HAIR SHARING DEVICE THAT INCLUDES A SWIVEL BLOWER ATTACHMENT

Description

technical field

[0001] The present invention relates to the field of hair styling appliances, and in particular to the field of hair styling appliances for creating curls and / or waves in hair. The present invention also relates specifically to the field of hair styling appliances that blow hot air.

[0002] More specifically, the invention relates to the technical field of hairdressing appliances comprising a main body including a handle extending longitudinally along a first axis, an air movement device enabling the creation of an airflow between an air inlet and an air outlet, an accessory intended to come into contact with the hair to shape it, said accessory extending longitudinally along a second axis, the main body including the air inlet at a free end and the accessory including the air outlet.

[0003] This type of device is commonly called a blower brush. Previous technique

[0004] Hair styling tools are well-known for straightening hair and / or adding volume and waves. These tools are generally equipped with a rotating attachment forming a barrel around which hair can be shaped or even curled. The barrel is usually heated, which helps to set the style. These tools can blow hot air to heat both the attachment and the hair, as is the case, for example, with the device described in patent EP2131695, which is a blow-dry brush.

[0005] This type of device gives excellent results in terms of hair styling and is therefore highly regarded by users. However, this type of device can sometimes present some difficulties during use, particularly when the device is used by a single person trying to style their own hair.

[0006] Indeed, when a user wants to style the hair at the back of their head, they must perform a complex movement with their arm, forearm, and wrist to correctly position the device behind their head. This movement, and then holding the device in position, can prove tricky, unintuitive, and above all, uncomfortable.

[0007] Indeed, to correctly position a traditional hair styling tool behind the head, the user must raise their arm at shoulder level, extend it to the side, and fully bend their elbow to bring their forearm and hand behind their head. Finally, the user typically bends their wrist to orient the styling tool's attachment correctly in relation to their hair.

[0008] This can sometimes result in complex, uncomfortable, tiring, or even painful positions for using existing devices, or even positions that are impossible for people with joint or muscle problems. The physical effort required to use existing devices, particularly on the back of the head, can therefore be significant or even painful.

[0009] US patent 4,197,448 describes a hair dryer with an adjustable handle position.

[0010] Therefore, there is a need to improve existing devices, particularly in terms of their ergonomics and ease of use. Description of the invention

[0011] The present invention relates to a hair styling device according to claim 1. The preferred features of the invention are described in the dependent claims.

[0012] One objective of the invention is to provide a hair styling device that is particularly ergonomic to use, regardless of the area of ​​the head to be styled.

[0013] Another objective of the invention is to provide a hair styling device that is particularly ergonomic to use, both for a user using the device on themselves (self-styling user) and for a user using the device on another person (styling another person user), and on all parts of the hair.

[0014] Another objective of the invention is to offer a hair styling device that is particularly simple and intuitive to use.

[0015] Another objective of the invention is to offer a hair styling device that is particularly comfortable to use.

[0016] Another objective of the invention is to offer a hairdressing device that is particularly safe.

[0017] Another objective of the invention is to offer a hair styling device that is particularly reliable and robust.

[0018] Another objective of the invention is to offer a hairdressing device that is particularly economical to design and manufacture.

[0019] Another objective of the invention is to offer a hair styling device that is particularly easy to repair.

[0020] Another objective of the invention is to provide a hair styling device that is particularly effective for shaping hair, especially for creating curls or waves or achieving a "blow-dry" effect on hair.

[0021] These objectives are achieved using a hair styling device comprising: a main body comprising a handle extending longitudinally along a first axis, an air movement device enabling the creation of an airflow between an air inlet and an air outlet, an accessory intended to come into contact with the hair to shape it, said accessory extending longitudinally along a second axis, the main body comprising the air inlet at a free end and the accessory comprising the air outlet.

[0022] A handle, for example, is any element that allows a user to grasp and manipulate the hair styling tool, such as a handle. The handle may advantageously form part of the main body or, conversely, be separate from it while remaining connected. Preferably, the handle is aligned with the main body. In other words, both the handle and the main body extend along the first axis.

