DE2420446A1 - EMERGENCY SEAT - Google Patents

Description

2420448

dipl.-ing. a. Grünecker -> r.-in'g. H. kinkeldey DR.-ING. W. STOCKMAIR, Ae. E. (caurinst.oftechn) PATENT LAWYERS

DR, K ₁ SCHUM -.'- ·. "■ 4N ··. ■: - <■ - · '* f AKCu

BOOO MÖNCHEN 22 MaximilianslraOe 43 Telephone 2971 00/296744 Telegram Monapat Munich Telex 05-28380

PH 8056-18 / kl 2 April 6, 1974

Dr. A. Beck
8080 Irirstenfeldbruck, Sudetenstr. 11

Fatigue-free fit

The invention "relates to a fatigue-free seat by forcibly changing the seat position by means of deformations of the seat surface and with recurring time intervals and caused by devices"
a belt system of interacting backrest surface according to patent (patent application P 23 39 069.4-).

S09848 / 0482

A "fatigue-free seat of this type, e.g. for motor vehicles, "is based on the knowledge that" with longer lasting sitting position practically without any postural changes that affect your spinal column discomfort The cause is the overloading of the individual movement segments of the spine and the supply disruption of the intervertebral discs. Therefore, even orthopedically designed seats can only relieve these spinal problems for a short time Prevent time, because when sitting, even with correct orthopedic support of the upper body, the load on the individual movement segments continue as before. By the unchanged sitting position and thus the constant position of the spine can have a pumping effect do not take place in the intervertebral spaces containing the intervertebral discs, so that accordingly also not the intervertebral discs can be supplied accordingly.

To avoid such spinal complaints is therefore According to the main patent, the aforementioned and explained fatigue-free seat has been created in which by its design automatically changes the curvatures of the spine without the user having to do anything, since the in certain time intervals recurring and by the Devices caused movements of the seat and backrest surface on the body organs impaired by the sitting posture and counteract any fatigue. This success is essentially achieved thereby been that, for example, the Eückenlehnflache im The lumbar and chest area of the seated person and thus also the corresponding area of the spine is arched forward. At the same time, the belt system, which consists of two suspender-like shoulder straps, enables the Shoulders by means of a flow medium

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beat en device or by mechanical means "causes. File can by the preferably pneumatically acting device for tensioning the belts, the arching of the backrest surface in the area of the chest is made possible at the same time. Furthermore, the seat surface can also be deformed by other devices, with the seat surface movement acts by lifting on the thighs of the seated person. All of these brought about by the appropriate devices Deformation movements of the seat and backrest surface can be set automatically in adjustable time intervals !! are carried out, but the design of the devices can be carried out in different ways.

In contrast, the object of the invention is to be achieved, the fatigue-free seat by forcibly changing the Sitting position by means of recurring in adjustable time intervals and deformations caused by special devices the seat surface and the backrest surface, which interacts with a belt system, according to the patent (patent application P 2J 39 069.4) so that the deformation system for the seat with simple assembly of the devices and little operating effort in a few simple steps can act automatically on the sitter according to the anatomical requirements.

According to the invention, this object is achieved in that the devices are formed by elastically stretchable hollow bodies are that are connected to a hydraulic or pneumatic pressure medium source and that their deformation sequence in the seat and in which a belt system having Backrest surface with regard to frequency, amplitude and sequence by means of a programmable control device is adjustable.

848/0482

In particular, the training can be carried out so that the control device for a constant Pressure-having pressure medium source from a valve unit distributing the flow medium to the hollow bodies and from another valve unit from expansion valves is formed for the hollow body, and that both valve units are electrically controllable by means of a pulse generator, which in terms of frequency, amplitude and sequence of deformation movements Programmable according to the type of setting of the program sequences of an electrically controlled washing machine is. The pulse generator can be used to manually adjust or adjust the frequency and amplitude of the deformation movements have two externally operable control organs. Furthermore, in the case of a hydraulic pressure medium source, the outflow side is of the valve unit consisting of expansion valves connected to the suction side of the pressure medium source by a pipe or hose line. But it can also be the pressure of the Pressure medium source for causing the deformation movements of the Hollow body can be changed by a programmed timer be. The control device can also be designed in such a way that the deformation movements of the seat surface and The backrest surface can be adjusted separately from one another. in the the rest is the belt system used for shoulder retrieval In addition to two suspender-like shoulder straps, it is also formed by a pelvic strap that holds the shoulder straps apart stiffened at the front between these or designed as a cross bracket and optionally provided with a belt buckle. A narrowing of the chest organs should be avoided by spreading the shoulder straps with the shoulder retraction.

