JPH02306884A - Double deck bus - Google Patents

Abstract

PURPOSE:To facilitate the ascent/descent of the stairs by applying elastic force to the front part of a foot at the time of ascending the stairs and to the heel at the time of descending the stairs by a spring mechanism provided at the rear face part of a foot plate, thus providing ascending steeping-in force or absorbing the body weight. CONSTITUTION:At the time of ascending the stairs, a rubber spring 5 provided at the front rear face part of a foot plate 4 is compressed by the body weight applied to the foot and ascending stepping-in force, and the front part of the foot plate 4 is lowered and inclined by the compressed space. When the foot is detached from the stair in order to step onto the following stair, the upward elastic force of the rubber spring 5 works on the front part of the foot so as to enable easy ascent onto the following stair. At the time of descending the stairs, the rubber spring 5 is compressed by the body weight applied to the foot plate 4, and the foot plate 4 is inclined backward. At the time of stepping down onto the following stair, the elastic force of the rubber spring 5 works upward on the heel of the foot so as to step the foot down easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Object of the Invention <A-1> Industrial Field of Application The present invention relates to an improvement of stairs in a double-decker bus.

<A-2> Regarding the prior art The stairs in this type of bus consist of one stair side plate, a tread, and a tread, and the tread is fixed to the tread and the stair side plate and is provided horizontally.

<A-3> Problems with conventional technology Passengers on a double-decker bus, especially those on the second floor, are forced to climb narrow stairs to get up and down, although some of them may be seated. Some are standing still. In addition, it is common to ride for a long time on sightseeing buses, etc., which carry only the maximum number of passengers, and even if you are always seated, the legs from the waist down can be extremely fatigued, especially if the passengers are elderly. It's large. Furthermore, the stairs of this type of bus are generally narrow due to the structure of the vehicle, and the angle of elevation (inclination) is steep. Therefore, in addition to leg fatigue, it is inconvenient to go up and down, and passengers must be especially careful about their feet when going up and down.

<A-4> Technical problem to be solved by the invention Conventional stair treads are installed horizontally and fixedly to the ground surface, so when going down, the weight is directly on the tired feet, and when going up, the weight is directly on the tired feet. The problem is that you have to increase the stepping force to increase the weight on your feet, which results in even more fatigue in your feet (at least not in the slightest). Therefore, passengers often unsteady on their feet or miss their step, especially when descending stairs.

In view of the above, the present invention provides a cushioning mechanism that assists the upward stepping force applied to the feet when ascending the stairs, and absorbs some of the weight applied to the feet when descending the stairs, thereby making it easier for passengers to ascend and descend the stairs. It is something to do.

(B) Structure of the Invention (B-1) Means for Solving the Problems In view of the above, the present invention provides a structure for separating the treads from the fixed structure between the side panels of the stairs and the treads in the ascending/descending stairs of a double-decker bus. None, on the treads of the ascending stairs, a spring mechanism is constructed on the front back surface of the tread, and the rear part is configured so that it rotates at the top of the tread and does not separate from the top, and on the descending stairs, the spring mechanism is constructed on the back surface of the front part of the tread. It consists of a spring mechanism, and the front part rotates at the top of the step and is configured so that it does not separate from the top. Elastic force is applied to the front of the foot when going up stairs, and to the heel when going down stairs. It is configured so that it can be added.

(B-2) Regarding the action When the stairs are configured as described above, when climbing the stairs, the weight applied to the feet and the upward stepping force act on the spring provided on the front back of the tread, causing the spring to rise. is compressed, and the front of the treadle descends by the amount of compression. At this time, the treadle rotates downward at the top of the step. Therefore, the treadle is inclined in the upward direction by the length of the compressed spring.

When you take your foot off the stairway to step on the next stairway, the upward elastic force of the spring acts on the front of your foot, allowing you to easily step up to the next stairway.6 When you descend the stairs, your weight is applied to the tread. As a result, the rear part of the treadle descends due to the compression of the spring, and the treadle inclines rearward. When stepping down to the next staircase, the elastic force of the spring acts upward on the heel of the foot, allowing the user to step down the stairs with ease. At this time as well, the front part of the footboard rotates in conjunction with the expansion and contraction of the spring at the top of the foot.

(B-3) Regarding examples Next, embodiments will be described according to the drawings.

