FR3164369A1 - Massage device - Google Patents

Abstract

Massage Device Massage device (3) comprising: - a frame (30), - a treatment chamber (7) within which a skin fold is to be formed, - a first flap (8) assembled to the frame by a pivot joint (34) about a first axis of rotation (X1), - a first drive means (18) configured to rotate the first flap about the first axis (X1), - a first roller assembly (10) comprising a body (11) fixed to the first flap, and a roller (12) assembled to the body by a pivot joint (81) about a second axis of rotation (X3), the roller (12) being arranged in the treatment chamber (7), the first roller assembly further comprising a second drive means (16) configured to rotate the roller about the second axis of rotation. Figure for abbreviation: Figure 12

Description

Massage device Technical field of the invention

The invention relates to a massage device, in particular a massage device configured to perform a rolling massage. More specifically, the invention relates to a transmission mechanism arranged between a drive means and a movable flap of the massage device.

Prior art

For performing rolling massages, massage devices are available that include one or more movable flaps within a treatment chamber. The flap(s) have a free end that can be moved within the treatment chamber in a linear or rotational motion. The free end of each flap is generally equipped with a roller that rotates around its axis of revolution. These rollers are designed to massage a skin fold formed within the treatment chamber. Additionally, the treatment chamber is typically pneumatically connected to a suction system to facilitate the formation of the skin fold within the chamber.

The flap(s) are generally moved within the treatment chamber by means of an electric motor integrated into the massage device. A transmission mechanism is then arranged between an output shaft of the electric motor and the flap(s), to drive them along a desired trajectory. Documents US6517499B1 and WO2022111991A1 disclose such massage devices.

However, massage devices currently available have some drawbacks:
- Firstly, they are often heavy and bulky, which makes them difficult to handle.
- Secondly, they are generally not powerful enough to mobilize skin tissue. Indeed, the formation of a skin fold requires, at least in some situations, a significant force that some massage devices fail to provide.
- Thirdly, massage devices known to the state of the art heat up considerably when used at full power. This heating can lead to unpleasant sensations for the person operating the massage device and/or for the person receiving the massage, or even make it impossible to use the massage device.
Fourth, existing massage devices are too flimsy and eventually break down. In particular, the transmission mechanism between the motor and the flaps is generally fragile and prone to wear out quickly.
- Fifth, well-known massage devices tend to get dirty quickly and are complex to clean.

Presentation of the invention

The object of the invention is to provide a massage device that remedies the above disadvantages and improves upon known massage devices of the prior art.

More specifically, a first object of the invention is a durable massage device, powerful enough to mobilize skin tissue, and having a reduced weight and volume.

The invention relates to a massage device comprising:
- a chassis,
- a treatment chamber inside which a skin fold is intended to be formed,
- a first panel assembled to the chassis by a pivoting connection around a first axis of rotation,
- a first training method configured to animate the first part of a rotational movement around the first axis,
- a first roller assembly comprising a body fixed to the first flap, and a roller assembled to the body by a pivoting linkage means around a second axis of rotation, the roller being arranged in the treatment chamber, the roller being intended to massage the skin fold, the first roller assembly further comprising a second drive means configured to drive the roller in rotation around the second axis of rotation.

The first flap and the first roller assembly may include conjugate electrical connection means, configured to supply the second drive means with electrical energy.

The first axis of rotation can be parallel to the second axis of rotation.

The second drive means may include an electric motor, the electric motor being arranged inside the roller of the first roller assembly.

The electric motor may comprise a first face and a second face opposite the first face, the first roller assembly further comprising:
- electrical conductors to power the electric motor connected to the first face of the electric motor,
- fastening means, including a fastening screw, the fastening means cooperating with the first face of the electric motor and with the body of the roller assembly, and
- a rotating shaft intended to be driven by the electric motor, the rotating shaft being fixed to the roller, the rotating shaft protruding from the second face of the electric motor, and
- at least one bearing configured to guide the rotation of the roller relative to the body.

The massage device may include means for driving an electric current to supply the first drive means, the driving means being configured so that the rotational speed of an output shaft of the drive means is stable regardless of the resistance exerted by a skin fold on the first flap.

The massage device may also include:
- a second panel assembled to the chassis by a pivoting connection around a third axis of rotation,
- an adjustment mechanism configured to adjust the orientation of the second flap around the third axis of rotation, and
- a second roller assembly comprising a second body fixed to the second flap, and a second roller assembled to the second body by a pivoting linkage means around a fourth axis of rotation, the second roller being arranged in the treatment chamber, the second roller being intended to massage the skin fold, the second roller assembly further comprising a second drive means configured to drive the second roller in rotation around the fourth axis of rotation.

The massage device may include a first sensor configured to estimate a skinfold height in the treatment chamber, and control means configured to control the first drive means and/or the second drive means according to the skinfold height estimated by the first sensor.

The massage device may include a second sensor configured to estimate a displacement of the massage device on the skin surface, and control means configured to control the first drive means and/or the second drive means based on the displacement estimated by the second sensor.

The massage device may include a third sensor configured to estimate a body position of the second roller assembly relative to the chassis, and control means configured to control the first drive means and/or the second drive means according to the body position estimated by the third sensor.

Presentation of the figures

These objects, features and advantages of the present invention will be described in detail in the following description of a particular embodiment, given by way of non-limiting example, with reference to the accompanying figures, among which:

There FIG. 1 is a schematic view of a massage device comprising a massage apparatus according to an embodiment of the invention.

There FIG. 2 is a top perspective view of the massage device.

There FIG. 3 is a perspective view from underneath the massage device.

There FIG. 4 is a perspective view of the massage device without its casing.

There FIG. 5 is a perspective view of a massage device chassis.

There FIG. 6 is a perspective view of an upper part of the chassis.

There FIG. 7 is a perspective view of a lower part of the chassis.

There FIG. 8 is a perspective view of some components of the massage device including a control interface, printed circuit boards, a drive means, a transmission mechanism, a first flap and a second flap.

There FIG. 9 is a perspective view of the control interface and printed circuit boards of the massage device.

There FIG. 10 is a perspective view of the means of training the massage device.

There FIG. 11 is a cross-sectional view along a horizontal plane at mid-height of the massage device.

There FIG. 12 is a perspective and cross-sectional view along a vertical plane of the massage device.

There FIG. 13 is a first schematic view of the drive means and transmission mechanism of the massage device, with an output shaft of the drive means being in a first orientation.

There FIG. 14 is a second schematic view of the drive means and transmission mechanism of the massage device, an output shaft of the drive means being in a second orientation, rotated 180° relative to the first orientation.

There FIG. 15 is a perspective of a connecting arm of the transmission mechanism.

There FIG. 16 is a perspective view of the first part of the massage device.

There FIG. 17 is a perspective view of the massage transmission mechanism.
There FIG. 18 is a perspective view of the first panel and a first roller assembly fixed to the first panel by means of a pivot joint.

