KR101400621B1 - Self-pumping air cushion chair - Google Patents

Abstract

The present invention relates to a seat cushion for a seat occupied by a seat cushion, comprising: a seat cushion for supporting a cushion of a user's head, neck, back and waist; The chair comprises a pedestal having a moving wheel and being supported on the ground; A seat having a vertical support which is horizontally mounted to support a user's buttocks on an upper plate portion supported by an air cylinder or a chair leg and formed to extend from a rear side to an upper side; An air pumping unit installed between the pedestal and the seat, the air pumping unit injecting air as the user sits on the seat; A backrest and a backrest in the form of an air tube provided in the vertical support for supporting the back region of the user and filled with air; An air tube type head mounted on the upper end of the vertical support and filled with air; A pair of armrests mounted on both sides of the seat to support a user's arm; An auxiliary pumping device capable of adjusting the amount of air in the backrest, the backrest and the head restraint by a ventilation lever and a ventilation hole which are manually operated inside the armrest; And a connecting piping part installed between the seat back and the backrest and the headrest in the air pumping part of the seat and the armrest so that the air is supplied to the backrest, the back and the headrest by the air pumping part; .

Description

{Self-pumping air cushion chair}

More particularly, the present invention relates to a chair, and more particularly, to a chair, which is capable of performing an operation corresponding to seat occupancy, that is, an air pressure generated by pressing a seat of a human body, And the gravity type air cushion chair is designed to reduce the fatigue of the back and the head caused by long-time use.

As the living culture of modern people gradually becomes westernized, the time for sitting on the chair becomes increasingly increased due to the spread of the living culture of the sitting style. Especially, for office workers and students, most of the time is spent sitting in the chair, Has become increasingly prominent.

As a result, the functional elements that enable the user to sit comfortably in the chair as well as the design of the outward appearance gradually become more prominent, and the various cushions are provided for each chair, so that the user's hips, waist, A chair that can be supported is being released.

Generally used chairs, particularly office chairs, are variously proposed and widely used depending on the characteristics of the user and the physical condition of the user as chairs made to perform various tasks conveniently in the office.

The office chair comprises a pedestal having a moving wheel and being supported on the ground, a seat horizontally mounted on an upper end of the pedestal so as to support the user's buttocks, a vertical support extending from the rear bottom of the seat, A back support for supporting the upper part of the vertical support on the user's back part and a head support mounted on the vertical support part of the backrest and supporting the user's head part.

In addition, recently, a backrest is provided on the vertical support between the backrest and the seat plate so as to support the waist portion of the user.

The seat and the backrest, the head restraint, and the backrest of the conventional chair configured in this way are configured so that the cushioning material, which is usually made of sponge or the like, is wrapped by a skin made of cloth, leather or the like to provide comfort to the user.

However, the above-described conventional techniques have the following problems.

In the conventional chair, the backrest, the head restraint, the back rest, and the arm rest were designed on the basis of the standard model of the human body and were adjustable only in a certain range, so that it was practically impossible to give satisfaction to consumers of various body shapes. There has been a problem in that it is impossible to finely adjust the body fatigue accumulation, pain, and change of body shape over time for a long time.

The backrest, the head restraint, the backrest, and the armrest adjusting method of the above-mentioned conventional indoor chair are mainly controlled by the mechanical height and provided the cushion feeling by the elasticity of the material itself such as fastener, spring, sponge, rubber, There is a problem in that the degree of adhesion and the degree of cushion can not be appropriately adjusted depending on the user's sitting posture and habit.

Even though the backrest, the head restraint, the back rest, the arm rest, and the like are somewhat adjustable, almost all of the chairs are basically fixed type chairs, and the load of the body is concentrated only on some contact surfaces of the chair, The pressure of the joints, such as the neck or vertebrae, is difficult to disperse evenly, so that the fatigue gradually accumulates when sitting for a long period of time.

Accordingly, it is an object of the present invention to provide a cushioning device, a cushioning device, a cushioning device, and a cushioning device, And an air cushion type chair in which the back and head can be stably supported while avoiding pain on the back and the head even when used for a long time by being adjustable to fit the user's body shape.

Another object of the present invention is to provide an air cushion type chair which is simple in structure and constitutes an air pumping part without a separate electrical power generating device so that the air pumping part can be easily manufactured and installed while pumping air repeatedly have.

