U.S. patent application number 13/458344 was filed with the patent office on 2013-05-09 for multipurpose & compatible pillow/headrest.
The applicant listed for this patent is Hae-hyun Nam. Invention is credited to Hae-hyun Nam.
Application Number | 20130113262 13/458344 |
Document ID | / |
Family ID | 40857502 |
Filed Date | 2013-05-09 |
United States Patent
Application |
20130113262 |
Kind Code |
A1 |
Nam; Hae-hyun |
May 9, 2013 |
MULTIPURPOSE & COMPATIBLE PILLOW/HEADREST
Abstract
Provided is a headrest structure. The headrest structure
includes an ergonomically shaped hole in the shape of a back of a
human head formed in a soft-textured material of latex foam or
memory foam, and an auxiliary tray and frame that can be assembled
with the back of a chair to relieve a neck and a head from
discomfort.
Inventors: |
Nam; Hae-hyun; (Seoul,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Nam; Hae-hyun |
Seoul |
|
KR |
|
|
Family ID: |
40857502 |
Appl. No.: |
13/458344 |
Filed: |
April 27, 2012 |
Current U.S.
Class: |
297/397 ;
297/391; 297/406; 297/410 |
Current CPC
Class: |
A47G 2009/1018 20130101;
B60N 2/882 20180201; A47C 7/383 20130101; A47G 9/10 20130101; B60N
2/885 20180201; A47C 7/38 20130101; A47G 9/1081 20130101; B60N
2/803 20180201 |
Class at
Publication: |
297/397 ;
297/391; 297/410; 297/406 |
International
Class: |
A47C 7/38 20060101
A47C007/38 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 8, 2007 |
KR |
10-2007-0113889 |
Jul 21, 2008 |
KR |
10-2008-0070717 |
Sep 8, 2008 |
KR |
10-2008-0088332 |
Claims
1. A headrest structure comprising: a headrest (3) having a concave
curved surface including a neck support configured to support a
neck of a user and a head support configured to support a head of
the user; and a headrest tray (20) configured to surround an
external surface of the headrest to be coupled thereto.
2. The headrest structure according to claim 1, wherein the
headrest tray (20) is inserted into and installed on a top end of a
chair.
3. The headrest structure according to claim 2, wherein the
headrest includes the concave curved surface whose shape and size
are formed depending on a shape and size of a head of a sitter, and
the headrest is replaced to be inserted into a quadrilateral groove
formed on the back depending on the shape and size of the head of
the sitter.
4. The headrest structure according to claim 2, wherein the
headrest includes a concave curved surface whose height and
direction are adjustable.
5. A headrest structure comprising: a headrest (3) having a concave
curved surface including a neck support configured to support a
neck of a user and a head support configured to support a head of
the user; an auxiliary frame (9) combined with the headrest to be
coupled thereto;
6. The headrest structure according to claim 5, wherein an
insertion rod (8) formed on a bottom surface of the auxiliary
frame.
7. A headrest structure comprising: a headrest (3) having a concave
curved surface including a neck support configured to support a
neck of a user and a head support configured to support a head of
the user; and an angle adjustment pad (34) inserted into a bottom
surface of the headrest (3) to incline an angle of the headrest
(3), wherein the angle adjustment pad (34) has a slope having a
predetermined inclination.
Description
TECHNICAL FIELD
[0001] The present invention focuses on improvement of head-support
function of pillows and chairs; it is intended to enhance the
convenience for everyday use with application of ergonomic figure,
proper utilization of materials and advanced structure.
[0002] aa) Concept of Ergonomic Figure
[0003] Among human spinal column, the cervical vertebrae consists
of seven bones around neck area and joins skeleton to the spine. It
looks a curve having a "C" shape of c in a sectional view. It plays
an important role of sustaining head and regarded as one of the
most important and delicate part of human body because spinal cord
(assembled group of various neurons) penetrates through this
cervical vertebrae. The human cervical vertebrae has a `C` shaped
curve when standing straight, while it floats in the air when lying
down on the bed or leaning against the chair. When sleeping in the
chair, it is also wrenched and tilted to the left/right or
forward/backward due to the relaxation of neck-muscle as well as
round-shape of back of the head. It creates pain on the neck and
shoulder when we use pillows and headrest of chairs manufactured
without consideration of such phenomenon. It is the purpose of this
invention to use proper pillows and functional headrest of chairs
so as to seek comfort and to release pain and ache from neck and
shoulder during the sleep on bed and chairs.
[0004] Mostly, pain and ache on neck and shoulder created by wrong
posture of head cause interrupted sleep and tiredness during the
sleep on passenger seats of long distance transportations including
airplanes, ships, trains, buses and automobiles.
[0005] It is difficult to support the head straight while sleeping
because of the relaxed neck muscle. Unless the head is placed
properly, the neck becomes wrenched and easily bent. Therefore, the
best way to protect cervical vertebrae and to release pain is to
fix and place head in naturally comfortable way on pillows and
chairs. Unfortunately, existing products are still far from
solution to this problem.
[0006] The meaning of natural head-fix(place) is to insert head
deeply into `ergonomic shape hole.` The main concept of this
invention is to use the method of head-fix and head-support in
stable and comfortable manner on pillows and chairs by comprising
deep `ergonomic shape hole of head-insert` that copies the back
shape of head and neck.
