WO2020237461A1 - Ressort hélicoïdal plat et dispositif d'entraînement de rideau - Google Patents

Ressort hélicoïdal plat et dispositif d'entraînement de rideau Download PDF

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Publication number
WO2020237461A1
WO2020237461A1 PCT/CN2019/088568 CN2019088568W WO2020237461A1 WO 2020237461 A1 WO2020237461 A1 WO 2020237461A1 CN 2019088568 W CN2019088568 W CN 2019088568W WO 2020237461 A1 WO2020237461 A1 WO 2020237461A1
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WO
WIPO (PCT)
Prior art keywords
scroll spring
section
curtain
length
torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/088568
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English (en)
Chinese (zh)
Inventor
雷振邦
雷兴邦
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/CN2019/088568 priority Critical patent/WO2020237461A1/fr
Publication of WO2020237461A1 publication Critical patent/WO2020237461A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H5/00—Devices for drawing draperies, curtains, or the like
    • A47H5/14—Apparatus for lowering curtains or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/10—Spiral springs with turns lying substantially in plane surfaces

Definitions

  • This application relates to the technical field of curtain accessories, and in particular to a flat scroll spring and a curtain driving device.
  • the drawstring connected to the curtain is wound on the reel, and the reel can be rotated by the driving device, so that the drawstring is wound on or from the reel Released to achieve the lifting of the curtain.
  • Some curtain driving devices use flat spiral springs to provide driving force.
  • the outer ends of the flat spiral springs are wound and fixed on an intermediate shaft parallel to the central axis of the flat spiral spring itself, and the intermediate shaft is connected to the reel drive.
  • the pull rope drives the reel to rotate in the positive direction, which in turn drives the intermediate shaft to rotate in the positive direction.
  • the reeds of the flat spiral spring are wound onto the intermediate shaft one by one; At the same time, only need to pull the curtain down slightly, the flat scroll spring will drive the intermediate shaft to rotate in the reverse direction under the action of its own elastic force. At the same time, the reed will gradually withdraw from the intermediate shaft and retract and wind, and the intermediate shaft Drive the winding wheel to rotate in the reverse direction to recover the rope, and then drive the curtain up.
  • the forming radius of curvature of the reed after bending and forming gradually increases from the inner ring to the outer ring, and the smaller the forming radius of curvature of the reed, the greater the torque that can be provided. Therefore, The torque provided by the traditional flat spiral spring is gradually reduced from the inner ring to the outer ring. Since the change trend of the torque of the traditional flat scroll spring is not compatible with the change trend of the weight that the curtain driving device needs to support, it cannot meet the curtain driving demand well.
  • the torque provided by the flat spiral spring is gradually reduced from the outer ring to the inner ring, which roughly corresponds to the changing trend of the weight supported by the curtain driving device. It can drive the curtain fabric up and down better.
  • the torque change rate of the working section of this flat scroll spring is relatively constant, while the change rate of the weight that the curtain driving device needs to support is not constant. Specifically, the higher the curtain rises, the curtain driving device needs to support The smaller the rate of change of the weight, therefore, the flat spiral spring with a constant rate of torque change will still affect the smoothness of the driving curtain.
  • the technical problem to be solved by the embodiments of the present application is to provide a flat spiral spring that can provide torque with different rates of change in different working sections.
  • a further technical problem to be solved by the embodiments of the present application is to provide a curtain driving device that can provide a stable supporting force during the lifting and lowering process of the curtain.
  • a planar scroll spring the torque provided by the working section of the reed of the planar scroll spring gradually decreases from the outer ring to the inner ring
  • the The working section is composed of a first length section and a second length section connected to the inner end of the first length section.
  • the torque decreases by a first decrement value per unit length.
  • the outer ring gradually decreases toward the inner ring.
  • the torque decreases according to each unit length.
  • the second decrease value gradually decreases from the outer ring to the inner ring, and the first decrease value is less than The second decrement value.
  • the starting end of the leaf spring of the outermost circle of the working section of the planar scroll spring is provided with a straight outer fixing section.
  • the end of the leaf spring of the innermost circle of the working section of the planar scroll spring is provided with an internal fixing part.
  • the embodiment of the present application also provides a curtain driving device, including a middle rotating shaft, a core shaft and a flat scroll spring, the outer end of the flat scroll spring is fixed to the middle rotating shaft and the inner end is fixed to the center rotating shaft.
  • the planar scroll spring is the planar scroll spring described in any one of the above.
  • the embodiments of the present application divide the working section of the planar scroll spring into a first length section and a second length section, and within the first length section, The provided torque decreases according to each unit length.
  • the first decreasing value gradually decreases from the outer ring to the inner ring.
  • the supplied torque decreases by the second decreasing value per unit length.
  • the first decrement value is smaller than the second decrement value, thereby making the torque distribution of the working section of the planar scroll spring and the support required when the curtain rises to different heights
  • the force is better matched, so as to always provide the stable and effective supporting force required by the curtain, and make the lifting and lowering of the curtain more stable.
  • Fig. 1 is a schematic diagram of a three-dimensional structure of an embodiment of a planar scroll spring of the present application.
  • Fig. 2 is a schematic diagram of the torque distribution along the length of an embodiment of the planar scroll spring of the present application.
  • Fig. 3 is a graph of actually measured torque-number of turns of an embodiment of the planar scroll spring of the present application.
  • Fig. 4 is a schematic structural diagram of an embodiment of the curtain driving device of the present application.