Another object of the present invention is to provide a pump-type air-cushion-type chair in which pressure can be variably controlled by the air tube at the waist portion and the neck portion of the user.

It is a further object of the present invention to provide an air pump which has a built-in auxiliary pump at the lower end of the armrest, which is usually used only for the purpose of raising the arm, so as to facilitate auxiliary filling and exhausting of air to the air tube according to the user's intention or selection. Cushion type chair.

It is another object of the present invention to provide an air cushion type chair which is provided with an opening / closing valve to easily adjust the air pressure to the head restraint, the backrest and the back rest according to the user's intention or selection.

Another object of the present invention is to provide an air-cushion type chair which can easily adjust the cushion force to the head restraint, the backrest and the back rest according to a user's intention or selection by providing a pressure adjusting screw.

In order to achieve the above object, an " air-cushion type chair " according to the present invention includes: a pedestal having a moving wheel; A cylindrical column having an air cylinder and a height adjusting valve between the seat and the seat; A seat having a vertical support which is horizontally mounted on an upper end of the pedestal so as to support a user's buttocks and extends from a rear side to an upper side; An air tube type back which is installed in one or a pair on the vertical support to support the back of the user and is filled with air; An air tube-type head rest which is installed at an upper end of the vertical support to support a user's neck and head and is filled with air; An air tube-shaped waistband provided at the upper end of the vertical support for supporting the waist of the user and filled with air; A pair of armrests mounted on both sides of the seat to support a user's arm; An air pumping unit installed between the pedestal and the seat, the air being pumped as the user sits on the seat; A connection piping part installed between the air pumping part and the backrest and the headrest and connecting the air pumped by the air pumping part to be supplied to the backrest and the head restraint; .

The air pumping portion of the " air cushion type chair " according to the present invention includes an air discharge pipe connected to the connection pipe portion and provided inside the lower surface of the seat, the first check valve being installed on the pipe, A housing having a lower portion installed at the lower portion of the seat corresponding to the seat, and a resilient structure provided inside the housing and connected to the lower end of the air discharge pipe to discharge air while being compressed. Or a rubber tube or a corrugated air tube, a piston having an upper surface attached to a lower surface of the air tube and slidable inwardly of the housing, the piston being mounted on an upper end of the pedestal, And an air inflow path formed in the piston and provided with a second check valve on the pipeline, The.

The air pumping portion of the " air-cushion type chair " according to the present invention includes: a support jaw formed horizontally around the lower end of the piston corresponding to a lower surface of the housing; An elastic spring fitted around the piston, and a cylindrical cover attached to the periphery of the housing so as to cover the elastic spring and the support jaw.

The connecting pipe portion of the " air-cushion type chair " according to the present invention includes a first pipe connected to be communicated between the air pumping portion and the backrest, and a second pipe connected to the backrest and the headrest, And a second pipe connected to the second pipe.

The " air-cushion type chair " according to the present invention is connected to the pipeline of the first pipe and is mounted on the vertical support between the seat and the backrest so as to support the waist portion of the user, An air tube type waistband to be filled; And further comprising:

The air cushion type chair according to the present invention is provided with an inlet port and an outlet port which are mounted on a lower surface of one of the armrests and communicate with the inside of the armrest and have a check valve in each of the inlet port and the outlet port, An auxiliary pump of an elastically restorable rubber tubular type for injecting air by pressurization; The connection pipe unit may further include a third pipe connected to be communicated between the outlet of the auxiliary pump and the first pipe.

Further, the armrest of the " air-cushion type chair " according to the present invention includes a press lever which is hinged to an end thereof so as to be rotatable at an upper end thereof so as to press the auxiliary pump on the inner lower surface of the armrest, And a through hole formed in the guide portion to allow the third pipe to pass therethrough. In this case, the pressure lever can adopt a method of moving up and down in addition to the method of rotating movement. In this case, the air cushion pressure can be effectively controlled by providing a check valve, a vent hole and a vent valve instead of the through hole.

The air-cushion type chair according to the present invention is characterized in that the air-cushion type chair comprises a lower portion of the backrest and a lower portion of the backrest so as to open and close the air supply to the headrest, the backrest and the backrest, An on-off valve installed on the first pipe and on the second pipe to the lower portion of the headrest, respectively, and the operation lever is exposed to the rear surface of the vertical support; And further comprising:

The air-cushion type chair according to the present invention is a so-called "air-cushion type chair", which comprises a head restraint, a backrest and a back rest so that the air filled in the head restraint, the backrest and the backrest can be discharged to the outside, Respectively; And is selectively attached.