[0007] bb) Concept of Combination Structure and its Applicable
Objects
[0008] The present invention is to add `ergonomic shape hole of
head-insert` to the pillow/headrest combined with applicable
objects (such as pillows, chairs and sofas). For its proper usage,
it should be remodeled by the concept of combining the
pillow/headrest with applicable objects. For its multipurpose and
compatibility, the joint-dimension between applicable objects and
the pillow/headrest is unified and standardized. Also, its
portability will be increased by minimizing the size and weight of
the pillow/headrest. Accordingly, this invention furnishes more
comfortable way of living by facilitating the multi-use of the
product.
[0009] The pillow/headrest can be utilized for variety of
environments; bedrooms, sofas, reclining chairs and office
head-back chairs and also for outdoor places such as camping zones
and picnic areas, including passenger seats of airplanes, ships,
trains, buses, automobiles.
[0010] cc) Technological Condition
[0011] The purpose of this invention is to maintain the best
comfort position of head and neck in any circumstances and
environments. The technological conditions are as follows:
[0012] 1) Most people would feel satisfied with comfort on head and
neck for the long time use of `pillow/headrest`(FIG. 1) with
external figure of `ergonomic hole of head-insert` which copies the
back shape of the head and neck.
[0013] 2) Materials of pillow/headrest (such as latex-form,
memory-form, sponge) should feel soft, light weight and cushioning
and particularly be able to embody and materialize the `ergonomic
hole of head-insert` (drawing code 1 and 2).
[0014] 3) The pillow/headrest should be combined with and separated
from the body of applicable objects easily and simply for the
effective usage. The external size should be standardized (expected
to be about 26-28 centimeters width) for properly compatible use
with all kinds of applicable objects in any time. It also provides
adjustment function of pillow/headrest position according to the
user's sitting head height.
[0015] 4) Although the production cost will increase compared to
that of existing products, this invention will substantially have a
higher level of economical efficiency.
BACKGROUND ART
[0016] Through this invention, we exerted our effort to achieve the
improvement on overlooked issues among existing products on the
field of pillow and chairs as follows:
[0017] aa) The pillow
[0018] It is not easy for human head and neck to be fixed straight
and comfortable on flat ground and hard surface of pillow because
the human head is round-shape. For one example, natural materials
of traditional pillows such as rise husks, buckwheat and millet
have demerit to obstruct the blood circulation of head and neck
after long time use, although they are comparatively easy to fix
the head on the pillow. Another example is modern pillows filled
with materials of normal sponge, padding and midair-yarn; while it
has soft texture, it is difficult to fix the head in a stable
manner and we tilt our head left/right or forward eventually
creates pain in neck and shoulder. Recently, latex-form and
memory-form have been used for pillows to provide solution to
problems of tilted head and wrenched-neck, it has been improved
much but not solved completely.
[0019] In order to provide solution to problems of wrenched-neck
and tilted head, proper selection of material for the pillow is
necessary but essential solution on the aspect of external figure
is more important. It is the goal of this invention to find
solution both on external figure and internal materials of the
pillow
[0020] bb) The Chair (For Headrest)
[0021] We commonly know the best comfortable chair is to have
`ergonomic function` on area where the head, back, waist, arm,
hips, leg are laid on. The head stands on straight by itself when
we are awake or working on the chair, but the head should be fixed
and supported straight by supplements after we recline backwards
because neck muscle is relaxed while rest and asleep on chairs.
[0022] The chairs can not be reclined backward enough and need
various aids function of keeping comfortable posture of head by
supplements because the interval space of equipped chairs in
long-distance transportations such as airplane, ship, train and bus
is narrow. Currently, existing chairs have only flat ground and a
part of jutted component near by both sides of head for simply
avoiding the head's movement, instead of providing ergonomic shape
insert hole on the head part of chair body where human head is
placed. Thus this kind chairs can not release pains and stress of
neck and shoulder mainly because it has not improved support
function for head and cervical vertebra without providing essential
solution to the wrenched neck. Nobody has provided solution this
long standing problem until today in practical manner although
other parts of chair have shown some progress. It is said to be the
" heat around bush" instead of method to provide solution to the
essential portion of the problem.
[0023] This present invention can provide solution to long standing
problem by adding the deep `ergonomic shape hole of head-insert`
and by remodeling the chair body for assembly of `pillow/headrest`,
which has not been tried for chairs yet (FIG. 2).
[0024] Somebody may worry if deep hole of `ergonomic shape of
head-insert` would give any inconvenience when sat on chairs. But
it is no concern at all because human head rarely lean against the
chair body when we work on the chair such as reading books,
meanwhile deep hole of `ergonomic shape of head-insert` can be used
effectively for inserting and fixing of head when we sleep or rest
on chairs.
[0025] cc) Main Subjects for Improvement
[0026] Although the concept of `ergonomic shape hole of
head-insert` is quite simple, it was rarely adopted in pillows and
chairs. However, it now became comparatively easier to implement
this into variety of products due to the advance in technology,
nobody has tried it until present. For effective use of
pillow/headrest, this invention has now focused on the external
ergonomic figure, proper utilization of materials and
remodeling-structure of applicable objects such as chairs and
sofas.
