CN209586221U - Cord fabric winding and unwinding device - Google Patents

Abstract

The utility model relates to the technical field of winding devices, in particular to a curtain retracting device, which includes a reel tube for winding the cord, one end of the reel tube is provided with a reel connector, and the other end of the reel tube is provided with a Based on the rotation control structure of scroll spring contraction and release, the reel tube can be rotatably installed in the middle of the reel connector and the rotation control structure. The rotation control structure includes a control mechanism housing, and the control mechanism housing is installed with The rotating wheel driven by the scroll tube, the central shaft and the scroll spring sheathed on the central shaft, the central shaft is located below the rotating wheel, and the outermost end of the scroll spring is connected to one side of the rotating wheel. When in use, the user gently pulls the lower end of the curtain by hand, and the curtain drives the reel tube to rotate, and then turns the wheel to make the scroll spring shrink. As long as you stop pulling the curtain, you can accurately, smoothly and easily stop at the position you want to stop without returning Bomb, easy to use and operate.

Description

A curtain retracting device

technical field

The utility model relates to the technical field of winding devices, in particular to a curtain retracting and unwinding device.

Background technique

There are many kinds of roller blind devices commonly used at present. The commonly used one is to pull the runner with a rope with a small ball, and the runner drives the reel to roll up and put down the curtain cloth; this type of curtain structure is composed of a curtain body, a transmission group and a hand rope. Composition, when the user operates the hand-drawn rope, due to the small friction surface of the rope body, it is easy to cause hand scratches when contacting the force, and when the hand-drawn rope wants to adjust the unfolding or folding position of the curtain, once the hand pulls If the pull-down force of the rope is too large or the release speed is too fast, the curtain cannot be positioned at the proper position desired by the user, so that repeated adjustments are required in operation, causing inconvenience in use.

Utility model content

The utility model provides a curtain retracting device aiming at the problems of the prior art.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A curtain retracting device, comprising a reel tube for winding the curtain, one end of the reel tube is provided with a reel connector, and the other end of the reel tube is provided with a rotation control structure based on the contraction and release of a scroll spring. The reel tube can be rotatably installed in the middle of the reel connector and the rotation control structure. The rotation control structure includes a control mechanism housing. A rotating wheel driven by the reel tube, a central shaft and a sleeve are installed in the control mechanism housing. A spiral spring on a central shaft, the central shaft is located below the rotating wheel, and the outermost end of the spiral spring is connected to one side of the rotating wheel.

Wherein, a fixed crossbeam is also provided between the reel connector and the rotation control structure, the control mechanism housing includes a left casing and a right casing, and one side of the left casing is combined with the fixed crossbeam , the other side of the left housing is combined with the right housing to form an accommodating space; the right housing is provided with a positioning column and a fixed connecting column for installing the rotating wheel and the central shaft, and the positioning column, the fixed connecting column and the The right housing is integrally formed.

Further, an insertion slot is provided on the fixed crossbeam, and an insertion plate for cooperating with the insertion slot is respectively provided on the reel connector and the left housing.

Wherein, the side where the reel tube is connected to the reel connector is inserted with a first plug-in plastic part, and the first plug-in plastic part is protrudingly provided with a rotating cylinder, and the center of the reel connector is correspondingly provided with a circle. hole, and the rotating cylinder is inserted into the circular hole.

Further, the outer wall of the first plug-in plastic part is formed with plug-in ribs that are compatible with the inner wall of the reel tube, and the first plug-in plastic part is provided with a limit gap for preventing self-rotation; The inside of the reel tube is provided with a limit strip matching the limit notch.

Wherein, a cord insertion groove is formed between the limiting bar and the reel tube, and the reel tube is provided with a strip-shaped opening for the cord to pass through at the corresponding cord insertion groove.

Wherein, the middle of the rotating wheel is provided with a square hole for connecting the reel tube, and the side of the reel tube corresponding to the connection of the rotating wheel is inserted with a second plug-in plastic part, and the second plug-in plastic part protrudes A square connection block is provided, and the square connection block is inserted into the square hole.

