KR20200055977A - Convertible apparatus of stairs and slope way - Google Patents

Abstract

Disclosed is an apparatus for varying slopes and stairs. According to the present invention, the apparatus for varying slopes and stairs comprises: a support frame corresponding to an inclined floor surface; a plurality of conversion plates installed on the support frame to be long to the sides along an inclined surface as many as the number of the stairs; a first upper support member and a second upper support member, which are formed to protrude upwards from both sides of the support frame corresponding to each conversion plate; a following shaft which is installed on an upper side of the first upper support member; a rotary shaft which is installed on an upper side of the second upper support member; a following gear which is fixed and installed on the following shaft; a connection chain which connects the following shaft; a driven gear which is fixed and installed on one end of the driven shaft provided on one of the plurality of conversion plates; a driving gear which is connected to the driven gear by a driving chain; and a motor which drives the driving gear. The apparatus for varying slopes and stairs can have high efficiency in use.

Description

Variable device for ramps and stairs {CONVERTIBLE APPARATUS OF STAIRS AND SLOPE WAY}

The present invention relates to a ramp and stair variable device, and more particularly, to a ramp and stair variable device that can be converted into a slope with a stable inclination angle.

In general, a wheelchair is a chair having wheels on both sides so that a person who is inconvenient to move or has a poor lower body function can move while sitting, and helps to move to a desired place without the help of others.

Conventional wheelchairs, which are commonly used, are easy to move on flat lands and ramps, but have a problem that access to a place where stairs are installed is restricted because driving is impossible in an environment that cannot be moved by wheels such as stairs. Therefore, by converting the stairs to a ramp to use the wheelchair on the stairs, a ramp converting stairs developed to facilitate the wheelchair to move the stairs has been developed.

As described above, Korean Patent Registration No. 10-1470226 discloses a conventional technique related to a ramp converting stairs that can be used by converting a stairs into a ramp.

However, the conventional ramp converting stairs are configured such that ramps are formed while maintaining the inclination angles of the stairs, and thus, since the ramps are formed at high inclination angles, it is difficult for wheelchair users to move themselves.

In addition, a wheelchair moving on a slope having an inclined angle that is not stable has a problem that human injury occurs by being overturned.

On the other hand, the conventional ramp converting stairs are configured to be used by converting the stairs into ramps after the user reaches the stairs, and the wheelchair user has the inconvenience of waiting while the stairs are converted into ramps, thus reducing the efficiency of use.

1. Republic of Korea Patent Publication No. 10-2011-0015281 (2011.02.15) 2. Republic of Korea Patent Publication No. 10-2007-0098979 (2007.10.08)

It is an object of the present invention to provide a ramp and a staircase variable device that can be converted into a ramp having a stable inclination angle and have high use efficiency as being devised to solve the above problems.

In order to achieve the above object, the ramp and stairs variable device according to the present invention,

A support frame corresponding to the inclined bottom surface; A conversion plate installed on the support frame to the left and right, and installed in plurality along the inclined surface by the number of steps; A first upper support member and a second upper support member formed to protrude upward from both sides of the support frame corresponding to each conversion plate; A driven shaft installed on an upper portion of the first upper support member; A rotating shaft installed on an upper portion of the second upper supporting member; A driven gear fixedly installed on the driven shaft; A connecting chain connecting the driven shaft; A driven gear fixed to one end of a driven shaft provided in any one of the plurality of conversion plates; A drive gear connected to the driven gear by a drive chain; And a motor that drives the driving gear.

It is characterized in that a driven gear is installed in each of the driven shafts respectively installed in the plurality of conversion plates, and the driven gears are rotatably connected by a connection chain.

It is characterized in that one side of the conversion plate is formed in a step shape, and the other side of the conversion plate is formed in an inclined surface shape.

An arc-shaped stop piece is integrally formed on an upper side of the second upper support member, and a wedge protrudes in a circumferential direction on a part of the rotation shaft,

It characterized in that the rotating shaft is rotatably interviewed and mounted on the circular arc surface of the arc-shaped stop piece.

The lower portion of the support frame is characterized in that it further comprises a lifting cylinder capable of moving the support frame and the converting plates up and down.

According to the present invention, it is possible to convert to a ramp having a stable inclination angle by the rotational motion of each step plate, so that users can conveniently convert and use it as a stair or ramp.

1 is a right perspective view of a ramp and staircase variable device according to the present invention.
2 is a left perspective view of a variable ramp and staircase according to the present invention.
3 is a left sectional view of FIG. 1.
4 is a perspective view showing a state in which a ramp and a stair variable device according to the present invention are converted to a ramp.
5 is a left sectional view of FIG. 4.
6 is a front view of FIG. 4.
7 and 8 are views showing an operation of converting a ramp from a stair to a ramp in a ramp and stair variable device according to the present invention.

Hereinafter, the ramp and the staircase variable device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a right perspective view of a ramp and stair variable device according to the present invention, FIG. 2 is a left perspective view of a ramp and stair variable device according to the present invention, FIG. 3 is a left sectional view of FIG. 1, and FIG. 4 is the present invention 5 is a perspective view showing a state in which a variable ramp and a staircase variable device are converted to a ramp, and FIG. 5 is a left sectional view of FIG. 4 and FIG. 6 is a front view of FIG. 4.

1 to 6, the ramp and stair variable device 1 according to the present invention includes a support frame corresponding to an inclined floor surface. The support frame is composed of a plurality of support frames that horizontally connect the pair of support frames (3,3 ') and the pair of support frames (3,3') extending vertically along the inclined direction.

