. Further, in the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the fully closed state. Further, in this specification, the “opening / closing body width direction” or “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing body opening / closing direction but not the thickness direction of the opening / closing body. Further, in the present specification, “surface direction” means a direction in which the surfaces of the fully-closed opening / closing body are continuous.
The “drive shaft side” means the direction in which the drive shaft projects in the axial direction of the drive shaft of the switch, and the “counter drive shaft side” means the opposite direction side to the drive shaft side.

Next, a preferred embodiment having the above features will be described in detail with reference to the drawings.
An opening / closing device 1 shown in FIG. 1 is disposed in or inside an opening portion or inside of a housing such as a house, building, warehouse, factory, underground mall, tunnel, or vehicle loading platform, and opens and closes the opening portion or opens a space inside the housing. It can be applied as a shutter device for partitioning or opening.

  The opening / closing device 1 includes an opening / closing body 10 that opens and closes while sliding in the up / down direction, a guide rail 20 that surrounds an end of the opening / closing body 10 in the width direction, and guides the opening / closing body 10 above the opening / closing body 10. A storage unit 30 that stores and sends out the storage unit 30 is provided so that maintenance work in the storage unit 30 can be performed from the lower side.

  The opening / closing body 10 includes an opening / closing body main body 11 and a movable seat 12 connected to the lower end side of the opening / closing body main body 11 and movable in the vertical direction relative to the opening / closing body main body 11.

  The openable / closable body 11 is connected to a plurality of so-called slats 11a formed by bending a horizontally-long substantially rectangular metal plate so as to rotate between the slats 11a and 11a adjacent vertically. The movable seat plate 12 is formed in a long shape extending in the opening / closing body width direction, and is connected to the lower end side of the opening / closing body main body 11 so as to slide in the vertical direction.

  The guide rail 20 is a substantially U-shaped member that surrounds the widthwise end of the opening / closing body 10, and a seating target portion G (for example, a floor surface, the ground, a frame member, etc.) seated by the opening / closing body 10. It arrange | positions over between the accommodating parts 30 (refer FIG. 1).

  In addition, the storage unit 30 includes a winding body 32 that winds and unwinds the opening / closing body 10 in the storage case 31, and rotates the winding body 32 via power transmission means such as a chain and a sprocket. A switch 34 for braking or the like, a control unit 36 for controlling the switch 34 and the like, and a circuit breaker 37 for a power circuit (see FIG. 1).

The storage case 31 is formed by assembling shaped steel frame materials in a rectangular parallelepiped shape and closing the outer peripheral surface thereof with a sheet metal or the like as necessary.
In the storage case 31, work on the work surface 36a is performed on the counter drive shaft side (right side according to FIG. 1) from the work surface 36a (see FIGS. 1 and 4) of the control unit 36. A working space S for performing is secured.
Further, on the lower end surface of the storage case 31, an inspection port 30a for performing maintenance work on the control unit mounting bracket 38, the switch 34 and the circuit breaker 37, and a closing member 30b for closing the inspection port 30a so as to be openable. And are provided.

  As shown in FIGS. 1 and 2, the work space S is a space located on the counter drive shaft side of the work surface 36 a and the counter drive shaft side of the switch 34. According to the example shown in FIG. 1, the work space S includes a control unit 36 removed from the switch 34 for maintenance or the like, a control unit mounting bracket 38, a circuit breaker support bracket 39, a circuit breaker 37, and the like. It is ensured that it can be temporarily passed.

  The inspection port 30a is located in a range including the switch 34 and the work space S, and the control unit 36, the control unit mounting bracket 38, the circuit breaker support bracket 39, and the like are moved up and down on the side opposite to the drive shaft from the switch 34. An opening that can pass in the direction is secured.

  The closing member 30b is attached to the storage case 31 so as to cover and close the inspection port 30a. The closing member 30b may be configured to open and close with respect to the storage case 31 by rotating a hinge or the like around the shaft, or to be detachably engaged with the storage case 31.

