Lifting type anti-theft louver
Technical field
The present invention relates to a kind of lifting type anti-theft louver, belong to the building doors and windows field.
Background technology
The window of Urban House mainly is a sliding sash at present, sliding sash does not take up space when opening and can control intake, yet, the defective of sliding sash is that door is opened greatly when pushing open, be difficult to prevent that the stranger from invading the room, in order to guarantee personal safety, the measure that present people take is at window exterior wall or interior wall anti-theft fence to be installed, safety grid and alarm, the various informative fixedly anti-theft fence and the defective of safety grid are, blocked the sight line that people look into the distance, when breaking out of fire, more make people's escape of can't opeing the window, the fence of cage formula has greatly influenced city image in addition; In order to overcome the fixedly defective of anti-theft fence, people have designed different movable anti-theft fence and the safety grid of form, but these all do not play much effects to the change of city image; As if alarm also solved fixedly these defectives of anti-theft fence and safety grid, but, facts have proved, its rate of false alarm is higher, usually allow people's false alarm, also can't satisfy the sort of psychological security that people are at physical existence simultaneously, and its degree of aging is also than higher, people need just once be updated every several years, and cost is too big.
Chinese patent ZL200620170171.X discloses a kind of " multi-functional Liftable type safe antitheft shutter ", it is made of window frame with cavity and louvered window leaf, the lifting gear and the turning device that are connected with the louvered window leaf are housed in the cavity of window frame, window leaf two ends are contained in by the end connector in the chute of window frame both sides, connect by the folding pawl between the window leaf; This lifting gear is made of the pulley, wire rope, chain, tooth sector, elevating lever and the junction button that are contained in four jiaos of the window frames, wire rope is contained on four pulleys, one end of wire rope is connected with an end of chain by junction button, the other end of wire rope is connected with the other end of chain, chain is contained on the gear on the pulley, and by tooth sector change direction, the two ends of elevating lever are fixed on the wire rope of both sides, and are connected with a nethermost gate leaf; Switching mechanism is made of rotating shaft, runner, supporting, stay cord and blade turner, rotating shaft is fixed in the upside of window frame by supporting, runner is housed in the rotating shaft, stay cord on two runners is connected with two end connectors of every gate leaf, and the stay cord on another runner is connected with snap close with the blade turner that is contained in shutter one side; The sash lock that is used with the window frame downside is housed on the elevating lever; The deficiency that this patent of invention technology exists is, passes steel pipe in the middle of the blade except that two ends are fixing, do not have other girth member each other, very easily destroyed when big across degree; Steel pipe passes in the middle of the blade, and vane thickness is increased, and causes the daylighting deficiency; The steel pipe two ends can be rotated, and it is bigger to occupy the window upper space after causing blade rise to draw in, influences lighting quantity and image appearance.
Summary of the invention
The purpose of this invention is to provide a kind of lifting type anti-theft louver, overcome the deficiency of existing anti-theft louver, make lifting type anti-theft louver when keeping ventilation and lighting, lifting superperformance freely, have firmer anti-theft feature and better image appearance.
To achieve these goals, lifting type anti-theft louver of the present invention is by the window frame with cavity, portable fence, blade of louver window is formed, the lifting gear that is connected with the portable fence bar is housed in the cavity of window frame, blade rotating device and spacing positioner, the portable fence bar by the two ends fitting sleeve or be spun on the elevating screws bar, connect by hinge-rod between the portable fence bar, blade pass is crossed pin and grasswort sleeve on the edge is connected with ear muff tube on the grate bar and is overturn by blade rotating device, the spacing positioner is installed in and is positioned at elevating screws bar upper end axle journal and screw thread intersection in the window frame both sides, keeps specified spacing when the control gate railing is descending each other.
Lifting gear by be contained in elevating screws bar in the window frame, bearing supporting, sprocket wheel, chain and manually and the electric up-down drive unit form, the two ends up and down of elevating screws bar are installed in the bearing supporting and upward and by keyway cooperate sprocket wheel two ends down fixed thereon, by with the chain of sprocket engagement passive elevating screws bar being connected and keeping rotating synchronously with active elevating screws bar; Initiatively the upper and lower side of elevating screws bar is equipped with manually and the electric up-down drive unit, can drive the rotation of elevating screws bar by manual and electric up-down drive unit.
