JPH0467459B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lifter equipped with a seat detection device that is used by a physically disabled person using a wheelchair to get on and off a car.

PRIOR ART Generally, when a physically disabled person who requires a wheelchair drives a car alone, it is necessary to move from the wheelchair to the driver's seat and to load the wheelchair into the car. Such moving and loading can be very tiring for people with physical disabilities.

On the other hand, Japanese Patent Laid-Open Publication No. 58-54954 discloses an automobile that a physically handicapped person can drive alone in a wheelchair.

However, according to the device shown in this publication,
A lifter is attached to the floor of the vehicle that rotates back and forth between the inside and outside of the wheelchair vehicle to move the wheelchair seat outside the vehicle to the driver's seat inside the vehicle, or conversely move the seat from the driver's seat to the outside of the vehicle. Due to the structure, in cars equipped with this lifter,
If the lifter is operated without the sheet being placed at a predetermined position on the lifter, there is a risk that the sheet may fall off the lifter.

Purpose of the Invention Therefore, the present invention provides an automobile seat detection device that is equipped with a seat detection device that enables the lifter to operate only when the seat is placed in a predetermined position on the lifter, thereby preventing the seat from falling off the lifter when the lifter is operated. The purpose of this invention is to provide a lifter for use.

Structure of the Invention In order to achieve this object, the present invention provides a seat supporting arm that is attached to the floor of a vehicle so as to rotate between the inside and outside of the vehicle and to move up and down, and to move the arm up and down. A lifting means and a rotating means for rotating the arm are provided, and a seat support base extending in the horizontal direction is integrally provided at the distal end of the arm, and the seat is placed at a predetermined position on the seat support base. A sheet detection switch is provided on the seat support side, which is operated by either the seat or the switch operation means on the seat support side when the sheet is placed, and the elevating means and the rotation means are operated by the sheet detection switch. This invention is characterized by a lifter for getting on and off an automobile with a seat detection device, which is connected to a switch so as to be in an operable state when the lifter is operated.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In Figures 1 to 3, 1 is a car body;
2 is a front door attached to the vehicle body 1; 3 is a sliding door attached to the side of the vehicle body 1 so as to be able to slide forward and backward; this sliding door 3 is designed to open and close the rear of the front door 2. . Moreover, when the front door 2 and sliding door 3 are opened, there is one large space between them.
It is formed as shown in FIG. Also, 4 is car body 1
5 is the floor of the vehicle body 1.

A seat mounting frame 6 is fixed to a portion of the floor 5 that corresponds to the driver's seat.
As shown in FIG. 4, a seat lock device 7 is installed on the vehicle, a lifter 8 for getting on and off is installed on the floor 5 behind the driver's seat, and a motor 9 is installed on the rear of the floor 5.
And an oil pump 10 driven by this is installed.

As shown in FIG. 4, the seat locking device 7 includes a lever 11, a link mechanism 12, a lock pawl 13, and a spring 14. The lock pawl 13 is connected to the lever 1.
It is designed to be raised and lowered via a link mechanism 12 by a vertical movement operation of 1. And lever 1
1 is biased upward or downward by a spring 14. In the figure, 6a is a stopper for positioning the seat, and 6b is an engaging claw for engaging the cushion holder.

The lifter 8 includes a cylindrical support post 15 fixed on the floor 5 as shown in FIGS. 4 and 5, and a horizontal arm 16 whose base is mounted on the support post 15 so as to rotate in the horizontal direction. An arm attachment member 17 integrally provided at the tip of the horizontal arm 16, and a seat support arm 1 attached to the arm attachment member 17.
It is equipped with 8. This seat support arm 18 is
By rotating the horizontal arm 16 in the horizontal direction, it can be rotated between above the driver's seat inside the vehicle and outside the vehicle.

The seat support arm 18 includes a pair of links 19 and 20 that are vertically arranged in parallel and an inclined arm 21 that extends upwardly and downwardly. are pivotally connected to via pivots 22, 23, links 19,
The free end of 20 is pivotally attached to the upper end of the inclined arm 21 via pivots 24 and 25. This allows the seat support arm 18 to move up and down as a whole. Further, a seat support base 26 extending in the horizontal direction is integrally provided at the tip or lower end of the inclined arm 21 (see FIGS. 3 to 7).

