Electric sunshade curtain provided with narrow and deep groove rope folding device

Abstract

The utility model discloses an electric sunshade curtain provided with a narrow and deep groove rope folding device, which comprises a fixed support arranged at the front end and the rear end of a window frame, a main shaft is respectively sleeved and fixed on two sides of the front end support, and the main shaft is respectively sleeved with the rope folding device, a spring seat I, a torsion spring and a spring seat II; a cloth rolling pipe is sleeved on the spring seat II, a speed reducing motor is arranged in the cloth rolling pipe, and a driving wheel is sleeved and fixed on an output shaft of the speed reducing motor; rope passing wheels are sleeved and fixed on supports on two sides of the rear end, and steel wire ropes are tied at two ends of a traction rod at the tail end of the curtain cloth. A groove of an idler wheel, rotating around a main shaft, of the rope stacking device is a narrow deep groove, the width of the groove of the idler wheel is approximately equal to the diameter of a steel wire rope, the steel wire rope is wound in the radial direction of the groove of the idler wheel of the rope stacking device, and the steel wire rope is restrained by the groove width and wound in the narrow deep groove of the idler wheel of the rope stacking device in a stacked mode. The curtain cloth can be tensioned left and right synchronously, and the pipe diameter of the roller shutter is fine and attractive.

Description

Technical Field

[0001] The utility model relates to an electric sunshade curtain. Background Art

[0002] With the rapid development of intelligent buildings, a variety of electric sunshades have emerged for use under skylights or skylights. Commonly used include FTS dual-motor electric tensioning canopy shades, FSS spring electric tensioning canopy shades, and FCS wire-guided folding canopy shades. The key feature of FSS spring electric tensioning canopy shades is a torsion spring mechanism installed within a curtain reel tube at one end, and a cord winder mounted on a long tube at the other end, housed within a tubular motor. When the motor is driven to provide shade, the curtain is pulled out, the cord winder winds up the wire, and the torsion spring simultaneously rotates and tightens the curtain. For example, Patent (Torsion Winding Differential Canopy Shade, Roller Shade) Authorization Announcement No. CN102767328 B is a typical FSS electric sunshade solution. Due to its economical and aesthetically pleasing design, FSS spring electric tensioning canopy shades are now being used in numerous architectural applications, achieving positive social benefits.

[0003] However, the FSS spring electric tensioning sunshade also has some disadvantages:

[0004] Since the steel wire is wound on the retractor roller along the axial direction of the roller, the steel wires on both sides are subjected to uneven force, and the wound steel wires will also be unevenly tight. The steel wires on both sides are not effectively controlled to be of equal length at the same time. After a period of use, it is common for the left and right sides of the curtain to be out of sync and damaged.

[0005] Moreover, due to the use of an outer tube and an inner tube, a spring between the inner and outer tubes, and a tubular motor inside the inner tube, the diameter of the device is obviously too thick. Summary of the Invention

[0006] The utility model aims to provide an electric sunshade curtain with left and right synchronous tensioning of curtain fabrics and a fine diameter of rolling curtain tube and a narrow and deep groove rope stacker installed.

[0007] The technical solution of this utility model is:

[0008] An electric sunshade with a narrow and deep groove rope stacker is characterized by comprising brackets fixedly mounted on the front and rear ends of a window frame;

[0009] The left and right sides of the front bracket have the same structure, and are respectively fixed with a main shaft. The main shaft is equipped with a rope stacker, spring seat I, torsion spring and spring seat II. Spring seat I is fixed to the rope stacker by end screws, and the rope stacker and spring seat I rotate together on the main shaft. The cloth winding tube is installed on the spring seat II, and the inner wall of the cloth winding tube is engaged with the spring seat II. The cloth winding tube and spring seat II rotate together on the main shaft. The two ends of the torsion spring are respectively fixed to the spring seat I and spring seat II.

[0010] A reduction motor is installed inside the cloth winding tube. A drive wheel is mounted on and fixed to the output shaft of the reduction motor. The inner wall of the cloth winding tube engages with the drive wheel, and the cloth winding tube and the drive wheel rotate together. The housing of the reduction motor is fixed to the end of one side of the main shaft. When the motor is driven, the drive wheel rotates the cloth winding tube, which in turn drives the spring seat II to rotate, tightening or loosening the torsion spring.

