CN220645774U - Built-in roller shutter window sill - Google Patents

Abstract

The utility model relates to the technical field of built-in roller shutter window bottom beams, and discloses a built-in roller shutter window bottom beam which comprises a window bottom beam body, wherein the window bottom beam body comprises a back plate, clamping seats, limiting strips, a cover plate, clamping blocks and side plates, a window A is arranged in the middle of the back plate, a mounting groove is formed in the inner side of the back plate, seven groups of clamping seats are arranged on the inner side wall of the mounting groove, the limiting strips are symmetrically arranged on the inner side wall of the window A of the back plate, the cover plate is arranged on the front end surface of the back plate, a corresponding number of clamping blocks are arranged on the rear end surface of the cover plate at positions corresponding to the clamping seats, a window B is arranged in the middle of the cover plate, the side plates are symmetrically arranged on the inner side wall of the window B, and processing components which are convenient to drive and disassemble are arranged on the window bottom beam body.

Description

Built-in roller shutter window sill

Technical Field

The utility model relates to the technical field of built-in roller shutter window bottom beams, in particular to a built-in roller shutter window bottom beam.

Background

With the continuous development of energy conservation of buildings, hollow glass windows are widely used nowadays because of good heat insulation, sound insulation, frost prevention and the like. Meanwhile, people need to match the window glass with a curtain for privacy and light shielding. The traditional curtains all have the problems of space occupation and later cleaning. In order to solve this problem, a window blind, an organ curtain, and the like, which have a sun-shading curtain, have been designed in hollow glass.

According to chinese patent publication No. CN209494484U, a built-in roll-up window is disclosed having a window frame; glass is fixedly arranged inside and outside the window frame, and a hollow cavity is formed between the two layers of glass; the upper end of the inside of the window frame is rotationally provided with a roller shutter component; the rolling curtain component comprises a scroll, curtain cloth and a curtain cloth bottom beam; the reel is provided with a winding and unwinding device for controlling winding and unwinding of the reel; the curtain cloth moves up and down in the hollow cavity through winding and unwinding of the scroll; the window frame comprises an upper cross beam, a left side beam, a right side beam, a lower bottom beam, an upper plug-in component and a lower plug-in component; two ends of the upper cross beam are respectively connected with the upper ends of the left side beam and the right side beam through upper inserts; two ends of the lower bottom beam are respectively connected with the lower ends of the left side beam and the right side beam through lower plug-ins; the upper plug-in is provided with a bearing mounting seat; the two ends of the scroll are rotatably connected in the bearing mounting seats at the corresponding sides through bearings. The utility model has compact structural design, good rolling and unwinding effects and difficult cloth falling.

But above-mentioned technical scheme has following problem, among the above-mentioned technical scheme, traditional built-in roller shutter window sill is inconvenient to maintain when using and dismantles, and is very troublesome, and the part is comparatively scattered, dismantles and installs all needs a large amount of time and manpower, and traditional built-in roller shutter window sill, and inconvenient transmission piece's dismantlement combines above-mentioned two points, if window form or glass accident damage and damage together with the roller shutter, inconvenient change, dismantles very troublesome, and transmission piece all is inconvenient to change with the roller shutter.

In order to solve the above problems, a built-in roller shutter window sill is proposed in the present application.

Disclosure of Invention

The utility model aims to provide a built-in roller shutter window bottom beam, which solves the problems that the bottom beam is inconvenient to detach and the roller shutter is inconvenient to replace in the prior art in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a built-in roller shutter window sill, includes window body sill body, window body sill body includes backplate, cassette, spacing, apron, fixture block and curb plate, be equipped with window A in the middle of the backplate, the mounting groove has been seted up to the backplate inboard, and seven groups are installed to this mounting groove inside wall the cassette, the window A inside wall of backplate is bilateral symmetry and installs spacing, the backplate front end face is equipped with the apron, the apron rear end face corresponds the fixture block of corresponding quantity is installed to the position department of cassette, be equipped with window B in the middle of the apron, this window B inside wall is bilateral symmetry installs the curb plate, the processing assembly of convenient transmission and dismantlement is in addition gone up to window body sill body.

Further, seven groups of clamping seats are respectively arranged on the left side, the left middle side, the right middle side, the lower middle side and the upper side of the inner side wall of the backboard, and the number of each group of clamping seats is ten.