The beneficial effects of the utility model:

The utility model provides a curtain retracting device, which includes a reel tube for winding the curtain, one end of the reel tube is provided with a reel connector, and the other end of the reel tube is provided with a rotation mechanism based on the contraction and release of the scroll spring. Control structure, the reel tube can be rotatably installed in the middle of the reel connector and the rotation control structure, the rotation control structure includes a control mechanism housing, and a rotating wheel driven by the reel tube, a center The shaft and the scroll spring sleeved on the central shaft, the central shaft is located under the running wheel, and the outermost end of the scroll spring is connected to one side of the running wheel. When in use, gently pull the lower end of the curtain with your hand, the curtain will drive the reel tube to rotate, and then turn the wheel to make the scroll spring shrink. As long as you stop pulling the curtain, you can accurately, smoothly and easily stop at the position you want to stop without rebounding. Easy to use and operate.

Description of drawings

Fig. 1 is an exploded view of the structure of a curtain retracting device of the present invention.

Fig. 2 is an exploded view of the rotation control structure in the utility model.

Fig. 3 is a schematic structural diagram of the first plug-in plastic part in the present invention.

Fig. 4 is a schematic structural view of the reel tube in the present invention.

Reference numerals in Figures 1 to 4 include:

1—fixed beam 2—reel tube 3—reel connector

4—left housing 5—right housing 6—rotating wheel

7—Central shaft 8—Scroll spring 9—Square hole

10—positioning column 11—fixed connecting column 12—socket slot

13—plug board 14—first plug plastic part 15—rotating cylinder

16—Round hole 17—Insertion rib 18—Limiting gap

19—limiting strip 20—plinth insertion groove.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model. Below in conjunction with accompanying drawing, the utility model is described in detail.

A curtain retracting device provided by the utility model includes a scroll tube 2 for winding the curtain, one end of the scroll tube 2 is provided with a scroll connector 3, and the other end of the scroll tube 2 is provided with a scroll spring The rotation control structure of contraction and release, the reel tube 2 can be rotatably installed in the middle of the reel connector 3 and the rotation control structure, the rotation control structure includes a control mechanism housing, and the control mechanism housing is installed with a reel The rotating wheel 6 driven by the tube 2, the central shaft 7 and the scroll spring 8 sleeved on the central shaft 7, the central shaft 7 is located below the rotating wheel 6, and the outermost end of the scroll spring 8 is connected to the rotating One side of the wheel 6 is connected. When in use, gently pull the lower end of the curtain by hand, and the curtain drives the reel tube 2 to rotate; as long as the curtain is pulled, the rotating wheel 6 immediately rotates and pulls the scroll spring 8, so that the scroll spring 8 produces a reverse force, according to The principle of interaction force, as long as you stop pulling the curtain, you can stop at the position you want to stop accurately, smoothly and easily without rebounding; there is no need to set up a hand-drawn rope or an electric lifting structure, and the curtain can be realized by gently pulling the end of the curtain by hand. Retractable, easy to use and operate, low production cost.

In the present utility model, a fixed crossbeam 1 is also provided between the reel connector 2 and the rotation control structure, and the control mechanism housing includes a left housing 4 and a right housing 5, and the left housing 4 One side of the left housing 4 is combined with the fixed beam 1, and the other side of the left housing 4 is combined with the right housing 5 to form an accommodating space; The post 10 and the fixed connection post 11 are formed integrally with the right housing 5 . The rotating wheel 6, the central shaft 7 and the scroll spring 8 are all positioned and installed on the positioning column 10, and the left housing 4 and the right housing 5 are locked and fixed as one with screws to form the rotation control structure.

Further, the fixed crossbeam 1 is provided with a plug-in slot 12, and the reel connector 3 and the left housing 4 are respectively provided with plug-in plates 13 for cooperating with the plug-in slot 12. The socket board 13 is inserted into the socket slot 12, and then tightened with screws to form a mounting bracket, and the product assembly is simple and quick.

In the present utility model, the side where the reel tube 2 is connected to the reel connector 3 is inserted with a first plug-in plastic part 14, and the first plug-in plastic part 14 protrudes from a rotating cylinder 15, and the reel connection A circular hole 16 is correspondingly provided at the center of the member 3 , the rotating cylinder 15 is inserted into the circular hole 16 , and the reel tube 2 rotates relative to the reel connecting member 3 through the rotating cylinder 15 . Further, the outer wall of the first plug-in plastic part 14 is formed with a plug-in rib 17 that is compatible with the inner wall of the reel tube 2, and the first plug-in plastic part 14 is provided with a stop for preventing self-rotation. Notch 18. When in use, the first plug-in plastic part 14 is inserted into the port of the reel tube 2, and the plug-in ribs 17 are in interference fit with the inner wall of the reel tube 2, and the fixed installation is simple and convenient; the inside of the reel tube 2 A limit bar 19 matching the limit notch 18 is provided. When the first plug-in plastic part 14 is combined and installed, the limit notch 18 and the limit bar 19 can be inserted correspondingly to be accurately installed, which is convenient for quick assembly and insertion , and effectively prevent the reel tube 2 from rotating.

