Summary of the invention
The object of the invention is for all incomplete present situations of existing external sunshade rewindable metal curtain function, design a kind of in realizing external sunshade, also there is the functions such as ventilation, daylighting, the maintenance visual field, and wind loading rating is strong, simple structure, the turnover Building Outside Shading of Window rewindable metal curtain of curtain sheet easy to use, to improving the use function of external sunshade rewindable metal curtain product.
Technical scheme of the present invention is:
The turnover Building Outside Shading of Window rewindable metal curtain of a kind of curtain sheet, is characterized in that it comprises:
One tube shaped electric machine 10, this tube shaped electric machine 10 is installed in transmission tube 22 and by the concaveconvex structure being arranged in tube shaped electric machine and transmission tube and realizes the transmission of tube shaped electric machine power to transmission tube as the power source of whole rewindable metal curtain, and the two ends of transmission tube 22 are bearing on corresponding end seat 3 by spindle nose 23 and bearing;
One front cover shell 2 and rear casing 1, be fixed on aforesaid end seat 3 after front cover shell 2 and rear casing 1 fasten;
One group of elevator belt, it is responsible for the power of transmission tube 22 to be delivered on curtain sheet, it is made up of upper elevator belt 25, middle elevator belt 29 and lower elevator belt 30, the dovetail tooth of upper elevator belt 25 embeds in the dovetail groove of transmission tube 22 external surfaces, and eliminate gap and lock by bayonet lock 28, middle elevator belt 29 with and upper elevator belt 25 be hinged and connected, lower elevator belt 30 is hinged and connected with middle elevator belt 29;
One group is played sunshade effect and the curtain sheet of energy rolling on transmission tube 22, it comprises upper curtain sheet 4, transition curtain sheet 5 and the upset curtain sheet 6 arranged from top to bottom, upper curtain sheet 4 and lower elevator belt 30 chimeric become articulated structure, between all the other each curtain sheets, hinge is connected mutually, thereby making aforesaid each elevator belt, curtain sheet both extensible is a straight line, can curlingly be wrapped in again on transmission tube 22; By adjusting the assembling quantity of lower elevator belt 30, making the lowest elevator belt 30 is certain value apart from transmission tube 22 center of rotation planes, and now roller shutter drops to the end just, and each curtain sheet is mutually chimeric; Each elevator belt and curtain sheet articulated structure center of rotation, in dead point, can not lifted roller shutter with hand, play the effect of security protection;
One is arranged on the identical curtain sheet side cover 19 of symmetrical configuration at curtain sheet 4, transition curtain sheet 5 and upset curtain sheet 6 two ends, this curtain sheet side cover 19 be provided with for install promote carrier bar 8 stretch axle 1901, Gai Shenzhou center is dead slot, and end is to prevent from promoting barb-shaped that carrier bar chain link skids off; Curtain sheet side cover 19 concave sides have lateral trench 1902, and groove both sides have two for the concentric pin-and-hole of upset carrier bar 7 is installed; Promote carrier bar 8 and upset carrier bar 7 by curtain sheet side cover 19 by upper curtain sheet 4, transition curtain sheet 5 and upset curtain sheet 6 connect into one both extensible be a straight line, can curlingly be wrapped in again on transmission tube 22, the curtain sheet 6 that simultaneously makes to overturn is turned into horizontal and forms gap between each curtain sheet, so that light enters the abat vent in stopping up through upset curtain sheet gap;
One turning control mechanism, this turning control mechanism is by latch plate 17, mandrel 13, swing hook 15, torsion spring 16 and hook box 18 form, latch plate 17 structure that is rectangular in shape, its right-angle side is fixed on seat board 14, seat board 14 is plugged in the hole of guide rail 9 upper ends, another right-angle side of latch plate 17 is the S shape structure of sticking up in Wai Qiao upper end, lower end, the bill of the lower end of sticking up outward and swing hook 15 offsets and forms up-small and down-big open wedge, so that the claw 12 on the curtain sheet side cover 19 that install high tumble curtain sheet 6 ends passes through, mandrel 13 is through swing hook 15, torsion spring 16, after latch plate 17, two ends penetrate respectively in the hole of seat board 14 and hook box 18, screw is through hook box 18, after latch plate 17, be fixed on seat board 14, the vertical end of torsion spring 16 is inserted in the flanging of latch plate 17 side top edges, and the crotch end hook of torsion spring 16 is lived swing hook 15 backs, makes the bill of swing hook 15 push against the outer lower end of sticking up of latch plate 17,
One guide rail 9, this guide rail 9 is symmetrical arranged, and makes the lifting carrier bar 8 of curtain sheet side cover 19 and upper installation thereof and upset carrier bar 7 drive upset curtain sheet 6 to move up and down therein.
