JP5351434B2 - Winding device for building switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate replacement work in replacing a manual shutter device with an electric shutter device. <P>SOLUTION: One end side part 1c of an electric motor 5a projected from one end of a drum 7 constituting a winding device 3 is provided with a first connecting member 9, and a support bracket 2a is provided with a second connecting member 10. In connecting these connecting members 9, 10 to fix one end of the winding device 3 to the support bracket 2a, the first and second connecting members 9, 10 are constituted to be located inside the outer diameter of the drum 7. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention belongs to the technical field of a winding device in a building opening / closing device provided in an opening of a building.

Generally, in this type of building opening and closing device, there is a so-called shutter device in which an opening and closing body that opens and closes an opening is a shutter curtain, for example, and in this, a winding device for winding the shutter curtain is provided above the opening, The shutter curtain opens and closes the opening as the winding device rotates forward and backward. In such a device, in the manual shutter device that manually opens and closes the shutter curtain, the winding device includes a fixed shaft and a drum that is supported by the fixed shaft, and is connected to the drum. The shutter curtain is directly gripped and manually operated. In this case, the manual winding device is supported on the housing side by fixing the left and right ends of the fixed shaft to a pair of left and right support brackets provided above the housing opening, and the support bracket is A U-shaped fixed shaft support portion protruding inward in the left-right direction is formed.
On the other hand, in the electric shutter device in which the winding device is rotated by the driving force of the electric motor so that the shutter curtain automatically opens and closes, one end of the drum is electrically operated as the electric winding device. Some are designed to be made compact by incorporating a motor. In this case, the one end portion of the electric winding device is configured to directly fix and support the electric motor protruding outside from the drum end portion to the support bracket on the housing side, and corresponds to the electric winding device. The support bracket basically has a shape and a configuration different from those of the support bracket in which the fixed shaft support portion corresponding to the manual winding device is formed. For this reason, when a manual shutter device is already installed, replacing it with an electric shutter device requires a large-scale construction and work such as replacement of members such as a support bracket and a guide rail. is there.

As an improvement measure, conventionally, a connecting member having a leg piece arranged along the fixed shaft support portion is interposed between one end side surface of the electric motor protruding from the drum of the electric winding device and the support bracket. In addition, the electric winding device is configured to be provided on the support bracket in a state in which the fixed shaft support portion provided on the support bracket is not in the way so that the replacement work of the support bracket is not required. Has been advocated.
JP 2004-257167 A

  However, in the said conventional thing, the connection member is formed larger than the outer diameter of the drum of a winding device. For this reason, in the manual shutter device, the left and right width of the shutter curtain could be set to a state close to the bracket surface of the support bracket, but when the electric shutter device is replaced, the electric motor is The shutter curtain can be provided as far as the position close to the support bracket for the other end that is not provided, but the connection member that is larger in diameter than the drum is provided for the one end that is provided with the electric motor. The shutter curtain cannot be brought close to the support bracket, and must be set to a shutter curtain having a narrower left and right width than in the manual type. As a result, not only the shutter curtain needs to be replaced, but also the guide rail that guides the left and right sides of the shutter curtain, or the construction of a separate guide section on the guide rail on one end side, etc. There is a need and improvement and there is a problem to be solved by the present invention.

