CN109869084B - Double-coil spring type rope winder for non-exposed pull rope type curtain - Google Patents
Double-coil spring type rope winder for non-exposed pull rope type curtain Download PDFInfo
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- CN109869084B CN109869084B CN201711260033.XA CN201711260033A CN109869084B CN 109869084 B CN109869084 B CN 109869084B CN 201711260033 A CN201711260033 A CN 201711260033A CN 109869084 B CN109869084 B CN 109869084B
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Abstract
The invention relates to a double-coil-spring rope winder, which comprises a driving unit and a transmission unit. The driving unit is provided with a first coil spring gear, a second coil spring gear meshed with the first coil spring gear, a first coil spring connected with the first and second coil spring gears, a rotating wheel adjacently arranged on the first coil spring gear and a second coil spring connected with the second coil spring gear and the rotating wheel, the driving unit is provided with a first transmission gear, a second transmission gear and two lifting transmission ropes, the first and second transmission gears can be driven by the second coil spring gear to synchronously rotate, and the two lifting transmission ropes are respectively arranged on the first and second transmission gears. Through the matching of the first and second coil springs, the double-coil spring type rope winder can be independently applied to large-size curtains without additionally increasing the number, thereby achieving the effects of reducing the cost and simplifying the structure.
Description
Technical Field
The invention relates to a non-exposed pull rope type curtain, in particular to a double-coil spring type rope winder for the non-exposed pull rope type curtain.
Background
The curtain without exposed pull rope is made up by using automatic rope winder in the upper beam to wind up the lifting driving rope, and the lower beam is connected with the lower beam, so that the lower beam can be gradually raised relative to the upper beam in the course of winding up the lifting driving rope, and the blades can be stacked together by upward moving of the lower beam so as to attain the goal of folding curtain.
The automatic rope winder has no problem in use for the curtain with the common size, but when the automatic rope winder is matched with the curtain with the large size, the lower beam cannot be smoothly driven to rise due to insufficient tension. Therefore, the conventional solution is to increase the number of the automatic rope winders to two or more sets, but the increase of the number of parts inevitably brings about the problems of cost increase and structural complication.
Disclosure of Invention
The invention mainly aims to provide a double-coil spring type rope winder for a rope-pulling type curtain without exposed parts.
In order to achieve the above object, the dual-coil spring type rope winder of the present invention comprises a base, a driving unit and a transmission unit. The driving unit is provided with a first coil spring gear, a second coil spring gear, a first coil spring, a rotating wheel and a second coil spring, the first coil spring gear is rotatably arranged on the base, the second coil spring gear is rotatably arranged on the base and is meshed with the first coil spring gear, the first coil spring is connected with the first coil spring gear and the second coil spring gear, the rotating wheel is freely rotatably arranged on the base and is adjacently arranged on the first coil spring gear, and the second coil spring is connected with the second coil spring gear and the rotating wheel; the transmission unit is provided with a first transmission gear, a second transmission gear and two lifting transmission ropes, the first transmission gear and the second transmission gear can be synchronously and rotatably arranged on the base, at least one of the first transmission gear and the second transmission gear is meshed with the second coil spring gear, and one ends of the two lifting transmission ropes are respectively arranged on the first transmission gear and the second transmission gear.
When the two lifting transmission ropes are simultaneously stretched outwards, the first transmission gear and the second transmission gear can rotate towards opposite directions, then the second transmission gear can drive the second coil spring gear to rotate, in the process of rotating the second coil spring gear, on one hand, the first coil spring gear is driven to rotate, on the other hand, the first coil spring gear and the second coil spring gear are simultaneously wound up to accumulate elastic restoring forces of the first coil spring and the second coil spring, and at the moment, the rotating wheel freely idles. Once the first and second coil springs release the elastic restoring force, the second coil spring gear will drive the second transmission gear to rotate reversely, and then the second transmission gear will drive the first transmission gear to rotate reversely, so that the first and second transmission gears will roll up the lifting transmission rope matched with the first and second coil springs respectively. The wheel is also free to freewheel at this time.
