JPH103123A - Curtain raising/lowering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely wind/unwind a curtain in a short time. SOLUTION: A shaft 28 is disposed in such a manner that it is rotatably inserted through the center of a supporting member 12 on which wires for winding 16 are wound by a required number of turns, through bearing tools 30. Rollers 46 are rotatably fitted to a pipe 14 and the shaft 28 constituting the main body part of the supporting member 12, on both end parts of the shaft 28. Wires 26 each constituted in such a manner that the end part on one side is fixed on a fixing part 18 for hanging the curtain 12 and the other end part is connected to a take-up means 22 such as a motor are wound on the rollers 46. At the time of raising/lowering the supporting member 12, the wires 16 disposed on the pipe 14 and a pair of the wires 26 wound on the rollers 46 are wound or unwound by the take-up means 22. Thus, the curtain 12 can be safely wound and unwound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for elevating and lowering a curtain, and more particularly, to a device for winding up a curtain used for projection, in which a supporting portion and a winding portion of the curtain are separated. The present invention relates to a curtain elevating device configured to prevent the curtain from dropping and to safely wind up the curtain.

[0002]

2. Description of the Related Art Curtains are widely and generally used for projection. As shown in FIG. 10, the curtain 10 is formed by sticking a white cloth 13 coated with vinyl on a black cloth 11 coated entirely in black. A support member 12 formed longer than the width dimension by a required length is provided. The support member 12 has a pipe 14 made of steel or the like as a main body, and a flange having a slightly larger diameter than the support member 12 at both ends thereof as shown in FIG. 15 are attached. This support member 1
Wires 16, 16 used for raising and lowering the curtain 10 are provided at portions where both ends of the 2 project from the left and right ends of the curtain 10 by a required length. That is, the wire 1
Reference numerals 6 and 16 are made of a material having a strength enough to withstand the load of the curtain body 10, and one end thereof is
Is fixed at a required position on the peripheral surface of the pipe 14 and wound around the support member 12 by a length necessary for winding up the curtain 10, and then guided upward along the curtain 10. Have been.

A support shelf 18 is provided horizontally above the curtain 10, and a guide roller (hereinafter referred to as "first roller") is provided at a position where the support shelf 18 is located above both ends of the support member 12. , And a drive source (hereinafter referred to as “motor”) 22 such as a motor is provided on the upper surface of the support shelf 18. Also support shelf 1
8, another guide roller (hereinafter referred to as “second roller”) 2 is provided at a position facing the motor 22 with the curtain body 10 interposed therebetween.
4 are provided. Accordingly, the wires 16, 16 guided upward from both ends of the curtain 10 are wound around one side surface of the first rollers 20, 20, and are outside the second roller 24 (separated from the curtain 10). Are connected to the motor 22 after being wound from the side of the motor 22 respectively. In addition, as shown in the figure, from the position where each wire 16, 16 is wound around the second roller 24 to the position where it is connected to the motor 22,
Yorimodoshi 25 is connected. This Yorimodoshi 25
This prevents unnecessary twisting of the wires 16,16.

When the curtain 10 is stored, the wires 16, 16 wound around both ends of the support member 12 via the motor 22 are pulled up. As a result, the wires 16 are unwound and the support member 12 rises while rotating, so that the curtain body 10 is wound around the support member 12 as shown in FIG. When using the curtain 10, the curtain 10 is lowered via the wires 16, 16 and the support member 12 by rotating the motor 22 in the reverse direction. When the curtain body 10 is moved up and down, the left and right wires 16 and 16 are synchronously wound around and unwound from the support member 12, so that the support member 12 moves up and down while maintaining a horizontal state. It is configured to obtain. When the curtain 10 is lowered, the support member 12 also functions as a weight for holding the curtain 10 vertically.

[0005]

As described above, the wire 16 is wound around or unwound from the support member 12 disposed at the lower end of the curtain 10, whereby the curtain 10 is raised and lowered. You. The wires 16 and 16 themselves are configured so as not to easily slip off the support member 12 by the flanges 15 provided at both ends of the support member 12. However, in spite of the fact that there is, for example, a piano or a desk directly below the curtain 10, if the operator unintentionally lowers the curtain 10 without noticing them, the curtain 10
Will interfere with this obstacle and lose the balance. When the curtain body 10 is further lowered from this state, the wires 16 are loosened from the support member 12, but the unbalanced support member 12 suddenly drops from the obstacle. Has a wire 16,
There is a risk that the wires 16, 16 may fall off or be cut off from the support member 12 due to the impact, causing serious personal injury.

When the curtain body 10 is stored, the support member 12 is rotated as the wires 16 are pulled up, as described above. Because it is located at the lower end portion of the curtain 10, there is also a fear that when a person other than the operator approaches the curtain body 10 carelessly, a part of the clothes or the like may be caught in the rotating support member 12. You. In this regard, the reality is that serious personal injury has occurred in the past.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention has been proposed in order to solve the above problem suitably. It is another object of the present invention to provide a curtain elevating device capable of safely and unwinding in a short time.

