JP3299658B2 - Lift mounted on vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A lift (elevating device) mounted on a vehicle is disclosed, for example, in Japanese Utility Model Laid-Open Publication No. 2-13836. , A movable member (bracket) provided to be able to move forward and backward, an actuator for moving forward and backward moving the movable member, and a four-joint link mechanism configured by connecting the platform to the movable member using two connecting arms. Guide means for moving the movable member between the floor and the ground contact surface while guiding the operation of the four-joint link mechanism accompanying the advance / retreat movement of the movable member, while maintaining the platform in a substantially horizontal state. A driving device for operating the four-bar linkage with the moving actuator and the guide means to raise and lower the platform is configured.

Japanese Patent Application Laid-Open No. 6-183296 discloses a configuration in which a platform is connected to a bracket attached to a floor of a passenger compartment having an opening by using two connecting arms extending to the outside of the passenger compartment. A lift mounted on a vehicle equipped with a four-bar linkage and a drive device for operating the four-bar linkage to raise and lower the platform is shown.

[0004]

In the lift disclosed in Japanese Utility Model Laid-Open Publication No. Hei 2-13836, the platform is connected to a connecting plate connected to the extending ends of the connecting arms. Is referred to as a side plate) and a receiving plate (referred to as a side plate in this publication) which is mounted on the connecting plate so as to be horizontally movable along the longitudinal direction of the connecting arm and is temporarily fixed at an appropriate position by a check mechanism. , Which is referred to as a platform plate), and when the platform is moved up and down, the connecting plate and the receiving plate are integrally moved up and down along an arc-shaped movement locus.

In the lift described in Japanese Patent Application Laid-Open No. 6-183296, a platform is connected to a connecting plate (referred to as a stay arm in this publication) connected to the extending ends of the connecting arms. ), And a foldable receiving plate which is rotatably mounted to the lower end of the connecting plate via a shaft and held in a horizontal state by a support plate provided at the lower end of the connecting plate (in the publication, , Which is referred to as a platform). When the platform is moved up and down, the connecting plate and the receiving plate are integrally moved up and down along an arc-shaped movement trajectory.

Therefore, when raising and lowering a wheelchair in which a disabled person is seated using each of the above-mentioned lifts, the disabled person seated in the wheelchair senses the vertical movement (vertical direction) on the platform and at a right angle to the vertical direction. The user experiences the movement in the direction (horizontal direction), which causes a great sense of incongruity and a poor ride quality. The present invention has been made to address the problems described above, the relative Its purpose is for the connecting plate Ri by the operation of the four-bar linkage mechanism to nest pre <br/> over bets plat- Home to move in the horizontal direction is to provide a lift that can substantially vertically raised and lowered relative to the ground plane nest plate.

[0007]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, there is provided on one side of a vehicle body.
After moving forward on the floor of the passenger compartment that is open to the outside at the opening
Removable brackets and each base end
The platform is supported horizontally by two connecting arms that connect the parts vertically rotatable and extend outside the vehicle compartment
A four-link mechanism, located at the bracket forward end
In a lift equipped in a vehicle provided with a driving device for operating the four-bar linkage mechanism to move the platform up and down in a state in which the platform is turned, the platform is turned vertically to the extending ends of the two connecting arms. Movably connected
A connecting plate, and a receiving plate mounted on the connecting plate so as to be horizontally movable along the longitudinal direction of the connecting arm.
Both ends are rotatably connected to the space and the rear end of the receiving plate.
Provide a connected auxiliary arm to raise and lower the platform
Sometimes the connecting portions of both connecting arms with the bracket are supported.
The horizontal component of the circular motion caused by the rotation
The connecting plate is moved by the auxiliary arm in the canceling direction.
Move horizontally relative to the receiving plate
I did it.

