FR3131854A1 - boxing training device - Google Patents

Abstract

Boxing training device (10) comprising - a support (2) extending along a longitudinal axis (21) between a first end and a second end; - a striking body (1) incorporating a chamber (16) cylindrical receiving the first end; - a base (3) to which the second end is fixed; - a first plurality of elastic return means (17) connecting the support to the inner wall of the chamber so that the striking body can oscillate around the longitudinal axis (21); - an electrical energy generation module from an oscillating movement of the striking body (1) around the longitudinal axis (21), this module integrating - an annular magnet (18) fixed to the interior wall of the chamber; - a coil (19 ) of magnetic induction arranged on the support so that it is inside the ring magnet. Figure for the abstract: Fig.1

Description

Boxing training device

The present invention relates to a boxing training device capable of generating, during its use, electrical energy.

Recovery of human mechanical energy during sports practice is desirable for more than one reason. In addition to its environmental and economic interests, a conversion into electrical energy of mechanical energy produced by the user during sports practice allows energy autonomy of the training device used. The result is a self-powered training device offering freedom of placement, freedom from the constraints and risks associated with electrical connections and, possibly, a source of electrical power for mobile user terminals.

An object of the present invention is to provide a boxing training device capable of generating, during its use, electrical energy.

Another object of the present invention is to improve as much as possible the electrical energy autonomy of a boxing training device integrating electronic modules.

For this purpose, it is proposed, firstly, a boxing training device comprising
- a support extending along a longitudinal axis between a first end and a second end opposite the first end;
- a striking body having a first central axis, this striking body being mounted on the first end of the support;
- a base having a second central axis, the second end of the support being fixed to the base;
- the striking body comprising a cylindrical chamber of substantially circular section extending along the first central axis, this chamber receiving the first end of the support;
- a first plurality of elastic return means connecting the support to the interior wall of the chamber so that the striking body can oscillate around the longitudinal axis of the support;
- a first module for generating electrical energy from an oscillation movement of the striking body around the longitudinal axis of the support, this first module for generating electrical energy integrating
- an annular magnet fixed to the interior wall of the chamber around the first central axis;
- a first magnetic induction coil arranged on the support so that this first magnetic induction coil is at least partially inside the annular magnet, the annular magnet causing, during an oscillation movement of the striking body around the longitudinal axis of the support, a change of the magnetic field in the first magnetic induction coil.

Various additional features can be provided, alone or in combination:
- the boxing training device further comprises a second module for generating electrical energy from an oscillation movement of the striking body around the longitudinal axis of the support, this second generation module of electrical energy integrating
- a second magnetic induction coil disposed in a first transverse through hole of the support;
- a first cylindrical magnet having a first end and a second end opposite the first end, this first cylindrical magnet being connected via its first end and/or its second end to the interior wall of the chamber so that it extends at least partially inside the first through hole, the first cylindrical magnet causing, during an oscillation movement of the striking body around the longitudinal axis of the support, a change in the magnetic field in the second coil magnetic induction ;
- the boxing training device comprises a first elastic connection means connecting the first cylindrical magnet to the interior wall of the chamber;
- the first plurality of elastic return means is configured to maintain, during an oscillating movement of the striking body around the longitudinal axis of the support, the distance between the first magnetic induction coil and the annular magnet greater than a predefined threshold distance;
- the first plurality of elastic return means comprises at least three springs uniformly distributed around the support;
- the striking body comprises a third module for generating electrical energy from a striking energy received by this striking body, said third module for generating electrical energy comprising
- two annular plates concentric with the first central axis;
- at least one piezoelectric part placed between the two annular plates;
- the boxing training device further comprises,
- a second plurality of elastic return means connecting the support to the base so that the support can oscillate around the second central axis;
- a fourth module for generating electrical energy from a mechanical pressure exerted, during an oscillating movement of the support around the second central axis, by an elastic return means of said second plurality on the support and/ or on the base, this fourth electrical energy generation module integrating a first piezoelectric element disposed between the base or the support and a support end of said elastic return means of the second plurality;
- the fourth electrical energy generation module further integrates a second piezoelectric element disposed between the base or the support and said supporting end of said elastic return means of the second plurality so that this end of support is sandwiched between the first piezoelectric element and the second piezoelectric element;
- the second plurality of elastic return means comprises at least three springs uniformly distributed around the support;
- the boxing training device further comprises a fifth module for generating electrical energy from an oscillation movement of the support around the second central axis, this fifth module for generating electrical energy integrating
- a third magnetic induction coil arranged in a second transverse through hole of the support;
- a second cylindrical magnet having a third end and a fourth end opposite the third end;
- at least a first plurality of elastic connection means connecting the third end of the second cylindrical magnet to the support so that this second cylindrical magnet is at least partially inside the second through hole, the second cylindrical magnet causing, when an oscillation movement of the support around the second central axis, a change in the magnetic field in the third magnetic induction coil.

