KR20000018186A - Force winding up shut - Google Patents

Abstract

PURPOSE: A steel winch shutter prevents noise by guiding a slotter screen along a connection orbit of a smooth curve in a shutter case all the time, and also prevents hanging of the slotter in a lack part of a space guide orbit. CONSTITUTION: A shutter prevents the generation of metal noises by guiding a slotter screen smoothly, increases an insulation effect of a screen established in two layers with the slotter screen inside, also has an effect for releasing a hard appearance of metal and when winching, it is winched as double layers to tone down metal noise. Because the shutter is expanded as one plate shape, bonding strength between slotters is improved. Also, hanging of a diversion sill upward and to face escaping direction releases the generation of noise between slotters. Due to enabling to control a vertical degree of a screen vertical direction, a user obtains a smooth opening/closing operation.

Description

Forced winding shutter {Force winding up shut}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention mainly relates to a forced winding shutter which can be disposed in a building opening such as a house or a low-floor electric gun.

Conventional shutters can be roughly classified into heavy shutters with large openings with thicker Styropole Homming slotters and lightweight shutters with slenders made of light aluminum extrusion. The slotter of such a shutter has an S-shaped cross section, that is, a cylindrical hinge having an opening on the slotter at the edge of the slotter is formed so that the openings are opposite to the backside and the surface of the slotter surface, respectively, so that adjacent cylindrical hinges can be dragged to each other. It is guided to the circumference of the hinge relative to the opening and inserted into and fitted to the fixed portion concentrically, and is composed of a chain chain-shaped slotter screen to bend only in the outer side of the surface.

However, such a conventional shutter is in widespread use, and metal noise is generated at the time of opening and closing operation. Especially when used as a substitute for the outsole of a house, this metal noise is generated during quiet time. This is often due to the relationship between the slotter structure of the shutter and the winding drum structure. In addition to this cause, since the shutter case is disposed at a high place where the hand cannot reach, there is a hassle to use the operation panel when pulling down and closing the slotter screen.

In addition, when the force of the winding spring of the winding drum is weakened, it has to be accelerated and pushed up and stored at the same time by accelerating from the lower side of the slotter, and at this time, the metal noise is further amplified. This problem is also attributable to the structure of the slotter, the winding drum, the shutter case for storing the same, and the shutter structure composed of these three members. And since the outer diameter of the screen roller of the slotter screen wound around the winding drum of the conventional structure is large in size, the outer size of the shutter case for accommodating it is also inevitably increased. In addition, the mounting position of the vertical guide rail for guiding the slotter screen, the positional relationship between the shutter case and the screen roller and the slotter structure are closely related to the cause of the metal noise.

That is, the longitudinal guide rail may be positioned downward within the size range of the outer diameter of the screen roller outer diameter in the shutter case positioned upwardly on the wall surface, and may be positioned at the outer side of the screen roller with respect to the bar of the guide groove of the longitudinal guide rail thereof. The downward tangent of the slotter screen, which is drawn out and becomes dirty, does not coincide and changes left and right with respect to the guide rail according to the increase and decrease of the size of the outer diameter of the screen roller. For this reason, the slotter constituting the slotter screen needs to be bent in two directions: the direction in which the guide rail is wound on the winding drum in the upper space of the guide rail and the direction in which the guide rail is guided to the upper inlet of the guide rail.

In addition, there may be a case where the slutter screen on the wall of the shutter case and the longitudinal guide rail serves as two winding directions, either outer or inner, with respect to the winding drum. The slotter as described above has a structure bent in both directions. The slotters described above have the same cylindrical hinges on both ends of the slots, and the same cylindrical hinges are formed on the surface and the rear surface with respect to the slotter surface. The slotter, which is composed of a continuous slotter screen with the inner circumferential surface and the outer circumferential surface contacted with each other by the concentric circumference so as to be mutually embraced by introducing a cylindrical circumference, has a chain structure that can be bent in both directions.

And it is impossible to maintain concentric circles between the cylindrical hinges, and each slotter is formed in the hinge portion of the gap between the vertical direction and the out-of-plane direction. At this time, the cylindrical hinges protrude from each other to generate metal noise. Cylindrical hinges in which the concentric circles are collapsed are constructed such that adjacent slotters are continuously bent and easily bent by a line connecting system along one point of the circumference, that is, the tangent line. In other words, the two hinges cannot restrain the rotation of the other hinges because the two hinge points do not exist in the fitting structure between the cylindrical hinges.

