WO2007137834A1

WO2007137834A1 - Roller skate comprising a curved damping element

Info

Publication number: WO2007137834A1
Application number: PCT/EP2007/004782
Authority: WO
Inventors: Timo Azadi
Original assignee: Timo Azadi
Priority date: 2006-05-30
Filing date: 2007-05-30
Publication date: 2007-12-06
Also published as: ATE530232T1; EP2073906B1; DE202007019354U1; EP2073906A1

Abstract

The invention relates to a roller skate, especially an inline roller skate. Said roller skate comprises at least one front and at least one rear roller (10a, 10d), provided with bearings (12), a roller support (16), a shoe fastening section (46) and a damping device (18), interposed between the shoe fastening section (46) and the bearings (12). Said damping device (18) has a single curved damping element (20), extending in the longitudinal direction (L) of the shoe, or a plurality of curved damping elements (20), which extend in parallel when viewed from the longitudinal direction (L) of the shoe, said damping element(s) being mounted in a central position on the roller skate when viewed from the side. The curved damping element (20), when subjected to a vertical force, is elastically deformed while assuming a different curve shape.

Description

ROLLING SHOE WITH ARC STEEL ELEMENT

The invention relates to a roller skate, in particular roller skate, with at least one front and at least one rear roller provided with bearings, a roller carrier, a shoe attachment and a damping device provided between the shoe attachment and the bearings.

US 5,575,489 shows an inline skate with a damping device. The damping device has a triangular body attached to the underside of the shoe with an opening. From the triangular body go out two beam-like projections, which extend in a substantially V-shaped forward or backward. The rollers are attached to the extensions. In a vertical load, the ends of the extensions are pushed upwards and the triangular body deformed.

US 4,993,725 discloses a skate with a damping device. The damping device absorbs a landing after a jump, which prevents sports injuries. To this

Purpose are one or more substantially C-shaped, elastic mounts provided which make the connection between the runners and the shoe.

In each case a C-shaped section is attached to the front and at the rear end of the skate.

The object of the invention is to provide an in-line roller skate which has improved cushioning properties and is simple and inexpensive to manufacture.

This is achieved in a roller skate of the type mentioned above, characterized in that the damping device has only one running in the shoe longitudinal direction, arcuate damping element or more seen in the shoe longitudinal direction side by side, arcuate damping elements, which is or in the side view of the skate centrally on the skate is / are, said deforms the arcuate damping element elastically under the action of a vertical force taking another arch shape becomes. According to the invention, the at least one central and very large arcuate damping element is uniformly deformed with a vertical force, ie jerky shocks that would worsen the ride comfort are well damped. Thus, the damping device improves the driving feeling. The damping element also has a spring action, so that energy is given back to the driver when repelled. In addition, jumps, bumps, etc. are compensated by the damping device over a large damping and suspension travel, which reduces the risk of injury and increases the load capacity of the skate. Also, a higher speed can be achieved with the roller skate according to the invention. The at least one damping element is arranged centrally on the skate in order to be able to better absorb and forward the forces and to enable large damping paths. "Central" here means that the damping element is arranged substantially centrally when viewing the entire roller skate and the rollers.The damping element is therefore not provided in the edge or outer area of the roller skate, as for example the resilient portion of the roller skate shown in US 4,993,725 Is skating.

Preferably, the damping element takes on a deformation

Bow shape with a larger radius, i. The ends are not compressed, but bent, which provides a soft cushioning. The

At least one end of the damping element is displaceable in the horizontal direction and is not fixed rigidly at its ends, for example.

Preferably, the damping element has a chord length which corresponds at least approximately to the length of the attached shoe. As a result, the vertical force acting on the damping element, transmitted by the shoe ends, is distributed uniformly and over a sufficiently large area. Furthermore, the damping element is optimally large in order to achieve the high damping paths.

In particular, the damping element has a chord length corresponding to at least 80% of the center distance between the foremost and rearmost rollers to ensure that the introduced vertical force is distributed over a sufficiently large area. The damping element should in particular be a continuously curved arc. About the output curvature, so the curvature, which is present without the action of a vertical force, the damping and the spring characteristic can be changed. A uniform curvature over the entire length of the damping element ensures a uniform application of force and power distribution.

