Upholstered furniture with adjustable backrest and methods for its manufacture

Abstract

Upholstered furniture (1) with a seat cushion (2) providing a seating and / or lying surface (4) and with a backrest (3) adjustable relative to the seat cushion (2) from a rear position to a front position and back again, wherein the backrest (3) has a sword (6) extending through the seat cushion (2) during the adjustment of the backrest (3) from the rear position to the front position and back again, wherein the backrest (3) is screwed via the sword (6) to a slide (10) arranged below the seat cushion (2) and supporting the backrest (3), and wherein the slide (10) is slidably connected to a slide guide (12) for adjusting the backrest (3) from the rear position to the front position and back again, characterized in thatthat the sword (6) is fixed to the slide (10) by means of at least one screw connection provided below the seat cushion (2) and extending at least substantially perpendicular to the longitudinal extent of the sword (6) and / or at least substantially parallel to the seat and / or lying surface (4) of the seat cushion (2).

Description

[0001] The invention relates to upholstered furniture with a seat cushion providing a sitting and / or lying surface and with a backrest which can be adjusted relative to the seat cushion from a rear position to a front position and back again, wherein the backrest has a blade which extends through the seat cushion during the adjustment of the backrest from the rear position to the front position and back again, wherein the backrest is screwed via the blade to a slide which is arranged below the seat cushion and carries the backrest, and wherein the slide is connected to a slide guide so as to be displaceable for adjusting the backrest from the rear position to the front position and back.Furthermore, the invention relates to a method for producing an upholstered piece of furniture with a seat cushion providing a sitting and / or lying surface and with a backrest that can be adjusted relative to the seat cushion from a rear position to a front position and back again.

[0002] Upholstered furniture, which is preferably seating but can alternatively or additionally also be reclining furniture, often has a backrest against which the user can lean their back, or if necessary, their head or another body part. Since these features are usually designed for the user to lean their back against, these features will be referred to as backrests for clarity, even if their function is not necessarily limited to leaning the back.

[0003] To ensure that users of different heights can assume a comfortable position on the upholstered furniture, and to offer users a variety of comfortable positions for different purposes, such as reading, entertaining, eating, or watching television, the backrests of many upholstered furniture are adjustable. The adjustment can be performed in a variety of ways, but typically, viewed from one direction, adjustment can be viewed as moving from a rearward position to a forward position and back again. Therefore, adjusting the backrest from a rearward position to a forward position is not limited to a specific direction.In many cases, however, the backrest will be adjustable slightly more towards the front of the upholstered furniture and again slightly more towards the back of the upholstered furniture, which is why, for the sake of clarity, we will refer to an adjustment from a rear position to a front position and back, even if, for example, a more lateral adjustment or the like would be conceivable.

[0004] When using the upholstered furniture, the user sits and / or lies on a seating and / or lying surface provided by the upholstery. However, since the upholstered furniture is primarily a piece of seating furniture, even if this is not absolutely necessary, the seat cushion will be referred to as the seat cushion for clarity, even though the user can also or exclusively lie on this seat cushion. Given that the user of the upholstered furniture sits and / or lies on the seat cushion, the backrest is adjusted relative to this seat cushion.

[0005] The backrest is connected, in particular screwed, to a slide below the seat cushion. The slide is adjustable along a slide guide, so that by adjusting the slide along the slide guide, the backrest can be adjusted from the rear position to the front position and back again. To enable the backrest to be easily connected to the slide, which is arranged at least substantially below the seat cushion, the backrest has a blade that extends through a recess, in particular a slot, in the seat cushion through the seat cushion.

[0006] Due to the seat cushion and adjustable backrest, the assembly of conventional upholstered furniture, such as those known from EP 2 893 839 A1 or US 2015 / 0196122 A1, involves considerable effort. On the one hand, assembly must be reliable, and on the other, the passage of the blade through the seat cushion should be as invisible as possible to the user of the upholstered furniture.

