DE202018102160U1 - Sofa, which can also serve as a bed - Google Patents

Abstract

Sofa that can also serve as a bed, comprising a backrest and a seat body, characterized in that the seat body comprises a rear seat and a front seat, wherein the front seat is located below the rear seat and extendable forward relative to the rear seat is, wherein the backrest is rotatably disposed at the rear end of the rear seat.

Description

Technical area

The present invention relates to a sofa, in particular a sofa that can serve as a bed after unfolding.

State of the art

Sofa and bed are commonplace furniture, and common sofas and beds have a fixed structure, so folding and switching of the condition of use is not possible. Foldable sofa beds have been invented to facilitate transportation and improve operability. For example, the Chinese patent CN2638546Y discloses a retractable sofa bed comprising a sofa head, a hinge, a hook, an iron wire, a spring and a bed body, wherein the rear end of the bed body via a rivet connection to one side of the hinge, the front portion of the foot part via a rivet connection to the the other side of the hinge and the rear portion of the foot part is connected via a rivet connection to a tail end of the hook.

However, existing folding sofa beds have disadvantages such as e.g. complicated construction, complex operation, lack of rigidity and stability as well as limited service life.

Content of the invention

The present invention is based on the object, in view of the prior art, a user-friendly sofa with a simple structure and good stability, which can also serve as a bed.

According to the invention the object is achieved by a sofa, which can also serve as a bed, comprising a backrest and a seat body, characterized in that the seat body comprises a rear seat and a front seat, which front seat is located below the rear seat and relative to the rear seat is extended to the front, wherein the backrest is rotatably disposed at the rear end of the rear seat.

It is further provided that at the rear end of the backrest, a support leg provided folded and an armrest is provided on both sides of the seat body.

It is further provided that on one side of at least one of the armrests, a side table is provided which can be folded into the armrest.

The upper end of the side table is hinged to one side of the upper end of the armrest, and to the middle rear is connected a retractable support mechanism whose other end is connected to the middle portion of the lower end of the armrest.

• - ein erstes Rohrteil, dessen oberes Ende an die mittlere Rückseite des Beistelltisches angelenkt ist und dessen unteres Ende in radialer Richtung eine Durchgangsbohrung aufweist, und
• - ein zweites Rohrteil, das in dem ersten Rohrteil eingeklappt ist, wobei an dem oberen Ende eine Ausbuchtung federnd angeordnet ist, die mit der Durchgangsbohrung zusammenwirkt, um den Beistelltisch abzustützen, wobei das untere Ende an den mittleren Bereich des unteren Endes der Armlehne angelenkt ist.

Preferably, the support mechanism comprises:

• a first pipe part whose upper end is articulated to the central rear side of the side table and whose lower end has a through-hole in the radial direction, and
• a second tubular member folded in the first tubular member, having at its upper end a bulge resiliently cooperating with the through-bore to support the side table, the lower end being hinged to the central region of the lower end of the armrest ,

The folding and positioning between the rear seat and the front seat are made possible by the following structure:

At the front end of the lowermost portion of the rear seat is a crossbar, and accordingly at the lowermost portion of the front seat there is provided an abutment plate which cooperates with the crossbar to restrict further inward movement of the front seat. At the center of the lowermost portion of the rear seat, a stop block is provided which limits further movement of the front seat to the outside.

• - eine Ratsche, die an dem vorderen Ende der Rückenlehne angeordnet ist und an ihrem Außenumfang Ratschenzähne aufweist, wobei an ihren beiden Seiten jeweils ein erster Schubabschnitt bzw. ein zweiter Schubabschnitt ausgeformt sind,
• - einen Klinkenträger, der an dem hinteren Ende des hinteren Sitzes angeordnet ist,
• - eine Klinke, die innerhalb eines bestimmten Winkels drehbar an einem Ende des Klinkenträgers angeordnet ist und zum Positionieren der Ratschenzähne an der Ratsche dient,
• - einen Nocken, der einen ersten Aufnahmeabschnitt sowie einen zweiten Aufnahmeabschnitt, die durch den ersten Schubabschnitt bzw. den zweiten Schubabschnitt beidseitig geschoben werden, um eine Drehung des Nockens zu bewirken, einen Andruckabschnitt, der nach einer Drehung die Klinke nach unten drückt, um die Ratschenzähne hindurchzulassen, und eine Nockennut zum Positionieren der Klinke aufweist, welche Nockennut zwischen dem Aufnahmeabschnitt und dem Andruckabschnitt ausgeformt ist, wobei der Nocken über einen Stift an einem Ende der Ratsche angeordnet ist, und
• - eine Drehfeder, die der Klinke einer Rückstellkraft bereitstellt. Ferner ist vorgesehen, dass die Drehfeder auf einer kurzen Welle aufgeschoben ist, die an der Klinkenträger angeordnet ist, wobei die Drehfeder mit einem Ende an der Klinke und mit dem anderen Ende an der Innenwand des Klinkenträgers anliegt.

