U.S. patent application number 14/983555 was filed with the patent office on 2018-05-24 for portable folding chair.
The applicant listed for this patent is Feng Lv. Invention is credited to Feng Lv.
Application Number | 20180140098 14/983555 |
Document ID | / |
Family ID | 55835288 |
Filed Date | 2018-05-24 |
United States Patent
Application |
20180140098 |
Kind Code |
A1 |
Lv; Feng |
May 24, 2018 |
Portable Folding Chair
Abstract
The present invention relates to a folding chair. The folding
chair comprises a group of foot pipes, a group of seat frame pipes,
a group of rotating connection pipes, a group of locking pipes and
fabric. The group of foot pipes comprises a left and a right foot
pipes. Armrest fixing pieces are fixedly installed on the upper
ends of the foot pipes. A limiting piece is fixed in the middle of
the foot pipes. A sliding piece is sleeved below the limiting
piece. The upper ends of the four rotating pipes are rotatably
connected with the seat frame pipes through a seat frame rotating
piece; the other end of the four rotating pipes is rotatably
connected with another linkage pipe of the four rotating pipes
through a rotating piece fixed thereto; the rotating pipes are
symmetrically arranged.
Inventors: |
Lv; Feng; (Suzhou,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Lv; Feng |
Suzhou |
|
CN |
|
|
Family ID: |
55835288 |
Appl. No.: |
14/983555 |
Filed: |
December 30, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47C 4/283 20130101;
A47C 4/42 20130101 |
International
Class: |
A47C 4/28 20060101
A47C004/28; A47C 4/42 20060101 A47C004/42 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 3, 2015 |
CN |
201520986834.4 |
Claims
1. A portable folding chair, comprising: a group of foot pipes; a
group of seat frame pipes; a group of rotating connection pipes; a
group of locking pipes; and a fabric; the group of foot pipes
comprises a left and a right foot pipes; armrest fixing pieces are
fixedly installed on upper ends of the foot pipes; a limiting piece
is fixed in a middle of the foot pipes; a sliding piece is sleeved
below the limiting piece; upper ends of the four rotating
connection pipes are rotatably connected with the seat frame pipes
through a seat frame rotating piece; other ends of the four
rotating pipes are rotatably connected with a linkage pipe of the
four rotating pipes through a rotating piece fixed thereto; the
four rotating connection pipes are symmetrically arranged; a left
and a right locking pipes are installed and are symmetrically
arranged; middles of the locking pipes are rotatably connected with
middles of the rotating connection pipes; a locking piece is
arranged at the inner end and is rotatably connected with the
locking pipe on the other side; the outer end is rotatably
connected with the sliding piece sleeved on the foot pipes; a left
and a right seat frame pipes are arranged, respectively sleeved on
the armrest fixing pieces and rotatably connected with the rotating
connection pipes; and the fabric is sleeved on the seat frame
pipes.
2. The portable folding chair according to claim 1, wherein armrest
pipes are arranged on the armrest fixing pieces and rotate; back
rotating pieces are fixedly installed on a back pipe and are
rotatably connected with the armrest pipes.
3. The portable folding chair according to claim 1, wherein after a
bracket is unfolded to a position, the locking pipes are
symmetrically arranged form an angle from a revised v shape to a v
shape; and the locking pieces are fixedly sleeved on the locking
pipes are stressed in opposite vertex and naturally locked.
4. The portable folding chair according to claim 2, wherein the
locking pipes is configured to support an unfolded bracket and lock
a locked structure in a gravity direction simultaneously.
5. The portable folding chair according to claim 1, wherein after
being folded, the bracket is compact and can be carried away by one
hand like a briefcase.
Description
TECHNICAL FIELD
[0001] The invention relates to a folding chair, in particular to a
folding chair having the same size as a briefcase, convenient in
carrying.
BACKGROUND
[0002] Most of the folding chairs currently used in people's
outdoor tourism and leisure are connected by pipe racks and fabric.
These structures have two disadvantages: 1. after being folded, the
structures have too large volume; their sizes are too high when the
structures are carried by one hand or placed in a trailer or a car
boot, affecting the travel; 2. the bracket is not locked after
being folded or a locking structure shall be individually installed
on the bracket, which is not convenient for operation.
SUMMARY
[0003] The purpose of the invention is to provide a folding
mechanism chair which is convenient in folding and can be locked by
natural gravity.
[0004] To achieve the purpose of the invention, the following
technical solution is adopted: A folding chair comprises a group of
foot pipes, a group of seat frame pipes, a group of rotating
connection pipes and a group of locking pipes; the group of foot
pipes comprises a left and a right foot pipes; armrest fixing
pieces are fixedly installed on the upper ends of the foot pipes; a
limiting piece is fixed in the middle; a sliding piece is sleeved
below; four rotating connection pipes are arranged; the upper ends
are rotatably connected with the seat frame pipes through a seat
frame rotating piece; the other end is connected with another
rotating connection pipe through a rotating piece fixed thereto;
the rotating connection pipes are symmetrically arranged; a left
and a right locking pipes are installed and are symmetrically
arranged; the middles of the locking pipes are rotatably connected
with the middles of the rotating connection pipes; a locking piece
is arranged at the inner end and is rotatably connected with the
locking pipe on the other side; the outer end is rotatably
connected with the sliding piece sleeved on the foot pipes; a left
and a right seat frame pipes are arranged, respectively sleeved on
the armrest fixing pieces and rotatably connected with the rotating
connection pipes; and the fabric is sleeved on the seat frame
pipes.