The damping element is preferably a leaf spring-like body, i. a body whose thickness is substantially smaller than its width (preferably by a factor of 2). The width and the thickness of the leaf spring-like body and thus the spring property of the damping element can be varied over the arc length. The maximum width of the leaf-spring-like body should be hand width, otherwise the damping element of the left skate and that of the right skate abut each other in a parallel driving and possibly interfere, hinder and / or get caught.

According to one embodiment, the damping element is a one-piece body, whereby production and assembly of the skate are simplified, resulting in cost savings. Furthermore, the stability is very good.

According to a further embodiment, a plurality of laterally interconnected damping elements are provided. A web, for example, connect the damping elements together.

Preferably, the damping element has bow ends that lie substantially in a common horizontal plane. This is substantially parallel to the plane of the shoe attachment or the shoe sole. The force distribution is thus uniform.

Preferably, the midpoint of the arch (more specifically, the area around the midpoint) is in side view on an area between the ball of the foot and the shoe center. If the ball of the foot is at the center of the arch, it is most likely to tilt backward, as the center of gravity is offset. However, if the shoe center is at the center of the arch, tilting is the least likely. In particular, the midpoint of the arch (more specifically, the area around the midpoint) in side view is substantially at the shoe center or below the center of gravity of the body, making tilting forward or backward more unlikely.

In the region of the center of the arch, a fastening device for holding the shoe may be provided. About the holder, the force is introduced into the damping element. Due to the central attachment, a uniform force is applied.

According to one embodiment, a fastening device for holding the shoe is provided in the region of an arc end. The second end of the sheet is then connected to the roll carrier.

According to a further embodiment fastening points are provided, which are provided at the transition from the arc center to the bow ends, i. the bow center has no attachment points. It can be provided two or more attachment points.

The connections between the damping element and the adjacent part, ie the roller carrier or the shoe attachment, are preferably designed to be movable in the longitudinal direction in order to allow free deformation of the damping element.

Preferably, the vertical forces are exclusively over the ends of the

Transfer damping element. The damping element is therefore not attached over a large area to the shoe attachment or the roller carrier, which would reduce the available for the suspension and damping, non-clamped portion of the arc. The contact surface for the attachment between the damping element and the shoe attachment or between the damping element and the roller carrier is as short as possible, since the flexibility of the damping element is limited for this arc section and with an increase in the contact surface is accompanied by a reduction of the damping and spring potential.

According to the preferred embodiment, the entire vertical force between the shoe attachment and the bearings via the damping element ~ O -

transfer. So there are no additional connections or dampers between the shoe attachment and the camps provided.

The bow height is for example at least 50 mm, preferably at least 65 mm. This height ensures a large suspension travel, which significantly improves ride comfort. The height can also be for example 20 cm.

According to one embodiment, the bow ends are down and form the roller-side end of the damping element.

At the bow ends in particular bearing attachments are mounted for the rollers, which makes the structure of the skate easy and reduces its weight. During compression thus increases the roll distance between the front and the rearmost role. Femer is not a guide to the ends of the

Damping element necessary.

The bearing fixtures can be attached to the bow end. Thus, for example, the size of the attached roles changed or the

Roles are exchanged. The bigger the rollers, the higher

Speeds can be achieved. A roller skate can be adapted individually to the skill of a user or the road surface quality. Also, the later mentioned replacement of the damping element can be so simplified.

According to another embodiment, the bow ends are upwards, and at least one end of the bow is displaceable. Thus, the radius of the damping element can increase at an acting vertical force.

Preferably, the displaceable end of the sheet is guided in a guide. The guide is frictionless, e.g. Polytetraflurethylenhülsen be used.

The shoe attachment is preferably coupled directly to the guide, so that no additional parts must be mounted on the guide.

Alternatively, the bow ends are accommodated in a displaceable pivot bearing. Such a construction allows the arcuate Damping elements elastically deform in a vertical force to another sheet shape.

