CN210018212U

CN210018212U - Hair dressing device

Info

Publication number: CN210018212U
Application number: CN201822251806.4U
Authority: CN
Inventors: 尼古拉斯·洛谢; 沃兰迪·吉威勒
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2017-12-29
Filing date: 2018-12-29
Publication date: 2020-02-07
Anticipated expiration: 2028-12-29
Also published as: FR3076188B1; CN109984442A; WO2019129873A1; CN109984442B; EP3731691B1; FR3076188A1; EP3731691A1

Abstract

The utility model relates to a hairdressing equipment, hairdressing equipment (1) includes main part (2), main part (2) load motor (3) and drive mechanism (4) of the hair lock (C) of drive treating combing, drive mechanism (4) quilt motor (3) drive, hairdressing equipment (1) characterized in that, hairdressing equipment (1) includes complementary first and second connecting parts (16, 17), complementary first and second connecting part (16, 17) respectively with motor (3) with drive mechanism (4) connects, complementary first and second connecting part (16, 17) move between connection configuration and disengagement configuration relative to each other.

Description

Hair dressing device

Technical Field

The present invention relates to the general technical field of hairdressing or haircut devices, preferably for domestic use, and more precisely to portable electric haircut devices for ensuring the shaping of hair and, in particular, the straightening of hair.

The present invention relates more particularly to a hairdressing apparatus designed to be held and operated by hand and comprising at least a main body carrying a (embarquer) motor and a driving mechanism of the lock of hair to be combed, said driving mechanism being movably mounted with respect to said main body and intended to be driven by said motor in order to drive the lock of hair in motion with respect to said main body.

Background

It is known to use electric hair cutting devices to shape hair, and in particular to curl or straighten hair.

Some of these devices are equipped with a rotating mandrel for curling the lock of hair in order to shape it automatically. In particular, a hair curling device is known, the rotating spindle of which is connected to a drive motor via a torque limiting device, which consists of two discs, which are carried by the output shaft of the motor and the spindle, respectively. The two disks are pressed against one another in order to adhere to one another by friction and thus ensure a mechanical transmission between the motor and the spindle. In case the motor is subjected to an excessive load, exceeding a predetermined level, the discs will slide relative to each other instead of rotating together and thus interrupt the mechanical connection between the motor and the spindle. Such a safety device allows to prevent possible damage of the motor or possible injury of the user when hair is stuck in the mandrel (for example due to knots in the hair) or when the control means of said motor fail.

These known haircutting devices, although generally satisfactory, still have certain drawbacks.

One of the drawbacks is that the drive means (spindle) for the hair may be actuated by the motor in unsuitable configurations which do not necessarily indicate the presence of a torque with an excessively high value which can trigger the torque limiter.

In particular, the motor is able to drive the rotation of the mandrel even when the mechanism (movable tile) that allows the hair to be associated with the mandrel is in the inactive configuration (for example if the tile is in the open position).

The design of the known hair cutting devices therefore does not allow to ensure that the drive mechanism of the hair can not be driven when the device is in a predetermined specific configuration. This is obviously a source of risk, both for the device itself and for the user.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is therefore to overcome the various drawbacks listed above and to provide a new hair cutting apparatus having a particularly simple and reliable design, offering a high degree of safety in use.

Another object of the present invention is to provide a new hair cutting apparatus that is particularly compact and simple to use.

Another object of the present invention is to provide a new hair cutting device that is particularly intuitive to use.

Another object of the present invention is to provide a new hair cutting device that is particularly durable.

Another object of the present invention is to provide a novel hair cutting device, the design of which allows to improve the quality and repeatability of the hair shaping results.

Another object of the present invention is to provide a new hair-cutting apparatus of particularly simple and inexpensive construction.

Another object of the present invention is to provide a new hair cutting device that is particularly reliable.

Another object of the present invention is to provide a new haircutting device that allows straightening the hair in a particularly simple, quick and effective manner.

The object of the present invention is achieved by a hairdressing apparatus designed to be held and operated by hand and comprising at least a main body carrying a motor and a drive mechanism driving a lock of hair to be combed, the drive mechanism being movably mounted with respect to the main body and intended to be driven by the motor so as to drive the lock of hair in motion with respect to the main body, the hairdressing apparatus being characterized in that it comprises complementary first and second connecting parts connected respectively with the motor and with the drive mechanism, the complementary first and second connecting parts being movable with respect to each other between a connected configuration in which the complementary first and second connecting parts are in contact with each other so as to allow the motor to drive the drive mechanism, in the disengaged configuration, the complementary first and second coupling parts are spaced apart from one another so that the motor cannot drive the drive mechanism.

Drawings

Other characteristics and advantages of the invention will be apparent and more particularly apparent from a reading of the following description, given by way of non-limiting example with reference to the accompanying drawings, in which:

fig. 1 shows, according to a perspective view, a hairdressing apparatus according to the invention in a first working configuration, in which the drive mechanism of the apparatus is in a working state, which allows a mechanical drive connection to be established between the drive mechanism and the lock of hair to be combed, the hairdressing apparatus here constituting an automatic straightener;

figure 2 schematically illustrates the apparatus of figure 1 according to a cross-section;

fig. 3 schematically illustrates the apparatus of fig. 1 and 2 according to an axial cross-section.

Figure 4 shows the device of figures 1 to 3 according to a perspective schematic view, this time in its second working configuration, which corresponds to a release state of the drive mechanism, in which no mechanical drive connection can be established between the drive mechanism and the lock of hair to be combed.

Figure 5 schematically illustrates the device of figure 4 according to a cross-section.

Figure 6 schematically illustrates the apparatus of figure 5 according to an axial cross-section.

Fig. 7 schematically illustrates the apparatus of fig. 5 and 6 according to an axial sectional view reversed with respect to fig. 6.

Figure 8 schematically shows the device according to the invention being used.

