EP1395346A1

EP1395346A1 - Roller-skate unit

Info

Publication number: EP1395346A1
Application number: EP02729754A
Authority: EP
Inventors: Stefan Stamm
Original assignee: Ingenieurteam Stamm AG
Current assignee: Ingenieurteam Stamm AG
Priority date: 2001-06-14
Filing date: 2002-06-13
Publication date: 2004-03-10
Also published as: WO2002102480A1

Abstract

The invention relates to a roller-skate unit comprising at least one roller skate that can be motor-driven, e.g. an inline skate (1), which is provided with a friction drive. A friction wheel (16), which interacts with at least one of the rollers (4) of the roller skate, by means of (preferably lateral) friction zones (11), is located on the shaft (15) of the motor (14). The motor (14) is supplied with a power source (27) by means of a control unit (26). Commercially available roller skates can be provided with the friction drive without the need for large-scale modifications to the existing product. The conventional rollers (4), in particular, can be incorporated without modification and can be easily replaced. The invention discloses various embodiments and the unit can be used for various roller-skate products, e.g. conventional roller skates, roller boards, kick boards, scooters etc.

Description

Engineering team Stamm AG, Lucerne

Roller skating facility

The invention relates to a roller skate device with at least one motor-driven roller skate and a control unit acting on the motor.

First of all, it is pointed out that the term “roller skate” is to be understood in a broad sense in connection with the invention and is also intended to include, for example, those with single-track rollers (so-called inline skates).

In order to offer roller skaters more enjoyment while driving or to facilitate locomotion, various proposals for a motor drive have already become known;

According to PCT publication WO 96/20762, a drive unit is provided, which is mounted on the heel end of a roller skate. The drive comprises an electric motor, which is connected to a separate drive wheel via a bevel gear or belt transmission. This is mounted below the motor on a swivel arm, which is articulated on the roller skate chassis and enables the drive wheel to be lifted off the driving surface.

From US-A-5 236 058 and US-A-5 797 466 roller skates with small internal combustion engines mounted on their chassis are known. The power transmission from the engine takes place via a Belt or belt and gearbox on a wheel mounted next to a roller on its axle.

EP-A-0 829 283 shows a "rough" roller skate with two laterally arranged, endless races. On a chassis between them there is an electric motor with battery and reduction gear, via which the drive shaft for the raceways is driven.

An inline skate roller skate is also known from WO 00/35542, the rollers of which are themselves provided with permanent magnets and each form the rotor of an electric motor. The respective stator is formed by electromagnetic coils, which are attached to each roller (rotor) on the chassis and are cyclically excited.

A disadvantage of the aforementioned known roller skate devices is that they are actually very complex special constructions. In addition, special versions are required as rollers (at least the driven ones), and since they are wearing parts, their distribution must be ensured; the replacement of worn rollers is therefore costly and complicated.

The invention has for its object to provide a roller skate device of the type mentioned, the motor drive can be realized with simple means and in which the 'drive power is transmitted to the rollers as effectively as possible. Above all, the commercial rolls should also be able to be used.

This object is achieved according to the invention in that there is a friction wheel connected to the motor shaft, which is arranged to act on at least one roller of the roller skate.

With the invention, a possibility is created to transfer the driving force of the motor directly to one of the existing and commercially available rollers of the roller skate; on a separate, additional drive wheel with ground contact is not required. Such a friction wheel drive can be attached to existing inline skates, for example, as a kind of additional module without having to be significantly modified or even redesigned. This means a significant simplification of series production, as models can be produced with or without a drive as required. But it is also possible to retrofit roller skates already in use with the drive, whereby only minor changes need to be made to the existing product. An important advantage achieved with the invention is that the normal rollers used in roller skates are used unchanged, even for the rollers driven by the friction wheel. The storage of the rollers is also not changed, and no additional means (for example gear wheels fixed on the roller axis) are required. This means that worn out rollers can be replaced as before and without additional effort.

At this point it should be expressly mentioned that both roller skates of a pair can of course be provided with the drive according to the invention or just one (right or left) roller skate.

Various exemplary embodiments of the invention are explained in more detail below in connection with the drawing. All of the described and / or illustrated features, alone or in any combination, are part of the subject matter of the invention, irrespective of their connection in the claims or the relationship of the claims.

1 shows a first embodiment of a roller skate device according to the invention in side view,

Fig. 2 shows the device in vertical section along the line II-II in Fig. 1, 3 is a top view (partially sectioned) of a second embodiment,

Fig. 4 is a vertical section through the device of Fig. 3 along the line IV-IV, and

Fig. 5 illustrates a third embodiment as a top view (partially cut).

The roller skate device 1 according to FIGS. 1 and 2 is based on a so-called inline skate roller skate, the four rollers 4 of which are mounted one behind the other on a chassis 3 (roller carrier) in the running direction. The chassis 3 essentially has the cross section of an inverted U, with the side walls 6 and the top surface 5, which is set up in a known manner for connection to a shoe (not shown). The bearings or axes 7 of the four rollers are located at the same height above the floor 2 on a straight line 9.