On both sides of the base of this seat support stand 26 are sixth
As shown in FIG. 7, stopper plates 27, 27 for positioning the sheet and preventing sheet displacement are fixed. Furthermore, a space 28 is formed in the lower part of the inclined arm 21 and is open to the front and back. A bracket 30 for mounting the switch is fixed between the side walls 29 and 29' forming this space 28. Proximity switch 3 such as a reed switch installed
1 and 32 are installed as sheet detection switches (see FIG. 7). In addition, the seat support base 2
A cover 33 that covers the front surfaces of the proximity switches 31 and 32 is pivotally attached to the portion between the stopper plates 27 and 27 of No. 6 so as to be movable up and down with a hinge 33a, and the cover 33 is placed along the inclined arm 21 of the cover 33. Magnets 34 and 35 are attached to the surface as switch operating means. And cover 33
When the front surface of the proximity switches 31 and 32 is covered with
Magnets 34 and 35 are proximity switches 31 and 32
These are designed to be turned on in opposition to the

A cover locking piece 36 is fixed to one side of the free end of the cover 33 and protrudes toward the proximity switch mounting side and is perpendicular to the cover 33. Further, a locking device 37 for locking a cover locking piece 36 is attached to the outer surface of the side wall 29 of the inclined arm 21. This locking device 37 is connected to a frame 38 fixed to the side wall 29.
and a pair of rollers 39, 39' mounted on this frame 38 and urged in a direction to press against each other. Further, a vertically open space 40 is formed on the base side of the seat support base 26, and a magnet mounting plate 42 is suspended between the lower portions of the side walls 41 and 41' forming this space 40. A magnet 43 for holding the cover 33 is fixed on the center of the plate 42.

A seat 45 of a wheelchair 44 shown in FIG. 8 is placed on such a seat support base 26. This seat 45 has a cushion pedestal 46,
It consists of a cushion 47 attached to the upper part of the cushion 47 so as to be slidable in the front-rear direction. A stand support member 48 is protruded from the side of the cushion holder 46 of the seat 45, and this stand support member 48 is placed on a frame 49. Moreover, the cushion pedestal 46 is removably fixed to the frame 49 of the wheelchair 44 by a fixing means (not shown). In addition, brackets 50, 50' are protruded from both sides of the rear part of the cushion pedestal 46, and stopper plates 27, 2 are provided between the brackets 50, 50'.
A positioning rod 51 to be inserted between the positioning rod 7' and the inclined arm 21 is suspended, and a magnet mounting plate 52 is fixed to the positioning rod 51 facing upward. 53 and 54 are fixed. The magnets 53 and 54 move the positioning rod 51 to the stopper plates 27 and 27 when the sheet 45 is placed at a predetermined position on the sheet support base 26.
When the seat 45 is placed on the seat support base 26 while being inserted between the tilting arm 21 and the tilting arm 21, the proximity switches 31 and 32 on the tilting arm 21 side are turned on. (See Figure 9). At this time, the seat support pedestal 26 is inserted between the side walls 46a and 64b of the cushion pedestal 46,
The cushion pedestal 46 is designed not to move laterally.

The above-mentioned lifter 8 also includes a lifting means for vertically moving the seat support arm 18, that is, a first hydraulic cylinder 55, and a rotation means for horizontally rotating the seat support arm 18, as shown in FIGS. 4 and 5. That is, a second hydraulic cylinder 56 is provided. The tip of the piston rod 55a of the first hydraulic cylinder 55 is pivotally supported on the pivot 23, and the piston rod 55a of the first hydraulic cylinder 55 is
The base of the cylinder body 55b is pivotally supported on the pivot shaft 24. A vertically extending support shaft 57 is fixed to the side of the base of the horizontal arm 16 as shown in FIG.
A cylinder mounting bracket 58 is fixed to the center of the floor 5 as shown in FIG. The piston rod 5 of the hydraulic cylinder 56 is attached to the support shaft 57.
The tip of the cylinder 6a is pivotally supported, and the base of the cylinder body 56b of the hydraulic cylinder 56 is pivotally attached to the bracket 58 by a pivot 59 that extends vertically.

FIG. 10 shows a hydraulic circuit for the first and second hydraulic cylinders 55 and 56. In FIG. 8, the inside of the cylinder body 55b is divided into two oil chambers 60, 61 by the piston 55c integrated with the piston rod 55a, and the inside of the cylinder body 56b is divided into two oil chambers 62, 63 by the piston 56c integrated with the piston rod 56a. It is divided into.

The oil chamber 60 is connected to a 4-port 3-position electromagnetic switching valve 65 (hereinafter simply referred to as the switching valve 65) via a variable flow rate adjustment valve 64 with a check valve (hereinafter simply referred to as the flow rate adjustment valve 64).
The oil chamber 61 is connected to the second port b of the switching valve 65 via a check valve variable flow rate adjustment valve 66 (hereinafter simply referred to as the flow rate adjustment valve 66). There is. And oil tank 67
An oil pump 10, piping 69,
A check valve 70 and a pipe 71 are connected in series in this order. Also, the oil tank 67 and the fourth port d of the switching valve 65 are connected to the oil return pipe 7.
2. Further, the pipe 69 and the oil tank 67 are connected via a pressure control valve 73.

