JP4247677B2 - Elevating device for vehicle - Google Patents

Description

  The present invention is such that a mounting portion configured to be able to mount a mounting body is supported by a lifting frame that can be lifted and lowered with respect to a vehicle, and has the same lowered position on or near the ground as the vehicle floor. It is configured to be moved up and down to a height or a raised position located at substantially the same height, on both lateral sides of the mounting unit in a state along the inside and outside of the vehicle, and from the mounting surface in the mounting unit In the state where it is provided in a state where it protrudes upward and is guided by a guide rail that is slidably supported by the elevating frame in the vehicle inside / outside direction, the mounting portion described above is directed in the vehicle inside / outside direction with respect to the elevating frame. The present invention relates to a vehicle elevating device that is configured to be slidably moved and in which a rail cover that covers an upper surface and a side surface of the guide rail is mounted.

In such a vehicle elevating device, conventionally, there has been one in which a rail cover that covers an upper surface and a side surface of the guide rail is attached to the guide rail in order to improve the appearance of the vehicle elevating device (see, for example, Patent Document 1). .)
And this conventional vehicle raising / lowering apparatus mounts a covering body so that the mounting surface of a mounting part may be formed in order to prevent the appearance of the vehicle lifting apparatus and the mounted mounted body from slipping. There is.

JP 2003-341410 A

  In the above conventional vehicle lifting device, the covering is made into a thin film with a soft material such as rubber in order to increase the quietness when the mounted body such as a wheelchair is moved on the mounting surface of the mounting portion. In the case of the configuration, the covering body is easy to bend from the edge portion, and when the covering body is turned, the appearance of the vehicle lifting / lowering device is deteriorated, and the edge portion of the covering body is difficult to bend. If a new member covering the upper side is provided, the cost becomes high.

  This invention is made in view of the said actual condition, The objective is to provide the raising / lowering device for vehicles which can make a covering body difficult to roll at low cost.

In the vehicle lifting apparatus according to the present invention, a mounting portion configured to be able to mount a mounting body is supported by a lifting frame that can be lifted and lowered with respect to the vehicle, and a lowered position on or near the ground and the vehicle It is configured to be moved up and down to a raised position located at the same height or substantially the same height as the floor surface of the vehicle, and is placed on both lateral sides of the mounting unit in a state along the inside and outside of the vehicle and the mounting unit described above In the state where it is provided in a state of projecting upward from the mounting surface in FIG. 1 and is guided by a guide rail that is slidably supported by the lifting frame in the vehicle inside / outside direction, The vehicle lifting and lowering device is configured to be slidably operated in and out of the vehicle, and a rail cover that covers an upper surface and a side surface of the guide rail is attached to the guide rail,
In the first characteristic configuration, the rail cover covers, from above, a lateral end edge portion of a covering body that is mounted on an end edge portion of the placement portion side so as to form the placement surface of the placement portion. It is characterized by comprising a cover.

  That is, it becomes difficult for the covering to be rolled by covering the edge of the covering with the rail cover, and a member that newly covers the covering by using the rail cover as a member for covering the end of the covering. It is not necessary to separately provide the cover, and it is possible to make it difficult to wind the covering at a low cost. Therefore, it has come to be possible to provide an inexpensive vehicle elevating device in which the covering mounted so as to form the placement surface of the placement portion is hard to roll.

  The second characteristic configuration is characterized in that the rail cover is configured to hold the covering body at the covering portion.

  That is, the covering body can be made more difficult to bend, and the covering body can be made difficult to shift by being stopped by the cover portion.

  In the third characteristic configuration, the end portion on the mounting portion side of the rail cover has a thick portion and a cantilever-shaped protrusion portion directed inward from an upper portion in the thick portion as viewed from inside and outside the vehicle. The projecting portion constitutes the covering portion, and the thick portion is fixed to the mounting portion.