[0007] Therefore, the object of the present invention is to design and further develop the upholstered furniture and the method of the type mentioned at the outset and described in more detail above in such a way that a simpler, faster and more cost-effective production of the upholstered furniture becomes possible.

[0008] This object is achieved in an upholstered furniture according to the preamble of claim 1 in that the sword is fixed to the carriage via at least one screw connection provided below the seat cushion and extending at least substantially perpendicular to the longitudinal extent of the sword and / or at least substantially parallel to the sitting and / or lying surface of the seat cushion.

[0009] The above object is further achieved according to claim 12 by a method for producing an upholstered furniture item with a seat cushion providing a sitting and / or lying surface and with a backrest adjustable relative to the seat cushion from a rear position to a front position and back again, in particular according to one of claims 1 to 11, - in which a blade of the backrest is inserted from top to bottom through a recess, in particular a slot, in the seat cushion and - in which the sword is screwed to a slide arranged beneath the seat cushion, supporting the backrest, and connected to a slide guide for adjusting the backrest between the rear position and the front position and back, via at least one screw connection extending at least substantially perpendicular to the longitudinal extent of the sword and / or at least substantially parallel to the sitting and / or lying surface of the seat cushion.

[0010] By screwing the sword underneath the seat cushion to the slide, which is also aligned in a suitable way, very good accessibility is achieved, so that the backrest can be joined to the slide very easily, quickly and cost-effectively. In this way, the slide can also be positioned very close underneath the seat cushion in a very space-saving manner. In addition, this makes it possible to use only a very narrow sword to connect the backrest to the slide, which can be easily and quickly passed through a small, barely visible recess in the seat cushion. It has proven to be very useful if the at least one screw connection extends at least essentially perpendicular to the longitudinal extent of the sword and at least essentially parallel to the sitting and / or lying surface of the seat cushion.The blade can thus be inserted from top to bottom through a recess, in particular a slot, in the seat cushion and then screwed to the slide below the seat cushion using at least one corresponding screw connection. The screw connection can thus be easily joined from the side relative to the blade. If the upholstered furniture is positioned horizontally, the screw connection can be joined very easily and quickly by screwing in an at least essentially horizontal direction.

[0011] For the sake of clarity and to avoid unnecessary repetition, the upholstered furniture and the method are described together below, without distinguishing between the upholstered furniture and the method in detail. However, the skilled person will be able to determine, based on the context, which features are particularly preferred with regard to the upholstered furniture and the method.

[0012] In a first particularly preferred embodiment of the upholstered furniture, the blade is secured to the carriage via at least two screw connections provided below the seat cushion. In this way, an even more stable and durable connection between the carriage and the blade can be achieved. It is also suitable if the at least two screw connections extend at least substantially perpendicular to the longitudinal extent of the carriage guide and / or at least substantially perpendicular to the longitudinal extent of the blade and / or at least substantially parallel to the sitting and / or lying surface of the seat cushion. In this way, the at least two screw connections are very easily accessible and can therefore be joined very quickly and easily.

[0013] If the sword extends through a slot in the seat cushion, the required recess in the seat cushion can be kept small and almost invisible. However, the slot preferably extends at least substantially along the slide guide, so that adjusting the backrest is easy and the associated design effort is kept to a minimum.

[0014] It is also particularly expedient for adjustment and the required design effort if the slot is arranged at least substantially vertically above the slide guide and / or if the slot extends parallel to the slide guide. For simplicity, the slot and the slide guide can extend at least substantially linearly. However, this is not absolutely necessary.

