JPH07315723A - Stairs elevating device - Google Patents

Abstract

PURPOSE:To provide a stairs elevating/sinking device which is installed in the stair part between the first and second floors and presents safety and convenience. CONSTITUTION:One or two threaded shafts 10 are supported in two places near the top and bottom of stairs having a gradient the same as or similar to that of the stairs and either of the threaded shaft(s) and female threaded piece fitted on them is rotated by a motor 40 through a sprocket and chain, and thereby the female threaded piece is moved in the axial direction of the shafts. A plurality of rollers 7, 8 and roller guide rails 11 are furnished for elevating and sinking a stepboard 1 for person to go up the stairs having a horizontal part coupled with the female threaded piece along the slope and supporting the weights of the elevator device moving part and the person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device installed on stairs of a general house or a small office.

[0002]

2. Description of the Prior Art Stairs are commonly used as a means for people to move between upper and lower floors in a residence or small office.

An elevator is an example of a lifting device driven by power.

There are some cases where lifters are partially used for medical purposes.

[0005]

However, in the first method described above, the labor is required to move up and down the stairs, and it is difficult for the elderly and the sick to move up and down, so the second floor is the first floor. Not as effectively used. Also, in urban areas, the rooms on the second floor are often exposed to sunlight, but the first floor is not exposed to sunlight due to restrictions on the living environment. However, the fact that it is inconvenient to go up and down the stairs makes it difficult to use the second floor.

The elevator of the second method is expensive to install, requires a large area for the stairs and the elevator, and is difficult to modify for additional installation, and the elevator is a closed space. Therefore, it is not popular because of the possibility of being trapped inside the room at the time of failure and having psychological resistance.

[0007] The medical lifter of the third method has a range of use because it requires safety confirmation by a caregiver, requires a large space for installation, and is not constructed so that anyone can use it conveniently. Is limited. In view of such conventional problems, an object of the present invention is to provide a safe and inexpensive lifting device for stairs in order to increase the utility value of the second floor and realize a convenient and comfortable living life in the aging society. To do.

[0008]

In order to achieve the above object, in the stair climbing device according to the present invention, the stair climbing device can be installed in a stair space and driven by a motor to climb the stairs without human power. . In the stair climbing device of the present invention, it is of course possible to automatically climb the stairs, but since the function as a stair is left as it is, it can be used automatically or manually depending on preference.

[0009]

Since the stair climbing device according to the present invention is installed in the stair space, the device itself is less expensive than the elevator itself. Moreover, since the installation space is not taken, the land can be effectively used, and thus the building can be efficiently and inexpensively built. Furthermore, since the usage status can be seen from the outside, there is no need to worry about being locked in a closed room like an elevator.

If a safety fence is attached to the elevator and stopped at the stairs downstairs on the second floor, it is possible to prevent an infant from crawling and falling from the stairs.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. First, a method of using the stair climbing device will be described. When using the stairs as a normal staircase, place the lifting device on the first floor as shown in Fig. 3 and keep the safety arm 15 and the safety foot cover 14-1 out of the way so as not to hinder the passage of people. . In this state, the lifting device cannot be operated. When using the lifting device, ride on the step of the lifting device as shown in Fig. 4 so that your feet do not stick out, and tilt the safety arm 15 for fall prevention by hand to make it horizontal (also referred to as lowering) so that your foot is caught. Safety foot cover 14
-1 comes up. After confirming that the green lamp that indicates the completion of preparation is lit, hold the safety arm with one hand to support the body and press the lifting device lifting push button, the lifting device moves up and automatically stops on the second floor. When you reach the 2nd floor, raise the safety arm by hand as shown in Fig. 3 and make sure that the safety foot cover is lowered by the movement, and go down to the 2nd floor from the step. When using the device to get down from the second floor, ride on the step of the lifting device and lower the safety arm for fall prevention by hand, and the movement will raise the safety foot cover to prevent your foot being caught. After confirming that the green lamp indicating the completion of preparation is lit, hold the safety arm with one hand to support the body and press the lifting device lowering push button, the lifting device descends and automatically stops on the first floor. When you arrive on the first floor, raise the safety arm by hand as shown in Fig. 3 and make sure that the safety foot cover is lowered by the movement, and go down from the step to the floor on the first floor. If you keep the safety arm of the lifting device down, you can operate the lifting device even when no one is riding on it, so if you are on the second floor, stairs are on the first floor, if you are on the first floor, you are on the second floor. The lifting device can be called by pressing a call button nearby.

