EP3695751B1 - Seating - Google Patents

Description

The invention relates to a chair with a body having a top, a front and a back, a seat and a backrest, the body being open at the top, and in a closed state of the chair the seat is arranged in the body, the The backrest covers the top of the body, and in an open state of the chair, the seat at least partially covers the top of the body, the backrest being pivoted from the closed state.

Seating furniture is widespread on the market and is used indoors and outdoors in residential buildings as well as in restaurants and public buildings. Particularly when used outdoors, there is a need to store seating furniture in the event of bad weather or in the winter season protected from the weather in order to prevent damage and / or increased wear and tear on the seating furniture. The storage and retrieval of the seating furniture usually requires a greater amount of work, especially in the case of comfortable and therefore often heavy and large seating furniture.

Seating furniture is known in the prior art which counter this problem in that the seating furniture has a mechanism which allows a backrest and a seat to be folded into a body of the seating furniture. In this state, the body of the chair protects a front side of the backrest and the seat from the effects of the weather, with a rear side of the backrest closing off the interior of the body from the exterior. As a result, the backrest and the seat are protected from the weather, so that the seating furniture can remain outside even in bad weather, and labor-intensive storage of the seating furniture (s) can be dispensed with. When the chair is used again, the seat and the backrest are simply folded out again.

A foldable seating furniture according to the prior art is in US 2006/0284451 A1 disclosed.

The complex actuation mechanism of foldable seating furniture known in the prior art increases the susceptibility to errors and the production costs of such seating furniture. In addition, actuation mechanisms of this type are generally not designed to be very robust in order not to increase the weight of the chair beyond the dimensions and to save material costs. As a result, foldable seating furniture according to the prior art is generally not designed to be very robust, and is susceptible to mechanical damage.

The object of the present invention is to provide seating furniture which avoids the disadvantages of the prior art.

According to the invention, the present object is achieved in that the backrest is pivotably mounted on the body in the area of the rear, and the seating furniture comprises three pivoting levers, which are articulated to the seat at a first end at points spaced apart from one another, with a second end a first pivot lever in the area of the front, and a second end of a second pivot lever in the area of the rear is connected to the body, the first end of a third pivot lever between the first ends of the first pivot lever and the second pivot lever with the seat, and the second The end of the third pivot lever is connected to the backrest.

The seating furniture according to the invention is defined in claim 1 and comprises a body having a top side, a front side and a rear side, a seat and a backrest. The body is open at the top. In a closed state of the chair, the seat is arranged in the body, the backrest covering the top of the body. In an open state of the chair, the seat covers the upper side of the body at least partially, the backrest being pivoted from the closed state. The backrest is also pivotably mounted on the body in the area of the rear. The seating furniture comprises three pivot levers, each of which is articulated to the seat at a first end at points that are spaced apart from one another. A second end of a first pivot lever is in the area of the front, and a second end of a second pivot lever is connected to the body in the area of the rear. The first end of a third pivot lever is connected to the seat between the first ends of the first pivot lever and the second pivot lever. The second end of the third pivot lever is connected to the backrest.

The pivotable mounting of the backrest in the area of the back of the body in combination with the configuration according to the invention of the three pivot levers of the chair has the advantage that, compared to the prior art, a much simpler, more robust chair is provided, which is also due to the savings a large number of components is cheaper to manufacture compared to the prior art. Another advantage is that the simple and at the same time robust construction of the chair increases its lifespan.

According to a preferred embodiment of the seating furniture according to the invention, the body has an indentation on the rear, the backrest engaging at least partially in the indentation on the rear in the open state of the seating furniture. This will the advantage achieved is that a larger pivoting angle is provided for the backrest and the backrest can pivot out unhindered.

The body preferably comprises a reinforcement, the reinforcement being arranged in the region of the rear side and along a plane essentially parallel to the upper side. This has the advantage that the body is reinforced against mechanical loads, whereby the maximum load on the seating furniture is increased, and the seating furniture is reinforced against mechanical loads.

According to the preferred embodiment of the chair according to the invention, the second end of the first pivot lever and the second end of the second pivot lever are connected to the reinforcement. By connecting the first pivot lever and the second pivot lever to the reinforcement, the seating furniture is further reinforced against mechanical loads.

In the area of the upper side, the reinforcement has a projection protruding into the indentation, the backrest being pivotably mounted on the projection. The overhang has the advantage that a particularly large pivoting range of the backrest is provided. In addition, this indentation achieves a suitable, ergonomic ratio of seat area to backrest height. Furthermore, the dimensioning of the indentation makes it possible for the seat to protrude beyond the front of the body by various lengths in the open state of the chair. Furthermore, in an advantageous embodiment variant, a damper element is provided on the seating furniture, the damper element being connected to the seat and the body. This has the advantage that a movement from the closed state to the open state of the chair and vice versa is dampened. In addition, this ensures an even sequence of movements.

