阅读说明：本技术 伸缩百叶篷 (Telescopic louver awning ) 是由 黄堂虹 赵天才 张世超 于 2020-05-24 设计创作，主要内容包括：本发明提供了一种伸缩百叶篷,属于遮阳篷技术领域。它解决了现有百叶篷只能满足传动件带动百叶板旋转起到打开关闭作用,效果单一且采光不理想等问题。本发明包括顶篷、顶篷安装框架及顶篷开合机构,顶篷包括若干百叶盖板,顶篷开合机构设置在顶篷安装框架上,其能驱动百叶盖板来回运动并在来回运动过程中实现翻转开合,若干百叶盖板来回运动并旋转至闭合状态时,相邻的两个百叶盖板首位对接在一起。本发明伸缩百叶篷,不仅顶篷牢靠,且顶篷整体能实现来回伸缩,在伸缩过程,顶篷的若干百叶板还能实现旋转扣合关闭实现遮阳避雨功能,本伸缩百叶篷使用方便,且能大大提高采光效果,满足用户的不同需求。(The invention provides a telescopic louver awning, and belongs to the technical field of awning. It has solved current tripe covering or awning on a car, boat, etc. and can only satisfy the driving medium and drive the shutter plate rotation and play and open the effect of closing, and the effect is single and the unsatisfactory scheduling problem of daylighting. The ceiling comprises a ceiling, a ceiling mounting frame and a ceiling opening and closing mechanism, wherein the ceiling comprises a plurality of shutter cover plates, the ceiling opening and closing mechanism is arranged on the ceiling mounting frame and can drive the shutter cover plates to move back and forth and realize overturning opening and closing in the back and forth movement process, and when the shutter cover plates move back and forth and rotate to a closed state, the adjacent two shutter cover plates are butted together in the head position. The telescopic louver awning disclosed by the invention has the advantages that the awning is firm, the whole awning can be stretched back and forth, in the telescopic process, the plurality of louver boards of the awning can be rotated and buckled to be closed to realize the functions of shading sun and avoiding rain, the telescopic louver awning is convenient to use, the lighting effect can be greatly improved, and different requirements of users are met.)

1. The telescopic louver awning is characterized by comprising an awning, an awning installation frame and an awning opening and closing mechanism, wherein the awning comprises a plurality of louver cover plates, the awning opening and closing mechanism is arranged on the awning installation frame and can drive the louver cover plates to move back and forth and realize overturning opening and closing in the back and forth movement process, and when the louver cover plates move back and forth and rotate to a closed state, two adjacent louver cover plates are butted together in the head position.

2. The retractable louver awning as claimed in claim 1, wherein the canopy opening and closing mechanism comprises at least one set of retractable brackets disposed on the canopy mounting frame and connected to the ends of the louver boards, the retractable brackets can drive the louver boards to move back and forth relative to the canopy mounting frame, and the louver boards can be turned over during the back and forth movement.

3. The retractable louver awning as claimed in claim 1, wherein the canopy opening and closing mechanism comprises two sets of retractable brackets disposed on the canopy mounting frame, each louver cover is disposed between the two sets of retractable brackets, two ends of each louver cover are respectively connected to the retractable brackets on the corresponding sides, the retractable brackets can drive each louver cover to move back and forth relative to the canopy mounting frame, and the movement of each louver cover back and forth can be reversed.

4. The retractable awning as claimed in claim 3, wherein said retractable support is a scissor-type retractable support, said retractable support comprising a plurality of scissor-type retractable units.

5. The retractable awning as claimed in claim 4, wherein two opposite retractable units of the two sets of retractable brackets are respectively connected to two ends of the corresponding louver boards, the retractable units include two cross-connecting pieces, two ends of each louver board are connected to two connecting pieces of the corresponding two retractable units in the same tilting direction, and the tilting direction of each louver board is the same.

6. A retractable awning as claimed in claim 3, wherein one end of said retractable frame is a drive end, said drive end being connected to an electric drive mechanism or a manual drive mechanism.

