JPS6232909Y2 - - Google Patents

Description

[Detailed description of the invention] In some cases, a seat for a guide or a tour conductor is provided after the entrance/exit step in a shared bus. Conventionally, this type of seat has the disadvantage that it is dangerous because the floor is sunken because it is located above the steps, and there is no place to put your feet.

The purpose of the present invention is to eliminate these drawbacks of conventional seats.

The gist of the present invention is to have a seat whose rear end is pivoted to the body at an upper point and positioned almost horizontally, and whose front end is extended below the seat to the front of the seat and positioned almost horizontally. The rear end of the step is pivoted to the body at the lower point below the upper point, and the upper end is pivoted to the front of the seat at the front upper point, and the lower end of the front rod extended downward is connected to the front lower point. The upper end is pivoted to the middle of the step by the step point, the upper end is pivoted to the step in front of the lower point by the step point, and the lower end is pivoted to the body by the body point. The lower point is placed approximately at each vertex of a parallelogram.

The configuration of the present invention will be explained below with reference to drawings of embodiments of the present invention.

First, we will explain the correspondence between the symbols on the drawing and the names of their parts. 1 is the body, 2 is the upper point, 3 is the counter,
4 is a step, 5 is a lower point, 6 is a front upper point, 7 is a front rod, 8 is a front lower point, 9 is a step point, 10 is a body point, and 11 is a telescopic cylinder.

The rear end is provided with a seat 3 which is pivotally connected to the body 1 at an upper point 2 and positioned substantially horizontally. The body 1 is a suitable part of the vehicle body. The structure of the seat 3 may be any suitable one. A step 4 is provided below the seat 3, the front end of which is extended to the lower front of the seat 3 and positioned substantially horizontally. The distance between the seat 3 and the step 4 should be such that the front end of the step 4 can conveniently support the foot. The rear end of the step 4 is pivotally connected to the body 1 by the lower end 5 below the upper end 2.

The upper end of the front rod is pivotally connected to the front part of the seat 3 by a front upper point 6, and the lower end of the downwardly extended front rod is pivotally connected to the middle of the step 4 by a front lower point 8.

The upper point 2, the front upper point 6, the front lower point 8, and the lower point 5 are positioned at each vertex of approximately one parallelogram.
In the figure, this parallelogram is a rectangle.

The upper end is the step point 9 and the lower point 5 is the step 4.
It is pivoted forward of the body and the lower end is the body point 10.
A vertically extendable tube 1 pivotally connected to the body 1 by
1. The distance between the step point 9 and the lower point 5 is appropriate, but structurally the step point 9 is between the lower point 5 and the front lower point 8, and as shown in the figure, the step point 9 is between the lower point 5 and the lower point 5.
It's better to stay in the direction of.

The telescoping tube 11 is, for example, a gas-filled lifter that can be expanded and contracted by gas pressure, and any known type can be used.

Since the present invention has such a configuration, its functions are as follows.

FIG. 1 shows the unfolded state in which it can be used as a seat.

The length of the telescopic tube 11 is fixed in this state. Since the fixing operation is well known, its explanation will be omitted. In this state, the distance between the step point 9 and the body point 9 is fixed. Since the rear end of the step 4 is fixed by the lower point 5 and supported by the fixed point 9 in front of the lower point 5, the step 4 cannot be pivoted downward. Therefore, it is possible to place one's feet on the front end of the step 4 extending forward and below the seat 3, and also to stand on it.
Step 4 performs the function of a step.

The downward rotation of the seat 3 around the upper point 2 is supported by the front lower point 8 of the fixed step 4 through the front rod 7, so the seat 3 can support the load from above. It serves as a cushion.

FIG. 2 shows the folded state.

The operation of moving from the unfolded state shown in FIG. 1 to the folded state shown in FIG. 2 will be explained.

The telescopic cylinder 11 is brought into a free state.

