JP2000129892A - Step difference correction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the careless rotation when load is applied to the inclined plane of a step difference correction device, and to make smooth traffic even if a position of the front height of the inclined plane is shifted in the vertical direction to an upper step surface. SOLUTION: An erected surface section 15 is provided to the front of the bottom surface section 11 contacted to a lower step surface F1 and, at the same time, the inclined plane section 16 is provided between the upper part of the erected surface section 15 and the rear side of the bottom surface section 11. The erected surface section 15 is extended at approximately 85 deg. to the bottom surface section 11, and a cross area of the erected surface section 15 and inclined plane section 16 is constituted as a circular arc surface 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level difference correcting device, and more particularly, to a level difference between inside and outside passages of a building.
The present invention relates to a level difference correction device capable of smoothly moving a level difference between a passage and a room.

[0002]

2. Description of the Related Art In general, there are many cases where a step is provided between a floor and a sill or a door lower frame for each room in a building. Such a step may make it difficult for a physically handicapped person or the elderly to pass. In addition, in the case of using a wheelchair to pass over a step, depending on the height difference, it is often impossible to get on the upper step from the lower step.
On the other hand, even for a healthy person without any obstacle, the room may be dark, or the person may inadvertently trip on a step, and may be injured unexpectedly.

In view of the above, there has been conventionally proposed a step correction device capable of connecting a lower step surface and an upper step surface forming a step with a gentle slope. As shown in FIG. 6, for example, as shown in FIG. 6, a bottom surface portion 50 that contacts the lower surface F1 and an upright surface portion 52 that is located on the side of the step forming surface F3 that forms the upper surface F2. A configuration is known which includes an inclined surface portion 53 extending between an upper portion of the upright surface portion 52 and a rear portion of the bottom surface portion 50, and having a gentle curved surface shape following the peripheral surface shape of a wheel or the like.

As another level difference correcting device, there is provided a bottom portion, a rising portion connected to a front end thereof and rising in a direction perpendicular to the bottom portion, and a portion between an upper portion of the rising portion and a rear portion of the bottom portion. Is also known which forms an isosceles triangle when viewed from the side end face with the inclined surface portion located at the side.

[0005]

However, in the former device for correcting a level difference, the upper portion of the upright surface portion 52 is formed as a curved surface that gradually projects toward the upper level surface F2 from the lower portion thereof. If the level difference correcting device is set in a state where there is a gap S between the surface F3 and the load F is applied to the front upper surface of the inclined surface portion 53, the level difference correcting device is set to the lower end of the upright surface portion 52. Inconvenience of rotation in the direction of arrow A about the position P is caused. This is because the load F acts on the vertical line C passing through the point P at a position closer to the step forming surface F3.

Further, in the latter step difference correcting device, when the user wants to go back and forth in a wheelchair by applying a type in which the front end height position of the upright surface portion is shifted up or down with respect to the upper step surface height position. Inconvenience manifests. That is, in the boundary region between the front end of the inclined surface portion of the step difference correction device and the upper step surface, the center trajectory of the wheel appears more than the height deviation, which increases the riding resistance of the wheel or causes a large head drop. In addition to the above, the operability of the wheelchair is deteriorated, and the ride comfort is significantly reduced.

[0007]

SUMMARY OF THE INVENTION The present invention was devised in view of such inconvenience, and its object is to prevent inadvertent rotation when a load is applied to an inclined surface to improve safety. An object of the present invention is to provide a step correction device that can be improved.

Another object of the present invention is to provide a versatile level difference correcting device which can smoothly move even if the front height position of the inclined surface portion is slightly shifted in the vertical direction with respect to the upper level surface. Is to do.

[0009]

In order to achieve the above-mentioned object, the present invention is directed to a method for manufacturing a vehicle, comprising a step disposed between a lower step surface and an upper step surface along a step forming surface between the lower step surface and the upper step surface. In the step correction device that is connected with the bottom step, a bottom surface grounded to the lower step surface, an upright surface portion that is provided in front of the bottom surface portion and is located on the step forming surface side, and an upper portion of the upright surface portion and the bottom surface portion. An inclined surface portion extending between the rear surface portion and the upright surface portion, and the upright surface portion has a configuration in which an upper portion extends in a direction gradually separated from the step forming surface. According to such a configuration, for example, when trying to go back and forth in a wheelchair, even if there is a deviation between the height position of the front end of the inclined surface portion and the height position of the upper surface, a step greater than the deviation is given to the wheel. Smooth rolling can be allowed without any problem. Further, even when the upright surface portion is located at a position away from the step forming surface, the lower end of the upright surface portion is located slightly forward with respect to the front end position of the inclined surface portion, that is, from a vertical line passing through the lower end of the upright surface portion. Also, since the load does not act directly on the step forming surface side at all,
As described above, there is no possibility that the rear portion of the step correction device rotates upward.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, it is preferable that an intersecting region between the upright surface and the inclined surface is formed in an arcuate surface. Thereby, since the highest position of the inclined surface portion can be set to a position closer to the near side than the virtual extension line along the inclination direction of the upright surface portion, the highest position of the inclined surface portion does not completely match the height position of the upper step surface Even in the state, smooth traffic can be realized.

