AU2006100067A4

AU2006100067A4 - Winding device for venetian blind

Info

Publication number: AU2006100067A4
Application number: AU2006100067A
Authority: AU
Inventors: Ke-Min Lin
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-27
Filing date: 2006-01-27
Publication date: 2006-02-23
Anticipated expiration: 2014-01-27

Description

27-JAN-2006 15:01 A J PARK 64 4 4723358 P.04/24 S1 Followed by page la Regulation 3.2

AUSTRALIA

PATENTS ACT, 1990 COMPLETE

SPECIFICATION

FOR AN INNOVATION

PATENT

ORIGINAL

Name of KE-MIN LIN Applicant: Actual Inventor: Ke-Min Lin Address for service in Australia: A J PARK, Level 11, 60 Marcus Clarke Street, Canberra ACT 2601, Australia Invention Title: WINDING DEVICE FOR VENETIAN

BLIND

The following statement is a full description of this invention, includin th best method of pcrforming it known rt us $62093-1 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JAN-2006 15:01 f J PAFRK 64 4 4723358 P.05/24 SWINDING DEVICE FOR VENETIAN BLIND 0 The present innovation relates to a winding device and, more particularly, to a winding device for a window covering, such as the Venetian Sblind and the like.

A winding device for a Venetian blind is used to wind or unwind two 0 o pull cords to lift or lower the two pull cords so as to fold or expand the slats of V. the Venetian blind. The conventional winding device comprises a threaded rod 0 rotatably screwed into a screw bore so that the two pull cords are wound or unwound by movement of the threaded rod. However, the winding device has an expensive price, thereby increasing costs of fabrication. In addition, it is necessary to screw the threaded rod into the screw bore, thereby wasting the working time and manual work in assembly of the winding device.

In accordance with the present innovation, there is provided a Venetian blind, comprising a headrail, a drive shaft rotatably mounted on the headrail, at least one pull cord movable by rotation of the drive shaft, and a winding device mounted on the headrail and connected to the at least one pull cord to move the at least one pull cord. The winding device includes at least one support seat secured to the headrail to correspond to a position of the at least one pull cord and having an inside formed with a through hole and a side formed with a guide hole located adjacent to the through hole, and at least one slide bushing mounted on the drive shaft to rotate therewith and pivotally mounted in the through hole of the at least one support seat. The at least one COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JAN-2006 15:01 A J PARK 64 4 4723358 P.06/24 NO pull cord has a distal end extended through the headrail and the guide hole of 0 c the at least one support seat and secured to the at least one slide bushing to rotate therewith. The at least one slide bushing is rotatable with the drive shaft Ci to wind the at least one pull cord so that the at least one pull cord is wound around a surface of the at least one slide bushing. When the at least one pull I0 S cord is introduced from the guide hole of the at least one support seat, the at Sleast one pull cord is wound around the surface of the at least one slide bushing Sserially and successively. The wound pull cord pushes the at least one slide bushing to move relative to the at least one support seat during rotation of the at least one slide bushing, so that the at least one pull cord is wound around the surface of the at least one slide bushing smoothly by movement of the at least one slide bushing.

The primary objective*of the present innovation is to provide a winding device for a window covering, such as the Venetian blind and the like.

Another objective of the present innovation is to provide a Venetian blind, wherein the wound pull cord pushes the at least one slide bushing to move relative to the at least one support seat during rotation of the at least one slide bushing, so that the at least one pull cord is wound around the surface of the at least one slide bushing smoothly by movement of the at least one slide bushing to prevent the at least one pull cord from being tangled or overlapped so as to lift the at least one pull cord smoothly.

This objective and the following objectives are those of at least preferred etmbodiments of the present invention. It is not necessary for every embodiment to satisfy all stated objectives.

2 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JA1N-2006 15:02 A J PARK 64 4 4723358 P.07/24 NO A further objective of the present innovation is to provide a Venetian blind, wherein the at least one support seat and the at least one slide bushing are formed easily, thereby decreasing costs of fabrication of the winding device.

r s A further objective of the present innovation is to provide a Venetian Sblind, wherein the at least one slide bushing is pivotally mounted in the at least Sone support seat so that the winding device is assembled easily and rapidly, thereby facilitating production of the winding device.

Further benefits and advantages of the present innovation will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

In the drawings: Fig. I is a perspective view of a Venetian blind in accordance with the preferred embodiment of the present innovation.

Fig. 2 is a partially perspective cross-sectional view of the Venetian blind as shown in Fig. 1.

Fig. 3 is a plan cross-sectional view of the Venetian blind as shown in Fig. 2.