Therefore, the first coil spring and the second coil spring are matched, so that the double-coil-spring type rope winder has enough winding force, can be independently matched with a large-size curtain for use, does not need to be additionally increased in number, and further achieves the purposes of reducing the cost and simplifying the structure.
Drawings
Fig. 1 is an external perspective view of a double-coil-spring type cord winder according to embodiment 1 of the present invention.
Fig. 2 is an exploded perspective view of the double-wrap-spring cord winder according to embodiment 1 of the present invention.
Fig. 3 is a sectional view of the double wrap spring type cord winder according to embodiment 1 of the present invention, mainly showing a state where the elevating drive cord is extended outward.
FIG. 4 is similar to FIG. 3 and shows the lift cord in a retracted position.
Fig. 5 is an exploded perspective view of the double-wrap-spring cord winder according to embodiment 2 of the present invention.
[ notation ] to show
10 double-coil spring type rope winder 20 base
21 top plate 22 upper edge column
23 bottom plate 24 lower side column
25 first guide bar 26 second guide bar
30 drive unit 31 first coil spring gear
32 second coil spring gear 33 first coil spring
34 runner 35 second wrap spring
40 drive unit 41 first drive gear
42 second transmission gears 43, 44 lifting transmission ropes
45 dish body
Detailed Description
Referring to fig. 1 and 2, a dual-coil spring type rope winder 10 according to embodiment 1 of the present invention includes a base 20, a driving unit 30 and a transmission unit 40.
The base 20 is fixed to an upper beam (not shown) and has a top plate 21 and a bottom plate 23, the bottom surface of the top plate 21 has a plurality of upper side columns 22, the top surface of the bottom plate 23 has a plurality of lower side columns 24, and the top plate 21 and the bottom plate 23 are assembled together by the engagement of the upper and lower side columns 22, 24. In addition, one end of the base 20 further has a plurality of first and second guide rods 25, 26 symmetrically disposed, and both ends of the first and second guide rods 25, 26 are respectively connected to the top plate 21 and the bottom plate 23.
Referring to fig. 2 and 3, the driving unit 30 has a first coil spring gear 31, a second coil spring gear 32, a first coil spring 33, a pulley 34 and a second coil spring 35. The first and second coil spring gears 31, 32 are rotatably disposed on the base 20 and engaged with each other, so that the first and second coil spring gears 31, 32 rotate synchronously; the first coil spring 33 is connected with the first and second coil spring gears 31 and 32; the runner 34 is rotatably provided on the base 20 and adjacent to the first coil spring gear 31; the second coil spring 35 connects the second coil spring gear 32 and the pulley 34, and a position where one end of the second coil spring 35 is fixed to the second coil spring gear 32 and a position where one end of the first coil spring 33 is fixed to the second coil spring gear 33 are opposite to each other.
The transmission unit 40 has a first transmission gear 41, a second transmission gear 42 and two lifting transmission ropes 43 and 44. In the present embodiment, the first and second transmission gears 41 and 42 are rotatably disposed on the base 20 and engaged with each other in a side-by-side manner, wherein the second transmission gear 42 is further engaged with the second coil spring gear 32, so that the first and second transmission gears 41 and 42 can rotate synchronously with the second coil spring gear 32; the two lifting transmission ropes 43 and 44 are respectively wound around the first and second guide rods 25 and 26 of the base 20, one ends of the two lifting transmission ropes 43 and 44 are respectively connected to the first and second transmission gears 41 and 42, and the other ends of the two lifting transmission ropes 43 and 44 are commonly connected to a lower beam (not shown).