[0015] If the sword and the slide have a mutual stop independent of the at least one screw connection, the assembly of the backrest can be simplified. For example, the sword is pushed into the recess in the seat cushion until the sword and the slide come into contact with each other via the common stop. The assembler will be able to reliably determine this, which indicates to him that the sword is in a position in which the at least one screw connection can be joined to the slide. Precise positioning of the sword and the slide relative to each other is then very simple and reliable if the stop forms a positive connection between the sword and the slide at least substantially in the longitudinal direction of the sword downwards and / or at least substantially perpendicular to the sitting and / or lying surface downwards.For example, the sword can be pushed downwards through the seat cushion until this movement can no longer be carried out due to the form fit, since the contact surfaces of the slide and the sword lie against each other in the common stop.

[0016] It is particularly helpful for production if the stop ensures a positive connection between the blade and the slide at least substantially perpendicular to the longitudinal extension of the slide guide and / or at least substantially perpendicular to the longitudinal extension of the blade and / or at least substantially parallel to the seating and / or lying surface of the seat cushion. This allows for highly intuitive and therefore particularly reliable assembly.

[0017] To easily make the connection between the backrest and the carriage more stable and / or rigid, it is advisable to form the blade with at least two separate blade plates. This can also lead to weight and material savings. It is very practical, both functionally and structurally, if the blade plates are arranged at least essentially parallel to each other.

[0018] The backrest can be adjusted very reliably and, if necessary, continuously if the slide guide comprises at least two, in particular at least substantially parallel, guide rods. The forces required to adjust the slide can also be adjusted to prevent accidental adjustment of the backrest. This can be achieved in a particularly simple design by having the at least two guide rods extend at least partially through the slide, which is screwed to the backrest.

[0019] In order to achieve a very comfortable and, if necessary, stepless adjustment of the backrest, which cannot be done accidentally, it is advisable if the slide screwed to the backrest is connected to a motor drive for adjusting the backrest from the rear position to the front position and back.

[0020] It's particularly comfortable for the user if the backrest has a cushion. This also ensures that the recess in the seat cushion and the backrest's blade are as invisible as possible. This is especially true if the backrest rests on the seat or lying surface, at least in the rear and / or front positions.

[0021] In a first particularly preferred embodiment of the method, the blade is inserted through the recess or slot of the seat cushion before being screwed to the slide until a common stop between the blade and the slide holds the blade positively to the slide in a downward direction and / or on at least one side. The blade can then be reliably screwed to the slide.

[0022] The invention is explained in more detail below with reference to a drawing which merely represents an exemplary embodiment. Fig. 1A-B a detail of an upholstered furniture according to the invention with a backrest in a front position and a rear position in a sectional view, Fig. 2 another detail of the upholstered furniture from Fig. 1 in a perspective view and Fig. 3A-C the detail from Fig. 2 in three different positions during the assembly of the upholstered furniture in a perspective view.

[0023] In the Fig. 1A-B shows an upholstered furniture item 1 with a seat cushion 2 and a backrest 3. The seat cushion 2 defines a seat surface 4, the usable part of which is limited to the rear by the backrest 3. The backrest 3 can be adjusted to vary the usable section of the seat surface 4 between a Fig. 1A dashed and the Fig. 1B with solid lines shown rear position into a position shown in the Fig. 1A with solid lines and in the Fig. 1B and back again. The illustrated and preferred backrest 3 has a back cushion 5 resting on the seat cushion 2. The part of the backrest 3 resting on the seat cushion 2, or the back cushion 5, is connected to a blade 6 of the backrest 3 arranged at least partially beneath the back cushion 5, which blade 6 in the illustrated and preferred upholstered furniture 1 is formed from two separate, at least substantially parallel blade tabs 7, 8.

