JPH086616Y2 - Lifting device at the entrance / exit of the vehicle body - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lifting device at an entrance / exit of a vehicle body,
Specifically, it relates to a lifting device installed at a step-type entrance / exit of a bus or the like, which relates to a lifting device that allows a passenger in a wheelchair to move up and down by passing over a step used by general passengers. Is.

[Conventional technology]

When a physically handicapped person who needs a wheelchair gets on the bus, he / she cannot go up and down the steps provided at the entrance / exit. For this reason, there is an elevating device that allows a person with a disability to be put on and off while sitting on a wheelchair.

For example, Japanese Unexamined Patent Publication No. 56-75259 discloses a lift for a physically handicapped person used in a railway vehicle, and Japanese Unexamined Patent Publication No. 53-49706 discloses the structure of a vehicle entrance / exit. These lift devices employ a parallelogram linkage mechanism so that the platform on which the wheelchair is placed can be lifted and lowered while being kept horizontal. However, depending on the attachment position of the link, the posture of the upper and lower links forming the parallelogram may be in a straight line during the ascending / descending of the link, so that the supporting state may not be stable.

As an example in which the links of the parallelogram link mechanism are not aligned in a straight line, there is a wheelchair lifting device described in Japanese Patent Laid-Open No. 55-1207. The platform is supported by links connected to the base and is adapted to raise and lower. As a result, a large force acts on the base portion, and the strength to withstand it is required, which causes a problem of increasing the size of the device.

In order to eliminate these problems, mounting frames for parallelogram links on the left and right sides of the platform stand upright, and if the parallelogram link mechanism is housed inside them, the platforms can be supported on both sides and moved up and down smoothly. be able to.

[Problems to be solved by the device]

By the way, the entrance and exit of buses and the like is generally provided on the side of the vehicle body. Such an entrance / exit has a step, but when moving the platform above the step, if the mounting frames are erected on both sides of the platform as described above, it is possible to move from the front driver's seat to the side of the vehicle body. When trying to determine the operating state of the platform,
The mounting frame and the parallelogram link mechanism attached to it block the view. That is, when the platform is raised to the floor of the bus or dropped to the ground, even if the driver looks into the rear-view mirror, the state of the wheelchair is hidden behind and cannot be seen.

The present invention has been made in view of the above problems, and an object thereof is to visually confirm the lifted state of the platform from the driver's seat when a person with a wheelchair is placed on the platform and lifted between the ground and the floor. An object of the present invention is to provide a lifting device at an entrance / exit of a vehicle body side part.

[Means for solving the problem]

INDUSTRIAL APPLICABILITY The present invention is applied to an elevating device capable of elevating and lowering a platform above a step of an entrance / exit provided on a side portion of a vehicle body.

2 and 3, the lower frame 5 is provided on the rear side 1b of the entrance / exit 3, and the two frames rotatably mounted on the lower frame 5 are characterized. A parallelogram link mechanism 13 formed by attaching links 7 and 9 to shafts 6 and 8, respectively, and an actuator 15 attached to the lower frame body 5 for operating the parallelogram link mechanism 13.
And a vertical mounting frame 12 to which the ends of the two links 7 and 9 are rotatably mounted, and a cantilevered support structure at the lower end of the mounting frame 12 to project to the front side of the vehicle body (see FIG. 1). (A)
And the platform 18 attached. And, when you move the platform 18 up and down, you can see the up and down state from the driver's seat,
That is, the mounting frame body 12 is arranged on the rear side 1b of the entrance / exit 3.