FIG. 1 is a perspective view for explaining a screw shaft drive type stair climbing device. In FIG. 1, F1 indicates the floor of the first floor, S1 indicates the first staircase, and S2 indicates the second staircase. Reference numeral 1 denotes a stepped portion of the stair climbing device on which a person rides, on which four pillars 2 stand. Figure 3 on top of the pillar
A safety arm 15 shown in is attached. Reference numeral 3 is a link connected to the safety arm 15, and the movement of this link causes the safety foot cover 14-1 and 14-2 in FIG.
Moves up and down. Reference numeral 4 is a base plate attached to both side surfaces of the step, and female screws 9 for transmitting a driving force for raising and lowering the step to the base plate and rollers 6, 7 for supporting the weight of the device and the occupant.
The plate 5 to which 8 is fixed is fixed. Reference numeral 10 is a screw shaft for raising and lowering the step. Reference numeral 11 is a guide rail for the rollers 6, 7, and 8, and 12 is a support member that supports the guide rail from the building portion. Reference numeral 20 is a motor that raises and lowers the stair climbing device by this rotation. Reference numeral 21 is a torque limiter, which stops the operation of the apparatus when the load becomes excessive. The driving force of the motor is transmitted to the sprocket 24 fixed to the screw shaft via the sprocket 22 and the chain 23 to raise and lower the step. Reference numerals 26 and 28 denote sprockets fixed to the screw shaft, and the chain 27 transmits the driving force of the motor to the other screw shaft. Reference numeral 32 is a sprocket for a tensioner of the chain, and 33 is a mounting base.
These parts are omitted in the case of a single screw shaft drive. Reference numeral 25 is a divided shaft for improving the assemblability.
It is integrated with 0 and the flange 31. Reference numerals 29 and 30
Is a support stand with bearings that supports the screw shaft.
Reference numeral 34 is a motor mounting base, 35 is a base plate, and 36 is a control panel.

FIG. 2 is a sectional view of the step portion of the screw shaft drive type stair climbing device as viewed from the side. Reference numeral 1 indicates a step for passengers, and the shape on the side of the stair step plate is a slope so as not to interfere with the stairs when the elevating device moves along the stairs.
The gap is taken. The screw shaft of reference numeral 10 uses a square screw or a trapezoidal screw shaft and is arranged in the vicinity of the stairs. Reference numeral 9 is a female screw fed by a screw shaft 10 and is fastened to the step 1 via the plate 5 and the plate 4. The rollers 6, 7 and 8 are fixed to the step 1 via a plate, and are caught in a roller guide rail fixed to the side surface of the stairs to support the load of the elevating part of the elevating device. Reference numeral 14
-1 is for preventing the foot from slipping off the step,
Reference numeral 14-2 is a safety foot cover for preventing a foot from being caught between the staircase step and the lifting device step. A feature of the screw shaft drive type stair climbing device is that the drive unit is divided from the step, so that the step can be made compact. On the other hand, since the inertial mass becomes large, it is necessary to suppress the lifting speed.

FIG. 3 is a perspective view showing a state in which the stair climbing device is not used. In this state, the safety arm 15 is raised and the safety foot cover 14-1 is lowered via the safety arms 15 and 3-2, so that the stairs can be used as stairs. Reference numeral 70 designates a sprocket for an equalizer that allows both safety arms to move even if one of the two sets of left and right safety arms is operated up and down,
71 is a chain.

FIG. 4 is a perspective view showing a state in which the stair climbing device is used. In this state, the safety arm 15 is lowered and the safety foot covers 14-1 and 14-2 are raised to ensure the safety of passengers.

