KR20180038423A - Chair with standing up aid - Google Patents

Abstract

According to the present invention, a standing-aid chair can aid a user who sits on a seat to stand by tilting the seat to the front by a movement of a link means and a gas cylinder when the standing-aid chair simply operates a seat control lever provided in an armrest unit. Accordingly, the standing-aid chair can aid even a person with low physical strength like an elderly person and an infirm to easily stand with a simple operation, and can adjust a rotation angle of the seat, thereby aiding the elderly person and the infirm to stand suitable for a weight and a body shape of the elderly person and the infirm, and reducing the production costs.

Description

{CHAIR WITH STANDING UP AID}

The present invention relates to an upright supporting chair capable of helping a user sitting on a seat to stand upright, and which can rotate the seat forward by a simple operation and can easily adjust the rotation angle of the seat without external power, .

Generally, a chair is a furniture in which a person can sit, and is composed of a backrest, a seat, an armrest, and legs supporting the seat.

In the modern society, chairs are used in situations such as work, leisure, and relaxation. Therefore, the elderly or musculoskeletal disease patients who are able to live independently can live longer in their chairs.

However, most of the elderly and musculoskeletal sufferers with weak joints are not able to get up in the chair alone because of their weak muscles, and many fall accidents are caused by the wrong center shift at the time of standing.

Korean Patent Publication No. 2011-0074342 discloses that when the end portion of the armrest portion is pressed using the load of the upper body, the seat positioned parallel to the armrest portion is simultaneously rotated so that the center of gravity of the upper body moves forward A functional chair assisting the standing operation is disclosed.

However, according to the related art, since a user has to operate with a force of a predetermined size or more for a standing assistant operation, it is difficult for a senior citizen who has a weak muscle strength to use it spontaneously, and a standing assistant operation is performed consecutively in accordance with a mechanically determined rotation angle and stroke It is difficult to assisting the user to stand up according to the body weight and the body shape of the user, and there is a problem that an accident such as a fall may occur due to a sudden movement of the center of gravity.

Korean Patent Laid-Open Publication No. 2011-002969 discloses an upright auxiliary chair capable of standing up and reclining when the electric actuator is operated, the movement of the seat back and the back plate being guided by the seat guide.

However, according to the related art, in addition to the electric motor, an external power or a battery for driving the motor must be provided since the power transmitting portion such as a pinion and a lever for converting the power of the motor into the linear reciprocating motion is employed in addition to the electric motor , Thereby complicating the structure and increasing the production cost.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upright supporting chair capable of rotating a seat forward by a simple operation and easily adjusting a rotation angle of the seat without external power, .

The present invention relates to a seat for a user, comprising: a seat tilting module provided at a lower portion of the seat for standing the seat forward; a gas cylinder for supplying power to the seat tilting module; And a seat control lever.

The seat tilting module includes a rotation plate attached to a lower portion of the seat, a fixing plate horizontally positioned below the rotation plate, and a guide plate provided between the rotation plate and the fixing plate, wherein the rotation plate is inclined forward And linking means for interlocking it.

The rotary plate is rotationally moved in the forward and upward directions together with the rotary plate, and rotates and translates backward and downward together when the rotary plate is seated.

When the seat control lever is simply operated, the standing up chair according to the present invention can help the user sitting on the seat stand up by tilting the seat forward by the movement of the link means and the gas cylinder.

Therefore, even a person with weak muscles such as the elderly can easily assist standing by a simple operation, and the angle of rotation of the seat can be adjusted, so that it is possible to assist standing up to meet the weight and body type of the elderly, There is an advantage to be able to.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an upright supporting chair according to the present invention; Fig.
2 is a perspective view showing a seat tilting module applied to the standing up chair according to the present invention;
FIGS. 3A and 3B illustrate operation of the seat tilting module in operation of the standing up chair according to the present invention; FIGS.
4 is a schematic view showing a seat control lever applied to a standing up chair according to the present invention;
FIG. 5 is a schematic view showing a mounting structure of a weight measuring sensor applied to the standing up chair according to the present invention. FIG.
6 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair according to the present invention.
7 is a graph showing the stroke of the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair according to the present invention.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. It should be understood, however, that the scope of the inventive concept of the present embodiment can be determined from the matters disclosed in the present embodiment, and the spirit of the present invention possessed by the present embodiment is not limited to the embodiments in which addition, Variations.

