U.S. patent application number 09/899427 was filed with the patent office on 2002-04-18 for ergonomic chair-armchair structure, particularly for office, of the type equipped with adjustable kidneyrest and headrest.
This patent application is currently assigned to SITTING snc de Bordin Giacinto e Mauro. Invention is credited to Giacinto, Bordin.
Application Number | 20020043841 09/899427 |
Document ID | / |
Family ID | 11459873 |
Filed Date | 2002-04-18 |
United States Patent
Application |
20020043841 |
Kind Code |
A1 |
Giacinto, Bordin |
April 18, 2002 |
Ergonomic chair-armchair structure, particularly for office, of the
type equipped with adjustable kidneyrest and headrest
Abstract
Ergonomic chair-armchair structure, particularly for office, of
the type with an adjustable kidneyrest and headrest, including a
base with related support vertical column of a seat and a back, the
latter of the type obtained by a tensioned sheet between the two
sides of the chair-armchair, in which a support element of the
headrest and of the kidneyrest, extended according to the profile
of the back is closed to the back side of the latter, being, on one
side, downwardly fixed to the seat, and on the other to a
connecting cross element between the sides of the armchair; and
furthermore in which said kidneyrest and headrest are adjustable
along the said support element, providing selective locking
means.
Inventors: |
Giacinto, Bordin; (Longare,
IT) |
Correspondence
Address: |
HARRISON & EGBERT
1018 Preston St., Suite 100
Houston
TX
77002
US
|
Assignee: |
SITTING snc de Bordin Giacinto e
Mauro
|
Family ID: |
11459873 |
Appl. No.: |
09/899427 |
Filed: |
July 5, 2001 |
Current U.S.
Class: |
297/284.4 ;
297/284.7 |
Current CPC
Class: |
A47C 7/38 20130101; A47C
7/462 20130101; A47C 7/46 20130101 |
Class at
Publication: |
297/284.4 ;
297/284.7 |
International
Class: |
A47C 007/46 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 21, 2000 |
IT |
TV2000A000084 |
Claims
I claim:
1. Ergonomic chair-armchair structure, particularly for office,
characterized in that it provides a support element (6) of at least
one kidneyrest (8), under lee of the back side of the back (4),
being, on one side, fixed to the seat (3-411), from the other to a
connecting cross element (7) between the sides (41) of the armchair
(A).
2. Ergonomic chair-armchair structure, particularly for office,
according to claim 1., characterised in that said kidneyrest (8) is
adjustable along the said support element (6), providing selective
locking means (9, 91).
3. Ergonomic chair-armchair structure, particularly for office,
including a base (1), a support (12) of a seat (3) and a back (4),
the latter of the type obtained with a sheet (5) tensioned between
the two sides (41) of the chair-armchair, according to claims 1.,
and 2., characterized in that it provides a support element (6) of
the kidneyrest (8) and of the headrest (10), under lee of the back
side of the back (4), being, on one side, downwardly fixed to the
seat (3411), from the other to a connecting cross element (7)
between the sides (41) of the armchair; and furthermore in which
said kidneyrest (8) and headrest (10) are adjustable along the said
support element (6), providing selective locking means (9, 91).
4. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that the support rod
(6), is made up with a metallic plate, shaped according to the
profile of the same back (4), of which the lower end (61) bent for
insert below the seat (3) and be anchored to the same, while the
opposed side (62), upwards directed that exceeds with the section
(621) the height of the back (4), is set and so engaged, in
intermediate position, to a cross-piece (7), that joins the sides
(41) of the chair (A).
5. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that the support rod
(6), in the underside, included between the cross-piece (7) and the
seat (3) provides an adjustable kidneyrest (8).
6. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that the upper part
(62) of the rod (6), for the section (621) that exceeds the height
of the back (4), provides an adjustable overhanging headrest (10);
said rod (6) disposing the section (621) close to the axis of the
back (4).
7. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that both the
kidneyrest (8), that the headrest (10) are made up of an element of
support (81, 101), padded (82, 102) facing the back of the sheet
(5), from the other, providing a seat (83, 103) through which is
passing-through the support rod (6).
8. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that the selective
locking means of the position of the kidneyrest (8) and of the
headrest (10), along the rod (6), are made up by a screw (9), that
by means of a knurl (91), perpendicularly regards the seat (83,
103), insisting on the rod (6) in connection with references
(611).
9. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that the position of
the stuffing (82, 102) respectively of the kidneyrest (8) and of
the headrest (10), is almost close-fitting to the sheet (5),
without to deform the profile of the same, or at the most lightly
deviated.
10. Ergonomic chair-armchair structure, particularly for office,
according to previous claims, characterised in that along the said
support element (6), is provided, in fixed position, an overhanging
clothes-hanger (63), made up of a lightly arched portion, connected
to the rod (6) by a back easement (631).
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] This invention refers to an ergonomic chair-armchair
structure, particularly for office, of the type equipped with
adjustable kidneyrest and headrest.
[0003] The innovation finds particular even if not exclusive
application in the field of office-furniture implements.
[0004] 2. Description of Related Art
[0005] It is well known that the chairs are made up generally of a
structure or better of a frame, obtained in different material,
able to support the seat and the back.
[0006] Said frame, includes seat legs, sometimes with less than
four legs, eventually providing transverse support means and
connecting means between the front and back couples of legs, as
well as of supports applied on the back, which have the purpose to
support almost perpendicularly the back.
[0007] In other versions, as for example for armchairs, arm rests
which are anchored sideways to the frame that holds up the plan
seat can be provided, sometimes, with an end also to the back.
[0008] Well known, are also the devices able to optimise the
sitting in ergonomic way, that characterize said chairs-armchairs
and chairs, devices that, because of the need to confer greater
comfort to the user, are present on the market in large number and
in different variations.
[0009] They, substantially, are intended to allow the sole
adjusting of the height and of the inclination of the seat or of
the back, or, favour certain movements of the seat, of the back or
of both, as the oscillations of movements of the last ones, that
moreover can be more or less synchronous.
[0010] Other prerogatives just of office armchairs/chairs are not
known, finalized to favour a correct sitting.
[0011] Headrest are known. These, substantially, can be of two
kinds. A first is fixed, and usually, for example in an armchair is
obtained monolithically directly from the body that bears the
padded back, prolonging of the necessary amount for the same, in
correspondence of the top bearing and forming it as a frame.
[0012] Of it, there is a wide diffusion in the field of
motor-vehicles, but also in the sector of the furniture, as
evidenced before, with almost minimum structural or shape
variations.
[0013] A second type is adjustable, in height, and recently also in
the inclination.
[0014] This use, is known with greater recurrence in the field of
motor vehicles, where the movement of headrest can be
power-operated and manual.
[0015] In these cases, however, one observes that the rods, which
sustain the padded support and are integral with this, are
introduced through the stuffing and along the back structure, in
such a way to be movable axially respect to the same.
[0016] Known, particularly in the sector of the motor vehicle, is
also a second adjusting system, this regards the so-called lumbar
adjusting device.
[0017] This one, in good substance, allows to intervene almost
manually, modifying the profile of the back of a seat, just little
over the lower rachis, that allows, substantially, to go to fill
out that area that usually and otherwise, would be hardly
adaptable, because of the different anatomical conformations of
single users.
[0018] And indeed, usually, the position of the rachis is, for
example in the female sex subjects much more advanced as regards
gluteus, that determines some lumbar cavities decidedly more
accentuated that in the masculine subjects.
[0019] Such devices, have therefore the function to obviate this
inconvenience, modifying the profile of the stuffing of the back in
such a way to accumulate or deform part of the stuffing in that
lumbar defined area of pre-eminent interest for the user.
[0020] Such function, in conclusion, can relieve those common pains
from defined position as back-pain.
[0021] For example, between the contrivances usually utilized,
finalized to modify the profile of the back, the interposition
between the stuffing and the bearing structure of the back is
known, said interposition is a net or laminar, structure with a
low-curved arc.
[0022] Connecting the two arched ends, by means of the use of a
contrivance able to approach them or vice-versa between them, a
variation of the thickness is obtained, in the point in which the
said structure is introduced, imposing the desired variation of the
profile.
[0023] A first contrivance finalized to close the ends of said
structure, consisted in providing cables, stretched between guide
supports, sometimes introduced in convenient sheaths, whose tension
is modified connecting a support, which by means of the action of a
worm realizes a given stroke along an axis.
