KR101041621B1 - slim-type variable chair apparatus - Google Patents

Abstract

The present invention relates to a slim standing support device having a thin thickness, and more particularly, to a chair device that assists standing in an indoor entrance to prevent a fall accident of an elderly person. The present invention relates to a slim standing assist device for realizing minimizing the space occupied by the standing auxiliary chair in a narrow indoor hall so that the standing auxiliary chair can have the most simplified form.

Description

Slim type standing chair apparatus {slim-type variable chair apparatus}

The present invention relates to a slim standing support device having a thin thickness, and more particularly, to a chair device that assists standing in an indoor entrance to prevent falling accidents of elderly people, and uses a pulley-type chair lifting structure and a guide to raise and lower the chair. The present invention relates to a slim standing assist device for realizing minimizing the space occupied by the standing auxiliary chair in a narrow indoor hall so that the standing auxiliary chair can have the most simplified form.

Korea is currently experiencing a rapid aging. In 2000, it entered the aging society at 7.2%, and increased to 9.1% in 2005. Experts said that 15.7% in 2020 is an aging society. By 2026, the elderly aged 65 or older exceed 20% of the total population. It is expected to enter society. As a result of the continuous increase in the elderly, the need for product development and evaluation for the elderly is important.

The term 'aging-friendly' has become commonplace since the aging and future society committee used it in its research on 'activities of aging-friendly industries'. The term age-friendly here means that if the elderly are convenient, everyone is convenient. This means that the preference of the elderly based on convenience and safety in the universal design perspective is considered first.

According to a survey by the Korea Consumer Protection Agency (see Fig. 1), elderly safety accidents are more likely to occur in homes such as entrances and bathrooms than outside. In addition, more than 50% of the safety accident types were fall accidents. It is very necessary to develop a variable chair that can prevent such a fall accident and reduce the inconvenience of the elderly at the entrance.

As shown in Fig. 2, when the elderly wear off their shoes, they usually sit down on the floor to wear off and stand up.

As shown in Figure 3, the fall accident in the house is the most occur in the bathroom and occurs after taking off shoes wearing a large left and right movement of the center often occurs fall accidents.

In addition, children are expected to be used not only in the elderly but also in various age groups because they show similar behavior patterns (sitting and sitting off) when they take off their shoes.

Currently, the lifting structure of the standing auxiliary chair device is in the form of a rack, pinion and ball screw.

The lifting structure of the rack and pinion is so thick that the rack's pitch and pinion's diameter (that is, it is difficult to slim down), making it difficult to install in a narrow space.

In addition, the lifting structure of the ball screw has a large diameter of the transfer nut and the thickness of the bearing supporting the ball screw is also thick, which makes it difficult to install in a narrow space.

It is an object of the present invention to provide a slim standing support chair device that can solve the space problem of a narrow indoor entrance while preventing falls of infants and young children.

In order to solve the above-mentioned problem, the slim standing up chair device according to claim 1 of the present invention,

A base fixed to the wall; Elevating unit; A guide part for guiding the lifting part with respect to the base part; wire; A fixing part fixed to the base part to support one end of the wire; A pulley for supporting the other end of the wire; A power transmission unit installed in the lifting unit to transmit rotational power to the winding pulley; Including a chair unit installed in the lifting unit,

The axis of rotation of the take-up pulley is arranged perpendicular to the plane of the base portion.

According to this configuration, the problem of narrow indoor porch is solved by making the thickness as slim as possible by using pulley while preventing the fall of the elderly due to the elevating of the chair.

The slim type standing upright chair device according to claim 2 of the present invention,

It further includes a limit switch for controlling the lifting height of the lifting unit, wherein the limit switch includes a lower limit switch installed in the lifting unit and the base portion, and an upper limit limit switch installed in the power transmission unit and the base portion. do.

According to this configuration, the user can comfortably control the height of the chair by the chair height desired by the chair.

The slim type standing upright chair device according to claim 3 of the present invention,

The fixing part includes a fixed pulley for supporting the wire, a support bracket fixed to the base part to support the fixed pulley, and a support part supported on the support bracket to support one end of the wire.

According to this configuration, since the wire is pulled down from both sides through the pulley, the wire is more securely fixed than the straight wire.

The slim type standing auxiliary chair device according to claim 4 of the present invention,

A through hole is formed in the support bracket, and the support part includes a male screw part inserted into the through hole and a hook to which one end of the wire is formed, and a nut fastened to the male screw part to be caught by the support bracket.

According to this configuration, the tension of the wire can be adjusted while supporting one end of the wire.

