JPH0641881Y2 - Vehicle platform - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle platform that is installed in, for example, a van type vehicle and is used for getting on and off a disabled person sitting in a wheelchair, loading and unloading luggage, and the like.

(Prior Art) Conventionally, as a vehicle platform of this type, for example, there are those shown in FIGS. 21 and 23. The vehicle platform 1 shown in FIG. 21 is mounted on both sides of a rear opening of the vehicle. The elevating plate 4 that is moved up and down between the grounding position and the ascending position by the parallelogram linkage mechanisms 2 and 3 provided is, for example, foldable, and the elevating plate 4 is stored in an upright state in a folded state. 22 It is latched and fixed by the latch 5 as shown in the figure. In addition, the vehicle platform shown in FIG.
1A is a parallelogram link mechanism mounted on both sides of the rear opening of the vehicle in the same manner, and is lifted and lowered by a parallelogram link mechanism 2A, 3A between a grounding position and an ascending position.A lift plate 4A is foldable and foldable. In this state, the storage cylinder 6 is actuated to jump up to one side of the vehicle compartment for storage.

(Problem to be Solved) However, in the case of the vehicle platform 1, since the elevating plate 4 is stored in an upright state, the lower side of the opening is closed, and the platform 1 is not used, for example. When loading or unloading luggage, or when an occupant tries to get in or out of the opening, there is the trouble of having to remove the latch 5 and deploy the lifting plate 4 each time. In the case of this vehicle platform 1A, since the lifting plate 4A is folded and stored while being folded up, the lifting plate 4A has a parallelogram linkage mechanism.
There was a problem that the storage space for luggage was reduced by overhanging from the standing position of 2A toward the passenger compartment.

The present invention has been made to solve the above-mentioned conventional problems, and in particular, a platform is pivotally attached to an upright strut and a lock strut via a support shaft so as to be rotatable between an upright position and a horizontal position. In addition to the original convenience of loading and unloading by mounting the platform in an upright state so that it can be swiveled horizontally in the horizontal direction around one of the upright columns, a platform for vehicles that can enter and exit from the vehicle opening It is intended to be provided.

(Means for Solving the Problems) In order to solve the above technical problems, the present invention provides a parallelogram link mechanism at an opening of a vehicle, and an upper end portion of a platform feeding frame is provided on an upper end side of the parallelogram link mechanism. In the lifter device in which the swing frame is configured to be movable between the floor and the ground plane by the action of the drive cylinder, the platform is set upright at the lower end of the swing frame of the lifter device. A vehicle in which the swing frame is rotatably pivoted, and the swing-out frame is provided with an upright pillar, and a platform in an upright state is attached to the upright pillar so as to be horizontally rotatable around the upright pillar. Exists for the platform.

(Operation) With the above configuration, the platform can be moved up and down horizontally between the grounding position and the ascending position, and can be stored in the upright position. From this upright position, the platform can be horizontally swung around the upright column. It can be freely provided to open between the feeding frames.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, 11 is a lifter device provided in a rear opening W of a van type vehicle 10, for example. In other words, the swing arms 21, 21 are pivotally attached to each other to form a pair of left and right parallelogram linkage mechanisms 12, 13, the platform 26 supported by the front portions of the left and right swing arms 21, 21 and the one swing arm 21. Above the platform suspended from the front of
The platform 26 is held upright by providing an upright column 36 that supports the 26 in a vertically folded state so that it can swing in the horizontal direction, and a lock column 55 that is detachably attached to the front part of the other swing-out arm 21. It comprises a horizontal swing lock mechanism 54 for storing and an upright / horizontal rotation lock mechanism 86 for locking the platform 26 between the upright support column 36 and the lock support column 55 in an upright state so as to be detachable.

Since the pair of parallelogram linkages 12 and 13 are formed symmetrically, the left side parallel link 12 shown in the figure will be described. Reference numeral 14 is a base mounting member of the parallelogram linkage 12 and an opening of the vehicle 11. The bracket 16 is mounted on the floor 11a of the section W, and an inner bracket 16 having a substantially U-shaped cross section and having a predetermined height is erected on the upper surface side of the mounting web 15, and the bracket 16 is provided at a predetermined position outside the bracket. A substantially plate-shaped outer bracket 17 of a lower height is erected, and both brackets 16, 1
Links 18a and 18b are pivotally attached to the upper end of 7.