Further, in the invention of claim 2, the vehicle body
Cabin floor open to the outside through an opening on one side
A bracket that can be moved forward and backward
The platform is pivotally connected to each base end in the vertical direction, and the platform is connected by two connecting arms extending toward the outside of the cabin.
The four-bar linkage that supports horizontally and the bracket is
In a lift provided in a vehicle including a driving device for operating the four-bar linkage mechanism to move the platform up and down in a state of being located at a leading end, the platform is attached to an extending end of the two connecting arms. Rotate vertically
Constitutes a connecting plate which is connected to the standing, the nest plates assembled horizontally movable along the longitudinal direction of the connecting arm to the connecting plate, and one of the connecting arms
The extension end of one of the connection arms is connected to the connection plate.
A drive gear that rotates around the connection is provided and
When the two connecting arms are operated, the driving force is applied from the driving gear.
Provided rack teeth are integrally provided on the receiving plate.
When the platform is moved up and down,
Rotation around the connection with the bracket
The connection in a direction to offset the horizontal component of the
The plate is opposed to the receiving plate by the driving gear.
And relatively driven in the horizontal direction .

[0009]

In the lift according to the first aspect of the present invention, the platform is moved up and down while the platform is kept substantially horizontal by operating the four-bar linkage with the driving device while the bracket is held at the forward end. When the platform is raised and lowered , the arc of both connecting arms
With the movement, the auxiliary arm moves the connecting plate
Moves horizontally relative to the home receiving plate
Let it .

Therefore, the auxiliary arm is so arranged that the horizontal movement amount of the connecting plate caused when the platform is raised and lowered substantially cancels out the horizontal component of the circular motion of the connecting plate caused by the rotation of the two connecting arms about the bracket. For example, in the case of a configuration in which the platform is raised by turning both connecting arms from the state where the extending end is downward to be in a substantially horizontal state, the receiving plate in the auxiliary arm is provided. as the bracket side of the rotatable connection portion of the rotatable connecting part connecting the arms with, nest by connecting pre <br/> over preparative at elevated platform so as to horizontally move the bracket side The plate should be raised and lowered almost perpendicular to the ground plane.
Can be. Also, in the case of the configuration platform is raised by Invite example example two joining arms is pivoted to the extended end portion in a state where the upward from a substantially horizontal position, rotation of the nest plate in the auxiliary arm The free connecting part is set on the opposite side of the bracket from the rotatable connecting part with the connecting arm, and the receiving plate moves horizontally to the opposite bracket side when the platform is raised, so that the receiving plate can be moved up and down when the platform is raised and lowered. Can be raised and lowered substantially perpendicularly to the ground plane.

On the other hand, in the lift according to the second aspect of the present invention, the platform can be moved up and down while maintaining the substantially horizontal state by operating the four-bar linkage with the driving device while holding the bracket at a predetermined position. the drive gear by rotating the relative movement between the coupling plate of the two joining arms and platform that occurs during lifting of the platform, Ri by to transmit the driving force of the driving gear to the rack teeth provided on the nest plate Consolidated play
It can be moved the door relatively water <br/> horizontal direction relative to the nest plate plat- home.

Therefore, when the platform is moved up and down, it is caused by the rotation of the two connecting arms about the bracket as a fulcrum.
Consolidated pre in a direction substantially canceling the horizontal component of the circular arc movement that
The gears are driven in the horizontal direction with the drive gear described above.
Thus, the receiving plate can be raised and lowered substantially perpendicularly to the ground surface.

Therefore, when a wheelchair with a disabled person is lifted and lowered by using the lift according to the first and second aspects of the present invention, the disabled person on the wheelchair is moved up and down (vertically) on a receiving plate of the platform. However, the user can hardly feel the movement in the direction perpendicular to the vertical direction (horizontal direction), and can obtain a good ride comfort with almost no uncomfortable feeling.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a lift mounted on a vehicle according to the first aspect of the present invention. The lift 100 of this embodiment is opened and closed by a rear part of a vehicle compartment B, that is, a rear gate (not shown). The guide rail 1 is provided on the floor D of the portion having the opening C, and is a pair of left and right parallel guide rails 1.
Brackets 13 are attached to 1 and 12. Each of the guide rails 11 and 12 is arranged along the front-rear direction of the vehicle such that the rear end is located near the opening C of the vehicle compartment B, and is fixed to the floor D of the vehicle compartment B.

