Contracting structure for sunshade

Abstract

The invention discloses a contraction structure for an awning. The contraction structure comprises a contraction assembly, an expansion assembly, awning cloth, a mounting base and a vertical sliding rail. The invention belongs to the technical field of sunshade structures, and particularly relates to a contraction structure for a sunshade. In order to solve the problem that it is difficult to reduce rainwater splashing on the premise that the shielding range of an existing telescopic sunshade is expanded, the expansion assembly is provided, rainwater can wash away electrorheological fluid originally existing in a telescopic expansion cylinder, the electrorheological fluid flows out of a second non-woven fabric layer on a bottom liquid outlet, and the rainwater can be prevented from splashing out of the second non-woven fabric layer; the first water-absorbent resin particles can absorb water and expand, the size of the telescopic expansion cylinder is expanded, the sun-shading and rain-shielding area is increased, rainwater flowing out of the two sides of the awning cloth is absorbed by means of the first water-absorbent resin particles, a large amount of rainwater cannot be splashed to the ground, and due to the property that the water is absorbed by the second water-absorbent resin particles, the water-absorbent resin particles can absorb water and expand, and the rain-shielding effect is improved. The defect that rainwater is excessively scattered on the outer edge of the awning cloth is overcome, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sunshade structures, and specifically refers to a retractable structure for a sunshade. Background Art

[0002] Outdoors, retractable sunshades are used to block sunlight and prevent skin damage. There are mainly two types of retractable sunshades: one is a light-shielding board, and the other is a sunshade umbrella. The sunshade umbrella is used to block direct sunlight; the light-shielding board is mainly used to block ultraviolet rays.

[0003] The retractable structure adopted by the sunshade is usually a scissor-type folding and telescopic structure. Although this structure meets the usage requirements, its functions are too single, and the longitudinal shielding range cannot be changed. On rainy days, rainwater falls from both sides of the sunshade, and the falling rainwater is easy to splash on clothes, causing inconvenience and also being unfavorable for the user to move under the sunshade. Therefore, a retractable structure for a sunshade needs to be proposed. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a retractable structure for a sunshade, effectively solving the problems that the existing retractable sunshade is difficult to reduce rainwater splashing and has too single functions on the premise of expanding the shielding range.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a retractable structure for a sunshade, including a retractable component, an expansion component, a sunshade canvas, a mounting seat, and a vertical slide rail. The mounting seat is arranged on the wall surface, the vertical slide rail is arranged on the mounting seat, the retractable component is arranged on the vertical slide rail, there are two groups of retractable components, mounting seats, and vertical slide rails, the sunshade canvas is arranged between the retractable components, and the expansion component is arranged on the sunshade canvas.

[0006] Preferably, the expansion component includes a particle container, a first water-absorbing resin particle, a particle opening, a parallel plate capacitor, a top water inlet, a bottom liquid outlet, a telescopic expansion cylinder, a rotary plugging cover, a second water-absorbing resin particle, a propulsion opening, an internal sliding block, a sliding cavity, a swing link, an eccentric wheel, and a propulsion housing. One end of the telescopic expansion cylinder is fixedly connected to both sides of the sunshade cloth. The particle container is communicatively arranged on the telescopic expansion cylinder. The first water-absorbing resin particle is arranged in the particle container. The particle opening is arranged at the junction of the particle container and the telescopic expansion cylinder. The parallel plate capacitors are arranged pairwise and oppositely on the inner wall of the telescopic expansion cylinder. The top water inlet is opened above the telescopic expansion cylinder. The bottom liquid outlet is opened below the telescopic expansion cylinder. The telescopic expansion cylinder is filled with an electrorheological fluid. The propulsion housing is arranged on the sunshade cloth. The sliding cavity is arranged in the propulsion housing. The internal sliding block is fitted and slidably arranged in the sliding cavity. The propulsion opening is arranged at the top of the propulsion housing. A first non-woven fabric layer is arranged on the propulsion opening. The swing link is hinged to the bottom of the internal sliding block. The eccentric wheel is rotatably arranged on the propulsion housing. The bottom of the swing link is eccentrically connected to the eccentric wheel. The second water-absorbing resin particle is arranged in the gap between the internal sliding block and the propulsion housing. The rotary plugging cover is eccentrically arranged on the shaft of the eccentric wheel.