7. The retractable awning as claimed in claim 5, wherein said canopy mounting frame comprises two oppositely disposed first beams, each of said sets of retractable brackets being slidably connected to the respective first beam.

8. The retractable louver awning as claimed in claim 7, wherein each first cross member has a track, and each corresponding retractable bracket has a sliding member, which is engaged with the track of the corresponding first cross member.

9. The retractable awning as claimed in claim 8, wherein the sliding members are provided on telescopic units, at least one of which is provided with a sliding member.

10. The telescopic louver awning as claimed in claim 9, wherein the two fork-shaped connecting pieces of the telescopic unit are each provided with a connecting hole in the middle, and the two connecting pieces are rotatably connected together.

Technical Field

The invention relates to the technical field of sunshades, in particular to a telescopic louver awning.

Background

The sunshade curtain is widely used in real life, and has the energy-saving effect of blocking outdoor heat from flowing into a room, and can reflect strong sunlight into the room in a diffused light mode, so that the indoor light is bright and is not dazzling. The living space of people is extended from indoor to outdoor, and a leisure idea of courtyard life is conveyed while a new living space is created.

In order to meet the requirements of the existing outdoor awning products, various awning is available on the market, and the awning is provided with a crank arm type awning, a door head awning and a four-corner awning, wherein the awning is a product mainly shaded by a cloth cover material, the cloth cover has an aging problem, the service life of the product is shortened, the aging damage problem is very easy to occur in the use process, and certain potential safety hazards exist under the severe weather conditions of typhoon, rainstorm and snowfall. Therefore, the unit technicians propose the metal awning to prolong the service life of the product and improve the safety and stability.

The rotary louver awning with the publication number of CN207314686U comprises an awning frame and an awning surface supported by the awning frame, wherein the awning frame is formed by connecting cross beams and upright posts, the awning surface is formed by a plurality of louver boards which are distributed side by side, each louver board is hinged with the cross beam, and the cross beam is also provided with a driving device for driving the louver boards to rotate; the driving device comprises a gear transmission part, a swinging part which is connected with the gear rotating part and driven by the gear rotating part to swing, and a push rod which is connected with the swinging part, wherein the push rod is connected with the louver board. This tripe covering or awning on a car, boat, etc. accessible manual or electric control shutter plate's rotation, the covering or awning on a car, boat, etc. face when being in the complete closure has sunshade, keeps off torrential rain, anti snow function, and the covering or awning on a car, boat, etc. face is very firm, uses more safety and stability.

Aiming at the defects of the awning surface made of cloth cover materials, the aluminum louver boards are used for replacing the cloth cover, the service life is prolonged, but some problems still exist: can only satisfy the driving medium and drive the shutter plate rotation and play and open the effect of closing, the effect is single and daylighting is unsatisfactory.

Disclosure of Invention

The invention aims to solve the problems of the existing awning, and provides a telescopic louver awning which is firm in awning surface, the whole awning can be stretched back and forth, a plurality of louver plates of the awning can be opened and closed in a rotating mode in the stretching process, the telescopic louver awning is convenient to use, the lighting effect can be greatly improved, and different requirements of users are met.

The purpose of the invention can be realized by the following technical scheme:

the telescopic louver awning is characterized by comprising an awning, an awning installation frame and an awning opening and closing mechanism, wherein the awning comprises a plurality of louver cover plates, the awning opening and closing mechanism is arranged on the awning installation frame and can drive the louver cover plates to move back and forth and realize overturning opening and closing in the back and forth movement process, and when the louver cover plates move back and forth and rotate to a closed state, two adjacent louver cover plates are butted together in the head position.

The two ends of the shutter cover plate and the head and the tail of the shutter cover plate respectively correspond to the four sides of the shutter cover plate.

Preferably, the telescopic louver awning further comprises a support structure for the canopy mounting frame.