Detailed Description

The hairdressing apparatus 1 according to the invention is designed for gripping and operating with the hand. The hair-cutting apparatus 1 is therefore a portable and manual apparatus, preferably for the home use of a user, who has no expertise in the field of hair dressing or hair cutting, that is to say in shaping hair, and in particular in straightening hair. Preferably, according to the embodiment shown in the figures, the hair cutting device 1 forms a straightener that allows the user to straighten the hair, preferably with the aid of heat and pressure. Preferably and as shown, the apparatus 1 forms an automatic straightener, that is to say the apparatus 1 is designed to limit the active intervention of the user, who does not perform the actions of a particular technique, such as actions and operations that the hairdresser can perform in order to obtain a similar result. The automatic feature of the device 1 allows in particular the device 1 itself to ensure the relative movement of the lock of hair to be combed and of the device 1. Preferably, the device 1 is designed to be substantially fixed (with respect to the user's head) and to move the locks of hair at the same time.

However, the invention is not limited to this particular embodiment, and it is equally conceivable for the haircutting device 1 to form a hair curler, an embosser, or any other type of automatic or non-automatic hair shaping device, for example. However, for the sake of brevity, the following description will focus only on the hair cutting device 1 ensuring the straightening function.

The device 1 according to the present invention, as shown in the figures, comprises at least one main body 2, said main body 2 itself advantageously comprising a casing, for example realized by injected plastic material. The body 2 may have the form of a single piece (as shown) or alternatively of assembled parts, optionally movable with respect to each other (variants not shown). The device 1 advantageously comprises a handle 2A, said handle 2A being intended to be manually gripped in order to operate the device 1. The handle 2A is advantageously formed by a rear portion 200 of the casing and extends itself, towards the rear, out of a power supply cable (not shown) and, towards the front, out of a movable portion (active) 201, the movable portion 201 being intended to receive the lock of hair C in order to shape it (in this case, to straighten it).

The body 2 carries an electric motor 3, the motor 3 being for example an electric motor and preferably a gear motor as shown. The motor 3 comprises a rotating motor shaft 3A, the motor rotating shaft 3A being either directly formed by the output shaft of the motor 3 (variant not shown) or being drivable by the output shaft 3B of the motor (variant shown), preferably by means of a reduction system. The reduction system comprises, for example, two

gears

30A, 30B, the two

gears

30A, 30B being carried by the motor shaft 3A and by the output shaft 3B, respectively. However, the present invention is not limited to the embodiment of the motor 3 equipped with the rotating motor shaft 3A. Said motor 3 may alternatively be formed, for example, by a linear actuator, without going beyond the scope of the present invention.

As shown, the body 2 also carries a drive mechanism 4 for the lock of hair C to be combed. Said drive mechanism 4 is movably mounted with respect to said main body 2 and is intended to be driven by said motor 3 so as to drive said lock of hair C in motion with respect to said main body 2, for example at a speed comprised between 1 and 5cm/s, preferably equal to about 2 cm/s. The drive means 4 are therefore designed to advance the lock of hair C to be combed with respect to the body 2 (rifler) and, for this purpose, on the one hand, to establish a mechanical drive connection with the lock of hair C, for example by friction or adhesion, and, on the other hand, to be connected to the motor 3, for example to the rotating motor shaft 3A, so as to be driven by the motor 3. The drive mechanism 4 is advantageously intended to automate haircutting operations, for example to wind the lock of hair C to be combed around the mandrel in order to obtain a curling effect of the hair, or (according to the embodiment shown) to make the lock of hair C to be combed travel between profiled surfaces, which are advantageously complementary, for example straightening plates, embossing plates (complementary undulated plates), or even plates comprising uneven surfaces or projections (for example teeth and/or spikes).

The drive mechanism 4 is advantageously switchable between an operating condition (as shown in figures 1 to 3 and 8), in which a mechanical drive connection can be established (for example by friction or by clamping) between the drive mechanism 4 and the lock of hair C, and a release condition (as shown in figures 4 to 7), in which the mechanical drive connection cannot be established.

The drive mechanism 4 is advantageously intended to receive a lock of hair C in its release position, and the drive mechanism 4 is then able to drive the lock of hair C when the drive mechanism 4 reaches its working condition. For this purpose, the drive mechanism 4 comprises, for example, a motorized roller 40 and a pressing mechanism 41, the motorized roller 40 and the pressing mechanism 41 being arranged in an active region 201, as shown in the figure. The pressing mechanism 41 is advantageously formed by a non-motorized pressing drum (free rotation), which is mounted movably with respect to the motorized drum 40 between a close position and a distant position:

in said close position (as shown in figures 1 to 3 and 8), said squeezing mechanism 41 is close enough to said motorized roller 40 to squeeze said lock C against said motorized roller 40, so as to establish a mechanical driving connection by friction of said lock C, for example according to the principle of two opposite rollers of a rolling mill;

in said distant position (as shown in figures 4 to 7), said squeezing mechanism 41 is sufficiently distant from said motorized pulley 40 so as not to squeeze said lock of hair C against said motorized pulley 40.

In this preferred embodiment, the drive mechanism 4 is in its active condition when the pressing mechanism 41 occupies its close position, and the drive mechanism 4 is in its release condition when the pressing mechanism 41 occupies its remote position. Thus, in the distant position, the user can insert the lock of hair C to be combed between the motorized roller 40 and the squeezing mechanism 41, after which the squeezing mechanism 41 is brought into its close position and thus squeezes the lock of hair C against the motorized roller 40, thus allowing the roller 40 to drive the lock of hair C by friction, the squeezing roller itself advantageously constituting the squeezing mechanism 41 being driven in rotation by the lock of hair C in the direction S2, the direction S2 being opposite to the direction S1 of rotation of the motorized roller 40. The motorized roller 40, as the roller advantageously forming the pressing means 41, is preferably realized by a material facilitating the local adhesion of the hair, for example of the rubber type, elastomer type, or foam type, optionally impregnated with a hair care or hairdressing product. The drive mechanism 4 advantageously comprises a rotation receiving shaft 4A, said rotation receiving shaft 4A advantageously being intended to conduct the kinetic energy generated by the motor 3 to the motorized pulley 40. To this end, and as will be described in greater detail below, the rotating motor shaft 3A is intended to drive in rotation the rotation receiving shaft 4A.