  That is, since the protruding part as the cover part is projected in a cantilevered manner from the upper part of the thick part to be fixed to the mounting part, the thick part near the protruding part is fixed. By doing so, it is possible to firmly prevent the covering from curling.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a vehicle lifting apparatus according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, this vehicle lifting device is used by being mounted at the rear in a vehicle V such as a wagon car provided with an opening / closing door D that opens and closes in the vertical direction. Is.
The vehicle lifting device includes a lifting platform (corresponding to a mounting portion) 1 configured to be capable of mounting a wheelchair C (corresponding to a mounted body), a lifting frame 2 that supports the lifting platform 1, and a lifting frame. 2 is operated by operating a pair of left and right lifting arms 3 that support 2 at the lower end, a pair of left and right parallel four-link mechanisms 4 that connect the pair of left and right lifting arms 3 to the vehicle V side, and a pair of left and right parallel four-link mechanisms 4. And a pair of left and right hydraulic cylinders 5 for raising and lowering the lifting platform 1, a hydraulic pump 6 for supplying hydraulic oil to the hydraulic cylinders 5, and the like. It is configured to be able to be fixed to the rear part.

Next, details of each device and member will be described. In this specification, for the sake of convenience, the forward direction of the vehicle V is referred to as the front, the reverse direction is referred to as the rear, and the left and right directions are specified in a state where the front is viewed from the rear. To explain.
In addition, although the left and right members have the same configuration, the left and right members have substantially the same configuration. Therefore, only one of the left and right sides will be described, and members having different configurations on the left and right will be described each time.

As shown in FIG. 8, the base frame 7 includes a pair of left and right base plates 41 provided on the floor F of the vehicle V, a connection frame 42 that connects the pair of left and right base plates 41, and a pair of left and right base plates 41. The base plate 41, the connection frame 42, and the base frame side bracket 8 are integrally formed by welding. The left base plate 41 is provided with a pump bracket 44 that supports the hydraulic pump 6 and an encoder bracket 43 that supports the rotary encoder 15.
8 and 9, the base plate 41 is formed with a lower step portion 41a and a higher upper step portion 41b that are lower than the portion connected by the connecting frame 42, and the lower step portion 41a and the upper step portion 41b are formed. By forming, the shape of the base plate 41 is formed along the floor surface F, and the strength of the base plate 41 is also increased.

As shown in FIG. 3, one end of the upper link 9 and the lower link 10 constituting the parallel quadruple link mechanism 4 is pivotally connected to the base frame side bracket 8 via pins 11a and 12a. 9 and the other end of the lower link 10 are pivotally connected to the arm side bracket 13 provided at the upper end of the elevating arm 3 via pins 11b and 12b, respectively.
As shown in FIG. 4, a lifting frame 2 for the lifting platform 1 is attached to the lower ends of the pair of left and right lifting arms 3, and the lifting platform 1 is held by the lifting frame 2 so as to be slidable in the front-rear direction. ing.
FIG. 3 shows the left parallel four-link mechanism 4 with the link cover 14 removed. In the left parallel four-link mechanism 4, the lower link 10 is pivotally supported by the base frame side bracket 8. The connecting pin 12 a is fixed to the lower link 10 side and is configured to rotate integrally with the lower link 10.

The hydraulic cylinder 5 is configured as a reciprocating cylinder, and as shown in FIG. 3, the cylinder side rotates relative to a pin 12 a that pivotally supports the lower link 10 with respect to the base frame side bracket 8. The rod side is pivotally connected to a pin 11 b that pivotally supports the upper link 9 with respect to the arm side bracket 13.
The pair of left and right hydraulic cylinders 5 are expanded and contracted so that the parallel quadruple link mechanism 4 is operated to move up and down and move back and forth while maintaining the elevator 1 in a horizontal posture. As shown in FIG. 14 (a), there is a lowered position A1 where the elevator 1 is lowered to the ground G or close to the ground G while being moved in the direction away from the vehicle V from the rear to the outside of the vehicle V. As shown in FIG. 14 (b), the elevator 1 is moved up and down over a lift position A2 where the elevator 1 is moved to a position close to the floor F of the vehicle V. It is configured to be operable.

A through hole is provided in the left wall surface of the left link cover 14 of the pair of link covers 14 provided on the left and right, and the lower link 10 is pivotally supported with respect to the base frame side bracket 8 through the through hole. A pin 12a is extended to the outside of the link cover 14.
As shown in FIG. 5, the encoder bracket 43 is erected on the left base plate 41 on the left outer side of the left machine frame side bracket 8, and the encoder bracket 43 responds to the rotation of the pin 12 a. A rotary encoder 15 for outputting pulses.

  As shown in FIGS. 4, 6, and 7, the lifting frame 2 is formed in a U-shape with the top opened when viewed from the rear side, and the lifting platform 1 held by the lifting frame 2 is , Provided on both lateral sides of the lifting platform 1 along the inside and outside of the vehicle and protruding upward from the mounting surface 1F of the lifting platform 1 so as to be slidable in the lifting frame 2 in the vehicle outside and inside direction. The elevator 1 is configured to be slid in the vehicle inside / outside with respect to the elevator frame 2 while being guided by the supported guide rail 21.

