JP2004210410A - Step eliminating stairs - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide multifunctional step eliminating stairs capable of reducing cost, facilitating the installation, and providing functions of stairs and a step eliminating machine when installed, which saves space. <P>SOLUTION: These step eliminating stairs are provided with a lift part 2 having a base 10 installed on a lower face D engaged with a step S and hydraulic cylinder 16, 16 lifting and lowering an elevating plate 14 in substantially horizontal condition above from a position of the base 10, a tread structure 50 composed of a tread 40 and a vertical lattice 48, and a variable grade stair part 4 having a pair of left and right handrails 42 connecting a plurality of tread structure 50 rotatably and a side beam 46. The variable grade stair part 4 is mounted on the elevating plate 14 in the lift part 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a step-eliminating staircase having both a function as a step over a step and a function as a step-eliminator for eliminating the step by raising and lowering a plate.
[0002]
[Prior art]
2. Description of the Related Art As a step-eliminating machine for a wheelchair, one disclosed in Patent Documents 1 and 2 is known. In these step elimination machines, an elevating plate (top plate, table) is moved up and down by an X-link mechanism (scissor link, pantograph mechanism). In such a step eliminating machine, a wheelchair is placed on an elevating plate in a state where an elevating plate is fitted to one of upper and lower surfaces related to the step, and the elevating plate is raised or lowered until it fits with the other, thereby eliminating the step.
[0003]
Further, as a variable gradient stair, one disclosed in Patent Document 3 is known. Such a variable gradient staircase is configured such that a plurality of treads are rotatably connected to a pair of left and right parallel struts and parallel to each other, and a base is rotatable to the lower ends of the pair of struts and parallel to the treads. Do it. In the variable gradient stairs, the tread is parallel to the base installation surface (horizontal plane) at an arbitrary column gradient.
[0004]
Further, as an apparatus having a function as a staircase and a function to form a plane and move up and down, there is known an elevating floor apparatus disclosed in Patent Document 4. This elevating floor device has a frame on which a plurality of treads are placed, and a link rod parallel to the frame, and links each tread to the link rod. In this device, a main jack and a sub jack are further arranged below both ends of the frame, and each tread is made stepwise by extending only the main jack, and all treads are made horizontal by expanding and contracting both in synchronization. While going up and down.
[0005]
[Patent Document 1]
Japanese Patent No. 2914216 [Patent Document 2]
Japanese Patent No. 2927749 [Patent Document 3]
JP-A-11-107520 [Patent Document 4]
Japanese Patent No. 2584410
[Problems to be solved by the invention]
In order to provide the above-described step eliminator together with stairs for healthy persons, a sufficient space is required beside the step, and in many cases, such a space cannot be secured. In this case, if only the stairs are installed, wheelchair users etc. cannot eliminate the steps, and if only the step-eliminating machine is installed, it is relatively inconvenient in terms of responsiveness that healthy people can use every time they pass. Become.
[0007]
The variable slope stairs cannot provide the function of a step eliminator, and only exhibits the function of a normal stair after being installed on a step.
[0008]
In the elevating floor device, different types of main jacks and sub jacks must be arranged as drive sources, or jacks must be installed at both ends of the frame, so that control becomes complicated, Relatively high cost. In addition, since each jack must be arranged below the tread, the lower surface relating to the step is dug down to accommodate each jack, and unless all the treads are aligned with the lower surface, the jack does not function as a step eliminating machine or a stair. Drilling down the bottom surface is time-consuming, and if it is impossible to drill down, it is not possible to install an elevator. In addition, the above-described elevating floor device cannot provide a handrail when performing its function as a staircase or a step eliminating machine.
[0009]
Therefore, an object of the present invention is to provide a multi-function step eliminating staircase which is low-cost, easy to install, and can exhibit the function of a stair and a step eliminating machine by installation, and saves space. It is what it was.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a lift having a base installed on a lower surface relating to a step, and a drive mechanism that moves the elevating plate up and down in a substantially horizontal state above the position of the base. Part, and, a tread, or, a tread structure comprising a tread and a grid, and provided a variable gradient stair portion having a pair of left and right girders rotatably connect a plurality of tread structures, the variable gradient stair portion, It is characterized in that it is mounted on a lifting plate of a lift section.