Other characteristics and advantages of the invention will appear more clearly and concretely on reading the following description of embodiments, which is made with reference to the appended drawings in which:

the figure is a schematic representation of a boxing training device according to various embodiments;

the figure is a schematic representation of an electrical energy generation module equipping the boxing training device according to various embodiments.

Referring to the , a boxing training device 10 is displayed. This device 10 is suitable for training in any form of boxing (such as English boxing, integral boxing, or kickboxing), in martial arts (such as Karate, Kung-fu or Taekwondo) or, more generally, to any combat sport based on the practice of punches. The reference below to boxing is therefore only for reasons of simplicity and is in no way limiting.

The boxing training device 10 allows the exercise of repeated striking movements on a striking body 1 mounted on a support 2 (or a support element), which is fixed to a base 3 (or base).

The base 3 can rest on the ground or form a means of connection to a ceiling. The boxing training device 10 can, in fact, be carried by the base 3 placed on the ground or suspended via the base 3 from a ceiling. Fixing plates integrated into the base 3 allow it to be fixed to a ceiling or to improve its hold on the ground. The base 3 is dimensioned so as to be able to hold the support 2 and the striking body 1 stable. The base 3 is, in one embodiment, a substantially circular or cylindrical base/body. When it is intended to be placed on the ground, the base 3 is, in one embodiment, a hollow cylindrical body arranged to receive a counterweight. This counterweight is, for example, sand or, more generally, a mass. In another embodiment, the base 3 comprises at least three support arms extending radially from its center allowing it to be stabilized on the ground or fixed to a ceiling.

The support 2 extends along a longitudinal axis 21 (or a longitudinal direction) between a first end 22 and a second end 23 opposite the first end 22 . The support 2 is a cylindrical or tubular body such as a post, a mast or a bar. The support 2 is, in one embodiment, a hollow tubular body. The support 2 can be made of metal, composite materials, or any other rigid material capable of supporting the striking body 1 . In order to allow height adjustment, the support 2 is, in one embodiment, telescopic.

The striking body 1 is mounted on the first end 22 of the support 2 . The second end 23 of the support 2 is fixed to the base 3 . When the boxing training device 10 is in use, the longitudinal axis 21 of the support 2 is substantially vertical.

In one embodiment, the support 2 is mounted to move in oscillation on the base 3 around a central axis 31 of this base 3 . The central axis 31 of the base 3 is substantially perpendicular to the support plane (i.e. the floor or a ceiling) of the base 3 .

In one embodiment, the support 2 is connected to the base 3 via a ball joint (spherical) or pendulum connection (a pendulum joint, particularly when the drive device 10 is suspended) allowing three degrees of freedom in rotation. Thanks to such a connection, the support 2 can oscillate/tilt around the central axis 31 of the base 3 in a plurality of directions of a spherical sector of a sphere centered on the connection between the base 3 and the support 2 .

A plurality of elastic return means 32 connect the support 2 to the base 3 so that the support 2 can oscillate around the central axis 31 of the base 3 . These elastic return means 32 are intended to return the support 2 to a rest position relative to the base 3 when it moves away from it. These elastic return means 32 are, in one embodiment, springs. When the boxing training device 10 is in use, the longitudinal axis 21 of the support 2 in the rest position is substantially vertical. In other words, when the boxing training device 10 is in use, the elastic return means 32 exert a return force on the support 2 in order to maintain it in a substantially vertical position in the center of the base 3 . The elastic return means 32 provide a centering function for the support 2 in the base 3 along its central axis 31 . In another embodiment, the elastic return means 32 also provide a function of fixing the support 2 to the base 3 .

