CN210714061U

CN210714061U - Opening and closing device of sun-shading mechanism

Info

Publication number: CN210714061U
Application number: CN201921273427.3U
Authority: CN
Inventors: 林燕良
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-09
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a folding and unfolding device of a sunshade mechanism, which comprises a fixed seat, an annular track, a group of sunshade groups and a folding and unfolding mechanism for controlling the folding and unfolding of the sunshade groups; the unwinding mechanism is provided with an unwinding wire, a guide wheel set, a rotating shaft, a driving mechanism for driving the rotating shaft to rotate to wind and unwind the unwinding wire, and a first fixing rod and a second fixing rod which are respectively positioned at two sides of the two supporting rods; when the driving mechanism drives the rotating shaft to rotate, one end of the winding and unwinding wire is wound, the other end of the winding and unwinding wire is wound, the two supporting rods are pulled to move back and forth, and the two supporting rods respectively abut against the side edges of the first fixing rod and the second fixing rod and open the sun-shading cloth; or the two supporting rods are pulled to move relatively, and the two supporting rods are folded together and the sun-shading cloth is folded; with the help of the structure, the utility model discloses sunshade mechanism's the device that opens and receives the structure simpler and open and receive more fast, convenient.

Description

Opening and closing device of sun-shading mechanism

Technical Field

The utility model relates to a receive device of opening and receiving convenient sunshade mechanism.

Background

The existing sunshade mechanism comprises a sunshade, a sunshade net, a sunshade and the like, wherein the sunshade or the sunshade net is opened and closed from one side to the other side as a whole by an opening and closing structure of the sunshade or the sunshade net, the opening and closing structure is complex, the operation in the opening and closing process is complex, and the problems of unsmooth opening and closing and long opening and closing time are easy to occur; the sunshade umbrella is similar to an umbrella structure and can be directly unfolded and folded, and the sunshade umbrella is convenient to unfold and fold only when being small; if the sunshade is bigger, the folding structure is relatively complex, and the whole folding is very inconvenient.

In view of this, the present inventors have made extensive conception on the defects and inconveniences caused by the imperfect design of the opening and closing structure of the sunshade mechanism, and have developed and designed the present application by actively researching, improving and trying on the defects and inconveniences.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sunshade mechanism's receipts device, it is simpler and more quick, convenient to open and receive the structure.

In order to achieve the above purpose, the solution of the present invention is:

a folding device of a sunshade mechanism comprises a fixed seat, an annular track, a group of sunshade groups and a folding mechanism for controlling the folding and unfolding of the sunshade groups; the sunshade group is provided with two supporting rods for supporting sunshade cloth and sunshade cloth which is fan-shaped and two sides of which are respectively connected with the two supporting rods, one end of each supporting rod is pivoted on the fixed seat, and the other end of each supporting rod is connected to the annular track in a sliding manner; the unwinding mechanism is provided with an unwinding wire, a guide wheel set, a rotating shaft, a driving mechanism for driving the rotating shaft to rotate to wind and unwind the unwinding wire, and a first fixing rod and a second fixing rod which are respectively positioned at two sides of the two supporting rods; one end of the first fixing rod is pivoted on the fixing seat, and the other end of the first fixing rod is fixedly connected to the annular track; one end of the second fixing rod is pivoted on the fixing seat, and the other end of the second fixing rod is fixed on the annular track; the guide wheel set is provided with two guide wheels arranged above the first fixed rod, and the rotating shaft and the driving motor are arranged below the first fixed rod; the take-up and pay-off line surrounds the two support rods and is fixedly connected with the two support rods respectively, the middle part of the take-up and pay-off line movably penetrates through the second fixed rod, and two end parts of the take-up and pay-off line are guided by the two guide wheels to be wound on the rotating shaft; when the driving mechanism drives the rotating shaft to rotate, one end of the winding and unwinding wire is wound, the other end of the winding and unwinding wire is wound, the two supporting rods are pulled to move back and forth, and the two supporting rods respectively abut against the side edges of the first fixing rod and the second fixing rod and open the sun-shading cloth; or the two supporting rods are pulled to move relatively, and the two supporting rods are folded together and the sun-shading cloth is folded.

At least one supporting rod enclosed in the coiling and uncoiling line is arranged between the two supporting rods; one end of the supporting rod is pivoted on the fixing seat, the other end of the supporting rod is connected to the annular rail in a sliding mode, and the supporting rod is connected with the sun-shading cloth.