DISCLOSURE OF INVENTION
Technical Problem
[0027] aa) Practical Use and Manufacturing Process of `Ergonomic
Shape Hole of Head-Insert`
[0028] bb) Proper Selection of Internal Materials and Exterior
Shells for `Pillow/Headrest`
[0029] cc) Remodeling of Applicable Objects for Easy
Assembly/Separation and Unification of Pillow/Headrest's Size for
Compatibility
[0030] dd) Function for `Pillow/Headrest` Position Adjustment on
Chairs
Technical Solution
[0031] Necessary tasks and means to solution of `pillow/headrest`
depend on the following:
[0032] aa) Practical use and manufacturing process of `ergonomic
shape hole of head-insert`: Commercialization of ergonomic figure
and structure as main concept of this invention and effective
utilization of `drilling cutting system`(FIG. 13) and `forming
& expansion molding system` for manufacturing
[0033] Embodiment of figure for `ergonomic shape hole of
head-insert` is required in advance of commercialization and
manufacturing of `forming of head shape-hole`(called
`pillow/headrest` after this). Embodied figure looks after the
`shape of half-sphere`(drawing code 1) like the back of human head
and the `shape of half-cylinder` (drawing code 2) like the back of
human neck as FIG. 1 & FIG. 3. The application idea of combined
figure with `shape of half-sphere` and `shape of half-cylinder` for
pillows and chairs is a simple concept as `the egg of columbus` but
practically there has not been any instances to apply such ideas to
pillows and chairs so far.
[0034] In the past, the reason why `ergonomic shape hole of
head-insert` was not made on the pillow was the character of
natural materials itself (such as rise husks, buckwheat, millet,
etc) that was impossible to make fixed `shape of half-sphere and
half-cylinder`. Although the internal materials have newly
substituted to latex-form, memory-form and sponge, the process of
`extrusion press molding system` prevented the pillows from its
production with shape of half-sphere and half-cylinder. Currently
there has been an improvement in technology to shape like
`ergonomic shape hole of head-insert` with latex-form, memory-form
by `forming & expansion molding system` but no attempts were
made to utilize it in field of the pillow.
[0035] And also in the field of chair manufacture, due to the
internal materials, exterior shells and the manufacturing process,
manufacturer of chairs were in no position of adopting the accurate
figure of `shape of half-sphere` and `shape of half-cylinder` on
their products. Even making `ergonomic shape hole of head-insert`
on chairs, they could not find methods to customize the head size
with standard size of hole and to adjust the position of hole for
everybody in conventional system of production and traditional
structure of chairs. It can be inferred that, in spite of demands
for such inventions, the conventional system of production could
not commercialize an `ergonomic shape hole of head-insert` due to
the difficulties in standardization of hole size, limitation of
mass-production and adjustment of hole position. Even advanced
structure of chair such as headrest-attached type (including
driver's seat of car) was not equipped with `ergonomic shape hole
of head-insert` due to different purposes of use and
internal/external materials of headrest.
[0036] `Ergonomic shape hole of head-insert` of this invention in
fields of pillows and chairs has not been utilized for
commercialization in public and has not yet been applied for patent
with progressed function of combined-structure after embodiment of
the advanced figure. Thus this invention is the first attempt with
the concept of practical use and commercial utilization for various
fields as function of `pillow/headrest` after embodiment of `shape
of half-sphere` and `shape of half-cylinder` and reconstitution of
combined-structure with applicable objects (pillow and chairs,
etc)
[0037] There are two kinds of manufacturing methods of `ergonomic
shape hole of head-insert` in this invention.
[0038] The first method is `forming & expansion molding system`
with materials of latex-form, memory-form and sponge. It is a
normal production method with existing skills, which does not seem
difficult to proceed the production of this invention.
[0039] The second method is `drilling cutting system` which uses a
drilling machine (drawing code 14 of FIG. 13) to make `ergonomic
shape hole of head-insert` on basis forming products (drawing code
16 of FIG. 13) of memory-form and sponge which was prepared by the
system of `expansion block molding.` Drilling machine can easily
cut memory-form and sponge due to their soft texture, (excepting
latex-form due to drilling difficulty) and the cut surface does not
necessarily be precise and neat because products of
`pillow/headrest` will be used after covered by textured fabrics as
exterior shell. In case of memory form, it requires special process
of quick freezing, because it becomes much flexible and soft due to
high temperate in summer season and becomes difficult to do
drilling-cut, Tools and the process of drilling-cut refers to the
FIG. 13. Regarding the process of mass production, basis forming
products is drilled for making `ergonomic shape hole of
head-insert` and is cut for size of height and each piece one by
one moving along the conveyor belt. Lastly, hole of air-flow can be
made on pillow/headrest by drilling of small diameter as much as
necessary.
[0040] bb) Proper selection of material for `pillow/headrest` and
of exterior shell fabrics necessary to reveal curve-line of
`ergonomic shape hole of head-insert` and soft hand-feel with
flexibility.
[0041] 1) For Function of Main Pillow in Bed and Sub-Pillow
[0042] Latex-form, memory-form and sponge are used for manufacture
of pillow (but memory-form is excepted for main pillow in bed
especially due to easy variation according to the temperature, for
example, distorted by weight of human head in warm temperature and
hard hand-feel in cold temperature).
[0043] 2) For Headrest Function of Sofa and Chairs
[0044] Latex-form, memory-form are used for headrest function of
sofa and chairs. (Sponge is excepted due to poor hand-feel)
[0045] 3) For exterior shell fabrics of `pillow/headrest` should be
soft and elastic to reveal curve-line of `ergonomic shape hole of
head-insert` as much as possible. Not only the function but also
appearance is important for exterior shell and should be anti-flame
(modacrylic fibers is recommendable as non-flammable material) for
prior prevention of fire. Therefore proper exterior shell would be
spandex knitted fleece fabric which has proper function of surface
softness, flexibility and appearance.