The elastic return means 32 allow an oscillation or pendulum movement of the support 2 around the central axis 31 of the base 3 . More generally, the support 2 is connected to the base 3 by an elastic connection so that it can oscillate relative to the base 3 around its central axis 31 . When a blow is struck on the striking body 1 , the support 2 is likely to oscillate under the effect of this blow until returning to its substantially vertical rest position.

In one embodiment, the elastic return means 32 are uniformly distributed around the support 2 . For example, the elastic return means 32 are distributed at 120°, 90°, 72° or 60° two by two around the support 2 . In one embodiment, the elastic return means 32 comprise three springs uniformly distributed around the support 2 , i.e. extending between the support 2 and the base 3 so as to form two by two substantially the same angle around the support 2 . For example, the support 2 comprises a post forming the axis of the striking body 1 , this post being held in a substantially vertical position by three springs uniformly arranged around it and connecting it to the base 3 .

The support 2 and/or the base 3 comprise a module for generating electrical energy from the mechanical pressures exerted during an oscillation movement of the support 2 around the central axis 31 of the base 3 , by any of the elastic return means 32 on the support 2 and/or on the base 3 . This electrical energy generation module comprises piezoelectric elements 33 arranged between the base 3 or the support 2 and a support end of any one of the elastic return means 32 . The support end of an elastic return means 32 designates its point or surface of support, contact or anchoring to the support 2 or to the base 3 . The piezoelectric elements 3 3 are intended to be excited by variations in mechanical pressure induced by the elastic return means 32 on the support 2 and/or on the base 3 . This electrical energy generation module produces an electric current by deformation of the piezoelectric elements 33 under the effect of deformations of the elastic return means 32 . This electrical energy generation module converts, by piezoelectric effect, the variations in the pressure force produced by the elastic return means 32 on the support 2 and/or on the base 3 into electrical energy.

To take best advantage of the oscillations of the support 2 , the electrical energy generation module comprises, in one embodiment, piezoelectric elements 33 arranged on either side of the support end of the elastic return means 32 on the base 3 and/or on the support 2 . More generally, at least one additional piezoelectric element 33 is arranged between the base 3 or the support 2 and the support end of the elastic return means 32 so that this support end is sandwiched between two elements 33 piezoelectrics of the electrical energy generation module. In other words, one and/or the other of the supporting ends of the return means 32 is/are sandwiched by piezoelectric elements 33 .

At least one of the supporting ends of each of the elastic return means 32 is held in support on piezoelectric elements 33 on either side (i.e. sandwiched by the piezoelectric elements 33 ). When compressing an elastic return means 32 , first piezoelectric elements are compressed while the second opposite piezoelectric elements are released. On the other hand, during the elongation of this elastic return means 32 , it is the second piezoelectric elements which are compressed while the first opposite piezoelectric elements are released. During an oscillation movement of the support 2 , the elastic return means 32 make it possible to excite the piezoelectric elements 33 both in their compression and in their elongation on the side of the support 2 and/or the base 3 .

The piezoelectric elements 33 are, in one embodiment, in the form of bars, discs or films of piezoelectric ceramics (commonly called PZT ceramic) or any other equivalent piezoelectric material capable of generating electrical charges when subjected to mechanical stress. In one embodiment, two metal plates provide electrical contact (or electrical connection) of the electrodes of the piezoelectric elements 33 . In another embodiment, these metal plates also distribute the support force of the return means 32 on the piezoelectric elements 33 .

To maintain the amplitude of the deformations applied to the piezoelectric elements 33 below a predefined threshold value that they can withstand, stop elements can be considered to prevent excessive deformations of the piezoelectric elements 33 .

The blows made on the striking body 1 shake the support 2 which, in turn, stretches/compresses the elastic return means 32 which excite the piezoelectric elements 33 so as to produce electrical energy. The vibrations/oscillations of the support 2 are reflected in the form of pressure variation on the piezoelectric elements 33 via the elastic return means 32 so as to generate electrical discharges recoverable in an electrical circuit.

