JP2009057813A - Supporting structure of opening/closing device of sheet shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing device having a clearance in a mounting bracket for absorbing bending moment, in view of the problem that an opening/closing device having a built-in driving motor at an end of a wind-up drum is fixed to a wall surface by a mounting bracket exposed to the outside with an output shaft serving as a bearing by employing an output shaft of the driving motor inserted therein as a driving point and the size is enlarged to enhance the rigidity because the wind-up drum is supported by the whole length of the mounting bracket resulting in large bending moment. <P>SOLUTION: A fixed rotary flange 5 is provided on an inner peripheral surface of the wind-up drum 3. A reduction gear 7 for reducing the speed of rotation of the driving motor 8 is engagingly fitted to the rotary flange 5. The reduction gear 7 is fixed by the mounting bracket 12 which is fixed to a frame 16 fixed to a wall surface K of a ceiling part T. The opening/closing device 4 is formed using the reduction gear 7 as the bearing B of the end of the wind-up drum 3, and the driving motor 8 is fitted to the reduction gear 7 later. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is an opening / closing device that winds up and rewinds a sheet disposed on the ceiling portion of the opening, and closes or opens the opening. The opening / closing of the opening / closing device is light and easy to install, and is small and strong. It is related with the support structure which can be performed.

In the conventional sheet shutter, the take-up drum is pivotally attached to the ceiling portion so that the sheet can be taken up, and is driven and rotated by being supported by a mounting bracket built in the take-up drum. The mounting bracket is a cylindrical body having a fixing portion that is fixed to a wall surface. A driving motor is attached to the tip of the cylindrical body, and the driving motor is attached to a rotating flange fixed to the inner peripheral surface of the winding drum. Inserted as possible. The mounting bracket is supported by the entire length from the fixed portion fixed to the wall surface to the output shaft of the drive motor, transmits the rotating flange to drive, rotates the take-up drum using the drive motor as a drive source, and the seat The opening was opened and closed by rolling up and rewinding.
In addition, the mounting structure of the electric switch disclosed in another publication is configured to apply a bending moment to the mounting bracket, so that the load applied to the speed reducer can be reduced.

  Japanese Patent No. 2586979   Japanese Patent No. 3595927

  However, since the rotation of the winding drum of Patent Document 1 is inserted by the length of the cylindrical body of the holding cover from the fixed portion of the wall surface, and the rotation is supported and transmitted by the drive motor at the tip of the cylindrical body, If the distance from the fixed part to the tip part is long and the accuracy of eliminating the run-out between the winding drum and the drive motor is not increased, there is a disadvantage that the winding drum does not rotate smoothly. Furthermore, the rotation of the take-up drum cannot be improved at the construction site, and a bending moment only for the length of the holding cover acts on the fixed part of the wall, so it is enlarged using a holding cover with increased strength. The weight and the price increased, and the vibration and noise were suppressed by rotating at low speed.

Further, in the electric switch of Patent Document 2, a bending moment is applied to a strong mounting bracket fixed to the housing so that a large load is not applied to the bearing of the electric switch.
The present invention relates to a mounting bracket that is inserted into the inner peripheral surface of a winding drum, one end of the mounting bracket is fixed to a wall surface, and the other end is used as a bearing for the winding drum. Is formed by adopting accurate precision and tools in the factory. The switchgear is a lightweight reduction gear that does not have a drive motor precisely formed at the factory, and is installed on the ceiling at the construction site. It is to provide.

  According to the first aspect of the present invention, there is provided a seat opening / closing machine in which a winding drum having a built-in drive motor is disposed on the ceiling of the opening, and the sheet is moved up and down by rotation of the winding drum. A rotating flange is fixed inside the winding drum. A reduction gear fixed by a mounting bracket is fitted to the rotating flange. The mounting bracket is fixed to the frames on the wall surfaces on both sides of the ceiling portion to form a switch that serves as a bearing at one end. The bearing speed reducer is configured by connecting a drive motor that is placed on the frame after the switch is installed.

In the invention of claim 2, the mounting bracket of the switchgear of claim 1 is a cylindrical body fitted to the outer peripheral surface of the speed reducer. The cylindrical body is configured to have a gap in the longitudinal direction.
In the invention of claim 3, the outer peripheral surface of the cylindrical body of claim 2 is provided with a plurality of insertion holes through which a tool is inserted.

In the structure of claim 1, since the opening and closing machine is divided and installed, the weight can be reduced and assembled, and since it is fixed accurately in the factory, the bearing of the winding drum can be strengthened, and there is an effect that the vibration can be reduced and the size can be reduced. is there.
In the structure of Claim 2, the gap | interval of a cylindrical body has the effect | action of the shock absorbing material which can absorb loads, such as an impact.
In the configuration of the third aspect, it is possible to perform an attaching operation of retrofitting the drive motor in the cylindrical body, and there is an effect that the inside is cooled by the through hole and the weight of the member is reduced.