[0046] cc) Embodiment for Remodeling Structure of Applicable
Objects and Assembly Method with `Pillow/Headrest`, and Relatively
Condition of Standardization & Unification for
`Pillow/Headrest`
[0047] 1) Bedroom Pillow
[0048] The `combined model` which gathers `basic model`(drawing
code 3 of FIG. 4) and `extension model`(code 4 of FIG. 4) are
manufactured one by one as separated structure instead of
all-in-one and are inter-combined automatically by exterior shell
during the usage. Later they can be divided after opening the
zipper and exterior shell can be removed for washing. Some
exceptional height and external size of `basic & extension
model` of `pillow/headrest` can be adjusted in various according to
special requests during the process of production. For some cases,
size of `basic model` can be enlarged without `extension model` for
following of wide requirement of consumers. And also `ear recess`
(drawing code 5 of FIG. 4) is provided for comfortable sleeping
without crooking of ear during side turning of body and face. We
often move body when sleeping if we do not feel comfortable on our
head and neck but we enjoy deep sound sleep for long period of time
in straight posture with little movement, if head and neck are in
comfortable condition. [0049] `Basic model`(code 3 of FIG. 4): Main
area used for sleeping straight is same as `standard model` of
`pillow/headrest` in this invention. [0050] Extension model (code 4
of FIG. 4): this area is used during body movement to right and
left, and may be useful in relieving pain of neck and shoulder
because height of `extension model` is close to height of
shoulder.
[0051] 2) Pillows in Outdoor Activities Such as Camping and
Picnic
[0052] The pillow of `standard model` of pillow/headrest` (drawing
code 3) can be used under back of the neck/head in normal way and
the height of pillow can be adjusted with attached `triangle shape
panel` (drawing code 34 of FIG. 7) with a velcro tape (drawing code
35 of FIG. 7), if necessary.
[0053] 3) Pillows for Existing Reclining Chairs and Automobile
Seats
[0054] `Standard model` of `pillow/headrest` (drawing code 3) can
be used under neck and head when we sleep or rest on existing
reclining chair and automobile seats after reclining backward. If
necessary, `triangle shape panel` can be used for adjustment of
height of `pillow/headrest`
[0055] 4) installed-headrest of chairs (office head-back chairs,
reclining chair and seat of vehicle, especially passenger's seat of
long distance transportations such as airplane, ship, train and
buses)
[0056] `Standard model` of `pillow/headrest` can be used after
assembly with seat/chair of which body is remodeled and
restructured properly (FIGS. 5 & 11). Especially the art of
this item as important object of this invention will further be
described in details for remolding and restructure of chair in
`MODE OF INVENTION`
[0057] 5) Headrest for Sofa
[0058] `Standard model` and variety of bigger sizes of
`pillow/headrest` can be used as pillows after putting it on place
of cut-shape at head-laid area of sofa (code 6 of FIG. 6). Users
can get effect of height adjustment of `ergonomic shape hole of
head-insert` of `pillow/headrest` by the rolling movement of
`half-moon shape panel` (drawing code 44 of FIG. 6), which is
attached down of pillow/headrest`. For proper rolling movement
function of `half-moon shape panel` at the users' request, its
material should be harder and in a shape of round circle. As for
the `pillow/headrest for back-seat of private car, `half-moon shape
panel` can be used as same as sofa.
[0059] 6) Headrest for Back Seat of Private Car
[0060] During the course of production for back seat of the private
car, the seat is remodeled with the `square shape inset hole`
installed together with the `standard model` of
`pillow/headrest`(method and shape of assembly referred to the FIG.
8 and drawing code 10 of FIG. 9). Another method is remodeling the
body of the seat with shape of `L` as same as sofa. Because this
back seat of private car cannot be reclined backward like sofa,
`half-moon shape panel` (drawing code 44 of FIG. 6) will be useful
for height adjustment of `ergonomic shape hole of head-insert`
[0061] For complete assembly and compatible use with various
applicable objects, external shape of `pillow/headrest` should be
unified in one size which is expected to be about 26 cm-28 cm of
width, 18 cm-20 cm of length and 10 cm-12 cm of height. As shown in
FIG. 1 shows, drawing code `a`, indicating the width of
`pillow/headrest` , is the basis for standardization of square
shape inset holes of applicable objects and `pillow/headrest`. It
becomes unchangeable once fixed in one size for the compatibility
and easy assembly for `pillow/headrest` with applicable objects.
The drawing code `b`, indicating the length of `pillow/ headrest`,
is adjustable portion of 18 to 20 cm depending on the applicable
objects and sometimes, on circumstances. The drawing code `c`,
indicating the height of `pillow/headrest`, categorizes the size of
`ergonomic shape hole of head-insert` into the size group of S/M/L
that is classified based on survey of standardized head size.
Exceptionally for bedroom pillows, the height and external size can
be changed under the adjustment of production procedure as per
consumer requirement.
[0062] dd) The position adjustment function for `pillow/headrest`
of chairs.
[0063] We have two kinds of installation methods so that the
low/high position of `pillow/headrest`can be adjusted anytime
according to the user's sitting head height (FIG. 11).
[0064] 1) Type A (FIG. 10)
[0065] Users can adjust the low/high position of `pillow/headrest`
to their sitting head height by the direct attach and detach
feature when sitting on chairs with `pillow/headrest` installed.
