JP3322718B2 - Lift equipment for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lift device for raising and lowering a wheelchair, for example.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Utility Model Publication No. 59-39078, a vehicle lift device (elevation device) is provided in an opening of a vehicle and is driven by a drive device. It has a pair of left and right side frames which are raised and lowered by each parallelogram link mechanism and support the platform at the lower end.

[0003]

In the above-described conventional vehicle lift apparatus , the platform is of a single construction. When the platform is stored from a substantially horizontal state to a substantially upright state, the height of the platform is increased and the vehicle height is increased. Field of view of the opening becomes extremely poor. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a lift capable of easily storing a platform in a compact manner.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pair of left and right sides provided in an opening of a vehicle.
Platform supported at the lower end of the frame so that it can move up and down
And the plateau attached to the side frame.
A pair of left and right parallel 4 for raising and lowering the system by driving the driving device
A side link mechanism, and the platform is
And is installed in a rotatable manner between
A first platform which is held substantially upright;
It is rotatably mounted on the tip of the first platform.
Same when the first platform is held in a substantially horizontal state
Almost horizontal or folded with respect to the first platform
Composed of a second platform held in a state
In the dual use lift device, the first platform and the second platform
Both platforms are kept horizontal in their raised position.
If not, the platform cannot be raised or lowered.
And the first platform is held horizontally.
Or when the first platform is held at the rising end
The second platform will not rotate when not
And the second platform is folded
When the first platform and the second platform are not
When the platform is not at the rising end, the first platform
A drive control mechanism that prevents the system from rotating
To provide a vehicle lift device characterized by the following.
Things.

[0005]

[Operation and effect of the invention] riff for a vehicle configured as described above
In winding device, if the first platform is substantially horizontal state, to a state folded second platform from a substantially horizontal state can be pivoted, also substantially the hand first platform with the second platform such state it can be able make pivoted from a horizontal state to a substantially upright posture, accommodated by standing at folded state platform in two. Therefore, the height at the time of storage platforms can make lower, it is possible to ensure good visibility.

Further, the platform that houses by standing at folded into two states, a first platform home to a substantially horizontal state from the substantially upright posture with the second platform
It can be pivoted, and may be able to pivot from the folded state to the second platform hand such state to a substantially horizontal state, returning the platform to its original state. Further, in the vehicle lift device of the present invention,
Adopts the above-mentioned drive control mechanism.
Malfunction due to malfunction of the platform and the second platform
Can be eliminated.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1, 2 and 3 have shown a vehicle lift system A, the lift device A vehicular opening of the vehicle B (e.g., vehicle rear portion of the opening that is opened and closed by the rear gate) pair provided Parallelogram link mechanism 10
A pair of left and right side frames 30 that are raised and lowered by each parallelogram link mechanism 10 and support the platform 20 at the lower end in a horizontal state; a lifting drive device 40 that drives each link mechanism 10; A stopper device 50 provided at an end for restricting a wheelchair (not shown) from moving backward when ascending and descending;
1 and a handrail device 70 that is attached to each side frame 30 and that can be stored as shown by the phantom line in FIG. 1. And a storage lock device 80 and the like for fixing the platform 20 in a state of being folded and stored as shown by the phantom lines in FIGS. 1 and 3.

As shown in FIG. 1, each link mechanism 10 has a bracket 11 fixed to a floor B1 of a vehicle body and an upper mounted on the bracket 11 at a base end thereof so as to be rotatable in a vertical direction. Arm 12 and lower arm 13
And a stay arm 14 rotatably attached to the distal ends of both arms 12, 13. The stay arm 14 is formed integrally with the side frame 30. The lower arm 13 is configured so that a part thereof is accommodated in the upper arm 12.

As shown in FIGS. 1, 2 and 3, the platform 20 is rotatably mounted on the lower ends of both side frames 30 via shafts 29 and is provided at the lower ends of the side frames 30. A front platform 21 held in a state shown in FIG. 1 (substantially horizontal state) by a support plate 31, and brackets 23, 2
4 and a rear platform 2 which is rotatably assembled via pins 25 and is held in the state (substantially horizontal state) of FIG.
1 and 3, and can be stored between the two side frames 30 by being folded into two by a storage driving device 90 to be described later, as shown by a virtual line in FIGS.

