FOLDING STAIR HANDLE FOR THE SOCIALLY DISADVANTAGED

Abstract

The present invention relates to a folding stair handle for the socially disadvantaged, in more detail, a folding stair handle for the socially disadvantaged that includes: a first link assembly installed at a ceiling, under which stairs are positioned, and rotating; a second link assembly spaced apart from the first link assembly in correspondence to the length of the stairs, formed longer than the first link assembly, and rotating; a handle assembly having a first side connected to the first link assembly and a second side connected to the second link assembly, and being folded toward the ceiling or being unfolded toward the stairs in correspondence to rotation of the first link assembly and the second link assembly; and hydraulic pumps connected to first sides of the first link assembly and the second link assembly, respectively, and controlling the first link assembly and the second link assembly.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims under 35 U.S.C. § 119(a) the benefit of Korean Patent Application No. 10-2022-0097199 filed on Aug. 4, 2022, the entire contents of which are incorporated herein by reference.

BACKGROUND

(a) Field of the Invention

The present invention relates to a folding stair handle for the socially disadvantaged, and more particularly, to a folding stair handle for the socially disadvantaged that enables the users to move on wide stairs by folding a handle assembly, which is positioned at the center of the stairs, at a ceiling, and that enables elderly people and children to safely move along the center of stairs by unfolding the handle assembly folded at a ceiling toward the center of the stairs.

(b) Background Art

In general, handles are installed at stairs in buildings to enable users to hold the handles and for the purpose of protection for preventing falling when they move up and down.

Such stair handle is composed of a handrail installed to correspond to the inclination of stairs and vertical pipes vertically installed on the stairs while supporting the handrail.

Vertical pipes are installed to be vertically erect at the centers of landings and stages by putting the lower ends thereof in close contact with the heads of anchor bolts embedded in the stages and the landing of the stairs and partially or entirely welding the outer surfaces of the close contact portions.

However, according to such a method of installing vertical pipes in this way in the related art, there is inconvenience that it is possible to weld vertical pipes to the close contact portions of every anchor bolt.

Further, since the external appearance is deteriorated by the welded portions, there is an uneconomical problem that the welded portions should be finished with protection caps.

Further, since a vertical pipe is installed on the state of every stair, there is a problem that the installation time increases, the work efficiency decreases, and the installation cost also increases.

Further, according to the technique of the related art described above, since vertical pipes are directly welded at the site, there is a problem that work is very difficult and safety accident occurs because welding is performed on narrow stairs.

Recently, handles are installed at both sides and the center of interior stairs such as subway stations.

In particular, when many people move such as in rush hour for which people commute, sections are separated by a handle installed at the center of stairs, so people move slow or have difficulty when moving up and down stairs with large loads.

Further, when there is no handle at the center of stairs, there is a problem that elderly people and children feel inconvenient because they have to move with handles installed at both sides of the stairs in their hands.

PRIOR ART DOCUMENT

Patent Document

• (Patent Document 1) Korean Utility Model No. 20-0436708 (registered on 2007.09.17)

SUMMARY OF THE DISCLOSURE

In order to solve the problems of the related art described above, an objective of the present invention is to provide a new-structure folding stair handle for the socially disadvantaged that enables users to move on wide stairs by folding a handle assembly, which is positioned at the center of the stairs, at a ceiling and that enables elderly people and children to safely move along the center of stairs by unfolding the handle assembly folded at a ceiling toward the center of the stairs.

Further, another objective of the present invention is to provide a folding stair handle for the socially disadvantaged that has been designed to improve convenience of users by pushing or puling first sides of a first link assembly and a second link assembly using hydraulic pumps so that the first link assembly and the second link assembly are rotated and a handle assembly is folded or unfolded.

Further, another objective of the present invention is to provide a folding stair handle for the socially disadvantaged making the second link assembly longer than the first link assembly and positioning a link rotation shaft connected to a second side of the second link assembly in a sliding hole formed at the handle to be able to correspond to the height differences of stairs and the length difference of the second link assembly.