[0023] The hair styling device is therefore advantageously portable, meaning that it can be transported and oriented in space according to the user's wishes.

[0024] Preferably, the accessory has a circular shape, and advantageously a cylindrical shape, which maximizes the surface area in contact with the hair for styling. Furthermore, this shape facilitates the accessory's rotation.

[0025] Advantageously, the attachment is detachable, meaning it's removable. This allows the user to detach the attachment from the styling tool, separating it from the handle, for example, to replace it with another attachment of a different size and / or shape. This gives the user more freedom to choose the hairstyle they want to create, particularly by selecting the diameter of the curls or waves they will create with the attachment. It also allows the user to choose the most suitable attachment based on their hair type.

[0026] Advantageously, the accessory comprises a contact surface intended to serve as a hair-wrapping surface and a plurality of protruding prongs from said contact surface. These prongs grip the hair and, combined with the rotation of the accessory, tightly wrap it around the winding surface. Preferably, the contact surface is a surface of revolution, advantageously cylindrical, thus forming a mandrel around which the hair can automatically wind as a result of the accessory's rotation.

[0027] According to the invention, said accessory is movable between at least two stable positions defined by design: a first position in which said second axis and first axis form a straight angle with each other, a second position in which said second axis and first axis form an angle different from the straight angle.

[0028] Advantageously, each of the said first and second positions guarantees good air extraction through the air outlet.

[0029] In the preferred case where the hair styling appliance has a drive motor, each of the said first and second positions allows the accessory to rotate around said second axis

[0030] As is well known to those skilled in the art, the expression "straight angle" defines an angle of 0° or 180°.

[0031] In other words, thanks to the invention, it is possible, advantageously at the user's discretion, to position the accessory in two distinct and different ways. In the first position, the first and second axes form a straight angle: they are therefore either aligned (i.e., coincident) or parallel. Thus, in this first position, the accessory and the handle are either aligned (one being in line with the other), (i.e., coincident), or parallel. In the second position, the first and second axes form an angle that is not a straight angle: they are therefore neither aligned, nor coincident, nor parallel. Thus, in this second position, the accessory and the handle form a bend, one being inclined relative to the other.Advantageously, the positions retained are either a position in which the accessory is aligned with the main body, or a position in which the accessory is inclined relative to the main body.

[0032] Thus, thanks to the aforementioned at least two positions of the accessory, it is possible for the user to orient the accessory as desired in relation to the handle by which he holds the hair styling device: the accessory is therefore orientable.

[0033] This significantly improves the ergonomics of the hair styling tool, particularly for a user operating it on themselves (i.e., a user styling their own hair). The user can use the hair styling tool of the invention in the first position to style the hair on the sides of their head, in a manner known as such. Alternatively, the user can also position the accessory of the hair styling tool of the invention in the second position to style the hair at the back and / or sides of their head. The fact that the handle and the accessory are then angled relative to each other prevents the user from having to "bend their arm" (i.e., raise their shoulder to extend their arm perpendicular to their body while fully bending their forearm backward) to reach the hair at the back of their head.Eliminating this complex and uncomfortable movement greatly improves the ergonomics of the hair styling tool and prevents any pain for the user. Furthermore, when styling hair on the top of the head, the user does not need to raise their shoulder and arm (i.e., form a right angle between their arm and body): by positioning the accessory in the second position, the user can reach the top of their head while keeping their arm and shoulder close to their body.

[0034] The ergonomics of the hair styling device as defined by the invention are also optimized for a user operating the device on another person, for example, a hairdresser styling a client's hair. The user can position the attachment in the second position to easily reach the hair on the top of the client's head, while keeping their arm at their side—a particularly ergonomic position. Furthermore, this allows the user to remain at the same height as the client, eliminating the need for them to stand.

[0035] Preferably, the accessory is movable between precisely the first and second positions; that is, the accessory has only two possible positions, each allowing the device to function correctly, and in particular, ensuring proper air extraction through the air outlet. In other words, there is no intermediate position between the first and second positions that allows the device to function correctly.

