JP4223090B2 - Stair lift rail and stair lift using the rail - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is for a stair lift that is laid along a staircase and bent in a two-dimensional direction or a three-dimensional direction along a staircase landing or a spirally curved portion to guide the lift of a lift. The present invention relates to a rail and a stair lift using the rail.
[0002]
[Prior art]
Conventionally, a rail for a stair lift is constituted by a pair of pipe-like members parallel to each other and spaced apart in the vertical direction.
[0003]
[Problems to be solved by the invention]
However, when the pipe-shaped member constituting the rail is bent two-dimensionally or three-dimensionally along the stairs, the pipe-shaped member may be crushed into a flat shape, which may hinder the lifting and lowering of the lifting body. In addition, since the rails are provided in a pair of upper and lower sides, if the rails are flattened and flattened, it is difficult to set the vertical interval to a predetermined interval.
[0004]
For this reason, in the processing of the pipe-shaped member, there is a problem that it is necessary to perform the bending process with care so that the pipe-shaped member is not crushed, which requires time and labor. In particular, when the radius of curvature is small, there is a problem that it tends to collapse.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a rail for a stair lift that can have a constant cross-sectional shape and can be bent according to the bending of the stair, and a stair lift using this rail.
[0006]
[Means for Solving the Problems]
In the rail for a stair lift that is laid along the stairs (10) and guides the lift of the lift (3), a plurality of rail pieces that are continuously connected in the lift direction of the lift (3) (6), and the rail piece (6) is oriented in the vertical direction, at least one of which is a rack piece (25) (24) with which the sprockets (54) (39) of the elevating body (3) mesh. An upper rail body (8) and a lower rail body (9) formed by overlapping a plurality of plate pieces (28), (25), (16), and (24) are connected to the upper portion of the side plate (7) facing in the vertical direction. and it is formed by providing superimposed on the lower, the upper rail body (8) and the lower rail member (9), allowing the upper the lifting body (3) travels, the rack piece (25) ( 24) The upper rail body (8) and the lower rail body (9) Forming a rack (5) on the lower side of the is connected to a descending direction upper rail body (8) a lower rail body (9) is solved by the stairlift rail (2).
[0007]
In this case, in the stair lift rail (2), at least one of the plurality of rail pieces (6) may be curved in the vertical direction.
[0008]
Further, in the stair lift rail (2), at least one of the plurality of rail pieces (6) may be curved in the left-right direction.
[0009]
At least one of the plurality of plate pieces (28), (25), (16), and (24) facing the vertical direction of the upper and lower rail bodies (8) and (9) is at least one of the lifting bodies. The rack pieces (25) and (24) with which the sprockets (54) and ( 39 ) mesh with each other are connected to the elevating direction of the elevating body to form the rack (5).
[0010]
There is a stair lift (1) provided with any one of the above-described elevator rails (6) and a lift (3) that is guided by the rails to move up and down.
[0011]
In addition, the code | symbol in parenthesis is the code | symbol attached | subjected in order to refer drawings, This code | symbol does not limit a structure at all.
[0012]
[Action]
The rail for the stair lift (2) includes an upper rail body (8) and a lower rail body (9) formed by overlapping a plurality of plate pieces (28), (25), (16), and (24). 7) Since the rail pieces (6) formed by being overlapped on the upper and lower parts are continuously connected in the ascending / descending direction of the elevating body (3), even if they are curved up and down or left and right, The plate pieces can be accurately formed according to the dimensions. Moreover, since the cross-sectional deformation of the bent plate pieces is slight, the plate pieces are formed accurately and in the same cross-sectional shape over the entire length. Further, since the upper and lower rail bodies (8) and (9) are provided on the side plate (7) processed in the same manner, the vertical interval is kept at a predetermined interval.
[0013]
Before and after the landing (11) of the stairs (10), the rail (2) must be bent in the vertical direction. In this case, a rail piece (6) having a shape curved in the vertical direction is used. Vertically curved rail piece (6), in order to form overlapping a plate piece which is cut into flat and curved, in comparison with the case of using a conventional pipe to reduce the radius of curvature.
