Reel device of shutter

Abstract

The utility model discloses a reel device of a shutter, and belongs to the technical field of curtains. The utility model discloses a reel device of a shutter. The reel device comprises a reel device, the reel device comprises a rope winding part, an inner connecting sleeve, a page turning wheel and a reversing spring; the rope winding part is coaxial with the page turning wheel through the inner connecting sleeve and is axially sleeved with the page turning wheel in a limiting manner; the reversing spring is arranged at the tail end of the page turning wheel in a sleeving mode and located on the inner side of the page turning wheel, and the inner connecting sleeve is located between the page turning wheel and the reversing spring and rotates synchronously with the page turning wheel. The page turning wheel and the reversing spring are matched and provided with a rotation stopping unit, and after the page turning wheel rotates till the reversing spring abuts against the rotation stopping unit, rotation stopping is kept so that the rope winding part can be rotated after rotation stopping of the page turning wheel. The total length of the reel device can be reduced, so that the material consumption and the total volume of the device are reduced, and the overall impression of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of curtains, and more specifically relates to a roller device for blinds. Background Art

[0002] Venetian blinds are widely used in office buildings, conference rooms, hotel lobbies, coffee shops, study rooms and other places. By installing Venetian blinds on the windows on one side of the room, they can achieve the purpose of sunshade.

[0003] The Venetian blinds have a winding tube for connecting the blinds, with a reel installed on one end of the winding tube and a bead control head installed on the other end of the winding tube. When using, you only need to pull the bead on the Venetian blinds to drive the bead wheel to rotate. At this time, the control head rotates and drives the winding tube and the Venetian blinds to rotate together, thereby moving the Venetian blinds up and down.

[0004] In existing reels, the steering spring is usually arranged on the outside of the rope drum. This arrangement has at least the following defects: 1. The steering spring is arranged on the outside of the reel, and the total length of the reel is longer, resulting in an increase in the size of the device and more materials; 2. The steering spring is exposed on the outside of the control head, and the overall appearance of the device is not beautiful. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a roller device for a Venetian blind, in which the steering spring is hidden inside the roller, which can reduce the total length of the roller, thereby reducing the material consumption and total volume of the device and improving the overall appearance of the device.

[0006] The present invention provides a reel device for a Venetian blind, comprising a reel. The reel comprises a cord-winding portion, an inner connecting sleeve, a page-turning wheel, and a reversing spring. The cord-winding portion is coaxial with the page-turning wheel via the inner connecting sleeve and is axially limited. The reversing spring is sleeved at the rear end of the page-turning wheel and located inside the page-turning wheel. The inner connecting sleeve is located between the page-turning wheel and the reversing spring and rotates synchronously with the page-turning wheel. A rotation-stopping unit is provided in conjunction with the page-turning wheel and the reversing spring. After the page-turning wheel rotates until the reversing spring abuts the rotation-stopping unit, the reel remains stationary, allowing the cord-winding portion to rotate after the page-turning wheel stops rotating.

[0007] As a further improvement of the present invention, the anti-rotation unit includes a mounting block and a limiting block. The mounting block is fixedly mounted on the rear side of the flip wheel, and the mounting block includes an anti-rotation block, which is inserted inwardly into the interior of the flip wheel and is located on the inner side of the reversing spring. The limiting block is fixedly mounted on the flip wheel, and the limiting block is embedded in the inner side of the reversing spring and is located on the upper side of the anti-rotation block. The reversing spring includes anti-rotation bars that are symmetrically arranged on the left and right, and the anti-rotation bars are axial protrusions on the inner side of the reversing spring. The limiting block is located between the anti-rotation bars on both sides. When the flip wheel is in the anti-rotation state, the anti-rotation bar abuts against any side surface of the anti-rotation block.

[0008] As a further improvement of the present invention, when the page turning wheel is in the stopped state, it is an idle stroke state, and when the rope winding part rotates, the page turning wheel remains stationary.

