JP2939741B1 - Vehicle lifting device - Google Patents

Abstract

An object of the present invention is to provide a vehicle equipped with a lifter that raises and lowers a heavy object between a floor of a vehicle compartment and a road surface, so that an operator can easily climb on a platform of the lifter at a raised position. SOLUTION: After a wheelchair C is put on a platform 17 of a lifter 4 and raised to the height of a floor 5 of a vehicle compartment 1, a step 22 provided on the platform 17 is lowered via a pantograph mechanism 26 to ground on a road surface G. Let it. The caregiver rides on the platform 17 on step 22
After the upper wheelchair C is pushed into the cabin 1, the user can easily get into the cabin 1 from step 22. Further, since it is not necessary for the caregiver to move up and down together with the wheelchair C, there is no problem that the platform 17 is increased in size or a drive source of a large output is required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle elevating device having a platform provided on a floor of a vehicle and moving up and down between the floor and a road surface.

[0002]

2. Description of the Related Art In order to transport a cared person in a wheelchair, a vehicle provided with a platform for supporting and lifting the wheelchair at the rear end of the cabin is disclosed in, for example, Japanese Utility Model Publication No. 6-418.
81 and JP-A-7-304376. In the Japanese Utility Model Publication No. 6-41881, the wheelchair is lifted up and down with only the wheelchair placed on the platform. It is pushed into the room to form a space on the platform, and climbs into the space to push the wheelchair completely into the vehicle. Further, the one described in the above-mentioned Japanese Patent Application Laid-Open No. 7-304376 moves a platform supporting a wheelchair from a road surface to a vehicle interior in one motion.

[0003]

However, in the case where the platform is lifted with only a wheelchair placed on the platform, the caregiver puts his hand on the platform because the height difference between the platform at the raised position and the road surface is large. I had to climb. In addition, the above problem does not occur when the platform supporting the wheelchair is completely moved into the cabin in one motion, or when the platform is loaded with a wheelchair and a caregiver, but the above problem does not occur. There is a problem to do.

The present invention has been made in view of the above circumstances, and has as its object to enable an operator to easily climb a platform at an elevated position without increasing the size of a platform or a drive source for elevation. I do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 is provided for a vehicle having a platform provided on a floor of the vehicle and moving up and down between the floor and a road surface. In a lifting device, a step which can be moved up and down is provided at an end of a platform, and when the platform is in an ascending position connected to the floor, the step is lowered so that a support surface of the step is located at an intermediate height between the floor and the road surface. It is characterized by the following.

According to the above arrangement, when a heavy object is put on the platform to move up and down between the road surface and the floor, the step is lowered from the platform at the same height as the floor to raise the support surface of the step. By being positioned at an intermediate height between the floor and the road surface, the worker can easily step on the support surface of the step and get on the floor from the road surface, thereby improving workability. Further, since it is not necessary to raise and lower the operator together with the heavy object, there is no problem that the platform becomes large and a driving source having a large output is required.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the lower end of the step contacts the road surface when the step descends.

According to the above construction, when the worker steps on the support surface of the step, the weight of the step is supported by the road surface and the sink of the step is prevented. Can give a sense of security.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, the step is supported on the platform via a pantograph mechanism so as to be vertically movable.

According to the above configuration, the steps can be stored compactly when not in use, while the steps are supported by the pantograph mechanism so as to be able to move up and down with a large stroke with respect to the platform.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect, the step is formed in a ladder shape, and one end of the step is rotatably supported by the platform. And

According to the above configuration, since the steps are formed in a ladder shape, not only the structure of the steps is simplified, but also a plurality of supporting surfaces are formed in multiple stages, so that the operator can easily get on the floor. Can be

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 7 show a first embodiment of the present invention. FIG. 1 is an overall side view of a wheelchair transport vehicle, and FIG.
3 is an enlarged view of a main part of FIG. 3, FIG.
5 is a sectional view taken along line 5-5 of FIG. 4, FIG. 6 is a view showing a stored state of the steps, and FIG. 7 is an explanatory view of the operation.

As shown in FIGS. 1 and 2, the van-type wheelchair transport vehicle V has an opening 3 which is opened and closed by a tailgate 2 at the rear of the vehicle compartment 1, and the vehicle compartment facing the opening 3 is provided. A lifter 4 for raising and lowering the wheelchair C is provided at the rear end of the vehicle 1. The lifter 4 has linear first links 9, 9 and a first link 9, whose base ends are pivotally supported by a pair of left and right brackets 6, 6 provided on the floor 5 of the passenger compartment 1 via pins 7, 8; 2
Links 10, 10 and the first links 9, 9 and the second
Pins 11, 11; 12, 12 at the tips of the links 10, 10
"H" -shaped third links 13, 13 pivotally supported through
And hydraulic cylinders 14, 14 connecting between the two pins 8, 8; 11, 11 at diagonal positions.