In particular, the damping element is non-destructively releasably integrated on the skate. The damping element can be replaced so quickly and easily.

The skate can only have two rollers and thus run smoothly.

The damping device preferably also forms the roller carrier. An additional roll carrier eliminates this, which simplifies assembly and reduces weight. In addition, the height is thereby reduced.

According to one embodiment, a connecting the bow ends

Provided spring element. The spring element, which is for example an elastic rubber band and is preferably made of carbon or glass fibers, is tensioned in the event of a vertical force acting on the rollers. The spring element is optimally biased in the optimal case at first. The spring element exerts a restoring force that supports the damping element in order to return the sheet to its original position.

According to a preferred embodiment, the shoe attachment for releasably attaching shoes is formed on the skate.

In theory, street shoes, sneakers, soft boots, hard boots or even ski boots can be attached to the roller skate. The shoe can be fixed with buckles and / or loops, for example. Just as quick fasteners could be used for fastening, as they are known from the bicycle sports. Alternatively, the shoe may be part of the skate and bolted or glued to the shoe attachment, as is common in in-line roller skates today.

Another idea is to attach the shoe pivotally on the roller skate. This can even lead so far that in the bale or top range

Ground contact is made possible. The rear part of the shoe is attached and the front part of the shoe can be touched like a running movement of the ground and thus the speed can be increased. Further features and advantages of the invention will become apparent from the following description and the drawings. The invention will be described with reference to various embodiments. In the drawings show:

1 shows a perspective view of a roller skate according to the invention according to a first embodiment with an integrated or attached shoe,

FIG. 2a shows a perspective view of the roller skate of FIG. 1 without a shoe with a shoe attachment,

FIG. 2b shows a perspective view of the roller skate of FIG. 1 without a shoe with an alternative shoe attachment,

FIG. 3 shows an enlarged section of the region designated by X in FIG. 2a,

FIG. 4 shows an enlarged section of the area designated Y in FIG.

FIG. 5 shows a perspective view of a roller skate according to the invention according to a second embodiment,

FIG. 6 shows a perspective view of a roller skate according to the invention according to a third embodiment in a first position,

FIG. 7 shows a perspective view of a roller skate according to a third embodiment in a second position,

8a shows a perspective view of a roller skate according to the invention according to a fourth embodiment,

FIG. 8b shows a perspective view of the roller skate according to FIG. 8a without a plate,

FIG. 9 shows a perspective view of the bearing attachment of the roller skate according to FIGS. 8a and 8b,

10 shows a perspective view of a roller skate according to the invention according to a fifth embodiment, FIG. 11 shows a perspective view of a bearing attachment of the roller skate according to FIG. 10,

FIG. 12 shows a perspective view of a roller skate according to the invention according to a sixth embodiment,

FIG. 13 shows a side view of a roller skate according to the invention with a shoe according to a seventh embodiment,

FIG. 14 shows a perspective view of the roller skate of FIG. 13 without a shoe,

FIG. 15 shows a perspective view of a roller skate according to the invention according to an eighth embodiment,

FIG. 16 shows a perspective view of a roller skate according to the invention without a shoe according to a ninth embodiment,

FIG. 17 shows a perspective view of a roller skate according to the invention without a shoe according to a tenth embodiment, and

- Figure 18 is a perspective view of a roller skate according to the invention without shoe according to an eleventh embodiment.

In the figures 1 to 4 a skate according to a first embodiment is shown. This skate is designed as an inline skate with four running in a line in the shoe longitudinal direction L rollers, namely a foremost role 10a, a rearmost roller 10d and two middle rollers 10b and c. The rollers 10a to d have bearings 12, which are fastened via bearing shafts 14 to a preferably integrally formed roller carrier 16. Already in the unloaded state, the bearing axis 14 lies on a straight line E ₁ .

On the roller carrier 16 sits centrally a damping device 18, which is an arcuate, continuously (preferably in a radius) curved

Damping element 20 includes. The damping element 20 is a one-piece

Part made of steel, plastic or a fiber reinforced plastic, such as

Example fiberglass or carbon fiber reinforced plastic exists.