The slim type standing auxiliary chair device according to claim 5 of the present invention,

The chair unit includes a folding frame installed on the lifting unit, and a chair installed on an upper surface of the frame.

According to this structure, a chair can be folded and it can contribute to slimmer thickness.

The slim type standing upright chair device according to claim 6 of the present invention,

It is preferable that a case part having a drawing hole formed therein is formed at the front of the lifting part to draw out the folding frame.

According to this structure, since a case part covers the front surface of a standing auxiliary chair apparatus, it is preferable from an interior side.

The slim type standing auxiliary chair device according to claim 7 of the present invention,

The case part is made of an upper case part and a lower case part integrally covering the upper and lower portions of the outlet hole, it is preferable that the lower case part is formed with a receiving groove for accommodating the bottom surface of the folding frame.

According to this configuration, it is only necessary to attach the case part directly to the lifting unit and then assemble it, and the folding frame is accommodated in the receiving groove and is not exposed from the outside, which is preferable in terms of interior.

The slim type standing upright chair device according to claim 2 of the present invention,

When the magnet is mounted on the upper case part and the chair, the chair may be kept folded to contribute to slimming.

As is apparent from the above description, the slim standing support chair device of the present invention has the following effects.

Since the axis of rotation of the take-up pulley is disposed perpendicular to the plane of the base part, the pulley becomes thick as much as the thickness of the pulley, making it as slim as possible and easy to arrange in a narrow interior porch. In other words, if the thickness is thin, the backrest is positioned as close to the wall as possible, so that it is easy to install in a porch of a narrow space.

In addition, by controlling the lifting height of the lifting unit with a limit switch, the user can comfortably rise at the desired chair height.

In addition, the wire is fixed so that it is subjected to a pulling force pulled down from both sides through the fixed pulley, so that the fixing is more secured once than the straight wire.

In addition, the tension of the wire can be adjusted while supporting one end of the wire by hooking the wire to the support bracket by the male screw part and the nut.

In addition, the chair can be folded to contribute to the slimming of the thickness.

Moreover, since the case part covers the front surface of the standing auxiliary chair apparatus, it is preferable from an interior side.

In addition, it is only necessary to assemble after mounting the integral case portion directly to the lifting unit, the folding frame is accommodated in the receiving groove is not exposed from the outside is preferable in terms of interior.

In addition, the magnet is attached to the upper case portion and the chair, thereby maintaining the chair in a folded state can contribute to slimming.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

4 is an exploded perspective view illustrating a slim standing auxiliary chair device according to a preferred embodiment of the present invention, FIG. 5 is a combined perspective view of FIG. 4, and FIGS. 6 and 7 are side views illustrating an unfolded state and a folded state of a chair part. FIG. 8 is a perspective view of a state in which a chair is removed from FIG. 5, FIG. 9 is a perspective view of a case in which a case part is removed from FIG. 8, FIG. 10 is a perspective view of a state in which a folding frame part is removed in FIG. 9, and FIG. 11 is FIG. 10. 12 is a perspective view of a state in which the power transmission unit is removed, FIG. 12 is a perspective view of a state in which the lifting unit is removed in FIG. 11, FIGS. 13 and 14 are front views illustrating the minimum height and the maximum height of the chair, and FIG. 15 is power transmission of the winding pulley. A simplified plan view of the process.

As shown in FIG. 4, the base part 100, the lifting part 200, and the guide part 300 for guiding the lifting part 200 with respect to the base part 100, lifting up and down the lifting part 200. The wire 400, the winding pulley 500, the power transmission unit 600 for transmitting the rotational power to the winding pulley 500 and the chair unit 700 is provided in the lifting unit 200.

The base portion 100 is preferably in the form of a plate fastened and fixed to one wall of the front door. In particular, since the thickness of the base portion 100 has a great effect on slimming, the base portion 100 has a structure that is as thin as possible and fixed to the wall.

The lifting unit 200 has a beam shape disposed on both sides of the base unit 100.

The cross beam 210 is fastened and fixed to the upper end of the lifting unit 200 to serve to hold the two lifting units 200.

Guide portion 300 is composed of a guide groove block 310 is fastened and fixed to the base portion 100, and a guide projection rail 330 guided to the guide groove block (310).

Guide protrusion rail 330 is formed on the rear surface of the lifting unit 200 of the '' 'cross-section.

Therefore, the guide protrusion rail 330 is coupled to the lifting and lowering along the guide groove block (310).

One end of the wire 400 is supported by the base part 100, and the other end of the wire 400 is supported by the winding pulley 500.