Further, the fixture block mainly comprises connecting seat and draw-in ball, the guide way has been seted up to the terminal surface before the cassette, the draw-in groove has been seted up to the cassette inboard, apron rear end face fixedly connected with the connecting seat, the connecting seat is close to corresponding one side fixedly connected with of cassette the draw-in ball, the motion track of draw-in ball is sharp, and this guide way and this draw-in groove all set up on the motion track of draw-in ball, the card ball outside and this guide way and this draw-in groove all sliding connection, the connecting seat comprises the sheet structure of having elastic metal to make.

Further, the processing assembly comprises a driving assembly, a transmission assembly, a connecting sleeve and a rolling curtain assembly, wherein the driving assembly is arranged on the left side of the backboard, the transmission assembly is arranged on the right side of the driving assembly, the rolling curtain assembly is arranged on the right side of the transmission assembly, the connecting sleeve is arranged on the right side of the rolling curtain assembly, and the transmission assembly and the connecting sleeve are arranged in bilateral symmetry.

Further, the driving assembly mainly comprises a shell and a motor, wherein the shell is arranged at the upper part of the left side of the back plate, and the motor is fixedly connected to the inner side of the shell.

Further, the transmission subassembly mainly comprises change cover, transfer line, spring, cardboard, chuck, rotating head, driving lever and inserted block, shell right-hand member fixedly connected with changes the cover, change the inboard fixedly connected with of cover the transfer line, change cover left end inboard fixedly connected with the spring, spring right-hand member fixedly connected with the cardboard, cardboard right-hand member fixedly connected with the chuck, the transfer line right side is equipped with the rotating head, change the cover rear end and seted up the shifting chute, this shifting chute inside wall sliding connection the driving lever, the transversal setting of "cross" font that personally submits of driving lever, change cover bottom fixedly connected with the inserted block, the laminating groove has been seted up in the rotating head left side, the motion trail of chuck is straight line, this laminating groove sets up on the motion trail of chuck, the transfer line is square strip setting, the cardboard inboard with the transfer line laminating, the driving lever runs through change the cover, the transfer line outside through with change the rotating shaft and be connected.

Further, roll up the curtain subassembly and mainly become by bull stick, roll up curtain, counter weight strip, card, magnet A and magnet B, the right-hand member fixedly connected with of turning round the bull stick, bull stick bottom fixedly connected with roll up the curtain, roll up curtain bottom fixedly connected with the counter weight strip, both ends all fixedly connected with about the counter weight strip the card, counter weight strip bottom fixedly connected with magnet A, magnet A bottom is equipped with magnet B, magnet B bottom with the window A inside wall bottom fixed connection of backplate.

Further, the limiting strip and the side plates are all arranged in an L shape, the minimum gap between the limiting strip and the side plates is 5mm, and the outer side of the card is in sliding connection with the limiting strip and the side plates.

Further, the structure of the connecting sleeve is the same as that of the rotating sleeve, the right end of the rotating rod is further provided with another rotating head, the rotating rod penetrates through the rotating sleeve and the surface of the connecting sleeve, the outer ring at the left side of the rotating head is provided with a separating groove, the movement track of the deflector rod is in a straight line shape, the separating groove is arranged on the movement track of the deflector rod, and the outer side of the deflector rod is in sliding connection with the separating groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the back plate is conveniently opened while the strength of the window body bottom beam body is maintained by the window body bottom beam body, so that the subsequent maintenance operation is convenient, the design is simple, the opening operation is also convenient, and the time and the labor are saved.

2. According to the utility model, the counterweight bar provides the counterweight through the arranged processing assembly, the stable unfolding of the roller shutter is ensured, the magnet A is attached to the magnet B, the window A of the backboard is sealed, the shading effect is improved, the light leakage of the roller shutter is reduced, the roller shutter is convenient to use, the dismounting and the maintenance operation are convenient, and the roller shutter is convenient to replace when being damaged accidentally.

