CN110359833B - Double-layer rope winder for exposed pull rope-free curtain - Google Patents
Double-layer rope winder for exposed pull rope-free curtain Download PDFInfo
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- CN110359833B CN110359833B CN201810250753.6A CN201810250753A CN110359833B CN 110359833 B CN110359833 B CN 110359833B CN 201810250753 A CN201810250753 A CN 201810250753A CN 110359833 B CN110359833 B CN 110359833B
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- cord
- shaft
- winding wheel
- rope
- gear
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/326—Details of cords, e.g. buckles, drawing knobs
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Wind Motors (AREA)
- Blinds (AREA)
Abstract
The invention relates to a double-layer rope winder, which comprises a driving unit and a rope winding unit arranged below the driving unit, wherein the driving unit is provided with an upper base, two coil spring gears and a coil spring, the two coil spring gears are rotatably arranged on the upper base and are mutually meshed, the coil spring is connected with the two coil spring gears, the rope winding unit is provided with a lower base, two rope winding wheels and two lifting transmission ropes, the lower base is connected with the upper base of the driving unit, the two rope winding wheels are synchronously and rotatably arranged on the lower base and respectively coaxially correspond to the coil spring gears of the driving unit, the two lifting transmission ropes are respectively connected with the two rope winding wheels, and in addition, a transmission shaft is used for connecting the two coil spring gears and the rope winding wheels which vertically correspond to each other so that the two rope winding wheels can synchronously rotate. Therefore, the double-layer rope winder can shorten the whole length to achieve the effect of miniaturization.
Description
Technical Field
The invention relates to a curtain, in particular to a double-layer rope winder for a rope-pulling type curtain without an exposed part.
Background
Generally, the non-exposed pull-cord type curtain mainly uses a cord winder arranged in an upper beam to wind a lifting transmission cord, and the lifting transmission cord is connected with a lower beam, so that the lower beam gradually rises relative to the upper beam in the winding process of the lifting transmission cord, and blades are stacked together by the upward movement of the lower beam, thereby achieving the purpose of folding the curtain.
The cord winder has no problem in use for the common-size window curtains, but is easy to interfere with other components due to the length of the cord winder when the cord winder is matched with a window curtain with a special size (such as a narrow-long window curtain). Therefore, it is an urgent need to solve the problem of shortening the length of the rope winder without affecting the transmission effect of the rope winder.
Disclosure of Invention
The invention mainly aims to provide a double-layer rope winder for an exposed pull rope-free curtain, which can reduce the length of the double-layer rope winder to achieve a miniaturized effect.
In order to achieve the above objective, the present invention provides a double-layer rope winder comprising a driving unit, a rope winding unit and a first transmission shaft. The driving unit is provided with an upper base, a first coil spring gear, a second coil spring gear and a coil spring, wherein the first and second coil spring gears are rotatably arranged on the upper base and are meshed with each other, and the coil spring is connected with the first and second coil spring gears; the rope winding unit is provided with a lower base, a first rope winding wheel, a second rope winding wheel and two lifting transmission ropes, wherein the lower base is connected with the upper base of the driving unit, the first and second rope winding wheels can be synchronously and rotatably arranged on the lower base and respectively coaxially correspond to a first and second coil spring gears of the driving unit, and one ends of the two lifting transmission ropes are respectively connected with the first and second rope winding wheels, so that the two lifting transmission ropes can be wound on the first and second rope winding wheels or released from the first and second rope winding wheels by the rotation of the first and second rope winding wheels connected with the two lifting transmission ropes; the first transmission shaft is connected with the first spring gear of the driving unit and the first rope winding wheel of the rope winding unit, so that the first spring gear and the first rope winding wheel can synchronously rotate.
Therefore, the double-layer rope winder adopts the way of stacking the driving unit and the rope winding unit up and down, and utilizes the first transmission shaft to drive the driving unit to drive the rope winding unit to synchronously operate, so that the whole length can be shortened under the condition of not influencing the transmission effect, and the miniaturization effect is further realized.