There FIG. 19 is a view in pairs along a vertical plane of the first flap and the first roller assembly.

There FIG. 20 is a top perspective view of the first panel and the first roll assembly.

There FIG. 21 is a cross-sectional view of the first roller assembly.

Detailed description

There FIG. 1 Figure 1 schematically illustrates a massage device according to an embodiment of the invention. The massage device 1 comprises a station 2 and a massage unit 3 connected to the station by a pneumatic and electrical connection means 4. The connection means 4 is flexible, so that a user can manipulate the massage unit 3 while moving around a person lying on a massage table, without the station 2 being moved.

Massage device 3 is designed to be applied to the skin's surface to perform a rolling massage. Rolling massage is a technique used to mobilize skin tissue. It involves pinching and rolling a fold of skin, then rolling it along the surface. Rolling massage is a technique used in aesthetic treatments, particularly for cellulite reduction.

Station 2 includes a suction means 5 and a power supply means 6. The suction means 5 is configured to generate a vacuum in a treatment chamber 7 of the massage device 3 to form a skin fold in that treatment chamber. The suction means 5 can be configured to generate a relative vacuum in the treatment chamber of at least 300 mbar, i.e., the pressure in the treatment chamber can be equal to atmospheric pressure less 300 mbar. Advantageously, the suction means 5 can be controlled to produce a given relative vacuum in the treatment chamber. The massage device 1 may advantageously include means for regulating the pressure in the treatment chamber. In particular, the regulating means can be adapted to provide a substantially constant vacuum in the treatment chamber regardless of the level of air leakage at the interface between the massage device 3 and the skin surface. The control systems can also be adapted to provide negative pressure in the treatment chamber, the value of which depends on a pre-calculated setpoint. This setpoint could be, for example, a time-varying pressure profile and/or a setpoint calculated based on pre-determined massage parameters.

The power supply 6 can be configured to provide electrical power to the massage device 3. The power supply 6 may, for example, include an electrical transformer. Station 2 can be connected to an electrical distribution network.

Station 2 may be a trolley, for example, a trolley mounted on casters. Station 2 may include a suitable support for the massage device 3. The massage device 1 may optionally include secondary massage devices connected to station 2.

Massage device 3 is designed to be applied to a person's skin. Initially, this skin surface can be considered a plane P, defined by perpendicular X and Y axes. The Z axis is defined as an axis perpendicular to plane P. The X, Y, and Z axes form an orthogonal coordinate system. We assume that plane P is horizontal and that the massage device is positioned above plane P. Thus, the terms "lower" and "upper" refer to an arrangement along the Z axis, which is a vertical axis. In practice, the massage device can be manipulated to massage a skin surface in any orientation.

The massage device 3 includes:
- a treatment chamber 7
- a first 8-part unit that moves according to a flapping motion,
- a second panel 9 whose orientation is adjustable,

- a first roller assembly 10 comprising a body 11 fixed to the first flap 8 and a roller 12 assembled to the body 11 by a pivot connection means,

- a second roller assembly 13 comprising a body 14 fixed to the second flap 9 and a roller 15 assembled to the body 14 by a pivoting connection means,

- a drive means 16 configured to drive the roller 12 in rotation,
- a drive means 17 configured to drive the roller 15 in rotation,
- a third drive means 18 configured to move the first flap 8 according to a flapping motion, and
- an adjustment means 19 configured to adjust an orientation of the second flap 9.

Note that enumerative terms such as "first,""second,""third," or "fourth" are used solely to distinguish different components of the massage device. The use of these terms does not, in itself, imply any technical characteristics to the components to which they refer.

The first flap 8 is movable within the treatment chamber 7 in a pulsating motion controlled by the drive means 18. The position of the second flap 9 within the treatment chamber 7 is manually adjustable. Once the position of the second flap is set, it is no longer intended to be moved within the treatment chamber during the application of a massage. According to the embodiment presented, the position of the second flap 9 is therefore not controlled by the drive means 18. Alternatively, the invention could nevertheless be adapted to a massage device in which the position of the two flaps is controlled by one or more drive means.

The movement of the flaps 8 and 9 within the treatment chamber, whether motorized or manual, is achieved by rotating each of the two flaps 8 and 9 around their respective axes X1 and X2. The axes X1 and X2 of rotation of the two flaps 8 and 9 are parallel to each other and parallel to the X-axis. The free ends of the flaps 8 and 9 are thus designed to move closer to and further from each other cyclically, as illustrated by arrows F1 on the diagram. FIG. 1 . The movement of the first flap 8 and/or the second flap 9 in the treatment chamber 7 leads to a change in the volume of the treatment chamber.

Rollers 12 and 15 are massage elements designed to massage a skin surface, and in particular a skin fold formed in the treatment chamber 7. Each comprises a cylindrical surface, for example smooth or textured, extending around an axis of revolution respectively referenced X3 and X4. The cylindrical surfaces are intended to come into contact with the skin. The axes of revolution X3 and X4 are parallel to each other and parallel to the X-axis. Rollers 12 and 15 are free to rotate around the axes X3 and X4 respectively. Roller 12 is therefore assembled to the body 11 by a pivot joint about the X3 axis. Similarly, roller 15 is assembled to the body 14 by a pivot joint about the X4 axis.

Figures 2 and 3 illustrate one embodiment of the massage device 3. The massage device comprises an outer casing, i.e., an external contour, which is generally shaped like a horizontal H or a dumbbell. The outer casing includes an upper part 21, a lower part 22, and an intermediate part 23 connecting the upper part 21 to the lower part 22. The intermediate part is narrower than both the upper part 21 and the lower part 23. "Narrower" means that the horizontal midsection of the intermediate part 23 has a smaller surface area than the horizontal midsection of the upper part 21, and smaller than the horizontal midsection of the lower part 22. "Horizontal section" means a cross-section of the massage device perpendicular to the Z-axis. "Midsection" means a cross-section located at mid-height along the Z-axis of the part in question.

The intermediate part 23 forms a handle for moving the massage device over a skin surface. The intermediate part 23 has a generally cylindrical shape whose axis of revolution Z1 is parallel to the Z-axis. Advantageously, the intermediate part 3 has a height along the Z-axis of at least 3 cm and/or a diameter between 3 cm and 8 cm inclusive. In particular, the massage device 3 can be grasped with one hand encircling the intermediate part 23. Advantageously, this handle is positioned around or near the center of gravity of the massage device, which allows the massage device to be manipulated with less effort. Alternatively, the massage device 3 can also be grasped with one hand at its upper part 21, specifically with the palm of the hand covering one upper face of the massage device and the fingers gripping the sides of the upper part 21.