Two support rods are arranged between the two support rods and are respectively connected with the two trisection lines of the sunshade cloth.

The supporting rod and the supporting rod are respectively provided with a pulley seat at one end in sliding connection with the annular rail, the pulley seat is provided with a base fixed with the supporting rod or the supporting rod, and a pulley and a roller which are arranged on the base, the pulley rolls and is supported above the annular rail, and the roller rolls and is supported below the annular rail.

The base is provided with an inclined plate fixedly connected with a supporting rod or a supporting rod, a first vertical plate and a second vertical plate extend downwards from the bottom surface of the inclined plate, the pulley is rotatably pivoted between the first vertical plate and the second vertical plate through a shaft, and the roller is rotatably pivoted on the second vertical plate through a shaft; the first vertical plate is located on the outer side of the track, the second vertical plate is located on the inner side of the track, and an opening for clamping the annular track is formed between the pulley and the roller and faces one side of the first vertical plate.

The pulley is provided with a tapered part which is tapered from two ends to the middle, and the track is provided with a convex ring for the tapered part to clamp and slide; the number of the pulleys is two and the pulleys are arranged side by side.

The fixing seat is provided with a bottom plate, a plurality of nail columns distributed on the bottom plate and a cover plate covering the upper ends of the nail columns, and the supporting rod are respectively pivoted with the fixing seat, and one end of the supporting rod are provided with pivoting holes sleeved on the nail columns; the pin joint hole is a strip-shaped hole which extends along the length direction of the supporting rod or the supporting rod.

The other side of the first fixed rod is also provided with a group of sunshade groups, and the opening and closing mechanism is also provided with a wire for opening and closing the sunshade groups, a guide wheel group and a second fixed rod.

And the second fixed rod is provided with a through hole for the wire to pass through.

A stepped support is arranged above the first fixed rod, and two guide wheels of the guide wheel set are arranged on two adjacent steps of the support; a trapezoid support is arranged below the first fixing rod, the trapezoid support is provided with a right-angle edge which is opposite to the first fixing rod and is parallel to the horizontal plane, and the rotating shaft and the driving mechanism are arranged on the right-angle edge.

After the structure is adopted, the utility model discloses sunshade mechanism's the theory of operation of opening and receiving the device is: when the driving mechanism drives the rotating shaft to rotate in one direction to wind and unwind the winding and unwinding line and open the sunshade group, one end of the winding and unwinding line fixedly connected with the supporting rod close to the second fixed rod is in a unwinding state, and one end of the winding and unwinding line fixedly connected with the supporting rod close to the first fixed rod is in a winding state, so that the supporting rod close to the second fixed rod is close to the second fixed rod and is finally abutted against the second fixed rod, the supporting rod close to the first fixed rod is close to the first fixed rod and is finally abutted against the first fixed rod, and the two supporting rods can support the sunshade cloth and shield the interval between the first fixed rod and the second fixed rod, so that the sunshade group is opened; when the driving mechanism drives the rotating shaft to rotate in the other direction to wind, unwind and fold the sunshade group, one end of the winding and unwinding wire fixedly connected with the supporting rod close to the second fixed rod is in a winding state, and one end of the winding and unwinding wire fixedly connected with the supporting rod close to the first fixed rod is in a unwinding state, so that the supporting rod close to the second fixed rod moves away from the second fixed rod, the supporting rod close to the first fixed rod moves away from the first fixed rod, the two supporting rods are close together and finally abut against each other, the two supporting rods are close together to fold the sunshade cloth, and the folding of the sunshade group is realized; the opening and closing structure of the sun-shading mechanism is simpler, and the opening and closing are quicker and more convenient.

Drawings

Fig. 1 is a schematic front view of the opening and closing device of the sunshade mechanism of the present invention;

FIG. 2 is a schematic view of the structure of the support rod and the sliding seat of the present invention;

fig. 3 is a schematic structural view of the sliding seat of the present invention;

FIG. 4 is a schematic side view of the sliding seat of the present invention;

FIG. 5 is a schematic view of the structure of each rod pivoted to the fixing base of the present invention;

FIG. 6 is a schematic front view of the fixing base pivotally connecting the rods;

FIG. 7 is a schematic top view of the fixing base pivotally connecting the rods;

FIG. 8 is a schematic structural view of the open state of the umbrella-shaped sunshade mechanism formed by multiple sunshade groups according to the present invention;