Preferably, the canopy opening and closing mechanism comprises at least one group of telescopic brackets, the telescopic brackets are arranged on the canopy installation frame and connected with the end parts of the shutter cover plates, the telescopic brackets can drive the shutter cover plates to move back and forth relative to the canopy installation frame, and the shutter cover plates can be turned over in the back and forth movement process.

Preferably, the canopy opening and closing mechanism comprises two sets of telescopic brackets arranged on the canopy installation frame, each louver cover plate is arranged between the two sets of telescopic brackets, two ends of each louver cover plate are respectively connected with the telescopic brackets on the corresponding sides, the telescopic brackets can drive each louver cover plate to move back and forth relative to the canopy installation frame, and the turnover of each louver cover plate in the process of moving back and forth is realized.

The two groups of telescopic brackets are parallel to each other.

Preferably, the telescopic bracket is a scissor-type telescopic bracket, and the telescopic bracket comprises a plurality of scissor-type telescopic units.

Preferably, two opposite telescopic units on the two groups of telescopic supports are respectively connected with two ends of the corresponding shutter cover plates, each telescopic unit comprises two connecting pieces in cross connection, two ends of each shutter cover plate are connected with two connecting pieces in the same inclination direction of the corresponding two telescopic units, and the inclination directions of the shutter cover plates are the same.

Preferably, one end of the telescopic support is a driving end, and the driving end is connected with an electric driving mechanism or a manual driving mechanism.

Only one of the two groups of telescopic supports is connected with the power mechanism. The two groups of telescopic supports can move and stretch at the same time, so that the louver cover plate is driven to move back and forth and can be turned over to be opened and closed. When the canopy is in a closed state, the shutter cover plates can be buckled with each other.

Preferably, the roof mounting frame comprises two first cross beams which are arranged oppositely, and the telescopic brackets are respectively connected with the first cross beams on the corresponding sides in a sliding manner.

Each group of telescopic supports are respectively connected with the first cross beam on the corresponding side in a sliding manner, and each telescopic support can realize stretching in the sliding process.

Preferably, each first cross beam is provided with a rail, each corresponding telescopic bracket is provided with a sliding part, and the sliding part is clamped on the rail of the corresponding first cross beam.

The rails on the first cross beams are horizontally arranged.

Preferably, the sliding parts are arranged on the telescopic units, and at least one telescopic unit is provided with one sliding part.

Preferably, each telescopic unit is provided with a sliding part.

Each sliding part or rolling part is clamped in the corresponding rail in a sliding or rolling manner and can slide or roll back and forth relative to the rail, wherein the sliding part is not arranged on the last telescopic unit positioned on the driving end side of the telescopic support, and the riveting piece on the telescopic unit is required to be fixedly connected with the roof installation frame.

Preferably, the middle parts of the two connecting pieces of the telescopic unit, which are in a fork shape, are provided with connecting holes, and the two connecting pieces are rotatably connected together through riveting pieces arranged at the two connecting holes.

The riveting piece penetrates through the connecting holes in the two connecting pieces of the corresponding telescopic units to rotatably connect the two connecting pieces together (the two connecting pieces can rotate relative to the riveting piece).

Preferably, the riveting member includes a body and a limiting member disposed separately from the body, a first limiting ring is disposed at one end of the body, the other end of the body is fixedly connected with the limiting member, one end of the limiting member is connected with the body, a second limiting ring is disposed at the other end of the limiting member, and the size of the connecting hole is larger than the size of the body and smaller than the size of the first limiting ring and the size of the second limiting ring.

The two connecting pieces can be rotationally connected together through the riveting piece.

Preferably, the sliding part is a pulley, and the pulley is connected with the riveting piece on the corresponding telescopic unit through a fixing piece.

Preferably, the pulley is a concave wheel, the middle part of the pulley is concave, and flanges are arranged at two ends of the pulley.

Preferably, the fixing part is a screw with a thread at the end part, a through hole is axially arranged on the pulley, and a screw hole matched with the screw is arranged at one end of each riveting part far away from the limiting part.