FIG. 5 is an explanatory view for explaining a female screw drive type stair climbing device of the present invention. In FIG. 5, F1 is the floor of the first floor, F2 is the floor of the second floor, S1 is the first step of the stairs, S2 is the second step of the stairs, and S is the staircase and the stair climbing device is one unit. The main frame of the stairs is shown. The screw shaft 10 includes screw shaft support stands 10-4 and 10-5, each of which has a bearing 10-3 built in at both ends thereof.
It is fixed to. Further, the roller guide rails 11 are provided at appropriate intervals with the support members 12-1, 12-2, 12-3, 12.
It is fixed to the main frame S by -4. The elevating device stair unit is fixed to the building foundation or the building structural material with bolts 16-3 and 16-4 by the leg portions 16-1 and 16-2 at both ends. Reference symbol M indicates an occupant of the stair climbing device. Reference numeral 1 is a step of the stair climbing device, on which four columns 2 stand. A safety arm 15 is attached to the top of the pillar. Reference numeral 3 is a link connected to the safety arm 15 and the movement of this link causes the safety foot cover 14
-1 and 14-2 move up and down. Reference numeral 4 is a base plate attached to both sides of the step, and a female screw housing for transmitting the driving force for raising and lowering the step to the step plate and rollers 6, 7, 8 for supporting the weight of the passenger and the device are fixed directly or via plates or the like. Has been done. Reference numeral 10 indicates a screw shaft that is fixed at both ends, and the stepper built-in motor 4 is attached to this screw shaft.
The female screw driven by 0 (reference numeral 50 in FIG. 7) is engaged.

FIG. 6 is an explanatory view for explaining a required space of the step portion of the stair climbing device. In FIG. 6, reference numeral 1a indicates a step with a height of one stair. In this case, since the drive motor is arranged in a small space, a part of the motor may be more convex than the step surface as shown in FIG. 8, but this problem can be avoided by suppressing the ascending / descending speed and reducing the size of the motor. Reference numeral 1b indicates a step pedestal having a height of two steps. 1d shows the auxiliary stairs attached to the step of the lifting device. Reference numeral 1c indicates a step pedestal having a height of two stairs with a large step surface. Reference numeral 1e indicates an auxiliary stair attached to the step of the lifting device. Reference numerals 40-3 and 40-4 denote drive motors 43 and 4, respectively.
Reference numeral 5 indicates a drive sprocket.

FIG. 7 is an explanatory view for explaining a female screw drive portion of a female screw drive type stair climbing device. In FIG. 7, reference numeral 1 is a main body frame (also referred to as a step) of the lifting device step. Reference numeral 40 is a drive motor for rotating a sprocket 43 fixed to a female screw 50 with a key 44 via a sprocket 41 and a chain 42. The female screw 50 meshes with the fixed screw shaft 10 and is held by a female screw housing (also referred to as a housing) 54 via bearings 51 and 52. Therefore, when the female screw 50 rotates, the housing 54 moves in the screw shaft length direction. To do. Since the housing 54 is fastened to the step 1 with the stopper 65, the step 1 can be moved up and down by the drive motor. Roller 6,
7 and 8 are fixed to the step 1 with stoppers 66 and 67,
Since the rollers are arranged in the roller guide rails 11, the rollers can support the weight of the step and the load of the occupant and can be smoothly moved up and down. In the case of the two screw shaft system, the other female screw is rotated by the sprocket 45 and the chain 46.

8 to 10 are explanatory views for explaining the motor arrangement and drive system inside the step body frame (step) 1. FIG. 8 shows a layout when the height of the step is small. Reference numeral 1 is a step body frame, 10 is a screw shaft, and 5
4 is a female screw housing, 40-1, 40-2 are motors, 41, 43, 45, 45-2 are sprockets, 4
Reference numerals 2 and 46 are chains, and 59 is a chain tensioner. FIG. 9 shows a layout in which the motor is placed horizontally and the step height is made as low as possible. Reference numeral 1 is a step body frame, 10 is a screw shaft, 54 is a female screw housing, 40 is a motor, 41-2 and 41-3 are bevel gears, 41-4,
41-5 is a holder, 41, 43 and 45 are sprockets, 42 and 46 are chains, and 59 is a chain tensioner. FIG. 10 shows a layout when the step height is set to allow for two stairs. Reference numeral 1 is a step body frame, 10 is a screw shaft, 54 is a female screw housing, 40
Is a motor, 41, 43, 45 are sprockets, 42,
46 is a chain and 59 is a chain tensioner.