1 is a perspective view showing a standing up chair according to the present invention.

1, the standing up chair comprises a base 10, a seat 20, a backrest 30, a pair of armrests 40 and 50, a legrest 60, A seat tilting module 70, a seat control lever 80, and a leg-rest control lever 90. As shown in Fig.

The base 10 is provided in such a manner that the entire standing-up support chair is fixed on the floor. It can stably support the standing operation of the weak musculoskeletal user such as the elderly, and prevent the base 10 from falling down with the chair. Further, other components are mounted on the upper side of the base 10 by the seat tilting module 70 to be described later.

The seat 20 is configured to be seated comfortably by providing a predetermined cushion as a seat for a user to sit on. The seat 20 is mounted horizontally on the upper side of the base 10 so that the seat 20 can be tilted forward by a rotating plate 71 (shown in FIG. 2) of the seat tilting module 70 And its rotation angle is adjusted by the seat control lever 80, which will be described later.

The backrest 30 is provided so that the user can lean against the backrest. The backrest 30 can also be provided with a predetermined cushion to rest comfortably. The backrest 30 is mounted on the base 10 in a vertical or rearward inclined state. The backrest 30 is mounted behind the fixing plate 72 (shown in FIG. 2) of the seat tilting module 70 As shown in FIG.

The armrests 40 and 50 are provided to allow the user's hands and arms to be placed on the seat 20 and include a right armrest portion 40 and a left armrest portion 50 on both sides of the seat 20, To be fixed to the seat tilting module 70, which will be described later.

3) of the seat control lever 80 to be described later is exposed on the front surface of the right armrest portion 40. The front surface of the left armrest portion 50 (Not shown) of the leg-rest control lever 90 to be described later is exposed, but is not limited thereto.

In addition, the armrests 40 and 50 may have a predetermined space inside and may be configured to be able to open and close a space by a separate cover. In another cover, a medication time alarm setting button May be provided.

Of course, the inside of the armrests 40 and 50 can be easily taken out and stored in a shelf, or can store health-related items, but is not limited thereto.

The leg-rest 60 is provided to allow the user to lift the leg, and similarly, a predetermined cushion is provided to easily raise the leg. In addition, the leg-rest 60 is mounted to the front of the seat 20 so as to be vertically downward. The leg-rest 60 is installed to be rotatable to a horizontal direction when a separate leg-rest rotation module (not shown) The rotation angle of the leg support control lever 90 is adjusted.

Since the seat tilting module 70 is configured as a module type and fixed on the base 10 to mount the seat 20 and the backrest 30 and the legrest 60, It is possible to implement an upright auxiliary chair which can easily rotate the seat 20 forward by applying it to the configuration. Of course, the seat tilting module 70 can control its operation by the seat control lever 80, and the detailed configuration will be described below.

The seat control lever 80 is provided to adjust the rotation angle of the seat tilting module 70 to be described below. The seat control lever 80 is installed such that a part of the handle lever 81 (shown in FIG. 3) And is directly connected to the gas cylinder 74 (shown in FIG. 2) of the seat tilting module 70, which will be described later, and the detailed configuration will be described below.

The leg-rest control lever 90 is provided to adjust the rotation angle of the leg-rest 60. Likewise, the leg-rest control lever 90 is installed to expose a part of the lever lever on the left arm-rest 50, And the like.

2 is a perspective view illustrating a seat tilting module applied to the standing up chair according to the present invention.

The seat tilting module 70 of the present invention includes a rotary plate 71, a fixing plate 72, a four-bar link 73, and a gas cylinder 74 as shown in FIG.

Of course, in order to stably drive the seat tilting module 70, a pair of the four-link 73 and the gas cylinder 74 are provided so as to connect the rotating plate 71 and the fixed plate 72 with each other However, only one of the four-bar link 73 and the gas cylinder 74 is shown in the figure for the sake of convenience.