Drawings

FIG. 1 is a perspective view of the overall structure of a sill of a built-in roll-up window of the present utility model;

FIG. 2 is a schematic view of an installation structure of a back panel of a bottom beam of a built-in roller shutter window according to the present utility model;

FIG. 3 is a schematic view of the mounting structure of a cover plate of a bottom beam of a built-in roller shutter window according to the present utility model;

FIG. 4 is a schematic view of the mounting structure of a processing assembly incorporating a roller shutter sill in accordance with the present utility model;

FIG. 5 is a schematic view of the mounting structure of a drive assembly for a bottom beam of a built-in roller shutter according to the present utility model;

FIG. 6 is a schematic view of the mounting structure of a drive assembly for a bottom beam of a built-in roller shutter according to the present utility model;

FIG. 7 is a schematic view of the mounting structure of a roller shutter assembly incorporating a roller shutter window sill of the present utility model;

FIG. 8 is a schematic view of the installation structure of a snap ball with a roller shutter sill built in accordance with the present utility model;

in the figure:

1. a window sill body; 11. a back plate; 12. a clamping seat; 13. a limit bar; 14. a cover plate; 15. a clamping block; 151. a connecting seat; 152. ball clamping; 16. a side plate;

2. a processing assembly; 21. a drive assembly; 211. a housing; 212. a motor; 22. a transmission assembly; 221. a rotating sleeve; 222. a transmission rod; 223. a spring; 224. a clamping plate; 225. a chuck; 226. turning the head; 227. a deflector rod; 228. inserting blocks; 23. connecting sleeves; 24. a roller shutter assembly; 241. a rotating rod; 242. a roller shutter; 243. a counterweight bar; 244. a card; 245. a magnet A; 246. and a magnet B.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-8, the present utility model provides a technical solution: the window sill body 1 comprises a back plate 11, clamping seats 12, a limit strip 13, a cover plate 14, clamping blocks 15 and side plates 16, wherein a window A is arranged in the middle of the back plate 11, a mounting groove is formed in the inner side of the back plate 11, seven groups of clamping seats 12 are arranged on the inner side wall of the mounting groove, the limit strip 13 is symmetrically arranged on the inner side wall of the window A of the back plate 11 left and right, the cover plate 14 is arranged on the front end surface of the back plate 11, the clamping blocks 15 with the corresponding number are arranged at the position of the rear end surface of the cover plate 14 corresponding to the clamping seats 12, a window B is arranged in the middle of the cover plate 14, the side plates 16 are symmetrically arranged on the inner side wall of the window B, a processing assembly 2 convenient to drive and disassemble the window sill body 1 is arranged on the window sill body, when maintenance is needed, prying holes are reserved on one side corner of the cover plate 14 only from one corner of the cover plate 14, then the cover plate 14 is hard pulled, the clamping ball 152 is separated from the clamping groove of the clamping seat 12, the cover plate 14 is taken down, the cover plate 14 has elasticity, the connecting seat 151 also has elasticity, the clamping ball 152 is conveniently separated from the clamping groove of the clamping seat 12, the limiting strip 13 and the side plate 16 keep the structure and strength of the profile, the roller shutter 242 is conveniently limited, the cover plate 14 is aligned with the back plate 11 when being installed and reset, the clamping ball 152 is aligned with the clamping seat 12, the cover plate 14 is pressed with force, the cover plate 14 pushes the connecting seat 151 to drive the clamping ball 152 to slide backwards from the guiding groove of the clamping seat 12, then the clamping ball 152 slides into the clamping groove of the clamping seat 12, then the cover plate 14 is pressed for a circle, seven groups of clamping balls 152 are clamped with the clamping groove of the clamping seat 12, the back plate 11 is conveniently opened while the strength of the window body bottom beam body 1 is further maintained, the subsequent maintenance operation is conveniently carried out, the design is simple, the opening operation is also convenient, the processing assembly 2 is convenient to seal the window A of the backboard 11, improves the shading effect, reduces the light leakage of the roller shutter 242, is convenient to use, is convenient to detach and repair, and is convenient to replace when the roller shutter 242 is accidentally damaged.

Seven groups of clamping seats 12 are respectively arranged on the left side, the left middle, the right side, the right middle, the lower side, the lower middle and the upper side of the inner side wall of the backboard 11, and the number of each group of clamping seats 12 is ten.

The clamping block 15 mainly comprises a connecting seat 151 and a clamping ball 152, a guide groove is formed in the front end face of the clamping seat 12, a clamping groove is formed in the inner side of the clamping seat 12, the connecting seat 151 is fixedly connected to the rear end face of the cover plate 14, the clamping ball 152 is fixedly connected to one side, close to the corresponding clamping seat 12, of the connecting seat 151, the movement track of the clamping ball 152 is in a straight line shape, the guide groove and the clamping groove are both formed in the movement track of the clamping ball 152, the outer side of the clamping ball 152 is in sliding connection with the guide groove and the clamping groove, and the connecting seat 151 is formed by a sheet-shaped structure made of elastic metal.

