US3763916A - Window shade motor - Google Patents

Window shade motor Download PDF

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Publication number
US3763916A
US3763916A US00211944A US3763916DA US3763916A US 3763916 A US3763916 A US 3763916A US 00211944 A US00211944 A US 00211944A US 3763916D A US3763916D A US 3763916DA US 3763916 A US3763916 A US 3763916A
Authority
US
United States
Prior art keywords
spring
motor
roller
recess
shade
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.)
Expired - Lifetime
Application number
US00211944A
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English (en)
Inventor
R Gossling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clopay Corp
Original Assignee
Clopay Corp
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 Clopay Corp filed Critical Clopay Corp
Application granted granted Critical
Publication of US3763916A publication Critical patent/US3763916A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60—Spring drums operated only by closure members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
    • F03G1/024—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil using helical springs

Definitions

  • a window shade motor includes improved apparatus for securing a spring to a body element of the motor.
  • the body element has a recess and the spring includes a bent portion near its end.
  • the bent portion extends into and engages the edges of the recess in order to secure the spring against rotation with respect to the body.
  • the end of the spring beyond the bent portion is positioned to engage the shade roller to maintain the bent portion of the spring within the recess.
  • a spring motor within one end of the shade roller.
  • the motor can be tensioned by the unwinding of a shade from the roller and can thereafter be actuated to roll up the shade upon release of a clutch or latch device.
  • Typical window shade motors include a spear which is connected through a clutch device to a motor dowel, the spear or dowel being journalled within a body which is secured to the shade roller.
  • a spring is connected to the far end of the dowel. The spring extends from its connection with the dowel and generally concentrically with the dowel toward the body to which it is secured.
  • the spring When the roller is in operative position and is rotated, such as by the unwinding of the shade, the spring is tensioned between the body of the motor and the far end of the dowel. When the clutch is released, as is done by giving the shade a slight downward tug, the spring is effective to wind up the shade.
  • the spring ends must be secured to the dowel at the one end, and to the body at the other end.
  • the dowel at its far end may have a transverse slit across its diameter for holding one end of the spring.
  • a number of different devices have been proposed for securing the opposite end of the spring to the body of the motor. These devices have been such things as pins, clips, staples and tacks, among others. As a result, in the course of manufacturing spring motors, two opcrations have been necessary to secure the spring to the body.
  • a first operation is the positioning or seating of the spring on the body.
  • a second operation is the clip ping, pinning or stapling of the spring to the body in order to fix the spring against rotation with respect thereto.
  • a further object of the invention has been to provide improved means for securing a spring to a body of a window shade motor that entails a single manufacturing or assembling operation.
  • Another objective of the invention has been to provide means to secure a spring of the type set forth which lends itself to automatic machine assembly.
  • the invention contemplates a window shade motor of the spring type wherein one end of the spring has a bent portion which is positioned within a recess in the body of the motor.
  • the bent portion of the spring engages the sides of the recess and maintains the spring stationary with respect to the body.
  • the motor body includes a tapered nose portion, a threaded portion onto which a spring can be threaded, and an enlarged radially extending portion for engaging the roller of a window shade.
  • the recess in the body is within a thread line of the threaded portion.
  • An end of the spring extends beyond the bent portion and toward an inner wall of the shade roller. Should the spring slightly rotate on the body, such movement would bring the spring end in contact with the inner wall of the roller. The spring wouldthen tend to force the bent portion back into the recess, thereby positively securing the spring to the body.
  • the spring In the manufacture of the spring motor, the spring need only to be threaded onto the body, the bent portion of the spring snapping into the recess which may be located toward the end of the threaded portion.
  • the tapered nose serves to guide the spring into the threads. No further clipping, pinning or stapling is necessary.
  • FIG. 1 is an elevational view of a spring motor incorporating the principles of the present invention
  • FIG. 2 is an enlarged fragmentary cross sectional view thereof illustrated in its operational position within a shade roller
  • FIG. 3 is a fragmentary view taken along the line 33 of FIG. 2.
  • the shade supporting structure generally includes an outer shade roller tube 10 and a telescoping inner roller tube 11.
  • Inner roller tube 11 is provided with a pin end plug 12 secured thereto.