The links 18a and 18b have a substantially U-shaped cross section and are formed to have the same length. The link 18a is inserted into the groove of the inner bracket 16 with its lower end facing outward and the shaft pin 19a.
Further, the escape groove 20 of the outer bracket 17 is formed on the bottom side of the groove portion of the lower end portion of the link 18b, the link 18b with the groove portion facing inward, the lower end portion with respect to the outer bracket 17, The inner link 18a and the outer link 18b are pivotally mounted via a shaft pin 19b, and a swinging arm 21 is pivotally mounted between the upper ends of the inner link 18a and the outer link 18b via shaft pins 19c and 19d.

This swing arm (also referred to as a swing frame) 21 is parallel to the line connecting the centers of the shaft pins 19a and 19b that pivotally attaches the lower ends of the links 18a and 18b between the upper ends of the links 18a and 18b.
A tilted arm 22 having a predetermined length attached by 9d and a support arm 23 having a predetermined length are provided vertically at the end of the tilted arm 22. Thus, the drive cylinder 24 is provided between the links 18a and 18b to which the swinging arm 21 is pivotally attached. The cylinder base side of the driving cylinder 24 is pivotally attached to the shaft pin 19b, and the tip of the piston rod 25 is pivotally attached to the shaft pin 19c. Support arm 2 of feed arm 21 of parallelogram linkage 12 and 13 thus formed
The platform 26 is mounted between the front portions of 3 through the upright columns 36 and the lock columns 55.

In this platform 26, a main plate 27, an auxiliary plate 28, and a tread plate 29 are provided so as to be foldable, and the main plate 27 is framed in a substantially rectangular shape of the frame member 30, and a plate provided with anti-slip means is attached to it. Cylindrical bearing members 31 are fixed to both ends of the frame member 30a serving as an attachment base by welding means, and a hinge plate 32 having pin holes 32a is provided at both ends of the frame member 30b serving as a front portion. It is installed diagonally.
Further, the auxiliary plate 28 is similarly framed by a frame member 33 to which a plate provided with anti-slip means is attached, and pin holes of the hinge plate 32 attached to the main plate 27 are attached to the left and right of the rear side. A hinge pin 34 that is fitted and connected to 32a is fixed by welding means or the like, and hinge pins 35 that connect the tread plate 29 are attached to the left and right of the front portion of the auxiliary plate 28. The main plate 27, the auxiliary plate 28, and the tread plate 29 thus formed are connected so that they can be folded and unfolded in the direction of the arrow shown in FIG.

Next, the upright post 36 to mount the platform 26 above.
And the lock stanchion 55, this upright stanchion
36 is rotatably supported on the front part of the support arm 23 of the swing-out arm 21, is formed in a cylindrical shape having a predetermined diameter, and has a predetermined width (high The flange portion 37 is formed by the above, and the flange portion 37 is fitted into the left and right bearing members 31 attached to the main plate 27 of the platform 26 so as to rotatably support the platform 26. A support shaft 38 of is attached to the pillar 36 at a right angle. A torso bar 39 is installed in the upright column 36 thus provided. The torsion bar 39 is made of a spring steel material having a predetermined diameter, the upper end side thereof is bent in a substantially ring shape as shown in the drawing to form a fixing portion 40, and the lower end side thereof is fixed portion 40. A movable portion 41 is formed by bending it in the same direction as a substantially U shape. In order to attach the movable portion 41 side of the torsion bar 39 thus formed, the lower side of the upright support column 36 is fixed at a predetermined position in a diametrical direction orthogonal to the axis c1 of the support shaft 38 attached to the support column 36. 42 is mounted through. The upright columns 36 thus provided are the lower bracket 43 and the upper bracket.
It is rotatably supported via 47.