[0036] The first and second positions are fixed and predetermined. In other words, these are pre-existing positions, defined by the device's designers, in which the attachment is automatically held. This ensures that the user can only select the optimal positions for the attachment, those that guarantee the best ergonomics, positions that have been carefully defined in advance by the device's designers. This is particularly suitable for those new to hairstyling. Therefore, the user cannot manually set the first and second positions; they can simply move the attachment between them, with the attachment automatically being held in either the first or second position.This is particularly beneficial for users without specific knowledge of ergonomics or hairstyling, thus reducing the risk of user error. The accessory's stability in either the first or second position ensures it remains securely in the user's chosen position (in this case, the first or second), regardless of the force applied. This prevents any accidental or unwanted movement of the accessory, especially during hairstyling operations where significant force can be exerted, causing it to shift and leave its position.

[0037] Advantageously, the second axis forms an angle α other than a right angle with the first axis when the attachment is in the second position. In other words, when the attachment is in the second position, the angle formed between the first and second axes is not 90°. This contributes to improving the ergonomics of using the hair styling tool, as explained previously. For example, this angle α is between 100° and 170°, preferably between 130° and 170°, and advantageously equal to 150°. Indeed, the designers of the device observed that these angle ranges were particularly advantageous for optimizing the ergonomics of the hair styling tool, whether for a user operating the device on themselves or for a user operating the device on another person, as explained previously.

[0038] In an advantageous embodiment, the main body includes a joint located between, and connecting, the handle and the accessory. This joint between the handle and the accessory allows the user to easily and readily move the accessory between the first and second positions. Preferably, the joint comprises a first inclined face and a second inclined face, these two faces being movable relative to each other to allow the accessory to move between the first and second positions. The use of inclined faces for the joint results in a robust, reliable, inexpensive, and easy-to-use mechanism.

[0039] According to this embodiment, and in the advantageous case where said first and second positions are stable positions, the joint preferably includes a movable locking device between a free position, allowing the accessory to move between said first and second positions, and a locked position locking said accessory in one of said first or second positions (that is, alternately in either of said first and second positions), the position having been chosen by the user. The locking device is then advantageously actuated by the user when they wish to move the accessory from the first position to the second position or vice versa.Such a locking mechanism ensures that the accessory is automatically held in one of the first or second positions (i.e., alternately in the first and second positions) according to the user's preference, in a safe, reliable, and inexpensive manner. To improve the intuitiveness of the device's operation, the free position is preferably an unstable position, while the locked position is a stable one. This encourages the user to consistently place the accessory in either the first or second position, strongly discouraging (if not prohibiting) placing the accessory in any other position, as the locking mechanism will then refuse to engage. This allows novice users to easily select the best positions for using the device.This also ensures that the accessory remains in either the first or second position and prevents any unwanted movement of the accessory: indeed, positive action by the user is required on the locking device to move the accessory from one position to the other.

[0040] According to one embodiment of the invention, the hair styling device includes a motor for rotating the accessory around said second axis so that the hair can be wrapped around said accessory.

[0041] Advantageously, the motor is an electric motor. However, it is conceivable, without departing from the scope of the invention, that the term "motor" could refer to a motor powered by another energy source, such as pneumatic, magnetic, or even human energy.

[0042] Preferably, the accessory's drive motor is located inside the accessory itself. This embodiment is particularly well-suited in the advantageous case where the accessory is hollow. It allows the accessory's drive motor to be positioned outside the main body, and specifically outside the handle, thus reducing the handle's size, particularly its diameter, which further improves the device's ergonomics.

[0043] The hair styling appliance includes a device for moving air between an air inlet and an air outlet. Thus, the hair styling appliance is advantageously designed to blow air towards the hair to dry and / or style it. Preferably, the main body includes the air inlet, and the attachment includes the air outlet. Even more preferably, the handle may include the air inlet. The airflow path can then be as follows: air is drawn in through an air inlet, advantageously located at one end of the handle, passes through the main body, then through the attachment, before being expelled through the air outlet. Advantageously, the air outlet includes a plurality of holes, which has the effect of evenly diffusing the air towards the hair.