In the groove 32 of described middle elevator belt 29 by the hook upper elevator belt of 31 insertion 25 bottoms of upper end, realize and being hinged and connected, during lower elevator belt 30 inserts by the hook 31 of upper end, in the groove 32 of elevator belt 29 bottoms, realize and being hinged and connected.
After described upper elevator belt 25, middle elevator belt 29 and lower elevator belt 30 are chimeric by hook 31 and groove 32, bonding one deck felt pan on convex surface, in case each elevator belt, the phase mutual friction in winding process on transmission tube 22 of each curtain sheet damage paint finish.
Described claw 12 is drops structure, and drop-shaped tip is upward so that the resistance that overcomes torsion spring 16 up-small and down-big wedge gap through latch plate 17 and swing hook 15 rises, and in decline process, claw 12 cannot negative line feed.
The control end of described tube shaped electric machine 10 is fixed on a side seat 3 by fixed head 20, the axle of stretching at one side seat 3 centers inserts tube shaped electric machine 10 mesopores through fixed head 20, transmission tube 22 is sleeved on tube shaped electric machine 10 external diameters, tube shaped electric machine 10 outputs are provided with fin, the inwall of transmission tube 22 be provided with described fin match groove, tube shaped electric machine 10 drives transmission tube 22 to rotate by fin, on another side seat 3, bearing 11 is installed, one end of the same spindle nose 23 with fin in surface is inserted in transmission tube 22 and the groove inner with it is meshed, thereby the other end of spindle nose 23 is arranged on and in bearing 11, makes the two ends of transmission tube 22 rotate under the supporting of corresponding end seat 3.
Described end seat 3 is provided with downward square column, and this square column inserts respectively in the square hole on respective side guide rail 9 cross sections, and guide rail 9 adopts screw to be fixed on building wall.
When described upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6 is metal sheet roof covering roll forming, filling-foam polyurethane in its cavity; Packing material not in its cavity when extrusion modling; Upset curtain sheet 6 upper ends, cross section are provided with fin, lower end is provided with groove, and the groove that is positioned at the upset curtain sheet 6 of top can be mutually chimeric with the fin of the upset curtain sheet 6 that is positioned at below; Transition curtain sheet 5 upper ends, cross section are provided with hook 31, lower end is groove 32, and groove 32 is mutually chimeric with the fin outline of upset curtain sheet 6 upper ends, cross section.
The cross section of described upper curtain sheet 4, transition curtain sheet 5 and upset curtain sheet 6 is curved.
The principal plane of described lifting carrier bar 8, upset carrier bar 7 is curved, and one end has circular hole, the other end to have long lumbar hole.
On the upset curtain sheet 6 of described foot, be connected with bottom bar 39, bottom bar 39 is connected with lifting carrier bar 7 by the curtain sheet side cover 19 that inserts its cavity, and the filler rod 41 of wind-lace 40 tops embeds the groove 42 of bottom bar below and fixes.
Default upset curtain sheet program in control circuit, after making roller shutter drop to the end, slightly rise, enter to claw 12 behind the gap of latch plate 17, swing hook 15, not yet lift away from latch plate 17 and decline, realize each upset curtain sheet 6 around the 8 node upsets of upset carrier bar, and by console switch control flip angle.
Beneficial effect of the present invention:
The present invention is mainly used in residential building and the sunshade of public building exterior window.By the innovative design of product structure, the advantage such as retained external sunshade aluminum alloy rolling shaded effects excellence, wind loading rating is strong, defening effect is remarkable, and increase upset curtain sheet function, when making the present invention launch sunshade, can realize the functions such as daylighting, ventilation, the maintenance visual field, therefore improve and the perfect use function of external sunshade aluminum alloy rolling product.
The present invention has kept that external sunshade rewindable metal curtain shaded effects excellence, wind loading rating are strong, the significant advantage of defening effect, and turning curtain sheet in launching sunshade, realizes the functions such as daylighting, ventilation, the maintenance visual field.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Figure 1-10 shows.
