CN1138053C - Sheet type rolling curtain device - Google Patents

Abstract

The object of the present invention is to allow the end of the roller blind to disengage from the guide rail when the load acting on the roller blind exceeds a predetermined value, and to enable the disengaged roller blind end to be easily pushed back into the guide rail. The sheet type rolling door includes a rolling shutter; a plurality of guide blocks arranged at opposite left and right ends in the width direction of the rolling shutter with intervals in the vertical direction; and elastic guide rails vertically arranged on the left and right sides of the opening of the building, And under normal conditions, guide the vertical movement of the guide block. When the load acting on the roller blind exceeds a predetermined value, the guide rail is deformed to such an extent that the guide block is detached from the guide rail.

Description

Sheet roller blind device

The present invention relates to a sheet type roller blind device, and more particularly, to a sheet type roller blind device which disengages the end of the sheet from a guide rail when the load acting on the sheet exceeds a predetermined value.

Sheet roller blind devices are used to open and close building openings by using sheet roller blinds. It is pointless to install a roller blind device if the ends of the roller blind can easily come off the guide rails with the opening fully closed. Therefore, in some sheet-type roller blind devices, engaging portions are formed at the left and right ends of the roller blind, and the engaging portions are slidably engaged in the guide rails so that both ends of the roller blind can be pressed against the expected surface. It will not fall off the guide rail.

However, since the sheet type roller blind is weaker than a steel roller blind or the like, if the force acting on the roller blind exceeds its wind pressure value, the following problems arise. Forcing the engaging portion formed at the side end of the roller blind from the guide rail may damage the side end of the roller blind. In another case, the roller blind was bent to such an extent that it caused damage to the rails.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems, and its object is to provide a sheet type roller blind device which prevents damage to the ends of the roller blind and the guide rails even when the load acting on the roller blind exceeds a predetermined value.

Another object of the present invention is to provide a roller blind in which the ends of the roller blind satisfactorily withstand the surface pressure acting on the roller blind and keep it from dislodging from the guide rails under normal conditions of use.

Still another object of the present invention is to provide a sheet type roller blind device, which allows the end of the roller blind to part off the guide rail.

Another object of the present invention is to provide a sheet type roller blind device, wherein when the end of the roller blind is separated from the guide rail due to the load acting on the roller blind exceeding a predetermined value, the end can be easily returned to the guide rail .

The technical means of the present invention for realizing the above-mentioned object is: the sheet type roller blind device comprises a sheet roller blind; A plurality of guide blocks, they are arranged on the relative left end and the right end of the roller blind width direction, and the roller blind has intervals in the vertical direction. ; also includes guide rails, which are vertically arranged on the left and right sides of the opening of the building; wherein, under normal conditions, the guide blocks can move vertically in the guide rails, and the guide rails are elastic, and when the load acting on the roller shutter exceeds a predetermined When the value is higher, the guide rail is deformed to such an extent that the guide block is detached from the guide rail.

Using the above structure can prevent the ends of the roller blind from being damaged, and can also prevent the guide rail from being damaged.

In addition, in the above-mentioned sheet type roller blind device of the present invention, each guide block has an engaging surface abutting against the inner wall of the guide rail, so that, by virtue of the engagement between the engaging surface and the guide rail, the surface acting on the roller blind can be borne. pressure.

Furthermore, in the above sheet type roller blind device, the upper and lower portions of the engaging surfaces of the respective guide shoes may have some curved inclined surfaces, so that the guide shoes are more likely to come off the guide rails when the load acting on the roller blind exceeds a predetermined value.

In addition, in the above-mentioned sheet type roller blind device, the surface of each guide block opposite to the engaging surface forms a vertically extending rear portion having an inclined projected section so that The guide block is pushed back into the guide rail from its rear. For this structure, the guide block that has broken away from the guide rail can be pushed back into the guide rail.