  • a gudgeon pin 13 extends from the pin end plug for rotatably supporting this end of the shade in a bracket (not shown).
  • a paper tube 14 extends about the inner roller tube 11 and it may be cut, along with shade material on the roller, to facilitate shortening of the shade to fit a particular window size. This procedure is disclosed in U.S. Pat. No. 3,203,468, which is incorporated herein by reference.
  • a spring motor unit shown generally at 15 includes a spear 16 which is provided with at least one flattened surface 17.. This surface 17 cooperates with a surface of a shade supporting bracket (not. shown) for supporting the motor end of the roller assembly and for holding the spear 16 against rotation. Further included in the motor 15 is a body 18, a spring 19, a motor dowel 21, and a motor support 22 for supporting the dowel 21 within the shade roller.
  • FIG. 2 illustrates in greater detail the elements of the spring motor.
  • Spear 16 is attached to a cam lock 23 which, together with at least one ball 24 and body 18, forms a clutch.
  • a clutch of this type typically includes at least one appropriately placed recess 25 in body 18 and cam lock 23. The recess cooperates with the ball in a known manner to inhibit rotation of the body with respect to the cam lock and spear.
  • the body can be rotated, as is known, by a slight tug on the shade to release the latch and to allow the body to turn freely with respect to the cam lock and spear.
  • a motor cap 26 is provided to hold ball 24 within recess 25.
  • the motor dowel 21 Connected to the spear 16 is the motor dowel 21 which is not rotatable with respect to the spear.
  • the dowel extends into the shade roller tube 10 and is surrounded by the spring 19.
  • the spring 19 is connected to the inner end 27 of dowel 21 (FIG. 1). This connection may comprise a slot 28 into which an end of spring 19 is seated.
  • the motor support 22 is provided to axially support the dowel end 27 within the shade roller 10.
  • the other or outer end of the spring 19 is secured to the body 18.
  • the body 18 is provided with threads 30 which extend from an end of a tapered nose portion 31 toward an enlarged radially extending portion of the body which is of sufficient diameter to engage the shade roller 10.
  • This enlarged portion has an annular channel 32 into which a portion of roller may be crimped in order to secure the body to the roller to prevent rotation with respect thereto.
  • the body is provided with a recess 31.
  • This recess is positioned within a thread line of the threads and preferably toward the base end of the threaded portion.
  • Spring 19 has a bent stop portion 34 formed by bends 35 and 36 as shown in FIG. 3. When the spring is threaded onto the body 18, the portion 34 naturally engages recess 33.
  • the end 37 of the spring extends from bend 36 outwardly toward an inner wall 38 of roller tube 10, but does not engage the tube when the spring is in a normal or untensioned position.
  • the manufacture of the spring motor includes securing the spring 19 to the body 18 by merely threading the spring onto threads 30 of the body until bent portion 34 of the spring falls or snaps into recess 33.
  • the spring can be held stationary by an appropriate check and the body rotated into the end of the spring by any appropriate apparatus.
  • the tapered nose 31 facilitates intial proper engagement of the body into the spring, as can be appreciated.
  • the spring motor unit 15 is assembled to a shade roller 10 as a complete unit by insertion of the motor 15 into the roller.
  • the end of the roller is crimped to groove 32 in body 18 or is otherwise secured to the body in order to hold the body against rotation with respect to the roller. Since the end 37 of the spring 19 does not normally engage the inner wall 38 of roller 10, it does not interfere with insertion of the motor 15 into the roller tube 10.
  • a spring motor adapted for seating within a window shade roller and being of the type generally including spear means for non-rotationally engaging a bracket, dowel means connected to said spear means at one end and to a spring means at another end, means connecting said spring means to said roller, and clutch means for releasably holding said shade at variable positions, said means for connecting said spring means to said roller comprising:
  • a motor body provided with a recess
  • said spring means having a stop means extending into and cooperating with said recess in order to hold said spring against rotation with respect to said body;
  • said stop means comprising a bent portion located near an end of the spring means
  • said end of said spring means projecting outwardly from the motor body beyond said bent portion, and being sufficiently long to engage an inner wall of said roller in which said motor is seated and to hold said bent portion within said recess when said spring turns slightly with respect to said body.
  • stop means formed on said spring for engaging said recess and for holding said spring against rotation with respect to said body
  • a spring motor as in claim 7 wherein said extension is of such a length to engage said inner wall and hold said bent portion within said recess when said spring turns slightly with respect to said body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Blinds (AREA)
  • Motor Or Generator Frames (AREA)
US00211944A 1971-12-27 1971-12-27 Window shade motor Expired - Lifetime US3763916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21194471A 1971-12-27 1971-12-27