[0024] The blade 6 of the backrest 3 is guided downwards through a slot 9 in the seat cushion 2, so that the lower end of the blade 6 projects downwards relative to the seat cushion 2 and is screwed to a carriage 10 in this area using two screws 11. The carriage 10 is carried by a carriage guide 12 comprising two guide rods 13, which are guided through the carriage 10 in sections. The carriage 10 is provided so as to be displaceable along the guide rods 13, wherein the displacement of the carriage 10 causes the backrest 3 to be adjusted from the rear position to the front position and back again. To adjust the backrest 3, the illustrated and in this respect preferred upholstered furniture 1 is provided with an electric motor drive 14 which is connected to the carriage 10 via a linear drive 15.The electric motor drive 14 allows the slide 10 to be continuously adjusted between the rear position and the front position and back again. Furthermore, the motor drive 14 holds the slide 10 in the respective position between the rear position and the front position of the backrest 3, thus preventing accidental adjustment of the backrest 3 toward the front position and / or the rear position.

[0025] As is also the case in the Fig. 2, the two screws 11 for screwing the blade 6 of the backrest 3 to the slide 10 extend below the seat cushion 2 and in a direction which is at least substantially perpendicular to the longitudinal extent of the slide guide 12 and / or at least substantially perpendicular to the longitudinal extent of the blade 6 and / or at least substantially parallel to the sitting and / or lying surface 4 of the seat cushion 2.

[0026] The assembly of the backrest 3 is shown schematically in the Fig. 3A-C, wherein the back cushion 5 and the seat cushion 2 of the upholstered furniture 1 have been omitted for the sake of clarity. The blade 6, to which the back cushion 5 (not shown) is connected, is connected to the back cushion 5 in the illustrated and in this respect preferred upholstered furniture 1 by four screw connections. The screws required for this purpose, also not shown, are guided through the upper openings 16 provided for this purpose in the blade 6. The blade 6 is first pushed downwards from above through the recess in the form of the slot 9 in the seat cushion 2. The blade 6 has a recess 17 at its lower end, which is particularly in the Fig. 3A and in which a bolt element 18 of the slide 10 can be at least partially received. In this case, the recess 17, which in the illustrated and thus preferred upholstered furniture 1 is provided in one of the two blade brackets 7, 8, and the bolt element 18 form corresponding stop surfaces and accordingly a common stop 19. If the blade 6 as in the Fig. 3B is pushed downwards through the slot 9 in the upholstered furniture 1 and, at least in the case of the upholstered furniture 1 shown and preferred in this respect, is inserted at least partially into the carriage 10, the bolt element 18 moves at least partially into the recess 17 of the sword 6 and the sword 6 comes into contact with the bolt element 18. As a result, a positive connection is formed which, in the case of the upholstered furniture 1 shown and preferred in this respect, not only limits further movement of the sword 6 downwards, but also in the two spatial directions perpendicular thereto. In this way, a position of the sword 6 can be very easily provided in which the sword 6 can be screwed to the carriage 10 from the side using the two screws 11. Two openings 20 are provided in the sword 6 or in the two sword tabs 7, 8 to accommodate the screws 11.After the sword 6 has been screwed to the carriage 10, the sword 6 is moved relative to the carriage 10 in the direction shown in the . Fig. 3C, in which the sword 6 and with it the backrest 3 can be moved along the slide guide 12. List of reference symbols: 1 upholstered furniture 2 seat cushions 3 backrest 4 Seat 5 back cushions 6 Sword 7.8 sword tab 9 slot 10 sleds 11 Screw 12 Slide guide 13 Command Staff 14 electric motor drive 15 Linear drive 16 Opening 17 Recess 18 Bolt element 19 stop 20 Opening