The bracket 13 has standing plates 13 at both left and right ends.
a, 13b, and guide rails 11 using guide rollers 14, 15, 16 rotatable on the standing plate 13a.
Is mounted so as to be movable in the front-rear direction.
3b, it is mounted on the guide rail 12 so as to be movable in the front-rear direction by using guide rollers 17, 18 and 19 which are rotatable, and is moved forward and backward by the bracket driving device 20 and at the opening C of the vehicle compartment B. The illustrated illustrated working positions (rear ends of the guide rails 11 and 12) and the storage position (the guide rail 1) that has been moved by a predetermined amount from the opening C of the cabin B into the cabin.
1 and 12).

As shown in detail in FIG. 2, the bracket driving device 20 is alternately arranged on the floor D of the vehicle compartment B in the direction in which the bracket 13 moves forward and backward, and is mounted on the floor D by the cylinder bodies 21a and 22a. Fixed single-acting hydraulic cylinder 21 for forward drive and single-acting hydraulic cylinder 22 for reverse drive
And a pulley 2 rotatably provided at a driving portion of each of the cylinders 21 and 22, that is, at a distal end of each of the rods 21 b and 22 b.
A wire (wire) 2 in which the intermediate portions are hung on the wires 3 and 24 and the respective ends are fixed to the floor D of the passenger compartment B and the bracket 13, respectively.
The bracket 13 can be moved to the illustrated working position and held by supplying hydraulic oil to the cylinder 21 and discharging hydraulic oil from the cylinder 22. And the hydraulic oil is discharged from the cylinder 21 so that the bracket 13 can be moved to the storage position and held.

The standing plates 13a, 1a of the bracket 13
3b has two connecting arms 31, 32 and 3 respectively.
Each connecting plate 41 (only one is shown) of the platform 40 is connected via the third and third 34, and each of the upright plates 13a and 13b of the bracket 13 and two connecting arms 31, 32, 33 and 34 are connected to each other. A pair of left and right four-bar linkages S is provided by each connecting plate 41 of the platform 40.
1 and S2 are configured. In addition, each connecting arm 31,
Rollers 35 and 36 as cam followers are rotatably mounted at a position closer to the bracket 13 than an intermediate portion of the roller 33. Each of the rollers 35 and 36 has a cam member 5 attached thereto.
1 and 52 are respectively engaged. A guide roller 37 (only one is shown) that engages with each of the guide rails 11 and 12 when the platform 40 is stored in the vehicle interior is rotatable at an intermediate portion between the connecting arms 31 and 33. It is attached to.

Each of the cam members 51 and 52 is slidably mounted between a pair of side plates 53 and 54 and 55 and 56 fixed to the floor D of the passenger compartment B together with the guide rails 11 and 12. Guide holes 51a penetrating through cam members 51 and 52
(The guide holes of the cam member 52 are not shown) and are fixed to the side plates 53, 54 and 55, 56 by guide pins 57, 58, respectively. It is provided to be able to move forward and backward. Further, each of the cam members 51 and 52 is provided on the floor D of the passenger compartment B on the cylinder body 61.
The rods 61b and 62b of the double-acting hydraulic cylinders 61 and 62 are connected to the tips of the rods 61b and 62b of the double-acting hydraulic cylinders 61 and 62 as cam driving devices fixed by the couplings 63 and 64, respectively. , 62b can be moved toward the outside of the passenger compartment by being driven forward,
When the rods 61b, 62b of the double-acting hydraulic cylinders 61, 62 are driven backward, they can move toward the vehicle interior.