FIG. 9 is a schematic top view of the open state of the umbrella-shaped sunshade mechanism formed by the multiple sunshade groups according to the present invention;

FIG. 10 is a schematic structural view of the umbrella-shaped sunshade mechanism composed of multiple sunshade groups according to the present invention in a half-open state;

FIG. 11 is a schematic top view of the umbrella-shaped sunshade mechanism composed of multiple sunshade groups according to the present invention in a half-open state;

FIG. 12 is a schematic view of the folding state of the umbrella-shaped sunshade mechanism composed of multiple sunshade groups according to the present invention;

FIG. 13 is a schematic top view of the umbrella-shaped sunshade mechanism formed by a plurality of sunshade sets according to the present invention;

fig. 14 is a schematic structural view of the umbrella-shaped sunshade mechanism of the present invention applied to a greenhouse.

Description of the symbols

Sun-shading mechanism 2 of greenhouse body 1

Fixing seat 21 annular rail 22

Sunshade group 23 opening and closing mechanism 24

First fixing rod 231 and supporting rod 232

Sun cloth 233 take-up and pay-off line 241

Rotating shaft 243 of guide wheel set 242

Drive mechanism 244 second stationary lever 25

Guide wheel 2421 strut 234

Trapezoidal support 32 of support 31

Right angle side 321 through hole 251

Pulley seat 4 base 41

Pulley 42 and roller 43

Inclined plate 411 first vertical plate 412

Second vertical plate 413 taper 421

The convex ring 221 has an opening 414

Annular bottom plate 211 stud 212

Cover plate 213 pivoted with hole 235

Edge 214 is chamfered edge 215.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

Referring to fig. 1 to 7, the present invention discloses an opening and closing device of a sunshade mechanism 2, which comprises a fixing base 21, an annular rail 22, a set of sunshade groups 23 and an opening and closing mechanism 24 for controlling the opening and closing of the sunshade groups 23; the sunshade group 23 is provided with two support rods 232 for supporting the sunshade cloth 233 and the sunshade cloth 233 which is fan-shaped and two sides of which are respectively connected with the two support rods 232, one end of each support rod 232 is pivoted on the fixed seat 21, and the other end is connected to the annular track 22 in a sliding manner; the unwinding mechanism 24 comprises a unwinding line 241, a guiding wheel set 242, a rotating shaft 243, a driving mechanism 244 for driving the rotating shaft 243 to rotate the unwinding line 241, and a first fixing rod 231 and a second fixing rod 25 which are respectively positioned at two sides of the two supporting rods 232; one end of the first fixing rod 231 is pivoted on the fixing seat 21, and the other end is fixedly connected on the annular track 22; one end of the second fixing rod 25 is pivoted on the fixing seat 21, and the other end is fixed on the annular track 22; the guide wheel set 242 has two guide wheels 2421 disposed above the first fixing bar 231, and the rotating shaft 243 and the driving motor 244 are disposed below the first fixing bar 231; the take-up and pay-off line 241 surrounds the two support rods 232 and is fixedly connected with the two support rods, the middle part of the take-up and pay-off line 241 movably penetrates through the second fixed rod 25, and two end parts of the take-up and pay-off line 241 are guided by the two guide wheels 2421 and wound on the rotating shaft 243; when the driving mechanism 244 drives the rotating shaft 243 to rotate, one end of the wire take-up and pay-off line 241 is used for paying off and the other end is used for taking up wires, the two supporting rods 232 are pulled to move back and forth, the two supporting rods 232 are respectively abutted against the side edges of the first fixing rod 231 and the second fixing rod 25, and the sun-shading cloth 233 is opened; or the two supporting rods 232 are pulled to move relatively, the two supporting rods 232 are folded together and the sun-shading cloth 233 is folded.