As can be clearly seen in Figure 1, the damping element 20 is designed as a whole leaf spring-like, that is, its thickness d is essential, in particular by at least a factor of 2, smaller than its width b. In the embodiment shown, the thickness d is the same over the entire arc length, and it would also be possible to vary the thickness d continuously over the arc length. For example, a greater thickness d could be present in the area of the center of the arc 22 than in the area of the bow ends 24, 26.

In the region of the arc center 22, the damping element 20 via a

Fastening device 28 is locked on the roller carrier 16. This attachment can be carried out non-destructively detachable. Alternatively, it would also be conceivable, for example, to embed a damping element 20 in the injection molding of the roller carrier 16 in this case.

The two bow ends 24, 26, which face upward, end in a horizontal plane E ₂ , that is, the bow ends 24, 26 are starting from the region of the arc center 22 of equal length.

On the bow ends 24, 26 caps 30 are inserted, so that there is already a kind of positive connection. In addition, however, there are more

Fastener 32 is provided with which the caps 30 captive to the

Bow ends 24, 26 are attached. Alternatively or additionally, the

Caps 30 are of course also glued to the bow ends 24, 26. Another embodiment provides that the bow ends 24, 26 are made in one piece with the damping element 20. This can be realized in particular in the case of a plastic or fiber-reinforced embodiment of the damping element 20. About the caps 30, the damping element 20 is attached to two rod-like linear guides 34.

Each cap 30 has a substantially perpendicular to the longitudinal direction L extending cylindrical receptacle 36 in which a cylindrical bearing body 38 is seated. The bearing body 38 has holes through which the linear guides 34 protrude.

The cylindrical ends of the cap 30 have circumferentially extending slots 40 through which the linear guides 34 project into the bearing body 38, wherein the linear guides 34 also by the bearing body 38 and the

Caps 30 can protrude, as can be seen from the front cap 30. The linear guides 34 are fixed in the region of the rear cap 30 connected to the bearing bodies 38. In the area of the front cap 30, bearing bodies 38 and linear guides 34 are displaceable relative to one another in the longitudinal direction L of the linear guides 34.

In order to enable as slippery as possible longitudinal displacement of the bearing body 38 on the longitudinal guides 34, the bearing bodies 38 are preferably made of a material which has a low sliding friction, for example

Plastic such as polytetrafluoroethylene or metal. Alternatively, in the

Bearing body 38 and guide bushes 42 from the same, just mentioned

Sitting material so that the bearing body 38 can be made of a more cost-effective material.

The linear guides 34 are made of high-strength material such as steel or carbon fibers or fiber-reinforced plastic.

As shown in Figure 1, the damping element 20 extends in the longitudinal direction L of the skates and has a total length which is at least 80% of the axial distance a between the foremost and the rearmost roller 10a, 10d. In the illustrated embodiment (see Figure 2), the chord length I, ie the distance between the bow ends 24, 26 and the centers of the bearing body 38 is greater than the axial distance a and also greater than the length of the shoe 44 mounted on the skate.

As can be better seen in FIGS. 2a and 2b, shoe fasteners 46 are attached to the linear guides 34. The shoe fasteners 46 of Figure 2a comprise bridge-like plates 48 between the rod-shaped linear guides 34 in which openings 50 are provided over which the shoe 44 may be attached directly (for example, to a hard or soft boot). Alternatively, brackets 51 could also be mounted on the plates 48 in the form of a click fastener for releasable attachment of a shoe 44 such as a ski boot or a sports or trekking shoe (Figure 2b). The shoe 44 to be fastened must have a corresponding counterpart. Such snap closures are known for example from cycling. Thus, the same skate for different sizes and different shoes could be used and quickly removed or strapped when needed. The center of gravity (approximately the area in the middle of the shoe) should be above the area of the bow center 22, and thus the fastening device 28, when viewed in side view of the skate, to make tilting less likely.