Preferably, the first rope winding wheel has a first shaft portion, a first upper gear plate portion and a first lower gear plate portion, the first shaft portion is connected with the lifting transmission rope, the first upper gear plate portion is connected with the top end of the first shaft portion, the first lower gear plate portion is connected with the bottom end of the first shaft portion, the second rope winding wheel has a second shaft portion, a second upper gear plate portion and a second lower gear plate portion, the second shaft portion is connected with the lifting transmission rope, the second upper gear plate portion is connected with the top end of the second shaft portion and is engaged with the first upper gear plate portion of the first rope winding wheel, and the second lower gear plate portion is connected with the bottom end of the second shaft portion and is engaged with the first lower gear plate portion of the first rope winding wheel. Therefore, the first and the second rope winding wheels can synchronously rotate through the meshing transmission between the first and the second rope winding wheels.
Preferably, the second coil spring gear of the driving unit and the second rope winding wheel of the rope winding unit are connected together through a second transmission shaft. In addition, the first rope winding wheel is provided with a first shaft part, a first upper disc part and a first lower disc part, the first shaft part is connected with the lifting transmission rope, the first upper disc part is connected with the top end of the first shaft part, the first lower disc part is connected with the bottom end of the first shaft part, the second rope winding wheel is provided with a second shaft part, a second upper disc part and a second lower disc part, the second shaft part is connected with the lifting transmission rope, the second upper disc part is connected with the top end of the second shaft part and keeps a preset distance with the first upper disc part of the first rope winding wheel, and the second lower disc part is connected with the bottom end of the second shaft part and keeps a preset distance with the first lower disc part of the first rope winding wheel. Thus, the first and second rope winding wheels can be driven by the first and second coil spring gears respectively to rotate synchronously.
The invention will be described in more detail with reference to the following detailed description of embodiments of the invention, which provides a detailed construction, features, assembly or use of the double-layer rope winder. However, those skilled in the art should understand that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Drawings
Fig. 1 is an external perspective view of embodiment 1 of the present invention.
Fig. 2 is a partially exploded perspective view of embodiment 1 of the present invention.
Fig. 3 is a front view of embodiment 1 of the present invention.
Fig. 4 is a partial cross-sectional view of embodiment 1 of the present invention.
Fig. 5 is a cross-sectional view of fig. 3 taken along line 5-5.
Fig. 6 is a cross-sectional view of fig. 3 taken along line 6-6.
Fig. 7 is an external perspective view of embodiment 2 of the present invention.
Fig. 8 is a partially exploded perspective view of embodiment 2 of the present invention.
Fig. 9 is a front view of embodiment 2 of the invention.
Fig. 10 is a partial cross-sectional view of embodiment 2 of the present invention, showing primarily the first coil gear and the first coil sheave coupled together by a first drive shaft.
Fig. 11 is similar to fig. 10 and shows primarily the second wrap spring gear and the second wrap pulley coupled together by a second drive shaft.
Fig. 12 is a cross-sectional view taken along line 12-12 of fig. 9.
Fig. 13 is a cross-sectional view taken along line 13-13 of fig. 9.
[ description of reference ]
10 double-layer rope winder 20 driving unit
21 upper base 211 first top plate
212 first base plate 213 first strut
214 bottom hole of fastening part 215
22 first coil spring gear 23 second coil spring gear
24 first upper polygonal shaft hole 25 second upper polygonal shaft hole
26 coil spring 30 rope coiling unit
31 lower base 311 second ceiling plate
312 second base plate 313 second support
314 snap-fit slot 315 top hole
32 first winding wheel 321 first shaft part
322 first upper plate 323 first lower plate
324 first lower polygonal shaft hole 33 second rope winding wheel
332 second axle portion 334 second upper disc portion
336 second lower tray part 34 lifting transmission rope
35 limiting ring 36 upright rod
37 guide wheel shaft 38 guide wheel
40 first drive shaft 42 second drive shaft
50 first winding sheave 51 first shaft part
52 first upper disc part 53 first lower disc part
54 first lower polygonal shaft hole 60 second rope winding wheel
61 second shaft part 62 second upper disc part
63 second lower disk part 64 second lower polygonal shaft hole
Detailed Description
The applicant hereby gives notice that, in the embodiments and in the drawings that will be described below, the same reference numerals will be used to designate the same or similar components or structural features thereof.