  • an embodiment of the present application provides a flat spiral spring 1.
  • the torque provided by the working section L AC of the reed 10 of the flat spiral spring 1 is from the outer ring 11 to the inner ring 12 is gradually reduced, the working segment from the first segment length L AB and adapter to an end section of a length L AB in the first section of the second length L BC configuration, in the first section length L AB,
  • the torque T decreases according to each unit length.
  • the first decreasing value gradually decreases from the outer ring 11 to the inner ring 12.
  • the torque T decreases according to each unit length.
  • the second decrement value gradually decreases from the outer ring 11 to the inner ring 12, and the first decrement value is smaller than the second decrement value.
  • the working section L AC of the reed 10 mentioned in the present application refers to the spring segment that is stressed when the curtain is moved from the fully contracted initial position to the maximum position of the curtain.
  • the ring 11 and the inner ring 12 are both relative concepts, that is, relatively speaking, the outer ring 11 is far from the axis, and the inner ring 12 is closer to the axis. Taking the reed located in the middle layer as an example, it is relatively The reed on the outer side is the inner ring 12, and the reed on the inner side is the outer ring 11.
  • FIG. 3 it is a broken line graph of the torque-turn relationship drawn by actually measuring the torque of the planar scroll spring 1 provided by the embodiment of the present application.
  • the abscissa in the figure represents the direction from the outermost ring to the inner ring. In the actual measurement, the torque is measured every 0.2 laps.
  • the ordinate represents the measured torque T value, and the unit is N ⁇ m. Since the flat spiral spring 1 is wound one by one, obviously, the length of each outer ring 11 will be greater than the length of each inner ring 12, that is, the number of turns corresponding to each unit length will be changed by The outer ring 11 increases to the inner ring 12 successively. Therefore, in combination with FIG. 3, it can also be found that the distribution trend of the torque T along the length of the reed 10 is basically the same as that shown in FIG. 2.
  • the provided torque T decreases according to each unit length.
  • the first decreasing value gradually decreases from the outer ring 11 to the inner ring 12.
  • the provided torque T decreases by the second The decrement value gradually decreases from the outer ring 11 to the inner ring 12, and the first decrement value is smaller than the second decrement value, so that the torque T distribution of the working section L AC of the planar scroll spring 1 and the curtain rise and fall to The supporting force required at different height positions is better matched, so that the curtain can always provide the stable and effective supporting force required by the curtain, and the lifting of the curtain is more stable.
  • a flat outer fixing section 3 is provided at the beginning of the reed 10 of the outermost ring of the working section L AC of the planar scroll spring.
  • the outer fixed section 3 can be used to be fixed to the intermediate rotating shaft 4 for receiving the wound flat spiral spring 1.
  • the outer fixing section 3 can be an I-shaped piece, a T-shaped piece, or a rectangular piece with a round hole, etc., which can fix the starting end of the reed 10 of the outermost ring of the planar scroll spring 1 to the corresponding The structure on the middle shaft 4.
  • the outer fixing section 3 provided in this embodiment is designed as a non-working section and is designed as a straight structure, which does not generate torque by itself, and can be more conveniently fixed to the corresponding intermediate shaft 4, and enhances the assembly of the planar scroll spring 1 during use effectiveness.
  • the end of the reed 10 of the innermost ring of the working section L AC of the planar scroll spring 1 is further provided with an internal fixing portion 6.
  • the inner fixing portion 6 can be used for fixing to the mandrel 5 for receiving the wound flat spiral spring 1.
  • the inner fixing portion 6 is composed of one or several rounds of circular reeds with a radius of curvature smaller than that of the innermost reed 10 of the working section L AC .
  • the flat scroll spring 1 can be conveniently wound and fixed on the corresponding mandrel 5, with a smaller matching gap, avoiding the shaking of the flat scroll spring 1 during operation, and improving the use of curtains. The stability.
  • the embodiment of the present application also provides a curtain driving device 7, including a middle rotating shaft 4, a mandrel 5, and a flat spiral spring 1.
  • the flat spiral spring 1 The outer end of is fixed to the intermediate shaft 4 and the inner end is fixed to the mandrel 5, and the planar spiral spring 1 is the planar spiral spring 1 as described above.
  • the aforementioned flat spiral spring 1 is used to provide driving power, and the intermediate rotating shaft 4 is connected to the reel of the draw rope, so that the reel can be driven. Since the working section L AC of the planar scroll spring 1 is divided into a first length section L AB and a second length section L BC , in the first length section L AB , the provided torque T is based on each unit The first decreasing value of the length decreases gradually from the outer ring 11 to the inner ring 12. In the second length section L BC , the provided torque T decreases according to each unit length.
  • the second decreasing value decreases from the outer ring 11 gradually decreases toward the inner ring 12, and the first decrement value is smaller than the second decrement value, so that the torque T distribution of the working section L AC of the planar scroll spring 1 is compared with the difference when the curtain rises to different height positions.
  • the required supporting force is better matched, so that the smooth and effective supporting force required by the curtain can always be given, and the lifting of the curtain is more stable.
  • the embodiments of the present application divide the working section of the planar scroll spring into a first length section and a second length section, and within the first length section, The provided torque decreases according to each unit length.
  • the first decreasing value gradually decreases from the outer ring to the inner ring.
  • the supplied torque decreases by the second decreasing value per unit length.
  • the first decrement value is less than the second decrement value, thereby making the torque distribution of the working section of the planar scroll spring and the support required when the curtain rises to different heights
  • the force is better matched, so as to always provide the stable and effective supporting force required by the curtain, and make the lifting and lowering of the curtain more stable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

