DE19755894C2 - Static and dynamic footrest - Google Patents

Description

The invention relates to a static and dynamic footrest ze, especially for a prophylactic and therapeutic Use in a sitting position.

Statically, it serves to relax and promote posture It can support the feet and dynamically, in the manner of a Foot rocker can be used for gymnastics. For both functions is an adaptation to body size and sitting posture possible.

It has been known for centuries that suitable footrests for activities performed while sitting, for example reading Writing or doing needlework, for a better and less less stressful posture.

Occupational medicine is not as old and less well known Realization that a static, practically motionless Mandatory, sedentary activity not only limits motor skills and thus the entire musculoskeletal system of the working person, but also the circula tion of the body fluids - the circulatory system Untitled. Of these, the lower extremities are, of course, the Feet and legs particularly affected.

A lack of stress on the feet and legs causes also a considerable nervous tension. To cut this off lead to a spontaneous and often unconscious "vib "or" wiggle "with the legs.

Footrests are known which are either only static or only be used dynamically. Besides, most of them meet not or only partially the requirements regarding egg ner size, height and inclination adjustability, as well as the Resilience according to DIN 4556.

DE 34 32 303 A1 describes a simple, height-adjustable Known footrest. It consists of a footplate, the at four support points using clamping screws in one Frame is arranged adjustable in height. An angle adjuster  is only possible to a limited extent. For a prophylactic and this footrest has therapeutic application Disadvantage that they are used only statically, but not dynamically is cash.

A training device with a dynamically swiveling footplate is known from DE 39 20 236 A1. It serves the promotion blood flow to the lower leg. Apart from that this "foot rocker" is only designed for one foot at a time they have the disadvantage that they are only dynamic Exercise device is usable. For use as a footrest it lacks sufficient stability and the possibility to adapt to different body sizes.

DE 83 23 353 U1 describes an angle-adjustable footrest described in which the footrest plate on one side with a hinge rotatably arranged on a frame and on the other side be at least one vertical rail that sits below the footrest plate with a joint this is connected. Using a pen and several boh The footrest plate is available in different versions of the rail NEN positions in relation to the frame adjustable. Through this Arrangement is a different inclination of the foot platen reached.

This invention is only applicable statically and in addition to the win height adjustment is not possible.

Finally, a footrest is from DE 37 28 717 A1 knows, which consists of a footrest plate on one Frame at four support points using fasteners is adjustable in height and angle. The frame be essentially consists of two side parts, on which the Rear footrest plate, which is preferably the heel side the footplate is in two support points in pages part of the frame is rotatably mounted and the front side te of the footrest plate, which is preferably the toe side is attached via two support points and all attachments  elements at the support points at the front and rear are height and angle adjustable in pairs.

This invention also has the disadvantage that in addition to a height and angle adjustment no movement of the feet possible is.

The object of the invention is a static and dynamic Footrest, especially for a prophylactic and thera to create therapeutic application in a sitting position, which is universally applicable by alternatively, both static as a footrest as well as dynamic as a gymnastic one Exercise machine can be used. It is said to be inexpensive and be easy to manufacture, easy to use different body sizes quickly and easily can adapt and also correspond to a high stability according to DIN 4556.  

The object is achieved with the features of the first Claim solved. Advantageous further developments and improvements Events are the subject of the subclaims.

The static and dynamic footrest exists according to the Er finding a stable frame in which a footrest shelf in four support points height and angle adjustment bar is arranged by means of fasteners.

In an expediently designed version, the frame has flow frame in the form of a tubular frame.

On the back of the frame, which in front of one the seated position is the heel side, is the footrest plate rotatable in two support points in the side parts of the Frame attached. The other, front side is in two support points over elastic elements either flat if left and right ver with the side parts of the frame tied or the two support points on the footrest plate are connected to one another via a kind of triangle or square connection or two points hung in the frame.

The preferred sitting posture is the posture at which the feet are supported forward against the footrest. It a sitting position is also possible, of course, with the feet are angled backwards under the seat. Also in the footrest according to the invention can be used in this position be turned by 180 ° under the seat. In this case, the toes are towards the back the footrest plate and the heels are in place itself on the front resilient side.

The fasteners are at the support points in front and rear height adjustable and guarantee performance of a quick adjustability preferably from plug-in fastening devices with snap action.

