TW202319007A - Synchronous reeling device wherein a first take-up reel rotates together with a main linkage rod and slides along the main linkage rod to synchronously retract and unwind a first linking wire - Google Patents

Abstract

A synchronous reeling device comprises a base shell, two first reeling units, and a main linkage rod. Each first reeling unit includes a first wheel frame, a first take-up reel, and a first linking wire. The first wheel frame is fixed on the base shell, and includes a frame body, a threading hole passing through the frame body, and a screw connection part formed on the frame body. The first take-up reel is supported by the first wheel frame, and has a first thread slot extending helically to be distributed along the axial direction. With the cooperation between the first thread slot and the screw connection part, the first take-up reel moves helically between a retracted position and a lowered position relative to the first wheel frame. One end of the first linking wire is fixed to the first take-up reel and wound along the first thread slot, and the other end thereof passes through the threading hole to be connected to a lower horizontal rail of a curtain module. The first take-up reel rotates together with the main linkage rod, and slides along the main linkage rod to synchronously retract and unwind the first linking wire.

Description

Synchronous winding device

The invention relates to a synchronous coiling device, in particular to a synchronous coiling device for retracting and unwinding a curtain.

The existing curtains that can be stacked up and down, such as venetian blinds, honeycomb blinds (or organ curtains), etc., usually use two traction lines to symmetrically pass through the curtain and connect to the lower rail at the bottom of the curtain. The retractable curtain is adjusted by controlling the movement of the lower horizontal rail up and down. When the lower horizontal rail moves down, the curtain can be lowered and opened, and when the lower horizontal rail moves upward, the curtain can be folded and folded.

However, the general traction wires are respectively wound on the flat rollers. When the traction wires on the left and right sides are retracted, because the positions of the traction wires on the left and right sides are wound on the rollers in different positions, it will cause the curtain to be adjusted to the required height. , often because the lengths of the traction lines on both sides are inconsistent, causing the lower cross rail to be skewed and affecting the appearance.

In addition, the existing honeycomb curtain also has a form that can be opened and closed up and down. The upper end of the curtain of this kind of honeycomb curtain is also equipped with an upper rail, which is connected by two other traction lines to control the upper rail to move up and down. Similarly, the lengths of the left and right traction lines connecting the upper rail will also be inconsistent, which will cause the upper rail to be skewed and affect the appearance.

Therefore, one object of the present invention is to provide a synchronous winding device that enables the pulling wires on both sides to be retracted and unwound synchronously.

Therefore, in some embodiments, the synchronous winding device of the present invention is suitable for connecting a lifting control module and a curtain module to retract the curtain module. The synchronous winding device includes: a base shell, two The first winding unit and a main linkage rod. The base case is elongated along the horizontal direction. The first wire winding units are horizontally spaced apart from each other in the base shell, and each first wire winding unit includes a first wheel frame, a first wire take-up wheel and a first pulling wire. The first wheel frame is fixed on the base shell, and has a frame body, a threading hole passing through the frame body and a screw connection part formed on the frame body. The first take-up wheel is supported by the first wheel frame, and has a first body extending in an axial direction parallel to the horizontal direction, and a first body formed on the outer surface of the first body and extending helically along the axial distribution A thread groove, the first thread groove cooperates with the threaded portion, so that the first wire take-up wheel can move helically between a retracted position and a lowered position relative to the first wheel frame. One end of the first pulling wire is fixed to the first take-up wheel and wound around the first body along the first threaded groove, and the other end passes through the threading hole to connect to the lower rail of the curtain module . The main linkage rod passes through the first wire take-up wheels along the axes of the first wire take-up wheels, and is used to connect the lifting control module to be rotated under the control of the lifting control module. The wire wheel rotates together with the main linkage rod and can slide along the main linkage rod to synchronously retract and release the first pulling wires.

In some embodiments, the frame body has a bottom wall and two side walls perpendicularly extending from the bottom wall and opposite to each other, the threading hole runs through the bottom wall, and the threaded portion protrudes from the inner side of the side walls A plurality of ribs or a plurality of grooves recessed into the opposite inner sides of the side walls.