Overall, the damping element 20 is centrally located on the skate, i. the damping element 20 is arranged centrally with respect to the entire roller skate and the rollers, so in no edge or outer region of the skate. In the vertical direction, all forces between the shoe 44 and the shoe attachment 46 on the one hand and the roadway on the other hand must be transmitted via the damping device 18.

In the event of unevenness in the road, in jumps, in curves or when pushing off, the damping device springs in, the extent of this deflection depending, in particular, on the spring rate of the damping element 20.

The sheet ends 24, 26 are pressed down, the sheet itself is elastically deformed, taking a different arc shape with a larger radius. The front bearing body 38 moves along the linear guides 34 further forward, at the same time due to the new curvature, the bearing body 38 are pivoted in the cap end. The elongated holes 40 allow this pivoting movement (see Figures 3 and 4).

In general, one can thus say that the bow ends 24, 26 are housed in a pivot bearing, preferably at least one pivot bearing, optionally also both, of course, are slidably mounted on the linear guides 34.

It would also be conceivable to make both pivot bearings basically adjustable, wherein a pivot bearing would then be lockable by the user in a desired displacement position, so as to align the shoe 44 in the longitudinal direction relative to the rollers 10a-d and thus to the roller skate, similar to modern Ski bindings is possible.

The arc height h (largest distance between the chord I and the arc) is at least 50 mm in the unloaded state, preferably at least 65 mm to allow a high spring and damping travel. Also, the bow height h could be 20 cm.

After compression, the damping element 20 endeavors to return to its original position, whereby of course friction energy is lost in the bearings 12 or, more precisely, is converted into heat.

The embodiment of Figure 5 differs from that shown in Figures 1 to 4 only in that the rear pivot bearing is slidably mounted along the linear guide 34 and that between the linear guide 34 or a plate 48 and the inside of the damping element 20, an additional shock absorber 52, which can also be designed only as a stop, sits. The shock absorber 52 can be designed, for example, as a simple hydraulic shock absorber or can also be just an elastic spring element or a rubber buffer.

FIG. 5 also shows once again geometric relationships which also apply to the embodiment shown in FIGS. 1 to 4 and the following. Again, the chord length I of the damping element 20 corresponds to at least the length of the shoe to be fastened 44, the chord length I is measured here between the centers of the bearing body 38, since alternatively, of course, the caps 30 can be considered as an extension of the bow. However, this depends on whether on the cap 30 also has a damping or spring effect is achieved, which does not necessarily have to be the case. The height of the arc h is accordingly determined between a straight line through the center of the bearing body 38 and the maximum distance to the damping element 20. Again, the height h is at least 50, preferably at least 65 mm and may also be e.g. 20 cm.

For the following embodiments, the already introduced reference numerals are used for functionally identical or functionally similar parts.

In the embodiment of Figure 6, the centrally located damping element 20 is directed with the bow ends 24, 26 downwards. To the

Bow ends 24, 26 are mounted bearing fasteners 54, which could also be designed as patch caps. Again, there are additional ones Attachment 56 such as screws or rivets, etc. attached. It is the same with respect to the attachment or a one-piece design as for the aforementioned caps 30th

The big difference in this embodiment from the previous one, however, is that only two rollers 10a, d are provided. The bearing mounts 54 extend like a fork about the rollers 10 a, d and take the bearing axles 14 on.

In the embodiment shown, no separate roller carrier 16 is provided. As a roller carrier 16 here acts the damping device 18 in the form of the damping element 20, which fulfills a dual function.

Between the bearing mounts 54, a the bow ends 24, 26 connecting spring element 58 is arranged, that of course can be designed as a shock absorber. The spring element 58 counteracts the elastic deformation of the damping element 20 with vertical forces and supports the restoring force.

In the area of the bow center 22, that is to say in the present case the highest point of the arch, the shoe attachment 46 is attached. The shoe attachment 46 in this embodiment consists of a plate 48 to which, for example, loops 60 are adjustably mounted in the longitudinal direction. About the loops 60 can attach a street shoe on roller skate releasably in such a way that the shoe 44 is in the area between the shoe center and ball of foot over the bow center 22. This also applies to the other embodiments (except embodiments according to FIGS. 16 and 17).

