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US20140048499A1 - Transmission device for curtains - Google Patents

Transmission device for curtains Download PDF

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Publication number
US20140048499A1
US20140048499A1 US13/618,231 US201213618231A US2014048499A1 US 20140048499 A1 US20140048499 A1 US 20140048499A1 US 201213618231 A US201213618231 A US 201213618231A US 2014048499 A1 US2014048499 A1 US 2014048499A1
Authority
US
United States
Prior art keywords
frames
mandrel
transmission device
bottom board
wheel
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.)
Abandoned
Application number
US13/618,231
Inventor
Sheng Ying Hsu
Wu-Chung Nien
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.)
Ching Feng Home Fashions Co Ltd
Original Assignee
Ching Feng Home Fashions Co Ltd
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 Ching Feng Home Fashions Co Ltd filed Critical Ching Feng Home Fashions Co Ltd
Assigned to CHING FENG HOME FASHIONS CO. LTD reassignment CHING FENG HOME FASHIONS CO. LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HSU, SHENG YING, NIEN, WU-CHUNG
Publication of US20140048499A1 publication Critical patent/US20140048499A1/en
Abandoned 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
    • E06B9/24—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
    • 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
    • E06B2009/3222—Cordless, i.e. user interface without cords
    • 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
    • E06B2009/3225—Arrangements to aid the winding of cords rollers
    • E06B2009/3227—Axially moving rollers

Definitions

  • the present invention relates to a transmission device, and more particularly, to a transmission device for curtains and the transmission device is cooperated with different sizes of curtains.
  • the conventional transmission device for curtains generally comprises a first frame located at one end of the head box and multiple second frames are located at the other end of the head box.
  • the Multiple mandrels are rotatably engaged with the second frames.
  • the cords are wrapped to the first frame and pass through the first frames are wrapped around the mandrels.
  • the cords then pass through the bottom board of the head box and fixed to the curtain. By operation to the cords, the curtain is lifted or lowered.
  • the first frame, the multiple second frames and the multiple mandrels are not able to be cooperated with different sizes of the head boxes.
  • the second frames are located at distances so that they are installed to the head box individually. The time required for installation of the second frames and mandrels is long and inconvenient.
  • the present invention intends to provide a transmission device for curtains and the transmission device is able to be cooperated with different sizes of the head boxes.
  • the present invention relates to a transmission device for curtains includes a bottom board and a mandrel unit is connected on the bottom board.
  • the mandrel unit has two first frames and a mandrel which is engaged with the engaging portions of the two first frames.
  • a second frame has a bottom plate, a top plate, a wheel and multiple rollers, wherein the wheel and the rollers are connected between the bottom plate and the top plate.
  • the rollers are located on two sides of the wheel which has a spool.
  • a cord is wrapped between the spool and the mandrel.
  • a coil spring is connected to the spool.
  • the guide holes in the bottom board allow the two first frames to be connected to the bottom board easily.
  • the primary object of the present invention is to provide a transmission device for curtains and the transmission device can be connected with different sizes of head boxes.
  • FIG. 1 is a perspective view to show the transmission device of the present invention
  • FIG. 2 is an exploded view to show the transmission device of the present invention and a head box;
  • FIG. 3 is a cross sectional view to show that the cord is wrapped around the mandrel which is connected to the two first frames, the two first frames are connected to the bottom board which is connected on the head box;
  • FIG. 4 is a cross sectional view to show that the cord is wrapped around the spool of the second frame and then wrapped to the mandrel connected to the two first frames, the two first frames are connected to the bottom board which is connected on the head box;
  • FIG. 5 is a cross sectional view to show that the cord is wrapped around the spool of the second frame and then wrapped to the mandrel connected to the two first frames, the cord extends through the head box;
  • FIG. 6 shows that the curtain having the transmission device of the present invention is expanded
  • FIG. 7 shows that the curtain having the transmission device of the present invention is collected.
  • the transmission device for curtains of the present invention is received in the top box of the curtain and comprises a bottom board 10 which has multiple guide holes 11 defined therethrough.
  • a mandrel unit 20 comprises at least two first frames 21 and a mandrel 22 .
  • Each of the at least two first frames 21 has an engaging portion 210 and a passage 211 .
  • the mandrel 22 is engaged with the engaging portions 210 of the at least two first frames 21 .
  • Each of the at least two first frames 21 has a through hole 212 and a connection member 212 A is engaged with the through hole 212 and one of the guide holes 11 in the bottom board 10 so that the at least two first frames 21 are fixed to the bottom board 10 .
  • the guide holes 11 in the bottom board 10 allow the at least two first frame 21 to be connected to the bottom board 10 easily.
  • a second frame 30 comprises a bottom plate 31 , a top plate 32 , a wheel 33 and multiple rollers 34 .
  • the wheel 33 and the rollers 34 are connected between the bottom plate 31 and the top plate 32 , and the rollers 34 are located on two sides of the wheel 33 .
  • the wheel 33 has a spool 330 and a cord 330 A has one end wrapped to the spool 330 .
  • a coil spring 331 is connected to the spool 330 .
  • the other end of the cord 330 A extends through the passage 211 of one of the at least two first frames 21 and is wrapped to the mandrel 22 .
  • connection parts 12 are then fixed to the bottom panel of the head box.
  • FIG. 6 shows that the curtain having the transmission device of the present invention is expanded and FIG. 7 shows that the curtain having the transmission device of the present invention is collected.
  • the users can purchase the combination of the bottom board 10 and the first and second frames 21 , 30 , and the combination can be installed to any existed head box.
  • the assembling time required is shortened and the manufacturers do not need to produce different sizes of the first and second frames 21 , 30 so as to reduce the cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

