Seating with a seat and a backrest

Abstract

A seating arrangement comprising a seat (1) and a backrest (2), wherein the seating arrangement has two furniture feet (3) at a front area and two casters (5) attached to a support frame (4) at a rear area, and wherein the seating arrangement in a use position rests on the casters (5) and the furniture feet (3) on a base (6), characterized in that a chassis (9) is attached to the support frame (4), wherein the chassis (9) has two spaced-apart wheels (10) and a swivel mechanism (11), wherein the two spaced-apart wheels (10) are arranged at a distance from the base (6) in the use position of the seating arrangement, and the swivel mechanism (11) is designed to swivel the wheels (10) into a transport position of the seating arrangement in which the seating arrangement rests on the base (6) via the two spaced-apart wheels (10) and the casters (5).

Description

[0001] The invention relates to a seating arrangement with a seat and a backrest, wherein the seating arrangement has two furniture feet at a front area and two casters attached to a support frame at a rear area, and the seating arrangement rests on the casters and the furniture feet on a base in a position of use.

[0002] The casters allow the seat to be moved by lifting the front of the seat and then sliding it on the casters to the desired location, as is known, for example, from DE 200 00 926 U1. Such seats are often equipped with an integrated chair mechanism for adjusting the seat and backrest, and possibly with a built-in stand-up aid, which makes the seat quite heavy and tilting it onto its rear casters increasingly difficult.

[0003] The invention is therefore based on the objective of further developing the seating arrangement in such a way that it is made easier to move the seating arrangement to a different location.

[0004] According to the invention, this problem is solved by the features of claim 1.

[0005] The seating arrangement according to the invention comprises a seat and a backrest, wherein the seating arrangement has two furniture feet at a front area and two casters attached to a support frame at a rear area, and the seating arrangement rests on the casters and furniture feet on a base in its operating position. Furthermore, a chassis is attached to the support frame, which provides two spaced-apart wheels and a swivel mechanism, wherein the two spaced-apart wheels are arranged at a distance from the base in the operating position of the seating arrangement, and the swivel mechanism is designed to swivel the wheels into a transport position of the seating arrangement, in which the seating arrangement rests on the base via the two spaced-apart wheels and the casters.

[0006] In its transport position, the seat can be easily moved on its two wheels and casters without having to lift it. This even makes it possible to move the seat with a person sitting on it.

[0007] Furthermore, the invention can be implemented simply and cost-effectively, as it uses the existing support frame and rear rollers and essentially only adds two spaced-apart wheels and a swivel mechanism.

[0008] The term "base" as used in the invention refers to the surface on which the seat rests. This is typically the floor. The furniture feet at the front can optionally be attached to the support frame or to another load-bearing element, such as the armrests.

[0009] Further embodiments of the invention are the subject of the dependent claims.

[0010] According to a preferred embodiment, the two spaced-apart wheels are pivotally mounted on the pivoting mechanism and / or the support frame about a wheel pivot axis. Furthermore, an actuating linkage can be connected to the two spaced-apart wheels to move them back and forth between the operating position and the transport position. It is conceivable that the actuating linkage is connected to mechanical or electromechanical actuators for adjusting the two spaced-apart wheels, with any electromechanical actuators being, for example, a linear actuator.

[0011] Preferably, however, mechanical actuating means are provided, which are formed by an actuating lever arranged in the rear area of ​​the seat, wherein, in a preferred embodiment, the actuating lever is pivotally mounted on the support frame or chassis about an actuating lever pivot axis. The actuating lever can, in particular, be operated by the foot of a person standing behind the seat, so that the person's body weight can be used in a simple manner to pivot the two spaced-apart wheels from the operating position to the transport position.

[0012] For the pivotable mounting of the two spaced-apart wheels, the chassis can have a one-piece or multi-piece mounting frame, which is attached to the support frame, in particular by bolting. In a further embodiment of the invention, the two spaced-apart wheels are connected to each other via a connecting element for joint pivoting. Furthermore, the actuating linkage can be pivotally coupled at one end to the connecting element and at another end to the mechanical or electromechanical actuating means. In a preferred embodiment, the actuating linkage is pivotally coupled at one end to the connecting element about a first pivot axis and at another end to the actuating lever about a second pivot axis.

