EP3170538A1 - Sports device with chain drive - Google Patents

Abstract

Hereby, a sports device with a chain drive is proposed, wherein the chain links are bevelled or flexible.

Description

The invention relates to a sports device, in particular skateboard, according to the preamble of claim 1.

From the prior art is from the document US 4,337,961 a skateboard with a chain drive known. The problem here, however, is that when cornering a relatively large resistance, so that the drive slowed down significantly or the surface could be damaged.

It is therefore an object of the present invention to provide a sports equipment available, which does not have the disadvantages of the prior art and in which in particular an improved cornering is possible.

This object is achieved with the sports equipment according to claim 1.

According to the invention, the sports equipment, in particular a skateboard, a chain drive with chain links, wherein the chain links are at least partially bevelled and / or at least partially formed flexible.

Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features specified in the description, the claims and / or the figures also fall within the scope of the invention. For specified value ranges, values lying within the limits mentioned should also be disclosed as limit values or be claimable in any combination.

It is the gist of the invention that, when cornering, the contact surface of the chain links contacting the ground is minimized by the chamfer or flexibility of the chain links, so that also the resistance during cornering can be reduced to the minimum. As a result, the ride is hardly braked and the substrate can be spared. In addition, the wear of the chain links is reduced.

The steering of the sports device can be done, for example, by shifting the weight of the user like a skateboard. But there are also other steering options conceivable. The chain links can be made of any material, for example wood, metal, plastic and / or rubber, but also of other materials. The chain links can also be formed from a plurality of materials. The sports equipment may have other components, such as a frame to which a support board may be attached, on which the user can stand.

According to the invention, the chain links can be chamfered at least in regions or at least partially bevelled or at least partially chamfered and at least partially flexible.

According to a preferred embodiment, the chain links have slanted regions and / or elastic regions laterally at their ends. In the following, the term "flexible and elastic" is used interchangeably. Alternatively, the chain links may be formed completely beveled and / or formed completely flexible. In particular, the beveled regions and / or the elastic regions of a chain link can be formed identically. In a very particular embodiment, all chain links are identical.

In particular, the bevelled areas can be angled to the horizontal, preferably with an angle of> 1 °, more preferably> 5 °, most preferably> 10 °, even more preferably> 15 °, most preferably> 20 °.

In a particularly preferred embodiment, the bevelled areas are round. For example, a circular design can mean that they are circular or elliptical, at least without edges or corners.

In another embodiment, it is provided that the chamfered areas are formed tapering outwardly. As a result, the resistance is particularly efficient reducible.

In particular, the chain links may have in the center a horizontally extending section with a horizontally extending surface. One or more bevelled and / or elastic regions may adjoin this portion outwardly. This horizontal section advantageously allows good contact with the ground and thus improved power transmission. In particular, it may be provided that the length of the chamfered areas of a Chain link is greater than the length of the horizontal section. As a result, the resistance can be reduced to a minimum when cornering.

In another embodiment, the sports equipment on a conical barrel roll. In particular, the barrel roller can taper towards its two ends. The sports equipment can also have several barrel rolls. The barrel roller can be arranged in particular with its longitudinal axis perpendicular to the longitudinal axis of the sports equipment. In addition, in particular their two ends can be flush with the outer end of the chain links. With conical is meant tapering or tapering. The chain links can rest in particular only on a part of the surface of the barrel roller. It should be noted that at a certain time in operation only a part of the chain links at all comes into contact with the barrel roller and the other chain links are not in contact with the barrel roller. When driving straight ahead, the chain links that contact the barrel roller at the time contact the barrel roller in its central area. When cornering the chain links are on the side of the respective tapered end of the barrel roll. In other words: when cornering to the right, the chain links rest on the right-hand conical end of the barrel roller, and when cornering to the left, the chain links rest on the left-hand conical end of the barrel roller.

In particular, it is provided that the barrel roller is arranged in the rear direction, whereby an improved steering is possible. If the sports equipment can drive both backwards and forwards, then a barrel roller is arranged both at the rear and at the front, so that optimal steering is possible in both directions of travel. In particular, the barrel roller contacts the chain links with its lower surface, wherein the barrel roller is arranged above the chain links which contact the ground.

