JP2006104807A - Screen body winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a first clearance between one side edge on the electric motor side of window frame and one side edge of a screen body, and to reduce the difference between the first clearance and a second clearance between the other side edge of the window frame and the other side edge of the screen body. <P>SOLUTION: A winding roller 2 for winding the screen body comprises a shaft body 21 interlockingly connected to an output shaft 31 of the electric motor 3 disposed outward in the axis direction of the winding roller 2, and having projecting strips 26 in a plurality of circumferential positions; a cylindrical body 22 having engaging grooves 27 engaged with the projecting strips 26, and detachably fitted to the shaft body 21; and a cylindrical loose fitting part 23 formed integrally with the cylindrical body 22 and loosely fitted around the outside of the electric motor 3. The screen body A can be wound around the outside of the electric motor 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a curtain body hoisting device for winding a curtain body such as a curtain or a projection screen so that the curtain body can be lowered.

  The curtain hoisting device includes an electric motor and a hoisting roll that is linked to the output shaft of the electric motor and winds up the curtain body. By rotating in the direction, the curtain body is wound up while being wound around the hoisting roll, and the curtain body is lowered by rotating the electric motor in the other direction (for example, Patent Document 1).

In this way, the electric curtain body hoisting apparatus having the electric motor and the hoisting roll uses a curtain body having the same width as the entire length of the hoisting roll, and the curtain body protrudes from both ends of the hoisting roll. In order to prevent the curtain from being loosened, the curtain is tensioned over the entire width.
JP 2004-225489 A

  However, in the electric curtain body hoisting device, an electric motor is disposed outside one end of the hoisting roll, and the curtain body is not wound around the outer periphery of the electric motor. Since the curtain is wound only around the outer periphery of the hoisting roll, when the curtain hoisting device is attached to the inner upper part of the window frame, it is between the one side edge of the window frame and the one side edge of the curtain body. The first gap is much larger than the second gap between the other side edge of the window frame and the other side edge of the window frame, the shielding rate of the window by the curtain body is poor, and the appearance is poor, and an improvement measure is desired. It had been.

  The present invention has been made in view of such circumstances, and a main object of the present invention is to make the winding roll have a cylindrical loosely fitted portion that is loosely fitted around the outer periphery of the electric motor, thereby providing an electric motor for a window frame. The first gap between the one side edge and the one side edge of the curtain body can be reduced, and the difference between the first gap and the second gap can be reduced. To provide an apparatus.

  Another object is to have a structure in which the hoisting roll has a shaft body that is interlocked and connected to the output shaft, and a cylinder body that is removably fitted to the shaft body and is provided with a cylindrical loose fitting portion. Thus, an object of the present invention is to provide a curtain hoisting device capable of improving the assembling workability of the hoisting roll having the cylindrical loose fitting portion.

  Another object of the present invention is to provide a curtain body hoisting device which can easily obtain a hoisting roll having no step on the peripheral surface by integrally forming the cylindrical loosely fitting portion and the tubular body and forming them integrally. There is.

  Another object is to provide a protruding strip on the outer periphery of the shaft body, and to provide an engagement groove for engaging with the protruding strip on the cylindrical body so that it can be loosely fitted around the outer periphery of the electric motor. It is an object of the present invention to provide a curtain hoisting device that can reduce the size of the hoisting roll.

  A curtain body hoisting device according to a first aspect of the present invention is disposed on a hoisting roll for winding up the curtain body and on the outer side in the axial direction of the hoisting roll, and its output shaft is linked to the hoisting roll. In the curtain hoisting apparatus including the electric motor, the hoisting roll has a cylindrical loose fitting portion that is loosely fitted around an outer periphery of the electric motor.

  In the first invention, the hoisting roll has a cylindrical loose fitting portion, and this tubular loose fitting portion is loosely fitted around the outer periphery of the electric motor. Can be wound around the outside. Therefore, when the curtain hoisting device is attached to the inner upper part of the window frame, the first gap between the one side edge of the window frame on the electric motor side and the one side edge of the curtain body can be reduced, Further, the difference between the first gap between the one side edge of the window frame and the one side edge of the curtain body and the second gap between the other side edge of the window frame and the other side edge of the curtain body can be reduced.

  The curtain hoisting apparatus according to a second aspect of the present invention is the curtain hoisting device according to the first aspect, wherein the hoisting roll is fitted to the shaft body so as to be interlocked with the output shaft, and is removably fitted to the shaft body. And a cylindrical body integrally provided with a loose fitting portion.

  In the second invention, the cylindrical loosely fitting portion can be loosely fitted around the outer periphery of the electric motor by fitting the cylindrical body into the shaft body.

  The curtain hoisting device according to a third aspect of the invention is characterized in that, in the second aspect of the invention, the cylindrical loose-fitting portion and the cylindrical body have substantially the same diameter and are integrally formed.