In this embodiment, the platform 40 is composed of a pair of left and right connecting plates 41 (only one is shown), and supporting rollers 43 and 44 that are rotatable at both left and right ends on both connecting plates 41. A receiving plate 45 is mounted so as to be horizontally movable in the front-rear direction of the vehicle via only one of them, and a front end of the receiving plate 45 is provided with each auxiliary arm 46 (only one is shown). ) Are connected to the intermediate portions of the connecting arms 32 and 34. Each auxiliary arm 46 connects the receiving plate 45 to both connecting plates 41 when the platform 40 is raised.
To the front and the platform 40
The receiving plate 45 is horizontally moved rearward with respect to the two connecting plates 41 at the time of lowering of the receiving plate 4.
5 is located forward (on the side of the bracket 13) of the rotatable connection with each of the connection arms 32 and 34.

Guide rollers 47, 48 (only one of which is shown) rotatably engaged with the guide rails 11, 12 when the platform 40 is stored in the vehicle interior, are rotatably provided on each connecting plate 41. It is attached to.
At the rear end of the receiving plate 45, a plate 49 is rotatably and fixedly mounted.
Numeral 9 is a stopper that restricts the backward movement of a wheelchair (not shown) placed on the platform 40 while being held in the state shown by the imaginary line in FIG. 1 when the platform 40 is raised and lowered. As shown by the solid line in FIG.
As shown by a solid line, a slope is formed at the tip portion in contact with the ground plane G to facilitate the getting on and off of the wheelchair to the receiving plate 45 of the platform 40.

In this embodiment constructed as described above, a wheelchair with a disabled person is placed on the receiving plate 45 of the platform 40 in the state shown by the solid line in FIG. Thereafter, when the double-acting hydraulic cylinders 61 and 62 are driven forward, the cam members 51 and 5 are driven.
2 is moved from the solid line position in FIG. 1 to the imaginary line position, and the connecting arms 31 and 33 are moved from the solid line position to the imaginary line position in FIG. The connecting arms 32 and 34 rotate upward from the solid line position in FIG. 1 to the virtual line position in FIG. 1 with the connecting portion with the bracket 13 as a fulcrum. While maintaining the horizontal state, it rises from the solid line position in FIG. 1 to the virtual line position.

Further, at this time, the two joining play and tilting the phantom line state each auxiliary arm 46 from the solid line state of FIG. 1
Against the door 41 to the nest plate 4 5-flops rat Home 40
Before moving relatively water flat forward Te. Therefore, at this time, the horizontal component of the circular arc motion arising by the rotation that the fulcrum bracket 13 of the connecting arms 31 to 34 by the horizontal moving amount of the connecting plate 45 in the platform 40 is substantially canceled out, the platform 40 The receiving plate 45 rises substantially perpendicular to the ground plane G.

Further, in the lift-up state shown by the phantom line in FIG. 1, the hydraulic oil is supplied to the single-acting hydraulic cylinder 22 and the operating oil is discharged from the single-acting hydraulic cylinder 21 so that the single-acting hydraulic cylinder 22 is When driven, the bracket 13 is moved forward from the illustrated working position toward the storage position in the passenger compartment B, and the connection arms 31 to 34, the platform 40, and the like in the lift-up state indicated by the phantom line in FIG. It is stored at a predetermined position in the vehicle compartment B. Thereafter, when the double-acting hydraulic cylinders 61 and 62 are driven backward, the two cam members 51 and 62 are moved.
52 is further moved forward from the imaginary line position of FIG. 1 through the solid line position, and is stored at a predetermined position in the vehicle interior B. In this storage state, the opening C can be closed by closing the rear gate. It should be noted that the platform 40 described above
During retract and, the connecting plate 41 of the guide roller 37 and the platform 40 assembled to the connection arms 31 and 33
Guide rollers 47 and 48 mounted on each guide rail 1
1 and 12 so that the connecting arms 31 to 34 and the platform 40 in the lift-up state are horizontal.
Can be moved in a circular smooth and held in state.