The adjustment structure for the backrest and the rear seat is preferably configured such that the backrest is rotatably arranged via a ratchet-type hinge mechanism at the rear end of the rear seat, wherein the ratchet-type hinge mechanism comprises:

• a ratchet, which is arranged at the front end of the backrest and has ratchet teeth on its outer circumference, a respective first push section or a second push section being formed on each of its two sides,
• a pawl carrier located at the rear end of the rear seat,
• a pawl which is rotatably disposed at one end of the pawl carrier within a certain angle and serves to position the ratchet teeth on the ratchet,
• a cam having a first receiving portion and a second receiving portion, which are pushed on both sides by the first thrust portion and the second thrust portion, respectively, to effect rotation of the cam, a pressing portion which, after rotation, pushes down the pawl to pass the ratchet teeth, and has a cam groove for positioning the pawl Cam groove between the receiving portion and the pressing portion is formed, wherein the cam is arranged via a pin at one end of the ratchet, and
• - A torsion spring, which provides the pawl of a restoring force. It is further provided that the torsion spring is pushed onto a short shaft which is arranged on the pawl carrier, wherein the torsion spring rests with one end on the pawl and with the other end on the inner wall of the pawl carrier.

Compared to the prior art, the present invention advantageously characterized by the fact that a switch between three states, ie a sofa, a bed and a folded state as needed comfortably made possible while a simple structure and good stability can be achieved, moreover the ratchet-type hinge mechanism allows for multi-stage adjustment and accurate and reliable positioning, and in operation, only the ratchet needs to be operated, providing for convenient and convenient use.

list of figures

• 1 den Gegenstand nach einem Ausführungsbeispiel der vorliegenden Erfindung bei der Verwendung als Sofa,
• 2 den Gegenstand nach 1 mit einem Rahmen in einer schematischen strukturellen Darstellung,
• 3 den Gegenstand nach einem Ausführungsbeispiel der vorliegenden Erfindung bei der Verwendung als Bett in einer schematischen strukturellen Darstellung,
• 4 den Gegenstand nach einem Ausführungsbeispiel der vorliegenden Erfindung in einem eingeklappten Zustand in einer schematischen strukturellen Darstellung,
• 5 einen ratschenartigen Scharniermechanismus bei einem in 4 dargestellten Zustand nach einem Ausführungsbeispiel der vorliegenden Erfindung in einer vergrößerten schematischen strukturellen Darstellung,
• 6 einen ratschenartigen Scharniermechanismus bei einem in 3 dargestellten Zustand nach einem Ausführungsbeispiel der vorliegenden Erfindung in einer vergrößerten schematischen strukturellen Darstellung,
• 7 einen ratschenartigen Scharniermechanismus bei einem in 2 dargestellten Zustand nach einem Ausführungsbeispiel der vorliegenden Erfindung in einer vergrößerten schematischen strukturellen Darstellung,
• 8 einen Stützmechanismus in 2 in einer vergrößerten schematischen strukturellen Darstellung.

Show it

• 1 the article according to an embodiment of the present invention when used as a sofa,
• 2 the object after 1 with a frame in a schematic structural representation,
• 3 the article according to an embodiment of the present invention when used as a bed in a schematic structural representation,
• 4 the article according to an embodiment of the present invention in a folded state in a schematic structural representation,
• 5 a ratchet-type hinge mechanism in an in 4 illustrated state of an embodiment of the present invention in an enlarged schematic structural representation,
• 6 a ratchet-type hinge mechanism in an in 3 illustrated state of an embodiment of the present invention in an enlarged schematic structural representation,
• 7 a ratchet-type hinge mechanism in an in 2 illustrated state of an embodiment of the present invention in an enlarged schematic structural representation,
• 8th a support mechanism in 2 in an enlarged schematic structural representation.

