Swing frame for hanging a swing chair

Details Swing frame for hanging a swing chair Swing frame for hanging a swing chair

2001-10-16

2003-06-24

Cuomo, Peter M. (Department: 3636)

Chairs and seats

Oscillating suspender connected to or through adjunctive rest

Armrest or side frame-connected

C297S280000, C297S273000, C297S271200

Reexamination Certificate

active

06582018

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a swing frame, more particularly to a swing frame having locking devices for hanging stably a swing chair.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional swing includes a swing frame
1
, a cover frame
2
, and a swing chair
3
hung on the swing frame
1
. The conventional swing frame
1
comprises a pair of opposite leg frame units
11
, a top horizontal bar
12
connected between the leg frame units
11
, and a pair of vertical connecting sleeves
121
. Each leg frame unit
11
has a front leg rod
111
and a rear leg rod
112
connected to an intermediate portion of the front leg rod
111
by means of screws
15
and nuts
16
. Each front leg rod
111
has an open top end
113
. Each of the connecting sleeves
121
is welded to a corresponding end of the horizontal bar
12
, and has a lower section
122
formed with a decreasing diameter. The lower section
122
is inserted into the top end
113
of a corresponding one of the front leg rods
111
, and is retained thereon by means of a pair of clamp plates
13
and a plurality of screws
17
.
As mentioned above, the conventional swing frame
1
has two connecting sleeves
121
that are welded to the respective opposite ends of the horizontal bar
12
to connect with the respective leg frame units
11
by screws
15
and nuts
16
. Due to the forces induced upon swinging the swing chair
3
, the connection between the connecting sleeves
121
and the leg frame units
11
is liable to become loosened after using the swing frame
1
for a short period of time. Furthermore, since the front and rear leg rods
111
,
112
are simply connected by welding and screw connection, when the swing frame
1
supports a heavy load, the front and rear leg rods
111
,
112
are easily disintegrated.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide a swing frame having stable locking devices in order to overcome the aforementioned drawbacks of the prior art.
Accordingly, a swing frame of this invention comprises a pair of support frame units, a hollow horizontal bar, and two primary locking devices. Each of the support frame units includes an upper portion, a lower portion opposite to the upper portion, and an intermediate portion connecting the upper and lower portions. The upper portion is formed with a horizontal hollow tube at the top end thereof. The hollow horizontal bar is adapted to hang a swing chair, and has opposite end portions that are inserted respectively into the hollow tubes of the support frame units. The primary locking devices are disposed respectively on the end portions of the horizontal bar to lock the end portions of the horizontal bar relative to the hollow tubes.


REFERENCES:
patent: 5564987 (1996-10-01), Ayrolles
patent: 5803818 (1998-09-01), Tseng
patent: 5876289 (1999-03-01), Liu
patent: 6036605 (2000-03-01), Tseng
patent: 6402233 (2002-06-01), Tseng

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