FI82645B - Lifting device for wheelchairs and equivalent, especially for taxis for the disabled - Google Patents

Description

1 82645

Lifting device for wheelchairs and the like, especially for the disabled. - Lyftanordning för rulIstolar och motsvarande, särskilt för invataxibilar.

The invention relates to a lifting device for wheelchairs and the like, as set out in the preamble of claim 1, in particular for wheelchairs and the like.

The problem of lifting wheelchairs into different vehicles has been solved in the prior art by many different lifting devices. One such prior art solution is disclosed in European patent no. 119914, in which the device uses two cylinders as well as various articulating members. The object of the invention is to provide a simpler device in which only one cylinder is required. To achieve this object, the device according to the invention is characterized by the features set forth in the characterizing part of claim 1.

The invention is described below with reference to the accompanying drawings, in which:

Figure 1 shows a side view of the device according to the invention in its raised and lowered positions, Figures 2a and 2b show on an enlarged scale a detail of the device according to Figure 1.

According to Fig. 1, the lifting device comprises a frame 1 pivotally mounted on a base boom 2. A lifting boom 3 is pivotally mounted on the base boom 2, at the lower end of which a lifting platform 7 is pivotally mounted at a hinge point 12. The end protruding from the hinge point 12 9, preferably with a rotatably mounted guide roller.

The lifting boom 3 and the body 1 are connected to each other by a pivotally mounted parallel lever 4. The body 1 is further provided with 2 82645 pivotally mounted cylinders 5, the axially movable piston rod 6 of which is pivotally connected to the base boom 2. above the floor level of the vehicle, a guide curve 8 is fixed, by welding with a suitable seat, the guide surface 8a of which extends substantially transversely to the path of movement of the articulation point 12, preferably obliquely downwards in its position of use. The guide curve 8 can furthermore be provided with a tip 11, in the area of which the guide surface 8a is substantially parallel to the free path of the guide roller 9. The guide surface 8a terminates in a circular or oval cavity 8b.

When starting to lift the lifting boom 3 from the lower position upwards, the lifting platform 7 pivotally mounted on it initially remains in a horizontal position, whereby the articulation point 12 and the guide roller 9 move upwards along curved paths so that the horizontal distance between them remains constant. When the guide roller 9 encounters the guide surface 8a of the guide curve 8, the lifting plane 7 being at the height of the most suitable base plane 10, the direction of movement of the guide roller 9 changes downwards obliquely, transversely to the trajectory of the hinge point 12. This change in the direction of movement of the guide roller 9 causes the lifting plane 7 to turn towards a vertical position. When the lifting boom 3 is lowered, the guide surface 8a of the guide curve 8 together with the guide roller 9 causes the lifting plane to turn horizontally at the height of the most suitable base plane 10.

The above embodiment is only an example of a preferred embodiment of the invention and is not intended to limit the scope of the following claims. The control curve can be structurally implemented in a number of other ways that will be apparent to one skilled in the art.

Il

Claims (2)

1. Lifting device for wheelchairs and the like, in particular for invataxis and similar vehicles, to which a device (1), a base (1) pivotally stored (2), a pivotal (3) pivotally stored in the base (2) belong , a lifting bar (3) and the body (1) connecting pivotally mounted parallel rocker (4), a pivotally stored cylinder (5), the piston rods movable in axial direction are rotatably mounted connected to the base (2) and a the lower end of the lifting boom (3) is pivotally mounted in a lifting plane (7) stored in a joint point (12), which device is furthermore provided with a control curve (8), whose guide surface (8a) is substantially transverse to the path of movement, while the lifting plane ( 7) provided from the articulation point (12) in the direction towards the body projecting end with a guide means (9), characterized in that the guide surface (8a) of the guide curve (8) runs obliquely downwards in its working position, that the lifting plane (7) in its horizontal direction, raised upright, r the guide member (9) and the guide point (12) move along curved paths (14, 13) until the guide member (9) reaches the guide surface (8a) of the guide curve (8), interrupting the curved path (14) of the guide member (9) and the control member (9). ) begins to move along the guide surface (8a), while the articulation point (12) continues its curved path (13), the lifting plane (7) pivoting to the vertical position around the articulation point (12). Lifting device according to claim 1, characterized in that the guide curve (8) away from the end (1) of the body (1) is provided with a tip (11), at which the guide surface (8a) lies substantially in the direction of the free movement path of the control means (9). Il