DE1078304B - Four-legged tubular steel chair, the leg frame of which consists of two U-shaped bent tubular pieces - Google Patents

Description

GERMAN

The invention relates to a four-legged tubular steel chair, the leg frame of which consists of two U-shaped bent, tube pieces each forming a fore leg and hind leg leg, whose bar tube parts angled against each other in a junction, for example below half of the seat plate center, are firmly connected to each other and in their plane a one-piece tubular support for the back support is attached.

It is known to fasten the pipe support behind the node on the leg frame. The pipe support is in the known chairs an upwardly open U-shaped bracket, its upright standing V-shaped bracket piece that connects the legs and is bent into the plane of the tube parts of the junction is screwed or welded to the horizontal tubular parts.

In contrast, in the case of the subject matter of the invention, the free end of the single tube support is welded between the two web tube parts, running parallel to them. Thus the invention goal is reached, the production ereinfachen a chair of tubular steel construction to \ ^r and to improve the resilience of the back support. The advantage here is that the node and the pipe support connection can be produced in a single operation. In addition, in the subject matter of the invention, the back support is supported more elastically on the leg frame than is the case with known tubular steel chairs. The tubular support, which is designed as a torsion spring, springs slightly, both around the axis of its upright leg and around the axis of its horizontal leg. Finally, the part of the tube support that traverses the junction causes the junction to be stiffened on the leg frame.

In a further embodiment of the invention, a protruding forward over the two tubular parts is used Part of the pipe support as a support for the seat plate, so that the arrangement is particularly simple a known three-point mounting of the seat plate and thus also an improvement in the Suspension of the seat plate is enabled. The seat plate can, preferably with interposition known per se of rubber buffers, in front in the symmetry plateau of the chair on the extension of the tube beam and be attached to the back of the bars, near the angles to the hind legs.

Furthermore, according to the invention, the welded-in pipe support should consist of a short, straight piece of pipe, in the cavity of which the free end of the pipe section carrying the backrest is inserted or but in which an additional holder for a known bending bar spring carrying the backrest is arranged so that the backrest can be quickly inserted or replaced. With that comes the Four-legged tubular steel chair,

whose leg frame consists of two U-shaped

bent pipe pieces

Applicant:

Albert Spieth,

Esslingen / Neckar-Obereßlingen,

Plochinger Str. 156,

and Rudolf Spieth,

Esslingen / Neckar-Oberhof 10

Albert Spieth, Eßlingen / Neckar-Obereßlingen,
has been named as the inventor

Subject of the invention counteracts the desire that not only the seat plates, but also the back supports this type of chair are interchangeable, with the leg frame only having to be available in a single version in the store.

The drawing illustrates some exemplary embodiments of the subject matter of the invention. Show it

Fig. 1 and 2 are schematic diagrammatic views of a chair,

Fig. 3 and 4 show a node of the embodiment according to Fig. 1 and 2, partly in section.

The leg frame consists essentially of the two U-shaped bent tube sections 10, the web of which tubular parts 1 b in a known manner in the horizontal V-shaped angled. The tube support 4 for the back support 7 is welded between the web tube parts 1 b. Rubber buffers 2 support the seat plate 3 on the leg frame.

According to FIGS. 1 and 3, the carrier 6 of the back support 7 is inserted into the tubular carrier 4 and firmly connected to the pipe support 4 by the weld bead 5.

In the subject of Figs. 2 and 4, the bolt 8 a, which carries the holder 8, is inserted in the pipe support 4. The piece of steel wire 9 is clamped to this as a support for the backrest 7. The bolt 8 α is secured in the pipe support 4 by pins 10.

Claims (5)

Patent claims: 1. Four-legged tubular steel chair with two U-shaped bent legs, one each Fore and hind legs forming tubular 909 '767/91 pieces consists, the mutually angled tubular tubular parts in a node, approximately below the center of the seat plate, are firmly connected to each other and in their plane a one-piece Tubular support for the back support is attached, characterized in that the free end of the one-spar Pipe support (4) between the two tubular parts (1 &), running parallel to them, is shrink-wrapped. 2. tubular steel chair according to claim 1, characterized ge ίο indicates that a part of the pipe support protruding to the front via the two web pipe parts (16) (4) serves as a support for the seat plate (3). 3. tubular steel chair according to claims 1 and 2, characterized in that the seat plate (3), preferably with the interposition of rubber buffers (2), which is known per se, in the front Symmetry plateau of the chair on the extension of the pipe support (4) and at the back on the webs, near the bends to the rear legs (1 ä) . 4. A tubular steel chair according to claims 1 to 3, characterized in that the welded-in pipe support (4) consists of a short, straight pipe section, in the cavity of which the free end of the pipe section (ia) carrying the backrest (7) is inserted. 5. tubular steel chair according to claims 1 to 3, characterized in that the welded Pipe support (4) consists of a short, straight piece of pipe in which a holder (8) for a The flexible rod spring (9), which is known per se, is arranged to carry the backrest (7). Considered publications:
French Patent Nos. 881 407, 981 092; U.S. Patent No. 2,539,919. 1 sheet of drawings