The size of through-hole is greater than the size of screw pole portion, is less than the size of screw nut, and the riveting piece will correspond two connection pieces of flexible unit and link together the back, has the one end of screw and moves towards the first crossbeam that corresponds the side, and the pulley card is in track department, through screw and riveting piece fixed connection.

Preferably, two ends of each louver cover plate are connected with the corresponding telescopic bracket through a protection connecting structure.

Preferably, the protection connection structure comprises a plurality of cover plate seal plates, the cover plate seal plates correspond to the louver cover plates one by one, and each cover plate seal plate is arranged between the louver cover plate and the corresponding telescopic unit and connects the louver cover plate and the corresponding telescopic unit together.

Both here refer to the blind cover and the corresponding telescopic unit.

Preferably, the louver boards include a board body and fastening portions disposed at two ends of the board body, the fastening portions being a first fastening portion and a second fastening portion, and the first fastening portion and the second fastening portion mounted on two adjacent louver boards on the ceiling board mounting frame can be fastened together.

Preferably, the first buckle part and the second buckle part are integrally arranged with the cover plate body.

The width of the first buckling part and the second buckling part is the same as that of the cover plate body.

Preferably, the first buckle part and the second buckle part are arc-shaped in cross section, and the radian size of the first buckle part is larger than that of the second buckle part.

The arrangement is that when the canopy is in a closed cover state, the first buckling part can be buckled on the second buckling part of the adjacent shutter cover plates, and the two adjacent shutter cover plates can be buckled together to form the closed canopy, so that the effects of shielding wind and rain are achieved.

Preferably, the first buckle part comprises an inclined surface and a curved surface, and the inclination angle between the inclined surface and the cover plate body is 20-80 degrees.

Preferably, the inclined plane and the curved surface of the first buckling part are integrally arranged, the lower part of the inclined plane is in butt joint with the cover plate body, and the upper part of the inclined plane is in butt joint with the curved surface.

The second buckling part and the first buckling part are the same in shape, and the size of the first buckling part is larger than that of the second opening part, so that the first buckling part and the second buckling part can be buckled with each other. The first buckling part and the second buckling part are hook-shaped.

Preferably, the cover plate body is provided with a reinforcing structure, the reinforcing structure comprises a reinforcing plate, one end of the reinforcing plate is connected with the first buckling part, and the other end of the reinforcing plate is connected with the cover plate body.

Preferably, the bending directions of the bending surfaces of the first buckling part and the second buckling part are the same.

Preferably, one end of the reinforcing plate is connected with the inclined surface of the first buckling part, the other end of the reinforcing plate is connected with the cover plate body through a supporting plate, and the supporting plate inclines towards the first buckling part.

Preferably, the width of the reinforcing plate and the support plate is the same as that of the cover plate body.

Preferably, a drainage groove is formed between the support plate and the second buckling part.

Preferably, the reinforcing plate is parallel to the cover plate body, and the support plate is parallel to the inclined plane of the first buckle part.

Compared with the prior art, the telescopic louver awning disclosed by the invention has the advantages that the awning is firm, the whole awning can be stretched back and forth, in the telescopic process, the louver cover plates of the awning can be rotated and buckled to close to realize the functions of shading sun and avoiding rain, the telescopic louver awning is convenient to use, the lighting effect can be greatly improved, and different requirements of users are met.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the fully open position of the present invention;

FIG. 3 is a schematic view of the present invention in a semi-open state;

FIG. 4 is a schematic view of the fully closed state of the present invention;

FIG. 5 is a side view of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 5;

FIG. 7 is a schematic view of the telescopic bracket of the present invention;

FIG. 8 is an exploded view of the blind plate, cover plate seal plate and telescoping bracket of the present invention;

FIG. 9 is an exploded view of the first beam, blind-blind cover, cover plate seal and telescoping support of the present invention;

FIG. 10 is an enlarged view of FIG. 9 at B;

FIG. 11 is a schematic view of the telescoping support in a retracted state;

FIG. 12 is a schematic view of the telescoping legs in an open position;

FIG. 13 is an exploded view of the telescoping bracket, rivet and pulley;

FIG. 14 is a schematic view of a portion of the present invention;

FIG. 15 is a schematic view of a portion of the present invention;

fig. 16 is a schematic diagram of the telescopic track of the telescopic bracket.