[0008]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended purpose, the present invention provides a curtain mainly used for projection and a required length longer than the width of the curtain. The main body is a pipe formed as long as it is, and a supporting member provided with the pipe on the back surface of the curtain, and both ends of the supporting member project from the left and right ends of the curtain by a required length, respectively. One end is fixed to a portion to be wound, and after a required number of turns are wound around the peripheral surface of the pipe, the other end is constituted by a wire connected to a drive source for winding, and the support is provided via the drive source. The wire wound near both ends of the member is pulled upward, thereby raising the support member while rotating the pipe, thereby winding the curtain around the pipe and reversing the drive source. By urging in the direction Is a curtain body lifting and lowering device that lowers the curtain body while winding the pipe around a pipe, and at positions along the axis of the pipe, shafts that respectively protrude from both ends of the pipe by a required length. A roller is rotatably supported via a bearing disposed inside the pipe, and a roller is rotatably inserted through the shaft at a position where the shaft protrudes from both ends of the support member. Further, from above the roller, a wire different from the wire wound around the peripheral surface of the pipe is wound around, one end of the wire is fixed to a required position, and the other end is connected to the drive source,
By pulling one of the wires wound around the roller via the drive source, the support member is lifted upward while being supported by the roller freely rotating with respect to the shaft. By pulling the wire wound around the pipe via the drive source upward at the same time as the another wire, the pipe of the support member rotatable with respect to the shaft is rotated. In this way, the curtain is raised while being wound around the support member.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a curtain elevating device according to the present invention. The same members as those described in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 1, the curtain elevating / lowering device includes a support member 12 provided on the curtain 10 and a plurality of windings formed at portions projecting from both ends of the curtain 10 by a required length. The wire (hereinafter referred to as “first wire”)
And other wires 26, 26 to be described later. The support member 12 has the hollow pipe 14 as a main body as described above, and as shown in FIG. 5, a cloth material 27 having a required width disposed at the center of the back surface of the curtain body 10. It is provided by winding around the outer peripheral surface of the pipe 14. At positions along the axis of the pipe 14, shafts 28 projecting from both ends of the pipe 14 by a required length are rotatably supported via bearings 30 disposed inside the pipe 14. Have been. This shaft 28
Is dimensioned slightly longer than the length of the pipe 14, for example. 2 and FIG.
As shown in the figure, the structure is basically composed of a pair of semicircular flanges 32, 32 set to a size that can be stored in the inner surface of the pipe 14, and a support 34 to which the flanges 32, 32 are attached.

The flange 3 constituting the bearing 30
2, 32, a semicircular notch 32a sized to have a radius slightly larger than the diameter of the shaft 28 is provided at the center in the radial direction. A flange 32b having a required width is formed along a direction perpendicular to the plate surfaces of the reference numerals 32, 32. The flange 32b is provided with a rivet hole 33 at a predetermined position as described later. Further, the support body 34 which also constitutes the bearing member 30 has a circular plate member 34 having a diameter slightly smaller than the radius of the flanges 32, 32.
a, a cylindrical boss 3 whose center axis is aligned
4b is a member formed by protruding at a required height. As shown in FIG. 2, the shaft 28 is located at the center of the plate portion 34a.
A communication hole 34c sized to allow insertion of the bearing 36 is formed, and a bearing 36 is coaxially fitted inside the boss 34b.

The bearing 36 is a general radial bearing having an inner diameter corresponding to the outer diameter of the shaft 28. Therefore, the pair of flanges 32,
As shown in FIG. 3, the notch 32 has the notches 32a opposed to each other so as to sandwich the communication hole 34c provided in the support 34, and is in contact with the support 34 in this state. Thereafter, a fastening member 38 such as a bolt is inserted into an insertion hole 32c provided at the same distance in the direction orthogonal to the opposite end in the direction orthogonal to the end portion, and the plate member portion corresponding to the insertion hole 32c. By screwing the fastening member 38 into a screw hole provided in the flange 34, the flanges 32, 3
2 is supported and fixed to the plate portion 34a.

The through holes 32c provided in the flanges 32, 32 are formed as long holes in the radial direction as shown in the drawing. Therefore, when the bearing 30 is inserted into the pipe 14 of the support member 12, the separation width of the flanges 32, 32 can be adjusted in advance according to the inner diameter of the pipe 14. The rivet hole 33 provided in the flange 32b is provided at a position where the extending direction of the insertion hole 32c intersects with the flange 32b. That is, as shown in FIG. 3, when the bearing 30 is inserted and arranged in the pipe 14, the flanges 32, 32 are in contact with the inner surface of the pipe 14, and this position is in contact with the inner surface. By inserting a rivet 42 into the rivet hole 33 of the flange portion 32b in contact with the rivet hole 33 through a perforated hole 40 formed in the pipe 14, the bearing 30 is fixed to the pipe 14. ing.

Further, at both ends (only one end is shown in the figure) of the pipe 14, bearings 30 having the same structure as the bearing 30 are provided.
However, it is attached with the open end of the flange 32b aligned with the open end of the pipe 14. As shown in FIG. 2, an annular member 44 whose inner diameter is made to correspond to the outer diameter of the pipe 14 is fitted into a position corresponding to the position where the bearing 30 is provided. A bearing 30 is provided on the peripheral surface of the annular member 44.
A piercing hole 44a is provided at a position corresponding to the rivet hole 33 provided in the flange portion 32b.
By inserting the rivet 42 through the perforated hole 40 formed in the pipe 14 and the pipe 14, the annular member 4 is inserted.
4 and bearing 30 are mounted inside the pipe. The shaft 28 is rotatably disposed with respect to the pipe 14 by inserting and fitting the shaft 28 into an inner diameter portion of a bearing 36 disposed on each bearing 30. Note that the width of the peripheral surface of the annular member 44 is
A flange 3 formed on the flanges 32
2b. A ring member 4 having a required width in a direction orthogonal to the extending direction of the pipe 14 is provided at a portion where the open end of the annular member is aligned with the open end surface of the pipe 14.
4b is integrally mounted.