According to the embodiment shown in the figures, the body 2 carries a gripping device 5, the gripping device 5 being switched between an introduction configuration of the lock of hair C and a gripping configuration of the lock of hair C. The introduction configuration (as shown in figures 4 to 7) allows the user to introduce at least one bundle of hair strands C into the gripping means 5. This is therefore an open configuration which allows to position one or more locks C in the gripping means 5. In the gripping configuration, the gripping means 5 perform gripping of the lock or locks C concerned, that is to say the gripping means 5, when in the gripping configuration, perform a localized squeezing of the lock or locks C collected in the gripping means 3, so as to shape the lock or locks C thus wrapped. To this end, the clamping means 5 themselves comprise at least one first jaw 6, the at least one first jaw 6 being movably mounted with respect to the body 2 between at least one open position (as shown in fig. 4 to 7) and a closed position (as shown in fig. 1 to 3 and 8), which correspond to the introduction configuration and to the clamping configuration, respectively. Said first jaw 6 is advantageously arranged substantially opposite a complementary abutment element (for example formed by a second jaw 7), said first jaw 6 being intended to cooperate with said complementary abutment element in order to release or tighten the lock of hair C according to its position in the open or closed position. The complementary abutment element may be fixedly mounted with respect to the body 2 or movably mounted with respect to the body 2 (as shown in the figures) and in this case for example has the form of a second jaw 7, said second jaw 7 being described in detail below. In the embodiment shown in the figures, the body 2 thus advantageously forms a fixed housing in which the movable parts of the gripping means 5 and of the drive mechanism 4 move.

Advantageously, said drive mechanism 4 is designed for advancing the lock of hair C to be combed in said clamping means 5 in a clamping configuration, so as to slide said lock of hair C between the first jaw 6 and a complementary abutment element, advantageously formed by the second jaw 7, and simultaneously against the first jaw 6 and the complementary abutment element. For this purpose, the drive mechanism 4 is advantageously arranged downstream of the gripping device 5 with respect to the direction of travel of the lock of hair C. This means that, before clamping, a portion of the lock of hair received by the clamping device 5 does not come into contact with the drive mechanism 4 and encounters the drive mechanism 4 only after being shaped by the clamping device 5. Preferably, said first jaw 6 carries at least a part of the drive means 4 (as shown in the figures), even alternatively the entire drive means 4. In the embodiment shown in the figures, said first jaw 6 thus carries a motorized roller 40, while said pressing means 41, advantageously formed by a freely rotating roller (not motorized), are preferably carried on said complementary abutment element, advantageously formed by a second jaw 7. In the embodiment shown in the figures, the motorized roller 40 therefore moves together with the first jaw 6, whereas the pressing mechanism 41 moves together with the second jaw 7 in this case.

Advantageously, according to the embodiment shown in the figures, said first jaw 6 is designed to move between its open position and its closed position, while remaining parallel to itself. In other words, when the first jaw 6 is moved from its open position to its closed position, the first jaw 6 remains permanently parallel to itself, that is to say its orientation with respect to the body 2 remains fixed and unchanged, only the position of the first jaw 6 with respect to the body 2 (that is to say the distance between the first jaw 6 and the body 2) being varied. Thus, the stability (assette) of said first jaw 6 advantageously remains constant when said first jaw 6 is moved from its open position into its closed position, that is to say the stability/inclination of said first jaw 6 remains constant regardless of the position (open, closed, intermediate position, etc.) of the first jaw 6.

Said first jaw 6 defines, for example, a squeezing surface 6A, said squeezing surface 6A being intended to be locally in contact with the lock of hair C to be shaped, said squeezing surface 6A being substantially parallel to the mean median plane P_M. The squeezing surface 6A defined by the first jaw 6, for example in the context of a hair-cutting device for straightening hair, is a substantially flat surface, as is the opposite squeezing surface 7A, the opposite squeezing surface 7A being defined by the complementary abutment element (for example the second jaw 7), the squeezing surface 6A being intended to cooperate with the opposite squeezing surface 7A so as to tighten the lock C. Thus, when said first jaw 6 is moved from its open position to its closed position and vice versa, the pressing surface 6A defined by said first jaw 6 is advantageously permanently parallel to said mean median plane P_M. This feature allows to exert a particularly uniform and uniform stress on the lock of hair C to be shaped, regardless of the position of said lock of hair C in said gripping means 5. The invention is however in no way limited to the embodiment with flat

pressing surfaces

6A, 7A, for example it is entirely conceivable that at least one of said

pressing surfaces

6A, 7A has, for example, an irregular, wavy (for example to achieve curls, waves or large waves) or other surface in order to obtain a shaping effect different from the straightening effect. At least one of the

pressing surfaces

6A, 7A may also comprise one or more protrusions, such as teeth or spikes. The pressing surfaces 6A, 7A are preferably of complementary, conjugated shape (for example one of them is convex and the other is concave, or the

surfaces

6A, 7A comprise respective teeth arranged in a quincunx, or, as shown, the two

surfaces

6A, 7A are substantially flat, planar).

Advantageously, said first jaw 6 is mounted with respect to the body 2 with circumferential translation between its open and closed position (or vice versa). If a circular translational movement is preferred, since it allows in particular to limit the untimely locking risks and costs associated with a traditional rectilinear translational movement, it is however also conceivable that the haircutting device 1 could alternatively implement the first jaw 6 mounted in translation with respect to the main body 2, for example by means of a sliding-rail connection, without thereby going beyond the scope of the present invention.

Preferably, as shown, the first jaw 6 is mounted with respect to the body 2 with circumferential translation according to a deformable parallelogram mounting. To this end, the main body 2 preferably carries a first small link 8 and a second small link 9, the first small link 8 and the second small link 9 respectively extending between a respective

first end

8A, 9A and a respective

second end

8B, 9B, the first ends 8A, 9A being connected (by articulation, preferably by pivoting) to the main body 2 and the second ends 8B, 9B being connected (by articulation, preferably by pivoting) to the first jaw 6. Each of said first and second small links 8, 9 is therefore advantageously mounted in rotation, at least on the one hand with respect to said body 2 and, on the other hand, with respect to said first jaw 6, along respective axes of rotation parallel to each other and perpendicular to the plane inscribed by the circular translation movement of said first jaw 6. This deformable parallelogram mounting, performed by the first and second small links 8, 9, thus allows the first jaw 6 to move with respect to the main body 2 between an extended condition (corresponding to the closed position) and a retracted condition (corresponding to the open position).