The elastic elements are in the front support points preferably arranged such that they are on one side with the footplate a firm but articulated connection form and on their other side by means of the fastening  elements attached to the frame of the frame are.

The elastic elements can be ring-shaped rubber spring elements, rubber bands, spiral springs, specially shaped Leaf springs or gas springs. Depending on their arrangement below or above the footplate, they are on Stressed or tensile.

With the triangular or quadrangular suspension, an endlo ses rubber band used, which on the footrest plate around two pads arranged at a distance and by at least a pad arranged in the middle of the frame ge sets is. By using two fastenings or supports on the frame can also be used in this version a height and angle adjustment of the footrest plate be be acted by the distance between these two conditions other is changed.

In order to ensure that the footrest plate moves more smoothly when moving Rubber bands to enable the pads are in Rollers attached in the form of guide rollers.

In a modification of the static and dynamic according to the invention Mix footrest is also a split footrest plate conceivable, in which both feet moved independently or in static operation with different inclination rates can be put on.

Fastening the back heel of the split foot Platen is conveniently done through a run de axis that on the two outer side parts of the frame is attached to the frame and on which the two footplate th are rotatably arranged.

On the front, springy sides is in the frame a frame between the two foot plates spar arranged, one axis on the left and one on the right leads to the side parts of the frame and the axles connected to the side parts via fastening elements are. These axes are in the same way as for  the undivided footrest plate, the two footrest plates hung at two points using elastic elements.

The auxiliary spar is inserted into the frame so that it at Use of the footrest is not distracting.

Under certain circumstances, the auxiliary spar can also fall away if, how described in the undivided footrest, a three or quadrangular suspension of each partial footplate for Commitment comes.

Advantageous versions of the solution according to the invention described in more detail.

Show it:

Fig. 1a is a schematic side view of the static and dynamic footrest with an unloaded ela-elastic element.

Fig. 1b is a schematic side view of the static and dynamic footrest with a loaded elastic rule's.

Fig. 2 is a three-sided view of the footrest without elastic element.

Fig. 3a shows the arrangement of the elastic element in dynamic operation.

Fig. 3b shows the arrangement of the elastic element in static operation.

Fig. 4 shows a fastening device with a snap action.

Fig. 5 shows the arrangement of the elastic element according to Fig. 3a and Fig. 3b in side view with the two posi Chen positions of the bolt of the Befestigungsvor direction.

Fig. 6 shows an embodiment of the static and dynamic foot support with a tension spring as an elastic element.

Fig. 7 shows a preferred embodiment of the articulated suspension of the footrest plate.

Fig. 8, the elastic element with an arrangement to limit the loading Be.

Fig. 9, the static and dynamic footrest with a rubber band spring for hanging the footrest plate.

Fig. 10 shows an embodiment of the static and dynamic foot support with split footrest plate in the top view.

Fig. 11, the foot rest according to Fig. 10 in a front view.

Fig. 12, the static and dynamic footrest with a triangular, endless rubber band suspension of the footrest plate.

Fig. 13, the rubber band suspension according to Fig. 12 in a plan view.

In Fig. 1a and Fig. 1b, the structure and operation of the static and dynamic footrest is shown in a Seitenan view. Fig. 1a shows the footrest in the unloaded state and Fig. 1b in the loaded. Quantitative within a Rah or pipe frame 2 is a Fußauflageplatte 1 with Be fastening elements 3 at four support points 4, 4 ', 5, 5' be strengthened, of which to the pictures Fig. 1a and Fig. 1b only the support points 4 and 5 are seen.

The entire tubular frame 2 consists of two side parts 7 , 7 ', each with two vertical fastening bars 8 , 8 ' and 9 , 9 ', of which only one side part 7 and the fastening bars 8 and 9 in each of the figures Fig. 1a and Fig. 1b are visible. In the mounting bars 8 , 8 'and 9 , 9 ' holes 12 are introduced to adjust the footrest plate 1 at predetermined, discreet intervals.

The side parts 7 , 7 'are connected by longitudinal bars 10 , 11 to form a firm and stable frame 2 . Since the longitudinal rails 10, 11 extend perpendicularly to the plane of the drawing, they are in Fig. 1a and Fig. 1b also not visible.

