JP2021010616A - Wheelchair loading/unloading device for mounting on automobile - Google Patents

Abstract

To provide a wheelchair loading/unloading device for mounting on an automobile, operable easily, and attachable/detachable easily without remodeling especially the automobile, in order to go out or move anytime and anywhere, while a wheelchair user stays seated, under the background of the arrival of the aging era.SOLUTION: Two arms are axle stopped at the center in X-shape with a changeable crossing angle, and extension/contraction caused by change of the crossing angle is used for ascending/descending, therefore, when being lifted up to the highest point, a folded state is obtained, and a wheelchair seated by a person is integrated with the wheelchair loading/unloading device, and is carried-in/out into/from an automobile by a support part taking in/out part. Thus, a wheelchair loading/unloading device for mounting on an automobile, which is attachable/detachable easily and handleable easily is provided.SELECTED DRAWING: Figure 1

Description

The present invention relates to an automobile-mounted wheelchair loading / unloading device for carrying a wheelchair in which a person requiring long-term care is seated into an automobile and carrying it out at a target destination.

The applicant has already obtained a patent decision in Japanese Patent Application No. 2018-27708 regarding the wheelchair loading / unloading device for mounting the present application.
In the driving mechanism of the invention related to the already applied application,
Another method was invented, and the others are the same as the inventions filed above.

Japanese Patent Application No. 2018-27708

In the patented invention, as a means for raising and lowering the mounting portion in a horizontal state,
Since the lower end of the elevating arm (401) was moved horizontally in order to change the crossing angle of the elevating arm (401, 402) mounted on the X-shape, the crossing angle of the elevating arm as it goes up to the top. As it becomes smaller and approaches the horizontal state, a large force is required to push the lower end of the lifting arm in the previous term, and as a result, the lifting force weakens.
There was a drawback that it was difficult to fry.

The vehicle-mounted wheelchair loading / unloading device (FIG. 1) according to claim 1 of the present invention
As shown in FIG. 2, a flat plate-shaped mounting portion (500) on which a wheelchair on which a person is seated can be mounted, and
A pair of left and right suspension beams for suspending the mounting portion, a stepladder support portion (300) for supporting the suspension beams, and a stepladder support portion (300) installed in an automobile are installed.
It has a support portion insertion / removal portion (200) that allows the support portion to be taken in and out from an opening at the rear of the automobile, and an elevating portion (400) that raises and lowers the mounting portion between the pulled-out suspension beam and the road surface.

As shown in FIG. 3, the elevating portion has a first elevating arm (401A, 401B) and a second elevating arm (402A, 402B), and the first elevating arm and the second elevating arm have an X-shape having a variable crossing angle. So that it looks like
The center of the first elevating arm and the center of the second elevating arm are rotatably attached to the shaft.

As shown in FIG. 3, the upper end portion of the first elevating arm (401A, 401B)) and
The upper end of the second elevating arm (402A, 402B)
Suspended on the suspension beams (301A, 301B).
The first elevating arm and the upper end of the second elevating arm
It is movable along the suspension beam.

The lower end of the first elevating arm and the lower end of the second elevating arm, which suspends the mounting portion on the lower end of the second elevating arm, can move along the mounting portion. Is.

The mounting portion has a drive mechanism for raising and lowering the first lifting arm and the shaft attachment shafts (606A, 606B) at the center of the second lifting arm.

The drive mechanism according to claim 2 is as shown in FIG.
It has a motor with a worm gear reducer (601) and a shaft (602A, 602B) for power transmission with gears (603A, 603B) inserted at the two left and right tips joined to the reducer, and hangs on the gears. One end of the chain (604A, 604B) is connected to a telescopic spring (605A, 605B), and the other end of the spring is fixed to the mounting portion.
Further, the other end of the chain is hung on gears (606A, 606B) pivotally attached to the shafts at the center of the first and second elevating arms, and the ends thereof are fixed to the mounting portion and driven by positive and negative rotation of the electric motor. When the power transmission shaft rotates and the gear at the tip winds up and lowers the chain, the shaft attachment shaft at the center of the first and second elevating arms moves up and down, and the first and second elevating arms move up and down. The crossing angle of the above changes and the elevating part moves up and down while always keeping the level.