As previously indicated and according to the embodiment shown in the figures, the clamping device 5 advantageously comprises a second jaw 7, the second jaw 7 being arranged opposite the first jaw 6, so that, in the clamping configuration, the first jaw 6 and the second jaw 7 are close enough to each other to wrap between them the lock of hair C to be combed, while, in the introduction configuration, the first jaw 6 and the second jaw 7 are far enough from each other to release the lock of hair C. The second jaw 7 is fixedly mountable with respect to the body 2, but is preferably movably mountable with respect to the body 2 between an open position and a closed position, corresponding to the clamping configuration and the introduction configuration of the clamping means 5, respectively.

Advantageously, said second jaw7 are also mounted in circumferential translation with respect to said body 2 between their open or closed positions. This circumferential translation mounting is advantageously obtained by a deformable parallelogram type mounting, preferably similar to the one described above with respect to said first jaw 6. In the case of this preferred figure, the main body 2 carries third and fourth

small links

10, 11, each of said third and fourth

small links

10, 11 extending between a

first end

10A, 11A connected to the main body 2 and a

second end

10B, 11B connected to the second jaw 7. The third small link 10 is substantially identical to, or at least symmetrical to, the first small link 8, while the second small link 9 is substantially identical to, or at least symmetrical to, the fourth small link 11. The hair-cutting apparatus 1 is therefore advantageously such that, at least in its active region 201, the first jaw 6 and the second jaw 7 are opposite the median symmetry plane P_MIn other words, with a symmetrical configuration, the median plane of symmetry P_MIn the embodiment shown in the figures, the intermediate plane P corresponds to the contact plane of the first jaw 6 and the second jaw 7 in their respective closed positions_MAdvantageously parallel to the axis of rotation of said first, second, third and fourth

small links

8, 9, 10, 11.

Preferably, said first and

second jaws

6, 7 are designed to move simultaneously according to respective circular translational movements in opposite directions. This means that, when the clamping device 5 is transferred from its clamping configuration to its introduction configuration, the first and

second jaws

6, 7 move away from each other simultaneously and according to respective symmetrical movements until reaching their respective open positions corresponding to the maximum spacing between the first jaw 6 and the second jaw 7. The first jaw 6 and the second jaw 7 are therefore advantageously moved in phase (phase) so that the clamping means 5 occupy their clamping configuration when the first jaw 6 and the second jaw 7 are each in their closed position. Advantageously, said gripping means 5 are equipped with heating means in order to simultaneously grip and heat the lock of hair C. For example, at least one of said first jaw 6 and second jaw 7 has heating properties, so that its respective defined

pressing surface

6A, 7A has heating properties. In this advantageous case, said clamping means 5 are able to simultaneously locally clamp (squeeze) and heat (preferably by conduction) the lock of hair C, which allows to optimize the shaping effect and in particular to obtain a relatively effective and long-lasting straightening effect.

The main body 2 is also advantageously loaded with a control mechanism 12, the control mechanism 12 being manually activatable to cause the hairdressing apparatus 1 to pass from the first operating configuration, as shown in fig. 1 to 3, to the second operating configuration, as shown in fig. 4 to 7. In other words, the control means 12 are intended to be actively activated manually by the user in order to modify the state of the hair cutting device 1 as a direct answer to the manual activation of the control means 12. The control means 12 are preferably distinct from the drive means 4, that is to say the drive means 4 cannot be used to move the hair cutting device 1 from its first to its second operating configuration by manual actuation. Preferably, said first operating configuration corresponds to an operating condition of said drive mechanism 4, and said second operating configuration corresponds to a release condition of said drive mechanism 4. This means that, in the advantageous embodiment shown in the figures, when the hairdressing apparatus 1 is in its first working configuration, the drive means 4 are able to drive the lock of hair C, that is to say the squeezing means 41 is in its close position, whereas when the hairdressing apparatus 1 is in its second working configuration, the squeezing means 41 is this time in its far position, which allows the release of the lock of hair C. Preferably, according to the embodiment shown in the figures, said control means 12 are associated with said gripping device 5 so as to cause said gripping device 5 to pass from one configuration to the other of its introduction configuration and gripping configuration.

More preferably, said control means 12 are associated with said gripping device 5 so as to cause said gripping device 5 to pass from its gripping configuration to its introduction configuration when said control means 12 are manually activated, said gripping device 5 being preferably permanently restored to its gripping configuration by suitable restoring means. Advantageously, the first working configuration of the hair cutting apparatus 1 thus corresponds to the gripping configuration of the gripping means 5, while the second working configuration of the hair cutting apparatus 1 corresponds to the introduction configuration of the gripping means 5. The control mechanism 12 is mounted, for example, movably with respect to the body 2, between a first position (deployed position, as shown in figures 1 to 3) corresponding to a first operating configuration (and advantageously to a clamping configuration) and a second position (figures 4 to 7) corresponding to a second operating configuration (introduction configuration). The control mechanism 12 may be mounted, for example, pivotally (as shown) and/or translationally, with respect to the body 2, between a first and a second position thereof, corresponding, for example, to a deployed condition of the control mechanism 12, in which the control mechanism 12 protrudes from the body 2 towards the outside of the body 2, and a retracted condition of the control mechanism 12, in which the control mechanism 12 is concealed inside the body 2, under the effect of, for example, manual pressure exerted by a user. The control mechanism 12 therefore advantageously comprises at least one first push-button switch 12A (or peg) which is pivotally mounted with respect to the main body 2 along a first pivot axis parallel to the pivot axes of the first and second small links 8, 9. In order to convert the movement of the control mechanism 12 into the movement of the first jaw 6, the first small link 8 and the control mechanism 12 are each equipped with a

mutual engagement surface

80, 120, the

surfaces

80, 120 cooperating to transmit to the first small link 8a manual control force applied to the control mechanism 12 to rotate the first jaw 6 from its closed position to its open position. The reciprocal engagement surface 120 with which the control means 12 are equipped therefore advantageously forms a cam, preferably a pivoting cam, which stresses the complementary reciprocal engagement surface 80 with which said first small link 8 is equipped, so as to transform the rotary motion of said control means 12 (in this case the first push-button switch 12A) into that of said small link 8, which advantageously drives said first jaw 6 in circumferential translation from its closed position to its open position.