  According to the first aspect of the present invention, accurate centering work can be assembled at the factory and then installed on the site. High-speed rotation can be achieved by accurate shaft work, which can reduce vibration and noise. Since it is retrofitted after installation, it can be installed in a lightweight state, and there is an effect of facilitating and speeding up work on site by reducing the weight.

  In the invention of claim 2, since the gap provided in the mounting bracket is twisted to absorb the stress and reduce the shock, a large load is not applied to the speed reducer and the fixing plate. There exists an effect which can be made into a small and lightweight drive part.

  According to the third aspect of the present invention, it is possible to easily attach and tighten the drive motor disposed in the cylindrical body from the outside and to cool down the heat generated by the drive motor.

The opening / closing machine 4 according to the present invention is supported by a bearing B2 that is inserted into and fitted in a mounting bracket 12 having a speed reducer 7 in the winding drum 3, and is reduced in size by reducing the support strength. It is the drive part 14 built in the winding drum 3 which makes a low noise and enables high speed rotation.
Referring to the drawings, the present invention will be described with reference to FIG. 1. FIG. 1 includes a floor surface R on a ceiling portion T and a ground surface GL, and there are passages covered with wall surfaces K on both sides. The opening / closing machine 4 that opens and closes by the lifting operation is installed on the ceiling T. In the opening / closing machine 4, the winding drum 3 is attached to the bearings B 1 and B 2 of the wall surfaces K on both sides, and the sheet 2 is wound around the winding drum 3.

  The sheet 2 is lightweight, made of resin or cloth, and is abundant from transparent to colored. By hanging the ceiling 1 from the ceiling T and closing the opening 1 to the floor surface R, temperature and humidity・ Can easily block dust, light, wind, traffic, etc. The opening 1 is provided with a seat 2 suspended from the ceiling T, and guide rails 19 erected along both side wall surfaces K support the side surfaces of the seat 2 to guide the ascending and descending. One end of the end surface of the winding drum 3 is supported by being attached to the bearing B2 of the wall surface K, and the other end is fixed to the wall surface K by the mounting bracket 12 of the switch 4, and the switch 4 serves as a bearing B1. I wear it. In the opening / closing operation, the seat 2 can be moved up and down by an operation switch (not shown), and the opening 1 can be closed, opened, or stopped halfway.

  FIG. 2 shows the drive unit 14 of the opening / closing machine 4, and the drive motor 8 is built in the winding drum 3 and is fixed to the wall surface K by a mounting bracket 12 protruding from the end surface of the winding drum 3. The drum 3 is pivotally supported. The take-up drum 3 is a cylindrical pipe material. A shaft protrudes from the center to the other end side and is rotatably attached to the wall surface K. One end of the take-up drum 3 is driven and controlled by a built-in drive motor 8, and the fixing plate 15 of the mounting bracket 12 is fixed to the wall surface K with bolts, and both ends of the take-up drum 3 can be driven and rotated in parallel. It is attached to.

The opening / closing machine 4 built in the winding drum 3 is fitted with a rotating flange 5 in which an output shaft 6 that is driven and rotated is fixed in the winding drum 3. The outer peripheral surface of the rotary flange 5 is fixed to the inner peripheral surface of the winding drum 3, and the output shaft 6 having the same shape by spline serration or the like can be fitted to the center portion, and is fixed by a push plate 17. The speed reducer 7 is provided with a mounting bracket 12 on the outer peripheral surface, and is supported by a second bearing B <b> 2 that is fixed to the wall surface K from the inside of the winding drum 3.
The speed reducer 7 drives and rotates the rotary flange 5 by shifting the rotation of the drive motor 8 to a high torque rotation. The drive motor 8 is provided with an in-row surface 22 that can be connected to the speed reducer 7 by arranging the motor shaft 10 in the center, and the appearance is covered with a motor frame having a diameter smaller than the diameter of the speed reducer 7.

  In the motor shaft 10, a pinion having a tooth surface on the speed reducer 7 side meshes with a gear and can input rotation. On the end surface side of the motor shaft 10, the rotation of the motor shaft 10 can be supported, and a control command for braking and releasing the rotation is wired by the cable 20, and the opening 1 is opened and closed by the lifting operation of the seat 2. A brake 11 is supported which performs an operation and a stop operation by a braking action. The motor frame of the drive motor 8 is connected to the speed reducer 7 and has a coil as a stator of the motor, the inside of the mounting bracket 12 being attached to and detached from the motor frame so as to be movable. The mounting bracket 12 is fixed to the wall surface K with a flat fixing plate 15 as a base surface in the vertical direction by bolting, and is connected to a cylindrical body 9 which is a cylindrical frame body having a space inside. The bearing B2 that supports the drum 3 is used.