The upper portion 21 contains at least part of the drive means 18, a control interface 24 for the massage device, and a pneumatic and electrical connection means 25 for pneumatically and electrically connecting the massage device 3 to the station 2 via the connection means 4. The upper portion 21 is roughly ellipsoidal in shape, centered on the axis Z1. Advantageously, a lower periphery of the ellipsoidal shape has a concave surface 20, thus allowing for a better grip on the massage device. Advantageously, the upper portion 21 has an upper diameter of between 8 and 15 cm inclusive, preferably between 10 cm and 13 cm inclusive. The difference in diameter between the upper portion 21 and the intermediate portion 23 may be greater than or equal to 4 cm.

The lower part 22 contains the treatment chamber 7, the flaps 8, 9, and the roller assemblies 10, 13. The treatment chamber 7 is delimited on one side by two lateral walls 26, 27 extending parallel to the Y and Z axes, and on the other side by the flaps 8, 9, which, although movable, extend at least roughly parallel to the X and Z axes. The treatment chamber 7 includes an opening intended to be placed against the person's skin. The treatment chamber 7 is pneumatically connected to the suction device 5. When the opening is placed against the skin, the treatment chamber 7 is hermetically or substantially hermetically sealed; that is, it is possible to create a vacuum in the treatment chamber, which promotes the formation of a skin fold.

The massage device 3 includes an outer casing or housing 29 covering and protecting a set of components of the massage device. The housing 29 has a generally smooth, visible surface. The housing 29 may be formed by assembling several elements, preferably made of plastic. The housing 29 may, in particular, support trim pieces that contribute to the aesthetic appearance of the massage device 3. The housing 29 preferably has rounded shapes to be pleasant to the touch.

There FIG. 4 The illustration shows the massage device without its housing 29 so as to reveal the components it contains. The massage device 3 includes, in particular, a frame 30 comprising a set of structural elements rigidly fixed to one another. The structural elements forming the frame 30 may be made of plastic. The various structural elements may be assembled to one another by means of fastening clips and/or by screws. The frame 30 forms a rigid structure to which various components of the massage device are attached. The frame extends into each of the three parts 21, 22, and 23 of the massage device. The frame 30 is illustrated separately on the FIG. 5 .

There FIG. 6 This illustrates an upper portion of the chassis 30. The upper portion of the chassis 30 includes, in particular, a plate 31 equipped with bearings 32 and 33. The bearings 32 and 33 respectively support the rotation of the two flaps 8 and 9. The first flap 8 is thus assembled to the chassis 30 by a first pivot joint 34 around the axis X1. Similarly, the second flap 9 is assembled to the chassis 30 by a second pivot joint 35 around the axis X2.

There FIG. 7 Figure 30 illustrates the lower part of the frame. This lower part is roughly U-shaped. It comprises the two side walls 26 and 27 mentioned previously. These two side walls 26 and 27 are parallel to each other and to the Y and Z axes. The shutters 8 and 9 and the roller assemblies 10 and 13 extend along the X axis between the two side walls 26 and 27. The two side walls 26 and 27 are connected to each other by a bottom wall 28, parallel to the X and Y axes. The bottom wall 28 has two openings 36 and 37 through which each of the two shutters 8 and 9 passes.

There FIG. 8 The diagram shows some of the components of the massage device without the frame 30 that supports them. These components include the control interface 24, which comprises a display screen 38 and a set of buttons 39. The display screen 38 is circular, with its center passing through or near the Z1 axis. Alternatively, the display screen 38 could have a different shape, such as a square or rectangle. The display screen 38 extends parallel to the X and Y axes and can be substantially centered on one of the upper faces of the massage device. The set of buttons 39 includes four buttons arranged around the display screen 38. Alternatively, the number of buttons could be different.

The massage device 3 also includes a first printed circuit board 41 and a second printed circuit board 42. The two printed circuit boards 41 and 42 extend parallel to each other, parallel to the X and Y axes, and one above the other. The second printed circuit board 42 is interposed between the control interface 24 and the first printed circuit board 41. The printed circuit boards 41 and 42 have at least a roughly circular outline. The diameter of the circular outline of the first printed circuit board 41 is substantially equal to the diameter of the circular outline of the second printed circuit board 42.

With reference to the FIG. 9 It can be seen that the first printed circuit board 41 is electrically connected to the second printed circuit board 42. To this end, the first printed circuit board 41 includes a first electrical connector 43, and the second printed circuit board 42 includes a second electrical connector 44 connected directly to the first electrical connector 43. The first electrical connector protrudes upwards from the first printed circuit board 41, and the second electrical connector 44 protrudes downwards from the second printed circuit board 42. The interaction of the two electrical connectors can also contribute to holding the two printed circuit boards in position. The first printed circuit board 41 is also mechanically fixed to the second printed circuit board 42 by means of spacers 45.

The display screen 38, the button assembly 39, and the printed circuit boards 41 and 42 are arranged in the upper part 21 of the massage device 3. The second printed circuit board 42 extends between the display screen 38 and the first printed circuit board 41. The control interface 24, and in particular the display screen 38 and the button assembly 39, are electrically connected to the second printed circuit board 42. The display screen 38 and the button assembly 39 are held in place by a plate 40 of the chassis 30 (visible in the FIG. 5 ) which extends parallel to the two printed circuit boards 41, 42, above the second printed circuit board 42. The printed circuit boards 41, 42 are electrically connected to the power supply 6 via the connection means 4.

There FIG. 8 also shows the third training method 18 and this is also illustrated separately on the FIG. 10 The drive means 18 comprises a geared motor assembly which extends both in the upper part 21 and in the intermediate part 23.

More specifically, the drive means 18 comprises an electric motor 46 and a speed reducer 47 coupled to the electric motor 46. The electric motor 46 comprises a rotor, mechanically fixed to a rotating shaft. The speed reducer 47 comprises an input shaft mechanically fixed to the rotating shaft of the electric motor 46 and an output shaft 48 connected by a reduction mechanism to the input shaft. The speed reducer 47 is thus configured to rotate its output shaft 48 according to a reduction factor defined by the reduction mechanism. The reduction factor can, for example, be between 40 and 120, in particular between 60 and 90. The reduction mechanism of the speed reducer 47 can comprise one or more epicyclic gear trains arranged in series. The output shaft 48 of the speed reducer 47 is designed to rotate relative to the frame 30 about an axis of rotation coinciding with the axis Z1.

The electric motor 46 can be a brushless motor, particularly of the external rotor type. Such an electric motor offers high torque for its compact size. The electric motor 46 is attached to the speed reducer 47. The motor-gearbox assembly thus forms a single unit.