  In the third invention, there is no step on the peripheral surface, and it is possible to easily obtain a hoisting roll having a size that can be loosely fitted around the outer periphery of the electric motor.

  The curtain body hoisting device according to a fourth aspect of the present invention is the second aspect or the third aspect, wherein the shaft body has a protruding strip projecting radially outward from a plurality of circumferential positions, The cylinder has an engaging groove that engages with the protruding strip.

  In the fourth aspect of the invention, the space between the peripheral surfaces of the hoisting roll shaft body and the cylinder can be made hollow, and the hoisting roll having a size that can be loosely fitted around the outer periphery of the electric motor can be reduced in weight. it can.

  According to the first invention, since the first gap between the one side edge of the window frame on the electric motor side and the one side edge of the curtain body can be reduced, the shielding rate of the window by the curtain body can be increased. . In addition, the difference between the first gap between one side edge of the window frame and one side edge of the curtain body and the second gap between the other side edge of the window frame and the other side edge of the curtain body can be reduced. The appearance when the curtain is shielded can be improved.

  According to the second aspect of the present invention, the cylindrical loosely fitting portion can be loosely fitted around the outer periphery of the electric motor by fitting the cylindrical body into the shaft body, so that the hoisting roll having the cylindrical loosely fitting portion is assembled. Workability can be improved and costs can be reduced.

  According to the third aspect of the present invention, it is possible to easily obtain a hoisting roll having a size that does not have a step on the peripheral surface and can be loosely fitted around the outer periphery of the electric motor.

  According to the fourth invention, the space between the peripheral surfaces of the shaft body and the cylindrical body can be made hollow, and the hoisting roll having a size that can be loosely fitted around the outer periphery of the electric motor can be reduced in weight.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. 1 is a cross-sectional plan view showing the configuration of a curtain hoisting device according to the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

  This curtain hoisting device includes a bowl-shaped frame 1 attached to a stationary object such as a window frame, a hoisting roll 2 rotatably supported between both ends of the frame 1, and the hoisting roll 2 is provided with a cylindrical electric motor 3 arranged outward in the axial direction of the core 2 and an attachment body 4 for attaching the frame 1 to a stationary object such as a window frame, and the output shaft 31 of the electric motor 3 is wound up. The roll 2 is connected to one end of the roll 2 via a transmission mechanism 5.

  The frame 1 has a saddle plate 11 whose inner surface facing the outer peripheral surface of the hoisting roll 2 is concavely concaved, and first and second flanges 12 and 13 connected to both longitudinal ends of the saddle plate 11 by machine screws. , And guide rails 14 and 15 projecting from both ends in the width direction of the cover plate 11. Two support rods 16 projecting parallel to the axis of the electric motor 3 and the output shaft 31 are fixed to the first flange 12, and a substantially U-shaped roll is provided at the tip of the support rod 16. The support 6 is fixed with a small screw and is integrated with the flange 12.

  One end of the fixed shaft 7 is fixed to the second flange 13 with a small screw, and the other end of the hoisting roll 2 is supported on the fixed shaft 7. A coil spring 8 is wound around the fixed shaft 7 as a winding spring that urges the winding roll 2 in the winding direction. The coil spring 8 has one end locked to the fixed shaft 7 and the other end locked to the hoisting roll 2, and is configured to assist the electric motor 3 in rotating in the hoisting direction of the hoisting roll 2. ing. That is, when the hoisting roll 2 rotates in the direction of lowering the curtain body, the coil spring 8 is twisted by the load of the curtain body applied to the hoisting roll 2, and the elastic restoring force is gradually increased. When the body is rotated in the winding direction, the coil spring 8 is configured to assist the winding rotation by the electric motor 3 of the winding roll 2 by the elastic restoring force of the coil spring 8.

  The attachment body 4 is composed of a plate body having engagement portions 41 and 42 slidably engaged with the guide rails 14 and 15 and attachment holes, and a plurality of screws that are screwed to the engagement portion 42. Sliding is prevented by bringing the machine screw 9 into contact with the guide rail 15.

  The roll support 6 is spaced apart in the axial direction of the output shaft 31, and first and second shaft support plate portions 61, 62 each having two through holes 6 a, 6 b, and a shaft support plate portion 61. , 62, the output shaft 31 is supported in the through hole 6a of the first shaft support plate 61, and the drive gear 51 is fitted and fixed to the output shaft 31. Yes. A transmission shaft 53 having a driven gear 52 that meshes with the drive gear 51 is rotatably supported in the through holes 6 b of the first and second shaft support plate portions 61 and 62. The driving gear 51, the driven gear 52, and the transmission shaft 53 constitute the transmission mechanism 5.