[0044] Preferably, the hair styling appliance includes an air heating device, advantageously located inside the main body, and preferably within the handle. This allows the air drawn in through the air inlet to be heated so that warm air is blown through the air outlet towards the hair. This allows the hair to be dried and / or styled particularly efficiently and quickly. Brief description of the drawings

[0045] [ Fig 1 ] There figure 1 is a first perspective view of an apparatus as defined by the invention, this first view essentially showing the top of the apparatus, the apparatus being in a first position. Fig 2 ] There figure 2 is a second perspective view of the device of the figure 1 This second view essentially shows the underside of the device, the device being in the first position. Fig 3 ] There figure 3 is a view similar to the view of the figure 1 , the device now being in a second position. Fig 4 ] There figure 4 is a view similar to the view of the figure 2 , the device now being in the second position. Fig 5 ] There figure 5 is a side view of the device figure 1 , the device being in the first position. Fig 6 ] There figure 6 is a side view of the device figure 1 , the device being in the second position. Fig 7 ] There figure 7 is a view similar to the view of the figure 6 , in which a hair styling attachment for the device was removed. Fig 8 ] There figure 8 is a side and detail view of a subset of the device of the figure 1 said subassembly being the joint of the device, said joint being in the first position. Fig 9 ] There figure 9 is a view similar to the figure 8 but with the joint in the second position. Fig 10 ] There figure 10 is a view of another subassembly of the hairdressing apparatus in the second position, said other subassembly including in particular the articulation of the figures 8 et 9 in second position. Fig 11 ] There figure 11 is a detailed, exploded view of the joint of the figures 8 et 9 . Description of the implementation methods

[0046] The embodiment of the invention illustrated in the various figures is an embodiment in which the hair styling device of the invention is a blow dryer brush, that is to say, a device combining the functions of drying and brushing hair. More specifically, the device illustrated is a rotating blow dryer brush, meaning that the device, in addition to being able to blow hot air, has a rotating attachment for creating curls or waves in the hair, as will be detailed later.

[0047] As can be seen on the figures 1 à 7 The hair styling appliance comprises a main body 1. As is well known to those skilled in the art, this main body 1 forms a housing containing the principal components of the hair styling appliance. In particular, the main body 1 includes an air heating device, such as a heating element, and also an air movement device, such as an electric motor and fan (or propeller) assembly, which creates an airflow between an air inlet 110 and an air outlet 24. This construction is well known to those skilled in the art and will therefore not be described in further detail here.

[0048] The main body 1 also includes an air inlet 110 located at its free end, as shown in the figures. Such an air inlet is typically used on hair styling appliances of the "blower brush" type. It is through this air inlet 110 that air is drawn in by the air movement device, heated by the air heater, and then extracted from the main body 1 through the end connected to an accessory 2, as will be detailed later. The air inlet 110 typically includes a grille, advantageously removable, designed to prevent foreign matter (such as hair) from being drawn into the air movement device.

[0049] The main body 1 can be formed of two half-shells assembled together in such a way as to facilitate the assembly, disassembly, repair or maintenance of the device.

[0050] The main body 1 extends longitudinally along a first axis PP' as illustrated by the figures 6 et 7 As can be seen, the main body extends between a free end (i.e., one not connected to other parts) and an end designed to receive an accessory, as will be detailed later. More precisely, the main body 1 has a shape of revolution around the first axis P-P', specifically a cylindrical shape. This allows for the combination of ergonomic and component-accommodating functions, as explained previously.

[0051] The main body 1 includes a handle 11 intended to be gripped by the user. Thus, it is by means of this handle 11 that the user can easily grasp the main body 1 and operate the hair styling appliance. As can be seen on the figures 1 à 7 The handle 11 is part of the main body 1 and is formed by a reduced diameter area of ​​the main body 1 to facilitate its grip by the user's hand. Thus, the handle 11 and the main body 1 both extend along the first axis P-P', preferably coaxially.

