Sunshade curtain structure

Abstract

The embodiment of the utility model relates to the technical field of sunshade, and discloses a sunshade curtain structure which comprises a reel and a traction rope wound around the end of the reel. A containing groove is formed in the pulling plate in the length direction, and a sliding block is arranged at the end of the containing groove. Connecting blocks are arranged at the ends of the spring assemblies; wherein the pulling rope is connected with the connecting block, under the pulling force effect of the pulling rope, the connecting block moves towards the sliding block, the spring assembly deforms, the pulling plate is driven to move in the preset direction, and when the pulling plate moves to the preset position, the connecting block and the sliding block are spaced by a first preset distance. Through the first preset distance between the connecting block and the sliding block, not only can a mechanical buffering area be formed, but also the connecting block can continue to move until the connecting block abuts against the sliding block to form mechanical limiting under the condition that the pulling rope is continuously wound, and therefore a motor for driving the pulling rope to be wound is triggered to stop. In this way, when the sunshade curtain is closed in place, the generator is triggered to stop rotating in time, and redundancy of the sunshade curtain is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sunshade, in particular to a sunshade structure. BACKGROUND

[0002] In order to keep the sunshade curtain in tension during the closing process (the curtain fabric is unfolded), the spring in the pull plate is gradually increased by the tension of the pull line, which will increase the running resistance of the sunshade curtain system and change the running current value of the sunshade curtain assembly.

[0003] In the prior art, the two kinds of blocking rotation of the direct drive sunshade curtain are soft blocking rotation points. One kind of pull line is elongated, and the spring can be stretched, which cannot provide the motor blocking rotation force in time and effectively. The other kind of curtain fabric envelope has compression allowance and is affected by the extension rate fluctuation of the curtain fabric, which can be elongated, and cannot be used as a hard blocking rotation point.

[0004] However, the inventors found that at least the following technical problems exist in the related art: the motor cannot be stopped in time when the sunshade curtain is closed in place, and the sunshade curtain redundancy cannot be effectively avoided. CONTENT OF THE INVENTION

[0005] An object of the present application is to provide a sunshade structure, at least to solve the above problems.

[0006] To achieve the above object, some embodiments of the present application provide a sunshade structure, comprising a reel and a traction rope wound around the end of the reel;

[0007] A pull plate has a receiving groove in the length direction, and the end of the receiving groove is provided with a sliding block;

[0008] A spring assembly is provided with a connecting block at the end;

[0009] The traction rope is connected to the connecting block, and under the action of the traction force of the traction rope, the connecting block moves towards the sliding block, and the spring assembly deforms, driving the pull plate to move in a predetermined direction. When the pull plate moves to the predetermined position, the connecting block is spaced apart from the sliding block by a first predetermined distance.

[0010] Compared with the related art, in the scheme provided by the embodiment of the application, through the linkage design of the traction rope, the spring assembly and the connecting block, when the pull plate moves to the preset position, through the first preset distance maintained between the connecting block and the sliding block, not only a mechanical buffer interval can be formed, but also the connecting block can continue to move until abutting against the sliding block to form a mechanical limit under the condition that the traction rope continues to be wound, so that the program of continuously winding the traction rope is triggered to stop, that is, the motor driving the traction rope to be wound is stopped. In this way, not only can the pull plate be ensured to be moved to the position, but also the problem of sagging can be avoided by avoiding the excess of the sunshade curtain. The motor is timely triggered to stop while the sunshade curtain is closed to the position, and the sunshade curtain redundancy is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0011] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not restrictive, of the present embodiments, wherein elements having the same reference number designates like elements throughout the various figures, unless otherwise expressly provided for in the drawings. The figures in the drawings are not to scale and the size of some of the elements can have been exaggerated for the sake of clarity and convenience.

[0012] Figure 1 is a structural schematic view of a sunshade curtain structure provided by the embodiment of the present disclosure;

[0013] Figure 2 is Figure 1 is an enlarged schematic view of A in FIG. 1;

[0014] Figure 3 is Figure 2 is an enlarged schematic view of C in FIG. 1;

[0015] Figure 4 is Figure 1 is an enlarged schematic view of B in FIG. 1;

[0016] Figure 5 is a partial enlarged schematic view of another structure of a sunshade curtain provided by the embodiment of the present disclosure.