On one side, the footrest plate 1 is arranged pivotably about an axis through the support points 4 , 4 'on the fastening bars 8 , 8 '. The other side of the Fußauflageplat te 1 pivots against elastic elements 6 , the points in the Aufla 5 , 5 'are attached to the mounting bars 9 , 9 '. The elastic elements 6 , which have to exert the necessary restoring force when bobbing with the feet, were selected in their spring force on the basis of physiological examinations.

At all four support points 4 , 4 ', 5 , 5 ', both for the pivotable and for the resilient fastening, the footrest plate 1 is held by the fastening elements 3 in the form of fastening devices with a snap action. Such a fastening element 3 is shown separately in FIG. 4. With a socket pin 14 , the Befestigungse element 3 is inserted through one of the holes 12 , which are provided in the fastening bars 8 , 8 ', 9 , 9 ' for changing the height and the slope of the footplate 1 .

The pivotable attachment is carried out on the rear side of the footrest plate 1 by the socket pin 14 of the fastening supply element 3 through the mounting spar 8 of the Rohrge position 2 in a hole or bracket in the footrest plate 1 , which serves as a pivot bearing. The socket pin 14 is fixed by a fastening spar 8 , 8 ', 9 or 9 ' around elastic clip, the snap part 16 of the fastening element 3 .

On the other, front side, on which the footrest plate 1 is connected to the fastening bars 9 , 9 'via the elastic element 6 , the fastening is expediently carried out using the same fastening elements 3 . The ela-elastic element 6 , which is connected at one upper end to the foot platen 1 by a hinge 13 , is pinned at its lower end to the corresponding mounting spar 9 , 9 '.

Through the bores 12 in the vertical fastening bars 8 , 8 ', 9 , 9 ', the footrest plate 1 can be adjusted in height and angle by moving the fastening devices with a snap action 3 . In addition, by moving the fastening elements 3 on the two elastic elements 6, the footrest can be converted quickly and easily from the dynamic into the static application. This is done in a simple manner in that the fastening devices with snap action 3 of the corresponding holes 12 are drawn into the mounting spars 9, 9 'for supporting the elasti rule elements 6 and are inserted into another hole 12 within the elastic members 6, so that the elastic elements 6 at a point below the BEFE Stigung the footrest plate 1 rests on the joint 13 .

Fig. 2 shows the same footrest according to Fig. 1a and Fig. 1b, but without the elastic elements 6 , in a retrofit for use as an exclusively static footrest. This embodiment illustrates in particular the structure of the frame or tubular frame 2 according to the invention.

The tubular frame 2 consists of the two side parts 7 , 7 ', which are connected to one another by the two longitudinal spars 10 , 11 and between which the footrest plate 1 is fastened to the four support points 4 , 4 ', 5 , 5 '. On the vertical fastening bars 8 , 8 ', 9 , 9 ' of the side parts 7 , 7 ', the footrest plate 1 can be adjusted in height and angle via the bores 12 , for this purpose the fastening elements 3 are displaced in the bores 12 . On the rear side of the footrest (fixing pillar 8, 8 ') are the Befestigungsele elements 3 in a hole or retainer on the foot support plate 1 rotatably mounted and on the front side (fixing pillar 9, 9'), the plug pins engage 14 (Fig. 4 ) in an elongated hole or groove in the footplate 1 . As a result, in addition to the height adjustment of the footrest plate 1, an angle adjustment or adjustment of the inclination of the footrest plate 1 is also possible.

The conversion of the footrest from the dynamic in the stati's operation and vice versa is shown in Fig. 3a and Fig. 3b in egg nem cutout on the resilient member 6 is more clearly Darge.

Fig. 3a shows the elastic element 6 in dynamic appli cation. The fastener 3 is inserted with its socket pin 14 in a lower of the holes 12 in the vertical fastening supply rail 9 of the tubular frame 2 and fastens the elastic element 6 at the same time on its lower part.

In Fig. 3b the same detail can be seen, the fastener 3 from the lower bore 12 of the fastening bracket 9 Be and the lower attachment point of the ela-elastic element 6 removed and in a higher Boh tion 12 within a cavity 19 of the elastic elements tes 6 is inserted.

The fastening element 3 clamps firmly on the fastening spar 9 and the elastic element 6 now lies with its nenkante in on the freely protruding socket pin 14 ( FIG. 4) of the elastic element 6 .

