JP2001073653A - Winding-up steel shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent frictional noise and to prevent a slat from bending and being locked in a guide rail missing part by projecting a flexible damping member arranged in a vertical guide rail from the guide rail upper end to the guide rail missing part around a screen roll outer circumference over a half of the circumference and hanging a balance weight at the tip. SOLUTION: In a guide rail missing part between a take-up drum 19 and a vertical guide rail 29 upper end, a flexible damping material 32 arranged in the vertical guide rail 29 and made of mohair is protruded and extended from the guide rail 29 upper end so as to be arranged around a screen roll 14R outer circumference over a half of it. At the tip, a balance weight is connected and hung, so that an endless type guide rail is arranged to the vertical guide rail 29 lower end for always guiding a slat screen 14S along a smooth curved continuous rail inside a shutter case 30. In this way, metallic noise due to contact of the vertical guide rail 29 to the upper end funnel port can be reduced, while the slat 14 can be prevented from bending and being stuck in the guide rail missing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight shutter which is mainly provided at an opening of a house or a store such as a store on a lower floor.

[0002]

2. Description of the Related Art Conventionally, shutters include a large opening heavy shutter having a thick steel roll forming slat, a light shutter having a thin steel or stainless steel roll forming slat, and an aluminum extrusion slat. The slat has an S-shaped cross section, that is, a cylindrical hinge having slit-shaped openings at both peripheral edges of the slat is formed such that the openings are respectively opposed to the back surface of the slat surface, and adjacent cylindrical hinges are formed. In order to embrace each other, the circumference of the other hinge is guided from the slit-shaped opening and inserted and fitted concentrically from the opening, is formed into a continuous chain-shaped slat screen, and can be bent in both out-of-plane directions.

[0003]

However, in the above-mentioned conventional shutter, metal noise is generated during the use of the widening and at the time of the opening / closing operation. In particular, the metal sound is used as a substitute for a shutter in a house, and in a quiet time in the morning and evening, this metal sound becomes noise. This is largely due to the correlation between the slat structure of the shutter and the winding drum structure. In addition to this factor, since the shutter case is arranged at a height that is out of reach, there is the complication that the slat screen must be pulled down and closed using the operating rod etc. If the urging force of the torsion spring of the winding drum is deteriorated, the slat must be pushed up at a stretch and accelerated from below to retract and retract, which has the disadvantage of further amplifying the metal noise. .

The above problems are caused by the slat structure, the winding drum,
This is due to the shutter case that stores this and the shutter structure composed of these three members. Since the screen roll outer diameter of the slat screen wound and housed in the winding drum having the conventional structure is large, the outer dimensions of the shutter case accommodating the screen roll are inevitably large. The mounting position of the vertical guide rail for guiding the slat screen to the wall surface, the positional relationship between the shutter case and the screen roll, and the slat structure are closely related to the metal noise generation factor.

[0005] That is, the vertical guide rail is installed in a shutter case located above when mounting on a wall surface.
In some cases, it is located below the expected dimension of the outer diameter of the screen roll, and the downward tangent of the slat screen that is suspended from the outer circumference of the screen roll does not match this vertical guide rail guide groove bar, and the outer circumference of the screen roll It changes to the left and right with respect to the guide rail as the diameter dimension increases or decreases. For this purpose, the slats constituting the slat screen need to be bent in two directions: a direction in which the slat is wound around the winding drum in the upper space of the guide rail, and a direction in which the slat is guided by the upper end of the guide rail.

In addition, in order to fit the shutter case and the vertical guide rail into the wall, the slat screen may be used in two winding directions, that is, the outer winding and the inner winding with respect to the winding drum. The slats are bent in both directions. Therefore, as described above, the slat has cylindrical hinges having slit-shaped openings at both ends of the material, formed on the front side and the back side with respect to the slat surface, and the adjacent slats, the front side cylindrical hinge and the back side cylindrical hinge mutually open. To guide the cylindrical circumference of the mating hinge from the other and embrace each other, they are fitted concentrically, and the cylindrical hinges are mutually formed into a continuous slat screen in which the inner peripheral surface and the outer peripheral surface are in contact engagement with each other, The expanded slats have a chain-like structure that can be bent in both left and right directions.