[0011]
In order to achieve the object of providing higher safety by providing a handrail in addition to the above object, the invention according to claim 2 is the above-mentioned invention, wherein the tread structure has a vertical lattice. In addition, one of the girders is connected to the upper part of the vertical lattice, so that it becomes a handrail passed on the vertical lattice.
[0012]
The invention according to Claims 3 and 4 provides, in addition to the above object, a step board structure in order to achieve the object of further increasing the convenience in using the device as a variable gradient stair in an efficient configuration. The object is joined to the driving mechanism, and the lifting plate can be separated from the driving mechanism. When the lifting plate separates the driving mechanism, the driving mechanism changes the gradient of the variable gradient stairs, while the lifting plate is driven by the driving mechanism. When the drive mechanism is joined, the drive mechanism raises and lowers the elevating plate on which the almost graded variable slope stairs are placed, or joins the outer tread plate structure with the drive mechanism and slides it to the end of the spar opposite to this A member is provided, and when the drive mechanism lifts the outer tread structure, the end of the girder slides on the elevating plate by the slide member, so that the gradient of the variable gradient stair portion can be changed. To.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1A is a diagram showing a left side surface of a step eliminating staircase 1 according to an embodiment of the present invention, FIG. 1B is a diagram showing a front view of the step eliminating staircase 1, and FIG. It is a figure showing the plane of solution stairs 1. The step eliminating stairs 1 has a lift section 2 constituting a lower portion thereof, and a variable slope step section 4 mounted on the lift section 2.
[0014]
The lift unit 2 is supported substantially horizontally on a base 10, which is a frame disposed at the lowermost part, X link mechanisms 12, 12 standing from the left and right side surfaces of the base 10, and an upper side of the X link mechanisms 12, 12. An elevating plate 14 that can be raised from the position of the base 10, hydraulic cylinders 16 and 16 as a driving mechanism for elevating the elevating plate 14, and a hydraulic pressure generating unit that is connected to the hydraulic cylinder 16 and can supply hydraulic oil ( (Not shown).
[0015]
Each hydraulic cylinder 16 can expand and contract the piston rod 32 in the cylinder tube 30 by appropriately receiving the hydraulic pressure adjusted by the hydraulic pressure generating unit. On the other hand, raised portions 34, 34 each having a size capable of accommodating the folded X-link mechanism 12 are formed on both left and right edges of the lifting plate 14. Then, the cylinder tube 30 of each hydraulic cylinder 16 is attached to the outside of the corresponding raised portion 34, and the tip of the piston rod 32 is connected to the base 10. The hydraulic cylinders 16 and 16 are similarly driven and controlled. In addition, a guide 35 for allowing each hydraulic cylinder 16 (cylinder tube 30) to move substantially vertically with respect to the step S is provided.
[0016]
On the other hand, the variable gradient stair portion 4 has treads 40, 40,... Having a size approximately equal to the tread of a general stair, and left and right handrails 42 as one girder supported at a height from the tread of the general stair. , 42, side girders 46, 46 as the other girders disposed on the left and right sides of each tread plate 40, and vertical grids 48, 48,... Standing between the handrails 42 and the side girders 46. .
[0017]
In the variable gradient staircase 4, as shown in FIG. 3, the tread plate 40 and the vertical lattices 48, 48 are combined in an L-shape when viewed from the left side and a concave shape when viewed from the front, and the tread plate structure An object 50 is formed. That is, the vertical lattice 48 is set up and fixed from the left corner side and the right corner side on the front side of the tread plate 40, and the tread plate structure 50 is obtained.
[0018]
Further, the upper portion of the tread structure 50 is rotatably connected to the handrails 42, 42, and the lower portion is rotatably connected to the side beams 46, 46. That is, the upper end of the vertical lattice 48 is rotatably connected to the handrail 42, and the lower end of the vertical lattice 48 is rotatably connected to the side beam 46. A plurality (four in the figure) of such tread plate structures 50 are arranged in the direction of the handrails 42 or the side girders 46 (forward direction). Note that a flap 52 that can be stopped in an upright state is provided on the right side of the tread plate 40 closest to the front.
[0019]
The lifting plate 14 is capable of freely separating the hydraulic cylinders 16. That is, in the lifting plate 14, a piece 57 having a hook hole 56 is provided above the rear end of each raised portion 34. At the rear end of each side beam 46, a separating cylinder 59 having a rod 58 that protrudes into and retracts from the hook hole 56 is provided so as to protrude outward. Further, a control unit (not shown) having a switch is connected to each separation cylinder 59 so that the rod 58 can be similarly switched in and out by switching the switch.
