WO2007043825A1

WO2007043825A1 - Pelvis protecting chair

Info

Publication number: WO2007043825A1
Application number: PCT/KR2006/004121
Authority: WO
Inventors: Sun Whan Kim
Original assignee: Sun Whan Kim
Priority date: 2005-10-14
Filing date: 2006-10-13
Publication date: 2007-04-19
Also published as: KR100654918B1; JP2009511160A; US20080265641A1

Abstract

This invention relates to a pelvis protecting chair composed with elastic seats. This invention is composed of a base(10) mounted on a stationary part(60) with a castor(66) mounted stand(65), at least one set of seat supports(20) hinged to the base, a spring(30) elastically connecting the base(10) and the seat support(20), seats(50) mounted to the seat supports(20), and armrests(75) and a backboard(70) mounted to the base(10).

Description

[Description]

[Invention Title]

PELVIS PROTECTING CHAIR

[Technical Field]

The present invention relates to a pelvis protecting chair. More

specifically, it is about comprising the seat which is in contact with the user's

pelvis with elastic materials so that it should protect the pelvis.

[Background Art]

Generally, human spine is formed with the cervical vertebrae, the

thoracic vertebrae, and the lumbar. The coccyx, located at the end of the lumbar,

can be the origin of pain due to overwork or sedentariness, and this pain is

called coccygodinia.

Specifically, coccygodinia is a disease which brings pain when the coccyx,

located behind the anus, moves and the coccyx individually is not the cause of

the disease. The disease occurs twice more to women than to men, and it is

usually diagnosed to factory workers or secretaries.

Falling on the backside on a snowy day, or hobbies or work which

consistently gives impact to the coccyx, for example, horse riding, or obstetric

history such as parturition, and dystocia, or diseases like spinal arthritis can be the causes of coccygodinia. It is known that patients of coccygodinia feel pain

when the muscles connected to their coccyx goes through contraction or

relaxation.

Skeletal muscle relaxants can be used for treating this disease, if this

treatment does not bring any progress, local anesthetize or injecting steroids

can help to bring relaxation to the muscles connected to the coccyx. The patient

should work out the muscles at his lower back, and he should also fix his wrong

posture.

For rare cases, when reliable lesions are discovered through radioactive

inspections, surgeries cutting out the coccyx are performed.

So that unless the cause of pain in the coccyx is so definite which can

lead to a absolute cure, the relapse of coccyxodinia can result as a serious

nuisance to the patient.

For other diseases, hemorrhoids is a varix in the rectum and the anus, in

other words, it is the expanded vain of the anus and lower rectum.

Hemorrhoids can be classified as internal hemorrhoids and external

hemorrhoids develops around the anus and is surrounded with very sensitive

tissues, and if thrombus develops, extreme bloat erupts with severe pain. It can

be detected as a hard lump and when it is ruptures, it bleeds. Internal hemorrhoids shows symptoms as painless bleeding and

projection during the action of the bowels beneath the pectinate line. But even

internal hemorrhoid can bring severe pain when a full extrication (extrication at

the anus when it does not go back in the anus when pushed) occurs.

Therefore, even hemorrhoid patients can not sit down in a chair for a

long time because of the severe pain, and feel pain undergoing normal life.

But, comfortable chairs for patients of coccyxodinia or hemorrhoids who

fail pain in their nates area are not developed so that these patients feel

difficulty during everyday life.

To relief this problem, there is the "Chairs with divided seats", which was

registered by the applicant of this invention as Korean Utility Model Reg. No.

20-0260631.

The conception of Korean Utility Model Reg. No. 20-0260631 is to

manually adjust the space between the two seats, using a set of linkages

mounted under the chair.

But the prior chairs that were invented with this mechanism shows some

inconveniences. The user should stand up and unlock the stationary state and

then pull or push the other seat to adjust the space between the seats and then

lock the stationary state. Along with this, the space between the sheets can be adjusted to settled spaces which can not provide minute adjustment.

And for most cases, the chair is used by a single user so that once the

space between the seats, there is no necessary to adjust it again, which leads to

the increase of the manufacturing cost.

