JP2001122573A - Staircase with lift mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the necessity for an exclusively working foreman for performing confirmation of safety, operation, etc., also make a staircase usable simultaneously by a walker, by preventing a hazard of touching the walker by a wheelchair moving staircase. SOLUTION: This mechanism comprises a horizontal loading base 13 having in a lower face side a leg part slidably engaged with a guide rail 12 and a staircase 1 mounted between upper/lower floors to vertically movably connect adjacent staircases 4 to each other to mount a plurality of staircases in an intermediate part in the horizontal loading base 13 to be formed with a flat landing part, the landing part is provided capable of lifting between the upper/ lower both floors 2, 3 by lifting of a lift device, the landing part is respectively formed with advancing/retracting surfaces of a wheelchair in a height almost equal to a floor surface of the lower floor 3, when the lift device 10 is positioned in a lower step part of the staircase 1, and in a height almost equal to a floor surface of the upper floor 2, when the lift device is positioned in an upper step part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating stair mechanism capable of elevating a vehicle such as a wheelchair.

[0002]

2. Description of the Related Art As a means for allowing a wheelchair to go up and down on stairs, there is a means using a stair lift as is often found in the premises of a station. In this method, a wheelchair carrier is mounted on a guide rail provided on one wall surface on both sides of the stairs in an overhang state so as to be able to move up and down, and the carrier is moved up and down along the guide rail by a driving source such as a motor. Also,
Japanese Patent Application Laid-Open No. 9-194198 has a horizontal floor at the same height as the floor at the entrance of a passenger aircraft, and a mounting plate large enough to mount a plurality of treads and wheelchairs. A staircase with an upper end attached, and a hydraulic cylinder that rotates the staircase vertically around the upper end, the staircase having a parallel link so that each of the plurality of treads and the mounting plate is always horizontal. The lifting steps to configure are disclosed. Further, Japanese Patent Publication No. 2766091 discloses a middle step and a lower step among three adjacent upper steps, a middle step, and a lower step,
It is raised to the same height as the tread of the upper step to form a wheelchair mounting surface, and it is configured to run on the slope in this state,
And the wheelchair mounting surface is an inclined portion when the wheelchair is mounted, in an escalator device configured to have a step between the steps of the normal stairs adjacent to the upper and lower steps, between the step of the upper step and the step of the middle step and the step of the middle step. There is disclosed an escalator device provided with a plurality of connecting means for connecting between treads of a lower step, and a common power applying mechanism which rises during a wheelchair transport operation and drives the plurality of connecting means via a power transmission mechanism. ing.

[0003]

In the above-mentioned first conventional example using a stair lift, there is a danger that the carriage will move on the stairs and come into contact with pedestrians. A specialized staff is required to perform the operation. Also, in a second conventional example that discloses an elevating step,
When a wheelchair user gets on the board, the stairs are raised and rotated to separate from the ground.During this time, other passengers cannot use the stairs, and a space is formed below the stairs, so it is necessary to enter the building. It is inaccurate for the lifting facility to be adopted. In the third conventional example, since a mechanism for raising the steps to the same height is incorporated in the steps, the configuration must be complicated, and
A plurality of steps with different heights are required. Furthermore, because of the escalator type, it is necessary to provide an endless roller chain, which complicates the structure and requires a space therefor. Japanese Patent Application Laid-Open No. 1-117191 describes an automatic ascending / descending staircase which normally forms a staircase, but is flattened when a wheelchair is used and functions as an elevator on which a wheelchair can be mounted.

[0004] According to the first aspect of the present invention, a stepped vehicle can be moved up and down by connecting a step so that the step can be moved up and down and installing a lifting device in a space below the step so that the landing can be moved up and down. Eliminating the danger of contacting the vehicle, eliminating the need for specialized personnel for performing safety checks and operations, and enabling pedestrians to use the stairs simultaneously.

[0005] The invention of claim 2 has the problem to be solved by the invention of claim 1, and also allows the steps to be formed only by steps of the same shape.

The invention according to claim 3 has the problem to be solved by the invention according to claim 1, and furthermore, by using parallel links, the weight of the steps is reduced.

[0007] The invention described in claim 4 has the problem to be solved by the invention described in claim 1, and furthermore, by providing a vehicle fall prevention means, it is possible to prevent the occurrence of an unexpected situation in which the vehicle falls.