According to the invention of the present application, the problems of Japanese Patent Application No. 2018-27708, which have already been filed, have been solved, the structure of the drive mechanism has been simplified, the number of parts has been reduced, and the manufacturing cost has been reduced.

Overview perspective view of the present invention Lifting device perspective view Lifting device structural drawing Enlarged perspective view of the drive mechanism Suspension connection diagram of the elevating part Detailed view of the support part Perspective view of the device of the present invention stored in an automobile carrier Perspective view of the device of the present invention pulled out from the automobile carrier Rotational operation perspective view of stepladder Perspective view with stepladder Perspective view of the device of the present invention descending to the road surface Perspective view of a wheelchair in which a person is seated mounted on the device of the present invention. A perspective view of a person sitting in a wheelchair Perspective view of a seated wheelchair stored in a car

Hereinafter, embodiments for carrying out the present invention will be described.

As shown in FIG. 3, the elevating portion according to claim 1 has a pair of left and right first elevating arms (401A, 401B) and a second elevating arm (402A, 402B).
The first elevating arm and the second elevating arm are shaped like an X with a variable crossing angle.
Rotatably attached to the center of the first elevating arm and the second elevating arm, gears (606A, 606B) are pivotally attached to the shaft attachment shaft.

As shown in FIG.
Rollers (403A, 403B) are attached to the upper end of the first elevating arm.
A roller (404A, 404B) is provided at the upper end of the second elevating arm, and a C-shaped channel is used for the suspension beam (301A, 301B) as shown in FIG. 5, and the roller is used as the suspension beam. By pivoting, the rollers rotate along the interior of the suspension beam.

As shown in FIG. 4, C-shaped channels having the same shape as the suspension beam are used at both ends of the mounting portion to form mounting beams (502A, 502B).
As shown in FIG.
The mounting beam is attached to the lower end roller (405A,) of the first elevating arm.
405B) and
By pivotally suspending the lower end roller (406A, 406B) of the second elevating arm, the roller rotates along the inside of the beam mounted in the previous period.

As shown in FIG. 4, the power transmission shafts (602A, 602B) coupled to both ends of the worm gear reducer motor (601) are penetrated into the mounting beam, and gears (603A, 603B) are inserted at the tips thereof. To wear.

As shown in FIG. 4, a gear (606A, 606B) in which the end portion of the power transmission chain (604A, 604B) is pivotally attached to the mounting beam and pivotally attached to the axle attachment shaft at the center of the first and second elevating arms. )
It is wound around the gears (603A, 603B) inserted into the tip of the power transmission shaft.
Join the tip to the spring (605A, 605B) and
The other end of the spring is hooked on the hole provided in the mounting beam.

In FIG. 3, since the motor is powered by the battery of an automobile,
A DC 12 volt motor (601) is used, and the switch uses a reverse rotation / reverse rotation switch (610).
The power transmission shaft is driven by the positive and negative rotation of the electric motor,
The chain wound by the gear inserted at the tip is wound up,
It is rolled down.

As a result, the shafts of the first arm and the second arm move up and down,
By changing the crossing angle of the first arm and the second arm,
The mounting part moves up and down while maintaining a horizontal state.

As shown in FIG. 6, the support portion insertion / removal portion (200) includes a pair of slide cases (201A, 201B) and rollers (202A, 202B, 203A, 203B, 204A, 204B) that support the load.
And the suspension beams (301A, 301B).
At the tip of the suspension beam, rollers (302A, 303A) and (302B, 303B) are provided to reduce friction between the suspension beam and the ceiling of the slide case when the suspension beam is taken in and out.

When the suspension beam is pulled out too much to the most advanced portion of the suspension beam,
It has stoppers (304A, 304B) to prevent it from coming off.
The support portion insertion / removal portion is fixed to the automobile by U-shaped bolts (205A, 205B) and fixing bolts (206A, 206B).