The turnover Building Outside Shading of Window rewindable metal curtain of a kind of curtain sheet, it comprises rear casing 1, front cover shell 2, end seat 3, upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6, upset carrier bar 7, promotes the compositions such as carrier bar 8, guide rail 9, tube shaped electric machine 10, bearing 11, claw 12, mandrel 13, swing hook 15, torsion spring 16, latch plate 17, hook box 18, curtain sheet side cover 19, fixed head 20, transmission tube 22, spindle nose 23, upper elevator belt 25, bayonet lock 28, middle elevator belt 29, lower elevator belt 30, tubular rivet 33, guide wheel 34, bottom bar 39, wind-lace 40, control circuit.Fixed head 20 is fixed on tube shaped electric machine 10 control ends on left-hand end seat 3 by screw, the mesopore of stretching axle insertion tube shaped electric machine 10 control ends at left-hand end seat 3 centers.Tube shaped electric machine 10 outputs are through transmission tube 22, the groove of output fin and transmission tube 22 endoporus is chimeric, spindle nose 23 penetrates from transmission tube 22 other ends, the groove of the fin on spindle nose 23 cylindricals and driving tube 22 endoporus is chimeric, bearing 11 external diameters embed spindle nose 23 end centre bores, and bearing 11 internal diameters are bearing in stretching on axle of right-hand end seat 3 centers; Rear casing 1, the chimeric rear employing screw of front cover shell 2 are fixed on symmetrical left side, right-hand end seat 3; Left side, the downward square column of right-hand end seat 3 insert respectively the square hole on symmetrical left side, right rail 9 cross sections of installing, and guide rail 9 adopts screw to be fixed on building wall.Dovetail tooth 26 on upper elevator belt 25 embeds the dovetail groove 27 on transmission tube 22, and locks (as Fig. 3 (c) by bayonet lock 28; Chimeric by hook 31 and groove 32 modes between upper elevator belt 25, middle elevator belt 29, lower elevator belt 30, and by the assembling quantity of lower elevator belt 30, making the lowest elevator belt 30 is certain altitude apart from transmission tube 22 center of rotation planes, bonding one deck felt pan on convex surface; Chimeric by hook 31 and groove 32 modes between upper curtain sheet 4 and lower elevator belt 30, between upper curtain sheet 4 and transition curtain sheet 5.
If upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6 metal sheet roof covering roll formings, filling-foam polyurethane in its cavity, if extrusion modling, packing material not in cavity.Upset curtain sheet 6 upper ends, cross section are that fin 35, lower end are groove 36, and the groove 36 that is positioned at the upset curtain sheet 6 of top can be mutually chimeric with the fin 35 of the upset curtain sheet 6 that is positioned at below; Transition curtain sheet 5 upper ends, cross section are that hook 31, lower end are groove 36, can be mutually chimeric with fin 35 outlines of upset curtain sheet 6 upper ends, cross section; The cross section of upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6 is arc.The described upset curtain sheet 6 two ends profile of pegging graft is respectively the curtain sheet side cover 19 of left and right symmetry, and there is dead slot 1904 at curtain sheet side cover 19Shen Zhou center, and end is barb-shaped; Curtain sheet side cover 19 concave sides have lateral trench 1902, and there are two concentric pin-and-holes both sides, groove lower end.
Described lifting carrier bar 8, the principal plane of upset carrier bar 7 are arc, and one end has circular hole, the other end to have slotted hole.Described tubular rivet 33 successively through n joint left side promote the slotted hole of carrier bar 8, circular hole, guide wheel 34, the n-1 right side that n-1 joint left side promotes carrier bar 8 promotes the circular hole of carrier bar 8, slotted hole the riveted that n joint right side promotes carrier bar 8; Promote on carrier bar 8 nodes at n-1 joint, tubular rivet 33 successively through n-2 joint promote the circular hole of carrier bar 8, slotted hole, guide wheel 34, the n-1 joint that n-1 joint promotes carrier bar 8 promotes the slotted hole of carrier bar 8, circular hole the riveted that n-2 joint promotes carrier bar 8, inside and outside alternately riveted is connected to required joint number according to this; The axle of stretching of each curtain sheet side cover 19 inserts respectively tubular rivet 33 mesopores; Described upset carrier bar 7 inserts the lateral trench on curtain sheet side cover 19 boss, and pass successively the slotted hole of upper joint upset carrier bar 7, the circular hole of lower joint upset carrier bar 7 by bearing pin 37, bearing pin 37 two ends penetrate the concentric pin-and-hole 1903 of curtain sheet side cover 19 lateral trench both sides and fix.
Described latch plate 17 bendings are right angle, and one side is bolted on seat board, and another side sticks up outside lower end, stick up in upper end.