The air cushion type chair according to the present invention is characterized in that a plurality of the pressure control levers are provided so as to be exposed on the lower surface of the armrest, And a connection pipe communicatively connected between the backrest and the backrest, respectively.

As described above, according to the present invention, the self-filling of air is performed by the operation of seating on the seat, the cushion force is easily formed, the cushioning force of the portion contacting the user's head and the like is increased, And relieves pain and tiredness in the back and the head is stably supported.

In addition, the present invention has an advantage that it can be applied to general office and home chairs by simplifying the construction and installation of the air pumping part at low cost by constructing the air pumping part with a simple structure.

In addition, the present invention has the effect of facilitating auxiliary filling and discharging of air to the air tube according to the user's intention or selection through the auxiliary pump, thereby improving the convenience of use and operation.

Further, according to the present invention, it is possible to mount the auxiliary pump at the lower end of the armrest, so that the convenience of operation can be achieved without requiring a separate space. The air pressure pumped by the seat seats can be connected to the backrest and the head restraint by a series or parallel tube and independently connected to each seat. To adjust the pressure independently for each air bag contained in the head restraint, backrest, backrest and backrest, it is possible to easily adjust the airflow by connecting the auxiliary pump, which is built in the lower part of the armrests, to a separate air bag.

In addition, according to the present invention, it is possible to easily adjust the supply of air to the head restraint, the backrest and the backrest according to the intention and the user's choice by providing an opening / closing valve, thereby improving convenience in use.

Further, according to the present invention, the pressure adjusting screw is provided to easily adjust the cushion force with respect to the head restraint, the backrest and the back rest according to the user's intention or selection, and thus the convenience of use is remarkably improved.

1 is a schematic perspective view of a chair according to the invention,
FIG. 2 is a schematic diagram showing an operating state of a chair according to the present invention;
FIG. 3 and FIG. 4 are enlarged longitudinal sectional views showing the operation of the air pumping unit of the chair according to the present invention,
FIG. 5 is a schematic configuration diagram showing a chair auxiliary pump according to the present invention, FIG.
6 is a schematic vertical cross-sectional view showing a chuck opening / closing valve according to the present invention,
Figures 7 and 8 are schematic side elevation views, showing the armrests of a chair according to another embodiment of the present invention;
9 is a schematic configuration diagram of a chair according to another embodiment of the present invention;
10 is a schematic cross-sectional side view of the armrest of the embodiment according to Fig. 9;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a schematic perspective view of a chair according to the present invention, and FIG. 2 is a schematic structural view showing an operation state of a chair according to the present invention.

As shown therein, the air-cushioned chair according to the present invention comprises a pedestal 10 supported on the ground, a seat 20 mounted on the pedestal 10 and having vertical supports, A headrest 40 provided at an upper end of the vertical support 21; an armrest 50 installed on both sides of the seat 20; An air pumping unit 60 installed between the pedestals 10 and a connection pipe unit 70 installed on the seat 20 and the vertical support 21, (80), and an auxiliary pump (90) installed on the armrest (50).

The pedestal 10 has a plurality of moving wheels 11 and serves to support the seat 20 on the ground.

The seat 20 is horizontally mounted on the upper end of the pedestal 10 and has a vertical support 21 extending from the rear to the upper side to support the user's buttocks. The vertical support 21 is well known in the art for supporting and supporting a space by providing various components including the back 30 on the rear side upper side of the seat 20. [

The backrests 30 are installed in pairs on the vertical supports 21 and are in the form of air tubes filled with air. An air layer is formed on the back of the user so as to correspond to a user's back, And supports the back of the user in a divided state.

The headrest 40 is installed at an upper end of the vertical support 21 and is in the form of an air tube filled with air. An air layer is formed in correspondence with the head of the user to increase the cushioning force on the user's head To support the user's head.

The armrests 50 are provided as a pair, and the lower ends of the armrests 50 are mounted on both sides of the seat 20, thereby supporting a user's arm.

