A motorized personal transport device for transporting a person wearing a pair of electrically assisted motorized shoes.

Abstract

Walking acceleration equipment consisting of a pair of skates having means of connection with a shoe and two tracks driven by an electric motor controlled by an electronic circuit, characterized in that: said motor is an external rotor motor and in that the plate is associated with a chassis having: a hollow central part, two rear arms spaced apart for fixing the stator of said electric motor and, on both sides, lateral flanges supporting the axes of the guide rollers of said tracks, and in that each track has a raised front lower part (38). Figure 1

Description

Title of the invention: Motorized personal transport device for transporting a person wearing a pair of electrically assisted motorized shoes. Field of the invention

[0001] The present invention relates to the field of pedestrian mobility, and more particularly to motorized accessories that can be attached under the sole of shoes, in the manner of motorized roller skates allowing the walking speed to be increased while maintaining a walking movement and not a skating movement. Many solutions for motorized roller skates and roller skates have been proposed in the prior art, the invention relates more particularly to the family of solutions designed to complement the natural walking movement by providing a limited increment, selected by the user, to the normal walking speed which is always in response to the user's walking intention. State of the art

[0002] Patent US9925453B1 describes a motorized personal transportation device for transporting a person wearing a pair of electrically assisted motorized shoes, used in a normal forward walking action that provides an additional walking speed adjusted based on a user's intended walking speed. The sole of each of the shoes houses a relatively rigid plate coupled to conveyor assemblies in the toe and heel sections, respectively, which are connected by a relatively flexible portion. The assembly is designed to neutralize forces acting to disrupt its operation during walking while the flexible portion helps to naturally flex the shoe to maintain the natural balance and movement of walking.

[0003] Patent FR2955780 relates to a motorized means of individual urban transport. It consists of a pair of rolling shoes, or, advantageously, rolling undersoles adaptable by quick attachment to the soles of a walker's shoes, which allow walking at a higher speed without modifying the rhythm or amplitude of natural walking, and this without any skating movement or run-up stroke. The rolling undersoles comprise a lateral articulation allowing natural movements of the heels relative to the tips of the feet during normal walking. The operating principle of the invention is based on the compensation of forces parallel to the ground, forward during heel strike, and backward during the final phase of the step, the undersole thus being able to roll freely while maintaining, during a normal step, the desired speed.

[0004] Utility model CN201312987 describes another example of mobility equipment having a track guided by rollers for moving a shoe attachment platform.

[0005] Patent application EP0829283 describes a shoe for a track skate having a plurality of threaded holes in the sole; a track drive mechanism attached to the threaded holes in the shoe and controlled to move the shoe on the ground by a switch in the shoe controlled by the toes and a selection switch on the base frame of the drive mechanism, the drive mechanism comprising a DC motor, a power supply, a track device, and a gear box coupled between the DC motor and the gear wheel of the track device.

[0006] Patent US7383908 proposes another solution where each shoe houses in its sole a set of electrically powered wheels, connected longitudinally by a conveyor belt extending between the heel and the toes. This assembly, inclined at an adjustable angle relative to a longitudinal line directed towards the instep, is initially in a raised position, in which it is not in contact with an underlying surface. Once lowered and actuated, the assembly causes the shoe to move forward, the shoe being in contact with the surface only through said assembly. The latter is designed to neutralize the forces acting on it and tending to interrupt its operation during walking. The sole is equipped to ensure stability by absorbing shocks. Some of these assemblies can be inclined, can pivot or not on themselves and can be retracted.All are equipped with electronic sensors. In addition, all electromechanical operations can be controlled remotely and by computer.

[0007] Patent application KR20090115246A proposes a non-motorized tracked roller skate characterized by comprising a central track guided by rollers supported by a plate fixed to the shoe attachment platform by an elastic element which can absorb or reduce the impact generated on the road surface during skating. This solution allows for skating movement on a central linear rolling zone, similar to a roller skate. Disadvantages of the prior art

[0008] The solutions of the prior art comprise an assembly of relatively complex moving parts, which are difficult to manufacture at affordable costs and with a robustness suitable for pedestrian use where the equipment is subject to significant constraints: weight of the user, shock due to the walking movement, penetration of water, dust and dirt, etc. Solution provided by the invention

[0009] In order to overcome these drawbacks, the present invention relates to walking acceleration equipment consisting of a pair of skates having means of connection with a shoe and two tracks driven by an electric motor controlled by an electronic circuit, characterized in that: • said motor is an external rotor motor • and in that the plate is associated with a chassis having: • a hollow central part, • two rear arms spaced apart for fixing the stator of said electric motor • and, on both sides, side plates supporting the axles of the rollers of guidance of said tracks, • and in that each track has a raised lower front part.

[0010] According to variants: - the lower front part forms an angle between 15° and 40° with the horizontal plane and a length of 15% to 30%. - said plate is formed by a plate, in particular a honeycomb plate, connected to said chassis with an angular and lateral adjustment means. - said chassis comprises two side plates formed by separate plates mounted on the chassis. - said chassis is made up of a single piece with two side uprights - said outer rotor of said electric motor has two notched zones for driving the tracks of the skate. - each pad has a front roller, a roller positioned at the inflection between the front part and a roller located between the roller and the notched area of ​​the outer rotor - the plate has a shoe-fitting hoop - the plate has a strap for securing a shoe - said external rotor motor comprises an epicyclic reducer.