In addition, in the above-mentioned sheet type roller blind device, an inclined guide surface may be formed at the opening of the guide groove of the guide rail, so that the guide block that has been detached from the guide rail can be pushed away while being guided by the inclined guide surface. Back inside the rails.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic front view showing a sheet roller blind device in a fully opened state;

Fig. 2 is a side view of the sheet roller blind device in an installed state;

Figure 3 is a cross-sectional view of the rail assembly detailing the upper guide;

Figure 4 is a cross-sectional view of the guide rail assembly showing the guide rail in detail;

Figure 5 is a cross-sectional view of a partially omitted rail assembly showing seal and bushing nut arrangements;

Fig. 6 (a) is the sectional view of guide rail, and Fig. 6 (b) is the sectional view of guide rail fixture;

Figure 7 is a side view and a front view of the rail fixture.

Figure 8 represents the upper guide; Figure 8 (a) is a top plan view, Figure 8 (b) is a front view, Figure 8 (c) is a side view, and Figure 8 (d) is a bottom view;

Figure 9 shows the rail assembly; Figure 9(a) is a front view and Figure 9(b) is a side view.

Figure 10 is a front view of the roller blind;

Fig. 11 shows guide block; Fig. 11 (a) is a side view; Fig. 11 (b) is a rear view; Fig. 11 (c) is a side view of the opposite side, Fig. 11 (d) is a front view, Fig. 11 (e) is Horizontal sectional view, Figure 11(f) is a vertical sectional view, and Figure 11(g) is a top plan view.

Fig. 12 shows the lower end of the roller blind; Fig. 12(a) is a side view, Fig. 12(b) is a front view of one end side, and Fig. 12(c) is a general front view of the lower end of the roller blind.

Fig. 13 shows the bottom counterweight; Fig. 13(a) is a partially cut-away front view, and Fig. 13(b) is a top plan view.

Figure 14 is a partial front view of the sheet roller blind device showing the position of the guide blocks in the fully rolled up state of the roller blind.

Figure 15 shows another embodiment of the means for pushing the guide block into the guide rail, wherein the guide rail has different characteristics.

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic general front view showing a sheet-type roller blind device in a fully opened state, and FIG. 2 is a side view of the sheet-type roller blind device in an installed state. The sheet-type roller shutter device includes a pair of guide rail assemblies 1 vertically arranged on the left and right sides of the building opening, a roller shutter box 2 arranged at the upper end of the building opening, and a roller shutter box 2 arranged in the roller shutter box 2 along the width direction of the opening. An extended film reel 3 and a roller blind 4 connected to the reel 3 .

The left and right ends of the roller blind 4 are accommodated in the guide grooves of the guide rail assembly 1 . When a switch device is operated to open or close the roller shade device, the roller shade 4 moves vertically while the left and right ends of the roller shade are guided by the guide grooves. The roller blind 4 is rolled up around the film shaft 3 or unrolled from the film shaft 3 by vertical movement. This general structure of leaf roller blind devices is well known in the prior art.

The structure of the guide rail assembly will be described below with reference to FIGS. 3 to 9 . The guide rail assembly 1 includes a guide rail 5 , a guide rail fixing member 6 , a first guide rail cover 7 , a second guide rail cover 8 and a guide rail sealing member 10 .

The guide rail 5 is a vertically extending elongated part. As shown in Fig. 4 and Fig. 6 (a), guide rail 5 comprises opposite sidewall 5a, 5b; The front wall 5d extending along opposite direction from one end of sidewall 5a, 5b, forms a vertically extending line on the front wall a slit 5c; a rear wall 5e connecting the other ends of the side walls 5a, 5b; and an engageable rib 5f protruding from the rear wall 5e. In the guide rail 5, the cross section of the space surrounded by the walls 5a, 5b, 5d and 5e is substantially rectangular. The guide rail 5 is made of elastic material such as resin. When the applied force exceeds a predetermined value, the guide rail 5 deforms to such an extent that the width of the slot 5c increases. Furthermore, the thickness of the front wall 5d is greater than the thickness of the side walls 5a, 5b.

The guide rail fixing member 6 is also an elongated part extending along the vertical direction. As shown in FIG. 4 and FIG. 6(b), the rail fixing member 6 has opposite side walls 6a, 6b and a connecting wall 6c connecting the middle portions of the side walls 6a, 6b. Therefore, the guide rail fixing part 6 has a substantially H-shaped cross section. An engageable receiving portion 6d is formed on one side of the connecting wall 6c and extends lengthwise, and a receiving portion 6e for receiving the head of one end of the bolt (the bolt is a part of a spring assembly) is formed on the connecting wall 6c. the other side and extend along the length direction. The engageable rib 5f of the guide rail 5 is fitted in the engageable receiving portion 6d of the guide rail fixing member 6 so as to be slidable in the length direction. In this embodiment, the rail holder 6 is made from a strip of formed aluminum rod.