Publications (1)

Publication Number Publication Date
US3763916A true US3763916A (en) 1973-10-09

Family

ID=22788905

Family Applications (1)

Application Number Title Priority Date Filing Date
US00211944A Expired - Lifetime US3763916A (en) 1971-12-27 1971-12-27 Window shade motor

Country Status (16)

Country Link
US (1) US3763916A (cs)
JP (1) JPS5612714B2 (cs)
AT (1) AT321487B (cs)
BE (1) BE787946A (cs)
BR (1) BR7206466D0 (cs)
CA (1) CA954049A (cs)
DE (1) DE2257734C3 (cs)
DK (1) DK135431B (cs)
ES (1) ES410084A1 (cs)
FI (1) FI51864C (cs)
FR (1) FR2165847B1 (cs)
GB (1) GB1409891A (cs)
IT (1) IT958439B (cs)
NL (1) NL7210647A (cs)
NO (1) NO132911C (cs)
SE (1) SE394209B (cs)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009745A (en) * 1975-05-02 1977-03-01 Breneman, Inc. Window shade support roller and method of assembling
US4345636A (en) * 1978-07-31 1982-08-24 Metako Kigyo Co., Ltd. Roller screen unit
US4346749A (en) * 1980-08-18 1982-08-31 Sears, Roebuck And Company Motor and roller support for window shades and the like
US4427050A (en) 1982-07-26 1984-01-24 Clopay Corporation Window shade clutch assembly
US4429729A (en) 1982-07-09 1984-02-07 Clopay Corporation Window shade clutch assembly
US6502281B2 (en) * 2000-07-14 2003-01-07 Canimex Inc. Plug for operatively connecting torsion springs to overhead shafts of counterbalancing systems used for garage doors and the like
US20050028943A1 (en) * 2003-08-06 2005-02-10 Chang Wei Chi Screen
US20050045284A1 (en) * 2003-09-02 2005-03-03 Ullyett Gordon Jeffrey Retractable cover with biasing mechanism for covering structures
US20060169359A1 (en) * 2005-01-28 2006-08-03 Carmanah Design And Manufacturing Inc. Debarking apparatus with adjustable rate of debarking
US20090127369A1 (en) * 2007-11-20 2009-05-21 Mullet Willis J System for leveling a protective window covering
US20100052230A1 (en) * 2008-08-26 2010-03-04 Macauto Industrial Co., Ltd. Spring device capable of storing a winding force
US20110024064A1 (en) * 2009-08-01 2011-02-03 Philip Ng Spring assist for multi band roller shade
CN103182924A (zh) * 2011-12-28 2013-07-03 银娜珐天窗系统集团股份有限公司 用于遮阳板的卷绕机构、遮阳板和车顶组件
US10221622B2 (en) * 2015-09-08 2019-03-05 Crestron Electronics, Inc. Roller shade with a pretensioned spring and method for pretensioning the spring
US10406895B2 (en) 2016-12-08 2019-09-10 Inalfa Roof Systems Group B.V. Winding mechanism for a sunscreen
CN110770057A (zh) * 2017-05-29 2020-02-07 Al-Kor机械模具工业贸易有限公司 用于车辆的遮光帘组件
US20220412160A1 (en) * 2021-06-28 2022-12-29 Wuxi JHT Homewares Co., Ltd. Roman shade

