DE3135323C2 - Sofa bed - Google Patents

Description

2. Apparatus according to claim 1, characterized in that the mattress foot part (8) on the frame frame (4) can be pivoted out to the front and that the mattress middle part (7) on the mattress base part (8) can be folded back on the frame (4)

3. Apparatus according to claim 1, with forward foldable mattress foot part, characterized in that the mattress middle part (7) on Rack frame (4) can be pivoted out to the rear

The invention relates to a device on a convertible sofa into a bed, which in the preamble of Claim 1 specified genus.

In a sofa bed of the above-described type known from German Offenlegungsschrift 00 957, from which the invention is based, the sofa seat with firmly attached upholstery is hinged upwardly from the seat position by means of two four-link chains held on the sofa frame side cheeks, and the two, Mattress parts with firmly attached cushions can only be swiveled out of the frame frame pulled forward after the sofa seat has been swiveled up.

That sofa bed known from the aforementioned German Offenlegungsschrift is, however, both in terms of the manufacture and assembly as well as the handling for converting the sofa bed

relatively complex

Furthermore, from DE-OS 29 40 725 a sofa bed with cushions loosely placed on the mattress parts is known, in which, to pull out the unpadded, superposed mattress parts receiving the frame, this is connected to the sofa frame by means of telescopic rod guides of the frame larger than the sofa frame depth.

Here, however, the cushions must be in the lying position of the sofa before the frame is pushed in stacked under the seat part that remained on the sofa frame and hinged on the back of the sofa frame or in the lying position of the sofa on the mattress parts that have been lined up one behind the other, This results in an even more complex handling than the well-known sofa bed described above

In addition, the sofa bed according to DE-OS 29 40 725 is not for cushions firmly attached to the mattress parts applicable, because in that case a normal cushion thickness of 10 cm, for example, is too large Seat height would result.

The object of the invention is to provide a device as described in the preamble of claim 1 specified type to the extent that while maintaining the state of the art already achieved advantage, which can be seen in the fact that the Cushions of normal thickness are firmly attached to the mattress parts without the normal in the sitting position Seat height is exceeded, in addition, a simplification of the device and its handling is achievable, which also results in a simpler and cheaper production

The solution to this problem is characterized in that

g) the sofa seat (3) is secured to the frame, h) telescopic rod guides (5) for the mattress parts (7, 8) carrying

Frame frames (4) are provided, i) whose adjustment stroke is greater than the sofa frame depth is

There is no independent protection for the features "h" and "i", but only in connection with the others Features of claim 1 claimed.

An advantageous embodiment of the above-described subject is characterized in that so that the mattress foot part on the frame frame can be pivoted out to the front and that the mattress middle part on the mattress foot part can be folded backwards. A variant, which may be preferred under certain circumstances, has a mattress base that can be folded forward characterized in that the mattress middle part is hinged to the frame so that it can be pivoted out to the rear.

Compared to the prior art, this eliminates the need for the relatively complex and expensive four-link chains for articulating the sofa seat to the sofa frame. In addition, the sofa bed can be easily converted without the sofa seat having to be swiveled. Two embodiments of the invention are described in the following description in connection with the Drawings described. The drawings show in 1 shows a sofa bed partially broken open in side view, specifically in the sitting position,

F i g. 2 to 4 the same in mutually different transformation phases,

F i g. 5 another embodiment in the sitting position seen from the side,

F i g, 6 to 8 likewise in mutually different conversion phases.

This sofa bed consists of two side panels that are braced together Frame 1 with an upholstered backrest 2 and an upholstered sofa seat 3, both with the Frame 1 are rigidly connected.

In the sofa frame 1, under the sofa seat 3, there is a frame frame that can be pulled out to the front like a drawer to a limited extent 4 arranged, of two telescopic rod guides 5 each fixed to the frame in a straight line Is guided On the frame 4 unrollable rollers 6 are arranged on the floor.

Under certain circumstances, skids can also be provided instead of the rollers 6.

A two-part mattress is arranged in the frame 4

- Both mattresses parts 7 and 8 each have about the same width and approximately the same length as the sofa seat 3 and complement each other with the inclusion of the Sofa seat 3 (Fig. 4 and 8) to a bed length Lying area.

In the F i g. 1 to 4 is the mattress foot part 8 by means two four-bar chains 9 in the frame frame 4 hinged up and forward pivotable and carries an adjustable footrest 10 on its underside.

The four-link chains 9 are assigned to springs It, which on the one hand the erection of the four-bar chains <* Support swinging and on the other hand the four-bar chains 9 can be overcome in their end positions hold tight.

The mattress middle part 7 is on the mattress base part 8 by means of two four-bar chains 12 to the rear

hinged in a foldable way, provided the frame frame 4 pulled out to the front and the mattress base 8 swiveled out of the frame 4 is

In the lying position (Fig. 4) the Mattress middle part 7 on the frame frame 4. In the case of the FIG. 5 to 8 illustrated embodiment is the mattress middle part 7 on the frame 4 pivoted up and back and the mattress foot part 8 is with the Mattress middle part 7 connected by means of four-bar chains 12 that the mattress foot part 8 forward can be folded down.

The maximum adjustment stroke is here , the frame frame 4 is set so that the sofa seat 3

2> Mattress parts adjusted at the same level with almost no play to the sofa seat 3.

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1, Device on a sofa that can be converted into a bed, with the following features: a) It is a two-piece, with the sofa-seat itself too Padded mattresses that complement a bed-length mattress, with both Mattresses each share about the same length ι ο and about the same width as the sofa seat exhibit, b) both mattress parts are arranged one on top of the other in a seat under the sofa arranged drawer-like frame, c) the frame, together with both mattress parts, is held on straight rod guides limited adjustable to the front, d) the lower mattress part is on the frame by means of two four-bar chains from the Frame frame lengthways next to the sofa seat and pivoted upwards at the same level as it, e) the upper part of the mattress is lengthways next to and level with the lower part of the mattress the latter hinged upwardly foldable and supportable, f) all joint axes are arranged parallel and horizontally directed to the longitudinal extension of the sofa, characterized in that g) the sofa seat (3) is secured to the frame, h) telescopic rod guides (5) for the mattress parts (7, 8) carrying Frame frames (4) are provided, i) whose adjustment stroke is greater than the sofa frame depth