[0008]

As a first means, a guide rail 12 which is erected between the upper two floors and the lower floor three floors and then obliquely upwards, is slidably engaged with the guide rails. An elevating device 10 formed by a horizontal mounting table 13 having joined legs on the lower surface side, and an adjacent step 4 erected between an upper floor and a lower floor and connected to each other so as to be vertically movable. A staircase 1 in which a plurality of intermediate steps are mounted on a horizontal mounting table 13 of the elevating device to form a flat landing section. 2 and 3 are provided so as to be able to move up and down freely, and the landing section has the same height as the lower floor 3 when the elevator 10 is located at the lower part of the stairs 1.
And when it is located in the upper part, the entrance / exit surfaces for vehicles, which are almost the same height as the upper two floors, are formed.

As a second means, there is provided a first means, wherein the adjacent steps are vertically provided with a fitting groove 5 having a lower surface closed in one of the steps, and a connecting projection from the other. 6 was protruded, and the protruding portion was vertically movably fitted into the fitting groove and connected.

As a third means, there is provided a first means, and the adjacent steps are connected to each other by a parallel link 21 so that the tread surface can always hold a horizontal plane.

As a fourth means, there is provided a first means, wherein the lifting device detects that the vehicle on the landing is slower than the relative speed of the landing, and stops the lifting device to prevent the vehicle from falling. Means 25 were provided.

[0012]

1 to 6 show a first embodiment of a lifting staircase mechanism according to the present invention. 1 is a staircase, 2 upper floors
An appropriate number of steps 4 composed of rectangular parallelepiped blocks are erected and connected between the lower floor 3 and the lower floor 3 by means to be described later. This installation direction is defined as a front-rear direction with the upper floor as the front for convenience of explanation.

A pair of left and right fitting grooves 5 are formed on the rear surface of each step 4 so that the lower surface is closed and the upper surface opening is formed in the vertical direction.
A pair of right and left fitting projections 6 are provided to project from the upper front surface of each step, and the projections are fitted into the fitting grooves 5 so as to be vertically movable. The fitting groove 5 and the fitting protrusion 6 may be formed with a groove as shown in FIG. 4 or a T-shaped groove and a T-shaped protrusion as shown in FIG. May be formed. The uppermost step 4 fits its fitting projection 6 into a fitting groove formed on the floor of the upper floor 2 so as to be able to move up and down, and the lowermost step 4 fits into the fitting groove. A fitting projection projecting from the floor of the third floor is fitted to be vertically movable.

As shown in FIG. 10, a lifting device 10 is provided on the left and right side walls of the space below the stairs 1, and the left and right legs are movably engaged with a guide rail 12 obliquely upward. The table on which these two legs are suspended is mounted on a horizontal mounting table 13.
And an inclined plate 14 is projected obliquely downward and rearward from the rear end of the mounting table. The elevating device 10 normally mounts the plurality of steps 4 a to 4 d located at the middle part in the front-rear direction of the stairs on the mounting table 1.
3, these steps are formed on a flat landing, and the other steps except the landing are formed on an inclined step.

Next, the operation of the present embodiment will be described.
FIG. 1 shows a normal state in which the stairs 1 are not used for raising and lowering a vehicle such as a wheelchair (hereinafter, simply referred to as a wheelchair). The plurality of steps 4a to 4d located are supported, and these steps are used as a fixed landing section. In addition, in the inclined stairs except for the fixed landing portion, as shown in FIG. 2, the load of the adjacent rear step causes the fitting protrusion 6 to engage with the lower surface of the fitting groove 5 of the front step. Thus, it is supported by the front steps.

When the stairs 1 are used for raising the wheelchair 15, a use switch 16 provided on the lower floor 3 may be pressed, and a drive source such as a motor (not shown) is operated to lower the lifting device 10. . Due to the lowering of the lifting / lowering device, the steps 4a to 4d on the mounting table 13 start to move relative to the front in the horizontal direction (to the left in FIG. 1), and at the same time, the three steps 4a to 4c except for the last step 4d. , The movable landing section) starts to descend, and at the same time, the elevator 10
The step 4e located immediately before the traveling direction is raised by the inclined surface 14 and rides on the forefront of the mounting table 13, thereby forming a new movable landing section together with the other steps 4a to 4c on the mounting surface. The step 4d located at the rearmost part of the mounting table 13 relatively rises by the lowering of the lifting / lowering device 10 to form a step. When the lifting device 10 moves, the treads of the steps 4 always keep a horizontal state.

From the viewpoint of a pedestrian located at the movable landing, this step appears to have only the two steps 4d and 4e before and after the landing appearing to be slowly rising. Even if you start moving, you will not feel anxious. In addition, the only parts that actually move are the movable landing part and the steps before and after the movable landing part, and the movement is slow, so that there is no danger even if the pedestrian uses the stairs at the same time when the wheelchair goes up and down. In this way, when the movable landing part descends and reaches almost the same height as the lower three floors,
A sensor (not shown) detects this and stops the lifting device 10.