Therefore, when the out-of-plane pressure such as Pungam is loaded on the expanded slotter screen, the slotter is bent along sideways because it cannot load concentric circles, and the flow jaw is resolved and the adjacent slotters are integrated together to resist external forces. Each slotter of the slitting of each unit requires a certain flexural strength, because there is a problem that the curved surface strength of the whole slotter screen is weakened due to a slight bent portion. For this reason, it is common for each slotter to form a bent portion at another part of the cylindrical hinge and to reinforce it.

However, a number of uneven lines are formed in the slotter screen that is expanded and draped downward, and this uneven portion is not only a noise generating factor of the following description, but also has a closed end that is easily contaminated with debris.

In addition, the top of the longitudinal guide rail in the shutter structure is located below the outer edge of the screen roller including the winding drum in or under the shutter case, and the guide path of the slotter screen disappears between the top of the guide rail and the space between the outer edge of the screen roller. do. Therefore, a fan-shaped nutmeg is formed at the top of the guide rail, and the nutmeg is guided at an angle of inclination of the slotter screen, and when the screen is expanded and hoisted, the irregularities of the screen surface are in contact with each other and the metal noodle is continuously continually impacted with metal. To generate.

On the other hand, when the enlarged and lowered slotter screen is pushed up from below, the side force of the coil spring stored in the winding drum is lowered because the winding speed is lower than the winding speed pushed up from the bottom. In the space portion between the upper end of the guide rail and the screen roller, the slotter is bent and moored, causing trouble in the opening and closing operation and causing a failure.

Next, the winding drum structure, which is one of the factors of the above-described problems, and the shutter case for storing the same, will be described. In general, the winding drum of the conventional shutter is constructed as follows. That is, a support shaft having a strength that does not bend even when supporting the entire weight of the steel slotter screen and a plurality of drums which are pivotally supported on the support shaft are inserted into both ends and the center, and their drum circumferences are connected by a flat bar. At the same time, one end of the coiled spring inserted into the front shaft of the support shaft is fixed to the drum and the other end to the support shaft to fix the support shaft to the lid of both ends of the shutter case. And when winding the slotter screen to the winding drum of the structure, by holding the hand to the flat bar connecting the winding drum of the structure in advance to rotate the drum to store the sufficient force on the spring to the upper slotter of the slotter screen on the winding drum It is difficult to work because it has a structure that can be fixed and wound around the slotter screen.

In addition, the outer diameter of the shutter case that accommodates it is large because the outer diameter of the screen roller, which has a large outer diameter (generally 80 mm in diameter) and a screen roller that winds up the whole slotter screen, is large. Furthermore, since the support shaft holding the above-mentioned winding drum is fixed to the lid of both ends of the shutter case, the horizontal level depends on the accuracy of the installation of the shutter case. If the horizontal level of the support shaft is bad, both ends of the slotter screen, which are extended from the winding drum and draped downward, cannot be maintained at a vertical angle but are inclined in either direction with both longitudinal guide rails to contact the inner groove walls of the guide rails. There is a problem that the side of the slotter screen is rolled up and caused to interfere with the smooth opening and closing operation.

In addition, the shutter case having a large outer diameter may not be embedded in the upper wall of the building opening, so it is relatively protruded from the wall and is not good in appearance and worsens the aesthetics of the building. When the case is a molded product such as aluminum extruded shape, it is generally used as a thin sheet metal material such as color signage because of its large outer diameter, which causes inability to extrude or increase the cost.

However, thin sheet metal shutters with large flat parts are easily deformed under slight external pressure, and great care must be taken when carrying or installing them. Also, when rain water falls on the shutter case installed so that they do not protrude from the wall surface, rain noise is increased. There was a problem.

1 is a cross-sectional view of the shutter slotter of the present invention.

2 is a partial longitudinal cross-sectional view of the shutter case of the present invention.

3 is an exploded perspective view of the shutter of the present invention

4 is an exploded perspective view of another embodiment of FIG.

5 is a longitudinal sectional view of the screen of the shutter slotter of the present invention.