[0024] The reduced energetic efficiency of the worm, had to assure
the stability of the conferred shape, on the basis that this is not
subjected to external forces.
[0025] Adjusting lumbar devices are not known, even if complex,
mutual from other sections or however applied in the office
chairs/armchairs, nor for other directions close devices to these
always with respect to office chairs are known.
[0026] However, traditionally, some typist chairs, used to provide
a support stanchion of a back, with the curved lower end, which on
one side, was engaged in a convenient seat, obtained below the
seat, to be interested by locking perpendicular means and vice
versa, that allowed the adjusting in depth.
[0027] On the other hand, the said stanchion, supported the back,
in an adjustable condition, being made movable in respect of said
fixed stanchion.
[0028] About stanchion, it has been made reference to a plate,
shaped, which was introduced coaxially to a seat with a ring
integral with the support of the back.
[0029] Through this seat was made operative a screw, where acting
manually, the unlock of the position was caused.
[0030] Said screw, could interest the thickness of the stanchion,
being extractable, contrasted by elastically yielding means, or in
other cases, could simply persist with the point in convenient
obtained counterbores along a side of said stanchion which defined
the single attainable positions.
[0031] In this case, one tells that some prior users, used to use
the back as kidney-rest because of the particular function to which
were called to do, namely the typists.
[0032] This was made possible, shifting intentionally the back, by
one high position with a very low, almost in proximity of the seat,
position that, that however was hardly attainable because of the
shape downwardly curved of the stanchion, necessary to confer a
certain strength and in the same time elasticity to the
structure.
[0033] In this case however, it is evident that, on the other hand
the chair could not have possibility to offer any valid support for
the back, which if went back result without of any support, overall
with the risks of relative accidents.
[0034] It is necessary to premise that the solutions of
chairs/armchairs and chairs, today adopted, for the office
furniture, provide in large extent, the use of self-supporting
sheets, particularly in correspondence of the back.
[0035] These, in short, allow to reduce the production costs of the
chair, because they avoid the recourse to expensive support
structures, as for example the body in plastic material, without to
renounce the comfort.
[0036] At the same time, also the predisposition of the stuffing is
avoided, which further allows the cost reduction.
[0037] However, the use of said self-supporting sheets, involves
problems, which essentially refer to the necessary and correct
tension of the sheet, between the two elements or sides of the
back, along which the said sheet is fixed.
[0038] An excessive tension, involves a stiffening of the plane of
support as obtained, vanishing the function of the greater comfort
that one should obtain adapting the sheet to the profile of the
body.
[0039] On contrary, an insufficient tension, surely causes an
excessive deformation of the same.
[0040] In practice, the profile of the back would trend to belly in
unproportionate way towards the back part of the same, ending up
having to sack the body of the person.
[0041] The search of an optimal tension is therefore very difficult
operation, it is not always attainable, also because of the natural
and not predictable yielding and however degradation for wearing of
the material.
[0042] Furthermore, the yielding of the sheet cannot be provided
uniform along the whole surface, but should be differentiated in
function of the different areas of the body provided each one of a
proper profile more or less accentuated.
[0043] Therefore, it results that the tendency of makers to
individuate a mean tension, in the back, but uniform, is certainly
useful with some areas, other on contrary penalizes it.
[0044] All of these, it is just the lumbar area, that, in this
case, when stressed towards the exterior from the surface of the
body, results too yielding or vice versa, originating a sitting not
completely correct.
BRIEF SUMMARY OF THE INVENTION
[0045] The aim of this invention is also to avoid the
above-mentioned drawbacks.
[0046] This and other aims are reached with this innovation
according to the characteristics as in the included claims solving
the arising problems by means of an ergonomic chair-armchair
structure, particularly for office, of the type with adjustable
kidneyrest and headrest, including a base with related support
vertical column of a seat and a back, the latter of the type
obtained by a tensioned sheet between the two sides of the
chair-armchair, in which, a support element of the headrest and of
the kidneyrest, developed according to the profile of the back is
under lee of the back side of the latter, being, on one side,
downwardly fixed to the seat, from the other to a connecting cross
element between the sides of the armchair; and furthermore in which
said kidneyrest and headrest are adjustable along the said support
element, providing selective locking means.