In another embodiment, the sports equipment on a circulating belt, which is provided with a plurality of chain links. The band is elastic and flexible; Likewise, the chain links are elastic and flexible. The chain links are designed to be resilient and pliable so that, when the user displaces the weight, the chain links may be bent to reduce the contact surface between the ground and the chain links. As a result, the frictional resistance during steering can advantageously be considerably reduced, so that the energy expenditure can be advantageously reduced. Incidentally, reference is made to the above statements.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

Figur 1

zeigt eine erste Ausführungsform der vorliegenden Erfindung,

Figur 2

zeigt eine zweite Ausführungsform,

Figur 3

zeigt die Ausführungsform aus Figur 2 in einer Seitenansicht bei Geradeausfahrt,

Figur 4

zeigt die Ausführungsform aus Figur 2 bei einer Kurvenfahrt,

Figur 5a

zeigt eine dritte Ausführungsform der vorliegenden Erfindung in einer perspektivischen Ansicht von hinten bei Geradeausfahrt,

Figur 5b

zeigt die dritte Ausführungsform in einer Seitenansicht und

Figur 5c

zeigt die dritte Ausführungsform in einer Seitenansicht bei einer Kurvenfahrt.

The figures show schematically:

FIG. 1

shows a first embodiment of the present invention,

FIG. 2

shows a second embodiment,

FIG. 3

shows the embodiment FIG. 2 in a side view when driving straight ahead,

FIG. 4

shows the embodiment FIG. 2 when cornering,

FIG. 5a

shows a third embodiment of the present invention in a perspective view from behind when driving straight ahead,

FIG. 5b

shows the third embodiment in a side view and

FIG. 5c

shows the third embodiment in a side view when cornering.

In the figures, identical and / or equivalent elements are denoted by the same reference numerals.

FIG. 1 schematically shows a part of a sports equipment 1 in a perspective view from above according to a first exemplary embodiment.

The FIG. 1 shows a chain drive for the sports equipment 1 with a plurality of interconnected chain links 2, which are arranged parallel to each other in series and rotate about a roller 4 and other rollers, not shown. The FIG. 1 shows a rear portion of the sports equipment 1, wherein the sports equipment 1 can move in the direction of travel F shown with the arrow or moves. The chain links 2 have centrally a horizontally aligned region 5, with which the chain links 2 touch the substrate, not shown. Beveled or rounded areas 3 are arranged at the two lateral ends of the chain links 2.

As soon as the weight for cornering is shifted, for example, to the rear left, the chain drive rotates to the left on the rounded areas 3, whereby the contact surface with the ground is considerably reduced. Now, the direction change can take place simply because the chain drive must be rotated only by a relatively small area. FIG. 2 shows a part or a chain drive of a sports equipment 1 according to a second exemplary embodiment. In this embodiment, the interconnected chain links 20 are flexible or elastic, at least in its two ends. The chain links 20 have flexible or elastic regions 21 (see FIG. 4 ). In the rear area, that is to say that area which faces away from the direction of travel F, an upper roller 40 and a barrel roller 30 arranged at the bottom are arranged. In addition, two wheels 50, 51 are indicated by way of example, over which the chain links 20 are continued. The chain links 20 thus rotate around the rollers 40, 30, 50 and 51 during operation.

The barrel roller 30 is tapered toward both ends so as to taper toward its outer ends. Reference numeral 31 designates an end face 31 whose cross section is smaller than the cross section of the barrel roller in the central region. The barrel roller 30 contacted in the straight ahead (see FIG. 3 ) With its central region, the chain links 20, so that an optimal power transmission between the barrel roller 30 and the chain links 20 is possible. The chain links 20 are arranged parallel to one another in this embodiment also in succession.

FIG. 3 and FIG. 4 show the sports equipment 10 in a side view. In the FIG. 3 is the straight ahead in the direction of travel F shown. In the FIG. 4 a turn to the right is shown. By the weight shift to the right, for example by the user, the chain links 20 are bent in the bent portions 21, so that the bent portions 21 abut against the conical ends of the barrel roller 30. The sports equipment 10 tilts on the bent portions 21, whereby the contact surface and the frictional resistance between Chain links and underground are minimized. Incidentally, the above comments on the FIGS. 2 to 3 directed.

FIG. 5a shows a third embodiment of the present invention in a perspective view from behind when driving straight ahead in the direction F. FIG. 5b shows the third embodiment in a side view and FIG. 5c shows the third embodiment in a side view when cornering.