Velcro tape (drawing code 11 of FIG. 10) is attached to both sides
of `pillow/headrest`and `square shape insert hole` to fix the
adjusted position (or other exterior shell fabrics with such
function as velcro tapes can also be used). The type A will be used
for production of new chairs or for airplane seats due to the lower
risk of theft than that of transportations. As for the remodeling
of existing chairs, the method of `aid component tray-insert` (FIG.
14) will be appropriate.
[0066] 2) Type B (FIG. 12)
[0067] This installation method of `pillow/headrest` on chair body
is an indirect insert method using box-shaped `aid frame`
components (drawing code 9 of FIG. 12). This `aid frame` can
install `pillow/headrest` and is inserted into the `square shape
insert hole` of chair body. Metal or strong synthetic resin will be
used as its material and the size of `aid frame`(drawing code 12)
will be less than `pillow/headrest` so that it should not touch the
human head when sitting on chair. `Insert pole` (drawing code 8) is
inserted into `hole` of tube shape (drawing code 13) for assembly
and position adjustment of `pillow/headrest` with chair body. This
method can be used for new production only and for seats of trains
and buses due to the low risk of theft.
Advantageous Effects
[0068] aa) Convenience and efficiency : Enhancement in comfortable
living
[0069] 1) For sleeping and watching TV in bed (using it as main and
aid pillow)
[0070] 2) For sleeping in outdoor camping areas (hand-carrying in
rucksack and separating from pillow/headrest`--installed back seat
of private car)
[0071] 3) For sleeping on passenger's seat of long distance
transportations such as airplanes, ships, trains and buses
[0072] 4) For relaxing and sleeping on reclining chairs and office
chairs with head-back support
[0073] 5) For relaxing and sleeping on sofa or on back seat of
automobile
[0074] 6) For relaxing and sleeping on driver's seat of private car
after reclining backward (simply by laying the neck and the head on
`pillow/headrest`. Existing driver's seats are not suitable to
relax on or sleep on due to the uncomfortable shape and hard
texture).
[0075] 7) For relaxing on and sleeping on existing reclining chairs
(same method as driver's seat of car)
[0076] bb) Practicality
[0077] 1) The `pillow/headrest is standardized in size and shape:
it can be used for multi-purposes and compatible use.
[0078] 2) `Pillow/headrest` comes in small size: it very handy and
portable. Practical method of hand-carry is to down size the
`pillow/headrest` after putting it inside of poly-bag (called
clean-bag) to press it flat and tying the mouth of the bag tight to
keep it flat shape in vacuum until un-packing for using
[0079] cc) Economics
[0080] 1) To save natural resources and to lower the production
cost by recycling the existing chairs.
[0081] 2) To enjoy high business value with substituting
application to variety of other fields.
BRIEF DESCRIPTION OF DRAWINGS
[0082] FIG. 1 is a perspective view of standard `pillow/headrest`
which is a core device in this invention.
[0083] FIG. 2 is a cross sectional view of status of
pillow/headrest when sitting on chairs.
[0084] FIG. 3 is a front view of `ergonomic shape hole of
head-insert` which is fundamental concept of this invention.
[0085] FIG. 4 is a perspective view of `combined model` of pillow
which is consist of `basic model` and `extension model` for using
in bed.
[0086] FIG. 5 is a perspective view of `pillow/headrest` combined
with chair body.
[0087] FIG. 6 is a status view of `L` cut shape of sofa head and
placement of `pillow/headrest` and additional status view of
assembly of `half-moon shape panel` with `pillow/headrest`and
function of direction/height adjustment.
[0088] FIG. 7 is perspective view of several assembly status of
`standard model` pillow with `triangle shape panel` for height
adjustment and view of velcro tape attached to pillow and
panel.
[0089] FIG. 8 is a perspective view of status of standard `pillow/
headrest` installed on back seat of private car.
[0090] FIG. 9 is a perspective view of remodeled back seat of
private car.
[0091] FIG. 10 is an illustrative view of assembly status of
`pillow/ headrest` with chair body by type A of adjustment function
for low/high position of `pillow/headrest` and position view of
velcro tape which is attached to both side of pillow/headrest and
insert-hole of chair.
[0092] FIG. 11 is a perspective view of adjustment status for
"pillow/headrest` of chair
[0093] FIG. 12 is an illustrative view of assembly status of
`pillow/headrest` on `aid frame` with chair body by type B of
adjustment function for low/high position of `pillow/headrest`, and
a view of shape and assembly status of `aid frame` which
`pillow/headrest`can be installed on.
[0094] FIG. 13 is a sectional and plane view of process for
`drilling cutting system` which is one of production method for
`ergonomic shape hole of head-insert` and a perspective view of
drilling tool.
[0095] FIG. 14 is an illustrative view of assembly process for `aid
component tray-insert` with pillow/headrest and chair body.
[0096] FIG. 15 is an illustrative view of actual remodeling
procedure of existing chair by the method of `aid component
tray-insert`
[0097] FIG. 16 is a perspective view of self-separation and self-
assembly of `aid component tray-insert` for adjustment of its
depth/ height.
[0098] FIG. 17 is a perspective view of ` square shape insert hole`
for installment of `pillow/headrest`on head part of chair body as
`body type` which is made by the `injection molding` system or
forming expansion molding` system
[0099] FIG. 18 is a perspective view of `ergonomic shape hole of
head-insert` on head part of chair body as `direct type` which is
made by the `forming expansion molding` system or `drilling
cutting` system, and is a perspective view of its assembly
status.