Both the first guide rail cover 7 and the second guide rail cover 8 are elongated parts extending in the vertical direction. The first rail cover 7 has a thickness wall 7a extending in the thickness direction, a width wall 7b extending in the width direction from one end of the thickness wall 7a, and an end wall 7c formed at the extended end of the width wall 7b and having an L-shaped cross section. . The second rail cover 8 has a thickness wall 8a extending in the thickness direction, a width wall 8b extending in the width direction from one end of the thickness wall 8a, and an end wall 8c formed at the extended end of the width wall 8b and having an L-shaped cross section. . End walls 7 c , 8 c are cut obliquely at the tops of the first rail cover 7 and the second rail cover 8 .

A plurality of guide rail installation parts 9 are fixed on the main body of the building at intervals along the vertical direction. The first rail cover 7 and the second rail cover 8 are supported by rail mounts 9 in one unitary structure. As shown in FIG. 7, each rail mounting member 9 has a thickness wall 9a extending in the thickness direction, width walls 9b, 9c formed by bending both ends of the thickness wall 9a in opposite directions, and two opposite sides of the width wall 9b. Tongue plate 9d extending to the interval. The cables indicated by dashed lines in plan view pass through the space enclosed by the second rail cover 8b and the tongue 9d. The cables can be integrated into a bundle by using a binding strap matched with the tongue plate 9d.

The thickness wall 7 a of the first guide rail cover 7 is fixed on the thickness wall 9 a of the guide rail mounting part 9 , and the width wall 8 b of the second guide rail cover 8 is fixed on the width wall 9 c of the guide rail mounting part 9 . The guide rail mounting part 9 is a short part and a plurality of such guide rail mounting parts are provided at intervals along the vertical direction. In addition, a receiving hole 9e is formed in the thickness wall 9a of the rail mounting member 9. As shown in FIG. The spring assembly 11 is connected with the guide rail fixing member 6 and passes through the receiving hole 9e.

The spring assembly 11 includes a bolt 11a, a head 11b disposed at one end of the bolt 11a, a nut 11c disposed at the other end of the bolt 11a, and a spring 11d coiled on the bolt 11a. The rail mount 9 and the first rail cover 7 have receiving holes 7d, 9e through which the bolts 11a are inserted. The heads 11 b of the bolts 11 a passing through the rail mounting member 9 and the first rail cover 7 are fitted in the receivable portions 6 e of the rail fixing member 6 . The bolt 11a is inserted into the first rail cover 7 while leaving a certain gap between the bolt 11a and the receiving hole 7d.

The diameter of the receiving hole 7d is larger than the outer diameter of the bolt 11a so as to leave a slight gap therebetween, but the diameter of the receiving hole 7d is smaller than the outer diameter of the spring 11d. The diameter of the receiving hole 9e is larger than the outer diameter of the nut 11c. In addition, the spring 11d is tightly pressed on the thickness wall 7a of the first guide rail cover 7, so that the guide rail (the embodiment shown in the figure is the guide rail fixing part 6) is pressed against the guide rail cover (the embodiment shown in the figure is the second guide rail fixing part 6) with a certain pressure. A rail cover 7) contacts. Loosen the screws and remove the first rail cover 7 to remove the spring assembly 11 . In FIG. 4, reference numeral 20 denotes a building body, 21 denotes fastening bolts, and 22 denotes a finished surface. Even if the second rail cover 8 (to be described later) is embedded in the finished surface 22 (indicated by the two-dashed line in FIG. 4), maintenance or other necessary work can be performed.