The oil chamber 62 mentioned above is a variable flow rate adjustment valve 74 with a check valve.
(hereinafter simply referred to as the flow rate adjustment valve 74)
It is connected to the first port a' of the port 3 position electromagnetic switching valve 75 (hereinafter simply referred to as the switching valve 75), and the oil chamber 6
3 is the second one of the switching valve 75 via a variable flow rate adjustment valve 76 with a check valve (hereinafter simply referred to as the flow rate adjustment valve 76).
Connected to port b', the third port of the switching valve 75
c' is connected to the pipe 71 via the pipe 77, and the fourth port d' of the switching valve 75 is connected to the pipe 71 via the pipe 78.
Connected to 2.

Moreover, the above-mentioned switching valve 65 has a solenoid 7
9 and 80, when the solenoid 79 is energized, the first and fourth ports a and d are communicated, and the second and third ports b and c are also communicated, while when the solenoid 80 is energized, the first and third ports are communicated. Ports a and c communicate with each other, and second and fourth ports b and d also communicate with each other. Similarly, the switching valve 75 has solenoids 81 and 8.
When the solenoid 81 is energized, the first and fourth ports a' and d' communicate with each other, and the second and third ports b' and c' communicate with each other.
When energized, the first and third ports a' and c' communicate with each other, and the second and fourth ports b' and d' communicate with each other. In FIG. 4, the same reference numerals are used to indicate the components of the circuit described above.

In FIG. 5, a bracket 83 for attaching a cord is fixed on the base of the horizontal arm 16, one end of a cord 84 is held at the upper end of this bracket 83, and the other end of this cord 84 is held at the upper end of this bracket 83. A control box 85 is installed. A lever 86 for operating a vertical movement switch is mounted on the control box 85 so as to be tiltable left and right in FIG. It is mounted so that it can be tilted.

FIG. 11 shows a vertical switch 88 and a horizontal switch 89 operated by levers 86 and 87,
This is a block diagram showing the electrical connection relationship of the above-mentioned proximity switches 31, 32, motor 9, switching valves 65, 75, etc. In FIG. 11, an ignition switch 91 and a motor 9 are connected in series between an automobile battery 90 and ground. Further, the proximity switch 31 is connected to a battery 90 via an ignition switch 91,
Proximity switch 32 is connected in series to proximity switch 31. Then, with the ignition switch 91 turned on, the nearby switches 31 and 3 are turned on.
2 are both turned on, current from the battery 90 is applied to the vertical movement switch 88 and the horizontal movement switch 89. In this state, move the lever 86 to the fifth position.
In the figure, when the vertical movement switch 88 is operated by tilting to the right or left, the solenoid 7 of the switching valve 65
9 or 80 operates the switching valve 65, and the motor 9 is energized to operate the motor 9. On the other hand, when the lever 87 is tilted in the direction perpendicular to the plane of the paper in FIG.
When the motor 9 is activated, the motor 9 is energized and the motor 9 is activated.

Next, the operation of the lifter for getting on and off with the seat detection device configured as described above will be explained.

In the state shown in FIGS. 1 and 2, the seat support base 26
is located on the seat mounting frame 6 as shown in FIG. Moreover, in this state, since the cover 33 covers the front surfaces of the proximity switches 31 and 32,
The proximity switches 31 and 32 are turned on by magnets 34 and 35 of the cover 33. Therefore, when the ignition switch 91 is turned on, the levers 86 and 8 of the control box 85 are turned on.
The motor 9 and the switching valves 65 and 75 can be operated by operating the switch 7.

In such a state, when the lever 86 is tilted to the left or right in FIG. 5 to operate the vertical switch 88, the solenoid 7 of the switching valve 65
9 or 80 and the motor 9 is also energized.

Then, when the solenoid 79 is energized, the first and fourth ports a, d and the second and third ports of the switching valve 65 are energized.
Ports b and c are brought into communication, and oil pump 10 is operated by motor 9. As a result, after the oil in the oil tank 67 is sucked into the oil pump 10 via the filter 68, the sucked oil flows through the piping 69, the check valve 70, the piping 71, the switching valve 65, and the flow rate adjustment valve 66. The oil in the oil chamber 60 flows into the oil chamber 61 of the cylinder 55 through the flow rate regulating valve 6.
4. Returned to the oil tank 67 via the switching valve 65 and piping 72. As a result, the cylinder 55 is extended and the seat support arm 18 and the seat support base 26 are raised.