Detailed embodiments

The present invention will be explained in more detail below on the basis of a concrete exemplary embodiment with reference to an enclosed drawing.

How out 1 to 4 it can be seen, comprises the sofa, which can also serve as a bed, according to the present invention, a backrest 1 , a rear seat 5 and a front seat 6 .
the front seat 6 below the rear seat 5 located and relative to the rear seat 5 extendable to the front, with the backrest 1 via a ratchet-type hinge mechanism 7 rotatable at the rear end of the rear seat 5 is arranged, wherein at the rear end of the backrest 1 a support foot 11 Folded provided and on both sides of the rear seat 5 one armrest each 2 is provided, each of the armrests 2 one side table each 3 is provided, which can be folded into the armrest. In the present embodiment, the backrest 1 , the rear seat 5 and the front seat 6 each of an inner frame and the frame from the outside enveloping rattan.

The top of the side table 3 is on one side of the upper end of the armrest 2 hinged and to the middle back is a retractable support mechanism 4 connected, the other end to the middle area of the lower end of the armrest 2 connected.

As it turned out 8th results, includes the support mechanism 4 a first pipe part 41 and a second pipe part 42 , wherein the upper end of the first pipe part 41 to the middle back of the side table 3 is hinged and the lower end in the radial direction has a through hole, and wherein the second pipe part 42 in the first pipe part 41 is folded, with a bulge at the top 43 is resiliently arranged, which cooperates with the through hole to support the side table, wherein the lower end to the central region of the lower end of the armrest 2 is articulated. At the upper end of the second pipe part 42 is a spring 44 provided to the one end on the inner wall of the second pipe part 42 and at the other end on the inside of the bulge 43 is applied. When pressing the bulge 43 and with simultaneous movement of the first pipe part 41 downstairs can be the side table 3 be folded, in reverse case, the side table can be folded out. Concrete structure of the support foot 11 can be based on the design of the support mechanism 4 be provided.

The folding and positioning between the rear seat 5 and the front seat 6 are made possible by the following structure: at the front end of the lowermost region of the rear seat 5 is a crossbar 52 and accordingly, at the bottom of the front seat 6 a stop plate 61 provided with the crossbar 52 cooperates to further movement of the front seat 6 restrict to the inside, being at the center of the lowest area of the rear seat 5 a stop block 51 is provided, which further movement of the front seat 6 restricted to the outside.

How out 5 can be seen, includes the ratchet-type hinge mechanism 7 a ratchet 8, a latch carrier 9 , a latch 93 , a cam 5a and a torsion spring 92 where the ratchet 8th at the front end of the backrest 1 is arranged and ratchet teeth on its outer periphery 83 having, on its two sides in each case a first thrust section 81 or a second push section 82 are formed, wherein the latch carrier 9 at the rear end of the rear seat 5 is arranged, and wherein the pawl 93 rotatable at one end of the pawl carrier within a certain angle 9 is arranged and for positioning the ratchet teeth 83 at the ratchet 8th serves.

The cam 5a has a first receiving section 3a and a second receiving portion 4a formed by the first pushing portion 81 or the second push section 82 be pushed on both sides to a rotation of the cam 5a to effect a Andruckabschnitt 4a , which after turning the latch 93 pushes down to the ratchet teeth 83 let through, and a cam groove 2a for positioning the latch 93 on which cam groove 2a between the receiving section 3a and the pressure section 1a is formed, wherein the cam 5a over a pen 4 at one end of the ratchet 8th is arranged, wherein the torsion spring 92 the latch 93 Provides a restoring force and on a short shaft 91 is postponed, the at the latch carrier 9 is arranged, and wherein the torsion spring 92 with one end on the latch 93 and with the other end on the inner wall of the pawl carrier 9 is applied.