As shown in FIGS. 1 and 7, the lifting drive device 40 is attached to the bracket 11 at the base end.
A hydraulic cylinder 41 rotatably connected to the base end of the upper arm 12 and rotatably connected to a distal end intermediate portion of the upper arm 12 and housed between the arms 12 and 13; And a hydraulic power package 110 for controlling the supply and discharge of hydraulic oil to and from an electric motor 101 provided in the hydraulic power package 110.
F operation and operation of the electromagnetic switching valve 102 (solenoid SOL1
Control circuit 2 shown in FIG.
When the hydraulic pump 103 is driven by the activation of the electric motor 101 and the platform 20 or the like is moved to the rising end by the operation of the hydraulic cylinder 41, the limit switch L shown in FIGS.
S1 is turned on.

The storage driving device 90 is shown in FIGS.
3, a double-acting hydraulic cylinder 91 incorporated in the right side frame 30 in FIG. 3, a rack 92 fixed to the rod end of the hydraulic cylinder 91 and driven by the hydraulic cylinder 91, A gear 93 rotatably assembled in the frame 30 and meshing with the rack 92
And a gear 94 rotatably mounted on the shaft 29 supporting the platform 20 and meshing with the gear 93 (not meshing with the rack 92), and the front platform 21
A gear 96 integrated with the pin 25 which is incorporated in the side of the
4, a double-acting hydraulic cylinder 97 incorporated in the left side frame 30 of FIG. 3 to rotate the shaft 29 supporting the platform 20, and an intermediate portion between the shaft 29. A drive mechanism including a swing rod 98 and the like fixed to the part and inserted into the front platform 21;
A hydraulic power package 110 and electromagnetic switching valves 121 and 122 shown in FIG.
Electric motor 101 included in hydraulic power package 110
ON and OFF operations and the operation of the electromagnetic switching valves 121 and 122 (solenoids SOL2, SOL3, SOL4, SOL5
Control circuit 2 shown in FIG.
The limit switch LS2 is turned on when the front platform 21 is moved to the upright storage position by the operation of the hydraulic cylinder 97, and the rear platform 22 is opened by the operation of the hydraulic cylinder 91. The limit switch LS3 is turned on when moved to the position, and the limit switch LS4 is turned on when moved to the closed position.

In this embodiment constructed as described above, when both platforms 21 and 22 are in the state shown by the solid line in FIG.
1, LS2 and LS3 are closed and the electric control circuit 200
Battery switch 201 and auxiliary switch 202
Is closed and the lift push button switch 203 is pressed to the lowered position (the upper position in FIG. 8), the solenoid SOL1 of the electromagnetic switching valve 102 is excited, the electromagnetic switching valve 102 opens, and hydraulic oil is discharged from both hydraulic cylinders 41. Then, both hydraulic cylinders 41 contract and the platform 20 descends by its own weight or the like. When the lift push button switch 203 is pushed to the raised position (the lower position in FIG. 8), the magnet switch 20
4 is turned on, the electric motor 101 starts, and the hydraulic pump 1
03 is driven, hydraulic oil is supplied to both hydraulic cylinders 41, and both hydraulic cylinders 41 are extended and the platform 2
0 rises.

Also, both platforms 21 and 22 are shown in FIG.
When the folding push button switch 205 is pushed to the closed position (the lower position in FIG. 8), the magnet switch 204 is turned on, the electric motor 101 is started, and the hydraulic pump 103 is turned on. Is driven, the solenoid SOL4 of the electromagnetic switching valve 122 is excited, and hydraulic oil is supplied to the head-side oil chamber of the hydraulic cylinder 91 to extend the hydraulic cylinder 91. As a result, the rack 92 and both gears 93 and 94 move in the direction of the arrow in FIG.
The link mechanism 95 and the gear 96 move in the direction of the arrow in FIG. 5, and the rear platform 22 is folded and closed in the state shown by the imaginary line in FIGS. In this state, since the limit switch LS4 is closed, if the storage push button switch 206 is pressed to the upright position (the lower position in FIG. 8), the magnet switch 204 is turned on, the electric motor 101 is started, and the hydraulic pump 103 is driven. Then, the solenoid SOL2 of the electromagnetic switching valve 121 is excited to supply hydraulic oil to the rod-side oil chamber of the hydraulic cylinder 97, so that the hydraulic cylinder 97 contracts. As a result, the swing rod 98
Swings in the direction of the arrow in FIG.
Are stored upright as shown by the imaginary line in FIG. In this state, the front platform 21, the side frame 30, and the lower arm 13 can be integrally connected and locked by operating the lever of the storage lock device 80.