Two plates 18, which are each arranged outside the chassis side walls 6 and are rigidly connected to one another by means of spacers 19, serve as the supporting structure for the drive of the roller skate, designated as a whole by 12. A motor 14 is mounted on one plate 18 - on the right in FIG. 2 - the motor shaft 15 protruding into the space between the side walls 6. A friction wheel 16 is mounted in a rotationally fixed manner on the shaft 15, the axis 17 of which is guided via a bearing 20 in the opposite plate 18. A suitable recess 8 is provided in the side walls 6 for the contact-free passage of the friction wheel axle 17.

In the present example, the friction wheel 16 has a U-shaped groove 22 with a V-shaped cross section, which is aligned with the rollers 4. The arrangement is such that the axis of rotation of the friction wheel 16 (geometric axis of the motor shaft 15 and the friction wheel axis 17) is at the same distance from the axes of rotation 7 of the two middle, adjacent rollers 4. The lateral flanks of the V-groove 22 are at the same time as the two rollers 4 mentioned on lateral circumferential zones 11 thereof H ss: CΛ σ cn N a., - 03 eel → rt a ω

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a control unit 26 is switched, which is to be operated by the driver. Instead of a wired control, a conventional wireless remote control is also conceivable. The controller 26 will primarily affect the driving speed by changing the engine speed or by simply switching the engine on and off. The motor can also be operated as a generator and thus achieve a braking effect; with the generated power e.g. a signal light is operated or energy can be recovered. For braking purposes, it is also conceivable to reverse the polarity or to brake the motor while reducing its power.

To protect the motor 14 projecting laterally from the roller skate, a housing (not shown) or a protective bracket can be provided; such a protective member preferably has a slippery profile and can be mounted on the relevant plate 18 or side wall 6.

As can be seen, the equipment or retrofitting with the friction wheel drive can be carried out very easily, with only insignificant changes to the roller skate itself. In particular, there are no additional transmission means such as complex gears and the wear and loss of power caused thereby.

The further exemplary embodiments of roller skate devices according to the invention described below with reference to FIGS. 3 to 5 are again based on inline skates, the corresponding parts being designated with the same reference numbers as in FIGS. 1 and 2.

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Although the embodiments described with reference to the drawing relate to inline skates, the invention is also analogous to other roller skate products, e.g. conventional roller skates can be used with rollers arranged in pairs next to one another, and also with roller boards, kickboards, scooters (scooters), etc.

Claims

claims

1. Roller skate device with at least one motor-driven roller skate (1) and a control unit (26) acting on the motor (14), characterized in that a friction wheel (16, 32, 40) connected to the motor shaft (15, 15 ') is present which is arranged to act on at least one roller (4) of the roller skate (1).

2. roller skate device according to claim 1, characterized in that the friction wheel (16, 32) is simultaneously arranged on two rollers (4) of the roller skate (1) acting.

3. roller skate device according to claim 2, characterized in that in an inline skate, the friction wheel (16, 32) is arranged such that it contacts the two middle rollers (4).

4. Roller skate device according to one of claims 1 to 3, characterized in that the friction wheel (16) has a U catch groove

(22) with a V-shaped cross section, the side flanks of which are in frictional contact with the lateral peripheral zones (11) on the at least one roller (4).

5. Roller skate device according to one of the preceding claims, characterized in that the friction wheel (16, 32) sits directly on the motor shaft (15, 15 ').

6. Roller skate device according to one of the preceding claims, characterized in that the motor (14) laterally on the chassis (3) of the roller skate (1) with the axis (7) of the rollers (4) parallel or vertically inclined motor shaft (15, 15 ' ) is attached.

7. roller skate device according to one of the preceding claims, characterized by a motor (14) and the friction wheel (16) comprehensive drive unit (12), the purpose of adjusting and / or maintaining the frictional connection relative to the chassis (3) of the roller skate (1) adjustable is.

8. roller skate device according to one of claims 1 to 6, characterized in that the friction wheel (32, 40) on its shaft (15 ', 36) slidably mounted and is held by means of spring force (34) against the at least one roller (4)

9. roller skate device according to claim 1, characterized in that the friction wheel (40) independently of the motor (14) on the chassis (3) of the roller skate (1) and driven by the motor shaft (15) via a spring clutch (38) or a belt is.

10. roller skate device according to claim 9, characterized in that the motor (14) is attached to the side or rear of the chassis (3) of the roller skate (1), the motor shaft (15) lying in a plane parallel to the direction of travel or transverse thereto.

11. Roller skate device according to one of the preceding claims, characterized in that the motor (14) is an electric motor, preferably a direct current motor.

12. roller skate device according to claim 11, characterized in that the control unit (26) is designed for an optional generator operation of the engine.