This lower bracket 43 is a support arm 23 of the swing-out arm 21.
It is attached to the lower end portion of the support plate, and mounting pieces 45a and 45b are provided on both sides of a horizontally provided support plate 44 and fixed to the support arm 23 by welding means or the like.
A supporting hole 46 for rotatably fittingly supporting the lower shaft portion 36a having the collar portion 37 of 36 is pierced. Further, the upper bracket 47 is attached to the upper end of the swinging arm 23, and is a ring-shaped support body that rotatably supports the upper end of the upright support column 36.
A band-shaped mounting member 49 is fixed to the outer periphery of 48 by welding means or the like, a lid member 50 is fixed to the upper surface side thereof by welding means or the like, and a pillar 36 is attached to the lower surface of the lid member 50. A fixing member that is inserted into the inside to fix the fixing portion 40 of the torsion bar 39.
51 is hung. The fixing member 51 is formed by, for example, flattening a pipe material or the like, and the fixing member 51 has the upper arm 47 attached to the supporting arm 23 and the supporting arm 23.
Is fixed to the lower surface of the lid member 50 by a welding means or the like at a predetermined angle α with respect to the orthogonal line c3 of the support 48 with respect to the center c2 of the support member 48, and a pin hole 52 is formed at a predetermined position below the fixing member 51. The fixed portion of the torsion bar 39 is fixed by the pin 53. When the torsion bar 39 installed in this way is in a natural state where no torque is applied, the lower moving part 41 and the fixing pin 42 are located at the position shown by the chain double-dashed line in FIG.
The fixing pin 42 is at a position substantially aligned with the fixing member 51,
The support shaft 38 is located at a position a which is rotated by a predetermined angle β from the storage position b of the platform 26. The platform 26 is attached to the support shaft 38 of the upright support column 36 thus provided, and the platform 26 is attached to the end of the support shaft 38.
Lock struts 55 of 26 horizontal rotation lock mechanisms 54 are attached.

The horizontal swing lock mechanism 54 includes a lock column 55 located in front of the support arm 23 of the swing-out arm 21 on the link mechanism 13 side.
And upper and lower lock mechanisms 60A and 60B that are installed above and below the support arm 23 to lock and unlock the lock column 55. The lock strut 55 has a length substantially corresponding to that of the support arm 23, and its cross-sectional shape is formed into a substantially U-shape that opens to the support arm 23 side. A shaft 56 fitted to the inner diameter of the support shaft 38 of the upright support column 36 is fixed by welding means or the like, and is inserted into the support column 55 concentrically with the shaft 56 and extends to the other side surface to extend to the lower part of the support arm 23. Attached substantially U-shaped support bracket
A support shaft 57 fitted and supported in 58 is fixed by welding means or the like. Further, lock pins 59a and 59b are fixed to the upper and lower predetermined positions of the lock column 55 by welding means or the like. The lock pin 59 of the lock column 55 provided in this way
Locking mechanisms 60A and 60B are installed corresponding to the support arms of the swing-out arm 21 corresponding to a and 59b.

The upper and lower lock mechanisms 60A and 60B are formed in the same mechanism. Reference numeral 61 denotes a lock base, which is formed in a substantially deformed quadrilateral plate shape, and has mounting holes 61b, 61c on both sides on the base 61a side.
And a lock recess 62 that opens in a substantially horizontal direction is formed on the tip end side opposite to the base 61a. Reference numeral 64 denotes a lock body rotatably attached to a shaft pin 63 provided near the lock recess 62.
The lock groove 65 is provided in the
And an operating convex portion 67 are formed, an engaging surface 68 that engages with the engaging lever 72 continuously with the operating convex portion 67, and an arcuate sliding contact surface 69 are formed, and the lock concave portion 62 and the shaft pin are formed. A lever piece 70 is formed so as to project on the line connecting 63. Reference numeral 72 denotes an engaging lever, one end of which is pivotally attached to the lock body 64 via the shaft 71 at a position separated by a predetermined distance by the shaft pin 63. An engaging claw 73 that engages with the engaging surface 68 of the lock body 64 is formed in the portion. Further, the shaft 71 is provided with a spring lever 74 which is integrally rotated with the engagement lever 72 at a predetermined angle, and a predetermined distance is provided between the spring lever 74 and the lever piece 70 of the lock body 64. A tension coil spring 75 having a spring pressure is elastically attached, so that the lock body 64 is urged counterclockwise about the shaft pin 63 and the engagement lever 74 is urged clockwise about the shaft 73. An operating lever 76 is attached to the shaft 71. The upper and lower lock mechanisms 60A and 60B thus provided are provided with a hole 76a penetrating one end of the operating lever 76 thereof, a lock release lever 78 provided in front of the tilt arm 22 of the swing-out arm 21, and a rod 84. , 85 are linked to each other.