[0007] Therefore, concentric circles cannot be held between the cylindrical hinges, and each slat is displaced vertically and out of plane at this hinge portion to cause play. At this time, the cylindrical hinges collide with each other and generate a metal impact sound. The concentric cylindrical hinges are connected to adjacent slats by one point on the circumference, that is, line contact engagement along a tangent line, and are easily bent. That is, since the function of the two-point support does not exist in the fitting structure of the cylindrical hinges, the one hinge cannot restrict the rotation of the other hinge.

When an out-of-plane pressure such as wind pressure is applied to the slat screen which is spread and hung, the slats cannot maintain concentric circles, so that the slats are bent sideways, play is eliminated, and adjacent slats are integrated with each other. Each slat requires a certain degree of bending strength because each slat undergoes considerable bending before resisting external forces, and the bending strength of the entire slat screen is weak. . For this purpose, each slat is generally provided with a bent portion in addition to the cylindrical hinge to reinforce it.

However, the slat screen which is spread and hung has numerous countless uneven lines, which not only causes noise as described below, but also has a disadvantage that dust adheres to the slat screen and the stain easily occurs. .

[0010] In the shutter structure, the upper end of the vertical guide rail is located below the outer periphery of the screen roll including the winding drum in or immediately below the shutter case, and the space between the upper end of the guide rail and the outer periphery of the screen roll is formed by the slat screen. The guiding trajectory is lacking. Therefore, a fan-shaped funnel opening is formed at the upper end of the guide rail, and the slat screen is guided and guided from the inclined angle at the funnel opening, and the above-mentioned uneven portion on the screen surface is alternately provided at the funnel opening when the screen is expanded and wound up. Metal impact noise is continuously generated upon contact.

On the other hand, when the expanded slat screen is pushed up from below and wound up and accommodated, when the torsion spring stored in the winding drum is degraded, the urging force of the torsion spring is reduced. The winding speed is further delayed, and the slat bends and anchors in the space between the upper end of the guide rail and the screen roll, which hinders the opening and closing operation, and causes a failure.

Next, a description will be given of the winding drum structure, which is one of the causes of the above problems, and a shutter case for storing the same. The winding drum of the conventional shutter is generally configured as follows. That is, a support shaft (generally, an iron pipe having a diameter of 30 mm to 40 mm) having a strength that does not bend even when supporting the entire weight of the steel slat screen, and a plurality of shafts rotatably supported by the support shaft. The drums are inserted and arranged at both ends and the center, and the outer circumferences of these drums are connected by flat bars.One end of the coiled torsion spring inserted on both sides of the support shaft is connected to the drum, and the other end is connected to the support shaft. The support shaft is fixed to both ends of the shutter case. In order to wind the slat screen on the winding drum with the above structure, first put a hand on the flat bar connecting the drum and rotate the drum to store enough biasing force on the torsion spring before winding. The upper end slat of the slat screen is connected and fixed to the drum, and the slat screen is wound up, so that the assembling work is troublesome.

[0013] The circumference of each of the screen rolls in which the entire slat screen is wound and accommodated in the winding drum having a large outer diameter (generally φ80 mm) is large, and the outer diameter of the shutter case accommodating the screen rolls is inevitable. It is largely configured. Since the support shaft that supports the winding drum is fixed to the lids at both ends of the shutter case, the horizontal level depends on the mounting accuracy of the shutter case. If the horizontal level of the support shaft is poor, the vertical edges of the slat screen, which is extended and suspended from the winding drum, cannot maintain verticality, and the vertical edges are too close to one of the vertical guide rails on both sides, and the inner wall of the guide rail guide groove The slat screen also has a problem that sliding noise is generated by contact with the slat screen, and a one-turn or one-side-up phenomenon of the slat screen also occurs, which hinders a smooth opening / closing operation.

On the other hand, since the shutter case having a large outer diameter cannot be buried and concealed on the upper wall surface of the opening of the building in many cases, the shutter case is disposed considerably protruding from the wall surface and is noticeably heavy in appearance and impairs the appearance of the building. In addition, in order to make the shutter case having a large outer diameter into a molded product such as an extruded aluminum material, the outer diameter is too large to be extrudable, or the cost is increased. Is common.

[0015] However, a thin sheet metal shutter case having a large flat portion is easily deformed by a small external pressure.
Great care must be taken in the installation work. Another problem is that when rain falls on a shutter case that is provided so as to protrude considerably from the wall surface, the rain sound is echoed and amplified in the case and becomes noise.