The striking body 1 is a punching bag, a punching bag, a ball or, more generally, a punching form having a central axis 11 . The striking body 1 is of substantially cylindrical shape. The striking body 1 has, in one embodiment, the shape of a human bust. The longitudinal axis 21 of the support 2 is substantially aligned with the central axis 11 of the striking body 1 . When the boxing training device 10 is at rest, the support 2 or its longitudinal axis 21 forms the central axis 11 of the striking body 1 .

The striking body 1 comprises an outer sheath 12 (i.e. an envelope, a cover or an outer covering skin). This sheath 12 can be made of any natural or synthetic material (for example, leather, textile, rubber or plastic) capable of providing protection for the user when using the boxing training device 10 . In one embodiment, the outer sheath 12 comprises padding (for example, foam rubber).

The boxing training device 10 integrates a module for generating electrical energy from the striking energy integrated into the striking body 1 . This module converts the strike energy received by the strike body 1 into electrical energy. This electrical energy generation module comprises at least one piezoelectric part 13 arranged between two annular plates 14 concentric with the central axis 11 of the striking body 1 . These annular plates 14 are, in one embodiment, made of a compact material such as metal (for example, steel) or rubber. Advantageously, the annular plates 14 on either side of the piezoelectric parts 13 allow uniform loading of the piezoelectric parts 13 and ensure their protection against crushing or excessive deformation.

In one embodiment, piezoelectric parts 13 connected in series are distributed between the two annular plates 14 . These piezoelectric parts 13 include piezoelectric plates, bars or sheets such as ceramic piezoelectric sheets or bars. The piezoelectric elements 13 generate electrical energy under the action of mechanical stresses/deformations caused by blows made by the user on the striking body 1 .

To improve the resistance of the striking body 1 to blows and limit the amplitude of its oscillations, this striking body 1 comprises, in one embodiment, an annular housing 15 around its central axis 11 . This annular housing 15 is intended to receive a load, such as sand.

Furthermore, the striking body 1 comprises a cylindrical chamber 16 of substantially circular section extending along the central axis 11 of the striking body 1 . In other words, the longitudinal axis of the chamber 16 is substantially the same as the central axis 11 of the striking body 1 . The striking body 1 is therefore hollow in its center. The radius of the chamber 16 is less than the radii of the two annular plates 14 . The chamber 16 receives the first end 22 of the support 2 . The chamber 16 includes an opening making it possible to receive in its interior the first end 22 of the support 2 . The striking body 1 is, in fact, mounted on the support 2 via the chamber 16 .

The striking body 1 is mounted movable in oscillation on the support 2 . The striking body 1 is capable of oscillating around the longitudinal axis 21 of the support 2 . The striking body 1 is, in one embodiment, capable of oscillating (i.e. vibrating or tilting) in a plurality of radial directions perpendicular to the longitudinal axis 21 of the support 2 .

In one embodiment, the striking body 1 is fixed to the support 2 via an elastic connection. For this, a plurality of elastic return means 17 connect the support 2 to the interior wall of the chamber 16 so that the striking body 1 can oscillate around the longitudinal axis 21 of the support 2 . The elastic return means 17 extend radially from the support 2 to fix it to the interior wall of the chamber 16 of the striking body 1 .

The elastic return means 17 comprise, in one embodiment, a plurality of substantially identical springs. In one embodiment, the elastic return means 17 comprise at least three springs uniformly distributed around the support 2 . Elastic return means 17 uniformly distributed around the support 2 are substantially at the same height therefrom. For example, one or more triplets of springs distributed at 120° two by two around the support 2 can be envisaged to connect the support 2 to the interior wall of the chamber 16 so that the striking body 1 can oscillate around the longitudinal axis 21 of the support 2 .

A pendulum connection (for example, by means of a pendulum joint, in particular when the boxing training device 10 is suspended) or a ball joint (spherical) allowing three degrees of freedom in rotation between the support 2 and the body 1 typing can also be considered. For example, the support 2 ends at its first end 22 by a pendulum or ball joint connection with the striking body 1 . With such a connection, the striking body 1 is free to have an oscillating movement around the longitudinal axis 21 of the support 2 using the elastic return means 17 .

The boxing training device 10 comprises a module for generating electrical energy from an oscillation movement (rocking, tilting or vibration) of the striking body 1 around the longitudinal axis 21 of the boxing training device 10. support 2 . This electrical energy generation module produces an electric current from an oscillating movement of the striking body 1 in a substantially radial direction relative to the longitudinal axis 21 of the support 2 .