In some implementations, each first winding unit further includes a buffer member sleeved on the main linkage rod and corresponding to the first wire take-up wheel for the first wire take-up wheel to move to the When lowering the position, lean against it.

In some embodiments, it further includes two second winding units, a pair of linkage rods and a rotation limiting unit, the second winding units are arranged in the base shell at intervals along the horizontal direction, and are respectively adjacent to the On the opposite side of the first winding unit, each second winding unit includes a second wheel frame, a second take-up wheel and a second pulling line, and the second wheel frame has the same structure as the first wheel frame, The second take-up wheel is supported by the second wheel frame, and has a second body extending along the axial direction and a second thread groove formed on the outer surface of the second body and extending helically along the axial direction , the interaction between the second wire take-up wheel and the second wheel frame is the same as that of the first wire winding unit, and one end of the second pulling wire is fixed to the second wire take-up wheel and wound around the second threaded groove The second body, and the other end passes through the threading hole of the second wheel frame to connect the upper rail of the curtain module, the auxiliary linkage rod is hollow and its two ends are connected to the second take-up wheels respectively Wait for the second wire take-up wheel to rotate together with the auxiliary linkage rod and slide along the auxiliary linkage rod to synchronously retract the second pulling wires, and the main linkage rod passes through the second wire take-up wheels and the The auxiliary linkage rod, the rotation limiting unit includes a fixing base and a positioning group, the fixing base is fixed on the base shell, the positioning group is sleeved on the auxiliary linkage rod and cooperates with the fixing base to control the auxiliary linkage rod Forward or reverse.

In some implementations, the fixing seat has a base and a clamping portion, the base defines a limiting groove, the positioning group has a sleeve and a torsion spring, and the sleeve is sleeved on the auxiliary linkage rod And rotate together with the auxiliary linkage rod and be limited in the limit groove, the torsion spring is tightly sleeved on the sleeve, and has a positioning end positioned at the clamping part and connected to the lifting control with a pull wire A pulling end of the module, when the pulling end is pulled, the torsion spring can be released to allow the sleeve and the auxiliary link to rotate freely.

In some implementation aspects, the fixing seat further has a lead part located below the pulling end, and the lead part defines a lead hole for the pull wire to pass through.

In some embodiments, the sleeve has a cylindrical body and a protruding ring around the cylindrical body, the cylindrical body passes through the limiting groove and is partially located outside the limiting groove for the torsion spring to cover It is assumed that the protruding ring part is located in the limiting groove and is limited by the limiting groove.

In some embodiments, each first take-up reel also has a plurality of first protrusions, and each second take-up reel further has a plurality of second protrusions, and the first protrusions protrude from the first The body faces the end surface of the adjacent second take-up wheel and is arranged at intervals along a circumference, and the second protrusions protrude from the end surface of the second body facing the adjacent first line take-up wheel and are aligned with the first The protrusions are matched so that each second take-up wheel can be driven by the adjacent first take-up wheel to rotate together.

In some implementation aspects, the first protrusions and the second protrusions are wedge-shaped, so that each first take-up reel unidirectionally drives the adjacent second take-up reel to rotate.

The present invention has at least the following effects: by synchronously rotating the two first take-up wheels and having the first threaded slots for accommodating the first pull lines, the retractable lengths of the first pull lines are the same, so that the left and right The effect of the synchronous retraction and retraction of the first traction wires prevents the lower horizontal rail from skewing left and right.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to FIG. 1 and FIG. 2 , a first embodiment of a synchronous winding device 100 of the present invention is suitable for connecting a lifting control module 200 and a curtain module 300 to retract the curtain module 300 . The lift control module 200 can be a control module that is generally used for roller blinds to control the retraction and retraction of the curtain 303. In this embodiment, the lift control module 200 adopts the patent application No. No. I739711) patent case discloses the lifting control module, the specific structure of the lifting control module 200 can refer to the specification of the patent case, and will not be described in detail here. In this embodiment, the curtain module 300 is illustrated with a honeycomb curtain that can be opened and closed up and down. The curtain module 300 includes a lower rail 301, an upper rail 302 and a A curtain 303 between the horizontal rail 301 and the lower horizontal rail 301 .