Said return means preferably exert a return force on at least the first small link 8 and comprise, for example, at least one magnet 13, said at least one magnet 13 being connected to said first small link 8 so that said first small link 8 carries said magnet 13. In the case of this figure, the return means also comprise a plate 14 made of ferromagnetic material, said plate 14 being fixed (for example by gluing) to the body 2 so as to permanently establish an attractive magnetic force between the magnet 13 and the plate 14. This magnetic attraction creates a return force exerted by the return means on the first jaw 6 in order to return the clamping means permanently into their clamping configuration and advantageously therefore to return the hairdressing apparatus 1 permanently into its first working configuration, which advantageously corresponds to the clamping configuration of the clamping means 5. In other words, the device 1 adopts a configuration of natural closing/clamping corresponding to the clamping configuration, without external stresses. This allows to obtain optimal hair styling results, regardless of the skill and dexterity of the user. For example, the return means are designed so that the clamping force exerted by the clamping means 5 in the clamping configuration is comprised between 10N and 50N, and preferably substantially equal to 30N.

In the clamped configuration, the magnet 13 rests against the plate 14 and is permanently held in this position by the effect of magnetic attraction. When the user exerts pressure on the first push-button switch 12A towards the inside of the casing forming the body 2, the mutual engagement surface 120 carried by said first push-button switch 12A will push the small link 8, by the action of the cam, against the return force, thus pivoting said small link 8 so as to bring said first jaw 6 from its closed position to its open position.

However, it is entirely conceivable to use, instead of a magnet, any other mechanism capable of exerting a return force, for example a spring mounted between the body 2 and one of the small links 8, 9, even directly between said body 2 and the first jaw 6.

Preferably, said control mechanism 12 also comprises a second push-button push-rod 12B, said second push-button push-rod 12B being advantageously identical to said first push-button switch 12A, and preferably identical to first push-button switch 12A, with respect to an average median plane P as shown in the figures_MAre arranged in a symmetrical manner. In order to preferably implement a simultaneous and synchronous movement of the first and

second jaws

6, 7, the control means 12 are advantageously arranged to move the jaws simultaneouslySimultaneously with the first jaw 6 and the second jaw 7 so as to simultaneously drive the first jaw 6 and the second jaw 7 from their respective closed positions to their respective open positions. In the embodiment shown in the figures, the two

push switches

12A, 12B are connected to each other by a small transmission link 15, so that the actuation force exerted on one of the push switches 12A, 12B is automatically reflected onto the

other push switch

12B, 12A and vice versa.

As shown, the hair cutting device 1 comprises complementary first and

second coupling elements

16, 17, said

coupling elements

16, 17 being coupled to the motor 3 and to the drive mechanism 4, respectively. The complementary first and

second coupling parts

16, 17 are movable relative to each other between a coupling configuration (fig. 1 to 3), in which the complementary first and

second coupling parts

16, 17 are in contact with each other so as to allow the electric motor 3 to drive the drive mechanism 4, and a decoupling configuration (fig. 4 to 7), in which the complementary first and

second coupling parts

16, 17 are distanced from each other so that the electric motor 3 cannot drive the drive mechanism 4. In other words, in the connection configuration, the complementary first and

second connection parts

16, 17 are in contact with each other so as to create a mechanical connection therebetween (for example of the flat-against (appui plan) type) which allows to transmit the movement of the motor 3 to the drive mechanism 4, so that the drive mechanism 4 moves the lock of hair C with respect to the body 2. Conversely, in the disengaged configuration, said complementary first and second connecting

parts

16, 17 are kept away from each other, for example by a few millimetres or even a few centimetres, so as to be no longer in contact, which interrupts the power chain between the electric motor 3 and the drive mechanism 4 and thus prevents possible forces from the electric motor 3 from being transmitted to the drive mechanism 4. Thanks to this technical feature, which allows to establish a clearance space between said complementary first and

second coupling parts

16, 17 at all points thereof in the disengaged configuration, the risk of untimely operation of the drive mechanism 4, while the hair cutting device 1 is in a configuration in which said complementary first and

second coupling parts

16, 17 are disengaged, is minimized.

Preferably, the switching between the connected and disconnected configurations to each other is actively, directly or indirectly controllable by a user. This means that the transition from the connected configuration to the disconnected configuration (or vice versa) is not the result of a purely automated process which may for example spontaneously start in abnormal working situations (for example in the case of hair jamming causing an excessive load, or in the case of an excessive load on the motor and receiving

shafts

3A, 4A). The transition from the connected configuration to the disconnected configuration therefore advantageously depends in this case, directly or indirectly, on the active deliberate action exerted by the user on the hairstyling apparatus 1.

For example, as shown, the control mechanism 12 is connected to at least one of the complementary first and second connecting

parts

16, 17 to control the passage of the complementary first and second connecting

parts

16, 17 from one of the connected and disconnected configurations to the other, and preferably, from the connected configuration to the disconnected configuration. For this purpose, the rotating motor shaft 3A advantageously carries a first connecting part 16, while the rotation receiving shaft 4A of the drive mechanism 4 carries a second connecting part 17. The user is thus able to control the relative movement of the complementary first and second connecting

parts

16, 17 by activating the control mechanism 12, which allows it to move the motorized pulley 40 and therefore the receiving shaft 4A carried by the motorized pulley 40, with respect to the rotary motor shaft 3A, which rotary motor shaft 3A does not move inside the body 2 (except for its own rotation which it carries out).