The order of use of the apparatus of the present invention will be described.

FIG. 7 shows a scene in which the rear door of an automobile equipped with the device of the present invention is opened.
You can see the folded device of the present invention. The place where this is pulled out is shown in FIG.
When the stepladder is turned 270 degrees as shown in FIG. 9 and the stepladder is erected on the road surface, FIG. 10 is obtained.

FIG. 11 shows a state in which the mounting portion is lowered to the ground by operating the switch of the motor from the state of FIG.

FIG. 12 shows a state in which the wheelchair in which the care recipient is seated is placed on the mounting portion.
By operating the switch of the motor and the function of the elevating part,
FIG. 13 shows a state in which the mounting portion is pulled up to the floor height of the loading platform of the automobile.

From the state shown in FIG. 13, the mounting portion and the elevating portion are pushed into the automobile.
If you push in 70 to 80% of the length of the suspension beam, the load on the stepladder will be reduced, so rotate the stepladder and stand it on the suspension beam.
FIG. 14 shows a state in which the mounting portion on which the wheelchair on which the care recipient is seated and the elevating portion are integrated and stored in the rear loading platform of the automobile.

100, automobile 200, support part loading / unloading part 300, support part 400, elevating part 500, mounting part 201, slide case 202, roller 203, roller 204, roller 205, fixed U bolt 206, fixing bolt 301, suspension beam 302, roller 303, roller 401, first elevating arm 402, second elevating arm 403, roller 404, roller 405, roller 406, roller 501, mounting plate 502, mounting beam 601, motor 602 with worm gear reducer, power transmission shaft 603 , Gear 604, Chain 605, Spring 606, Gear 610, Forward / Reverse switching switch (Note: For a pair of left and right parts, add A to the left and B to the right)

Claims (2)

A flat plate-shaped mounting part (500) that can mount a wheelchair on which a person is seated, and
A pair of left and right suspension beams (301A, 301B) for suspending the mounting portion, and
At the rearmost part of the suspension beam, a support portion (300) of a stepladder (303) that supports the suspension beam, and
A support part insertion / removal part (200) that is installed inside the car and allows the support part to be taken in and out from the opening at the rear of the car.
An elevating part (400) for raising and lowering the mounting part between the pulled-out suspension beam and the road surface is provided.
The elevating portion has a pair of left and right first elevating arms (401A, 401B) and a pair of left and right second elevating arms (402A, 402B).
The first elevating arm and the second elevating arm are rotatably pivotally attached to the center of the first elevating arm and the second elevating arm so that the first elevating arm and the second elevating arm form an X-shape with a variable crossing angle. The upper end of the elevating arm and the upper end of the second elevating arm are suspended from the suspension beam.
The upper ends of the first and second elevating arms can be moved along the suspension beam.
The mounting portion is suspended from the lower end of the first elevating arm and the lower end of the second elevating arm.
The lower ends of the first and second elevating arms can be moved along the mounting portion.
The mounting portion has a drive mechanism that uses an electric motor as a power source for raising and lowering the shaft attachment shaft at the center of the first and second elevating arms.
Wheelchair loading / unloading device for automobiles. The drive mechanism includes a motor with a worm gear reducer (601) and
It has a power transmission shaft (602A, 602B) with gears (603A, 603B) inserted at the two left and right tips that are joined to the speed reducer.
One end of the chain (604A, 604B) hanging on the gear is connected to a spring (605A, 605B) that expands and contracts.
The other end of the spring is fixed to the mounting portion, and the other end of the chain is a gear (606A, 606A, which is pivotally attached to the shaft attachment shaft at the center of the first and second elevating arms.
606B), its end is fixed to the mounting part,
The power transmission shaft rotates due to the positive and negative rotation drive of the electric motor,
The gear at the tip of the shaft winds up and down the chain, thereby
The shaft attachment axis of the first and second elevating arms moves up and down, the crossing angle of the first and second elevating arms changes, and the elevating portion moves up and down while always maintaining a horizontal position.
The wheelchair loading / unloading device for automobiles according to claim 1.