This electrical energy generation module comprises at least one annular magnet 18 (a permanent magnet in the shape of a ring). This annular magnet 18 is fixed to the interior wall (or face) of the chamber 16 around the central axis 11 of the striking body 1 . The annular magnet 18 includes a north pole (for example, the upper end on the of this annular magnet 18 ) and a south pole (for example, the lower end on the of this annular magnet 18) facing each other (i.e. one opposite the other or opposite one another) in the direction of the central axis 11 of the strike body 1. The annular magnet 18 can be formed from a single piece or from a plurality of magnets arranged in a general annular or circular shape (angularly spaced from each other or not). In one embodiment, the annular magnet 18 is of the Neodymium type.

This last electrical energy generation module further comprises at least one magnetic induction coil 19 arranged on the support 2 so that it is at least partially inside the annular magnet 18 . The magnetic induction coil 19 is mounted on the support 2 so that it is, when the striking body 1 is mounted on the support 2 , at the level of the annular magnet 18 or, in other words, at least partially at inside the annular magnet 18 . In other words, the annular magnet 18 is fixed to the interior wall of the chamber 16 in an annular manner around the magnetic induction coil 19 . The magnetic induction coil 19 is, in one embodiment, wound around the support 2 .

The annular magnet 18 is attached to or integral with the striking body 1 and therefore moves with it. Thus, when the striking body 1 oscillates, the same goes for the annular magnet 18 . As for the magnetic induction coil 19 , it is integral with the support 2 but not attached to the striking body 1 .

During an oscillation, swing or vibration movement of the striking body 1 under the effect of a blow to this striking body 1 , the annular magnet 18 moves relative to the coil 19 of magnetic induction around it (back-and-forth movement in a substantially radial direction perpendicular to the longitudinal axis 21 of the support 2 ) and causes a change in the magnetic field in this magnetic induction coil 19 which generates, in consequently, electrical energy. Indeed, an oscillation or vibration movement of the striking body 1 relative to the support 2 is converted into electrical energy due to the movement of the annular magnet 18 relative to the magnetic induction coil 19 . During an oscillating movement of the striking body 1 relative to the support 2 , a first segment of the annular magnet 18 approaches and moves away alternately from the air gap (the part separating the annular magnet 18 and the magnetic induction coil 19 ) while the second segment of the annular magnet 18 diametrically opposite the first segment alternately moves away and approaches the air gap so as to vary the magnetic flux through the coil 19 d 'magnetic induction.

More generally, the annular magnet 18 causes, during an oscillation movement of the striking body 1 around the longitudinal axis 21 of the support 2 , a change in the magnetic field in the magnetic induction coil 19 . Thus, during an oscillating movement of the striking body 1 around the longitudinal axis 21 of the support 2 , the magnetic induction coil 19 is immersed in a magnetic field which varies over time of the annular magnet 18 and generates, therefore, electrical energy.

The elastic return means 17 connecting the support 2 and the striking body 1 are configured to allow an oscillation movement of the striking body 1 around the longitudinal axis 21 of the support 2 without the annular magnet 18 interfering physically with the magnetic induction coil 19 . The parameters of these elastic return means 17 (number, stiffness, empty length, maximum elongation, and/or compression length of the springs) are chosen so that the radial distance between the magnetic induction coil 19 and the magnet 18 annular (or, equivalently, between the interior wall of the chamber 16 and the support 2 ) is greater than a predefined threshold distance. More generally, the elastic return means 17 are configured to maintain, during an oscillating movement of the striking body 1 around the longitudinal axis 21 of the support 2 , the distance between the magnetic induction coil 19 and the annular magnet 18 greater than a predefined threshold distance.

Alternatively or in combination, the boxing training device 10 further comprises a second module for generating electrical energy from an oscillation movement (or vibration) of the striking body 1 around the longitudinal axis 21 of the support 2 and/or the support 2 around the central axis 31 of the base 3 .

This second electrical energy generation module comprises a second magnetic induction coil 41 arranged in a hole 44 (a drilling, a channel or a passage as illustrated by the ) transverse crossing of the support 2 . The central axis of the second magnetic induction coil 41 is substantially perpendicular to the longitudinal axis 21 of the support 2.