Referring to fig. 1 and 2, the double-layer rope winder 10 of the present invention includes a driving unit 20, a rope winding unit 30, and a first transmission shaft 40.
The driving unit 20 has an upper base 21, a first coil spring gear 22, a second coil spring gear 23 and a coil spring 26, wherein:
the upper base 21 has a first top plate 211 and a first bottom plate 212, and the first top and bottom plates 211, 212 are connected together by a plurality of first pillars 213. The bottom end of each first pillar 213 has a fastening portion 214, and in this embodiment, the bottom surface of the first bottom plate 212 has a bottom hole 215 (as shown in fig. 4).
The first and second coil spring gears 22, 23 are rotatably provided on the upper base 21 and are engaged with each other so that the first and second coil spring gears 22, 23 can rotate synchronously. As shown in fig. 3 to 5, the first coil spring gear 22 has a first upper polygonal shaft hole 24 (a hexagonal hole as shown in fig. 5), and the first upper polygonal shaft hole 24 corresponds to the bottom hole 215 of the first bottom plate 212 of the upper base 21.
The coil spring 26 is connected to the first and second coil spring gears 22, 23 for providing elastic restoring force to drive the first and second coil spring gears 22, 23 to rotate synchronously.
The rope winding unit 30 has a lower base 31, a first rope winding wheel 32, a second rope winding wheel 33 and two lifting transmission ropes 34, wherein:
the lower base 31 has a second top plate 311 and a second bottom plate 312, the second top and bottom plates 311, 312 are connected together by a plurality of second support posts 313, wherein the top surface of the second top plate 311 has a top hole 315, as shown in fig. 4, the top hole 315 corresponds to the bottom hole 215 of the first bottom plate 212 of the upper base 21, and as shown in fig. 2, the top surface of the second top plate 311 has six fastening slots 314, and the six fastening slots 314 correspond to the fastening portions 214 of the upper base 21 in a one-to-one manner. Thus, as shown in fig. 3, the upper base 21 can be assembled with the lower base 21, 31 by the fastening parts 214 being fastened in the fastening grooves 314 of the lower base 31, but the upper and lower bases 21, 31 can be separated by simply releasing the relationship between the fastening parts 214 and the fastening grooves 314.
The first and second pulleys 32 and 33 are rotatably provided on the lower base 31. In the present embodiment, as shown in fig. 3, the first winding wheel 32 has a first shaft 321, a first upper gear plate 322 and a first lower gear plate 323, the first upper gear plate 322 and the first lower gear plate 323 are respectively connected to the top end and the bottom end of the first shaft 321, the second winding wheel 33 has a second shaft 332, a second upper gear plate 334 and a second lower gear plate 336, the second upper gear plate 334 and the second lower gear plate 336 are respectively connected to the top end and the bottom end of the second shaft 332, and the second upper gear plate 334 and the second lower gear plate 336 of the second winding wheel 33 are respectively engaged with the first upper gear plate 322 and the first lower gear plate 323 of the first winding wheel 32, so that the two can rotate synchronously by using the engagement transmission relationship. The first shaft 321 of the first winding sheave 32 has a first lower polygonal shaft hole 324 (a hexagonal hole as shown in fig. 4 and 6), and the first lower polygonal shaft hole 324 corresponds to the top hole 315 of the second top plate 311 of the lower base 31.
