TWI774599B - Synchronous winding device - Google Patents

Abstract

A synchronous winding device includes a base shell, two first winding units and a main linkage rod. Each of the first winding units includes a first pulley frame, a first take-up pulley and a first pulling wire. The first wheel frame is fixed on the base shell, and has a frame body, a threading hole penetrating the frame body, and a screw connection portion formed in the frame body. The first take-up pulley is supported by the first pulley frame, and has first thread grooves extending helically distributed along the axial direction. The first thread grooves are matched with the threaded portion so that the first wire The wheel frame moves spirally between the retracted position and the lowered position. One end of the first pulling wire is fixed on the first wire take-up wheel and is wound along the first thread groove, and the other end is passed through the threading hole for connecting the lower horizontal rail of the curtain module. The first wire take-up wheel rotates together with the main linkage rod and can slide along the main linkage rod, so as to synchronously retract the first traction wire.

Description

Synchronous winding device

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

Existing curtains that can be stacked up and down, such as venetian blinds, honeycomb curtains (or organ curtains), etc., usually use two traction lines that are symmetrically installed on the curtains and connect the lower cross rails at the bottom of the curtains. The curtain is adjusted by controlling the lower rail to move up and down. When the lower rail moves down, the curtain can be lowered and opened, and when the lower rail moves up, the curtain can be stacked and folded.

However, in general, the traction lines are wound on the flat rollers, and the traction lines on the left and right sides are in the process of retracting, because the positions of the traction lines on the left and right sides are different on the rollers, causing the curtain to adjust to the required height. , often because the length of the traction lines on both sides is inconsistent, causing the lower 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 honeycomb curtain is also provided with an upper rail, which is connected by two other traction lines to control the up and down movement of the upper rail. Similarly, the lengths of the two 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 wire winding device that enables the pulling wires on both sides to be retracted and unwinded 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 shell is elongated horizontally. The first reeling units are spaced apart from each other in the base shell along the horizontal direction, and each first reeling unit includes a first reel frame, a first reel and a first traction wire. The first wheel frame is fixed on the base shell, and has a frame body, a wire hole passing through the frame body, and a screwing portion formed on the frame body. The first reel 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 direction. A thread groove, the first thread groove is matched with the threaded portion, so that the first thread take-up wheel can helically move relative to the first pulley frame between a retracted position and a lower-down position. One end of the first pulling wire is fixed on the first wire take-up wheel and is wound around the first body along the first thread groove, and the other end passes through the wire hole for connecting to the lower rail of the curtain module . The main linkage rod passes through the first take-up pulleys along the axis of the first take-up pulleys, and is used for connecting the lift control module to be controlled and rotated by the lift control module. The wire wheel rotates together with the main linkage rod and can slide along the main linkage rod, so as to synchronously retract the first traction wires.

In some embodiments, the frame body has a bottom wall and two side walls that extend vertically from the bottom wall and are opposite to each other. The ribs or grooves are recessed into opposite inner sides of the side walls.

In some embodiments, each first reeling unit further includes a buffer, the buffer is sleeved on the main linkage rod and is disposed corresponding to the first take-up wheel, so that the first take-up wheel moves to the Abuts in lowered position.

In some embodiments, two second reeling units, a pair of linkage rods and a rotation limiting unit are further included, the second reeling units are spaced apart from each other in the base case along the horizontal direction, and are respectively adjacent to the On the opposite inner side of the first reeling unit, each second reeling unit includes a second reel, a second take-up reel and a second traction wire, the second reel has the same structure as the first reel, The second reel 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 take-up wheel and the second wheel frame is the same as that of the first winding unit, and one end of the second traction wire is fixed to the second take-up wheel and is wound on the second wire groove along the second thread. The second body, the other end of which passes through the threading hole of the second wheel frame to connect to the upper rail of the curtain module, the auxiliary link rod is hollow and the two ends are respectively connected to the second wire take-up wheels. Waiting for the second take-up pulley to rotate together with the auxiliary linkage rod and to slide along the auxiliary linkage rod to synchronously retract the second traction wires, the main linkage rod passes through the second take-up pulleys and the 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 linkage rod. Forward or reverse.