In the preferred embodiment, the seating furniture also has, in the closed state, a seal arranged in the area of the upper side between the body and the backrest. This has the advantage that an interior space of the body, in which the seat and at least one usually padded front side of the backrest are stowed in the closed state, is protected against environmental influences. The seal preferably provides a seal against liquid entry. The seating furniture is thus additionally protected against the ingress of moisture and can remain outside a building when it is closed, for example even when it rains.

In the open state of the chair, the seat preferably protrudes beyond the front of the body. This provides a larger seat area in the open state. According to the preferred embodiment of the chair according to the invention, the second pivot lever has a curvature. This has the advantage that an unimpeded pivoting of the seat is guaranteed.

The third pivot lever preferably also has a curvature. This has the advantage that a collision-free pivoting of the seat and backrest is guaranteed.

According to the preferred embodiment of the chair according to the invention, the seat and the backrest are arranged essentially parallel to one another in the closed state. This has the advantage that the seat and the backrest require less space in the closed state, whereby a smaller body can be selected or a larger seat and / or a larger backrest can be provided for a given size of the body.

A spring element is preferably arranged at the first end of the first pivot lever of the chair. This makes it easier for the seat and the backrest to be pivoted out of the closed state.

Furthermore, the seating furniture preferably has a spring element at the second end of the second pivot lever. This prevents unintentional pivoting of the seat and the backrest from the open state.

• Figur 1 zeigt das erfindungsgemäße Sitzmöbel in einer ersten Ausführungsvariante in einem geöffneten Zustand.
• Figur 2 zeigt das erfindungsgemäße Sitzmöbel aus Figur 1 während eines Einklappvorgangs.
• Figur 3 zeigt das erfindungsgemäße Sitzmöbel in einem geschlossenen Zustand.
• Figur 4 zeigt eine Abdichtung zwischen einem Korpus und einer lehne des Sitzmöbels im geschlossenen Zustand.
• Figur 5 zeigt das Sitzmöbel im geschlossenen Zustand in einer perspektivischen Ansicht.
• Figur 6 zeigt das Sitzmöbel in dem geöffneten Zustand in einer perspektivischen Ansicht.

Advantageous configurations of the seating furniture according to the invention and alternative design variants are explained in more detail below with reference to the figures.

• Figure 1 shows the seating furniture according to the invention in a first embodiment variant in an open state.
• Figure 2 shows the seating furniture according to the invention Figure 1 during a collapse.
• Figure 3 shows the seating furniture according to the invention in a closed state.
• Figure 4 shows a seal between a body and a backrest of the chair in the closed state.
• Figure 5 shows the seating furniture in the closed state in a perspective view.
• Figure 6 shows the seating furniture in the open state in a perspective view.

Figure 1 shows the seating furniture 1 according to the invention in a schematic side view with a body 2, a seat 3 and a backrest 4. The body 2 has a top 5, a front 6 and a back 7 and is open on the top 5. In an in Figure 3 and Figure 5 illustrated closed state of the chair 1 according to the invention is the The seat 3 is arranged in the body 2, the backrest 4 covering the upper side 5 of the body 2. In Figure 1 the seating furniture 1 is shown in an open state, in which the seat 3 at least partially covers the top side 5 of the body 2, and the backrest 4 is pivoted from the closed state. The backrest 4 is pivotably mounted on the body 2 in the area of the rear side 7.

The seating furniture 1 comprises three pivot levers 8, 9 and 10. The pivot levers 8, 9 and 10 are each articulated to the seat 3 at a first end 11 at points spaced from one another. A second end 12 of a first pivot lever 8 is connected to the body 2 in the area of the front side 6, a second end 12 of a second pivot lever 9 being connected to the body 2 in the area of the rear side 7. The first end 11 of a third pivot lever 10 is connected to the seat 3 between the first ends 11 of the first pivot lever 8 and the second pivot lever 9. The second end 12 of the third pivot lever 10 is connected to the backrest 4.

The inventive arrangement of the first pivot lever 8, the second pivot lever 9 and the third pivot lever 10, in conjunction with the pivotable mounting of the backrest 4 in the area of the rear side 7 on the body 2, has the advantage that seating furniture 1 is provided with a folding mechanism which manages with a smaller number of moving parts compared to seating furniture of the prior art. As a result, the production costs of the chair 1 according to the invention are reduced and the mechanical load-bearing capacity of the chair 1 is increased.