Thus, according to the embodiment shown in the figures, the control means 12 are advantageously designed for simultaneously controlling:

said complementary first and

second coupling parts

16, 17 pass from one to the other of the coupling and uncoupling configurations,

and from one to the other of the first and second operating configurations.

Advantageously, the hair cutting device 1 comprises return means for returning the complementary first and

second coupling parts

16, 17 into their coupling configuration. This return means is constituted, for example, by a return device as described previously (element 13 and ferromagnetic plate 14) and allows to return said clamping device 5 to its clamping configuration.

In this case, said return means ensure a double function of returning the clamping device 5 into the clamping configuration and of returning the complementary first and second connecting

parts

16, 17 into their connecting configuration. As mentioned previously, the return means 13, 14 also advantageously allow to return the control mechanism 12 into its first position, which is therefore the return position. In the embodiment shown, the first position of the control mechanism 12 corresponds to the coupled configuration of the complementary first and

second coupling parts

16, 17, and the second position of the control mechanism 12 corresponds to the uncoupled configuration, so that the first position is a stable return position and the second position is an unstable position.

In the embodiment shown in the figures, therefore, the control means 12 and the return means 13, 14 advantageously ensure a plurality of functions, in particular the following:

the control means 12 simultaneously control the passage of the clamping device 5 from its clamping configuration to its introduction configuration and also simultaneously control the passage of the control means 4 from its working condition to its release condition and also simultaneously control the passage of the complementary first and

second coupling parts

16, 17 from their coupling configuration to their decoupling configuration;

the return means 13, 14 return the control mechanism 12 to its first position, which corresponds not only to the connection configuration of the

parts

16, 17, but also to the first operating configuration of the device 1 and to the operating condition of the drive mechanism 4, and the return means 13, 14 also simultaneously return the clamping device 5 to its clamping configuration,

and returns the drive mechanism 4 to its operating state.

Advantageously, when the complementary first and second connecting

parts

16, 17 are in the connecting configuration, the motor shaft and the receiving

shaft

3A, 4A are substantially aligned (see fig. 2 and 3), and when the complementary first and second connecting

parts

16, 17 are in the disengaging configuration, the motor shaft and the receiving

shaft

3A, 4A are substantially staggered (see fig. 5 to 7). This means that in this particularly advantageous embodiment, the complementary first and

second coupling parts

16, 17 are not only not in contact with each other but also off-axis in their disengaged configuration, since the motor and receiving

shafts

3A, 4A are offset as described above, which are no longer coaxial in the disengaged configuration. The staggering of the motor and receiving

shafts

3A, 4A, and thus of the complementary first and second connecting

parts

16, 17 carried by them, respectively, further enhances the safety of use by ensuring a complete interruption of power, since the complementary first and second connecting

parts

16, 17 are a few millimetres apart. Furthermore, the implementation of the power interruption is rapid, since the rotary drive is immediately interrupted by the staggering of the motor and receiving

shafts

3A, 4A and does not depend on any mechanical parts (for example springs). Such rapid detachment is particularly useful and desirable in the case of knotted hair, in order to avoid the user feeling that his hair is stretched or pulled. Furthermore, the staggering of the motor and receiving

shafts

3A, 4A is a simple solution to disengage the complementary first and second connecting

parts

16, 17, since it can be significantly linked to the movement of the other parts of the device. The safety and reliability of the device is thus significantly improved.

In the embodiment shown in the figures, the second coupling part 17, advantageously loaded on the first jaw 6, is moved by circumferential translation with respect to the body 2 and with respect to the first coupling part 16 between a disengaged position (fig. 4 to 7), corresponding to the disengaged configuration, and a coupled position (fig. 1 to 3), corresponding to the coupled configuration. The use of a circular translational movement is preferred, but not essential, and it is also possible to use, for example, two successive linear translational movements, the respective directions of which are perpendicular to each other, alternatively.

Advantageously, the hair-cutting apparatus 1 further comprises a torque limiter designed to automatically disengage the motor and receiving

shafts

3A, 4A when the following two conditions are satisfied:

said complementary first and

second connection parts

16, 17 are in a connected configuration,

and the moment conducted to the receiving shaft 4A reaches or exceeds a predetermined threshold, for example between 40mn.m and 120mn.m, preferably equal to 80 mn.m.

The torque limiter is therefore advantageously designed to play its role only when the complementary first and second connecting

parts

16, 17 are connected. In this case, when said threshold value is reached or exceeded, it allows to interrupt the conduction between the motor 3 and the drive mechanism 4 in an automatic manner (without user intervention), which can intervene, for example, when the user's hair has knots or when the device 1 is not properly used. The torque limiter is intended to prevent any risk to the user or the motor 3 when the drive mechanism 4 drives the lock of hair C, the complementary first and second connecting

parts

16, 17 cooperating so as to transmit the rotary motion of the motor shaft 3A to the receiving shaft 4A. The torque limiter may be of any known form and is constituted, for example, by a friction torque limiter or by a resistive (e.g. toothed, roller or ball) frictionless torque limiter.

The torque limiter can for example connect two parts of the motor shaft 3A or two parts of the receiving shaft 4A. However, according to the embodiment shown in the figures and particularly preferred, the complementary first and second connecting

parts

16, 17 form the moment limiter themselves in the connecting configuration. Preferably, said

coupling parts

16, 17 are each formed by a first and a second dish intended to be in ground contact as shown in the figures, so as to simultaneously form a coupling by friction (in this case of the dish/dish type) and a torque limiter (for example by friction).

Thus, in this particularly advantageous embodiment, the complementary first and second connecting

parts

16, 17 are switched between the following configurations:

-a disengaged configuration in which the complementary first and second connecting parts are in the disengaged configuration

16, 17 are far from each other and do not touch, so that the conduction of torque between the motor and receiving

shafts

3A, 4A cannot be ensured;

a connection configuration in which the complementary first and

second connection parts

16, 17 are in contact with each other so as to be able to transmit the rotation of the motor shaft 3A to the receiving shaft 4A as long as the torque transmitted to the receiving shaft 4A is below a predetermined threshold,

and exceeds a predetermined threshold, the complementary first and

second coupling parts

16, 17 move relative to each other while still remaining in contact, which interrupts at the motor and receiving shafts

3A, 4A.