[0007] Furthermore, the contraction component includes a vertical sliding frame, a main support rotating rod, an upper rotating rod, an upper auxiliary link, an upper parallel rod, a lower parallel rod, and a front-end rotating rod. The main support rotating rod is hinged to the mounting seat. The vertical sliding frame is slidably arranged on the vertical slide rail. One end of the upper rotating rod is hinged to the vertical sliding frame. The other end of the upper rotating rod is hinged to the main support rotating rod. The upper parallel rod is hinged to the main support rotating rod. The lower parallel rod is hinged to the main support rotating rod. The front-end rotating rod is hinged to the lower parallel rod through the bottom. The front-end rotating rod is hinged to the upper parallel rod. The upper auxiliary link is hinged between the upper rotating rod and the upper parallel rod.

[0008] Preferably, a control button is arranged on the mounting seat. The control button is a normally closed button. The control button is electrically connected to the parallel plate capacitor. In the initial state, the parallel plate capacitor continuously discharges, making the electrorheological fluid maintain a solid state. When it rains, the control button is pressed, the internal circuit is disconnected, the parallel plate capacitor no longer discharges, and the electrorheological fluid switches to a liquid state.

[0009] Wherein, the right end of the telescopic expansion cylinder is set to an open state. The rotary plugging cover is rotatably plugged at the open end of the right end of the telescopic expansion cylinder.

[0010] Preferably, second non-woven fabric layers are arranged on the top water inlet and the bottom liquid outlet.

[0011] Furthermore, the sunshade cloth is connected to the main support rotating rod, the upper parallel rod, and the front-end rotating rod.

[0012] Furthermore, the telescopic expansion cylinder is made of silicone material.

[0013] Among them, the rotary plugging cover matches the shape of the right - hand opening of the telescopic expansion cylinder.

[0014] The beneficial effects achieved by the present invention with the above - mentioned structure are as follows: This solution provides a retractable structure for a sunshade, effectively solving the problems that the existing retractable sunshade is difficult to reduce rain splashing while expanding the shading range and has too single functions. This method brings the following advantages: (1) To solve the problem that the existing retractable sunshade is difficult to reduce rain splashing while expanding the shading range, the present invention proposes an expansion component. After the sunshade cloth is opened through the retraction component, it can be used for shading. In the initial state, the water - absorbing resin particles I in the particle container cannot enter the telescopic expansion cylinder. When it rains, press the control button, the internal circuit is disconnected, the parallel - plate capacitor no longer discharges, and the electrorheological fluid switches to the liquid state. Then, the water - absorbing resin particles I can enter the telescopic expansion cylinder along the particle through - hole from the particle container. At the same time, rainwater enters the telescopic expansion cylinder through the non - woven fabric layer II on the top water inlet. The rainwater can not only wash away the original electrorheological fluid in the telescopic expansion cylinder, making the electrorheological fluid flow out through the non - woven fabric layer II on the bottom liquid outlet, but also make the water - absorbing resin particles I absorb water and expand, causing the volume of the telescopic expansion cylinder to expand. This not only increases the shading and rain - blocking areas, but also absorbs the rainwater flowing to both sides of the sunshade cloth by means of the water - absorbing resin particles I, preventing a large amount of rainwater from splashing onto the ground and improving the user experience. (2) Rainwater can also enter the non - woven fabric layer I on the propulsion through - hole and combine with the water - absorbing resin particles II, causing the rotary plugging cover to no longer block the right - hand opening of the telescopic expansion cylinder. Then, a number of continuously water - absorbing and expanding water - absorbing resin particles I can roll down from the right side of the inclined telescopic expansion cylinder. By utilizing the property that water is absorbed by the water - absorbing resin particles II, this solution improves the defect that too much rainwater spills over the outer edge of the sunshade cloth and enhances the user experience. (3) By controlling the vertical sliding frame to slide downward on the vertical slide rail through an external power source, the upper rotating rod drives the main support rotating rod to swing. The swing of the upper auxiliary connecting rod drives the upper parallel rod and the lower parallel rod to extend outward, and the front - end rotating rod swings outward, thereby driving the sunshade cloth to extend and completing the unfolding of the sunshade cloth, enabling a quick shading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural view of a retractable structure for a sunshade provided by the present invention; Figure 2 It is a side view of a retractable structure for a sunshade provided by the present invention; Figure 3 It is a schematic structural view of the expansion component provided by the present invention; Figure 4 Cross-sectional view of the expansion component provided by the present invention; Figure 5 Schematic diagram of the internal structure of the propulsion housing provided by the present invention; Figure 6 Schematic diagram of the structure of the contraction component provided by the present invention; Figure 7 is Figure 4 Partial enlarged view of part A of Figure 8 Cross-sectional view of the propulsion housing provided by the present invention.