This second electrical energy generation module comprises a cylindrical magnet 42 (of circular, square or rectangular section for example) having a first end and a second end opposite the first end. The cylindrical magnet 42 (of the Neodymium type for example) includes a north pole (for example, the right end of this magnet on the ) and a south pole (for example, the left end of this magnet on the ) arranged facing each other (i.e. one opposite the other or opposite each other) in the axial direction of the through hole 44 .

In one embodiment, the cylindrical magnet 42 is connected via its first end and/or its second end to the interior wall of the chamber 16 so that it extends at least partially inside the through hole 44 . In another embodiment, the cylindrical magnet 42 has one end connected to the interior wall of the chamber 16 , its second end being free or it also being connected to the interior wall of the chamber 16 . As a result, during an oscillating movement of the striking body 1 around the longitudinal axis 21 of the support 2 , the cylindrical magnet 42 causes a change in the magnetic field in the second magnetic induction coil 41 .

In one embodiment, the cylindrical magnet 42 is connected to the interior wall of the chamber 16 via at least one elastic connection means 43 allowing an additional oscillating or radial back-and-forth movement. of the cylindrical magnet 42 around the longitudinal axis 21 of the support 2 . This elastic connection means 43 comprises, in one embodiment, a spring. The dimensions of the through hole 44 , of the elastic connection means 43 and/or of the cylindrical magnet 42 are such that the latter can oscillate (to a sufficient extent to allow efficient use of the electrical energy generation module) without it does not physically interfere with the second magnetic induction coil 41 .

In another embodiment illustrated by the , a plurality of elastic connection means 43 connects at least one of the ends of the cylindrical magnet 42 to the support 2 so that this cylindrical magnet 42 is at least partially inside the through hole 44. These elastic connection means 43 include, for example, springs and/or straps. In one embodiment, each end of the cylindrical magnet 42 is connected to the support 2 by at least three substantially identical springs or straps uniformly distributed around this end. Thanks to these elastic connection means 43, when the support 2 oscillates around the central axis 31 of the base 3, the same goes for the cylindrical magnet 42 relative to the second magnetic induction coil 41 arranged in the through hole 44. As a result, during an oscillating movement of the support 2 around the second central axis 31, the cylindrical magnet 42 causes a change in the magnetic field in the second magnetic induction coil 41.

In one embodiment, elastic connection means 43 connect the first and the second end of the cylindrical magnet 42 to the support 2 .

During an oscillation, swing or vibration movement of the striking body 1 around the longitudinal axis 21 of the support and/or of the support 2 around the central axis 31 of the base 3 , the magnet 42 cylindrical moves relative to the second magnetic induction coil 41 therein and causes a change in the magnetic field in this second magnetic induction coil 41 which consequently generates electrical energy. Indeed, an oscillation or vibration movement of the striking body 1 and/or of the support 2 is converted into electrical energy due to the oscillation movement of the cylindrical magnet 42 in the through hole 44 provided in the support 2 and in which the second magnetic induction coil 41 is arranged. The second magnetic induction coil 41 is immersed in a time-varying magnetic field of the cylindrical magnet 42 and consequently generates electrical energy.

A plurality of through holes 44 having central axes distributed angularly regularly around the axis 21 at different heights of the support 2 can be envisaged in order to best exploit any oscillating movement of the striking body 1 and/or the support 2 .

The elastic return means 17 connecting the support 2 to the interior wall of the chamber 16 allow, under the effect of a blow to the striking body 1 or an oscillation movement of the support 2 around the central axis 31 of the base 3 , an oscillation movement of this striking body 1 around the longitudinal axis 21 of the support 2 and, consequently, also of the annular magnet 18 and/or of the magnet 42 cylindrical, without the latter physically interfering with the corresponding magnetic induction coils 19 , 41 . When the striking body 1 and/or the support 2 are shaken, the elastic return means 17 and the elastic connection means 43 prevent (or at least limit the risk of) a collision between the annular magnet 18 and the magnet 42 cylindrical and the corresponding magnetic induction coils 19 , 41 . The parameters of the elastic return means 17 and the elastic connection means 43 (stiffnesses, maximum/minimum lengths for example) are chosen so as to effectively influence the oscillation frequency of, respectively, the annular magnet 18 and the magnet 42 cylindrical.

