U.S. patent application number 12/539609 was filed with the patent office on 2011-02-17 for curtain rope safety device.
Invention is credited to CHE-MIN SU.
Application Number | 20110036512 12/539609 |
Document ID | / |
Family ID | 43587896 |
Filed Date | 2011-02-17 |
United States Patent
Application |
20110036512 |
Kind Code |
A1 |
SU; CHE-MIN |
February 17, 2011 |
CURTAIN ROPE SAFETY DEVICE
Abstract
A safety device for a curtain assembly includes multiple
connection members fixedly connected to the curtain and located
close to the lower end of the curtain. Each connection member
includes a connection portion and a plate and the connection
portion is fixed to the curtain and the plate includes an engaging
recess. Multiple engaging members are connected to the cables of
the curtain assembly respectively and each engaging member includes
an engaging portion to which the second end of each cable is
connected. The engaging portion is disengageably engaged with the
engaging recess of the plate corresponding thereto such that when
the cables are pulled by a certain level of force, the engaging
portion is separated from the engaging recess.
Inventors: |
SU; CHE-MIN; (Lugang
Township, TW) |
Correspondence
Address: |
PHILLIP LIU
6980, WHITEOAK DRIVE
RICHMOND
BC
V7E 4Z9
CA
|
Family ID: |
43587896 |
Appl. No.: |
12/539609 |
Filed: |
August 12, 2009 |
Current U.S.
Class: |
160/84.04 |
Current CPC
Class: |
E06B 9/262 20130101;
E06B 2009/2622 20130101 |
Class at
Publication: |
160/84.04 |
International
Class: |
A47H 5/02 20060101
A47H005/02 |
Claims
1. A curtain assembly comprising: a top box and a curtain having a
first end connected with the top box, multiple folding lines
defined transversely to the curtain and multiple rods connected to
the curtain along the folding lines, each folding line including
multiple rings connected thereto, multiple cables each having a
first end connected to the top box and a second end of each cable
extending through the rings; multiple connection members fixedly
connected to the curtain and located close to a second end of the
curtain, each connection member including a connection portion and
a plate which is connected to the connection portion, the
connection portion fixed to the curtain and the plate including an
engaging recess, and multiple engaging members connected to second
ends of the cables respectively and each engaging member including
a top plate and an engaging portion which is connected to an
underside of the top plate, the second end of each cable extending
through a through hole defined through the top plate and connected
to the engaging portion corresponding thereto, the engaging portion
disengageably engaged with the engaging recess of the plate
corresponding thereto.
2. The curtain assembly as claimed in claim 1, wherein each
engaging portion includes a passage defined therethrough which
includes an enlarged opening, the passage communicates with the
through hole of the top plate, the second end of the cable has a
knot engaged with the enlarged opening.
3. The curtain assembly as claimed in claim 1, wherein the
connection members are made of plastic.
4. The curtain assembly as claimed in claim 1, wherein the
connection members are made of metal.
5. The curtain assembly as claimed in claim 1, wherein the engaging
members are made of plastic.
6. The curtain assembly as claimed in claim 1, wherein the engaging
members are made of metal.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a safety device, and more
particularly, to a curtain rope safety device which allows the rope
to be separated from the curtain when needed.
BACKGROUND OF THE INVENTION
[0002] A conventional curtain assembly generally includes a top box
in which the mechanism for operation of the curtain assembly is
received and a curtain has one end connected to the top box. The
curtain includes multiple parallel folding lines transversely made
to the curtain and each folding line is cooperated with a
transverse passage in which a rod is received. Multiple rings are
fixed along each of the folding line and cables connected to the
mechanism extend through the rings. The cables are fixed to the
rings located at the lowermost rings so that when the users operate
the mechanism, the cables are scrolled upward, the curtain is
lifted and folded along the folding lines by the cables fixed to
the lowermost rings.
[0003] Nevertheless, the cables are not able to released when in
some emergency situations such as kids got caught by the cables.
When a kid got caught by the cables, the kid struggles and tries to
remove from the cables which are not loosened because two ends of
each cable are fixedly connected to the top box and the lowermost
rings. Besides, when the users want to maintain the curtain
assembly, the cables need to be separated from the lowermost rings
and this may take a while.
[0004] The present invention intends to provide a curtain rope
safety device which allows the cable to be separated from the
lowermost connection members fixed on the curtain by applying a
certain level of force.
SUMMARY OF THE INVENTION
[0005] The present invention relates to a curtain assembly which
comprises a top box and a curtain has a first end connected with
the top box. The curtain includes multiple folding lines and
multiple rods are connected to the curtain along the folding lines.
Each folding line includes multiple rings connected thereto.