  The winding body 32 is a shaft-like or cylindrical member that is rotatably supported with respect to the storage case 31 via a bracket or the like, and is provided across the opening / closing body lateral width direction.

The switch 34 is, for example, a switch having a known structure disclosed in Japanese Utility Model Laid-Open No. 01-118084, and includes an electric motor serving as a power source and a brake that brakes rotation of a drive shaft of the electric motor. A mechanism, an urging member that maintains the brake mechanism in a braking state, an electromagnetic solenoid that releases the braking state of the brake mechanism against the urging force of the urging member, and the like are provided. According to this switch 34, the drive shaft can be rotated forward or reverse by phase-controlling the electric power supplied to the electric motor.
The opening / closing machine 34 has a drive shaft disposed in the vicinity of one end portion (left end portion according to FIG. 1) of the winding body 32, and a reverse drive shaft side opposite to the drive shaft side. The body 32 is fixed to the storage case 31 toward the other end. The fixing portion may be a fixed portion other than the closing member 30b in the storage case 31, and is fixed to a frame member, a sheet metal, or the like constituting the storage case 31 via a bracket or the like.

  In FIG. 2, reference numeral 34 a is a chain for manually turning the drive shaft of the switch 34 in an emergency or the like, and is bent and stored in the storage case 31 in normal times.

The control unit 36 includes, for example, an electronic circuit (for example, a microcomputer) that causes the central processing unit (CPU) to function based on a program, a relay, and the like, and receives a plurality of signals input from the outside of the control unit 36. Processing is performed, and the operation of the switch 34 is controlled according to the processing result.
The control unit 36 includes, for example, a signal line connection unit for control, a display for displaying an open / close position and an abnormal state, a changeover switch for switching a control mode, a switch for inputting a set value, and the like. A surface 36a is provided. The control unit 36 is fixed to the upper or lower portion (upper portion in the illustrated example) of the switch 34 with the work surface 36a facing the counter-drive shaft side (rightward in FIG. 1).
The signal line connection unit includes, for example, a signal line from an operation switch (open switch, close switch, stop switch, etc.), a signal line from an upper / lower limit switch that senses the open / close state of the opening / closing body 10, a movable seat plate 12, This is a terminal to which a signal line from an obstacle sensing device such as a photoelectric sensor is connected.

As shown in FIG. 4, the external shape of the control unit 36 has a rectangular box shape, and a projecting piece 36b that protrudes toward the drive shaft side (left side according to FIG. 1) is provided on the lower surface. . The protruding piece 36b is a plate-like protrusion that protrudes across the opening / closing body thickness direction. The projecting piece 36b is provided with a plurality (two in the illustrated example) of recesses 36b1 that are open on the drive shaft side.
And the control part 36 is fixed to the upper part of the switch 34 via the control part mounting bracket 38 grade | etc.,.
In FIG. 4, reference numeral 36 c is a screw hole for screwing a fastening tool 39 b 3 (for example, a screw or a bolt, see FIG. 2) inserted through the through hole 38 e 1 of the control unit mounting bracket 38.

  As shown in FIG. 6, the control unit mounting bracket 38 is formed in a substantially plate shape from a metal sheet metal material or the like, and has a substantially flat sliding surface 38a on which the control unit 36 is mounted and slid. 36 to be fitted into a projecting portion 36b and a recessed portion 36b1 of a recessed portion 38b and a projected portion 38c that are fitted from the drive shaft side (right side according to FIG. 1), and a circuit breaker support bracket 39 described later. The part 38d, the control part 36, and the circuit breaker support bracket 39 are integrally provided with a to-be-attached piece 38e and the like. And this control part mounting bracket 38 is being fixed to the upper part side of the switch 34 with fastening tools, such as a volt | bolt, a screw, a sleeve, and a mounting bracket.