The sealing member 10 is fixed on the guide rail supporting part composed of the first guide rail cover 7 , the second guide rail cover 8 and the guide rail mounting part 9 , and the section of the guide rail supporting part is roughly C-shaped or groove-shaped. In the illustrated first embodiment, the sealing member 10 is a strip-shaped member extending in the vertical direction, and is held between the first rail cover 7 and the rail fixing member 6 . For a more detailed description, as shown in FIG. 5 , the bushing nut 10 a is assembled on the bolt 11 a between the sealing member 10 and the first rail cover 7 . Specifically, the bushing nut 10a cooperates with a double-sided tape (not shown) so that the sealing member 10 contacts the rear surface of the rail fixing member 6, thereby integrating them. Keeping the left and right ends of the seal 10 in abutting or sliding contact with the inner wall of the first rail cover 7 and the inner wall of the second rail cover 8 or the rail mount 9 . A double-sided tape (not shown in the figure) is placed between the sealing member 10 and the rail fixing member 6 . In the illustrated embodiment, since the lateral edges of the seal 10 are in a position surrounded by the end walls 7c, 8c, a satisfactory closure is obtained.

The upper guide 12 is connected to the upper end of the guide rail 5 . The upper guide 12 is a short part extending in the vertical direction. As shown in Figure 8, the upper guide member 12 has side walls 12a, 12b facing each other, a front wall 12d extending in opposite directions from one end of the side walls 12a, 12b and forming a vertically extending slot 12c therebetween, connecting A rear wall 12e at the other end of the side walls 12a, 12b, and an engageable rib 12f protruding from the rear wall 12e. The upper guide 12 is made of elastic material such as resin. When a force exceeding a predetermined magnitude is applied, the upper guide 12 deforms to such an extent that the width of the slit 12c increases. Therefore, forming the upper guide 12 using resin can have an effect of suppressing noise.

The upper guide 12 has a lower end portion whose cross-sectional shape is substantially the same as that of the guide rail 5 , and the lower end portion extends toward the upper end side and gradually expands. Specifically, the opposite front walls 12d of the left and right upper guides 12 extend from the lower side to the upper side to be inclined toward a direction in which the front walls 12d gradually approach each other (ie, inward along the width direction of the building opening). Thanks to this construction, when the roller blind 4 is lowered from the fully open state, all other guide shoes 13 located above the lowermost guide shoe 13 can be guided in a satisfactory manner into the upper guide. The side walls 12a, 12b extend from the lower side to the upper side so as to gradually expand, and their outer wall surfaces define an inclined surface. The rear wall 12e extends vertically from the lower side to the upper side, and has an upper portion protruding obliquely toward the rear. The upper end of the guide rail 5 is fitted to the lower end of the upper guide 12 . The lower ends of the side walls 12a, 12b of the upper guide 12 are inclined to minimize the step between the lower ends of the side walls 12a, 12b and the upper end wall surfaces of the corresponding guide rails 5 . Since the outer wall surfaces of the side walls 12a, 12b are used as guide surfaces of the guide block 13 detached from the guide rail 5, the side walls 12a, 12b do not have any steps or protrusions at the junction of the outer wall surfaces so that the guide blocks can be smoothly guided. 13.

The upper guide 12 and the guide rail 5 are connected to each other in an elaborately designed manner as described below. First, when the upper end of the guide rail 5 is inserted into the upper guide 12, the inner wall surface of the guide rail 5 and the inner wall surface of the upper guide 12 are kept on the same plane with each other. This structure enables the guide block 13 to move vertically in a desired manner, thereby enabling smooth opening and closing operations. Therefore, the fitting groove 12g is formed at the lower end of the upper guide 12, and the upper end of the front wall 5d of the rail is cut. When the upper end of the guide rail 5 is connected to the upper guide 12, the upper ends of the side walls 5a, 5b of the guide rail 5 fit into the fitting groove 12g. This configuration enables the guide rail 5 to follow the deformation of the upper guide 12 so that the slot 5c also widens like the slot 12c. Furthermore, the engageable rib 12 f of the upper guide 12 is received in the engageable receiving portion 6 d of the rail holder 6 . Therefore, by fitting the lower end of the upper guide 12 to the upper end of the guide rail 5 and slidably engaging the engageable ribs 12f, 5f into the engageable receiving portion 6d, the upper guide 12, the guide rail 5 and the guide rail fixing member 6 combined into an overall structure.