At a position where the shaft 28 protrudes from both ends of the pipe 14 by a required length, as shown in FIG. 2, a roller (hereinafter referred to as a "main roller") 46 is rotatable with respect to the shaft 28. It is pivoted on. The main roller 46 is a so-called pulley in which a groove 46a having a trapezoidal cross section is formed in the entire peripheral surface thereof, and the outer diameter of the main roller 46 is set to be slightly larger than the outer diameter of the pipe 14.
A communication hole 46b having a diameter slightly larger than the diameter of the shaft 28 is formed in the center of rotation. At one end of the main roller 46, a boss portion 46b having a required height is formed so as to protrude at a position where the axis of rotation coincides with the center of rotation.
A bearing 36 similar to the bearing 30 is fitted in this portion. When the shaft 28 is inserted through the inner diameter portion of the bearing 36, the main roller 46
8 so as to be rotatable. At the center of rotation of the main roller 46, a concave portion 46c having a required diameter is provided around the communication hole 46b, and another concave portion 30 having the same configuration as the above-mentioned bearing portion 30 is provided in the concave portion 46c. Is to intervene. The bearing 30 is provided with the end face of the boss portion 34b, into which the bearing 36 is fitted, close to the end face of the concave portion of the main roller 46.
It is configured to be rotatable with respect to.

Further, in the groove 46a of the main roller 46,
As shown in FIG. 4, wires (hereinafter, referred to as “second wires”) 26, 26 different from the first wires 16, 16 wound around the pipe 14 are wound from above the main roller 46. ing. The second wires 26, 26 are connected to the first wires 16, 1
As in FIG. 6, it is made of a material having sufficient strength to withstand the load of the curtain 10, and one end thereof is fixed to the support shelf 18 supporting the curtain 10 as shown in FIG. . The other ends of the second wires 26 are connected to the support shelves 18.
After being wound around the first rollers 20, 20 arranged on the support shelf 18, it is wound around the second rollers 24 arranged on the support shelf 18, and further connected to the motor 22 via the horn 25. Have been. As shown in FIG. 5, the second wires 26, 26 and the first rollers 20, 20 and the second roller 24 around which the first wires 16, 16 are wound, respectively, They are arranged side by side. Therefore, the second wires 26, 26 and the first wire 1
The rollers 6, 16 are independently wound around the rollers 20, 24, respectively, so as not to interfere with each other. The drive source may be constituted by, for example, a slide cylinder or a rack and pinion other than the motor 22.

On the outer surface of the main roller 46, a cover 48 made of a plate having a required thickness is provided. That is, as shown in FIG. 6, the cover 48 has a rectangular shape with an upper half having a rectangular shape and a lower half having a diameter slightly larger than the diameter of the main roller 46. A hole 48a is formed at the center of the lower half to allow the shaft 28 to pass therethrough. After the shaft 28 is inserted through the hole 48a, a split pin (not shown) is inserted into the end of the shaft 28 protruding from the side surface of the cover 48, so that the cover 48 is prevented from falling off the shaft 28. . Further, a cap 50 for protecting the end of the shaft is screwed into the cover 48 via a fastening member such as a bolt. In addition, a cover body 52 is disposed above the main roller 46 on the upper end surface of the upper half. As shown in FIG. 2, the cover body 52 is formed by bending a plate body having the same width as the upper half portion into an inverted L-shape in cross section. Are fixed at a position orthogonal to the extending direction of the upper half. Further, the length of the short portion is set substantially equal to the thickness dimension of the main roller 46, and the long portion is the upper end surface of the flange 32b of the bearing 30 disposed at the open end of the pipe 14. And is extended to a position close to.

As shown in FIG. 4, the main roller 4 is provided at a portion defined between the cover body 52 and the cover 48.
A pair of sub-rollers 5 having a diameter sufficiently smaller than 6
4, 54 are rotatably supported above the main roller 46 at a required interval. As shown in FIGS. 6 and 7, a long hole 52a slightly longer than the separation width of the sub-rollers 54, 54 is provided at the center of the short portion of the cover body 52 along the extending direction of the short portion. Has been established. Accordingly, the second wire 26, 26 wound around the main roller 46 is wound around the inside facing the sub-roller 54, 54, and then passes through the elongated hole 52a.
To be pulled upward.

[0019]

Next, the operation of the curtain lifting device according to the embodiment will be described. As shown in FIG. 1, the curtain 10 is provided at a position where the support member 12 disposed at a substantially central portion in the up-down direction projects a required length from both ends of the curtain 10. The first wires 16, 16 are wound by a length necessary for winding up the upper half of the 10, and the second wires 26, 26 are wound around the main roller 46. By driving the motor 22 arranged on the support shelf 18 from this state, one of the second wires 26, 26 wound around the main roller 46 connects the first rollers 20, 20 and the second roller 24. Via motor 22
At the same time, the first wires 16, 16 wound around the pipe 14 of the support member 12 are pulled upward. As a result, the support member 12 is lifted upward while both ends are supported by the main roller 46 that freely rotates with respect to the shaft 28 disposed therein, and the shaft 28 is supported via the bearing 30. Pipe 1 supported by
8, the curtain 10 is wound around the support member 12 together with the cloth material 27, as shown in FIG.

By continuously driving the motor 22, the curtain 10 is wound around the pipe 14, as shown in FIG. Note that, as described above, the support member 12 is disposed substantially at the center of the curtain 10. For this reason, the curtain body 10 is wound around the upper half of the support member 12 by the pipe 14, and at the same time, the lower half of the support member 12 is also wound around the pipe 14. Therefore, the winding operation of the curtain 10 can be completed in about half the time required when the support member 12 attached to the lower end is wound up to the upper end of the curtain 10.