The shoe attachment 46 is in this embodiment via a

Swivel bearing 62 pivotally mounted on the damping element 20. A mounted on conventional damping means in the region of the bow center 22 on the damping element 20 bearing block 64 receives the pivot bearing 62. About the pivot bearing 62, the plate 48 can tilt downwards, that is, with the toe tilt down or in other words tilt with the heel up. As the heel can be raised and lowered, the upper ankle can also be moved. This corresponds to the natural one Running and / or sprinting movement of man. An operator can optimally transfer his muscle power to the skate, which can increase the driving speed.

Alternatively, however, of course, a rigid attachment is possible, as well as the interchangeability of the individual elements such as shoe 44, damping device 18, roller carrier 16 and number of rollers 10a-d or additional spring elements 58 across all embodiments can be combined with each other arbitrarily to even more Design variants.

In Figure 7 shows the tilted forward position of the plate 48th nach dem

Lifting can also be seen a plate-like stopper 66, which is an extension of the bearing block 64.

As in this embodiment, it is always desired also in the other embodiments that the two arcuate portions of the damping element 20, which extend from the central, either on the roller support 16 or directly or indirectly attached to the shoe portion to the outside to the ends 24, 26, as long as possible. This is intended to increase the spring and damping effect. The central portion is a kind of clamping point of the damping element 20, which contributes nothing to the damping and should therefore be as short as possible.

In the embodiment of Figure 8a, the spring element 58 has been omitted in comparison to the previous embodiment. Instead of the pivotable plate 48, this could also be rigidly secured to the damping element 18, as shown by broken lines.

In Figure 8b, the damping element 20 is shown without plate 48. In the region of the arc center 22, a click closure 51 is provided, as already described with respect to the first embodiment. The click closure 51 can either receive the plate 48 or the shoe 44 can be attached directly thereto. For this purpose, the shoe 44 must have a corresponding counterpart. The damping element 20 is reinforced in particular in the bow center 22 when the shoe is mounted directly on this. - IO -

In Figure 9 can be seen the bearing mounting 54, which is slightly modified from the previous embodiment wider than the damping element 20 is executed, so that the bearing attachment 54, the billowing 24, 26 on all sides surrounds. In particular, the bearing fasteners 54 are attached.

It is preferred that the damping element 20 or the entire

Damping device 18 is non-destructively detachable from the rest of the skate to be replaced in case of failure or to use other damping devices 18 with different damping or spring properties.

The embodiment according to FIGS. 10 and 11 essentially corresponds to the embodiment according to FIG. 8, but instead of a damping element 20, two arcuate damping elements 20 which are arranged next to each other and even parallel in the longitudinal direction of the shoe L are provided. These damping elements 20 are coupled to each other via the common bearing attachment 54, optional intermediate webs 68 and the shoe attachment 46.

In this embodiment, a further variant of the shoe attachment 46 is indicated by the shoe attachment 46 has two clamping body 70 here. Between the clamping bodies 70, the damping elements 20 are clamped.

Of course, this embodiment is arbitrarily combinable with the previous embodiments, be it with regard to the shoe attachment 46, the attachment of a soft or hard boat, the attachment of additional spring elements 58 and similar features already mentioned above.

In general, it should be emphasized that the skate shown so far although as

Inline roller skating is executed, but not limited thereto. Instead, as in a classic roller skate, two parallel rows of rollers may be provided, this applies to all embodiments described above and subsequently.

Only purely by way of example is to call this figure 12, which in the

Embodiment of Figures 10 and 11, a front and a rear pair of rollers with rollers 10a and d shows. - Ib -

Of course, more than two rollers or pairs of rollers arranged one behind the other can be realized in the embodiment facing downwards with the bow ends 24, 26, as is outlined for example in FIGS. 13 and 14. A bearing mount 54 in this embodiment serves to secure two successively arranged rollers 10a, b or 10c, d.