Blade rotating device is by the top grate bar that is installed in the window frame top, rolling wheel, gear, fixed bearing, be contained in the rolling wheel on the securing rod, serving, be inserted in torque spring and manual and electric turnover drive unit composition between blade and the grate bar, the grate bar bearing that is fixed in the top is fixed in the window frame top, its two ends fitting sleeve is on the elevating screws bar, rolling wheel and gear are connected as a single entity, be installed on the grate bar of the top by needle bearing, serving one end as initiating terminal clockwise at the rolling wheel pitch of the laps on the grate bar of the top and be fixed on the rolling wheel surface, its other end as terminal be passed down through on each blade edge the rope hole and by knot with the fixed distance between each blade, arrive the counterclockwise pitch of the laps in rolling wheel place on the securing rod, the earhole that passes again on each grate bar arrives the rolling wheel place another mistake hour hands pitch of the laps that is installed on the grate bar of the top, also be fixed on the rolling wheel surface, form the serving loop, serving allows blade to spin upside down until pressing close to the extreme position of grate bar up and down around the number of turns of the rolling wheel total length after expansion respectively, before grate bar rises gathering, by manual and electric turnover drive unit blade is returned to horizontal level, in grate bar rising gathering process, serving is lax, torque spring remains on blade on the horizontal level, when blade need up overturn, manually and electric turnover drive unit driven gear and on rolling wheel and rolling wheel clockwise rotate, the serving initiating terminal is rolled by rolling wheel and the terminal of serving is released, by pass blade rope hole this section serving will drive rolling wheel do with rolling wheel rotatablely move in the same way pass this section of grate bar earhole serving the lower end by the rolling wheel rolling-in; When blade need down overturn, situation was just in time opposite, and the length of optic lobe sheet is settled more than one rolling wheel and serving.
Portable fence is by grate bar, grate bar two end joints, fence hinge-rod and pin are formed, grate bar and two end joints are for fixedlying connected, two end joints of grate bar are a plane tooth bar for nut block and the side with the engagement of elevating screws bar, one end of hinge-rod is enclosed within on the grate bar, the other end connects by pin, grate bar connected make it to be parallel to ground and its two end joint and be spun on the elevating screws bar in the window frame both sides by nominal space, all grate bars rotate with the elevating screws bar and rise synchronously or descend synchronously, the axle journal of one section diameter less than its major diameter of thread reserved on elevating screws bar top, all deviate from grate bar two end joints that screw arrives the top axle journal except that securing rod two end joints so that hold, the grate bar of the top is supported and is fixed on window frame top, its two ends fitting sleeve is on the elevating screws bar and rest on its axle journal annular steps, the grate bar of below is as securing rod, when securing rod drops to lower frame of window, by the movable plug of locking in the pivoted window lower frame, insert with the affixed bolt piece hole of securing rod in, securing rod is locked in the window frame bottom.
One side of blade of louver window is provided with the grasswort sleeve, be connected with corresponding ear muff tube on the grate bar by pin, the rope hole is set on the another side of blade, serving passes the rope hole of blade and by knot it is fixed equidistantly, thereby blade is connected in series, and optic lobe sheet length is provided with more than one rope hole and grasswort sleeve.
Manual and electric up-down driving mchanism is by motor; Sprocket wheel; Chain; Sprocket wheel with clutch components; Worm gear with clutch components; Worm screw; The bearing supporting; Rocking handle and connecting rod clutch form; The upper and lower side clutch components of connecting rod clutch cooperates by keyway and is installed on the elevating screws bar upper and lower side axle journal and can be along the up and down slippage of elevating screws rod axis; Compress Spring is enclosed within on the connecting rod of connecting rod clutch and is clipped in the annular steps on the connecting rod and is fixed between the annulus cover on window frame one side; With the clutch components engagement on lower end clutch components and the turbine under the maintenance manual state; Clutch components on upper end clutch components and the sprocket wheel breaks away from simultaneously; Cover For A Turbine is on the lower end-journal of elevating screws bar; Worm screw is fixed in the window frame bottom by the bearing supporting; Drive again turbine by the rocking handle rotary worm; Because the clutch components on the turbine and the engagement of connecting rod clutch lower end clutch components; Thereby driving the elevating screws bar rotates; Sprocket wheel is housed on the motor reel; Sprocket wheel with clutch components is enclosed within on the upper end axle journal of elevating screws bar; Motor is fixed on window frame top; When electronic; Magnetic valve up pushes up the annular steps on the connecting rod; Clutch components on upper end clutch components and the sprocket wheel meshes so that connecting rod clutch lower end clutch components breaks away from the clutch components on the turbine; Motor drives the rotation of elevating screws bar by the engagement of chain and sprocket wheel; When motor shut down, the connecting rod clutch returned to normal.