Described seat board is arranged on guide rail 9 with screw, and mandrel 13 passes after swing hook 15, torsion spring 16, latch plate 17, and two ends penetrate respectively in the hole of seat board, hook box 18, and screw is fixed on seat board after passing hook box 18, latch plate 17.The vertical end of torsion spring 16 is inserted in the flanging of latch plate 17 side top edges, and the crotch end hook of torsion spring 16 is lived swing hook 15 backs, makes the bill of swing hook 15 push against latch plate 17.
Described claw 12 embeds the highest curtain sheet side cover 19 boss in injection moulding mode, and claw 12 cross sections are water-drop-shaped, on its wedge angle, refer to.After described upper elevator belt 25, middle elevator belt 29, lower elevator belt 30 is mutual chimeric, felt pan is installed on convex surface.
Described bottom bar 39 is connected with lifting carrier bar 8 by the curtain sheet side cover 19 that inserts its cavity, and wind-lace 40 embeds the groove of bottom bar below and fixes.The circuit controling switch that the present invention matches should be preset with upset curtain sheet program, after making roller shutter drop to the end, slightly rise, enter to claw 12 behind the gap of latch plate 17, swing hook 15, not yet lifting away from latch plate 17 declines, realize each upset curtain sheet 6 around the 8 node upsets of upset carrier bar, and by console switch control flip angle.
Details are as follows:
As shown in Figure 1, rewindable metal curtain of the present invention comprises rear casing 1, front cover shell 2, end seat 3, upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6, upset carrier bar 7, promotes the compositions such as carrier bar 8, guide rail 9, tube shaped electric machine 10, bearing 11, claw 12, mandrel 13, swing hook 15, torsion spring 16, latch plate 17, hook box 18, curtain sheet side cover 19, fixed head 20, transmission tube 22, spindle nose 23, upper elevator belt 25, bayonet lock 28, middle elevator belt 29, lower elevator belt 30, tubular rivet 33, guide wheel 34, bottom bar 39, wind-lace 40, gauge tap.
As shown in Figure 2, fixed head 20 is by tube shaped electric machine 10 control ends are fixed on left-hand end seat 3, the mesopore of stretching axle and insert tube shaped electric machine 10 control ends at left-hand end seat 3 centers.Tube shaped electric machine 10 outputs are through transmission tube 22, the groove of output fin and transmission tube 22 endoporus is chimeric, spindle nose 23 penetrates from transmission tube 22 other ends, the groove of the fin on spindle nose 23 cylindricals and driving tube 22 endoporus is chimeric, bearing 11 external diameters embed spindle nose 23 end centre bores, and bearing 11 internal diameters are bearing in stretching on axle of right-hand end seat 3 centers; Rear casing 1, the chimeric rear employing screw of front cover shell 2 are fixed on symmetrical left side, right-hand end seat 3; Left side, the downward square column of right-hand end seat 3 insert respectively the square hole on symmetrical left side, right rail 9 cross sections of installing, and guide rail 9 adopts screw to be fixed on building wall.
As shown in Figure 3, the dovetail tooth 26 of upper elevator belt 25 tops embeds the dovetail groove 27 on transmission tube 22, inserts bayonet lock 28 and eliminates gap and lock; All chimeric by hook 31 and groove 32 between the upper elevator belt 25 of arrangement, middle elevator belt 29, lower elevator belt 30, upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6 is from top to bottom hinge node, making each elevator belt, curtain sheet both extensible is a straight line, can curlingly be wrapped in again on transmission tube 22.Upper elevator belt 25, middle elevator belt 29, lower elevator belt 30 is chimeric by hook 31 and groove 32, and by the assembling quantity of lower elevator belt 30, making the lowest elevator belt 30 is certain altitude apart from transmission tube 22 center of rotation planes, and now roller shutter drops to the end just, and each curtain sheet is mutually chimeric.When roller shutter product in the past drops to the end, the liftable roller shutter of hand, to certain altitude, is deposited in before transmission tube 22 part curtain sheet, the stuck roller shutter of possibility, and roller shutter can be lifted certain altitude, also forms anti-theft security hidden danger; The special construction that adopts each elevator belt in the present invention, when roller shutter drops to the end, each elevator belt, in dead point, can not lifted roller shutter with hand, reaches the effect of security protection.After upper elevator belt 25, middle elevator belt 29, lower elevator belt 30 is chimeric by hook 31 and groove 32, bonding one deck felt pan on convex