The utility model discloses sunshade mechanism's the theory of operation of opening and receiving the device is: when the driving mechanism 244 drives the rotating shaft 243 to rotate in one direction to wind and unwind the winding and unwinding line 241 to open the sunshade group 23, one end of the winding and unwinding line 241 fixedly connected with the supporting rod 232 close to the second fixing rod 25 is in a unwinding state, and one end of the winding and unwinding line 242 fixedly connected with the supporting rod 232 close to the first fixing rod 231 is in a winding state, so that the supporting rod 232 close to the second fixing rod 25 is close to the second fixing rod 25 and finally abutted against the second fixing rod 25, the supporting rod 232 close to the first fixing rod 231 is close to the first fixing rod 231 and finally abutted against the first fixing rod 231, and the two supporting rods 232 can support the sunshade cloth 233 and shade the interval between the first fixing rod 231 and the second fixing rod 25, so that the sunshade group 23 is opened; when the driving mechanism 244 drives the rotating shaft 243 to rotate in the other direction to wind the winding and unwinding line 241 to fold the sunshade group 23, one end of the winding and unwinding line 241 fixedly connected with the supporting rod 232 close to the second fixing rod 25 is in a winding state, and one end of the winding and unwinding line 241 fixedly connected with the supporting rod 232 close to the first fixing rod 231 is in a unwinding state, so that the supporting rod 232 close to the second fixing rod 25 moves away from the second fixing rod 25, the supporting rod 232 close to the first fixing rod 231 moves away from the first fixing rod 232, the two supporting rods 232 are close and finally abut against each other, the two supporting rods 232 are close to each other to fold the sunshade cloth 233, and the folding of the sunshade group 23 is realized; the utility model discloses a sunshade mechanism's opening and receiving device's opening and receiving structure is simpler and open and receive more fast, convenient.

At least one supporting rod 234 enclosed in the coiling and uncoiling line 241 is arranged between the two supporting rods 232; one end of the supporting rod 234 is pivoted on the fixing seat 21, the other end is connected on the annular track 22 in a sliding manner, and the supporting rod 234 is connected with the sun-shading cloth 233; the supporting rod 234 is additionally arranged between the two supporting rods 232, so that the sun-shading cloth 233 can be supported more smoothly, the sun-shading effect is better, and the sun-shading cloth 233 can be folded in half and folded by the two supporting rods 232 and the supporting rod 234 when being folded, so that the folding is convenient and neat; moreover, the supporting rod 234 is arranged in the middle of the sun-shading cloth 233 for supporting, so that the problem that a large amount of rainwater is accumulated on the sun-shading cloth 233 when raining and cannot be discharged out of the sun-shading cloth 233 in time to cause the damage of the sun-shading cloth 233 due to heavy load can be avoided.

Two support rods 234 are arranged between the two support rods 232 of the utility model, and the two support rods 234 are respectively connected with the two trisection lines of the sunshade cloth 233; the two supporting rods 232 and the two supporting rods 234 can divide the sun-shading cloth 233 into trisection supports to be more flat; when folded, the sun-shading cloth 233 can be folded along the trisection line, so that the folding is more convenient and neat.

Referring to fig. 2 to 4, the supporting rod 232 and the supporting rod 234 of the present invention are respectively provided with a pulley seat 4 at one end slidably connected to the annular rail 22, the pulley seat 4 is provided with a base 41 fixed to the supporting rod 232 or the supporting rod 234, and a pulley 42 and a roller 43 disposed on the base 41, the pulley 42 is rolled and supported above the annular rail 22, and the roller 43 is rolled and supported below the annular rail 22; the pulley seat 4 can support the support rod 232 or the support rod 234 to slide on the annular rail 22, and the pulley 42 and the roller 43 can clamp the annular rail 22 to prevent the pulley seat 4 from falling off the annular rail 22.

The base 41 of the present invention has a tilting plate 411 fixedly connected to the supporting rod 232 or the supporting rod 234, a first vertical plate 412 and a second vertical plate 413 extending downward from the bottom surface of the tilting plate 411, the pulley 42 is pivotally connected between the first vertical plate 412 and the second vertical plate 413 through a shaft, and the roller 43 is pivotally connected to the second vertical plate 413 through a shaft; the supporting rod 232 and the supporting rod 234 are obliquely arranged on the fixed seat 21 and the annular rail 22, and the base 41 is connected with the supporting rod 232 or the supporting rod 234 through the inclined plate 411, so that one end of the supporting rod 232 and one end of the supporting rod 234 are stably and obliquely supported on the annular rail 22; the pulley 42 and the roller 43 are respectively pivoted on the first vertical plate 412 and the second vertical plate 413 through shafts, so that the pulley 42 and the roller 43 are pressed against the annular rail 22 to roll up and down, and the support rod 232 and the support rod 234 slide on the annular rail 22 smoothly; the first vertical plate 412 is positioned at the outer side of the annular rail 22, the second vertical plate 413 is positioned at the inner side of the annular rail 22, and an opening 414 for clamping the annular rail 22 is formed between the pulley 42 and the roller 43 and faces one side of the first vertical plate 412; the pulley block 4 is conveniently mounted on the endless track 22.