11 to 13 are sectional views for explaining the structure of the female screw rotating portion. FIG. 11 shows a female screw rotating portion for heavy load, FIG. 12 shows a female screw rotating portion for medium load, and FIG. 13 shows a sectional view of a female screw for light load. Reference numeral 1 in FIG.
Indicates a step body frame. Reference numeral 42 is a chain driven by the motor 40 shown in FIG. 7 and transmits the force of the motor to the sprocket 43. Since the sprocket 43 is fixed to the female screw 50 with the key 44, the female screw is rotated. The female screw 50 is surrounded by the bearings 51 and 52 in the housing 54 that is fastened to the step 1.
When is rotated, since the screw shaft 10 is fixed, the step 1 moves in the length direction of the screw shaft. Reference numeral 55 is an O-ring, 56 is a distance collar, 57 is a ratchet for a fall prevention device, 5
8 is a nut. Reference numeral 45 is a sprocket, and 46 is a chain for driving another female screw. Reference numeral 65 is a bolt for fastening the housing 54 to the step 1, and 65-2 is a positioning knock pin.

FIG. 14 is an explanatory view for explaining that the connection between the step 1 and the housing 54 has a flexible mounting structure.
In FIG. 14, reference numeral 1 is a step, 54 is a housing, and 52 is a housing.
Is a bearing, 50 is a female screw, and 10 is a screw shaft. The housing 54 is a positioning knock pin 65-2 in FIG.
Is positioned on the pedestal 1, and is fastened with bolts 65 with a bush 65-3 made of an elastic material such as rubber or resin sandwiched therebetween. With this structure, the step 1 and the housing 54 can move flexibly within a certain range, so that the alignment accuracy of the screw shaft, the bending of each part due to the occupant's load, and the dimensional tolerance of the screw shaft and the female screw can be allowed more widely, and the operation can be performed. Since it is possible to reduce the impact at the time of stop, it is possible to manufacture a stair climbing device with low manufacturing cost and high performance.

FIG. 15 is a sectional view seen from the front for explaining the movement of the safety arm and the safety foot cover, and FIG. 16 is a sectional view from the side. In FIG. 15, reference numeral 15 is a safety arm,
15-2 is a soft pad for a safety arm, which rotates 90 ° about the upper cylindrical portion 2-2 (FIG. 16) of the column 2. The limit switch 79 (LS1) is interlocked to prevent the lifting device from operating when the safety arm is facing upward. At this time, you can use the stairs normally. When the vehicle is in the horizontal position, the occupant is prevented from falling and the elevator can be operated. At this time, the stairs cannot be manually lifted. The purpose of the safety arm is to physically separate the use of the lifting device from the use of the stairs by providing the safety arm and to prevent the occupant from falling while the lifting device is in operation. It goes without saying that another structure may be used (for example, the safety arm is not a double-open type but a single-open type, and the safety arm is raised and leveled instead of lowered and leveled). Reference numerals 14-1 and 14-2 are safety foot covers for ensuring foot safety. When the safety arm 15 is tilted to the horizontal position, the arm 3-3 fixed to the safety arm 15 rotates, and the link 3-2 and the safety foot cover lifting rod 3-1 are lifted, so the safety foot covers 14-1 and 14 are provided. -2
Rises. Although the safety foot cover is directly connected to the safety arm in this figure, the safety foot cover may be automatically raised by the operation of the safety arm, and thus another method such as raising it by a small motor may be used. Further, the safety foot cover 14-1 may be omitted when the front and rear width of the step is short. Reference numerals 70 to 78 are equalizer parts on the left and right of the safety arm. Even if only one of the safety arms is tilted, the equalizer will also cause the other safety arm to tilt and the safety foot cover will rise smoothly. Since the sprocket 70 is fixed to the safety arm, the safety arm is
When it is rotated by 0 °, the sprocket 77 is rotated by 90 ° by the chain 71 and the steel belt 72, and the sector gear 78 fixed thereto is rotated, and the safety arm on the opposite side is rotated by 9 °.
It will rotate 0 °. Reference numerals 73, 74, 75, 76
Is a guide roller. Reference numeral 81 is a screw shaft and roller portion, and 82 is a cover of the equalizer. In FIG. 16, 13-1 and 13-2 are guides for a safety foot cover, and h is a rising stroke size. In this figure, the equalizer is arranged in the center of the step, but in the case of the female screw drive type lifting device, it is arranged on the front side of the lifting device because it interferes with the motor. FIG. 17 shows an example of a safety arm equalizer having another structure. Reference numeral 85 is a cylinder fixed to the safety arm, and the steel wire 87 is fixed at position 86.
When the safety arm rotates 90 °, it moves by a quarter of the circumference of the cylinder 85. Therefore, if this is set as h dimension, the safety foot cover will be raised by h dimension, and the equalizer function of the left and right safety arms will also be exhibited.