[0017] Reference signs:

[0018] 10: reel; 20: traction rope; 30: pull plate; 301: accommodating groove; 40: sliding block; 401: sliding connection part; 402: fixed connection part; 403: threading groove; 50: spring assembly; 501: connecting block; 502: first spring; 503: main spring; 504: intermediate column; 505: intermediate pipe; 60: limiting block; 70: fixed frame; 701: front beam; 702: rear beam; 80: fixed pulley; 90: winding wheel; 100: curtain cloth. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0020] The terms "first", "second", and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0021] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0022] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0023] Unless otherwise specified, the term "a plurality of" means two or more.

[0024] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0025] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0026] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other in the case of no conflict.

[0027] In combination Figures 1 to 5 As shown in the drawings, the sunshade structure provided by the present disclosure comprises a reel 10 and a traction rope 20 wound on the end of the reel 10, and further comprises a pull plate 30 and a spring assembly 50 arranged in the pull plate 30. The pull plate 30 not only serves as a support connected with the sunshade, but also serves as hardware for wrapping and limiting the deflection of the spring assembly 50.

[0028] The pull plate 30 is internally structured with a receiving groove 301 along the length direction, and the end of the receiving groove 301 is provided with a sliding block 40. The spring assembly 50 is provided with a connecting block 501 at the end. The traction rope 20 is connected with the connecting block 501. Under the action of the pulling force of the traction rope 20, the connecting block 501 moves to the direction of the sliding block 40, so that the spring assembly 50 is deformed, and the pull plate 30 is driven to move in a preset direction. When the pull plate 30 moves to the preset position, the connecting block 501 is spaced apart from the sliding block 40 by a first preset distance.

[0029] By adopting the sunshade structure provided by the present disclosure, through the linkage design of the traction rope 20, the spring assembly 50 and the connecting block 501, when the pull plate 30 moves to the preset position, the first preset distance maintained between the connecting block 501 and the sliding block 40 not only forms a mechanical buffer interval, but also enables the connecting block 501 to continue to move until abutting against the sliding block 40 to form a mechanical limit, so as to trigger the program of stopping the continuous winding of the traction rope 20, that is, to trigger the shutdown of the motor driving the winding of the traction rope 20. In this way, not only can the pull plate 30 be ensured to be moved to the position, but also the sunshade can be avoided to have a margin, the elongation rate of the sunshade can be ensured, and the problem of sagging can be avoided.

[0030] For example, the pull plate 30 of the present embodiment can be a split plate structure, that is, comprising a bottom plate and a cover plate. The bottom plate and / or the cover plate are structured with the receiving groove 301 for installing the spring assembly 50. After the bottom plate and the cover plate are combined, the receiving groove 301 forms a relatively closed space, so as to avoid foreign matters from entering, thereby affecting the use of the spring assembly 50. Through the split pull plate 30, the spring assembly 50 arranged in the pull plate 30 can be conveniently overhauled and maintained.

[0031] For example, the pull plate 30 of the present embodiment can be an integral structure, and a receiving groove 301 is internally milled. Then, the spring assembly 50 is worn in the receiving groove 301 of the pull plate 30. In this way, the integrity of the pull plate 30 can be ensured, and abnormal sound or other interference caused by improper installation of the pull plate 30 during use can be avoided.

[0032] In this embodiment, the modular assembly architecture integrates the motion components (spring assembly 50 and connecting block 501) through the accommodation groove 301, integrates the multiple separate components of the conventional sunshade curtain into a pre-assembled unit, reduces the installation complexity and improves the waterproof and dustproof performance.

[0033] Through the linkage design of the traction rope 20 and the connecting block 501 of the spring assembly 50, an elastic energy storage-release closed-loop system is formed under the action of traction force, so that the movement of the pull plate 30 has controllability and adaptability. When the pull plate 30 reaches the preset position, the first preset distance between the connecting block 501 and the sliding block 40 forms a mechanical buffer interval, effectively absorbing the inertial kinetic energy of the traction system and preventing wear caused by rigid collision between components. In addition, the setting of the first preset distance creates an offset redundancy space, allowing the system to compensate and adjust when temperature deformation or mechanical fatigue occurs, prolonging the service life of the key components.

[0034] In addition, the accommodation groove 301 and the guide structure of the sliding block 40 form a three-dimensional space constraint mechanism, establishing a multidirectional limiting reference during the deformation of the spring assembly 50, ensuring the linear motion precision of the pull plate 30 when translating along the preset trajectory, and avoiding the common skewing and jamming phenomenon of traditional sunshade curtains.

[0035] The spring assembly 50 and the connecting block 501 are moved by the tension of the traction rope 20, which helps to form a dynamic balance between the nonlinear deformation characteristics of the spring assembly 50 and the tension of the traction rope 20, achieving gradient distribution of the moment during the sunshade curtain unrolling / rolling process, ensuring easy operation and maintaining the structural stability of the curtain fabric 100 at any hovering position.

