U.S. patent application number 09/847362 was filed with the patent office on 2002-11-07 for chair having a reclining structure.
This patent application is currently assigned to Hsin Hao Health Materials Co.Ltd.. Invention is credited to Chen, Yuan-Chuen.
Application Number | 20020163236 09/847362 |
Document ID | / |
Family ID | 25300432 |
Filed Date | 2002-11-07 |
United States Patent
Application |
20020163236 |
Kind Code |
A1 |
Chen, Yuan-Chuen |
November 7, 2002 |
CHAIR HAVING A RECLINING STRUCTURE
Abstract
A reclining chair is formed of a base frame, a seat frame, and a
backrest frame. The base frame is provided with two horizontal
slide rails and two inclined slide rails. The seat frame is
provided with two first slide wheels slidable on the horizontal
slide rails, and two second slide wheels slidable on the inclined
slide rails. The backrest frame is fastened at one end with the
seat frame such that the backrest frame reclines along with the
seat frame.
Inventors: |
Chen, Yuan-Chuen; (Chang-Hua
Hsien, TW) |
Correspondence
Address: |
HARRISON & EGBERT
Suite 100
1018 Preston St.
Houston
TX
77002
US
|
Assignee: |
Hsin Hao Health Materials
Co.Ltd.
|
Family ID: |
25300432 |
Appl. No.: |
09/847362 |
Filed: |
May 3, 2001 |
Current U.S.
Class: |
297/330 |
Current CPC
Class: |
A47C 1/0246 20130101;
A47C 1/03211 20130101; A47C 1/0242 20130101; A47C 1/03222
20130101 |
Class at
Publication: |
297/330 |
International
Class: |
A47C 001/024 |
Claims
I claim:
1. A reclining chair comprising: a base frame provided with two
horizontal slide rails and two inclined slide rails located under
said two horizontal slide rails; a seat frame formed of two support
rods and two support plates extending from said support rods, said
support rods being provided at one end with a first slide wheel
pivoted thereto, said support plates being provided at one end with
a second slide wheel pivoted thereto, said first slide wheel being
slidable on said horizontal slide rail, said second slide wheel
being slidable on said inclined slide rail; and a backrest frame
fastened with one end of said seat frame such that said backrest
frame and said seat frame form therebetween a predetermined angle,
and that said backrest frame and said seat frame recline
synchronously.
2. The reclining chair as defined in claim 1, wherein said base
frame is provided with a drive device mounted thereon; wherein said
seat frame and said base frame are linked by an expandable member
whereby said expandable member is actuated by said drive
device.
3. The reclining chair as defined in claim 1, wherein said backrest
frame is provided with two lugs and is fastened with said seat
frame such that said two lugs of said backrest frame are fastened
with said seat frame in conjunction with two fastening blots.
4. The reclining chair as defined in claim 3, wherein said backrest
frame and said seat frame are connected with each other by a
connection body.
5. The reclining chair as defined in claim 2, wherein said drive
device is formed of a motor and a transmission member driven by
said motor; wherein said expandable member is formed of a threaded
rod and a threaded tube fitted over said threaded rod whereby said
threaded rod is actuated to engage in an expandable action in said
threaded tube at such time when said transmission member is driven
by said motor.
6. The reclining chair as defined in claim 2, wherein said seat
frame and said backrest frame are linked by a single pivoting
point.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to a chair, and more
particularly to a chair which has a reclining structure.
[0003] 2. Description of Related Art
[0004] As shown in FIG. 1, a reclining chair of the prior art
comprises a backrest 10 and a seat 11. The backrest 10 can be
reclined, as illustrated in FIG. 1. The prior art reclining chair
is limited in function in that the backrest 10 is independently
reclined, without a coordination of the seat 11. In other words as
the backrest 10 is reclined, the seat 11 remains stationary. It is
uncomfortable to sit on the prior art reclining seat in the
reclining state, due to the fact that the vertebral column and the
thighbone of a person seated on the chair form an angle greater
than 90 degrees, as illustrated in FIG. 1. In addition, the
reclined backrest 10 of the prior art reclining chair takes up two
much of the room space and is apt to hit the room wall.
BRIEF SUMMARY OF THE INVENTION
[0005] The primary objective of the present invention is to provide
a reclining chair which is free of the shortcomings of the prior
art reclining chair described above.