FIG. 18 is an illustration of a fall prevention sensor of the stair climbing device. If the screw lead angle is set above the slip angle in order to increase the lifting speed of the stair climbing device, the lifting device will drop if the chain breaks. In order to prevent this, when the descending speed of the stair climbing device exceeds a set speed, it is necessary to detect this and stop the device. In FIG. 18, reference numeral 11 is a roller guide rail,
90 is a roller for speed detection, 91 is a roller rotating shaft, 4
-2 is a plate fixed to the step 1, 95 is a distance collar, 92 is a bearing, 93 is a spacer,
94 is a nut and 96 is a key. Reference numeral 97 is a main body portion of the centrifugal force type sensor, which has a pin 98 and a bearing 99.
The weight 100 is attached through. The weight 100 is pulled toward the center by a spring 101. When the stair climbing device falls and the rotation of the speed detection roller increases, the weight overcomes the spring 101 due to centrifugal force and opens outward, and strikes the actuator 102 of the limit switch 103 (LS4), which activates the limit switch. As a result, the fall prevention device of the stair climbing device of FIG. 19 operates.

19 to 20 are explanatory views for explaining the fall prevention device of the stair climbing device. FIG. 19 is a sectional view, FIG.
0 is a perspective view. Reference numeral 10 is a screw shaft, 50 is a female screw,
57 is a ratchet fixed to the female screw by serration. If the ratchet has pawls (also referred to as stoppers) 107, the female screw cannot rotate, so the stair climbing device cannot descend. When the power of the stair climbing device is turned on, the coil 109 (SOL1) is excited and the link 110
Is pulled and the spring 108 is compressed to rotate around the pin 106, and the tip of the pawl 107 is removed from the ratchet 57.
When the claw 107 comes off, the contact of the limit switch 120 becomes O.
It becomes N and satisfies one of the operating conditions of the stair climbing device. The coil 109 is turned off when the limit switch 103 (LS4) of the fall prevention sensor of FIG. 18 is activated, and the pawl 107 is caught in the ratchet 57 by the force of the spring 108, so that the stair climbing device is stopped. FIG. 20 is a perspective view for explaining a structure for forcibly pulling out the pawl 107 of the fall prevention device of the stair climbing device when it is caught in the ratchet 57 and does not come off even when the coil 109 is excited. The link 117 is interlocked with the movement of tilting the safety arm. When the safety arm is tilted, this force is applied to the cam 1 via the link 116 and the shaft 114.
By rotating 13 to push down the pawl 107, the tip of the pawl 107 can be removed from the ratchet 57.

FIG. 21 is an explanatory view for explaining a phototube type safety device. In FIG. 21, reference numeral 125 is a photoelectric tube type sensor, which is arranged on the front and rear surfaces of the stair climbing device. When a person or object cuts the luminous flux of the photoelectric tube type sensor while the stair climbing device is moving up and down, the electrical contacts of the photo tube sensor are opened, so the stair climbing device stops and it is possible to avoid interference with people or objects and ensure safety. .

