JPH0735148B2 - Double-decker bus - Google Patents

Description

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

<A-2> Related Art A staircase in this type of bus is composed of a stair side plate, a step and a step plate, and the step plate is fixed to the step and the stair side plate and provided horizontally.

<A-3> Problems with conventional technology Among passengers on double-decker buses, especially passengers on the second floor are forced to go up and down narrow stairs when moving up and down, but some passengers may be seated. Some are standing. In addition, it is common for passengers to take a long time on a sightseeing bus that can only accommodate passengers, and even if they are always seated, fatigue from the lower legs to the waist is serious, especially if the passenger is an elderly person. Is large. Further, the stairs of this type of bus are generally narrow in width due to the structure of the vehicle and have a steep elevation angle (inclination). Therefore, in addition to leg fatigue, it is inconvenient to ascend and descend, and passengers must pay particular attention to their feet when ascending and descending.

<4-4> Technical Problem to be Solved by the Invention Conventional stair treads are provided horizontally and fixedly to the surface of the earth. Therefore, when descending, the weight of the stairs is directly applied to the tired legs, and when climbing, There is the problem of having to increase the amount of pressure on the foot to increase the weight, which results in more and more foot fatigue (at least not alleviating foot fatigue at all). ). Therefore, passengers often stagger their feet or step off the stairs, especially when they descend the stairs.

In view of the above, the present invention provides a cushioning mechanism that assists the ascending stepping force applied to the foot when climbing the stairs and absorbs some of the weight applied to the foot when descending the stairs so that the passengers can easily move up and down. To do.

(B) Constitution of the Invention (B-1) Means for Solving the Problems The present invention has been described above, and particularly, during the elevating stairs of a double-decker bus, the step plate is separated from the fixing structure of the side plate and the step of the stairs. None, in the footboard of the ascending stairs, a spring mechanism is configured on the front rear surface of the tread, and the rear part is configured to rotate at the top of the stepping and not to be separated from the top. Constitutes a spring mechanism,
The front part is structured so that it rotates at the top of the step and does not separate from the top, and elastic force is applied to the front part of the foot when climbing the stairs and to the heel of the foot when descending the stairs. is doing.

(B-2) Operation When the stairs are configured as described above, when the stairs are climbed up, the weight applied to the foot and the rising stepping force act on the spring provided on the front rear surface of the tread to cause the springs. The front part of the tread descends by the compression interval. At this time, the tread plate rotates downward at the stepping top. Therefore, the spring of the tread is inclined in the upward direction by the compressed length.

When the foot is separated from the stairs to step on the next stair, the upward elastic force of the spring acts on the front part of the foot, and the user can easily step on the next stair. When descending the stairs, the weight of the tread causes the rear part of the tread to be tilted backward by that amount due to the compression of the spring. When stepping down to the next step, the elastic force of the spring acts upward on the heel of the foot, so that the foot can be easily lowered. Also at this time, the front part of the tread rotates at the top of the tread in conjunction with the expansion and contraction of the spring.

(B-3) Example Next, an example will be described with reference to the drawings.

FIG. 1 (A) is a plane explanatory view of the stairs of the present invention, and FIG. 1 (B) is a longitudinal sectional view showing the structure of the stairs.
In the stairs, stepping on (2) the both side plates (1) and the both side plates (1) at a constant interval is hung on the supporting back plate (3) of the stairs
In the present embodiment, the top of the step (2) is formed as an inverted corrugated concave portion, while the tread (4) is formed such that one of its long sides is a downward corrugated convex, and the step ( The wavy convex portion of the tread (4) can be pivotally attached to the reverse wave concave portion of 2).

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

Next, regarding a spring mechanism, this mechanism is composed of a spring receiving plate (6), a rubber spring (5) and a tread receiving plate (7), and the spring receiving plate (6) is a side plate (1).
It is laterally provided between (1) and is fixed to the support back plate (3) via a pedestal (8) for horizontally fixing the receiving plate (6). A plurality of rubber springs (5) are mounted on this pedestal, and a tread support plate (7) is mounted on the top of the springs (5).
Is attached so that the rubber spring (5) moves up and down at the same time as the rubber spring (5) expands and contracts. The back surface of the tread (4) is always in contact with the tread receiving plate (7). In this spring mechanism, the spring is not limited to the rubber spring, but may be a spiral spring, a leaf spring or any other elastic body, and the contact means between the elastic body (spring) and the tread (4) and the elastic body (spring). Any means other than the present embodiment may be adopted as a means for vertically arranging the above on the supporting back plate (3). Further, the rotating means of the step board (4) at the top of the stepping (2) may be any one such as shaft attachment or butterfly attachment, and the means is not limited.

Since the staircase in this embodiment has the above-mentioned structure, when the staircase is UP and DN, the spring expands and contracts due to the weight and the stepping force of the foot, and at that time, the tread (4) is the spring at the top of the step (2). Rotate by the amount of expansion and contraction.

(C) Effects of the Invention Since the present invention has the above-described configuration and operation, when the stairs are climbed up, the elastic force of the spring is applied to the front part of the foot as an up force, so that the stairs can be easily lifted. You can climb up, and when you go down the stairs, you can easily get down with the effect of absorbing the weight of your foot, especially in the heel part, by the contracting action of the spring, and considerably relaxing the impact on the entire foot .

In addition, when climbing stairs, the stairs of this type of vehicle are always installed narrowly and steeply because of its structure, and it may be difficult to climb because of the feeling that the body will be caught at the time of climbing, and sometimes it may fall behind. In the stairs of the present invention, since the tread (4) leans forward by the amount of contraction of the spring, the body also leans forward (posture), and there is no danger of ascending, and it is easy to climb the stairs in combination with the upward elastic force of the spring. it can.

Also, when descending, the footboard (4) inclines in the opposite direction to the descending direction, that is, backward, so that the body has a certain backward inclination posture, and due to fatigue of the feet, etc. It has a great advantage that it can be prevented from falling forward or falling down, and that the foot that goes down the stairs becomes extremely light in combination with the rising elasticity of the spring applied to the heel. In particular, the above effects can be said to be remarkable in long-distance double-decker buses.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 (A) is a plan explanatory view with a part of a tread removed, and FIG. 1 (B) is a sectional explanatory view showing a staircase structure. FIG. 6C is a cross-sectional explanatory diagram in which the spring is a spiral spring. FIG. 2 is a schematic side view of the double-decker bus. (1) ...... Both side plates (2) ...... Step down (3) ...... Support back plate (4) ...... Step plate (5) ...... Rubber spring (5 ') ...... Spiral spring (6) ...... Spring receiving plate (7) …… Tread support plate (8) …… Pedestal (9) …… Double-decker bus

Claims (3)

[Claims] Claims: 1. In a double-decker bus elevating staircase, a spring mechanism is provided at the front rear surface of the ascending stairs and at the rear rear surface of the descending stairs to provide a spring mechanism for the ascending stairs. The rear part and the front part of the descending stair tread shall be rotatable in conjunction with the operation of the spring mechanism, and elastic force shall be applied to the front part of the foot when climbing the stairs and to the heel of the foot when descending the stairs. A double-decker bus with a staircase that is characterized by being configured as described below. 2. A double-decker bus having elevating stairs according to claim 1, wherein a rubber spring is used as the elastic body. 3. A double-decker bus having elevating stairs according to claim 1, wherein a spiral spring is used as the elastic body.