[0100] FIG. 19 is a sectional plane view of fundamental concept to
embody the `ergonomic shape hole of head-insert` according to size
group of `S/M/L` (example for size group of S/L)
EXPLANATIONS ON DRAWING CODES OF FIG.
[0101] 1. `Shape of half sphere` which copies the back shape of
human head as a part of `ergonomic shape hole of head-insert`
[0102] 1-2. Area which is a `shape of half-cylinder` (not `shape of
half-sphere`)
[0103] 2. `Shape of half-cylinder` which copies the back shape of
human neck as a part of `ergonomic shape hole of head-insert`
[0104] 3. `basic model` of pillow as `standard model` of `pillow/
headrest` (`molding of head shape hole`)
[0105] 4. `extension model` which is a part of bed pillows
[0106] 5. ear-recess that belongs to the `extension model` of
pillow
[0107] 6. remolded figure of "L" letter shape on head part of
sofa
[0108] 7. normal sofa pillow
[0109] 8. insert pole of `aid frame` for assembly with chair
body
[0110] 9. figure of `aid frame` (slightly smaller size than
`pillow/headrest`)
[0111] 10. Remodeled figure of back seat of private car for
installment of `pillow/headrest`
[0112] 11. Velcro tape attached to both side of `pillow/ headrest`
and `square shape insert hole`
[0113] 12. Smaller sized `aid frame` compared to pillow/
headrest
[0114] 13. Insert tube hole for inserting pole of `aid frame` on
chair body
[0115] 14. Shape of drilling tool for `drilling cutting` system
[0116] 15. Cross sectional view of `ergonomic shape hole of
head-insert` made by `drilling cutting` system
[0117] 16. Basic forming products, created from `expansion block
molding` system, that will be used to manufacture the `pillow/
headrest` through the `drilling cutting` process. They can be in
one unit or block shape depending on the situation. Thy can be cut
in parts by cutting knife at the final stage after the `drilling
cutting` process.
[0118] 17. Cross sectional view of `pillow/headrest` made by the
`drilling cutting` system
[0119] 18. Cutting knife to cut into certain units of
pillow/headrest after the `drilling cutting` process. The size
(height) of pillow/headrest` is determined by this knife
cutting.
[0120] 19. Remnants from the knife cutting process of
`pillow/headrest.` They determine the size (height) of
`pillow/headrest`; the more they cut off, the lower the height of
pillow/headrest (drawing code c) becomes.
[0121] 20. `Aid component tray-insert`
[0122] 21. Upper part of chair body made by with square shape
insert hole of `pillow/headrest`
[0123] 22. square shape insert hole which is made by `injection
molding` system or` forming expansion molding` system for assembly
of `pillow/headrest`
[0124] 23. Protruding part on both right/left inside wall of square
shape insert hole to avoid slippage of `pillow/headrest`
[0125] 24. Upper part of chair body made by `forming expansion
molding` system or `drilling cutting` system with `ergonomic shape
hole of head-insert`
[0126] 25. Remainder exterior shell on top line of chair head from
cutting for making square shape insert hole after remodeling of
existing chairs, which will later be pasted into top inside of `aid
component tray-insert`
[0127] 26. Edge wing of `aid component tray-insert` pasting the
cut-area of exterior shell
[0128] 27. Bottom piece of `aid component tray-insert`
[0129] 28. Border piece of `aid component tray-insert` of which
height should be adjusted according to the thickness of remodeled
existing chair body
[0130] 29. Enlarged view of assembly status of bottom piece and
border piece. Because `aid component tray-insert` itself has a
wing, it should be produced through `injection molding` system by
separating the bottom piece and border piece in order to enable the
depth/height adjustment function. (Although the assembly is not
very solid, it doesn't come off easily as long as the wing of `aid
component tray-insert` is pasted with exterior shell and it is
fixed by the screw on the chair body).
[0131] 30. Screw hole of `aid component tray-insert` to fix at the
chair body
[0132] 31. Protruding parts on both right/left inside wall of `aid
component tray-insert` to avoid slippage of `pillow/headrest`
[0133] 32. Bonding pole of upper part and chair body for body
type`
[0134] 33. Bonding pole of upper part and chair body for `direct
type` with low/high position adjustment of `ergonomic shape hole of
head-insert`.
[0135] 34. `Triangle shape panel`
[0136] 35. Velcro tape for assembly of `pillow/headrest` and
`triangle shape panel`
[0137] 36. `Square shape insert hole` where `aid component
tray-inert` will be placed after cutting upper part of existing
chair with electric saw for remolding
[0138] 37. Cutting line which is marked for easy cut with electric
saw.
[0139] 38. Cut edge of exterior shell which will be pasted on edge
wing of `aid component tray-insert`
[0140] 39. Plane section view of small size (`S`) of `ergonomic
shape hole of head-insert`
[0141] 40. Plane section view of big size(`L`) of `ergonomic shape
hole of head-insert`
[0142] 41. Remodeled existing chair body with `square shape insert
hole` for installment of `pillow/headrest`
[0143] 42. Cutting line to build the small-sized
pillow/headrest
[0144] 43. Cutting line to build the large-sized
pillow/headrest
[0145] 44. `Half moon shape panel` for sofa and back seat of
private car.
[0146] 45. Normal cushion with waist support.
