DE9319853U1 - Stilts shoe - Google Patents

Description

DESCRIPTION

Stilt shoe

The invention relates to a stilt shoe with the features mentioned in the preamble of the main claim. These are known from US-PS 4,927,137.

There you are taught to arrange the stilt foot plate between two upright handlebars and to pivot on them. The stilt foot plate and the stilt base are braced against each other in front of and behind the swivel joint by tension springs, so that when walking with the stilt shoe, a restoring force is exerted on the handlebar arrangement.

In the literature "Humane Produktion" 11/81, a stilt shoe with a parallelogram handlebar consisting of four upright handlebars is described, which apparently does not require spring support and in which the swivel movement of the parallelogram handlebar is limited by stops.

The well-known stilt shoes are complicated in their construction. If they have spring supports, these are located in easily accessible places, which can lead to injuries when using the stilt shoes. With stilt shoes without spring supports, a special level of craftsmanship is required to maintain balance.

The invention is based on the task of making the stilt shoe safer to operate and to relieve the joints of the craftsman during use.

Based on US-PS 4 927 137, the stated problem is solved with the characterizing features of the main claim.

The arrangement of the spring support in the joint area of the parallelogram handlebar leads first of all to the advantage of concealed placement, which eliminates the risk of injury and improves operational safety. At the same time, however, this arrangement creates the prerequisite for the spring support to be possible not only in the direction of travel or in the opposite direction, but also across it.

This advantage is achieved in a particularly simple manner in that the spring support is formed by a leaf spring arranged in the joint area. .. With the features of claims 3 and 4, an effective spring support in the walking direction is created.

The design of the stilt shoe according to the features of claims 5 to 8 also leads to a spring-supported lateral evasive movement option of the stilt shoe, which makes use significantly easier for the craftsman and leads to a safer feeling of balance.

The invention can be implemented in a variety of ways. For example, it is possible to integrate the spring support into the joints of the parallelogram handlebar, as is clear from claims 9 and 10. If, however, the features of claims 11 and 12 are applied, then the spring support also provides a stop limit with regard to the inclination of the parallelogram handlebar.

In this embodiment of the invention, the spring support is formed by angle fittings that are pivotally mounted around the joints between the handlebars and the stilt base plate and are supported with a horizontal leg on an upwardly acting spring and with a downwardly directed leg rests on the outside of the individual handlebar. For this purpose, the stilt base plate has a bolt that projects downwards between the handlebars and is primarily mounted in a rotatable manner to guide the spring, at the upper end of which the horizontal legs of the angle fittings rest under pre-tension. If, for example, when walking forwards, a force acting diagonally downwards in the walking direction is directed by the craftsman's foot against the stilt base plate, the parallelogram handlebar attempts to adjust itself in the walking direction in an articulated manner, whereby the angle fitting at the back in the walking direction follows this pivoting movement due to its support on the handlebar outer wall and loads the spring. The angle fitting in front in the direction of travel, however, is relieved of load and is not involved in the force transfer. When the craftsman's step that caused this adjustment is finished and there is no longer any transfer of force, the loaded spring pushes the parallelogram handlebar and thus the stilt base plate back to its original position.

However, the invention also deals with the problem of relieving the joints of the craftsman, in particular the ankle joint, knee joint and hip joint, when the craftsman is in a lateral incline while working. For this purpose, as part of an independent inventive concept, the stilt base plate is mounted transversely to the direction of movement and is supported by springs. In an advantageous embodiment of this teaching, the lower bearing bolts of the

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Parallelogram handlebars are guided in elongated holes in the stilt base, adjustable in height, and supported by an upright spring arrangement, e.g. an upwardly curved leaf spring. This spring support not only takes the weight of the craftsman, but also reacts when the stilt base plate is loaded in a lateral direction, in relation to the direction of movement. The individual bearing bolts of the parallelogram handlebar can then be adjusted at an angle in the elongated holes, which means that force support in the craftsman's knee and/or hip joint can be largely avoided. Instead, the upper and lower ankle joints are loaded, as with normal walking on sloping ground, with the knee and hip joints largely protected. This results in a particularly ergometrically favorable effect on the craftsman's joints when walking with the stilt shoe.

Details of the invention can be seen from the drawing. The invention is shown schematically and by way of example. They show:

Figure 1: a vertical section through a stilt shoe with spring support in the direction of movement via articulated intermediate links in the joint area of a parallelogram handlebar,

Figure 2: a partial vertical section through a lower joint of the stilt shoe with a spring support transverse to the direction of movement,

Figure 3: a cross-section along the line IH-III through the arrangement according to Figure 2,

Figure 4: a cross section through a ball joint bearing,

Figure 5: a partial vertical section through a leaf spring support in the upper joint area of the parallelogram linkage ,

Figure 6: a cross-section through a spring-loaded bolt bearing of the parallelogram link and

Figure 7: a vertical section through a spring-loaded tilting bearing of the parallelogram linkage.

