WO2008000295A1

WO2008000295A1 - Seating

Info

Publication number: WO2008000295A1
Application number: PCT/EP2006/008115
Authority: WO
Inventors: Eckhard Hansen
Original assignee: Eckhard Hansen
Priority date: 2006-06-30
Filing date: 2006-08-16
Publication date: 2008-01-03
Also published as: EP2046165A1; EP2046165B1

Abstract

The invention relates to seating (1) comprising a seat element (2), a backrest element (3) and a supporting frame (4), wherein the supporting frame (4) comprises a carrier (8) and a mechanical means (10) for transmitting a motion, such as a lever (11) and/or guide, which connects the carrier (8) to the seat element (2) in a rear seat region (13). A leaf spring element (9), which is mounted on the stationary carrier (8), is provided as the front fastening means for the seat element (2), wherein the leaf spring element (9) comprises a first section that is guided on the carrier (8) and a second section disposed freely between the carrier (8) and the seat element (2). In the first section, the leaf spring element (9) is directed obliquely upward in the direction of a front edge (19) of the seat element (2).

Description

"Seating"

The invention relates to a chair according to the preamble of claim 1.

From DE 101 06 792 Al a chair with a seat element, a back member and a support frame is known, wherein the support frame comprises a support and a mechanical means for transmitting a movement such as lever and / or guide, which carries the carrier in a rear seating area the seat element connects, wherein as a front fastening means for the seat member, a leaf spring element is provided, which is mounted on the fixed support, wherein the leaf spring element has a guided on the carrier first portion and a lying between the carrier and the seat member second portion. As reclining a person on this seating leads to a strong lifting of the front portion of the seat element.

The invention has for its object to develop a chair, which has an optimized movement of the seat member when reclining a person. Furthermore, it is an object of the invention with simple means to realize further adjustment.

This object is based on the features of the preamble of claim 1 by the characterizing Characteristics of claim 1 solved. In the dependent claims advantageous and expedient developments are given.

The seating furniture according to the invention has a leaf spring element which, in a first section, points obliquely upwards in the direction of a front edge of the seat element. This orientation of the leaf spring element leads to a movement characteristic of the seat element, in which this easily lifts when reclining a person in the seating in a front section and also displaced approximately horizontally in the direction of the back element. Thus, it is possible, alone by an inventive oblique position of the leaf spring element the

To change the movement characteristics of the seat member in a desired manner and thus limit the lifting movement, which executes the seat member when reclining a person in the chair, to a desired size. Due to the inclination of the leaf spring element this also allows an approximately horizontal movement of the seat element.

Furthermore, it is provided to adjust a pitch of the leaf spring element in a transition section, which lies between the first and the second section, by a lower support. As a result, a fine adjustment of the basic position of the seat element by simple technical means is possible.

In particular, a lifting of the leaf spring element is provided in its transition section by the lower support, since this can be repealed in a default setting inclination of the seat member to its leading edge.

Furthermore, it is provided to form the support as a cam, which is rotatable about an axis of rotation centric or eccentric. This can be done with technical simple means in different ways to influence the presetting.

According to the invention it is provided to arrange in the first portion of the leaf spring element, an upper abutment which acts from above on the leaf spring element, if the upper abutment along the first portion of the leaf spring element is movable, it is possible to adjust the hardness of the leaf spring element continuously and so the seat member for people with different body weight.

In particular, it is provided to equip the upper counter bearing with an tooth slide and a gear, wherein the leaf spring element is clamped between a bearing surface of the carrier and the tooth slide and wherein the tooth slide by a rotation of the gear parallel to the support surface of the carrier in a longitudinal direction of the leaf spring element movable is. As a result, a stepless adjustability of the leaf spring element can be realized with technically simple means.

Furthermore, it is provided, by an extension of the lever, which connects the carrier and the seat member to form a back element carrier, on which the back element is attached. As a result, a movement coupling of the seat element with the back element and thus a cushioning of the back element via the leaf spring element is possible.

Finally, the invention provides a fixability of the lever in at least two rotational positions on the carrier. This makes it possible to lock the seat element and the back member in preferred positions. Further details of the invention are described in the drawing with reference to schematically illustrated embodiments.