And the instillation of the space control linkage leads to growth of weight,

which can lead to inconveniency for handling.

[Disclosure]

[Technical Problem]

Thus, this invention contrives from the described problems that has a

purpose of developing a coccyx protecting chair, which considers the users

physical status and can adjust the space between a set of seats to a certain

amount, and allow vertical adjustments of the seats.

Another object of this invention is to simplify the frame of the chair which

improves the manufacturing.

[Technical Solution]

To reach theses purposes, this invention has at least one set of base

hinges mounted symmetrically on the upper base plate, a base mounted on the

stationary part securing the default height of the chair, at least a single seat

support which is hinged to the aforementioned base, a spring which is mounted between the aforementioned base and the seat base to sustain the resilient

between the two bases, and a pair of seats corresponding to the two seat bases.

The support hinge of the seat support is mounted on the side of the

aforementioned base to behave as a stopper which sustains the seat support at a

uniform angle.

The aforementioned spring is a leaf spring which has one end of the

spring mounted to the topside of the base, and the other end which is upper

curved so that it can absorb the compression from extreme stress, mounted to

the bottom side of the seat support.

The leaf bottom side of the spring is fixed to the seat support.

The base, or the stationary part has a set of armset connected to the

lower part of it, and it also has a backboard attached to it.

The stationary part also includes a height adjustment linkage, and a

caster for making the vertical movement possible.

[Advantageous Effects]

The invention prevents widening of the pelvis for users who are in a

sedentary position for long times, and reduces the pressure on the coccyx so

that the pain to the coccyx can be relieved, and provides convenience to

patients of anal diseases. This invention also increases productivity due to its relatively simple

design.

[Description of Drawings]

Fig. 1 is the structural front view of the Pelvis Protecting Chair.

Fig. 2 is the descriptive front view of the Pelvis Protecting Chair.

Fig. 3 is the structural plane view(A) and the side view(B) of the seat.

Fig. 4 is the structural front view of the seat.

Fig. 5 is the descriptive plane view(A), side view(B), front view(C) of the

base of the seat.

Fig. 6 is the structural plane view(A), side view(B), front view(C) of the

base of the seat.

Fig. 7 is the structural plane view(A), side view(B), front view(C) of the

leaf spring.

Fig. 8 is the disassembly figure of the components which constructs the

main part of the Pelvis Protecting Chair.

[Best Mode]

The prescribed invention is precisely described with reference to the

appended diagrams.

As shown in Fig. 1 and Fig. 8, the Pelvis Protecting Chair is consists of a base(lθ) mounted on a stationary part(65) which has a caster(66) mounted on a

stand(65), two seat supports(20) hinged to the base, a leaf spring(30) to provide

elasticity between the seat and the base, seats(50) mounted on the seat

supports(20), and two armrests(75) and a backboard which are both connected

to the base(lθ).

As described in Fig. 5, there are two symmetrically mounted hinges on

the base(lθ), and the hinges have the first hinge connecting hole(13a) each.

In the center of the base(lθ), there is a connecting part(l la), and there is

a screw holed Ib) to connect with the stationary part(60) in the connecting

part(l la)

The connecting part(l la) is used as the gap for bolt which goes through

the screw holed Ib), and the curved end(35) of the leaf spring(30) insures the

space for lowering the seat.

The base plated 1) is a 2mm thick steel plate for light weight, and for

rigidity, the edge of the plate is tilted toward the down side. It is pressed so that

the center of the plate is projected in the horizontal directionGn the direction of

the hinges(13)).

The seat support(20) is connected with the base(lθ) with 4 hinges(13).

As described in Fig. 6, the support hinge(23) connected to the base hinge(13), is formed downward, and there is the seat instillation(21) mounted on

the seat(50).

The first stage of the seat instillation(21), which is the stationary

stage(34) at the upper end of the leaf spring, and it is connected to the spring

instillation(21a). And there is a connecting hole(21b) for connecting the seat(50).