[0009] As a further improvement to the present invention, the cord winding unit includes a cap and a cord drum. The cap is mounted on the front end of the cord drum and engages with the drum. The rear end of the drum is interlocked with the front end of an inner connecting sleeve, which is then inserted into the interior of the drum. A pull cord is sequentially wound around the drum to pull the blind up and down.

[0010] As a further improvement of the present invention, the invention further comprises a mounting frame. The upper side of the mounting frame is sequentially axially provided with arc-shaped supporting frames to respectively support the rope winding portion and the page turning wheel, and the rope winding portion and the page turning wheel can axially rotate on the supporting frames.

[0011] As a further improvement of the present invention, a straight notch-shaped mounting groove is provided on the lower side of the mounting frame. The mounting frame is fixed on the aluminum track by screws.

[0012] As a further improvement of the present invention, the device further comprises a beading head and a reel. One end of the reel is sleeved onto the beading head, and the other end is sleeved onto the reel. The beading head is capable of independent rotation around its axis, allowing the beading head to drive the reel to rotate synchronously.

[0013] As a further improvement of the present invention, the bead-pulling head comprises a support portion and a rotating portion. A winding tube is sleeved around the outer periphery of the rotating portion to achieve synchronous rotation. The support portion and the rotating portion are rotationally connected via a core shaft. A bead is fixedly mounted on the support portion, and the bead and the core shaft are connected via a planetary gear carrier.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By setting up a reel, the steering spring is hidden inside the reel. Compared with the existing setting method of setting the steering spring on the outside of the control head, the total length of the reel can be reduced, and the overall structure of the device is relatively simple, so as to reduce the material consumption and total volume of the device, reduce the production cost of components and improve production efficiency; the setting of the rope winding part, the internal connecting sleeve, the page turning wheel and the reversing spring conforms to the compact principle, making the appearance of the device more beautiful, which is conducive to improving the overall appearance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the reel of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of the installation slot of the utility model;

[0018] Figure 3 This is a schematic structural diagram of the mounting block of the present utility model;

[0019] Figure 4 This is an exploded view of the reel of the present invention;

[0020] Figure 5 It is a cross-sectional view of the reel of the present utility model;

[0021] Figure 6 This is a schematic structural diagram of the page turning wheel, reversing spring and mounting block of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure in which the reversing spring of the utility model is installed in the page turning wheel;

[0023] Figure 8 This is a cross-sectional view of the reversing spring of the utility model installed in the page turning wheel;

[0024] Figure 9 This is a structural diagram of the bead-making head of the utility model;

[0025] Figure 10 It is a cross-sectional view of the bead drawing head of the present invention.

[0026] Description of the numbers in the figure:

[0027] Mounting frame 1, mounting groove 12, mounting block 13, mounting hole 14, anti-rotation block 15, cover cap 2, rope drum 3, inner connecting sleeve 4, page turning wheel 5, limit block 51, reversing spring 6, bead pulling head 7, support part 71, rotating part 72. DETAILED DESCRIPTION

[0028] Specific embodiment 1: Please refer to Figures 1-10 A roller device for a Venetian blind comprises a roller, a bead head 7 and a roller tube, which are axially arranged on an aluminum track in sequence. The aluminum track is installed on the inner side of the door and window frame, and the Venetian blind is installed on the lower side of the aluminum track.

[0029] One end of the winding tube is sleeved on the bead pulling head 7, and the other end is sleeved on the reel. The bead pulling head 7 has the ability to rotate independently around the axis, so that the bead pulling head 7 can drive the reel to rotate synchronously. The bead pulling head 7 includes a support portion 71 and a rotating portion 72. The winding tube is sleeved on the outer periphery of the rotating portion 72 to achieve synchronous rotation. The support portion 71 and the rotating portion 72 are rotatably connected through a core shaft, and a bead is fixedly provided on the support portion 71, and the bead and the core shaft are connected through a planetary gear frame. It should be noted that the bead pulling head 7 is an existing conventional head, and its specific structure and connection relationship will not be repeated here.