The base end of a platform 17 is pivotally supported by brackets 15 fixed to the lower portion of the third links 13 via pins 16. The platform 17 is manually rotated around the pins 16, 16 through 90 °, and can select between a horizontal deployment posture and an upright storage posture. When the platform 17 is in the horizontal deployed position, the brackets 15, 15 and the platform 17 are connected by load supporting links 19 to support the load of the wheelchair C applied to the platform 17. At the rear end of the platform 17, a pair of left and right fall prevention flaps 21, 21 are pivotally supported via pins 20, 20. The fall prevention flaps 21 and 21 can be locked in the upright position shown by the solid line in FIG.

3 to 6, the platform 17 is formed in a U-shape in a plan view, and can be moved up and down by a notch 18 formed at the rear center thereof. 22 are provided. Step 22 includes a flat support surface 23 that can be fitted into the notch 18, a pair of left and right legs 25, 25 pivotally supported at both left and right ends of the support surface 23 via hinges 24. And the support surface 23 has a pair of left and right pantograph mechanisms 2.
It is supported by the platform 17 via 6 and 26 so as to be able to move up and down. The legs 25, 25 can be locked by the locking links 27 in the use position shown in FIGS. 4 and 5 and the folded position shown in FIG. The left and right widths of step 22 need to be wide enough for an adult to stand.
cm.

Next, the operation of the embodiment of the present invention will be described.

In order to transfer the wheelchair C carrying the cared person from the road surface G to the cabin 1 of the vehicle V, first, the tailgate 2 opens the opening 3 of the cabin 1 and the platform of the lifter 4. 17 is rotated by 90 ° around the pins 16, 16 from the standing storage position to the horizontal deployed position. Subsequently, when the hydraulic cylinders 14, 14 are contracted and driven, the first links 9, 9 and the second links 10, 10 fall to the rear of the vehicle body,
As shown in FIG. 7A, the platform 17 contacts the road surface G. Subsequently, after the fall prevention flaps 21 and 21 are fallen along the road surface G, the caregiver pushes the wheelchair C and places the wheelchair C on the platform 17, and further raises the fall prevention flaps 21 and 21.

Subsequently, when the hydraulic cylinders 14 and 14 are extended and driven, as shown in FIG. 7B, the first links 9 and 9 and the second links 10 and 10 stand up front of the vehicle body, and the platform 17 is Ascend to the same height as. Subsequently, as shown in FIG. 4 and FIG.
The pantograph mechanisms 26, 26 are extended in a state where the legs 25, 25 are lowered, and the legs 25, 25 are moved to the road surface G.
Ground.

Subsequently, as shown in FIG. 7 (c), the caregiver gets on the support surface 23 of the step 22 and pushes the wheelchair C to move from the platform 17 to the floor 5. In addition, the caregiver may move from step 22 to platform 17
And completely move the wheelchair C to a predetermined position in the vehicle compartment 1. Subsequently, the caregiver descends again on the road surface G via the step 22, and after folding the step 22 into the state of FIG. 6, raises the platform 17 and stores it in the passenger compartment 1,
The work is ended by closing the tailgate 2.

When the wheelchair C is lowered from the passenger compartment 1 to the road surface G, the step 22 is lowered when the platform 17 is at the same height as the floor 5 of the passenger compartment 1.
The operation of pulling out the wheelchair C from the vehicle compartment 1 onto the platform 17 and the movement of the caregiver between the vehicle compartment 1 and the road surface G can be easily performed.

As described above, when the size of the platform 17 is small, the wheelchair C and the caregiver cannot simultaneously ride on the platform 17,
Even if it is not possible to raise the wheelchair C and the caregiver at the same time because the output of the lifting drive source is small, by positioning the step 22 between the road surface G and the floor 5 of the cabin 1, the caregiver can It is possible to easily ascend and descend between the road surface G and the cabin 1 by performing the step 22, and the workability is greatly improved. Further, since the legs 25, 25 contact the road surface G when using the step 22, even if the weight of the caregiver acts on the support surface 23, the posture of the step 22 does not become unstable. Further, since the pantograph mechanisms 26, 26 are used, the step 22 can be moved up and down with a large stroke with respect to the platform 17, and the step 22 can be stored compactly when not in use. If the damper of the rear suspension of the vehicle V is locked so that it cannot expand or contract when operating the lifter 4, the wheelchair C can be moved up and down more stably.

Next, a second embodiment of the present invention will be described with reference to FIGS.

The second embodiment is different from the first embodiment in the structure of the steps.
This is different from the embodiment. Step 31 of the second embodiment is 2
It is formed in the shape of a ladder having stepped support surfaces 32, 32, one end of which is pivotally supported on the lower surface of the platform 17 via pins 33. As shown in FIG. 10, when not in use, the step 31 is stored along the lower surface of the platform 17 and is locked by the hook 34, and as shown in FIGS. Is the road surface G
Abut. In this embodiment, step 31 is a two-step supporting surface 3.
2 and 32, the caregiver can more easily make the road surface G
Further, it is possible to easily move up and down between the passenger compartments 1.

Next, a third embodiment of the present invention will be described with reference to FIG.

This third embodiment is a modification of the first embodiment. The step 22 of the first embodiment has legs 25, 25 which can be brought into contact with the road surface G. The step 22 in the example does not include the legs 25, 25, and the step 22
Stops at a predetermined height from the road surface G without touching the ground. Therefore, the first and second steps in which the step 22 is brought into contact with the road surface G are performed.
Although the support of the step 22 is slightly unstable compared to the embodiment, the damper of the rear suspension of the vehicle V is locked so as not to expand and contract, thereby preventing the vertical movement of the step 22 and stably moving the wheelchair C up and down. It can be carried out.

Although the embodiment of the present invention has been described in detail, various design changes can be made in the present invention without departing from the gist thereof.

For example, in the embodiment, the van-type wheelchair transport vehicle V is illustrated, but the present invention can be applied to other vehicles such as trucks. The weight lifted and lowered on the platform 17 is not limited to the wheelchair C, but may be any other weight. Instead of manually moving up and down in steps 22 and 31, it is also possible to use an electric motor or a hydraulic cylinder. In the embodiment, the floor 5 of the cabin 1 is used.
Although the lifter 4 is provided at the rear end, it is also possible to provide it on the side of the floor 5.

[0030]

As described above, according to the first aspect of the present invention, when a heavy object is put on the platform to move up and down between the road surface and the floor, the platform is located at the same height as the floor. By lowering the step from the step so that the support surface of the step is located at an intermediate height between the floor and the road surface, the worker can easily step on the floor from the road surface by stepping on the support surface of the step. The performance is improved. Further, since it is not necessary to raise and lower the operator together with the heavy object, there is no problem that the platform becomes large and a driving source having a large output is required.

According to the invention described in claim 2,
When the operator steps on the support surface of the step, the weight is supported on the road surface and the sink of the step is prevented, so that the posture of the step can be stabilized and a sense of security can be given to the operator.

According to the third aspect of the present invention,
The steps can be stored compactly when not in use, while the steps are supported by the pantograph mechanism to be able to move up and down with a large stroke with respect to the platform.

According to the invention described in claim 4,
Since the steps are formed in the shape of a ladder, not only the structure of the steps is simplified, but also a plurality of supporting surfaces are formed in multiple stages, so that the operator can easily get on the floor.

[Brief description of the drawings]

FIG. 1 is an overall side view of a wheelchair transport vehicle.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 is a view in the direction of arrows in FIG. 2;

FIG. 4 is a view in the direction of arrows in FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is a diagram showing a stored state of a step.

FIG. 7 is an explanatory diagram of an operation.

FIG. 8 is a view corresponding to FIG. 4 according to a second embodiment of the present invention.

9 is a sectional view taken along line 9-9 in FIG.

FIG. 10 is a diagram showing a stored state of a step.

FIG. 11 is a perspective view of a platform and steps according to a third embodiment of the present invention.

[Explanation of symbols]

 5 floor 17 platform 22 step 23 support surface 26 pantograph mechanism 31 step 32 support surface

Claims (4)

(57) [Claims] 1. A vehicular lifting apparatus having a platform (17) provided on a floor (5) of a vehicle and moving up and down between the floor (5) and a road surface (G), wherein an end of the platform (17) is provided. Steps (22, 31) that can be moved up and down are provided in the section, and when the platform (17) is at the ascending position connected to the floor (5), the step (2, 31)
(2, 31) is lowered so that the support surfaces (23, 32) of the steps (22, 31) are positioned at an intermediate height between the floor (5) and the road surface (G). . 2. The vehicle lifting device according to claim 1, wherein a lower end of the step (22, 31) is in contact with a road surface (G) when the step (22, 31) is lowered. 3. The apparatus according to claim 1, wherein the step (22) is supported on the platform (17) via a pantograph mechanism (26) so as to be able to move up and down. 4. The vehicle lift according to claim 1, wherein the step (31) is formed in a ladder shape, and one end of the step (31) is rotatably supported on a platform (17). apparatus.