In particular, one end of the wire 400 is preferably supported by a fixing portion 410 is fastened and fixed to the base portion 100.

As shown in FIGS. 13 and 14, the fixing unit 410 includes a fixed pulley 411 for supporting the wire 400, a support bracket 413 for supporting the fixed pulley 411, and a wire 400. It is preferable to configure the support portion 415 for supporting one end of the.

The fixed pulley 411 is a pulley 411 on which a rotating shaft is fixed, and is fixedly fastened to the base part 100.

Since the high pulley 411 supports the wire 400 by changing one direction of the wire 400, the fixed pulley 411 takes a structure that withstands a greater tensile force than the wire 400 is fixed in a straight line.

In addition, the fixed shaft (virtual shaft) of the fixed pulley 411 is disposed to be perpendicular to the plane of the base portion 100 to be thickened only by the thickness of the fixed pulley 411 to contribute to slimming.

Support block 413 is a block of the 'b' shape, while supporting the bottom of the fixed pulley 411, serves to support one end of the wire 400.

That is, since the support block 413 supports the high pulley 411, the support block 413 has excellent resistance to breakage (break-away) of the high pulley 411 with respect to the tensile force of the wire 400.

When the high pulley 411 has a half moon shape, the support posture is stable.

The support part 415 consists of the male screw part 417 in which the ring 416 which catches the one end of the wire 400 is formed, and the nut 418 which is fastened to the male screw part 417 and is caught by the support block 413. .

The male screw part 417 is inserted into the through hole 414 formed in the supporting block 413, and is supported by the supporting block 413 when the nut 418 is fastened to the passed male screw part 417.

In addition, the support 415 may adjust the tension of the wire 400 by tightening or loosening the nut 418.

The winding pulley 500 is a component that winds up the wire 400 to raise (raise) or lower the wire 400 while lowering (raise) the lifting unit 200.

That is, when the take-up pulley 500 moves up and down, the lifting unit 200 also moves up and down together.

The rotating shaft 510 of the pulley 500 is rotatably supported by the power bracket 650.

The winding pulley 500 is similar to the fixed pulley 411, and the rotation shaft 510 of the winding pulley 500 is disposed perpendicular to the plane of the base part 100, so that the chair 700 is raised and lowered in thickness. By contributing greatly to slimming, it can be easily installed in the entrance of narrow space.

Therefore, the rotating shaft 510 of the winding pulley 500 and the fixed shaft (virtual axis) of the fixed pulley 411 are arrange | positioned in parallel.

The power transmission unit 600 includes a motor unit 610, a reduction gear unit 630, and a controller (not shown) for driving control of the motor unit 610.

The reduction gear part 630 is comprised by the reduction gear train which transmits the rotational force of the motor part 610 to the gear 631, as shown in FIG. The first gear 631 receiving the power from the reduction gear part is disposed at the front of the power bracket 650, and the first gear 631 is a second gear disposed at the rear of the power bracket 650. Power 633).

That is, the first gear 631 is fixed to a shaft rotatably supported by the second gear 633 and the power bracket 650.

The second gear 623 is engaged with the third gear 635, and the power of the third gear 635 is transmitted to the take-up pulley 500.

The third gear 635 and the winding pulley 500 are fixed to a rotating shaft rotatably supported by the power bracket 650.

The power transmission unit 600 is mounted to the power unit bracket 650, and the power unit bracket 650 is fastened and fixed in a cross shape to the lifting unit 200.

Therefore, since the power bracket 650, the power transmission unit 600, and the winding pulley 500 are connected to each other, when the winding pulley 500 is lifted, the power transmission unit 600 and the power bracket 650. Through the lifting unit 200 is also lifted together.

Chair portion 700 is preferably fastened cross fastening to the lifting unit (200).

The chair unit 700 is composed of a folding frame 710 and a chair 750.

The folding frame 710 supports a frame 711 provided on the bottom of the chair 750, a hinge shaft 713 formed on both sides of the frame 711, and a hinge shaft 713 for hingeably supporting the frame 711. The hinge shaft bracket 715 is configured.

The hinge shaft bracket 715 is cross fastened and fixed to the lifting unit 200, and the chair 750 also moves up and down together with the lifting unit 200.

In this way, the chair portion 700 can be folded back and forth, contributing to the slimming of the thickness.

It is preferable that the case part 800 is installed at the front of the lifting part 200. Therefore, the case part 800 also moves up and down together with the lifting up and down of the lifting unit 200.