[0020]
The variable gradient staircase 4 is mounted on the lift 2 as follows. That is, the step driving plates 60 and 60 are fixed above and below the vertical lattices 48 of the tread plate structure 50 closest to the rear of the variable gradient staircase 4, and each step driving plate 60 is connected to the corresponding side of the base 2. To the cylinder tube 30 of the hydraulic cylinder 16. In this state, the variable gradient staircase portion 4 is placed on the lifting plate 14 of the base portion 2 and between the raised portions 34, 34.
[0021]
When the lifting and lowering plate 14 and the hydraulic cylinders 16 are separated from each other, when both rods 58 come out, the rods 58 are hooked on the hook holes 56, so that the lifting and lowering plate 14 is moved to the rearmost tread plate structure 50 and the step drive. When the rods 58 are joined to the cylinder tube 30 via the plate 60 and both rods 58 are sunk, the rods 58 are separated from the hook holes 56, and the lifting plate 14 separates the cylinder tube 30.
[0022]
In addition, the step eliminating stairs 1 is installed with the base 10 placed on the lower surface D related to the step S in a state where the back side of the tread plate 40 closest to the rear is located near the step S. A roller 62 as a slide member is rotatably provided at the front end of each side beam 46.
[0023]
Such a step eliminating step 1 operates as shown in FIGS. 4 and 5 as a variable gradient step. That is, when the piston rod 32 is contracted into the cylinder tube 30, each X-link mechanism 12 is in a horizontal state and fits in the raised portion 34, and the elevating plate 14 is continuous with the lower surface D related to the step S. In this state, the lifting plate 14 is separated from the side beams 46, 46 (cylinder tubes 30, 30), and the piston rod 32 is extended.
[0024]
Then, the elevating plate 14 does not lift, while the tread plate structure 50 on the rearmost side (the step S side) is lifted vertically via each step drive plate 60. Further, the other tread structure 50 is also lifted in the vertical direction to a height gradually lowering from the back side to the front side, and the frontmost end of each side beam 46 is left on the elevating plate 14 via the roller 62. , And each handrail 42 or each side beam 46 rotates with respect to each tread structure 50. The treads 40 are substantially perpendicular to the vertical lattices 48, are substantially parallel to the base 10 or the lower surface D of the step S, and keep substantially horizontal. In addition, the handrails 42, 42 are positioned at the height of each vertical lattice 48 in a state substantially parallel to each side beam 46.
[0025]
When the rearmost tread plate 40 is aligned with the upper surface U of the step S, it is possible to provide a function as a stair ascending from the front side to the rear side, and to increase the degree of expansion of the piston rod 32 of the hydraulic cylinder 16. By adjusting, it is possible to provide a function as a variable gradient staircase in which a substantially horizontal staircase of each tread plate 40 can be built for an arbitrary step within a range corresponding to the maximum extension of the piston rod 32. In addition, handrails 42 are provided on the left and right sides of the stairs. To return the stairs to a substantially horizontal gradient, the frontmost end of each side beam 46 moves rightward on the elevating plate 14 via the rollers 62.
[0026]
Further, as shown in FIG. 1, FIG. 2, or FIG. 6, the step eliminating stair 1 also operates as a step eliminating machine. That is, the elevating plate 14 is housed in the base 10 so as to be continuous with the lower surface D relating to the step S, the lower end of the cylinder tube 30 is arranged on the elevating plate 14, and the rod 58 of the separating cylinder 59 is inserted into the hanging hole 56 to thereby move the elevating plate 14. Are joined to the side girders 46, 46 (cylinder tubes 30, 30). At this time, all the treads 40 are placed on the elevating plate 14 and are in a substantially horizontal state, and the variable gradient stairs 4 are almost non-gradient (FIG. 6).
[0027]
When the hydraulic cylinder 16 is driven to extend the piston rod 32, the lifting plate 14 is held substantially horizontally via the step driving plate 60, the tread plate structure 50 on the rearmost side, and the separating cylinder 59 or the piece 57. Go up. At this time, each X link mechanism 12 supports substantially the entire lifting plate 14. Further, the step board structure 50 on the step S side is lifted, and the other step board structures 50 are also lifted with the step board 40 resting on the elevating plate 14. All treads 40 rest on the lift plate 14 and are substantially horizontal. Further, the side girders 46, 46 hardly move due to joining with the lifting plate 14 (FIGS. 1 and 2).