In one embodiment, the first and/or the second magnetic induction coil 19 , 41 are, respectively, wound around a core made of ferromagnetic material (such as iron, nickel or cobalt). In one embodiment, this core is at least partially laminated to reduce losses due to eddy currents. In order to improve the magnetic circuit and use less magnetic material, this core comprises, in one embodiment, a central portion extending in an axial direction between a first and a second end and a first and a second portion extending extending radially, respectively, to the first and second ends of the central portion. The first and second radially extending portions comprise annular elements made of a ferromagnetic material. The magnetic induction coil 19 , 41 is wound around the central portion between the first and the second radially extending portion.

The different electrical energy generation modules presented above can be electrically connected to electronic devices and/or to an electrical energy storage unit (such as a storage battery or a cell) embedded in the device. 10 boxing training. Electronic devices embedded in the boxing training device 10 may include sensors (for example, position and/or amplitude of blows delivered by the users on the striking body 1 ), electronic circuits, light indicators arranged on any of the components of the boxing training device 10 (to indicate, for example, a position on the striking body, the power of a blow, or the state of an electronic module ), a screen, communication modules to transmit to a mobile application installed in a user terminal information relating to the training carried out (duration, date, frequency, calories, statistical data).

In one embodiment, the electrical energy generation modules presented above are connected in series and electrically connected to an electrical energy storage unit. The electrical energy produced by any of the electrical energy generation modules presented above can be used immediately by an electronic device equipping the boxing training device 10 or to charge the storage unit of electric energy. The electrical energy storage unit can be placed in the base 3 or in the support 2 . An electrical outlet (for example, a USB port or any other equivalent port) can also be envisaged in the boxing training device 10 for temporary or reserve power supply of a mobile user terminal by the generation modules of electrical energy.

Advantageously, the embodiments described above make it possible to convert the striking energy provided by the user and the kinetic/mechanical energy of the boxing training device 10 into electrical energy. The electrical energy generation modules presented above are adapted to the dynamics of the boxing training device 10 in order to make the best use of any blow to the body 1 strike, regardless of its power.

Advantageously, the embodiments described above make it possible to reduce or avoid the use of an external electrical power supply to the self-powered boxing training device 10 so that it can be used anywhere.

Although the boxing training device 10 is described above in relation to embodiments and variants, those skilled in the art will understand that these embodiments and variants are not limiting and can be combined with each other. and/or with any other equivalent embodiment.

Claims (10)

