U.S. patent application number 15/812100 was filed with the patent office on 2019-05-16 for chair structure.
The applicant listed for this patent is Huang Chang LIU. Invention is credited to Huang Chang LIU.
Application Number | 20190142168 15/812100 |
Document ID | / |
Family ID | 66431571 |
Filed Date | 2019-05-16 |
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United States Patent
Application |
20190142168 |
Kind Code |
A1 |
LIU; Huang Chang |
May 16, 2019 |
CHAIR STRUCTURE
Abstract
A chair structure contains: a seat, a back plate one-piece
formed with the seat, and an upright frame locked on a bottom of
the seat. The back plate includes a convex face formed on a front
end thereof, multiple slots separately defined in the back plate,
and multiple flexible sheets arranged on a rear end of the back
plate. The multiple flexible sheets have different thicknesses
individually, wherein a thickness of a central one of the multiple
flexible sheets adjacent to the back plate is less than another
flexible sheets proximate to the central flexible sheet, and the
other flexible sheets close to two sides of the back plate are
thicker than said another flexible sheets. Furthermore, the
multiple slots accommodate a plurality of reinforcement ribs
respectively.
Inventors: |
LIU; Huang Chang; (Changhua
County, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LIU; Huang Chang |
Changhua County |
|
TW |
|
|
Family ID: |
66431571 |
Appl. No.: |
15/812100 |
Filed: |
November 14, 2017 |
Current U.S.
Class: |
297/301.1 |
Current CPC
Class: |
A47C 7/46 20130101; A47C
7/445 20130101 |
International
Class: |
A47C 7/44 20060101
A47C007/44 |
Claims
1. A chair structure comprising: a seat and a back plate one-piece
formed with the seat; the back plate including a convex face formed
on a front end of the back plate, multiple slots separately defined
in the back plate, and multiple flexible sheets arranged on a rear
end of the back plate; wherein the multiple flexible sheets have
different thicknesses individually, wherein a thickness of a
central one of the multiple flexible sheets is less than another
flexible sheets proximate to the central flexible sheet, and other
flexible sheets close to two sides of the back plate are thicker
than said another flexible sheets, such that the multiple flexible
sheets are progressively thicker from the center flexible sheet
outward to vary a thickness of a part of the seat; wherein the
multiple slots accommodate a plurality of reinforcement ribs
respectively; and an upright frame locked on a bottom of the
seat.
2. The chair structure as claimed in claim 1, wherein multiple
support ribs are arranged on a connection of the seat and the rear
end of the back plate.
3. The chair structure as claimed in claim 1, wherein an air
orifice is defined on a connection portion of the back plate and
the seat.
4. The chair structure as claimed in claim 2, wherein an air
orifice is defined on a connection portion of the back plate and
the seat.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a chair structure which
covers user's back so as to adjust sitting position, to support
user's waist, and to decrease user's waist and back pressure.
BACKGROUND OF THE INVENTION
[0002] A conventional chair is made of plastic material and
contains a seat and a back plate one-piece formed with the seat.
Alternatively, the conventional chair contains a seat and a back
plate movably connected with the seat.
[0003] However, the chair has following defects:
[0004] 1. When the seat is movably connected with the back plate,
an upright frame made of metal material is connected with a bottom
of the seat, thus having complicated manufacture process and high
production cost.
[0005] 2. When the seat is one-piece formed with the back plate,
the back plate is hard so as to support user's back, thus having
using discomfort.
[0006] 3. The back plate has an inflexible face which does not
deform, so it cannot support user's wrist sufficiently.
[0007] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0008] The primary aspect of the present invention is to provide a
chair structure which the multiple flexible sheets do deform when
user back contacts with the back plate so as to cover and support
greatly so as to matingly cover the user's back, thus adjusting
sitting position, supporting user's waist, and decreasing user's
waist and back pressure.
[0009] To obtain above-mentioned aspect, a chair structure provided
by the present invention contains: a seat, a back plate one-piece
formed with the seat, and an upright frame locked on a bottom of
the seat.