[0028]
In a state where the elevating plate 14 is continuous with the lower surface D relating to the step S, the operator rides on the substantially horizontal treads 40, 40,... From the front side in a wheelchair or the like, stands up and fixes the flap 52 appropriately, and drives the hydraulic cylinder 16. When the elevating plate 14 is raised to the upper surface U relating to the step S, the elevating plate 14 or each tread plate 40 is continuous with the upper surface U relating to the step S on the back side, and the wheelchair or the like moves to the upper surface U relating to the step S. And the step S is eliminated. If the degree of elongation of the piston rod 32 is arbitrarily adjusted by adjusting the drive of the hydraulic cylinder 16, a step having an arbitrary size can be eliminated within a range corresponding to the maximum elongation of the piston rod 32. It also provides a function as a step eliminator corresponding to a step of an arbitrary size. In addition, the handrails 42, 42 or the vertical lattices 48, 48,... Can be arranged around the elevating plate 14 by placing the variable gradient staircase 4 on the elevating plate 14.
[0029]
The above-described step eliminating stairs 1 has the following effects. That is, the lift portion 2 including the base 10 installed on the lower surface D relating to the step S, and the hydraulic cylinders 16, 16 that vertically move the elevating plate 14 upward and downward from the position of the base 10, and the tread plate 40. And a variable gradient stair portion 4 having a pair of left and right handrails 42 and side girders 46 for connecting the plurality of tread structures 50 rotatably. Is mounted on the lift plate 14 of the lift unit 2, the lift plate 14 is raised and lowered by the hydraulic cylinders 16, 16 which are driven in the same manner, so that a function as a step difference canceller can be easily provided. Is lowered to the position of the base 10 and the function as a variable gradient staircase can be easily provided by using the variable gradient staircase section 4. The function of the stairs and the step eliminating machine can be provided only by securing the space, the step eliminating stairs 1 can be configured at low cost, and there is no need to dig the lower surface D relating to the step S when installing the base 10. Easy to install.
[0030]
Further, the tread structure 50 includes vertical lattices 48, 48,..., And the handrails 42 are connected to the upper portions of the vertical lattices 48, 48,. Therefore, in the case of a staircase or a step eliminator, the handrail 42 located on the side can be provided, and the safety can be further enhanced.
[0031]
Further, the tread plate structure 50 is joined to the hydraulic cylinders 16, 16, and the elevating plate 14 can be separated from the hydraulic cylinders 16, 16. When the elevating plate 14 separates the hydraulic cylinders 16, the hydraulic cylinder When the lifting plate 14 is connected to the hydraulic cylinders 16, 16, 16 changes the gradient of the variable gradient staircase 4, the hydraulic cylinders 16, 16 lift the lifting plate on which the almost graded variable gradient staircase 4 is mounted. In order to move up and down 14, the hydraulic cylinders 16 and 16 drive the up and down movement of the up and down plate 14 by changing the position of the up and down plate 14 from the hydraulic cylinders 16 and 16 or change the gradient of the variable gradient stair unit 4. The variable gradient staircase 4 is installed by the driving force of the hydraulic cylinders 16, 16. It becomes more easy.
[0032]
In addition, the step board structure 50 on the step side is joined to the hydraulic cylinders 16, 16, and a roller 62 is provided at the end of each of the side girders 46 on the opposite side, so that the hydraulic cylinders 16, 16 are connected to the step board structure on the step side. When the roller 50 is raised, the end of each side beam 46 slides on the elevating plate 14 by the roller 62 so that the gradient of the variable gradient stair portion 4 is changed. Therefore, the operation of changing the gradient of the stairs can be performed smoothly. Can be changed quickly, and handling becomes easy.
[0033]
Here, another embodiment of the present invention, which is mainly a modification of the above embodiment, will be described. As shown in FIG. 7, the tread structure is configured to have an inverted T-shape when viewed from the side. That is, in the tread structure 70, the vertical lattices 74, 74 are erected from substantially the center of the side of the tread 72. Further, the upper end of the vertical lattice 74 and the handrail are rotatably connected, and the lower end of the vertical lattice 74 and the side beam are rotatably connected. Even when the tread structure 70 is configured in this manner, a step-elimination staircase with handrails can be provided.