The present invention, which was created for the purpose of solving these problems in view of the such circumstances above, the invention of claim 1, a drum, a stationary shaft for axially supported rotatably to said drum, A fixed shaft support portion for fixing and supporting the fixed shaft includes a support bracket projecting inward in the left-right direction, and a through hole formed in the indoor and outdoor direction through the fixed shaft and the fixed shaft support portion. A manual winding device configured to fix and support the fixed shaft to the fixed shaft support by inserting the bolt and tightening the nut , with the support bracket remaining, and the electric motor unit relative to one end of the drum One end side portion of the electric motor unit that protrudes from one end in the left-right direction of the drum of the electric winding device in a switching device that is changed from a manual type to an electric type by replacing the electric winding device that is rotatably mounted. the, Upon supports via a consolidated member fixed to the serial remaining support bracket, said connecting member is disposed along the inside and outside of the fixed shaft supporting member, provided is located inside the outer diameter of the drum The leg piece is formed with a through hole corresponding to the through hole formed in the fixed shaft support portion, and the electric motor unit includes the leg piece of the connecting member and the fixed shaft support portion. The building is characterized in that it is fixedly supported on the support bracket via a connecting member by an integrated means inserted through a through hole formed in each of the leg pieces and the fixed shaft support portion in a state of being laminated indoors and outdoors. It is the winding device in the opening / closing device for use.
According to a second aspect of the present invention, the connecting member includes a leg piece that is fixed to one side surface of the electric motor unit and extends along the fixed shaft support portion, and corresponds to a through hole formed in the fixed shaft support portion in the leg piece . A first connecting member in which a through hole is formed and a leg piece fixed to the support bracket and extending along the fixed shaft support portion, and a through hole corresponding to the through hole formed in the fixed shaft support portion is formed in the leg piece The electric motor unit is configured to support each leg piece and the fixed shaft in a state where the leg pieces and the fixed shaft support portion of the first and second connection members are laminated in the indoor and outdoor directions, respectively. 2. The architectural opening / closing device according to claim 1, wherein the support bracket is fixedly supported by the support bracket via the first and second connecting members by means of integration means inserted through the through-holes formed in the respective portions . It is a winding device.

According to the invention of claim 1, not only the support bracket but also the existing shutter curtain and guide rail can be used as they are, and the change from the manual type to the electric type becomes easy.
According to the invention of claim 2, the fixed shaft support portion can be used as a member for connecting the first and second connecting members, and the first and second connecting members can be securely fixed, and also to the support bracket. The acting load can be dispersed, and the first and second connecting members can be made compact without reinforcing the support bracket .

Next, a first embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a shutter curtain 1 of a shutter device provided in a window (housing opening) of a house, and the shutter curtain 1 is formed by connecting a plurality of slats 1a so as to be rotatable in the vertical direction. It is configured. The shutter curtain 1 is connected to a winding device 3 whose upper edge is pivotally mounted in a shutter case 2 provided on the housing side above the opening via a plurality of connecting brackets 1b in the left-right direction. The winding device 3 is set so as to be transformed into a fully open posture in which the opening is opened and the fully closed posture in which the opening is unwound from the winding device 3.
The shutter curtain 1 is set so that the left and right side portions are moved and guided by guide rails 4 erected on the left and right sides of the opening, and these basic configurations are all conventional.

By the way, the shutter device of the present embodiment is changed to an electric shutter device by removing the manual winding device from the existing manual shutter device and replacing it with the electric winding device 3. It is configured. Therefore, the pair of left and right support brackets 2a corresponding to the left and right side plates constituting the shutter case 2 correspond to a manual shutter device, and U-shaped fixed shaft support portions (pockets) 2b are provided on the inner surfaces facing each other. Each is formed so as to protrude toward the inside.
Incidentally, as described above, the manual winding device includes a fixed shaft and a drum that is rotatably fitted to the fixed shaft, and the left and right fixed shafts are fixed shaft support portions of the support bracket 2a. 2b is fitted and supported, and a bolt is inserted through the through hole of the fixed shaft and the through hole 2d of the fixed shaft support portion 2b formed in the indoor and outdoor direction, and the nut is fastened and fixed to the insertion tip. By fixing and supporting the shaft to the fixed shaft support portion 2b, the winding device is configured to be supported on the support bracket 2a.

As described above, the winding device 3 is electrically operated, and includes an electric motor unit 5 disposed at one end portion in the left-right direction (axial direction) (right side in FIG. 3 in the present embodiment) and the other end in the left-right direction. A fixed shaft unit 6 disposed on the portion (left end portion) and a drum 7 that is rotatably fitted to the units 5 and 6 are configured.
The electric motor unit 5 includes an electric motor 5a housed in a metal casing, and an output shaft 5b projects from the other end side of the electric motor 5a. A drive hole 8 is interlocked and connected to the output shaft 5b, and the output shaft 5b and the drive wheel 8 are configured to rotate integrally with the drive of the electric motor 5a. Further, a driven wheel 8a is rotatably fitted on the outer periphery on one end side of the electric motor 5a.
On the other hand, the fixed shaft unit 6 includes a shaft portion 6a that is concentric with the output shaft 5b of the electric motor 5a, and the other end side of the shaft portion 6a is similar to the manual winding device. The portion is configured to be fixedly supported by a fixed shaft support portion 2b formed on the left support bracket 2a. In addition, two driven wheels 8a adjacent to the left and right are fitted on the outer periphery of one end side portion of the shaft portion 6a of the fixed shaft unit 6 so as to be rotatable.
The drum 7 is externally fitted to and supported by a driven wheel 8 a disposed in the electric motor unit 5 and a driven wheel 8 a disposed in the fixed shaft unit 6, and the inner peripheral surface of the drum 7 is supported. By being interlocked and connected to a drive wheel 8 provided on the output shaft 5b of the electric motor unit 5, it is configured to rotate forward and backward in conjunction with the drive of the electric motor 5a.