In the example in Figure 1, a stilt shoe (1) is shown which has a stilt foot plate (2) and a parallelogram handlebar (5). The stilt foot plate (2) has standard safety straps (3) for fastening the foot of a craftsman to the stilt foot plate (2) as well as a support (4) for securing the leg to the stilt shoe (1).

The parallelogram steering (5) is connected to the underside of the stilt base plate (2) with the two joints (7) and to a stilt base (6) with the two lower joints (8). Due to this parallelogram steering, the stilt base plate (2) can be adjusted forwards and backwards while maintaining its tread parallel. However, this adjustment movement is supported by a spring (14), which generates a sufficiently large restoring force when the parallelogram steering (5) is pivoted.

To achieve this effect, angle fittings (9,10) are used, which are mounted so that they can rotate around the upper joints (7). A vertically extending leg (18) rests on the outside of the individual handlebar (5).

A horizontal leg (11) is attached to a spring plate

(12) which acts from above against the pre-tensioned spring (14). This spring (14) is attached to an upright bolt

(13) which reaches upwards through the spring plate (12) and is rotatably mounted in a horizontal bolt bearing (15). From below, the spring (14) is adjusted to the desired preload by the spring plate (16) and the nut (17).

The angle fittings (9,10) preferably consist of two sheet metal parts arranged parallel to one another, which are connected to one another by spacer bolts. The distance between the sheet metal parts is different, so that the horizontal legs (11) can interlock in the area of the upper spring plate (12) like a comb. The bolt (13) is guided between them.

When the craftsman moves forward in the direction of arrow (26) with his foot attached to the stilt shoe (1), a force directed diagonally downwards in the direction of movement acts on the stilt base plate (2) according to the line of action of force (27). The parallelogram link (5) therefore tends to perform a swivel movement in the direction of arrow (28). This allows the stilt base plate (2) to move in the direction of movement (26), while the stilt base (6) remains stationary on the ground. This force according to arrow (27) leads to the angle fitting (9) lying back in the direction of movement (26) being carried along by the upper hinge pin (7), thus participating in the swivel movement of the link (5) and acting with its horizontal leg (11) against the spring (14) in a vertical direction and tensioning the spring. The angle fitting (10) located in the direction of movement, however, initially becomes ineffective during this movement. It

only develops its supporting effect when the foot moves in the opposite direction to the arrow (26) with the stilt base plate (2). The initially ineffective angle fitting forms a stop against the underside of the stilt base plate (2) when a certain swivel position is reached, the handlebar (5), thereby limiting the swivel angle.

Figures 2 to 4 disclose another independent inventive concept which is concerned with allowing the stilt base plate (2) to move sideways relative to the walking direction while being supported by springs.

For this purpose, Figure 2 shows that the lower joint (8) is guided in slots (19) of the stilt base (6) in a vertical direction and is supported from below by a leaf spring (20). This leaf spring (20) is attached to the stilt base (6) on one side at (21). The other side of the leaf spring (20) can move on the stilt base (6) under load. It is assumed that the joint (8) is designed as a bolt that is clamped in two legs of the parallelogram link (5), as shown in Figure 3. The bolt (8) is surrounded by a sleeve (30) which creates a distance between the two legs (29).

The leaf spring (20) initially takes the weight of the craftsman along with the movable part of the stilt shoe (1) via the handlebars (5) and the hinge pins (8). If the stilt base (6) comes onto a sloping surface or if the craftsman shifts his weight sideways, the pin (8) with the sleeve (30) can be positioned at an angle in the elongated holes (19) and thus cause the stilt base plate (2) to move sideways.

The leaf spring (20) is dimensioned so that it is stable enough to bear the weight at all times and to absorb the lateral weight shift and move the parallelogram handlebar (5) back again.

There are of course various ways of constructing this support for the stilt base plate (2). In the example in Figure 4, for example, a ball joint (22) is shown, which can be used instead of the joints (7, 8) according to Figure 1. In this example, the ball joint (22) can be rotated in a slide (24), whereby the slide (24) is guided so that it can be moved in the vertical direction. The slide (24) is supported by the support springs (25). At another location there are further support springs (23), which cushion a swivel movement of the individual handlebar (5). Instead of the ball joint (22), a cylinder joint or the like can also be arranged.

The variant in Figure 5 shows the arrangement of a leaf spring (31) that is curved on the outside around the joint (7) of the parallelogram link (5). One end of the leaf spring (31) is attached to a threaded bolt (32) that extends vertically downwards on the underside of the stilt base plate (2). The preload of the leaf spring (31) can be changed using the nuts (33). The other end of the leaf spring (31) is supported on the inside of the individual link (5) and is guided there so that it can move longitudinally.