In the figure, 1, a ceiling; 2. a louver cover plate; 3. a first cross member; 4. a telescopic bracket; 5. a telescopic unit; 6. connecting sheets; 7. a track; 8. riveting a connecting piece; 9. a first limit ring; 10. a second stop collar; 11. an articulation member; 12. a pulley; 13. a cover plate closing plate; 14. a first buckle part; 15. a second buckle part; 16. a bevel; 17. a curved surface; 18. a reinforcing plate; 19. a water discharge tank; 20. a canopy mounting frame; 21. a second cross member; 22. and (4) supporting the cross beam.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 16, the present invention provides a retractable louver canopy, which includes a canopy 1, a canopy installation frame 20, a supporting structure of the canopy 1, and a canopy opening and closing mechanism.

The roof 1 comprises a plurality of blind plates 2, two ends of each blind plate 2 are connected with a roof mounting frame 20, and the roof mounting frame 20 is formed by butt-jointing two oppositely arranged first cross beams 3 and two oppositely arranged second cross beams 21 end to end. Preferably, the roof mounting frame 20 is a square frame.

The support structure includes four uprights connected to the roof mounting frame 20, the four uprights being disposed below four corners of the roof mounting frame 20. The four posts are of equal length and are vertically disposed perpendicular to the plane formed by the canopy mounting frame 20.

The canopy opening and closing mechanism of the present invention comprises at least one set of telescoping legs 4. In one embodiment, the canopy opening and closing mechanism is provided with two sets of telescopic supports 4.

Two sets of telescopic bracket 4 correspond respectively and set up on two first crossbeams 3 of roof installation frame 20 and be connected with the both ends of above-mentioned each tripe apron 2 respectively, and telescopic bracket 4 can drive each tripe apron 2 and make a round trip to stretch out and draw back, and each tripe apron 2 of flexible process can realize rotatoryly.

In particular, the telescopic support 4 is a scissor-type telescopic support 4, the telescopic support 4 comprising a number of scissor-type telescopic units 5. Each telescopic unit 5 comprises two cross-connected links 6. The two ends of the connecting piece 6 of two adjacent telescopic units 5 are rotatably connected together through a hinge 11, as shown in fig. 7. Thus, when a force is applied to one end of the telescopic bracket 4, the telescopic bracket 4 is deformed.

Two opposite telescopic units 5 on the two groups of telescopic supports 4 are respectively connected with two ends of the corresponding shutter cover plates 2, and two ends of each shutter cover plate 2 are connected with two connecting pieces 6 corresponding to the two telescopic units 5 in the same inclination direction.

Each louver cover plate 2 is arranged on two telescopic units 5 corresponding to the two telescopic brackets 4 in a row, and the inclination directions of the louver cover plates 2 are the same.

Each group of telescopic supports 4 is respectively connected with the first cross beam 3 at the corresponding side in a sliding manner, and each telescopic support 4 can realize the telescopic effect in the sliding process. Each first beam 3 is provided with a horizontal rail 7.

A sliding part is arranged on each corresponding telescopic bracket 4, and the sliding part is clamped in the corresponding side track 7. The sliding parts are positioned on the telescopic units 5, and at least one telescopic unit 5 is provided with one sliding part. Preferably, each telescopic unit 5 is provided with a slider.

Each sliding piece or rolling piece is clamped in the corresponding rail 7 in a sliding or rolling manner and can slide or roll back and forth relative to the rail 7, wherein the sliding piece is not arranged on the last telescopic unit 5 positioned on the driving end side of the telescopic bracket 4, and the riveting piece 8 on the telescopic unit 5 needs to be fixedly connected with the roof installation frame 20.