[0013] Furthermore, in the transport position, the adjusting lever can engage with a stop element to limit its travel and to signal to the person operating the lever that the seat is in the transport position. Ideally, the adjusting lever is self-locking in the transport position, eliminating the need for additional locking and preventing unintentional adjustment.

[0014] In the preferred embodiment, the actuating lever has a transverse element to which the actuating linkage is pivotally mounted about the second pivot axis. If the geometry is selected such that the second pivot axis, in the transport position, lies in a region between the contact surface and a plane defined by the first pivot axis and the actuating lever pivot axis, the actuating lever is self-locking without any further effort.

[0015] The drawing shows Fig. 1. A side view of the seat in its used position, Fig. 2 a side view of the seat in the transport position, Fig. 3 a three-dimensional representation of the seat mechanism with chassis, Fig. 4 a three-dimensional exploded view of the support frame and chassis, Fig. 5 a top view of the chassis attached to the support frame, Fig. 6 a partially cut-away side view of the support frame and chassis in the seating position, Fig. 7 a partially cut-out side view of the support frame and chassis in the transport position of the seat.

[0016] Fig. Figure 1 shows a seating arrangement according to the invention, comprising a seat 1 and a backrest 2, wherein the seating arrangement has two furniture feet 3 at a front area and two casters 5 attached to a support frame 4 at a rear area. The seating arrangement is supported in the Fig. The seat is positioned on its casters 5 and furniture feet 3 in the use position shown in Figure 1, resting on a base 6. In the illustrated embodiment, the seat also has armrests 7. Furthermore, the seat can be equipped with a seat and backrest mechanism 8, as exemplified in Figure 1. Fig. Figure 3 shows that it serves to adjust the inclination of the backrest 2, whereby the seat is moved forward simultaneously or with a time delay when the backrest is tilted backward, and vice versa. Naturally, the seat can also have a retractable footrest and / or a headrest. The adjustment of the backrest, seat, and any footrest is preferably carried out by one or more actuators. Furthermore, the seat can be equipped with a stand-up aid, such as that known from DE 200 00 926 U1.

[0017] In Fig. Figure 4 shows the support frame 4 without the seat and backrest mechanism 8. It essentially consists of two longitudinal profiles 4a, 4b, which are connected to each other via two transverse profiles 4c, 4d. The rollers 5 are preferably designed as swivel casters and are mounted at the rear end of the longitudinal profiles 4a, 4b.

[0018] A chassis 9 is attached to the support frame 4. The chassis comprises a one-piece or multi-piece mounting frame 12, two spaced-apart wheels 10, and a pivoting mechanism 11. The two spaced-apart wheels 10 are connected to each other via a connecting element 13 for pivoting together about a wheel pivot axis 21. The pivoting mechanism 11 also includes an actuating lever 14, which is pivotally connected about an actuating lever pivot axis 15 at the rear end of the support frame 4. Furthermore, an actuating linkage 16 is provided, which is pivoted at one end about a first pivot axis 17 ( Fig. 5) is pivotally coupled to the connecting element 13 and to a transverse element 19 of the actuating lever 14 at the other end about a second pivot axis 18. While the actuating linkage 16 is designed as a simple actuating rod in the illustrated embodiment, a multi-part design is also possible in principle. In any case, it must be ensured that the actuating linkage is shaped in such a way that it does not collide with the seat and backrest mechanism 8 during its movement.

[0019] The chassis 9 is attached to the front cross profile 4c in the area of ​​the mounting frame 12 and to the support frame 4 via the articulated coupling of the actuating lever 14 in the area of ​​the actuating lever pivot axis 15, preferably requiring only four screws 20a - 20d.

[0020] The chassis 9 is designed such that the two spaced-apart wheels 10 are in the operating position ( Fig. 1) the seat is arranged at a distance from the base 6 and the swivel mechanism 11 is used to swivel the wheels 10 into a transport position ( Fig. 2) the seat is designed in which the seat is supported on the base 6 via the two spaced-apart wheels 10 and the casters 5. Actuation of the swivel mechanism in the opposite direction causes the furniture feet 3 to lower onto the base 6, while at the same time the wheels 10 lift off the base 6.