The case part 800 preferably includes an upper case part 810 functioning as a backrest, and a lower case 830 supporting the frame 710 integrally.

In addition, it is preferable that a drawing hole 850 through which the frame 711 is drawn out is formed between the upper case part 810 and the lower case 830.

Therefore, the integrated case portion 800 is preferably in view of the design to close the outside when the frame 711 is drawn out from the withdrawal hole 850 and then fitted into the lifting unit 200.

In particular, the lower case portion 830 also serves to support the load of the chair.

The upper surface of the lower case 830, it is preferable that the receiving groove 831 is accommodated to some extent the bottom surface of the frame 711 is formed.

The receiving groove 831 may give a clean appearance by preventing the frame 711 from being exposed to the outside when the chair 750 is unfolded.

Reference numeral 851 denotes a drawing-out finishing material for finishing drawing-out.

In addition, the silk screen glass 870 is preferably attached to the front of the upper case portion 810.

The silk screen glass 870 is a pattern with a backrest, which is used indoors and is the first product that stands out when entering a house by installing at a front door. Therefore, by putting a pattern in the upper case part (backrest) can be positioned as one of the interior elements of the house as well as the role of simple standing support.

As shown in FIG. 7, magnets (not shown) may be placed on the chair 750 and the silk screen glass 870 or the chair 750 and the upper case part 810 so as not to be unfolded when the chair 750 is folded. Do.

Meanwhile, as shown in FIGS. 13 and 14, it is preferable that limit switches 910 and 930 are provided to control the height of the lifting unit 200, that is, the height of the chair 750.

The limit switch 910 is preferably composed of a lower limit (minimum height) limit switch 910 and an upper limit (maximum height) limit switch 930.

The lower limit switch 910 includes a first lower limit switch 911 installed on the lifting unit 200 and a second lower limit switch 913 installed on the base unit 100.

The upper limit switch 930 includes a first upper limit switch 931 installed at the power transmission unit 600 and a second upper limit switch 933 installed at the base 100.

As shown in FIG. 13, when the first lower limit limit switch 911 approaches the second lower limit limit switch 913, the lifting unit 200 stops without going down any further.

On the other hand, FIG. 14 is elevated when standing in the state of FIG. 13, wherein the first lower limit limit switch 911 is released from the second lower limit limit switch 913 and the first upper limit limit switch 931 is the second upper limit limit. When approaching the switch 933, the lifting unit 200 stops without going up any further.

Although the limit switch of the present embodiment uses a sensor that senses magnetism, it is obvious that a touch type limit switch can also be used.

Hereinafter, the determination of the design dimension and the height change width of the chair in consideration of the aged human body dimensions will be described.

[Table] Applied human body dimensions according to design elements

Chair height: The height of the chair was designed by applying the minimum height of the sitting restraint, which represents the length from the sole of the foot to the back of the knee, based on the shorter person. The minimum value is 323.5mm, and it is reflected in the design as 350mm in consideration of the allowance factor considering the height of shoes and the thickness of clothes.

-Chair width: If your chair is wide, you can sit on a person with a small butt, but on a narrow chair, it is inconvenient for a person with a wide butt. Therefore, the design should be based on the maximum value. However, the elderly-friendly variable chair developed in this study does not need to sit comfortably as a chair to assist in standing up, and there is a risk of causing a safety accident when climbing up to the maximum height while sitting comfortably, and considering the characteristics of a narrow indoor entrance. 350 mm in width was reflected in the design.

-Chair Depth: The chair depth is also reflected in the design with an appropriate depth of 300mm, taking into account the characteristics of the variable chair, which is intended to occur more easily than sitting in a comfortable position as with the chair width above.

-Chair back height and width: This product is composed of a driving method that climbs up the guide block by attaching it to the wall, which may cause a safety accident when the head touches the wall. Therefore, the head and the wall should not be touched during operation and should be designed with the proper back height to support the back. Therefore, it is designed to reflect the margin to the maximum value 929.5mm, which is the dimension of the tallest person, so that even the taller person can be used without difficulty.

Height-variable range of adjustable chairs for the elderly

The most important design dimension in the design of the elderly-friendly variable chair is the change in height of the variable chair. The minimum height of the width of the height change was designed to be 350mm based on the female minimum. However, in the case of the maximum height, it is thought that the small person, the large person, or the person can get up at the desired height by designing the big person as a reference. It was designed to be 400mm by applying the minimum 399mm of the horizontal length of the seated hip to indicate the length from the stria to the hip. Also, if the seat height of the chair is less than 500mm, the subjective satisfaction increases as the height increases, and the width of the center moving vibration tends to decrease, but above 500mm, the subjective satisfaction according to the height and the change of the center moving vibration width are not significant. As shown, the variable width of the variable chair was designed to be at least 350mm ~ 750mm, including the chair height of 500mm. Therefore, the user can comfortably occur at the height of the chair desired by the electric control of the height of the variable chair.