[0021]

As described above, in the curtain elevating and lowering device of the present invention, rollers are rotatably disposed at both ends of a support member on which a wire for winding the curtain is wound. On the other hand, a wire different from the wire used for winding the curtain is wound. That is, the supporting member constituting the lifting device has a configuration in which a portion for rotating the pipe and a portion for supporting the supporting member are independent from each other by the wire and another wire. Moreover, the supporting member is disposed at the center of the back surface of the curtain. For this reason, even when the curtain body is moved up and down in a state where an obstacle exists below the curtain body, interference between the support member and the obstacle is avoided, and each wire is loosened with respect to the support member due to this. Does not occur, it is possible to prevent the support member from accidentally dropping due to contact with the obstacle. Further, since both ends of the support member are doubly supported by the respective wires, even if one of the wires at each end is cut, it is supported by the other wire.
Further, by arranging the supporting member at the center of the curtain, there is an advantageous effect that the time required for moving the curtain up and down is reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a curtain elevating device according to a preferred embodiment of the present invention together with a curtain.

FIG. 2 is a longitudinal sectional front view of a main part showing a shaft, a main roller, and the like provided at an end of a support member in the curtain elevating device according to the embodiment of the present invention.

FIG. 3 is a vertical sectional side view of a main part showing a shaft provided at an end of a support member and a bearing of the shaft in the curtain elevating device according to the embodiment of the present invention.

FIG. 4 is a vertical sectional side view of a main part showing a main roller disposed on a support member and a wire wound around the main roller in the curtain elevating device according to the embodiment of the present invention.

FIG. 5 is a side view showing the curtain elevating device according to the embodiment of the present invention together with the curtain.

FIG. 6 is a perspective view of a main part showing a curtain elevating device according to an embodiment of the present invention.

FIG. 7 is a plan view of a main part showing a cover provided at an end of a support member together with a main roller in the curtain elevating device according to the embodiment of the present invention.

FIG. 8 is a side view showing a state where the curtain is wound around a support member in the curtain elevating device according to the embodiment of the present invention.

FIG. 9 is a side view showing a state where the curtain is wound around a support member in the curtain elevating device according to the embodiment of the present invention.

FIG. 10 is a front view and a plan view showing a curtain elevating device according to the related art.

FIG. 11 is a perspective view of a relevant part showing a curtain elevating device according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Curtain body 12 Support member 14 Pipe 16 1st wire 22 Motor (drive source) 26 2nd wire 28 Shaft 30 Bearing 46 Main roller

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[Procedure amendment]

[Submission date] October 8, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Curtain lifting device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION relates to lifting apparatus of the invention curtain, more particularly, path a curtain to be used for projection
In the apparatus Ru is lifting by removing wound or wound type, by the portion and the another configuration removing wound or attached portion and the winding supporting the Makutai may safely hoisting is prevented from falling curtain The present invention relates to a curtain elevating device configured as described above.

[0002]

2. Description of the Related Art Projection used in facilities such as schools
Of Makutai, as shown in FIG. 11, against white cloth 13 square coated with vinyl, match the dimensions of the white cloth 13
Black fabric 11 which is substantially central portion is cutout formed by (white cloth 13
(The whole is coated in black as well as)
The curtain body 10 is used as a fixed part.
It is designed to be hung on a support shelf 18. Also at the lower end of Makutai 10, the support member 12 is arranged which is set to only a required length long than its width. The support members 12 are respectively provided at both ends of the pipe 14 made of steel or the like to which the lower end of the curtain body 10 is fixed , and are slightly larger than the pipe 14. And a flange 15 set to a diameter dimension . A pipe 1 protruding from both left and right ends (widthwise both ends) of the curtain 10
As shown in FIG. 12, wires 16, 16 used for elevating and lowering the curtain 10 are respectively provided on 4. That is, the wires 16, 16 are made of a material having a strength enough to withstand the load of the curtain 10, and one end thereof is fixed at a required position on the peripheral surface of the pipe 14 .
Rutotomoni wound by the length necessary for winding of the curtain 10 relative to the pipe 14, the other end portion and the take-up means to be described later
Connected to the motor 22.

[0003] A support shelf 18 on which the curtain 10 is suspended
At a position facing the upper side of both end portions in the support member 12,
The first rollers 20, 20 are rotatably disposed, respectively, and a motor 22 is provided on the support shelf 18. A second roller 24 is rotatably disposed on the support shelf 18 at a position facing the motor 22 with the curtain body 10 therebetween. The first roller 20, 20 <br/> before Kiwa ear 16 and 16 from both ends Ru is guided over the pipe 14, the corresponding
After being commonly kicked wrapping the wound multiplied vignetting Rutotomoni second roller 24, the other end is communicated tie to the motor 22. Contact Do <br/>, each wire 1 6 at a position between the position Ru wrapping eclipse the second roller 24 until the communication tied to the motor 22, yo Rimodoshi 25 is connected as shown in FIG. , and it is able to prevent the wire unwanted twist 1 6 caused by this Yorimodoshi 25.