The processing assembly 2 comprises a driving assembly 21, a transmission assembly 22, a connecting sleeve 23 and a rolling curtain assembly 24, wherein the driving assembly 21 is arranged on the left side of the back plate 11, the transmission assembly 22 is arranged on the right side of the driving assembly 21, the rolling curtain assembly 24 is arranged on the right side of the transmission assembly 22, the connecting sleeve 23 is arranged on the right side of the rolling curtain assembly 24, and the transmission assembly 22 and the connecting sleeve 23 are arranged in bilateral symmetry.

The driving assembly 21 mainly comprises a housing 211 and a motor 212, wherein the housing 211 is arranged at the upper part of the left side of the back plate 11, and the motor 212 is fixedly connected to the inner side of the housing 211.

The transmission assembly 22 mainly comprises a rotating sleeve 221, a transmission rod 222, a spring 223, a clamping plate 224, a clamping head 225, a rotating head 226, a deflector 227 and an inserting block 228, wherein the right end of a shell 211 is fixedly connected with the rotating sleeve 221, the inner side of the rotating sleeve 221 is fixedly connected with the transmission rod 222, the inner side of the left end of the rotating sleeve 221 is fixedly connected with the spring 223, the right end of the spring 223 is fixedly connected with the clamping plate 224, the right end of the clamping plate 224 is fixedly connected with the clamping head 225, the right side of the transmission rod 222 is provided with the rotating head 226, the rear end of the rotating sleeve 221 is provided with a deflector 227, the cross section of the deflector 227 is in a cross shape, the bottom end of the rotating sleeve 221 is fixedly connected with the inserting block 228, the left side of the rotating head 226 is provided with a jointing groove, the motion track of the clamping head 225 is in a straight line shape, the jointing groove is arranged on the motion track of the clamping head 225, the inner side of the clamping plate 224 is in a square shape, the driving rod 222 is jointed with the transmission rod 222, the driving rod 222 penetrates through the rotating sleeve 221, and the outer side of the transmission rod 222 is rotationally connected with the rotating sleeve 221 through a rotating shaft.

The roller shutter assembly 24 mainly comprises a rotating rod 241, a roller shutter 242, a counterweight strip 243, a card 244, a magnet A245 and a magnet B246, wherein the right end of the rotating head 226 is fixedly connected with the rotating rod 241, the bottom end of the rotating rod 241 is fixedly connected with the roller shutter 242, the bottom end of the roller shutter 242 is fixedly connected with the counterweight strip 243, the left end and the right end of the counterweight strip 243 are fixedly connected with the card 244, the bottom end of the counterweight strip 243 is fixedly connected with the magnet A245, the bottom end of the magnet A245 is provided with the magnet B246, the bottom end of the magnet B246 is fixedly connected with the inner side wall bottom end of a window A of the backboard 11, the clamping plate 224 drives the rotating head 226 at the left end to rotate through the clamping head 225 so as to drive the rotating rod 241 to rotate, the rotating rod 241 rotates to roll or unwind the roller shutter 242, the card 244 slides in the gap between the limiting strip 13 and the side plate 16, the counterweight strip 243 is provided to ensure the stability of unwinding of the roller shutter 242, the magnet A245 is attached to the magnet B246, the window A of the backboard 11 is sealed, the light leakage of the roller shutter 242 is improved, the light leakage of the roller shutter 242 is reduced, the use is convenient, the maintenance operation is convenient, and the replacement of the roller shutter 242 is accidentally damaged.

The limiting strip 13 and the side plate 16 are all L-shaped, the minimum gap between the limiting strip 13 and the side plate 16 is 5mm, the outer side of the card 244 is in sliding connection with the limiting strip 13 and the side plate 16, the shading effect is improved, the light leakage of the roller shutter 242 is reduced, and the roller shutter is convenient to use.