Pitch control unit is by gear, the tuning gear, back-moving spring, the sour jujube bar, poke rod, ratchet, form with gear and bearing spider that ratchet is affixed, the center to center distance of gear and gear equals the distance between two grate bars, when securing rod two end joints and all the other grate bars two end joints are all the nut that meshes with the elevating screws bar, there is not installing space control device on the window frame both sides inwall of thread spindle cervical part of esophagus and thread segment intersection on elevating screws bar top, the axle center of its gear and elevating screws bar top does not have the thread spindle cervical part of esophagus and the thread segment intersection is in same horizontal level, when previous grate bar drops to specified spacing, joint side plane, the two ends tooth bar of this grate bar touches the poke rod in this pitch control unit, make sour jujube bar disengaging ratchet and allow gear rotate, thereby rotate by tuning gear driven gear, and joint side plane, the two ends tooth bar engagement of a gear and a back grate bar, cause itself and previous grate bar to descend synchronously by specified spacing, when previous grate bar moves down the disengaging poke rod, the sour jujube bar blocks ratchet again under the effect of back-moving spring, to avoid sliding under other grate bar on the thread segment on the elevating screws bar.
Be by the shaft bearing supporting that is contained in the window frame top manually with electronic blade overturning drive device, rotating shaft, gear, the compression spring, clutch, turbine, worm screw, Hooks coupling universal coupling, the worm bearing supporting, hand curved bar, folding handle and reversible electric machine are formed, the rotating shaft two ends are installed in the shaft bearing supporting, gear be mounted in the rotating shaft by keyway and respectively with axle on gears engaged, one end of rotating shaft is connected with reversible electric machine by shaft coupling, clutch cooperates on the other end that is installed in rotating shaft and slippage vertically by keyway, turbine also is enclosed within on this end, the compression spring housing is in the rotating shaft and between clutch and bearing supporting, to keep clutch and turbine engagement under the manual state, worm screw is meshed with turbine, one end of Hooks coupling universal coupling is connected with worm screw, the other end is connected with hand curved bar, the lower end of hand curved bar is connected with the folding handle, when Motor Drive, electromagnetic valve is passed clutch to the right, make it with turbine on clutch components break away from, when motor shut down, clutch returned to normal.
Portable fence is that grate bar, hinge-rod and the pin of garden shape formed by the cross section, the hinge-rod that connects grate bar is a straight-bar, the one end is a sleeve, be enclosed within on the grate bar and can rotate around it, the other end is drilled with the circular hole of band counterbore, by the countersunk head pin it is connected with another hinge-rod, grid railing length can the more than one hinge-rod of socket.
Portable fence is the square special-shaped bar of prolate by the cross section, hinge leaf and pin are formed, the profile part that this abnormity grate bar is presented when closing up with hinge leaf curves identical shape, the shaft centerline of hinge that connects special-shaped grate bar is vertical with special-shaped grate bar length direction, each oppositely is rolled into the ear muff tube and the both sides counter flange becomes reinforcing rib its hinge two ends, on reinforcing rib, be drilled with simultaneously the hole onesize with the ear muff tube, connect by pin, same other two ends are connected on the special-shaped grate bar with pin, looking special-shaped grate bar length can the more than one hinge leaf of socket, and special-shaped grate bar can guarantee to reach the space of reducing its occupied window top to greatest extent after shutter abnormity grate bar draws in corresponding hinge.
Securing rod two end joints are the nut that meshes with the elevating screws bar, rise or descend with the rotation of elevating screws bar, and all the other are enclosed within two end joint diameter of bores of the grate bar on the elevating screws bar greater than elevating screws bar external diameter, move upward its picking-up or move downward by gravity and hinge by securing rod it is left behind.
The invention has the beneficial effects as follows: this lifting type anti-theft louver separates fence with blade, respectively the fence lifting gear that design can self-locking, can self-locking manually with electronic blade rotating device, firm fence hinge and locking device attractive in appearance; Antitheft, rainproof, ventilation, privacy are covered, are reduced noise, sun shading and energy-saving, adjusting indoor light, the multiple function collection of fire disaster escaping and give all over the body, and it is few to occupy the window upper space after the gathering of fence blade, makes anti-theft louver become the indispensable building unit of huge numbers of families.
Description of drawings
Front 3 dimensional drawing when Fig. 1 is round bar for lifting type anti-theft louver grate bar of the present invention.
