JP3266860B2 - Vehicle lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base frame fixedly mounted on a vehicle, a lifting frame provided with a mounting portion of a mounted body at a lower end thereof, and a mounting portion on or near the ground. The base frame so as to raise and lower the lifting frame in a parallel or substantially parallel posture in a descending state in which the mounting portion rises and in a rising state in which the mounting portion rises to the same height or substantially the same height as the floor of the vehicle. And a pair of links interposed in a state of forming a parallel quadruple link mechanism between an upper end portion of the lifting frame, and lifting drive means for lifting and lowering the pair of links for raising and lowering the lifting frame. The present invention relates to an elevating device for a vehicle provided with.

[0002]

2. Description of the Related Art Such a vehicle elevating device is, for example,
While the user is sitting on the wheelchair as the object to be mounted, place the wheelchair on the mounting part, and raise / lower the lifting frame by the lifting / lowering driving means, and move the wheelchair from the ground side to the floor of the vehicle. It is used for transferring or transferring from the floor of the vehicle to the ground.

[0003] There have conventionally been proposed various types of lifting devices having such structures. For example, the lifting frame is formed of a U-shaped member having a cross-sectional shape, and the mounting portion is substantially in contact with the floor of the vehicle. In the raised state raised to the same height, a pair of links are housed in the U-shaped space of the lifting frame, and the upper end portion of the lifting frame to which the pair of links are connected is the U-shaped. There is a known one configured to be covered by a mold elevating frame (for example, see Japanese Patent Application Laid-Open No. 9-263173).

The upper link of the pair of links, which is located on the upper side when the lifting frame is lowered, is formed of a member having a U-shaped cross section, and the lower link located on the lower side of the upper link. Is also known in which a part of the upper part is covered by an upper link having a U-shaped cross section (for example, see Japanese Utility Model Publication No. 1-252323).

[0005]

However, in the above-mentioned prior art, a parallel quadruple is provided in a lowering state in which the mounting portion is lowered to the ground side, or in the middle of ascending and descending from the lowering state to the ascending state. A pair of links constituting the link mechanism is exposed from the lifting frame having a U-shaped cross section, and the exposed link operates, which may give a dangerous feeling to the user. Also in the related art, a part of the lower link is exposed during the lowering state of the mounting portion or during the ascent / descent, so that there is a possibility that the user may still feel danger. In particular, when used for raising and lowering a wheelchair, the link exposed in front of the user sitting in the wheelchair is activated, so that there is a greater sense of danger and there is a risk of giving anxiety during use.

The present invention has been made to overcome the above-mentioned drawbacks, and has as its object to raise and lower the mounting portion without giving a danger to the user, especially for wheelchairs. An object of the present invention is to provide a suitable vehicle lifting device.

[0007]

According to the first aspect of the present invention, there is provided an elevator frame having a pair of links forming a parallel quadruple link mechanism and a mounting portion at a lower end side. The upper end portion connected to the pair of links is provided with a cover body that covers at least the two lateral sides in the entire range of elevating the elevating frame, so that the mounting portion is on the ground or In the entire range from the descending state descending near to the ascending state ascending to the same or substantially the same level as the floor of the vehicle, the upper end portion connected to the pair of links and the pair of links in the elevating frame is At least both sides are covered in series by a cover body, and at least the most dangerous working parts can be prevented from touching the user's eyes as much as possible, even when used for raising and lowering wheelchairs. , For the user who is sitting in a wheelchair, never give a dangerous sense unnecessary.

According to the second aspect of the present invention, the cover body surrounds the pair of links and the upper end portion of the lifting frame which is connected to the pair of links so as to entirely surround them. As described above, not only the operating portion that is most likely to give a sense of danger, but also the entire upper end portion of the pair of links and the lifting frame is surrounded by a cover body, as described above. Feeling can be eliminated.