1) is mounted on the upper surface of the rotating plate 71. The first link 731 of the four-bar link 73, which will be described later, is fixed to both sides of the rotating plate 71, The first link 731 is rotatable forward as the first link 731 is rotated forward.

In the embodiment, the rotating plate 71 is composed of an upper plate 711 and a middle plate 712 spaced apart from the lower plate 711 for mounting a weight measuring sensor 713 (shown in FIG. 5) The upper plate 711 is fixed to the lower surface of the seat 20 and the middle plate 712 is fixed in a state of being spaced below the upper plate 711 by the weight measuring sensors 713 , But not limited to.

The fixing plate 72 is a plate shape fixed to the upper side of the base 10 (shown in FIG. 1). The second link 732 of the four-bar link 73, which will be described later, And remains fixed like the second link 732.

The four-link 73 includes a first link 731 as a kind of rotating link, a second link 732 as a kind of fixed link, and third and fourth links 731 and 732 hingedly connected between the first and second links 731 and 732. [ Links 733 and 734, respectively.

The first link 731 is fixed to the front side of the middle plate 711 of the rotary plate 71 while the second link 732 is fixed to the rear side of the fixing plate 72, The first and second links 731 and 732 may be vertically downwardly disposed with respect to the rotary plate 71 and may have a plate shape having a cross section of ' .

The third link 733 is hinged to the center of the first link 731 and the upper portion of the second link 732 and the fourth link 734 is hinged to the center of the first link 731, And the third and fourth links 733 and 734 are hinged to the lower portion and the lower portion of the second link 732, respectively.

At this time, the first and second links 731 and 732 may be provided with a plurality of holes 731h and 732h at predetermined intervals in order to easily change the hinging position of the gas cylinder 74, which will be described later, The installation angle of the gas cylinder 74 can be appropriately adjusted according to the body weight and the body shape according to the simulation result.

A separate fixing frame 732a for fixing the armrests 40 and 50 (shown in FIG. 1) may be provided on one side of the second link 732. In addition, a backrest 30, Various frames for fixing may be additionally provided, but are not limited thereto.

The gas cylinder 74 is hinged to connect between the upper portion of the first link 731 and the lower portion of the second link 732 as a cylinder to which a predetermined gas pressure can be applied in an internal compression space , And provides a driving force to the four-bar link (73). Of course, the gas cylinder 74 is connected to a seat control lever 80 (shown in FIG. 4) to be described later.

Therefore, when the seat control lever 80 (shown in Fig. 4) to be described below is pulled, the size of the compression space inside the gas cylinder 74 is varied by the predetermined gas pressure, The total length of the gas cylinder 74 is increased as the compression space is increased. However, if the external force is smaller than the gas pressure, the length of the entire gas cylinder 74 .

On the other hand, releasing the seat control lever 80 (shown in FIG. 4), which will be described below, keeps the entire length of the gas cylinder 74 by fixing the size of the compression space inside the gas cylinder 74.

Of course, it is preferable that the pressure of the gas cylinder 74 be used in accordance with the body weight and the body shape of the user. However, even if the gas cylinder 74 having the same pressure is used, the installation angle and stroke of the gas cylinder 74 are adjusted It is possible to provide an erecting assistant operation suited to the body weight and the body shape of the user.

FIGS. 3A and 3B illustrate operation of the seat tilting module in the operation of the standing up chair according to the present invention.

When the user sits on the seat, the rotary plate 71 and the fixed plate 72 are maintained in a horizontal state as shown in Fig. 3A, and the gas cylinder 74 is moved to a predetermined installation angle a ).

When the user pulls the seat control lever 80 (shown in Fig. 4) and slightly grasps the buttocks, the entire length of the gas cylinder 74 is increased to move from Fig. 3A to Fig. 3B, The first, third, and fourth links 731, 733, and 734 are rotated about the respective hinges while the rotation plate 71 connected to the first link 731 is moved upward And is inclined toward the front side to perform a standing assist operation in which the seat of the user is pushed up.

On the other hand, if the user puts the seat on the buttocks while simultaneously pulling the seat control lever 80 (shown in FIG. 4), which will be described below, the entire length of the gas cylinder 74 is reduced and moves from FIG. , The rotary plate 71 is moved downward and returned to its original position in a horizontal state, and a stable seating assistance operation is performed in a state where the user's buttocks are seated on the seat.

