DE8234997U1 - UPPER CHAIR - Google Patents

Description

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Lifting chair

The invention relates to a lifting chair with a support frame and one that is adjustable by a Hebemi'.chanismus Seat, which is moved during the uprighting movement so that the front edge of which is lifted up and moved forward.

There are different makes of lifting chairs known at where the seat is raised, but not the backrest and armrests. In particular, the British patent 926 156 a lifting chair became known, in which the movement of the seat surface by two pairs of Lever systems is controlled, each comprising ten levers. The backrest and armrests make the ergonomically necessary Movement not with. The lever systems are driven by manual actuation of a hydraulic system. Apart from the high manufacturing costs for the complicated movement elements, it has an effect in practice there is also a not inconsiderable risk of contamination in the event of malfunction-related operational damage to the hydraulic system the end. This cannot be tolerated in living areas.

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The object of the present invention is to eliminate all of these disadvantages and sources of danger by means of a simple, economically justifiable construction, which also allows a backrest that remains upright in any position and to provide arm rests that serve as holding and support aids. I.

According to the invention, this is achieved in that on each side of the seat a seat support extends forward beyond the front edge of the seat and that the seat is rotatably articulated by means of this elongated seat support at a distance from its front edge on the support frame.

Due to this extremely simple construction, the other so far known upright chairs of different origins lever mechanisms used no longer apply. Nevertheless, it is achieved that the front edge of the seat at the Righting movement both forwards and upwards, that a backrest and armrests of the standing up movement can follow how this is constructed from an ergonomically correct one Raising armchair used by its users (seniors and / or slightly disabled people of all ages) in daily use Practice is required.

The seat supports are expediently supported in this way designed so that the seat support, which is extended forwards in the direction of vision of the user, is bent upwards for the seat and are attached to the top of the support frame, so that the axis of rotation of the seat is as close as possible to the pivot points of the The user's knee joints come to rest, which causes a relative movement between the chair seat and the user when standing up is avoided.

Conveniently, a backrest is pivoted to the rear of the seat and at least one M parallelogram rod practically parallel to the seat is provided. In this configuration I, the backrest moves with the seat, but remains <u always in an upright position while in previously known I chairs the backrest remains stationary.

I An accompanying backrest and armrests connected to it

I can lay one for the disabled user of any age

I provide great help - especially for older people,

I no longer in full possession of all their powers

I sonen - an invaluable help and important safety

}: feeling. None of the previously known lifting chairs are all

£ contain these elements. But that remains with these

λ Backrest in zero position despite sitting upright

! in place or, at best, tilts when the seat goes up

H rigidly forward, just like the armrests rigidly with the

; t headquartered and therefore no more than welcome Can serve as a support.

H A is useful for moving the seat and backrest

ψ arranged under the seat and attacking it

ί electric lifting motor provided. This makes one special

j simple construction of the lifting chair.

The lifting motor is expediently operated by a switch

i can be operated, which is located on one of the armrests. this makes the lifting chair very practical to use.

To adapt the lifting chair to the height of the user, means for height adjustment are advantageously provided on the support frame. These funds allow the pivot point of the seat at the height of the knee joint.

An embodiment of the invention will now be described with reference to the drawing.

The lifting chair has a support frame 11 which has means 13 for height adjustment. These funds 13 can for example consist of a bolt which engages in one of the holes (not shown) of the foot 15. The seat 17 is articulated at 19 on the support frame. For this purpose it has elongated seat supports 21, which extends over the front edge 23, which is indicated by a black point, also to the front. While In the example shown, the extensions mentioned only follow the front edge 23 of the seat extend forward, it is useful that the axis of rotation is mounted a little higher so that they are on the same Line on which (usually) the user's knees are located. With such a Training relative movements between the user and the seat 17 when standing up are avoided. At the back of the seat at 25 a backrest 27 is articulated. In addition, there is a parallelogram bar arranged practically parallel to the seat 29 arranged, which is hinged at 31 front on the support frame and at 33 on the backrest to during a movement of the seat 17 to keep the backrest 27 upright. Armrests 35 are arranged on the backrest 27, The lifting motor 37, which is articulated at 39 on the support frame and at 41 on the seat, is arranged under this seat 17. It can be actuated by a switch 43 via line 45. The cable 47 is used to connect the lifting motor to a Power source.

When standing up, the seat 17 and the backrest 27 move from the position shown in solid lines to the location shown with dashed lines. Important

is that the front edge 23 of the seat moves forward and up to the position 23 ". This movement forward. and upward makes it easier for the user the righting movement because it is ergonomically correct. Due to the design of the erecting chair according to the invention and despite the extremely simple erecting mechanism, an ergonomically correct, optimal sequence of movements is achieved and it can be due to a complicated and uneconomical lever mechanism with all the shortcomings outlined above and moments of danger are dispensed with.

Claims (8)

Expectations 1. Lifting chair with a support frame (11) and a through a lifting mechanism (37) adjustable seat (17) which is moved during the righting movement so that its front edge (23) is lifted up and moved forward (23 '), characterized in that on each side of the seat (17) a seat support (21) over the front edge (23) of the Seat (17) also extends forward and that the seat (17) by means of this elongated seat support (21) at a distance is hinged rotatably from its front edge (23) to the support frame (11). 2. Rearing chair according to claim 1, characterized in that that the extended seat support (21) extends over the front edge (23) of the seat (17) to the front and upwards extend and are hinged above the support frame. 3. Raising chair according to claim 1 and 2, characterized in that a backrest (27) is rotatably hinged to the rear of the seat is and that practically parallel to the seat at least one parallelogram rod (29) is provided, the front (31) on the Support frame (11) and below (33) on the backrest (27) is hinged to during a movement of the seat (17) the The backrest (27) can also be moved into the upright position and held in it. I I * lit « ι> ■ ·· ■ · -7- 4. Raising chair according to claim 2 and 3, characterized in that that on the backrest (27) armrests (35) are provided, which together with the backrest the Participate in the uprighting movement and thereby a safe support of the user up to the desired end position guarantee. 5. Raising chair according to one of claims 1 to 4, characterized in that for moving the seat (17) and backrest ^) an electric lifting motor (37) arranged under the seat (17) and engaging it is provided is. 6. Rearing chair according to claim 5, characterized in that that the lifting motor (37) can be actuated by a switch (43) that can be conveniently and effortlessly operated by the user in any position is attainable. 7. Raising chair according to claim 6, characterized in that that the switch (43) is arranged on one of the armrests :. 8. Raising chair according to one of claims 1 to 7, characterized characterized in that a bolt (13) is provided for the height adjustment of the righting chair at the respective foot (15) which engages in one of a plurality of holes in the foot (15).