[0016]

For this purpose, the present invention relates to a flexible member such as a mohair or the like disposed on a vertical guide rail at a portion of the guide track lacking between the winding drum of the conventional shutter and the upper end of the vertical guide rail. Extends from the upper end of the guide rail, extends around the screen roll, and makes a semi-circle,
By connecting and hanging a balance weight to the tip,
An endless guide track is provided to the lower end of the vertical guide rail, and the slat screen is always guided along the smoothly curved connection track in the shutter case, so that the metal noise caused by the contact of the upper end of the vertical guide rail with the funnel opening. And at the same time, prevents the slats from being bent and moored in the space guide track lacking portion.

An elliptical cylindrical hinge having a slit-shaped opening as a cylindrical hinge of the slat is provided at both ends of the slat, near the inner peripheral side where the slat is wound around the winding drum with respect to the slat surface, and furthermore, the opening is provided. Are arranged in the same direction, and one elliptical cylindrical hinge is fitted to the adjacent slats so as to entirely wrap the other elliptical hinge in the same winding direction to form a slat screen. When it is spread down from the winding drum, play in the vertical direction between the slats is eliminated, and the hinge on one side becomes the hinge on the other side due to the surface contact of the inner and outer circumferential surfaces of the elliptical cylindrical hinges. Each slat is not bent in the direction opposite to the direction in which it is wound, and is formed into a slat screen such as a single metal plate by restraining the out-of-plane rotation.

Further, the take-up drum has a smaller diameter than the above-described conventional take-up drum, and a smaller outer diameter of the screen roll for winding the slats. It is made compact and made of a material, and both ends of the winding drum are axially supported at both ends of the shutter case so as to be able to move axially in two directions of front and rear and up and down. The upper end of the wall is extended above the center level of the take-up drum in the shutter case, and the outer periphery of the screen roll is always in contact with the vertical guide rail guide groove wall by axial movement, and the screen is always moved up and down along the tangential direction directly below and expanded. The vertical level of the vertical edge of the screen being drooped is adjusted by moving the winding drum up and down to adjust the horizontal level. That.

Further, an end portion of the winding drum and a pulley are additionally provided, and an endless operation code is wrapped around the end portion. The rotational force transmitted to the winding drum via the pulley by pulling down the operation code is reduced. The slat screen can be opened and closed with a small amount of operation force as it becomes an external force that disturbs the balance between the upwardly biasing force of the torsion spring that is automatically amplified and the torsion spring that is amplified. It is intended to prevent the amplification of metal noise caused by pushing up at an accelerated speed from above and taking up and housing.

Further, a flat engaging bar material having a C-shaped cross section with a lip is fixed to the upper end slat of the slat screen which is extended and hung from the inside of the room. A cloth screen is detachably engaged, that is, a flat resin hoop is adhesively bonded to the upper end of the cloth screen, and this hoop is detachably fitted together with the screen into the C-shaped cross-sectional groove of the engaging bar material to form a cloth screen. Hang the bottom of the slat screen with the bottom rail fixed at a height higher than the width of the bottom timber of the slat screen, and hang the metal screen with the slat screen. It is used as a cushioning material at the time of mutual collision.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Since the present invention has the above-described configuration,
In implementation, the slat screen is always guided along a smooth curved tangential trajectory in the shutter case by protruding and extending the flexible cushioning material into the guide track lacking portion,
The contact of the upper end of the vertical guide rail with the funnel opening is reduced, the generation of noise is prevented, and the slat is prevented from being bent and anchored in the above-mentioned lack of the guide track, and the cylindrical hinge of the slat is formed into a slit-shaped opening. Since these adjacent slats are fitted so as to enclose each other as an elliptical cylindrical hinge having the following, the slats cannot be bent in the direction opposite to the winding direction due to the surface contact. Furthermore, the diameter of the winding drum can be reduced, and the shutter case for accommodating the winding drum can be reduced in size.By disposing a pulley at the end of the winding drum, the slat screen can be easily moved up and down.
At the same time, noise generated by winding can be prevented.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the outline of the present invention will be described. As shown in FIG. 6, mohair which is a flexible cushioning material inserted and arranged in a guide groove wall on the outer peripheral side of a screen roll (1R) of a guide rail (3). (7) is extended from the funnel opening and extended around the outer periphery of the screen roll (1R), and the balance weight (8) is fixed at the tip to be hung down. The mohair ( 7) is bridged, the curved track is connected endlessly to the guide rail straight track, and the slat screen (1S) is guided smoothly along the tangential track. In addition to preventing or reducing the occurrence of metallic noise due to collision with the screen, the screen is prevented from being bent and moored to cause opening and closing obstacles. The balance weight (8) can be replaced with a coil spring and the coil spring can be fixedly connected to the shutter case.