As shown in fig. 3, one ends of the two elevating drive ropes 34 are connected to the first shaft portion 321 of the first rope winding wheel 32 and the second shaft portion 332 of the second rope winding wheel 33, respectively, and the other ends of the two elevating drive ropes 34 are connected to a lower beam (this is a conventional technique and is not shown).
The first transmission shaft 40 has a hexagonal cross-sectional shape. The top end of the first transmission shaft 40 passes through the bottom hole 215 of the second bottom plate 312 of the upper base 21 and is connected to the first upper polygonal shaft hole 24 of the first coil gear 22 (as shown in fig. 4 and fig. 6), the bottom end of the first transmission shaft 40 passes through the top hole 315 of the second top plate 311 of the lower base 31 and is connected to the first lower polygonal shaft hole 324 of the first coil wheel 32 (as shown in fig. 4 and fig. 6), and the first coil gear 22 and the first coil wheel 32 can rotate synchronously through the first transmission shaft 40 due to the relationship of polygonal cross sections among the three.
As described above, when the two elevating transmission ropes 34 are extended outward to gradually come off the first and second rope winding wheels 32 and 33, the first and second rope winding wheels 32 and 33 rotate in synchronization, the first rope winding wheel 32 drives the first coil spring gear 22 through the first transmission shaft 40, so that the first coil spring gear 22 engages and transmits the second coil spring gear 23, and the coil spring 26 is pulled by the first and second coil spring gears 22 and 23 to accumulate elastic restoring force. Once the tension on the two lifting transmission ropes 34 is released, the elastic restoring force of the coil spring 26 acts on the first and second coil spring gears 22, 23 to make the first and second coil spring gears 22, 23 rotate in opposite directions synchronously, wherein the first coil spring gear 22 drives the first rope winding wheel 32 through the first transmission shaft 40, and then the first rope winding wheel 32 engages and drives the second rope winding wheel 33 to respectively wind the first and second rope winding wheels 32, 33 around the lifting transmission ropes 34 engaged therewith.
On the other hand, as shown in fig. 1, the rope winding unit 30 further has two limiting rings 35 and two vertical rods 36. The two limiting rings 35 are disposed at two ends of the lower base 31 and are respectively penetrated by a lifting transmission rope 34 for limiting the two lifting transmission ropes 34 to move in a specific area; the two vertical rods 36 are disposed at two ends of the lower base 31 and respectively abut against one lifting transmission rope 34, so that the two lifting transmission ropes 34 can be respectively displaced along the axial directions of the two vertical rods 36 when being wound by the first and second rope winding wheels 32 and 33, and can be orderly and neatly wound around the first and second rope winding wheels 32 and 33.
In addition, as shown in fig. 3, the rope winding unit 30 further has two guide wheel shafts 37 and two guide wheels 38, the two guide wheel shafts 37 are disposed at two ends of the lower base 31 and respectively adjacent to the first and second rope winding wheels 32, 33, the two guide wheels 38 are rotatably disposed on the two guide wheel shafts 37 and respectively prop against one lifting transmission rope 34, on one hand, the two guide wheels provide a guiding effect for the two lifting transmission ropes 34, and on the other hand, the two lifting transmission ropes 34 generate a proper tension.
Referring to fig. 7 and 8, in the double-layered rope winder 12 according to embodiment 2 of the present invention, the first and second rope winding wheels 50 and 60 are different from the above-mentioned embodiment in structure, and the first and second rope winding wheels 50 and 60 are not driven by the first and second coil spring gears 32 and 33 respectively instead of being in mesh transmission. In detail:
the driving unit 20 has an upper base 21, a first coil gear 22, a second coil gear 23 and a coil spring 26 in the present embodiment, wherein the difference in structure from the previous embodiment is: the first bottom plate 212 of the upper base 21 has two bottom holes 215, wherein one bottom hole 215 corresponds to the first upper polygonal shaft hole 24 of the first coil spring gear 22 (as shown in fig. 10); the second coil spring gear 23 further has a second upper polygonal shaft hole 25 (hexagonal hole as shown in fig. 13), and the second upper polygonal shaft hole 25 corresponds to another bottom hole 215 of the first bottom plate 212 of the upper base 21 (as shown in fig. 11). The first coil gear 22 and the coil spring 26 are identical in structure to those of the previous embodiments, and will not be described herein.