[0004] When winding up the curtain 10 is wound in order to increase pull the wires 16, 16 in the state wound around the two end portions of the pipe 14 via the motor 22. Accordingly, the wires 16, 16 are unwound from the pipe 14 and
As shown in FIG. 11 (b), the curtain body 10 having one end fixed to the pipe 14 by rotating and rising .
There so that the attached pipe 14 wound. Curtain 10
When using the a dewa Lee <br/> ya 16,16 thereby reversely rotating the motor 22 Makihazushi, by lowering the pipe 14
While the curtain 10 is unwound from the pipe 14, the wire 16,
16 are wound . In still move up and down the Makutai 10, synchronously been suggested only the winding and roll outer left and right portions of the wire 16, 16 support member 12, moves up and down while the support member 12 is held in a horizontal state It is configured to obtain. When the curtain 10 is lowered , the support member 12 also functions as a weight for holding the curtain 10 vertically.

[0005]

[0007] As described above, with respect to the support member 12 which is disposed at the lower end portion of the Makutai 10, curtain 1 by contributing winding only or roll outer the wire 16, 16
0 is raised and lowered. The wires 16 and 16 themselves are configured so as not to easily slip off the support member 12 by the flanges 15 provided at both ends of the support member 12. However, despite an obstacle such as, for example, a piano and a desk just under the Makutai 10, if the operator were filter paper descending carelessly Makutai 10 while unaware of these, Makutai 1
Support member 12 of 0 is not lowered aboard the obstacle <br/> that there Ru. Then, further bath a Makutai 10 from this state
When it continued to the support member 12 of the wire 16, 16
There want loose wound state against, when the supporting member 12 are I ride to the obstacle falls from unexpectedly the obstacle, at once dropped by the amount of wire 16, 16 is loose, the impact in there is a fear that the wire 16, 16 causes late that serious by Rukoto to be cross dislodged or broken from the supporting member 12.

[0006] When Ru winding the curtain 10, as described above, wherein is the pulling support member 12 with the wires 16, 16 are configured to rotate, this support member 12 is該幕body due to the position at the lower end portion 10, when approaching inadvertently person other than the operator Makutai 10, also fear that part of such the clothes went a winding Murrell a support member 12 that rotates It will be pointed out .

[0007]

SUMMARY OF THE INVENTION The present invention resides in the prior art described above.
And in view of the shortcomings and, which by was proposed to suitably solve the Shi bath winding and winding of the curtain safety
And to provide a lifting device of the curtain that may perform one One in a short time.

[0008]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended purpose, the present invention provides a method for suspending a product from a fixed portion.
Is in parallel to the width direction on the rear surface of Makutai used for projection
One end is arranged to extend, a pipe which is set only long width dimension by Risho main length of該幕body, the portion protruding by a required length from the left and right ends of the curtain in the pipe part is wound required several volumes in a state of being respectively fixed Rutotomoni, respectively interlocking in disposed a winding means at its other end the fixed part
And a pair of wire which is, by winding the <br/> wire in said winding means, the said pipe the wire is Makigaisa rises while wound the curtain rotates co By unwinding the wire from the winding means,
The pipe, which is unwound from the curtain, rotates to wind the wire.
In the curtain lifting and lowering device that was lowered while rotating ,
It is inserted concentrically inside the pipe and through a bearing
Is rotatably supported Rutotomoni, a shaft is protruded only end required length from both ends of the pipe, rotatably disposed a pair of the position projecting from both ends of the pipe in the shaft Rollers and the rollers are respectively wound around the rollers.
And one end is fixed to the fixing portion, and the other end is
Part is I and a pair of wires that are interlocking to said winding means
The wire arranged on the pipe is wound by the winding means.
When lifting or lowering the pipe by taking it off or unwinding,
A pair of wires wound around the
The shaft is horizontal by unwinding and unwinding.
It is configured to be raised and lowered in a state .

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a curtain elevating device according to the present invention. Note that the same members as those described in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0010] The lifting device of the curtain shown in FIG. 1, before Kimakutai 1
0, and a plurality of first members wound around a portion protruding from both ends of the curtain body 10 by a required length .
The wires 16, 16 and another second wire 26, 2 described later
6 mainly . Supporting support member 12, you hollow pipe 14 as described above been made to the body portion, as shown in FIG. 5, substantially at the center of vertical Makutai 10
The fabric material 27 of a required width disposed on the back kick Ru mounting eclipse Tei by winding the outer circumferential surface of the pipe 14. The inside of the pipe 14, the end portion from both ends of the pipe 14
Shaft 28 is concentric with only the the respective projecting required length of
Manner while being inserted, double that is disposed in the interior of the pipe 14
It is rotatably supported via a number of bearings 30 .

[0011] The bearing member 30, as shown in FIGS. 2 and 3, a pair of semi-circular flanges 32, 32 which are set to a dimension that can be accommodated in the inner portion of the pipe 14, the flange 32,3
2 is basically composed of a support 34 to which the base 2 is attached . Each flange 3 2 constituting the shaft receiving fixture 30, in the center of the radial, with semicircular notches 32a which is sized radially slightly larger than the diameter of the shaft 28 is formed, the flange 32 the peripheral portion of the flange 3 2
A flange portion 32b having a required width is formed along a direction perpendicular to the plate surface of the second member. The flange 32b is provided with a rivet hole 33 at a predetermined position as described later. Supporting bearing member 34 that make up the axial <br/> female component 30 was or has flanges 32, 32
This is a member formed by projecting a cylindrical boss portion 34b having a required length to a circular plate portion 34a having a diameter slightly smaller than the radius of the cylindrical portion 34a.
As shown in FIG. 2, a communication hole 34c having a size allowing insertion of the shaft 28 is formed at the center position of the plate portion 34a, and a bearing 36 is coaxially provided inside the boss portion 34b. Is fitted. Incidentally, there is bearings 36 a common radial bearing, wherein the inner diameter shaft 2
8 is used.