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

7 is an explanatory diagram of a conventional shutter slotter

* Explanation of symbols for important parts of the drawings

1-slotter 1S-slotter screen 1R-screen roller

2-top nutmeg 3-piece guide rail 4-winding drum

5-Shutter case 6-Without guide rail space

7,32-Mohai 8-Balance Wade 9,10-cylinder hinge

11,12-Bent 14-Slotter 14s-Slotter Screen

15-middle 16-top boot 17-storage pocket

18-Kava 19-Rolling Trum 19S-Slotter

20-axis moving plate 20a-axis 21-guiding support plate

21a-angle slot 22-bearing 23-pull elastic rod

24-Adjustment Screw 25- Slide 26-Threader

27-Extruded slope 28-Recessed slope 29-Plant guide rail

30-Shutter Case 31R, 3L-Bracked 33,34-Angle

35-spring terminal 35a-protrusion 36-spring terminal

36a-axis 37-coil spring 38-crank handle

39-angle 40-hook 41-spring terminal

41a-extension 42-fleley 42a-fleece

42b-protrusion 43-control code 44-engagement bar

44c guideway 45 flatbar 46-forge screen-in

47-Secondary rail fixing part 48-Secondary rail a, b-cylinder hinge

A, B-Ellipse hinge C-Inner circle D-Outer circle

δ1, δ2- clearance jaw

Therefore, the present invention extends the flexible cushioning material such as mohair, which is disposed in the longitudinal guide rail in the guide groove between the winding drum of the conventional shutter and the upper end of the longitudinal guide rail, protrudes from the upper end of the guide rail so that it is caught only at the outer circumference of the screen roller. The front end of the longitudinal guide rail is connected to the lower end of the longitudinal guide rail by installing a guide rail of the endless state so that the slotter screen is always guided according to a smooth curved connection track in the shutter case. The guide rail) is to prevent the metal noise caused by the connection to the noodle nut (funnel inlet) of the upper end and at the same time to prevent the slaughter from being caught in the lack of space guide track.

An elliptic cylindrical hinge having a slotter-shaped opening as a cylindrical hinge of the slotter is inclined toward the inner circumferential side so that the slotter is wound around the slotter drum at both ends of the slotter, and the opening is in the same direction as the adjacent slotters. Cylindrical hinges allow them to fully enclose in the same winding direction as the other elliptical hinges, forming a fitted slotter screen, and when these slotter screens extend down from the winding drum, the vertical gap between each slotter One side of the hinge restrains rotation in the outward direction of the hinge of the other by the surface contact of the inner and outer peripheral surfaces of the elliptical cylindrical hinges, so that each slotter is not bent in the opposite direction to the winding direction. It consists of a slotter screen.

In addition, the winding drum has a small diameter of the winding drum of the conventional structure so that the outer diameter of the screen roller for winding the slotter is also reduced in size, thereby compacting the shutter case containing the compacted aluminum compacted shape of the outer diameter of the winding drum. The shaft is supported on both ends of the shutter case so that the shaft can move in both forward and backward directions. The screen roller outer periphery is always in contact with the longitudinal guide rail guide groove wall by the axial movement, and the screen is always vertically tangled in the direction of the direct tangential direction. The life level adjustment can be performed. In addition, the end of the winding drum and the fleece is added to install an endless operation code thereon, the operation of lowering the operation code by the automatic operation of the slotter screen through which the rotational force transmitted to the winding drum via the plug can be increased and the winding amplified along with it. It is an external force that breaks the balance of the uplift force of the spring, enabling the opening and closing operation of the slotter screen as a slight operation force, and preventing the amplification of the metal noise by rolling up the slotter screen with an acceleration from below.

In addition, a flat engagement core having a "C" cross-section with reinforcing pieces is fixed to the upper slotter, which is a slaughter screen, which is to be extended and fixed, and a detachable screen made of synthetic resin such as polyester of both longitudinal guide rail gap widths is detached. Ie, a flat resin hoop is attached to the top of the sieve screen, and the hoop is detachably fitted to the "C" cross-sectional groove of the mating core together with the screen to drop the sieve screen and slot. Covering the indoor side of the screen, the bottom of the cladding screen is fixed to the lower end of the slotter screen, and the auxiliary rail is fixed at a height higher than the protective rail. It is intended to be a buffer material.