[0147] 46. Velcro tape for assembly with `half moon shape panel`
and `pillow/headrest`
[0148] 47. A perspective view of the frame (one kind of `aid
frame)` to assemble the head part of chair and chair body in
`direct type.` The size and shape come at reasonable standard and
it is equipped with sitting height adjustment function.
[0149] 48. Upper part of chair body with different reclining angle
and shape in every chairs.
[0150] 49. Enlarged and adjusted standard `pillow/headrest` in
external size for wide convenient use according to consumer's
requirement in necessity.
[0151] a. Width of `pillow/headrest`
[0152] b. Length of `pillow/headrest`
[0153] c. Height of `pillow/headrest`
MODE FOR THE INVENTION
[0154] More details on the core points of this invention will be
described in this column.
[0155] aa) Dimension resolution and manufacturing of `ergonomic
shape hole of head-insert`
[0156] In order to customize the `pillow/headrest` to every user,
`ergonomic shape hole of head-insert` should be produced in three
size groups of S/M/L based on survey on standard size of human head
(For bedroom pillows, production may be separately made for infants
and children, if necessary). During production of
`pillow/headrest`, cutting knife (drawing code 18 of FIG. 13) can
be used for classification of `ergonomic shape hole of head-insert`
into the size group of `S/M/L` in `drilling cutting system` as
shown in drawing code 19 of FIG. 13.
[0157] The concept of dimension resolution for `ergonomic shape
hole of head-insert` is based on the fact that centre of gravity of
human head and neck is placed on one point as shown in FIG. 19. The
insert hole size for head and neck are fixed according to the same
diameter (estimated to be 20 CM for head and 14 CM for neck) and to
each different circle length of S/M/L size group. According to the
circle length of both head and neck, size of `ergonomic shape hole
of head-insert` varies according to the size group of S/M/L under
the principle that the bigger the size of head is, the thicker the
width of the neck is (drawing code 40 for size `L` , drawing code
39 for size `S`). Bigger head size means longer length of head
circle and high cutting position (drawing code 42 & 43 of FIG.
19) by placing closer to the centre of circle because the length of
circle varies according to the cutting position of circle instead
of difference in diameter. As a result, the height of
"pillow/headrest` (drawing code `c` of FIG. 19) is fixed naturally
at size groups of S/M/L.
[0158] In general, diameter of drilling tool should change
according to the size of `ergonomic shape hole of head- insert`.
The reason to choose the other method uses unified diameter of
drilling tool for size group of S/M/L is to simplify production
process of `pillow/headrest` in order to proceed whole size
products in one line of manufacturing. As for `forming &
expansion molding` system , one size mold can produce necessary
size selectively among whole size group of S/M/L depends on
necessity of different size by adjustment of mold inside-unit, of
course although it can proceed different diameter of drilling tool
and different diameter of mold for each size group of S/M/L in
general way.
[0159] bb) Method of restructure for chairs among applicable
objects (passenger seat of airplane, ship, train, bus and office
head-back chairs)
[0160] 1) Combination type [0161] cutting hole type: it provides
accurate `square shape insert hole` on body of chair for assembly
with `pillow/headrest`. And `square shape insert hole` is covered
with same exterior shell fabrics as chair body (such as synthetic
leather, textured fabrics, etc). it is basic method and is suitable
for only new production of chair (drawing code 41 of FIG. 10 and
FIG. 12) [0162] Tray insert type: It adds the `aid component
tray-insert` (drawing code 20 of FIG. 14) to `square shape insert
hole`. It is useful for both new production of chairs and recycling
of existing chairs. `Aid component tray-insert` , as one type of
plastic injection molding products with the shape of tray, plays a
role as a linking-device between "`pillow /headrest` and chair
body. (Refer to FIG. 14). More details will be specified in next
column, as this is one of the most important items in this
invention. [0163] Body type: For another type of chair, it provides
a square shape insert hole (drawing code 22 of FIG. 17) to the head
part of chair body (drawing code 21 of FIG. 17), made by the
`injection molding` system or `forming expansion molding` system
with synthetic resin of somewhat harder material than sponge to
preserve the shape of chair without affecting the soft hand-feel.
In order to improve cushioning, it can be covered with special
fabrics. It is particularly useful for new production of chairs. It
can also be combined with chair body as method of poll-insert
(drawing code 32 of FIG. 17). For the low/high position adjustment
of `pillow/headrest`, it adopts type A
[0164] 2) Direct type: For more another type of chair, it provides
an `ergonomic shape hole of head-insert` on head part of chair body
(drawing code 24 of FIG. 18) directly by `forming expansion
molding` system or `drilling cutting` system with materials of
latex-form, memory-form and sponge. It is useful for new production
of chair. For function of both low/high position adjustment and
assembly with chair body, it adopts `aid frame` enlarging type B
(drawing code 33 of FIG. 18).
[0165] cc) It now states more specified contents on `aid component
tray-insert` (FIG. 14) which can be used effectively for new
production of chairs and recycling use of existing chairs, and
particularly which can fulfill the purpose of standardization with
restructuring of entire types of chairs.
