JP3365295B2 - Vehicle lift - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for loading and unloading luggage or for getting on and off a disabled person seated in a wheelchair, for example, mounted on a van type vehicle or the like. About lift. 2. Description of the Related Art Conventionally, there is a vehicle lift 1 of this type, for example, as shown in FIG. 5. This vehicle lift 1 is provided at, for example, a rear opening of a vehicle body of a van type vehicle. The vehicle lift 1 includes a left-right pair of four-bar linkages 2, 2 pivotally connected to left and right swing arms 10, 10, and a platform 16 suspended from the front of the swing arms 10, 10.
And a storage holding column 13 for holding the storage unit in a foldable and storable manner. The left and right paired four-bar linkages 2, 2
Are formed in a symmetrical shape, and a long inner bracket 4 closer to the vehicle interior and a shorter outer bracket 5 closer to the exterior of the vehicle are provided upright at predetermined intervals on the floor 3 of the vehicle. At the upper ends of the brackets 4 and 5, a first link 6 located inside and a second link 7 located outside by a predetermined length are pivotally connected at their lower ends by shaft pins 8a and 8b. A swing arm 10 is pivotally connected to upper ends of the second link 6 and the second link 7 via shaft pins 9a and 9b. The swing arm 10 has a first link 6,
At the upper end of the second link 7, the shaft pins 9 a, 9 b are parallel to the line connecting the shaft pins 8 a, 8 b pivotally connected to the lower ends of the links 6, 7.
An inclined arm 11 of predetermined length pivotally connected by 9b;
A support arm 12 having a predetermined length is provided at an end of the inclined arm 11 and extends vertically. A platform 16 is held at the front of the left and right support arms 12 (closer to the vehicle) so as to be retractable. The storage holding column 13 is mounted. [0005] The storage holding column 13 is provided with the swing arm 10.
The lower bracket 14a is located on the side of the support arm 12 outside the vehicle.
And the upper bracket 14b. The lower end portions of the left and right storage holding columns 13 are connected by a connecting member 15, and the connecting member 15 is configured to be foldable at a central portion in the front-rear direction into a two-foldable load receiving body and a front end of the load receiving body. A platform 16 comprising a pivoted guide plate is pivotally mounted. The platform 16 is provided so as to be able to be stored and held between the storage holding columns 13 after being folded in two, and is provided so as to be able to place a load or a wheelchair by being expanded. An operating cylinder 19 is pivotally mounted between the four-bar linkage mechanism 2 and, for example, the shaft pins 8b and 9a. When the operating cylinder 19 is in the extended state, the platform 16 is moved to the raised end position (storage position). ), The swing arm 10 is swung out of the vehicle opening by the shortening operation, and the platform 16 is provided so as to contact the ground F. [0007] However, in this conventional vehicle lift 1, the first link 6 and the second link 6 are formed as the operating cylinder 19 is shortened and the swing arm 10 is swung. The gap t with the link 7 increases, the angle between the second link 7 and the inclined arm 11 of the swing arm 10 expands, and when the working cylinder 19 is extended, the gap t is shortened. The angle between the second link 7 and the inclined arm 11 is reduced. In particular, when the operating cylinder 19 is extended, the first link 6 of the four-bar linkage mechanism 2 is connected to a disabled person sitting on a wheelchair, for example. Since the tip side of the gap t with the second link 7 is close to the body, there is a problem that it becomes a danger area where hands, feet, etc. may be pinched. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. The present invention successfully follows the expansion and contraction between the links of the four-bar linkage mechanism and the expansion and contraction of the angle of the swing arm to shield the gap between the links. An object of the present invention is to provide a vehicle lift provided with cover means capable of preventing an accident. [0008] Accordingly, the present invention provides
A vehicle lift having the configuration described in the claims. When the platform is moved up and down between the retracted position and the ground contact position via the swing arm by the operating cylinders of the left and right four-bar linkages, the first of the four-bar linkages.
The link is moved while changing the gap between the link and the second link. The first link, the second link, and the first cover member, the second cover member, and the third cover member attached to the swing arm follow the change in the gap with the change in the gap between the first link and the second link. It moves in a sliding manner while maintaining the state where the tip side, which is the danger area of the gap, is shielded, ensuring safety by preventing luggage located on the platform or occupants sitting in wheelchairs from being caught in the gap can do. Further, since the gap can be shielded in the entire area during the elevating process with a simple configuration divided into three members of the first cover member, the second cover member, and the third cover member, the four-link mechanism of the existing vehicle lift is adopted. There are advantages that can be done. Next, an embodiment of the present invention will be described with reference to the drawings. Since the vehicle lift 1 according to the present embodiment is formed in substantially the same manner as described above, the same members are denoted by the same reference numerals, and the description thereof is omitted, and the vehicle lift 1 is attached to the four-bar linkage 2 and the swing arm 10. The gap t
The cover member 21 for shielding the cover will be described. The cover member 21 is made of a synthetic resin plate, for example, and includes a first cover member 22 attached to the first link 6 and a second cover member 25 attached to the second link 7 as shown in FIG. And a third cover member 28 attached to the inclined arm 11 of the swing arm 10. The first cover member 22 (indicated by a dashed line) is attached to the inner surface of the first link 6 (the center side of the vehicle). As shown in FIG. (Shows the state of the rising end of the lift), a mounting edge 22a of a predetermined length which is mounted substantially parallel to one edge 6a of the first link 6, and a shaft pin 9 on the upper end side of the mounting edge 22a.