surface, in case each elevator belt, the phase mutual friction in winding process on transmission tube 22 of each curtain sheet damage paint finish.If upper curtain sheet 4, transition curtain sheet 5, upset curtain sheet 6 metal sheet roof covering roll formings, filling-foam polyurethane in its cavity, both can increase the flexural strength in curtain sheet cross section, has again good sound insulation, effect of heat insulation; If extrusion modling, cavity wall thickness is bigger, and cavity cross section modulus is larger, and bending resistance is strong, therefore packing material in cavity not.Upset curtain sheet 6 upper ends, cross section are that fin 35, lower end are groove 36, both profile geometries are substantially identical, make the fin 35 of each upset curtain sheet 6 can be mutually chimeric with groove 36 of another upset curtain sheet 6, the fin 35 with upset curtain sheet 6 upper ends, cross section of transition curtain sheet 5 lower end, cross section grooves 36 also can be mutually chimeric.In the time that roller shutter vertically declines, each upset curtain sheet 6 all in vertical state, while dropping to the end, the groove 36 of each adjacent upper upset curtain sheet 6 is mutually chimeric until view picture roller shutter forms a slice rigid body piecewise from bottom to top with the fin 35 of next upset curtain sheet 6, not only sunshade, sound insulation, effect of heat insulation are good, also have certain rated wind velocity and anti-theft feature.In the time that roller shutter rises, the curtain sheet 6 that respectively overturns separates and forms gap from top to bottom piecewise, non-interference while making each curtain sheet upset; In the time that roller shutter rises, curtain sheet is wound on transmission tube piecewise, and because each curtain sheet cross section is arc, while making roller shutter rising, curtain sheet be curled into cylinder, crimp diameter is less, and required case appearance and size is less.
As shown in Figure 4, the reserved cavity in the upset curtain sheet 6 two ends a slice of pegging graft respectively becomes the curtain sheet side cover 19 of left and right symmetry, curtain sheet side cover 19 one end are stretched axle 1901 centers and are dead slot shape, mounting end is barb-shaped, while passing through elevator chain node hole, can dwindle, through rear reinstatement, barb can stop that elevator chain node comes off; On curtain sheet side cover 19 concave sides, have lateral trench, two axis in groove are perpendicular to the concentric pin-and-hole in upset curtain sheet 6 cross sections, for upset carrier bar 8 is installed.In the time that roller shutter rises, each curtain sheet is crimped onto on transmission tube 22 successively, and upset carrier bar 8 can embed in the lateral trench 1902 of curtain sheet side cover 19 concave sides, can reduce the curling volume of roller shutter.
As shown in Figure 5, Figure 6, the profile that promotes carrier bar 8, upset carrier bar 7 is curved surface, and while making it to be wound around on transmission tube 22 with each curtain sheet, the cylinder radius curling into is less, takes up room less.As Fig. 5, each promote carrier bar 8 circular hole ends upwards, waist nose end is downward, concave surface is towards outside window, and tubular rivet 33 promotes carrier bar 8 slotted holes, n-1 joint left side and promote carrier bar 8 circular holes, guide wheel 34, n-1 right side and promote carrier bar 8 circular holes, n joint right side and promote slotted hole the riveted of carrier bar 8 successively through n joint left side; Promote on carrier bar 8 nodes at n-1 joint, tubular rivet 33 promotes carrier bar 8 circular holes, n-1 joint through n-2 joint successively and promotes that carrier bar 8 slotted holes, guide wheel 34, n-1 joint promote carrier bar 8 slotted holes, n-2 joint promotes carrier bar 8 circular holes riveted, and inside and outside alternately riveted is connected to required joint number according to this; Upset curtain sheet 6 two ends curtain sheet side covers 19 are stretched axle through promoting carrier bar 8 node tubular rivet 33 endoporus; As shown in Figure 6, respectively overturn carrier bar 7 circular hole ends upwards, oval nose end is downward, adopts bearing pin 37 to be arranged in the hole of curtain sheet side cover 19.Therefore when transmission tube 22 rotates, can drive each elevator belt, each curtain sheet rise in vertical state or decline, each curtain sheet separated state in ascending, descending.Each curtain sheet rises to curling being wrapped on transmission tube 22 of when top, and in the time that roller shutter drops to the end, flange, groove are chimeric between two piecewise from bottom to top for each adjacent upset curtain sheet 6, until form entirety.