Each slider is slidably engaged with the corresponding rail 7 and can slide back and forth with respect to the rail 7.

In order to allow rain water to flow out of one side of the canopy 1, the rails 7 provided on the two first transverse members 3 can be raised and lowered at a higher level, so that the entire canopy 1 is tilted slightly to one side. This allows rain water to drain along one side of the roof 1, i.e. in a direction towards the side of the first cross member 3.

The telescopic supports 4 are arranged in parallel, wherein one end of one telescopic support 4 is a driving end, and the driving end is connected with an electric driving mechanism (motor) or a manual driving mechanism.

The motor is a linear driving motor and can drive the driving end of the telescopic bracket 4 to move back and forth.

The middle parts of the two connecting sheets 6 which are in fork-shaped arrangement of the telescopic unit 5 are provided with connecting holes, and the two connecting sheets 6 are rotationally connected together through riveting pieces 8 arranged at the two connecting holes.

The riveting piece 8 passes through the connecting holes on the two connecting pieces 6 of the corresponding telescopic unit 5 to rotatably connect the two connecting pieces 6 together (the two connecting pieces 6 can rotate relative to the riveting piece 8).

The riveting piece 8 comprises a body and a limiting part arranged separately from the body, a first limiting ring 9 is arranged at one end of the body, the other end of the body is mutually spliced with the limiting part, one end of the limiting part is spliced with the body, a second limiting ring 10 is arranged at the other end of the limiting part, and the size of the connecting hole is larger than that of the body and is smaller than that of the first limiting ring 9 and the second limiting ring 10. The two webs 6 can be connected together by means of a rivet 8.

The hinge 11 and the rivet 8 have the same structure, and include a body and a stopper separated from the body. The end of each connecting piece 6 is also provided with a connecting hole.

The sliding part of the invention is a pulley 12, and the pulley 12 is connected with the riveting part 8 on the corresponding telescopic unit 5 through a fixing part. The pulley 12 is a concave pulley, the middle part of the pulley 12 is concave, and flanges are arranged at two ends of the pulley. The fixing piece is a screw with a thread at the end, a through hole is arranged on the pulley 12 along the axial direction of the wheel shaft, and a screw hole matched with the screw is arranged at one end of each riveting piece 8 far away from the limiting piece.

The size of the through hole is larger than that of the rod part of the screw and smaller than that of the screw and the nut, when the connecting piece is installed, the riveting piece 8 is used for connecting the two connecting pieces 6 corresponding to the telescopic unit 5 together, one end with the screw hole faces towards the first cross beam 3 on the corresponding side, and the pulley 12 and the riveting piece 8 are fixedly connected together through the screw. The pulley 12 is then clamped at the rail 7.

Two ends of each shutter cover plate 2 are connected with the corresponding telescopic bracket 4 through a protection connecting structure. The protection connecting structure comprises a plurality of cover plate sealing plates 13, wherein the cover plate sealing plates 13 correspond to the shutter cover plates 2 one by one, and each cover plate sealing plate 13 is arranged between the shutter cover plate 2 and the corresponding telescopic unit 5, is respectively connected with the cover plate and the telescopic unit 5, and connects the shutter cover plate 2 and the corresponding telescopic unit 5 together.

The louver boards 2 include a cover board body and fastening portions arranged at two ends of the cover board body, namely a first fastening portion 14 and a second fastening portion 15, the first fastening portion 14 and the second fastening portion 15 mounted on two adjacent louver boards 2 on the ceiling board mounting frame 20 can be fastened together, and the width of the first fastening portion 14 and the width of the second fastening portion 15 are the same as the width of the cover board body. The first buckle part 14 and the second buckle part 15 are integrally arranged with the cover plate body.

The cross-sections of the first buckling part 14 and the second buckling part 15 are arc-shaped, and the radian size of the first buckling part 14 is larger than that of the second buckling part 15.