The concave portion 38b and the convex portion 38c are formed so as to cut up the side closer to the drive shaft in the sliding surface 38a of the control unit mounting bracket 38.
The recess 38b is a recess formed on the inner side of a projecting piece that protrudes upward in an inverted L-shaped cross section from the vicinity of the drive shaft of the slide surface 38a, and the opening faces the counter drive shaft. The vertical opening width of the recess 38b is appropriately set so that the protruding piece 36b of the control unit 36 can be fitted and removed.
In addition, the convex portion 38c is formed in a piece shape protruding upward from the vicinity of the drive shaft of the slide surface 38a, and a plurality of (see FIG. According to the example, two) are provided.

  Further, the fitted piece portion 38d protrudes downward in an L-shaped cross section from the vicinity of the counter drive shaft on the back surface of the slide surface 38a, and the opening faces the counter drive shaft side.

  Further, as shown in FIG. 6, the to-be-attached piece 38 e is formed by bending the edge of the control unit mounting bracket 38 on the side opposite to the driving shaft upward. In the to-be-fixed piece 38e, a through hole 38e1 for fixing and fixing the control unit 36 is provided at the center in the longitudinal direction, and a circuit breaker support bracket 39 is fixed to both sides in the same direction. Screw holes 38e2 and 38e2 are provided.

  In addition, the code | symbol 38f, 38g, 38h, 38i is a fastening piece fastened to the switch 34, and has a through-hole which penetrates a volt | bolt, a screw, etc. in FIG.

The circuit breaker 37 is a device that protects the switch 34 by blocking the power supply circuit of the switch 34 by overcurrent or the like.
The circuit breaker 37 is positioned above the work space S and the work surface 36a with the operation surface 37a facing downward by way of the circuit breaker support bracket 39 supported by the control unit mounting bracket 38. It is possible to remove it by sliding to the working space S side with respect to the switch 34 and the control unit mounting bracket 38 (see FIG. 2).

  As shown in FIG. 7, the breaker support bracket 39 is bent downward from the breaker mounting portion 39a and the substantially horizontal plate-like breaker mounting portion 39a by bending a metal sheet metal material or the like. The two mounting pieces 39b and 39b are integrally formed.

  According to the illustrated example, the circuit breaker attachment portion 39a is formed in a substantially rectangular plate shape, and the circuit breaker 37 is attached to the lower surface of the circuit breaker attachment portion 39a by a fastening tool (for example, a bolt or a screw).

The two attachment pieces 39b and 39b are arranged at an interval so as to be positioned on one end side and the other end side in a direction intersecting the drive shaft direction of the switch 34, and between these, the control unit 36 and the control The part mounting bracket 38 is located.
Each mounting piece 39b is driven against a bent piece 39b1 bent in a substantially horizontal direction so as to be in contact with the lower surface of the control unit mounting bracket 38 and a to-be-attached piece 38e of the control unit mounting bracket 38. A fastening piece 39b2 bent upward so as to come into contact with the shaft side. The fastening piece 39b2 is provided with a through-hole through which a fastening tool 39b3 (for example, a screw or a bolt) can be inserted.
When the breaker support bracket 39 having the above-described configuration is assembled to the switch 34 and the control unit mounting bracket 38, the two mounting pieces 39b and 39b are slid along the lower surface of the control unit mounting bracket 38 toward the drive shaft. Then, each mounting piece 39b fits into the fitted piece 38d of the control unit mounting bracket 38, and the fastening piece 39b2 overlaps the secured piece 38e at the rear end of the control unit mounting bracket 38. . In this state, a fastening tool 39b3 (for example, a screw or a bolt, see FIG. 2) may be inserted into the fastening piece portion 39b2, and the fastening tool 39b3 may be screwed into the fastening piece portion 38e.

Next, the characteristic effect of the opening / closing device 1 having the above-described configuration will be described in detail.
If the inspection port 30a is opened by removing the closing member 30b or the like while the switchgear 1 is installed on the site or the like, the inspection port 30a communicates with the work space S, and the work space S is covered by the control unit 36. It is located near the work surface 36a and the operation surface 37a of the circuit breaker 37. Therefore, maintenance work for the control unit 36, such as signal line connection work to the control unit 36, control mode switching work, setting value changing work, display confirmation, circuit breaker 37 on / off, operation mode switching, etc. Work and operation can be easily performed.