The electric motor unit 5 of the winding device 3 has one end side portion 5 c protruding outward (one end side) from one end side of the drum 7, but the one end side portion 5 c is larger than the outer diameter of the drum 7. Is smaller in diameter but larger in diameter than the outer diameter of the other end portion of the electric motor unit 5 , and a plurality of protrusions 5d are formed in the circumferential direction. Further, the one end side portion 5c is provided with screw holes 5e that can be screwed in from one end side in two places at the top and bottom.
And the 1st connection member 9 of this invention is being fixed to the one end side surface 5f in the one end side part 5c of the said electric motor unit 5. As shown in FIG.
The first connecting member 9 is formed in a rectangular shape that is long in the vertical direction, and is supported by a motor fixing piece 9a that abuts against one end side surface 5f of the electric motor unit 5 and both indoor and outdoor edges of the motor fixing piece 9a. Projecting to the bracket 2a side (one end side), projecting toward the support bracket 2 from a pair of first leg pieces 9b arranged along the indoor and outdoor sides of the fixed shaft support part 2b, and the motor fixing piece 9a, It has a locking piece 9c formed in an L shape by bending the protruding tip downward. And the 1st connection member 9 abuts the motor fixing piece 9a on the electric motor one end side surface 5f, and the upper and lower through holes 9d formed in the motor fixing piece 9a are formed in the electric motor unit one end side portion 5c. The screw 9e is aligned with the screw hole 5e, and the screw 9e inserted from the through hole 9d side is screwed into the screw hole 5e, so that the electric motor unit 5 is integrally fixed. At this time, the first connecting member 9 is set to a size located inside the outer diameter of the drum 7, and the first connecting member 9 is attached to the one end portion 5 c of the electric motor unit . It does not protrude from the outer diameter, and the interval between the first leg pieces 9b is set to be wider than the width of the fixed shaft support portion 2b provided in the support bracket 2a in the indoor / outdoor direction.

On the other hand, as described above, the support bracket 2a on the right side (one end side) remains for the manual winding device, and the fixed shaft support portion 2b is formed to protrude toward the other end side (left side). The second connecting member 10 in which the present invention is implemented is fixed to the support bracket 2a.
The second connecting member 10 is parallel to the bracket surface of the right support bracket 2a, is abutted against the motor fixing piece 9a of the first connecting member 9 provided in the electric motor 5a, and has a locking piece 9c at the upper edge. The base piece 10a to be locked is provided. A pair of second leg pieces 10b are formed on both side edges of the base piece 10a indoors and outdoors, and project along one end side and are arranged along the indoor and outdoor sides of the fixed shaft support piece 2b. A bracket fixing piece 10c extending in the indoor / outdoor direction is formed at the protruding end of the piece 10b. And the left-right direction length of the 2nd leg piece 10b of the 2nd connection member 10 is formed longer than the left-right direction length of the fixing shaft support part 2b of the right side support bracket 2a, and the bracket fixing piece 10c is made into the right side support bracket. The base piece 10a is set to be positioned on the other end side of the fixed shaft support portion 2b by being abutted against 2a and fixed by the rivet 10d. Further, the base piece 10a of the second connecting member 10 is formed with a shaft portion 10e protruding to one end side, and the shaft portion 10e is fixed in a state of being fitted and supported on the support bracket fixing shaft support portion 2b. Thus, the second connecting member 10 is set so as to be positioned with respect to the support bracket 2a.
And in this thing, the 2nd connection member 10 is the state which made the right side support bracket 2a support the one end part of the winding device 3 using the 1st, 2nd connection members 9 and 10, so that it may mention later. The second winding member 10 is set to a size located inside the outer diameter of the drum 7 of the electric winding device 3, the second connecting member 10 does not protrude from the outer diameter of the drum 7, and the second leg piece 10b is The fixed shaft support portion 2b provided on the support bracket 2a is configured to have a facing interval that fits inside and outside, and the facing distance of the first leg piece 9b is a spacing that fits the second leg piece 10b. It is set to become.