A transmission device for curtains includes a bottom board and a mandrel unit is connected on the bottom board. The mandrel unit has first frames and a mandrel which is engaged with the engaging portions of the first frames. The bottom board has multiple guide holes and the first frames are easily connected to the bottom board at the suitable guide holes. A second frame includes a bottom plate, a top plate, a wheel and multiple rollers, wherein the wheel and the rollers are connected between the bottom plate and the top plate. The wheel has a spool and a cord is wrapped between the spool and the mandrel. A coil spring is connected to the spool. Two control cords are wrapped to the mandrel and extends through the head box of the curtain and are connected to the bottom bar of the curtain.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a transmission device, and more particularly, to a transmission device for curtains and the transmission device is cooperated with different sizes of curtains.
    • BACKGROUND OF THE INVENTION
  • The conventional transmission device for curtains generally comprises a first frame located at one end of the head box and multiple second frames are located at the other end of the head box. The Multiple mandrels are rotatably engaged with the second frames. The cords are wrapped to the first frame and pass through the first frames are wrapped around the mandrels. The cords then pass through the bottom board of the head box and fixed to the curtain. By operation to the cords, the curtain is lifted or lowered.
  • However, the first frame, the multiple second frames and the multiple mandrels are not able to be cooperated with different sizes of the head boxes. Furthermore, the second frames are located at distances so that they are installed to the head box individually. The time required for installation of the second frames and mandrels is long and inconvenient.
  • The present invention intends to provide a transmission device for curtains and the transmission device is able to be cooperated with different sizes of the head boxes.
    • SUMMARY OF THE INVENTION
  • The present invention relates to a transmission device for curtains includes a bottom board and a mandrel unit is connected on the bottom board. The mandrel unit has two first frames and a mandrel which is engaged with the engaging portions of the two first frames. A second frame has a bottom plate, a top plate, a wheel and multiple rollers, wherein the wheel and the rollers are connected between the bottom plate and the top plate. The rollers are located on two sides of the wheel which has a spool. A cord is wrapped between the spool and the mandrel. A coil spring is connected to the spool. The guide holes in the bottom board allow the two first frames to be connected to the bottom board easily.
  • The primary object of the present invention is to provide a transmission device for curtains and the transmission device can be connected with different sizes of head boxes.
  • The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view to show the transmission device of the present invention;
  • FIG. 2 is an exploded view to show the transmission device of the present invention and a head box;
  • FIG. 3 is a cross sectional view to show that the cord is wrapped around the mandrel which is connected to the two first frames, the two first frames are connected to the bottom board which is connected on the head box;
  • FIG. 4 is a cross sectional view to show that the cord is wrapped around the spool of the second frame and then wrapped to the mandrel connected to the two first frames, the two first frames are connected to the bottom board which is connected on the head box;
  • FIG. 5 is a cross sectional view to show that the cord is wrapped around the spool of the second frame and then wrapped to the mandrel connected to the two first frames, the cord extends through the head box;
  • FIG. 6 shows that the curtain having the transmission device of the present invention is expanded, and
  • FIG. 7 shows that the curtain having the transmission device of the present invention is collected.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIGS. 1 to 5, the transmission device for curtains of the present invention is received in the top box of the curtain and comprises a bottom board 10 which has multiple guide holes 11 defined therethrough.
  • A mandrel unit 20 comprises at least two first frames 21 and a mandrel 22. Each of the at least two first frames 21 has an engaging portion 210 and a passage 211. The mandrel 22 is engaged with the engaging portions 210 of the at least two first frames 21. Each of the at least two first frames 21 has a through hole 212 and a connection member 212A is engaged with the through hole 212 and one of the guide holes 11 in the bottom board 10 so that the at least two first frames 21 are fixed to the bottom board 10. The guide holes 11 in the bottom board 10 allow the at least two first frame 21 to be connected to the bottom board 10 easily.
  • A second frame 30 comprises a bottom plate 31, a top plate 32, a wheel 33 and multiple rollers 34. The wheel 33 and the rollers 34 are connected between the bottom plate 31 and the top plate 32, and the rollers 34 are located on two sides of the wheel 33. The wheel 33 has a spool 330 and a cord 330A has one end wrapped to the spool 330. A coil spring 331 is connected to the spool 330. The other end of the cord 330A extends through the passage 211 of one of the at least two first frames 21 and is wrapped to the mandrel 22. There are two control cords respectively wrapped to the mandrel 22 and the two respective distal ends of the two control cords extend through two holes defined through the bottom panel of the top box of the curtain and are connected to the bottom bar of the curtain. The bottom board 10 is installed to the bottom panel of the head box by extending connection parts 12 through the bottom board 10 and the connection parts 12 are then fixed to the bottom panel of the head box.
  • FIG. 6 shows that the curtain having the transmission device of the present invention is expanded and FIG. 7 shows that the curtain having the transmission device of the present invention is collected.
  • The users can purchase the combination of the bottom board 10 and the first and second frames 21, 30, and the combination can be installed to any existed head box. The assembling time required is shortened and the manufacturers do not need to produce different sizes of the first and second frames 21, 30 so as to reduce the cost.
  • While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (3)