The synchronous wire winding device 100 includes a base shell 1 , two first wire winding units 2 , a main linkage rod 3 , two second wire winding units 4 , a secondary linkage rod 5 and a rotation limiting unit 6 .

The base shell 1 is elongated along the horizontal direction, and in this embodiment, the cross section of the base shell 1 is roughly U-shaped.

The first winding units 2 are arranged in the base shell 1 at intervals along the horizontal direction. Referring also to FIG. 3 to FIG. 5 , each first winding unit 2 includes a first wheel frame 21 , a first take-up wheel 22 , a first pulling line 23 and a buffer member 24 . The first wheel frame 21 is fixed on the base shell 1 , and has a frame body 211 , a threading hole 212 passing through the frame body 211 , and a threaded portion 213 formed on the frame body 211 . In this embodiment, the frame body 211 has a bottom wall 211a and two sidewalls 211b perpendicularly extending from the bottom wall 211a and opposite to each other, the threading hole 212 runs through the bottom wall 211a, and the threaded portion 213 protrudes The sidewalls 211b have a plurality of ribs on the opposite inner sides. The first take-up wheel 22 is supported by the first wheel frame 21, and has a first body 221 extending along an axis D1 parallel to the horizontal direction, and is formed on the outer surface of the first body 221 and extends along the axis D1. A first thread groove 222 extending helically is distributed. The first thread groove 222 cooperates with the threaded portion 213, so that the first take-up wheel 22 can be in a retracted position (as shown in FIG. 2 ) and a lowered position ( As shown in Figure 12), the spiral movement between. In a modified embodiment, the threaded portion 213 can also be a plurality of grooves recessed into the inner sides of the side walls 211b, and the ribs and grooves can be concave-convexly matched with the first threaded groove 222, so that the first threaded groove 222 The effect of a take-up wheel 22 helical movement. One end of the first pulling wire 23 is fixed to the first take-up wheel 22 and wound around the first body 221 along the first threaded slot 222 , and the other end passes through the wire hole 212 to connect to the curtain. The lower rail 301 of the module 300. The main linkage rod 3 passes through the first wire take-up wheels 22 along the axes of the first wire take-up wheels 22 , and is used to connect with the lift control module 200 to be controlled to rotate by the lift control module 200 . The first wire take-up wheels 22 rotate together with the main linkage rod 3 and can slide along the main linkage rod 3 to synchronously retract and retract the first pulling wires 23 .

In detail, the cross section of the main linkage rod 3 is a non-circular rod, specifically a square rod in this embodiment, and the first take-up pulleys 22 are located at the center of the shaft and have a cross-sectional shape that matches the main linkage rod 3 Shaft holes are provided so that the first take-up pulleys 22 can rotate together with the main linkage rod 3 . When the first take-up pulleys 22 and the main linkage rod 3 rotate together, the first threaded grooves 222 interact with the screw joints 213 on the corresponding first wheel frame 21, and are opposed along the helical direction. When the first wheel frame 21 moves, it slides along the main linkage rod 3 at the same time. Taking a single first wire winding unit 2 as an example, the first body 221 has a wire-fixing end 221a and a wire-releasing end 221b. 221a is wound around the first body 221 along the first thread groove 222 toward the wire release end 221b. The length of the first thread groove 222 corresponds to the length of the line segment that the first pulling wire 23 needs to be retracted. When the first wire take-up pulley 22 is at the retracted position, the first pulling wire 23 covers the first thread groove 222 , and the first wheel frame 21 is located at the wire-releasing end 221 b of the first body 221 . When the first wire take-up wheel 22 moves from the retracted position to the lowered position, the first body 221 spirally moves from the wire-releasing end 221b to the wire-fixing end 221a relative to the first wheel frame 21, so that along the The first pulling wire 23 wrapped around the first threaded slot 222 is guided by the threading hole 212 of the first wheel frame 21 , and leaves the first threaded slot 222 sequentially to lower the lower rail 301 . That is to say, when the first wire take-up wheel 22 is at the lowered position, the first wheel frame 21 is located at the line fixing end 221a of the first body 221 (as shown in FIG. 12 ).

