KR102027938B1 - Chair with standing up aid - Google Patents

Abstract

The standing assist chair according to the present invention can help the user standing on the seat by simply tilting the seat forward by the movement of the link means and the gas cylinder by simply operating the seat control lever provided in the armrest. have.
Therefore, even those with weak muscles, such as the elderly, can easily assist the standing by simple operation, and can adjust the rotation angle of the seat to assist the standing to fit the weight and body of the elderly and reduce the production cost. There is an advantage to this.

Description

Standing chairs {CHAIR WITH STANDING UP AID}

The present invention relates to a standing auxiliary chair that can help a user sit on a seat. The standing auxiliary chair can rotate the seat forward by a simple operation and can easily adjust the rotation angle of the seat without external power. It is about.

In general, a chair is a furniture on which a person can sit, and includes a backrest, a seat, an armrest part, and a leg supporting the same.

In modern society, as chairs are used in situations such as work, leisure, rest, etc., the time spent sitting on the chair is increasing. Elderly people and musculoskeletal disorders who can stand on their own are more likely to spend time in the chair.

However, elderly people with weak joints and musculoskeletal disorders are most likely to have weak muscles, which are difficult to occur in a chair alone, and many stand-up chairs for the elderly are being developed recently because many fall accidents occur due to incorrect center movement during standing.

Korean Patent Publication No. 2011-0074342 uses the load of the upper body to press the end of the armrest portion, by simultaneously rotating the seat parallel to the armrest portion, while lifting the hips while moving the center of gravity of the upper body forward A functional chair for assisting the standing movement is disclosed.

However, according to the prior art, it is difficult for the elderly and the like who are weak in strength to voluntarily use because the user must operate with a force of a certain size or more for the standing assist operation, and the standing assist operation is continuously performed according to the mechanically determined rotation angle and stroke. Because of this, it is difficult to assist in standing up according to the weight and body shape of the user, and there is a problem that an accident such as a fall may occur due to the rapid movement of the center of gravity.

Korean Patent Laid-Open No. 2011-002969 discloses a standing auxiliary chair capable of standing support and reclining operation by guiding seat movement of a chair seat and a back when the electric drive is operated by a seat guide.

However, according to the related art, external power or battery for driving the motor should be provided since power transmission parts such as a pin and a rack for converting the power of the motor into linear reciprocating motion are employed in addition to the electric motor for standing auxiliary operation. As a result, not only the structure is complicated but also the production cost is high.

The present invention has been made to solve the above problems of the prior art, it is possible to rotate the seat forward by a simple operation, and to provide a standing support chair that can easily adjust the rotation angle of the seat without external power There is this.

The present invention provides a seat seated by a user, a seat tilting module provided below the seat and standing forward of the seat, a gas cylinder providing power to the seat tilting module, and controlling the operation of the gas cylinder. It includes a seat control lever for.

The seat tilting module may be provided between a rotating plate attached to a lower portion of the sheet, a fixed plate horizontally positioned below the rotating plate, and between the rotating plate and the fixed plate, and the rotating plate may be inclined forward with respect to the fixed plate. And link means for interlocking.

And the said rotating plate rotates translationally forward and upward together at the time of standing, and rotates translational movement together backwards and downwards at the time of sitting.

The standing assist chair according to the present invention can help the user sitting on the seat by simply tilting the seat forward by the movement of the link means and the gas cylinder by simply operating the seat control lever.

Therefore, even those with weak muscles, such as the elderly, can easily assist the standing by simple operation, and can adjust the rotation angle of the seat to assist the standing to fit the weight and body of the elderly and reduce the production cost. There is an advantage to this.

1 is a perspective view of a standing auxiliary chair according to the present invention.
Figure 2 is a perspective view showing a seat tilting module applied to the standing auxiliary chair according to the present invention.
3a to 3b is a view showing the operating state of the seat tilting module during the operation of the standing auxiliary chair according to the present invention.
4 is a schematic view showing a seat control lever applied to a standing assist chair according to the present invention.
Figure 5 is a schematic diagram showing the mounting structure of the weight measuring sensor applied to the standing auxiliary chair according to the present invention.
Figure 6 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder during the operation of the standing auxiliary chair according to the present invention.
Figure 7 is a graph showing the stroke of the gas cylinder according to the installation angle of the gas cylinder during the operation of the standing auxiliary chair according to the present invention.