The structure of the roller blind will be described below. The roller blind 4 includes a sheet body 4a and a strip-shaped end piece 4b extending vertically and welded to two opposite edges of the sheet body 4a in the width direction. Both the sheet body 4a and the end sheet 4b are made of vinyl chloride resin as the main material and polyester as the core material. The core material is mixed in the end sheet 4b having a higher density than the sheet body 4a, so the strength of the end sheet 4b is higher than that of the sheet body 4a. In this embodiment, it can be noticed that the end piece 4b is thinner and lower in strength than the piece body 4a, and the folds are concentrated on the end piece 4b, while the piece body 4a is not easy to fold. In addition, the edge 4c of the end piece 4b has a double structure and is easily welded, thereby ensuring a more secure fixation of the guide block 13 (described below).

A plurality of guide blocks 13 are fixed at regular intervals in the vertical direction on opposite end portions in the width direction of the roller shade 4 (ie, the edge 4c having a double structure and being easily welded in this embodiment). Each guide block 13 has opposing side walls 13a, 13b. One end of the guide block 13 is open, and a slot 13c is formed between the opposite side walls 13a, 13b for receiving one end of the roller shade 4 . The opposite side walls 13a, 13b are integrally connected by a rear portion 13d at the other end, and the rear portion 13d has a curved outer peripheral surface. In addition, the rear portion 13d is inclined upward and downward from the middle in the height direction thereof. The end surface at one end of the side walls 13a, 13b is a flat surface 13e extending in the vertical direction. The curved surface 13f extends from the upper and lower ends of the flat surface 13e (corresponding to the joint surface of the present invention) to the upper and lower end surfaces of the side walls 13a, 13b, and the outer corners of the upper and lower end surfaces of the side walls 13a, 13b are inclined surfaces 13g. In addition, the inner corners on the upper and lower end surfaces of the side walls 13a, 13b on the same side as the slot 13c are inclined surfaces 13j. This structure facilitates insertion of the sheet into the slot 13c and prevents damage to the sheet.

A receiving hole 13i for receiving a screw and a receiving hole for receiving a small insert 13h are oppositely formed on the side walls 13a, 13b, respectively. The end of the roller blind 4 (ie, the edge of the end piece 4b) is inserted between the side walls 13a, 13b and fixed by screws. The guide block 13 is generally flat, but its thickness is greater than the width of the slot 5c of the guide rail 5 .

The small insert 13h is embedded slightly inwardly from the outer surface of the side wall 13b. When the end of the small insert 13h is exposed to the outer surface of the side wall 13b, the end of the small insert 13h indicates the degree of wear of the guide pad 13, which can be used to determine when the guide pad 13 should be replaced (for example, based on the exposed small The insert 13h comes into contact with the inner wall of the guide rail 5 and makes an abnormal sound). Similarly, the head of the screw screwed into the small insert 13h is located slightly inside the outer surface of the side wall 13a. When the screw head is exposed on the outer surface of the side wall 13a, the user can know the position of the guide block 13. Degree of wear. In addition, the width of the slot 13c on the inlet side is slightly larger than the width on the innermost side, so that the sheet can be inserted into the slot more easily, and after the sheet is fixed with screws, the inner surfaces of the side walls 13a, 13b are parallel to the sheet. . Therefore, the inner surfaces of the side walls 13a, 13b are evenly brought into pressure contact with the sheet, so that the sheet is not easily damaged.

The guide blocks 13 are fixed at two opposite end portions in the width direction of the roller blind 4 at intervals in the vertical direction. At the lower end of each side of the roller blind 4, two guide blocks 13 are arranged vertically and close to each other. Since the lower end of the roller blind 4 has the longest movement stroke and is the most prone to wear and tear, fixing two adjacent guide blocks 13 on this part can effectively reduce the surface pressure acting on each guide block 13 and reduce the Amount of wear of guide pads.

In the upper part of the roller blind 4, a sealing member 14 is arranged in the width direction, and when the roller blind 4 is completely closed, it is in a position corresponding to the web 19 of the building object. The sealing member 14 is made of the same material as the end piece 4b, and is raised from the surface of the sheet body 4a to such an extent that the sealing member 14 is in contact with the lintel 19, thereby maintaining a closed state. Thus, the seal is arranged on the web side and always remains in contact with the roller blind 4 when the roller blind 4 is opened or closed. In this embodiment, the seal is arranged on the sheet side and only comes into contact with the web 19 when the roller blind 4 is completely closed.