[Action]

When a passenger, such as a wheelchair, gets in and out of the step-type entrance / exit 3 provided on the vehicle body side 1a, the rear side 1b of the entrance / exit 3
The actuator 15 mounted on the lower frame 5 provided in the above is operated, and the platform 18 is moved up and down by the movement of the parallelogram link mechanism 13. The platform 18 has a cantilevered support structure and is attached to the mounting frame 12 constituting the parallelogram linkage 13 so as to project to the front side of the vehicle body.
Therefore, when observing the operating condition of the platform 18 from the driver's seat through the rearview mirror, the mounting frame 12 and the parallelogram link mechanism 13 do not block the view. Therefore, while the driver is in front of the passenger, he starts the preparatory movement for getting on and off the passenger using the wheelchair,
Furthermore, the retracting operation of the platform 18 can also be confirmed. In addition, general passengers who use Step 2 can also use the same entrance / exit 3, and the passengers can visually check the boarding / alighting status without being blocked by the mounting frame 12 or the like.

[Effect of device]

According to the present invention, a step-type entrance / exit for general passengers,
It is possible to get on and off passengers using a wheelchair. And the platform for putting a wheelchair etc.
Since it has a cantilevered support structure that extends to the front of the vehicle body at the bottom of the mounting frame that operates it, it obstructs the movement of a wheelchair mounted on the platform from the front driver's seat. Therefore, safety confirmation is extremely easy. Moreover, the platform elevating device is downsized, and the device for getting in and out of the platform becomes easy.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings of its embodiments.

1 (a) and 1 (b) are general schematic views of a bus to which the lifting device of the present invention is attached, and a vehicle body side portion 1a of the bus 1 is provided with an entrance / exit 3 provided with a step 2. On the rear side 1b of the entrance / exit 3, a lower frame 5 of the lifting device is arranged.

As shown in FIGS. 2 and 3, the base portion 5A of the lower frame body 5 is fixed to the lowest step 2a of the entrance / exit 3. Two supporting shafts 6 and 8 are vertically mounted on the lower frame body 5, and sleeves 5a and 5b are rotatably fitted on the respective outer shafts 6 and 8. One sleeve 5a has one end 7a of the first link 7
However, one end 9a of the second link 9 is attached to the other sleeve 5b, and when the lever body 14 having one end 14a fixed to the sleeve 5a is rotated, the first link 7 is attached to the support shaft 6 as described later. Around it, the second link 9 can rotate around the support shaft 8.

The first link 7 and the second link 9 have the same length and are parallel to each other via a mounting frame body 12 which is a vertical thin box body described later. That is, the other end of the first link 7
7b and the other end 9b of the second link 9 are arranged at the same intervals as the two support shafts 6 and 8 provided on the lower frame body 5 via the pin shafts 10 and 11, and the support shafts 6 and 8 are connected. It is pivotally supported in a position that is parallel to the virtual line that connects it. The mounting frame 12 also serves as a handrail for the handicapped person 4 on the wheelchair 16, and its upper edge 12b.
The front and rear edges 12c and 12d are finished smoothly, and both corners are rounded.

Lower frame 5, first link 7, second link 9, mounting frame described above
12 forms one parallelogram linkage 13.
An elevating table 18 as a platform on which the wheelchair 16 is placed is attached to the lower end 12a of the mounting frame 12 so as to project to the front side of the vehicle body with a cantilever support structure (see the solid line in FIG. 1 (a)).

On the other hand, the other end 14b of the lever body 14 is connected to a piston rod 15a of an actuator 15 such as a hydraulic cylinder, and the expansion and contraction of the piston rod 15a enables the lever body 14 to tilt. Reference numeral 15 is swingably attached to the lower frame 5 at substantially the center of the body. Therefore, when the hydraulic cylinder 15 is extended, the mounting frame body 12 is inserted through the first link 7 and the second link 9.
Is rotated in the descending direction and the platform 18 is grounded.
Can be lowered to 19. When the hydraulic cylinder 15 is contracted, the mounting frame body 12 is raised to the position indicated by the chain double-dashed line, and the platform 18 is brought to the same height as the floor 1c.