What is claimed is:
1. A transmission device for curtains, comprising:
a bottom board;
a mandrel unit having at least two first frames and a mandrel, each of the at least two first frames having an engaging portion and a passage, the mandrel engaged with the engaging portions of the at least two first frames, and
a second frame having a bottom plate, a top plate, a wheel and multiple rollers, the wheel and the rollers connected between the bottom plate and the top plate, the rollers located on two sides of the wheel, the wheel having a spool and a cord wrapped between the spool and the mandrel, a coil spring connected to the spool.
2. The transmission device as claimed in claim 1, wherein the bottom board has multiple guide holes.
3. The transmission device as claimed in claim 2, wherein each of the at least two first frames has a through hole and a connection member is engaged with the through hole and one of the guide holes in the bottom board.
US13/618,231 2012-08-16 2012-09-14 Transmission device for curtains Abandoned US20140048499A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW101215770 2012-08-16
TW101215770U TWM443062U (en) 2012-08-16 2012-08-16 Curtain body transmission mechanism

Publications (1)

Publication Number Publication Date
US20140048499A1 true US20140048499A1 (en) 2014-02-20

Family

ID=48088880

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/618,231 Abandoned US20140048499A1 (en) 2012-08-16 2012-09-14 Transmission device for curtains

Country Status (2)

Country Link
US (1) US20140048499A1 (en)
TW (1) TWM443062U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150136892A1 (en) * 2013-11-20 2015-05-21 Min-Che Hung Cord winding structure for window blind
US9297203B2 (en) * 2014-03-13 2016-03-29 Mei-Chin Hsueh-Cheng Curtain drawstring structure
US9896881B2 (en) * 2015-11-09 2018-02-20 Li-Ming Cheng Fixing assembly for a shading body
US20220195795A1 (en) * 2020-12-22 2022-06-23 Wen Ying Liang Scrolling unit for electric blinds
US20230414027A1 (en) * 2022-06-23 2023-12-28 Yan Chen Novel cord retracting-releasing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150136892A1 (en) * 2013-11-20 2015-05-21 Min-Che Hung Cord winding structure for window blind
US9366076B2 (en) * 2013-11-20 2016-06-14 Min-Che Hung Cord winding structure for window blind
US9297203B2 (en) * 2014-03-13 2016-03-29 Mei-Chin Hsueh-Cheng Curtain drawstring structure
US9896881B2 (en) * 2015-11-09 2018-02-20 Li-Ming Cheng Fixing assembly for a shading body
US20220195795A1 (en) * 2020-12-22 2022-06-23 Wen Ying Liang Scrolling unit for electric blinds
US20230414027A1 (en) * 2022-06-23 2023-12-28 Yan Chen Novel cord retracting-releasing apparatus

Also Published As

Publication number Publication date
TWM443062U (en) 2012-12-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHING FENG HOME FASHIONS CO. LTD, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HSU, SHENG YING;NIEN, WU-CHUNG;REEL/FRAME:028984/0178

Effective date: 20120620

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION