JPH0349580B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention <Field of Industrial Application> The present invention relates to an improvement of a seat in a bus having seats for physically handicapped persons, particularly wheelchair users.

<Concerning conventional technology> This type of wheelchair fixing device inside a car was
54-65110, Special Publication 55-13939, Real Publication 57-42821,
57-103724, 58-28583, Special Publication Showa 60-52010,
As shown in various publications such as Utility Model Application Laid-Open No. 62-1620, this invention relates to means for effectively fixing a wheelchair inside a car.

<Problems to be Solved by the Invention> (A) Problems of the Prior Art The above-mentioned conventional technologies are all limited to means for securing the wheelchair inside the vehicle. Therefore, with these simple fixing methods, if the bus suddenly stops, the inertial shock that will be applied to the wheelchair user will be very large, and if the bus is rear-ended, the impact will also be large, so there is no way to prevent this or to use whiplash. There is a problem in that the means to prevent scratches is stepless.

(B) Technical problem to be solved by the present invention.

Therefore, in consideration of the above-mentioned problems, the present invention solves the technical problem of impact mitigation, which is how to alleviate the inertial impact when a bus carrying wheelchair users starts and stops, especially when it suddenly stops (sudden braking). It is something that I try to do.

(2) Regarding the configuration of the invention, (A) Means for solving the problem, the wheelchair user seat of the present invention has a forward rotation control mechanism for the wheelchair main wheels, a backrest for the wheelchair user, and its seat on the interior floor of the vehicle. It consists of a strut and an inertial shock absorbing band. The forward rotation control mechanism of the main wheels is constructed at the front of the seat, and allows the wheelchair to enter the seat very easily when the wheelchair is seated, and when the wheelchair user leaves the seat, the wheelchair user applies a certain amount of force to the hand rims. The structure is such that the main wheels are braked so that the passenger cannot leave the seat without applying forward rotational force.

Next is the backrest and its support, which is constructed at a certain distance from the forward rotation control mechanism of the main wheels, that is, at a distance that allows the main wheels of the wheelchair to enter with some grace. The wheelchair is constructed with cushioning properties so that the user can safely support his or her head while seated in the wheelchair, and is supported on the floor by struts. Also, side cushions are provided on both sides of the main wheel.

Next is the shock absorbing band, the base of which is fixed to an appropriate location on the seat, such as the backrest, support column, or side cushion, and the tip of the band can be attached to and detached from the main frame of the wheelchair. The entire band or a portion thereof is made of an elastic material, and is configured to absorb and alleviate inertial shocks applied to the wheelchair when the vehicle suddenly starts or stops.

The present invention is a bus in which a wheelchair user seat having such a configuration is arranged inside the vehicle.

(B) Effects of the invention Since the present invention has a seat for a wheelchair user having the above-described configuration, when a wheelchair user gets on the bus, he or she can enter the bus from the exclusive entrance/exit while sitting in the wheelchair. When the wheelchair is advanced backwards toward the seat, the main wheels easily pass over the forward rotation control mechanism and come to a stop close to the backrest and its support.

That is, the wheelchair is seated on a seat composed of a forward rotation control mechanism, a backrest, and its support. Once seated, inertial shock absorbing bands placed at appropriate locations on the seat are stretched over the main frame of the wheelchair. In such a case, the wheelchair is seated elastically by the inertial shock absorbing band, and the forward rotation control mechanism also controls the forward rotational force of the main wheels due to sudden stops, etc., and absorbs the impact. You will be seated.
Therefore, the shock caused by inertia when the bus starts and stops under normal conditions, or the shock caused by running inertia when it suddenly stops, is sufficiently absorbed and alleviated by the forward rotation control mechanism and the inertial shock absorbing band, and the wheelchair can fly out of its seat. Also, disabled people in wheelchairs do not jump out of their wheelchairs. Of course, wheelchairs are equipped with safety belts, making them even safer.

(C) Regarding Examples Next, examples will be described according to the drawings. Figures 1 and 2 are side and front views of a wheelchair seat provided on the floor of the vehicle, and are explanatory diagrams thereof. The interior floor surface 16 of the vehicle is spaced as appropriate as possible.
A bearing 17 is disposed in the bearing 17, and a rotating shaft 18 installed horizontally at both bent ends of the L-shaped control rotary plate 6 is attached to the bearing 17 so as to rotate coaxially with the control rotary plate 6. At this time, the L-shaped control rotary plate 6 is fixed to the rotating shaft 18 so that it rotates 90° each time in an L-shape when the wheelchair 1 is seated, and in an inverted L-shape when the wheelchair 1 leaves the seat. There is.

The height (length) of each plate of the control rotary plate 6 is such that when the wheelchair 1 is seated, its main wheels 2 are placed on the L-shaped bottom. Therefore, it is sufficient that this length is at least slightly longer than the radius of the main wheel 2.

The backrest 5 is set at least at the same height as the top of the wheelchair user's head from the floor, and has cushioning properties to alleviate inertial shocks such as rear-end collisions. The support column 11 also functions as a stopper to prevent the main wheels 2 of the wheelchair 1 from moving backward.

The distance between the L-shaped upright portion of the control rotary plate 6 and at least the support column 11 may be such that the main wheel 2 can be easily accommodated as shown in FIG.

Next, the inertial shock absorbing band 12 consists of a belt 7, a helical spring 8, and a hook 9, and the rear end of the belt 7 is attached to a support 11 or a side cushion 1.
4, etc., a helical spring 8 having an appropriate elasticity is connected to the front end, and a latch 9 is engaged to the tip of the helical spring 8. 3 is a spiral spring 8
It is a storage tube. Of course, each part of this structure may be a single elastic body, or the elastic body may be something other than a helical spring. Further, the overall length of the absorbent band 12 is sufficient as long as it exhibits a certain degree of tension when the hook 9 is hung on the main frame 10 of the wheelchair.

(3) Effects of the Invention Since the present invention has the above-described configuration and operation, when the wheelchair 1 is seated, the wheelchair 1 enters the seat in a backward posture, but at that time, the main wheels 2 stand on the floor in an inverted L-shape. At the position where it comes into contact with the rising part of the control rotary plate 6 installed and rotated 90 degrees backward, the previous rising part contacts the floor surface and becomes the bottom part of the L-shape, and the bottom part of the inverted L-shape. The part becomes an L-shaped rising part. Then, the main wheels 2 of the wheelchair 1 are positioned between the L-shaped rising part and the support 11, and the main wheels 2 are attached to the L-shaped bottom part, so that the wheelchair 1 is completely seated. Therefore, the entire weight of the wheelchair 1 and the human body is applied to the L-shaped bottom of the control rotary plate 6, and the control rotary plate 6 cannot be easily rotated forward. That is, forward movement of the wheelchair 1 is restricted. Once the wheelchair 1 is seated as described above, the disabled person can attach the hook 9 of the inertial shock absorbing band 12 to the main frame 10, and the absorbing band 12 can be attached to the main frame 10 and the support 11 or side cushion 14, etc. The wheelchair 1 can be more securely seated on the seat. Of course, disabled persons are required to wear safety belts attached to one wheelchair.

In such a case, the inertial shock that occurs when the bus normally starts and stops is completely absorbed by the slight forward rotation of the control rotary plate 6 and the slight expansion and contraction of the elastic body 8 of the inertial shock absorbing band 12, and the disabled person I hardly feel any shock.

The greatest effect of the present invention lies in the absorption and mitigation of large inertial shocks caused by a sudden start or stop of a bus or a rear-end collision due to some cause. This effect can be particularly expected when the bus of the present invention is used for regular buses, sightseeing buses, etc. that run on expressways.

That is, when the bus 19 suddenly starts or stops, everyone has experienced the large inertial shock that is exerted on the passengers, and this shock applies not only to buses but to all vehicles. Currently, in Japan, there are no examples of route buses or sightseeing buses operating with wheelchair users on board.

However, as we enter the era of welfare society, it is thought that the era will definitely come when buses will be operated with wheelchair users as passengers. The biggest challenge in doing so is a wheelchair with wheels that can roll back and forth even with the slightest amount of force.
The problem is how to transport the transport while preventing rolling motion, and the above-mentioned known techniques have been disclosed for this purpose, but these methods cannot absorb inertial shock and transport the transport safely. , dangerous for people with disabilities.

In the present invention, when a bus traveling at high speed suddenly stops, the rapid forward rolling motion of the main wheels 2 caused by running inertia is directly applied to the L-shaped rising portion of the control rotary plate 6, causing it to move forward. Trying to push it down. On the other hand, since the main wheels 2 are attached to the bottom portion, the weight of the disabled person and the wheelchair 1 acts to prevent the forward rotation of the control rotary plate 6. However, from this power,
When the force of the forward rolling motion due to running inertia becomes large, the control rotary plate 6 rotates forward and the wheelchair jumps out in front of the seat.

In such a case, in the present invention, the inertial shock absorbing band 12 acts to absorb the inertial shock force by expanding and contracting the elastic body 8, and prevents the wheelchair from jumping out of the seat (forward rotation of the control rotary plate by 90 degrees). do.
Therefore, the shock applied to the body of the disabled person is alleviated by the synergistic effect of these two simultaneous actions, and safety is ensured. Further, the side cushion 14 prevents the wheelchair from sliding sideways due to the rolling of the bus, and the backrest 5 also prevents whiplash by mitigating the impact caused by a sudden start or a rear-end collision.

Moreover, when sitting on the seat, all you have to do is move the wheelchair backwards, rotate the control rotary plate to get over it, and hook the inertial shock absorbing band to the main frame of the wheelchair, so you do not have to ask someone else's help. All operations can be performed by a disabled person sitting in a wheelchair.

[Brief explanation of drawings]

The drawings show an embodiment, and FIG. 1 is a side view showing a wheelchair seated on a wheelchair user seat provided on the floor of the vehicle, and FIG. 2 is a front view of the same without a person. FIG. 3 is an explanatory diagram showing the arrangement of seats. 1... Wheelchair, 2... Main wheel, 3... Spiral spring storage tube, 5... Backrest, 6... Control rotary plate, 7... Belt, 8... Spiral spring, 9...
... Latch fitting, 10 ... Main frame of wheelchair, 11 ...
...Strut (backrest), 12...Inertial shock absorption band, 13...Hand rim, 14...Side cushion, 15...Wheelchair entrance, 16...Interior floor, 17...Bearing, 18... Rotating shaft (control rotating plate), 19...Bath, 21...Footrest, 22
...Guiding wheel.

Claims (1)

[Claims] 1 Consists of a pair of control rotary plates 6 attached to the wheelchair entry/exit path to the seat in an L-shape at an angle of approximately 90° with respect to a rotating shaft 18 rotatably provided in a direction perpendicular to the entry/exit path. A forward rotation control mechanism for the wheelchair main wheel is provided, and a support 11 is provided behind the control mechanism at an interval that accommodates the wheelchair main wheel 2 to prevent the main wheel 2 from moving backward. At the same time, the support 11 is provided with an inertial shock absorbing band 1 having a hook 9 at its tip that can be hooked onto the main frame 10 of the wheelchair 1.
2, and the height of the control rotary plate 6 is set to a size such that the wheelchair is placed on the rotary plate 6 when the wheelchair is seated.