[0036] Optionally, the curtain fabric 100 is wound on the reel 10, and the end of the reel 10 is provided with a winding wheel 90 for winding the traction rope 20; wherein the curtain fabric 100 is connected with the pull plate 30, so that the curtain fabric 100 is unrolled under the action of the pull plate 30; the winding direction of the curtain fabric 100 is opposite to the winding direction of the traction rope 20.

[0037] The position where the pull plate 30 is close to the reel 10 is defined as the initial position, that is, at this time the curtain fabric 100 is not opened and is in the winding state. In actual application, the reel 10 is driven to rotate, the traction rope 20 wound on the reel 10 is wound, the curtain fabric 100 wound on the reel 10 is released, and the pull plate 30 moves in the direction away from the reel 10 under the action of the traction rope 20, and drives the curtain fabric 100 to move, so as to achieve the purpose of opening the sunshade curtain.

[0038] When the pull plate 30 moves to the preset position (for example, a position at which full shading is achieved, such as the other end opposite the reel 10), at this time, the spring assembly 50 reaches the maximum length of stretching in the normal operation. At this time, the close key is pressed for a long time, and the reel 10 continues to rotate, at this time, the slider 40 is in contact with the front beam 701 of the fixed frame 70, thereby limiting the pull plate 30 from continuing to move. The winding wheel 90 continues to wind the traction rope 20, at this time, based on the first preset distance between the connecting block 501 and the slider 40, the spring assembly 50 can continue to lengthen on one side by a length matching the first preset distance until the connecting block 501 abuts against the slider 40, thereby limiting the winding of the traction rope 20, triggering the reel 10 to stop rotating by mechanical limiting. In this way, not only can the pull plate 30 be ensured to move to the position and achieve the shading effect, but also the problem of sagging of the sunshade curtain can be avoided.

[0039] In the embodiment, the winding directions of the curtain fabric 100 and the traction rope 20 on the reel 10 are set to be opposite, and a bidirectional torque compensation mechanism is formed during the expansion / rolling of the sunshade curtain. When the curtain fabric 100 is expanded, the traction rope 20 is simultaneously tightened to generate a reverse torque, which effectively offsets the unilateral bias load caused by the weight of the curtain fabric 100. In addition, the integrated design of the winding wheel 90 and the reel 10 enables the coaxial transmission of the two winding force systems, and eliminates the radial vibration interference of the traditional split transmission structure.

[0040] The curtain fabric 100 is directly fixed on the pull plate 30, and the curtain fabric 100 is expanded by moving the pull plate 30. The pull plate 30 directly converts the elastic energy storage of the spring assembly 50 into the linear driving force of the expansion of the curtain fabric 100, and avoids the elastic hysteresis problem of the traditional soft connection.

[0041] Optionally, the sunshade curtain structure further comprises a limiting block 60, which is arranged between the connecting block 501 and the slider 40 and can slide in the accommodation groove 301 of the pull plate 30; and the traction rope 20 is arranged in and fixed to the limiting block 60.

[0042] A limiting block 60 is additionally arranged between the connecting block 501 and the sliding block 40, further increasing a mechanical limiting procedure. That is, when the pull plate 30 moves to a preset position, the stretching length of the spring assembly 50 reaches a maximum value in the normal operation process. At this time, the closing key is pressed for a long time, and during this time, the winding shaft 10 will continue to rotate, and at this time, the sliding block 40 contacts the front beam 701 of the fixed frame 70, thereby limiting the pull plate 30 from continuing to move. The winding wheel 90 continues to wind the traction rope 20, and at this time, based on the fact that the limiting block 60 is located between the connecting block 501 and the sliding block 40, the spring assembly 50 can continue to be stretched on one side until the limiting block 60 abuts against the sliding block 40, thereby limiting the winding of the traction rope 20, and through the mechanical limiting mode, the rotation of the winding shaft 10 is triggered to stop. A mechanical stop is formed before the connecting block 501, and in special cases, the limiting block 60 contacts the connecting block 501 and the sliding block 40 respectively to form a double mechanical stop, thereby preventing the spring assembly 50 from over-traveling stretching.

[0043] In addition, the limiting block 60 scrapes the inner wall of the accommodating groove 301 during sliding, automatically removing accumulated dust particles, thereby maintaining the long-term operation stability of the system.

