JPH04331636A - Step device in vertical lifting gear for vehicle - Google Patents

Abstract

PURPOSE:To simplify a step device and a lifting platform in structure as well as to prevent any drop in strength by installing the step device separately from the platform and making this step device collapsibly stowable at a time when the platform is made to go up and down. CONSTITUTION:An intermediate part of an arm 42 is pivoted to a bracket 41 at the inner part of a lower wainscot 22 at a vestibule, while one end of this arm 42 is pivoted to a support member 38 as well, and a cylinder 43 is installed in space between the other end and the bracket 41. When this cylinder 43 is contracted, the arm 42 rotates counterclockwise, and the support member 38 is erected on a lifting platform 13, while a step member 39 comes to horizontality. With this constitution, the lifting platform 13 is usable as a part of the step. Next, when this platform 13 is lifted up and boarding or alighting is carried out by a wheelchair or the like, the cylinder is extended and if so, the arm 42 rotates clockwise, so that the support member 38 and the step member 39 are stored at the outside of an upper wainscot 40 in a state of being folded, thus the support member 38 comes to be flush with the lower wainscot 22 in storage. Therefore the lifting platform 13 is freely going up and down.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention is utilized in the field of a lifting device for safely boarding and disembarking a disabled person in a wheelchair in a vehicle such as a bus, particularly a vehicle with a high floor.

0002

[Prior Art] The conventional vertical lifting device is
As disclosed in Japanese Patent Application No. 220, the step-like steps for getting on and off the platform are turned into a flat lifting platform so that it can also be used as a device for getting on and off the wheelchair.

0003

[Problems to be Solved by the Invention] However, in the above structure, a plurality of flat plates are connected in a bending manner to form stair-like steps, resulting in a very complicated structure and complicated manufacturing. . In addition, when used as a flat platform, the strength of the platform decreases due to the flatness of multiple flat plates, and the large number of seams between the plates may cause wobbling when the wheelchair is moved on the platform. The problem is that it is easy.

Therefore, an object of the present invention is to provide a step device separately from the lifting table so that the step device can be stored when the lifting table is to be raised or lowered, thereby simplifying the structure of the step device and the lifting table, and also to simplify the structure of the lifting table. The present invention provides a step device for a vertical lifting device for a vehicle that prevents the strength of the step from decreasing.

[0005]

[Means for Solving the Problems] Fixed columns are erected on the left and right sides of the entrance/exit of the vehicle of the present invention, an elevating column is slidably provided on the fixed column, an elevating platform is horizontally attached to the lower end of the elevating column, and In a vertical lifting device for a vehicle that can raise and lower a lifting platform from the vehicle floor to the ground by raising and lowering a lifting column and can stop the lifting platform midway up and down, the base of the step member can be rotated toward the wall plate of the entrance/exit door. A support member is foldably supported at the tip of the step member, and the step member or the support member includes:
This device is characterized by a rotatable arm that moves both members between a step-like extended state on the elevator platform and a folded storage state toward the wall plate.

[0006]

[Operation] When lifting and lowering the platform to get on and off a wheelchair, etc., rotate the arm to fold and store the step member and support member toward the wall plate, and in this state, move the platform to the vehicle floor. Boarding and alighting is done by raising and lowering the vehicle from the surface to the ground. When using the lifting platform as part of a step, the lifting platform is stopped at a predetermined position, the arm is rotated, the step member and the supporting member are extended like a staircase above the lifting platform, and the lifting platform and the step are Walk on and off the device.

[0007]

[Embodiment] The following embodiment will be explained with reference to the drawings. Reference numeral 1 is a bus, and a door 3 is provided on the side of the bus 1 for closing each boarding/exiting entrance 2 at the front, inside, and rear. 3 is folded in half and stored open on one side of the entrance/exit 2, and the middle and rear doors 3 are opened and stored on the left and right sides of the entrance/exit 2.

[0008] 4... are seats provided on the floor surface 5. 6 is a driver's seat, and a fare box 7 is installed next to the driver's seat 6. A lifting device 8 of the present invention is provided at the entrance 2, and will be explained with reference to FIGS. 3 to 12. Reference numerals 9 and 9 denote a pair of fixed columns erected on the left and right sides of the vehicle body inside the entrance 2, and the fixed columns 9 and 9 have a sliding elevating column 10.
, 10 are installed inside, and the lifting columns 10, 10 are slid by lifting cylinders 11, 11 provided between both the columns 9, 10.