In practicing the present invention configured as described above, by extending the flexible cushioning material to the lack of guide track, the slotter screen is always guided along the smooth tangential orbit of the smooth sliding curve in the shutter case and connected to the noodle path at the top of the longitudinal guide rail. It is possible to prevent the generation of noise by slowing down the slotters to prevent bending mooring into the above-mentioned lack of guide orbit, and to allow the adjacent slotters to interpose these adjacent slotters by the cylindrical hinges of the slotters as the elliptical cylindrical hinges having the openings on the slotters. Since the fitting is securely fitted, the slutter due to the surface contact is not bent in the direction opposite to the winding direction. In addition, it is possible to miniaturize the winding drum and reduce the shutter case to accommodate the winding drum. Thus, by disposing the plug at the end of the winding drum, it is possible to easily operate the lifting and lowering of the slotter screen and to prevent the noise generated during the winding.

An embodiment of the present invention will be described with reference to the drawings, and as shown in FIG. 6, a mother buffer 7 made of a flexible buffer material inserted into and disposed on the guide groove wall on the outer circumferential side of the screen roller 1R of the guide rail 3 will be described. It protrudes from the nutmeg and hangs on the outer circumference of the screen roller (1R), and the baggage (8) is fixed to the three or four ends of the screen roller, and the mother hair (7) is caught in the lack of the genital guide orbit (6). Since the curved track is connected endlessly with the guide rail linear track, the slotter screen 1S is slidably guided along the connecting track, so that the screen irregularities on the nutmeg collide with each other to prevent or reduce the occurrence of metal noise. Simultaneously with the ship, the screen is flexed and moored to prevent obstruction. Furthermore, the coil spring may be fixedly connected to the shutter case by replacing the coil spring instead of the balance wade 8 described above.

The slotter of the conventional structure, which is a structure in which the concentric circle is broken and is opened in the up and down direction and the plane direction as shown in FIG. This breakage causes metal noise when the hinges 9 and 10 collide and coincide, and the hinges 9 and 10 are tangentially supported and not supported by the circumferential surfaces of the concentric circles, so that each slotter 1 When both sides are bent in the outward direction and the external force such as wind rock is loaded, each slotter is able to resist the external pressure by being integrated with the above clearance gap.

In the slotter of the present invention, as shown in FIG. 1, the elliptical cylindrical hinges A and B having the slotter-shaped openings are inclined to the wound inner peripheral surface of the slotter 14 with respect to the face of the slotter 14, respectively. The openings are formed in the same direction, and are further formed by cylindrical hinges a and b at the distal end of the elliptical cylindrical hinge. When the slotter 14 is wound, the cylindrical hinge (b) pivots freely on the cylindrical hinge (a), and when extended, the elliptical cylindrical hinge (A) rotates around the cylindrical hinge (a) (b). Thus, the outer circumferential arc D is tack-fitted so as to be detachably attached to the state hinge inner circumferential arc C. FIG.

Cylindrical hinge (b) is to have the clearance gap 81 to include the cylindrical hinge (a), but when the slotter 14 is rotated in a vertical state in the bent state, the lower surface of the circular arc (D) is a circular arc ( Ascending and sliding on the upper surface of the C) at the same time and slightly pressed upward in the cylindrical hinge (a) and the cylindrical hinge (b), the clearance gap between the hinge (A) (B) is extremely small, at this time the slight clearance gap 82 Is absorbed by a slight return bending in the longitudinal direction of the slotter 14, and the down jaws between adjacent slotters are locked.

In addition, the hinges (A) and (B) are connected as the cylindrical hinges (a) and (b) and as the cylindrical arcs (C) and (D), and have a structure in which their hinges are supported and joined together by a support force. Bonding strength is always better than tangential support structure like the conventional slotter, and there is no need to separate the bending reinforcement device like the conventional slotter, and the surface of the screen has a small unevenness and a smooth surface. It has the effect of preventing and mitigating fouling.

Furthermore, when the rolled up screen was rolled upward, the gap between the conventional slotters was large, and when the lower slotters corresponded to the accumulator pressure, the force was not transmitted to the upper end. Since the slotter screen does not have a clearance jaw in the up and down direction, the force of rolling up from below is directly transmitted to the winding drum, so that it can be lifted with a small force.