In this embodiment, the sports equipment 100 comprises a revolving belt 6 which is provided with a plurality of chain links 200. The band 6 is elastic and flexible; Likewise, the chain links 200 are elastic and flexible.

In the rear region, that is to say that region which faces away from the direction of travel F, an upper roller 40 and a barrel roller 30 arranged at the bottom are arranged. In addition, by way of example, two wheels 50, 51 connected via an axle 52 are indicated, via which the chain links 20 are continued. The chain links 200 rotate or the circulating belt 6 thus rotates around the rollers 40, 30, 50 and 51 in operation.

The barrel roller 30 is tapered toward both ends so as to taper toward its outer ends. Reference numeral 31 designates an end face 31 whose cross section is smaller than the cross section of the barrel roller in the central region. The barrel roller 30 contacted in the straight ahead (see FIG. 5a and 5b ) With its central region, the chain links 200, so that an optimal power transmission between the barrel roller 30 and the chain links 200 is possible. The chain links 200 are also arranged parallel to each other in this embodiment in succession.

In the FIG. 5c a turn to the right is shown. By the weight shift to the right, for example by the user, the chain links 200 are bent in the bent portions 21, so that the bent portions 21 abut against the conical ends of the barrel roller 30. The sports equipment 100 tilts on the bent portions 21, whereby the contact surface and the frictional resistance between chain links and ground are minimized. Incidentally, the above comments on the FIGS. 5a and 5b directed.

LIST OF REFERENCE NUMBERS

1, 10, 100

Sports equipment

2, 20, 200

chain links

21

flexible area

3

bevelled area

30

conical barrel roll

31

face

4, 40

role

5

horizontal surface / horizontal section

50, 51

bikes

52

axis

6

circulating band

F

direction of travel

Claims (15)

Sports device (1, 10, 100), in particular skateboard, comprising a chain drive with chain links (2, 20, 200), wherein the chain links (2, 20, 200) at least partially bevelled and / or at least partially flexible formed. Sports equipment (1, 10, 100) according to claim 1, characterized in that the chain links (2, 20, 200) have laterally at their ends bevelled areas (3) and / or flexible areas (21). Sports device (1, 10, 100) according to claim 2, characterized in that the chamfered and / or flexible regions (3) are identical. Sports apparatus (1, 10, 100) according to claim 2 or 3, characterized in that the chamfered regions (3) are angled to the horizontal, preferably with an angle> 1 °, more preferably> 5 °, most preferably> 10 ° , even more preferably> 15 °, most preferably> 20 °. Sports device (1, 10, 100) according to one of claims 2 to 4, characterized in that the chamfered regions (3) are round. Sports device (1, 10, 100) according to one of claims 2 to 5, characterized in that the chamfered areas (3) are formed tapering outwardly. Sports device (1, 10, 100) according to any one of the preceding claims, characterized in that chain links (2, 20, 200) have centrally a horizontally extending section (5) with a horizontally extending surface. Sports equipment (1, 10, 100) according to claim 7, characterized in that per chain link (2, 20, 200), the length of the two chamfered portions (3) is greater than the length of the horizontal portion (5). Sports device (1, 10, 100) according to any one of the preceding claims, characterized in that the chain links (2, 20, 200) are formed elastically at least at their ends. Sports equipment (1, 10, 100) according to one of the preceding claims, characterized in that the sports equipment (1, 10, 100) has a conical barrel roller (30). Sports equipment (1, 10, 100) according to claim 10, characterized in that the barrel roller (30) tapers towards its two ends. Sports equipment (1, 10, 100) according to claim 10 or 11, characterized in that the chain links (2, 20, 200) rest only on a part of the surface of the barrel roller (30). Sports equipment (1, 10, 100) according to any one of claims 10, 11 or 12, characterized in that the barrel roller (30) in the direction of travel (F) is arranged behind. Sports equipment (1, 10, 100) according to any one of claims 10 to 13, characterized in that the barrel roller (30) contacts the chain links (2, 20, 200) with its lower surface. Sports equipment (1, 10, 100) according to one of the preceding claims, characterized in that the sports equipment (1, 10, 100) comprises a circumferential elastic and flexible band (6) which is provided with a plurality of elastic and flexible chain links (200). is provided.

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