[0047] In this way, across the considerable creative contribution
which effect constitutes an immediate technical progress different
advantages are achieved, with particular reference to the
chairsarmchairs, provided with a support sheet with back
function.
[0048] Firstly, one selected seat ergonomy is obtained,
particularly comfortable, in order to simultaneously have as much
of a headrest as the adjustable kidneyrest, adapting the position
to the different anatomical conformations of single users.
[0049] Secondarily, it is made possible to check locally the
deformation of the profile of the back, in sitting, particularly in
lumbar position, giving an effective support for the part of the
interested body, furthermore extremely easy.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0050] These and other advantages will appear from the following
specific description of a preferred solution with the aid of
schematic drawings included whose details of execution are not to
be considered limitative but preferably illustrative.
[0051] FIG. 1., represents a back view of a chair-armchair,
provided with an adjustable support structure of the headrest and
of the kidneyrest.
[0052] FIG. 2., represents a side view of the chair-armchair of
FIG. 1.
[0053] FIG. 3., represents a side view of the adjusting device
applied to the headrest and to the kidneyrest, of the chair as in
FIGS. 1. and 2.
[0054] Finally, FIG. 4., represents a plan view of the same
adjusting device of FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
[0055] With respect also to the figures, one detects that a
chairarmchair (A) particularly for the office furniture, is made up
of a turning base (1), of the type with five spokes (11), from
which one raises a column (12), finalized to the support of a
mechanical device (2) for the synchronous oscillation of the seat
(3) and of the back (4), commanded by related levers.
[0056] In this case, the chair structure, provides two specular "L"
shaped tubular elements (41 respectively constituting the right
side and left side.
[0057] The bottom (411) of these, interacts with the seat (3),
while, the side upwards directed (412), to curvilinear shape,
constitutes the side profile of anchorage of a sheet (5), perfectly
tensioned between said two specular sides (41).
[0058] Under lee of the back (4), therefore lightly deviated from
this, an accessory is present, made up of a support rod (6) of a
kidneyrest (8) and of a headrest (10).
[0059] Said support rod (6), essentially made up with a metallic
plate, shaped according to the profile of the same back (4),
provides the lower end (61) bent to insinuate oneself below the
seat (3) and be anchored to the same by means of traditional
screws.
[0060] The opposed side (62), upwards directed that exceeds with
the section (621) the height of the back (4), is set and so
engaged, in intermediate position, to a cross-piece (7), that joins
the sides (41 of the chair (A).
[0061] Function of said support rod (6), in the underside, included
between the cross-piece (7) and the seat (3) is to allow the driven
mobility of a kidneyrest (8), adjustable in height.
[0062] In more detail, said kidneyrest (8), is made up of an
element of support (81), padded (82) from one side facing the back
of the sheet (5) and from the other, providing a seat (83) through
which is passing-through the support rod (6).
[0063] In this way a screw (91) by means of a knurl (9),
perpendicularly interesting the seat (83), insists on the rod (6)
in correspondence of opportune equidistant references (611),
defining the different attainable positions from the kidneyrest
(8).
[0064] In more detail, the position of the stuffing (82) is such to
result almost close-fitting to the sheet (5) but without to deform
the profile of the same, or at the most lightly deviated, in such a
way to allow, during the sitting, a natural adapting, for light
yielding, localised, of the back (4) laying to the rear stuffing
(82).
[0065] Relatively to the upper part (62) of the rod (6), for the
section (621) that exceeds the height of the back (4), a headrest
is provided (10) overhanging, also this being adjustable.
[0066] In this case, the section (621) of the rod (6), is close to
the axis of the back (4), as regards the under part, in such a way
to allow a sliding of said headrest (10) almost in axis respect to
the back (4).
[0067] About structure of the latter, one detects that also this is
composed of an element of support (101), padded (102) by the chair
side, from the other providing a seat (103) through which is
passing-through the support rod (6). The adjusting of the same, is
attainable in the same way of what has been provided for the
kidneyrest (8).
[0068] Finally, in a preferred solution, along the said support
element, in fixed position, is provided an overhanging
clothes-hanger (63), made up of a lightly arched portion, said
portion being connected to the rod (6) by a rear easement (63).
* * * * *