Multiple cables each have a first end connected to the top box and
a second end of each cable extends through the rings. Multiple
connection members are fixedly connected to the curtain and located
close to a second end of the curtain. Each connection member
includes a connection portion and a plate, wherein the connection
portion is fixed to the curtain and the plate includes an engaging
recess. Multiple engaging members are connected to second ends of
the cables respectively and each engaging member includes a top
plate and an engaging portion. The second end of each cable extends
through a through hole defined through the top plate and is
connected to the engaging portion corresponding thereto. The
engaging portion is disengageably engaged with the engaging recess
of the plate corresponding thereto.
[0006] The primary object of the present invention is to provide a
safety device which allows the cable to be separated from the
connection member fixed on the curtain so that the cable has a free
end after the cable is separated from the connection member.
[0007] 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
[0008] FIG. 1 is a perspective view to show the curtain assembly
with the safety device of the present invention;
[0009] FIG. 2 is a perspective view to show the safety device of
the present invention;
[0010] FIG. 3 shows the enlarged opening of the passage defined
through the engaging portion, the cable with a knot and the
connection member of the safety device of the present
invention;
[0011] FIG. 4 is a cross sectional view to show that the knot of
the cable is engaged with the passage in the engaging portion;
[0012] FIG. 5 shows that the curtain is folded by pulling the cable
upward;
[0013] FIG. 6 shows that the curtain is folded and the engaging
portions are engaged with the engaging recesses in the connection
members;
[0014] FIG. 7 shows that one of the engaging portions is disengaged
from the engaging recess of the connection member;
[0015] FIG. 8 is a cross sectional view to show a second embodiment
of the engaging portion engaged with the engaging recess of the
connection member;
[0016] FIG. 9 is a top cross sectional view to show the engagement
disclosed in FIG. 8;
[0017] FIG. 10 is a cross sectional view to show a third embodiment
of the engaging portion engaged with the engaging recess of the
connection member, and
[0018] FIG. 11 is a top cross sectional view to show the engagement
disclosed in FIG. 10.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0019] Referring to FIGS. 1 to 4, the curtain assembly 10 of the
present invention comprises a top box 11 fixed on the wall or
window frame and mechanism (not shown) for operation of the curtain
assembly 10 is received in the top box 11. A curtain 13 has a first
end connected with the top box 11 and operatively connected with
the mechanism and multiple folding lines 130 are defined
transversely to the curtain 13. Multiple rods 14 are connected to
the curtain 13 along the folding lines 130 and each folding line
130 includes multiple rings 131 connected thereto. Multiple cables
12 each have a first end connected to the top box 11 and
operatively connected with the mechanism in the top box 11, and a
second end of each cable 12 extends through the rings 131.
[0020] Multiple connection members 20 are fixedly connected to the
curtain 13 and located close to a second end of the curtain 13.
Each connection member 20 includes a loop-like connection portion
22 and a plate 21 which is connected to the connection portion 22.
The connection portions 22 are fixed to the curtain 13 and the
plate 21 includes two extensions between which an engaging recess
210 is defined. Each extension includes a protrusion extending from
an inside thereof so that the engaging recess 210 includes a narrow
opening.
[0021] Multiple engaging members 30 are connected to second ends of
the cables 12 respectively and each engaging member 30 includes a
top plate 31 and an engaging portion 32 which is a spherical member
and connected to an underside of the top plate 31. Each top plate
31 has a through hole 310 and each
[0022] The second end of each cable 12 extending through a through
hole 310 defined through the top plate 31 and connected to the
engaging portion 32 corresponding thereto, the engaging portion 32
disengageably engaged with the engaging recess 210 of the plate 21
corresponding thereto. Each engaging portion 32 includes a passage
defined therethrough which includes an enlarged opening 320. The
passage communicates with the through hole 310 of the top plate 31.
The second end of the cable 12 has a knot which is engaged with the
enlarged opening 320 as shown in FIG. 4.
[0023] As shown in FIGS. 5 and 6, when the mechanism is operated,
the cables 12 are pulled upward, the engaging members 30 pull the
connection members 20 to lift the curtain 13 which is folded along
the folding lines 130. When the cables 12 are released, the curtain
13 expands downward by the gravity as shown in FIG. 1.
[0024] As shown in FIG. 7, when any of the cables 12 are pulled
suddenly by a certain level of force, the engaging portion 32 can
be disengaged from the engaging recess 210 so that the cable 12
cannot tightly wrap a kid for example. Similarly, when the curtain
assembly 10 needs to be maintained, the engaging portions 32 can be
disengaged from the engaging recesses 210 manually.
[0025] FIGS. 8 to 11 show two different embodiments of the engaging
portions 32, wherein the engaging portions 32 can be an oval object
when viewed from top and the long axis of the engaging portion 32
can be arranged within the engaging recess 210 as desired.
[0026] It is noted that the connection members 20 can be made of
plastic or metal, and the engaging members 30 can also be made of
plastic or metal.
[0027] 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.
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