In this embodiment, the operation is the reverse of the operation described above, that is, while supplying the pressure oil to the single-acting hydraulic cylinder 21 with the rear gate opened and the opening C opened, the single-acting hydraulic cylinder The hydraulic oil is discharged from the cylinder 22 to drive the single-acting hydraulic cylinder 21 and to drive the double-acting hydraulic cylinders 61 and 62 forward, thereby connecting the lift-up connecting arms 31 to 34 and the platform 40 in the storage position. FIG. 1 shows the two cam members 51 and 52.
Can be moved to the position indicated by the phantom line, and in this state, the two double-acting hydraulic cylinders 61, 62 are driven backward to move both cam members 51, 52 from the imaginary line position in FIG. 1 to the solid line position. By doing so, it is possible to move the connection arms 31 to 34, the platform 40, and the like in the lift-up state shown by the imaginary line in FIG. 1 to the position shown by the solid line in FIG. At this time, both connecting plate tilts in solid state from each of the auxiliary arms 46 the virtual line state of FIG. 1
41 for the nest plate 4 5-flops rat Home 40
It is moved relatively water flat rearward, thereby connecting the horizontal component of the arcuate movement of the arms 31 to 34 are substantially canceled out, nest plate 45 is the ground plane of the platform 40 G
Descends substantially perpendicular to.

By the way, in the lift 100 of the present embodiment, as described above, the cam members 51 and 52 which are moved forward and backward by the double-acting hydraulic cylinders 61 and 62 with the bracket 13 held at the working position shown in FIG. linkage S1, S2 can be raised and lowered while maintaining the platform 40 in a substantially horizontal state by operating the by auxiliary arms 46 during lifting of the platform 40
Against the connecting plate 41 to the nest plate 4 5 platforms 40 can be moved relatively P water horizontal direction.

[0026] Thus, the bracket 13 in the horizontal direction movement amount is connecting arm 31 to 34 of the connecting plate 4 1 described above occurs when the elevation of the platform 40 as described above
By providing the auxiliary arm 46 so as to substantially cancel the horizontal component of the circular arc motion arising by the rotation that the fulcrum, substantially vertically nest plate 45 during the lifting of the platform 40 with respect to the ground surface G Can be raised and lowered. For this reason, when raising and lowering the wheelchair on which the disabled person is sitting by using the lift 100, the disabled person sitting on the wheelchair experiences a vertical (vertical) movement on the receiving plate 45 of the platform 40. It is possible to obtain a good riding comfort with almost no movement in the direction perpendicular to the vertical direction (horizontal direction) and almost no discomfort.

The lift 100 according to the present embodiment is provided on the floor D of the passenger compartment B through the opening C of the passenger compartment B so as to be able to move in and out of the passenger compartment, and connects the connecting arms 31 and 33 and the rollers 35 and 36. The platform 40 is moved up and down by moving the cam members 51 and 52 engaged with each other through the double-acting hydraulic cylinders 61 and 62.
Since all the constituent members such as the cam members 51 and 52, the connecting arms 31 to 34, and the platform 40 can be stored in the vehicle interior, the existing external constituent members of the vehicle (for example, the rear bumper E shown in FIG. 1) can be used. It can be equipped on vehicles without modification. Further, the cam members 51, 5 which are moved forward and backward by the double-acting hydraulic cylinders 61, 62, respectively.
Since the platform 40 is moved up and down by 2, an optimum lifting operation can be obtained by the shape of the cam.

In the lift 100 of this embodiment, the bracket 1 is driven by the bracket driving device 20 having the cylinders 21 and 22 and the wires 25 and 26.
3 is moved forward and backward and is held at the working position and the storage position. The moving amount of the bracket 13 is approximately 2 with respect to the stroke of each of the cylinders 21 and 22 (the moving amount of the tip of each of the rods 21b and 22b). Since it can be doubled, it can be implemented using a small cylinder with a small stroke (cylinder whose stroke is approximately half the moving amount of the bracket 13), and can be implemented in a small installation space.