[0052] The main body 1 includes a first control device 111 designed to control the air movement device and the air heating device. More specifically, the first control device 111 is a sliding button with several positions, four in this case: an off position, a cold air blowing position (i.e. the air heating device is not activated, only the air movement device is activated), a position corresponding to an intermediate level of heating and airflow (i.e. the heating device and the air movement device are not at full power) and a position corresponding to a maximum level of heating and airflow (i.e. the heating device and the air movement device are at full power).

[0053] The main body 1 also includes a second control device 112 which allows the rotation of an accessory 2 to be controlled, as will be detailed later. More specifically, the second control device 112 comprises two pushbuttons arranged side by side, each corresponding to a direction of rotation of the accessory 2: clockwise or counterclockwise. It is then up to the user to select the appropriate direction of rotation depending on the hairstyle they wish to create (in particular, the direction of curls or waves) and the direction in which they intend to use the styling appliance.

[0054] As can be seen in the figures, the main body 1 is connected to a power cord 3 to supply the necessary power to the various components of the hair styling appliance, including the air movement device and the air heating device. The power cord 3 is, in this case, an electrical cord that supplies the components with electrical energy, but other types of power cords could be used, such as a pneumatic cord to supply air to pneumatic components. It could also be imagined, without departing from the scope of the invention, that the hair styling appliance could be powered by an internal source (a battery, for example), in which case it would not require a power cord 3.

[0055] The styling tool also includes an attachment 2 designed to come into contact with the hair to shape it. The attachment is removable, as can be seen in the image. figure 7 As can be seen on the figures 1 à 6 Accessory 2 includes a contact surface 21 designed to serve as a hair wrapping surface. More precisely, the contact surface 21 is a surface of revolution, and in particular a cylindrical surface, in order to optimize the wrapping of the hair around it. Such a contact surface 21 allows for the creation of curls, waves, or a "blow-dry" effect. The contact surface 21 is made of a material that is a good thermal conductor (such as steel or aluminum, for example) in order to diffuse heat from the air towards the hair. This helps to firmly set the hair style.

[0056] Accessory 2 extends longitudinally along a second axis AA', as can be seen on the figures 6 et 7 More precisely, accessory 2 has a shape of revolution around the second axis A-A'. Accessory 2 is hollow.

[0057] Accessory 2 also includes a plurality of prongs 23 projecting from said contact surface 21. By prongs is meant any type of outgrowth designed to grip hair, such as, for example, more or less rigid plastic rods or tufts of synthetic or natural bristles (such as boar bristles). As can be seen on the figures 1 à 6 The aforementioned plurality of prongs 23 is evenly distributed in rows across the contact surface 21. This improves hair grip, proper winding of the hair, and ultimately, the smooth release of the curl at the end of the styling process.

[0058] Accessory 2 also includes an air outlet 24. Air outlet 24 then comprises a plurality of holes, as can be seen on the... figures 1 à 6 The plurality of holes is then evenly distributed over the contact surface 21, notably by being arranged in rows between the prongs 23. This allows the air extracted from the hair styling device to be diffused gently and evenly into the hair. The diameter of each hole in the air outlet 24 decreases in the direction of the airflow, i.e., decreasing from the main body 1 towards the free end of the accessory 2. This helps to maintain a relatively constant airflow despite the increasing distance from the air inlet 110.

[0059] Accessory 2 includes a gripping tip 22 designed to be held by the user while using the hair styling tool. This gripping tip 22 is made of insulating material to prevent heat from the accessory 2 from transferring to the user's fingers. The gripping tip 22 can be mounted freely, allowing it to rotate independently of the accessory 2, so that it remains stationary in the user's fingers even when the accessory 2 rotates. This improves both the comfort of using the tool and the precision of the styling operation. The gripping tip 22 also facilitates the assembly and disassembly of the accessory, as is commonly understood.

[0060] The hair styling device also includes a motor that rotates accessory 2 around said second axis AA' so that the hair can be wrapped around said accessory 2. More specifically, the motor is an electric motor, as is well known as such.