An arc-shaped edge 22b is formed along the circumference a, and a shielding edge 23 is formed on the opposite side of the mounting edge 22a from the arc-shaped edge 22b. On the upper side of the shielding edge 23, an inclined edge 23a having a predetermined length is formed in parallel with the edge 11a of the inclined arm 11 of the swing arm 10.
a shaft pin 9 pivotally connected to the upper side of the second link 7
A relief edge 23b is formed on the inner side of FIG. 2b in a relief shape. The lower end of the bulging shield 24 is formed along the edge 6 b of the first link 6. A second cover member 25 (indicated by a two-dot chain line) attached to the inner surface of the second link 7 has an attachment edge 2 attached substantially parallel to one edge 7a of the second link 7.
5a and an upper edge 25 on the upper end side of the mounting edge 25a from the position before the shaft pin 9b toward the inner side surface of the first link 6.
b is formed, and the mounting edge 25a is continuously connected to the upper edge 25b.
, A shielding edge 26 is formed. On the upper side of the shielding edge 26, a relief recess 26a for releasing the shaft pin 9a is formed at the lower end of the lift as shown in FIG.
A convex shielding portion 26b is formed continuously with the relief concave portion 26a. The first cover member 22 thus formed
First, the second cover member 25 is attached to the mounting edge 2 at a predetermined position on the inner side of the second link 7.
The 5a side is fastened by a plurality of (shown at two places) clips 27a. The first cover member 22 is provided at a predetermined position above the first link 6 with a plurality of (three indicated) clips 27b on the mounting edge 22a side thereof.
Are mounted on the inner surface on the vehicle center side of the vehicle so as to be overlapped with each other.
The second cover member 25 is provided at the rising end of the lift in FIG.
And the first link 6 and the second link 7
The upper side of the gap t is shielded by the first cover member 22. The third cover member 28 is attached to the swing arm 10 pivotally attached to the upper ends of the first link 6 and the second link 7 to which the first cover member 22 and the second cover member 25 are attached. The third cover member 28 is connected to the swing arm 1.
The upper and lower shaft pins 9a and 9b of the first link 6 and the second link 7 are mounted in a predetermined range on the upper side of the inclined arm 11 in a crown shape.
Is formed in a substantially U-shaped cross section through a connection piece 30 attached to the edge of the inclined arm 11.
9a is substantially aligned with the upper end of the inclined arm 11, a lower edge 29b is formed at a predetermined interval from the upper edge 29a, and swells toward the first and second links 6, 7 between the upper and lower edges 29a, 29b. A shielding part 31 is formed. The shield 31 has an upper inclined edge 31a of a predetermined length substantially parallel to the edge 6a of the first link 6 as shown in FIG. A curved inclined edge 31b is formed from the upper inclined edge 31a toward the lower edge 29b. The third cover member 28 formed in this way is fixed to a predetermined position of the inclined arm 11 via the connection piece 30, so that the upper ends of the first and second links 6, 7 and the first cover member 22 and The upper end side of the second cover member 25 is shielded in a crown shape. Next, the operation of the cover member 21 attached to the four-bar linkage 2 as described above will be described. As described above, with the lift shown in FIG. 2 being located at the rising end (when the four-bar linkage 2 is in the retracted position), the gap t between the first link 6 and the second link 7 is reduced to reduce the gap t1. And the upper side of the gap t1 is the first cover member 2.