According to the third aspect of the present invention, the cover unit is attached to the lower link of the pair of links which is located on the lower side when the lifting frame is lowered. When fixedly mounted on the vehicle, the lifting device can be stably mounted in a low posture. In other words, in the pair of links constituting the parallel quadruple link mechanism, since the distance between the two links changes with the elevating operation, it is attempted to surround the entire pair of links with the cylindrical cover regardless of the elevating operation. Then, it is necessary to adjust the size of the cover to a state in which the distance between the two links is the longest.
Therefore, when the cover body is attached to the upper link, a gap is created between the lower link and the cover body when the lifting frame is lowered, and the cover body is positioned below the lower link by the gap, so that the vehicle In order to prevent the cover from coming into contact with the floor or the like, it is absolutely necessary to mount the entire device including the parallel quadruple link mechanism on the vehicle in a high attitude.
In that regard, when the cover body is attached to the lower link, the cover body moves up and down integrally with the lower link, so that only a minimum necessary gap is required between the lower link and the cover body. The whole can be stably mounted on the vehicle in a low attitude.

According to the fourth aspect of the present invention, the upper end portion of the lifting frame connected to the pair of links has an arc-shaped portion centered at or near a connection point with the lower link, Since the opening having a size through which the arc-shaped portion is inserted is formed at the end of the lifting frame side of the cover body, the opening for inserting the lifting frame extending from the cover body to the outside is reduced to a necessary minimum size. It is also possible to do. That is, as described above, the cover body is attached to the lower link, and is configured to move up and down integrally with the lower link, and further, a circle centered on or near the connection point between the lower link and the lifting frame. An arc-shaped portion is provided in the elevating frame, and the arc-shaped portion of the elevating frame is configured to pass through the opening provided in the cover body. The relative position of the arc-shaped portion does not change much, so that the size of the opening provided in the cover body can be made as small as possible, and when the center of the arc-shaped portion is coincident with the connection point, the necessary minimum size It is also possible to Therefore, of the pair of links constituting the parallel quadruple link mechanism, in the vicinity of the portion connected to the elevating frame, the pair of links hardly touches the user's eyes, and a sense of danger accompanying the operation of the links. Can be wiped out.

According to the fifth aspect of the present invention, of the pair of links, when the lifting frame is lowered, the upper link located on the upper side and the two lateral surfaces and the upper surface of the connecting portion between the upper frame and the lower frame are connected. Since the second cover body for covering and the third cover body for covering both lateral surfaces of the connecting portion between the lower link and the base frame are provided, as described above, the pair of links and In addition to the upper end side of the frame connected to the pair of links, the connection point between the upper link and the base frame and the connection point between the lower link and the base frame are completely covered by the second and third cover bodies. become. And while the third cover body is fixed to the base frame, the second cover body is configured to be rotatable around the connecting point of the upper link to the base frame or in the vicinity thereof, If the second cover body is configured to rotate in accordance with the movement of the cover body described above, the pair of links can be seen by the user regardless of the elevating operation of the parallel quadruple link mechanism. Touching is completely prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle elevating device according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, for example, such an elevating device is used by being attached to a rear portion thereof in a vehicle V such as a wagon equipped with a vertically openable door D at the rear portion. Elevating table 1 as a mounting section on which a wheelchair C, which is an example of a mounted body, is mounted and raised, a holding frame 2 holding the elevating table 1, and a lifting frame supporting the holding frame 2 at the lower end. A pair of left and right arms 3, a pair of left and right parallel quadruple link mechanisms 4 for connecting the pair of left and right arms 3 to the vehicle V side, and a lifting drive for driving the lifting and lowering table 1 by driving the left and right parallel quadruple link mechanisms 4 A pair of left and right hydraulic cylinders 5 as means, and a hydraulic cylinder 5
And an electric pump 6 for supplying hydraulic oil to the cylinder V, and can be fixed to a rear portion of the vehicle V via a base frame 7 that supports the parallel quadruple link mechanism 4.