[0061] The motor that drives the rotation of accessory 2 is located inside accessory 2. In other words, the motor for rotating accessory 2 is offset from the main body 1: the motor for rotating accessory 2 is located outside the main body 1. This allows, on the one hand, for space savings inside the main body 1, and therefore, for example, for a significant reduction in its diameter (which ultimately allows for a reduction in the diameter of the handle 11 in the illustrated embodiment), and on the other hand, for improved mass distribution within the hair styling appliance. Indeed, according to this embodiment, the hair styling appliance comprises a first motor inside the main body 1 (the drive motor for the air movement device) and a motor inside accessory 2 (the motor that drives the rotation of the latter).The ergonomics and ease of use of the hair styling device are therefore improved.

[0062] More specifically, as can be seen on the figure 7 The hair styling appliance includes an accessory holder 4 which itself contains the motor to drive the rotation of accessory 2. Accessory 2 is therefore arranged around the accessory holder 4.

[0063] The accessory support 4 includes a proximal part 41 connected to the main body 1. As illustrated in the figure 7 or the figure 10 The proximal portion 41 includes an air guide device 411. The air guide device 411 may include fins, as illustrated, which help to straighten the airflow from the air movement device, so as to create a laminar airflow. Alternatively, the air guide device 411 may include arches.

[0064] The accessory support 4 includes a distal portion 42 located opposite the proximal portion 41. The distal portion 42 is a free portion, that is, it is not connected to the main body 1 as can be seen in the figures 7 Or 10 As can be seen on the figure 10 The distal portion 42 includes a rotational drive device 421 for the accessory 2. More specifically, the rotational drive device 421 for the accessory 2 includes splines designed to engage with a complementary receiving device located inside the accessory 2, as is known to those skilled in the art. The distal portion 42 also includes an assembly and retaining device 422 for the accessory 2, which itself includes, for example, a groove. The groove is then designed to engage with a complementary assembly and retaining device located inside the accessory 2, as is known to those skilled in the art. The assembly and retaining device 422 and the complementary assembly and retaining device for the accessory also allow the user to disassemble the accessory, as is known in this respect.

[0065] Thus, the accessory 2 rotation drive motor is mounted inside the accessory support 4, the output shaft of said motor is connected to the rotation drive device 421 of the distal part 42 of the accessory support 4, said rotation drive device 421 being itself connected to the accessory 2 so as to transmit the rotational movement of said motor to the accessory 2. The proximal part 41 is also connected to the accessory 2 rotation drive motor insofar as the latter generally houses the electrical cables supplying said motor.

[0066] As can be seen in the various figures, the main body 1 also includes a joint 12. The joint 12 is located between the handle 11 and the accessory 2. More precisely, the joint 12 is connected to the accessory support 4 and is positioned at one end of the main body 1. The joint 12 also allows the handle 11 to be connected to the accessory 2, or more precisely, to the accessory support 4. By joint, we mean any device allowing at least one angular displacement between two parts connected to each other by said joint 12, in this case, between the handle 11 and the accessory support 4, and therefore ultimately to the accessory 2.

[0067] THE figures 8 à 11 illustrate in detail an example of a joint used in the hairdressing apparatus shown in the preceding figures. The joint 12 comprises a first inclined face 121, that is, a first piece with one face inclined relative to the first axis P-P'. The joint 12 also comprises a second inclined face 122, that is, a second piece with one face inclined relative to the second axis A-A'. These first inclined face 121 and second inclined face 122 are parts of revolution, in particular portions of a cylinder, beveled cylinders, as illustrated.

[0068] The first inclined panel 121 extends longitudinally along the first axis PP' and around the first axis P-P'. The second inclined panel 122 extends longitudinally along the second axis AA' and around the second axis A-A'.

[0069] The first inclined panel 121 is connected to the handle 11, as can be seen on the figures 6 et 7 , while the second inclined panel 122 is connected to the accessory support 4, more precisely to the proximal part 41 of the latter. Thus, the second inclined panel 122 is connected (indirectly) to the accessory 2.