Next, the slat structure as the means of claim 2 will be described. As shown in FIG. 7, the conventional structure slats having a structure in which concentric circles are distorted to cause play in the vertical and out-of-plane directions and the concentric circles are distorted and hinges (9) and (10).
When a collision occurs, a metal impact sound is generated, and the hinges (9) and (10) are supported not by the concentric circles but by the tangential lines. When slats are bent and an external force such as wind pressure is applied, the slats integrally resist the external pressure after the play is eliminated.

The slat of the present invention has an elliptical cylindrical hinge (A) having a slit-shaped opening as shown in FIG.
(B) is a slat (14) with respect to the slat (14) surface.
The openings are formed so as to be in the same direction, respectively, near the inner peripheral surface around which the wire is wound, and the distal ends of the elliptical cylindrical hinges are further formed on the cylindrical hinges (a) and (b). . When the slat (14) is wound, the cylindrical hinge (b) rotatably encloses the cylindrical hinge (a), and when the slat (14) is extended down, the cylindrical hinges (a) and (b) are connected. The elliptical cylinder (A) is pivoted about the center, and the outer peripheral arc (D) is detachably press-fitted to the inner peripheral arc (C) of the mating hinge.

The cylindrical hinge (b) naturally has a play (δ1) to enclose the cylindrical hinge (a).
When the slat (14) is turned from the bent state to the vertical state, the lower surface of the circular arc (D) slides on the upper surface of the circular arc (C), and at the same time, the cylindrical hinge (a) becomes the cylindrical hinge. (B)
And the play between the hinges (A) and (B) becomes extremely small. This slight play (δ2) causes a slight twisting or bending in the longitudinal direction of the slat (14). Is absorbed, and rattling in the vertical direction between adjacent slats is locked.

The hinges (A) and (B) are in contact with the cylindrical hinges (a) and (b) at cylindrical arcs (C) and (D), and are supported by the two-point support. The joint strength is higher than that of the conventional slat-like tangential support structure, eliminating the need to add bending reinforcement as with the conventional slats. It also has the effect of reducing dirt due to dust adhesion. In addition, when the expanded screen is pushed up and wound up, the conventional slats with a lot of play have the disadvantage that the lower slats are only compressed and lifted, and the force is not transmitted to the upper side and the operation is heavy. However, since the slat screen of the present invention has no play in the vertical direction, the lifting force from below is directly transmitted to the vicinity of the winding drum, so that the slat screen has the effect of being wound up with a slight force. is there.

Further, the winding drum according to claim 3 of the present invention,
And the shutter case. FIG. 2 is a longitudinal sectional view showing a state in which a shutter case (30) is detachably stored in a storage pocket (17) formed at an upper end portion of an aluminum sash. The storage pocket (17) is a sash upper frame (16). And a middle frame (15), and a cover (18) is detachably fitted and fixed to the front opening portion. (19) is a hollow aluminum pipe, which is a winding drum, which is compacted to the same diameter (φ40 mm to 45 mm) as the support shaft for supporting the winding drum, and whose both ends are rectangular shaft moving plates (20). Is rotatably mounted on the shaft. The shaft moving plate (20) is fitted together with a bearing (22) into a rectangular slot (21a) of the guide support plate (21), and is slidable back and forth. Numeral (23) is a tension spring, both ends of which are fixed to a shaft moving plate (20) and a guide support plate (21), and the shaft moving plate (20) is structured to be always drawn forward. The guide support plate (21) is vertically movably fitted to the bracket (31) at both ends of the shutter case, and the lower side thereof has a convex slope (25) of a sliding piece (25) arranged to be able to move back and forth in the plane of the bracket (31). A concave slope (28) is supported in contact with 27).

An adjusting screw hole (2) which is inserted through the screw hole of the bracket (31) and is secured to the sliding piece (25).
When the screw (24) is turned by inserting a screwdriver into the screw hole, the sliding piece (25) is moved back and forth by screw feed, so that it is guided and supported along the slope (27). The plate (21) is moved up and down, so that the horizontal level of the winding drum (19) can be adjusted. (29) is a vertical guide rail which slides and guides both ends of the slat screen (14s) and is detachably fixed to the sash vertical frame, has a C-shaped cross section guide groove (29c), and has a guide groove (29c). ) Mohairs (32) are arranged around both walls. Outer guide groove wall (29
a) is a winding drum (1) in a shutter case (30).
The slat screen (14) extended to a height higher than the center level of (9) and wound on the winding drum (19).
The outer periphery of the roll of s) is always supported in contact.