[0005] The armrest pipes are arranged on the armrest fixing pieces
of the above briefcase type portable folding chair and can rotate;
back rotating pieces are fixedly installed on a back pipe and are
rotatably connected with the armrest pipes to form an armrest and
back structure of the folding chair.
[0006] After a bracket of the above briefcase type portable folding
chair is unfolded to a position, the locking pipes symmetrically
arranged form an angle from shape to shape; and the locking pieces
fixedly sleeved on the locking pipes are stressed in opposite
vertex and naturally locked.
[0007] The locking pipes of the above briefcase type portable
folding chair simultaneously have two roles, i.e., supporting an
unfolded bracket and simultaneously naturally locking a locked
structure in a gravity direction, becoming one of innovation points
of the structure.
[0008] After the above briefcase type portable folding chair is
folded, the bracket is compact and can be carried away by one hand
like a hand-held briefcase.
[0009] The structure of the invention has the following
characteristics: (1) The locking pipes of the invention play a role
of safely locking the bracket structure while supporting the
bracket in a sliding way; integrating two functions into a whole is
the characteristic of the invention; (2) in the invention, a
locking structure is arranged on the bracket so that the fabric is
opened by the bracket and is kept tight; the bracket has better
comfort; (3) in the invention, by manually pulling the locking
pipes, the bracket can be unfolded or folded, which is convenient
in operation; (4) after the bracket of the invention is folded, the
volume is small, and the bracket, like a hand-held briefcase, is
convenient in carrying; and (5) the armrest pipes and the back pipe
can be arranged on the structure of the invention, but fewer space
is occupied when the structure is folded, achieving reasonable
design and high practicality.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] To clearly understand the contents in the invention more
easily, the invention will be further described in detail below in
combination with the drawings according to specific embodiments,
wherein
[0011] FIG. 1 is a contrast product diagram of the invention;
[0012] FIG. 2 is a structural diagram of product assembly of the
invention;
[0013] FIG. 3 is a product structural diagram of the invention;
[0014] FIG. 4 is a local diagram of the invention;
[0015] FIG. 5 is a schematic diagram of locking and folding of the
invention;
[0016] FIG. 6 is a schematic diagram for folding a back pipe of the
invention;
[0017] FIG. 7 is a schematic diagram for folding armrests of the
invention;
[0018] FIG. 8 is a schematic diagram of a hand-held briefcase
type;
[0019] FIG. 9 is a structural diagram for supporting locking pipes
in a sliding way;
[0020] FIG. 10 is a structural diagram that locking pipes form
180.degree. symmetrically; and
[0021] FIG. 11 is a structural diagram of natural locking in V
shape of locking pipes.
DETAILED DESCRIPTION OF THE DRAWINGS
[0022] In FIG. 1: As a contrast diagram of the invention, a back
pipe 1-1, armrest pipes 1-2 and foot pipes 1-3 are integrated into
a whole; the bracket cannot be folded; a crossed pipe 2 is
rotatably connected with a quadrangle between the armrest pipes
1-2; the bracket cannot be folded due to the size and the packaging
of the structure is too large.
[0023] In FIG. 2 to FIG. 8, the invention comprises a group of foot
pipes 13, a group of seat frame pipes 4, a group of rotating
connection pipes 10, a group of locking pipes 9 and fabric 14; the
group of foot pipes 13 comprises a left and a right foot pipes;
armrest fixing pieces 6 are fixedly installed on the upper ends of
the foot pipes 13; a limiting piece 7 is fixed in the middle; a
sliding piece 8 is sleeved below; four rotating pipes 10 are
arranged; the upper ends are rotatably connected with the seat
frame pipes 4 through a seat frame rotating piece 5; the other end
is rotatably connected with another linkage pipe through a rotating
piece 11 fixed thereto; the rotating connection pipes are
symmetrically arranged; a left and a right locking pipes 9 are
installed and are symmetrically arranged; the middles of the
locking pipes 9 are rotatably connected with the middles of the
rotating connection pipes 10; a locking piece 12 is arranged at the
inner end and is rotatably connected with the locking pipe 9 on the
other side; the outer end is rotatably connected with the sliding
piece 8 sleeved on the foot pipes 13; a left and a right seat frame
pipes 4 are arranged, respectively sleeved on the armrest fixing
pieces 6 and rotatably connected with the rotating connection pipes
10; the armrest pipes 3 are rotatably connected to the armrest
fixing pieces 6; back rotating pieces 2 are fixedly installed on a
back pipe 1 and are rotatably connected with the armrest pipes 3;
and the fabric is sleeved on the seat frame pipes 4.
[0024] In FIG. 9 to FIG. 11:
[0025] In the implementation of a locking structure of the
invention, locking pipes 9 symmetrically arranged initially form an
angle which is less than 180.degree.. When the locking pipes 9
drive the sliding piece 8 sleeved on the foot pipes 13 to upwards
slide together until the locking pipes 8 symmetrically arranged
form 180.degree., the locking pipes 9 slide upwards; the locking
pipes symmetrically arranged form a V shape; at this moment, the
bracket is in a locked state; and when a person sits on a seat
surface to apply gravity, because the locking pipes symmetrically
arranged form a V shape, the sliding piece 8 drives the outer ends
of the locking pipes 9 to slide upwards. When the bracket is
folded, the outer ends of the locking pipes 9 are pressed downwards
by hands. Using a lever principle, an inclined angle between the
locking pipes 9 symmetrically arranged forms shape and the sliding
piece 8 slides downwards.
* * * * *