The air pumping unit 60 is installed between the pedestal 10 and the seat 20 so that air is pumped as the user sits on the seat 20. [ That is, the air pumping unit 60 is operated by the weight when the user sits on the seat 20 and the outside air is supplied to the backrest 30 and the head restraint 40 And the inside of the backrest 80. [0035]

The connection piping unit 70 is installed between the air pumping unit 60 and the backrest 30 and the headrest 40 so that the air pumped by the air pumping unit 60 is supplied to the backrest 30 And the head rest 40 are connected to each other.

The connecting pipe unit 70 has a first pipe 71 connected between the air pumping unit 60 and the back 30 so as to communicate with the back pipe 30, And a third pipe 73 connected to the auxiliary pipe 90 so as to communicate between the auxiliary pipe 90 and the first pipe 71, .

The first pipe 71, the second pipe 72 and the third pipe 73 are connected to respective parts of the chair such as the seat 20, the vertical support 21, 50 and the like.

The backrest 80 is connected to the pipeline of the first pipe 71 and is connected to the vertical support 21 between the seat 20 and the backrest 30, And forms an air layer corresponding to the waist of the user to support the user's waist in a state in which the cushion force against the waist of the user is increased.

The auxiliary pump 90 is mounted on a lower surface of one of the armrests 50 and is provided as a resiliently resilient rubber tube so that the user can press the auxiliary pump 90 against the lower surface of the armrest 50 So that air can be supplementarily supplied to the backrest 30, the backrest 80, and the headrest 40 through the third piping 73.

The air-cushioned chair is attached to the first pipe 71 to the lower portion of the waistband 80, to the first pipe 71 to the lower portion of the backrest 30, and to the lower portion of the headrest 40 (100) installed in the second pipe (72), respectively. The opening and closing valve 100 is operated by a user to open and close the supply of air to the head restraint 40, the backrest 30 and the backrest 80.

The air-cushioned chair further includes a pressure adjusting screw 110 installed in the headrest 40, the backrest 30 and the backrest 80, respectively. The pressure regulating screw 110 is a known one capable of discharging air by releasing and tightening a screw. The pressure regulating screw 110 is filled in the head tube 40, the backrest 30, and the backrest 80, So that the air pressure of the head rest 40, the backrest 30 and the back rest 80 can be easily adjusted.

The operation of the air-cushioned chair will now be described with reference to FIG. First, when the user sits on the seat 20, the seat 20 is lowered by the weight of the user to operate the air pumping unit 60 so that the air is pumped from the air pumping unit 60, Is injected into the backrest (80) and the backrest (30) through the first piping (71) and injected into the headrest (40) through the second piping (72) from the backrest (30).

The user is repeatedly seated on the seat 20 in order to completely fill the air with the backrest 80 and the backrest 30 and the headrest 40. [

In the case where auxiliary infusion of air is required to the backrest 80, the backrest 30 and the headrest 40 or when it is difficult to inject air further through the air pumping portion 60, The auxiliary pump 90 located in the armrest 50 is pressed to inject air into the first pipe 71 through the second pipe 72 while being seated on the first pipe 20, The air injected through the piping 71 is injected into the back support 80 and the back support 30 and the head support 40 so as to be supplementarily supported by the back support 80 and the back support 30 and the head support 40 The air pressure is increased.

In a state in which the air pressure of the backrest 80, the backrest 30 and the headrest 40 is fully elevated, the user operates the opening / closing valve 100 to turn the backrest 80, the backrest 30, The first piping 71 and the second piping 72 connected between the backrest 30 and the headrest 40 are closed so that the backrest 80 and the backrest 30 and the headrest 40 are sealed.

In the state where the backrest 80, the backrest 30 and the headrest 40 are hermetically closed as described above, the user can press the pressure applied to the backrest 80, the backrest 30 and the headrest 40, The cushion force of the backrest 80, the backrest 30 and the head restraint 40 is adjusted according to the body shape and the taste of the user by adjusting the air pressure through the adjusting screw 110.

FIG. 3 and FIG. 4 are enlarged longitudinal sectional views showing a state of operation of an air pumping portion of a chair according to the present invention.

As shown in the figure, the air pumping unit 60 of the chair according to the present invention is connected to the connection pipe unit 70 and is installed inside the lower surface of the seat 20, and a first check valve 61a A housing 62 provided at a lower portion of the seat 20 in correspondence with the air discharge pipe 61 and opened at a lower portion thereof; The air tube 63 is connected to the lower end of the air discharge pipe 61 and discharges air while being compressed. An upper surface is attached to the lower surface of the air tube 63 and slides toward the inside of the housing 62 A piston 64 mounted on the upper end of the pedestal 10 and a second check valve 65a formed on the piston 64 to communicate with the inside of the air tube 63, And an air inflow path 65 to be installed.