In order to achieve the objectives of the present disclosure, there is provided a folding stair handle for the socially disadvantaged that includes: a first link assembly installed at a ceiling, under which stairs are positioned, and rotating; a second link assembly spaced apart from the first link assembly in correspondence to the length of the stairs, formed longer than the first link assembly, and rotating; a handle assembly having a first side connected to the first link assembly and a second side connected to the second link assembly, and being folded toward the ceiling or being unfolded toward the stairs in correspondence to rotation of the first link assembly and the second link assembly; and hydraulic pumps connected to first sides of the first link assembly and the second link assembly, respectively, and controlling the first link assembly and the second link assembly.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the first link assembly may further include: main frames having a side inserted in holes formed in the ceiling and connected to a rotation holder formed between the holes; and a rotary shaft rotatably coupled to the first side of the handle assembly and connected to second sides of the main frames.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the first link assembly may further include: first spacing portions each extending from the first side of the main frame and having a longitudinal through-hole in which a shaft is rotatably coupled and coupled to the hydraulic pump, and the first sparing portions may serve to enable the main frames to rotate on the rotation holder when the shaft is moved in correspondence to contraction of the hydraulic pump.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the first link assembly may further include supports rotatably coupled to outer surfaces of second sides of the main frames to unfold to a surface of the handle assembly and having an electromagnet therein.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the second link assembly may further include: link frames having a side inserted in holes formed in the ceiling and connected to a link holder formed between the holes; a sliding hole being a through-hole longitudinally formed from the center of the handle assembly toward the second side; and a link rotary shaft positioned in the sliding hole, connected to the second side of the link frames, and straightly reciprocating along the sliding hole in correspondence to rotation of the link frames.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the handle assembly may further include: a main bar formed to have a length corresponding to a length of an upper portion and a lower portion of the stairs; and hand rails connected to first ends of connecting portions extending from both sides of the main bar and longitudinally extending.

In the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, the hydraulic pumps may push the first sides of the first link assembly and the second link assembly, respectively, so that when the first link assembly and the second link assembly are rotated to be vertical from the ceiling, the handle assembly positioned close to the ceiling is spaced from the ceiling and unfolded close to the stairs.

The folding stair handle for the socially disadvantaged according to an embodiment of the present invention has the advantage that it is possible to widely use a space by enabling many people to use wide stairs by folding the handle assembly at a ceiling.

Further, there is the advantage of enabling elderly people and children to safely use stairs along the center by unfolding down the folded handle assembly.

Further, there is the advantage of increasing convenience in used by rotating the first link assembly and the second link assembly such that the handle assembly is easily folded or unfolded by pushing or pulling the first sides of the first link assembly and the second link assembly using hydraulic pumps.

Further, there is the advantage of smoothly folding and unfolding the handle assembly by overcoming the height difference of stairs and the length difference of the second link assembly by making the second link assembly longer than the first link assembly and positioning a link rotation shaft, which straightly reciprocates, in the sliding hole formed at the second side from the center of the handle assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the concept of a folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure;

FIG. 2 is an exemplary view showing the state in which the folding stair handle for the socially disadvantaged according to an embodiment of the present invention has been folded at a ceiling;

FIGS. 3 and 4 are exemplary views showing the state in which the folding stair handle for the socially disadvantaged according to an embodiment of the present invention is unfolded; and

FIG. 5 is an exemplary view showing the concept of rotation of a first link assembly and a second link assembly of the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

Exemplary embodiments that those skilled in the art can easily accomplish are described hereafter in detail with reference to the accompanying drawings. Further, in the following description the operation principle of exemplary embodiments of the present disclosure, when it is determined that detailed description of related well-known functions or configurations may make the spirit of the present invention unclear, they are not described in detail.

Further, parts having similar functions and operations are given the same reference numerals throughout the drawings.

Further, when a portion is “connected” to another portion, it includes not only direct connection, but indirection connection with another component therebetween throughout the specification. Further, unless described otherwise, “including” any components will be understood to imply the including of other components but not the exclusion of any other components.

Hereafter, a folding stair handle for the socially disadvantaged according to an exemplary embodiment of the present invention is described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the concept of a folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure, FIG. 2 is an exemplary view showing the state in which the folding stair handle for the socially disadvantaged according to an embodiment of the present invention has been folded at a ceiling. FIGS. 3 and 4 are exemplary views showing the state in which the folding stair handle for the socially disadvantaged according to an embodiment of the present invention is unfolded, and FIG. 5 is an exemplary view showing the concept of rotation of a first link assembly and a second link assembly of the folding stair handle for the socially disadvantaged according to an embodiment of the present disclosure.

As shown in FIGS. 1 and 2, a folding stair handle 10 for the socially disadvantaged according to an embodiment of the present invention includes a first link assembly 100, a second link assembly 200, a handle assembly 300, and hydraulic pumps 400.