[0012] Before Symbol pair of flanges 32 and 32, as shown in FIG. 3, the communication hole 34c provided in the support 34
In a state that the cutout 32a placed opposite so as to sandwich the, it is brought into contact with plate portion 34a of the support 34. After a while, both
Each of the insertion holes 32c provided at the same distance from each other in the direction orthogonal to the opposite ends of the flanges 32 , 32.
The fastening member 38, such as inserting the bolt, by screwing into a screw hole provided in the plate material part 34a correspond with the insertion holes 32c, flange 32 is supported by and fixed to plate unit 34a It has become.

[0013] Note that the flange 3 2 the insertion holes 32c provided in, as shown in FIG, has become along the Hare elongated hole in the radial direction. Thereby, when inserting the bearing 30 into the pipe 14 of the support member 12, the separation width of the flanges 32, 32 can be adjusted in advance according to the inner diameter of the pipe 14 . Rivet holes 33 provided in the flange portion 32b or the extending direction of interpolation <br/> hole 32c is provided at a position that intersects the flange portion 32b. That is, as shown in FIG. 3, this position is a portion where the flanges 32, 32 are in contact with the inner peripheral surface of the pipe 14 when the bearing 30 is inserted into the pipe 14, and this inner peripheral surface The rivet 42 is inserted into the rivet hole 33 of the flange portion 32b in contact with the rivet 42 through the perforated hole 40 formed in the pipe 14 so that the bearing 30 is fixed to the pipe 14. It has become.

[0014] The end portions of the pipe 14 (shown only Figure 2, one end portion), the bearing member 30 and the bearing member 3 having the same structure
0, Ru Tei attached to the open end of the flange portion 32b while being aligned with the open ends of the pipe 14. This bearing 3
As shown in FIG. 2, an annular member 44 having an inner diameter corresponding to the outer diameter of the pipe 14 is fitted into a position corresponding to the position where 0 is disposed. A perforated hole 44a is provided in the peripheral surface of the annular member 44 at a position corresponding to the rivet hole 33 provided in the flange 32b of the bearing 30. The perforated hole 44a is formed in the perforated hole 44a and the pipe 14. By inserting the rivet 42 through the drilled hole 40, the annular member 44 and the bearing 30 are attached to the pipe 14 . Then the shaft 28, by inserting fitted on the inside diameter portion of the bearing 36 disposed in each bearing member 30, the shaft 28 is <br/> free rotation and pivotally supported with respect to the pipe 14 . The width dimension of the peripheral surface of the annular member 44 is set to be substantially the same as the flange 32b formed on the flanges 32 constituting the bearing 30. A ring member 44b having a required width is integrally attached to a portion where the open end of the annular member is aligned with the open end face of the pipe 14 in a direction orthogonal to the direction in which the pipe 14 extends.

[0015] required by the length and respectively projecting position from both ends of the shaft 28 is a pipe 14, as shown in FIG. 2, with respect to the shaft 28 and the main roller 4 6 is rotatably supported . The main roller 46 is a so-called pulley in which a groove 46a having a trapezoidal cross section is formed in the entire peripheral surface thereof. The outer diameter of the main roller 46 is set to be slightly larger than the outer diameter of the pipe 14, and the main roller 46 rotates. Shaft 2 in the center
Communication hole 46 set to a diameter slightly larger than the diameter of 8
b is drilled. At one end of the main roller 46,
Boss 46 c of the required length at a position to match the rotation center and the axial center are protruding molding, the bearing device 3 in this portion
A bearing 36 similar to that of No. 0 is fitted. And the bearing 3
By inserting the shaft 28 into the inner diameter portion of 6,
The main roller 46 is disposed rotatably with respect to the shaft 28. Note and the rotation center of the main roller 46 recess 46 d of the required diameter is provided around the communicating hole 46b, the concave portion 46 d, another bearing according to the same configuration as the bearing member 30 of the The tool 30 is interposed.
The bearing member 30 is provided in the boss 3 into which the bearing 36 is fitted.
The end surface of the main roller 4b is disposed close to the end surface of the concave portion of the main roller 46, and is configured to be rotatable with respect to the shaft 28.

Further, as shown in FIG. 4, a second wire 26 different from the first wire 16 wound around the pipe 14 is provided in the groove 46a of each of the main rollers 46. 4
It is kicked wrapping from above 6. The second wire 26 is made of a material having a strength enough to withstand the load of the curtain body 10 like the first wire 16, and as shown in FIG. It is fixed to the supporting shelf 18 for supporting. The two other ends of the second wire 26 and 26, the support ledge 18 of the first roller 20, 20 disposed
After being kicked wrapping in, commonly wrapping eclipse the second roller 24 disposed on the support ledge 18, further wherein Yorimodoshi 2
5 through being communicated tied to the motor 22. The second
The first roller 20, 20 and the second roller 24 to the wire 26 and the first wire 16, 16 is kicked entraining <br/> is as shown in FIG. 5, in the front-rear direction across the Makutai 10 Two units are provided side by side. Therefore the second wire 26, 26 and the first wire 16, 16 are wrapping eclipse each independently for each roller 20, 24 are configured so as not to interfere with each other. As the winding means , for example, a slide cylinder or a rack and pinion is used in addition to the motor 22 .
You can also.