Next, the details of each device and members will be described. In this specification, for the sake of convenience, the forward direction of the vehicle V is referred to as forward, and the reverse direction is referred to as rear. The direction is specified and described.

As shown in FIGS. 3 and 4, the base frame 7 has a base frame-side bracket 8 protruding upward at both left and right ends thereof, and an upper link 9 constituting the parallel quadruple link mechanism 4.
And one end of the lower link 10 are pivotally connected to the base frame side bracket 8 via pins 11 and 12, respectively, and the other end of the upper link 9 and the lower link 10 is provided at the upper end of the arm 3. The left and right links 9 and 10 and the two brackets 8 and 13 form a left and right parallel quadruple link mechanism 4 which is pivotally connected to the arm-side bracket 13 via pins 14 and 15, respectively. In the parallel quadruple link mechanism 4 on the left side, the pin 12 for pivotally connecting the lower link 10 to the base frame-side bracket 8 has a lower link 10
It is fixed to the side and is configured to rotate integrally with the lower link 10. As shown in FIG. 5, the arm 3 is formed of a hollow pipe member having an elliptical cross-sectional shape, and the lower ends of a pair of left and right arms 3 are provided with holding members for the elevator 1 as shown in FIG. A frame 2 is attached, the elevating table 1 is held by the holding frame 2 so as to be slidable in the front-rear direction, and a mounting portion between the arm 3 and the holding frame 2 is covered by a holding frame cover 16 made of synthetic resin. Have been done.

The hydraulic cylinder 5 is a backward-acting cylinder, and its cylinder side is pivotally connected to the base frame side bracket 8 so as to be rotatable relative to a pin 12 for pivotally supporting the lower link 10. , Rod side is arm side bracket 1
The entirety of the parallel quadruple link mechanism 4 including the hydraulic cylinder 5 is pivotally connected to a pin 14 that pivotally supports the upper link 9 with respect to the link 3. Then, by expanding and contracting the pair of left and right hydraulic cylinders 5, as shown in FIG. 12, the holding frame 2 and the elevator 1 are maintained in a horizontal posture by the action of the parallel quadruple link mechanism 4. The floor surface of the vehicle V by moving the elevator 1 to the ground G while moving it to the rear outside of the vehicle V, or by moving the elevator 1 down to the vicinity of the ground G, It is configured to be able to ascend and descend to an ascending state of ascending or substantially as high as F.

The link cover 17 is made of a synthetic resin. As shown in FIGS. 3 and 4, a first cover 18 surrounding the parallel quadruple link mechanism 4 and the hydraulic cylinder 5 is provided.
A second cover body 19 covering the front end of the upper link 9;
A total of three cover members 18, including a third cover member 20 covering a pivotal connection point between the lower link 10 and the base frame side bracket 8,
19 and 20. First cover body 18
Are two cover brackets 2 fixed to the lower link 10.
The lower link 10 is attached to the base frame bracket 8 and is configured to rotate integrally with the lower link 10 around a pivot pin 12 of the lower link 10 with respect to the base frame side bracket 8.

The second cover 19 has a U-shaped cross section, and is mounted so as to be rotatable about a pivot pin 11 of the upper link 9 with respect to the base bracket 8. The free end is located inside the first cover body 18,
The free end portion is elastically urged by a spring (not shown) so as to contact the upper lower surface of the first cover body 18. It is configured to cover both side surfaces and the upper surface. The third cover body 20 is fixed to the base frame 7 in a state of being located inside the second cover body 19, and the left and right sides of the pivotal connection point between the base frame side bracket 8 and the lower link 10. It is configured to cover the surface and the base frame side bracket 8.

The first cover body 18 is formed in a tubular shape having a rectangular cross section and a bottom, and has an open end at the base frame-side bracket 8 and a position at the arm-side bracket 13. The bottomed end is formed in a smooth shape so as to be semicircular in a lateral side view, and an opening 18a through which the arm 3 penetrates is provided below the semicircular end. I have. As shown in FIG. 5, the opening 18a has a width W in the horizontal direction slightly larger than the width in the horizontal direction of the arm 3 and a length L slightly larger than the width in the vertical direction of the arm 3. It is configured to be long.