Preferably, in the connected configuration, the complementary first and second connecting

parts

16, 17 engage each other by adhesion (so as to form a friction torque limiter) or by interference (so as to form a frictionless torque limiter, for example a toothed, ball or roller torque limiter), thus forming the torque limiter. The mutual engagement of the

coupling parts

16, 17 using a snap system is advantageous because it allows the generation of a sound (jingle) when the torque limiter is activated, thus alerting the user.

In this particularly advantageous embodiment, the invention allows a particularly high safety in use to be ensured by combining the contactless connection of the complementary first and second connecting

parts

16, 17, preferably under direct control of the user (for example by operating the control mechanism 12), with the function of an automatic torque limiter, which is not directly controlled by the user and depends on the use of the drive mechanism 4 and the electric motor 3.

Advantageously, said main body 2 also carries a comb mechanism 21 of said lock of hair C, said comb mechanism 21 being intended to be driven by said drive mechanism 4, said comb mechanism 21 being advantageously arranged upstream of said gripping means 5 with respect to the direction of travel of said lock of hair C. The comb device 21 comprises, for example, a plurality of teeth or bristles arranged in rows or clusters in order to form combs or brushes. Said comb mechanism 21 advantageously allows to divide the lock of hair C to be shaped into a plurality of small elementary locks of hair, and to distribute these small locks of hair well over the treatment surface formed by said squeezing surfaces 6A, 7A. Said comb mechanism 21 therefore allows the locks C to spread well between the

jaws

6, 7, so as to facilitate their shaping by the

heated jaws

6, 7. Preferably, the comb means 21 also ensure the function of tensioning the lock of hair C, which is achieved in particular by opposing the local frictional resistance of the lock of hair C moving towards the drive means 4. The combing carried out by the combing means 21 then increases the risk of malfunctioning of the device 1, since knots in the hair may get stuck between the teeth of the combing means, creating resistance that can damage the motor. However, the implementation of a moment limiter as described above allows this risk to be very significantly limited. The present invention therefore relates to a hair cutting device 1, said hair cutting device 1 being preferably dedicated to straightening hair, and the closed position of the

jaws

6, 7 of said hair cutting device 1 corresponds to the natural configuration (rest configuration) of the device 1. In this natural rest position, the complementary first and

second coupling parts

16, 17 are in a coupling configuration capable of conducting the driving torque generated by the motor 3, the pressing mechanism 41 occupies its close position, and the clamping device 5 is in a clamping configuration.

In this natural rest configuration of the device 1, the control means 12 are in the first position, which is advantageously an elastic return position. The application of pressure on the control mechanism 12 (in contrast to the elastic return force permanently applied to the control mechanism 12) allows the device 1 to pass from the stable rest configuration to the unstable open configuration in which said device 1 is held by the manual action of the user on the control mechanism 12, so as to force the control mechanism 12 to occupy its second position. In this open configuration, the complementary first and

second coupling parts

16, 17 are in the disengaged configuration, the pressing mechanism 41 is in the remote position and the clamping device 5 is in the introduced configuration. Once the user releases his manual force on said control means 12, the device spontaneously returns to its natural rest configuration (closed configuration as previously described).

The operation and use of the device 1 is for example described below. The user first holds a lock of hair C with one hand and the device 1 with the other hand, while preparing to position the device 1 against, or at least close to, its scalp, so that the drive means 4 are arranged near the scalp, while said comb means 21 are arranged opposite said drive means 4, furthest from the scalp. The user then activates the control mechanism 12 so as to force the apparatus 1 out of its normally closed configuration to reach its unstable open configuration. The user can then move the device 1 in order to easily place the lock of hair C inside said device 1, between the driving mechanism 4 and the squeezing mechanism 41 on the one hand and the first jaw 6 and the second jaw 7 on the other hand, and between the teeth of said comb device 21. Once the lock of hair C is in place inside the apparatus 1, the user releases the control means 12 in order to return the apparatus 1 to its normally closed configuration, in which the motor 3 is able to drive the drive means 4. Said drive mechanism 4 advances the lock of hair C in the comb device 21 at a suitable speed and then into said gripping device 5, said gripping device 5 gripping the hair in a suitable manner so as to straighten the lock of hair C in a particularly permanent, rapid and automatic manner.

Claims

1. Hairdressing appliance, characterized in that the hairdressing appliance (1) is designed for gripping and operating by hand and in that the hairdressing appliance (1) comprises at least a main body (2), the main body (2) carrying a motor (3) and a drive mechanism (4) driving a lock of hair (C) to be combed, the drive mechanism (4) being movably mounted with respect to the main body (2) and intended to be driven by the motor (3) in order to drive the lock of hair (C) in motion with respect to the main body (2), the hairdressing appliance (1) being characterized in that the hairdressing appliance (1) comprises complementary first and second connecting parts (16, 17), the complementary first and second connecting parts (16, 17) being connected with the motor (3) and the drive mechanism (4), respectively, the complementary first and second connecting parts (16, 17) movable with respect to each other between a connected configuration, in which said complementary first and second connecting parts (16, 17) are in contact with each other so as to allow the motor (3) to drive said drive mechanism (4), and a disconnected configuration, in which said complementary first and second connecting parts (16, 17) are distanced from each other so that said motor (3) cannot drive said drive mechanism (4), said motor (3) comprising a rotary motor shaft (3A) and said drive mechanism (4) comprising a rotation receiving shaft (4A), said rotary motor shaft (3A) and said rotation receiving shaft (4A) carrying said complementary first and second connecting parts (16, 17), respectively, and said motor shaft and receiving shaft (3A) when said complementary first and second connecting parts (16, 17) are in the connected configuration, 4A) substantially aligned and when said complementary first and second connecting parts (16, 17) are in a disengaged configuration, said motor and receiving shafts (3A, 4A) are substantially staggered.