  The hoisting roll 2 includes a cylindrical shaft body 21 disposed between the roll support 6 and the second flange 13, and a cylindrical tube body 22 that is removably fitted around the outer periphery of the shaft body 21. And a cylindrical loosely fitting portion 23 that is integrally formed of the cylindrical body 22 and an aluminum material and is loosely fitted around the outer periphery of the electric motor 3. First and second bearing members 24 and 25 having shaft holes are fitted and fixed to both ends of the shaft body 21, and the transmission shaft 53 cannot be relatively rotated in the shaft hole of the first bearing member 24. The fixed shaft 7 is fitted into the shaft hole of the second bearing member 25 so as to be relatively rotatable. Further, on the outer peripheral portion of the shaft body 21, protruding strips 26 that protrude radially outward from a plurality of circumferential positions are integrally formed of an aluminum material.

  The cylindrical body 22 and the cylindrical loosely fitting portion 23 are formed to have a larger diameter than the electric motor 3, and the cylindrical loosely fitted portion 23 can be loosely fitted around the electric motor 3 and the roll support 6. In addition, the cylindrical body 22 and the cylindrical loose-fit portion 23 are formed to have substantially the same diameter, and no step is generated between the cylindrical body 22 and the cylindrical loose-fit portion 23. Engaging grooves 27 that engage with the protruding strips 26 are provided over the entire length at the inner peripheral portions of the cylindrical body 22 and the cylindrical loose fitting portion 23 and at a plurality of circumferential positions. The cylinder 22 can be inserted into and removed from the shaft 21 by relatively moving the shaft 22 and the shaft 21 in the axial direction.

  FIG. 4 is a schematic view showing a use state. The curtain body hoisting device configured as described above is, for example, an attachment body on the inner upper side of a window frame in a state where the curtain body A is wound around the cylindrical body 22 and the cylindrical loosely fitting portion 23 of the winding roll 2. 4 is attached. In this case, the cylindrical loosely fitting portion 23 of the hoisting roll 2 is loosely fitted around the outer periphery of the electric motor 3, and the curtain body A can be wound around the outer periphery of the electric motor 3. The first gap C1 between the one side edge B1 on the electric motor 3 side and the one side edge A1 of the curtain body A can be reduced, and the shielding ratio of the window by the curtain body A can be increased. In addition, the first gap C1 between the one side edge B1 of the window frame on the electric motor 3 side and the one side edge A1 of the curtain body A, and the other side edge B2 of the window frame and the other side edge A2 of the curtain body A2. The difference from the second gap C2 can be made substantially equal, and the appearance when the curtain body A is shielded can be improved.

The hoisting roll 2 according to the embodiment described above has a configuration in which the cylindrical body 22 and the cylindrical loosely fitting portion 23 are integrally formed. In addition, the cylindrical loosely fitting portion 23 is integrally formed with the cylindrical body 22. The cylindrically-fitted portion 23 may be integrally formed with or integrally coupled with the shaft body 21.
In addition, the hoisting roll 2 has the configuration including the shaft body 21, the cylindrical body 22, and the cylindrical loose fitting portion 23. Also good. In this case, for example, bearing members are provided at both ends of the cylindrical body 22, one bearing member is supported to be able to transmit to the transmission shaft 53, and the other bearing member is rotatably supported to the fixed shaft 7.

  Further, the curtain hoisting device according to the present invention may include the electric motor 3 on one end side of the hoisting roll 2 and the electric motor 3 on both end sides of the hoisting roll 2.

It is a cross-sectional top view which shows the structure of the curtain winding apparatus which concerns on this invention. It is sectional drawing of the II-II line of FIG. It is sectional drawing of the III-III line | wire of FIG. It is the schematic which shows the use condition of the curtain winding apparatus which concerns on this invention.

Explanation of symbols

2 Winding roll 21 Shaft body 22 Tubular body 23 Cylindrical loose fitting portion 26 Projection strip 27 Engaging groove 3 Electric motor 31 Output shaft A Curtain body

Claims (4)

  In a curtain hoist apparatus comprising: a hoisting roll for hoisting the curtain body; and an electric motor that is arranged on the outer side in the axial direction of the hoisting roll and whose output shaft is interlocked with the hoisting roll. The curtain hoisting device is characterized in that the hoisting roll has a cylindrical loosely fitting portion loosely fitted around the outer periphery of the electric motor.   The hoisting roll includes a shaft body coupled to the output shaft, and a tubular body that is removably fitted to the shaft body and is integrally provided with the cylindrical loose fitting portion. Item 1. The curtain hoisting device according to Item 1.   The curtain hoisting device according to claim 2, wherein the cylindrical loosely fitting portion and the cylindrical body have substantially the same diameter and are integrally formed.   4. The shaft body has a protruding strip projecting radially outward from a plurality of circumferential positions, and the cylindrical body has an engaging groove that engages with the protruding strip. The curtain hoisting device described.

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