  Further, when removing only the circuit breaker 37 for replacement or the like, loosen and remove the fastening device 39b3 (see FIG. 2), pull out the circuit breaker support bracket 39 to the work space S side, and further under the work space S. What is necessary is just to let it pass to the side inspection port 30a. And when installing the circuit breaker 37, what is necessary is just to perform the operation | work reverse to the above.

  Furthermore, when removing the control part 36 from the switch body 10 for parts replacement etc., after removing the circuit breaker 37 and the circuit breaker support bracket 39 as mentioned above, the to-be-attached piece part 38e (refer FIG. 6). ) And the fastening tool 39b3 (see FIG. 2) inserted and fastened through the center side through hole 38e1 is removed, and the portion of the control unit 36 on the side opposite to the drive shaft is lifted higher than the height of the fastened piece 38e. When the control unit 36 is slid to the opposite drive shaft side, the drive shaft side protruding piece 36b on the lower surface of the control unit 36 is detached from the control unit mounting bracket 38. Further, the controller 36 can be moved so as to be pulled out toward the work space S, and the controller 36 can be moved downward and pulled out of the storage unit 30 from the inspection port 30a.

  Further, in order to mount the control unit 36, it is only necessary to perform the reverse operation. At this time, the relatively heavy control unit 36 can be slid on the control unit mounting bracket 38 and fixed in place. The workability is good. In addition, the control unit 36 after mounting is fitted and fixed to the projecting piece 36b and the recesses 36b1 and 36b1 (see FIG. 4) and the recess 38b and the projections 38c and 38c on the control unit mounting bracket 38 side. By tightening the tool 39b3 or the like, rattling in the direction intersecting with the drive shaft direction is suppressed.

  In the above embodiment, as a particularly preferable aspect, the control unit 36 is provided on the upper side of the switch 34. However, as another example, the control unit 36 may be disposed on the lower side of the switch 34. .

  Moreover, according to the said Example, although the inspection port 30a and the closure member 30b were provided in a part of opening-and-closing body width direction in the lower surface side of the accommodating part 30, as these examples, these inspection port 30a and a closure member are provided. It is also possible to provide 30 b on the entire lower surface of the storage unit 30.

  Moreover, according to the example of illustration, the dimension of the inspection port 30a was set so that the control part 36, the control part mounting bracket 38, etc. at the time of removal can pass below in the non-drive shaft side of the switch 34. However, as another example, when the removal of the control unit mounting bracket 38 is not assumed, the dimension can be set such that the control unit 36 and the control unit mounting bracket 38 cannot pass through. However, even in this case, the dimensions of the work space S are appropriately set so that the worker or the like can perform the maintenance work from the inspection port 30a to the work surface 36a.

  Further, according to the illustrated example, the storage portion 30 has a rectangular parallelepiped shape. However, the storage portion 30 may not have a rectangular parallelepiped shape as long as the inspection portion 30a and the closing member 30b are provided on the lower surface. The winding body 32, the opening / closing device 34, and the control unit 36 may be accommodated using a space such as a simple ceiling space.

  In the example of FIG. 3, the switch 34, the control unit 36, the circuit breaker 37, the work space S, and the like are fed out with respect to the center of the winding body 32 in the opening / closing body thickness direction (left-right direction in the drawing). The opening / closing body 10 (and the guide rail 20) is located on the opposite side (right side in the drawing). However, as another example, the winding body 32 is reversed in the winding and feeding rotation direction. The switch 34, the controller 36, the circuit breaker 37, the work space S, and the like are located on the same side (left side in the drawing) as the open / close body 10 (and the guide rail 20). Is also possible.