Furthermore, when the solenoid 80 is energized, the first and third ports a, c and the second and fourth ports b, d of the switching valve 65 are brought into communication, and the oil pump 10 is operated by the motor 9. As a result, the oil sucked into the oil pump 10 in the same manner as described above is transferred to the piping 69, check valve 70,
The oil in the oil chamber 61 flows into the oil chamber 60 via the piping 71, the switching valve 65, and the flow rate adjustment valve 64, while the oil in the oil chamber 61 is returned to the oil tank 67 via the flow rate adjustment valve 66, the switching valve 65, and the piping 72. As a result, the cylinder 55 is contracted and the seat support arm 18 and the seat support base 26 are raised.

On the other hand, as mentioned above, the proximity switches 31 and 32
When the left/right switch 89 is actuated by tilting the lever 87 in one direction or the other in the direction perpendicular to the plane of the paper in FIG.
The solenoid 81 or 82 of No. 5 is energized, and at the same time, the motor 9 is energized.

When the solenoid 81 is energized, the first and fourth ports a', d' and the second and third ports of the switching valve 75 are energized.
Ports b' and c' are energized and the oil pump 10 is operated by the motor 9. As a result, after the oil in the oil tank 67 is sucked through the filter 68, the sucked oil is passed through the piping 69, the check valve 70, the piping 71, 77, the switching valve 75, and the flow rate adjustment valve 76. While the oil in the oil chamber 62 flows into the chamber 63, the oil in the oil chamber 62 flows through the flow rate adjustment valve 74, the switching valve 75, and the pipes 78, 72.
The oil is returned to the oil tank 67 via. As a result, the cylinder 56 is reduced in size as shown in FIGS. 3 and 4.
The horizontal arm 16 shown in the figure is horizontally rotated counterclockwise (toward the inside of the vehicle) about the support post 15.

On the other hand, when the solenoid 82 is energized, the first and third ports a' and c' and the second and fourth ports b' and d' of the switching valve 75 are brought into communication, and the oil pump 10 is operated by the motor 9. I am made to do so. As a result, the oil sucked into the oil pump 10 in the same manner as described above flows into the oil chamber 62 of the cylinder 56 via the piping 69, the check valve 70, the piping 71, 77, the switching valve 75, and the flow rate adjustment valve 74. ,
The oil in the oil chamber 63 flows through the flow rate adjustment valve 76 and the switching valve 7.
5. Returned into the oil tank 67 via pipes 78 and 72. As a result, the cylinder 56 is extended, and the horizontal arm 16 shown in FIG. 2 is horizontally rotated clockwise (outside the vehicle) about the support post 15.

Such an operation is performed when the proximity switches 31 and 32 are connected to the magnet 5 attached to the seat 45 of the wheelchair 44.
This can also be done when it is turned on at 3 and 54.

Therefore, the seat support base 26 is located inside the vehicle as shown in FIGS. 1 and 2, and the proximity switch 3
1 and 32 are turned on by the magnets 34 and 35 of the cover 33, when a physically disabled person gets into a car, first the physically disabled person who operates the wheelchair must open the front door 2 and slide of the car. Open the door 5 as shown in Figures 1 and 3,
Control box 85 (5th
(Fig.), tilt the levers 86 and 87,
The seat support arm 18 and the seat support base 26 are rotated out of the vehicle as shown in FIGS. 3 and 4.

In this state, since the cover 33 covering the proximity switches 31, 32 is located on the same surface as the stopper plate 27, the positioning rod 51 of the seat 45 cannot be inserted between the stopper pieces 27, 27 and the inclined arm 21. Therefore, the cover 33 is
When opened as shown in the figure, the cover 33 is attracted to the magnet 43, and the positioning rod 51 can be inserted between the stopper pieces 27, 27 and the inclined arm 21. In this state, the proximity switch 31,
32 is open and in the OFF state, the switching valves 65, 75 and the motor 9 will not operate even if the levers 86, 87 of the control box 85 are tilted. As a result, the seat support arm 18 and the seat support base 26 cannot be moved up and down or rotated.

FIG. 12 shows the state after the physically disabled person 92 operating the wheelchair 44 opens the cover 33 of the lifter located outside the vehicle. From this state, as shown in FIG.
5 is placed on the seat support base 26. This is done until the seat 45 hits the tilting arm 21. At the position where the seat 45 contacts the inclined arm 21, the magnets 53 and 54 of the seat 45 face the proximity switches 31 and 32, and the proximity switches 31 and 32 are turned on.

