JP2005296034A - Stair lift - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for the aged who is variously restricted in a sphere of action by a staircase and difference in level owing to a muscle power decline of the legs to overcome the staircase and the difference in level easily and cheaply. <P>SOLUTION: Even the aged with the muscle power decline can easily go up and down the staircase by having a stick 110 which expands and contracts with motive power and a footstool 120 in combination with the usual handrail. A user operates expansion and contraction switches 150 and 151 in the situation that the user mounts a foot on the footstool, grips an upper part of the stick by one hand and holds the handrail by the other hand so that the user can move the body in vertical directions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention is an elevating device that assists a person to move up and down stairs or steps by having a rod that can be expanded and contracted by power and a footrest.

Elevators with modified homes and elevators with electric chairs with dedicated tracks have been commercialized as devices that make it easy for elderly people to move up and down stairs, but both require modification of the homes and are expensive. Moreover, its use is limited to the place where it is installed. For these reasons, it is difficult to say that it is popular.
JP 11-278772 A "Daido Industrial Product Catalog 2002 Chair Stair Lift" Daido Industry Co., Ltd.

Older people with weak leg strength 1 cannot go upstairs using the stairs 2 In apartments that only have stairs as a facility for ascending and descending, it is necessary to move from the upper floor to the first floor 3 Although it is placed in a difficult situation such as limiting the range of action due to stairs, etc., the means to solve it is expensive and limited, such as an elevator.

By using the present invention having rods (110 and 130) and a footrest (120) that can be expanded and contracted by power in combination with a conventional handrail, it is possible to easily move up and down stairs even for elderly people with weak muscle strength. Conventional devices such as elevators are self-supporting and require a large shape. The present invention, on the other hand, allows the user to balance with handrails, and also uses the ability to walk with his / her feet, and only lacks leg strength for vertical movement. The feature is to complement. The user puts one foot on the footrest of the present invention, grasps the upper portion of the present invention with one hand, holds the handrail with the other hand, and operates the telescopic switch (150 and 151) in this state. It can be moved up and down.

  There is no need for special construction such as installation work, so it can be used easily and easily at any time and anywhere, and steps and steps can be overcome. Since it can be used as a cane on flat ground, there is no burden even if it is carried. In addition, it can be provided at a lower cost than conventional solutions such as elevators.

1 and 2 show the concept of the operation of the lifting device.

The action when going up the stairs with a handrail on the left side in the ascending direction is as follows. 1. With the telescopic part (130) contracted, hold the handrail with the left hand, hold the cane (110) with the right hand, place the right foot on the footrest (120), and put the weight on the right foot. 2. When the extension switch (150) is pressed, the telescopic part (130) comes out of the cane (110) from the cane (110), so that the footrest (120) rises and the whole body rises. 3. When the height of the foot rises to the height of the upper step, step on the left foot and place the weight on the right foot. 4. Lower the right foot from the footrest, lift the cane, and move the grounding section (140) to the upper stage. 5. Pressing the contraction switch (151) pulls the expansion / contraction part (130) into the cane (110). Thereafter, 1 to 5 are repeated. The order of 4 and 5 may be reversed.

The operation when going down the same stairs as above is as follows. 1. With the telescopic part (130) extended, place the grounding part (140) on the lower stage, hold the handrail with the right hand, hold the cane (110) with the left hand, and place the left foot on the footrest (120) , Put your weight on the left foot. 2. When the contraction switch (151) is pressed, the telescopic part (130) is pulled into the cane (110), so that the footrest (120) is lowered and the whole body is lowered. 3. When the telescopic part is completely contracted, put the weight on the right foot. 4. Lower the left foot from the footrest, lift the cane, and move the grounding section (140) to the lower stage. 5. When the extension switch (150) is pressed, the telescopic part (130) comes out of the cane (110) from the cane (110). Thereafter, 1 to 5 are repeated. The order of 4 and 5 may be reversed.