More specifically, a plurality of sliding idle rollers 17 that rotate around the horizontal axis are projected from the left and right wall surfaces of the lifting frame 2 inward, and the right wall surface has a vertical axis. A plurality of guide idler rollers 20 rotating around the center and a sliding electric motor 19 having a pinion 18 are attached.
A sliding idler roller 17 provided on the left side of the elevating frame 2 is fitted into the left guide rail 21 of the pair of left and right guide rails 21 provided on both lateral sides of the mounting portion 1, and the right side A slide idle roller 17 and a guide idle roller 20 provided on the right side of the elevating frame 2 are fitted into the guide rail 21.
The lifting platform 1 is held by the plurality of sliding idle rollers 17 provided on the lifting frame 2 so as to be slidable in the front-rear direction with respect to the lifting frame 2, and the guide idler roller 20. Thus, the roll of the lifting platform 1 relative to the lifting frame 2 is prevented.

Further, as shown in FIG. 6, a rack 24 is fixed to the right guide rail 21 so as to be fitted therein, and the pinion 18 is meshed with the rack 24, so that the sliding electric motor 19 is driven forward and reverse. As a result, the rail rolling roller 23 provided on the lifting platform 1 rolls on a pair of left and right rails 25 provided on the floor F of the vehicle V, and the lifting platform 1 moves relative to the lifting frame 2. Are configured to slide in and out of the vehicle.
That is, as shown in FIG. 14C, the lifting platform 1 slides inward of the vehicle with respect to the lifting frame 2, and the vibration prevention provided at the forefront of the rail 25 as shown in FIG. A storage position A3 in which the rail idler roller 23 provided on the outer surface of the guide rail 21 is fitted between the member 26 and the rail 25 to prevent the vertical movement of the elevator 1 and FIG. As shown in (b), the lifting platform 1 slides outward with respect to the lifting frame 2 so that the lifting platform 1 slides over the above-mentioned ascending position A2 protruding outward from the vehicle V. It is configured.

As shown in FIG. 4, a plate-like front receiving body 27 is pivotally attached to the front end portion of the elevating frame 2, and the front receiving body 27 is supported by the elevating frame of the elevating platform 1. 2 is configured to be switched between a substantially horizontal storage posture and an upright swinging posture.
A rear receiving body 28 as a receiving body is pivotally attached to the rear end portion of the lifting platform 1 so that the wheelchair C moves outward from the lifting platform 1. A blocking posture in which the wheelchair C is raised and swung upward to receive and block the movement, and an allowable posture in which the wheelchair C is swung to the rear side to allow the wheelchair C to move rearward and outward from the lifting platform 1 It is configured to be switchable to a retracted posture that is tilted and swung forward to store.
On the right side of the rear part of the elevator 1, a support column 52 is provided, which includes a seat belt 51, a handrail 29, a manual lever 42 for switching the rear receiving body 28, an electric motor 36 for the rear receiving body, and the like. . A stopper 53 for the seat belt 51 is provided on the left side of the rear end portion of the lifting platform 1.

Next, the configuration of the lifting platform 1 will be described in detail. As shown in FIG. 4, the lifting platform 1 includes a mounting frame 46 that forms a mounting surface 1F on which the wheelchair C is mounted, and the mounting frame 46. The guide rail 21 is connected to the left and right sides, and the support column 52 is erected on the left side of the rear end of the mounting frame 46. A mat (corresponding to a covering) 55 is mounted on the mounting frame 46 so as to form a mounting surface 1F. The mat 55 is made of synthetic resin and is attached to the mounting frame 46. Has been.
As shown in FIG. 10, the mounting frame 46 includes four horizontal frame members 48 provided in a state along the left-right direction, three vertical frame members 49 provided in a state along the front-rear direction, The plate frame material 47 is supported by the horizontal frame material 48 and the vertical frame material 49, and the plate frame material 47 is provided with a fixing device R for fixing the wheelchair C to the lifting platform 1. . The guide rails 21 are welded to both lateral sides of the lifting platform 1, and the base portion 52 a of the support column 52 is welded to the right rear portion of the lifting platform 1.
Of the four horizontal frame members 48, the three horizontal frame members 48 are arranged on the front side of the plate-like frame member 47, and the remaining one horizontal frame member 48 is arranged on the rear side of the plate-like frame member 47. The two vertical frame members 49 are arranged on the left side of the plate-shaped frame member 47 in a state where the three vertical frame members 49 are positioned between the horizontal frame members 48 provided to be separated in the front and rear directions. Then, the remaining one vertical frame member 49 is disposed on the right side of the plate-like frame member 47.