Hereby shows:

Figure 1: a chair in side view in a first position;

FIG. 2 shows an enlarged section of FIG. 1 in the region of the support frame;

FIG. 3 shows a bottom view of the seat furniture shown in FIG. 1 from an arrow direction III;

Figure 4: the chair in side view in a second position;

FIG. 5: an enlarged detail from FIG. 4 in the region of the support frame;

Figure 6: the chair in side view in a third position and

Figure 7: a superimposed representation of the seating furniture according to the invention in its positions Sil and SIII.

In Figure 1, a chair 1 is shown in a first position SI partially cut in side view, which was omitted on a hatching cut surfaces to maintain clarity. The seating 1 essentially comprises a seat element 2, a back element 3, a support frame 4 and a bogie 5. The bogie 5 comprises rollers 6 and a vertical gas spring 7, on which the support frame 4 is fixed. The support frame 4 consists essentially of a carrier Q, a Leaf spring element 9 and a mechanical means 10 for transmitting a movement, which is designed as a lever 11. The seat element 2 is connected in a front seat 12 via the leaf spring element 9 and in a rear seat 13 via the lever 11 to the carrier 8. With an extension 14, the lever 11 is further designed as a back element support 15, on which the back element 3 is attached. In the position SI, in which the chair 1 is unloaded, the seat element 2 with respect to a horizontal 16 an inclination of α = 5 ° and inclines in an arrow x 'to a front edge 19. The seat element 2 and the back element 3 have in the position SI on an opening angle ß of about 80 °.

2 shows the figure 1 in the region of the support frame 4 in an enlarged view. The leaf spring element 9 consists of eight individual leaf springs 9a to 9h with partially different lengths. Furthermore, the leaf spring element 9 has a first, right section A and a second, left section B on. In the first section A, the leaf spring element 9 is clamped between a support surface 8 formed on the support surface 17 and a toothed slide 18 and thus fixed to the support 8. The section A of the leaf spring element 8 has obliquely upward in the direction of the front edge 19 of the seat member 2 and is in this case at an angle Y = 18 ° to a further horizontal 20. The toothed slide 18 is arranged by rotation of this driving and fixed to the support 8 Gear 21 in the direction of arrow v or v 'movable. As a result, a hardness of the leaf spring element 9 is adjustable. In the second, left section B, the leaf spring element 9 extends approximately bent by 90 °. The

Leaf spring element 9 is fastened at a free end 22 with a sleeve 23 rotatably mounted on the seat element 2 about a rotation axis D23 with a screw 24. In a transition region C of the leaf spring element 9, which between the two sections A and B, a support 25 is disposed on the carrier 8. This is formed by a cam 26, which is fastened to the carrier 8 rotatably about a rotation axis D26. By this support 25, the leaf spring element 9 can be raised and allows an adjustment of the inclination of the seat element 2. The tooth slide 18 and the gear 21 form an upper abutment 27 to this support 25. In the figure 4 and 5, the cam 26, for example, in one Shown position in which this the

Leaf spring element 9 lifts. The lever 11 connects the carrier 8 with the rear seat portion 13 of the seat member 2. The lever 11 is fixed to the carrier 8 rotatably about a rotation axis D118. The seat member 2 is rotatably attached to the lever 11 about a rotation axis D112. Furthermore, a latching mechanism 28 is provided between the carrier 8 and the lever 11, through which a rotation of the lever 11 about the rotational axis D118 can be blocked.

If the lever 11 is fixed in the position 29 shown in FIG. 1 and FIG. 2 by the latching mechanism 28 on the carrier 8, a load of the seat element 2 with a weight G of a person seated on the chair 1, not shown, causes a drop of the seat member 2 with its front seat portion 12 in an arrow direction y 'against the leaf spring element 9. Here, the seat member 2 rotates about its axis of rotation D112 to the left. The leaf spring element 9 causes a counterforce against the rotational force caused by the weight G until a balance of forces is established.