The electric motor 46 comprises a revolution shape, in particular a cylindrical shape, whose axis of revolution coincides with the Z1 axis. Similarly, the speed reducer 47 comprises a revolution shape, in particular a cylindrical shape, whose axis of revolution coincides with the Z1 axis. A lower base of the cylindrical shape of the electric motor 46 is in contact with, or extends a short distance (for example, less than five millimeters) from, an upper base of the cylindrical shape of the speed reducer 47. The diameter of the speed reducer 47 is smaller than the diameter of the electric motor 46. Conversely, the height (along the Z axis) of the speed reducer 47 is greater than the height of the electric motor 46. The electric motor 46 is arranged in the upper part 21 and the speed reducer 47 extends mainly into the middle part 23 of the massage device. The upper base of the cylindrical speed reducer 47 can optionally be located in the upper part 21. Advantageously, at least the lower half of the cylindrical speed reducer 47 is positioned in the intermediate part 23. The intermediate part 23, which forms a handle for the massage device, is thus usefully employed to house an essential component of the massage device. This improves the compactness of the massage device 3. Furthermore, a speed reducer is typically a relatively heavy component since it contains gears, preferably metallic ones. Positioning it in the center of the massage device thus shifts the center of gravity of the massage device towards the intermediate part 23, which facilitates handling the massage device.

The electric motor 46 is powered by electricity and controlled via one of two printed circuit boards 41 or 42, in this case the first printed circuit board 41. Advantageously, the second printed circuit board 42 has a central opening 49 through which the electric motor 46 extends. This reduces the overall size along the Z-axis of the massage device and improves its maneuverability. The central opening 49 has a circular outline with a larger diameter than the cylindrical shape of the electric motor 46. Thus, the electric motor 46 is not in contact with the first printed circuit board 41, allowing its rotor to rotate freely. The second printed circuit board 42 is positioned above the electric motor 46, at a distance from it. The second printed circuit board 42 does not have a central opening and can therefore accommodate more electronic components.

The massage device 3 further includes a suction duct 50 pneumatically connecting the connection means 25 to the treatment chamber 7 to create a negative pressure in the treatment chamber. The suction duct 50 is delimited and closed by walls that isolate the interior of the suction duct from the other components of the massage device. Thus, the air drawn from the treatment chamber 7, which may be contaminated by organic particles or dust, does not come into contact with the various components of the massage device. The air drawn into the treatment chamber 7 is guided via the suction duct 50, then via the connection means 4, to the station 2 where it can be filtered by means of a suitable filtration device.

The suction duct 50 includes, in particular, a first portion 51 extending into the intermediate part 23, around the periphery of the speed reducer 47. The FIG. 11 presents a cross-sectional view of the massage device 3 along a plane parallel to the X and Y axes and passing approximately halfway up the intermediate part 23. FIG. 11 This allows observation of a section of the first portion 51 of the suction duct 50. This section of the suction duct is at least roughly C-shaped and surrounds the speed reducer 47 for at least half a turn (i.e., at least 180°), or even for at least three-quarters of a turn (i.e., at least 270°). This shape of the suction duct 50 optimizes the available space in the intermediate portion 23, and thus allows the diameter of the intermediate portion 23 to be kept relatively small. This allows the intermediate portion 23 to serve as a handle for manipulating the massage device 3, even for people with small hands. Furthermore, the arrangement of the first portion 51 around the periphery of the speed reducer 47 advantageously cools the latter. Indeed, the speed reducer 47 is likely to heat up considerably during the operation of the electric motor 46. The first section 51 of the suction duct 50 thus allows for the efficient dissipation of the heat generated by the speed reducer 47, and helps to keep the handle of the massage device relatively cool. A temperature drop of approximately 10°C in the handle can therefore be observed when the suction means 5 is activated. The first section 51 of the suction duct 50 opens onto the bottom wall 28. The bottom wall 28 is advantageously provided with at least one opening 52 (visible in Figures 7 and 11), in particular two arc-shaped openings 52, positioned opposite the first section 51 of the suction duct 50.

There FIG. 12 presents a cross-sectional view of the massage device 3 along a plane parallel to the Y and Z axes. In relation to the FIG. 12 It can be observed that the suction duct 50 also includes a second portion 53 connecting the pneumatic connection means 25 to the first portion 51. This second portion 53 extends obliquely with respect to the axis Z1 to join the connection means 25. The connection means 25 can thus be positioned at the edge of the upper surface of the massage device. Such positioning of the connection means 25 frees up significant space for integrating the control interface 24 on the upper surface of the massage device, in particular the display screen 38. This positioning also allows the massage device to be operated with the palm of the hand on the upper surface of the upper part 21.

Printed circuit boards 41 and 42 advantageously each include a concave contour 54 and 55 for the passage of the second portion 53 of the suction duct 50. The plate 40 supporting the display screen 38 and the button assembly 39 also includes a concave contour 57 for the passage of the second portion 53 of the suction duct 50.

The connection means 25 is configured to electrically and pneumatically connect the massage device to the station 2. It includes, in particular, a bayonet fitting for quickly and reversibly attaching the connection means 4 to the massage device 3. The connection means 25 also includes suitable sealing means for forming a watertight connection with the connection means 4. The connection means 25 also includes electrical connection means configured to electrically connect the massage device to the station 2. In particular, the massage device is powered electrically via the station 2, and the control interface 24 is configured to control the suction means 5 integrated into the station 2.

The mechanical connection between the speed reducer 47 and the first flap 8 is now described. Advantageously, the massage device 3 includes a transmission mechanism 60 arranged between the drive means 18 and the first flap 8. The transmission mechanism 60 is configured to drive the first flap 8 with an oscillating rotational movement about the axis X1 when the output shaft 48 rotates uniformly about the axis Z1. The amplitude of the oscillating rotational movement of the first flap is therefore defined by the mechanical composition of the transmission mechanism 60. This amplitude is thus perfectly reproducible. This is an advantage compared to massage devices that produce an oscillating movement obtained by varying the direction of rotation of an electric motor. Indeed, in such systems, the angular position of the electric motor's rotor must be controlled with great precision to obtain a constant amplitude of the flap's oscillating movement. Such systems therefore require the use of a position-controlled electric motor, which is more complex to manufacture and control.

The transmission mechanism 60 is schematically illustrated in Figures 13 and 14. The transmission mechanism 60 comprises a connecting arm 61, a first spherical connecting means 62, and a second spherical connecting means 63. The connecting arm 61 has a first end 68 and a second end 69 opposite the first end 68. The first spherical connecting means 62 connects the first end 68 of the connecting arm 61 to the output shaft 48. The second spherical connecting means 63 connects the second end 69 of the connecting arm 61 to the first flap 8. A center C1 of the first spherical connecting means 62 is eccentric with respect to the axis Z1. A center C2 of the second spherical connecting means 63 is eccentric with respect to the axis X1.