As described above, although described with reference to a preferred embodiment of the present invention, the present invention can be variously modified or modified without departing from the spirit and scope of the present invention described in the claims Those skilled in the art will appreciate.

Although the upper case part 810 of the present invention is described separately from the silk screen glass 870, it may be understood as a comprehensive concept. In other words, the magnet is installed in the upper case part is defined as including the concept of silk screen glass.

The present invention is expected to be applicable to similar products, height adjustable wheelchairs or lifts.

1 is a bar graph showing the analysis results of the elderly safety accidents.

Figure 2 is a graph showing the subjective evaluation of knee burden when standing up from a seat height from 5 cm to 40 cm.

3 is a graph showing the amplitude of movement from the center to the left and right when standing at the height of the seat surface from 5 cm to 40 cm.

Figure 4 is an exploded perspective view showing a slim standing auxiliary chair device according to an embodiment of the present invention.

5 is a perspective view of the combination of FIG.

6 and 7 are side views showing the expanded and folded state of the chair portion.

8 is a perspective view of a state in which the chair is removed from FIG.

9 is a perspective view of the case portion removed in FIG.

FIG. 10 is a perspective view of a state in which the folding frame part is removed from FIG. 9; FIG.

FIG. 11 is a perspective view of a state in which a power transmission unit is removed from FIG. 10; FIG.

12 is a perspective view of a state in which the lift unit is removed from FIG. 11;

13 and 14 are front views showing the minimum height and the maximum height of the chair.

Figure 15 is a plan view briefly showing the power transmission process of the pulley.

<Explanation of symbols for main parts of the drawings>

100: base portion 200: lifting portion

210: cross beam 300: guide part

310: guide groove block 330: guide protrusion rail

400: wire 410: fixing part

411: fixed pulley 413: support block

414: through hole 415: support

416: hook 417: male thread

418 nut 500: pulley pulley

510: rotating shaft 600: power transmission unit

610: motor unit 630: reduction gear unit

650: power unit bracket 700: chair

710: folding frame 711: frame

713: hinge shaft 715: hinge shaft bracket

750: chair 800: case

810: upper case 830: lower case

831: accommodation home 850: drawing out

851: Drawer Finishing Material 870: Silk Screen Glass

910: lower limit switch 930: upper limit switch

Claims (8)

A base part 100 fixed to the wall surface; Lifting unit 200; A guide part 300 guiding the lifting part 200 with respect to the base part 100; Wire 400; A fixing part 410 fixed to the base part 100 to support one end of the wire 400; A winding pulley 500 supporting the other end of the wire 400; A power transmission unit 600 installed on the elevating unit 200 and transmitting rotational power to the winding pulley 500; Including the chair 700 is installed in the lifting unit 200, The rotation shaft 510 of the winding pulley 500 is disposed perpendicular to the plane of the base portion 100, When the take-up pulley (500) is lifted, the lifting unit 200 is also lifting the slim standing up chair device. The method of claim 1, Further including a limit switch for controlling the lifting height of the lifting portion, And the limit switch includes a lower limit switch installed at the lifting unit and the base unit, and an upper limit limit switch installed at the power transmission unit and the base unit. The method of claim 1, The fixing part includes a fixed pulley for supporting the wire, a support block fixed to the base to support the fixed pulley, and a support part supported on the support block to support one end of the wire. The method of claim 3, Through holes are formed in the support block, The support part is inserted into the through hole and the male screw portion is formed a ring that one end of the wire is formed, and a slim standing up chair device comprising a nut fastened to the male screw portion and caught on the support block. The method according to any one of claims 1 to 4, The chair unit is a slim standing support chair device including a folding frame installed on the lifting unit, and a chair installed on the upper surface of the frame. The method of claim 5, Slim type standing auxiliary chair device is provided on the front of the lifting unit is provided with a case portion is formed with a drawing hole for drawing out the folding frame. The method of claim 6, The case part is made of an upper case portion and a lower case portion integrally covering the upper and lower portions of the outlet hole, Slim type standing auxiliary chair device is formed in the lower case portion receiving groove for receiving the bottom of the folding frame. The method of claim 7, wherein Slim type standing auxiliary chair device that the magnet is mounted on the upper case portion and the chair.

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