The pulley 42 of the present invention has a tapered portion 421 tapered from two ends to the middle, and the annular rail 22 has a convex ring 221 for the tapered portion 421 to be clamped and slid; the pulley 42 is firmly clamped on the annular rail 22, so that the pulley seat 4 is prevented from being separated from the annular rail 22, and the sliding is smoother.

The utility model discloses a quantity of pulley 42 is two and sets up side by side, and it is more steady to slide.

The pulley 42 and the roller 43 are arranged in parallel, and can be firmly supported on the circular rail 22, and the sliding structure is firmer.

The length of first vertical plate 412 is less than the length of second vertical plate 413.

Referring to fig. 5 and 7, the fixing base 21 of the present invention has a bottom plate 211, a plurality of studs 212 distributed on the bottom plate 211, and a cover plate 213 covering the upper ends of the studs 212, wherein the support rod 232 and the support rod 234 are respectively pivoted to the fixing base 21, and one end of the support rod 232 and one end of the support rod 234 are provided with a pivot hole 235 sleeved on the stud 212; the pivot hole 235 is an elongated hole extending along the length direction of the support rod 232 or the support rod 234; because the supporting rod 232 or the supporting rod 234 can drive the supporting rod 232 or the supporting rod 234 to rotate at the pivot joint with the fixing seat 21 when the supporting rod 232 or the supporting rod 234 is located at one end of the circular track 22 and slides on the circular track 22, the length from one end of the circular track 22 to one end of the fixing seat 21 can change during the rotation process of the supporting rod 232 or the supporting rod 234, i.e., the supporting rod 232 or the supporting rod 234 can stably and stably slide on the circular track 22, the pivot joint of the supporting rod 232 or the supporting rod 234 located at one end of the fixing seat 21 can change, and the matching structure of the pivot joint hole 235 and the nail post 212 can provide an abdicating space for the supporting rod 232 or the supporting rod 234 to slide and rotate on the circular.

In the present invention, a set of sunshade group 23 is further disposed on the other side of the first fixing rod 231, and the folding and unfolding mechanism 24 is further provided with a folding and unfolding line 241 for folding and unfolding the set of sunshade group 23, a second guiding wheel set 242 and a second fixing rod 25; the guiding wheel set 242 of the sunshade group 23 also has two guiding wheels 2421 disposed above the first fixing rod 231, the wire take-up and pay-off line 241 of the sunshade group 23 surrounds the two supporting rods 232 of the group and is respectively and fixedly connected with the two supporting rods, the middle part of the wire take-up and pay-off line 241 is movably disposed on the second fixing rod 25 of the group, and the two end parts of the wire take-up and pay-off line 241 are guided by the guiding wheel set 242 and wound on the rotating shaft 243; the two sides of the first fixing rod 231 are respectively provided with the sunshade groups 23, the two sets of winding and unwinding lines 241 are respectively wound on the same rotating shaft 243 through the two sets of guide wheel sets 242, and the same driving mechanism 244 is used for driving the rotating shaft 243 to rotate so as to wind and unwind the two sets of winding and unwinding lines 241, so that the folding and unwinding of the sunshade groups 23 on the two sides of the first fixing rod 231 can be controlled, and the two sets of folding and unwinding structures are formed, and the folding and unwinding are quicker and more convenient.

The utility model discloses a be provided with the perforation 251 that supplies receive and release line 241 to wear to establish on the second dead lever 25, can conveniently receive and release line 241 activity and wear to establish the guide effect.

A trapezoid bracket 32 is arranged below the first fixing rod 241, the trapezoid bracket 32 is provided with a right-angle side 321 opposite to the first fixing rod 241 and parallel to the horizontal plane, and the rotating shaft 243 and the driving mechanism 244 are arranged on the right-angle side 321; the wire 241 is guided by the guide wheel 2421 to be vertically above the rotating shaft 243, and the wire 241 can be vertically wound on the rotating shaft 243 for being more smoothly wound and unwound.