In the example of FIG. 3, the inspection port 30a, the switch 34, the control unit 36, the circuit breaker 37, the work space S, and the like are arranged side by side with respect to the winding body 32 in the opening / closing body thickness direction. However, as another example, for the purpose of shortening the dimension in the opening / closing body thickness direction of the storage portion 30, at least a part of the inspection port 30a with respect to the winding body 32 (if necessary, The switch 34, the control unit 36, the circuit breaker 37, the work space S, etc., and the relationship of overlapping with the winding body 32 in the switch body thickness direction (however, the relationship is shifted in the vertical direction and does not interfere) ). In order to do this, as shown in FIG. 3, in the opening / closing body thickness direction, with respect to the center of the winding body 32, the switch 34, the control unit 36, the circuit breaker 37, the work space S, etc. Positioning the opening / closing body 10 (and the guide rail 20) on the opposite side (left side in the illustrated example) is advantageous because the inspection port 30a and the like do not interfere with the opening / closing body 10 to be fed.
In addition, about the structure which positions the switch 34, the control part 36, the circuit breaker 37, work space S, etc. with respect to the center of the winding body 32 on the same side as the opening / closing body 10 (and guide rail 20) extended. For example, if the guide rail 20 is disposed near the center of the winding body 32 so that the extended opening / closing body 10 is swallowed by the guide rail 20 near the center of the winding body 32, the opening and closing is similar to the above. It is possible to make it the structure which overlaps in a body thickness direction.

  Further, as other examples of the opening / closing body 10, one or a plurality of panels, a sheet-like material, a net-like material arranged in the opening-closing direction, or a slat, a panel, a pipe, a sheet-like material, a net-like material It is possible to adopt an embodiment in which these are appropriately combined.

30: Storage part 30a: Inspection port 30b: Closing member 31: Storage case 32: Winding body 34: Switch 36a: Work surface 37: Circuit breaker 38: Control part mounting bracket 38b: Concave part 38c: Convex part 38e: Secured piece 39: Breaker support bracket 39b: Mounting piece 39b1: Bending piece S: Work space

Claims (7)

An opening / closing body that opens and closes in the vertical direction, a storage section that stores and sends out the opening / closing body above, a winding body that winds and unwinds the opening / closing body in the storage section, and the winding An opening / closing apparatus comprising an opening / closing device for driving and rotating the body and a control unit for controlling the opening / closing device,
The opening / closing machine is arranged with the drive shaft side in the vicinity of one end portion of the winding body, and the counter drive shaft side is fixed toward the other end direction of the winding body,
On the lower surface of the storage portion, an inspection port and a closing member for closing the inspection port so as to be openable are provided,
The control unit is fixed to the upper or lower part of the switch, with the work surface having at least a signal line connection unit for control facing the non-drive shaft side,
In the storage portion, a work space for performing work on the work surface is secured on the side opposite to the drive shaft from the work surface of the control unit,
The inspection opening is opened in a range including the opening / closing machine and the work space. The control unit is fixed to the upper part of the switch,
2. The switchgear according to claim 1, wherein a circuit breaker for a power supply circuit of the switch is fixed on an upper side of the work space so that an operation surface faces downward.   3. The opening / closing device according to claim 2, wherein the circuit breaker is fixed to an upper side of a circuit breaker support bracket having a lower end side connected to the control unit, and is positioned above the work surface. apparatus.   The switchgear according to claim 3, wherein the circuit breaker support bracket is provided so as to be slidable and removed to the working space side.   The switchgear according to any one of claims 2 to 4, wherein the control unit is provided so as to be slidable toward the work space side with respect to the switchgear. A control unit mounting bracket is fixed to the upper part of the switch, and the control unit is fixed to the upper surface side of the control unit mounting bracket.
On the lower surface of the control unit, a projecting piece projecting toward the drive shaft is provided, and the projecting piece is provided with a recess opening on the drive shaft.
The control unit mounting bracket has a recessed surface and a projecting portion that are fitted from the drive shaft side to the sliding surface on which the control unit is mounted and slid, and the projecting piece portion and the recessed portion of the control unit, respectively. The switchgear according to claim 5, wherein the switchgear is provided.   The switchgear according to any one of claims 1 to 6, wherein the inspection port has an opening that can pass through the control unit in a vertical direction on the side opposite to the drive shaft from the switchgear.

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