Hereinafter, with reference to the accompanying drawings for the present embodiment will be described in detail. However, the scope of the inventive idea of the present embodiment may be determined from the matters disclosed by the present embodiment, and the inventive idea of the present embodiment may be implemented by adding, deleting, or modifying components to the proposed embodiment. It will be said to include variations.

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

As shown in FIG. 1, the standing assistive chair of the present invention includes a base 10, a seat 20, a backrest 30, a pair of armrests 40 and 50, and a leg rest 60. And the seat tilting module 70, the seat control lever 80, and the leg rest control lever 90.

The base 10 is provided in the form of fixing the entire standing auxiliary chair on the floor, as well as stably assisting the standing operation of the user with weak musculoskeletal system, such as the elderly, can be prevented from falling down with the chair. In addition, other component parts are mounted on the upper side of the base 10 by the seat tilting module 70 to be described below.

The seat 20 is a seat plate on which the user can sit, and is configured to sit comfortably by providing a predetermined cushion. In addition, the seat 20 is mounted in a horizontal state above the base 10, it is installed to be tilted forward by the rotating plate 71 (shown in Figure 2) of the seat tilting module 70 to be described later The rotation angle is adjusted by the seat control lever 80 to be described below.

The back portion 30 is provided so that the user can lean on the back, likewise is configured to provide a predetermined cushion to lean comfortably. In addition, the backrest 30 is mounted on the base 10 in the vertical state or inclined rearward, the rear of the fixing plate 72 (shown in Figure 2) of the seat tilting module 70 to be described later It is installed to be fixed.

The armrests 40 and 50 are provided to put the user's hands and arms, which is composed of the right armrest 40 and the left armrest 50 on both sides of the sheet 20, described below. It is installed to be fixed to the seat tilting module 70 to be.

In an embodiment, the front side of the right armrest portion 40 is configured to expose the handle lever 81 (shown in Figure 3) of the seat control lever 80 to be described below, the front of the left armrest portion 50 Although the handle lever (not shown) of the foot rest control lever 90 to be described below is configured to expose, but is not limited.

In addition, the armrests 40 and 50 have a predetermined space therein, and may be configured in a form that can open and close the space by a separate cover, the medication cover time alarm setting button (not shown) ) May be provided.

Of course, the armrests 40, 50 inside the shelf that can be easily pulled out and unfold, or can store health-related items, but is not limited.

The leg support 60 is provided so that the user can raise the leg, likewise configured to provide a predetermined cushion to raise comfortably. In addition, the leg support 60 is mounted downward in the vertical direction in front of the seat 20, is installed rotatably to the horizontal direction as a separate leg support rotation module (not shown), described below The rotation angle is adjusted by the leg rest control lever 90 to be used.

The seat tilting module 70 is a type of module, and is fixed to the upper side of the base 10, and is configured to mount the seat 20, the backrest part 30, and the leg support 60. Applied to the configuration can be implemented standing chairs that can easily rotate the seat 20 forward. Of course, the seat tilting module 70 may control its operation by the seat control lever 80, a 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 right armrest 40 is installed so that some handle lever 81 (shown in FIG. 3) is exposed And a direct connection with the gas cylinder 74 (shown in FIG. 2) of the seat tilting module 70 to be described below, and the detailed configuration will be described below.

The leg support control lever 90 is provided to adjust the rotation angle of the leg support 60, likewise installed on the left armrest part 50 to expose some handle lever, a separate leg support rotation module (not shown) It is connected to control the operation of si).

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

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

Of course, the four-section link 73 and the gas cylinder 74 are provided in pairs so as to connect both sides of the rotating plate 71 and the fixed plate 72 so as to stably drive the seat tilting module 70. Preferably, in the drawings, only one four-section link 73 and one gas cylinder 74 are shown.