When the output shaft 48 pivots around the axis Z1, the center C1 of the first spherical connecting means 62 rotates on a circle centered on the axis Z1, the circle extending in a plane perpendicular to the axis Z1. The displacement of the center C1 induces a displacement of the first end 68 of the connecting arm 61. Since the connecting arm 61 is rigid, the second end 69 of the connecting arm also moves, so as to maintain a constant distance between the centers C1 and C2. Furthermore, since the first flap 8 is also rigid and connected to the frame 30 by the pivot connecting means 34, the center C2 necessarily moves on a circle centered on the axis X1, the circle extending in a plane perpendicular to the axis X1. The displacement of the second end C2 relative to the X1 axis thus causes an oscillatory movement of the first flap 8. Figures 13 and 14 illustrate two positions of the transmission mechanism 60 between which the output shaft 48 has rotated 180° around the Z1 axis. In the two positions shown in Figures 13 and 14, the connecting arm 61 can extend along an axis substantially perpendicular to the Z1 axis and the X1 axis. Between these two positions, the connecting arm 61 can adopt orientations forming an angle other than 90° with the Z1 axis and with the X1 axis. When the output shaft 48 pivots around the Z1 axis, the connecting arm 61 follows an oscillating motion in three dimensions. Sufficient free space around the connecting shaft can be provided. When the output shaft 48 completes a full rotation, the first flap completes a full oscillation, that is to say a complete back and forth movement.

Such a transmission mechanism 60 has the advantage of transmitting a significant force relative to its size. The use of this transmission mechanism therefore allows for a relatively compact massage device 3. Furthermore, this mechanism is particularly durable because the use of spherical connecting means distributes contact pressures over large surfaces. This reduces wear on the various components. Finally, this mechanism is also particularly quiet, allowing for soothing and pleasant massages.

The first spherical connecting means 62, or ball joint connecting means, comprises a sphere or a portion of a sphere and a complementary spherical surface encompassing said sphere and in sliding contact with said sphere. According to the embodiment presented, and as can be clearly seen in the FIG. 10 The output shaft 48 comprises a first spherical portion 64 whose center C1 is offset from the axis Z1. The first spherical portion 64 may include a groove 65. The first spherical portion 64 comprises a first spherical band positioned above the groove 65, and a second spherical band positioned below the groove 65. The output shaft 48 may be supported by a roller bearing 66. The first spherical portion 64 may be made of polished steel.

There FIG. 15 The diagram illustrates the connecting arm 61 in isolation. The first end 68 of the connecting arm 61 comprises a first spherical surface 67, notably concave, surrounding the first sphere portion 64 and in sliding contact with the sphere portion 64. The connecting arm 61 includes a U-shaped flange 70, or in other words, a horseshoe-shaped flange 70. The flange 70 of the connecting arm 61 thus comprises two parallel branches 70A, 70B, connected to each other at a base 70C. The first spherical surface 67 is formed on a surface of the base 70C, that is, at the base of the U-shape. Advantageously, the first spherical surface 67 extends at least 300° around the first sphere portion 64.

The flange 70 is advantageously made of a self-lubricating plastic. Thus, the contact between the first sphere portion 64 and the first spherical surface 67 can be a polished steel/self-lubricating plastic contact. Preferably, the flange 70 is made of a plastic whose dynamic coefficient of friction, measured according to ISO 7148-2 (18), is less than or equal to 0.25. The flange 70 can be manufactured by machining a block of plastic material.

The second end 69 of the connecting arm 61 comprises a second sphere 71 whose center is offset with respect to the axis X1. The second sphere 71 may, in particular, be a ball with a hole drilled through it and supported by a rod 72, in particular a screw, connecting the two arms 70A, 70B. The rod 72 may, in particular, pass through holes provided in each of the two arms 70A, 70B, and be locked in position by means of a nut 73. The second sphere 71 is advantageously also made of a self-lubricating plastic.

There FIG. 16 The first flap 8 is illustrated in isolation. The first flap 8 is a part connecting the transmission mechanism 60 to the first roller assembly 10. The first flap 8 comprises a second spherical surface 74 surrounding the second sphere portion 71 and in sliding contact with the second sphere portion. The second spherical surface 74 is arranged at a first end 75 of the first flap 8. The first roller assembly 10 is fixed to a second end 76 of the first flap 8. The two ends 75 and 76 are positioned on either side of the axis X1. Between its two ends 75 and 76, the first flap 8 extends along an axis A1 substantially perpendicular to the axis X1. The axis A1 can be parallel to the Z-axis for a given position of the first flap 8.

The first flap 8 can be a single-piece element, for example made of plastic, preferably molded. The first flap 8 can, for example, be made of polyoxymethylene (POM). Thus, the contact between the second sphere portion 71 and the second spherical surface 74 can be a self-lubricating polyoxymethylene/plastic contact.

The first flap 8 comprises a housing 77, notably in the form of a cylinder of revolution, extending along the axis X1. The first pivot connection means 34 is formed by at least one pivot axis 78, supported by the bearings 32 of the plate 31, and passing through the housing 77. The first flap 8 is thus guided in rotation relative to the frame 30 around the axis X1. Advantageously, two roller bearings 79 are provided at the interface between the two bearings 32 and the at least one pivot axis 78. The at least one pivot axis 78 may optionally be formed by two separate axes, each arranged on one side of the housing 77 and cooperating with the bearings 32.

The second pivot connecting means 35 is formed similarly to the first pivot connecting means 34. Thus, the second flap 9 also comprises a housing, in particular in the form of a cylinder of revolution, extending along the axis X2. The second pivot connecting means 35 is formed by at least one pivot axis, supported by the bearings 33 of the plate 31, and passing through the housing of the second flap 9. Rolling bearings may also be provided at the interface between the two bearings 33 and at least one pivot axis of the second flap 9. As explained previously, the second flap 9 is not driven in rotation about the axis X2 by the drive means 18. However, according to an alternative embodiment of the invention, the second flap could be configured so as to also be driven by the drive means 18 with a transmission mechanism similar to the transmission mechanism 60.

There FIG. 17 This allows, in particular, visualization of the transmission mechanism 60 as just described. The dimensions of the transmission mechanism can be adapted to obtain reasonable contact pressures in the spherical connecting means 62, 63, and to obtain the desired amplitude for the oscillating flapping movement of the first flap 8. In particular, those skilled in the art can adapt the contact radii of the spherical connecting means 62, 63, and/or the distance between the axis Z1 and the center C1 of the first spherical connecting means, and/or the distance between the axis X1 and the center C2 of the second spherical connecting means, and/or the distance between the two centers C1 and C2. For example, the skin fold is likely to exert a tangential force of around 55N on the roller 12. Considering the different lever arms of the transmission mechanism 60, this tangential force can cause a radial force of around 125N on the output shaft 48 of the geared motor.

Preferably, the drive means 18 is speed-controlled, meaning that the power supply current to the electric motor 46 is controlled to maintain a rotational speed of the output shaft 48 equal to a given setpoint, regardless of the resistance exerted by the skin fold on the first flap 8. It is therefore understood that the massage device includes means for controlling the power supply current to the first drive means 18. These control means are configured so that the rotational speed of the output shaft 48 remains stable regardless of the resistance exerted by the skin fold. Thus, the massage device 3 produces a smooth and reproducible massage even when the skin fold offers significant mechanical resistance to the movement of the first flap 8.