In this embodiment, it is defined that the main linkage rod 3 rotates in the indoor direction as forward rotation, and the outdoor direction as reverse rotation. When the main linkage rod 3 rotates forward, the first take-up wheels 22 take up the The first pulling wires 23 , when the main linkage lever 3 reverses, the first take-up pulleys 22 release the first pulling wires 23 . The helical directions of the first thread grooves 222 of the two first take-up pulleys 22 are opposite but the pitches are the same, and when the first pulling wires 23 are released, the left and right first take-up pulleys 22 move oppositely and synchronously to the opposite outer sides respectively. , and when the first pulling wires 23 are wound up, the left and right first wire take-up wheels 22 move synchronously towards the opposite inner sides respectively. The two first pulleys 22 rotate synchronously and have the same pitch to accommodate the first thread grooves 222 of the first pull wires 23, so that the retractable lengths of the first pull wires 23 are the same, so that the left and right The effect of synchronous retraction of the first pulling wires 23 further prevents the lower horizontal rail 301 from skewing left and right.

The buffer member 24 of each first wire winding unit 2 is sheathed on the main linkage rod 3 and is set corresponding to the first wire take-up wheel 22 for abutting against when the first wire take-up wheel 22 moves to the lowered position. In this embodiment, the lifting control module 200 can release the main linkage rod 3 to allow the main linkage rod 3 to reverse freely. At this time, the lower horizontal rail 301 can move down under the action of gravity and pull down the second rails. A pull line 23, so that the first pull lines 23 are lowered and pull the first take-up pulleys 22 and the main linkage rod 3 to reverse, and the first take-up pulleys 22 go from the retracted position to the The lowering position moves. As shown in FIGS. 11 and 12 , when the lower rail 301 moves down to the lowest position where the curtain 303 is fully opened, the first take-up wheels 22 move to the lowered position and respectively lean against The buffer pieces 24 stop the first wire take-up wheels 22 by the buffer pieces 24 to avoid excessive movement of the first wire take-up wheels 22 .

Referring to FIGS. 1 to 4 again, the second wire winding units 4 are disposed in the base shell 1 at intervals along the horizontal direction, and are respectively adjacent to the inner sides of the first wire winding units 2 . Each second wire winding unit 4 includes a second wheel frame 41 , a second wire take-up wheel 42 and a second pulling wire 43 . The structure of the second wheel frame 41 is the same as that of the first wheel frame 21 . The second take-up wheel 42 is supported by the second wheel frame 41, and has a second body 421 extending along the axial direction D1 and formed on the outer surface of the second body 421 and extending helically along the axial direction D1. A second thread groove 422 . The interaction between the second take-up wheel 42 and the second wheel frame 41 is the same as that of the first line winding unit 2, that is, the second line take-up wheel 42 can also be in a retracted position relative to the second wheel frame 41 (As shown in Figure 2) and a lower position (As shown in Figure 14) to move in a spiral. One end of the second pulling wire 43 is fixed to the second take-up wheel 42 and wound around the second body 421 along the second threaded groove 422 , and the other end passes through the threading hole 411 of the second wheel frame 41 for use. To connect the upper rail 302 of the curtain module 300 .