The air discharge pipe (61) serves as a passage for flowing the air discharged by the air tube (63) to the first pipe (71) in a state where the backflow is prevented. The first check valve 61a serves to prevent the backflow of air in the air discharge pipe 61. [

The housing 62 serves to provide a place where the air tube 63 is installed and supports the piston 64 so that the piston 64 can be slidably inserted and removed.

The air tube 63 is formed in a corrugated shape and functions to discharge the air inside the air discharge pipe 61 while being folded by the pressure of the piston 64.

The air inflow path 65 serves as a path for allowing the outside air to flow into the inside of the air tube 63 in a state in which backward flow is prevented. The second check valve 65a serves to prevent air from flowing back in the air inflow path 65. [

The air pumping unit 60 includes a support pawl 66 formed horizontally around the lower end of the piston 64 in correspondence with the lower surface of the housing 62, An elastic spring 67 which is fitted around the piston 64 between the upper surfaces of the elastic cover 67 and the upper surface of the cylinder cover 66 and a cylindrical cover 67 attached to the periphery of the housing 62 to cover the elastic spring 67 and the support step 66 68).

The supporting jaw 66 serves to support the lower end of the elastic spring 67. The elastic spring 67 elastically biases the lowered sheet 20 by crushing the air tube 63, So that the air tube 63 can be returned to its initial state. The cylindrical cover 68 serves to cover the elastic spring 67 and the supporting jaw 66.

When the user sits on the seat 20, the air pumping unit 60 is lowered while the seat 20 is supported by the pedestal 10, and the housing 62 and the cylindrical cover 68 The air tube 63 is collapsed while being supported by the piston 64 so that the air inside the air tube 63 is injected into the first pipe 71 through the air discharge pipe 61 (See Fig. 4).

At this time, the second check valve 65a receives air pressure downward due to the crushing of the air tube 63, and closes the air inflow path 65. At the same time, the first check valve 61a presses the air pressure toward the upper side And is elastically bent to open the air discharge pipe (61).

In addition, the resilient spring 67 is compressed in a state of being supported by the support jaws 66 by the downward movement of the housing 62.

On the contrary, when the user takes up the seat 20, the housing 62 is raised in a state of being supported by the supporting jaw 66 by the restoring force of the elastic spring 67, And the seat 20 are raised. The upper end of the air tube 63 is raised to the upper side by the lifting of the housing 62 so that the distorted state of the air tube 63 is restored to its original state, Air is sucked (refer to Fig. 3).

At this time, the first check valve 61a receives the suction force to the lower side by the suction force of the air tube 63 and closes the air discharge pipe 61. At the same time, the second check valve 65a sucks the suction force to the upper side And the air inflow path (65) is opened while being elastically bent, so that the outside air is sucked into the air tube (63).

By this operation, the user injects the outside air through the first pipe 71 by the action of sitting on the seat 20.

FIG. 5 is a schematic view showing a chair auxiliary pump according to the present invention.

As shown in the figure, the auxiliary pump 90 has an inlet 91 and an outlet 92 communicating with the inside thereof, and has a backflow prevention valve 93 at the inlet 91 and the outlet 92, respectively .

The inlet port 91 is a passage through which the outside air flows into the auxiliary pump 90 and the outlet port 92 is provided with a passage through which the air inside the auxiliary pump 90 flows into the third pipe 73. [ to be. The check valve 93 prevents the backflow of air through the inlet 91 and the outlet 92.

When the user presses the auxiliary pump 90 by hand, the suction port 91 is closed by the operation of the backflow prevention valve 93 by the air pressure, and the discharge port 92 is opened The air inside the auxiliary pump 90 flows into the third pipe 73 through the discharge port 92 and is supplied to the first pipe 71.

On the contrary, when the user pushes the auxiliary pump 90, the auxiliary pump 90 is restored to its original state by the resilient restoring force of the rubber of the auxiliary pump 90 itself, The inlet 91 is opened and the outlet 92 is closed so that the outside air flows into the inside of the auxiliary pump 90.