It is also preferable to employ a configuration in which the inclination angle between the bottom surface and the upright surface is set to approximately 85 degrees. According to such a configuration, it is possible to avoid such a problem that an extremely large gap is formed between the upright surface portion and the step forming surface even when the upright surface portion is inclined.

In the present specification, the "front" of the step correcting device is used for a side located on the side of the step forming surface, while the "rear" is used for a near side away from the step forming surface.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view of a step correction device according to the present embodiment, and FIG. 2 is a side sectional view thereof. In these figures, the level difference correcting device 10 is arranged along a level difference forming surface F3 between a lower level surface F1 and an upper level surface F2. Although the level difference correction device 10 is not particularly limited, in the present embodiment, the level difference correction device 10 is constituted by an integrally molded product using an ABS resin as a molding material. The bottom surface portion 11 of the level difference correcting device 10 is a flat surface substantially parallel to the surface of the lower surface surface F1, and the bottom surface portion 11 is fixed to the lower surface surface F1 via double-sided adhesive tapes 13 provided at two front and rear portions. It is provided as possible. On the bottom surface portion 11, an upright surface portion 15 is continuously provided at a front portion on the side of the step forming surface F3, and between the upper portion of the upright surface portion 15 and the rear portion of the bottom surface portion 11, a lower step surface F1 and an upper step surface F2. Slope part 1 that connects gently with
6 are provided. A hole 17 is formed in the center of the level difference correcting device 10 so as to penetrate the level difference correcting device 10 in the left-right direction. This hole 17 reduces the molding material and reduces the weight of the level difference correcting device 10 as a whole. It has become.

The upright surface portion 15 is oriented in an inclined direction such that the intersection angle α with the bottom surface portion 11 is approximately 85 degrees, and the step correction device 10 is operated in a state where the lower end of the upright surface portion 15 is in contact with the step forming surface F3. When set, the upper part is gradually separated from the step forming surface F3 to form a slight gap S. The upper part of the upright surface 15 and the inclined surface 1
6 is formed as an arcuate surface 18 at the intersection with the front part.

A wavy portion 19 having a small difference in height is formed on the inclined surface portion 16 along the left-right direction at the center thereof, and the wavy portion 19 provides a certain slip resistance while allowing smooth traffic. You. In addition, instead of the wavy portion 19,
Appropriate projections or the like may be provided at a plurality of locations to achieve slip prevention.

Next, the operation of the step correcting device 10 according to the present embodiment is shown together with a comparative example corresponding to the conventional device in FIG.
This will be described with reference to FIG. Note that, for convenience of explanation, the same reference numerals are used for the substantially same parts as those of the present example in the comparative example.

FIGS. 3A and 3B show a state in which the wheel W having the same diameter rolls in a state where there is a difference L1 in which the maximum height position of the inclined surface portion 16 is slightly lower than the height of the upper step surface F2. 4 (A) and 4 (B) show the trajectory of the inclined surface 1.
6 shows a state where there is a difference L1 in which the maximum height position of No. 6 is higher than the height of the upper step surface F2.

As shown in FIG. 3A, in the conventional apparatus, the wheel W1 is located at a position where the wheel W1 is in contact with the intersection of the inclined surface portion 16, the upper step surface F2 and the step forming surface F3.
Is larger than the height difference L1 between the front end of the inclined surface portion 16 and the upper step surface F2. On the other hand, as shown in FIG. 3B, the center point P1 of the wheel W1 and the center point P1 of the wheel W2 under the same conditions in the present embodiment.
The difference L3 from the upper surface F2 corresponds to the difference L1 between the maximum height position of the inclined surface 16 and the upper surface F2. That is, in the conventional device, the upright surface portion 15 rises in a direction orthogonal to the bottom surface portion 11 and the upright surface portion 15 and the inclined surface portion 16 intersect at an acute angle, so that the wheel W1 is located at the highest position of the inclined surface portion 16. By riding on the upper step surface F2 at a position on the near side where no contact occurs, a step larger than the difference L2 described above must be overcome. On the other hand, in the level difference correcting device 10 according to the present embodiment, the upright surface portion 15 is provided at an inclination angle of approximately 85 degrees and the arc-shaped surface 18 is formed.
In the state where the wheel W reaches the highest position, the vehicle can ride on the upper step surface F2, and the wheel W can be rolled along the natural inclination direction without exceeding the difference L2.