Referring to FIG. 2 , FIG. 5 and FIG. 10 , the secondary linkage rod 5 is hollow and its two ends are respectively connected to the second take-up pulleys 42 . The main linkage rod 3 passes through the second take-up pulleys 42 and the auxiliary linkage rod 5 without linkage. The second take-up pulleys 42 rotate together with the secondary link 5 and can slide along the secondary link 5 . In this embodiment, the hollow portion of the secondary linkage rod 5 has a circular cross-section, allowing the main linkage rod 3 to pass through without rotating together with the main linkage rod 3 . The outer peripheral section of the secondary linkage rod 5 is non-circular. Each second take-up pulley 42 has a large shaft hole 421a and a small shaft hole 421b extending along the axis of the second body 421. The cross-sectional shape of the outer circumference matches to accommodate the secondary linkage rod 5 and enable the second wire take-up wheel 42 to rotate together with the secondary linkage rod 5 . The diameter of the small shaft hole 421b is smaller than the outer diameter of the auxiliary linkage rod 5 and larger than the outer diameter of the main linkage rod 3, so that the auxiliary linkage rod 5 will not pass through the second body 421 and can be used for the main linkage The rod 3 passes without interlocking with the second take-up pulley 42 . As shown in FIG. 5 , when the second take-up pulley 42 is at the retracted position, the end of the auxiliary linkage rod 5 can abut against the end wall 421c of the second body 421 defining the small shaft hole 421b, so as to stop Block this second take-up wheel 42 and move.

Referring to FIG. 6 and FIG. 7 , each first wire take-up wheel 22 also has a plurality of first projections 223 , and each second wire take-up wheel 42 also has a plurality of second projections 423 . The first protrusions 223 protrude from the end surface of the first body 221 facing the adjacent second take-up pulley 42 and are arranged at intervals along a circumference. The second protrusions 423 protrude from the end surface of the second body 421 facing the adjacent first take-up wheel 22 and cooperate with the first protrusions 223, so that each second take-up wheel 42 can be The adjacent first take-up pulleys 22 are driven to rotate together. In this embodiment, the first projections 223 and the second projections 423 are wedge-shaped, so that each first take-up pulley 22 unidirectionally drives the adjacent second take-up pulley 42 to rotate. Specifically, in this embodiment, when the first wire take-up pulleys 22 are driven by the main linkage rod 3 to rotate forward, the first protrusions 223 can push the second protrusions 423 to move in phase. The adjacent second take-up pulley 42 rotates. The overall operational relationship will be described in detail later.

Referring to FIG. 2 , FIG. 8 to FIG. 10 , the rotation limiting unit 6 includes a fixing seat 61 and a positioning group 62 . The fixing seat 61 is fixed on the base shell 1 , the positioning group 62 is sheathed on the auxiliary linkage rod 5 and cooperates with the fixing seat 61 to control the auxiliary linkage rod 5 to rotate forward or reverse. The fixing base 61 has a base body 611 , an engaging portion 612 and a lead portion 613 . The seat body 611 defines a limiting slot 614 . The positioning group 62 has a sleeve 621 and a torsion spring 622 . The sleeve 621 is sleeved on the auxiliary linkage rod 5 to rotate together with the auxiliary linkage rod 5 and is limited in the limiting slot 614 . In this embodiment, the sleeve 621 has a cylindrical body 621a and a protruding ring portion 621b surrounding the cylindrical body 621a. The cylindrical body 621a is sleeved on the auxiliary linkage rod 5 and passes through the limiting groove 614 and is partially located outside the limiting groove 614 for the torsion spring 622 to be sleeved. The cross-sectional shape of the linkage rod 5 matches so that the sleeve 621 can rotate together with the auxiliary linkage rod 5 . The protruding ring portion 621b is located in the limiting groove 614 and is limited by the limiting groove 614 . In this embodiment, the protruding ring portion 621b is located at the center of the two ends of the auxiliary linkage rod 5 , and the fixing seat 61 is located at the center of the base case 1 , so that the auxiliary linkage rod 5 can be maintained at the center. The torsion spring 622 is tightly sleeved on the sleeve 621 , and has a positioning end 622 a positioned on the clamping portion 612 and a pulling end 622 b connected to the lifting control module 200 by a pull wire 201 . When the pulling end 622b is pulled, the torsion spring 622 can be released so that the sleeve 621 and the auxiliary link 5 can rotate freely. The lead portion 613 is located below the pulling end portion 622 b and defines a lead hole 615 for the pull wire 201 to pass through.