In more detail, as shown in FIGS. 1 and 2, the folding stair handle 10 for the socially disadvantaged according to an embodiment of the present invention includes: a first link assembly 100 installed on a ceiling 12, under which stairs 11 are positioned, and rotating; a second link assembly 200 spaced apart from the first link assembly in correspondence to the length of the stairs, formed longer than the first link assembly, and rotating; a handle assembly 300 having a first side connected to the first link assembly and a second side connected to the second link assembly, and being folded toward the ceiling or being unfolded toward the stairs in correspondence to rotation of the first link assembly and the second link assembly; and hydraulic pumps 400 connected to first sides of the first link assembly and the second link assembly, respectively, and controlling the first link assembly and the second link assembly.

Referring to FIGS. 1 and 2, the first link assembly 100 is installed on the ceiling under which stairs are positioned in an interior and serving to rotate the handle assembly 300.

To this end, the first link assembly 100 further includes main frames 110, a rotation holder 120, and a rotary shaft 130.

The main frames 110 have a side inserted in holes formed in the ceiling 12 and are connected to the rotation holder 120 formed between the holes.

Further, the main frames 110 may be formed as plate-shaped frames spaced apart from each other to face each other at both sides of the outer surface of the handle assembly 300.

The rotation holder 120 is inserted in the holes, which are formed in the ceiling 12 to provide an as large space as possible so that the main frames 110 can rotate, and are rotatably coupled to first sides of the main frames 110.

The rotary shaft 130 is rotatably coupled to the first side of the handle assembly 300 and connected to second sides of the main frames 110.

When the first sides of the main frames 110 are rotated on the rotation holder 120, the rotary shaft 130 correspondingly rotates the first side of the handle assembly 300 connected to the second sides of the main frames 110.

Detailed description for this operation refers to the description of the operation process of the folding stair handle 10 for the socially disadvantaged according to an embodiment of the present invention to be described below.

Meanwhile, as shown in FIGS. 2 and 5, in the folding stair handle 10 for the socially disadvantaged according to an embodiment of the present disclosure, the first link assembly 100 may further include first spacing portions 140 and supports 150.

The first spacer 140 extends from the first side of the main frame 110 and has a longitudinal through-hole, and a shaft is rotatably coupled in the hole, and the hydraulic pump 400 is coupled to the shaft.

The first spacing portions 140 serve to enable the main frames 11 to rotate on the rotation holder 120 when the shaft is moved in correspondence to contraction of the hydraulic pump 400.

Accordingly, a maximum angle at which the main frames 110 can come close to a surface of the ceiling 12 can be formed.

For example, when first sides of the main frames 110 are coupled without the first spacing portions 140 formed at the end of the hydraulic pump 400 and when the hydraulic pump 400 pulls the main frames 110 in a folded state, a problem that the hydraulic pump 400 and the first sides of the main frame 110 can not come close to each other.

Accordingly, rotation is possible only such that the piston of the hydraulic pump 400 and the main frames 110 come close to each other, so the handle assembly 300 can not be folded close to the ceiling.

Referring to FIGS. 3 and 4, the supports 150 are frames that are rotatably coupled to the outer surfaces of the second sides of the main frames 110 to be unfolded to a surface of the handle assembly 300 and have an electromagnet therein.

When the main frames 110 are rotated perpendicular to a surface of the ceiling, the supports 150 are unfolded to the surface of the handle assembly 300 connected to the second sides of the main frames 110, whereby the main frames 110 are vertically firmly positioned.

Further, when the main frames are rotated back toward the ceiling, the magnetism of the electromagnets in the supports 150 is removed.

To this end, it is preferable to form a protrusion 151 on the outer surface of a main bar 310 close to the outer surfaces of the main frames 110 in order to prevent the supports 150 from coming close to the main frames 110 when the main frames 110 are rotated to be vertical from the ceiling.

Referring to FIGS. 1 to 4, the second link assembly 200 is spaced apart from the first link assembly 100 in correspondence to the length of the stairs 11, is formed longer than the first link assembly 100, and rotates.

To this end, the second link assembly 200 further includes link frames 210, a sliding hole 230, and a link rotary shaft 240.

The link frames 210 have first sides inserted in holes formed in the ceiling and are connected to a link holder 220 formed between the holes.

The link frames 210 are connected to the second side of the handle assembly 300 and rotate in correspondence to rotation of the main frames 110, thereby maintaining the level of the handle assembly 300 to be close to or spaced from the ceiling.

In this configuration, the holes are formed in the ceiling 12 and spaced apart from the first link assembly 100.

The link holder 220 has the same function as the rotation holder 120, so it is not described in detail.

Referring to FIGS. 2 to 4, the sliding hole 230 is a through-hole longitudinally formed from the center of the handle assembly 300 toward the second side.