[0016] Among them, 1. Contraction component, 2. Expansion component, 3. Sunshade cloth, 4. Mounting seat, 5. Vertical slide rail, 6. Particle container, 7. First water-absorbing resin particle, 8. Particle through hole, 9. Parallel plate capacitor, 10. Top water inlet, 11. Bottom liquid outlet, 12. Telescopic expansion cylinder, 13. Rotating plug cover, 14. Second water-absorbing resin particle, 15. Propulsion through hole, 16. Internal sliding block, 17. Sliding cavity, 18. Swing connecting rod, 19. Eccentric wheel, 20. Propulsion housing, 21. Electrorheological fluid, 22. First non-woven fabric layer, 23. Vertical sliding frame, 24. Main support rotating rod, 25. Upper rotating rod, 26. Upper auxiliary connecting rod, 27. Upper parallel rod, 28. Lower parallel rod, 29. Front-end rotating rod, 30. Control button, 31. Second non-woven fabric layer.

[0017] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0020] As Figures 1 - 2As shown in the figure, the present invention provides a retractable structure for a sunshade, including a retraction assembly 1, an expansion assembly 2, a sunshade cloth 3, a mounting base 4, and a vertical slide rail 5. The mounting base 4 is provided in two groups on the wall surface, the vertical slide rail 5 is provided in two groups on the mounting base 4, the retraction assembly 1 is provided on the vertical slide rail 5, the sunshade cloth 3 is provided between the retraction assemblies 1, and the expansion assembly 2 is provided on the sunshade cloth 3 and can move synchronously according to the expansion and contraction of the sunshade cloth 3.

[0021] As Figures 2 - 5 and Figures 7 - 8 shown, the expansion assembly 2 not only increases the area of sunshading and rain shielding, but also can prevent rainwater from splashing onto the ground in large amounts, improving the user experience. The expansion assembly 2 includes a particle container 6, a first water-absorbing resin particle 7, a particle through-hole 8, a parallel plate capacitor 9, a top water inlet 10, a bottom liquid outlet 11, a telescopic expansion cylinder 12, a rotary sealing cover 13, a second water-absorbing resin particle 14, a propulsion through-hole 15, an internal sliding block 16, a sliding cavity 17, a swing link 18, an eccentric wheel 19, and a propulsion housing 20. One end of the telescopic expansion cylinder 12 is fixedly connected to both sides of the sunshade cloth 3. The particle container 6 is communicatively provided on the telescopic expansion cylinder 12. The first water-absorbing resin particle 7 is provided in the particle container 6. The particle through-hole 8 is provided at the junction of the particle container 6 and the telescopic expansion cylinder 12. The parallel plate capacitors 9 are provided in pairs on the inner wall of the telescopic expansion cylinder 12. The top water inlet 10 is opened above the telescopic expansion cylinder 12. The bottom liquid outlet 11 is opened below the telescopic expansion cylinder 12. The telescopic expansion cylinder 12 is filled with an electrorheological fluid 21. The propulsion housing 20 is provided on the sunshade cloth 3. The sliding cavity 17 is provided in the propulsion housing 20. The internal sliding block 16 is fitted and slidably provided in the sliding cavity 17. The propulsion through-hole 15 is provided at the top of the propulsion housing 20. A non-woven fabric layer 22 is provided on the propulsion through-hole 15. The swing link 18 is hinged to the bottom of the internal sliding block 16. The eccentric wheel 19 is rotatably provided on the propulsion housing 20. The bottom of the swing link 18 is eccentrically connected to the eccentric wheel 19. The second water-absorbing resin particle 14 is provided in the gap between the internal sliding block 16 and the propulsion housing 20. The rotary sealing cover 13 is eccentrically provided on the shaft of the eccentric wheel 19.