In the above embodiment, the cam members 51 and 52 which are moved forward and backward by the double-acting hydraulic cylinders 61 and 62, respectively.
Although the four-bar linkages S1 and S2 are operated by the above, the driving device for operating the four-bar linkages S1 and S2 may have another configuration. For example, as shown in FIG. 31 is engaged with a winding / rewinding machine (not shown) (not shown) which has one end locked to the extension end 31a and the other end mounted to the floor D (this can be mounted to the bracket 13). It is also possible to implement the present invention by operating the four-bar linkages S1 and S2 with the stranded wires 69. Since the configuration of the lift shown in FIG. 5 other than the above-described configuration is substantially the same as the configuration of the lift 100 shown in FIGS. 1 to 4, the same reference numerals are given and the description thereof will be omitted.

In the lift shown in FIG. 5, the platform 40 can be lifted up by winding up a wire (wire) 69 by a winding / rewinding machine in the illustrated state. By rewinding the wire (wire) 69 by the winding / rewinding machine in the lift-up state, the platform 40 can be lowered and lifted down. In the lift-up state, the bracket 13 is moved toward the storage position by the bracket driving device, and at the same time, the wire (wire) 6 is moved by the winding / unwinding machine.
Winding and rewinding 9 (this operation is unnecessary when the winding and rewinding machine is mounted on the bracket 13), whereby the lift 100 shown in FIGS.
Similarly, the platform 40 in the lift-up state can be stored in the vehicle interior.

In the above embodiment, one end of the auxiliary arm 46 is rotatably connected to the intermediate portion between the connecting arms 32 and 34, but this is rotatably connected to the intermediate portion between the connecting arms 31 and 33. It is also possible to implement the present invention. Further, in the above embodiment, the platform 40
Is supported by a pair of left and right four-bar link mechanisms S1 and S2, but the present invention may be implemented by supporting the platform 40 by one of the left and right four-bar link mechanisms S1 and S2. It is possible.

In the above embodiment, the rollers 35, 36 are provided on the upper connecting arms 31, 33, and the cam members 51, 52 are connected to the connecting arms 3 via the rollers 35, 36.
1 and 33, the lower connecting arms 32 and 34 are provided with rollers 35 and
1, 52 are connected to the connecting arms 32,
It is also possible to carry out the configuration by engaging the cam member with the connecting arm so that the cam member can be directly slidably engaged with the connecting arm without the rollers 35 and 36. In the above-described embodiment, the cam members 51 and 52 are moved forward and backward by the double-acting hydraulic cylinders 61 and 62. However, the cam members are driven by another driving device such as a screw feed mechanism operated by an electric motor. It is also possible to carry out the configuration by moving it forward and backward.

In the above embodiment, the cylinder 2
With respect to the bracket 13 which is moved forward and backward by the bracket driving device 20 provided with the brackets 1 and 22 and the ropes (wires) 25 and 26 and held at the working position and the storage position,
The platform 40 is raised by turning the connecting arms 31 to 34 from the state in which the extending end is downward (solid line state in FIG. 1) to a substantially horizontal state (virtual line state in FIG. 1). Although the present invention is applied to the lift 100, the present invention relates to a lift disclosed in, for example, JP-A-6-183296, that is, a connecting arm that constitutes a four-bar linkage is extended from a substantially horizontal state to an extended end. The present invention can be applied to a lift having a configuration in which the platform is raised by being rotated to a state where the lifter is rotated. The receiving plate moves horizontally away from the connecting plate when the platform is lifted. The Rukoto, can be substantially vertically lifting the nest plate with respect to the ground plane during the lifting of the platform.