In this embodiment, the engaging portion 612 is located below the auxiliary linkage rod 5 and forms an engaging slot 612a for the positioning end portion 622a to be inserted and positioned. The pulling end 622b is located in front of the auxiliary linkage rod 5 and is spaced about 90 degrees from the positioning end 622a. The line segment between the pulling end 622b and the positioning end 622a is spirally wound. When the pulling end 622b When pulled down, it is relatively close to the positioning end 622a, so that the helically wound wire segment can be opened to release the restraint of the sleeve 621, so that the secondary linkage rod 5 can rotate freely. Similarly, when the auxiliary linkage rod 5 and the sleeve 621 rotate forward, the helically wound line segment of the torsion spring 622 can also be opened along the direction of rotation of the sleeve 621, without hindering the auxiliary linkage rod 5 and the sleeve 621. The sleeve 621 rotates forward. That is to say, the torsion spring 622 is only used to prevent the secondary linkage rod 5 and the sleeve 621 from reversing, without affecting the secondary linkage rod 5 and the sleeve 621 from rotating forward. In this embodiment, by using the torsion spring 622 to control the rotation of the auxiliary linkage rod 5 and the sleeve 621 , a quiet effect can be achieved. In a variant embodiment, for example, a ratchet can also be used to control the one-way rotation.

Referring to Fig. 11 to Fig. 14, it has been explained above that in this embodiment, the lifting control module 200 can release the main linkage 3 to freely reverse the main linkage 3 so that the lower cross rail 301 can move downward. The curtain 303 is lowered. As shown in FIGS. 11 and 12 , when the lower rail 301 moves down to the lowest position where the curtain 303 is fully opened, the upper rail 302 can be further lowered. In this embodiment, the lifting control module 200 is also operated to pull the pull wire 201 so that the torsion spring 622 releases the sleeve 621 and the secondary linkage rod 5, so that the secondary linkage rod 5 can freely reverse. At this time The upper horizontal rail 302 moves down under the action of gravity, and pulls the second pull lines 43 downward, so that the second pull lines 43 are lowered and pull the second take-up pulleys 42 and the secondary linkage rod. 5 reverse, and the second take-up wheels 42 move from the retracted position (as shown in FIG. 12 ) to the lowered position (as shown in FIG. 14 ). When wanting to stop the downward movement of the upper horizontal rail 302, as long as the pull wire 201 is released, the secondary linkage rod 5 and the second take-up wheels 42 can be stopped from rotating, and then the second pull wires 43 can be stopped from lowering. When wanting to move the lower horizontal rail 301 upward, the lifting control module 200 can be operated to make the main linkage rod 3 rotate forward, and make the first wire take-up wheels 22 follow the first thread grooves 222 sequentially The first pull lines 23 are reeled, and when the first take-up wheels 22 abut against the adjacent second take-up wheels 42, the second lugs can be pushed by the first lugs 223 block 423 , and the adjacent second wire take-up wheels 42 are rotated, so that the second wire take-up wheels 42 sequentially wind up the second pulling wires 43 along the second thread grooves 422 . The action mode and function of the second take-up wheels 42 are the same as those of the first take-up wheels 22, and can also make the retractable lengths of the second pull lines 43 the same, so that the left and right second pull lines 43 are synchronized. The retractable effect further prevents the upper horizontal rail 302 from tilting left and right.

15 to 17, a second embodiment of the synchronous winding device 100 of the present invention is substantially the same as the first embodiment, but the second winding units 4, the secondary linkage rod 5 and the rotation limiting unit 6 are omitted. , and is applicable to the curtain module 300 without the upper rail 302, that is, the upper end of the curtain 303 of the curtain module 300 is directly connected to the base shell 1, and only the lower rail 301 can move up and down. As shown in FIG. 15 and FIG. 16 , the operation modes of the first winding units 2 and the main linkage rod 3 are the same as those of the first embodiment, and will not be repeated here.