In the embodiment of Figure 15 of the shoe 44 is pivotally mounted on the skate that in the ball area, a ground contact and thus a repulsion as a skate is possible. The pivot bearing bears the reference numeral 72. Again, the shoe 44 may be a fixed unit of the skate or releasably attached to a plate 48. Below the shoe tip or the shoe ball on the shoe 44 and on the plate 48, a repelling part 74 is mounted in the form of a plastic element. The shoe 44 or the plate 48 can only be tilted forward. To the rear acts a stop, similar to that already explained in connection with Figure 7. In this embodiment, the shoe 44 together with the plates 48 extends between two parallel damping elements 20th

In the embodiment according to FIG. 16, the arcuate damping element 20 is mounted so as to be movable in a limited manner on a hinge 76 on the rear end viewed in the direction of travel. The hinge 76 is formed, for example, as the pivot bearing described in detail with respect to the first embodiment, to which reference is hereby made. Connected to the hinge 76 is an elongated plate 78, via which the damping element 20 can be fastened to the roller carrier 16. The shoe fastener 46 (not shown) is connected to the cushioning member 20 so that the shoe 44 overlies the bow center 22 in the area between the shoe center and the ball of the foot. The shoe fastener 46 may include two clamp bodies 70 as shown in Figure 10, with the clamp bodies 70 secured to the curved cushioning member 20 or the shoe attachment being e.g. Screws that go through the upper portion of the damping element 20 or there provided a quick release.

Of course, the hinge 76 could also be connected directly to the roller carrier 16 (see, eg) or, if appropriate, be part of the roller carrier 16. Also, the damping element 20 could be connected to a torsion spring or a torsion bar (n. Signed), which may contribute to the spring action.

FIG. 17 shows a further embodiment. This differs from the embodiment shown in Figure 16 only in that an additional shock absorber 80 is provided. The (for example pneumatic)

Shock absorber 80 allows a longitudinal displacement of the damping element 20 and thus allows deformation of the damping element 20th

Another embodiment of the skate is shown in FIG. The damping element 20 functions here, similar to e.g. Shown in Figure 8a, as a roller carrier 16. The shoe 44 is attached via attachment points 82 on the damping element 20. In particular, two fastening points 82 are provided, which are located at the transition from the center of the bend 22 to the bow ends 24, 26. The shoe 44 is movable in the longitudinal direction L to allow deformation of the damping element 20. For this purpose, one or more slots 84 are provided on the damping element 20, into which an extension 86, which is part of the shoe attachment 46, can engage. In the embodiment shown (seen in the longitudinal direction L) front a slot 84 is provided and (seen in the longitudinal direction L) behind a hinge 76, which is formed for example as a pivot bearing.

Although Figure 18 shows two attachment points 82, of course, more attachment points could be provided.

It must again be emphasized that the location and sizes of the

Damping elements 20, which for example concerns the chord length I, the orientation of the bow ends 24, 26 and the bow center 22 or the bow height h, preferably in all embodiments is dimensioned as described in more detail with reference to the first embodiments.

It can also run with the roller skate shown other curve techniques by body weight change already a turning of the rollers is possible. This applies in particular to the embodiments according to FIGS. 12 and 13.

Claims

claims

1. roller skate, in particular roller skate, with at least one front and at least one rear roller (10a, 10d) provided with bearings (12), a roller carrier (16), a shoe attachment (46) and a damping device (18) , which is provided between the shoe attachment (46) and the bearings (12), characterized in that the damping device (18) only one in the shoe longitudinal direction (L) extending, arcuate damping element (20) or more in the shoe longitudinal direction (L) seen side by side , arcuate damping elements (20), which is arranged in the side view of the roller skate centrally on the skate / are, wherein the arcuate damping element (20) is deformed under a vertical force elastic under the assumption of another arc shape.

2. Roller skate according to claim 1, characterized in that the damping element (20) occupies a curved shape with a larger radius during deformation.

3. Skate according to claim 1 or 2, characterized in that the

Damping element (20) has a chord length (I), which corresponds at least approximately to the length of the attached shoe (44).