[0010] The back plate includes a convex face formed on a front end
thereof, multiple slots separately defined in the back plate, and
multiple flexible sheets arranged on a rear end of the back plate.
The multiple flexible sheets have different thicknesses
individually, wherein a thickness of a central one of the multiple
flexible sheets adjacent to the back plate is less than another
flexible sheets proximate to the central flexible sheet, and the
other flexible sheets close to two sides of the back plate are
thicker than said another flexible sheets.
[0011] Furthermore, the multiple slots accommodate a plurality of
reinforcement ribs respectively.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a perspective view showing the assembly of a chair
structure according to a preferred embodiment of the present
invention.
[0013] FIG. 2 is another perspective view showing the assembly of
the chair structure according to the preferred embodiment of the
present invention.
[0014] FIG. 3 is a perspective view showing the assembly of a part
of the chair structure according to the preferred embodiment of the
present invention.
[0015] FIG. 4 is a cross sectional view showing the assembly of a
part of the chair structure according to the preferred embodiment
of the present invention.
[0016] FIG. 5 is another cross sectional view showing the assembly
of a part of the chair structure according to the preferred
embodiment of the present invention.
[0017] FIG. 6 is a side plan view showing the application of the
chair structure according to the preferred embodiment of the
present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] With reference to FIGS. 1-3, a chair structure according to
a preferred embodiment of the present invention comprises: a seat
21 and a back plate 22 one-piece formed with the seat 21. The back
plate 22 includes a convex face 220 formed on a front end thereof,
multiple slots 23 separately defined in the back plate, multiple
flexible sheets 24 arranged on a rear end of the back plate 22,
wherein the multiple slots 23 accommodate a plurality of
reinforcement ribs 230 respectively, and an air orifice 25 is
defined on a connection portion of the back plate 22 and the seat
21 so as to enhance air permeability, wherein multiple support ribs
26 are arranged on a connection of the seat 21 and the rear end of
the back plate 22 so as to enhance support of the back plate
22.
[0019] With reference to FIG. 4, the multiple flexible sheets 24
have different thicknesses individually, wherein a thickness of a
central one of the multiple flexible sheets 24 adjacent to the back
plate 22 is less than another flexible sheets 24 proximate to the
central flexible sheet 24, and the other flexible sheets 24 close
to two sides of the back plate 22 are thicker than said another
flexible sheets 24, hence the back plate 22 deforms flexibly.
[0020] In addition, an upright frame 10 is locked on a bottom of
the seat 21.
[0021] Accordingly, the chair structure of the present invention
has advantages as follows:
[0022] 1. The plurality of reinforcement ribs 230 are accommodated
in the multiple slots 23 respectively so as to enhance
reinforcement of the multiple flexible sheets 24.
[0023] 2. The convex face 220 of the back plate 22 matingly
contacts with user's back, so addition supporting cushion or pillow
is not required.
[0024] 3. As shown in FIG. 5, the multiple flexible sheets 24 have
different thickness individually, wherein a thickness of a central
one of the multiple flexible sheets 24 adjacent to the back plate
22 is less than another flexible sheets 24 proximate to the central
flexible sheet 24, and the other flexible sheets 24 close to two
sides of the back plate 22 are thicker than said another flexible
sheets 24, hence the back plate 22 deforms flexibly. When the
user's back contacts with the back plate 22, the multiple flexible
sheets 24 deform greatly so as to matingly cover the user's back,
thus enhancing support and using comfort.
[0025] 4. Referring to FIG. 6, when the user's back contacts with
the back plate 22, the back plate 22 moves backward slightly so
that the user contacts with the back plate 22 comfortably.
Preferably, the multiple support ribs 26 reinforce the back plate
22 so as to support the back plate 22 forcefully.
[0026] 5. The seat 21 is one-piece formed with the back plate 22,
and the multiple slots 23 cover the user's back so as to simplify
manufacture process and to reduce fabrication cost greatly.
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