How out 5 it can be seen, are the backrest 1 and the rear seat 5 in a folded state, so that's the ratchet 8th and the latch carrier 9 are in a relatively collapsed state, wherein when turning the ratchet 8th the first push section 81 the first receiving section 3a of the cam pushes and thus the ratchet 8th together with the cam 5a around the pen 84 rotates, at the same time the Andruckabschnitt 1a of the cam one end of the latch 93 pushes down so that the inside of the Andruckabschnitts 1a ratchet teeth 83 the location of the latch 93 can drive through until the end of the latch 93 within the cam groove 2a located and at the first push section 81 is present, as is 6 shows, in which case a use as a bed is conceivable. To switch to a sofa state, the ratchet 8th turned in the opposite direction, like out 7 can be seen, so the pawl 93 in the ratchet 83 is positioned, with further rotation of the ratchet 8th the second push section 82 the ratchet the second receiving section 4a pushes the cam until it turns into an in 5 shown position moves.

The present invention relates to a sofa which can also serve as a bed. Such a sofa comprises a backrest and a seat body, wherein the seat body comprises a rear seat and a front seat, which front seat is located below the rear seat and is extendable forward relative to the rear seat, the backrest rotatably on the rear End of the rear seat is arranged. Compared to the prior art, the present invention advantageously characterized by the fact that a switch between three states, ie a sofa, a bed and a folded state as needed comfortably made possible while a simple structure and good stability can be achieved.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• CN 2638546 Y [0002]

Claims (10)

Sofa, which can also serve as a bed, comprising a backrest and a seat body, characterized in that the seat body comprises a rear seat and a front seat, wherein the front seat is located below the rear seat and extendable forward relative to the rear seat is, wherein the backrest is rotatably disposed at the rear end of the rear seat. Sofa after Claim 1 , characterized in that at the rear end of the backrest, a support foot is provided folded. Sofa after Claim 1 or 2 , characterized in that in each case an armrest is provided on both sides of the seat body. Sofa after Claim 3 , characterized in that on one side of at least one of the armrests, a side table is provided, which can be folded into the armrest. Sofa after Claim 4 , characterized in that the upper end of the side table is hinged to one side of the upper end of the armrest and connected to the central rear side a retractable support mechanism whose other end is connected to the central region of the lower end of the armrest. Sofa after one of the Claims 1 to 5 characterized in that the support mechanism comprises: - a first pipe part whose upper end is hinged to the central rear side of the side table and whose lower end has a through hole in the radial direction, and - a second pipe part which is folded in the first pipe part , wherein at the upper end a bulge is resiliently arranged, which cooperates with the through hole to support the side table, wherein the lower end is hinged to the central region of the lower end of the armrest. Sofa after one of the Claims 1 to 6 characterized in that at the front end of the lowermost region of the rear seat there is provided a crossbar and, correspondingly at the lowermost region of the front seat, a stopper plate cooperating with the crossbar to restrict further inward movement of the front seat. Sofa after one of the Claims 1 to 7 , characterized in that at the center of the lowermost portion of the rear seat, a stop block is provided, which limits a further movement of the front seat to the outside. Sofa after one of the Claims 1 to 8th characterized in that the backrest is rotatably arranged via a ratchet-type hinge mechanism at the rear end of the rear seat, the ratchet-type hinge mechanism comprising: a ratchet arranged at the front end of the backrest and having ratchet teeth on its outer periphery a first push portion or a second push portion are formed on both sides thereof, a pawl carrier which is arranged at the rear end of the rear seat, a pawl, which is arranged rotatably within a certain angle at one end of the pawl carrier and the Positioning of the ratchet teeth on the ratchet is to provide a cam having a first receiving portion and a second receiving portion pushed on both sides by the first pushing portion and the second pushing portion, respectively, to cause rotation of the cam di e pawl presses down to pass the ratchet teeth and has a cam groove for positioning the pawl, which cam groove is formed between the receiving portion and the pressing portion, the cam being disposed at one end of the ratchet via a pin, and a torsion spring, which provides the pawl of a restoring force. Sofa after Claim 9 , characterized in that the torsion spring is pushed onto a short shaft which is arranged on the pawl carrier, wherein the torsion spring rests with one end on the pawl and with the other end on the inner wall of the pawl carrier.

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