The base of a lifting table 13 is fixed to the lower ends of the lifting columns 10, 10 via flat brackets 12, 12, so that the lifting table 13 is held in a horizontal state. The elevating table 13 consists of a main elevating table 14 and an auxiliary elevating table 15 housed within the main elevating table 14, as shown in FIG. As shown, an X-shaped extending device 16 is provided, and one end of the extending device 16 is pivoted to a main bracket 17 fixed to the main lifting platform 14, and the other end is pivoted to an auxiliary bracket 18 fixed to the auxiliary lifting platform 15. The auxiliary lifting platform 15 can be moved from the retracted state shown in FIG. 3 to the extended state shown in FIG. 4 by expanding and contracting a cylinder 19 attached to a part of the extending device 16.

A flat plate-shaped spanning plate 20 is rotatably hinged to the base of the main lifting platform 14, and the spanning plate 20 is rotatably hinged to the base of the main lifting platform 14.
0 is urged in the direction of collapse by a spring 21. When the elevating platform 13 reaches the highest position, the spanning board 20 is moved as shown in FIG.
It is lowered by a spring 21 as shown in FIG.

[0011] Also, as the elevator platform 13 descends, the gangplank 2
The free end of 0 is regulated by the lower wall board 22 of the entrance and exit, and the span plate 20 is in an upright state.At the lowest position, the span board 20 is in the upright state as shown in FIG. It is designed to close the gap between Reference numerals 23 and 23 indicate mounting columns erected at the left and right bases of the main lifting platform 14;
, 23 have power units 24, 24 and cylinders 25 driven by the power units 24, 24 as shown in FIG.
. , the bases of side covers 28, 28 are fixed to the protruding ends of the rotating shafts 26, 26, and the cylinders 25, 2
5, the side covers 28, 28 are raised up and retracted, and when contracted, the side covers 28, 28 are brought down as shown in FIGS. 9 and 10 to prevent the wheelchair from sliding sideways on the lifting platform 13. .

Reference numeral 29 denotes a telescoping cylinder whose one end is fixed to the upper part of the fixed column 9 and the other end is fixed onto the main lifting platform 14.
A spiral-shaped cord 30 extending from the bus 1 side to the power unit 24 is housed inside, and the cord 30 is prevented from sagging in the telescopic tube 29. Reference numeral 31 denotes a hook device for fixing the lifting platform 13 while it is being raised or lowered (position when the vehicle is running).

The locking device 31 has a cylinder 32 provided at the bottom of the bus 1 as shown in FIGS. 7 and 8.
2 is connected to a lock pin 34 via a bell crank 33, the lock pin 34 is supported by a pin hole 35 of the fixed column 9, and the lock pin 34 enters the pin hole 36 of the lifting column 10 when the cylinder 32 is actuated. As a result, the lifting and lowering of the lifting column 10 is restricted, and accordingly, the lifting platform 13 is also fixed in the middle of lifting and lowering.

[0014] Furthermore, the door 3 is opened and closed on a lifting platform 13 that is fixed during the ascent and descent. 37 is lifting platform 1
3 is fixed in the middle of ascent and descent and is a step device formed on the elevating table 13 when ascending and descending as part of the step. As shown in FIG. 5, the step device 37 is provided with a support member 38 and a step member 39 that are foldable, and the base of the step member 39 is pivotally supported between an upper wall plate 40 and a lower wall plate 22.

A bracket 41 is installed inside the lower wall plate 22.
The middle of an arm 42 is pivotally supported on the bracket 41, one end of the arm 42 is pivotally supported on the support member 38, and a cylinder 43 is provided between the other end and the bracket 41. When the cylinder 43 is contracted, the arm 42 rotates counterclockwise, and the support member 38 moves up and down the elevator platform 13 as shown by the solid line in FIG.
As the step member 39 is erected upward, the step member 39 becomes horizontal.

At this time, a cutout groove 44 is formed in the lower wall plate 22 to allow the arm 42 to rotate. When the cylinder 43 is extended, the arm 42 rotates clockwise, and the support member 38 and step member 39 are folded and stored outside the upper wall plate 40 as shown by the dashed line in FIG. In this state, the support member 38 is on the same plane as the lower wall plate 22.

Reference numeral 45 denotes a stopper provided on the auxiliary lifting platform 14. Although the embodiment has been described using a bus, it is not limited to buses, and can be implemented on any vehicle on which a wheelchair or the like can get on and off. Further, if the floor height above the ground is low, the step device may be omitted. Further, the locking device is not limited to the structure of the embodiment, but any structure that restricts the descent of the lifting column will be satisfactory.