[0014]
Moreover, in the part where the staircase is spiral, the rail (2) must be spiral. In this case, a rail piece curved in the left-right direction is used. Since the rail piece curved in the left-right direction is formed by stacking the plate pieces cut by bending in the thickness direction, it is composed of plate pieces with a slight cross-sectional deformation and has a curvature compared to the case of using a conventional pipe. The radius can be reduced.
[0015]
Thus, the curved portion of the rail can reduce the radius of curvature in order to connect the rail pieces, and is formed in a shape that follows the shape of the stairs.
[0016]
Since the rail for the stair lift is formed by continuously connecting the rail pieces (6), the rail (2) may be weakened. For this reason, if at least one of the connection positions of the side plates (7), the upper rail bodies (8), and the lower rail bodies (9) is shifted with respect to the other connection positions, The parts reinforce each other.
[0017]
The stair lift rail (2) is provided with a lift drive rack (5) so that the lift (3) can be moved up and down.
[0018]
In the stair lift using the above-mentioned stair lift rail (2), the cross section of the rail (2) is accurately formed over the entire length and is the same, so that the lift is smoothly lifted and lowered.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.
[0020]
The stair lift 1 is a device that lifts and lowers stairs by placing a disabled person such as an elderly person, a disabled person, or a sick person. A rail 2 and a lift 3 that moves up and down with the rail 2 as a guide. And.
[0021]
The configuration of the rail 2 will be described.
[0022]
The entire rail 2 is formed in a band shape, and is laid along the stairs 10 supported by the support column 4. The rail 2 is formed with a curved portion 14 in which a portion corresponding to the boundary between the landing 11 and the step 13 is curved in a two-dimensional direction, and the boundary between the landing 11 and the step 13 where the direction of the stairs 10 changes (reference numeral 12). A curved portion 15 in which a portion corresponding to (shown portion) is curved in a three-dimensional direction is formed.
[0023]
The rail 2 is a rail piece formed by overlapping plate pieces in order to make the cross-sectional shapes of the straight portion and the upper rail 8 and the lower rail 9 (described later) the same in a portion curved in a two-dimensional direction or a three-dimensional direction. 6 are continuously connected.
[0024]
The rail piece 6 includes a side plate 7 cut to a desired length, an upper rail body 8 provided on the upper side of the side plate 7, and a lower rail body 9 provided on the lower side of the side plate 7. The upper rail body 8 and the lower rail body 9 are portions where the traveling roller 22 of the elevating body 3 travels. The pin presser / side roller guide plate 28, roller support plates 24 and 25, and the core plate 16 ( In the present embodiment, these plates are collectively referred to as “plate pieces”). The side plate 7 and the plate pieces 28, 24, 25, 16 are made of steel plates, strip steel plates or strip steel plates.
[0025]
In the rail 2, a portion along the step 13 includes an upper rail body 8-1 formed by superimposing a straight and flat strip-shaped steel plate on a side plate 7-1 of a straight and flat strip steel plate, and a lower rail. The rail piece 6 formed by providing the body 9-1 is connected to form a straight line.
[0026]
The boundary between the landing 11 and the step 13 is an upper rail body formed by overlapping a plate of a steel plate processed into a shape curved in the plane direction on the side plate 7-2 processed into a shape curved in the plane direction. The rail piece 6 formed by providing the 8-2 and the lower rail body 9-2 is connected and bent in a two-dimensional direction.
[0027]
The portion of the landing 11 and the step 13 where the direction of the staircase 10 changes is formed on the side plate 7-3 formed by bending the strip steel plate in the plate thickness direction with a press machine, and the strip steel plate is bent in the plate thickness direction with the press machine. It is formed by connecting a rail piece 6 formed by providing an upper rail body 8-3 and a lower rail body 9-3, which are formed by overlapping the formed plate pieces, and bending in a three-dimensional direction. .
[0028]
As described above, the rails 2 are all formed by connecting rail pieces including a side plate, an upper rail body, and a lower rail body formed by cutting, punching, or bending a strip steel plate with a press machine. Therefore, it is faithfully formed along the shape of the stairs 10 by a simple processing method with a uniform cross-sectional shape over the entire length and a small radius of curvature. For this reason, the rail 2 can smoothly elevate and lower an elevating body 3 described later.