On the outer surface of the main roller 46, a cover 48 made of a plate having a required thickness is provided. That is, as shown in FIG. 6, the cover 48 has a rectangular shape with an upper half having a rectangular shape and a lower half having a diameter slightly larger than the diameter of the main roller 46. A hole 48a is formed at the center of the lower half to allow the shaft 28 to pass therethrough. After inserting the shaft 28 into the hole 48a, by inserting the split pin (not shown) to the end of the shaft 28 projecting from the outer side surface of the cover 48, the cover 48 is configured so as not to fall off from the shaft 28 You. Further with respect to this part, a cap 50 for protecting the shaft end portion is fixed to the cover 48 via the fastening member, for example a bolt or the like. The mosquitoes
A cover body 52 located above the main roller 46 is provided on the upper end surface of the upper half of the bar 48 . This cover body 52
As shown in FIG. 2, a plate body having the same width as the upper half is bent into an inverted L-shape in cross section, and the open end of the short portion is It is fixed at a position orthogonal to the extending direction of the portion. Furthermore the length of the short side portions, as well is set to be substantially equal to the thickness of the main roller 46, the longitudinal site, before disposed in the open end of the pipe 14
The annular member 44 extends to a position close to the outer peripheral end of the ring member 44b .

[0018] the portion defined between the cover member 52 and the cover 48, as shown in FIG. 4, the main roller 4
A pair of sub-rollers 5 having a diameter sufficiently smaller than 6
4, 54 are rotatably supported above the main roller 46 at a required interval. In the center of the transverse portion in or cover member 52, as shown in FIGS. 6 and 7, the elongated hole of slightly longer size than spaced the width of the sub-rollers 54, 54 5
2a is opened along the extending direction of the short region.
Thus it said kicked wrapping the main roller 46 and the second wire 2 6
, After being kicked wrapping inwardly facing of both sub-roller 54, and is guided upward of the curtain 10 through the long hole 52a.

FIG . 8 shows another embodiment of the curtain elevating device.
The lifting device, as shown in the figure,
In the portion where the concave portion 46d of the main roller 46 is formed,
Bearing 36 aligns its side with the side of main roller 46
It is installed in the state where it was set. That is, the main roller 46 is
The boss 46c is omitted, and is located at the center of rotation of the main roller 46.
The bearing 36 is fitted into the communication hole 46b having the required diameter.
Are located. It is also located at the open end of the pipe 14
The side surface of the annular member 44 is
Through a fastening member 38 such as a bolt at a position facing the diameter portion
The support 34 is fixed. The center position of this support 34
In the installation, as shown in the figure, a bearing 36 similar to the above,
The bearing 36 disposed on the main roller 46 is aligned with the shaft center.
At the center of the bearing 36.
The shaft 28 is configured to be inserted and rotatable.
I have.

Further, on the outer surface of the main roller 46,
The support 34 and the key provided with the cover 48
The portion of the cap 50 is, as shown in FIG.
Only the cap 50 disposed outside is used.
Can be. In this case, the cap 50 has
The bearing 36 is fitted at the position where the shaft center is aligned with the receiver 36
The shaft 28 is inserted through the center of rotation.
Have been. This cap 50 is
It is attached via a fastening member such as a bolt. Before
The shaft 28 extends over the entire axis of the pipe 14.
The pie does not need to be provided, for example, as shown in the figure.
At the required position of the inner diameter of the
And a main roller at the open end of the pipe 14.
46 and the cap 5 arranged with the
You may make it intervene only between 0. Also Sha
At positions near both ends of the shaft 28, along the circumferential direction
A groove 28a formed in a semi-circular cross section is recessed,
The ring pin 56 is fitted into the groove 28a. This
That both ends of the shaft 28 come off from the bearing 36.
It is configured to prevent.

[0021]

Next, the operation of the curtain lifting device according to the embodiment will be described. As shown in FIG. 1, the curtain 10 is provided at a position where the support member 12 disposed at a substantially central portion in the up-down direction projects a required length from both ends of the curtain 10. hoisting Geni length fraction required halves only on the 10 together with the first wire 16, 16 is wound, the second wire 26, 26 around the main roller 46, 46
It has been kicked hanging. By driving the motor 22 disposed on the support shelf 18 from this state, the main rollers 46 , 46
Second wire 26,2 6 kicked wrapping to the motor 22 via the first roller 20, 20 and the second roller 24
At the same time taken wound, the first wire 16 and 16 wound pipe 14 wound support member 12 is also wound taken. This supporting member 12 is, together with the lifting upper up is upward while being supported at both ends in the main roller 46 to freely rotate relative to the shaft 28 disposed therein, the bearing device 3
0 is rotated pipes 14 supported on the shaft 28 via, as shown in FIG. 9, Makutai 10 to the support member 12 is kicked the winding together with the cloth material 27.

[0022] Then, by continuously driving the motor 22, as shown in FIG. 10, so that the curtain 10 is kicked with the pipe 14 wound. Note that, as described above, the support member 12 is disposed substantially at the center of the curtain body 10 in the vertical direction . Because curtain 10 This was, at the same time the upper half eclipsed-pipe 14 wound from the support member 12, the lower half portion of the support member 12 is kicked likewise pipe 14 with wound. Thus hoisting up the work of the curtain 10, the support member 12 attached to the lower end portion can be completed in about half the time when winding the gel to the upper end portion of the Makutai 10.

Next, the motor 22 is driven in the reverse direction to
By unwinding both wires 16, 26, the curtain 10
Is unwound from the pipe 14 and the first wires 16, 16
Is wound around the pipe 14. The second wire 26,2
6 through the main rollers 46, 46, the shaft 28
Is lowered in a horizontal state. In this case, the support member
12 is arranged at the center of the back surface of the curtain 10,
10 When there is an obstacle below
Avoid interference between support member 12 and obstacles
And at the same time,
Since the loosening of the first wire 16 does not occur,
Can prevent the support member 12 from being inadvertently dropped due to contact of
You. Both ends of the support member 12 are connected to the second wire 2.
6, 26, the first wire 16
Is broken by the second wire 26.
12 can be supported.