Claims

[1] Upholstered furniture (1) with a seat cushion (2) providing a sitting and / or lying surface (4) and with a backrest (3) that can be adjusted relative to the seat cushion (2) from a rear position to a front position and back again, wherein the backrest (3) has a blade (6) that extends through the seat cushion (2) during adjustment of the backrest (3) from the rear position to the front position and back again, wherein the backrest (3) is screwed via the blade (6) to a slide (10) arranged below the seat cushion (2) and supporting the backrest (3), and wherein the slide (10) is connected to a slide guide (12) for adjusting the backrest (3) from the rear position to the front position and back, characterized bythat the sword (6) is fixed to the carriage (10) via at least one screw connection provided below the seat cushion (2) and extending at least substantially perpendicular to the longitudinal extent of the sword (6) and / or at least substantially parallel to the sitting and / or lying surface (4) of the seat cushion (2). [2] Upholstered furniture according to claim 1, characterized by that the sword (6) is fixed to the carriage (10) via at least two screw connections provided below the seat cushion (2) and extending at least substantially perpendicular to the longitudinal extent of the carriage guide (12) and / or at least substantially perpendicular to the longitudinal extent of the sword (6) and / or at least substantially parallel to the sitting and / or lying surface (4) of the seat cushion (2). [3] Upholstered furniture according to claim 1 or 2, characterized bythat the sword (6) extends through a slot (9) arranged in the seat cushion (2) and that, preferably, the slot (9) extends at least substantially along the slide guide (12). [4] Upholstered furniture according to claim 3, characterized by that the slot (9) is arranged at least substantially vertically above the slide guide (12) and / or that the slot (9) extends parallel to the slide guide (12). [5] Upholstered furniture according to one of claims 1 to 4, characterized by that the sword (6) and the carriage (10) have a mutual stop (19) independently of the at least one screw connection and that, preferably, the stop (19) forms a positive connection of the sword (6) at least substantially in the longitudinal direction of the sword (6) downwards and / or at least substantially perpendicular to the sitting and / or lying surface downwards with the carriage (10). [6] Upholstered furniture according to claim 5, characterized by that the stop (19) forms a positive connection of the sword (6) with the slide (10) at least substantially perpendicular to the longitudinal extent of the slide guide (12) and / or at least substantially perpendicular to the longitudinal extent of the sword (6) and / or at least substantially parallel to the sitting and / or lying surface (4) of the seat cushion (2). [7] Upholstered furniture according to one of claims 1 to 6, characterized by that the sword (6) is formed from at least two separate sword tabs (7,8) and that, preferably, the sword tabs (7,8) are arranged parallel to one another. [8] Upholstered furniture according to one of claims 1 to 7, characterized by that the slide guide (12) comprises at least two, in particular at least substantially parallel, guide rods (13) and that, preferably, the at least two guide rods (13) extend at least partially through the slide (10) screwed to the backrest (3). [9] Upholstered furniture according to one of claims 1 to 8, characterized by that the slide (10) screwed to the backrest (3) is connected to a motor drive (14) for adjusting the backrest (3) from the rear position to the front position and back. [10] Upholstered furniture according to one of claims 1 to 9, characterized by that the backrest (3) has a back cushion (5). [11] Upholstered furniture according to one of claims 1 to 10, characterized by that the backrest (3) rests on the sitting or lying surface (4) at least in the rear position and / or the front position. [12] Method for producing an upholstered furniture item (1) with a seat cushion (2) providing a sitting and / or lying surface (4) and with a backrest (3) adjustable relative to the seat cushion (2) from a rear position to a front position and back again, in particular according to one of claims 1 to 11, - in which a blade (6) of the backrest (3) is inserted from top to bottom through a recess, in particular a slot, (9) of the seat cushion (2) and - in which the sword (6) is screwed to a slide (10) arranged beneath the seat cushion (2), supporting the backrest (3), and connected to a slide guide (12) for adjusting the backrest (3) from the rear position to the front position and back, via at least one screw connection extending at least substantially perpendicular to the longitudinal extent of the sword (6) and / or at least substantially parallel to the sitting and / or lying surface (4) of the seat cushion (2). [13] Method according to claim 12, in which the blade (6) is inserted through the recess, in particular the slot (9), of the seat cushion (2) before being screwed to the carriage (10) until a common stop (19) between the blade (6) and the carriage (10) holds the blade (6) in a downward direction and / or to at least one side in a form-fitting manner on the carriage (10).

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