The rotational speed of the output shaft 48 can be monitored by means of a sensor integrated into the electric motor 46. This rotational speed is then maintained constant according to an operator's setting, which can be expressed as a beat frequency. The drive system may also include means for monitoring the electric current consumed by the electric motor 46. The electric current is a function of the torque produced by the electric motor 46. The electric current can be compared to a critical value, and if this current exceeds this critical value, the electric motor can be automatically shut down. This provides dual protection for both the person being massaged and the equipment.

The first roller assembly 10 and the fixing of the first roller assembly 10 to the first flap 8 are now described with reference to figures 18, 19 and 20. The first roller assembly 10 is fixed in a removable manner, that is to say in a detachable manner, to the first flap 8. This allows the first roller assembly 10 to be disassembled in order to carry out a maintenance operation, for example cleaning, repair or replacement of the first roller assembly.

In particular, the first roller assembly is removably fixed to the first flap by means of its body 11. The body 11 therefore includes both a removable fixing means 80 suitable for cooperating with the first flap 8, and a pivot linking means 81 suitable for supporting the first roller 12 in pivot linking around the axis X3.

The second roller assembly 13 is also removably attached to the second flap 9 by means of its body 14. Similarly, the body 14 comprises both a removable fastening means adapted to cooperate with the second flap 9 and a pivoting means adapted to support the second roller 15 by pivoting around the axis X4. The second roller assembly 13, and in particular the removable fastening means between the second roller assembly and the second flap, is preferably designed similarly to the first roller assembly. Therefore, in the remainder of this description, only the first roller assembly 10 will be referred to.

The fastening means 80 is configured to withstand significant stresses related to the use of the massage device 3. During a massage with the massage device 3, the assembly formed by the first flap 8 and the first roller assembly 10 is subjected to the force F2 transmitted by the transmission mechanism 60, the reaction force F3 of a skin fold, and the reaction force F4 of the pivot axis 78. These three forces F2, F3, F4 are represented by arrows on the FIG. 19 . All these forces produce a bending stress on the assembly formed by the first flap 8 and the first roller assembly 10. The fixed-type connection between the first flap 8 and the body 11 is thus designed to resist these bending forces while offering a reversible fixing.

Advantageously, the body 11 includes a housing 82 into which the end 76 of the first flap 8 is inserted. The end 76 has a shape complementary to the shape of the housing 82. This not only provides a robust connection between the body 11 and the first flap 8 but also ensures a high level of sealing of the treatment chamber 7. Indeed, when the end 76 is inserted into the housing 82, air cannot circulate, or only with great difficulty, between the treatment chamber 7 (on the inside of the first roller assembly) and the outside of the treatment chamber (on the outside of the treatment chamber).

In particular, the housing 82 and the end 76 have at least roughly prismatic shapes. The housing 82 includes a blind opening extending along the previously defined axis A1. The housing 82 is sufficiently deep and wide to provide substantial contact surfaces between the first flap 8 and the body 11, in order to withstand the bending forces mentioned above. Thus, the depth of the housing 82 is preferably at least 10 mm, or even at least 15 mm along the axis A1. The width of the housing 82 along the X axis is preferably at least 20 mm, or even at least 36 mm.

With reference to the FIG. 16 and to the FIG. 20 It can be observed that the first flap 8 and the first roller assembly 10 include conjugate alignment means, respectively referenced 84 and 85. The alignment means 84 and 85 are configured to ensure the correct positioning and orientation of the first roller assembly 10 relative to the first flap 8. In particular, the alignment means 84 and 85 are configured to prevent the first roller assembly 10 from being attached to the first flap 8 with an incorrect orientation around axis A1. The alignment means 84 and 85 are also configured to prevent the first roller assembly 10 from being attached to the second flap 9 and to prevent the second roller assembly 13 from being attached to the first flap 8. In this case, the alignment means 84 is formed by a protrusion profiled along axis A1. This protrusion is positioned on an internal face 89 of the end 76.

Advantageously, the first roller assembly 10 is fixed to the first flap 8 by a fixing clip 86. The fixing clip 86 is in particular configured so that the first roller assembly 10 can be detached from the first flap 8 and reattached to the first flap by a simple pulling movement parallel to the axis A1 on the first flap, and without using any tool.

In particular, the fastening clip 86 consists of an elastic tab 87 and a receiving surface 88 for receiving the elastic tab when the first roller assembly is attached to the first flap. According to the embodiment shown, the elastic tab 87 is integral with the body 11 of the first roller assembly 10, while the receiving surface 88 is formed on one face of the first flap 8. Alternatively, this arrangement could be reversed: the elastic tab could be attached to the first flap and the receiving surface could be arranged on the body 11.

As can be seen on the FIG. 19 The elastic tab may be L-shaped. The elastic tab 87 may include a first portion by means of which it is fixed to the body 11, for example embedded in the body 11, and a second, projecting, elastically deformable portion intended to cooperate with the receiving surface 88 of the first flap. The elastic tab 87 may advantageously be a metal blade. The receiving surface 88 may be a recess (visible on the FIG. 17 ) formed on an external face 90 of the first flap.

The external face 90 designates the face of the end 76 of the first flap 8 facing outwards from the massage device 3. The external face 90 is opposite the internal face 89, which is facing towards the treatment chamber 7. This arrangement makes it possible to maintain a large bearing surface between the internal face 89 of the end 76 of the flap 8 and the corresponding wall of the housing 82. The fixing means 80 is thus better able to resist the bending forces to which it is subjected.

To attach the first roller assembly 10 to the first flap, simply move the first roller assembly towards the first flap along axis A1. When the first flap 8 enters the housing 82, a distal face 91 of the end 76 of the first flap exerts pressure that tends to elastically deform the elastic tab 87. A "distal face 91" is a face of the first flap 8 positioned at the end of the first flap 8 opposite its first end 75. Once the end 76 of the first flap is fully inserted into the housing 82, the elastic tab 87 relaxes in the recess of the receiving surface 88. The relaxation of the elastic surface may produce a click that confirms the correct positioning of the roller assembly 10.

Advantageously, the elastic tab 87 projects from a wall of the housing 82, and the receiving surface 88 is formed on the end 76 of the first flap inserted inside the housing 82. The fastening means 80 is thus completely concealed and cannot be operated unintentionally. This arrangement also allows the assembly formed by the first flap 8 and the first roller assembly 10 to remain particularly compact.

In relation to Figures 19 and 21, the first roller assembly 10, and in particular the drive means 16, also includes an electric motor 92 configured to drive the roller 12 in rotation around the axis X3. The electric motor 92 is housed inside the roller 12. It is therefore understood that the roller 12 is hollow and has sufficient internal volume to accommodate the electric motor 92. The electric motor 92 advantageously has a cylindrical shape of revolution that fits easily inside the volume of the roller 12.