When the elevator 10 stops and the wheelchair 15 waiting on the lower floor 3 gets into the movable landing, and then presses the start switch 17 installed near the landing, the elevator 10 starts to ascend. . Then, as shown in FIG. 6, the movable landing portion starts moving upward while relatively moving horizontally (rightward in FIG. 6), and at the same time, the step 4 f located immediately before the traveling direction of the elevating device 10 relatively descends. Mounting table 13
A new movable landing section together with the other steps on the mounting surface, and the step 4a located at the rearmost part of the mounting table 13 is relatively lowered by the lifting device. Steps are formed. As described above, since the movable landing portion relatively moves rearward, the wheelchair is moved forward at a speed equal to that speed.

When the movable landing portion rises and reaches almost the same height as the floor of the upper floor 2, a sensor (not shown) detects this and stops the elevating device 10. Wheelchair 1 in this state
When the use switch 18 installed near the stairs is pressed after the 5 has exited from the movable landing to the upper floor 2, the elevator 10
Starts descending and reaches a middle part of the stairs, a sensor (not shown) detects this and stops the lifting device 10. In this position, the lifting device supports the stairway middle to form a fixed landing.

Conversely, when the wheelchair descends from the upper floor 2 to the lower floor 3, the use switch 18 may be pressed, and the elevating device 10 is raised, so that the movable landing section is substantially flush with the upper floor 2 floor. Stop when it reaches the same height. After the wheelchair enters the movable landing, when the start switch 19 installed near the landing is pressed, the elevating device 10 starts descending, and the landing reaches the same height as the lower three floors. Stop by the way. When the use switch 16 is pressed after the wheelchair has exited the landing, the elevator 10 rises to the middle of the stairs to form a fixed landing. After reaching the uppermost stage or the lowermost stage, the elevating device 10 uses the use switches 16, 1 and 2.
When the switch 8 is pressed, it moves to the middle stage, but when these switches are not pressed, it is located at the uppermost stage or the lowermost stage. Therefore, when using from this state, there is no need to press the use switch.

FIGS. 7 and 8 show a second embodiment of the lifting and lowering stair mechanism according to the present invention. In the present embodiment, the step 20 is formed not in a block shape but in an L-shaped cross section, and the upper and lower ends of the side surfaces of the pair of adjacent step steps 20a are connected by a pair of left and right parallel links 21 so that the tread surface is always Try to keep it level. An engagement plate 22 projects rearward from the lower end of the riser 20a, and the front end of the tread surface 20b of the adjacent rear step 20 can be engaged with the engagement plate. In addition, each of the uppermost and lowermost parallel links is connected to the floors of the upper and lower floors 2, 3. The other configuration is the same as that of the first embodiment, and the description is omitted.

The operation will be described in terms of differences from the first embodiment. In this embodiment, the steps 20 are connected by the parallel links 21.
The foremost parallel link 21 on the elevating device is swung upward by the inclined surface 14 from the inclined state to the horizontal state, and the rearmost parallel link is swung downward by the lowering of the mounting table 13. It moves and changes from a horizontal state to an inclined state, respectively, but in both cases, the tread descends while maintaining the horizontal state. When the rearmost parallel link 21 changes from the horizontal state to the inclined state, the tread surface 20b descends and its front end engages with the engagement plate 22, so that the parallel link 2
1 is restricted to an appropriate range.

FIGS. 9 to 11 show a third embodiment of the elevating and lowering stair mechanism according to the present invention. In the present embodiment, a pair of left and right laser sensors 25 are provided at both front and rear ends of the lifting device 10 so as to be able to detect above the steps 4 on the lifting device, and safety bars 27 are provided on both left and right columns 26 of the rear laser sensor. It is pivotally mounted so that it can swing freely in the horizontal direction. These are intended to prevent the wheelchair from falling backward when the wheelchair is slower than the elevating speed of the elevating device 10 for some reason, and the safety bar 27 alone is sufficient, but the safety bar has a problem. The laser sensor 25 is provided in consideration of the case.
The laser sensor stops the elevating device 10 by detecting that the front end of the wheelchair has deviated backward from the laser light of the front laser sensor or the rear end of the vehicle from the laser light of the rear laser sensor. .

The safety bar 27 is usually located along both side walls of the stairs 1. However, when the start switch 17 is pressed when the wheelchair is raised, the safety bar 27 is actuated and swings inward by about 90 ° so that the lifting device 10 It is installed at a position crossing the rear surface in the traveling direction.
After a sensor (not shown) detects the installation of this safety bar,
The lifting device 10 moves up. When the elevating device reaches the uppermost stage, a sensor (not shown) detects this and swings the safety bar 27 outward by about 90 ° to position it along the wall surface.