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131994U (cs) * 1981-02-10 1982-08-17
FR2645202B1 (fr) * 1989-03-31 1992-03-27 Store Plus Dispositif d'ecran a enroulement
FR2654771B2 (fr) * 1989-03-31 1992-07-03 Store Plus Dispositif d'ecran a enroulement.
DE4211940A1 (de) * 1992-04-09 1993-10-14 Hermann Huss Rolladenbau Fa Federwelle
ES1033287Y (es) * 1996-02-21 1997-07-16 Forjas Del Vinalopo Sl Contera telescopica para ejes de persianas.
JP3656212B2 (ja) * 1999-09-03 2005-06-08 三和シヤッター工業株式会社 建築用シャッターの巻取り装置
US8307878B2 (en) 2009-01-14 2012-11-13 Hunter Douglas Inc. Noise dampening motor drive system for retractable covering for architectural openings
WO2010089118A1 (en) 2009-02-09 2010-08-12 Hunter Douglas Industries B.V. Spring system for roller blinds
NL1039407C2 (en) 2012-02-27 2013-08-28 Hunter Douglas Ind Bv Architectural covering having a drive mechanism for extending and retracting a covering member between opposite first and second end positions.
AU2015346452B2 (en) 2014-11-10 2020-08-13 Hunter Douglas Inc. Covering for an architectural opening including multiple stage spring assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329992A (en) * 1917-06-27 1920-02-03 Anton R Nelson Window-shade holder
GB222936A (en) * 1923-07-07 1924-10-07 Joseph Hartley Improved means for securing and mounting spiral springs as used with revolving shutters and the like
US1928549A (en) * 1932-10-03 1933-09-26 Mcfall Co Carey Roller trunnion and process of making the same
CA458684A (en) * 1949-08-02 R. M. Tisdale James Spring roller for window screens, blinds and the like
US2586340A (en) * 1947-07-24 1952-02-19 Clopay Corp Window shade roller
US2614629A (en) * 1950-06-27 1952-10-21 Joanna Western Mills Co Shade roller
US3115927A (en) * 1962-09-25 1963-12-31 Eastern Prod Corp Window shade roller

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA458684A (en) * 1949-08-02 R. M. Tisdale James Spring roller for window screens, blinds and the like
US1329992A (en) * 1917-06-27 1920-02-03 Anton R Nelson Window-shade holder
GB222936A (en) * 1923-07-07 1924-10-07 Joseph Hartley Improved means for securing and mounting spiral springs as used with revolving shutters and the like
US1928549A (en) * 1932-10-03 1933-09-26 Mcfall Co Carey Roller trunnion and process of making the same
US2586340A (en) * 1947-07-24 1952-02-19 Clopay Corp Window shade roller
US2614629A (en) * 1950-06-27 1952-10-21 Joanna Western Mills Co Shade roller
US3115927A (en) * 1962-09-25 1963-12-31 Eastern Prod Corp Window shade roller