4. Roller skate according to claim 3, characterized in that the damping element (20) has a chord length (I) which corresponds to at least 80% of the axial distance (a) between the foremost and the rearmost roller (10a, 10d).

5. Skate according to one of the preceding claims, characterized in that the damping element (20) is a continuously curved arc extending.

6. Skate according to one of the preceding claims, characterized in that the damping element (20) is a leaf spring-like body.

7. Skate according to one of the preceding claims, characterized in that the damping element (20) is a one-piece body.

8. Skate according to one of the preceding claims, characterized in that a plurality of laterally interconnected damping elements (20) are provided.

9. Skate according to one of the preceding claims, characterized in that the damping element (20) bow ends (24, 26), wherein the bow ends (24, 26) lie substantially in a common horizontal plane (E ₁ ).

10. Roller skate according to one of the preceding claims, characterized in that the center of the arc is in side view on an area between the ball of the foot and shoe center.

11. Roller skate according to one of the preceding claims, characterized in that the center of the arc is in side view substantially on shoe center.

12. Roller skate according to one of the preceding claims, characterized in that the sheet is mounted horizontally, wherein the two bow ends (24, 26) either shoe or roller side and the bow center (22) in reverse role or shoe side are attached / is.

13. Skate according to one of the preceding claims, characterized in that in the region of the center of the arc, a fastening device (28) for holding the shoe (44) is provided.

14. Roller skate according to one of claims 1 to 8, characterized in that in the region of an arc end (24), a fastening device (28) for holding the shoe (44) is provided.

15. Roller skate according to claim 14, characterized in that the bow end (24) is in side view on an area between the ball of the foot and shoe center.

16. Skate according to one of claims 1 to 12, characterized in that fastening points (82) are provided, which are provided at the transition from the sheet center (22) to the bow ends (24, 26).

17. Skate according to claim 16, characterized in that, the connections between the damping element (20) and the adjacent

Part in the longitudinal direction (L) are designed to be movable.

18. Roller skate according to one of claims 1 to 13, 16 and 17, characterized in that the bow ends (24, 26) point downwards and form the roller-side end of the damping element (20).

19. Roller skate according to claim 18, characterized in that on the

Bow ends (24, 26) bearing fasteners (54) for the rollers (10) are mounted.

20. Skate according to one of claims 1 to 13, 16 and 17, characterized in that the bow ends (24, 26) facing upward and at least one end of the sheet (24, 26) is displaceable.

21. Skate according to claim 20, characterized in that the displaceable sheet end (24, 26) in a guide (34) is guided.

22. Roller skate according to claim 21, characterized in that the Seh u h fastening u ng (46) with the guide (34) is coupled.

23. Roller skate according to one of the preceding claims, characterized in that vertical forces are transmitted exclusively via the bow ends (24, 26) of the damping element (20).

24. Skate according to one of the preceding claims, characterized in that the entire vertical force between the shoe attachment (46) and the bearings (12) via the damping element (20) is transmitted.

25. Skate according to one of the preceding claims, characterized in that the sheet height (h) in the unloaded state is at least 50 mm, preferably at least 65 mm.

26. Roller skate according to one of the preceding claims, characterized in that at least one sheet end (24, 26) is accommodated in a displaceable pivot bearing.

27. Skate according to one of the preceding claims, characterized in that the damping element (20) non-destructively releasably in the

Roller skate is integrated.

28. Skate according to one of the preceding claims, characterized in that the roller skate only two rollers (10).

29. Roller skate according to one of the preceding claims, characterized in that the damping device (18) also forms the roller carrier (16).

30. Roller skate according to one of the preceding claims, characterized in that a the sheet ends (24, 26) connecting the spring element (58) is provided.

31. Skate according to one of the preceding claims, characterized in that the shoe attachment (46) for releasably attaching various shoes (44) is formed on the skate.

32. Roller skate according to one of the preceding claims, characterized in that a shoe (44) is pivotally mounted on the skate.

33. Roller skate according to claim 32, characterized in that the shoe

(44) is pivotally mounted on the skate so that it allows ground contact in the ball area.