The bottom plate 211 of the fixing base 21 of the present invention is a rectangular ring and has four edges 214 with the nail posts 212, and the first fixing rod 231, the supporting rod 232 and the supporting rod 234 of the sunshade mechanism 2 are pivoted on the same edge 214; because the first fixing rod 231 of the sunshade mechanism 2 is fixedly connected to the circular track 22 and is in a stationary state during the opening and closing process of the sunshade group 23, the first fixing rod 231 can be fixedly connected to the fixing base 21 or movably connected to the fixing base 21.

Referring to fig. 8 to 14, the sunshade groups 23 of the present invention are provided with eight groups, and the first fixing rod 231, the supporting rod 232 and the supporting rod 234 of each two groups of sunshade groups 23 are respectively pivoted on the four edges 214 of the fixing base 21; the first fixing rod 231, the supporting rod 232 and the supporting rod 234 required for folding and unfolding each group of the sun-shading cloth 233 are pivoted on the same edge 214, so that the early assembly and the later maintenance management are facilitated.

In the present invention, a chamfered edge 215 is connected between two adjacent edges 214, and the second fixing rod 25 is fixedly connected to the chamfered edge 215; because the second fixing rod 25 is in a stationary state when the sunshade cloth 233 is folded and unfolded, the relationship between the second fixing rod 25 and the fixing seat 21 and the annular track 22 is fixed, and the second fixing rod 25 is arranged between the two adjacent groups of sunshade groups 23, that is, the folding and unfolding line 241 folded and unfolded by the two adjacent groups of sunshade groups 23 passes through the second fixing rod 25 to be guided and wound, so that the chamfered edge 215 is connected between the two adjacent edges 214 to allow the second fixing rod 25 to be independently fixed, and the folding and unfolding line 241 is convenient to penetrate through.

The fixed seat 21 of the utility model is provided with an exhaust fan; the air in the sunshade mechanism 2 can be pumped out, thereby achieving the purpose of replacing the air in the sunshade mechanism 2.

The sun-shading mechanism of the utility model can be arranged on the annular greenhouse body 1, namely, a plurality of groups of sun-shading mechanisms 2 are arranged on the inner side of the roof of the greenhouse body 1, and the plurality of groups of sun-shading mechanisms 2 can be opened to be fan-shaped and connected end to end in sequence to be umbrella-shaped to shade the whole roof of the greenhouse; the sun-shading mechanism 2 of the greenhouse is divided into a plurality of sun-shading groups 23 which are independently controlled to be opened and closed through the opening and closing mechanism 24, so that the opening and closing of the groups are quicker and more convenient, the structure is simple, the installation and the later maintenance are convenient, and the sun-shading mechanism 2 is arranged on the inner side of the greenhouse body 1, is more difficult to damage and has longer service life compared with the sun-shading mechanism 2 arranged on the outer side of the greenhouse body 1; when the sun-shading mechanism 2 needs to be opened, each opening and closing mechanism 24 controls each sun-shading group 23 to be unfolded into a fan shape, and the sun-shading groups 23 are sequentially connected end to end and are shaded in an umbrella shape on the inner side of the roof of the whole greenhouse 1, so that the sun-shading effect can be effectively achieved, and the temperature in the greenhouse 2 is reduced; when the sunshade mechanism 2 needs to be folded, each folding and unfolding mechanism 24 controls each sunshade group 23 to be folded together, and sunlight irradiates on the roof of the greenhouse and penetrates through the roof of the greenhouse to irradiate so as to provide sunlight and temperature for plants; the sunshade mechanism 2 of the utility model is divided into a plurality of sunshade groups 23, and the sunshade effect can be adjusted by opening and closing different sunshade groups 23, so as to adjust the temperature in the greenhouse, and the use is more flexible; for example, in the morning the eastern shading set 23 is opened to shade the sun, while the western shading set 23 may not be opened for ventilation; in the evening, the west facing sunshade group 23 is opened to shade the sun, while the east facing sunshade group 23 may not be opened for ventilation; can provide better growing environment for plants; and the later stage can be maintained to each sunshade group, does not need to change whole sunshade mechanism, easy maintenance and with low costs.

The above embodiments and drawings do not limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be considered as departing from the scope of the present invention.