The pivoting process from the open state to the closed state is shown in Figure 1, Figure 2 and Figure 3 shown. Figure 2 shows the seating furniture 1 according to the invention in a partially closed state, the seat 3 being pivoted at the first ends 11 of the pivot levers 8, 9 and 10. When the backrest 4 is folded in, the third pivot lever 10 exerts a force on the seat 3 at its first end 11, whereby it pivots into the interior of the body 2 in the area of the rear side 7 of the body 2, the seat 3 in the area of the front side 6 protrudes from the interior of the body 2 at an angle. In the further course of the closing process, the seat 3 is introduced into the body 2 in the area of the front side 6 of the body 2, and the backrest 4 is arranged on the upper side 5 of the body 2, whereby the body 2 is closed on its upper side 5. In the in Figure 3 As shown in the closed state of the seating furniture 1 according to the invention, the backrest 4 and the seat 3 are arranged in parallel, the seat 3 being completely accommodated in the interior of the body 2. This ensures optimal use of the space within the body 2.

As in Figure 1, Figure 2 , Figure 3, Figure 5 and Figure 6 As shown, the body 2 of the chair 1 according to the invention has an indentation 13 on the rear side 7. In the in Figure 1 and Figure 6 The open state of the chair 1 shown in the figure, the backrest 4 at least partially engages in the indentation 13 on the rear side 7. When the backrest 4 is pivoted open from the closed state, the indentation 13 in the body 2 ensures that the backrest 4 does not collide with the body 2 on its rear side 7, whereby a larger pivoting angle of the backrest 4 is achieved. In this way, a larger range of angles of the backrest 4 can be realized in the open state, whereby a larger number of different backrest designs or postering designs of the backrest 4 can be provided on the seating furniture 1 according to the invention. In addition, the indentation achieves a suitable, ergonomic ratio of seat area to backrest height. Furthermore, the dimensioning of the indentation makes it possible for the seat to protrude beyond the front of the body by various lengths in the open state of the chair.

The body 2 of the chair 1 according to the invention preferably has a reinforcement 14 which, in FIG Figure 1 is shown hatched. The reinforcement 14 is arranged in the area of the rear side 7 of the body 2 and along a plane that is essentially parallel to the upper side 5. The reinforcement 14 is preferably made of metal. In alternative design variants, the reinforcement 14 can also be made of wood, plastic, a mixture of wood and plastic, or other suitable materials. The reinforcement 14 ensures a high mechanical load-bearing capacity of the chair 1 according to the invention, as a result of which, among other things, the service life of the chair 1 is extended. According to an embodiment variant not shown in the figures, a cavity can be provided in the body 2 under the plane of the reinforcement 14 that is essentially parallel to the top side 5. This can, for example, serve as storage space for additional upholstery and / or blankets or other items. Preferably, as in Figure 1 also the second end 12 of the first pivot lever 8 and the second end 12 of the second pivot lever 9 are connected to the reinforcement 14. This further increases the mechanical strength. According to the in Figure 1 The preferred embodiment of the chair 1 according to the invention shown here has the reinforcement 14 in the area of the top 5 a projection 15 protruding into the indentation 13. In this embodiment, the backrest 4 is pivotably mounted on the projection 15. This strengthens the connection between the backrest 4 and the body 2.

In the preferred embodiment, the seating furniture 1 has a damper element 16 which is connected to the seat 3 and the body 2. In alternative design variants, the damper element 16 can also be used, for example, with the body 2 and at least one of the three pivot levers 8, 9 and 10, or with two of the pivot levers 8, 9 and 10 be connected. The damper element 16 dampens the pivoting in and out from the open state or the closed state and ensures a smooth sequence of movements.

Figure 4 shows an excerpt from Figure 3 in the area of the intersection of the top 5 and the front 6 of the body 2 of the seating furniture 1 according to the invention. The seal 17 can be designed, for example, as a rubber lip which is attached to the top 5 of the body 2. Alternatively, a seal 17 in the form of a tab-shaped overhang can also be provided on the seat 3, which, starting from the top 5, at least partially engages around the body 2. The seal 17 provides the advantage that the interior of the body 2 is protected, for example, against the ingress of dirt and moisture. As a result, the seat 3 and the backrest 4 on their front side 6, on which a user of the seating furniture 1 leans when sitting on the seating furniture 1, and on which upholstery is usually attached, are protected from dirt and environmental influences when closed.

As in Figure 1 Shown in detail, the seat 3 in the preferred embodiment of the chair 1 according to the invention protrudes beyond the front 6 in the open state. This has the advantage that a large seating area is provided for a user of the chair 1, as a result of which the ergonomics of the chair 1 is improved.