[0044] Optionally, in the case where the pull plate 30 moves to a preset position, the limiting block 60 is spaced apart from the sliding block 40 by a second preset distance, and the second preset distance is less than or equal to the first preset distance.

[0045] The embodiment can be understood as follows: in the case where the pull plate 30 moves to a preset position (for example, a position at which full sun-shading is achieved, such as the other end opposite to the winding shaft 10), a second preset distance is provided between the limiting block 60 and the sliding block 40, thereby leaving a margin space for the continuous rotation of the winding shaft 10 and the continuous winding of the traction rope 20. In this way, not only can the pull plate 30 be ensured to move to the position, thereby achieving the sun-shading effect, but also the problem of sagging of the sun-shading curtain can be avoided.

[0046] Based on the fact that the limiting block 60 is located between the connecting block 501 and the sliding block 40, the second preset distance is set to be less than or equal to the first preset distance, thereby ensuring the overall use effect.

[0047] Optionally, the first preset distance is 10-40 mm. The first preset distance is designed to be 10-40 mm, which not only breaks through the design convention that the traditional sun-shading curtain buffer interval is greater than or equal to 50 mm, but also enables the spring assembly 50 to effectively absorb kinetic energy in a small space. Moreover, the 40 mm interval ensures that the winding shaft 10 is timely stopped when the spring assembly 50 fails, thereby preventing complete out-of-control.

[0048] Optionally, the sun-shading curtain structure further comprises: the fixed frame 70, which is a frame structure and comprises parallel front and rear beams 701 and 702; the fixed pulley 80, which is arranged on the front and rear beams 701 and 702 of the fixed frame 70, respectively, together with the winding shaft 10; and wherein the traction rope 20 on the winding shaft 10 passes through the fixed pulley 80 and is connected to the connecting block 501.

[0049] The fixed pulley 80 is usually fixed and rotatably arranged on the front beam 701, and the traction rope 20 is wound on the fixed pulley 80, so that the traction rope 20 changes the extending direction to connect the spring assembly 50 in the pull plate 30, so that the pull plate 30 is pulled to unroll the curtain fabric 100 through the rotation of the winding shaft 10. During the winding and unwinding rotation of the winding shaft 10, the traction rope 20 can drive the fixed pulley 80 to rotate, thereby playing a force unloading role, reducing the friction resistance of the fixed pulley 80, and making the winding and unwinding movement of the sunshade curtain more smooth.

[0050] Optionally, the pull plate 30 is slidably connected to the side of the fixed frame 70 through the sliding block 40, and the sliding block 40 comprises a sliding connection part 401 matched with the fixed frame 70 and a fixed connection part 402 matched with the accommodating groove 301 of the pull plate 30; wherein the sliding connection part 401 and the fixed connection part 402 are both configured with a threading groove 403 to thread the traction rope 20.

[0051] The sliding connection part 401 is located outside the pull plate 30, which not only realizes the sliding connection of the pull plate 30 and the fixed frame 70, but also plays a role in plugging the accommodating groove 301 of the pull plate 30 to avoid foreign matters from entering the accommodating groove 301. Moreover, the sliding block 40 is dual-purpose, which reduces the number of components and facilitates disassembly and assembly.

[0052] In addition, the sliding connection part 401 bears the lateral shear force of the fixed frame 70, and the fixed connection part 402 transmits the axial driving force of the pull plate 30, thereby realizing the spatial decoupling of the force system and reducing the stress concentration of the connection interface.

[0053] For example, the sliding block 40 is in T-shaped structure, and the threading grooves 403 of the sliding connection part 401 and the fixed connection part 402 are in L-shaped structure, which not only can play a role in placing the traction rope 20, but also can guide the traction rope 20 in advance, thereby prolonging the overall connection length of the traction rope 20 and the pull plate 30.

[0054] Optionally, the spring assembly 50 comprises a first spring 502, an intermediate column 504 and a second spring connected in sequence, and the first spring 502 and the second spring are equal in length. In this way, during the movement of the pull plate 30, the first spring 502 and the second spring are synchronously deformed to form a mirror stress distribution, thereby eliminating the torque deviation when a single spring is driven. In addition, the force-offset curve of the two springs is superimposed to form a trapezoidal stiffness characteristic, which provides high initial stiffness (reduces impact) at the start and stop stage of the sunshade curtain and maintains low stiffness (energy-saving driving) in the middle section. Furthermore, the intermediate column 504 shifts the maximum stress point of the spring assembly 50 to the middle part of the column.