The sliding hole 230 forms a gap at the second side of the link frame 210 due to rotation of the link frames 210, whereby the handle assembly 300 can be maintained at a predetermined angle and can be formed toward and unfolded away from the ceiling 12.

The link rotary shaft 240 is a shaft that is positioned in the sliding hole 230, is connected to the second side of the link frames 210, and straightly reciprocates along the sliding hole 230 in correspondence to rotation of the link frames 210.

In particular, since the second sides of the link frames 210 are coupled to the handle assembly 300 positioned at the lower portion of the stairs, when the first sides of the link frames 210 are rotted on the link holder 220, rotation is possible only when the second sides of the link frames 210 and the second side of the handle assembly 300 come close to each other.

This is because the link frames 210 should also be rotated simultaneously when the main frames 110 connected to the first side of the handle assembly 300 are rotated.

Accordingly, the link rotation shaft 240 positioned in the sliding hole 230 adjusts a distance by straightly reciprocating so that the second sides of the link frames 21 and the second side of the handle assembly 300 come close to each other.

Meanwhile, as shown in FIGS. 1 and 5, in the folding stair handle 10 for the socially disadvantaged according to an embodiment of the present disclosure, the second link assembly 200 may further include second spacing portions 250.

The second spacing portions 250 are formed at the first sides of the link frames 210 and have the same function as the first spacing portions 140.

Referring to FIG. 1, the first side of the handle assembly 300 is connected to the first link assembly 100 and the second side is connected to the second link assembly 200, whereby the handle assembly is used as a handle that is folded toward the ceiling 12 or unfolded toward the stairs 11 in correspondence to rotation of the first link assembly 100 and the second link assembly 200.

The handle assembly 300 further includes a main bar 310 and hand rails 320.

The main bar 310 is formed to have a length corresponding to the length of the upper portion and the lower portion of the stairs 11. The first link assembly 100 and the second link assembly 200 are rotatably coupled to both sides of the main bar, respectively.

The hand rails 320, which are bars that are connected to first ends of connecting portions extending from both sides of the main bar 310 and longitudinally extend, enable elderly people and children to move on the stairs 11 with the hand rails in their hands.

It is preferable that the handle assembly 300 is formed in a folding type to satisfy both of opposite conditions when many people are allowed to move by widely using stairs or when elderly people or children move along the center of stairs.

Referring to FIGS. 4 and 5, the hydraulic pumps 400 are connected to the first sides of the first link assembly 100 and the second link assembly 200, respectively, and serve to control the first link assembly 100 and the second link assembly 200.

In particular, the hydraulic pumps 400 push the first sides of the first link assembly 100 and the second link assembly 200, respectively, so that when the first link assembly 100 and the second link assembly 200 are rotated to be vertical from the ceiling 12, the handle assembly 300 positioned close to the ceiling 12 is spaced from the ceiling 12 and unfolded close to the stairs 11.

Further, it is preferable to provide a switch or a lever around each of the upper portion and the lower portion of the stairs 11 so that the hydraulic pumps 400 can be driven by operating the switches or the levers.

Hereafter, the operation process of the folding stair handle 10 for the socially disadvantaged according to an embodiment of the present invention by the components is described.

As shown in FIG. 2, the handle assembly 300 is positioned in a folded state at the ceiling 12 without a handle installed at the stairs 11.

Accordingly, many people can move in commute time with only handles, which are usually installed at both sides of stairs, installed and without a handle at the center of the stairs.

Further, when elderly people or children unavoidably use the center of the stairs, the hydraulic pumps 400 installed in the ceiling are driven by operating switches or levers positioned around the upper portion and the lower portion of the stairs, respectively.

In this case, it is informed that the folded handle assembly 300 moved down toward the centers while unfolding by making an alarm around.

Next, as shown in FIGS. 3 and 5, the pistons of the hydraulic pumps 400 are stretched, thereby pushing the first sides of the main frames 110 and the first sides of the link frames 210. Accordingly, the main frames 110 are rotated on the rotation holder 120 and the link frames 210 are rotated on the link holder 220, whereby the handle assembly 300 positioned close to a surface of the ceiling 12 is spaced from the ceiling.

Next, the second sides of the main frames 110 are rotated on the rotary shaft 130 rotatably connected to the first side of the handle assembly 300.

Further, the second sides of the link frames 210 are rotated on the link rotary shaft 240 rotatably connected to the second side of the handle assembly 300.