FIG. 22 is an explanatory view for explaining the power feeding system and the control board layout of the female screw drive type stair climbing device. FIG. 22
In the figure, reference numeral 126 is a closed trolley wire power feeding unit arranged on the side surface of the stairs, and 127 is power wiring for the motor. It is also possible to employ a flexible protective tube for electric wires (for example, runner flex), an electric wire winding device, or the like instead of the closed trolley wire. Reference numeral 128 is a control panel, 129 is an emergency stop push button, and 130 is a green ready indicator light. When this is lit, the ascending / descending push button can be pressed to move the stair climbing device up and down.

FIG. 23 is a standard electric circuit diagram of the stair climbing device. In FIG. 23, the limit switch LS1 is ON when the safety arm is used, OFF when not used, LS2, LS3.
Is ON when the stopper claw 107 is pulled out, and is OF when entering
F and LS4 are normally ON, fall OFF, LS5, LS
6 is OFF when the stair climbing device is at the upper limit, and LS6 and LS7 are OFF when the stair climbing device is at the lower limit. CR1, CR2, C
R3, CR4, and CR5 are relays, and MS1 and MS2 are motor start / stop relays. Climbing stair lifts,
The descending operation push button is arranged near the first floor wall and the second floor wall of the main body of the apparatus so that it can be conveniently used.

[0029]

As is clear from the above description, according to the stair climbing device of the present invention, the stairs can be raised and lowered on the first floor and the second floor (the lower floor and the upper floor) while maintaining the conventional stair function. It is possible to raise and lower by both automatic and manual methods, and it is possible to provide a safe and comfortable living life. In addition, the stair climbing device of the present invention is less expensive than an elevator and does not take up a lot of installation space, so that land and buildings can be used efficiently and it is economical.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a screw shaft drive type stair climbing device.

FIG. 2 is a sectional view of a step portion of a screw shaft drive type stair climbing device as seen from a side surface.

FIG. 3 is a perspective view showing a state in which the stair climbing device is not used.

FIG. 4 is a perspective view showing a state where a stair climbing device is used.

FIG. 5 is an explanatory view illustrating a female screw drive type stair climbing device.

FIG. 6 is an explanatory view illustrating a required space of a female screw drive type stair climbing device.

FIG. 7 is an explanatory view for explaining a female screw drive section of the female screw drive type stair climbing device.

FIG. 8 is a perspective view illustrating a power train of a female screw drive type stair climbing device (layout when the step height is small).

FIG. 9 is a perspective view illustrating a power train of a female screw drive type stair climbing device (a layout in which a motor is placed horizontally and the step height is kept small).

FIG. 10 is a perspective view for explaining the power train of the female screw drive type stair climbing device (layout when there is room in the step height).

FIG. 11 is a cross-sectional view (for heavy load) illustrating the internal screw rotating portion structure.

FIG. 12 is a cross-sectional view (for medium load) illustrating a structure of a female screw rotating portion.

FIG. 13 is a cross-sectional view (for light load) illustrating a structure of a female screw rotating portion.

FIG. 14 is an explanatory view for explaining that the connection between the step and the housing has a flexible structure.

FIG. 15 is a sectional view seen from the front for explaining the movements of the safety arm and the safety foot cover.

FIG. 16 is a side sectional view illustrating the movements of the safety arm and the safety foot cover.

FIG. 17 is an explanatory view of another method for explaining the movements of the safety arm and the safety foot cover.

FIG. 18 is an explanatory diagram of a stair lift device fall prevention sensor.

FIG. 19 is an explanatory view illustrating a fall prevention device of a stair climbing device (a cross-sectional view illustrating the fall prevention device).

FIG. 20 is a perspective view illustrating a stopper bite release mechanism.

FIG. 21 is an explanatory diagram illustrating a phototube type safety device.

FIG. 22 is an explanatory diagram illustrating a power feeding method and a control panel position of the female screw drive type stair climbing device.