And in the axial direction one end side of the electrically-driven winding apparatus 3, the 1st leg piece 9b of the 1st connection member 9 is externally fitted by the leg piece 10b of the 2nd connection member 10 fixed to the right side support bracket 2a. By installing the locking piece 9c so as to be locked to the upper end edge of the second connecting member base piece 10a, the fixed shaft support portion 2b of the support bracket 2a is temporarily supported on the support bracket 2a at one end side without interfering with it. On the other hand, on the other end side in the axial direction, the shaft portion 6a of the fixed shaft unit 6 is fitted and supported by the fixed shaft support portion 2b of the left support bracket 2a so as to be incorporated into a temporary holding shape. ing. In this state, the first and second connecting members 9, 10 are positioned in the vertical direction by the locking piece 9c being locked to the base piece 10a, and the first leg piece 9b is turned into the second leg piece 10b. It is connected in a state in which the positioning in the indoor / outdoor direction is performed by external fitting, whereby the winding device 3 is supported by the left and right support brackets 2a, and the fixed shaft unit shaft portion 6a on the other end side and one end It is configured to be aligned with the output shaft 5b of the side electric motor 5a.
At this time, the first and second connecting members 9 and 10 are configured to be assembled in a state where the first connecting member motor fixing piece 9a and the second connecting member base piece 10a are in contact with each other. The piece 10a has a structure in which a through hole 10f for avoiding interference with a screw 9e for fixing the motor fixing piece 9a to the electric motor one end side portion 5c is opened. The motor fixing piece 9a and the base piece It is also possible to set so as to be incorporated in a state of being separated from 10a.

In the temporarily assembled state, on the fixed shaft unit 6 side on the other end side of the winding device 3, the through hole of the shaft portion 6 a opened in a continuous manner and the fixed shaft are provided as in the manual winding device. The bolt 11 is inserted into the through hole 2d of the support portion 2b , and the nut 11a is fastened to the insertion tip portion of the bolt 11, whereby the shaft portion 6a is fixed to the fixed shaft support portion 2b, and the support on the fixed shaft unit 6 side is supported. The bracket 2a is configured to be fixedly supported.
On the other hand, on the side of the electric motor unit 5 on one end side of the winding device 3, as is clear from FIGS. 3 and 8, the through hole 2 d of the fixed shaft support portion 2 b of the right support bracket 2 a and the first connecting member 9. The through hole 9f of the first leg piece 9b, the through hole 10g of the second leg piece 10b of the second connecting member 10, and the through hole of the second connecting member shaft portion 10e are respectively opened in communication with each other. The leg pieces 9b and 10b and the fixed shaft support portion 2b of the first and second connecting members 9 and 10 are assembled in a laminated manner in the indoor and outdoor directions, respectively, and are attached to the leg pieces 9b and 10b and the fixed shaft support portion 2b. The first and second connecting members 9 and 10 are fixed to the fixed shaft support portion 2b by inserting the split pins 12 corresponding to the integration means into the through holes 2d, 9f and 10g, respectively , and the electric motor Support bracket on the unit 5 side Fixed support for a is configured to be made.
When the electric motor 5a is driven, the electric motor unit 5 is locked by the first connecting member locking piece 9c being locked to the second connecting member base piece 10a while being fixed by the split pin 12. Is set to be supported by the support bracket 2a. At this time, the load of the shutter curtain 1 and the winding drum 3 is applied to the second connecting member 10, and the load acts on the support bracket 2 a side from the second connecting member 10. In the two connecting member 10, four bracket fixing pieces 10c provided on the second leg piece 10b are connected to the support bracket 2a, and the second leg piece 10b is connected to the fixed shaft support portion 2b via the split pin 12. In addition, the load acting on the support bracket 2a is set to be dispersed by the load of the second connection member 10 acting on the support bracket 2a via these connection portions. Further in this thing, the second connecting member 10 shaft section 10e is formed, since the shaft portion 10e is fitted and supported on the fixed shaft supporting portion 2b, the load which the second coupling member 10 receives the shaft portion 10e and the fixed shaft support portion 2b are received through a wide contact area, and the load from the second connecting member 10 can be further dispersed and applied to the support bracket 2a, thereby reinforcing the support bracket 2a. As a result, the load acting on the support bracket 2a is concentrated even if the first and second connecting members 9 and 10 have a compact shape that is positioned inside the outer diameter of the drum 7. It is comprised so that the malfunction which deform | transforms a support bracket can be prevented.
Here, in this embodiment, the split pin 12 is used as an integration means for integrating the first and second leg pieces 9b and 10b and the second connecting member shaft portion 10e with the fixed shaft support portion 2b. As shown in FIG. 8B, a configuration using bolts 14 and nuts 4a instead of the split pins 12 may be adopted.