[0070] The aforementioned first and second inclined surfaces 121, 122 are movable relative to each other, more particularly according to a planar support movement, as illustrated by the figures 8, 9 And 11 Indeed, as can be seen on the figure 11 The first inclined panel 121 comprises a first plane 1211, and the second inclined panel 122 comprises a second plane 1221. Thus, by setting said second inclined panel 122 in motion relative to the first inclined panel 121 (or vice versa), that is, by creating a relative motion between said first inclined panel 121 and second inclined panel 122, the second plane 1221 will move on the first plane 1211 (or vice versa). As can be seen on the figure 11 , the said first plane 1211 and second plane 1221 form portions of disks.

[0071] The aforementioned first inclined panel 121 and second inclined panels 122 are attached to each other in order to maintain the joint 12 as a single unit. Indeed, as can be seen on the figure 11 , the first inclined panel 121 includes a guiding and hooking device 1212 while the second inclined panel 122 includes a complementary guiding and hooking device 1222.

[0072] More specifically, the guiding and hooking device 1212 comprises a plurality of tabs projecting from the first plane 1211 towards the second plane 1221 of the second inclined panel 122. The supplementary guiding and hooking device 1222 includes a groove, or channel, formed on the second plane 1221, inside the second inclined panel 122. Thus, said groove, or channel, receives said plurality of tabs. Each of the tabs has a hook at its free end so as to remain engaged in the groove, or channel, as can be seen in the figure 11 Thus, the guide and hooking device 1212 is designed to penetrate at least partially inside the complementary guide and hooking device 1222, thereby ensuring the assembly between the first inclined panel 121 and the second inclined panel 122. The complementary guide and hooking device 1222 is designed to receive the guide and hooking device 1212 in such a way as to provide translational locking but a degree of rotational freedom. Indeed, the plurality of tabs of the guide and hooking device 1212 can slide inside the groove of the complementary guide and hooking device 1222, without, however, being able to be extracted, thanks to the hooks.

[0073] The joint 12 can take at least two positions: a first position illustrated in figure 8 and a second position illustrated in figure 9 We then understand that the first position of joint 12 of the figure 8 corresponds to the first position of accessory 2 of the figure 1 ou 2 , while the second position of joint 12 of the figure 9 corresponds to the second position of the accessory of the figure 3 ou 4 .

[0074] In the first position, the entire joint 12 is oriented along the first axis P-P', meaning that the first inclined plane 121 and the second inclined plane 122 are both aligned with the first axis P-P'. In other words, the first inclined plane 121 and the second inclined plane 122 extend longitudinally along and around the first axis P-P'. In the first position, the first plane 1211 and the second plane 1221 are arranged in a staggered or "head-to-tail" configuration.

[0075] In the second position, part of the joint 12 is oriented along the first axis PP' and another part of the joint 12 is oriented along the second axis A-A'. Indeed, the first inclined face 121 extends along and around the first axis PP', while the second inclined face 122 extends along and around the second axis A-A'. In the second position, the first plane 1211 and the second plane 1221 are not arranged in a staggered or "head-to-tail" configuration.

[0076] To move the joint 12 from the first position to the second position, it is necessary to rotate the second inclined panel 122 relative to the first (or vice versa) around the first axis P-P'. This will have the effect of orienting the second inclined panel 122 (or the first inclined panel 121) along the second axis AA' instead of the first axis P-P'. Indeed, as explained previously, the only degree of freedom between the first inclined panel 121 and the second inclined panel 122 is rotation, and, given that the first plane 1211 and the second plane 1221 are both inclined, the joint 12 will then leave its straight position to form an elbow, as can be seen in the diagrams. figures 9 And 10 .

[0077] Thus, with the joint 12 connected on one side to the accessory 2 and on the other side to the handle 11, the joint 12 allows the accessory 2 to be mobile between the first position and the second position; that is to say, it allows the accessory 2 to be oriented either along the first axis P-P' or along the second axis A-A', as can be seen in the figures 6 et 7 in particular. Accessory 2 can therefore, depending on the wishes of the user who will handle the device, be either in line with handle 11 or angled relative to handle 11.