The rope winding unit 30 in this embodiment has a lower base 31, a first rope winding wheel 50, a second rope winding wheel 60 and two lifting transmission ropes 34, wherein the difference in structure from the previous embodiment is: the second top plate 311 of the lower base 31 has two top holes 315, wherein one of the top holes 315 corresponds to the first lower polygonal shaft hole 54 of the first rope winding wheel 50 (as shown in fig. 10); as shown in fig. 9, the first sheave 50 has a first shaft 51, a first upper disc 52 and a first lower disc 53, the first upper and lower disc 52, 53 are connected to the top and bottom ends of the first shaft 51, respectively, the second sheave 60 has a second shaft 61, a second upper disc 62 and a second lower disc 63, the second upper and lower disc 62, 63 are connected to the top and bottom ends of the second shaft 61, respectively, and a predetermined distance is maintained between the first upper disc 52 of the first sheave 50 and the second upper disc 62 of the second sheave 60, and between the first lower disc 53 of the first sheave 50 and the second lower disc 63 of the second sheave 60. Further, as shown in fig. 11, the second shaft portion 61 of the second pulley 60 has a second lower polygonal shaft hole 64 (hexagonal hole as shown in fig. 13), and the second lower polygonal shaft hole 64 corresponds to the other top hole 315 of the second top plate 311 of the lower base 31. The two lifting/lowering transmission ropes 34 are identical in structure to those of the previous embodiment, and will not be described herein.
In addition to the first transmission shaft 40, a second transmission shaft 42 is further provided in the present embodiment, and the cross-sectional shape of the second transmission shaft 42 is hexagonal. The top end of the second transmission shaft 42 passes through the second bottom hole 215 of the second bottom plate 312 of the upper base 21 and is clamped in the second upper polygonal shaft hole 25 of the second coil spring gear 23 (as shown in fig. 11 and 12), the bottom end of the second transmission shaft 42 passes through the second top hole 315 of the second top plate 311 of the lower base 31 and is clamped in the second lower polygonal shaft hole 64 of the second coil pulley 60 (as shown in fig. 11 and 13), and the second coil spring gear 23 and the second coil pulley 60 can synchronously rotate through the second transmission shaft 42 due to the relationship of polygonal cross sections among the three.
As can be seen from the above structure, when the two elevating transmission ropes 34 are extended outward to gradually come off the first and second rope winding wheels 50, 60, the first and second rope winding wheels 50, 60 rotate synchronously, the first rope winding wheel 50 drives the first coil spring gear 22 through the first transmission shaft 40, the second rope winding wheel 60 drives the second coil spring gear 23 through the second transmission shaft 50, and the coil spring 26 is pulled by the first and second coil spring gears 22, 23 to accumulate the elastic restoring force. Once the pulling force applied to the two lifting transmission ropes 34 is released, the elastic restoring force of the coil spring 26 acts on the first and second coil spring gears 22, 23 to make the first and second coil spring gears 22, 23 rotate synchronously, wherein the first coil spring gear 22 drives the first rope winding wheel 50 through the first transmission shaft 40, and the second coil spring gear 23 drives the second rope winding wheel 60 through the second transmission shaft 42, so that the first and second rope winding wheels 50, 60 respectively wind the lifting transmission ropes 34 engaged therewith.
In summary, the two- layer rope winder 10, 12 of the present invention employs a stacking manner to assemble the driving unit 20 and the rope winding unit 30 together, and uses at least one transmission shaft to achieve the effect of power transmission, so as to shorten the overall length without affecting the transmission effect, thereby achieving the effect of miniaturization.