Ressort hélicoïdal plat (1). Le couple fourni par un segment de travail (LAC) d'une plaque de ressort (10) du ressort hélicoïdal plat (1) diminue progressivement d'un anneau externe (11) à un anneau interne (12), et le segment de travail (LAC) est constitué d'une première section de longueur (LAB) et d'une seconde section de longueur (LBC) qui est reliée à l'extrémité interne de la première section de longueur (LAB). Dans la première section de longueur (LAB), le couple diminue progressivement de l'anneau externe (11) à l'anneau interne (12) selon une première valeur décroissante par unité de longueur, et à l'intérieur de la seconde section de longueur (LBC), le couple diminue progressivement de l'anneau externe (11) à l'anneau interne (12) selon une seconde valeur décroissante par unité de longueur, la première valeur décroissante étant inférieure à la seconde valeur décroissante. La présente invention fait en sorte que la distribution de couple dans le segment de travail (LAC) du ressort hélicoïdal plat (1) correspond bien aux forces de support requises lorsqu'un rideau est soulevé à différentes positions de hauteur, fournissant ainsi toujours des forces de support stables et efficaces requises par le rideau, rendant le soulèvement du rideau plus stable.
PCT/CN2019/088568 2019-05-27 2019-05-27 Ressort hélicoïdal plat et dispositif d'entraînement de rideau Ceased WO2020237461A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/088568 WO2020237461A1 (fr) 2019-05-27 2019-05-27 Ressort hélicoïdal plat et dispositif d'entraînement de rideau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/088568 WO2020237461A1 (fr) 2019-05-27 2019-05-27 Ressort hélicoïdal plat et dispositif d'entraînement de rideau

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WO2020237461A1 true WO2020237461A1 (fr) 2020-12-03

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024064A1 (en) * 2009-08-01 2011-02-03 Philip Ng Spring assist for multi band roller shade
CN104302861A (zh) * 2012-02-27 2015-01-21 亨特道格拉斯工业公司 具有抗衡装置的卷帘
CN205805379U (zh) * 2016-04-12 2016-12-14 黄贤德 弹簧马达
US20170275943A1 (en) * 2016-03-22 2017-09-28 Anli Spring Co., Ltd. Unequal-torque coil spring and a spring motor thereof
CN206889541U (zh) * 2017-05-27 2018-01-16 雷振邦 窗帘驱动装置的平面涡卷弹簧
CN208152908U (zh) * 2018-04-24 2018-11-27 雷振邦 电动窗帘

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024064A1 (en) * 2009-08-01 2011-02-03 Philip Ng Spring assist for multi band roller shade
CN104302861A (zh) * 2012-02-27 2015-01-21 亨特道格拉斯工业公司 具有抗衡装置的卷帘
US20170275943A1 (en) * 2016-03-22 2017-09-28 Anli Spring Co., Ltd. Unequal-torque coil spring and a spring motor thereof
CN205805379U (zh) * 2016-04-12 2016-12-14 黄贤德 弹簧马达
CN206889541U (zh) * 2017-05-27 2018-01-16 雷振邦 窗帘驱动装置的平面涡卷弹簧
CN208152908U (zh) * 2018-04-24 2018-11-27 雷振邦 电动窗帘

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