[0021] The interaction of the two spaced-apart wheels 10, the actuating linkage 16 and the adjusting lever 14 is described in detail in the Fig. 6 and Fig. 7 evident, whereby the Fig. 6 the operating position and the Fig. Figure 7 shows the transport position of the seat.

[0022] Actuation of the adjusting lever 14 in the direction of arrow 22 from the position according to Fig. 6 into the position according to Fig. 7 causes the actuating linkage 16 to retract, causing the wheels 10 to pivot about the wheel pivot axis 21, thereby coming into contact with the support surface 6 and lifting the furniture feet from the support surface 6. In the transport position, the pivoting movement of the actuating lever 14 is limited by a stop element 24, which here is formed by the transverse element 19 of the actuating lever 14. This element comes into contact with the actuating linkage 16 and blocks any further lowering of the actuating linkage 16. According to a preferred embodiment of the invention, the actuating lever is in a self-locking position in the transport position. This is achieved by the second pivot axis 18 being located in the transport position in a region between the support surface 6 and a plane 23 defined by the first pivot axis 17 and the actuating lever pivot axis 15. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 200 00 926 U1 [0002, 0016]

Claims

[1] Seating arrangement with a seat (1) and a backrest (2), wherein the seating arrangement has two furniture feet (3) at a front area and two casters (5) attached to a support frame (4) at a rear area and the seating arrangement rests on the casters (5) and the furniture feet (3) on a base (6) in a position of use, characterized by , that a chassis (9) is attached to the support frame (4), wherein the chassis (9) has two spaced-apart wheels (10) and a swivel mechanism (11), wherein the two spaced-apart wheels (10) are arranged at a distance from the base (6) in the use position of the seat and the swivel mechanism (11) is designed to swivel the wheels (10) into a transport position of the seat, in which the seat is supported on the base (6) via the two spaced-apart wheels (10) and the rollers (5). [2] Seating arrangement according to claim 1, characterized by, that the two spaced-apart wheels (10) are pivotably mounted about a wheel pivot axis (21) on the pivoting mechanism (11) and / or the support frame (4) and an actuating linkage (16) is connected to the two spaced-apart wheels (10) to move the two spaced-apart wheels (10) back and forth between the operating position and the transport position. [3] Seating according to claim 2, characterized by , that the actuating linkage (16) is connected to mechanical or electromechanical adjusting means for adjusting the two spaced-apart wheels (10). [4] Seating arrangement according to claim 3, characterized by that the electromechanical actuators are formed by a linear drive. [5] Seating according to claim 3, characterized by , that the mechanical actuating means are formed by an actuating lever (14) located in the rear area of ​​the seat. [6] Seating according to claim 5, characterized by, that the actuating lever (14) is pivotably connected to the support frame (4) or to the chassis (9) about an actuating lever pivot axis (15). [7] Seating arrangement according to claim 1, characterized by that the chassis (9) has a one-piece or multi-piece support frame (12) which is attached to the support frame (4), in particular screwed to it, and on which the two spaced-apart wheels (10) are pivotably mounted. [8] Seating arrangement according to claim 1, characterized by , that the two spaced-apart wheels (10) are connected to each other via a connecting element (13) for joint pivoting. [9] Seating according to claims 2 and 8, characterized by , that the actuating linkage (16) is pivotally coupled at one end to the connecting element (13) and at another end is coupled to the mechanical or electromechanical actuating means. [10] Seating arrangement according to claim 5, characterized by, that the actuating linkage (16) is articulated at one end about a first joint axis (17) to the connecting element (13) and at the other end about a second joint axis (18) to the actuating lever (14). [11] Seating arrangement according to claim 5, characterized by , that the actuating lever (14) in the transport position comes into operative contact with a stop element (24). [12] Seating arrangement according to claim 11, characterized by , that the actuating lever (14) is in a self-locking position in the transport position. [13] Seating arrangement according to claim 10, characterized by , that the actuating lever (14) has a transverse element (19) on which the actuating linkage (16) is pivotally mounted about the second pivot axis (18). [14] Seating arrangement according to claims 6 and 10, characterized by, that the second joint axis (18) in the transport position is located in an area between the support surface (6) and a plane (23) spanned by the first joint axis (17) and the actuating lever pivot axis (15) in order to cause self-locking of the actuating lever (14).

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