Claims (10)
1. A double-deck cord winder for use with an unexposed pull-cord window covering, comprising:
the driving unit is provided with an upper base, a first coil spring gear, a second coil spring gear and a coil spring, the first coil spring gear and the second coil spring gear are rotatably arranged on the upper base and are meshed with each other, and the coil spring is connected with the first coil spring gear and the second coil spring gear;
the rope winding unit is provided with a lower base, a first rope winding wheel, a second rope winding wheel and two lifting transmission ropes, the lower base is connected with the upper base of the driving unit, the first rope winding wheel and the second rope winding wheel can be synchronously and rotatably arranged on the lower base and respectively coaxially correspond to a first coil spring gear and a second coil spring gear of the driving unit, and one ends of the two lifting transmission ropes are respectively connected with the first rope winding wheel and the second rope winding wheel; and
the first transmission shaft is connected with the first spring gear of the driving unit and the first rope winding wheel of the rope winding unit;
the upper base is provided with a first top plate and a first bottom plate, the first top plate and the first bottom plate are connected together through a plurality of first supporting columns, and the bottom surface of the first bottom plate is provided with a bottom hole; the lower base is provided with a second top plate and a second bottom plate, the second top plate and the second bottom plate are connected together through a plurality of second supporting columns, and the top surface of the second top plate is provided with a top hole;
the top end of the first transmission shaft penetrates through the bottom hole of the first bottom plate of the upper base and is connected with the first coil spring gear, and the bottom end of the first transmission shaft penetrates through the top hole of the second top plate of the lower base and is connected with the first coil rope wheel.
2. The dual-layer rope winder for an unexposed rope-pulling window curtain as claimed in claim 1, wherein the first rope winding wheel has a first shaft portion, a first upper gear portion and a first lower gear portion, the first shaft portion is connected to the lifting transmission rope, the first upper gear portion is connected to the top end of the first shaft portion, the first lower gear portion is connected to the bottom end of the first shaft portion, the second rope winding wheel has a second shaft portion, a second upper gear portion and a second lower gear portion, the second shaft portion is connected to the lifting transmission rope, the second upper gear portion is connected to the top end of the second shaft portion and engaged with the first upper gear portion of the first rope winding wheel, and the second lower gear portion is connected to the bottom end of the second shaft portion and engaged with the first lower gear portion of the first rope winding wheel.
3. The dual-layer cord winder for use in an unexposed pull-cord window covering as claimed in claim 2, wherein the first spring gear has a first upper polygonal shaft hole, the first cord winding wheel has a first lower polygonal shaft hole, the first transmission shaft has a polygonal cross-sectional shape, the top end of the first transmission shaft is engaged with the first upper polygonal shaft hole of the first spring gear, and the bottom end of the first transmission shaft is engaged with the first lower polygonal shaft hole of the first cord winding wheel.
4. The dual-layer cord winder for use in an unexposed pull-cord window covering of claim 1, further comprising a second drive shaft connecting said second wrap spring gear of said drive unit and said second cord winding wheel of said cord winding unit.
5. The dual-layer cord winder for an unexposed rope-pulling window covering according to claim 4, wherein the first cord winding wheel has a first shaft portion, a first upper disc portion and a first lower disc portion, the first shaft portion is connected to the lifting transmission cord, the first upper disc portion is connected to the top end of the first shaft portion, the first lower disc portion is connected to the bottom end of the first shaft portion, the second cord winding wheel has a second shaft portion, a second upper disc portion and a second lower disc portion, the second shaft portion is connected to the lifting transmission cord, the second upper disc portion is connected to the top end of the second shaft portion and maintains a predetermined distance with the first upper disc portion of the first cord winding wheel, and the second lower disc portion is connected to the bottom end of the second shaft portion and maintains a predetermined distance with the first lower disc portion of the first cord winding wheel.