That is, the upper end portion of the arm 3 near the connection with the parallel quadruple link mechanism 4 is formed in a partial arc shape centering on the pin 15 pivotally supporting the lower link 10 and the arm side bracket 13. The arm 3 has an arcuate portion 3a penetrating the opening 18a. Thus, the first cover body 18 is connected to the lower link 10.
11A and 11B, the arc-shaped portion 3a is configured to rotate integrally with the first cover body 18 and to pass through the opening 18a provided in the first cover body 18. 11), the upper link 9 and the lower link 10 of the parallel quadruple link mechanism 4 are in a substantially horizontal posture and the elevator 1 is in a grounding posture, and as shown in FIG. After the parallel quadruple link mechanism 4 rises upward, the parallel quadruple link mechanism 4 and the arm 3 assume a standing posture in which the parallel quadruple link mechanism 4 and the arm 3 slightly incline forward as shown in FIG. Is changed to the storage posture, the relative positional relationship of the arc-shaped portion 3a with respect to the opening 18a of the first cover body 18 does not change.
The length L of the opening 18a provided in the arm 3 is almost the same as the longitudinal width of the arc-shaped portion 3a of the arm 3. In the storage posture shown in (c) of FIG. 11, by securing a gap S between the first cover body 18 and the arm 3, the finger is not pinched.

A first cover body 18 provided in a pair on the left and right sides
Of these, a through hole is provided in the left wall surface of the first cover body 18 on the left side, and the pin 12 for pivotal support of the lower link 10 with respect to the base frame side bracket 8 penetrates the through hole. As shown in FIG. 8, a dog plate 23 having an upper end dog 23 a and a lower limit dog 23 b is attached to the extending end thereof, and the dog plate 23 is extended to the outside of the cover body 18.
It is configured to rotate integrally with the pin 12 and the lower link 10. The base frame 7 is provided with an upper limit detection limit switch 24a and a lower limit detection limit switch 24b. When the upper limit dog 23a of the dog plate 23 contacts the upper limit detection limit switch 24a, the hydraulic cylinder 5 Is stopped, and the lowering dog 23b comes into contact with the lower limit detecting limit switch 24b, so that the lowering of the lifting platform 1 by the hydraulic cylinder 5 is stopped.

The holding frame 2 is formed in a rectangular shape in plan view as shown in FIG. 7, and is formed in a U-shape whose upper part is open when viewed from the rear side as shown in FIGS. And a pair of front and rear slide idler rollers 2 that rotate inward from the left and right wall surfaces inward about the axis in the lateral direction.
5 are respectively protruded, and a sliding electric motor 27 having a pinion 26 is attached to the left wall surface, and the right wall surface rotates inwardly around the vertical axis. A pair of front and rear guide idler rollers 28 protrude. The lifting platform 1 held by the holding frame 2 is formed in a rectangular shape in plan view, and rail members 29 and 30 are provided on left and right side surfaces thereof, and extend laterally outward. Sliding idler rollers 31 that rotate around the axis are protruded from each other.

Above the left and right rail members 29 and 30 provided on the elevator 1, a guide portion 29 having a C-shaped cross section is provided.
a and 30a are provided. A pair of front and rear sliding idle rollers 25 provided on the left side of the holding frame 2 are fitted in the left guide portion 29a, and the holding frame is provided in the right guide portion 30a. A slide idler roller 25 and a guide idler roller 28 provided on the right side of 2 are fitted inside.
The lifting platform 1 is held slidably in the front-rear direction with respect to the holding frame 2 by a total of four sliding idle rollers 25 provided on the holding frame 2, and the guide idle rollers are provided. By 28, the horizontal movement of the lifting platform 1 with respect to the holding frame 2 is prevented.