In this structure, the first and second connecting members 9, 10 are provided inside the outer diameter of the drum 7 constituting the winding device 3, and can protrude from the outer diameter of the drum 7. It is set not to. For this reason, even if the shutter curtain 1 connected to the drum 7 has a left-right width close to the support bracket 2a, similarly to the shutter curtain used in the manual shutter device, it is wound around the winding device 3. The shutter curtain 1 thus made does not interfere with the first and second connecting members 9, 10, so that when the manual type is replaced with the electric winding device 3, not only the support bracket 2 a but also the shutter The curtain 1 and the guide rail 4 for moving and guiding the shutter curtain 1 can be used as they are, and the construction for changing from the manual type to the electric type is further simplified.
The wiring 5g drawn from the electric motor 5a is drawn from the outer peripheral surface of the electric motor one end portion 5c, and is drawn to the outside through a through hole 2c opened in the right support bracket 2a. The extracted wiring 5g is connected to a repeater 13 provided on the right side surface of the shutter case 2 (one end side surface of the right support bracket 2a), and the wiring 13a drawn from the repeater 13 is not shown. The wiring 5g is configured to be drawn inside the inner diameter of the drum 7 in this case.
Incidentally, the lead-out of the wiring 5g of the electric motor 5 forms a through-hole communicating with the shaft hole of the second connecting member shaft portion 10e in the first connecting member motor fixing piece 9a and the second connecting member base piece 10a. However, it is also possible to configure such that it is drawn out from the through hole through a drawing hole formed inside the U-shaped fixed shaft support portion 2b of the support bracket 2a.

  In the embodiment of the present invention configured as described above, when the manual shutter device is replaced with the electric shutter device, the electric motor unit 5 side of the electric winding device 3 is the electric motor unit. 5 is provided on the support bracket 2a side, and the second leg piece 10b along the fixed shaft support portion 2b is provided with the first connecting member 9 provided with the first leg piece 9b along the fixed shaft support portion 2b. By being connected to the formed second connecting member 10, the support bracket 2 a is configured to be supported and fixed. In this case, the first and second connecting members 9 and 10 are formed from the outer diameter of the drum 7. Also, the first and second connecting members 9 and 10 do not protrude from the outer diameter of the drum 7. For this reason, the first and second connecting members 9 and 10 are positioned inside the winding shape of the shutter curtain 1 wound around the drum 7, so that the left and right width of the shutter curtain 1 is set to a manual shutter device. The shutter curtain 1 wound around the drum 7 interferes with the first and second connecting members 9 and 10 even when the length is close to the support bracket 2a as in There is no possibility that the shutter curtain 1 cannot be wound around the second connecting members 9 and 10. As a result, not only the existing support bracket 2a in which the fixed shaft support portion 2b is formed, but also the shutter curtain 1 and the guide rail 4 can be used as they are in the manual type. The replacement work to the formula can be performed more easily.