Figure 1 (A) is a plan view of the staircase of the present invention, and Figure 1 (B)
is a vertical cross-sectional explanation showing the structure of a staircase.One staircase has both side plates (1) with a certain interval between them, and the steps (2) are suspended from the support back plate (3) of the stairs. Set this step (
In this embodiment, the top portion of 2) is formed with a reverse waveform. The tread plate (4) is configured such that one of its long sides is formed into a downward wavy shape so that it can be fitted into the reverse wavy shape of the top of the tread (2) and attached to the bogie.

The back surface of the other long side of the tread plate (4) is in close contact with a tread plate receiving plate (7) of a spring mechanism which will be described below.

Next is the spring mechanism. This mechanism is composed of a spring receiving plate (6), a rubber spring (5), and a foot plate receiving plate (7). The spring receiving plate (6) is connected to the side plates (1) (
1) is placed horizontally between them and is fixed to the supporting back plate (3). (8) is a pedestal for horizontally fixing the spring receiving plate (6). A plurality of rubber springs (5) are mounted on this pedestal, and a tread plate (7) is mounted on the top of the spring (5).
is in contact so that it moves up and down at the same time as the rubber spring (5) extends and contracts up and down. The back surface of the treadle (4) is always in contact with the treadle plate (7).

In this spring mechanism, the spring is not limited to a rubber spring, but may be a helical spring, a plate spring, or any other elastic body. Any means other than this embodiment may be used for erecting the support back plate (3). Further, the means for rotating the footboard (4) at the top of the footstep (2) may be either pivoted or hinged, and the means is not limited.

Since the stairs in this embodiment have the above-described configuration, when going up and down the stairs, the spring expands and contracts depending on the body weight and the stepping force of the foot, and at the top of the step (2), the tread (4) is moved by the spring. It rotates by the amount of expansion and contraction.

(C) Effects of the Invention Since the present invention has the structure and operation described above, when climbing stairs, the elastic force of the spring is applied to the front part of the foot as a lifting force, so that it is easier to climb the stairs. You can go up a flight of stairs, and when you go down a flight of stairs, the spring's contraction action absorbs a considerable amount of the weight on your feet, especially at the heel, and the shock applied to the entire foot is considerably reduced, making it easy to go down. .

Also, when climbing stairs, the stairs in this type of vehicle are always narrow and steeply sloping, making it difficult to climb as you feel like your body is being dragged backwards, and sometimes you end up falling down. , in the staircase of the present invention, the tread (
4) leans forward by the amount of contraction of the spring, so the body also leans forward (posture), and in combination with the upward elastic force of the 5 spring, the person can easily climb the stairs without any danger.

Also, when descending the stairs, the tread (4) tilts in the opposite direction to the direction of descent, that is, backwards, causing the body to tilt backwards, which is a common experience when descending a flight of stairs due to fatigue in one leg. It also prevents the user from falling forward or about to fall, and when combined with the upward elasticity of the spring applied to the heel, the user can walk down the stairs with great ease. It can be said that the effects described above are particularly noticeable in long-distance double-deck buses.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1(A) is an explanatory plan view with the treads partially removed, and FIG. 1(B) is an explanatory cross-sectional view showing the structure of the stairs. (C) is a cross-sectional explanatory view in which the spring is a helical spring. Figure 2 is a schematic side view of the Nikaidaru bus. (1)・・・・・・Both side plates (2)・・・・・・・・・Press-in (3)・・・・・・Support back plate (4)・・・・・・...Tread plate (7)...Tread plate receiving plate (8)...Pedestal

Claims (3)

[Claims] (1) In the ascending/descending stairs of a double-decker bus, a spring mechanism is provided on the front back surface of the tread for the ascending staircase tread, and a spring mechanism is provided on the rear back surface of the tread for the descending staircase tread. The front part of the descending stair tread is made to be able to rotate in conjunction with the operation of the spring mechanism, so that elastic force is applied to the front part of the foot when going up the stairs, and to the heel of the foot when going down the stairs. A double-decker bus with ascending and descending stairs. (2) A double-decker bus having ascending/descending stairs according to claim (1), wherein a rubber spring is used as the elastic body. (3) A double-decker bus having an ascending/descending staircase according to claim 1, wherein a helical spring is used as the elastic body.