Of course, when the user releases the pulling of the seat control lever 80 (shown in Fig. 4) to be described later in the standing or sitting operation, the length of the gas cylinder 74 is maintained as it is due to the characteristics of the gas cylinder 74 The user can stop at a desired position during standing or sitting operation.

4 is a schematic view showing a seat control lever applied to the standing up chair according to the present invention.

The seat control lever 80 of the present invention includes a handle lever 81, a main wire 82, a distribution lever 83 and a pair of distribution wires 84 and 85 as shown in Fig. do.

The handle lever 81 is provided in one of the armrests 40 and 50 (shown in FIG. 1), and is configured in a form that can be pulled by the user's hand.

The main wire 82 is provided to transmit the movement of the handle lever 81, and it is preferable to embed the main wire 82 so as not to be exposed.

The distribution lever 83 is provided to be movable by the main wire 82. The distribution lever 83 is hinged to the central portion and can be fixed to the fixing plate 72 (see FIG. 2) .

The pair of distribution wires 84 and 85 are installed to connect between the levers of the gas cylinders 74 and 75 on both sides of the hinge of the distribution lever 83.

Therefore, when the user pulls the handle lever 81, the movement of the handle lever 81 is transmitted to the distribution lever 83 by the main wire 82, and the hinge of the distribution lever 83 is moved to the center When the movement of the distribution lever 83 is transmitted to the levers of the gas cylinders 74 and 75 by the distribution wires 84 and 85, the gas cylinders 74 and 75 And the total length of the gas cylinders 74 and 75 can be varied according to the magnitude of the force externally provided to assist the standing or sitting operation.

On the other hand, when the user releases the pulling state of the handle lever 81, the distribution lever 83 is returned to the original state by the main wire 82, and the distribution wires 83, When the levers of the cylinders 74 and 75 return to their original positions, the total length of the gas cylinders 74 and 75 can be fixed as the internal compression space size of the gas cylinders 74 and 75 is fixed The standing or sitting operation can be stopped.

5 is a schematic view illustrating a mounting structure of a weight measuring sensor applied to the standing up chair according to the present invention.

As shown in FIG. 5, the weight measuring sensor according to the present invention is provided so that the user can accurately measure the body weight while sitting. The weight measuring sensor according to the present invention includes a rotating plate 71 (see FIG. 1) 2).

2, the upper plate 711 and the middle plate 712 are spaced apart from each other by the weight measuring sensor 713, and the upper plate 711 and the middle plate 712 are separated from each other by the weight measuring sensor 713, Respectively.

In detail, the weight measuring sensors 713 are preferably installed at at least four positions in order to reduce measurement errors, and the weight measuring sensors 713 are installed at four corners of the middle plate 712 Holes 712H are provided.

The weight measuring sensor 713 may be constituted by a plate-shaped piezoelectric element. The weight measuring sensor 713 includes an outer peripheral portion 713a to be bolted around the hole 712H of the middle plate 712, An inner peripheral portion 713b to be bolted to the upper plate 711 in a possible form and a measuring portion 713c to generate a voltage change according to the degree of bending of the inner peripheral portion 713b with respect to the outer peripheral portion 713a , But is not limited to.

Of course, the voltage changes measured by each weight measuring sensor 713 can be averaged, and then converted to weight accurately.

1) and the upper plate 711, the user's body weight acts on both the seat 20 (shown in Fig. 1) and the upper plate 711, The inner peripheral portion 713b is bent downward with respect to the outer peripheral portion 713a and a voltage change is generated according to the degree of bending of the inner peripheral portion 713b with respect to the outer peripheral portion 713a, The body weight can be accurately measured according to the voltage change.

FIG. 6 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder in the operation of the standing up chair according to the present invention, and FIG. 7 is a graph showing the stress acting on the gas cylinder during the standing assist operation of the standing- And the stroke of the gas cylinder according to the installation angle.