Boxing training device ( 10 ) comprising
- a support ( 2 ) extending along a longitudinal axis ( 21 ) between a first end ( 22 ) and a second end ( 23 ) opposite the first end ( 22 );
- a striking body ( 1 ) having a first central axis (11 ) , this striking body ( 1 ) being mounted on the first end (22 ) of the support ( 2 );
- a base ( 3 ) having a second central axis (31 ), the second end ( 23 ) of the support ( 2 ) being fixed to the base ( 3 );
this boxing training device ( 10 ) being characterized in that
- the striking body ( 1 ) comprises a cylindrical chamber ( 16 ) of substantially circular section extending along the first central axis ( 11 ), this chamber ( 16 ) receiving the first end ( 22 ) of the support ( 2 );
- a first plurality of elastic return means ( 17 ) connecting the support ( 2 ) to the interior wall of the chamber ( 16 ) so that the striking body ( 1 ) can oscillate around the longitudinal axis ( 21 ) of the support ( 2 );
- a first module for generating electrical energy from an oscillating movement of the striking body ( 1 ) around the longitudinal axis (21 ) of the support (2 ), this first module (14 ) for generating electrical energy integrating
- an annular magnet ( 18 ) fixed to the interior wall of the chamber (16) around the first central axis ( 11 );
- a first magnetic induction coil ( 19 ) arranged on the support ( 2 ) so that this first magnetic induction coil ( 19 ) is at least partially inside the annular magnet ( 18 ), the annular magnet ( 18 ) causing, during an oscillating movement of the striking body ( 1 ) around the longitudinal axis ( 21 ) of the support ( 2 ), a change in the magnetic field in the first coil ( 19 ) d 'magnetic induction. Boxing training device ( 10 ) according to the preceding claim, characterized in that it further comprises a second module for generating electrical energy from an oscillation movement of the body ( 1 ) of strikes around the longitudinal axis ( 21 ) of the support ( 2 ), this second electrical energy generation module integrating
- a second magnetic induction coil ( 41 ) disposed in a first transverse through hole ( 44 ) of the support ( 2 );
- a first cylindrical magnet ( 42 ) having a first end and a second end opposite the first end, this first cylindrical magnet ( 42 ) being connected via its first end and/or its second end to the interior wall of the chamber ( 16 ) so that it extends at least partially inside the first through hole ( 44 ), the first cylindrical magnet ( 42 ) causing, during an oscillating movement of the body ( 1 ) to strike around the longitudinal axis ( 21 ) of the support ( 2 ), a change in the magnetic field in the second magnetic induction coil ( 41 ). Boxing training device ( 10 ) according to the preceding claim, characterized in that it comprises a first elastic connection means ( 43 ) connecting the first cylindrical magnet ( 42 ) to the interior wall of the chamber ( 16 ). Boxing training device ( 10 ) according to any one of the preceding claims, characterized in that the first plurality of elastic return means ( 17 ) is configured to maintain, during an oscillating movement of the body ( 1 ) striking around the longitudinal axis ( 21 ) of the support ( 2 ), the distance between the first magnetic induction coil ( 19 ) and the annular magnet ( 18 ) greater than a predefined threshold distance. Boxing training device ( 10 ) according to any one of the preceding claims, characterized in that the first plurality of elastic return means ( 17 ) comprises at least three springs uniformly distributed around the support ( 2 ). Boxing training device ( 10 ) according to any one of the preceding claims, characterized in that the striking body ( 1 ) comprises a third module for generating electrical energy from a striking energy received by this striking body ( 1 ), said third electrical energy generation module comprising
- two annular plates ( 14 ) concentric with the first central axis ( 11 );
- at least one piezoelectric part ( 13 ) placed between the two annular plates ( 14 ). Boxing training device ( 10 ) according to any one of the preceding claims, characterized in that it further comprises,
- a second plurality of elastic return means ( 32 ) connecting the support ( 2 ) to the base ( 3 ) so that the support ( 2 ) can oscillate around the second central axis ( 31 );
- a fourth module for generating electrical energy from a mechanical pressure exerted, during an oscillation movement of the support ( 2 ) around the second central axis ( 31 ), by an elastic return means ( 32 ) of said second plurality on the support ( 2 ) and/or on the base ( 3 ), this fourth electrical energy generation module integrating a first piezoelectric element ( 33 ) disposed between the base ( 3 ) or the support ( 2 ) and a support end of said elastic return means ( 32 ) of the second plurality. Boxing training device ( 10 ) according to the preceding claim, characterized in that the fourth electrical energy generation module further integrates a second piezoelectric element ( 33 ) disposed between the base ( 3 ) or the support ( 2 ) and said support end of said elastic return means ( 32 ) of the second plurality so that this support end is sandwiched between the first piezoelectric element and the second piezoelectric element. Boxing training device ( 10 ) according to claim 7 or 8, characterized in that the second plurality of elastic return means ( 32 ) comprises at least three springs uniformly distributed around the support ( 2 ). Boxing training device ( 10 ) according to any one of the preceding claims, characterized in that it further comprises a fifth module for generating electrical energy from an oscillation movement of the support ( 2 ) around the second central axis ( 31 ), this fifth electrical energy generation module integrating
- a third magnetic induction coil ( 41 ) disposed in a second transverse hole ( 44 ) of the support ( 2 );
- a second cylindrical magnet ( 42 ) having a third end and a fourth end opposite the third end;
- at least a first plurality of elastic connection means ( 43 ) connecting the third end of the second cylindrical magnet ( 42 ) to the support ( 2 ) so that this second cylindrical magnet ( 42 ) is at least partially inside the second through hole ( 44 ), the second cylindrical magnet ( 42 ) causing, during an oscillation movement of the support ( 2 ) around the second central axis ( 31 ), a change in the magnetic field in the third coil ( 41 ) d 'magnetic induction.