The electric motor 92 comprises a first face 103 and a second face 104 opposite the first face 103. These two faces 103 and 104 form the two bases of the cylindrical shape of the electric motor 92. The electric motor 92 includes a rotating shaft 96 projecting from the second face 104. The rotating shaft 96 is fixed to the roller 12, for example, by means of a pinion 97 that meshes with corresponding teeth inside the roller 12. A housing for the electric motor 92 is fixed to the body 11 of the first roller assembly 10, notably by means of a fixing screw 105. The fixing screw 105 passes through a first arm 106 of the body 11 and the first face 103 of the electric motor 92. The roller 12 is itself supported by the body 11 by means of bearings 98 and 99. A first bearing 98 is a bearing with bearings arranged between a second arm 107 of the body 11 and the roller 12. A second bearing 99 is a plain bearing formed on the periphery of the housing of the electric motor 92, near its first face 103.

As a note, the electric motor 92 is held inside the roller 12 on the side of its first face 103 by means of the fixing screw 105, and on the side of its second face 104 by the roller 12 to which it is fixed by means of the pinion 97, the roller itself being supported by the bearing 98.

To supply electrical energy to the electric motor 92, the first flap 8 and the first roller assembly 10 include conjugate electrical connection means, respectively referenced 93 and 94 (visible in Figures 16 and 20). The electrical connection means 93 may include first electrical contactors integral with the first flap 8 and arranged on the distal face 91 of the first flap 8. The electrical connection means 93 are electrically connected to the printed circuit board 41 and/or the printed circuit board 42 by means of electrical wires. These electrical wires may optionally be integrated into a channel provided in the first flap 8. The length of these electrical wires is determined to allow the first flap to pivot about the axis X1.

Furthermore, the electrical connection means 94 may include second electrical contactors arranged at the bottom of the housing 82, opposite the first electrical contactors. The first and second electrical contactors are thus well protected and compact. The electrical contactors may advantageously include elastic sections, capable of deforming along axis A1, to ensure good electrical contact. When the first roller assembly 10 is clicked into the first flap 8, the electrical contactors are automatically made electrical contact.

In this case, the electrical connection means 93 and 94 each comprise six electrical contactors. These electrical contactors can be configured not only to supply electrical energy to the electric motor 92, but also to transmit electrical signals from sensors integrated into the massage device 3. Alternatively, the number of electrical contactors could be different.

The electrical connection means 94 are electrically connected to the electric motor 92. For this purpose, the first roller assembly 10 includes electrical conductors 95 arranged on a lateral face of the roller assembly, in particular along the first arm 106 of the body 11. The electrical conductors 95 are connected to the first face 103 of the electric motor 92, which is opposite the face 104 from which the rotating shaft 96 is salient.

The first roller assembly 10 also includes a valve 100 fixed to the body 11. The valve 100 is configured to seal an interface between the roller 12 and the body 11. The valve 100 includes, in particular, a wall extending along an external face of the first roller assembly, and covering an air gap formed between the body 11 and the roller 12. The valve 100 can advantageously be in contact with the roller 12 and with the body 11. Advantageously, the valve 100 does not exert a significant force on the roller 12 and therefore does not prevent it from rotating. The flap 100 can be fixed to the body 11 by means of a fixing clip 101. The flap also includes an opening 102, opposite the housing 82, through which the end 76 of the first flap 8 passes. The flap 100 can thus contribute to the sealing of the interface between the first flap 8 and the body 11.

The massage device 3 may also include a set of sensors. The sensors may provide information relating to the characteristics of the skin treated by the massage device, and/or information relating to the handling of the massage device by its user, and/or information relating to the status of the massage device 3.

Information relating to the characteristics of the treated skin may, for example, include information relating to skin elasticity and/or information relating to the thickness of a skin fold.

Information relating to the handling of the massage device may, for example, include information relating to the speed of movement of the massage device on the surface of the skin and/or information relating to the pressure exerted with the massage device on the skin.

Information relating to the status of the massage device may, for example, include information relating to the pressure in the treatment chamber 7, and/or information relating to the position of the flaps 8 and 9, and/or information relating to the beat frequency of the first flap 8, and/or information relating to the speed and/or direction of rotation of the roller 12, and/or information relating to the speed and/or direction of rotation of the roller 15. The information provided by the sensors on board the massage device may be displayed on the display screen 38 to inform the user of the massage device.

The information provided by the sensors integrated into the massage device can also be used by control means integrated into the massage device to control the drive means 18 and/or the drive means 16 and/or the drive means 17. For this purpose, the control means may include a microprocessor and memory containing a computer program. The computer program may include coded instructions to control the drive means 16, 17, and 18 based on signals received by said sensors. The microprocessor can execute the computer program. This microprocessor and memory may advantageously be integrated into one or more of the printed circuit boards 41, 42.

For example, data from the massage device's sensors can be analyzed to adjust the direction and speed of rotation of each of the two rollers and the flapping speed. This adjustment increases the effectiveness and comfort of the massage. This adjustment of the drive system can occur instantaneously, in real time, or after a data accumulation and analysis phase, including through artificial intelligence approaches, in order to personalize and adapt the massages. In this case, the accumulated data can be labeled in relation to a person treated with the massage device. This data can include information characterizing that person, the type of treatment applied, and the anatomical area treated.

In particular, the massage device advantageously includes a sensor 108 configured to estimate the height of the skin fold in the treatment chamber 7. The sensor 108 may be an optical sensor, for example, a time-of-flight sensor. Such a sensor may include a light emitter, for example, a light-emitting diode or a laser emitter, in particular an infrared light emitter. The sensor 108 also includes a light detector, in particular an infrared light detector. By measuring the time between the emission of the light rays and their detection by the detector, the distance between the sensor and a surface on which the light rays have been reflected can be deduced. The sensor 108 is advantageously integrated into the back wall 28. Since the back wall 28 extends parallel to the skin surface to be massaged, positioning the sensor 108 on this back wall 28 allows for efficient and reliable measurement of the skin fold height formed in the treatment chamber 7. The back wall 28 therefore advantageously includes an opening 109 positioned opposite the sensor 108. The sensor 108 is advantageously positioned in the center of the back wall 28, specifically between the two openings 52 connected to the suction duct 50. The central positioning of the sensor 108 allows for measurement of the skin fold height in the center of the treatment chamber 7, at the point where the skin fold is most prominent. The sensor 108 can be integrated into a third printed circuit board 110 that extends horizontally above the bottom wall 28. The third printed circuit board 110 is electronically connected to one of the printed circuit boards 41, 42 by means of a ribbon cable 111. A sealing means can advantageously be provided between the sensor 108 and the opening 109 to prevent any air leakage through the opening 109. In particular, a transparent window covering the opening 109 can be provided. An advantage of using an optical sensor to measure skin fold height is that this measurement can be performed without disturbing the negative pressure created in the treatment chamber.