Fig. 4 is a schematic operational view of the Venetian blind as shown in Fig. 3.

Fig. 5 is a schematic operational view of the Venetian blind as shown in Fig. 2.

3 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JAN-2006 15:02 Al J PARK 64 4 472335e P. 0e/24 iQ Fig. 6 is a plan cross-sectional view of a support seat of the Venetian 0 o blind in accordance with another preferred embodiment of the present cZ innovation.

Ci Fig. 7 is a plan cross-sectional view of a support seat of the Venetian blind in accordance with another preferred embodiment of the present

\D

Sinnovation.

Fig. 8 is a plan cross-sectional view of a support seat of the Venetian Sblind in accordance with another preferred embodiment of the present innovation.

Fig. 9 is a plan cross-sectional view of a Venetian blind in accordance with another preferred embodiment of the present innovation.

Fig. 10 is a plan cross-sectional view of a Venetian blind in accordance with another preferred embodiment of the present innovation.

Referring to the drawings and initially to Figs. 1-3, a Venetian blind in accordance with the preferred embodiment of the present innovation comprises a headrail 1, a drive shaft 11 rotatably mounted on the headrail 1 and driven by a drive mechanism 110, at least one pull cord 2 movable by rotation of the drive shaft 11, and a winding device mounted on the headrail 1 and connected to the at least one pull cord 2 to move the at least one pull cord 2.

The winding device includes at least one support seat 3 secured to the headrail 1 to correspond to a position of the at least one pull cord 2 and having an inside formed with a through hole 31 and a side formed with a guide hole 32 4 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 2-JAN-2006 15:02 R J PFRK 64 4 4723358 P.09/24 NO located adjacent to the through hole 31, and at least one slide bushing 4 0 0 mounted on the drive shaft 11 to rotate therewith and pivotally mounted in the through hole 31 of the at least one support seat 3.

C, The at least one pull cord 2 has a distal end extended through the headrail I and the guide hole 32 ofthe at least one support seat 3, protruded \0 o outward from the guide hole 32 of the at least one support seat 3 and secured to I, the at least one slide bushing 4 to rotate therewith.

o In practice, referring to Figs. 1-4, the at least one slide bushing 4 is rotatable with the drive shaft 11 to wind the at least one pull cord 2 during rotation of the at least one slide bushing 4 so that the at least one pull cord 2 is wound around a surface of the at least one slide bushing 4. At this time, the at least one pull cord 2 is introduced from the guide hole 32 of the at least one support seat 3, and the guide hole 32 of the at least one support seat 3 is located adjacent to the through hole 31, so that when the at least one pull cord 2 is introduced from the guide hole 32 of the at least one support seat 3, the at least one pull cord 2 is wound around the surface of the at least one slide bushing 4 serially and successively as shown in Fig. 4. At the same time, the wound pull cord 2 pushes the at least one slide bushing 4 to move relative to the at least one support seat 3 during rotation of the at least one slide bushing 4, so that the at least one pull cord 2 is wound around the surface of the at least one slide bushing 4 smoothly by movement of the at least one slide bushing 4 so as to lift the at least one pull cord 2 smoothly.

COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JANl-2006 15:03 A J PARK 64 4 4723358 P.10/24 NO When the at least one pull cord 2 is released, the at least one pull cord 0 2 is lowered and unwound from the at least one slide bushing 4 by the gravity of the Venetian blind to drive the at least one slide bushing 4 to move reversely ^C relative to the at least one support seat 3 to return to the original position as Va 5 shown in Fig. 3 so as to lower the at least one pull cord 2 smoothly.

As shown in Figs. 1 and 5, the at least one slide bushing 4 is pivotally ,O mounted in the at least one support seat 3 and is driven by the drive shaft I 1 to 0 Srotate therewith, so that when the at least one pull cord 2 is unwound and lowered to the lowermost position, the at least one slide bushing 4 is still driven and rotated by the drive shaft 11 to wind the at least one pull cord 2 again without having to change the rotation direction of the drive shaft 11.

Thus, the drive shaft 11 is rotated in two directions (the clockwise or counterclockwise direction) to lift or lower the at least one pull cord 2 in the two directions as shown in Fig. 5, thereby facilitating a user operating the drive mechanism 110 to drive the drive shaft 11 to lift or lower the at least one pull cord 2 so as to fold or expand the Venetian blind.

As shown in Fig. 3, the distance between the through hole 31 and the guide hole 32 of the at least one support seat 3 is smaller than or equal to half of the diameter of the at least one pull cord 2 to prevent the at least one pull cord 2 from being tangled or overlapped.