Back side 3 dimensional drawing when Fig. 2 lays down window frame and grate bar and is round bar for lifting type anti-theft louver of the present invention.
Fig. 3 is lifting type anti-theft louver fence round bar of the present invention and hinge engaging structure explosive view.
Fig. 4 is lifting type anti-theft louver blade of the present invention and fence round bar articulated structure and torque spring layout partial schematic diagram.
Fig. 5 is the connecting rod clutch configuration figure of lifting type anti-theft louver lifting gear of the present invention.
Fig. 6 is the clutch configuration figure of lifting type anti-theft louver blade turning device of the present invention.
Fig. 7 is lifting type anti-theft louver pitch control unit of the present invention and grate bar and elevating screws bar engagement partial structurtes schematic diagram.
Back side 3 dimensional drawing when Fig. 8 lays down window frame and grate bar and is special-shaped bar for lifting type anti-theft louver of the present invention.
Fig. 9 closes up structure chart for lifting type anti-theft louver fence abnormity bar of the present invention is connected with hinge.
Figure 10 is lifting type anti-theft louver fence abnormity bar of the present invention and hinge engaging structure explosive view.
Figure 11 is connected the partial structurtes schematic diagram for lifting type anti-theft louver serving of the present invention with rolling wheel.
Specific embodiments
Embodiment 1: a kind of lifting type anti-theft louver, it is by the window frame with cavity, portable fence, blade of louver window (77) is formed, the lifting gear that is connected with portable fence bar (76) is housed in the cavity of window frame, blade rotating device and spacing positioner, portable fence bar (76) is enclosed within or is spun on the interior elevating screws bar (21) (25) in window frame both sides (12) (14) by two end joints (75), connect by hinge-rod (78) (710) between the portable fence bar (76), blade (77) is connected grasswort sleeve (71) on the edge by pin (74) and overturns by blade rotating device with ear muff tube (72) on the grate bar, the spacing positioner is installed in and is positioned at elevating screws bar (21) (25) upper end axle journal and screw thread intersection (714) in the window frame both sides (12) (14), and control gate railing (76) keeps specified spacing each other when descending.
Lifting gear is by the elevating screws bar (21) (25) that is contained in the window frame, bearing supporting (23), sprocket wheel (24), chain (22) and manual and electric up-down drive unit composition, the two ends up and down of elevating screws bar (21) (25) are installed in bearing supporting (23) and upward and by keyway cooperate sprocket wheel (24) two ends down fixed thereon, by passive elevating screws bar (21) being connected and keeping rotation synchronously with active elevating screws bar (25) with the chain (22) of sprocket wheel (24) engagement, initiatively the upper and lower side of elevating screws bar (25) is equipped with manually and the electric up-down drive unit, can drive elevating screws bar (21) (25) rotation by manual and electric up-down drive unit.
Blade rotating device is by the top grate bar (31) that is installed in the window frame top (11), rolling wheel (32), gear (33), fixed bearing (34), be contained in the rolling wheel (35) on the securing rod (81), serving (36), be inserted in torque spring (73) and manual and electric turnover drive unit composition between blade (77) and the grate bar (76), the bearing that is fixed (34) of the top grate bar (31) is fixed in the window frame top (11), its two end joint (75) is enclosed within on the elevating screws bar (21) (25), rolling wheel (32) is connected as a single entity with gear (33), be installed on the top grate bar (31) by needle bearing, serving (36) one ends as initiating terminal clockwise around the some circles of the rolling wheel on the grate bar of the top (32) and be fixed on rolling wheel (32) surface, its other end is passed down through the rope hole (37) on each blade (77) one side and passes through knot (38) with the fixed distance between each blade (77) as terminal, the rolling wheel (35) that arrives on the securing rod (81) is located counterclockwise pitch of the laps, passing earhole (711) on each grate bar (76) again arrives the rolling wheel (32) be installed on the top grate bar (31) and locates another mistake hour hands pitch of the laps, also be fixed on rolling wheel (32) surface, form the serving loop, serving (36) allows blade (77) to spin upside down until pressing close to the extreme position of grate bar (76) up and down around the number of turns of rolling wheel (32) and (35) total length after expansion respectively, before grate bar (76) rises receipts, by manual and electric turnover drive unit blade (77) is returned to horizontal level, rise in the receipts process at grate bar (76), serving (36) is lax, torque spring (73) remains on blade (77) on the horizontal level, when blade (77) need up overturn, manually and electric turnover drive unit driven gear (33) and on rolling wheel (32) and rolling wheel (35) clockwise rotate, serving (36) initiating terminal is rolled by rolling wheel (32) and the terminal of serving (36) is released, will drive rolling wheel (35) by rope hole (37) this section serving that passes blade (77) and do to rotatablely move the lower end of earhole (711) this section serving of passing grate bar (76) in the same way by rolling wheel (35) rolling-in with rolling wheel (32); When blade (77) need down overturn, situation was just in time opposite, and the length of optic lobe sheet (77) is settled an above rolling wheel (32) (35) and serving (36).
Portable fence is by grate bar (76), grate bar two end joints (75), fence hinge-rod (78) (710) and pin (79) are formed, grate bar (76) and two end joints (75) are for fixedlying connected, two end joints (75) of grate bar (76) are a plane tooth bar (713) for nut block and the side with elevating screws bar (21) (25) engagement, one end of hinge-rod (78) (710) is enclosed within on the grate bar (76), the other end connects by pin (79), all grate bars (76) rotate with elevating screws bar (21) (25) and rise synchronously or descend synchronously, the axle journal of one section diameter less than its major diameter of thread reserved on elevating screws bar (21) (25) top, all deviate from grate bar (76) two end joints (75) that screw arrives the top axle journal except that securing rod two end joints (712) so that hold, the grate bar of the top (31) is supported (34) and is fixed on window frame top (11), its two ends fitting sleeve is gone up and is rested on its axle journal annular steps at elevating screws bar (21) (25), the grate bar of below is as securing rod (81), when securing rod (81) drops to window frame bottom (13), by the movable plug (84) on the lock (83) in the rotation window frame bottom (13), insert with affixed bolt piece (82) hole of securing rod (81) in, securing rod (81) is locked in window frame bottom (13).
One side of blade of louver window (77) is provided with grasswort sleeve (71), be connected with corresponding ear muff tube (72) on the grate bar by pin (74), rope hole (37) is set on the another side of blade (77), serving (36) passes the rope hole (37) of blade (77) and by knot (38) it is fixed equidistantly, thereby blade (77) is connected in series, and optic lobe sheet (77) length is provided with more than one rope hole (37) and grasswort sleeve (71).
Manual and electric up-down driving mchanism is by motor (41); Sprocket wheel (42); Chain (43); Sprocket wheel (44) with clutch components; Worm gear (45) with clutch components; Worm screw (46); Rocking handle (47); Bearing supporting (48) and connecting rod clutch form; The upper and lower side clutch components (51) (56) of connecting rod clutch cooperates by keyway and is installed on elevating screws bar (25) the upper and lower side axle journal and can be along the up and down slippage of elevating screws bar (25) axis; It is upper and be clipped in the annular steps (55) on the connecting rod (52) and be fixed between the annulus cover (53) on window frame one side (14) that Compress Spring (54) is enclosed within the connecting rod (52) of connecting rod clutch; With the clutch components engagement on lower end clutch components (56) and the turbine (45) under the maintenance manual state; Clutch components on upper end clutch components (51) and the sprocket wheel (44) breaks away from simultaneously; Turbine (45) is enclosed within on the lower end-journal of elevating screws bar (25); Worm screw (46) is fixed in the window frame bottom (13) by bearing supporting (48); Drive again turbine (45) by rocking handle (47) rotary worm (46); Because the clutch components on the turbine (45) and the engagement of connecting rod clutch lower end clutch components (56); Thereby driving elevating screws bar (25) rotates; Sprocket wheel (42) is housed on the motor reel; Sprocket wheel (44) with clutch components is enclosed within on the upper end axle journal of elevating screws bar (25); Motor (41) is fixed on window frame top (11); When electronic; Magnetic valve up pushes up the annular steps (55) on the connecting rod (52); Clutch components engagement so that connecting rod clutch lower end clutch components (56) breaks away from clutch components on the turbine (45) on upper end clutch components (44) and the sprocket wheel (44); Motor rotates by the engagement drive elevating screws bar (25) of chain (43) with sprocket wheel (44); Motor (41) is when shutting down, and the connecting rod clutch returns to normal.