Next, by releasing the fixation of the seat 45 to the frame 49 and tilting the lever 86, the seat support base 26 is raised, the seat 45 is placed on the seat support base 26, and the seat support base 26 is raised. 26
The side walls 46a, 4 of the cushion pedestal 46 in FIG.
6b, and the positioning rod 51 of the seat 45 is inserted between the stopper plates 27, 27 and the inclined arm 21. And sheet 45
When the frame 49 of the wheelchair 44 that has come off is disassembled and stored in the rear side of the vehicle body 1, the state shown in FIG. 14 is obtained. From this state, pull out the footrest 93 in the seat support base 26 forward, place your legs on the footrest 93 as shown in FIG. is operated to rotate the seat support base 26 to above the seat mounting frame 6 inside the vehicle. After this,
By lowering the seat support base 26 by operating the lever 86, the seat 4 on the seat support base 26 is lowered.
5 on the seat mounting frame 6, and then hooking the lock claw 13 of the seat locking device 7 onto the engagement protrusion 94 provided on the side of the cushion holder 46 of the seat 45, the seat 45 is mounted. The vehicle is fixed to the frame 6, and riding of the physically disabled person 92 is completed.

By the way, when the seat 45 is supported from the wheelchair 44 on the seat support base 26, if the seat 45 is not positioned at a predetermined position on the seat support base 26, that is, the positioning rod 51 of the seat 45 will not touch the stopper plates 27, 27. If it is not located between the inclined arm 21, the proximity switches 31 and 32 will
It is in the OFF state. In this state, even if the levers 86, 87 are tilted, the switching valves 65, 7
5. Since the motor 9 etc. do not operate, the seat support base 26 does not operate.

Effects As described above, the present invention provides a seat supporting arm that is mounted on the floor of a vehicle so as to rotate between the inside and outside of the vehicle and to move up and down, and a lifting means that moves the arm up and down. A rotating means for rotating the arm is provided, and a seat support base extending in a horizontal direction is integrally provided at the tip of the arm, and when the seat is placed at a predetermined position on the seat support base. A sheet detection switch is provided on the seat support side, which is operated by either the seat or the switch operation means on the seat support side, and the elevating means and rotation means are operated by the sheet detection switch. This is a lift for getting in and out of a car with a seat detection device that is linked so that it can be activated when it is activated, so the lifter can only be activated when the seat is placed in a predetermined position on the lifter. , it is possible to reliably prevent the sheet from falling off the lifter when the lifter is activated.

[Brief explanation of the drawing]

FIG. 1 is a side view of an automobile equipped with a lifter for getting on and off with a seat detection device according to the present invention, and FIG.
Fig. 3 is a plan view of the car with the sliding door and front door closed; Fig. 3 is a plan view of the car with the lifter shown in Fig. 1 taken out from the car; Fig. 4 shows a part of Fig. 3. FIG. 5 is an enlarged side view of the lifter shown in FIG. 1, FIG. 6 and FIG. 7 are partial perspective views of the proximity switch attachment part of the lifter, and FIG. 8 is a rear view of the wheelchair. Figure 9 is an explanatory diagram showing the relationship between the seat in Figure 8 and the lifter in Figure 1;
The figure is the hydraulic circuit diagram of the lifter shown in Figure 1,
This figure is a block diagram showing the electric circuit of the lifter shown in FIG. 1, and FIGS. 12 to 16 are perspective views showing the lifter in use. 1...Vehicle body, 5...Floor, 8...Lifter, 9
... Motor, 10 ... Oil pump, 18 ... Seat support arm, 26 ... Seat support base, 31,
32... Proximity switch (sheet detection switch),
33... Cover, 34, 35... Magnet (switch operation means), 44... Wheelchair, 45... Seat, 53, 54... Magnet, 55... First
hydraulic cylinder (elevating means), 56... second hydraulic cylinder (rotating means), 85... control box, 86, 87... lever, 88... vertical movement switch, 89... horizontal movement switch.

Claims (1)

[Claims] 1. An arm for supporting a seat is mounted on the floor of a vehicle so as to rotate between the inside and outside of the vehicle and to move up and down, and includes a lifting means for vertically moving the arm and a rotating means for rotating the arm. A seat support base extending horizontally is integrally provided at the tip of the arm, and when the seat is placed at a predetermined position on the seat support base, a switch on the side of the seat and the seat support base is activated. A sheet detection switch operated by either one of the operating means is provided on the seat supporting base side, and the elevating and lowering means and the rotating means are arranged so that the sheet detection switch is activated when the sheet detection switch is operated. A lifter for getting on and off an automobile with a seat detection device, characterized in that the lifter is connected to a car seat detection device.