The left rail member 29 of the elevating platform 1 is provided with a fitting portion 29b having a U-shaped cross section which is opened downward when it is located below the guide portion 29a.
The rack 32 is fitted inside the fitting portion 29b and is fixed to the rail member 29. The pinion 26 is interlocked with the rack 32, and the elevation table 1 is configured to be able to reciprocate in the front-rear direction with respect to the holding frame 2 by forward / reverse rotation driving of the electric motor 27 for sliding. In the state of sliding in the direction, the sliding idler roller 31 provided on the lift 1 rolls on a pair of left and right rails 33 provided on the vehicle V side, and in the storage posture positioned at the forefront, The slide idler roller 31 is fitted between the vibration preventing member 34 provided at the forefront of the rail 33 and the rail 33, so that the vertical movement of the elevator 1 is prevented. .

At the front end of the holding frame 2, a plate-shaped foot protector 35 is rotatably pivotally mounted so as to be switchable between a storage position in which it is substantially horizontal and a standing position in which it is swung upward. A flapper 36 is rotatably connected to the rear end of the elevating platform 1 so that the flapper 36 can be switched between an upright posture swinging upward and an operating posture in which the free end is installed on the ground G. A handrail 37 is provided on the left side of the lift 1. The cylinder electric pump 6 that supplies hydraulic oil to the pair of left and right hydraulic cylinders 5 is mounted on the vehicle V at a position on the left side of the left parallel quadruple link mechanism 4, and is connected to the cylinder electric pump 6. The left and right hydraulic cylinders 5 are connected by piping, and various switching valves, relief valves, and the like are interposed in the piping system.
Covered by

Next, the operation of the lifting device will be described. The lifting device is usually stored in the vehicle V,
When necessary, the rear opening / closing door D is opened, and the down button of the pendant-type operation tool 39 is pressed and operated. Then, the sliding electric motor 27 is driven to rotate, and with the rotation of the pinion 26, the action of the pinion 26 and the rack 32 causes
The elevator 1 is pulled toward the holding frame 2, and the electric motor 27 for sliding stops based on a signal from a limit switch (not shown), and stops while the elevator 1 is held by the holding frame 2.

That is, the slide idler roller 31 provided on the elevator 1 rolls on the rail 33 and is drawn to the holding frame 2 side. Left and right guide portions 29a, 30a of the lifting platform 1
The guide idler roller 28 is fitted inside the guide portion 30a on the right side and provided on the holding frame 2.
The elevating table 1 is held by the holding frame 2 via the slide idle rollers 25. Then, the slide movement of the elevator 1 is stopped by a signal from a limit switch (not shown), and in a state where the elevator 1 is stopped, the foot protector 35 in the storage position is rotated upward and switched to the standing position.

Thereafter, the cylinder electric pump 6 is driven to rotate, and the hydraulic oil is supplied to the pair of left and right hydraulic cylinders 5 so that the two hydraulic cylinders 5 are extended, and the parallel quadruple link mechanism 4 is made vertical. At this point, both hydraulic cylinders 5 are shortened, and the lifting platform 1 held by the holding frame 2 is lowered while moving rearward in a substantially horizontal posture by the action of the parallel quadruple link mechanism 4. Dog 23b for lower limit of dog plate 23
Abuts on the lower limit detection limit switch 24b, the lowering of the holding frame 2 by the hydraulic cylinder 5 is stopped. In the stopped state, the lift 1 held by the holding frame 2 is substantially parallel to the ground G, and It is almost in contact with the ground G.