When the storage push button switch 206 is pressed to the horizontal position (upper position in FIG. 8) in a state where the lock by the storage lock device 80 is released, the magnet switch 2 is pressed.
04 turns on, the electric motor 101 starts, and the hydraulic pump 1
03 is driven, the solenoid SOL3 of the electromagnetic switching valve 121 is excited, and hydraulic oil is supplied to the head-side oil chamber of the hydraulic cylinder 97, so that the hydraulic cylinder 97 is extended. As a result, the swing rod 98 swings toward the position shown in FIG. 6, and the two platforms 21 and 22 stored upright as shown by the imaginary lines in FIG. 1 return to the horizontal state.
In this state, when the folding push button switch 205 is pressed to the open position (upper position in FIG. 8), the magnet switch 20 is pressed.
4 is turned on, the electric motor 101 starts, and the hydraulic pump 10
3 is driven, the solenoid SOL5 of the electromagnetic switching valve 122 is excited, and hydraulic oil is supplied to the rod-side oil chamber of the hydraulic cylinder 91 so that the hydraulic cylinder 91 contracts. As a result, the rack 92 and the two gears 93 and 94 move in the direction opposite to the arrow in FIG. 4, the link mechanism 95 and the gear 96 move in the direction opposite to the arrow in FIG. 5, and the rear platform 22 is in the solid line state in FIGS. Return to

Further , in this embodiment, as is apparent from the configuration of the electric control circuit 200 shown in FIG. 8, when both platforms 21 and 22 are not in the state shown by the solid lines in FIGS. When the button 20 is operated, the platform 20 is not moved up and down, and when the front platform 21 is not in the horizontal state or when the platform 20 is not at the rising end, even if the folding push button switch 205 is operated, the rear platform 22 is operated. The rear platform 22
When the storage pushbutton switch 206 is not in the folded state shown by the imaginary line in FIGS. 1 and 4 or when the platform 20 is not at the rising end, the front platform 21 does not move even if the storage pushbutton switch 206 is operated. The malfunction caused by the operation does not occur.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an embodiment of a vehicle lift device according to the present invention.

FIG. 2 is a plan view of the vehicle lift device shown in FIG.

FIG. 3 is a rear view of the vehicle lift device shown in FIG. 1;

FIG. 4 is an enlarged side view showing a part of the storage driving device.

FIG. 5 is an enlarged side view of a member interlocked with the member shown in FIG.

FIG. 6 is an enlarged side view showing another part of the storage driving device.

FIG. 7 is a hydraulic circuit diagram of the vehicle lift device according to the present invention.

FIG. 8 is an electric circuit diagram of the vehicle lift device according to the present invention.

[Explanation of symbols]

10: parallelogram link mechanism, 20: platform,
21 ... the front platform (first platform),
22 ... the rear platform (second platform),
Reference numeral 30: side frame, 40: lifting drive, 41: hydraulic cylinder, 90: storage drive, 91: hydraulic cylinder (first driving means), 97: hydraulic cylinder (second driving means), A: vehicle lift device .

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Orito 25, Ueikeike, Yoshiwara-cho, Toyota-shi, Aichi Araco Corporation 91951 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60P 1/44

Claims (1)

(57) [Claims] 1. A pair of left and right sides provided at an opening of a vehicle.
Platform supported at the lower end of the frame so that it can move up and down
And the plateau attached to the side frame.
A pair of left and right parallel 4 for raising and lowering the system by driving the driving device
A side link mechanism, and the platform is
And is installed in a rotatable manner between
A first platform which is held substantially upright;
It is rotatably mounted on the tip of the first platform.
Same when the first platform is held in a substantially horizontal state
Almost horizontal or folded with respect to the first platform
Composed of a second platform held in a state
In the dual use lift device, the first platform and the second platform are both
Is not held horizontally at the raised position of
Platform is disabled, and the first platform
When the robot is not held horizontally or when the first
When the platform is not held at the rising end, the second platform
The platform is prevented from rotating, and the second
When the platform is not in the folded state or
Platform 1 and Platform 2 are both on the rising edge
When the first platform does not rotate,
Vehicle riff characterized by adopting an improved drive control mechanism
Device.