  In FIG. 3, the opening / closing machine 4 is assembled to the opening 1, and the drive motor 8 is first mounted on the mounting bracket 12 fixed place of the ceiling T. The bearings B at both ends of the winding drum 3 whose centering is accurately adjusted at the factory are sent as a first bearing B1 and a second bearing B2 fixed to the left and right of the wall surface K. The space between the wall surfaces K of the ceiling T is a wide space, and is adjusted and fixed to an appropriate dimension by the frame 16. At this time, the drive motor 8 is not yet attached to the mounting bracket 12 and is light in weight and can be easily fixed via the bearing B.

  The rotary flange 5 and the output shaft 6 of the speed reducer 7 are firmly coupled, and a mounting bracket 12 fixed to the outer periphery of the speed reducer 7 extends from the end surface of the take-up drum 3 and is fixed to the frame 16 of the wall surface K. Two bearings B2 are supported. The drive motor 8 is disposed at the mounting position of the mounting bracket 12 of the frame 16 before the mounting bracket 12 is mounted. The drive motor 8 is disposed on the input side to the speed reducer 7 by the gap 13 and the insertion hole 21 provided in the winding drum 3. It is made to approach the provided in-row surface 22. The inrow surface 22 is guided so that the outer peripheral surface is tapered and the pinion of the drive motor 8 meshes with the gear of the speed reducer, and is fixed by the tightening bolt 18.

  The drive motor 8 includes a cord for extending the cable 20 and is connected to a control line wired on the wall surface K. The cable 20 is supplied with a signal and electric power via a control panel according to a command from the operation panel, and brakes and releases the brake 11 and causes the drive motor 8 to perform forward and reverse operations. The speed reducer 7 is precisely processed and assembled at the factory, and the output shaft 6 is accurately fixed to the rotating flange 5 without vibration, and the shaft center of the winding drum 3 can be rotated. The mounting bracket 12 is fixed to the outer peripheral surface of the speed reducer 7 and is firmly provided as the second bearing B2 of the take-up drum 3, and is fixed so as to be smoothly rotatable.

FIG. 4 shows the mounting bracket 12, which is composed of a cylindrical body 9 that is inserted into the winding drum 3 and a fixing plate 15 that is disposed on the end surface of the winding drum 3 and is fixed to the frame 16. The cylindrical body 9 is made of a metal material, made of a circular aluminum plate, has a width of several tens of millimeters, has a gap 13 in its entire length, and inserts a tool such as a spanner, driver, or pliers on the outer peripheral surface so that it can be rotated even slightly. The hole 21 is provided in several places, and the drive motor 8 can be fixed to the speed reducer 7 with the tightening bolt 18. The insertion hole 21 reduces the weight, increases rigidity, and is optimal for releasing the heat generated by the drive motor 8. It is.
One end of the cylindrical body 9 is fixed to the outer peripheral surface of the speed reducer 7 with a plurality of bolts, and the other end is fixed to the fixing plate 15 with a plurality of bolts. The fixed plate 15 is fixed to the frame 16 to fix the cylindrical body 9 to the speed reducer 7 in the take-up drum 3 and to support it as the second bearing B2.

  FIG. 5 shows that when the opening / closing device 4 rolls up the seat 2, a large load is concentrated on the output shaft 6 and a bending moment is applied to the reduction gear 7, but the cylindrical body 9 that supports the reduction gear 7 absorbs the bending moment. Twist to narrow the gap 13 and release the stress. The bending moment is generated when the drive motor 8 is started and stopped, and requires a highly rigid reduction gear 7. However, if the rigidity is increased, the reduction gear 7 becomes larger and the inner diameter of the winding drum 3 becomes larger. Has the disadvantage of increasing the size. Since the mounting bracket 12 of the present invention is provided with the gap 13 in the longitudinal direction, it is twisted in the circumferential direction when an overload is applied, so that the equal interval of the gap 13 is deformed so that the cylindrical body 9 absorbs the load. The transmission of the bending moment to the speed reducer 7 and the fixed plate 15 is interrupted by eliminating the elasticity.