Thus, the user pushes the auxiliary pump 90 and then releases the pressurized state, thereby continuously injecting outside air into the first pipe 71 through the third pipe 73.

The auxiliary pump 90 having such a function can acquire the same function by using a known rubber-tubular air injector for injecting outside air.

FIG. 6 is a schematic longitudinal sectional view showing a chair opening / closing valve according to the present invention. FIG.

The opening and closing valve 100 is installed in the first pipe 71 and the second pipe 72 and is configured to expose the operation lever 101 to the rear surface of the vertical support 21.

The open / close valve 100 may be a ball type valve as shown in the drawing, but not limited thereto, various valves can be applied.

As the operation lever 101 is exposed to the back surface of the vertical support 21, the user can directly operate the opening / closing valve 100 to perform the opening / closing operation according to the user's intention or selection.

FIGS. 7 and 8 are schematic longitudinal sectional views showing the armrests of a chair according to another embodiment of the present invention. FIG.

As shown in the figure, the armrest 50 of the air-cushioned chair according to the present invention is rotatably hinged to an end of the armrest 50 to press the auxiliary pump 90 on the inner lower surface of the armrest 50 A guide portion 52 for guiding the rotational movement of the pressure lever 51 and a through hole 53 formed in the guide portion 52 so as to allow the third pipe 73 to pass therethrough, 53).

The pressing lever 51 allows the user to easily press the auxiliary pump 90 by bending the armrest 50 with a finger.

The guide portion 52 serves to guide the operation of the pressure lever 51 and to support the auxiliary pump 90 joined by the pressure lever 51. The through hole 53 serves as a passage through which the third pipe 73 connected to the auxiliary pump 90 passes through the guide portion 52.

When the user presses the pressing lever 51 with his fingers, the pressing lever 51 is rotated to the inside of the armrest 50 from the front end of the armrest 50, The air in the auxiliary pump 90 is discharged through the third piping 73 by pressing the auxiliary pump 90 to crush the auxiliary pump 90 ).

On the other hand, when the user releases the pressure of the pressure lever 51 by releasing the finger, the auxiliary pump 90 is restored to its original state by the elastic restoring force of the rubber pump tube 90, The pressing lever 51 is returned to the original position by pushing the pressing lever 51 outward.

The user presses or releases the pressurizing lever 51 or repeats depression of the pressurizing lever 51 to depressurize the auxiliary pump 90 so as to supplement the air through the third pipe 73 .

8 shows an example in which the user pushes the push lever 51 in a vertical reciprocating manner, and the restoring force can be obtained by the elastic force of the built-in spring or the auxiliary pump. When the user pushes the pressure lever 51 by hand, the auxiliary pump 90 is pressed to close the inlet port 91. The air inside the auxiliary pump 90 rides on the pipe to open the on-off valve 93, And flows into the regulating portion 96.

On the contrary, when the user releases the pressure of the pressure lever 51 by releasing the finger, the pressure inside the pressure regulating part 96 is higher than the pressure of the auxiliary pump 90, so that the on-off valve 93 is closed, 90, the auxiliary pump 90 is restored to its original state and the inlet 91 is opened, and the air is again filled.

When the pressure inside the cushion is higher than the outside air pressure, the pressure regulating part 96 is maintained in the closed state. However, if the ventilating lever 95 is pressed in order to regulate the pressure, the air inside the cushion 94 escapes through the vent hole 94, The pressure of the cushion can be easily adjusted in a sitting position without using the adjusting screw 110.

FIG. 9 is a schematic structural view of a chair according to another embodiment of the present invention, and FIG. 10 is a schematic concave side sectional view of an armrest of the embodiment according to FIG.

As shown in the figure, the air-cushion type chair according to the present invention is provided with a plurality of the pressure adjusting screws 110 exposed on the lower surface of one of the armrests 50, And a connection pipe 111 connected between the pressure adjusting screw 110 and the headrest 40 corresponding to the pressure adjusting screw 110 and between the backrest 30 and the waist support 80, respectively.

The pressure adjusting screw 110 is installed on the lower surface of the armrest 50 so that the user can operate the pressure adjusting screw 110 to adjust the pressure of the air pressure of the headrest 40 and the backrest 30 and the backrest 80 Can be individually adjusted.

