Beds – Sofa bed – Reverting back
Patent
1989-12-12
1991-12-31
Smith, Gary I.
Beds
Sofa bed
Reverting back
A61G 705
Patent
active
050759116
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present innovation is directed to an adjusting device for a lattice plate of a bed equipped with at least a swivelable back part and a swivelable foot part. The back part and the foot part are adjustable by an electric-motor adjusting drives each having an adjusting spindle and an adjusting nut screwed on to the spindle.
A lattice plate, known in general, usually comprises a foot part, a back part and possibly also a head part which are swivelable, respectively, around a horizontal axle for the purpose of adjusting to the desired reclining position. The previously known adjusting devices comprise a plurality of electric-motor adjusting drives whose piece numbers agree with the number of parts to be adjusted. Thus, an individual drive is assigned to the back part, to the foot part and possibly also to the head part, respectively.
This construction, known per se, has the disadvantage that every individual adjusting drive must be mounted separately, so that fastening parts are necessary for every adjusting drive. The previously known adjusting device is therefore not only costly with respect to construction, but also requires a considerable assembly cost on the part of the producer of the lattice plate and bed. Moreover, handling is quite uncomfortable for the user, since the individual adjusting drives can only be actuated independently of one another. For example three switches must be actuated in order to bring the back part, foot part and head part from an angular position into a horizontal position corresponding to the sleeping position. Moreover, another disadvantage in the previously known construction is that the frame and the fastening parts are extremely heavily loaded, since the flow of force is effected via the frame and the fastening parts.
SUMMARY OF THE INVENTION
The present invention has the object of developing an adjusting device which is constructed in a simple manner so as to be compact, is simple to mount both for the producer of the adjusting device and for the producer of the lattice plate without additional cable installation and wiring work and without the need for additional fastening parts included as loose parts, and is also simple to handle for the user.
In order to meet this object, it is provided, according to the innovation, that at least the adjusting drives are arranged in a box-like housing, the adjusting spindles are located opposite to one another, guides are provided in the housing for the adjusting nuts which are screwed on the adjusting spindles, catch means for fastening the adjusting drives are provided at least at the inner surfaces of the side walls of the housing, and the adjusting drives are actuable simultaneously or independently from one another by means of a joint control unit.
The adjusting drives are known linear drives. Since they are now arranged in a box-like housing, a constructional unit is formed which is easy for the producer of the lattice plate to install. Since the adjusting nuts screwed on the adjusting spindles are supported in guides in the operating state, the parts which would otherwise be necessary for preventing a rotation of the nut are dispensed with. Moreover, the fastening parts or fittings are loaded only to an extremely slight degree, since the flow of force is effected exclusively through the housing. This results in a considerable stabilization of the frame of the lattice plate. Since all adjusting drives can be actuated simultaneously as well as independently of one another by means of a joint control unit, a lattice plate can be brought into a sleeping position, e.g. from a reading position, in an extremely comfortable manner. In order to increase the stiffening and twisting strength, it is advisable that the housing comprise longitudinal and/or transverse stiffening ribs. Since the housing is loaded most intensively in the area of the receptacles for fittings, the housing is advantageously constructed so as to have a double wall in this area and/or is provided with reinforcements. However, the g
REFERENCES:
patent: 3129607 (1964-04-01), Schaefer
patent: 3921230 (1975-11-01), Hanning et al.
patent: 4120057 (1978-10-01), Neumann
patent: 4271545 (1981-06-01), Christian, III
patent: 4381571 (1983-05-01), Elliott
patent: 4685159 (1987-08-01), Oetiker
Milano Michael J.
Smith Gary I.
Striker Michael J.
LandOfFree
Adjusting device for a lattice plate equipped with at least a ti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjusting device for a lattice plate equipped with at least a ti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjusting device for a lattice plate equipped with at least a ti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1499522