[0022] As Figure 2 and Figure 6As shown, the contraction assembly 1 includes a vertical sliding frame 23, a main support rotating rod 24, an upper rotating rod 25, an upper auxiliary connecting rod 26, an upper parallel rod 27, a lower parallel rod 28, and a front-end rotating rod 29. The main support rotating rod 24 is hinged to the mounting seat 4. The vertical sliding frame 23 is slidably arranged on the vertical sliding rail 5. One end of the upper rotating rod 25 is hinged to the vertical sliding frame 23, and the other end of the upper rotating rod 25 is hinged to the main support rotating rod 24. The upper parallel rod 27 is hinged to the main support rotating rod 24. The lower parallel rod 28 is hinged to the main support rotating rod 24. The front-end rotating rod 29 is hinged to the lower parallel rod 28 through the bottom and is hinged to the upper parallel rod 27. The upper auxiliary connecting rod 26 is hinged between the upper rotating rod 25 and the upper parallel rod 27. The sunshade cloth 3 is connected to the main support rotating rod 24, the upper parallel rod 27, and the front-end rotating rod 29.

[0023] As Figure 1 and Figure 7 shown, a control button 30 is provided on the mounting seat 4. The control button 30 is a normally closed button and is electrically connected to the parallel plate capacitor 9.

[0024] As Figure 4 and Figure 7 shown, the right end of the telescopic expansion cylinder 12 is set to an open state. The rotary plugging cover 13 is rotatably plugged at the right-end opening of the telescopic expansion cylinder 12. Non-woven fabric layer two 31 is provided on the top water inlet 10 and the bottom liquid outlet 11. The telescopic expansion cylinder 12 is made of silica gel material, and the rotary plugging cover 13 matches the shape of the right-end opening of the telescopic expansion cylinder 12.

[0025] During specific use, the vertical sliding frame 23 is controlled by an external power source to slide downward on the vertical sliding rail 5, so that the upper rotating rod 25 drives the main support rotating rod 24 to swing. The upper auxiliary connecting rod 26 swings to drive the upper parallel rod 27 and the lower parallel rod 28 to extend outward, and the front-end rotating rod 29 swings outward, thereby driving the sunshade cloth 3 to extend, completing the unfolding of the sunshade cloth 3, and enabling fast sunshade operation; Since the control button 30 is a normally closed button, the parallel plate capacitor 9 discharges continuously in the initial state, causing the electrorheological fluid 21 to remain in a solid state. In this state, the water-absorbing resin particles 7 in the particle container 6 cannot enter the telescopic expansion cylinder 12. When it rains, the control button 30 is pressed, the internal circuit is disconnected, and the parallel plate capacitor 9 stops discharging. The electrorheological fluid 21 switches to a liquid state. Then, the water-absorbing resin particles 7 can enter the telescopic expansion cylinder 12 from the particle container 6 along the particle through-hole 8. At the same time, rainwater enters the telescopic expansion cylinder 12 through the non-woven fabric layer 31 on the top water inlet 10. The rainwater can not only wash away the original electrorheological fluid 21 in the telescopic expansion cylinder 12, making the electrorheological fluid 21 flow out from the non-woven fabric layer 31 on the bottom liquid outlet 11, but also cause the water-absorbing resin particles 7 to absorb water and expand, swelling the volume of the telescopic expansion cylinder 12. This not only increases the area of sunshade and rain protection, but also absorbs the rainwater flowing out to both sides of the sunshade awning 3 with the help of the water-absorbing resin particles 7, preventing a large amount of rainwater from splashing onto the ground and enhancing the user experience. The rainwater can also enter the non-woven fabric layer 21 on the propulsion through-hole 15 and combine with the water-absorbing resin particles 14, causing the water-absorbing resin particles 14 to absorb water and expand. Then, the internal sliding block 16 is pushed to slide downward, causing the swing link 18 to drive the eccentric wheel 19 to rotate, and then driving the rotary sealing cover 13 to rotate eccentrically, so that the rotary sealing cover 13 no longer blocks the right end opening of the telescopic expansion cylinder 12. The continuously water-absorbing and expanding water-absorbing resin particles 7 can roll down from the right side of the inclined telescopic expansion cylinder 12 and can be contained in an additional container. By utilizing the property that water is absorbed by the water-absorbing resin particles 14, the defect of excessive rainwater spilling at the outer edge of the sunshade awning 3 is improved, enhancing the user experience.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the invention.

[0028] The above description of the present invention and its implementation manners is not restrictive. What is shown in the accompanying drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural manners and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A retractable structure for a sunshade, comprising a sunshade cloth (3) and a mounting base (4), the mounting base (4) being provided on a wall surface, characterized in that: It further includes a contraction component (1), an expansion component (2) and a vertical slide rail (5). The vertical slide rail (5) is arranged on the mounting base (4). The contraction component (1) is arranged on the vertical slide rail (5). There are two sets of the contraction component (1), the mounting base (4) and the vertical slide rail (5). The sunshade cloth (3) is arranged between the contraction components (1). The expansion component (2) is arranged on the sunshade cloth (3).