In some embodiments, the fixing base has a seat body and a clamping portion, the seat body defines a limiting groove, the positioning group has a sleeve and a torsion spring, the sleeve is sleeved on the auxiliary linkage rod It rotates together with the auxiliary linkage rod and is limited to the limiting groove, the torsion spring is tightly sleeved on the sleeve, and has a positioning end positioned on the clamping portion and is connected to the lifting control by a pull wire A pulling end of the module, when the pulling end is pulled, the torsion spring can be released so that the sleeve and the auxiliary linkage rod can rotate freely.

In some embodiments, the fixing base further has a lead portion located below the pulling end portion, and the lead portion defines a lead hole for the pulling wire to pass through.

In some embodiments, the sleeve has a cylindrical body and a convex ring portion protruding 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 provided that the convex ring portion is located in the limiting groove and is limited by the limiting groove.

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

In some embodiments, the first bumps and the second bumps are wedge-shaped, so that each first take-up pulley unidirectionally drives the adjacent second take-up pulley to rotate.

The present invention has at least the following effects: by synchronously rotating the two first reel pulleys and having first thread grooves for accommodating the first pulling wires, the retracting and retracting lengths of the first pulling wires are made the same, so that the left and right The effect of the synchronous retraction and release of the first traction wire 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 designated by the same reference numerals.

Referring to FIG. 1 and FIG. 2 , a first embodiment of the synchronous winding device 100 of the present invention is suitable for connecting a lift control module 200 and a curtain module 300 to retract the curtain module 300 . The lift control module 200 can use a control module generally used for rolling shutters to control the retraction and retraction of the curtain 303. In this embodiment, the lift control module 200 is a control module such as the Republic of China Patent Application No. 110103296 (Announcement). For the lift control module disclosed in the patent case No. I739711), the specific structure of the lift control module 200 can be referred to the specification of the patent case, and will not be described in detail here. In this embodiment, the curtain module 300 is illustrated as 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 is connected to the lower rail A curtain 303 between the horizontal rail 301 and the lower horizontal rail 301 .

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

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

The first winding units 2 are arranged in the base case 1 at intervals along the horizontal direction. Also referring to FIGS. 3 to 5 , each first winding unit 2 includes a first reel frame 21 , a first take-up reel 22 , a first pulling wire 23 and a buffer 24 . The first wheel frame 21 is fixed to the base case 1 and has a frame body 211 , a wire hole 212 penetrating the frame body 211 and a screwing portion 213 formed in the frame body 211 . In this embodiment, the frame body 211 has a bottom wall 211a and two side walls 211b extending perpendicularly from the bottom wall 211a and opposite to each other, the threading hole 212 penetrates the bottom wall 211a, and the screwing portion 213 is protruding The side walls 211b are opposite to the ribs on the inner side. The first reel 22 is supported by the first wheel frame 21, and has a first body 221 extending along an axial direction D1 parallel to the horizontal direction and formed on the outer surface of the first body 221 and along the axial direction D1 A first thread groove 222 extending helically is distributed. The first thread groove 222 is matched with the screwing portion 213 so that the first wire take-up wheel 22 can be in a retracted position (as shown in FIG. 2 ) and a lowered position (as shown in FIG. 2 ). As shown in Figure 12), helical movement. In a modified embodiment, the screwing portion 213 can also be a plurality of grooves recessed into the opposite inner sides of the side walls 211b, and the ribs and grooves can achieve concave and convex fit with the first thread groove 222, so that the first thread groove 222 can be concave and convex. A thread take-up wheel 22 spirally moves. One end of the first pulling wire 23 is fixed to the first wire take-up wheel 22 and is wound around the first body 221 along the first thread groove 222 , and the other end passes through the wire hole 212 for connecting the curtain The lower rail 301 of the module 300 . The main linkage rod 3 passes through the first take-up pulleys 22 along the axis of the first take-up pulleys 22 , and is used for connecting with the lift control module 200 to be controlled and rotated by the lift control module 200 . The first wire take-up pulleys 22 rotate together with the main linkage rod 3 and can slide along the main linkage rod 3 to synchronously retract the first traction wires 23 .