[0006] In keeping with the principle of the present invention, the
foregoing objective of the present invention is attained by a
reclining chair which comprises a seat frame, a backrest frame, and
a driving device enabling the seat frame and the backrest frame to
recline synchronously.
[0007] The features, functions, and advantages of the present
invention will be more readily understood upon a thoughtful
deliberation of the following detailed description of the preferred
embodiments of the present invention with reference to the
accompanying drawings.
BRIEF DESCIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0008] FIG. 1 shows a schematic view of a prior art reclining chair
at work.
[0009] FIG. 2 shows a side schematic view of a first preferred
embodiment of the present invention.
[0010] FIG. 3 shows a schematic view of the first preferred
embodiment of the present invention at work.
[0011] FIG. 4 shows a schematic view of a second preferred
embodiment of the present invention in combination.
[0012] FIG. 5 shows an exploded view of the second preferred
embodiment of the present invention.
[0013] FIG. 6 shows a partial sectional view of the second
preferred embodiment of the present invention.
[0014] FIG. 7 shows a side schematic view of the second preferred
embodiment of the present invention in combination.
[0015] FIG. 8 shows a schematic view of the second preferred
embodiment of the present invention at work.
[0016] FIG. 9 shows another schematic view of the second preferred
embodiment of the present invention at work.
DETAILED DESCRIPTION OF THE INVENTION
[0017] As shown in FIGS. 1-3, a reclining chair embodied in the
present invention comprises a base frame 20, a seat frame 30, and a
backrest frame 40.
[0018] The base frame 20 is provided in two opposite sides of the
top thereof with a horizontal slide rail 21 and is further provided
under the horizontal slide rail 21 thereof with an inclined slide
rail 210.
[0019] The seat frame 30 comprises two support rods 32 and two
support plates 33 extending from the support rods 32. The support
rods 32 are provided at the rear end with a slide wheel 31 pivoted
thereto. The support plates 33 are provided at the free end with a
slide wheel 310 pivoted therewith. The slide wheel 31 slides on the
horizontal slide rail 21, whereas the slide wheel 310 slides on the
inclined slide rail 210. As the seat frame 30 is displaced, the
slide wheels 31 and 310 slide respectively and synchronously on the
slide rails 21 and 210 of the base frame 20.
[0020] The backrest frame 40 is fastened with the rear end of the
seat frame 30 such that the backrest frame 40 and the seat frame 30
form therebetween a predetermined angle. As the seat frame 30 is
displaced forward, the backrest frame 40 reclines
synchronously.
[0021] As shown in FIGS. 4-8, a reclining chair of the second
preferred embodiment of the present invention comprises a base
frame 20, a seat frame 30, a backrest frame 40, a drive device 50,
and an expandable member 60. The drive device 50 is mounted on the
base frame 20 to actuate the expandable member 60 which is disposed
between the bottom of the rear end of the seat frame 30 and the
base frame 20. The backrest frame 40 is provided in two sides of
the bottom end with a lug 41, which is fastened with the seat frame
30 by a fastening blot 42. In addition, the backrest frame 40 and
the seat frame 30 are connected with each other by a connection
body 43.
[0022] The drive device 50 is formed of a motor 51 and a
transmission member 52 which is driven by the motor 51 to actuate a
threaded rod 61 of the expandable member 60 as well as a threaded
tube 62 which is disposed on the base frame 20 and is fitted over
the threaded rod 61. As the transmission member 52 is driven by the
motor 51, the threaded rod 61 is indirectly actuated to engage in
the expanding action in the threaded tube 62, thereby enabling the
seat frame 30 to engage in a reclining motion along with the slide
wheels 310 which slide on the inclined slide rails 210. At the same
time, the backrest frame 40 is linked to recline along with the
seat frame 30.
[0023] As shown in FIG. 9, the seat frame 30 and the backrest frame
40 of the reclining chair of the present invention are linked by a
single pivoting point 70.
[0024] In light of the seat frame 30 and the backrest frame 40
being engaged in the reclining motion synchronously, the spinal
column and the thighbone of a person seated on the seat frame 30
form therebetween an angle corresponding to the angle that was
formed between the spinal column and the thighbone of the person
before the reclination.
[0025] The present invention described above is to be regarded in
all respects as being merely illustrative and not restrictive.
Accordingly, the present invention may be embodied in other
specific forms without deviating from the spirit thereof. The
present invention is therefore to be limited only by the scopes of
the following claims.
* * * * *