6 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JAN-2006 15:03 A J PARK 64 4 4723352 P.11/24 0 As shown in Fig. 6, the guide hole 32 of the at least one support seat 3

O

has two ends each formed with a flared opening 321 to facilitate passage and n movement of the at least one pull cord 2.

As shown in Fig. 7, the guide hole 32 of the at least one support seat 3 has a bent portion provided with a roller 322 to facilitate movement of the at 0 o least one pull cord 2.

0 N As shown in Fig. 8, the guide hole 32 is extended through the at least 0 c one support seat 3.

As shown in Figs. 9 and 10, the at least one slide bushing 4 is provided with a spring 5 so that when the at least one pull cord 2 is lowered and unwound from the at least one slide bushing 4, the at least one slide bushing 4 is moved smoothly and restored simultaneously by an elastic force of the spring 5. In practice, the spring is a tensile spring provided at an end or in an inside of the at least one slide bushing 4, or a compression spring provided at the other end of the at least one slide bushing 4.

Accordingly, the wound pull cord 2 pushes the at least one slide bushing 4 to move relative to the at least one support seat 3 during rotation of the at least one slide bushing 4, so that the at least one pull cord 2 is wound around the surface of the at least one slide bushing 4 smoothly by movement of the at least one slide bushing 4 to prevent the at least one pull cord 2 from being tangled or overlapped so as to lift the at least one pull cord 2 smoothly. In addition, the at least one support seat 3 and the at least one slide bushing 4 are 7 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JN -2006 15:03 A J PARK 64 4 4723358 P.12/24 O formed easily, thereby decreasing costs of fabrication of the winding device.

Surther, the at least one slide bushing 4 is pivotally mounted in the at least one support seat 3 so that the winding device is assembled easily and rapidly,

C

I thereby facilitating production of the winding device.

Although the innovation has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many Sother possible modifications and variations can be made without departing a from the scope of the present innovation. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the innovation.

Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to mean the inclusion of a stated integer or group of integers but does not necessarily mean the exclusion of any other integer or group of integers.

8 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27

Claims

27-JAN-20OG6 15:03 A J PAfRK 64 4 4723358 P.13/24 0 THE CLAIMS DEFINING THE INNOVATION ARE AS FOLLOWS: C 1. A Venetian blind, comprising: a headrail; a drive shaft rotatably mounted on the headrail; at least one pull cord movable by rotation of the drive shaft; Sa winding device mounted on the headrail and connected to the at INO least one pull cord to move the at least one pull cord; the winding device including at least one support seat secured to the headrail to correspond to a position of the at least one pull cord and having an inside formed with a through hole and a side formed with a guide hole located adjacent to the through hole, and at least one slide bushing mounted on the drive shaft to rotate therewith and pivotally mounted in the through hole of the at least one support seat; wherein: the at least one pull cord has a distal end extended through the headrail and the guide hole of the at least one support seat and secured to the at least one slide bushing to rotate therewith; the at least one slide bushing is rotatable with the drive shaft to wind the at least one pull cord so that the at least one pull cord is wound around a surface of the at least one slide bushing; when the at least one pull cord is introduced from the guide hole of the at least one support seat, the at least one pull cord is wound around the surface of the at least one slide bushing serially and successively; 9 COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27 27-JAN-20066 15:04 A J PAFRK 64 4 4723358 P.14/24 O the wound pull cord pushes the at least one slide bushing to move relative to the at least one support seat during rotation of the at least one slide bushing, so that the at least one pull cord is wound around the surface of the at least one slide bushing smoothly by movement of the at least one slide bushing. o 2. The Venetian blind in accordance with claim 1, wherein the I, distance between the through hole and the guide hole of the at least one support seat is smaller than or equal to half of the diameter of the at least one pull cord. 3. The Venetian blind in accordance with claim 1, wherein the at least one slide bushing is provided with a spring so that when the at least one pull cord is lowered and unwound from the at least one slide bushing, the at least one slide bushing is moved smoothly and restored simultaneously by an elastic force of the spring. 4. The Venetian blind in accordance with claim 1, wherein the guide hole of the at least one support seat has two ends each formed with a flared opening. The Venetian blind in accordance with claim i, wherein the guide hole of the at least one support seat has a bent portion provided with a roller. KE-MIN LIN Dated this 2 7 h day of January 2006 By their Patent Attorneys AJ PARK COMS ID No: SBMI-02505593 Received by IP Australia: Time 14:00 Date 2006-01-27