In detail, the cross-section of the main linkage rod 3 is a non-circular rod, and in this embodiment, it is a square rod, and the first take-up pulleys 22 are located at the axis and have a cross-sectional shape that matches the main linkage rod 3 . Axle hole, so that the first wire take-up pulleys 22 can rotate together with the main linkage rod 3 . When the first wire take-up pulleys 22 and the main linkage rod 3 rotate together, the first thread grooves 222 interact with the corresponding screw parts 213 on the first pulley frame 21 to be opposite to each other along the helical direction It moves on the first wheel frame 21 and slides along the main linkage rod 3 at the same time. Taking a single first winding unit 2 as an example, the first body 221 has a wire-fixing end 221a and a pay-off end 221b. 221a is wound around the first body 221 along the first thread groove 222 toward the pay-off end 221b. The length of the first thread groove 222 corresponds to the length of the wire segment required to be rolled up by the first pulling wire 23 . When the first wire take-up wheel 22 is in the retracted position, the first pulling wire 23 fills the first thread groove 222 , and the first wheel frame 21 is positioned at the pay-off end 221 b of the first body 221 . When the first take-up pulley 22 moves from the retracted position to the lowered position, the first body 221 spirally moves from the pay-off end 221b relative to the first pulley 21 to the wire-fixing end 221a, so that the The first traction wire 23 wound around the first thread groove 222 is guided by the threading hole 212 of the first wheel frame 21 and leaves the first thread groove 222 in sequence to lower the lower rail 301 . That is to say, when the first wire take-up wheel 22 is in the lowered position, the first wheel frame 21 is positioned at the wire-fixing end 221a of the first body 221 (as shown in FIG. 12 ).

In this embodiment, it is defined that the rotation of the main linkage rod 3 in the indoor direction is forward rotation, and the rotation of the main linkage rod 3 in the outdoor direction is defined as reverse rotation. For the first pulling wire 23 , when the main linkage rod 3 is reversed, the first wire take-up pulleys 22 release the first pulling wire 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 winding up the first traction wires 23 , the left and right first wire take-up wheels 22 move toward the inner side synchronously. By synchronously rotating the two first wire take-up pulleys 22 and having the first thread grooves 222 with the same pitch to accommodate the first pulling wires 23, the retracting and retracting lengths of the first pulling wires 23 are made the same, so that the left and right The effect of synchronizing retraction and retraction of the first pulling wire 23 prevents the lower horizontal rail 301 from being skewed left and right.

The buffer member 24 of each first winding unit 2 is sleeved on the main linkage rod 3 and is disposed corresponding to the first take-up wheel 22 for abutting when the first take-up wheel 22 moves to the lowering position. In this embodiment, the elevating control module 200 can release the main linkage rod 3 to make the main linkage rod 3 reverse freely. At this time, the lower rail 301 can be moved downward by gravity and pull down the first A pulling wire 23, so that the first pulling wire 23 is lowered and pulls the first wire take-up pulleys 22 and the main linkage rod 3 to reverse, and the first wire take-up pulleys 22 go from the retracted position to the The lowering position moves. As shown in FIG. 11 and FIG. 12 , when the lower rail 301 moves downward to the lowermost position where the curtain 303 is fully opened, the first take-up pulleys 22 move to the lower position and abut against the The buffer members 24 stop the first wire take-up pulleys 22 by the buffer members 24 to avoid excessive movement of the first wire take-up pulleys 22 .

Referring to FIGS. 1 to 4 again, the second reeling units 4 are spaced apart from each other in the base case 1 along the horizontal direction, and are respectively adjacent to opposite inner sides of the first reeling units 2 . Each second winding unit 4 includes a second pulley frame 41 , a second take-up pulley 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 reel 42 is supported by the second wheel frame 41 and has a second body 421 extending along the axial direction D1 and a second body 421 formed on the outer surface of the second body 421 and extending along the axial direction D1 helically. A second thread slot 422 . The interaction between the second reel 42 and the second reel 41 is the same as that of the first reel unit 2 , that is, the second reel 42 can also be in a retracted position relative to the second reel 41 (As shown in Figure 2) and the lower position (as shown in Figure 14) spiral movement. One end of the second pulling wire 43 is fixed to the second wire take-up wheel 42 and is wound around the second body 421 along the second thread groove 422 , and the other end passes through the wire 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 auxiliary link rod 5 is hollow and two ends are respectively connected to the second wire take-up pulleys 42 . The main linkage rod 3 passes through the second wire take-up pulleys 42 and the auxiliary linkage rod 5 without any linkage. The second wire take-up pulleys 42 rotate together with the auxiliary linkage rod 5 and can slide along the auxiliary linkage rod 5 . In this embodiment, the hollow section of the auxiliary link rod 5 is circular in cross section, which can be passed through by the main link rod 3 without rotating together with the main link rod 3 . The outer peripheral cross section of the auxiliary link rod 5 is non-circular. Each second reel 42 has a large shaft hole portion 421a and a small shaft hole portion 421b extending along the axis of the second body 421 . The cross-sectional shapes of the outer circumferences are matched to accommodate the auxiliary linkage rod 5 and enable the second wire take-up wheel 42 to rotate together with the auxiliary linkage rod 5 . The diameter of the small shaft hole portion 421b is smaller than the outer diameter of the auxiliary link rod 5 and larger than the outer diameter of the main link rod 3, so that the auxiliary link rod 5 does not pass through the second body 421 and can be used for the main link rod. The rod 3 passes through without interlocking with the second take-up pulley 42 . As shown in FIG. 5 , when the second reel 42 is in the retracted position, the end of the auxiliary link rod 5 can abut against the end wall 421c of the second body 421 defining the small shaft hole 421b to stop the Block the movement of the second wire take-up wheel 42 .

Referring to FIGS. 6 and 7 , each of the first wire take-up pulleys 22 further has a plurality of first protrusions 223 , and each of the second wire take-up pulleys 42 further has a plurality of second protrusions 423 . The first protrusions 223 protrude from the end surface of the first body 221 facing the adjacent second take-up pulleys 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 pulleys 22 and cooperate with the first protrusions 223 so that each second take-up pulley 42 can receive The adjacent first wire take-up wheels 22 are driven to rotate together. In this embodiment, the first bumps 223 and the second bumps 423 are wedge-shaped, so that each first take-up pulley 22 drives the adjacent second take-up pulley 42 to rotate in one direction. Specifically, in this embodiment, when the first reel 22 is driven by the main linkage rod 3 to rotate forward, the first bumps 223 can push the second bumps 423 to drive the phase The adjacent second reel 42 rotates. The overall operation relationship will be described in detail later.

Referring to FIGS. 2 , 8 to 10 , the rotation limiting unit 6 includes a fixing base 61 and a positioning group 62 . The fixing seat 61 is fixed on the base shell 1 , and the positioning group 62 is sleeved on the auxiliary link rod 5 and cooperates with the fixing seat 61 to control the auxiliary link rod 5 to rotate forwardly or reversely. The fixing base 61 has a base 611 , a clamping portion 612 and a lead portion 613 . The seat body 611 defines a limiting groove 614 . The positioning group 62 has a sleeve 621 and a torsion spring 622 . The sleeve 621 is sleeved on the auxiliary link rod 5 , rotates together with the auxiliary link rod 5 , and is limited to the limiting groove 614 . In this embodiment, the sleeve 621 has a cylindrical body 621a and a convex ring portion 621b protruding around 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 link rod 5 is matched, so that the sleeve 621 can rotate together with the auxiliary link 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 convex ring portion 621b is located at the center of both ends of the auxiliary link rod 5, and the fixing seat 61 is located at the center of the base shell 1, so that the auxiliary link 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 lift control module 200 by a pulling 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 rod 5 can rotate freely. The lead portion 613 is located below the pull end portion 622b 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 secondary linkage rod 5 and forms a engaging slot 612a for the positioning end portion 622a to be inserted and positioned. The pulling end portion 622b is located in front of the auxiliary linkage rod 5 and is spaced about 90 degrees from the positioning end portion 622a. The line segment between the pulling end portion 622b and the positioning end portion 622a is spirally wound. When the pulling end portion 622b When it is 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, thereby enabling the auxiliary linkage rod 5 to rotate freely. Similarly, when the auxiliary link rod 5 and the sleeve 621 are rotating forward, the coiled wire segment of the torsion spring 622 can also be opened along the rotation direction of the sleeve 621, and will not interfere with the auxiliary link rod 5 and the sleeve 621. The sleeve 621 is rotated forward. That is to say, the torsion spring 622 is only used to prevent the auxiliary link rod 5 and the sleeve 621 from rotating in reverse, and does not affect the forward rotation of the auxiliary link rod 5 and the sleeve 621 . In this embodiment, the torsion spring 622 controls the rotation of the auxiliary link rod 5 and the sleeve 621 to achieve a mute effect. In an alternative embodiment, one-way rotation may also be controlled using, for example, a ratchet.

Referring to FIG. 11 to FIG. 14 , as described above, in this embodiment, the lift control module 200 can release the main linkage rod 3 to make the main linkage rod 3 rotate freely, so as to move the lower rail 301 downward The curtain 303 is lowered. As shown in FIG. 11 and FIG. 12 , when the lower rail 301 moves downward to the lowest position where the curtain 303 is fully opened, the upper rail 302 can be further lowered. In this embodiment, the lift control module 200 is also operated to pull the pull wire 201 so that the torsion spring 622 releases the sleeve 621 and the auxiliary linkage rod 5, so that the auxiliary linkage rod 5 can be freely reversed. The upper rail 302 moves downward under the action of gravity, and pulls the second pulling wires 43 downward, so that the second pulling wires 43 are lowered and pulls the second take-up pulleys 42 and the auxiliary linkage rod 5 is reversed, and the second take-up pulleys 42 move from the retracted position (as shown in FIG. 12 ) to the lowered position (as shown in FIG. 14 ). To stop the downward movement of the upper rail 302 , just release the pulling wire 201 to stop the rotation of the auxiliary linkage rod 5 and the second wire take-up pulleys 42 , thereby stopping the lowering of the second pulling wires 43 . When the lower horizontal rail 301 is to be moved upward, the lift control module 200 can be operated to make the main linkage rod 3 rotate forward, and the first wire take-up pulleys 22 can be made to follow the first thread grooves 222 in sequence The first traction wires 23 are reeled, and when the first take-up pulleys 22 abut against the adjacent second take-up pulleys 42 , the second bumps can be pushed by the first bumps 223 The block 423 is moved, and the adjacent second take-up pulleys 42 are rotated together, so that the second take-up pulleys 42 take up the second pulling wires 43 in sequence along the second thread grooves 422 . The actuation methods and functions of the second take-up pulleys 42 are the same as those of the first take-up pulleys 22 , and can also make the retraction and retraction lengths of the second pulling wires 43 the same, so as to synchronize the left and right second pulling wires 43 . Due to the retractable and retractable effect, the upper horizontal rail 302 will not be skewed left and right.

Referring to FIGS. 15 to 17 , a second embodiment of the synchronous wire winding device 100 of the present invention is substantially the same as the first embodiment, but the second wire winding units 4 , the auxiliary linkage rod 5 and the rotation limiting unit 6 are omitted. , and is suitable for 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.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

100: Synchronous winding device 1: base shell 2: The first winding unit 21: First round rack 211: Frame 211a: Bottom wall 211b: Sidewall 212: Threading hole 213: Screw part 22: The first take-up wheel 221: The first body 221a: Fixed line end 221b: Pay-off end 222: The first thread groove 223: First bump 23: First Pull Line 24: Buffer 3: Main linkage rod 4: The second winding unit 41: Second Wheel Rack 411: Threading hole 42: The second take-up wheel 421: Second Body 421a: Large shaft hole 421b: Small shaft hole 421c: End Wall 422: Second thread groove 423: Second bump 43: Second Pull Wire 5: Deputy linkage rod 6: Rotation limit unit 61: Fixed seat 611: Seat 612: Card part 612a: Card slot 613: Lead part 614: Limit slot 615: Lead hole 62: Positioning group 621: Sleeve 621a: Cylinder 621b: Convex part 622: Torsion spring 622a: Positioning end 622b: Pull end 200: Lifting control module 201: Pull Wire 300: Curtain Module 301: Lower rail 302: Upper rail 303: Curtain D1: Axial

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

211a: Bottom wall

211b: Sidewall

212: Threading hole

213: Screw part

22: The first take-up wheel

221: The first body

221a: Fixed line end

221b: Pay-off end

222: The first thread groove

23: First Pull Line

24: Buffer

3: Main linkage rod

4: The second winding unit

41: Second Wheel Rack

411: Threading hole

421: Second Body

422: Second thread groove

43: Second Pull Wire

5: Deputy linkage rod

D1: Axial

Claims (8)

A synchronous winding device is suitable for connecting a lifting control module and a curtain module to retract the curtain module. The synchronous winding device comprises: a base shell extending in a horizontal direction in a long shape; two first The wire winding units are arranged in the base shell spaced apart from each other along the horizontal direction. Each first wire winding unit includes a first wheel frame, which is fixed to the base shell and has a frame body, a wire hole passing through the frame body, and a A first reel, supported by the first wheel frame, has a first body extending in an axial direction parallel to the horizontal direction and formed on the outer surface of the first body at a screwed portion of the frame body A first thread groove is distributed along the axial direction, and the first thread groove is matched with the screw connection part, so that the first wire take-up wheel can be in a retracted position relative to the first wheel frame and a first pulling wire, one end of which is fixed to the first wire take-up wheel and is wound around the first body along the first thread groove, and the other end passes through the threading hole for to connect the lower horizontal rail of the curtain module; a main linkage rod is passed through the first take-up pulleys along the axis of the first take-up pulleys, and is used to connect the lift control module to receive The lifting control module controls the rotation, the first reeling wheels rotate together with the main linkage rod and can slide along the main linkage rod, so as to synchronously retract the first traction wires; two second reeling units, along the The horizontal directions are spaced apart from each other in the base shell, and are respectively adjacent to opposite inner sides of the first reeling units. Each second reeling unit includes a second reel frame, a second reel and a first reel. Two traction wires, the second pulley has the same structure as the first pulley, the second take-up pulley is supported by the second pulley, and has a second body extending along the axial direction and formed on the first pulley A second thread groove is distributed on the outer surface of the body and extends along the axial direction. The interaction between the second take-up wheel and the second wheel frame is the same as that of the first winding unit. One end of the second pulling wire is fixed is wound on the second body along the second thread groove, and the other end passes through the threading hole of the second wheel frame to connect to the upper rail of the curtain module; a The auxiliary linkage rod is hollow and the two ends are respectively connected to the second wire take-up pulleys. The second wire take-up pulleys rotate together with the auxiliary linkage rod and can slide along the auxiliary linkage rod, so as to synchronously retract the second wire take-up pulleys. a traction wire, the main interlocking rod passes through the second reel pulleys and the auxiliary interlocking rod without interlocking; and a rotation limiting unit including a fixing seat and a positioning group, the fixing seat is fixed on the base shell, the The positioning group is sleeved on the auxiliary linkage rod and cooperates with the fixed seat to control the auxiliary linkage rod to rotate forwardly or reversely. The synchronous wire winding device according to claim 1, wherein the frame body has a bottom wall and two side walls that extend vertically from the bottom wall and are opposite to each other, the threading hole penetrates the bottom wall, and the screwing portion protrudes from the bottom wall. A plurality of ribs on the opposite inner side of the side walls or a plurality of grooves recessed into the opposite inner sides of the side walls. The synchronous reeling device according to claim 1, wherein each first reeling unit further includes a buffer, the buffer is sleeved on the main linkage rod and is disposed corresponding to the first reel for the first reel. The pulley abuts when it moves to this lowering position. The synchronous reeling device according to claim 1, wherein the fixing base has a seat body and a clamping part, the seat body defines a limiting groove, the positioning group has a sleeve and a torsion spring, the sleeve is sleeved on the auxiliary linkage rod and rotates together with the auxiliary linkage rod and is limited to the a limiting slot, the torsion spring is tightly sleeved on the sleeve, and has a positioning end positioned on the clamping portion and a pulling end connected with the lift control module by a pull wire, the pulling end When being pulled, the torsion spring can be loosened so that the sleeve and the auxiliary link rod can rotate freely. The synchronous wire winding device according to claim 4, wherein the fixing base further has a lead portion located below the pulling end portion, and the lead portion defines a lead hole for the pulling wire to pass through. The synchronous wire winding device according to claim 4, wherein the sleeve has a cylindrical body and a convex ring portion protruding around the cylindrical body, and the cylindrical body passes through the limiting groove and is partially located outside the limiting groove For the torsion spring to be sleeved, the convex ring portion is located in the limiting groove and is limited by the limiting groove. The synchronous winding device according to claim 1, wherein each first take-up wheel further has a plurality of first bumps, each second take-up wheel further has a plurality of second bumps, and the first bumps Protruding from the end face of the first body facing the adjacent second take-up pulley and arranged at intervals along a circumference, the second bumps protrude from the end face of the second body facing the adjacent first wire take-up pulley and In cooperation with the first protrusions, each second wire take-up wheel can be driven by the adjacent first wire take-up wheel to rotate together. The synchronous winding device according to claim 7, wherein the first bumps and the second bumps are wedge-shaped, so that each first take-up pulley unidirectionally drives the adjacent second take-up pulley to rotate.

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