Pitch control unit is by gear (61), tuning gear (62), back-moving spring (63), sour jujube bar (64), poke rod (65), ratchet (66), form with gear (67) and bearing spider (68) that ratchet (66) is affixed, the center to center distance of gear (61) and gear (67) equals the distance between two grate bars (76), when securing rod (81) two end joints (712) are all the nut that meshes with elevating screws bar (21) (25) with all the other grate bar (76) two end joints (75), there is not installing space control device on window frame both sides (12) (14) inwall of thread spindle cervical part of esophagus and thread segment intersection (714) on elevating screws bar (21) (25) top, the axle center of its gear (61) and elevating screws bar (21) (25) top does not have the thread spindle cervical part of esophagus and thread segment intersection (714) is in same horizontal level, at previous grate bar (76) when dropping to specified spacing, two end joints (75) the side plane tooth bars (713) of this grate bar (76) touch the poke rod (65) in the pitch control unit, make sour jujube bar (64) disengaging ratchet (66) and allow gear (67) rotate, thereby rotate by tuning gear (62) driven gear (61), and the engagement of two end joints (75) the side plane tooth bars (713) of a gear (61) and a back grate bar (76), cause itself and previous grate bar (76) to descend synchronously by specified spacing, when previous grate bar (76) moves down disengaging poke rod (65), sour jujube bar (64) blocks ratchet (66) again under the effect of back-moving spring (63), to avoid sliding under other grate bar (76) on the thread segment on the elevating screws bar (21) (25).
Be by the shaft bearing supporting (911), the rotating shaft that are contained in the window frame top (11) manually with electronic blade overturning drive device
(93), gear (94), compression spring (95), clutch (96), turbine (97), worm screw (98), Hooks coupling universal coupling (99), worm bearing supporting (910), hand curved bar (92), folding handle (91) and reversible electric machine (912) are formed, rotating shaft (93) two ends are installed in the shaft bearing supporting (911), gear (94) by keyway cooperate be installed in that rotating shaft (93) is gone up and respectively with axle (31) on gear (33) engagement, one end of rotating shaft (93) is connected with reversible electric machine (912) by shaft coupling, clutch (96) cooperates on the other end that is installed in rotating shaft (93) and slippage vertically by keyway, turbine (97) also is enclosed within on this axle head, compression spring (95) is enclosed within rotating shaft (93) and goes up and be positioned at clutch (96) and bearing supports between (911), to keep clutch (96) and turbine (97) engagement under the manual state, worm screw (98) is meshed with turbine (97), one end of Hooks coupling universal coupling (99) is connected with worm screw (98), the other end is connected with hand curved bar (92), the lower end of hand curved bar (92) is connected with folding handle (91), when Motor Drive, electromagnetic valve is passed clutch (96) to the right, make it with turbine (97) on clutch components break away from, when motor shut down, clutch (96) returned to normal.
Embodiment 2: portable fence is that grate bar (76), hinge-rod (78) (710) and the pin (79) of garden shape formed by the cross section, the hinge-rod (78) that connects grate bar (76) is a straight-bar, the one end is a sleeve, being enclosed within grate bar (76) goes up and can rotate around it, the other end is drilled with the circular hole of band counterbore, by countersunk head pin (79) it is connected with another hinge-rod (710), grid railing (76) length can the more than one hinge-rod of socket (78) (710).
Embodiment 3: portable fence is the square special-shaped grate bar (76) of prolate by the cross section, hinge leaf (78) (710) and pin (79) are formed, this abnormity grate bar (76) curves identical shape in the profile part that is presented when closing up with hinge leaf (78) (710), the shaft centerline of hinge (78) (710) that connects special-shaped grate bar (76) is vertical with special-shaped grate bar (76) length direction, each oppositely is rolled into the ear muff tube and the both sides counter flange becomes reinforcing rib its hinge (78) (710) two ends, on reinforcing rib, be drilled with simultaneously the hole onesize with the ear muff tube, connect by pin (79), same other two ends are connected on the special-shaped grate bar (76) with pin (79), looking special-shaped grate bar (76) length can the more than one hinge leaf of socket (78) (710), this abnormity grate bar (76) and corresponding hinge (78), (710) can guarantee to reach after shutter abnormity grate bar (76) draws in the space of reducing its occupied window top to greatest extent.
Embodiment 4: securing rod (81) two end joints (712) are the nut that meshes with elevating screws bar (21) (25), it rotates with elevating screws bar (21) (25) and rises or descend, and all the other are enclosed within two end joints (75) diameter of bore of the grate bar (76) on the elevating screws bar (21) (25) greater than elevating screws bar (21) (25) external diameter, move upward its picking-up or move downward by gravity and hinge (78) (710) by securing rod (81) it is left behind.