When the lower beam is pulled down to lower and expand the blades, the two lifting transmission ropes 43 and 44 are simultaneously stretched outwards by the lower beam to gradually separate from the first and second transmission gears 41 and 42, so that the first and second transmission gears 41 and 42 rotate in opposite directions through the meshed transmission relationship with each other. When viewed from the direction of fig. 3, the first transmission gear 41 rotates clockwise, the second transmission gear 42 rotates counterclockwise, and then the second transmission gear 42 drives the second coil spring gear 32 to rotate clockwise, so that during the rotation of the second coil spring gear 32, on one hand, the first coil spring gear 31 is driven to rotate counterclockwise, and on the other hand, the first and second coil springs 33, 35 are simultaneously wound up to accumulate the elastic restoring forces of the first and second coil springs 33, 35, and at this time, the runner 34 is driven by the second coil spring 35 to rotate freely. The free rotation of the runner 34 can appropriately compensate the length of the second coil spring 35 wound by the second coil spring gear 32, so that the first and second coil springs 35 can be smoothly wound together on the second coil spring gear 32.
On the contrary, when the lower beam is pushed up, the upper pushing force applied to the lower beam will offset the weight of the lower beam and all the blades, so that the first and second coil springs 33, 35 drive the second coil spring gear 32 to rotate together by their own restoring force, as shown in fig. 4, the second transmission gear 42 is driven to rotate in the process of the second coil spring gear 32 rotating, and then the second transmission gear 42 drives the first transmission gear 41 to rotate, so that the first and second transmission gears 41, 42 respectively wind the lifting transmission ropes 43, 44 matched with the first and second transmission gears 41, 42, and further the blades can be smoothly folded up.
In the state that the lower beam is not applied with external force, the first and second guide rods 25, 26 provide moderate resistance to the two lifting transmission ropes 43, 44, respectively, so that the blade can be stopped at any height at any time without easily falling or collapsing when the external force is released.
On the other hand, the structures of the first and second transmission gears 41 and 42 may be variously changed. As shown in FIG. 5, the first and second transmission gears 41, 42 can also be connected together in a vertical coaxial manner and simultaneously engage with the second coil spring gear 32, so that the first and second transmission gears 41, 42 can also achieve the meshing transmission effect with the second coil spring gear 32. One end of each of the two lifting/lowering transmission ropes 43, 44 is connected to the first and second transmission gears 41, 42, respectively, and is separated by a disc 45 disposed between the first and second transmission gears 41, 42, so as to avoid the problem of mutual interference.
In conclusion, the double-coil spring type rope winder 10 of the present invention has sufficient winding force by the matching of the first and second coil springs 33, 35, and can be used alone with a large-sized curtain without additional number, thereby achieving the purpose of reducing cost and simplifying structure. In addition, the first and second coil springs 33, 35 may use the same or different specifications (such as width or thickness), so that the elastic force provided by the two can be equal or larger or smaller, and can be changed according to the actual requirement, so as to add more options and elasticity to the structural configuration, thereby further achieving the effect of adjusting the elastic force.
Claims (6)
1. A dual wrap spring cord winder for use with an unexposed pull-cord window covering, comprising:
a base;
the driving unit is provided with a first coil spring gear, a second coil spring gear, a first coil spring, a rotating wheel and a second coil spring, the first coil spring gear is rotatably arranged on the base, the second coil spring gear is rotatably arranged on the base and is meshed with the first coil spring gear, the first coil spring is connected with the first coil spring gear and the second coil spring gear, the rotating wheel is freely rotatably arranged on the base and is adjacently arranged on the first coil spring gear, and the second coil spring is connected with the second coil spring gear and the rotating wheel; and
and the transmission unit is provided with a first transmission gear, a second transmission gear and two lifting transmission ropes, the first transmission gear and the second transmission gear can be synchronously and rotatably arranged on the base, at least one of the first transmission gear and the second transmission gear is meshed with the second coil spring gear, and one ends of the two lifting transmission ropes are respectively arranged on the first transmission gear and the second transmission gear.
2. The dual-wrap spring cord winder of claim 1, wherein the first and second coil springs are of the same or different gauge.
3. The dual wrap spring cord winder of claim 1, wherein the position where one end of the first wrap spring is fixed to the second wrap spring gear is on the same side of the second wrap spring gear as the position where one end of the second wrap spring is fixed to the second wrap spring gear.
4. The dual-coil spring type rope winder of claim 1, wherein one end of the base has a plurality of first guide rods and a plurality of second guide rods, wherein one of the lift driving ropes is wound around the first guide rods, and the other of the lift driving ropes is wound around the second guide rods.