A lever shaft attached to the end of this lock release lever 78
79 is inserted into a bearing member 80 fitted to the inclined arm 22 so as to fit therethrough, and an operating lever 81 is attached to the lower end portion of the lever shaft 79 at a substantially right angle to the release lever 78. The distal end side of the operating lever 81 is bent and formed, for example, in a substantially rectangular shape shown in the drawing, and the upper piece 82 and the lower piece 83 thereof have engaging holes 82.
a and 82b are respectively penetrated, a lower connecting rod 84 that cooperates with the operating lever 76 of the lower lock mechanism 60B is hooked on the engaging hole 82a, and an upper connecting rod 85 is hooked on the engaging hole 83a. ing. In the horizontal swing lock mechanism 54 thus configured, the upper and lower lock pins 59a and 59b of the lock column 55 are locked to the upper and lower lock mechanisms 60A and 60B, respectively, when the platform 26 is in use. To unlock from this locked state, set the lock release lever 78 to the lever shaft 79.
Rotate counterclockwise around the upper and lower connecting rods
84 and 85 are moved upward in the direction of the arrow shown. As a result, the actuating lever 76 is rotated counterclockwise about the shaft 71 and is coaxial.
The engaging lever 72 attached to the 71 is also rotated integrally with the spring lever 74 in the counterclockwise direction in the drawing against the tension coil spring 75, and the locking claw 73 of the engaging lever 72 is locked by the lock body 64. When the lock body 64 is disengaged from the engagement surface 68, the lock body 64 is rotated clockwise around the shaft pin 63 by the restoring force of the tension coil spring 75, and the arcuate sliding contact surface 69 locks the engagement lever 72. The lock body 64 is slidably brought into contact with the concave surface 73a of the claw 73.
The lock pins 59a and 59b located in the lock recess 62 of the lock base 61 by the rotation of the sliding contact with the arcuate surface 67a of the operating projection 67 are pushed out from the lock recess 62 toward the opening side, and the lock strut 55
Is unlocked. In this state, the operating protrusion of the lock body 64
67 is located in the lock recess 62, and the sliding contact surface 69 of the lock body 64.
And the concave surface 73a of the locking claw 73 of the engaging lever 72 are brought into contact with each other, so that the engaging lever 72 is held upward. When locking the lock column 55, push the column 55 toward the swing arm 21 to lock the lock pins 59a and 59b above and below the lock base 61.
Is abutted against the arcuate surface 67a of the operating convex portion 67 of the lock body 64 located in the lock concave portion 62, and when further pushed, the lock body 64 is rotated clockwise around the shaft pin 63 via the arcuate surface 67a. In addition, a lock body 64 is attached to the lock pins 59a and 59b.
The lock groove 65 of the is engaged in a scooping shape, and the sliding contact surface 69
When the engaging lever 72 separates from the sliding contact of the concave surface 73a of the engaging lever 72, the restoring force of the tension coil spring 75 causes the engaging lever 72 to rotate clockwise about the shaft 71 so that the locking claw 73 becomes the engaging surface 68. When engaged, the lock column 55 is locked.

Next, the upright / horizontal rotation lock mechanism of the platform 26
The lock mechanism 86 is attached to the rear side of the main plate 27 of the platform 26 near the front frame member 30b. The lock mechanism 86 is used for locking and storing the
The lock claw 99, the upright column 36, and the lock column that are attached to the tip side of the left and right rods 100 that are linked to the operation section 87.
It consists of a striker 101 attached to the 55.