2. A hair cutting device as claimed in claim 1, characterized in that said main body (2) further carries a control mechanism (12), said control mechanism (12) being manually activatable to cause the hair cutting device (1) to pass from a first working configuration to a second working configuration, said control mechanism (12) being associated with at least one of said complementary first and second coupling elements (16, 17) to control the passage of said complementary first and second coupling elements (16, 17) from one to the other of said coupling and uncoupling configurations.

3. The hairdressing apparatus according to claim 2, characterized in that the control mechanism (12) is designed for simultaneously controlling:

-said complementary first and second connection parts (16, 17) pass from one to the other of said connection and disengagement configurations,

-passing from one to the other of said first and second operating configurations.

4. The hairdressing apparatus according to claim 2 or 3, characterized by the control mechanism (12) being different from the drive mechanism (4).

5. The hairdressing apparatus according to claim 2 or 3, characterized in that the control mechanism (12) is movably mounted with respect to the main body (2) between a first position corresponding to the connected configuration and a second position corresponding to the disconnected configuration, the first position being a return position.

6. Hairdressing apparatus according to any of claims 1 to 3, characterized in that the drive mechanism (4) is switchable between an active state in which a mechanical drive connection between the drive mechanism and the lock of hair (C) can be established and a released state in which the mechanical drive connection cannot be established.

7. Hair clipping device according to claim 6, characterized in that said driving mechanism (4) comprises a motorized roller (40) and a pressing mechanism (41), said pressing mechanism (41) being movably mounted with respect to said motorized roller (40) between a close position and a far position:

-in said close position, said squeezing mechanism (41) is sufficiently close to said motorized pulley (40) to squeeze the lock of hair (C) against said motorized pulley (40) so as to establish a mechanical driving connection by friction of the lock of hair (C),

-in said distant position, said squeezing mechanism (41) is sufficiently distant from said motorized pulley (40) so as not to squeeze said lock of hair (C) against said motorized pulley (40),

the drive mechanism (4) is in its active state when the pressing mechanism (41) occupies its close position, and the drive mechanism (4) is in its release state when the pressing mechanism (41) occupies its far position.

8. Hair clipping device according to claim 7, characterized in that said main body (2) further carries a control mechanism (12), said control mechanism (12) being manually activatable in order to bring said hair clipping device (1) from a first working configuration to a second working configuration, said control mechanism (12) being connected to at least one of said complementary first and second connecting elements (16, 17) in order to control the passage of said complementary first and second connecting elements (16, 17) from one to the other of said connecting configuration and said disengaging configuration, and said first working configuration corresponding to the working condition of said drive mechanism (4) and said second working configuration corresponding to the releasing condition of said drive mechanism (4).

9. Hair cutting device according to any one of claims 1 to 3, characterized in that the hair cutting device (1) comprises a return member (12, 14) to return the complementary first and second coupling parts (16, 17) into their coupling configuration.

10. The hairdressing apparatus according to any of claims 1 to 3, characterized in that the main body (2) carries a gripping device (5), the gripping device (5) being switchable between an introduction configuration of the lock of hair (C) and a gripping configuration of the lock of hair (C), the gripping device (5) itself comprising at least one first jaw (6), at least one first jaw (6) being movably mounted with respect to the main body (2) between at least one open position and a closed position, corresponding to the introduction configuration and the gripping configuration, respectively.

11. The hair clipping device according to claim 10, characterized in that the main body (2) further carries a control mechanism (12), the control mechanism (12) being manually activatable for turning the hair clipping device (1) from a first working configuration to a second working configuration, the control mechanism (12) being connected to at least one of the complementary first and second connecting elements (16, 17) for controlling the turning of the complementary first and second connecting elements (16, 17) from one of the connecting configuration and the disconnecting configuration to the other configuration, and the control mechanism (12) being connected to the gripping means (5) for turning the gripping means (5) from one of the introducing configuration and the gripping configuration to the other configuration.

12. The hair cutting apparatus according to claim 10, characterized in that said main body (2) further carries a control mechanism (12), said control mechanism (12) being manually activatable to cause the hair cutting apparatus (1) to pass from a first working configuration to a second working configuration, said control mechanism (12) being associated with at least one of said complementary first and second coupling elements (16, 17) to control the passage of said complementary first and second coupling elements (16, 17) from one to the other of said coupling configuration and said uncoupling configuration, and said first working configuration corresponding to the gripping configuration of said gripping means (5) and said second working configuration corresponding to the introduction configuration of said gripping means (5).

13. Hairdressing apparatus according to claim 10, characterized in that the drive mechanism (4) is designed for advancing the lock of hair (C) in the gripping device (5) in a gripping configuration, the drive mechanism (4) being arranged downstream of the gripping device (5) with respect to the advancing direction of the lock of hair (C).

14. The hairdressing apparatus according to claim 10, characterized in that the first claw (6) at least partially carries the drive mechanism (4).

15. The hair cutting device according to claim 10, characterized in that the first jaw (6) is mounted in circumferential translation with respect to the main body (2) between its open and closed positions.

16. Hairdressing apparatus according to claim 10, characterized in that the gripping device (5) is equipped with a heating mechanism in order to grip and heat the hair tresses simultaneously.

17. A hair cutting device as claimed in claim 16, characterized in that the hair cutting device (1) comprises a torque limiter designed to automatically disengage the motor and receiving shafts (3A, 4A) when the following two conditions are fulfilled:

-said complementary first and second connecting parts (16, 17) are in a connected configuration,

-and the torque conducted to the receiving shaft (4A) reaches or exceeds a predetermined threshold value.

18. A hair cutting device according to claim 17, characterized in that the complementary first and second coupling parts (16, 17) form the moment limiter in their coupled configuration.

19. A hair cutting device according to claim 18, wherein in said coupling configuration said complementary first and second coupling parts engage each other by adhesion or interference, so as to thereby form said torque limiter.

20. The hair cutting device according to any one of claims 1 to 3, characterized in that the hair cutting device (1) forms a straightener.