When the winding drum and the shutter case of claim 3 of the present invention are described, the shutter case 30 is detachably stored in the storage case 17 formed at the upper end of the aluminum chassis as shown in FIG. The containment cloth 17 is composed of the chassis upper frame 16 and the middle frame 15, and the cover 18 is detachably fitted and fixed to the front opening portion. The winding drum 19 is a hollow aluminum pipe. The winding drum 19 has a diameter equal to a support shaft for supporting the winding drum, which is the winding drum. The both ends are pivoted on the rectangular shaft moving plate 20. It is condensed. The shaft moving plate 20 is fitted to the respective long holes 21a of the guide support plate 21 together with the bearing 22 to slide back and forth. Both ends of the pulled elastic plate 23 are fixed to the shaft moving plate 20 and the guide support plate 21, and the shaft moving plate 20 is always pulled forward. The guide supporting plate 21 is fitted vertically to the bracket 31 at both ends of the shutter case, and the lower side thereof is disposed so as to be movable back and forth within the surface of the briquette 31, and the protruding inclined surface of the sliding piece 25 is provided. A concave inclined surface 28 is contacted and supported at 27.

In the sliding piece 25, an adjustment screw hole 6 having a locking hole penetrated by the screw hole of the briquette 31 is fitted to the screw, and when the screw 24 is rotated by inserting a screwdriver into the screw hole, Since the copper piece 25 is moved back and forth by screw feed, the guide support plate 21 moves up and down along the inclined surface 27, and the horizontal level of the winding drum 19 can be adjusted. The longitudinal guide rail 29 slides through both ends of the slide screen 14S and is fixedly fixed to the chassis bells and points to the "C" shaped cross-sectional guide groove 29c, and the guide groove 29c is formed on both walls. 32 is provided, and the outer shaft guide groove wall 29a extends in the shutter case 30 to a height higher than or equal to the center level of the winding drum 19, and that of the slotter screen 14s wound on the winding drum 19 is provided. The roller circumference is always in contact support.

In addition, the shutter of the present invention has the structure as described above, and when the slitter screen (14s) is expanded, the outer diameter of the screen roller (14s) becomes smaller so that the axial moving plate (20) pulls the elastic shaft (23). 2), the screen-in roller outer circumference is supported by the guide groove wall 29a of the guide rail and the slotter screen 14s is always extended along the downward tangent. On the contrary, when the slotter screen 14s is hoisted, the axial moving plate 20 becomes the shutter case 30 as the screen roller roller outer circumference is pressed against the guide wall 29a of the guide rail and largely cured (large diameter). Retreat to the center (left side of FIG. 2).

FIG. 3 is an exploded perspective view of FIG. 2 including the shutter case 30. The shutter case 30 has a structure in which the electric plates 31r and 31R are connected to and fixed by angles 33 and 34. As shown in FIG. A slotter 19s is formed on the inner circumferential surface of the winding drum 19, and the spring terminal 35, 36, which is fixed at both ends, internally receives the winding spring 37 on both shafts thereof, and at the same time a spring terminal ( The tuning 35a of 35 is fitted to the slotter 19s, and the other spring terminal 36 supports the winding drum 19 pivotally. A portion of the tip shaft 36a of the spring terminal 36 protrudes from both ends of the winding drum 19 and is axially supported by the shaft hole 20a of the aforementioned shaft moving plate 20. In addition, a slotter 36c is formed at a portion of the tip shaft 36a in which the angular hole 36b to which the angular shaft 39 of the crank handle 38 is fitted and the engagement surface 40 for restraining idle rotation are detachably fitted. In addition, the shaft moving plate 20 is formed with a slotter 20c in which the engagement surface 40 is detachably fitted, and the engagement surface 40 has a slotter 36c of the tip shaft 36a and a shaft moving plate ( 20 is fitted to the slotter 20c, but the front end shaft 36a is restrained from idle.

