DE2912565A1 - HEIGHT-ADJUSTABLE FURNITURE - Google Patents

Description

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Landstingens Inkopscentral LIC ekonomisk förening Svetsarvägen 20 S-I71 41 Solna / Sweden

Height-adjustable seating furniture

909840/0844

DR.-ING. EUGEN MAIER DR.-ING. ECKHARD WOLF PATENT LAWYERS DRESDNER BANK AOt TELEPHONE (0711) 242701/2 ITUTTOART NO. 1I9OM4 TlLORAMMt: MENTOR 7 STUTTSART 1, PlSC H E K STR. 19 POSTSCHECK ST * T. aaaOO-70 »

A 12 312 March 26, 1979 i - kt

Landstingens Inköpscentral LIC ekonomisk förening
Svetsarvägen 20
S-I71 41 Solna / Sweden

Height-adjustable seating furniture

description

The invention relates to a height-adjustable chair, the column base of which forms the parts of a gas suspension and which has the features listed in the generic term of claim 1. Such a piece of furniture is known from DE-OS 1,900,949, for example.

In this known seating the control element consists of a sliding sleeve mounted on a plate which actuates a lever when depressed, the actuating a valve control rod acts.

909840/0844

A 12 312 March 26, 1979 i - kt

This disk is arranged above the arms of the foot cross and can therefore only be pressed down to the level of the arms of the base. The one on the seating seated person only has one foot in contact with the floor when such an adjustment device is operated, while the disk acting on the adjustment device is depressed with the other foot. at this position of the legs, which is somewhat unusual when sitting on a stool, is where the body is on the The person sitting on the stool is out of balance, which creates a feeling of insecurity.

The feeling of such insecurity, which is caused by sitting more or less on one side, is also felt by a person with the seating furniture according to US Pat. No. 3,143,332, in which the one to be operated can be tilted. Ring arranged above the pedestal let

However, such an imbalance when sitting and also when standing leads to a considerable increase in the risk of often disastrous consequences for people who perform very precise and sensitive manual activity, such as doctors or nurses.

The invention is therefore based on the object of improving seating furniture of the aforementioned type in such a way that a seated person can also adjust the height of the seat.

909840 / 08.44

BATH ORIGINAL

.y.

A 12 312

Rait both legs touching the ground and thus completely is in equilibrium.

This object is achieved according to the invention in that the seating furniture has those features which are listed in the characterizing part of claim 1. When adjusting the seat, the foot actuating the tiltable control element is in contact with the floor and thus assumes the normal position when sitting on a stool or stool, so that the person concerned can easily perform any manual operations. A further advantage of the construction according to the invention is that the tiltable control element, preferably a hoop or an annular disc, is arranged at such a height that only the heel needs to be raised slightly in order to move the heel of the shoe over the hoop or the edge the washer while the forefoot can remain on the floor.

In the drawing, an embodiment of the subject invention is shown in a schematic manner. Bs show

1 shows a perspective illustration of a stool , seen obliquely from below;

2 shows a side view of a part of the base with the middle part receiving the organs of the adjusting device, in section.

909840/0844

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The seat plate 10 of the stool rests on the cylinder 11 in which a piston connected to the piston rod 12 is arranged. The cylinder, the piston and the piston rod form a common gas suspension that works when the The valve acts as a locking mechanism and allows the seat to be adjusted in height when the valve is open. The valve is opened by a control rod 13 guided in the piston rod 12.

The piston rod 12 of the column foot forming the gas suspension is connected to a housing 14 on which the at a distance from the floor 16 arranged arms 15 a Base are attached, which have non-slip caps 17 at their ends.

At the lower end 14a of the cylindrical housing 14 is an inner shoulder forming annular flange 19 is provided on which a pressure disc 18 rests against the annular flange 19 is pressed by means of a spring 20. Between the thrust washer 18 and over the lower end of the piston rod 12 protruding end of the control rod 13 is an axially displaceable cylindrical plunger 21 is arranged.

As can be seen from Fig. 2, the thrust washer 18 can be pivoted into an inclined position shown with dot-dash lines. When transitioning into this inclined position

909840/0844

A 12 312

the middle area of the pressure disk 18 is raised and moves the plunger 21 upwards, which in turn moves the control rod 13 upwards into its operative position , in which it opens the valve of the gas suspension and thus enables the height of the seat 10 to be adjusted.

On the thrust washer 18 a plurality of radial arms 22 are welded, with which the ring 23 concentric to the piston rod 12 is connected.

As can also be seen from Fig. 2, the hoop is arranged between the floor IS and the arms 15 of the base at only a small height iibar the floor, so that the hoop 23 at any point with only slightly raised

f.

Heel or the heel of a shoe on the floor depressed -weräan can verl'.Viibt NND in this inclined position until ä x & seat in the r; e & ewüzisch farms © w, g @ l% obmn

Claims (2)

DR.-ING. EUGEN MAIER DR.-ING. ECKHARD WOLF PATENT LAWYERS TKLKSITAMMKlMBNTOlR 7STUTTaARTI, PISC H g KSTR. 18 POSTSCHKCK »ΤβΤ. 38300-70 » A 12 312 March 26, 1979 i - kt Landstingens Inköpscentral LIC ekonomisk förening
Svetsarvägen 20
3-171 41 Solna / Sweden Height-adjustable seating furniture Claims / lJ Höli «nv« x »te: Ubarea seating furniture with a gas spring formed as a column base, the cylinder of which is the seat plate® and the piston rod is connected to a multi-armed foot“ cross ”with an axially movable one that is guided in the piston rod Control rod, on whose actuation ~ «in © β ring or« in disk by means of » FuD« a «St« U9V «tang * lifting force ttutff« ill »tw £ ir4» «Od * ß 9098A0 / 0844 BAD ORIGINAL A 12 312 March 26, 1979 - 2 - i - kt this in its operative position, a valve disposed in the piston rod valve for the purpose of height adjustment doe seat opens, wherein the foot-ring or washer is arranged concentrically to the piston rod and tiltably supported by any directions, characterized in that the tiltable "member (23) in a such a height is arranged between the floor (16) and the arms (15) of a base that it touches the floor (16) when the control rod (13) is raised into the operative position. 2. Seating furniture according to claim 1, characterized in that the tiltable member (23) is connected to a disc (18) which, under the restoring force of a spring (20) against an inner ring shoulder (19) of a housing connected to the piston rod (12) (14) and when the transition into the tilted position, the control rod (13) raises directly or indirectly into the operative division. 909840/0844 BATH ORIGINAL