[0029]
A roller rack 5 is provided at the lower edge of each of the upper rail body 8 and the lower rail 9 constituting the rail 2. That is, the roller rack 5 is provided on the upper edge 2a and the lower edge 2b of the rail.
[0030]
The configuration of the roller rack 5 will be described.
[0031]
The roller rack 5 is a kind of rack that meshes with a sprocket of the elevating body 3 to be described later, and a pair of left and right roller support plates 24 and 25 having different thicknesses provided on both sides of the upper rail body 8 and the lower rail body 9. A plurality of pins 27 supported at both ends by the pair of roller support plates 24 and 25 and a cylindrical roller 26 loosely fitted to the pins 27 are provided. The pin 27 is prevented from coming off by a pin presser / side roller guide plate 28 provided on the left roller support plate 25 and the side plate 7 of the rail 2.
[0032]
Similarly to the rail 2, the roller support plates 24 and 25 are flat and straight strips cut to a desired length, strip strips cut into a curved shape in the surface direction, or bent into a curved shape in the thickness direction. The belt-shaped steel plate is formed and connected to the lifting / lowering body 3 in the lifting / lowering direction. That is, the roller rack 5 is also formed by connecting a plurality of rack pieces.
[0033]
Accordingly, the roller rack 5 is also faithfully formed along the shape of the staircase 10 with a uniform cross-sectional shape and a small curvature radius by a simple processing method. For this reason, the raising / lowering body 3 mentioned later can drive up / down smoothly.
[0034]
Instead of the roller rack 5, chains may be provided on the upper and lower edges of the rail, although not shown. In the case of a chain, it can be freely bent in a two-dimensional direction and a three-dimensional direction. Since the chain also has a roller with which the sprocket meshes, it has the same structure as the roller rack 5 and is included in the same concept as the roller rack in the present invention.
[0035]
The structure of the raising / lowering body 3 is demonstrated.
[0036]
The lifting body 3 includes a chair 32 on the machine casing 31. A drive motor 33 is accommodated in the machine casing 31. The rotational force of the drive motor 33 is transmitted to the drive shaft 35 via the speed reduction mechanism 34. The drive shaft 35 is rotatably supported on the machine frame 31 by a bearing 37 provided on the machine frame 31 via a lower flange 36, and has a drive power sprocket 38 in the machine frame 31 with the bearing 37 as a boundary. A driving travel sprocket 39 is provided outside the machine casing 31. The drive travel sprocket 39 meshes with the roller rack 5 provided on the lower edge 2 b of the rail 2.
[0037]
A lower frame 41 is provided on the lower flange 36 via a bearing 40 so as to be rotatable with respect to the machine frame 31. As shown in FIG. 5, the lower frame 41 has a pair of traveling rollers 22 and side rollers 42 arranged in the traveling direction of the elevating body 3.
[0038]
A driven shaft 50 is disposed directly above the drive shaft 35. The driven shaft 50 is rotatably supported on the machine frame 31 by a bearing 52 provided on the machine frame 31 via an upper flange 51, and has a driven power sprocket 53 in the machine frame 31 with the bearing 52 as a boundary. A driven traveling sprocket 54 is provided outside the machine casing 31. The driven traveling sprocket 54 meshes with the roller rack 5 provided on the upper edge 2 a of the rail 2. An upper frame 56 is provided on the upper flange 51 via a bearing 55 so as to be rotatable with respect to the machine frame 31. As shown in FIGS. 3 and 5, the upper frame 56 has a pair of running rollers 22 and a pair of left and right side rollers 42 arranged in the running direction of the elevating body 3.
[0039]
A chain 57 is stretched between the drive power sprocket 38 and the driven power sprocket 53.
[0040]
Finally, the operation of the stair lift 1 will be described.
[0041]
When the drive motor 33 is started, the drive shaft 35 rotates, and the drive power sprocket 38 and the drive travel sprocket 39 rotate in the same direction. The rotation of the drive shaft 35 is also transmitted to the driven power sprocket 53 by the chain 57 meshing with the drive power sprocket 38, and the driven shaft 50 and the driven traveling sprocket 54 rotate in the same direction as the drive shaft 35.