Before fitting the engagement surface 40 to the winding drum 19 of the above structure, all the slotter screens are wound and inserted into each hole of the tip portion 36a of each shaft 39 of the crank handle 38 to be rotated and wound springs. (37) is mirror-wound, and a biasing force is applied to fit the engagement piece 40 to the slotters 36c and 20c so as to be tightened with screws, and the crank handle 38 is pulled to complete the operation of the shutter. Furthermore, the mirror winding of the winding spring 37 equals the self-weight of the expanded load slotter screen 14s and thus the boosting force of the wound spring 37 amplified, and also exceeds the slight boosting force, and thus the slotter screen 14s. ) Is to adjust the subordinate forces that make it lightly hoisted.

Fig. 4 is a perspective view of a structure in which the slotter screen 14s is opened and closed operable by adding a plug to which the operation code of the shutter shown in Fig. 4 is applied and pulling down the operation code. The spring terminal 41 fixed to the winding spring 37 becomes an enlarged shaft portion 41a and a small diameter shaft portion 36a, and the enlarged shaft portion 41a pivotally supports the winding drum 19, and the small diameter shaft portion ( 36a is axially supported through the boss 42a of the plug 42, and the tip thereof is supported by the axial hole 20a of the axial movement plate 20 in the same manner as described above. Then, the plug boss 42a is detachably decompressed to the winding drum 19 so that the protrusion 42b formed on the boss outer circumferential surface is fitted to the slotter 19s on the inner circumferential surface of the winding drum, so that the plug 42 and the winding drum 19 The plug 42, which restrains idle rotation and is pivotally supported by the spring terminal 41, is rotated in unison with the winding drum.

In addition, the alarming force of the slitting screen 14s and the winding force of the winding spring 37 are set to be almost balanced, so that the winding drum 19 is not balanced when only a slight external force is applied. The opening and closing operation of the slotter screen 14s can be obtained by the lowering operation of the operation cord 43 caught by the plug 42. Here, even when the shutter case 30 is placed at a high place out of reach, the shutter opening / closing operation is easily performed by the operation code received up to the lower half, and the lower side of the slotter than the operation of rolling up the slotter screen 14s from below. There is little bending, and even when the biasing force of the winding spring 37 deteriorates, a metal shock noise does not generate | occur | produce and it is a smooth winding.

FIG. 5 is a view illustrating the metal impact noise generating apparatus of claim 5, wherein the reinforcing piece is attached to the surface of the slotter 14 exposed to the lower chamber shaft than the shutter case which was transferred when the slotter screen 14s was fully transferred. A flat engagement bar 44 material having a "shaped cross-sectional guide groove 44c is fixed with an adhesive or the like, and a double-sided tape is attached to the guide groove 44c at the top edge of the screen 46 made of polyester One synthetic resin flat bar 45 can be grounded with a forge screen 46 to be detachably fitted, and to a height close to the fixing part 47 at the lower edge of the slotter screen at the edge of the forge screen 46. It is fixed by the auxiliary rail 48. Since the forge screen 46 is wound on the winding drum 19 in two layers together with the slotter screen 14s, at the moment when the slotter screen 14s is wound up, it prevents the occurrence of impact noise between the metal slotters or the metal shock as a cushioning material. The occurrence of noise can be prevented or mitigated. In addition, the foam screen 46 softens the hardened texture of the metal slotter when the shutter is expanded, and at the same time, eases the adverb heat in the summer season, and insulates heat permeation resistance by the air layer between the metal screens in the winter season. Will increase the effect.

The shutter of the present invention configured as described above can smoothly guide and guide the slotter screen to prevent or reduce the occurrence of metal noise, as well as to insulate the foam screen installed with the slotter screen and two layers on the indoor shaft. In addition to the increase in the effect of relieving the hard appearance peculiar to the metal, it is also wound in two layers at the time of take-up, metal noise is further reduced.

In addition, as the conventional slotters do not bend and expand in a single sheet, the bonding strength between the slotters is improved, and clearance gaps between the slotters can be eliminated while the clearance jaws in the vertical direction and the out-of-plane direction are caught. . In addition, the scroller screen is always moved up and down in tandem with the tangential track in the direct direction, and the verticality in the screen longitudinal direction can be easily adjusted, so that a smooth opening and closing operation thereof can be obtained. In addition, the screen roller wound around the winding drum under a compactor and the shutter case for accommodating the same are also compact, and the storage efficiency is improved on the wall, and the transportation efficiency is also improved, thereby reducing the cost.