When the seat 3 is rotated upward around the upper point 2, the step 4 is pulled by the front rod 7 and rotated upward around the lower point 5. Upper point 2 Front upper point 6 Front lower point 8 Lower point 5 is the vertex of the parallelogram, so during rotation, seat 3 and step 4 are always parallel,
Further, the body 1 between the upper point 2 and the lower point 5, that is, the body between the upper point 2 and the lower point 5, and the front rod 7 are parallel to each other. Therefore, if the rotation is performed sufficiently, it is possible to reach a state where the seat 3, step 4, front rod 7, upper point 2, lower point 5 and the body are almost parallel to each other, and folding is completed. state. Top point 2
Since the body is positioned approximately vertically between the lower points 5 and 5, the seat rest 3 and the step 4 are approximately vertical in the folded state. Corresponding to this state, the telescopic tube 11 is fully extended, but in this fully extended state, the telescopic tube 11
When locked, this folding completion state is held. Note that the center of gravity of the seat 3 can be moved further in the folding direction than the lower point 5, as in the case of Fig. 2, so the seat 3 can be leaned against the back rest 14 by gravity. By doing so, it is also possible to hold the folded state. At this time, it is not necessary to lock the telescopic tube 11.

Instead of rotating seat 3 upwards, step 4
It can also be folded by rotating upwards.

In order to rotate the step 4 upward, the stretching force of the telescoping tube 11 can be used instead of manually.

To change from the folded state to the unfolded state, the telescoping cylinder 4 may be freed and the step 4 may be manually rotated downward, but it is also possible to rotate the step 4 downward by using the contraction force of the telescoping cylinder 11. You may move.

In this explanation, the case where the telescoping tube 11 is used is shown as an example, but the step 4 may be held horizontally by a structure such as supporting the tip of the step 4 by the floor surface 13 in the unfolded state. Therefore, it is also possible to omit the use of the telescopic tube 14.

In FIG. 1, the tip of the step 4 appears to be supported by the floor 3, but this is not necessary. In the figure, the backrest 14 is located above the backrest 3 on the body 1.
However, this is not necessary.

Since the present invention has such an effect, the effects are as follows.

In the deployed state, the step 4 can be positioned above the access step 12 and close to the floor surface 13. Body point 10 is entry/exit step 1
It can be provided on two sides.

With this arrangement, the step 4 is positioned above the depressed entry/exit step 12, which eliminates this depression and has the effect of preventing the risk of tripping. Since the tip of the step 4 is located below and in front of the seat 3, it can be used as a footrest. This has the effect that the auxiliary seat itself can be installed above the entrance/exit step 12.

In the folded state, as explained in the operation section, it becomes as shown in Fig. 2, so the step 4 and the seat 3 that were above the entrance/exit step 12 in the unfolded state are almost gone, and they expand and contract slightly. Since only the tube 11 remains, there is no problem in the inlet/outlet step 12 performing its original function.

Since the folded state is held by the locked telescopic tube 11, it has the effect of stabilizing the folded state.

Converting between the unfolded state and the folded state is easy because it requires only the operation of the telescoping tube and the rotation of the seat.

For example, if the tip of step 4 is deformed so that it stands up as shown in the figure, it can not only be used as a footrest in the unfolded state, but also form a storage box or storage stand in the folded state. be able to.

In this way, according to the present invention, it is possible to provide a seat that has the effect of eliminating the danger of the floor of the seat near the top of the entrance/exit step being depressed and the disadvantage of having no footrest. Yes, it is of great practical value.

[Brief explanation of the drawing]

FIG. 1 is a side view of the unfolded state, FIG. 2 is a side view of the folded state, and FIG. 3 is a cutaway front view of the unfolded state. In the figure, 1 is the body, 2 is the upper point, 3 is the seat, 4 is the step, 5 is the lower point, 6 is the front upper point, 7 is the front rod, 8 is the front lower point, 9 is the step point, and 10 is the Body point 11 is a telescopic tube.

Claims (1)

[Scope of utility model registration request] It is provided with a seat 3 whose rear end is pivotally connected to the body 1 at an upper point 2 and positioned almost horizontally, and whose front end extends below the seat 3 to the front of the seat 3 and is positioned almost horizontally. Step 4
The rear end is pivoted to the body 1 at the lower point 5 below the upper point 2, and the upper end is pivoted to the front part of the seat 3 at the front upper point 6, and the lower end of the front rod 7 extending downward is connected to the front. A vertically retractable cylinder which is pivotally connected to the middle of the step 4 by a lower point 8, whose upper end is pivotally connected to the step 4 by a step point 9 in front of the lower point 5, and whose lower end is pivotally connected to the body 1 by a body point 10. 11, and has steps with upper points 2, front upper points, 6 front lower points, 8 lower points 5 located at approximately each vertex of a parallelogram.