[0030] The reel comprises a rope winding unit, an inner connecting sleeve 4, a page-turning wheel 5, and a reversing spring 6. The rope winding unit is coaxially mounted with the page-turning wheel 5 via the inner connecting sleeve 4 and is axially restrained. The reversing spring 6 is sleeved on the rear end of the page-turning wheel 5 and located inside the page-turning wheel 5. The inner connecting sleeve 4 is positioned between the page-turning wheel 5 and the reversing spring 6, rotating synchronously with the page-turning wheel 5. The page-turning wheel 5 and the reversing spring 6 are equipped with a rotation stop unit. Once the page-turning wheel 5 rotates until the reversing spring 6 abuts the rotation stop unit, the rope winding unit remains stationary, allowing rotation of the rope winding unit after the page-turning wheel 5 stops.

[0031] When the page turning wheel 5 is in the stopped state, it is in the idle stroke state. When the rope winding part rotates, the winding tube drives the rope winding part to rotate, and the page turning wheel 5 remains stationary and rotates in different directions to the left and right, so that the blades of the blinds are opened or closed, completing the dimming of the blinds.

[0032] The anti-rotation unit includes a mounting block 13 and a limit block 51. The mounting block 13 is fixedly mounted on the rear side of the flip wheel 5. The mounting block 13 includes a stop block 15, which is inserted inwardly into the flip wheel 5 and is located on the inner side of the reversing spring 6. The limit block 51 is fixedly mounted on the flip wheel 5. The stop block 51 is embedded in the inner side of the reversing spring 6 and is located on the upper side of the stop block 15. The reversing spring 6 includes a symmetrical anti-rotation bar, which is an axial protrusion on the inner side of the reversing spring 6. The limit block 51 is located between the anti-rotation bars on both sides. When the flip wheel 5 is in the anti-rotation state, the stop bar abuts against any side surface of the stop block 15.

[0033] The cord winding unit includes a cap 2 and a cord drum 3. The cap 2 is positioned at the front end of the cord drum 3, and the cap 2 and cord drum 3 are interlocked. The rear end of the cord drum 3 is interlocked with the front end of an inner connecting sleeve 4, which is then inserted into the interior of the cord drum 3. A draw cord is sequentially wound around the cord drum 3 to pull the Venetian blind up and down. It should be noted that the draw cord winding method is not limited in this embodiment; the draw cord is connected to the Venetian blind and the draw cord winding method adopts existing conventional arrangements.

[0034] The reel also includes a mounting frame 1. The upper side of the mounting frame 1 is axially mounted with arc-shaped brackets, which respectively support the cord winding unit and the page turning wheel 5. The cord winding unit and the page turning wheel 5 can rotate axially on the brackets. The lower side of the mounting frame 1 is provided with a straight slot-shaped mounting groove 12. The mounting frame 1 is fixed to an aluminum track with screws.

[0035] Working principle:

[0036] The reel, bead head 7 and reel tube are axially arranged on the aluminum track in sequence. The aluminum track is installed on the inner side of the door and window frame, and the blinds are installed on the lower side of the aluminum track. When the user pulls the bead on the bead head 7, the reel tube is driven to rotate, and the rotation of the reel tube drives the rope part of the reel to rotate. First, the reversing spring 6 drives the page turning wheel 5 to rotate. When the limit bar abuts against one side of the anti-rotation block 15 and stops, the page turning wheel 5 is in an empty stroke state, and the curtains are dimmed by the page turning wheel 5. After the dimming is completed, the rope wrapped around the rope drum 3 is sequentially wound on its outer peripheral side, and the rope drives the connected blinds to move up and down.