By these measures, for example, the driver of a motor vehicle during long journeys as a result of the movement game the hollow body achieves a continuous change in the curvature of the spine, through which

/ 0482

cramps and pain are prevented. Simultaneously becomes a mild one due to the deformation movement, in particular of the backrest surface, without any action on the part of the seated person Massage of the thick muscles allows. It is only necessary if only the sequence of deformation movements of the hollow bodies is programmed on a program board is, by means of the hand-operated control elements of the pulse generator for the seat or backrest area or for "both the frequency and the amplitude of the deformation movements to deliver. As devices for the deformation movement Serving hollow bodies are simple structures that are economically manufactured and incorporated into the upholstery of the backrest and Seat can be installed so that the fatigue-free seat designed according to the invention is purely external does not differ from a normal seat. The economy of the entire seat can thereby be increased if in a space-saving manner the valve units and the pulse generator closed together to form a structural unit and the flow medium of an already existing hydraulic or pneumatic pressure medium source, for example, from a possibly assigned motor vehicle, aircraft or the like.

An embodiment of the invention is shown purely schematically in the drawing. Show it:

Fig. Β an indicated in dash-dotted lines

View of the backrest surface of a seat with built-in 2_ hollow bodies that interact with a pressure medium source via a control device,

Fig. 'Jf a graphical representation of the deformation sequence of the hollow body with simultaneous shoulder retraction,

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" ^G " 2420U6

3 L

Fig. P one of the pig. / corresponding representation with

a changed amplitude and! frequency of the ^. Deformation sequence,

Fig. Si the front view of the belt system for pulling back the shoulders.

From the embodiment explained below "example one Seat is only the outline of the backrest surface 20 in dash-dotted lines to illustrate the invention shown schematically. The seat can be designed as a simple chair or with an upholstered seat and backrest surface be like such seats "are common, for example, in motor vehicles or airplanes To avoid immobile sitting and to avoid symptoms of fatigue, both in the seat area are special as well as devices arranged in the backrest surface forced a change in the sitting position.

According to the invention, the devices built into the backrest surface in the exemplary embodiment are formed by elastically stretchable hollow bodies 21, 22 and 2J> . Here, a hollow body 21 corresponding to its size is provided for each shoulder area, furthermore, symmetrically to the longitudinal center of the backrest surface, an elongated hollow body 22 extending in the longitudinal direction over the back and below this a further hollow body 25 covering the lumbar or pelvic area, each Hollow body has approximately a shape and size corresponding to the assigned area. In approximately the same way, the seat surface can also be designed to act on the thighs and the pelvis of the seated person.

In order to bring about a change in the sitting position ₍ in a simple embodiment, the hollow body can be attached to a

509848/0482

Pressure medium source with constant or variable pressure can be connected by pipe or hose lines. If the pressure of the pressure medium source is variable, it is controlled according to a specific time program. When the pressure rises, the hollow bodies supported on their rear side are arched forward _{s in an} elastically flexible manner. When the pressure drops and, if necessary, as a result of the controlled outflow of the flow medium, the hollow bodies automatically return to their original position due to their elastically stretchable material.

An already existing hydraulic or pneumatic pressure medium source 24 is preferably used for loading the hollow body 21, 22 and 23 used, such as such for example is already provided in motor vehicles or airplanes. However, such a pressure medium source has predominantly constant pressure. The flow medium is in this case electrically controllable via a distribution device that is used for distribution Valve unit 25 through pipes or hoses 26 the hollow bodies 21, 22 and 23 supplied. To regulate the The hollow bodies are also under pressure on a further electrically controllable valve assembly 27 of the control device connected, which essentially consists of ± decompression valves consists. Finally, the control device also has a programmable electrical pulse generator 28, by means of electrical lines 29 to the two valve units 25 and 27 corresponding to the one inserted by one Acts program board 30 tapped pulses. The programming the program table 30 can do all deformation movements of the two shoulder hollow bodies 21, the back hollow body 22 and the lumbar hollow body 23 as well as the sequence the individual deformation movements and their control in terms of their frequency and amplitude. The entire sequence of a movement game of the hollow body can

5G9848 / CH82

thus according to the type of setting of the program runs Scanning a program table by a timer electrically controlled washing machine. However, there can also be one in the pulse generator 28 for all hollow bodies externally operable control element 31 for the frequency and a further control element 52 is provided for the amplitude so that the frequency and amplitude of a motion game is the same for all hollow bodies. on the other hand but it is also possible to set the frequency and amplitude for each hollow body by means of a special regulating element to adjust. The training can also be carried out in such a way that the deformation movement of the seat surface and the backrest surface can be set separately from each other.

Furthermore, the outflow side of the is essentially off electrically controllable voltage valves of existing valve units 27 is connected to the suction side of the pressure medium source 24 by a pipe or hose line 33. Such Connection is only provided when using a hydraulic flow medium. However, compressed air serves as the The flow medium escapes from the expansion valves into the open air to reduce the pressure in the hollow bodies.