FIGS. 6 and 7 show an embodiment of a lift mounted on a vehicle according to the second aspect of the present invention. In the lift 100 of this embodiment, the auxiliary arm 46 of each of the above embodiments is used instead. A drive gear 91, rack teeth 92, and a speed increasing gear 93 are employed. The driving gear 91 is connected to the connecting arm 3.
2 is provided integrally with the extension end, and the center thereof coincides with the connection center between the connection arm 32 and the connection plate 41. The rack teeth 92 receive a driving force from the drive gear 91 when the connection arm 32 is operated, and are provided integrally on one upper surface of the receiving plate 45, and move the receiving plate 45 with respect to the connecting plate 41. Direction. The speed increasing gear 93 speeds up the rotation of the driving gear 91 with respect to the connection plate 41 and transmits the rotation to the rack teeth 92. As shown in FIG. 7, the speed increasing gear 93 and the small diameter gear 93a which always mesh with the driving gear 91. , A large-diameter gear 93b constantly meshing with the rack teeth 92. These two gears 93a, 93b are coaxially mounted on a support shaft 94 rotatably mounted on the connecting plate 41, and are integrally formed by a key 95. It is rotatably connected. For other configurations,
Since the configuration is substantially the same as that of the lift 100 shown in FIGS. 1 to 4, the same reference numerals are given and the description thereof will be omitted.

In the embodiment of FIGS. 6 and 7 constructed as described above, the four-joint link mechanism is provided by the cam member 51 which is moved forward and backward by the double-acting hydraulic cylinder 61 with the bracket 13 held at the illustrated working position. By operating S1, the platform 40 can be raised and lowered while being kept substantially horizontal, and the connecting arms 31 and 32 and the platform 4 which are generated when the platform 40 is raised and lowered.
The drive gear 91 is moved by the relative movement of the
Is rotated with respect to the connecting plate 41, and the driving force of the driving gear 91 is transmitted to the rack teeth 92 via the speed increasing gear 93, whereby the receiving plate 4 of the platform 40 is rotated.
5 can be moved in the horizontal direction with respect to the connecting plate 41.

Therefore, the horizontal movement amount of the receiving plate 45 generated when the platform 40 is raised and lowered is a horizontal component of the circular motion of the connecting plate 41 generated by the rotation of the connecting arms 31 and 32 about the bracket 13 as a fulcrum. If the speed ratio between the drive gear 91 and the rack teeth 92 is set by the speed-increasing gear 93 so as to substantially cancel each other, the receiving plate 45 is moved up and down substantially perpendicularly to the ground plane G when the platform 40 is raised and lowered. be able to. For this reason, when raising and lowering the wheelchair on which the disabled person is sitting by using the lift 100, the disabled person sitting on the wheelchair experiences a vertical (vertical) movement on the receiving plate 45 of the platform 40. The movement in the direction perpendicular to the vertical direction (horizontal direction) is hardly felt,
It is possible to obtain a good ride with almost no discomfort.
In addition, by appropriately setting the diameter of the driving gear 91,
When the gear ratio between the drive gear 91 and the rack teeth 92 can be set so as to substantially cancel the horizontal component of the circular motion of the connecting plate 41, the speed increase gear 93 may be omitted. It is possible.

[Brief description of the drawings]

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

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

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG.

FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG.

FIG. 5 is a side view showing another embodiment of the lift according to the first aspect of the present invention.

FIG. 6 is a side view showing one embodiment of the lift according to the invention of claim 2;

7 is an enlarged sectional view taken along line 7-7 in FIG. 6;

[Explanation of symbols]

100 lift, 13 bracket, 31-34 connecting arm, 40 platform, 41 connecting plate,
45: receiving plate, 46: auxiliary arm, 51, 52 ...
Cam members, 61, 62: double-acting hydraulic cylinder, 91: drive gear, 92: rack teeth, 93: speed-up gear, B: cabin, C
... opening, D ... floor, G ... ground plane, S1, S2 ... four-bar linkage.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Orito Inside Araco Co., Ltd. 25, Ueike-ike, Yoshihara-cho, Toyota-shi, Aichi Pref. (72) Inventor Yoshito Shibata 25, Ueikeike, Yoshiwara-cho, Toyota-shi, Aichi Araco Co., Ltd. (56) References JP-A-52-95414 (JP, A) JP-A-5-286389 (JP, A) JP-A-7-69120 (JP, A) JP-A-7-61276 (JP, A) JP-A-54-53416 (JP, A) JP-A-6-183296 (JP, A) 57733 (JP, U) Japanese Utility Model Application Showa 54-141606 (JP, U) Japanese Utility Model Application Utility Model No. 2-13836 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60P 1/44 B60P 3 / 00