Claims

1. A roller device for a Venetian blind, characterized in that: The invention comprises a reel; the reel comprises a rope winding part, an inner connecting sleeve (4), a page turning wheel (5) and a reversing spring (6); the rope winding part is coaxial with the page turning wheel (5) through the inner connecting sleeve (4) and is axially limited; the reversing spring (6) is sleeved on the tail end of the page turning wheel (5) and located on the inner side of the page turning wheel (5); the inner connecting sleeve (4) is located between the page turning wheel (5) and the reversing spring (6) and rotates synchronously with the page turning wheel (5); the page turning wheel (5) and the reversing spring (6) are provided with a rotation-stopping unit, and the page turning wheel (5) is rotated until the reversing spring (6) contacts the rotation-stopping unit and remains stopped, so that the rope winding part can be rotated after the page turning wheel (5) stops rotating.

2. The roller device for a Venetian blind according to claim 1, characterized in that: The anti-rotation unit comprises a mounting block (13) and a limiting block (51); the mounting block (13) is fixedly arranged on the rear side of the flip wheel (5), the mounting block (13) comprises an anti-rotation block (15), the anti-rotation block (15) is inserted inwardly into the inside of the flip wheel (5), and the anti-rotation block (15) is located on the inner side of the reversing spring (6); the limiting block (51) is fixedly arranged on the flip wheel (5), the limiting block (51) is embedded in the inner side of the reversing spring (6), and is located on the upper side of the anti-rotation block (15); the reversing spring (6) comprises an anti-rotation bar arranged symmetrically on the left and right, the anti-rotation bar is an axial protrusion on the inner side of the reversing spring (6), and the limiting block (51) is located between the anti-rotation bars on both sides; when the flip wheel (5) is in the anti-rotation state, the anti-rotation bar abuts against any side surface of the anti-rotation block (15).

3. The roller device for a Venetian blind according to claim 2, characterized in that: When the page turning wheel (5) is in a non-rotating state, it is in an idle stroke state, and when the rope winding portion rotates, the page turning wheel (5) remains stationary.

4. The roller device for a Venetian blind according to claim 1, characterized in that: The rope winding part comprises a cover cap (2) and a rope winding drum (3); the cover cap (2) is arranged at the front end of the rope winding drum (3), and the cover cap (2) and the rope winding drum (3) are mutually engaged; the rear end of the rope winding drum (3) and the front end of the inner connecting sleeve (4) are mutually engaged, and the inner connecting sleeve (4) is sleeved inside the rope winding drum (3); the pull rope is sequentially wound around the rope winding drum (3) and is used to pull the blinds up and down.

5. The roller device for a Venetian blind according to claim 1, characterized in that: It also includes a mounting frame (1); the upper side surface of the mounting frame (1) is axially provided with arc-shaped support frames in sequence to support the rope winding part and the page turning wheel (5) respectively, and the rope winding part and the page turning wheel (5) can rotate axially on the support frames.

6. The roller device for a Venetian blind according to claim 5, characterized in that: A straight slot-shaped mounting groove (12) is provided on the lower side of the mounting frame (1); the mounting frame (1) is fixed on the aluminum track by screws.

7. The roller device for a Venetian blind according to claim 1, characterized in that: It also includes a bead-pulling head (7) and a reel; one end of the reel is sleeved on the bead-pulling head (7), and the other end is sleeved on the reel; the bead-pulling head (7) has the ability to independently rotate around the axis, so that the bead-pulling head (7) can drive the reel to rotate synchronously.

8. The roller device for a Venetian blind according to claim 7, characterized in that: The bead-pulling head (7) comprises a supporting portion (71) and a rotating portion (72); a coiling tube is sleeved on the outer periphery of the rotating portion (72) to achieve synchronous rotation; the supporting portion (71) and the rotating portion (72) are rotationally connected via a core shaft; a bead is fixedly provided on the supporting portion (71), and the bead and the core shaft are connected via a planetary gear rack.

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