A pair of bell cranks 91, 92 are pivotally mounted via a shaft 90 at a substantially central portion of a mounting piece 89 of a mounting body 88 of the handle operating portion 87, and a torsion coil spring 93 is mounted on the coaxial 90. One of the arm pieces 93a is in a hole 91c penetrating the upper arm 91a of the bell crank 91, and the other arm piece 93a.
b is hooked in a hole 92c penetrating the upper arm 92a of the bell crank 92, and both bell cranks 91, 92 are biased in the direction of the arrow in the figure. Also, 94 is a handle,
It is pivotally attached to the mounting body 88 via 95, and pressing levers 96 are formed at both ends of the handle 94, and the left and right levers 96 are extended from the left and right windows 88a and 88b opened in the mounting body 88. The tip ends of the pair of bell cranks 91, 92 are placed in contact with the upper portions of the upper arms 91a, 92a of the bell cranks 91, 92 in a mounted manner. Also, 9
Reference numeral 7 is a guide member that is attached to the left and right frame members 30c of the main plate 27 and guides the lock claw 99 so that the lock claw 99 can be retracted laterally. nail
99 is slidably accommodated, and an inner end of the lock claw 99 is connected to a rod 100 attached to lower arms 91b and 92b of a pair of bell cranks 91 and 92 of the handle operating portion 87. Further, 101 is a striker attached to the upright column 36 and the lock column 55 side, and is provided at a position corresponding to the guide member 97 of the platform 26 when the platform 26 is upright, and engages the lock claw 99 through the engagement. The stop hole 102 is provided through. The upright / horizontal rotation lock mechanism 86 provided in this way folds the platform 26 into an upright state and stores it between the upright support column 36 and the lock support column 55 to set the lock claw 99 to the striker 10.
Stored and held by engaging 1 and platform 26
When using, the bell cranks 91, 92 are rotated by turning the handle 94 in the direction of the arrow shown by the broken line in the drawing so that the left and right presser levers 96
The lock claw 99 is disengaged from the striker 101 through the rod 100 connected to the shaft 90 by being pressed by the shaft 90 around the shaft 90, and the platform 26 is horizontally moved around the support shaft 38. Can be turned to.
Further, when the space between the swing-out arms 21 is released in a state where the platform 26 is stored in the upright state, the lock release lever 78 of the horizontal swing rocking mechanism 54 is operated to operate the upper and lower lock mechanisms 60A and 60B and the lock strut 55. The lock with the lock pins 59a, 59b is released, and by this release, the restoring force of the torsion bar 39 installed in the upright support column 36 causes the platform.
The 26 and the lock column 55 are pivoted to the rear side around the upright column 36, and the space between the swing-out arms 21 is opened.

In the figure, 103 is the swing arm 21 and the platform 26.
It is a stay that connects and.

(Effects of the Invention) Since the present invention is configured as described above, when the platform is used to unload a wheelchair or luggage, the handle operating portion of the upright / horizontal rotation lock mechanism is used. By operating, the striker provided on the upright column and the lock column can be disengaged from the lock claw to deploy the platform, and the parallelogram link mechanism can be operated to perform the loading and unloading work. In addition, when loading or unloading luggage while the platform is stored, by operating the lock release lever of the horizontal swing lock mechanism provided on the swing arm, the upper and lower lock mechanism installed inside the swing arm is operated. And the lock pin of the lock column are unlocked, and this lock release causes the restoring force of the torsion bar inside the upright column to The topograph and the lock strut are pivoted to the rear side around the upright strut, and the swinging arms are opened to allow loading and unloading of luggage and people.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view of a lifter device platform which is moved up and down, and FIG. 2 is a side view of a parallelogram linkage mechanism which shows the platform up and down motion. , Fig. 3 is a plan view of the main plate of the platform, Fig. 4 is a side view of the same, Fig. 5 is a plan view of an auxiliary plate of the platform, and Fig. 6 is a side view of the same.
FIG. 7 shows an upright strut on a swinging arm, FIG. 8 is a front view of a torsion bar, FIG. 9 is a sectional view taken along line II-II of FIG.
Fig. 11 is a sectional view taken along the line III-III in Fig. 7, Fig. 11 is a front view showing the relationship between the upright support column and the platform, and Fig. 12 is a front view showing the relationship between the upright support column and the platform.
The figure shows a partially broken side view of the horizontal swing lock mechanism.
14 is a front view of the lock mechanism, FIG. 15 is a perspective view of the operating lever, FIG. 16 is a front view of the handle operating portion of the upright / horizontal rotation lock mechanism, FIG. 17 is the same vertical sectional view, and FIG. Is upright
FIG. 19 is a perspective view showing a state in which the platform is stored, and FIG. 20 is a perspective view showing a state in which the platform is horizontally swung and opened from a state in which the platform is folded and stored. 21 to 23 are conventional examples. 10… Van-type vehicle 11… Lifter device 12,13… Parallel-shaped link mechanism 21… Swing arm (swing frame) 24… Cylinder for drive 26… Platform 36… Upright column

Claims (1)

[Scope of utility model registration request] 1. A parallelogram link mechanism is provided at an opening of a vehicle, an upper end of a platform swing frame is pivotally attached to an upper end side of the parallelogram link mechanism, and the swing frame is acted on a floor by the action of a drive cylinder. In a lifter device configured to be movable between a grounding surface and a ground surface, a platform is rotatably attached to a lower end portion of a swinging frame of the lifter device between an upright position and a horizontal position, and A platform for a vehicle in which an upright column is provided on a swing-out frame, and a platform in an upright state is attached to the upright column so as to be horizontally rotatable around the upright column.