But what is described above is only an embodiment of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

100: Synchronous winding device 1: base shell 2: The first winding unit 21: First round rack 211: frame body 211a: bottom wall 211b: side wall 212: threading hole 213: screw joint 22: The first take-up wheel 221: The first body 221a: fixed wire end 221b: pay-off end 222: The first thread slot 223: The first bump 23: The first lead line 24: Buffer 3: Main connecting rod 4: Second winding unit 41: Second wheel frame 411: threading hole 42: Second take-up wheel 421: The second body 421a: Large shaft hole 421b: small shaft hole 421c: end wall 422: Second thread slot 423: Second bump 43: Second traction line 5: Auxiliary connecting rod 6: Limiting rotation unit 61: fixed seat 611: seat body 612: Locking part 612a: card slot 613: Lead part 614: limit slot 615: lead hole 62: Positioning group 621: Sleeve 621a: barrel 621b: convex ring 622: torsion spring 622a: positioning end 622b: Pull the end 200: Lifting control module 201: pull wire 300: curtain module 301: lower cross rail 302: Upper rail 303: Curtain D1: Axial

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a perspective view of a first embodiment of the synchronous winding device of the present invention connected with a lifting control module and a curtain module; Fig. 2 is a three-dimensional exploded view of the first embodiment; Fig. 3 is an incomplete perspective view of some components of the first embodiment; Fig. 4 is a three-dimensional exploded view corresponding to Fig. 3; Fig. 5 is a sectional view taken along the line V-V in Fig. 3; Fig. 6 is a perspective view similar to Fig. 3, wherein a first take-up wheel is moved to a lowered position; Fig. 7 is another perspective view corresponding to Fig. 6; Fig. 8 is an incomplete perspective view illustrating the rotation limiting unit of the first embodiment; Fig. 9 is a three-dimensional exploded view corresponding to Fig. 8; Fig. 10 is a sectional view taken along the line X-X in Fig. 8; Fig. 11 is a perspective view illustrating the first embodiment when the lower rail of the curtain module is fully lowered; Figure 12 is a fragmentary front view illustrating the first take-up reel in the lowered position of the first embodiment; Fig. 13 is a front view illustrating the lower rail and the upper rail of the curtain module in the lowered state of the first embodiment; Figure 14 is a fragmentary front view illustrating the first take-up reel and the second take-up reel in the lowered position of the first embodiment; Fig. 15 is a perspective view of a second embodiment of the synchronous winding device of the present invention connecting a lifting control module and a curtain module and the lower horizontal rail of the curtain module is in a lowered state; Figure 16 is a fragmentary front view illustrating the first take-up reel of the second embodiment in the stowed position; and Figure 17 is a fragmentary front view illustrating the first take-up reel of the second embodiment in the lowered position.

2: The first winding unit

21: First round rack

211: frame body

211a: bottom wall

211b: side wall

212: threading hole

213: screw joint

22: The first take-up wheel

221: The first body

221a: fixed wire end

221b: pay-off terminal

222: The first thread slot

23: The first lead line

24: Buffer

3: Main connecting rod

4: Second winding unit

41: Second wheel frame

411: threading hole

421: The second body

422: Second thread slot

43: Second traction line

5: Auxiliary connecting rod

D1: Axial

Claims (9)