The arrangement is to ensure that when the canopy 1 is in a closed cover state, the first buckling part 14 can be buckled on the second buckling part 15 of the adjacent louver boards 2, and the adjacent louver boards 2 can be buckled together to form the closed canopy 1, so that the effect of shielding wind and rain is achieved.

The first buckling part 14 and the second buckling part 15 of the invention both comprise an inclined surface 16 and a curved surface 17, and the inclination angle between the inclined surface 16 and the cover plate body is 20-80 degrees. Preferably, the inclination between the ramp 16 and the cover body is 40 °. The inclined surface 16 and the curved surface 17 of the first buckle part 14 are integrally arranged, the lower part of the inclined surface 16 is butted with the cover plate body, and the upper part of the inclined surface 16 is butted with the curved surface 17.

The second buckle part 15 has the same shape as the first buckle part 14, except that the size of the first buckle part 14 is larger than that of the second mouth part, so that the two parts can be buckled with each other. The cover plate body is provided with a reinforcing structure, the reinforcing structure comprises a reinforcing plate 18, one end of the reinforcing plate 18 is connected with the first buckling part 14, and the other end of the reinforcing plate 18 is connected with the cover plate body.

The reinforcing plate 18 is connected at one end to the inclined surface 16 of the first buckle part 14 and at the other end to the cover body by a support plate inclined towards the first buckle part 14. The width of the reinforcing plate 18 and the support plate is the same as the width of the cover body.

When the louver boards 2 are arranged on the roof mounting frame 20, the curved surfaces 17 of the first and second hook portions 14 and 15 are curved in the same direction. Preferably, the reinforcing plate 18 is parallel to the cover body and the support plate is parallel to the angled surface 16 of the first button 14. A drainage channel 19 is formed between the stay and the second buckle part 15.

Two opposite corners of the cover plate closing plate 13 are connected with the end of each louver cover plate 2, and the position of the cover plate closing plate 13 near the middle is connected with the corresponding telescopic unit 5.

The telescopic bracket 4 of the invention is connected together by a plurality of X-shaped telescopic units 5 in a cross way.

When the blind window is installed, the cover plate sealing covers are buckled at two ends of the corresponding blind window cover plate 2, and the blind window cover plate 2 and the cover plate sealing covers are locked through the locking pieces;

the two connecting pieces 6 are crossed, riveting pieces 8 are used for riveting the middle cross point to form a telescopic unit 5, and the ends of two adjacent telescopic units 5 are overlapped, aligned and connected together through a hinge piece 11 to form a telescopic support 4;

each pulley 12 is arranged on the riveting piece 8 of each telescopic unit 5 through a fixing piece (screw), the pulley 12 of the telescopic support 4 is placed in the corresponding track 7 of the first cross beam 3, and the pulley 12 is clamped at the track 7;

the telescopic units 5 on each telescopic support 4 are then connected with the respective cover flap on the corresponding side by means of locking elements.

Through the above steps, the blind panels 2 are connected to the ceiling mounting frame 20 through the telescopic brackets 4.

One end of one of the telescopic supports 4 is a driving end, and when the driving end of the telescopic support 4 is given with certain power, the telescopic support 4 is telescopic, and the louver cover plates 2 are linked to achieve the buckling and opening states of the louver cover plates 2.

The present invention can also arrange a plurality of cross beams 22 between the canopy installation frames 20, and then arrange the canopy 1 and the canopy opening and closing mechanism between the adjacent first cross beam 3 and the cross beam 22 or between the adjacent two cross beams 22, so as to realize the expansion of the area of the retractable venetian blind. As shown in fig. 2-4.

FIG. 2 is a schematic view of the fully opened canopy of the present invention; FIG. 3 is a schematic view of the canopy 1 of the present invention in a half-open state; fig. 4 is a schematic view of the fully closed state of the canopy 1 of the present invention.

At present, the transmission part can only be satisfied in the market, the louver cover plate 2 is driven to rotate to open and close, the effect is single, and the lighting is not ideal. The invention has larger lighting area and is more convenient to process, install, maintain and the like.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.