Claims (5)

A flexible cushioning material, such as a mother-child, which is disposed on a bell guide rail in the space between the outer circumference of the slotter screen roller and the top of the bell guide rail wound around the winding drum, that is, the lack of guide track of the slotter screen, protrudes from the top of the bell guide rail. It is wound on the screen roller by half, and the balance wade is fixed to the front end, and it is fixed to the inner wall surface of the shutter case by connecting the water drop or coil spring.The continuous stepless slotter screen from the outer peripheral surface of the screen roller to the longitudinal guide rail is fixed. The guide track is installed so that the slotter screen is always guided in a smooth tangential track in the shutter case, and the slotter can prevent the occurrence of metal noise or disturbance of opening and closing operation due to bending and bending mooring in the space without the guide track. Forced compulsion shutter. A slotter screen which allows a forced slotter to be continuously joined, each slotter having a cylindrical hinge on a cross-section ellipse at both ends in the longitudinal direction of the slotter, being formed on the shaft slightly inclined to an inner circumference of the slotter wound about the slotter face, respectively. At the end of the hinge, there is an opening on the slotter, and a cylindrical hinge is formed so that the opening is in the same direction, and the cylindrical hinges of one axis are fitted so as to cover the cylindrical hinge on the other side between adjacent slotters. When the outer circumferential arc of the cylindrical hinge on the one-axis ellipse is detachably attached to the inner circumferential surface of the other hinge, it is conceived on the lower surface of the outer circumferential arc and the upper surface of the other inner circumferential arc, and the cylindrical hinge is slightly pressed in the hinge to reduce the clearance The hinge of one side is burned again by the surface contact of the inner and outer circumferential surfaces of the elliptical cylindrical hinge. For constraining the rotation of the hinge means that each hoisting slotter is forced to be a shutter as the shutter associated with the winding force of the slotter screen as a piece of metal sheet being bent is not bent in a winding direction opposite to the direction in which no steps chains. A hollow steel pipe is used as a winding drum, and both ends of the winding spring are internally stored, and at the same time, the front end is engaged so that a bias force can be transmitted, and a spring terminal fixed to the other end of the winding spring rotates the winding drum end freely. At the same time as the shaft support, the extension part thereof is non-idally affixed to the movable plate for axially moving the winding drum back and forth, and the movable plate is fitted to the guide plate with the residual morphology, which is fitted with sliding motion. The guide drum is fixed to both ends of the shutter case, and the guiding drum is fitted to the upper and lower sides of the shutter case, allowing the slight adjustment of the life level of the winding drum, and also by fixing the upper slotter of the slotter screen. Guides of “C” shaped cross section that both edges are moistened on both sides of longitudinal guide rail The upper edge of the guide groove wall of the slotter screen is extended to a height higher than the center of the winding drum in the shutter case so that the outer edge of the screen roller is always in contact with the guide groove wall by the axial movement of the winding drum. And a vertical hoisting portion of the rolled-up slotter screen, which can be adjusted by a horizontal level adjusting mechanism of the winding drum. The spring terminal for axially supporting the winding drum is small-sized, and the spring terminal of the hollow boss a protruding integrally from the pleats is inserted to allow the plug boss to be pulled out of the hoisting drum so that the plug boss is not idle, and the plug boss is axially supported. It is a non-rotating contact with a moving plate that has a spring terminal part, and the slaughter screen self-weight and the amplified winding spring force amplify the rotational force transmitted to the plug and the winding drum by the reduction structure of the endless operation cord over the plug. Forced shutter that facilitates the opening and closing operation of the shutter placed on the height by the bias force of the winding spring by the slotter opening and closing operation of the slotter screen is up and down to break the balance of the. The upper part of the slotter screen extended from the winding drum is fixed with a flat engagement bar material having a "C" cross section with a reinforcing piece attached inside the slotter, and a flat hoop at the top edge of the cloth screen having a width of both longitudinal guide rails. ) And attach it detachably to the "C" type cross-sectional guide groove of the engagement bar material, and carry a sieve screen. At its lower edge, the height close to the auxiliary rail fixing part of the slotter screen is fixed to the auxiliary rail. Thus, the sieve screen is wound on a winding drum in two layers together with a slotter screen, and a forced hoist shutter which prevents the generation of metal noise by direct collision between metal slotters.