A belt system is provided as a counter support so that the hollow bodies 21, 22 and 23 can act fully on the seated person and cause a change in the curvature of the spinal column, see FIGS . It consists of two shoulder straps 34- * designed as hoist rager straps which run vertically or even slightly outwardly downward from the shoulders on the front of the upper body and thus neither restrict breathing nor the female chest. In order to keep them in this position, the shoulder straps are held at the level of the pelvis by a lap strap 35, which is used to

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ensuring the distance between the shoulder straps 34 is stiffened between the shoulder straps at pelvic height or is designed as a cross bracket J6. If necessary, the belt lock 37 can also be provided in the transverse bracket and the transverse bracket itself can be designed as a two-point or four-point lock. The stiffened cross strap or cross bracket J6 prevents the shoulder straps from striving together and ensures the free function of the chest organs. Incidentally, a device acting on the shoulder straps is also provided in the belt system designed according to the invention, as in the main patent, which device can be designed as an elastically stretchable hollow body and causes the shoulders to be retracted and rounded during the course of the deformation movement.

The deformation movements of the backrest surface of a seat, which can be carried out with a fully programmed program table yO and brought about by means of the explained control device, are in chronological order of the individual

2. 3 hollow body movements shown in Figs. / And f> on a time line with an approximately the duration of a movement of the game corresponding abscissa shown as half-wave, with about 10 minutes have been chosen for the duration of a movement play. The arrow height of the half waves is the amplitude of the respective hollow body movement. The hollow lumbar body has been designated with L, the hollow back body with R, the hollow body or bodies for the temporal tension of the shoulder straps with G and the shoulder hollow body with S. When in Fig jf. Programmed succession first the deformation occurs of the lumbar hollow body L, then with a minute distance in succession, the deformation of the seat hollow body R and the shoulder hollow body S at an interim voltage of the shoulder belts by the Gurthohlkörper G for retrieval of the shoulders. With all deformation

503848/0482 - 10 -

movements of the four hollow bodies have the same frequency and amplitude. If the pulse generator is appropriately equipped with a regulator element for the frequency and amplitude of a hollow body, these can be different from one another during a play of movement of the hollow bodies, as indicated in dashed lines in FIG.

Fig. Β shows a corresponding representation of a play of movement of the four hollow bodies with a changed sequence of deformations. The frequency and the amplitude are also the same as one another, but different from the previous exemplary embodiment. When the hollow back body II is deformed, the hollow belt body is also deformed at the same time. Of course, with the appropriate design and programming of the pulse generator, the frequency and amplitude of the individual deformation movements can also be set differently within a movement game in this exemplary embodiment.

509848/0482

Claims (7)

2420U6 Claims Fatigue-free seat by forcing the zposition by means of deformations which recur at adjustable time intervals and are caused by devices of the seat and interacting with a belt system Backrest area according to patent (patent application P 23 39 069.4-)} characterized in that the Devices of elastic .dehnbaren hollow bodies (21,22,23) are formed, which are attached to a hydraulic or pneumatic Druclaaittelguelle (24) are connected, and that their deformation process in the seat surface and in the backrest surface (20) having a belt system with regard to frequency, Amplitude and sequence by means of a programmable Control device (25.27-28.30) is adjustable. 2. Seat according to claim 1, characterized in that that the control device for the pressure medium source (24-) having a constant pressure the valve unit (25) distributing the flow medium to the hollow bodies (21, 22, 23) and from a further valve unit (27) is formed from expansion valves for the hollow body, and that both valve units (25 and 27) by means of a pulse generator (28) are electrically controllable in terms of frequency, amplitude and sequence of deformation movements is programmable according to the type of setting of the program sequences of an electrically controlled washing machine. - 12 509648/0432 3 · Seat after. Claim 2, characterized in that that for manual specialist "or setting of frequency and amplitude of the deformation movements of the pulse generator (28) at least two externally operable Hegel organs (31 j32). 4. Seat according to claims 1 "to 3 _? Characterized in that" in the case of a hydraulic pressure medium source (24-) the outflow side of the valve unit (27) consisting of expansion valves "through a pipe" or Hose line (33) is connected to the suction side of the pressure medium source (24). 5 · Seat according to claim 1, characterized e t that the pressure of the pressure medium source to cause the deformation movements of the hollow body (21,22,23) through a programmed timer can be changed. 6. Seat according to claims 1 to 5i, characterized in that the control device is designed is that the deformation movements of the seat and backrest surface (20) can be set separately from one another are. 7. Seat according to claim 1, characterized in that that the belt system except for two suspender-like Shoulder straps (3 ^ -) are also formed by a lap belt (35) is, the stiffened to the spacing of the shoulder straps at the front between them bzxf. designed as a transverse bracket (36) and is optionally provided with a belt lock (37). Blank page