Since the shutter of the present invention has the structure as described above, when the slat screen (14s) is extended and hung, the shaft moving plate (20) is pulled as the outer circumference of the screen roll (14R) becomes smaller. The spring (23) is drawn forward (to the right in FIG. 2), the outer periphery of the screen roll is supported by the guide rail guide groove wall (29a), and the slat screen (14s) is always extended and lowered along the downward tangent. You. Conversely, when the slat screen (14s) is wound up and stored, as the outer circumference of the screen roll increases in diameter while pressing the guide rail guide groove wall (29a), the shaft moving plate (20) moves the shutter case (30).
Retreat to the center (left side in FIG. 2).

FIG. 3 is an exploded perspective view of FIG. 2 including the shutter case (30). In the shutter case (30), the brackets (31L) and (31R) are angled (3).
3) and (34) are connected and fixed. A slit (19s) is formed on the inner peripheral surface of the winding drum (19), and a torsion spring (37) having spring terminals (35) and (36) fixed at both ends is inwardly housed on both sides of the winding drum. , One side of the spring terminal (3
In 5), the ridge (35a) is hook-engaged with the slit (19s), and the other spring terminal (36) rotatably supports the winding drum (19). The tip shaft (36a) of the spring terminal (36) is connected to the winding drum (19).
It protrudes from both ends and is axially supported by an axial hole (20a) of the axial moving plate (20). A square hole (36b) into which the square shaft (39) of the crank handle (38) is fitted and an engaging piece (40) for restraining idling are detachably fitted to the tip shaft (36a). Slit (36c)
Is formed.

The shaft moving plate (20) is also provided with a slit (20c) in which the engaging piece (40) is removably fitted, and the engaging piece (40) is formed in the slit of the tip shaft (36a). (36c) is fitted over the slit (20c) of the shaft moving plate (20), and the tip shaft (36a) is restrained from idling.

Before the engaging piece (40) is fitted to the winding drum (19) having the above structure, the entire slat screen is wound, and then the angular axis (39) of the crank handle (38) is moved to the tip axis (36a). The torsion spring (37) is pre-wound to give an urging force, and the engaging piece (40) is fitted into the slits (36c) and (20c) to screw. Then, when the crank handle (38) is pulled out, the shutter assembling work is completed. In addition, the pre-winding of the torsion spring (37) balances or slightly applies the own weight of the slat screen (14s) which is spread and suspended and the urging force of the torsion spring (37) which is amplified accordingly. The power rises and the slat screen (14
s) is an operation for adjusting the urging force for lightly winding.

FIG. 4 is a perspective view of a structure in which a pulley through which an operation code is extended is added to the shutter shown in FIG. 3, and the slat screen (14s) can be opened and closed by pulling down the operation code. Torsion spring (3
The spring terminal (41) fixed to 7) includes an enlarged shaft portion (41a) and a small diameter shaft portion (36a), and the enlarged shaft portion (41a) rotatably supports the winding drum (19). The small-diameter shaft portion (36a) penetrates the boss (42a) of the pulley (42) to support the shaft, and the tip is supported by the shaft hole (20a) of the shaft moving plate (20) as described above. The pulley boss (42a) is removably fitted to the take-up drum (19), and a ridge (42b) formed on the outer peripheral surface of the boss is fitted to a slit (19s) on the inner peripheral surface of the take-up drum. (42) and the idle rotation of the winding drum (19) are restrained,
The pulley (42) rotatably supported by the spring terminal (41) is rotated integrally with the winding drum.

Since the weight of the slat screen (14s) extended and suspended from the winding drum (19) and the urging force of the torsion spring (37) are set so as to be substantially balanced, the winding drum (19) is slightly reduced. The balance is broken by an external force, and the opening and closing operation of the slat screen (14s) is obtained by the pulling-down operation of the operation code (43) applied to the pulley (42). Therefore, even when the shutter case (30) is arranged at a high place where it cannot be reached, the shutter opening / closing operation can be easily performed by the operation code hanging down from the lower side, and it is more effective than the operation of pushing up the slat screen (14s) from below. Even if the slat is less bent and the urging force of the torsion spring (37) is degraded, the slat can be smoothly wound up without generating a metal impact sound.