The three horizontal frame members 48 provided on the front side of the fixing device 47 are welded to each other while being arranged in the front-rear direction. The welding between the horizontal frame members 48 will be described. As shown in FIG. 11, the fitting convex portion 48a and the fitting concave portion 48b in which the fitting convex portion 48a is fitted to the mutually facing surfaces of the adjacent horizontal frame members 48. And are formed. In one horizontal frame member 48 in the adjacent horizontal frame member 48, a welding recess 48c is formed on the bottom surface of the end portion on the side where the other adjacent horizontal frame member 48 is located.
In other words, the welding recesses 48c are used on the back surface in a state in which the adjacent horizontal frame members 48 are fitted to the fitting protrusions 48a and the fitting recesses 48b are fitted to make the upper surfaces of the adjacent horizontal frame members 48 flush with each other. By welding the adjacent horizontal frame members 48, the horizontal frame members 48 can be welded so that there is no unevenness on the lower surface as well as the upper surface.
The welding of the adjacent vertical frame members 49 and the welding of the vertical frame members 49 and the guide rails 21 are performed in the same manner as the welding of the vertical frame members 48, and thus description thereof is omitted.

As shown in FIG. 12, each of the pair of left and right guide races 21 is provided with a rail cover 50 that covers the upper surface and the side surfaces thereof, and the rail cover 50 is attached to the edge on the elevator platform 1 side. The cover portion 50 </ b> A is provided to cover the side edge portion of the mat 55 from above. In other words, the edge portion of the rail cover 50 on the lifting platform 1 side has a thick portion 50b and a cantilevered protrusion portion 50a directed inward from an upper portion of the thick portion 50b when viewed from inside and outside the vehicle. The covering portion 50A is formed by the protruding portion 50a.
Then, with the bent portion 50c formed on the edge opposite to the lifting platform 1 side engaged with the guide rail 21, the thick portion 50b is fixed to the guide rail 21 of the lifting platform 1 with a tapping screw. By wearing, the rail cover 50 is attached to the guide rail 21. In this attached state, the cover 55A is configured to press and hold the mat 55.

  As shown in FIG. 13, the vehicle elevating / lowering device having such a configuration includes a pump electric motor M, a slide electric motor 19, and a rear receiving body electric that are linked to the hydraulic pump 6 by a control device H. The operation of the motor 36 and the like is configured to be controlled, and the control device H is configured to receive a pulse signal from the rotary encoder 15 and an operation signal from the manual pendant operation tool 54. ing. The pendant operation tool 54 is provided on the left lifting arm 3.

  The operation of the vehicle lifting device by the control device H will be described. First, the case where the wheelchair C is transferred from the vehicle V onto the ground G will be described. As shown in FIG. When the lowering button 47a is pushed, the sliding electric motor 19 is driven to rotate and the pinion 18 is rotated, whereby the lifting platform 1 is drawn to the lifting frame 2 side by the action of the pinion 18 and the rack 24, and is lifted and lowered. The platform 1 slides from a storage position A3 stored on the vehicle inner side as shown in FIG. 12 (c) to an ascending position A2 on the vehicle outer side as shown in FIG. 12 (b) and stops.

  Thereafter, the pump electric motor M is rotationally driven, and the pair of left and right hydraulic cylinders 5 are shortened by supplying hydraulic oil, whereby the lifting platform 1 held by the lifting frame 2 by the action of the parallel quadruple link mechanism 4. Is lowered from the raised position A2 as shown in FIG. 12 (b) toward the lowered position A1 on or near the ground as shown in FIG. When the motor is lowered to a preset lowering height near the lowering position A1, the rotational driving speed of the electric motor M for pump is decelerated and gradually lowered to the lowering position A1 and stopped.

  By pushing and operating the open button 47a of the pendant type operation tool 47 in a state where the elevator 1 is in the lowered position A1, the rear receiving body electric motor 36 is activated and the rear receiving body 28 is blocked as described above. It is configured to be switched from a posture to an allowable posture.