In the cutouts Further, the pictures Fig. 3a and Fig. 3b is a part of the Fußauflageplatte 1 dung with the Gelenkverbin 13 to recognize at which the elastic member is rotatably mounted. 6

In Fig. 4 an expedient embodiment of the fastening supply element 3 is shown in the form of a snap element. A plug pin 14 is embedded in an elastic snap spring element, which consists of a handle part 15 and a snap part 16 . When using the fastening element 3 of the plug pin 14 in one of the bores 12 is fastening rails in the loading 8, 8 ', 9, 9' inserted, and the latch member 16 engages one of the tubular fixing pillars 8, 8 ', 9, 9' of the tubular frame. 2

Fig. 5 shows in a detail a possible suspension of the elastic element 6 at the Fußauflageplatte 1 and the two possible positions of the socket pin 14 of the Fixed To supply element 3.

The fastening element 3 is connected via a swivel joint 13 in an upper fastening eyelet 17 to the footrest plate 1 . During dynamic operation of the footrest, the plug pin 14 of the fastening element 3 in the lower fastening stigungsöse 18 of the fastener 3 and in static operation, the elastic element 6 is on the plug bolt 14 , which now protrudes into the cavity 19 of the elastic element 6 ,

In the right part of Fig. 5, several possible positions of the position of the plug pin 14 in the cavity 19 of the elastic element's 6 are indicated, which are taken in static operation according to differing inclination angle of the footrest plate 1 .

An embodiment of the static and dynamic footrest with an elastic element 6 as a tension spring can be seen in FIG. 6. A similar elastic element 6 is used as in Fig. 1a and Fig. 1b. It is fixed in Fig. 6 with the fastener 3 in an upper bore 12 on BEFE stigungsholm 9 , wherein the elastic element 6 with its upper fastening eyelet 17 on the socket pin 14 of the fastening element 3 hangs. The lower fastening of the elastic element's 6 takes place on the footrest plate 1 . This attachment may be rigid or also, as shown in FIG. 1a and FIG. 1b, via a joint 13.

In the rigid connection of the elastic element 6 with the footplate 1 , the upper eyelet 17 of the elastic element 6 on the plug pin 14 must be rotatably gela gert. Even better is a solution in which both BEFE stigungsstellen of the elastic element 6 leads out articulated.

A conversion of the dynamic footrest into a static takes place in that the footrest plate 1 as shown in Fig. 2, with a fastening device with snap action 3 , which is inserted beneath the footrest plate 1 through a hole 12 in the mounting bracket 9 , is fi fi xed.

A simple articulated suspension of the footrest plate 1 on the elastic element 6 is done in Fig. 7 by a simple, right-angled suspension pin 20th The suspension pin 20 engages with its upper, horizontally curved end in the lower fastening eyelet 18 of the elastic element 6 and is screwed to the footrest plate 1 with its lower, vertically curved end.

To limit the tensile force or to avoid over-stretching of the elastic element 6 , a limiting pin can be arranged in a bore 12 in the fastening spar 9 below the footrest plate 1 , which is designed in the same way as the fastening elements 3 .

Another solution for limiting an overload of the elastic element 6 is shown in Fig. 8 in a loaded and an unloaded state.

The elastic element 6 is equipped in its inner cavity 19 with ribs or knobs 21 , 21 'and 22 , 22 '. When loading, the geometry of the tensile spring element 6 changes in such a way that the rib 21 bears against the rib 21 'and the rib 22 bears against the rib 22 ', thus preventing a further deformation of the tension spring.

The tensile strength of the elastic element 6 is relatively high, the spring force results less from the hardness of the material, but from the deformation of the geometry.

A further design of the footrest according to the invention is carried out in a modification of FIG. 6 in FIG. 9.

The footrest plate 1 hangs with its front end on one or more (preferably two) rubber band springs 23 , which on one upper side on an upper part of the frame 2 , preferably on the longitudinal beam 10 , suspended and on the other, lower side in hooks 24 attached below or within the footplate 1 are suspended.

The mounting spar 9 is used in this embodiment only for receiving a fastener 3 , which serves as a limiting pin to prevent overextension of the rubber band spring 23 or is used when converting the footrest from static tables into dynamic operation. In the latter case, e.g. B. the arranged on the footrest plate 1 hook 24 together with the rubber band spring 23 can be folded under the footrest plate 1 .