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009745A (en) * 1975-05-02 1977-03-01 Breneman, Inc. Window shade support roller and method of assembling
US4345636A (en) * 1978-07-31 1982-08-24 Metako Kigyo Co., Ltd. Roller screen unit
US4346749A (en) * 1980-08-18 1982-08-31 Sears, Roebuck And Company Motor and roller support for window shades and the like
US4429729A (en) 1982-07-09 1984-02-07 Clopay Corporation Window shade clutch assembly
US4427050A (en) 1982-07-26 1984-01-24 Clopay Corporation Window shade clutch assembly
US6502281B2 (en) * 2000-07-14 2003-01-07 Canimex Inc. Plug for operatively connecting torsion springs to overhead shafts of counterbalancing systems used for garage doors and the like
US20050028943A1 (en) * 2003-08-06 2005-02-10 Chang Wei Chi Screen
US6991019B2 (en) * 2003-08-06 2006-01-31 Wei Chi Chang Screen
US20050045284A1 (en) * 2003-09-02 2005-03-03 Ullyett Gordon Jeffrey Retractable cover with biasing mechanism for covering structures
US20060169359A1 (en) * 2005-01-28 2006-08-03 Carmanah Design And Manufacturing Inc. Debarking apparatus with adjustable rate of debarking
US20090127369A1 (en) * 2007-11-20 2009-05-21 Mullet Willis J System for leveling a protective window covering
US20100052230A1 (en) * 2008-08-26 2010-03-04 Macauto Industrial Co., Ltd. Spring device capable of storing a winding force
US20110024064A1 (en) * 2009-08-01 2011-02-03 Philip Ng Spring assist for multi band roller shade
CN103182924A (zh) * 2011-12-28 2013-07-03 银娜珐天窗系统集团股份有限公司 用于遮阳板的卷绕机构、遮阳板和车顶组件
US20140014757A1 (en) * 2011-12-28 2014-01-16 Inalfa Roof Systems Group B.V. Winding mechanism for a sunscreen, said sunscreen and roof assembly
US9067480B2 (en) * 2011-12-28 2015-06-30 Inalfa Roof Systems Group B.V. Winding mechanism for a sunscreen, said sunscreen and roof assembly
CN103182924B (zh) * 2011-12-28 2016-09-14 英纳法天窗系统集团有限公司 用于遮阳板的卷绕机构、遮阳板和车顶组件
US10221622B2 (en) * 2015-09-08 2019-03-05 Crestron Electronics, Inc. Roller shade with a pretensioned spring and method for pretensioning the spring
US10406895B2 (en) 2016-12-08 2019-09-10 Inalfa Roof Systems Group B.V. Winding mechanism for a sunscreen
CN110770057A (zh) * 2017-05-29 2020-02-07 Al-Kor机械模具工业贸易有限公司 用于车辆的遮光帘组件
EP3634795A2 (en) * 2017-05-29 2020-04-15 Al-Kor Makina Kalip Sanayi Ve Ticaret A.S. A shade assembly used in vehicles
EP3634795B1 (en) * 2017-05-29 2025-07-09 Al-Kor Makina Kalip Sanayi Ve Ticaret A.S. A shade assembly used in vehicles
US20220412160A1 (en) * 2021-06-28 2022-12-29 Wuxi JHT Homewares Co., Ltd. Roman shade

Also Published As

Publication number Publication date
NL7210647A (cs) 1973-06-29
DK135431B (da) 1977-04-25
DE2257734B2 (de) 1974-07-04
DE2257734C3 (de) 1975-02-27
NO132911C (cs) 1976-01-28
FI51864C (fi) 1977-04-12
AT321487B (de) 1975-04-10
FR2165847A1 (cs) 1973-08-10
IT958439B (it) 1973-10-20
ES410084A1 (es) 1975-12-01
FI51864B (cs) 1976-12-31
BR7206466D0 (pt) 1975-02-12
BE787946A (fr) 1973-02-26
CA954049A (en) 1974-09-03
JPS4877959A (cs) 1973-10-19
FR2165847B1 (cs) 1976-10-29
NO132911B (cs) 1975-10-20
JPS5612714B2 (cs) 1981-03-24
DE2257734A1 (de) 1973-07-12
SE394209B (sv) 1977-06-13
GB1409891A (en) 1975-10-15
DK135431C (cs) 1977-10-10

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