On the support frames 3 and 3 ', a conversion plate 10 is installed to the left and right. A plurality of conversion plates 10 may be installed along an inclined surface as many as the number of steps, and the plurality of conversion plates 10 may be separately rotated and rotated simultaneously in one operation. The conversion plate 10 has one side portion formed in a step shape, and the other side portion formed in an inclined surface shape.

The first upper support member 5 and the second upper support member 7 are formed to protrude upward on both sides of the support frames 3 and 3 'corresponding to each conversion plate 10, and the first A driven shaft 31 is installed on the upper portion of the upper support member 5, and a rotating shaft 41 is installed on the upper portion of the second upper support member 7.

At this time, an arc-shaped stop piece 8 is integrally formed on an upper side of the second upper support member 7, and a wedge 43 formed by protruding in a circumferential direction is provided in a part of the rotation shaft 41. It is. While the rotating shaft 41 is interviewed on the circular arc surface of the arc-shaped stop piece 8, the rotating shaft 41 can rotate along the stop piece 8.

When the rotating shaft 41 rotates on the stop piece 8, the rotation range may be limited by the wedge 43, through which the rotation of the conversion plates 10 can be stopped at an optimal position. It is.

A driven gear 33 is fixed to the driven shaft 31. In addition, driven gears 33 are installed on all driven shafts 31 respectively installed on the plurality of conversion plates 10, and the driven gears 33 are rotatably connected by a connecting chain 35. . Accordingly, the driven gears 33 of the driven shafts 31 can be rotated at the same time in accordance with the rotation of the connecting chain 35.

In addition, a driven gear 23 is fixed to one end of the driven shaft 31 provided in any one of the plurality of conversion plates 10. The driven gear 23 is connected to the driving gear 21 by a driving chain 25, and a motor 20 for driving the driving gear 21 may be installed on one side.

Therefore, the driving force of the motor 20 is transmitted to the driven gear 23 by the driving gear 21 and the driving chain 25, and the driven shaft 23 rotates and the driven shaft 31 and the driven gear ( 33) will rotate. Then, all the driven gears 33 are rotated by the connection chain 35, and accordingly, the driven shafts 31 are rotated, so that the plurality of conversion plates 10 can be rotated.

In addition, a lifting cylinder 50 capable of moving the support frames 3 and 3 'and the converting plates 10 up and down may be installed below the support frames 3 and 3'. Since the lifting cylinder 50 may be a hydraulic cylinder, and cannot be rotated in place when converting the converting plates 10 to a stairway or a ramp, it is lifted upward to convert and after conversion, it is returned to its original position. Is to function.

At this time, a plurality of lifting cylinders 50 may be installed according to the number of conversion plates (10).

Hereinafter, the operation of the variable ramp and staircase according to the present invention will be described in detail.

Fig. 7 (a) is a diagram showing the use of the stairs. In this state, when the user wants to change to a ramp, when the user presses a button (not shown), the lifting cylinder 50 first operates to lift the support frames 3 and 3 'upward.

In this state, while the motor 20 is driven, the driving gear 21 is rotated, and the driven shaft 31 is rotated by the driving chain 25 and the driven gear 23. As the driven gear 33 rotates according to the rotation of the driven shaft 31, the connecting chain 35 is rotated, and all driven shafts 31 connected thereto are rotated.

Therefore, all the converting plates 10 to which the driven shafts 31 are combined are rotated to make a ramp (see FIGS. 7 (b) and 8 (a)). At this time, the rotating shaft 41 formed on the upper portion of the second upper support member 7 rotates, and the wedge 43 is caught by the stopper 8 to stop, thereby making it possible to create an optimal ramp position.

Lastly, when the ramp is completed, the lifting cylinder 50 is operated to lower the support frames 3 and 3 'downward, thereby completing the ramp (see FIG. 8 (d)).

On the other hand, in order to convert the shape from a ramp to a staircase, the above operation may be driven in the reverse direction.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: Variable ramp and stairs 3,3 ': Support frame
5: first upper support member 7: second upper support member
8: Stop 10: Conversion
20: motor 21: drive gear
23: driven gear 25: drive chain
31: driven shaft 33: driven gear
35: connection chain 41: rotating shaft
43: wedge 50: lifting cylinder

Claims (5)

A support frame corresponding to the inclined bottom surface;
A conversion plate installed on the support frame to the left and right, and installed in plurality along the inclined surface by the number of steps;
A first upper support member and a second upper support member formed to protrude upward from both sides of the support frame corresponding to each conversion plate;
A driven shaft installed on an upper portion of the first upper support member;
A rotating shaft installed on an upper portion of the second upper supporting member;
A driven gear fixedly installed on the driven shaft;
A connecting chain connecting the driven shaft;
A driven gear fixed to one end of a driven shaft provided in any one of the plurality of conversion plates;
A drive gear connected to the driven gear by a drive chain; And
And a motor for driving the driving gear. According to claim 1,
A variable ramp and stairway variable device, wherein driven gears are installed on all driven shafts respectively installed on the plurality of conversion plates, and the driven gears are rotatably connected by a connecting chain. According to claim 1,
One side portion of the conversion plate is formed in a staircase shape, the other side of the opposite side is a ramp and stairway variable device, characterized in that formed in the shape of a slope. According to claim 1,
An arc-shaped stop piece is integrally formed on an upper side of the second upper supporting member, and a wedge protrudes in a circumferential direction on a part of the rotation shaft,
A variable ramp and staircase characterized in that the rotating shaft is rotatably interviewed and mounted on an arc surface of the arc-shaped stop piece. The method according to any one of claims 1 and 4,
The lower part of the support frame further comprises a lifting cylinder capable of elevating the support frame and the converting plates up and down.

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