A footrest with a divided footrest plate 1 , 1 'is shown in FIG. 10.

The tubular frame 2 can be seen with its two side parts 7 , 7 'and the upper longitudinal spar 10 . Compared to the figures Fig. 1a and Fig. 1b is inserted to the pipe frame 2 in the center of a sub-spar 25, which on the lower longitudinal beam 11 carries the tubular frame 2 of the upper longitudinal spar 10th The auxiliary spar 25 is designed so that it does not interfere when using the foot support plates 1 , 1 ', but at least has a vertical part 26 for fastening or suspension of the foot support plates 1 , 1 '.

On the heel side, at the bottom of the figure ( Fig. 10), both footrest plates 1 , 1 'with a continuous axis 28 in the form of a longitudinal bolt between two fastening elements 3 at the two support points 4 , 4 ' are rotatably mounted. For this purpose, the longitudinal bolt 28 can either be guided through a longitudinal bore through the two footrest plates 1 , 1 'or fastened by means of bearing clamps which are arranged below the footplate geplatten 1 , 1 '.

On the front side of the footrest, top of the drawing ( Fig. 10), a split axis 29 , 29 'is used for a different angle of inclination of the two footrest plates 1 , 1 '. The axes 29 , 29 'each lead from the two side parts 7 , 7 ' of the tubular frame 2 to the auxiliary spar part 26 and are fastened to the corresponding fastening bars 9 , 9 'by the fastening elements 3 with a snap action.

In FIG. 11 the footrest plate 1 according to FIG. 10 can be seen in a view from the front.

In the middle of the frame 2 , the auxiliary beam 25 with its vertical 26 and its horizontal part 27 is net angeord. The two footrest plates 1 , 1 'are rotatably mounted on the rear side of the footrest (in the drawing plane at the front) around the axis 28 and hang on their front side by means of the elastic elements 6 , corresponding to the suspension according to FIG. 7 divided axes 29 , 29 '. Both foot plates 1 , 1 'have the same angular position in this illustration. You can by changing the two part axes 29 , 29 '. to be changed.

In Fig. 12, a static and dynamic footrest is Darge in which the dynamic operation or the ela-elastic elements in the form of a triangular, endless rubber band suspension 30 is executed, which connects the footrest plate 1 with the frame 2 .

The endless rubber band 30 is guided over guide rollers 31 , two of which are attached to the front of the footrest plate 1 and one in the middle on the upper longitudinal spar 10 of the frame 2 .

For changing the tension of the rubber band 30 and the win of the Fußauflageplatte 1 kelneigung can spar at the upper longitudinal 10 and two guide rollers 31 may be arranged whose distance is selected in dependence on the inclination of Fußauflageplatte. 1

In the side parts 7 , 7 'of the frame 2 30 limiting pins 32 are arranged to limit the rocking angle and to prevent an overextension of the rubber band.

In Fig. 13 the rubber band suspension according to Fig. 12 is shown in plan view. The conversion of the dynamic footrest into a static one is possible in a simple manner.

The endless rubber band 30 is suspended from the guide roller 31 on the upper longitudinal spar 10 and lies due to its own elasticity around the guide rollers 31 on the geaufplatte 1 Fußaufla, which now rests on the limit pins 32 (see in Fig. 12). The limiting pins 32 can, as in Fig. 2, the fasteners 3 , engage directly in the foot plate 1 to fix it in a predetermined position.

The solution according to FIG. 12 and FIG. 13 is particularly simple and practical. The endless rubber band 30 is easily interchangeable, so that rubber bands 30 with different spring forces can be used as required.

For an execution of the footrest with a divided footrest plate 1 , 1 ', each partial plate is equipped with such an endless rubber band suspension 30 .

LIST OF REFERENCE NUMBERS

1

Fußauflageplatte

1

'' second footrest plate with split version

2

Frame, tubular frame

3

fasteners

4

.

4

'' rear support points

5

.

5

'' front support points

6

elastic elements

7

.

7

'' Side parts of the tubular frame

8th

.

8th

'' rear tie bars

9

.