Claims (3)

(57) [Claims] An opening is provided on one side of a vehicle body to open to the outside.
Bra that was installed forward and backward to be able to on the floor of the passenger compartment to be released
The base and the bracket are vertically pivoted on the bracket.
Linked to standing to two connecting arms of which extend toward the passenger compartment
A lift mounted on a vehicle including a four-bar linkage that supports the platform more horizontally, and a driving device that operates the four-bar linkage with the bracket positioned at the forward end to raise and lower the platform. In the above, the platform is attached to the extending end of the both connecting arms.
A connecting plate rotatably connected in a vertical direction , and a receiving plate mounted on the connecting plate so as to be horizontally movable along a longitudinal direction of the connecting arm, and
One of the intermediate portions of the connecting arm and the receiving plate
At the rear end, an auxiliary arm with both ends rotatably connected is provided.
When the platform is moved up and down,
Rotation around the connection with the bracket
The connection in a direction to offset the horizontal component of the
The plate is connected to the receiving plate by the auxiliary arm
A lift mounted on a vehicle, wherein the lift moves in a horizontal direction relative to the vehicle. 2. An exterior opening at an opening provided on one side of a vehicle body.
Bra that can be moved forward and backward on the floor of the passenger compartment
The base and the bracket are vertically pivoted on the bracket.
Linked to standing to two connecting arms of which extend toward the passenger compartment
A lift mounted on a vehicle including a four-bar linkage that supports the platform more horizontally, and a driving device that operates the four-bar linkage with the bracket positioned at the forward end to raise and lower the platform. In the above, the platform is attached to the extending end of the both connecting arms.
A connecting plate rotatably connected in a vertical direction , and a receiving plate mounted on the connecting plate so as to be horizontally movable along a longitudinal direction of the connecting arm, and
The extending end of one of the connecting arms is connected to the connecting arm.
Drive gear that rotates around the connection with the connection plate
And the drive teeth when the two connecting arms are actuated.
The receiving plate is provided with rack teeth to which driving force is applied from a vehicle.
At the time of raising and lowering the platform.
The connecting part of both connecting arms with the bracket was used as a fulcrum.
To offset the horizontal component of the arcuate movement caused by rotation
The connecting plate is moved in the direction by the drive gear.
To be driven horizontally relative to the bearing plate
Lift which is installed in a vehicle, characterized in that the. 3. An external opening at an opening provided on one side of the vehicle body.
A pair of left and right panels installed in parallel on the floor of the
Assembled with guide rail and guide rail so that it can move forward and backward
The movable bracket and each base end are attached to the movable bracket.
Left, which is connected to be able to rotate freely in the vertical direction and extends outside the cabin
The platform is horizontal with a pair of right connecting arms
The four-bar linkage supporting the bracket and the movable bracket
Activate the four-bar link mechanism while it is at the leading end.
A driving device for raising and lowering the platform
In a lift mounted on a vehicle, the platform is extended by the pair of connecting arms.
A pair of left and right connection plugs that are connected to the ends
The rate and the longitudinal direction of the connecting arm to the connecting plate
With a receiving plate mounted so that it can move horizontally along
And each one of the pair of connecting arms
At the middle part of the connecting arm and the left and right rear ends of the receiving plate
A pair of left and right auxiliary arms with both ends rotatably connected
A platform for moving the platform up and down.
Each connecting part of both connecting arms with the bracket is used as a fulcrum.
The horizontal component of the circular motion caused by the rotation
The pair of connecting plates in the direction
Horizontal relative to the receiving plate
Equipped with a vehicle characterized by moving to
Lift.