FR2822389A1 - Braking device for skate board comprises two rotating plates which by inclining rearwards pull cables connected to calipers comprising jaws applied to brake discs fixed to wheels - Google Patents

Abstract

The braking device comprises two rotating plates (2) connected to a fixed chassis (1) by rotational axes (4) perpendicular to the board. The plates by inclining rearwards pull on cables (6) connected to calipers (7) comprising jaws (11) which are applied on disc (9) fixed to the wheels (10). Steering of the wheels is assured by ball joints (5).

Description

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 The present invention relates to a device for actuating a braking system of a skateboard, which combines the directivity by lateral displacement of the center of gravity of the user, a tilting system of trays allowing rapid use. and efficient braking system ensuring increased safety and pleasure for the user.

 Prior patents such as that of WO 01/08759 A1 or of FR 2 706 781 A1 propose a skateboard braking system which requires action on the rear part of the board forcing the user to move his center of gravity towards the Rear, which for hard sliding sports such as skateboarding or snowboarding on the piste, is detrimental to steering control. In addition, braking takes place on only one axle, which under-exploits the potential for deceleration. Other systems offer braking by moving a foot, which in all terrain is excluded, the feet having to be fixed to the board to avoid ejection during bumps.

 The purpose of this device is to keep the center of gravity of the user at the center of the skateboard, ensuring optimal control of the steering and the intensity of braking. It also makes it possible to activate the braking of the four wheels, see rear or front wheels separately. On the other hand, the simplicity of the device, a guarantee of robustness, will allow an easy and inexpensive industrial application.

 For this, the skateboard consists of a fixed central part: the chassis, which can be of different shapes or materials, the sole purpose of which is to ensure a rigid and solid connection between the front and rear part of the board on casters.

 The user's feet are fixed on movable trays which allow rotation from front to back and from back to front relative to the longitudinal axis of the skateboard.

 These moving parts or plates, by their rear rotations, actuate a braking system which can be of different designs: either on the axis of the wheels, or on the wheels, drums, discs or other. Thus the user by tilting the plates will brake, while keeping the directivity by leaning in the direction he wishes to take.

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According to particular embodiments:
The particular braking system chosen and implemented is the known disc brake system which combines solidity, efficiency and resistance to heating.

 - Mechanical or hydraulic disc brakes can be placed on the wheels.

 - The rear rotation of the chainrings can pull on cables which will activate the braking system.

 - The cables can be fixed to the front of the mobile platforms.

 - The upward movement of the chainrings can be ensured by springs included in the disc brake caliper.

 - The axes of rotation under the plates can be located at half the width of the latter.

 - Stirrups can be placed at the end of the horizontal axles intended for fixing the wheels.

 - Each of the plates can be independent, the user can then brake the rear or front wheels or both.

 - Stops can block the plates in a rest position.

 - The cable stops can be fixed on the central part of the skateboard.

 The accompanying drawings illustrate the invention according to particular embodiments.

 Figure 1 is a side view of the rear axle of the skateboard.

 Figure 2 is a top view of the skateboard.

 Figure 3 is an overview of the profile of the skateboard.

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 With reference to these drawings, the device comprises a central part, or rigid and solid chassis (1) under which the traditional ball joints (5) make it possible to take over the steering. Movable plates (2), on which will be placed the fasteners (3) for the feet of the user, are attached perpendicular to the frame (1) by axes of rotation (4).

 The trays, tilting backwards, pull on cables (6) and springs (12) which press jaws (11) on discs (9) integral with the wheels (10).

 The brackets (7) comprising the springs and the jaws are fixed to the ends of the wheel axles (8).

 The skateboard is mainly designed for all terrain environments because of the size of the wheels that are outside the platforms and the fixing of the feet on them.

 By way of nonlimiting example, the wheels could be 20 cm in diameter, the skateboard 60 cm long, 30 cm wide. The materials will preferably be light and very resistant (carbon, aluminum, composite materials).

Claims (7)

CLAIM 1) Device for braking the movement of a skateboard and its user, characterized by the fact that the braking is triggered by the rear inclination of mobile plates mounted perpendicular to a fixed frame. 2) Device according to claim 1 characterized in that the braking system is actuated by cables fixed to the front of movable plates. 3) Device according to any one of claims 1 or 2 characterized in that the rotational movement of the plates backwards pulls on cables which will bring the jaws closer to discs secured to the wheels. 4) Device according to any one of the preceding claims, characterized in that the calipers of the disc brake system are fixed to the ends of the wheel axles. 5) Device according to any one of the preceding claims, characterized in that the axis of rotation of the mobile plates are placed in the center of the latter. 6) Device according to any one of the preceding claims, characterized in that stops block the plates in a rest position. 7) Device according to any one of the preceding claims, characterized in that each of the plates is independent.