6. The dual-layer cord winder for use in an unexposed pull-cord window covering according to claim 5, wherein the first winding gear has a first upper polygonal shaft hole, the first winding wheel has a first lower polygonal shaft hole, the first transmission shaft has a polygonal cross-sectional shape, the top end of the first transmission shaft is engaged with the first upper polygonal shaft hole of the first winding gear, the bottom end of the first transmission shaft is engaged with the first lower polygonal shaft hole of the first winding wheel, the second winding wheel has a first upper polygonal shaft hole, the second winding wheel has a second lower polygonal shaft hole, the cross-sectional shape of the second transmission shaft is polygonal, the top end of the second transmission shaft is engaged with the second upper polygonal shaft hole of the second winding wheel, and the bottom end of the second transmission shaft is engaged with the second lower polygonal shaft hole of the second winding wheel.
7. The dual-layer cord winder for an unexposed pull-cord window covering according to claim 1, wherein the upper base has a plurality of fastening portions, the lower base has a plurality of fastening grooves, and the fastening portions of the upper base are detachably fastened to the fastening grooves of the lower base.
8. The dual-layer cord winder for an unexposed pull-cord window curtain as claimed in claim 1, wherein said cord winding unit further comprises two position-limiting rings disposed at two ends of said lower base and respectively penetrated by said lifting/lowering transmission cord.
9. The dual-layer cord winder for an unexposed pull-cord window curtain as claimed in claim 1, wherein said cord winding unit further comprises two vertical rods disposed at two ends of said lower base and respectively abutting against said lifting/lowering transmission cord.
10. The dual-layer cord winder for an unexposed pull-cord window curtain as claimed in claim 1, wherein said cord winding unit further comprises two guide shafts and two guide wheels, said two guide shafts are disposed at two ends of said lower base and are respectively adjacent to said first and second cord winding wheels, said two guide wheels are rotatably disposed on said two guide shafts and respectively prop against said lifting transmission cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250753.6A CN110359833B (en) | 2018-03-26 | 2018-03-26 | Double-layer rope winder for exposed pull rope-free curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810250753.6A CN110359833B (en) | 2018-03-26 | 2018-03-26 | Double-layer rope winder for exposed pull rope-free curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359833A CN110359833A (en) | 2019-10-22 |
| CN110359833B true CN110359833B (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810250753.6A Active CN110359833B (en) | 2018-03-26 | 2018-03-26 | Double-layer rope winder for exposed pull rope-free curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359833B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499988U (en) * | 2009-08-14 | 2010-06-09 | 关健民 | Ropeless spring reeling device |
| CN202035962U (en) * | 2011-04-21 | 2011-11-16 | 林世明 | Stay cord guide structure of automatic curtain retractor |
| CN106150322A (en) * | 2015-04-13 | 2016-11-23 | 陈金福 | The curtain arrestment mechanism of curtain without stretching wire |
| CN106539474A (en) * | 2015-09-23 | 2017-03-29 | 宝崧精密工业股份有限公司 | Cordless window curtain controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185109A1 (en) * | 2007-02-02 | 2008-08-07 | Ker-Min Lin | Reeling device for curtain cords |
-
2018
- 2018-03-26 CN CN201810250753.6A patent/CN110359833B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499988U (en) * | 2009-08-14 | 2010-06-09 | 关健民 | Ropeless spring reeling device |
| CN202035962U (en) * | 2011-04-21 | 2011-11-16 | 林世明 | Stay cord guide structure of automatic curtain retractor |
| CN106150322A (en) * | 2015-04-13 | 2016-11-23 | 陈金福 | The curtain arrestment mechanism of curtain without stretching wire |
| CN106539474A (en) * | 2015-09-23 | 2017-03-29 | 宝崧精密工业股份有限公司 | Cordless window curtain controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359833A (en) | 2019-10-22 |
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