FIG. 23: Standard electric circuit diagram of stair climbing device

[Explanation of symbols]

F1 Floor of the first floor F2 Floor of the second floor S1 First step of stairs S2 Second step of stairs S Main frame of stairs M Passenger h Lifting stroke dimension of safety foot cover device 1, 1a, 1b, 1c, 1d 1e Step (step body frame) 2, 2-2 Pillar 3, 3-1, 3-2, 3-3, 3-4 Safety foot cover pull-up rod, link, etc. 4 Base plate 5 Plate 6, 7, 8 Roller 9 Female screw 10 Screw shaft 11 Roller guide rail 12, 12-1, 12-2, 12-3, 12-4 Roller rail guide support material 13-1, 13-2 Safety foot cover guide 14-1, 14-2 Safety foot Covers 15 and 15-2 Safety arms 16-1 and 16-2 Legs of the lifting device stair unit 16-3 and 16-4 Bolts 20, 40, 40-1, 40-2, 40-3 and 40-4
Motor 21 Torque limiter 22, 24, 26, 28, 32, 41, 43, 45, 5
9, 70, 77 Sprocket 23, 27, 42, 46, 71 Chain 29, 30 Support stand 31 Flange 34 Motor mounting base 35 Base plate 36, 128 Control panel 50 Female screw 51, 52, 92, 99, 111 Bearing 54 Female screw housing ( Housing) 55 O-ring 57 Ratchet 58, 94 Nut 65 Housing fastening bolt 65-2 Knock pin 65-3 Rubber bush 72 Steel belt 73, 74, 75, 76 Guide roller 78 Sector gear 79, 103, 120 Limit switch 90 Speed detection roller 91, 114 Shaft 97 Centrifugal Force Sensor Base 98, 106, 112 Pin 100 Weight 101, 108 Spring 102 Actuator 105, 115 Retainer 107 Claw ( Topper) 109 Solenoid 110,116,117 link 113 cam 125 phototube type sensor (phototube safety device) 126 sealed trolley wire supply unit 127 for motor power cable 129 Emergency stop push button 130 Ready indicator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masao Okubo 3-9-20 Teranochu, Ayase City, Kanagawa Prefecture (72) Inventor Kazuko Okubo 3-9-20 Teranochu, Ayase City, Kanagawa Prefecture (72) Shin Okubo 3-9-20 Teraochu, Ayase City, Kanagawa Prefecture (72) Inventor Gen Okubo 3-9-20 Teranochu, Ayase City, Kanagawa Prefecture

Claims (4)

[Claims] 1. A staircase installed in a general house or a small office building, which is used for hoisting and hoisting people, and is normally used to go up and down manually, and a hoisting device is used to hoist with power. It has a structure capable of both of these, and has two or one screw shafts supported at two points near the lower part and the upper part of the stairs having the same slope as or close to the slope of the stairs, and this screw For passengers who have a horizontal part that moves the female screw in the length direction of the screw shaft by rotating either the shaft or the female screw that fits in this with a motor through a chain, cog belt, or gear, etc. A stair climbing device comprising a plurality of rollers and a plurality of roller guide rails for lifting and lowering a step along a slope of a stair, and supporting a lifting device moving part, a weight of a passenger. 2. A safety arm for ensuring the safety of a person in the stair climbing device according to claim 1, a safety foot cover having a structure that appears and disappears in conjunction with the safety arm, and a photocell safety device provided on the front and rear surfaces of the lifting device. A stair climbing device, which is provided with all or one or more of a device and a fall prevention device that mechanically stops the device by detecting a descending speed of the device. 3. The stair climbing device according to claim 1, wherein the alignment accuracy, the bending of each part due to the occupant's load, and the dimensional tolerance of the screw shaft and the female screw are allowed within a range that can be manufactured at low cost, the biting of the screw shaft and the female screw. A stair climbing device having a flexible mounting structure for connecting the female screw housing and the step portion so as to prevent the occurrence of jamming and soften the impact when the operation is stopped. 4. A stair climbing device, characterized in that the stair climbing device of claim 1 and the staircase part are integrated into a unit structure.