The rotating plate 71 has a plate shape in which the sheet 20 (shown in FIG. 1) is mounted on an upper surface thereof, and the first link 731 of the four-section link 73 to be described below is fixed to both front sides thereof. As the first link 731 is rotated forward, the first link 731 is installed to be 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 to mount the weight sensor 713 (shown in FIG. 5) to be described below, the upper plate 711 is fixed to the lower surface of the seat 20, the middle plate 712 is fixed to the lower side of the upper plate 711 by the weight measuring sensors 713 (shown in Figure 5) Is not limited.

The fixing plate 72 has a plate shape fixed to the upper side of the base 10 (shown in FIG. 1), and the second link 732 of the four-section link 73 to be described below is fixed to both rear sides thereof. The fixed state is maintained like the second link 732.

The four-section link 73 is a third link that is hinged between the first link 731, which is a kind of rotary link, the second link 732, which is a kind of fixed link, and the first, second links 731, 732. It consists of links 733 and 734.

In detail, the first link 731 is fixed to the front side of the middle plate 711 of the rotating plate 71, while the second link 732 is fixed to the rear side of the fixing plate 72, the rotating plate When the 71 is horizontal, the first and second links 731 and 732 may all be positioned vertically downward with respect to the rotating plate 71 and may have a plate shape having a cross-section of a 'c' shape. .

In addition, the third link 733 is hinged to the central portion of the first link 731 and the upper portion of the second link 732, the fourth link 734 of the first link 731 A hinge is connected to a lower portion and a lower portion of the second link 732, and the third and fourth links 733 and 734 may have a bar shape.

In this case, the first and second links 731 and 732 may be provided with a plurality of holes 731h and 732h at regular intervals to easily change the hinged position of the gas cylinder 74 to be described below. According to the simulation result, the installation angle of the gas cylinder 74 may be appropriately adjusted according to the weight and body shape of the user.

In addition, one side of the second link 732 may be provided with a separate fixing frame 732a for fixing the armrest portion 40, 50 (shown in FIG. 1), in addition to the backrest portion 30 Various frames for fixing may be further provided, but are not limited thereto.

The gas cylinder 74 is a cylinder that can be provided with a predetermined gas pressure in the compression space therein, hinged to connect between the upper portion of the first link 731 and the lower portion of the second link 732 , To provide driving force to the four-section link (73). Of course, the gas cylinder 74 is connected with a seat control lever 80 (shown in FIG. 4) to be described below.

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 a predetermined gas pressure, and the force acting outside is greater than the gas pressure. If it is small, the total length of the gas cylinder 74 increases as the compression space is increased, but if the externally acting force is smaller than the gas pressure, the length of the entire gas cylinder 74 is reduced as the compression space is reduced. Will be reduced.

On the other hand, when the seat control lever 80 (shown in FIG. 4) to be described below is released, the entire length of the gas cylinder 74 is maintained as it is by fixing the size of the compression space inside the gas cylinder 74.

Of course, the pressure of the gas cylinder 74 is preferably used to fit the body weight and body shape of the user, even when using the gas cylinder 74 of the same pressure by adjusting the installation angle and stroke of the gas cylinder 74 It is possible to provide a standing assist operation that matches the weight and body type of the user.

3A to 3B are views illustrating an operating state of the seat tilting module when the standing auxiliary chair according to the present invention is operated.

When the user is sitting on the seat, as shown in Fig. 3a, the rotor plate 71 and the stationary plate 72 remain horizontal, and the gas cylinder 74 has a predetermined installation angle a with respect to the rotor plate 71. Keep).

When the user pulls the seat control lever 80 (shown in FIG. 4) to be described below and gently lifts the buttocks, the entire length of the gas cylinder 74 increases and moves from FIG. 3A to FIG. 3B. The first, third and fourth links 731, 733, and 734 are rotated about the respective hinges with the 732 fixed thereto, so that the rotating plate 71 connected to the first link 731 is moved upward. It is inclined toward the front, and the standing assist operation to push the buttocks of the user's buttocks.

On the other hand, when the user pulls the seat control lever 80 (shown in FIG. 4) to be described below and at the same time weights the seat with the buttocks, the entire length of the gas cylinder 74 is reduced and moves from FIG. 3B to FIG. 3A. In addition, the rotating plate 71 is moved downward and returned to its original state in a horizontal state, and a stable seating assist operation is performed with the buttocks of the user seated on the seat.