The platform 18 described above, as shown in FIG.
It consists of a hollow flat box base 18A and a tip base 18B, and a tilt stopper 17 at the tip. A hydraulic cylinder (not shown) is built in the base table 18A, and when it is extended, a rod body (not shown) built in the front table 18B advances and the rear end lower portion 17b of the tilt stopper 17 is moved. It is supposed to be pushed. The rear end upper part 17a of the tilt stopper 17 and the front end upper part of the front table 18B are connected via a pin shaft 17c, and the tilt stopper 17 is flipped up about the pin shaft 17c and placed on the platform 18. It is possible to prevent the 16 from falling back. Incidentally. Front stand 18B
Two springs (not shown) are provided inside, and when the hydraulic cylinder is contracted to retract the rod body, the tilt stopper 17 returns to a horizontal posture by its restoring force.

Inside the base 18A, as shown in FIG.
An actuator 20 for folding the front table 18B toward the base table 18A around a pin shaft 18a that rotatably connects the front table 18B and the base table 18A has the tilt stopper 17 described above. It is stored separately from the hydraulic cylinder that flips up (see Fig. 3). When the hydraulic cylinder 20 is in the contracted state, the base table 18A and the front table 18B are flush with each other as shown in FIG.
As shown by the chain double-dashed line in the figure, it can be folded in two.

That is, when the hydraulic cylinder 20 rotatably supported by the pin shaft 20a at the rear end is extended as shown in FIG.
The pin shaft 20c at the tip of the piston rod 20b shown in the figure is constrained and displaced by the guide link 21A that rotates around the pin shaft 21a fixed to the base 18A as shown by the alternate long and short dash line. The push-out link 21B is rotatably attached to the pin shaft 20c at the tip of the piston rod 20b and the pin shaft 21b of the bracket 18b attached to the lower portion of the rear end of the front base 18B. Since the pin shaft 20c is displaced only by the rotation around the center 18a, the push-out link 21B is displaced as indicated by the alternate long and short dash line. When the hydraulic cylinder 20 is further extended, the pin shaft 20c comes to the position indicated by the chain double-dashed line and the front table 18B
The platform 18 is rotated 180 degrees as shown.
Is designed to be folded and folded.

By the way, the platform 18 folded in the vicinity of the floor 1c hinders passengers using the step 2 from boarding, so as shown in FIG. 2, the front surface of the mounting frame 12 on the rear side 1b of the entrance / exit 3 is shown. Further, it can be rotated so as to have a vertical posture shown by a two-dot chain line.
That is, the hydraulic cylinder 22 is built in the mounting frame 12,
When the pin rod 22a is extended like the chain double-dashed line,
The arm member 22A fixed to the side surface of the base 18A also rotates. The platform 18 folded by this rotation is rotated 90 degrees upward about the pin shaft 18c, and the space above the step 2 is opened.

According to the elevating device having such a configuration, it is possible to smoothly operate the disabled person 4 and the general passenger of the wheelchair 16 and to visually confirm the operating state of the elevating device from the driver's seat by operating as follows. .

As shown in FIGS. 1 (a) and 1 (b), the driver passes through the rear-view mirrors 23 and 24 inside and outside, or the platform 18 folded by an alarm light is used. After confirming that it is retracted to the front of the mounting frame body 12, the door 25 (see FIG. 3) is opened. If there is a passenger using a wheelchair among the passengers waiting to board, the hydraulic cylinder 22 shown in FIG. 2 is contracted before or after the passenger gets on board. The arm member 22A attached to the tip of the piston rod 22a is connected to the pin shaft 18 provided at the base end of the base 18A.
It is rotated about c, and along with the rotation, the folded platform 18 is also rotated about the pin shaft 18c by 90 degrees so as to be in the horizontal posture shown by the solid line.

When the hydraulic cylinder 20 shown in FIG. 3 is contracted, the front base 18B is rotated from the state of the chain double-dashed line in FIG. 5 to the position of the solid line so as to be flush with the base base 18A. At this time, the tilt stopper 17 also rotates together with the front platform 18B and projects outward of the vehicle body side section 1a.