[0011] Detailed description of a non-limiting example of embodiment

[0012] The present invention will be better understood on reading the following description, concerning a non-limiting example of embodiment illustrated by the appended drawings where:

[0013] [Fig-1] [Fig.l] represents a perspective view of equipment according to the invention, without its tracks

[0014] [Fig.2] [Fig.2] represents a side view of equipment according to the invention, without its caterpillars

[0015] [Fig.3] [Fig.3] represents a three-quarter view from below of a chassis of a equipment according to the invention

[0016] [Fig.4] [Fig.4] represents a top view of equipment according to the invention, without its caterpillars

[0017] [Fig.5] [Fig.5] represents a three-quarter view from below of a connecting plate of equipment according to the invention, without its tracks General principles of the invention

[0018] The walking acceleration equipment according to the invention consists of a pair of tracked skates.

[0019] Each pad consists of a chassis (10) associated with a plate (20), and has on each side a track (not shown in the figures) driven by notched zones (31, 32) provided on two tubular zones on either side of the surface of an external rotor of an electric motor.

[0020] These tracks are guided by rollers (33, 34, 35, 37) mounted freely to rotate on axes (13, 14, 15, 17) supported by the chassis (10).

[0021] The plate (20) has at its rear part a hoop (21) for wedging the heel of a shoe, and at its front part lights (22, 23) for the passage of a strap for holding the upper of the shoe. An adjustment zone (28) is provided for adjusting the positioning of the hoop (21). Alternatively, the heel of the shoe is held by a strap.

[0022] The front part (38) of the track is inclined to form with the horizontal an angle A of approximately 30°, preferably between 20 and 45°. This front part (38) is between the front roller (33, 34), and the following roller (35). This front part (38) extends over approximately a quarter of the length of the plate (10), over an area corresponding to the part of the sole of the foot in front of the plantar arch, in front of a line on which the plantar arch formed by the tarsal and metatarsal bones, reinforced by the muscles and ligaments, rests. Chassis structure

[0023] The chassis (10) constitutes the heart of the skate; it ensures the positioning and fixing of all the components, the transmission of forces between the shoe and the ground, and determines the rigidity and robustness of the skate. It can be made of plastic molding loaded with fibers for example, or of metal molding, in particular aluminum. It is made in a single piece or by assembling several pieces. According to an alternative embodiment, the two lateral flanges (18, 19) are formed by separate plates mounted on the chassis (10) by screwing to allow disassembly, or by any other method of fixing.

[0024] The chassis (10) has a general box shape with a central zone (40) of parallelepiped shape, intended for housing the battery and possibly the electronic circuit. The two lateral sides (41, 42) have passages of axes (53 to 58) supporting free rotating hubs (64, 66, 68) (they are only shown on one side), on which the guide rollers of the tracks are mounted. Transverse stiffeners (43, 44) ensure the stiffening and closing of the battery compartment.

[0025] Two rear wings (63) extending the side plates (18, 19) or, when these plates are separated, extending the central box, extend towards the rear for fixing the internal stator of the electric motor. Platinum

[0026] The plate (20) is formed by a honeycomb plate (29) as illustrated in [Fig.5], to combine rigidity and lightness. It is connected to the chassis by screwing, allowing lateral angular adjustment. In the example described, this adjustment is obtained by means of oblong slots provided at the front (23, 24) and at the rear (25, 26).

Claims

Claims

1. Walking acceleration equipment consisting of a pair of skates having means of connection with a shoe and two tracks driven by an electric motor controlled by an electronic circuit, characterized in that: • said motor is an external rotor motor • and in that the plate (20) is associated with a chassis (10) having: • a hollow central part (40), • two rear arms (63) spaced apart for fixing the stator of said electric motor • and, on both sides, lateral flanges (41, 42) supporting the axes of the guide rollers of said tracks, • and in that each track has a raised front lower part (38).

2. Walking acceleration equipment according to claim 1 characterized in that the lower front part (38) forms an angle of between 15° and 40° with the horizontal plane and a length of 15% to 30%.

3. Walking acceleration equipment according to claim 1 characterized in that said plate (20) is formed by a honeycomb plate (29) connected to said chassis (10) with an angular and lateral adjustment means.

4. Walking acceleration equipment according to claim 1 characterized in that said plate (20) is a honeycomb plate (29).

5. Walking acceleration equipment according to claim 1 characterized in that said chassis (10) comprises two lateral flanges (18, 19) formed by separate plates mounted on the chassis.

6. Walking acceleration equipment according to claim 1 characterized in that said chassis (10) is constituted by a single piece having two lateral uprights (18, 19).

7. Walking acceleration equipment according to claim 1 characterized in that said outer rotor of said electric motor has two notched zones (31, 32) for driving the tracks of the skate.

8. Walking acceleration equipment according to claim 1 characterized in that each shoe comprises a front roller (33, 34), a roller (35) positioned at the inflection between the front part (38) and a roller (37) located between the roller (35) and the notched zone of the outer rotor.

9. Walking acceleration equipment according to claim 1 characterized in that the plate (20) has a hoop (21) for wedging a shoe.

10. Walking acceleration equipment according to claim 1 characterized in that the plate (20) has a strap (21) for securing a shoe.

11. Walking acceleration equipment according to claim 1 characterized in that said external rotor motor comprises an epicyclic reducer.

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