2. The retractable structure for a sunshade according to claim 1, characterized in that: The expansion component (2) includes a particle container (6), a first water-absorbing resin particle (7), a particle through-hole (8), a parallel plate capacitor (9), a top water inlet (10), a bottom liquid outlet (11), a telescopic expansion cylinder (12), a rotary plugging cover (13), a second water-absorbing resin particle (14), a propulsion through-hole (15), an internal sliding block (16), a sliding cavity (17), a swing link (18), an eccentric wheel (19) and a propulsion housing (20). One end of the telescopic expansion cylinder (12) is fixedly connected to both sides of the sunshade cloth (3). The particle container (6) is communicatively arranged on the telescopic expansion cylinder (12). The first water-absorbing resin particle (7) is arranged in the particle container (6). The particle through-hole (8) is arranged at the junction of the particle container (6) and the telescopic expansion cylinder (12). The parallel plate capacitors (9) are arranged in pairs on the inner wall of the telescopic expansion cylinder (12). The top water inlet (10) is opened above the telescopic expansion cylinder (12). The bottom liquid outlet (11) is opened below the telescopic expansion cylinder (12). The telescopic expansion cylinder (12) is filled with an electrorheological fluid (21). The propulsion housing (20) is arranged on the sunshade cloth (3). The sliding cavity (17) is arranged in the propulsion housing (20). The internal sliding block (16) is fitted and slidably arranged in the sliding cavity (17). The propulsion through-hole (15) is arranged at the top of the propulsion housing (20). A non-woven fabric layer one (22) is arranged on the propulsion through-hole (15). The swing link (18) is hinged to the bottom of the internal sliding block (16). The eccentric wheel (19) is rotatably arranged on the propulsion housing (20). The bottom of the swing link (18) is eccentrically connected to the eccentric wheel (19). The second water-absorbing resin particle (14) is arranged in the gap between the internal sliding block (16) and the propulsion housing (20). The rotary plugging cover (13) is eccentrically arranged on the shaft of the eccentric wheel (19).

3. The retractable structure for a sunshade according to claim 2, characterized in that: The contraction component (1) includes a vertical sliding frame (23), a main support rotating rod (24), an upper rotating rod (25), an upper auxiliary connecting rod (26), an upper parallel rod (27), a lower parallel rod (28), and a front-end rotating rod (29). The main support rotating rod (24) is hinged to the mounting base (4). The vertical sliding frame (23) is slidably disposed on the vertical slide rail (5). One end of the upper rotating rod (25) is hinged to the vertical sliding frame (23), and the other end of the upper rotating rod (25) is hinged to the main support rotating rod (24). The upper parallel rod (27) is hinged to the main support rotating rod (24), the lower parallel rod (28) is hinged to the main support rotating rod (24), the front-end rotating rod (29) is hinged to the lower parallel rod (28) through the bottom, the front-end rotating rod (29) is hinged to the upper parallel rod (27), and the upper auxiliary connecting rod (26) is hinged between the upper rotating rod (25) and the upper parallel rod (27).

4. A retractable structure for a sunshade according to claim 3, characterized in that: A control button (30) is provided on the mounting base (4). The control button (30) is a normally closed button, and is electrically connected between the control button (30) and the parallel plate capacitor (9).

5. The retractable structure for a sunshade according to claim 4, characterized in that: The right end of the telescopic expansion cylinder (12) is set in an open state, and the rotary plugging cover (13) is rotatably plugged at the right end opening of the telescopic expansion cylinder (12).

6. A retractable structure for a sunshade according to claim 5, characterized in that: A non-woven fabric layer two (31) is provided on the top water inlet (10) and the bottom liquid outlet (11).

7. A retractable structure for a sunshade according to claim 6, characterized in that: The sunshade cloth (3) is connected to the main support rotating rod (24), the upper parallel rod (27), and the front-end rotating rod (29).

8. A retractable structure for a sunshade according to claim 7, characterized in that: The telescopic expansion cylinder (12) is made of silica gel material.

9. The retractable structure for a sunshade according to claim 8, characterized in that: The rotary plugging cover (13) matches the shape of the right end opening of the telescopic expansion cylinder (12).

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