(Explanation of opening and closing operation)
When the seat 2 that is closing the opening 1 is raised, the drive motor 8 is turned on by a command from an operation panel (not shown) or a detector provided on the front wall K, and the drive torque is applied to the motor shaft 10. Is generated. The motor shaft 10 is in a braking state by the brake 11, but when the power enters the brake 11 and releases the braking with a slight delay from the power of the motor frame 9, the motor shaft 10 starts rotating and is input to the speed reducer 7. The reducer 7 receives a large starting torque on the outer peripheral surface, but transmits a driving force from the output shaft 6 without applying a large load to the internal gear by moving the stress as a bending moment to the mounting bracket 12. Can do.

The speed reducer 7 is rotated by fixing the output shaft 6 obtained by changing the high rotation of the drive motor 8 to the low rotation to the rotation flange 5 so as not to be shaken by the push plate 17. The rotating flange 5 is fixed to the inner peripheral surface of the winding drum 3 and functions as a second bearing B <b> 2 that supports the winding drum 3.
The second bearing B <b> 2 can firmly support the shaft center by the fixing plate 15 of the mounting bracket 12 and the cylindrical body 9. The cylindrical body 9 can be extinguished by absorbing the bending moment generated by clockwise, counterclockwise, starting rotation, rotation stop, sudden stop, etc. of the winding drum 3 by the twist of the gap 13.

  Since a large load is not applied to the second bearing B2, the entire bearing can be reduced in size, vibration, noise and deflection can be reduced, and the rigidity is further increased and vibration and noise are reduced. Since it becomes B, the number of rotations can be increased, and the opening / closing time can be shortened by quietly increasing the lifting / lowering speed of the seat 2. The winding drum 3 is supported by a first bearing B1 and a second bearing B2 which are bearings B at both ends, and transmits driving and braking power by a rotating flange 5, and closes the opening 1 on the outer peripheral surface. The sheet 2 is wound, and the sheet 2 is moved up and down by rotating.

  The winding drum 3 is supported at both ends via the first bearing B1 and the second bearing B2 of the bearing B, and is fixed to the wall surface K to be rotatable. In order to fix the bearing B, the winding drum 3 is raised to the fixing position horizontally and fixed to the wall surface K and the frame 16 with bolts or the like. In the second bearing B2, the drive motor 8 is retrofitted. Therefore, it is lightweight and can be easily lifted horizontally. The outer peripheral surface of the cylindrical body 9 is provided with an insertion hole 21 that is a plurality of elongated holes, and the mounting bracket 12 is attached to the frame 16 so as to cover the drive motor 8 that has been waiting on the frame 16 of the wall surface K in advance. It is fixed to.

  When the drive motor 8 is assembled to the speed reducer 7, a tool is inserted through the insertion hole 21, the motor shaft 10 is connected to the inrow surface 22 of the speed reducer 7, and the tightening bolt 18 is screwed and fixed. In order to prevent foreign matter from entering the speed reducer 7, a cap or the like is covered in the hole of the connecting portion of the motor shaft 10. Therefore, the cap is removed and the drive motor 8 is attached and sealed.

  The front view which shows an opening part.   Sectional drawing explaining the structure of an opening / closing machine.   Sectional drawing for description of attaching a drive motor to the reduction gear of a mounting bracket later.   The perspective view explaining a mounting bracket.   The perspective view which shows a mounting bracket when a big load is applied to a drive part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening part 2 Sheet | seat 3 Winding drum 4 Opening / closing machine 5 Rotary flange 6 Output shaft 7 Reduction gear 8 Drive motor 9 Motor frame 10 Motor shaft 11 Electromagnetic brake 12 Mounting bracket 13 Drum sliding surface 14 Sliding body 17 Support frame 20 Fixing part 21 Cylindrical part 22 Inner joint K Wall surface B Bearing

Claims (3)

A sheet that opens and closes at the opening, a winding drum that winds the sheet is disposed on the ceiling, a drive motor that rotates the winding drum is built in, and the sheet is raised and lowered by the rotation of the drive motor In switchgear,
The winding drum is provided with a fixed rotation flange on the inner peripheral surface thereof, and a reduction gear for reducing the rotation of the drive motor is fitted to the rotation flange, and the reduction gear is fixed by a mounting bracket, and the attachment The bracket is fixed to a frame fixed to the wall surface on both sides of the ceiling, and the speed reducer is formed as a bearing at one end of the take-up drum to form a switch, and the drive motor is retrofitted to the speed reducer. Support mechanism for opening and closing the seat shutter.   2. The opening / closing support structure for a seat shutter according to claim 1, wherein the mounting bracket is a cylindrical body fitted to an outer peripheral surface of the speed reducer, and the cylindrical body has a gap in a longitudinal direction.   2. The opening / closing support structure for a sheet shutter according to claim 1, wherein a plurality of through holes for insertion of a tool are arranged at a plurality of positions on the outer peripheral surface of the cylindrical body.

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