In particular, the link rotary shaft 240 positioned in the sliding hole 230 formed in the main bar 310 constituting the handle assembly 230 is straightly moved from the center of the main bar 310 to the second side of the main bar 310, whereby the second sides of the link frames 210 maintain an angle corresponding to the height difference of the upper portion and the lower portion of the stairs.

Accordingly, the main bar 310 comes close to the stairs 11 while unfolding from the ceiling 12 with the level at a predetermined angle.

Next, as shown in FIG. 4, when the main frames 110 and the link frames 210 finish being rotated to be vertical from the ceiling 12, the hydraulic pumps 400 stop pushing, whereby the handle assembly 300 can be firmly positioned at a predetermined distance from the surface of the stairs 11.

In this case, the supports 15 positioned on the outer surfaces of the second sides of the main frames 110 are rotated to the first side of the main bar 310 by the gravity in correspondence to rotation of the main frames 110.

When the hydraulic pumps 400 stop operation with the ends of the supports 140 in contact with the outer surface of the first side of the main bar 310, the magnetism of the electromagnets in the supports 150 is generated, thereby firmly restricting rotation of the main frames 110.

To this end, it is preferable to form a hole with a predetermined depth at the portions that the ends of the supports 150 come in contact with by magnetism.

In this way, when elderly people or children move up or down the stairs with the hand rails 320 in their hands, rotation of the main frames 110 is stopped, so they can safely move.

Further, since rotation of the main frames 110 is restricted, the link frames 210 are also not rotated even without forming specific supports 150 on the link frames 210.

In this case, it is apparent that supports 150 are formed at the second sides of the link frames 210 to further firmly position the handle assembly.

Although preferred embodiments of the present invention were described above in the detailed description of the present disclosure, they exemplarily provide the best embodiments of the present invention without limiting the present disclosure. Further, it is apparent that those skilled in the art can modify and copy the present invention in various ways without departing from the spirit of the present disclosure.

Accordingly, the range of the right of the present invention is not limited to the embodiments described above and may be implemented in various types of embodiments within the following claims. Further, it should be noted that even various changeable ranges by those skilled in the art are included in the range of the claims without departing from the spirit of the present invention determined by the claims.

Claims

1. A folding stair handle for the socially disadvantaged, comprising:

a first link assembly installed at a ceiling, under which stairs are positioned, and rotating;

a second link assembly spaced apart from the first link assembly in correspondence to the length of the stairs, formed longer than the first link assembly, and rotating;

a handle assembly having a first side connected to the first link assembly and a second side connected to the second link assembly, and being folded toward the ceiling or being unfolded toward the stairs in correspondence to rotation of the first link assembly and the second link assembly; and

hydraulic pumps connected to first sides of the first link assembly and the second link assembly, respectively, and controlling the first link assembly and the second link assembly,

wherein the first link assembly further includes:

main frames having a side inserted in holes formed in the ceiling and connected to a rotation holder formed between the holes; and

a rotary shaft rotatably coupled to the first side of the handle assembly and connected to second sides of the main frames, and

the first link assembly further includes supports rotatably coupled to outer surfaces of second sides of the main frames to unfold to a surface of the handle assembly and firmly come in close contact with the surface of the handle assembly by magnetism, which is generated when power is applied to electromagnets disposed therein, thereby firmly vertically positioning the main frames.

2. The folding stair handle of claim 1, wherein the first link further includes first spacing portions each extending from the first side of the main frame and having a longitudinal through-hole in which a shaft is rotatably coupled and coupled to the hydraulic pump, and

the first sparing portions serve to enable the main frames to rotate on the rotation holder when the shaft is moved in correspondence to contraction of the hydraulic pump.

3. The folding stair handle of claim 1, wherein the second link assembly further includes:

link frames having a side inserted in holes formed in the ceiling and connected to a link holder formed between the holes;

to a sliding hole being a through-hole longitudinally formed from the center of the handle assembly toward the second side; and

a link rotary shaft positioned in the sliding hole, connected to the second side of the link frames, and straightly reciprocating along the sliding hole in correspondence to rotation of the link frames.

4. The folding stair handle of claim 1, wherein the handle assembly further includes:

a main bar formed to have a length corresponding to a length of an upper portion and a lower portion of the stairs; and

hand rails connected to first ends of connecting portions extending from both sides of the main bar and longitudinally extending.

5. The folding stair handle of claim 1, wherein the hydraulic pumps push the first sides of the first link assembly and the second link assembly, respectively, so that when the first link assembly and the second link assembly are rotated to be vertical from the ceiling, the handle assembly positioned close to the ceiling is spaced from the ceiling and unfolded close to the stairs.