6 to 10 show the mechanical structure of the lifting device. There are two sets of extension switch (150) and contraction switch (151), one on each end of the grip (310) on the top of the cane (110), and the two switches are connected in a seesaw shape and cannot be pressed simultaneously. . Inside the cane (110) are stored a storage battery (320), an electric motor (330), a planetary gear reducer (340), and a trapezoidal screw (360) supported by two upper and lower thrust bearings (350). There is a charging terminal (321) on the surface of the cane (110). The trapezoidal nut (370) at the upper end of the telescopic part (130) meshes with the trapezoidal screw (360) in the cane (110), and moves up and down as the trapezoidal nut (370) rotates. The cross section of the expansion / contraction part (130) has a non-rotating groove (380), which meshes with the vertical convex muscle of the inner surface of the cane (110), so that the expansion / contraction part (130) rotates with respect to the cane (110). To prevent you from doing. The grounding portion (140) at the lower end of the expansion / contraction portion (130) has a T-shape, and one fulcrum rubber (390) is provided at each of the three tips. Accordingly, it is possible to prevent the cane from swinging back and forth and from side to side and the footrest from rotating in the horizontal direction, and to stabilize the footrest on the body.

3 to 5 show a safety device for preventing a user's foot from being caught in the lifting device. The place where the foot (210) is placed is correctly on the footrest (120) as shown in FIG. 5, but if the foot is accidentally placed on the installation part as shown in FIG. As shown in FIG. 4, the foot is sandwiched between the footrest (120) and the grounding portion (140). However, in the present invention, since the footrest has an escape mechanism (220) that slides upward with respect to the cane, the foot is not pinched.

The following forms are possible as another embodiment of the present invention. Instead of sliding on the footrest (120), it can be foldable. The footrest (120) can be enlarged so that both feet can be put on it. The stretchable part (130) and the grounding part (140) can be removed from the cane (110) when being carried. The grip part (310) can improve the feeling when touched using rubber or plastic. Moreover, the shape can be made uneven to make it difficult to slip. The grounding portion (140) can be Y-shaped, square, or triangular in addition to the T-shape. The contact surface between the trapezoidal screw (360) and the trapezoidal nut (370) can be coated to improve slippage or can be provided with a bearing. By installing a charger in a hanger or the like for storing the present invention and connecting it to a household power source, charging can be performed automatically when the present invention is stored.

It is a conceptual diagram of operation | movement of a raising / lowering apparatus, and shows the state which the expansion-contraction part shrunk. It is a conceptual diagram of operation | movement of a raising / lowering apparatus, and shows the state which the expansion-contraction part extended. It is a conceptual diagram of operation | movement of a safety device, and shows the state which put the leg | foot on the wrong position. It is a key map of operation of a safety device, and shows the state where a foot was pinched. It is a conceptual diagram of operation | movement of a safety device, and shows the state which put the leg | foot on the normal position. It is a perspective view which shows the machine structure of a raising / lowering apparatus. It is a side view of the grip part of a raising / lowering apparatus. It is sectional drawing of the cane part containing the expansion-contraction part of a raising / lowering apparatus. It is a top view of the footrest of an raising / lowering apparatus. It is a top view of the installation part of a raising / lowering apparatus.

Explanation of symbols

110 cane, 120 footrest, 130 telescopic part, 140 grounding part, 150 telescopic switch, 151 telescopic switch, 210 foot, 220 escape, 310 grip part, 311 grip part handle, 320 storage battery, 321 charging terminal, 330 electric Motor, 340 planetary gear reducer, 350 thrust bearing, 360 trapezoidal screw, 370 trapezoidal nut, 380 detent, 390 fulcrum rubber

Claims (4)

A cane-like lifting device that has a bar that can be extended and contracted by power and a footrest, and that assists a person to move up and down stairs or steps. 2. The apparatus according to claim 1, wherein the grounding portion has a T-shape and has three fulcrums, thereby preventing the cane from swinging back and forth and from side to side and rotating the footrest in the horizontal direction. Cane-like lifting device characterized by 2. The apparatus according to claim 1, wherein the footrest has a "relief" that is movable upward at a portion where the footrest is attached, thereby preventing a foot from being caught between the footrest and the grounding portion. A cane-like lifting device characterized by having a safety device. 2. The cane-like lifting and lowering device according to claim 1, wherein the footrest is movable upward in a portion where the footrest is attached to the cane, so that a normal walking stick can be used on a flat ground. apparatus.

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