And in this thing, the latching piece 9c of the 1st connection member 9 was latched by the base piece 10a of the 2nd connection member 10 provided in the support bracket 2a side, and it was distribute | arranged along the fixed-shaft support part 2b. The first and second leg pieces 9b and 10b are integrally connected to the fixed shaft support portion 2b, so that the support bracket 2a on the electric motor unit 5 side is supported and fixed. The first and second connecting members 9 and 10 can be used as members for connecting, and the first and second connecting members 9 and 10 can be reliably connected without using a separate connecting member. .
Further, the first and second connecting members 9 and 10 are such that the first and second leg pieces 9b and 10b are connected to the fixed shaft support portion 2b via an integrated means such as a split pin 12, and the winding device 3 acts on the support bracket 2a from the second connecting member 10, and the load is a connecting portion between the support bracket 2a and the second connecting member 10, and a connecting portion between the bracket fixing piece 10c, Acts on the support bracket 2a in a state of being dispersed by the connecting portion of the second leg piece 10b and the fixed shaft support portion 2b via the split pin 12, and the first and second connecting members 9, 10 Even if it is made compact so as to be smaller than the outer diameter of the drum 7, the load is not concentrated and the strength is increased without any special reinforcement of the support bracket 2a. 2a is deformed Can avoid various problems.
Moreover, since the second connecting member 10 is provided with a shaft portion 10e that is fitted and supported by the fixed shaft support portion 2b, the second connection member 10 is fixed to the support bracket 2a with the shaft portion 10e as a reference. The member 10 can be positioned with respect to the support bracket 2a, the winding device 3 can be installed with high accuracy, and the load received by the second connecting member 10 is determined by the shaft portion 10e and the fixed shaft support portion 2b. The fitting support portion having a large contact area can be received, and the load distribution to the support bracket 2a can be more effectively distributed.

The present invention is Ru course der shall not be limited to these embodiments.
FIG. 9 shows a reference example.
The thing of the said reference example becomes the structure similar to said 1st Embodiment except the connection member 15 for supporting the one end side part of the winding device 3 to the support bracket 2a, and the same The description of the configuration is omitted by attaching the same reference numerals as those in the first embodiment.
The connecting member 15 of the reference example includes a bracket fixing piece 15a fixed to the right support bracket 2a, a pair of indoor / outdoor leg pieces 15b extending indoors and out of the fixed shaft support portion 2b, and these leg pieces. 15b is connected to the other end side of the right support bracket 2a and is parallel to the bracket surface of the right support bracket 2a. The base piece 15c is provided integrally with the base piece 15c, and is secured to one end side 5c of the electric motor. Motor fixing piece 15d fitted in a shape, and a shaft portion 15e protruding toward one end side from the base piece 15c and fitted and supported by the fixed shaft support portion 2b of the support bracket 2a. And also in this thing, the base piece 15c is set to the other end side of the fixed axis | shaft support part 2b of the support bracket 2a by setting the leg piece 15b longer than the left-right direction length of the fixed axis support part 2b of the support bracket 2a. It is configured so that the shaft portion 15e is fitted and supported on the fixed shaft support portion 2b, and the support bracket 2a used in a manual manner can be used as it is.
Here, the motor fixing piece 15d includes a bottomed cylindrical fitting portion 15f that is fitted to the one end side portion 5c of the electric motor 5a, and a plurality of circumferential directions formed on the outer circumferential surface of the electric motor one end side portion 5c. A plurality of claw portions 15g that are respectively fitted into the recesses 5h located between the projections 5d, and the electric motor one end side portion 5c is pushed into the fitting portion 15f in a state in which the claw portions 15g are elastically deformed. Thus, the electric motor one end side portion 5c is configured to be fitted to the motor fixing piece 15d. In this state, the claw portion 15g is fitted between the projections 5d, so that the motor fixing piece 15d and The electric motor one end side portion 5c is configured to be prevented from rotating.

  The connecting member 15 is fixed to the right support bracket 2a in advance, and the electric motor one end side portion 5c protruding from the one end side of the drum 7 of the winding device 3 is fitted to the motor fixing piece 15d, whereby the electric motor The unit 5 is configured so as to be supported and fixed to the support bracket 2a, and easily and easily from the manual winding device to the electric winding device 3 without replacing the support bracket. It is configured to be replaced. In this case, it is preferable to provide a retaining means between the connecting member 15 and the electric motor one end side portion 5c. As the retaining means of the present embodiment, a notch portion formed in the claw portion 15g. The connecting member 15 (motor fixing piece 15d) is connected to the electric motor by fitting a retaining ring 16 having elasticity into 15h and a recess 5h formed at the top of the protrusion 5d of the electric motor one end side portion 5c. It is configured to be prevented from coming off from the one end portion 5c.

