Adjustable lumbar support

Abstract

Adjustable lumbar support comprising a frame consisting of two horizontally arranged side plates, two vertically arranged outer plates and two vertically arranged inner plates, the inner plates having slots, and an adjustment arrangement comprising a screw nut, a screw and a rivet nut, and further comprising a stop, wherein the adjustment arrangement is movable by moving the screws in the grooves of the inner plates and by turning the wing nut, and is also configured to be fixed relative to the inner plates by pressing the inner plates onto the washers when tightening the screws, wherein the stop consists of curved metal plates, a plug, clamps, screws and straps.

Description

[0001] The utility model refers to the field of office and home furniture, namely devices for creating comfort during long-term operation of the computer and for the prevention of diseases of the musculoskeletal system.

[0002] For mounting on backrests (RU 20289, IPC A47C 7 / 46, B60N 2 / 00, publ 27.10.2001 d) with a cushion, an element for attachment to the backrest, which is reclined by the upholstery. The cushion is inflatable and equipped with an autonomous pumping device.

[0003] The disadvantage is a small range of adjustment of the position and the degree of support

[0004] A chair is known (RU 29641, IPC A47B 39 / 00, A47V 39 / 10, A47V 39 / 12, publ 27.05.2003 d) includes a seat and its support, a backrest with a movable stop preferably for the lumbar spine (lordosis), equipped with a parallelogram mechanism connecting the stop to the backrest of the chair - the possibility of vertical adjustment of the stop in the lumbar zone, the position of the correct posture "sitting" of a particular person, wherein the stop is fixed by means of a rigidly connected shoe on the upper axis of the parallelogram mechanism and is equipped with a regulator of an angle of inclination of the stop and a limiter of its movement, - a parallelogram mechanism located in the slot in one of the sides of the parallelogram mechanism.

[0005] The disadvantage is that the stop can be attached strictly at specific points (circumference of the circular sector) during vertical adjustment.

[0006] The technical task of the utility model is to provide a lumbar support that can be mounted on the backrest frame and provides position adjustment over a wide range.

[0007] The technical result is to provide support for the waist by placing it evenly on the back of the user against the back of the chair

[0008] The task and the technical result are solved by an adjustable lumbar support with a frame with grooves, according to: which can be moved and fixed in a certain position by the position adjustment unit of the lumbar support, in which the elastic bands are tensioned by turning the screws.

[0009] According to the utility model, the frame can be attached to the frame of the backrest of the chair using a screw connection through the holes.

[0010] According to the utility model, the adjustment assembly can adjust the position of the anvil relative to the backrest padding by turning the wing nut.

[0011] The nature of the model is explained using drawings of an embodiment of an adjustable lumbar support, where Fig. 1a a lumbar pore and in Fig. 1b shows a sectional view of the adjustment unit. In Fig. Figure 2 shows a general view of the seat.

[0012] 2 The adjustable lumbar support comprises a frame 1, which consists of two horizontally arranged plates - two vertically arranged outer plates 3 and two vertically arranged inner plates 4. All plates are connected to each other by a welded joint. The plate 4 has grooves along which the adjustment unit 5 with the stop 6 is moved. The adjustment unit 5 has a carriage 7, a wing nut 8 and a rivet nut 9. The carriage 7 consists of a U-shaped plate 10, a nut 11, a washer 12 and a screw 13. 6 consists of curved metal plates 14, a plug 15, clamps 16, screws 17 and straps 18.

[0013] The use of a screw connection in the connection of the frame 1 and the carriage 7 makes it possible to fix the position of the stop 6 by pressing the plate 4 against the washer 12 while tightening the screw 13.

[0014] The possibility of rotating the jaws 16 with respect to the screws 17 allows the position of the strap 18 to ensure a uniform fit on the back of the chair

[0015] The combination of the adjustment option by means of the wing nut 8 and the nut 11 makes it possible to provide the necessary position of the stop 6

[0016] Thus, the claimed utility model provides a reliable, adjustable lumbar support that can be mounted on the back frame with soft padding and provides position adjustment over a wide range. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited non-patent literature

[0000] IPC A47C 7 / 46, B60N 2 / 00, published October 27, 2001

[0002]

Claims

[1] An adjustable lumbar support comprising a frame consisting of two horizontally arranged side plates, two vertically arranged outer plates and two vertically arranged inner plates, wherein slots are provided on the inner plates, and an adjustment assembly consisting of a screw nut, a bolt and a rivet nut, and further comprising a stopper, wherein the adjustment assembly is movable by moving the screws in the grooves of the inner plates and by rotating the wing nut, and is also configured to be fixed relative to the inner plates by pressing the inner plates onto the washers when tightening the screws, wherein the stopper consists of curved metal plates, a plug, clamps, screws and straps. [2] The adjustable lumbar support of claim 1, wherein the belt tension is configured to adjust the position of the jaws upon rotation of the screws.

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