DE8609844U1 - Armchair with adjustable backrest - Google Patents

Description

"- 2 '* -

Description:

Armchair with adjustable backrest

The present invention relates to an armchair with adjustable Backrest having a frame for receiving the backrest articulated to the seat while the seat is movable is mounted in a part of the frame forming guide with a device for manual blocking of the adjustable seat is provided.

Armchairs of the type described are commonly referred to as "reclining back chairs".

A major difficulty in making such armchairs consists in the production of the seat guides, which usually consist of two rails arranged on the side of the seat, for their Production of suitable materials and corresponding molds are required, the high manufacturing costs of which are quite considerable affect the end pruis of the armchair.

The present invention is based on the task, an armchair to be designed with an adjustable backrest in such a way that the high manufacturing costs associated with the prior art are reduced will.

This task is renewed by an armchair with adjustable Backrest released, which is characterized in that the 'Sitzführüng' consists of a bush attached to the frame under the seat consists, in which a rod belonging to the seat is movably guided, which bent away from the seat in the direction of the backrest I

is »I

Further features and related advantages can be found in the following- |

from the description of a newly developed SSsSeIS, ρ

which is shown in the drawings. |

It show: %

Fig. 1 is a perspective view of a construction detail of the chair designed according to the innovation and

2 and 3 show the side view shown on a reduced scale of the newly designed armchair in two different positions of the backrest.

In the drawings, an armchair is designated by (1) ^ its frame (2) consists of a pair of parallel feet (3) from which a spar (4) develops.

Each spar (4) forks into two arms (4a) and (4b), the one in the upper one Area are connected by a cross member (5) forming the armrest of the chair (1).

The armchair (1) further comprises a backrest (6) and a seat (7), both in a manner described in more detail below in the Frame (2) are supported.

The backrest (6) consists of an upholstered pad (8), Rigid skeleton, not shown, and is rotatably hinged to the arms (4b) of the spars (4) by bolts (9).

it * ■ · * »a

The seat (7) is hinged along the side (10) to the backrest (7) and consists of a rigid framework (11) made of curved Meta tubes, which is covered with a pad (12).

A tube (13) of the framework (11) is on the opposite side from the side (10) Side a rod (14) welded in the middle, which runs under the seat (7) at a right angle to the tube (13) *

The free-standing end of the rod (14) is towards the feet (3) bent away from the seat (7) towards the backrest (6).

A tubular bushing (16) is between the arms (4a) the spars (4) welded to a tubular metal strut (18).

A plastic sleeve (19) is inserted into the socket (16) in which oil rod (14) is movably guided with appropriate radial play.

The socket (16) forms the holder and guide for the situ (7) in the frame (2) * It is designed with an incline that allows movement ™ possibility of the rod (14) guaranteed.

The rod (14) can be blocked by hand by a device (20) will. The device (20) comprises a rod-shaped component (21), which is outside the area of the bars (4) with a rotary handle (23) and at its opposite end with a thread (22) is provided with which it is screwed into a threaded insert (24) located in the metal cross member (18) in the region of the socket (16) is, the thread (22) through the bushing (16) and the plastic sleeve (19) into a radial bore, not shown intervenes.

The weight of a person sitting on the armchair (1) becomes main received by the bolt (9) and to a lesser extent via the rod (14) through the bushing (16).

The bend of the rod (14) and the corresponding inclination of the sleeve (16) cause the rod (14) essentially by Kompres ^ sion forces is loaded, so that their dimensional design in keep reasonable limits.

By loosening the rotary handle (23) of the device (20) the rod (14) freely movable inside the plastic sleeve (19) so that by shifting your weight accordingly on the backrest (6) or on the seat (7) via the bolts (9) an adjustment of the backrest (6) from the upright position shown in FIG. 2 to to the inclined position shown in Fig. 3 can be brought about.

The seat (7) moves in the area of the side (10) in a curved manner Course direction, whereby it remains centered by the bolts (9) while the rod (14) moves in the socket (16).

After the desired sitting position has been reached, the seat and backrest ^ backrest blocked by screwing the thread (22) into the threaded insert (24) against the rod (14).

\ The seat guide according to the agreement can be made entirely of welded

Röhrteilen be carried out so that neither besonderse materials \ j [ioc: h molds are required and the manufacturing costs low

can be held. Furthermore, the seat guidance is characterized by \

AhXe simple design that is not susceptible to wear or repair the end.

Claims (2)

1. Armchair with adjustable backrest, characterized in that that the seat guide consists of a bush (16) attached to the frame (2) under the seat (6), in which one to the seat (6) belonging rod (14) is movably guided, which is bent away from the seat (6) striving towards the backrest (7), wherein the seat guide can be blocked by a device (20) by hand as soon as the desired position of the Backrest (7) is reached. 2. Armchair according to claim 1, characterized in that the socket (16) with a radial bore for receiving a rod-shaped Component (21) of the device (20) is provided, via which the rod (14) is blocked.