The example in Figure 6 shows an alternative to Figure 3. The sleeve (30) guided on the hinge pin (8) is surrounded by a rubber/metal spring body (34), the circumference of which is supported on the stilt base (6).

an elastic absorption of the weight of the craftsman is ensured. At the same time, however, this arrangement can also achieve a springy transverse support, because the rubber/metal spring body (34) is also able to absorb tilting movements in an elastically restoring manner.

Finally, Figure 7 shows an elastic metal composite body (35) which is attached to a threaded bolt (36) of the stilt base (6) and is elastically supported on the stilt base (6). The handlebar (5) is also connected to the metal composite body (35) via a threaded bolt (37) and is thus supported resiliently on all sides.

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PARTS LIST

1 Stilt shoe 2 Stilt base plate 3 Safety belt 4 support 5 Parallelogram handlebar 6 Stilt floor 7 joint 8th joint 9 Angle fitting 10 Angle fitting 11 horizontal leg 12 Spring plate 13 bolt 14 Feather 15 Bolt bearing 16 Spring plate 17 Mother 18 vertical leg 19 Long hole 20 Leaf spring 21 Fastening 22 Ball joint 23 Support springs 24 Sleds 25 Support springs 26 Arrow (direction of movement) 27 Line of action of force 28 Arrow (panning direction) 29 leg 30 Sleeve 31 Leaf spring 32 Threaded bolt

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33 Mother

34 Guirani-Z metal spring bodies

35 metal composite bodies

36 threaded bolts

37 threaded bolts

12

Claims (12)

PROTECTION CLAIMS 1.) Stilt shoe (1) for craftsmen, consisting of a height-adjustable parallelogram handlebar (5), on the underside of which a stilt base (6) and on the top of which a stilt foot plate (2) with a support (4) for calf fixation are articulated, whereby a spring support of the parallelogram handlebar (5) is provided against the stilt base (6) or the stilt foot plate (2), characterized by a spring support (14,17,20) in the joint area (7,8) of the parallelogram handlebar (5). 2.) Stilt shoe according to claim 1, characterized in that the individual spring support consists of a leaf spring (20, 31). 3.) Stilt shoe according to claim 2, characterized in that the leaf spring (31) engages around a hinge pin (7) on the outside and is supported with its ends on the inner surfaces of the stilt foot plate (2) and/or the stilt bottom (6) as well as on the inside of the associated parallelogram link (5), one end of the leaf spring (31) being fastened. 4.) Stilt shoe according to claim 2 or 3, characterized in that the leaf spring end is fixed in a height-adjustable manner to a vertically extending threaded bolt (37) fastened to the stilt base plate (2). 5.) Stilt shoe in particular according to claim 1 or one of the following, characterized in that the parallelogram link (5) is mounted transversely to the direction of movement and is supported by springs. 6.) Stilt shoe according to claim 5, characterized in that the lower bearing bolts (8) of the parallelogram link (5) are guided in elongated holes (19) of the stilt base (6) so as to be height-adjustable and are each supported by an upright spring arrangement, e.g. by an upwardly curved leaf spring (20). 7.) Stilt shoe according to claim 6, characterized in that the leaf spring (20) is firmly connected (21) to the stilt base (6) on one end face and is guided on the stilt base (6) in a deflectable manner on the other end face. 8.) Stilt shoe according to claim 5, characterized in that the stilt foot plate (2) is guided in the region of the upper bearings (7) of the parallelogram link (5) so as to be tiltable transversely to the direction of movement and is supported by springs. 9.) Stilt shoe according to claim 1 or one of the following, characterized in that the individual joint (7 or 8) of the parallelogram link (5) is designed as a ball joint (22) and a resilient support of the parts connected to one another in an articulated manner is provided in and/or transversely to the direction of movement. 10.) Stilt shoe according to claim 1 or one of the following, characterized in that the spring support consists of an elastic metal composite bearing (35). 11.) Stilt shoe according to claim 1, characterized in that the spring support (14) is formed by angle fittings (9, 10) which are pivotally mounted around the joint bolts of the parallelogram handlebar and are supported with a horizontal leg (11) on an upwardly acting spring (14) and rest on the outside of the individual handlebar (5) with a downwardly directed leg (18). 12.) Stilt shoe according to claim 11, characterized in that the stilt foot plate (2) has a bolt (13) projecting downwards between the links (5) and mounted primarily in a rotatable manner for guiding the spring (14), on the upper end of which the horizontal legs (11) of the angle fittings (9, 10) rest under tension.