5. The dual wrap spring cord winder of claim 1, wherein the first and second drive gears are side by side and the second drive gear is engaged between the second wrap spring gear and the first drive gear.
6. The dual wrap spring cord winder of claim 1, wherein the first and second drive gears are coaxially coupled together up and down and the first and second drive gears simultaneously engage the second wrap spring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260033.XA CN109869084B (en) | 2017-12-04 | 2017-12-04 | Double-coil spring type rope winder for non-exposed pull rope type curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260033.XA CN109869084B (en) | 2017-12-04 | 2017-12-04 | Double-coil spring type rope winder for non-exposed pull rope type curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869084A CN109869084A (en) | 2019-06-11 |
| CN109869084B true CN109869084B (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260033.XA Active CN109869084B (en) | 2017-12-04 | 2017-12-04 | Double-coil spring type rope winder for non-exposed pull rope type curtain |
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| CN (1) | CN109869084B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203867437U (en) * | 2014-03-28 | 2014-10-08 | 太仓敬富塑胶制品有限公司 | Horizontal type curtain without exposed digging rope |
| CN204646047U (en) * | 2015-05-19 | 2015-09-16 | 太仓敬富塑胶制品有限公司 | Without exposed pulling rod curtain driving device |
| CN204646046U (en) * | 2015-01-20 | 2015-09-16 | 清远大中塑胶制品有限公司 | A kind of concealed sun blind of stay cord of fixed buildings |
| CN205135370U (en) * | 2015-09-08 | 2016-04-06 | 亿丰综合工业股份有限公司 | No stay cord formula (window) curtain control module |
| CN106032743A (en) * | 2015-03-18 | 2016-10-19 | 陈金福 | Curtain body braking mechanism for curtain without stay ropes |
| CN107165568A (en) * | 2016-03-07 | 2017-09-15 | 陈金福 | The curtain transmission mechanism of curtain without stretching wire |
| TW201740011A (en) * | 2016-05-09 | 2017-11-16 | Chen Jin-Fu | One-way driving mechanism of curtain without pull ropes comprising two coil spring gears meshed with each other and a coil spring connected between the two coil spring gears |
| CN107386943A (en) * | 2016-05-16 | 2017-11-24 | 陈金福 | The one-way driving mechanism of curtain without stretching wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201524434A (en) * | 2013-12-20 | 2015-07-01 | Chen Jin Fu | Blinds controlling mechanism for cordless blinds |
-
2017
- 2017-12-04 CN CN201711260033.XA patent/CN109869084B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203867437U (en) * | 2014-03-28 | 2014-10-08 | 太仓敬富塑胶制品有限公司 | Horizontal type curtain without exposed digging rope |
| CN204646046U (en) * | 2015-01-20 | 2015-09-16 | 清远大中塑胶制品有限公司 | A kind of concealed sun blind of stay cord of fixed buildings |
| CN106032743A (en) * | 2015-03-18 | 2016-10-19 | 陈金福 | Curtain body braking mechanism for curtain without stay ropes |
| CN204646047U (en) * | 2015-05-19 | 2015-09-16 | 太仓敬富塑胶制品有限公司 | Without exposed pulling rod curtain driving device |
| CN205135370U (en) * | 2015-09-08 | 2016-04-06 | 亿丰综合工业股份有限公司 | No stay cord formula (window) curtain control module |
| CN107165568A (en) * | 2016-03-07 | 2017-09-15 | 陈金福 | The curtain transmission mechanism of curtain without stretching wire |
| TW201740011A (en) * | 2016-05-09 | 2017-11-16 | Chen Jin-Fu | One-way driving mechanism of curtain without pull ropes comprising two coil spring gears meshed with each other and a coil spring connected between the two coil spring gears |
| CN107386943A (en) * | 2016-05-16 | 2017-11-24 | 陈金福 | The one-way driving mechanism of curtain without stretching wire |
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| Publication number | Publication date |
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| CN109869084A (en) | 2019-06-11 |
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