[0011] The left and right sides of the rear end bracket have the same structure, both including a rope pulley fixed to the bracket; the two ends of the traction rod at the end of the curtain are tied with a wire rope, the wire rope passes around the rope pulley, and the wire rope is wound in the groove of the roller of the rope stacker;

[0012] The rope stacker includes a roller rotating around a main axis, and the groove of the roller is a narrow and deep groove. The groove width is greater than or equal to the diameter of a steel wire rope, and the width can only accommodate one steel wire rope, and the groove depth can accommodate multiple layers of steel wire ropes. When the steel wire rope is wound, it is wound in the radial direction of the roller groove of the rope stacker. The steel wire rope is constrained by the groove width and is superimposed and wound in the narrow and deep groove of the roller of the rope stacker.

[0013] The tail of the reduction motor is provided with a tail shaft, a magnetic ring is mounted and fixed on the shaft, and a detection circuit board is mounted and fixed on the terminal of the motor for detecting the rotation speed of the motor and the stroke position of the sunshade.

[0014] The utility model realizes synchronous tensioning of the curtain cloth on the left and right sides, and the diameter of the rolling curtain tube is fine and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural diagram of an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the present utility model.

[0018] In the figure: 01 bracket; 02 rope stacker; 03 spring seat I; 04 torsion spring; 05 spring seat II; 06 cloth winding tube; 07 driving wheel; 08 reduction motor; 09 roller blind; 10 wire rope; 11 rope pulley. DETAILED DESCRIPTION

[0019] An electric sunshade equipped with a narrow and deep groove rope stacker includes a bracket 01 fixedly mounted on the front and rear ends of a window frame; the left and right sides of the front bracket have identical structures, each of which is respectively fixed with a main shaft, on which a rope stacker 02, a spring seat I 03, a torsion spring 04, and a spring seat II 05 are mounted; the spring seat I is fixed to the rope stacker via end screws, and the rope stacker and spring seat I rotate together on the main shaft; a cloth winding tube is mounted on the spring seat II, and the inner wall of the cloth winding tube and the spring seat II are engaged via a slot structure, so that the cloth winding tube 06 and the spring seat II rotate together on the main shaft; the ends of the torsion spring are respectively fixed to the spring seat I and the spring seat II.

[0020] A reduction motor 08 is installed inside the cloth winding tube. A drive wheel 07 is mounted on and fixed to the output shaft of the reduction motor. The inner wall of the cloth winding tube and the drive wheel are engaged with each other through a slot structure, so that the cloth winding tube and the drive wheel rotate together. The housing of the reduction motor is fixed to the end of one side of the main shaft. When the motor is driven, the drive wheel rotates the cloth winding tube, which in turn drives the spring seat II to rotate, tightening or loosening the torsion spring.

[0021] The left and right sides of the rear bracket have the same structure, both including a rope pulley 11 fixed to the bracket; the ends of the traction rod at the end of the curtain are tied with a wire rope 10; when the motor is driven to shade the sun, the curtain is stretched, and the wire rope passes around the rope pulley. The cloth winding tube drives the spring seat II to rotate, which drives the torsion spring to rotate together, causing the spring seat I and the rope stacker to rotate in the same direction, and the wire rope is tightened and wound into the groove of the rope stacker's roller.

[0022] The rope stacker includes a roller rotating around a main axis, and the groove of the roller is a narrow and deep groove. The groove width is greater than or equal to the diameter of a steel wire rope, and the width can only accommodate one steel wire rope, and the groove depth can accommodate multiple layers of steel wire ropes. When the steel wire rope is wound, it is wound in the radial direction of the roller groove of the rope stacker. The steel wire rope is constrained by the groove width and is superimposed and wound in the narrow and deep groove of the roller of the rope stacker. Since the steel wire ropes are superimposed and wound, the steel wire ropes on both sides are always of equal length, and the two sides of the curtain 09 are always kept synchronously tensioned.

[0023] In order to further achieve the tensioning of the curtain in the sunshade state, the torsion spring must have a large torque after the motor stops in place in the sunshade state to tighten the wire rope and thus tighten the curtain. For this reason, the torsion spring needs to be tensioned when installing the roller blind. Before tensioning the torsion spring: Calculate the required total length of wire rope, L, based on the curtain's opening stroke and the inner diameter of the rope stacker's narrow, deep groove. L > (curtain's opening stroke × 2 + narrow, deep groove pulley diameter d * π). Calculate and experimentally determine the required number of pretension turns, n, based on the curtain's weight, the spring's stiffness, the number of effective turns, and other mechanical properties. To tension the torsion spring: Unroll the curtain, tie one end of a wire rope, L, to the drawbar at the curtain's end, and wind the other end through n+1 turns in the rope stacker's narrow, deep groove. Pulling the wire rope or rotating the rope stacker pulls the wire rope prewound in rope stacker 02 out and into the rope pulley groove 11. This pulling of the wire rope simultaneously rotates rope stacker 02, which generates torque in the torsion spring, connecting the wire rope to the curtain and tensioning the curtain. Once the pretensioning force meets the requirements, secure spring seat I to the rope stacker using the end screws.