The structure of the connecting sleeve 23 is the same as that of the rotating sleeve 221, the right end of the rotating rod 241 is also provided with another rotating head 226, the rotating rod 241 penetrates through the surfaces of the rotating sleeve 221 and the connecting sleeve 23, the outer ring at the left side of the rotating head 226 is provided with a separating groove, the movement track of the deflector rod 227 is in a straight line shape, the separating groove is arranged on the movement track of the deflector rod 227, and the outer side of the deflector rod 227 is in sliding connection with the separating groove.

Working principle: when the device needs maintenance, only a prying hole is required to be pried from one corner of the cover plate 14 [ can be reserved at one corner of one side of the cover plate 14 ], then the cover plate 14 is pulled hard, so that the clamping balls 152 are separated from the clamping grooves of the clamping seat 12, then the cover plate 14 is taken down, the cover plate 14 has elasticity, the connecting seat 151 also has elasticity, the clamping balls 152 are conveniently separated from the clamping grooves of the clamping seat 12, the limiting strips 13 and the side plates 16 keep the structure and strength of the section bar, the roller shutter 242 is conveniently limited, when the device is reset, the cover plate 14 is aligned with the backboard 11, the clamping balls 152 are aligned with the clamping seat 12, the cover plate 14 is pushed by force, the connecting seat 151 is pushed by the cover plate 14 to drive the clamping balls 152 to slide backwards from the guiding grooves of the clamping seat 12, then the clamping balls 152 slide into the clamping grooves of the clamping seat 12, then the cover plate 14 is pushed for a circle, and the seven groups of clamping balls 152 are all clamped with the clamping grooves of the clamping seat 12, the back plate 11 is convenient to open while the strength of the window sill body 1 is maintained, the subsequent maintenance operation is convenient, the design is simple, the opening operation is convenient, time and labor are saved, after the back plate 11 is opened, the deflector 227 can be stirred to drive the chuck 225 on the chuck plate 224 to be separated from the rotary head 226 at the left end of the rotary rod 241, then the rotary rod 241 is supported to move upwards, the rotary head 226 at the left end is separated from the rotary sleeve 221, the rotary head 226 at the right end is separated from the connecting sleeve 23, the disassembly of the rotary rod 241 is further completed, the maintenance and replacement operation on the roller shutter assembly 24 are further facilitated, the roller shutter assembly 24 is reset after the maintenance and replacement operation is completed, the two rotary heads 226 are correspondingly reset, at the moment, the spring 223 pushes the chuck plate 224 to be clamped with the laminating groove of the rotary head 226 at the left end, the motor 212 in the shell 211 operates to drive the transmission rod 222 to rotate, the transmission rod 222 drives the spring 223 to rotate, and then drives the chuck plate 224 to rotate, cardboard 224 drives the turning head 226 rotation of left end and then drives bull stick 241 rotation through chuck 225, bull stick 241 rotates and rolls up or unwinds roller shutter 242, card 244 slides in spacing 13 and curb plate 16's clearance, and counter weight strip 243 provides the counter weight, guarantee roller shutter 242 stability of expansion, magnet A245 and magnet B246 laminating, seal the window A of backplate 11, improve the effect of shading, reduce roller shutter 242's light leak, convenient to use, convenient dismantlement maintenance work, change when convenient roller shutter 242 accident damages.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (9)

1. A built-in roller shutter window sill, characterized in that: including window form floorpan body (1), window form floorpan body (1) includes backplate (11), cassette (12), spacing (13), apron (14), fixture block (15) and curb plate (16), be equipped with window A in the middle of backplate (11), the mounting groove has been seted up to backplate (11) inboard, and seven groups are installed to this mounting groove inside wall cassette (12), the window A inside wall of backplate (11) is bilateral symmetry and installs spacing (13), the preceding terminal surface of backplate (11) is equipped with apron (14), apron (14) rear end face corresponds the position department of cassette (12) installs fixture block (15) of corresponding quantity, be equipped with window B in the middle of apron (14), this window B inside wall is bilateral symmetry and installs curb plate (16), still have convenient transmission and processing assembly (2) of dismantling on window form floorpan body (1).

2. A built-in roller shutter sill according to claim 1 wherein: seven groups of clamping seats (12) are respectively arranged at the left side, the left middle, the right side, the right middle, the lower side, the lower middle and the upper side of the inner side wall of the back plate (11), and the number of each group of clamping seats (12) is ten.