Further, when the hydraulic cylinder 15 is extended, the lever body 14 connected to the piston rod 15a is rotated, and at the same time, the first link 7 is also rotated via the sleeve 5a. Since the parallelogram linkage mechanism 13 is used, the second link 9 also rotates in the same manner, and the mounting frame body 12 is lowered together with the platform 18 onto the ground 19 in the solid line position.

If the caregiver pushes the wheelchair 16 or makes it self-propelled, its wheels advance from the tilt stop 17 to the front pedestal 18B, and when the wheelchair 16 is fully on the platform 18 as shown, brake the wheelchair 16. Call. After that, the tilt stopper 17 is flipped up by the hydraulic cylinder (not shown) as shown by the chain double-dashed line in FIG.

In this state, when the piston rod 15a of the actuator 15 is contracted, the parallelogram linkage mechanism 13 causes the platform 18 to pass above the step 2 and be raised to the same plane as the floor 1c. In the meantime, even if the wheelchair 16 moves backward, the tilt stopper 17 prevents the wheelchair 16 from falling off the platform 18. Passengers in wheelchair 16 can board if the brakes are released and another person in the vehicle pulls in wheelchair 16 or an outside person pushes it. When the wheelchair is self-propelled, it is possible to easily enter the vehicle without bothering the helper.

When a general passenger is put on, the tilting stopper 17 is returned to its flip-up position, the hydraulic cylinder 20 is extended, the platform 18 is folded in two, and then the hydraulic cylinder 22 is extended to lean it along the mounting frame 12. Step 2 is opened so that ordinary passengers can board. When the mounting frame 12 is raised, it is located inside the vehicle, so the door 25 (see FIG. 3) can be closed. Of course, it is possible to lower the wheelchair 16 with the physically handicapped person 4 still on it, by substantially the same operation as described above.

As can be seen from the above description, since the mounting frame 12 that supports the platform 18 is provided on the rear side 1b of the entrance / exit 3, the driver in front of the passenger can pass the passengers in the wheelchair through the rearview mirrors 23 and 24. It is possible to visually check the preparation for boarding, the entire operation of opening the step, and the operation of opening the step, and it is possible to confirm the safety of getting on and off all passengers. Then, the passengers in the wheelchair can easily get on and off at the step-type entrance / exit for general passengers. In addition,
The lifting device of the present invention can be used not only for wheelchairs but also for loading large luggage. Also, the platform lifting device itself is downsized, and it can be easily mounted even in a narrow entrance / exit with steps.

[Brief description of drawings]

1 (a) and 1 (b) are general schematic views of a bus to which the lifting device of the present invention is attached, FIG. 2 is an explanatory view of the folding operation of the platform, and FIG. 3 is a III-III line in FIG. FIG. 4 is a schematic side view of the platform, and FIG. 5 is a folding mechanism diagram of the platform, as seen from the direction of the arrow. 1a ... vehicle body side part, 1b ... rear part side, 2,2a ... step, 3 ... entrance / exit, 5 ... lower frame, 6,8 ... spindle, 7 ... link (first link), 9 ... link (second) Link), 12 ... Mounting frame, 13 ...
Parallelogram linkage mechanism, 15 ... Actuator (hydraulic cylinder), 18 ... Platform (elevation platform).

Claims (1)

[Scope of utility model registration request] 1. An elevating device capable of raising and lowering a platform above a step of an entrance / exit provided on a side portion of a vehicle body, wherein a lower frame is provided on a rear side of the entrance / exit, A parallelogram link mechanism formed by attaching links to two pivots rotatably mounted on the lower frame, and an actuator attached to the lower frame to operate the parallelogram link mechanism. And a vertical mounting frame body in which the ends of the two links are rotatably mounted, and a platform mounted on the lower end of the mounting frame body by projecting toward the vehicle body front side with a cantilever support structure, A vehicle characterized in that the mounting frame is arranged on the rear side of the entrance / exit so that the lifting state can be visually checked from the driver's seat when the platform is lifted / lowered. The lifting device in the doorway of the side.