9

'' front tie bars

10

upper longitudinal spar of the tubular frame

11

lower longitudinal spar of the tubular frame

12

Holes in the mounting rails

13

joint

14

Steckbolzen

15

handle part

16

snap part

17

upper eyelet

18

lower eyelet

19

Cavity of the elastic element

20

suspension pin

21

.

21

'' upper traction limit knobs

22

.

22

'' lower traction limit knobs

23

Elastic spring

24

hook

25

auxiliary spar

26

vertical part of the auxiliary spar

27

horizontal part of the auxiliary spar

28

continuous axis

29

.

29

'shared axis

30

endless rubber band

31

guide rollers

32

limiting pin

Claims (17)

1. Static and dynamic footrest, in particular for a prophylactic and therapeutic application, consisting of a footrest plate ( 1 ) on a frame ( 2 ) at four support points ( 4 , 4 ', 5 , 5 ') by means of fastening elements ( 3 ) is adjustable in height and angle, the footrest plate ( 1 ) at the rear, which is preferably the heel side of the footrest plate ( 1 ), in two support points ( 4 , 4 ') in side parts ( 7 , 7 ') of the frame ( 2 ) is rotatably mounted and all fastening elements ( 3 ) at the support points ( 4 , 4 ', 5 , 5 ') are adjustable in height and angle in pairs at the front and rear, characterized in that the frame ( 2 ) consists essentially of two by longitudinal bars ( 10 , 11 ) interconnected side parts ( 7 , 7 ') and the front side of the footrest plate ( 1 ), which is preferably the toe side, via two support points ( 5 , 5 ') by means of elastic elements ( 6 ) on Ge stell ( 2 ) is attached. 2. footrest according to claim 1, characterized in that the frame ( 2 ) is a tubular frame. 3. Footrest according to claim 1 and 2, characterized in that the fastening elements ( 3 ) are releasable fastening devices with snap action and consist of a plug pin ( 14 ) with an elastic, the tube of the Rohrge stells ( 2 ) comprising bracket ( 16 ) , 4. footrest according to claim 1, characterized in that the elastic elements ( 6 ) are compressible or stretchable rubber elements. 5. Footrest according to claim 1, characterized in that the elastic elements ( 6 ) are elastic bands under tension ( 23 , 30 ). 6. footrest according to claim 1, characterized in that the elastic elements ( 6 ) on train or pressure bean claimed spiral, leaf or gas springs. 7. footrest according to claim 1 and 4 to 6 characterized in that the elastic elements ( 6 ) can be locked. 8. footrest according to claim 1 and 4 to 6 characterized in that the elastic elements ( 6 ) have means for loading limitation of the force and / or for protection against overload. 9. footrest according to claim 8, characterized in that the means for limiting the action of force and / or for protection against overloading of the elastic elements ( 6 ) are limiting elements which are a structural part of the elastic elements ( 6 ). 10. Footrest according to claim 8, characterized in that the means for limiting the force of the elastic elements ( 6 ) outside the elastic elements ( 6 ) are arranged limiting pins ( 32 ). 11. Footrest according to claim 9, characterized in that the limiting elements in the interior of the elastic elements ( 6 ) arranged traction limiting knobs ( 21 , 21 ', 22 , 22 '). 12. Footrest according to claim 1, characterized in that the fastening elements ( 3 ) for rotatable fastening and the fastening elements ( 3 ) for resilient fastening are identical. 13. Footrest according to claim 1, characterized in that the elastic element ( 6 ) is an elastic suspension consisting of an endless rubber band ( 30 ), which two support points ( 31 ) on the footrest plate ( 1 ) and at least one support point ( 31 ) on the frame ( 2 ). 14. Footrest according to claim 14, characterized in that rotatable guide rollers are arranged in the support points ( 31 ). 15. footrest according to claim 1, characterized in that the footrest two-part footrest plate ( 1 , 1 ') sits and each partial plate ( 1 or 1 ') for each foot sepa rat is adjustable. 16. Footrest according to claim 1 and 16, characterized in that is arranged for adjusting the split Fußauflageplatte (1, 1 '), an auxiliary beam (25) between the part-plates (1, 1') and between the longitudinal beams (10, 11). 17. Footrest according to claim 1 and 16, characterized in that the spring force of the elastic elements ( 6 ) is determined on the basis of physiological examinations.