The connection pipe 111 serves to connect the pressure regulating screw 110 and the head rest 40 to the backrest 30 and the back rest 80 in a communicative manner. The connection pipe 111 may be embedded in the vertical support 21 and the armrest 50.

While the preferred embodiments of the present invention have been described above, it will be apparent that the same can be applied to the detailed embodiments of the present invention. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: Stand
11: Moving wheel
20: Sheet
21: vertical support
30: Backrest
40: Head restraint
50: Armrests
51: pressure lever 52: guide portion
53: Through hole
60: air pumping section
61: air discharge pipe 61a: first check valve
62: housing 63: air tube
64: Piston
65: air inflow path 65a: second check valve
66: support jaw 67: elastic spring
68: Cylinder cover
70: connecting pipe section
71: first piping 72: second piping
73: Third piping
80: Back rest
90: auxiliary pump
91: inlet 92: outlet
93: Backflow prevention valve
94: vent
95: vent lever
96: Pressure regulator
100: opening / closing valve
101: Operation lever
110: Pressure adjusting screw
111: Connector

Claims (7)

A pedestal 10 having a moving wheel and being supported on the ground;
A seat 20 having a vertical support 21 horizontally mounted on the upper end of the pedestal 10 to support the user's buttocks and extending from the rear to the upper side;
A backrest 30 in the form of an air tube, which is installed in pairs on the vertical support 21 to support the back of the user and is filled with air;
A headrest 40 in the form of an air tube, which is installed at the upper end of the vertical support 21 to support the head portion of the user and is filled with air;
A pair of armrests (50) mounted on both sides of the seat (20) so as to support a user's arm;
An air pumping unit 60 installed between the pedestal 10 and the seat 20 and pneumatically pushed as the user sits on the seat 20;
A first pipe 71 connected to the air pumping unit 60 and the backrest 30 so as to communicate with each other,
And a second pipe (72) connected to the backrest (30) and the headrest (40) so as to communicate with each other. The method according to claim 1,
The air pumping unit (60)
An air discharge pipe 61 connected to the first pipe 71 and installed inside the lower surface of the seat 20 and having a first check valve 61a installed on the pipe,
A housing 62 installed at a lower portion of the seat 20 corresponding to the air discharge pipe 61 and opened at a lower portion thereof,
A corrugated air tube 63 installed inside the housing 62 and connected to the lower end of the air discharge pipe 61 for discharging air while being compressed,
A piston 64 having an upper surface attached to the lower surface of the air tube 63 and slidable inwardly of the housing 62 and mounted on an upper end of the pedestal 10;
An air inflow path 65 formed in the piston 64 so as to communicate with the inside of the air tube 63 and having a second check valve 65a installed on the pipeline,
A support jaw (66) formed horizontally around the lower end of the piston (64) corresponding to a lower surface of the housing (62)
An elastic spring 67 which is fitted around the piston 64 between the lower surface of the housing 62 and the upper surface of the supporting step 66,
And a cylindrical cover (68) attached to the periphery of the housing (62) so as to cover the elastic spring (67) and the support step (66). delete The method according to claim 1,
And is mounted on the vertical support 21 between the seat 20 and the backrest 30 so as to be connected to the pipeline of the first pipe 71 so as to support the waist portion of the user, A waistband 80 in the form of an air tube; The chair according to claim 1, further comprising: The method according to claim 1,
An auxiliary pump (90) made of a resiliently restorable rubber tube type and mounted on the underside of the armrest (50) and having an inlet (91) through which air flows and an outlet (92) through which air is discharged; And
And a pressure lever (51) one end of which is rotatably hinged to the armrest (50) to press the auxiliary pump (90)
Wherein an inlet and an outlet of the auxiliary pump are each provided with a check valve (93) allowing only one directional flow of air. 5. The method of claim 4,
The backrest 30 is attached to the first pipe 71 below the waist receptacle 80 so as to open and close the air supply to the headrest 40, the backrest 30 and the waistcoat 80, And the operation lever 101 is provided on the rear surface of the vertical support 21 so as to extend in the vertical direction in the vertical direction The open / close valve 100 being exposed; The chair according to claim 1, further comprising: The method according to claim 1,
Further comprising a pressure adjusting screw (110) capable of adjusting the amount of air filled in the headrest (40), the backrest (30), and the backrest (80)
Wherein the pressure adjusting screw discharges the filled air by releasing and fastening the screw.

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