[0034]
In addition, the lifting plate and the hydraulic cylinder are always in a joined state by omitting the separating cylinder, a hook portion for the step is provided on the variable gradient stair portion, and the step plate structure on the step side is manually lifted to raise the step plate to the upper surface relating to the step. A variable gradient stair function is provided by hanging according to. In this case, although the hydraulic cylinder cannot be used for installing the stairs, it is possible to provide a step eliminating staircase that exhibits both the stair function and the step eliminating function with a simple configuration at a lower cost.
[0035]
Alternatively, the separating cylinder is provided on the lifting plate, and the hanging hole is provided on the side beam or the hydraulic cylinder (cylinder tube). Also, a gripping mechanism for gripping the side girders is provided on the elevating plate so that joining can be performed by gripping. On the other hand, the cylinder tube and the piston rod are arranged in reverse. On the other hand, a ball screw is used as the driving mechanism. Further, the base is formed in a flat plate shape. Alternatively, the link mechanism is omitted, and the lifting plate is suspended. The vertical lattice is removed from the tread structure, the handrail is omitted, and another side girder for rotatably connecting the tread is provided substantially in parallel. A step drive plate is provided on the tread plate. Alternatively, an oblique grid is used instead of the vertical grid. The guide of the drive mechanism is omitted or provided only on one side. A single drive mechanism or three or more drive mechanisms are provided. Also, the slide member is a slide shoe, or the slide member is omitted. Alternatively, a drive mechanism is joined to a part other than the step structure on the step side. Even in these cases, it is possible to provide a multifunctional step eliminating staircase.
[0036]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since the variable gradient staircase is mounted on the elevating plate of the lift, the cost is low, the installation is easy, and the function of the stairs and the step-eliminator can be exhibited by the installation to save space. This has the effect of providing a functional step-elimination staircase.
[Brief description of the drawings]
FIG. 1A is a left side view and FIG. 1B is a front view of a step eliminating step according to the present invention.
FIG. 2 is a plan view of a step for eliminating steps in FIG. 1;
3A is a left side view, FIG. 3B is a front view, and FIG.
4A is a left side view and FIG. 4B is a front view related to a variable gradient staircase function of the step elimination staircase in FIG.
FIG. 5 is a plan view of a step eliminating step in FIG. 4;
FIG. 6 is a left side view relating to a step eliminating function of the step eliminating stairs in FIG. 1;
7A is a left side view, FIG. 7B is a front view, and FIG. 7C is a plan view of a tread plate structure related to the step eliminating staircase in a modification of the step eliminating step of FIG.
[Explanation of symbols]
1. steps to eliminate steps, 2. lift section, 4. variable stair steps, 10. base, 12. X link mechanism, 14. elevating plate, 16. hydraulic cylinder, 30 cylinder tube , 32 piston rod, 34 ridge, 35 guide, 40, 72 footboard, 42 handrail, 46 side beam, 48, 74 vertical grid, 50, 70 footboard Structure, 52 flaps, 56 hook holes, 57 pieces, 58 rods, 59 separating cylinders, 60 step drive plates, 62 rollers, D lower surface, S Step, U ... top surface.

Claims (4)

A base installed on the lower surface related to the step,
A lift unit having a drive mechanism for raising and lowering the lifting plate in a substantially horizontal state above the position of the base, and
A tread, or a tread structure comprising a tread and a grid;
A variable gradient stair portion having a pair of left and right girders for rotatably connecting a plurality of tread structures is provided,
A step elimination staircase characterized in that a variable gradient stair section is mounted on a lift plate of a lift section. The tread structure includes a vertical lattice,
2. The step eliminating step according to claim 1, wherein one of the girders is connected to an upper part of the vertical lattice, and is configured as a handrail passed on the vertical lattice. While joining the tread structure with the drive mechanism,
The lifting plate can be separated by the drive mechanism,
When the lifting mechanism separates the drive mechanism, the drive mechanism changes the slope of the variable gradient staircase, while when the lift plate is connected to the drive mechanism, the drive mechanism lifts the almost slopeless variable gradient staircase. The step for eliminating a step according to claim 1 or 2, wherein the plate is moved up and down. Join the outer tread structure with the drive mechanism,
Provide a slide member at the end of the opposite side of the girder,
4. The step according to claim 3, wherein, when the drive mechanism raises the outer tread structure, the slide member causes the end of the spar to slide on the lifting plate to change the gradient of the variable gradient stair portion. Elimination stairs.

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