FOLDABLE CHAIR

Abstract

Foldable chair comprising a seat (10) and at least three legs (11) attached to the seat (10). A leg holder (12) which is arranged spaced apart from the seat (10) is associated with each leg (11) and each leg holder (12) has a connecting element. The legs are received at a mounting (13) by means of the connecting elements so as to be movable relative to one another. The leg holders (12) have as the connecting element a formed-on part, said formed-on parts (12a) being rotatably mounted between the legs (11) and thus a easy to produce, foldable chair is provided, which may take up high forces in the connecting means between the legs with minimal material wear.

Claims

1. Foldable chair comprising a seat and at least three legs attached to the seat, wherein a leg holder which is arranged spaced apart from the seat is associated with each leg, wherein each leg holder has a connecting element, wherein the legs are received at a mounting by means of the connecting elements so as to be movable relative to one another, wherein the leg holders have as the connecting element a formed-on part, said formed-on parts being rotatably mounted between the legs in the mounting made of moulded parts.

2. Foldable chair according to claim 1, wherein the mounting is made of two moulded parts which, in the operational state, are joined together at a joint site and have recesses at the joint site for the formed-on parts of the leg holders.

3. Foldable chair according to claim 1 wherein the formed-on parts merge, via a post projecting from the leg holder, into a circular nipple which extends transversely to the post and beyond the diameter of the post, said nipple being mounted, in the operational state, in the recesses provided with an undercut.

4. Foldable chair according to claim 2, wherein the recesses are formed circular and with play, and are complementary to the formed-on parts.

5. Foldable chair according to claim 2, wherein, with the foldable chair standing upright, the two moulded parts joined together from above and below and connected with a central screw constitute the mounting.

6. Foldable chair according to claim 2, wherein moulded parts are identically constructed and are preferably made hemispherical.

7. Foldable chair according to claim 1, wherein the leg holders have openings for accommodating an upper leg part and a lower leg part which can be displaced relative to one another in the longitudinal direction of the leg.

8. Foldable chair according to claim 7, wherein a first of the leg parts comprising the upper leg part and the lower leg part is fixed at the leg holder and is hollow and the other leg part is accommodated axially displaceably within the first leg part.

9. Foldable chair according to claim 8, wherein the upper leg part, as the first of the leg parts, is fixed onto the leg holder and that the lower leg part is movably mounted on the upper leg part and is fixable and adjustable by means of a detent pin locking arrangement.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The invention is described in greater detail by reference to an exemplary embodiment illustrated the drawings, in which:

[0013] FIG. 1 shows a three-dimensional view of a foldable chair,

[0014] FIG. 2 shows the legs connected to one another, removed from the seat surface and in the collapsed condition,

[0015] FIG. 3 shows a three-dimensional view from above of the leg holders and the mounting,

[0016] FIG. 4 shows a plan view of the representation of FIG. 3,

[0017] FIG. 5 shows a sectional view along the line m-m of FIG. 4,

[0018] FIG. 6 shows an exploded view of the leg holders and the mounting of FIG. 3.

DESCRIPTION OF PREFERRED EMBODIMENTS

[0019] Before the invention. is described in detail, it is noted that it is not restricted to the respective components of the device and the relevant method steps, since these components and methods can vary. The expressions used herein are intended only to describe particular embodiments and are not used in a limdting manner. Furthermore, were the singular or the indefinite article is used in the description or the claims, this also applies to a plurality of the elements in question, unless the overall context clearly indicates otherwise.

[0020] The Figures and, in particular, FIG. 1 show a foldable chair with three legs 11 which are attached to a seat 10. In principle, more than three legs can also be provided, but with three legs, a stable placement of the foldable chair is ensured. The seat 10 is fastened with sleeves on hearing bushings 19 provided on the legs 11 and can be removed from the legs 11 if required. The legs 11 have foot sleeves which are placed over the ends of the legs at the lower end 18 thereof. Preferably, the legs 11 are configured to have multiple parts and, in the exemplary embodiment, consist of an upper leg part 11a and a lower leg part 11b which is mounted longitudinally displaceably in the upper leg part 11a. In order to fix the leg parts in the respective positions thereof relative to one another, a detent pin locking arrangement 17 according to FIGS. 1 and 2 is provided.