The second pivot lever preferably has a curvature, as in FIG Figure 2 can be seen. The curvature ensures an unhindered pivoting of the seat 3 into the body 2, as well as the retraction of the seat 3 from the open state behind the front 6 of the body 2. The extent of the curvature depends on the dimensions of the chair 1, such as the length of the Seat 3 and allows a variation of the pivoting process. The curvature of the second pivot lever 9 in the open state of the chair 1 essentially follows the course of the indentation 13 on the rear side 7 of the body 2. Furthermore, the third pivot lever 10 preferably has a curvature. The curvature of the third pivot lever 10 enables the angle between the seat 3 and the backrest 4 to be varied in the open state of the chair 1.

According to an exemplary embodiment of the chair 1 according to the invention, the first pivot lever 8 has a length of 340 mm, the second pivot lever 9 has a length of 132 mm and the third pivot lever 10 has a length of 225.5 mm. The second pivot lever 9 also has a curvature of approximately 40 ° and the third pivot lever 10 has a curvature of approximately 20 °.

In the preferred embodiment, the seating furniture 1 according to the invention has a spring element 18 at the first end 11 of the first pivot lever 8. This makes it easier for the seat 3 and the backrest 4 to be pivoted out of the closed state. In addition, a spring element 18 is preferably arranged at the second end 12 of the second pivot lever 9. This prevents the seat 3 and the backrest 4 from being inadvertently pivoted in from the open state. The spring elements 18 can be designed, for example, as spiral springs. Further forms of spring elements 18 are generally known to the person skilled in the art.

Claims (13)

1. Seating furniture (1) comprising a corpus (2) having a top (5), a front (6) and a back (7), a seat (3), and a backrest (4), wherein the corpus (2) is open at the top (5) and the seat (3) is, when the seating furniture (1) is a closed state, arranged within the corpus (2) with the backrest (4) covering the upper surface (5) of the corpus (2), and when the furniture (1) is in an open state, the seat (3) at least partially covers the top (5) of the corpus (2) with the backrest (4) being pivoted out of the closed state,

   characterized in that

   the backrest (4) is, in the area of the back (7), pivotably mounted to the corpus (2), and the seating furniture (1) comprises three pivot levers (8, 9, 10), which are, at a respective first end (11), connected to the seat (3) by joints at points spaced from each other, wherein a second end (12) of a first pivot lever (8) is connected to the corpus (2) in the area of the front (6) and a second end (12) of a second pivot lever (9) in the area of the back (7), wherein the first end (11) of a third pivot lever (10) is connected to the seat (3) between the first ends (11) of the first pivot lever (8) and the second pivot lever (9), and the second end (12) of the third pivot lever (10) is connected to the backrest (4).
2. Seating furniture (1) according to claim 1, characterized in that the corpus (2) has an indentation (13) at the back (7), the backrest (4), when the seating furniture (1) is in the opened state, at least partially engaging in the indentation (13) at the back (7).
3. Seating furniture (1) according to one of the claims 1 or 2, characterized in that the corpus (2) comprises a reinforcement (14), the reinforcement (14) being arranged in the area of the back (7) and along a plane substantially parallel to the top (5).
4. Seating furniture (1) according to claim 3, characterized in that the second end (12) of the first pivot lever (8) and the second end (12) of the second pivot lever (9) are connected to the reinforcement (14).
5. Seating furniture (1) according to claim 2 in connection with claim 3 or 4, characterized in that the reinforcement (14) has, in the area of the top (5), a projection (15) extending into the indentation (13), the backrest (4) being pivotably mounted to the projection (15).
6. Seating furniture (1) according to any one of the claims 1 to 5, characterized in that the seating furniture (1) has a damping element (16), the damping element (16) being connected to the seat (3) and the corpus (2).
7. Seating furniture (1) according to any one of the claims 1 to 6, characterized in that the seating furniture (1) has, in the closed state, a sealing (17) arranged on the top (5) between the corpus (2) and the backrest (4).
8. Seating furniture (1) according to any one of the claims 1 to 7, characterized in that, in the opened state, the seat (3) extends beyond the front (6) of the corpus (2).
9. Seating furniture (1) according to any one of the claims 1 to 8, characterized in that the second pivot lever (9) has a curvature.
10. Seating furniture (1) according to any one of the claims 1 to 9, characterized in that the third pivot lever (10) has a curvature.
11. Seating furniture (1) according to any one of the claims 1 to 10, characterized in that the seat (3) and the backrest (4) of the seating furniture (1) are, in the closed state, arranged substantially parallel.
12. Seating furniture (1) according to any one of the claims 1 to 11, characterized in that the seating furniture (1) has a spring element (18) at the first end (11) of the first pivot lever (8).
13. Seating furniture (1) according to any one of the claims 1 to 12, characterized in that the seating furniture (1) has a spring element (18) at the second end (12) of the second pivot lever (9).

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