[0055] In practical application, the spring assembly 50 is designed in split structure, when the single-side spring is broken, the middle column 504 can be used as a physical isolation barrier to prevent the other-side spring from being damaged. And the first or second spring can be replaced separately.

[0056] Optionally, the spring assembly 50 comprises a main spring 503 and a middle tube 505, the main spring 503 is sleeved in the middle tube 505 to limit the deflection of the main spring 503.

[0057] The main spring 503 is sleeved in the middle tube 505, and the maximum lateral deflection of the main spring 503 is limited within a predetermined range by the middle tube 505. When the spring is compressed to a critical length, the middle tube 505 provides a lateral support force to prevent the spring from buckling failure.

[0058] Optionally, the traction rope 20, the winding wheel 90 and the fixed pulley 80 correspondingly form a traction assembly, and the traction assembly is arranged at both ends of the reel 10 and both ends of the pull plate 30. The traction assembly arranged at both ends of the reel 10 and the pull plate 30 can help to evenly bear force at both ends during the driving of the pull plate 30, so as to keep the force balance with the curtain fabric 100 and ensure the smooth driving of the pull plate 30.

[0059] Optionally, the sunshade curtain structure further comprises a driving motor, which is drivingly connected with the reel 10 to drive the reel 10 to rotate. It should be noted that the driving motor can drive the reel 10 to rotate through the rotation of the output shaft thereof, and the specific implementation mode has various cases, for example, in one case, the output shaft of the driving motor is rotationally connected to the end of the reel 10 through a shaft coupling, and in another case, the end of the reel 10 is provided with an input gear, the output shaft of the driving motor is arranged in parallel with the reel 10, and an output gear is arranged on the output shaft and engaged with the input gear. The user can control the driving motor to rotate forward or reverse through the switch, thereby driving the reel 10 to rotate forward or reverse, that is, the sunshade curtain is retracted or extended. This driving mode has high automation degree and can improve the user experience.

[0060] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims, and the above embodiments should be considered exemplary and non-limiting.

Claims

1. A shade structure comprising a roller and a pull cord wound around the end of the roller, characterized in that, Also include: The pull plate is internally structured with a receiving slot along the length direction, and the end of the receiving slot is provided with a sliding block; The spring assembly is provided with a connecting block at the end; Wherein, the traction rope is connected with the connecting block, under the action of the traction rope, the connecting block moves to the sliding block direction, and the spring assembly is deformed, driving the pull plate to move in the preset direction, when the pull plate moves to the preset position, the connecting block is spaced from the sliding block by a first preset distance.

2. The shade structure of claim 1, wherein, Also include: The limiting block is arranged between the connecting block and the sliding block, and can slide in the receiving slot of the pull plate; Wherein, the traction rope is threaded on the limiting block and fixed.

3. The shade structure of claim 2, wherein, In the case of moving the pull plate to the preset position, the limiting block is spaced from the sliding block by a second preset distance, and the second preset distance is less than the first preset distance.

4. The shade structure of claim 1, wherein, The first preset distance is 10-40mm.

5. The shade structure of claim 1, wherein, Also include: The fixed frame is a frame structure, including parallel front beam and rear beam; The fixed pulley is arranged on the front beam and rear beam of the fixed frame respectively; Wherein, the traction rope on the reel is wound around the fixed pulley and connected with the connecting block.

6. The shade structure of claim 5, wherein, The pull plate is slidably connected to the side of the fixed frame through the sliding block, and the sliding block includes a sliding connection part matched with the fixed frame and a fixed connection part matched with the receiving slot of the pull plate; Wherein, the sliding connection part and the fixed connection part are both structured with a threading slot to thread the traction rope.

7. The shade structure of claim 1, wherein, The spring assembly includes a first spring, an intermediate column and a second spring connected in sequence, and the first spring and the second spring are equal in length; or, The spring assembly includes a main spring and an intermediate tube, and the main spring is threaded in the intermediate tube to limit the deviation of the main spring.

8. The shade structure of claim 1, wherein, The reel is wound with a curtain, and the end of the reel is provided with a winding wheel for winding the traction rope; Wherein, the curtain is connected with the pull plate to make the curtain unfold under the action of the pull plate; the winding direction of the curtain is opposite to the winding direction of the traction rope.

9. The shade structure of claim 8, wherein, The traction rope, the winding wheel and the fixed pulley one-to-one correspond to form a traction assembly, and the traction assembly is arranged corresponding to the two ends of the reel and the two ends of the pull plate.

10. The shade structure of any one of claims 1 to 9, wherein, Also include: The driving motor is drivingly connected with the reel to drive the reel to rotate.

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