FIG. 5 is a cross-sectional view including a slat screen (14s) relating to the metal impact sound generation preventing device of the fifth aspect. When the slat screen (14s) is fully opened, a flat engagement bar (44) material having a C-shaped cross-section guide groove (44c) with a lip is provided on the slat (14) surface exposed to the indoor side below the shutter case. Fix with adhesive etc.
A resin flat bar (45) in which the upper edge of a polyester cloth screen (46) is adhered with double-sided tape is detachably fitted into the guide groove (44c) so as to sandwich the cloth screen (46). A bottom rail (48) is fixedly suspended from the lower edge of the cloth screen (46) at a position close to the baseboard (47) at the lower end of the slat screen.
The cloth screen (46) has a space between the vertical guide rails on both sides and is detachable so as to make the structure easy to clean. Therefore, the cloth screen (46)
The slat screen (14s) is wound around the winding drum (19) in two layers together with the slat screen (14s).
At the moment when s) is wound up, it becomes a cushioning material for preventing collision between metal slats, thereby preventing or mitigating the generation of metal impact sound. In addition, the cloth screen (46) reduces the hard feel of the metal slats when the shutter is expanded and used, reduces the radiant heat in the summer, and increases the heat flow resistance by the air layer between the metal screens in the winter to increase the heat insulation effect. improves.

[0036]

As described above, since the shutter of the present invention is constructed, the slat screen is smoothly guided and guided to prevent or reduce the generation of metal noise.
The slat screen and the cloth screen stretched in two layers on the indoor side have the effect of increasing the heat insulation effect and reducing the hard appearance peculiar to metal. Is further reduced. In addition, since it is expanded and suspended in a single plate without bending like a conventional slat, the joining strength between each slat is improved, and play in the vertical direction and out-of-plane direction is locked, The squeak between the slats is eliminated. Furthermore, the slat screen is always moved up and down along the tangential trajectory in the direct downward direction by the axial movement of the winding drum in the front-rear direction and the horizontal level adjustment in the vertical direction, so that the verticality of the screen vertical edge can be easily adjusted. Smooth opening / closing operation is obtained, and the screen roll that is compactly wound around the winding drum and the shutter case that accommodates the screen roll are also compact, so that they fit easily into the wall and transport efficiency is improved. Therefore, it has remarkable effects such as cost reduction.

[Brief description of the drawings]

FIG. 1 is a sectional view of a slat of a shutter according to the present invention.

FIG. 2 is a longitudinal sectional view of a shutter case portion of the shutter according to the present invention.

FIG. 3 is an exploded perspective view of a shutter according to the present invention.

FIG. 4 is an exploded perspective view of the shutter according to the present invention, similarly to FIG. 3;

FIG. 5 is a longitudinal sectional view of a slat screen of the shutter according to the present invention.

FIG. 6 is a schematic side sectional view of the present invention.

FIG. 7 is an explanatory view of a conventional slat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slat 1S Slat screen 1R Screen roll 2 Upper funnel opening 3 Vertical guide rail 4 Winding and drum 5 Shutter case 6 Space lacking guideway 7, 32 Mohair 8 Balance weight 9 Cylindrical hinge 10 Cylindrical hinge 11, 12 Bending part 14 Slat 14s Slat screen 15 Middle frame 16 Upper frame 17 Storage pocket 18 Cover 19 Winding drum 19s Slit 20 Axis moving plate 20a Axis hole 21 Guide support plate 21a Square hole 22 Bearing 23 Pull spring 24 Adjustment screw 25 Slide piece 26 Screw hole 27 Convex slope 28 Concave slope 29 Vertical guide rail 30 Shutter case 31R, 31L, bracket 33, 34 Angle 35 Spring terminal 35a Convex ridge 36 Spring terminal 36a Shaft 37 Torsion spring 38 Crank han L 39 Square shaft 40 Engagement piece 41 Spring terminal 41a Enlarged shaft part 42 Pulley 42a Pulley boss 42b Convex ridge 43 Operation code 44 Engagement bar 44c Guide groove 45 Flat bar 46 Cloth screen 47 Baseboard 48 Bottom rail a, b Cylindrical hinge A, B Elliptical hinge C Inner arc D Outer arc δ1, δ2 Play play