The lowermost edges of the roller blind 4 are folded back and welded together so that a pocket 15 is formed at the lower end of the roller blind 4 . Bottom weights 16 are located at opposite ends of the pocket portion 15 in the width direction. Due to the bottom counterweights 16 arranged at the left and right ends, the roller blind 4 can be rolled up evenly and the sheet is not easily wrinkled. Each bottom counterweight 16 is formed by filling many lead pellets 16b (the diameter of the lead pellets of the smaller pieces is on the order of 2-3mm) in the nylon bag 16a. By using bag 16a filled with lead pellets 16b, a more adaptable counterweight is generally provided and shocks due to impact on an obstacle or the like can be absorbed.

A urethane tube 17 is also arranged in the pocket portion 15, and the tube is located between the left and right bottom counterweights 16. The urethane tube 17 is used to keep the lower end of the roller blind 4 in the form of a sealing plate. In addition, the urethane tube 17 also serves as a spacer to prevent the bottom weight 16 from moving toward the middle in the width direction. The urethane tube 17 may be constructed of a single piece or of a plurality of pieces connected sequentially along the length. Furthermore, the bottom sheet 18 is welded to the lower end of the roller blind 4 so that the pocket 15 is located inside the bottom sheet 18 and surrounded by the sheet.

In the sheet-type roller blind device with the above structure, when the roller blind device is opened or closed, the guide blocks 13 provided at the left and right ends of the roller blind 4 are guided by the grooves of the guide rail 5 as the roller blind 4 moves up and down. If the surface pressure acting on the roller blind 4, such as under the state of fully closing the opening of the building, the flat surface 13e of the guide block 13 arranged at the left and right ends of the roller blind 4 abuts against the front wall 5d of the guide rail 5, thus the flat surface 13e A surface is capable of withstanding surface pressure exerted on it.

The guide rail 5 can not only move along the width direction of the building opening, but also swing back and forth relative to the building opening through the spring assembly 11 . Therefore, when the roller blind 4 is bent by wind or the like, the guide rail 5 can follow the movement of the roller blind 4 . In this way, even when the roller blind 4 is forced to bend, the flat surface 13e of the guide block 13 can abut against the entire front wall 5d of the guide rail 5, thereby preventing the roller blind 4 from falling out of the guide rail 5 under evenly distributed resistance. break away. In addition, since a double-sided tape (not shown in the figure) is provided between the sealing member 10 and the guide rail fixing member 6, even when the guide rail 5 moves with the roller blind 4, it can cooperate with the bushing nut 10a to maintain Closed state.

For example, since the guide rail 5 and the upper guide member 12 are made of elastic resin, if an object hits the roller blind 4, it will force the slot 5c or 12c to widen, thereby making the guide block 13 at the end of the roller blind 4 Get out of the slot. This protects the roller blind 4 or the guide rail 5 from damage. Especially when an object hits the roller blind 4 strongly, the sheet is subjected to a relatively large impact force locally. In this case, the upper and lower inclined surfaces 13g of the guide block 13 come into contact with the inner wall surface of the front wall 5d of the guide rail 5, and thus make it easier for the guide block 13 to come off the guide rail 5. Since the rear surface 13d of the guide block 13 is a curved surface, the guide block 13 detached from the guide rail 5 can be pushed backward into the guide rail 5 by hand. Therefore, as shown in FIG. 4 , a predetermined gap is left between the rear surface 13 d of the guide block 13 and the rear wall 5 d of the guide rail 5 . Due to the predetermined clearance, the guide block 13 is inclined in the groove of the guide rail 5, so that the inclined surface 13g contacts the inner wall surface of the front wall 5d. This makes it easier for the guide block 13 to break away from the guide rail 5 .