[0042]
Accordingly, the elevating body 3 moves up and down as the driving and driven travel sprockets 39 and 54 rotate and sequentially mesh with the rollers 26 of the roller rack 5. The elevating body 3 travels while being supported by the upper rail body 8 and the lower rail body 9 by the traveling roller 22. The elevating body 3 sandwiches the upper part of the side plate 7 located on the outer side of the upper part and the upper pin presser / side roller guide plate 28 from the left and right with a pair of left and right side rollers 42, and lower pin presser / side roller guide. The lower side roller 42 is brought into contact with the plate 28 to travel without falling off the rail 2.
[0043]
Incidentally, the roller rack 5 of the stairlift 1 described above, that are laid along on the upper edge 2a and lower edge 2b of the rail 2.
[0044]
The vertically moving member 3, and the rollers on the upper frame 56, by the respective rollers on the lower frame 41, that is supported on the rail 2.
[0045]
【The invention's effect】
The rail for the stair lift according to the present invention is formed by stacking the plate pieces in the thickness direction of the upper rail body and the lower rail body for guiding the lift body, and in the rail curved in the vertical direction, the plate pieces are curved in the surface direction. In a rail that is curved in the left-right direction, the plate piece can be curved in the thickness direction to minimize cross-sectional deformation, and the cross-sectional shape can be accurately and uniformly distributed over the entire length. Can be formed.
[0046]
Moreover, the side plates can be formed accurately, and the upper and lower rail bodies are provided on the accurately formed side plates, so that the vertical distance can be made uniform over the entire length of the rails.
[0047]
In addition, since the rail is formed by stacking plate pieces, the radius of curvature can be reduced unlike conventional pipes by stacking plate pieces that can reduce the curvature, and follows the shape of the stairs. It can be made into a shape.
[0048]
Furthermore, the cross-sectional shape of the rail can be formed accurately and uniformly, the distance between the upper rail and the lower rail can be made uniform, the rail can be shaped along the shape of the stairs, etc. Thus, the rail can smoothly guide the lifting body up and down.
[0049]
When the rack is provided on the rail for the stair elevator as in the invention of claim 2, the rail and the rack can be reinforced with each other.
[0050]
If the rail for a stair lift is used as in claim 3, the cross section of the rail is formed to be constant, so that the lift can be lifted and lowered smoothly.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a stair lift provided with rails according to an embodiment of the present invention.
FIG. 2 is a perspective view of a rail according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of the stair lift shown in FIG. 1 cut along a drive shaft and a driven shaft.
4 is an enlarged detail view of the upper part of the stair lift of FIG. 3;
5 is a view of the stair lift shown in FIG. 1 as viewed from the right side.
[Explanation of symbols]
1 Stair Elevator 2 Stair Elevator Rail 2a Upper Edge 2b Lower Edge 3 Elevator 5 Roller Rack (Rack)
6 Rail piece 7 Side plate 8 Upper rail body 9 Lower rail body 10 Step 14 Bending portion 15 Bending portion 16 Core plate (plate piece)
24 Roller support plate (plate piece)
25 Roller support plate (plate piece)
28 Pin retainer and side roller guide plate (plate piece)
39 Drive Travel Sprocket (Drive Sprocket)
54 Driven sprocket

Claims (2)

In the rail for the stair lift that is laid along the stairs and guides the lift of the lift,
A plurality of rail pieces connected continuously in the lifting direction of the lifting body;
The rail piece, the upper rail body formed by superposing a plurality of plate pieces, at least one sprocket of said lifting body is oriented in the vertical direction is a rack piece meshing with the lower rail member, the vertical direction is formed by providing superimposed on opposite side plates of the upper and lower,
The upper rail body and the lower rail body allow the lifting body to travel on the upper part,
The rack piece forms a rack on the lower side of the upper rail body and the lower rail body by connecting the upper rail body and the lower rail body in the lifting direction of the lifting body,
The rail for the stair lift. A stair lift comprising the rail according to claim 1 and a lifting body which is guided by the rail and moves up and down.

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