3. A built-in roller shutter sill according to claim 1 wherein: the clamping block (15) mainly comprises a connecting seat (151) and a clamping ball (152), a guide groove is formed in the front end face of the clamping seat (12), a clamping groove is formed in the inner side of the clamping seat (12), the rear end face of the cover plate (14) is fixedly connected with the connecting seat (151), one side, close to the corresponding clamping seat (12), of the connecting seat (151) is fixedly connected with the clamping ball (152), the movement track of the clamping ball (152) is linear, the guide groove and the clamping groove are both arranged on the movement track of the clamping ball (152), the outer side of the clamping ball (152) is in sliding connection with the guide groove and the clamping groove, and the connecting seat (151) is formed by a sheet-shaped structure made of elastic metal.

4. A built-in roller shutter sill according to claim 1 wherein: the processing assembly (2) comprises a driving assembly (21), a transmission assembly (22), a connecting sleeve (23) and a roller shutter assembly (24), wherein the driving assembly (21) is arranged on the left side of the back plate (11), the transmission assembly (22) is arranged on the right side of the driving assembly (21), the roller shutter assembly (24) is arranged on the right side of the transmission assembly (22), the connecting sleeve (23) is arranged on the right side of the roller shutter assembly (24), and the transmission assembly (22) and the connecting sleeve (23) are arranged in bilateral symmetry.

5. A built-in roller shutter sill according to claim 4 wherein: the driving assembly (21) mainly comprises a shell (211) and a motor (212), wherein the shell (211) is arranged at the upper part of the left side of the back plate (11), and the motor (212) is fixedly connected to the inner side of the shell (211).

6. A built-in roller shutter sill according to claim 5 wherein: the transmission assembly (22) mainly comprises a rotating sleeve (221), a transmission rod (222), a spring (223), a clamping plate (224), a clamping head (225), a rotating head (226), a shifting rod (227) and an inserting block (228), wherein the right end of the shell (211) is fixedly connected with the rotating sleeve (221), the inner side of the rotating sleeve (221) is fixedly connected with the transmission rod (222), the inner side of the left end of the rotating sleeve (221) is fixedly connected with the spring (223), the right end of the spring (223) is fixedly connected with the clamping plate (224), the right end of the clamping plate (224) is fixedly connected with the clamping head (225), the right side of the transmission rod (222) is provided with the rotating head (226), the rear end of the rotating sleeve (221) is provided with a shifting groove, the shifting groove is slidingly connected with the shifting rod (227), the cross section of the shifting rod (227) is in a cross-shaped arrangement, the bottom end of the rotating sleeve (221) is fixedly connected with the inserting block (228), the left side of the rotating head (226) is provided with the clamping groove, the linear track (225) is arranged on the inner side of the linear track (225), the linear track (222) is arranged on the linear track (222), the outer side of the transmission rod (222) is rotationally connected with the rotating sleeve (221) through a rotating shaft.

7. A built-in roller shutter sill according to claim 6 wherein: the roller shutter assembly (24) mainly comprises a rotating rod (241), a roller shutter (242), a counterweight strip (243), a card (244), a magnet A (245) and a magnet B (246), wherein the right end of the rotating head (226) is fixedly connected with the rotating rod (241), the bottom end of the rotating rod (241) is fixedly connected with the roller shutter (242), the bottom end of the roller shutter (242) is fixedly connected with the counterweight strip (243), the left end and the right end of the counterweight strip (243) are fixedly connected with the card (244), the bottom end of the counterweight strip (243) is fixedly connected with the magnet A (245), the bottom end of the magnet A (245) is provided with the magnet B (246), and the bottom end of the magnet B (246) is fixedly connected with the bottom end of the inner side wall of a window A of the backboard (11).

8. A built-in roller shutter sill according to claim 7 wherein: the limiting strip (13) and the side plates (16) are all in an L-shaped arrangement, the minimum gap between the limiting strip (13) and the side plates (16) is 5mm, and the outer side of the card (244) is in sliding connection with the limiting strip (13) and the side plates (16).

9. A built-in roller shutter sill according to claim 7 wherein: the structure of adapter sleeve (23) with change cover (221) the same, another still install bull stick (241) right-hand member rotating head (226), bull stick (241) run through change cover (221) with the surface of adapter sleeve (23), the separating groove has been seted up to rotating head (226) left side outer lane, the motion track of driving lever (227) is the straight line, and this separating groove sets up on the motion track of driving lever (227), driving lever (227) outside and this separating groove sliding connection.