The present invention has the above-mentioned configuration. Next, the operation will be explained. First, when getting on and off by walking on the steps, the auxiliary elevator platform 15 is stored in the main elevator platform 14 as shown in FIG. 3, and the elevator platform 13 is moved up and down. It is stopped midway, the cylinder 32 of the lock device 31 is contracted, the lock pin 34 is inserted into the pin hole 36 of the lifting column 10, and the lifting column 10 and the platform 13 are fixed.

Furthermore, the step device 37 is formed into a stepped shape by reducing the cylinder 43, and the side cover 28 is erected and retracted by extending the cylinder 25 of the mounting support 23. In this state, the door 3 is opened and the passenger gets on and off using the elevator platform 13 and step device 37. Next, to explain the case of getting on and off in a wheelchair, open the door 3 from the state shown in Figure 3,
The step device 37 is stored outside the upper wall plate 40 by extending the cylinder 43, and the extending device 16 is operated by the cylinder 19 to extend the auxiliary lifting platform 15 as shown by the two-dot chain line in FIG.

Furthermore, the cylinder 25 of the mounting column 23 is contracted to lower the side cover 28 to the state shown in FIG. 10
Make it possible to raise and lower. In the above state, the lifting cylinder is extended to lower the lifting platform 13 from the position shown in FIG. 3 to the position indicated by the dashed line in FIG. 4 (lowest position).

After the elevator platform 13 has descended to its lowest position, the wheelchair gets on the elevator platform 13, and after getting on the platform, the stopper 45 is raised. In this state, the lifting cylinder 11 is contracted to raise the lifting table 13. At this time, since the span plate 20 closes off the space between the lifting platform 13 and the lower wall plate 22, it is possible to prevent the legs of the disabled person in the wheelchair from getting caught.

Furthermore, the spanning board 20 is regulated by the lower wall plate 22 and the support member 38 of the step device 37, and rises in an upright state. When the lifting platform 13 rises to the highest level as shown by the solid line in FIG.
1, it is laid down and becomes horizontal. In this state, the wheelchair moves from the lifting platform 13 to the floor 5 through the span plate 20. Repeat the above procedure to get on and off the vehicle.

[0023]

[Effects of the Invention] As described above, the present invention rotatably supports a step member on the wall plate side of the entrance/exit, a support member is provided on the step member so as to be foldable, and the arm is rotated. It is designed to be able to move between a stair-like extended state and a folded and stored state toward the wall board side.This allows the lifting platform and step device to have a simple structure to form a step. The strength of the lifting platform can be maintained.

[0024] Furthermore, since the lifting platform can have fewer joints than before, it is possible to eliminate rattling when moving in a wheelchair.

[Brief explanation of drawings]

FIG. 1 is an overall view of a bus.

FIG. 2 is a plan view of the inside of the bus.

FIG. 3 is an overall view of the lifting device.

FIG. 4 is an operational state diagram when getting on and off the wheelchair.

FIG. 5 is a partially enlarged view of a position in the middle of ascending and descending of the elevating platform.

FIG. 6 is a diagram taken along line AA in FIG. 5;

FIG. 7 is a partially cross-sectional view taken along line BB in FIG. 5;

FIG. 8 is an enlarged cross-sectional view taken along line CC in FIG. 7;

FIG. 9 is a partially enlarged view of the elevator platform when it is at its lowest point.

FIG. 10 is a partially cross-sectional view taken along line DD in FIG. 9;

FIG. 11 is a partially enlarged view of FIG. 9;

FIG. 12 is a plan view showing the operating state of the elevator platform.

[Explanation of symbols]

5 Floor surface 8 Lifting device 9 Fixed support 10 Lifting support 13 Lifting platform 20　　　　Gateboard 23 Mounting post 28 Side cover 31 Lock device 34 Lock pin 37 Step device

Claims (1)

[Claims] Claim 1: Fixed columns are erected on the left and right sides of a vehicle entrance, an elevating column is slidably provided on the fixed column, an elevating platform is horizontally attached to the lower end of the elevating column, and the elevating column is raised and lowered. In the vertical lifting device for a vehicle, which is capable of raising and lowering a lifting platform from the vehicle floor to the ground and stopping it midway up and down, the base of the step member is rotatably supported on the wall plate side of the entrance; A support member is pivotally supported in a foldable manner at the tip of the step member, and the step member or the support member has both members in a step-like extended state on the lifting table and in a folded and stored state on the wall plate side. A step device in a vertical lifting device for a vehicle, which is provided with a rotatable arm for moving the vehicle.