By means of the latching mechanism 28, which can engage in one of the bores 40 shown, different positions of the seat element 2 and the back element 3 can be preselected and fixed. If the lever 11 is not fixed to the carrier 8 in the position 29 shown in FIG. 1 and FIG. 2, loading of the seat element 2 with the weight G of the person sitting on the seat 1, not shown, causes movement of the seat element 2 In this case, the movement is dependent on how the resulting weight force in the front or rear seating area 12 or 13 acts on the seat element 2. If the resulting weight acts on the seat element 2 in the direction of arrow x 'in front of the axis of rotation D23, essentially the above-described rotational movement of the seat element 2 is established about the axis of rotation D112, since the lever 11 can only turn to the right about the rotary bearing D118, because a rotation to the left is blocked by a stop 30 shown only in the figure 2 on the support 8. If the resultant force of the weight G engages, for example, in the rear seating area 13 of the seat element 2, the seat element 2 with its rear seating area 13 drops in the direction of the arrow y '. Here, the seat member 2 moves with the rotation axis D112 in a clockwise direction on a circular path 31 about the rotation axis D118. As a result of this rotational movement, the leaf spring element 9 fastened to the shaft 23 of the seat element 2 is pulled approximately in an arrow direction x. This tensile load causes a movement of the seat member 2 with its axis of rotation D23, for example, on an arcuate path of movement 32, the slope decreases continuously. The seat element 2 follows this movement path 32 until a balance of forces is established again.

FIG. 3 shows a bottom view of the seat 1 shown in FIG. 1 from an arrow III direction. In the bottom view, a first rotary handle 33 can be seen, through which the cam 26, which forms the support 25 for the leaf spring element 9, is rotatable. Furthermore, the bottom view shows a second rotary handle 34, with which the gear 21 is rotatable, which the tooth slide 18th drives. On the lever 11, which is designed as a fork 35 and has two arms 35a and 35b, a latching pin 36 is arranged, which forms the latching mechanism 28 and in the directions of the arrow z or z 'is displaceable. The locking pin 36 is shown in a first position 37 and in a second position 38. In the second position 38, the locking pin 36 engages with a nose 39 in the bore 40, which is formed on the carrier 8. As a result, a rotation of the lever 9 is blocked about the rotation axis D118. In the first position 37, the locking pin 36 is retracted in the direction of arrow z and stands with its nose 39 outside of the carrier 8 and thus can rotate freely about its axis of rotation D118.

In Figure 4, the known from Figures 1 to 3 seating 1 is shown in a second position Sil in side view. By a rotation of the cam 26 by about 90 ° clockwise, the seat member 2 is now raised relative to the position shown in Figure 1 SI to the horizontal 16 to an inclination angle α = 0 °. The lever 11 is not coupled to the carrier 8 and has slightly rotated to the right as a result of the adjustment of the support 25 about its axis of rotation D118 relative to its position shown in the figure 1. The opening angle ß between the seat member 2 and the back member 3 is in this position Sil as well as in the position SI at about 80 °.

In the figure 5, which shows an enlarged view of Figure 4 in the region of the support frame 4, it can be seen how the cam 26, the leaf spring member 9 deformed in a transition region C and lifts from the support surface 17.

In the figure 6, the seating furniture 1 known from Figures 1 to 5 is shown in a third position SIII in side view. The third position SIII results from the position shown in Figures 4 and 5 Sil by the Load of the chair 1 with the weight of a person, not shown, wherein the person not shown also leans against the back member 3. On the described burden, the chair 1 reacts by movements of the seat member 2 and the back member 3 in the direction of arrow x, in which case the seat member 2 lifts with its front seat 12 and lowers with its rear seat 13 and wherein the back member 3 also on the Lever 11 rotates about the axis of rotation D118 to the right. Thus, apart from the orientation of the seat element 2 and the back element 3, the opening angle β between the seat element 2 and the back element 3 also changes. In the position SIII of the seat 1, the opening angle β has a value of approximately 95 °.

In the figure 7, the known from Figures 1 to 6 seating 1 is shown in its two positions Sil and SIII in a superimposed representation in the region of the support frame 4. In the superimposed representation it can be seen how the seat element 2 is displaced from a horizontal position into a sloping position to the back element 3 by the deformation of the leaf spring element 9 and the rotation of the lever 11 about the axis of rotation D118 and thereby lifts with its front edge 19 and its lower seating area 13 lowers. For this purpose, the rotation axis D23 moves from a point Pl to a point P2, and the rotation axis D112 moves from a point P3 to a point P4. Of course, the lever 11 is not locked to the support 8 in this movement process, which is caused by the weight of sitting on the chair 1, not shown person. The seat member 2 thus moves between a front attachment means 41, which is essentially formed by the leaf spring element 9, and a rear attachment means 42, which is essentially formed by a mechanical means 10 for transmitting a movement, which is designed as a lever 11. The back Fastener 42 allows the seat member 2 either the movement on a circular path 31 about the axis of rotation D118 with possibly simultaneous rotation about the axis of rotation D112 or a pure rotation about the axis of rotation D118. The front fastening means 41 limits an adjustment of the seat member 2, wherein the position of the rotation axis D23 at which the front fastening element 41 and the seat member 2 are connected to each other can also change and wherein in principle a rotation of the seat member 2 about the rotation axis D23 is possible. The position of the back element 3 is determined by the position of the rear fastening element 42, since the back element 3 is articulated thereto.