And since the connection member 15 is formed so that it may be located inside the outer diameter of the drum 7 as in the first embodiment, not only the support bracket 2a but also the shutter curtain and guide rail. Since the manual type can be used as it is, the change from manual type to electric type can be further facilitated, and the shaft portion 15e is fitted and supported by the fixed shaft support portion 2b. The winding device 3 can be installed with high accuracy, and the load acting on the support bracket 2a is distributed, so that the connecting member 15 can be made compact without reinforcing the support bracket 2a.
In this case, the base piece 15c and the fitting portion 15f are provided with a through hole 15i communicating with the cylindrical hole of the shaft portion 15e. The wiring 5g of the electric motor 5a is connected to the cylindrical hole and the through hole 15i. Through the support bracket 2a.
The shape of the electric motor is not limited to that of the first embodiment . For this reason, the motor fixing piece formed on the connecting member needs to be configured to prevent rotation in accordance with the shape of one end of the electric motor. In this case, the protrusion that prevents rotation on the one end of the electric motor. In such a case, a locking piece is provided on the motor fixing piece side, and a locking receiving piece is formed on the motor fixing piece side to lock the locking piece from the circumferential direction. .

It is a perspective view of the shutter device changed from manual type to electric type. 2A and 2B are a side view and a front view of the support bracket, respectively. It is the top view which notched some explaining the support state to the support bracket of a winding apparatus. 4A and 4B are a front view and a side view of the electric motor, respectively. 5A, 5B, and 5C are a plan view, a side view, and a front view, respectively, of the first connecting member. FIGS. 6A and 6B are a plan view and a side view, respectively, illustrating a state where the first connecting member is attached to the electric motor. 7A, 7B, and 7C are a plan view, a side view, and a front view of the second connecting member, respectively. FIGS. 8A and 8B are plan views in which a part of the winding device is enlarged. 9A and 9B are a side view and a plan view, respectively, of the connecting member of the reference example . It is the top view which expanded a part of winding device in a reference example .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Shutter case 2a Support bracket 2b Fixed shaft support part 3 Winding device 5 Electric motor unit 6 Fixed shaft unit 7 Drum 8 Drive wheel 9 First connection member 9b First leg piece 9c Locking piece 10 Second connection member 10a Base piece 10b Second leg piece 10e Shaft part 12 Split pin

Claims (2)

A fixed shaft for rotatably supporting the drum ; and a support bracket having a fixed shaft support portion for fixing and supporting the fixed shaft projecting inward in the left-right direction. The support bracket includes a manual winding device configured to fix and support the fixed shaft to the fixed shaft support portion by inserting a bolt into a through hole formed in the support portion so as to penetrate in the indoor / outdoor direction and tightening the nut. In an open / close device that has been changed from a manual type to an electric type by replacing the electric type with an electric motor unit in which an electric motor unit is relatively rotatably mounted at one end of the drum, along one end side of the electric motor unit which projects from the left and right direction end of the drum, when supported via a consolidated member fixed to the remaining support bracket, said connecting member, the indoor and outdoor fixed shaft support member It arranged Te, comprising a leg that is provided is located inside the outer diameter of the drum, which through holes corresponding to the through hole forming the fixed shaft support portion leg pieces are formed, The electric motor unit is a connecting member formed by integrated means inserted through through holes formed in the leg piece and the fixed shaft support portion in a state where the leg pieces and the fixed shaft support portion of the connecting member are laminated in the indoor and outdoor directions, respectively. The winding device in the switchgear for construction characterized by being fixedly supported by the support bracket via the . The connecting member is fixed to one side surface of the electric motor unit , and includes a leg piece that extends along the fixed shaft support portion. The leg piece is formed with a through hole corresponding to the through hole formed in the fixed shaft support portion . And a second connecting member that includes a leg piece that is fixed to the support bracket and extends along the fixed shaft support portion, and a through hole corresponding to the through hole formed in the fixed shaft support portion is formed on the leg piece. The electric motor unit is formed through each leg piece and the fixed shaft support portion in a state where the leg pieces and the fixed shaft support portion of the first and second connecting members are laminated in the indoor and outdoor directions, respectively. 2. The winding device in the switchgear for building according to claim 1, wherein the winding device is fixedly supported on the support bracket via the first and second connecting members by the integration means inserted through the hole .

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