The massage device also includes a sensor 112 configured to estimate the displacement of the massage device on the skin surface. The sensor 112 may also be an optical sensor. The sensor 112 may also include a light emitter, for example, a light-emitting diode (LED) or a laser emitter, including an infrared light emitter. The sensor 112 may also include a light detector, including an infrared light detector. The detector is configured to detect an image resulting from the reflection of light rays on the skin surface. This image comprises a set of pixels. By comparing the pixels of successive images obtained with the detector, a displacement distance and/or direction of movement of the sensor 112 between two successive images can be calculated. By relating the displacement of successive images to the time separating two successive images, a displacement velocity of the sensor 112 can be deduced.

Advantageously, the sensor 112 is positioned close to the skin surface to obtain an accurate measurement. An advantageous positioning for the sensor 112 is on a lower edge of either of the lateral walls 26 or 27. In this case, the sensor 112 is positioned substantially in the center of the lateral wall 27. The sensor 112 can be integrated into a fourth printed circuit board 113 that extends along the lateral wall 27. The fourth printed circuit board 113 is electronically connected to one of the printed circuit boards 41, 42 by means of the electronic ribbon cable 111.

The electronic cable 111 is an electrical connection means that extends from the lower part 22 to the upper part 21 via the intermediate part 23 of the massage device. The electronic cable 111 extends around the periphery of the speed reducer, specifically between the chassis 30 and the housing 29.

The massage device also includes a sensor 114 configured to estimate the position of the first flap 8 relative to the frame 30. The sensor 114 may, in particular, be a Hall effect sensor, and the first roller assembly 10 may include a magnetic element 115, in particular a magnet, cooperating with the sensor 114. The magnetic element 115 may advantageously be integrated into one of the arms 106 or 107 of the body 11 of the roller assembly (in this case, the second arm 107). The sensor 114 is capable of detecting the passage of the magnetic element 115 in front of it. Thus, sensor 114 is capable of detecting the position of the first flap 8. Advantageously, the second flap 9 is also equipped with a magnetic element, specifically a magnet, which cooperates with sensor 114. Therefore, sensor 114 makes it possible to determine the position of each of the two flaps 8 and 9 and to deduce the gap between them. From the position of the two flaps 8 and 9, information about the volume of the treatment chamber 7 at any given time can be deduced. Sensor 114 can be integrated into the fourth printed circuit board 113, which extends along the side wall 27.

In addition, the massage device could also include other sensors, for example an atmospheric pressure sensor in the treatment chamber.

The massage device 3 described above can be used in several operating modes. In the first operating mode, an oscillating rotational movement of the first roller assembly 10 is combined with a rotation of roller 12 in a first direction of rotation that tends to direct the skin towards the bottom of the treatment chamber 7, i.e., a direction that tends to promote the formation of a skin fold. This first direction of rotation is notably illustrated by an arrow F5 on the FIG. 12 The combination of the oscillating rotational movement of the first roller assembly 10 with a rotation of the roller 12 in the first direction of rotation creates a particularly pronounced striking effect, i.e., it is possible to form a particularly large skin fold in the treatment chamber and to prevent the skin from slipping in contact with the roller 12.

Finally, thanks to the invention, we have a high-performance massage device. The massage device is particularly robust, powerful enough to mobilize skin tissue, ergonomic, and offers a wide range of operating modes to provide massages tailored to a broad spectrum of needs.

Claims (10)

Massage device (3) comprising:
- a chassis (30),
- a treatment chamber (7) inside which a skin fold is intended to be formed,
- a first panel (8) assembled to the chassis by a pivoting connection means (34) around a first axis of rotation (X1),
- a first training means (18) configured to animate the first part of a rotational movement around the first axis (X1),
- a first roller assembly (10) comprising a body (11) fixed to the first flap, and a roller (12) assembled to the body by a pivot linkage means (81) around a second axis of rotation (X3), the roller (12) being arranged in the treatment chamber (7), the roller being intended to massage the skin fold, the first roller assembly further comprising a second drive means (16) configured to drive the roller in rotation around the second axis of rotation.
Massage device (3) according to the preceding claim, characterized in that the first flap (8) and the first roller assembly (10) comprise conjugate electrical connection means (93, 94), configured to supply the second drive means (16) with electrical energy.
Massage device (3) according to any one of the preceding claims, characterized in that the first axis of rotation (X1) is parallel to the second axis of rotation (X3).

Massage device (3) according to any one of the preceding claims, characterized in that the second drive means (16) comprises an electric motor (92), the electric motor being arranged inside the roller (12) of the first roller assembly (10).
Massage device (3) according to the preceding claim, characterized in that the electric motor (92) comprises a first face (103) and a second face (104) opposite the first face, the first roller assembly further comprising:
- electrical conductors (95) to power the electric motor connected to the first face of the electric motor (92),
- fastening means, in particular a fastening screw (105), the fastening means cooperating with the first face of the electric motor and with the body (11) of the roller assembly, and
- a rotating shaft (96) intended to be driven by the electric motor (92), the rotating shaft being fixed to the roller (12), the rotating shaft protruding from the second face (104) of the electric motor, and
- at least one bearing (98) configured to guide the rotation of the roller (12) relative to the body (11).
Massage device (3) according to any one of the preceding claims, characterized in that it comprises means for controlling an electric current supplying the first drive means (18), the control means being configured so that the rotational speed of an output shaft (48) of the drive means is stable regardless of the resistance exerted by a skin fold on the first flap.
Massage device (3) according to any one of the preceding claims, characterized in that it further comprises:
- a second panel (9) assembled to the chassis (30) by a pivoting connection means (35) around a third axis of rotation (X2),
- an adjustment means (19) configured to adjust the orientation of the second flap around the third axis of rotation, and
- a second roller assembly (13) comprising a second body (14) fixed to the second flap, and a second roller (15) assembled to the second body by a pivoting linkage means about a fourth axis of rotation (X4), the second roller (15) being arranged in the treatment chamber (7), the second roller (15) being intended to massage the skin fold, the second roller assembly further comprising a second drive means (17) configured to drive the second roller (15) in rotation about the fourth axis of rotation.
Massage device (3) according to any one of the preceding claims, characterized in that it comprises a first sensor (108) configured to estimate a skin fold height in the treatment chamber (7), and control means configured to control the first drive means (18) and/or the second drive means (16) as a function of the skin fold height estimated by the first sensor.
Massage device (3) according to any one of the preceding claims, characterized in that it comprises a second sensor (112) configured to estimate a displacement of the massage device on the surface of the skin, and control means configured to control the first drive means (18) and/or the second drive means (16) as a function of the displacement estimated by the second sensor.
Massage device (3) according to any one of the preceding claims, characterized in that it comprises a third sensor (114) configured to estimate a body position (11) of the second roller assembly (10) relative to the chassis (30), and control means configured to control the first drive means (18) and/or the second drive means (16) according to the body position estimated by the third sensor.