Next, the flapper 36 is manually operated.
Is turned to ground the free end, and the wheelchair C is placed on the lift 1 from the flapper 36 by the push operation of the caregiver or by itself, and as shown in FIG. The flapper 36 is switched to the upright posture again, and the wheelchair C is fixed to the elevator 1 by a fixing device (not shown) as necessary. When the lifting button of the pendant-type operating tool 39 is pressed after the mounting of the wheelchair C on the lifting platform 1 is completed, first, the hydraulic oil from the cylinder electric pump 6 is operated in a reverse direction to the above-described downward movement. Is supplied to the pair of left and right hydraulic cylinders 5, the two hydraulic cylinders 5 are shortened, and the elevator 1 moves forward while ascending while maintaining a substantially horizontal posture, and when the parallel quadruple link mechanism 4 becomes vertical. When the hydraulic cylinders 5 extend and the upper-limit dog 23a of the dog plate 23 contacts the upper-limit detection limit switch 24a, the lifting of the lifting platform 1 by the hydraulic cylinder 5 is stopped. As shown in (b), the elevator 1 is placed on the vehicle V.

In this mounting position, the slide idler roller 31 on the lift platform 1 side is mounted on the rail 33 on the vehicle V side, and then the electric motor 27 for slide rotates in the reverse direction. The lift 1 is pushed forward from the holding frame 2 with the rotation of the pinion 26, and the slide idler roller 31 rolls on the rail 33, based on a signal from a limit switch (not shown). As a result, the sliding electric motor 27 stops. When the platform 1 is stopped,
The foot protector 35 that was in the upright posture is rotated to be switched to the storage posture, and, as shown on the right side of FIG.
Is fitted between the rail 33 and the vibration preventing member 34, the storage posture shown in FIG. 12C is reached, and if necessary, the wheelchair C is lowered from the elevator 1 and further moved forward to move the vehicle forward. V, and then the vehicle V is started.

[Another Embodiment] (1) In the above embodiment, a pair of left and right parallel quadruple link mechanisms 4 are connected to the base frame 7 and the arms 3 Are shown, but the parallel quadruple link mechanism 4 and the arm 3 may be provided on only one of the left and right sides, and the lift 1 may be raised and lowered in a cantilever manner. In addition, the holding frame 2 is attached to the lower end of the arm 3 and the elevator 1 is held by the holding frame 2, but the elevator 1 is attached to the lower end of the arm 3.
, The wheelchair C is transferred between the elevator 1 and the floor F of the vehicle V, and the elevator 1 is folded and stored in the vehicle V. Can also.

(2) In the above embodiment, an example was described in which the hydraulic cylinder 5 was used as the lifting drive means for driving and operating the parallel quadruple link mechanism 4. However, other than the cylinder, for example, a screw rod and a nut may be used. By using a member, the screw rod or the nut member is driven forward and reverse by an electric motor, so that the parallel quadruple link mechanism 4 can be driven and operated.
Further, the parallel quadruple link mechanism 4 may be configured to be driven to rotate forward and reverse by the manual operation of the screw bar or the nut member by manual operation.

(3) In the above embodiment, in addition to the first cover member 18 that covers the upper and lower links 9, 10 and the connecting portion between the two links 9, 10 and the arm-side bracket 13, the second cover Although the configuration in which the cover body 19 and the third cover body 20 are provided is shown, it is also possible to eliminate the second and third cover bodies 19 and 20 and provide only the first cover body 18 for implementation. . In this case, the first cover body 18 is necessarily formed in a tubular shape, and the upper end portion of the arm 3 including the upper and lower links 9 and 10 and the connecting portion between the two links 9 and 10 and the arm side bracket 13 is formed. It is not necessary to completely surround the entire circumference.

(4) In the above embodiment, the pin 1 for pivotally supporting the lower link 10 and the arm-side bracket 13 to the arm 3
Although the example in which the arc-shaped portion 3a centered on 5 is provided is shown,
The center of the arc-shaped portion 3a may be slightly displaced from the pin 15, and various changes are possible, such as a curved shape close to an arc instead of the arc-shaped portion 3a.

(5) In the above embodiment, the wheelchair C is shown as an example of the object to be mounted. However, the object to be mounted on the elevator 1 is not limited to the wheelchair C, but may be an electric appliance or furniture. Various weights may be used.