As shown in FIGS. 4A and 4B, in the conventional apparatus, the difference L2 between the center point P1 of the wheel W1 and the center point P2 of the wheel W2 is determined by the maximum height of the inclined surface portion 16. Although it matches the difference L1 between the position and the upper surface F2, the wheels must be rapidly displaced vertically. On the other hand, in the present embodiment, the difference L3 between the respective center points P1 and P2 of the wheels W1 and W2 is determined by the above-described angle setting and the interaction of the arcuate surface 18 with the difference between the inclined surface portion 16 and the upper step surface F2. Even if L1 coincides with that of the conventional device, the wheels are displaced in the vertical direction over a longer span in the lateral direction than in the conventional device, so that the impact when climbing over the step is reduced.

Thus, it is clearly demonstrated that the level difference correcting device 10 according to the present embodiment enables relatively smooth traffic as compared with the conventional level difference correcting device. According to this, the present invention can be applied without difficulty to a step region where the maximum height position of the inclined surface portion 16 in the step correction device 10 does not match the height position of the upper step surface F2. Is obtained.

As shown in FIG. 5, the level difference correcting device 10 of this embodiment is capable of applying a load applied to the front portion of the inclined surface portion 16 even if the standing surface portion 15 is separated from the step forming surface F3 for some reason. F does not cause the rear side of the step correction device 10 to rotate. This is because the center point P when the level difference correcting device 10 is rotated by the load F, that is, the lower end of the upright surface portion 15 is located ahead of the action point by the above-described inclination angle.

Note that the level difference correcting device 10 according to the present invention
As long as the inclined structure of the upright surface portion 15 is the same or equivalent, a plurality of types having different overall sizes are included. In addition, the inclination angle of the upright surface portion 15 is not limited to 85 degrees, and the angle can be set small so that no extreme gap is formed with respect to the step forming surface F3, and the curvature of the arc-shaped surface 18 is increased. Thus, it can be set to 85 degrees or more. Further, the upright surface portion 15 may have an upper portion that is gradually separated from the step forming surface, and may include one that gradually extends in a curved direction.

[0024]

As described above, according to the present invention,
Since the upper portion of the upright surface portion is configured to extend in an inclined direction gradually separated from the step forming surface, particularly when trying to move in a wheelchair, the height of the front end height position of the inclined surface portion and the height of the upper step surface. Even if the position is displaced, smooth rolling can be permitted without giving a step larger than the deviation to the wheel. In addition, even when the upright surface portion is at a position away from the step forming surface, the lower end of the upright surface portion is located slightly forward with respect to the front end position of the inclined surface portion, so that the rear portion of the step correction device rotates upward. This can be prevented beforehand.

Further, according to the configuration in which the intersecting region between the upright surface and the inclined surface is an arc-shaped surface, the highest position of the inclined surface is located at a position closer to the near side than the virtual extension line along the inclination direction of the upright surface. Since the setting can be performed, smooth traffic can be realized even in a state where the highest position of the inclined surface portion does not completely coincide with the height position of the upper surface.

Further, in the configuration in which the inclination angle between the bottom surface portion and the upright surface portion is set to approximately 85 degrees, it is possible to avoid such a problem that an extreme gap is formed between the step portion and the step forming surface.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an application example of a level difference correction device according to an embodiment.

FIG. 2 is an enlarged side sectional view of the step difference correction device.

FIG. 3 is an operation explanatory view of the embodiment apparatus shown using the comparative example.

FIG. 4 is an explanatory diagram of an operation of the embodiment apparatus shown using the comparative example.

FIG. 5 is a side view showing a rotation restricting operation of the embodiment device.

FIG. 6 is a side view showing an example of a conventional step correction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Step correction apparatus 11 Bottom part 15 Standing surface part 16 Inclined surface part 18 Arc-shaped surface F1 Lower step surface F2 Upper step surface F3 Step forming surface

Claims (3)

[Claims] 1. A step correction device arranged at a position along a step forming surface between a lower step surface and an upper step surface and connecting the lower step surface and the upper step surface with an inclined surface, wherein a bottom portion grounded to the lower step surface An upright surface portion that is provided on the side of the step forming surface and that is connected to a front portion of the bottom surface portion, and an inclined surface portion that extends between an upper portion of the upright surface portion and a rear portion of the bottom surface portion. Is a step correction device, wherein an upper portion extends in a direction gradually separated from the step forming surface. 2. The step correction device according to claim 1, wherein an intersection area between the upright surface and the inclined surface is formed in an arcuate surface. 3. The step correction device according to claim 1, wherein an intersection angle between the bottom surface portion and the upright surface portion is set to approximately 85 degrees.