Of course, when the user releases the pull of the seat control lever 80 (shown in FIG. 4) to be described below during 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. This allows the user to stop at the desired position during the standing or seating operation.

4 is a schematic view showing a seat control lever applied to a standing assist 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 dispensing lever 83, and a pair of dispensing wires 84 and 85 as shown in FIG. do.

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

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

The distribution lever 83 is provided to be movable by the main wire 82, the central portion is hinged, and may be fixed to the rear of the fixing plate 72 (shown in FIG. 2) described above, but is not limited thereto. .

The distribution wires 84 and 85 are provided with a pair, and are installed to connect the two sides and the levers of the gas cylinders 74 and 75 with respect to the hinge of the distribution lever 83, respectively.

Therefore, when the user pulls the handle lever 81, the movement of the handle lever 81 is transmitted to the dispensing lever 83 by the main wire 82, and the hinge of the dispensing lever 83 is centered. And both ends of the gas cylinders 74 and 75 are moved 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. A predetermined gas pressure is provided in the internal compression space of the s), and the overall length of the gas cylinders 74 and 75 may vary according to the magnitude of the force provided from the outside, thereby assisting the standing or sitting operation.

On the other hand, when the user releases the pulled state of the handle lever 81, the distribution lever 83 is returned to the original state by the main wire 82, the gas by the distribution wires (84, 85) When the levers of the cylinders 74 and 75 are also returned to their original state, the total length of the gas cylinders 74 and 75 may be fixed as the size of the internal compression space of the gas cylinders 74 and 75 is fixed. The standing or sitting motion can be stopped.

Figure 5 is a schematic diagram showing the mounting structure of the weight measuring sensor applied to the standing auxiliary chair according to the present invention.

Weight measuring sensor according to the present invention is provided to be able to accurately measure the weight in the user sitting state, as shown in Figure 5, the user seating seat 20 (shown in Figure 1) is a rotating plate (71) It is preferable that it is provided inside).

As described above, the rotating plate 71 (shown in FIG. 2) is configured in a form in which the upper plates 711 and 712 are separated from the middle plate, and the upper plate 711 and the middle plate 712 are separated by the weight measuring sensor 713. Are connected to each other.

In detail, the weight measuring sensor 713 is preferably installed in at least four places in order to reduce the measurement error, and the weight measuring sensors 713 are respectively installed in four corner portions of the middle plate 712. Holes 712H are provided.

In this case, the weight measuring sensor 713 may be configured as a plate-shaped piezoelectric element, the outer peripheral portion 713a which is bolted around the hole 712H of the middle plate 712, and bent inside the outer peripheral portion 713a. The inner peripheral portion 713b which is bolted to the upper plate 711 in a possible form, and the measuring unit 713c for generating a voltage change depending on the degree to which the inner peripheral portion 713b is bent relative to the outer peripheral portion 713a. May be, but is not limited to.

Of course, the voltage change measured by each weight measuring sensor 713 can be averaged, and then accurately converted into body weight accordingly.

Thus, if the user lifts his foot while sitting on the seat 20 (shown in FIG. 1), the user's weight acts on both the seat 20 (shown in FIG. 1) and the top plate 711. As the 711 is moved downward, the inner circumferential portion 713b is bent downward with respect to the outer circumferential portion 713a, and a voltage change occurs according to the degree to which the inner circumferential portion 713b is bent with respect to the outer circumferential portion 713a. This voltage change can accurately measure weight.

6 is a graph showing the stress acting on the gas cylinder according to the installation angle of the gas cylinder during the operation of the standing auxiliary chair according to the present invention, Figure 7 is a view of the gas cylinder during the standing auxiliary operation of the standing auxiliary chair according to the present invention It is a graph showing the stroke of the gas cylinder according to the installation angle.