A synchronous winding device, suitable for connecting a lifting control module and a curtain module to retract the curtain module, the synchronous winding device includes: a base shell extending horizontally and elongated; Two first winding units are arranged in the base case at intervals along the horizontal direction, and each first winding unit includes A first wheel frame is fixed to the base shell, and has a frame body, a threading hole passing through the frame body, and a screw joint formed on the frame body, A first take-up wheel, supported by the first wheel frame, has a first body extending in an axial direction parallel to the horizontal direction, and a first body formed on the outer surface of the first body and extending helically along the axial distribution a first thread groove, the first thread groove cooperates with the threaded part, so that the first wire take-up wheel can move helically between a retracted position and a lowered position relative to the first wheel frame, and A first pulling wire, one end of which is fixed to the first take-up wheel and wound around the first body along the first threaded groove, and the other end passes through the threading hole to connect the lower rail of the curtain module track; and A main linkage rod is passed through the first wire take-up wheels along the axes of the first wire take-up wheels, and is used to connect the lifting control module to be controlled by the lifting control module to rotate, and the first wire take-up The wire take-up wheel rotates together with the main linkage rod and can slide along the main linkage rod to synchronously retract and unwind the first pulling wires. The synchronous winding device according to claim 1, wherein the frame body has a bottom wall and two side walls perpendicularly extending from the bottom wall and opposite to each other, the threading hole runs through the bottom wall, and the threaded portion protrudes from the bottom wall. The plurality of ribs on the opposite inner side of the sidewalls or the plurality of grooves recessed on the opposite inner side of the sidewalls. The synchronous wire winding device according to claim 1, wherein each first winding unit further includes a buffer, which is sleeved on the main linkage rod and set corresponding to the first wire take-up wheel for the first wire take-up When the wire wheel moves to the lowering position, it leans against. The synchronous wire winding device as described in claim 1 further includes two second wire winding units, a pair of linkage rods and a rotation limiting unit, and the second wire winding units are arranged in the base shell at intervals along the horizontal direction, and respectively Adjacent to the relative inner sides of the first winding units, each second winding unit includes a second wheel frame, a second take-up wheel and a second pulling line, the second wheel frame and the first wheel frame The structure is the same, the second take-up wheel is supported by the second wheel frame, and has a second body extending along the axial direction and a second body formed on the outer surface of the second body and extending helically along the axial direction. A threaded wire groove, the interaction between the second wire take-up wheel and the second wheel frame is the same as that of the first wire winding unit, and one end of the second pulling wire is fixed to the second wire take-up wheel and wound along the second threaded wire groove Wrapped around the second body, and the other end passes through the threading hole of the second wheel frame to connect to the upper rail of the curtain module, the auxiliary linkage rod is hollow, and the two ends are respectively connected to the second take-up wires The second take-up pulleys rotate together with the secondary linkage and can slide along the secondary linkage to retract and retract the second pulling lines synchronously. The main linkage passes through the second pulleys without linkage. The wire wheel and the auxiliary linkage rod, the rotation limiting unit includes a fixed seat and a positioning group, the fixed seat is fixed on the base shell, the positioning group is sleeved on the auxiliary linkage rod and cooperates with the fixed seat to control the auxiliary The connecting rod can rotate forward or reversely. The synchronous winding device as described in claim 4, wherein the fixed base has a base and a clamping part, the base defines a limit groove, the positioning group has a sleeve and a torsion spring, and the sleeve is sleeved Rotating with the auxiliary linkage rod and limited to the limit groove, the torsion spring is tightly sleeved on the sleeve, and has a positioning end positioned at the clamping part and a pull The wire is connected to a pulling end of the lifting control module, and when the pulling end is pulled, the torsion spring can be released to allow the sleeve and the auxiliary linkage rod to rotate freely. The synchronous winding device according to claim 5, wherein, the fixing seat further has a lead wire portion located below the pulling end portion, and the lead wire portion defines a lead wire hole for the pull wire to pass through. The synchronous winding device according to claim 5, wherein the sleeve has a cylinder and a protruding ring around the cylinder, the cylinder passes through the limiting groove and is partially located outside the limiting groove to The torsion spring is sheathed, and the protruding ring part is located in the limiting groove and is limited by the limiting groove. The synchronous wire winding device as described in claim 4, wherein each first wire take-up wheel also has a plurality of first protrusions, and each second wire take-up wheel also has a plurality of second protrusions, and the first protrusions Protruding from the end surface of the first body facing the adjacent second take-up wheel and arranged at intervals along a circumference, the second protrusions protrude from the end surface of the second body facing the adjacent first take-up wheel and Cooperating with the first protrusions, each second take-up wheel can be driven by the adjacent first take-up wheel to rotate together. The synchronous wire winding device as described in claim 8, wherein the first protrusions and the second protrusions are wedge-shaped, so that each first wire take-up wheel drives the adjacent second wire take-up wheel to rotate in one direction.

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