The installation angle (a) of the gas cylinder applied to the standing up chair of the present invention was varied in 10 ° increments in the range of 10 ° to 90 ° downward with respect to the horizontal plane, and an external load of 60 kg was applied, In which the rotation angle of the rotary plate applied to the horizontal plane is upwardly moved to the 25 ° target angle for 5 seconds with respect to the horizontal plane.

As a result of the above simulation, the stress change acting on the gas cylinder appears as shown in Fig. 6, in which the stress acting on the gas cylinder gradually decreases in the rising section in which the user stands, and the stress acting on the gas cylinder The stress is reduced to the minimum, and the stress acting on the gas cylinder gradually increases in the descending section where the user is seated.

However, as the installation angle (a) of the gas cylinder increases from 10 ° to 60 °, the stress acting on the gas cylinder during the rising section and the falling section is entirely reduced. On the other hand, when the installation angle of the gas cylinder is increased to 70 °, The stress acting on the gas cylinder becomes larger at the end of the initial or falling section of the rising section than when the mounting angle is 60 °. Further, as the installation angle of the gas cylinder is increased from 70 ° to 90 °, the stress acting on the gas cylinder increases over the rising section and the falling section as a whole.

Therefore, considering the stress acting on the gas cylinder, it is preferable that the installation angle of the gas cylinder is determined within the range of 20 to 60 degrees.

7, the stroke of the gas cylinder is gradually increased in the rising section where the user stands, and the stroke of the gas cylinder is maximized And the stroke of the gas cylinder gradually decreases in the descending section where the user is seated

However, when the installation angle (a) of the gas cylinder is increased from 10 ° to 70 °, the maximum stroke of the gas cylinder gradually increases to 45 mm or more. On the other hand, when the installation angle (a) The stroke is reduced to 70 mm.

Therefore, in order to freely design the installation angle a of the gas cylinder within a range of 10 ° to 90 °, it is preferable that the stroke of the gas cylinder is determined to be 45 mm or more.

10: Base 20: Sheet
30: backrest portion 40,50: armrest portion
60: leg rest 70: seat tilting module
80: seat control lever 90: leg rest control lever

Claims (7)

A seat on which the user seats;
A seat tilting module provided at a lower portion of the seat for standing the seat forward;
A gas cylinder for providing power to the seat tilting module; And
And a seat control lever for controlling operation of the gas cylinder,
The seat tilting module includes:
A rotating plate attached to a lower portion of the seat,
A fixing plate horizontally positioned below the rotating plate,
And a link means provided between the rotating plate and the fixed plate for interlocking the rotating plate so as to be tilted forward with respect to the fixed plate,
The rotating plate includes:
And when it stands up, it rotates and translates forward and upward together,
And when the seat is seated, rotationally translational movement is performed in the backward and downward directions together.
The method according to claim 1,
Wherein the link means comprises:
A first link hinged to the front side surface of the rotary plate,
A second link fixed to a rear side surface of the fixing plate,
A third link hinged to a central portion of the first link and an upper portion of the second link,
And a fourth link hinged to a lower portion of the first link and a lower portion of the second link.
The method according to claim 1,
The front end of the rotary plate is moved upward forward when the seat tilting module is uprightly driven,
Wherein the front end of the rotating plate is moved downward in a backward direction when the seat tilting module is seated.
The method of claim 3,
In the first and second links,
Wherein the gas cylinder is disposed with a plurality of holes selectively hingably engaged with each other at regular intervals.
The method according to claim 1,
The gas cylinder includes:
And an angle of 20 ° to 60 ° to downward from a horizontal reference plane of the rotary plate.
6. The method of claim 5,
The gas cylinder includes:
Standing auxiliary chair with a stroke of 45 mm or more.
The method according to claim 1,
Further comprising a pair of armrests provided on both sides of the seat and capable of raising a user's arm,
Wherein the seat control lever comprises:
A handle lever provided on one of the armrests and capable of being pulled by a user's hand,
A main wire for transmitting movement of the handle lever,
A distribution lever connected to one end of the main wire and hinged to the center,
And a pair of distribution wires connected between both sides of the hinge of the distribution lever and the gas cylinders and distributing the movement of the distribution lever to the gas cylinders.

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