Claims (5)

[Claims] 1. A mohair or the like disposed on a vertical guide rail in a space between an outer periphery of a slat screen roll wound around a winding drum and an upper end of a vertical guide rail, that is, a space lacking a guide track of a slat screen. The flexible cushioning material protrudes and extends from the upper end of the vertical guide rail, extends around the outer periphery of the screen roll, makes a half circumference, and has a balance weight fixed to the leading end and a hanging or connecting coil spring to the inner wall of the shutter case. An endless slat screen guide track that is continuous from the outer peripheral surface of the screen roll to the vertical guide rail is provided, and the slat screen is always guided along a smooth curved tangent track in the shutter case, thereby providing the guide track. The slats bend in the lacking space, preventing the generation of metal noise due to bending and mooring, or preventing obstacles to opening and closing operation A steel wind-up shutter. 2. A slat screen to which steel slats are continuously joined, wherein each slat has cylindrical hinges having an elliptical cross section at both longitudinal edges of the slat wound on a winding drum with respect to the slat surface. And a slit-shaped opening at the end of the elliptical cylindrical hinge, and the cylindrical hinge is formed so that the opening is in the same direction. The cylindrical hinge on one side is fitted so as to enclose the cylindrical hinge on the other side, and when the slat is extended from the wound state, the outer peripheral arc of one elliptical cylindrical hinge is set to the other. The inner arc surface of the hinge is detachably adhered to the inner arc surface, the lower surface of the outer arc is landed on the upper surface of the other inner arc, and the cylindrical hinge is slightly pushed up in the hinge to reduce play and further have an elliptical shape. Surface contact between the inner and outer peripheral surfaces of the cylindrical hinge The hinge on one side restricts the rotation of the hinge on the other side, that is, each slat is connected like a single metal plate that is not bent in the opposite direction to the direction in which it is wound without bending like a chain. A slat screen with a steel winding shutter. 3. A hollow steel pipe is used as a winding drum, and a torsion spring is inscribed from both ends of the winding pipe, and the leading end is engaged so as to transmit an urging force, and is fixed to the other end of the torsion spring. The spring terminal rotatably supports the end of the winding drum and its extension is non-slidably mounted on a rectangular moving plate for axially moving the winding drum back and forth. This moving plate is fitted to a guide support plate having a rectangular hole that can be freely fitted, and the take-up drum is fitted to a bracket fixedly disposed at both ends of the shutter case so that the take-up drum can move up and down. In addition, fine adjustment of the horizontal level of the winding drum is possible, and the upper end slat of the slat screen is fixed and wound, and a guide groove having a C-shaped cross section for slidingly guiding both end edges of the slat screen is provided in the vertical direction. Provided on both sides of the guide rail, the upper end of the guide groove wall on the outer peripheral side of the slat screen extends to a height higher than the center level of the winding drum in the shutter case, and the outer periphery of the screen roll always contacts the guide groove wall by the axial movement of the winding drum. A steel winding shutter in which the slat screen is expanded and wound in the tangential direction immediately below, and the vertical degree of the vertical edge of the slat screen which is also expanded and lowered can be adjusted by the horizontal level adjustment mechanism of the winding drum. . 4. The diameter of the spring terminal that supports the take-up drum is reduced, and the spring terminal is inserted into a hollow boss integrally projecting from the pulley, and the pulley boss is axially mounted on the take-up drum so that it cannot rotate idly. The end of the spring terminal that supports the shaft is non-slidably mounted on the movable plate, and the rotational force transmitted to the pulley and the winding drum by the pull-down operation of the endless operation cord applied to the pulley expands. As the slat screen's own weight and the external force that breaks the balance of the torsion spring urging force amplified with it, the slat screen is vertically opened and closed, and the rotational operation force of the pulley and the urging force of the torsion spring The steel wind-up shutter according to claim 3, which facilitates opening and closing operations of a shutter disposed at a high place. 5. A flat cloth bar having a C-shaped cross section with a lip is fixed to the inside of an upper end slat of a slat screen which is extended and hung from a winding drum. A flat hoop is fixed to the upper end edge, and this is detachably engaged with the C-shaped cross-sectional guide groove of the engaging bar material, and the cloth screen is hung down. This cloth screen is wound around the take-up drum in two layers together with the slat screen, and a steel wind-up shutter that prevents metal slats from directly colliding with each other to generate metal noise is created. .