The supporting hinge(23) has the second connecting hole(23a) which

corresponds to the first connecting hole(13a) of the base hinge(13), and there is

a stopρer(23b) on the edge side of the base(lθ).

As described in Fig. 7, the spring(30) consists a curved mid section(33) at

the point where the seat supρort(20) hinge is linked, and centering around the

mid section(33), the upper part(32) which is in contact to seat support(20), and

the stationary stage(34) which is connected to the upper curved spring of the

seat support(20) is positioned. And centering the mid section(33) the lower

stage(31) connected to the upper part of the base(lθ), and the curved

section(35) which is tilted upward is symmetrically positioned. This curved

section(35) absorbs the impact from extreme weight acting downward.

The main components of seat according to this invention are connected

as shown in Fig. 3 and Fig. 4. The seat support hinge(23) of the seat suρρort(20)

is connected to the base hinge(13) of the base(lθ), and the hinge bolt(40) is used to connect the hinges.

Before connecting the hinge bolt(40), the spring(30) should be

compressed to be set up between the base(lθ) and the seat support(20), and

then the hinge bolt(40) should be tightened.

And the seat(50) should be fixed to the seat supρort(20) with the seat

bolt(55)

As described in Fig. 1, in this invention, the stationary part(60) connected

to the stand(65) can be connected to the base(lθ) and the base can also be

connected to the stationary ρart(60), and the armrests(75), and the

backboard(70), when necessary.

When assembled as above, the space between the seat support(20) and

the base(lθ) sustains a certain amount of distance due to the tension of the leaf

spring(30) which results to a parallel state. The repulsion of the spring(30)

prevents the seat support(20) from being unparallel and moving up, by making

one side of the stopper(23b) at the hinge(23) to be in contact with the side of

the base(lθ).

And as shown in Fig. 2, when the user sits on the seat(50), the force from

the users weight described as the 2 dotted chain line moves through the seat

downward, centering the base hinge(13), and the support hinge(23), so that force that pushes from both sides of the pelvis acts toward the center(the arrow

in Fig. 2) to protect the users pelvis.

[Industrial Applicability]

This invention prevents the pelvis of the patient from becoming wider,

and relieves the pressure of the coccyx to constraint the pain, and provides

convenience to patients with anal diseases.

Claims

[CLAIMS]

[Claim 1]

A pelvis protecting chair comprising:

a base having at least one set of base hinges symmetrically located on

both sides of the top of a base plate, and mounted on a stationary part at a

predetermined height;

at least one set of seat supports with hinges mounted under side thereof

and hinged to the base hinge;

a spring installed at a connecting point of the seat support hinge for

elastically sustaining the seat support; and

at least one set of seats corresponding to the seat support;

[Claim 2]

The pelvis protecting chair according to claim 1, wherein the seat support

hinge of the seat support has a stopper which is in contact with a side of the

base for sustaining the seat support in a certain angle.

[Claim 3]

The pelvis protecting chair according to claim 1, wherein the spring is a

leaf spring, one side of which is connected to the upper side of the base, and the

other side of which is connected to the lower side of the seat support.

[Claim 4]

The pelvis protecting chair according to claim 3, wherein the end portion

of the base side of the leaf spring is curved in an upward direction.

[Claim 5]

The pelvis protecting chair according to claim 3, wherein the end portion

of the seat support side of the leaf spring is fixed at the seat support.

[Claim 6]

The pelvis protecting chair according to claim 1, further comprising a set

of armrests connected to the both sides of the lower part of the base or the

stationary part.

[Claim 7]

The pelvis protecting chair according to claim 1, further comprising a

backboard connected to rear side of the lower part of the base or the stationary

part.

[Claim 8]

The pelvis protecting chair according to claim 1, wherein the stationary

part has a height controlling section and a movement allowing caster.

[Claim 9]

The pelvis protecting chair according to claim 1, further comprising a connecting section at the base for connecting the stationary part, and which is

positioned lower than the base plate.

[Claim 10]

The pelvis protecting chair according to claim 1, wherein the base hinges

and seat supports are 3 sets, respectively.