[0024] Since the rope stacker and spring seat I rotate together on the main shaft, the cloth winding tube and spring seat II rotate together on the main shaft, and the two ends of the torsion spring are respectively clamped and fixed on the spring seat I and spring seat II; that is, the rolling up of the sunshade corresponds to the steel wire rope being pulled out in the rope stacker groove, and the extension of the sunshade corresponds to the steel wire rope being wound and retracted in the rope stacker groove; since the torsion spring has been tensioned, no matter whether the sunshade is rolled up or extended, the rotation of the cloth winding tube and rope stacker are tensioned relative rotations, so the curtain cloth is always tensioned and does not sag.

[0025] When the roller blind is electrically driven for sunshade, the 08 reduction motor outputs torque through the 07 driving wheel to rotate, the 07 driving wheel drives the 06 outer tube to rotate, the 09 roller blind extends, and at the same time the 05 spring seat Ⅱ rotates synchronously. Since the spring seat Ⅰ 03 and the spring seat Ⅱ 05 are connected by the torsion spring 04, the 02 rope stacker is driven to rotate together. The 10 steel wire rope is tightened and wound in the 02 rope stacker, and the 09 roller blind is tightened to move. When the 09 roller blind opens to the set position, it stops automatically, realizing the full opening and sunshade action of the roller blind.

[0026] When the electric drive rolls up the curtain, the reduction motor (08) rotates in reverse, driving the drive wheel (07) and rotating the outer tube (06). The curtain (09) retracts and rolls up, extending the wire rope (10) in the rope stacker slot. Simultaneously, the outer tube (06) rotates the spring seat (05) in reverse. Because the torsion spring is tensioned, it rotates the spring seat (1) and the rope stacker (02) in reverse, releasing the wire rope (10) in the rope stacker slot. When the curtain (09) retracts to the set position, it automatically stops, completing the rolling action.

[0027] Furthermore, the planetary reduction motor has a tail shaft at its rear end, onto which a magnetic ring is mounted and fixed. A detection circuit board is mounted and fixed to the motor's terminals, which detects the motor's current, speed, and the travel position of the sunshade. By detecting travel and the circuitry that increases current when resistance is encountered, a travel self-learning function can be implemented. The traction rod for manually pulling or lifting the curtain can also be used to manually pull the curtain to shade or manually lift the curtain to open the curtain.

Claims

1. An electric sunshade with a narrow and deep groove rope stacker, characterized by: It includes brackets fixedly mounted on the front and rear ends of the window frame; The left and right sides of the front bracket have the same structure, and are respectively fixed with a main shaft. The main shaft is equipped with a rope stacker, spring seat I, torsion spring and spring seat II. Spring seat I is fixed to the rope stacker by end screws, and the rope stacker and spring seat I rotate together on the main shaft. The cloth winding tube is installed on the spring seat II, and the inner wall of the cloth winding tube is engaged with the spring seat II. The cloth winding tube and spring seat II rotate together on the main shaft. The two ends of the torsion spring are respectively fixed to the spring seat I and spring seat II. A reduction motor is installed inside the cloth winding tube. A drive wheel is mounted on and fixed to the output shaft of the reduction motor. The inner wall of the cloth winding tube engages with the drive wheel, and the cloth winding tube and the drive wheel rotate together. The housing of the reduction motor is fixed to the end of one side of the main shaft. When the motor is driven, the drive wheel rotates the cloth winding tube, which in turn drives the spring seat II to rotate, tightening or loosening the torsion spring. The left and right sides of the rear end bracket have the same structure, both including a rope pulley fixed to the bracket; the two ends of the traction rod at the end of the curtain are tied with a wire rope, the wire rope passes around the rope pulley, and the wire rope is wound in the groove of the roller of the rope stacker; The rope stacker includes a roller rotating around a main axis, and the groove of the roller is a narrow and deep groove. The groove width is greater than or equal to the diameter of a steel wire rope, and the width can only accommodate one steel wire rope, and the groove depth can accommodate multiple layers of steel wire ropes. When the steel wire rope is wound, it is wound in the radial direction of the roller groove of the rope stacker. The steel wire rope is constrained by the groove width and is superimposed and wound in the narrow and deep groove of the roller of the rope stacker.

2. The electric sunshade with a narrow and deep groove rope stacker according to claim 1 is characterized by: The tail of the reduction motor is provided with a tail shaft, a magnetic ring is mounted and fixed on the shaft, and a detection circuit board is mounted and fixed on the terminal of the motor for detecting the rotation speed of the motor and the stroke position of the sunshade.

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