The mounting angle (a) of the gas cylinder to be applied to the standing auxiliary chair of the present invention is changed downwards by 10 ° within a range of 10 ° to 90 ° with respect to a horizontal plane, and an external load of 60 kg is applied to the standing auxiliary chair of the present invention. Simulation results are shown in which the rotation angle of the rotating plate applied to the reciprocating drive for 5 seconds to the target angle of 25 ° upward with respect to the horizontal plane.

As a result of the above simulation, the stress change acting on the gas cylinder is shown in FIG. 6, and the stress acting on the gas cylinder in the rising section in which the user stands up gradually decreases, and the user acts on the gas cylinder in the completely stopped section. The stress is reduced to the minimum, and the stress acting on the gas cylinder gradually increases in the falling section where the user is seated.

However, as the installation angle (a) of the gas cylinder is increased from 10 ° to 60 °, the stress acting on the gas cylinder is reduced as a whole during the ascending and descending sections, while the installation angle of the gas cylinder is increased to 70 °, The stress acting on the gas cylinder at the beginning of the ascending section or at the end of the descending section becomes larger than when the installation angle is 60 °. In addition, as the installation angle of the gas cylinder increases from 70 ° to 90 °, the stress acting on the gas cylinder is increased as a whole over the rising section and the falling section.

Therefore, in consideration of 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 °.

On the other hand, as a result of the above simulation, the stroke change of the gas cylinder is shown in FIG. 7, wherein the stroke of the gas cylinder gradually increases in the rising section in which the user stands, and the stroke of the gas cylinder is maximized in the stop section in which the user is completely raised. The stroke of the gas cylinder gradually decreases during the descent section where the user is seated.

However, as 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, while the installation angle (a) of the cylinder is rather increased to 90 °. The stroke is rather reduced to 70mm.

Therefore, in order to freely design the installation angle a of the gas cylinder within the 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 40,50: armrest
60: leg support 70: seat tilting module
80: seat control lever 90: leg support control lever

Claims (7)

A seat that can be seated by a user; And
A seat tilting module for standing the seat forward,
The seat tilting module,
A rotating part which is fastened to the sheet to rotate the sheet;
A fixing part spaced apart from one side of the rotating part and fixed to a position without moving with respect to the movement of the sheet; And
A trimming link provided between the rotating part and the fixing part to interlock the rotating part and the fixing part so that the rotating part can stand forward with respect to the fixing part,
In the trimmer link,
A first link integrally fastened to the front of the rotating part and moving integrally with the rotating part;
A second link which is integrally fixed to the rear side of the fixing unit and does not move;
A third link hinged to the first link and the second link, respectively;
A fourth link hinged to the first link and the second link, the fourth link lying below the third link,
Both ends are connected to the lower side of the second link and the upper side of the first link includes a power unit extending inclined forward and backward,
A standing assist chair provided with at least two catches on either end of the power unit to allow the installation length of the power unit to vary. The method of claim 1,
The standing auxiliary chair of which the rotating part or the fixing part is provided in a plate shape. The method of claim 1,
The power unit is a standing auxiliary chair is a gas cylinder. The method of claim 3, wherein
The installation angle of the gas cylinder is a standing auxiliary chair 20 to 60 degrees. The method of claim 3, wherein
The gas cylinder is a standing auxiliary chair that the stroke is adjusted to 45mm or more. The method of claim 1,
The hanging portion is a standing auxiliary chair that is a hole. A seat that can be seated by a user; And
A seat tilting module for standing the seat forward,
The seat tilting module,
A rotating part which is fastened to the sheet to rotate the sheet;
A fixing part spaced apart from one side of the rotating part and fixed to a position without moving with respect to the movement of the sheet; And
A trimming link provided between the rotating part and the fixing part to interlock the rotating part and the fixing part so that the rotating part can stand forward with respect to the fixing part,
In the trimmer link,
A first link integrally fastened to the front of the rotating part and moving integrally with the rotating part;
A second link which is integrally fixed to the rear side of the fixing unit and does not move;
A third link and a fourth link which are hinged to the first link and the second link, respectively;
A gas cylinder having both ends connected to the second link and the first link,
One end of the gas cylinder is fastened, the standing auxiliary chair includes at least two holes provided apart from each other to adjust the installation angle of the gas cylinder.

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