[0021] In order to connect the legs 11 to one another, each leg 11 has a leg holder 12 which is mounted spaced apart from the seat 10 according to FIG. 1. This spacing from the seat 10 or the arrangement of the leg holders along the legs is essentially at approximately the same height on each leg and preferably at approximately the middle of the legs 11. Each leg holder 12 has a connecting element by means of which the leg holder is connected to the leg holders 12 of the other legs 11. By means of the connecting elements, the legs are mounted movable relative to one another at a mounting 13 so that the legs can be moved, for example, from the position according to FIG. 2 into the position according to FIG. 1.

[0022] The leg holders 12 have a formed-on part 12a as the connecting element, wherein the formed-on parts 12a are rotatably mounted. between the legs 11 in the mounting made from moulded parts 13a, 13b. The construction with moulded parts results in a high degree of stability and the rotatable mounting simultaneously reduces the level of wear to which the formed-on part 12 is subject in the moulded parts 13a, 13b and to which also the moulded parts are subject.

[0023] According to FIGS. 3 to 6 and, in particular, FIGS. 5 and 6, the mounting 13 consists of two moulded parts 13a, 13b, which are connected to one another at a joint site 13c. In the region of this joint site, there are provided recesses 14 for receiving the formed-on parts 12a of the leg holders 12. Said recesses 14 are formed in that, as shown in FIG. 6, in particular, the moulded parts 13a and 13b each have semicircular openings which, in the assembled state, provide the recesses 14. Undercuts 14a are provided behind. the recesses 14.

[0024] As FIG. 5 shows, the formed-on parts 12a have a post 12b projecting from the leg holder 12, said post merging, at the distal end thereof, into a circular nipple 12c extending transversely to the post and beyond the diameter of the post. The circular shape is preferred because, in this way, the rotatable mounting in the moulded part 13a, 13b can be effectively executed. In the operational state, the nipple 12c lies in the recesses 14, specifically in the undercuts 14a. In the assembled state of the mounting 13 formed by the moulded parts 13a, 13b, the recesses 14 are formed circular and with play, and are complementary to the formed-on parts 12a with the circular nipples 12c, so that a reliable mounting able to withstand loading is provided.

[0025] In order to achieve the assembly according to FIG. 6, the formed-on parts 12a of the three leg holders 12 are inserted into the lower moulded part 13b. The upper moulded part 13a is then placed thereon, which is achieved easily and in a self-centering manner, due to the round shapes. The two moulded parts 13a, 13b are connected to one another by a screw fastening which, in the exemplary embodiment, is provided by the screw 15 and the nut 16. If required, a thread can also be provided in the moulded part 13b into which the screw 15 is fixed. Alternative connecting mechanisms such as latching mechanisms are conceivable. The central screw 15 only holds the moulded. parts 13a, 13b together to form the mounting 13, whereas the actual dynamic forces which arise when the chair is used are conducted via the recesses 14 provided with the undercut 14a into the hemispherical moulded parts 13a, 13b. The screw 15 itself is barely loaded. However, the forces arising can be absorbed in the spherical cage formed by the moulded parts 13a, 13b. At the same time, the formed-on parts can be moved easily but precisely in the recesses 14. The moulded. parts 13a, 13b are essentially identical and possibly complementary in the Mint region.

[0026] The leg holders 12 have, at the upper and lower ends thereof, two openings 12d, 12e for accommodating an upper leg part 11a and a lower leg part 11b. A first of the leg parts comprising the upper leg part 11a and the lower leg part llb is fixed onto the leg holder 12 and at least this leg part is hollow. The other leg part is accommodated longitudinally displaceable axially within the first leg part. Preferably, the upper leg part 11a is the first leg part: which is fixed onto the leg holder 12 and the lower leg part 11b is fixable relative thereto by means of a detent pin locking arrangement 17 and is thus mounted movable relative thereto and therefore also adjustably, on the upper leg part 11a.

REFERENCE SIGNS

[0027] 10 Seat

[0028] 11 Leg

[0029] 11a Upper leg part

[0030] 11b Lower leg part

[0031] 12 Leg holder

[0032] 12a Formed-on part

[0033] 12b Post

[0034] 12c Nipple

[0035] 12d, 12e Opening

[0036] 12f Fixing lug

[0037] 13 Mounting

[0038] 13a, 13b Moulded part

[0039] 13c Joint site

[0040] 14 Recess

[0041] 14a Undercut

[0042] 15 Screw

[0043] 16 Nut

[0044] 17 Detent pin locking arrangement

[0045] 18 Foot sleeve

[0046] 19 Bearing bushing