Even under the situation that a plurality of guide blocks 13 break away from guide rail 5, guide block 13 also can descend well and get back in guide rail 5 again, and this only needs to push the guide block 13 of the lowest end in guide rail 5, roll up curtain 4, and then make the roller blind 4 descend through the upper guide 12. In this case, the disengaged guide blocks 13 move upward along the outer wall surfaces of the side walls 5a, 5b of the guide rail 5 and the side walls 12a, 12b of the upper guide 12 except for the lowermost guide block 13 . However, since these outer wall surfaces are smooth continuous surfaces, the guide block 13 does not form any steps or protrusions.

The above features will now be described with reference to FIG. 14 . Under the state that roller blind 4 rolls up fully, the guide block 13 that is the bottom is in the upper guide piece 12, and another guide block adjacent to this bottom guide piece 13 is positioned at the top of the guide piece 12 and with The upper guides 12 are vertically spaced. Therefore, the roller blind 4 descends from this state, and all the guide blocks 13 descend under the guidance of the upper guide 12 . In the illustrated embodiment, two guide blocks 13 are arranged adjacently at the lower end of the roller blind 4 . Due to this structure, when the lowermost guide block 13 detached from the guide rail 5 is pushed back into the guide rail 5 by hand, the roller blind 4 is easier to maintain a vertical state, and can be rolled up more smoothly thereafter.

Figure 15 shows another means for smoothly pushing the guide block into the guide rail. The guide block 130 and the guide rail 50 have the same basic structure as the guide block 13 and the guide rail 5, respectively, except that the outer wall surface of the front wall 50d of the guide rail 50 is an inclined surface gradually converging toward the groove of the rail 50. It may be noted that in FIG. 15 the guide block 130 has a flat rear surface, which may be curved like the rear surface of the guide block 13 .

Claims (6)

1. a sheet shutter device is characterized in that, it comprises a sheet roller shutter; A plurality of guide pads, described guide pad are arranged on relative left end and the right-hand member on the described roller shutter width, and have in vertical direction at interval; And guide rail, described guide rail vertically is arranged on the left side and the right side of architectural openings,

It is characterized in that under normal condition, described guide pad can move both vertically in guide rail,

Described guide rail has elasticity, and be the elongate member of extending in vertical direction, in viewgraph of cross-section, has simultaneously the substantial rectangular shape, described guide rail is provided with the line of rabbet joint respectively on its antetheca, be used for receiving roller shutter in this line of rabbet joint, and engage with described guide pad and to make it can not come out from guide rail, described guide rail not only can move at the width of architectural openings, and can with respect to described architectural openings overcome spring assembly fore-and-aft direction swing and

When described roller shutter is subjected to wind etc. and is forced to deflection, described guide rail moves along with the motion of described roller shutter, make described guide pad by docking with described antetheca and can from described guide rail, not coming out, when the load on acting on described roller shutter surpasses predetermined value, described guide rail deforms, the described line of rabbet joint enlarges under the effect of guide pad pressure, thereby makes described guide pad break away from described guide rail.

2. according to the sheet shutter device of claim 1, it is characterized in that described each guide pad all has a composition surface near described guide rail inwall, like this, utilize the joint of described guide rail, can bear the surface pressing that acts on the described roller shutter described composition surface.

3. according to the sheet shutter device of claim 2, it is characterized in that the upper and lower of described each guide pad composition surface has crooked inclined surface, thereby, when the load on acting on described roller shutter surpasses predetermined value, the described guide rail of the easier disengaging of described guide pad.

4. according to claim 1,2 or 3 sheet shutter device, it is characterized in that, described each guide pad form a vertical extent and outstanding rear portion with described composition surface facing surfaces, make that this rear portion is tapered in viewgraph of cross-section to diminish gradually, thereby the described guide pad that has broken away from described guide rail can be back in the described guide rail from its rear portion.

5. according to claim 1,2 or 3 sheet shutter device, it is characterized in that, the guide surface that tilts is formed on the opening part of the gathering sill of described guide rail, thereby when utilizing the guide surface that tilts to be directed, the described guide pad that has broken away from described guide rail can be back in the described guide rail.

6. according to the sheet shutter device of claim 4, it is characterized in that, the guide surface that tilts is formed on the opening part of the gathering sill of described guide rail, thereby when utilizing the guide surface that tilts to be directed, the described guide pad that has broken away from described guide rail can be back in the described guide rail.

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