Claims

1. A folding device of a sunshade mechanism is characterized by comprising a fixed seat, an annular track, a group of sunshade groups and a folding mechanism for controlling the folding and unfolding of the sunshade groups; the sunshade group is provided with two supporting rods for supporting sunshade cloth and sunshade cloth which is fan-shaped and two sides of which are respectively connected with the two supporting rods, one end of each supporting rod is pivoted on the fixed seat, and the other end of each supporting rod is connected to the annular track in a sliding manner; the unwinding mechanism is provided with an unwinding wire, a guide wheel set, a rotating shaft, a driving mechanism for driving the rotating shaft to rotate to wind and unwind the unwinding wire, and a first fixing rod and a second fixing rod which are respectively positioned at two sides of the two supporting rods; one end of the first fixing rod is pivoted on the fixing seat, and the other end of the first fixing rod is fixedly connected to the annular track; one end of the second fixing rod is pivoted on the fixing seat, and the other end of the second fixing rod is fixed on the annular track; the guide wheel set is provided with two guide wheels arranged above the first fixed rod, and the rotating shaft and the driving motor are arranged below the first fixed rod; the take-up and pay-off line surrounds the two support rods and is fixedly connected with the two support rods respectively, the middle part of the take-up and pay-off line movably penetrates through the second fixed rod, and two end parts of the take-up and pay-off line are guided by the two guide wheels to be wound on the rotating shaft; when the driving mechanism drives the rotating shaft to rotate, one end of the winding and unwinding wire is wound, the other end of the winding and unwinding wire is wound, the two supporting rods are pulled to move back and forth, and the two supporting rods respectively abut against the side edges of the first fixing rod and the second fixing rod and open the sun-shading cloth; or the two supporting rods are pulled to move relatively, and the two supporting rods are folded together and the sun-shading cloth is folded.

2. The opening and closing device of a sunshade mechanism according to claim 1, wherein at least one supporting rod enclosed in the line is arranged between the two supporting rods; one end of the supporting rod is pivoted on the fixing seat, the other end of the supporting rod is connected to the annular rail in a sliding mode, and the supporting rod is connected with the sun-shading cloth.

3. The folding device of a sunshade mechanism according to claim 2, wherein two support rods are disposed between said two support rods, and said two support rods are respectively connected to two trisection lines of said sunshade fabric.

4. The folding device of a sunshade mechanism according to claim 2, wherein the supporting rod and the supporting rod are slidably connected to the circular track respectively, and a pulley seat is disposed at one end of the supporting rod and the supporting rod, the pulley seat is provided with a base fixed to the supporting rod or the supporting rod, and a pulley and a roller are disposed on the base, the pulley is rolled and supported above the circular track, and the roller is rolled and supported below the circular track.

5. The folding device of a sunshade mechanism according to claim 4, wherein said base has an inclined plate fixedly connected to the supporting rod or the supporting rod, a first vertical plate and a second vertical plate extending downward from the bottom of the inclined plate, said pulley is pivotally connected between the first vertical plate and the second vertical plate by a shaft, and said roller is pivotally connected to the second vertical plate by a shaft; the first vertical plate is located on the outer side of the track, the second vertical plate is located on the inner side of the track, and an opening for clamping the annular track is formed between the pulley and the roller and faces one side of the first vertical plate.

6. The folding device of a sunshade mechanism as claimed in claim 5, wherein said pulley has a tapered portion tapered from both ends to the middle, said rail has a collar for the tapered portion to slide; the number of the pulleys is two and the pulleys are arranged side by side.

7. The folding device of a sunshade mechanism as claimed in claim 2, wherein said fixing base has a bottom plate, a plurality of studs distributed on the bottom plate, and a cover plate covering the upper ends of the studs, and the ends of the support rods and the support rods pivotally connected to the fixing base are provided with pivot holes sleeved on the studs; the pin joint hole is a strip-shaped hole which extends along the length direction of the supporting rod or the supporting rod.

8. The folding device of a sunshade mechanism as claimed in claim 1, wherein a set of sunshade groups is further disposed on the other side of the first fixing rod, and the folding mechanism further comprises a folding and unfolding line for folding and unfolding the set of sunshade groups, a guiding wheel set and a second fixing rod.

9. The folding device of a sunshade mechanism as claimed in claim 1, wherein said second fixing rod is provided with a through hole for the winding and unwinding wire to pass through.

10. The folding device of a sunshade mechanism according to claim 1, wherein a step-shaped support is arranged above the first fixing rod, and two guide wheels of the guide wheel set are arranged on two adjacent steps of the support; a trapezoid support is arranged below the first fixing rod, the trapezoid support is provided with a right-angle edge which is opposite to the first fixing rod and is parallel to the horizontal plane, and the rotating shaft and the driving mechanism are arranged on the right-angle edge.