2. The second cover member 25 and the third cover member 28 are overlapped and shielded. Then, when the operating cylinder 19 of the four-bar linkage mechanism 2, 2 is shortened from the position where the lift is at the rising end, and the swing arm 10 swings out of the vehicle, the swinging process causes the first link 6 and the first link 6 to swing. The second link 7 includes shaft pins 8a, 8
b, the gap t1 between the first link 6 and the second link 7 is expanded and becomes the gap t2 as shown in FIG. 3, and at the same time, the first cover member 22 and the second cover The member 25 moves in a sliding manner. 3 shows a state in which the gap t2 between the first link 6 and the second link 7 is maximized in the swinging process of the swing arm 10, and the support arm 12 of the swing arm 10 Is always held vertically and raised and lowered. In this state, the first cover member 22
A part of the swelling edge 24a of the swelling shielding portion 24 of the second link 7
Is polymerized on the side of the edge 7b. And this bulging edge 24a
And the relief edge 23b of the shielding edge 23 and the edge 7b of the second link 7
The gap t'2 formed between the first cover member 22 and the second cover member 25 is shielded by the shield edge 26 of the second cover member 25, and further shielded by the third cover member 28. Second cover member 25 and third cover member 28
Is completely shielded. When the operating cylinder 19 is further shortened and the oscillating arm 10 is oscillated, the platform 16 contacts the ground F. At this time, the first cover member 22 and the second cover member 25 move in sliding contact. When the platform 16 is in contact with the ground F, as shown in FIG.
Positioned outside the vehicle from the shaft pin 9a of the link 6, the first
The gap t3 between the link 6 and the second link 7 is smaller than the maximum gap t2 in the swinging process. This platform 1
In the state of FIG. 4 in which the ground 6 is in contact with the ground F, a part of the bulging shielding portion 24 of the first cover member 22 attached to the first link 6 overlaps with the second link 7 on the tip end side of the gap t3. Thus, a part of the gap t3 is shielded. Further, a gap t ′ 3 formed by the shielding edge 23 of the first cover member 22, the edge 7 a of the second link 7, and the edge 11 a of the inclined arm 11 of the swing arm 10 is attached to the second link 7. The escape recess 26a of the shielding edge 26 of the second cover member 25 shields the interval t'3 while being positioned around the shaft pin 9a of the first link 6, and is further shielded by the third cover member 28. Also,
When the operating cylinder 19 is extended and the lift is retracted and stored, the reverse process is followed. As described above, when the platform 16 is moved up and down between the retracted position and the ground contact position via the swing arm 10 by the operating cylinders 19 of the left and right four-bar linkages 2, the first link of the four-bar linkage 2 is used. The gap t between the first link 6 and the second link 7 changes as t1 t2 t3 t2 t1. With this change, the first cover member 2 attached to the first link 6, the second link 7, and the swing arm 10
2, the second cover member 25 and the third cover member 28 follow the change of the gap t and move slidably while keeping a state in which the front end side, which is a dangerous area of the gap t, is shielded. It is possible to prevent the occupant sitting on the luggage or the wheelchair positioned above from being trapped in the gap t, thereby ensuring safety. Also, the first cover member 22,
Since the distal end side of the gap t can be shielded in the entire area of the ascending and descending process with a simple shape configuration divided into three members of the second cover member 25 and the third cover member 28, it is adopted in the four-bar linkage mechanism of the existing vehicle lift 1. There are advantages that can be achieved. Note that the first cover member 22 and the second
The shapes of the cover member 25 and the third cover member 28 are not limited to the above shapes, but are determined by the configuration of the four-bar linkage and the shape of the entire range of the change in the gap t.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a vehicle lift. FIG. 2 is a side view of the tip end side of the four-bar linkage at the rising end of the vehicle lift. FIG. 3 is a side view of the distal end side of the four-bar linkage while the vehicle lift is being lifted and lowered. FIG. 4 is a side view of the distal end side of the four-bar linkage at the lower end of the vehicle lift. FIG. 5 is a side view of a conventional vehicle lift. DESCRIPTION OF SYMBOLS 1 Vehicle lift 2 Four-bar link mechanism 6 First link 7 Second link 10 Swing arm 11 Inclined arm 16 Platform 21 Cover member 22 First cover member 23 Shielding rim 24 Swelling shield 25 Second cover Member 26 shielding edge 28 third cover member 29 side plate 31 shielding portion t, t1, t2, t3 gap

────────────────────────────────────────────────── (5) References JP-A-4-321446 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60P 1/44 B60P 3/00

Claims (1)

(57) to the Claims 1] opening that is opened in the vehicle body, shaken storage position the platform shaken outwardly and to move up and down to the ground position than the <br/> opening four-link mechanism which forms a lateral pair of an arm is provided to the first link and the front end side and tilting arms of the shaken arm of the second link of the four-bar linkage mechanism, it said across the lifting process of the platform following the movement of the second link and the first link, the first link and the leading-side gap of the second link includes a shieldable cover member, the cover member is attached to said first link 1
A cover member, and a second cover member attached to the second link, mounted on tilting arm of the shaken arm
Had 3 members of the third cover member, said the first cover member and the second cover member oriented in the gap, and the mutual shielding portion which polymerize sliding contact shape is formed in the third cover member is attached to the coronary distally of the second cover member and the first cover member, a configuration having a left and right side plates to shield the distal end side clearance of the first link, the second link and the inclined arm and to lift the vehicle.