On the other hand, when the wheelchair descends, unlike the above, the safety bar 27 is installed before the wheelchair gets in, and if the wheelchair is not confirmed, the entry is prohibited. This is performed, for example, as follows. By pressing the use switch 18 on the upper floor 2, the elevating device 10 is moved to the uppermost stage. This is detected by a sensor (not shown), and the safety bar 27 is installed. Thereafter, a sign that allows entry into the landing area is displayed by display means such as a lamp. In this case, after getting in, the start switch 19 is pressed.

[0026]

According to the first aspect of the present invention, the steps are vertically connected and the elevator is installed in the space below the steps so that the landing can be moved up and down. Unlike the moving conventional example, there is no danger of the transport table coming into contact with the pedestrian, and therefore, there is no need for a specialized person for performing safety checks, operations, and the like during use. In addition, when the vehicle moves up and down, the landing section only moves up and down, so that the pedestrian can use the stairs at the same time, so that the pedestrian's walking is not hindered.

On the other hand, since the walking of the pedestrian is not hindered, the wheelchair user can easily go up and down the stairs, and does not need any special staff or caregiver. It is possible to increase the range of activities of wheelchair users who are expected to increase. Furthermore, since it is a step type, there is no need to provide an endless roller chain unlike the escalator type, so that the configuration can be simplified and the space can be saved.

According to the second aspect of the present invention, the stairs can be formed only by steps having the same shape, so that the cost can be reduced together with the simplification of the construction.

According to the third aspect of the present invention, since the parallel links are used, the weight of the steps can be reduced.

According to the fourth aspect of the present invention, since the vehicle has means for preventing the vehicle from falling, it is possible to prevent an unexpected situation such as the vehicle from falling.

[Brief description of the drawings]

FIG. 1 is a schematic view of a lifting and lowering stair mechanism according to a first embodiment of the present invention as viewed from the left and right directions.

FIG. 2 is also a schematic view of a staircase.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a cross-sectional view showing a connected state of steps.

FIG. 5 is a sectional view showing a modification of FIG. 4;

FIG. 6 is an explanatory view of the operation.

FIG. 7 is a view corresponding to FIG. 1, showing a second embodiment.

FIG. 8 is a schematic diagram showing a state in which a left parallel link is removed from a step.

FIG. 9 is a view corresponding to FIG. 1, showing a third embodiment.

FIG. 10 is a schematic view of a main part similarly viewed from the rear.

FIG. 11 is a transverse sectional view showing a main part of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Stair 10 Elevating device 2 Upper floor 25 Vehicle fall prevention means 3 Lower floor 4 Steps

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoko Kobayashi, Inventor Minako Kobayashi, 8-21-1, Ginza, Chuo-ku, Tokyo F-term (reference) 2E101 BB00 CC01 DD31 3F321 AA04 AA05 BA03 CB33

Claims (4)

[Claims] 1. A guide rail (12) which is erected between the upper two floors and the lower three floors and then obliquely upwards and has legs on its lower surface slidably engaged with the guide rails. An elevator 10 formed by a horizontal mounting table 13 and an adjacent step 4 that is installed between an upper floor and a lower floor
A staircase 1 for connecting a plurality of steps in the middle part on a horizontal mounting table 13 of the elevating device so as to form a flat landing section, wherein the steps are moved up and down. By raising and lowering the device 10, the upper and lower floors 2,
The landing section is provided so as to be able to move up and down freely, and the landing section is substantially the same height as the lower floor 3 when the elevator 10 is located at the lower section of the stairs 1, and the upper floor 2 when it is located at the upper section. An ascending / descending stair mechanism, wherein entry / exit surfaces for vehicles having substantially the same height as the floor surface are formed. 2. Adjacent steps are vertically provided with a fitting groove 5 having a lower surface closed on one step in a vertical direction, and a connecting projection 6 is projected from the other step to fit the projection. 2. The elevating and lowering stair mechanism according to claim 1, wherein the ascending and descending stair mechanism is fitted and connected in the mating groove so as to be vertically movable. 3. The elevating stair mechanism according to claim 1, wherein the adjacent steps are connected to each other by a parallel link 21 so that the tread surface can always maintain a horizontal plane. 4. The vehicle according to claim 1, wherein said lifting device is provided with vehicle falling prevention means for detecting that the vehicle on the landing is slower than the relative speed of the landing and stopping the lifting device. 1. The elevating stair mechanism according to 1.