[0166] 1) Concept: Regarding restructure for body of existing
passenger seat installed in long distance transportations such as
airplanes, ships, trains and buses, `aid component tray-insert`
(injection molding. and called as `tray-insert` after this)) is
designed as an aid component for the purpose that `pillow/headrest`
should be installed neatly and accurately into the `square shape
insert hole` of the seat. This method of `aid component
tray-insert` can serve possibility of effective mass working at
equipped place of existing passenger seat (inside of airplane,
ship, train, bus) and also is useful for a personal consumer to
recycle the existing chairs. This progressed method (FIG. 14) is to
cut the head part of chair body to make regular size of insert
hole, restructure the applicable objects, install tray-insert` into
arranged square shape insert hole and to insert `pillow/headrest`
into `tray- insert`. Whole square shape insert hole of chairs
should be unified to one dimension as per standard size for
compatibility of `pillow/headrest`. This ` tray-insert` is
indispensable to accomplish this purpose of compatible use.
[0167] 2) Aims of Achievement: The aims of this invention are to
reinforce (i) the assembly function and compatibility (ii) the
efficiency and neat look of remodeled chair (iii) the adjustment
function of tray-insert's depth(height), (iv) the locking of
`tray-insert` on chair body, (v) the low/high position adjustment
function of `pillow/ headrest`.
[0168] 3) Solutions [0169] Reinforce the assembly function and
improve compatibility of `pillow/headrest`. It is automatically
solved by using the `tray-insert` [0170] Efficiency and neat look
of remodeled existing chairs (FIG. 15).
[0171] When making square shape insert hole on existing chairs, it
is much cumbersome to patch other exterior shell (synthetic leather
or fabrics) on cut-area neatly but if this `tray-insert` (drawing
code 20 of FIG. 14) were inserted and locked into square shape
insert hole of chair and then cut-exterior shell of cut-area is
pasted with edge wing of `tray-insert`, it would save time and
effort to work on the appearance of chairs.
[0172] The process of cutting head part of chair body to make
precise square shape insert hole (drawing code 36 of FIG. 15) one
by one requires considerable amount of time and efforts, but the
process of making just square shape inset hole for installment of
`tray-insert` can easily be done with much less amount of time and
efforts. In case that sizes of hole were inconsistent, it could
fill the gaps with simple methods. Square shape insert hole are
manufactured after the process of (i) marking its position line
(drawing code 37 of FIG. 15) on center of the head part of chair
body by stamp (stamp-like tool of marking cutting line for easy
working) (ii) cutting left/right side lines and bottom lines of
square shape insert hole position together with exterior shell of
chair (drawing code 38 of FIG. 15) by an electric saw, and (iii)
extracting the internal substance of square shape inset hole
(drawing code 36 of FIG. 15) except for the external shell of top
line (drawing code 25 of FIG. 15). For the good appearance, we
conducted the next process as inserting `tray-insert` into square
shape insert hole and pasting cut-exterior shell of left/right and
bottom side on edge wing of `tray- insert` (drawing code 26 of FIG.
15), while exterior shell of top side (drawing code 25 of FIG. 15)
was left without cutting. It is later pasted into top inside of
`tray-insert` which does not have edge wing because the wing is not
useful for this area, as is the different case for reclining angle
and shape in every chairs (drawing code 48 of FIG. 15). Also, color
of `tray-insert` will be matched to exterior shell color of chair
body to further improve the appearance of the chair. [0173]
Adjustment function of tray-insert's depth/height (FIG. 16)
[0174] Depth/height of `tray-insert` should be changeable according
to the depth of `square shape insert hole` which varies depending
on the thickness of existing chairs. This invention facilitates the
adjustment function designed for compatible usage for every
existing chairs without limitation. This `tray-insert` should be
comprised of two parties separately such as bottom piece (drawing
code 27 of FIG. 16) and border piece (drawing code 26 & 28 of
FIG. 16) when produced by injection molding system, because it has
wing of border piece which is obstacle with depth/height adjustment
of `tray-insert`. Regarding depth/height of `tray-insert`,
generally height of border piece which is just depth/height of
`tray-insert`, can be made in each requested size as one piece
(without separation of bottom and border), and also can be
controlled by combination and separation of injection mold inside.
But general method need many injection molds for production of
`tray-insert` on high cost and within limited process, while this
invention can produce many kinds of `tray-insert` of different
depth/height because it combines bottom piece (drawing code 29 of
FIG. 16) together with many kinds of border piece which is cut as
per requested size of depth/height after injecting one kind
deepest/highest size of border piece. Remainder pieces can be used
for next injection production to save wasted materials. [0175] The
locking of `tray-insert` on chair body (drawing code 30 of FIG.
14). Process of locking `tray-insert` to chair body is only a
simple process before pasting exterior shell on `tray-insert`.
[0176] Adjustment function of low/high position of `pillow/
headrest`.
[0177] In order to adjust the low/high position of
`pillow/headrest`, it follows type A for assembly of
`pillow/headrest` with chair body and it needs jut on both
right/left inside wall of `tray-insert` for avoiding slippage of
`pillow/headrest` (drawing code 31 of FIG. 14)
[0178] 4) Effects: Using of `tray-insert` can raise efficiency by
simple job process and saving of time during remodeling of existing
chair. It can also enhance the value and quality of products by
accurate assembly with `pillow/headrest` and `chair body` and
additionally create practical value by enlargement of compatible
advantage. Recycling of existing chair benefit both in economic
aspects (saving natural resources) and eventually to increase the
convenience of customers. This method of `tray-insert` can create
increasing exclusive demand of `pillow/headrest`, because it can
recycle existing chair after restructuring which will lead
standardization of `square shape insert hole` of chair and
pillow/headrest.
* * * * *