As shown in Figure 7, latch plate 17 bendings are structure of right angle tyoe, and its side rivet clasp, on seat board, sticks up outside positive lower end, sticks up in upper end.As shown in Figure 8, seat board is arranged on guide rail 9 with screw, and mandrel 13 passes after swing hook 15, torsion spring 16, latch plate 17, and two ends penetrate respectively in the hole of seat board (not shown), hook box 18, and screw is fixed on seat board after passing hook box 18, latch plate 17.The vertical end of torsion spring 16 is inserted in the flanging of latch plate 17 side top edges, and the crotch end hook of torsion spring 16 is lived swing hook 15 backs, makes the bill of swing hook 15 push against latch plate 17.Above-mentioned torsion spring-swing hook mechanism is in the each pair that distributes of the upset curtain sheet 6 left and right symmetries in two ends.
As shown in Figure 9, for the ease of upset, on the curtain sheet side cover 19 of installing, a claw 12 is set in the end of upset curtain sheet topmost, claw 12 embeds on the highest curtain sheet side cover 19 boss in injection moulding mode, and claw 12 cross sections are water-drop-shaped, after installation, on its wedge angle, refer to.Curtain sheet end cap and the each lifting carrier bar 7 being attached thereto, upset carrier bar 8 embed the dead slot of guide rail 9 in the lump.
As shown in figure 10, bottom bar 39 is connected with lifting carrier bar 7 by the curtain sheet side cover 19 that inserts its cavity, bottom bar 39 can be with roller shutter lifting, the roller shutter that its weight can make each lifting carrier bar 7, upset curtain sheet 6 form keeps plumbness in lifting, wind-lace 40 embeds in the groove of bottom bar 39 belows, when roller shutter drops to the end, can play cushioning effect, and increase the seal of roller shutter.
Default upset curtain sheet program in control circuit, after making roller shutter drop to the end, slightly rise, enter to claw 12 behind the gap of latch plate 17, swing hook 15, not yet lift away from latch plate 17 and decline, realize each upset curtain sheet 6 around the 8 node upsets of upset carrier bar, and by control circuit control flip angle.
Operating principle of the present invention is:
As shown in Figure 8, in the time that roller shutter rises, lifting carrier bar 7 promotes each curtain sheet and slides along guide rail 9, contacts and control interior external series gap by the guide wheel 34 promoting on carrier bar 7 nodes with guide rail 9.When claw 12 rises to the outer horn mouth that sticks up lower end formation of swing hook 15 extrados and latch plate 17, the drift angle referring on claw 12 can be cut smoothly and touch between swing hook 15 and latch plate 17, because the thrust of latch plate 17 is greater than the thrust of swing hook 15, claw 12 promotes swing hook 15 and overcomes the moment of torsion of torsion spring 16, rotate and continue to hook box 18 directions around mandrel 13 and upwards slide, claw 12 is after swing hook 15, and torsion spring 16 promotes swing hook 15 resiliences, and the bill of swing hook 15 pushes against latch plate 17; Claw 12 between swing hook 15 and latch plate 17, in gap, continue up until skid off latch plate 17 in stick up upper end.If claw 12 positions are higher than latch plate 17 upper ends, when decline roller shutter, each curtain sheet slides along guide rail 9, claw 12 declines and touches while sticking up upper end in latch plate 17, the circular-arc bottom face in claw 12 water droplet cross sections can not be cut gap between latch plate 17 and hook box 18, can only prop up latch plate 17 outsides and slide, until claw 12 departs from latch plate 17.In the time that needs overturn curtain sheet, first roller shutter is dropped to the end of to, operation-control switch upset curtain sheet button, presetting programme-control roller shutter first rises, claw 12 enters the horn mouth of swing hook 15 and latch plate 17 extrados formations and rises to and departs from swing hook 15, swing hook 15 resiliences, bill props up latch plate 17 again, the now pre-set programs start-up circuit decline roller shutter in switch, because of the circular-arc bottom face in claw 12 water-drop-shaped cross sections down, when decline, can not cut the gap between latch plate 17 and swing hook 15, can only slide along swing hook 15 intrados, rotate around mandrel 13 with swing hook 15 simultaneously, until claw 12 touches hook box 18 skewed slot bottom lands, make claw 12, the lower end of upset carrier bar 8 and upset curtain sheet 6 all stops declining, drive the upper end of upset curtain sheet 6 to continue to decline and now promote carrier bar 7, realize each upset curtain sheet 6 around the 8 node upsets of upset carrier bar, and between each curtain sheet, separated in lifting, can not hinder each curtain sheet upset.Curtain sheet upset scope is general≤and 90 °, operable switch control corner.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.