The invention is not limited to illustrated or described embodiments. Rather, it includes developments of the invention within the scope of the patent claims.

List of reference numbers:

1 seating

2 seat element

3 back element

3 support frame

5 bogie

6 roll

7 gas spring

8 carriers

9 leaf spring element

10 mechanical means for transmitting a movement

11 lever

12 front seating area of 2

13 rear seating area of 2

14 extension of 11

15 back element carrier

16 first horizontal

17 contact surface on 8

18 toothpicks

19 leading edge of 2

20 second horizontal

21 gear

22 free end of 9

23 sleeve

24 screw for fixing 9 to 23

25 lower support

26 cam

27 lower counter bearing

28 detent mechanism 9 position of 11

30 stop at 8 for 11

31 circular path

32 trajectory of D23 3 first twist grip for 26

34 second rotary handle for 21 35 fork 35a, 35b arm of 35

36 detent pin

37 first position of 36

38 second position of 36

39 nose of 36 40 bore in 8

41 front attachment means

42 rear fastener A first section of 9

B second section of 9

C transition range of 9 between A and B

D23 rotation axis of 23

D26 rotation axis of 26

D112 rotation axis between 11 and 2

D118 rotation axis between 11 and 8

G weight

SI first position of 1

Sil second position of 1

SIII third position of 1 x, x 'spatial direction y, y' spatial direction z, z 'spatial direction v, v' spatial direction w direction of rotation α inclination of 2 ß angle between 2 and 3 γ inclination of 9 in section A.

Claims

Claims:

1. Seating furniture (1) with a seat element (2), a back element (3) and a support frame (4), wherein the support frame (4) comprises a support (8) and a mechanical means (10) for transmitting a movement such as lever (1). 11) and / or guide, which connects the carrier (8) in a rear seating area (13) to the seat element (2), wherein a leaf spring element (9) is provided as front attachment means (41) for the seat element (2), which is mounted on the fixed support (8), wherein the leaf spring element (9) guided on the support (8) first portion (A) and a free between the support (8) and the seat member (2) lying second portion (B ), characterized in that the leaf spring element (9) in the first section (A) obliquely upwards in the direction of a front edge (19) of the seat element (2).

2. Seating furniture according to claim 1, characterized in that a slope of the leaf spring element (9) in a transition region (C) between the first portion (A) and the second portion (B) by a lower support (25) is adjustable.

3. Seating furniture according to one of the preceding claims, characterized in that the leaf spring element (9) in its transition section (C) by the lower support (25) can be raised.

4. Seating furniture according to one of the preceding claims, characterized in that the lower support (25) as a cam (26) is formed, which about a rotational axis (D26) is rotatable.

5. Seating furniture according to one of the preceding claims, characterized in that the cam (26) centrally around the Rotary axis (D26) is rotatable.

6. Seating furniture according to one of the preceding claims, characterized in that the cam 26 is eccentrically rotatable about the axis of rotation (D26).

7. Seating furniture according to one of the preceding claims, characterized in that in the first portion (A) of the leaf spring element (9), an upper abutment (27) is arranged, which acts from above on the leaf spring element (9).

8. Seating furniture according to one of the preceding claims, characterized in that the upper abutment (27) along the first portion (A) of the leaf spring element (9) is movable.

9. Seating furniture according to one of the preceding claims, characterized in that the upper abutment (27) comprises a toothed slide (18) and a gear (21), wherein the leaf spring element (9) between a support surface (17) of the carrier (8) and the toothed slide (18) is clamped and wherein the toothed slide (18) by a rotation of the toothed wheel

(21) parallel to the support surface (17) of the carrier (8) in a longitudinal direction (v, v ') of the leaf spring element (9) is movable.

10. Seating furniture according to one of the preceding claims, characterized in that an extension of the lever (11) forms a back element support (15) on which the back element (3) is fixed.

11. Seating furniture according to one of the preceding claims, characterized in that the lever (11) in at least two rotational positions on the carrier (8) can be fixed.