[0024]

As described above, according to the present invention, in the lifting device of the curtain of the present invention, by winding a wire subjected Geni on winding curtain Pas
The roller is disposed rotatably at both ends of the shaft inserted rotatably into types, relative to the roller, and wrapping only so that configure different wire hoisting Geni provide wire curtain
Was. That is, a portion for supporting the part and the pipe to rotate the pipes in the lifting device, depending on each different wire
It is constructed by independent. Moreover, since the disposed the pipe substantially at the center of the vertical direction of the rear surface of the curtain, even when unloading the curtain in a state where an obstacle beneath the curtain is present, the interference between the pipe and the obstacle Since it is avoided and the wires do not loosen with respect to the pipe due to this, it is possible to prevent the pipe from accidentally dropping due to contact with the obstacle. The two ends of the pipe, the so supported doubly by the wires, even when one of rupture of the wires at each end, is supported by the other wire
To prevent falling. Further, by which is disposed a pipe in the center of Makutai, the time required for lifting and lowering of the該幕body is shortened, have beneficial advantages such.

[Brief description of the drawings]

FIG. 1 is a front view showing a curtain elevating device according to a preferred embodiment of the present invention together with a curtain.

FIG. 2 is a longitudinal sectional front view of a main part showing a shaft, a main roller, and the like disposed at an end of a support member in the curtain elevating device according to the embodiment.

FIG. 3 is a vertical sectional side view of a main part showing a shaft disposed at an end of a support member and a bearing of the shaft in the curtain elevating device according to the embodiment.

In lifting devices of the curtain according to Fig. 4 embodiment, a main part longitudinal sectional side view showing a kicked wrapping the main roller and the main roller is disposed in the support member wire.

FIG. 5 shows a curtain elevating device according to an embodiment with the curtain lowered.
It is a side view shown in a state .

FIG. 6 is a perspective view of an essential part showing a curtain elevating device according to the embodiment.

FIG. 7 is a main part plan view showing a cover disposed at an end of a support member together with a main roller in the curtain elevating device according to the embodiment.

FIG. 8 shows another embodiment of the curtain elevating device according to the embodiment.
It is a principal part longitudinal front view.

In lifting devices of the curtain according to Fig. 9 embodiment is a side view showing a state Keru the winding of the curtain on the support member early.

In lifting devices of the curtain according to FIG. 10 embodiment, it is a side view showing a state only the winding of the curtain on the support member.

FIG. 11 is a front view and a plan view showing a curtain elevating device according to the related art.

FIG. 12 is a perspective view of a main part showing a curtain elevating device according to the related art.

[Description of Signs] 10 curtain body 14 pipe 16 first wire 18 support shelf (fixed portion) 22 motor ( winding means ) 26 second wire 28 shaft 30 bearing 46 main roller 48 cover (plate) 54 sub-roller

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 9

[Correction method] Change

[Correction contents]

FIG. 9

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 10

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 11

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Added

[Correction contents]

FIG.

Claims (3)

[Claims] 1. A curtain (10) mainly used for projection.
And a pipe (14) formed longer by a required length than the width dimension of the curtain (10) as a main body, and the pipe (14) is attached to the curtain (1).
(0), and one end is fixed to a portion where both ends of the support member (12) project from the left and right ends of the curtain (10) by a required length, respectively. After a required number of turns are wound around the peripheral surface of the pipe (14), the other end is connected to a wire (16) connected to a drive source (22) for winding, and the drive source (22) Pull up the wire (16) wound near both ends of the support member (12) through,
This allows the support member (1) to rotate while rotating the pipe (14).
2), the curtain (1) is attached to the pipe (14).
0), and by urging the drive source (22) in the reverse direction, the curtain (10) is lowered while the wire (16) is wound around the pipe (14). A body elevating / lowering device, comprising a shaft (28) projecting from both ends of the pipe (14) by a required length at a position along the axis of the pipe (14).
The shaft (28) is rotatably supported via a bearing (30) disposed inside the pipe (14), and the shaft (28) is protruded from both ends of the support member (12). A roller (46, 46) is rotatably inserted through the (28), and the wire (16) wound around the peripheral surface of the pipe (14) from above the roller (46, 46). Another wire (26) is wound around, one end of the wire is fixed to a required position, and the other end is connected to the drive source (22), and the roller (46) is connected via the drive source (22). , 46) by pulling one of the other wires (26) wound therearound.
The rollers (46, 4) freely rotating with respect to the shaft (28)
While the support member (12) is lifted upward while being supported by 6), the pipe is also connected via the drive source (22).
By pulling the wire (16) wound around (14) upward at the same time as the another wire (26), the support member (12 ) Pipe
(14) is rotated, whereby the curtain (10) is raised while being wound around the support member (12). 2. The shaft (28) projecting outward by a required length from the outer surface of the roller (46, 46) is attached to the roller (4).
(6,46) A plate sized to cover the side
(48), and a sub-roller (54, 54) having a diameter sufficiently smaller than the rollers (46, 46) at a portion extending from the peripheral edge of the plate body (48) by a required length. The curtain lifting / lowering device according to claim 1, wherein the curtains are arranged to face each other. 3. The curtain lifting and lowering device according to claim 1, wherein the support member is disposed at a vertically central portion of the curtain.