(6) In the above embodiment, a wagon vehicle was shown as an example of the vehicle V, and an example in which a lifting device was attached to the rear of the wagon vehicle was shown. It can be applied to various vehicles such as ordinary passenger cars, buses, trucks, etc.
The present invention is not limited to the rear portion of the vehicle V, and may be mounted on an intermediate portion of the vehicle V in the front-rear direction and configured to lower the elevator 1 to the outside on the lateral side of the vehicle V.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lifting device for a vehicle.

FIG. 2 is a plan view of a vehicle elevating device.

FIG. 3 is an exploded perspective view of a parallel quadruple link mechanism and a cover.

FIG. 4 is a longitudinal sectional side view of a parallel quadruple link mechanism and a cover.

FIG. 5 is a developed view showing a relationship between an opening of a cover and an arm.

FIG. 6 is an exploded perspective view showing a holding frame and a lifting platform.

FIG. 7 is a plan view of a holding frame.

FIG. 8 is a side view of a dog that regulates a lifting range of the lifting platform.

FIG. 9 is a vertical rear view of the holding frame and the lifting platform.

FIG. 10 is a longitudinal rear view of a holding frame and a lifting platform.

FIG. 11 is a longitudinal sectional side view showing movement of a parallel quadruple link mechanism and a cover.

FIG. 12 is a side view showing the movement of the parallel quadruple link mechanism and the elevator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Placement part 3 Elevating frame 3a Arc-shaped part 4 Parallel quadruple link mechanism 5 Elevating drive means 7 Base frame 9 Upper link 10 Lower link 18 Cover body 18a Opening 19 Second cover body 20 Third cover body C Standing body F Floor surface G Ground V Vehicle

Continuation of the front page (56) References JP-A-10-67271 (JP, A) JP-A-9-20168 (JP, A) JP-A-8-300999 (JP, A) JP-A-8-113073 (JP , A) JP-A-10-87291 (JP, A) JP-A-9-263173 (JP, A) JP-A 1-26523 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB Name) B60P 1/44 A61G 3/00 502 B60P 3/00

Claims (5)

(57) [Claims] 1. A base frame fixedly mounted on a vehicle, an elevating frame provided with a mounting portion of a mounted body at a lower end side, and a lowered state in which the mounting portion is lowered on or near the ground. The upper end of the base frame and the elevating frame, so that the elevating frame is raised or lowered in a parallel or substantially parallel posture when the mounting portion is raised to the same height or substantially the same height as the floor surface of the vehicle. For a vehicle provided with a pair of links interposed in a state forming a parallel quadruple link mechanism between the first and second parts, and a lifting drive means for raising and lowering the pair of links for raising and lowering the lifting frame. An elevating device, wherein a pair of links and an upper end portion of the elevating frame, which are connected to the pair of links, at least cover both lateral sides of the elevating frame in the entire elevating range. Elevator for vehicles provided with a cover attached to the vehicle . 2. The cover body is formed in a tubular shape so as to surround the pair of links and an upper end portion of the lifting frame connected to the pair of links, in their entirety. Item 4. The vehicle lifting device according to Item 1. 3. The elevating device for a vehicle according to claim 2, wherein the cover body is attached to a lower link of the pair of links that is located on a lower side when the elevating frame is lowered. 4. An upper end portion of the lifting frame connected to the pair of links is provided with an arc-shaped portion centered on or near a connection point with the lower link. The vehicle lifting device according to claim 3, wherein an opening having a size through which the arc-shaped portion is inserted is formed at an end of the lifting frame. 5. A second cover body that covers both lateral surfaces and an upper surface of a connection point between the upper link and the base frame, which are located on an upper side in the lowering state of the lifting frame, of the pair of links, A third cover body is provided to cover both lateral surfaces of a connection point between the lower link and the base frame, and the second cover body rotates around the connection point of the upper link to the base frame or its vicinity. The vehicle elevating device according to claim 4, wherein the third cover body is movably configured, and the third cover body is fixed to the base frame.