  Next, a case where the wheelchair C is transferred from the ground G into the vehicle V will be described. As shown in FIG. 12 (a), the pendant-type operating tool 41 is in a state where the lifting platform 1 is located at the lowered position A1. When the raising button 54b is pressed, the rear receiving body 28 is switched to the blocking posture, and in other states, the rear receiving body 28 is operated to switch the rear receiving body 28 from the allowable posture to the blocking posture. When the electric motor M is rotated and the pair of left and right hydraulic cylinders 5 is extended by supplying hydraulic oil, the lifting platform 1 held by the lifting frame 2 by the action of the parallel quadruple link mechanism 4 is shown in FIG. From the descending position A1 as shown in FIG. 12 (a), it moves up to the ascending position A2 while moving forward in a substantially horizontal posture, and rises to a preset set ascending height near the ascending position A2. Then gently lowered to the raised position A2 by decelerating the rotational driving speed of the pump electric motor M is stopped.

  Thereafter, the slide electric motor 19 is driven to rotate and the pinion 18 is rotated, whereby the lift 1 is pushed inwardly of the vehicle by the action of the pinion 18 and the rack 24. The vehicle slidably moves from the vehicle outer side ascending position A2 as shown in FIG. 12 (b) to the vehicle inner side retreat position A1 as shown in FIG.

[Another embodiment]
(1) In the above embodiment, the mat portion 55 is fixed to the lifting frame 1 by fixing the thick portion 50b so that the mat 55 is held by the protruding portion 50a as the cover portion 50A. You may comprise so that 50 A of cover parts may be fixed to the mounting part 1 in the state pinched | interposed into. Further, the cover portion 50A may be configured to be separated upward from the mat 55 in a state where the rail cover 50 is attached to the guide rail 21, and the mat 55 may be configured not to be held down by the cover portion 50A. Good.

(2) In the above embodiment, a wagon is shown as an example of the vehicle V, and an example in which a vehicle elevating device is attached to the rear of the wagon is shown. However, as the vehicle V, ordinary passenger cars, buses, trucks, etc. The present invention can be applied to various vehicles, and the mounting location may be mounted on the middle portion of the vehicle V in the front-rear direction.

Perspective view of vehicle lifting device Plan view of the vehicle lifting device Perspective view of parallel quadruple link mechanism Perspective view of lifting frame and lifting platform The figure which shows the principal part of the raising / lowering apparatus for vehicles Vertical rear view of the lifting frame and lifting platform Vertical rear view of the lifting frame and lifting platform Plan view of base frame Left side view of the base frame Plan view showing a state where the mat of the lifting platform is removed Partial cross-sectional side view of lifting platform Front view showing a state where the guide rail is mounted Control block diagram Action diagram of vehicle lifting device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Placement part 1F Placement surface 2 Lifting frame 21 Guide rail 50 Rail cover 50A Cover part 50a Protrusion part 50b Thick part 55 Covering body C Mounted body V Vehicle

Claims (3)

The mounting portion configured to be able to mount the mounted body is supported by a lifting frame that can be lifted and lowered with respect to the vehicle, and is at the same height as or substantially the same as a lowered position on or near the ground and the floor of the vehicle. It is configured to be moved up and down to the rising position located at the same height, and protrudes above the placement surface of the mounting portion in a state along the inside and outside of the vehicle on both lateral sides of the mounting portion. The above-mentioned mounting portion is slidably operated in the vehicle inside / outside direction with respect to the lift frame while being guided by a guide rail that is provided in a state of being supported by the lift frame so as to be slidable in the vehicle inside / outside direction. The vehicle lifting device is configured such that the guide rail is provided with a rail cover that covers an upper surface and a side surface of the guide rail. The lateral end of the covering mounted to form the mounting surface described above A vehicle elevating device configured to include a cover portion that covers an edge portion from above.   The vehicle lifting / lowering device according to claim 1, wherein the rail cover is configured to hold the covering body at the covering portion.   The edge portion on the mounting portion side of the rail cover has a stepped shape including a thick portion and a cantilevered projecting portion directed inward from an upper portion of the thick portion in the vehicle inside / outside direction. The vehicle lifting / lowering device according to claim 1 or 2, wherein the vehicle lifting / lowering device is formed so that the protruding portion constitutes the covering portion, and the thick portion is fixed to the mounting portion.

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