Still further, a cord insertion groove 20 is formed between the limiting bar 19 and the reel tube 2 , and the reel tube 2 is provided with a strip-shaped opening for the cord to pass through at the corresponding cord insertion groove 20 . When installing the curtain, insert the installation end of the curtain from one side of the curtain insertion groove 20, without disassembling the installed first plug-in plastic part 14, which is convenient for users to replace different curtains.

In the present utility model, a square hole 9 for connecting the reel tube 2 is provided in the middle of the rotating wheel 6, and the side of the reel tube 2 corresponding to the connection of the rotating wheel 6 is inserted with a second plug-in plastic part (in Fig. not marked in ), the structure of the second plug-in plastic part is basically the same as that of the first plug-in plastic part 14, the difference is that a square connection block protrudes from the second plug-in plastic part, so The square connection block is inserted into the square hole 9 to complete the combined connection between the rotating wheel 6 and the reel tube 2, and synchronous power transmission can be realized during the rotation.

The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above with the preferred embodiment, it is not used to limit the utility model. Anyone who is familiar with the utility model Professional technicians, without departing from the scope of the technical solution of the present utility model, should use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not deviate from the technical solution of the present utility model, according to this The utility model technology refers to any simple modification, equivalent change and modification made to the above embodiments, which all belong to the scope of the utility model technical solution.

Claims (7)

1. a kind of cord draw off gear, it is characterised in that: including the roller tube for winding cord, one end of the roller tube is set It is equipped with spool connector, the other end of roller tube is provided with the rotation control means for shrinking and discharging based on scroll spring, described Roller tube is pivotally mounted to the centre of spool connector and rotation control means, and the rotation control means include control machine Structure shell is equipped with the rotating wheel driven by roller tube, central axis in the control mechanism shell and is sheathed on central axis Scroll spring, the central axis are located at the lower section of rotating wheel, and the outmost turns end of the scroll spring and the side of rotating wheel connect It connects.

2. a kind of cord draw off gear according to claim 1, it is characterised in that: the spool connector and rotation control It is additionally provided between structure and is fixedly mounted with crossbeam, the control mechanism shell includes left shell and right shell body, the side of the left shell Connection is combined with crossbeam is fixedly mounted with, the other side of left shell is combined with right shell body constitutes accommodating space；It is provided on the right shell body For installing the positioning column of rotating wheel, central axis and being fixedly connected with column, the positioning column is fixedly connected with column and right shell body one Molding.

3. a kind of cord draw off gear according to claim 2, it is characterised in that: described be fixedly mounted on crossbeam is provided with one Inserting groove is separately provided for the plugboard being coupled with inserting groove on the spool connector and left shell.

4. a kind of cord draw off gear according to claim 1, it is characterised in that: the roller tube and spool connector connect The side connect is fitted with the first grafting plastic parts, and the first grafting plastic parts protrusion is provided with rotating cylindrical, spool connector Center at be correspondingly provided with circular hole, in the rotating cylindrical insertion circular hole.

5. a kind of cord draw off gear according to claim 4, it is characterised in that: the outer wall of the first grafting plastic parts On be formed with grafting rib compatible with spool inside pipe wall, and be provided on the first grafting plastic parts for preventing autorotation Spacing breach, the roller tube are internally provided with positive stop strip compatible with spacing breach.

6. a kind of cord draw off gear according to claim 5, it is characterised in that: shape between the positive stop strip and roller tube At there is a cord inserting groove, and roller tube offers the strip opening being pierced by for cord at corresponding cord inserting groove.

7. a kind of cord draw off gear according to claim 4, it is characterised in that: the intermediate setting of the rotating wheel is useful In the square hole of connection roller tube, the side that the roller tube corresponds to rotating wheel connection is fitted with the second grafting plastic parts, described Second grafting plastic parts, which protrudes above, is provided with rectangular link block, in the rectangular link block insertion square hole.