[0078] As shown by figure 11 The joint 12 further includes a locking device 123. The latter is then designed to lock the joint 12 in the first position or in the second position, that is to say to maintain the joint 12 in one or the other of the positions, preventing any untimely movement of the joint 12. The locking device 123 is mobile between two positions: a free position, allowing the accessory 2 to move between said at least first position and second position, and a locked position blocking said accessory 2 in one of said first or second position.

[0079] There figure 11 This illustrates in detail the locking device 123. The latter includes a third control device 1231, namely a push button, intended to be operated by the user of the hair styling appliance. The third control device 1231 projects radially from the first inclined face 121, so that it can be easily operated by the thumb or forefinger of the hand of the user holding the hair styling appliance by the handle 11, as can be understood from the diagram. figures 1 à 4 .

[0080] The locking device 123 also includes a lug 1232 connected to the third control device 1231. The lug 1232 projects longitudinally from the first plane 1211 of the first inclined face 121, in the same direction as the guide and hooking device 1212. The lug 1232 is therefore arranged perpendicularly to the third control device 1231. Thus, the lug 1232 is animated by a translational movement, vertical with reference to the figures, when the third control device 1231, in this case the push button, is activated by the user.

[0081] The locking device 123 also includes a first notch 1233 and a second notch 1234, each formed in the second inclined face 122. Said first notch 1233 and second notch 1234 are diametrically opposed, as can be seen in the figure 11 Each of the said first notch 1233 and second notch 1234 is then designed to receive alternately the lug 1232.

[0082] The lug 1232 then prevents relative rotation between the first inclined panel 121 and the second inclined panel 122, thus ensuring that the joint 12 remains in position, regardless of the force exerted on the accessory. Therefore, when the lug 1232 is positioned in the first notch 1233, the joint 12 is locked in its first position; that is, the entire joint 12 is oriented along the first axis P-P', meaning that the accessory 2 and the main body 1 are aligned along the first axis P-P'. The first inclined panel 121 and the second inclined panel 122 are then arranged in a staggered or "head-to-tail" configuration, as explained previously.On the other hand, when the lug 1232 is placed in the second notch 1234, the joint 12 is locked in the second position, that is to say that the second inclined face 122 is oriented along the second axis A-A', that is to say that the accessory 2 is oriented along the second axis AA' and is therefore not aligned with the first axis PP' of the main body 1.

[0083] By activating the third control device 1231, the lug 1232 is moved in translation, the lug 1232 is found inside the complementary guide and hooking device 1222, in this case inside the groove, which allows relative rotation between the first inclined face 121 and second inclined face 122. It is then possible to rotate the joint 12 so as to move it from the first position to the second position or vice versa.

[0084] The locking device 123 also includes an elastic return device, for example a spring (not shown), in the locked position. In other words, the free position is an unstable position while the locked position is a stable position. Thus, without user action on the third control device 1231, the joint 12 is locked, which prevents any undesirable movement of the latter, and therefore any undesirable movement of the accessory 2 relative to the main body 1. In addition, the elastic return device ensures an automatic locking of the joint 12 in one of the first or second positions as soon as the lug 1232 arrives opposite one of the first notches 1233 or second notches 1234, that is to say as soon as the joint 12 arrives in one of the first or second positions, that is to say as soon as the accessory 2 arrives in one of the first or second positions.This makes the use of joint 12 more intuitive.

[0085] As can be seen on the figure 11 The joint 12 includes an air channel 124 designed to allow airflow from the air inlet 110 to the air outlet 24, the air being set in motion by the air movement device, as explained previously. More specifically, the air channel 124 includes a tube 1241 that delimits the first plane 1211 and second plane 1221. Furthermore, the air channel 124 includes a plurality of walls 1242, arranged radially inside the tube 1241. This plurality of walls 1242 thus forms different channels that allow the airflow to be properly directed, particularly along a longitudinal direction. The walls 1242 notably allow the rotational or vortex component of the airflow exiting the air movement device to be reduced, or even eliminated.

[0086] It is therefore understood, in the embodiment illustrated by the various figures, that accessory 2 can move between the aforementioned first and second positions, notably thanks to the relative mobility between the first inclined panel 121 and the second inclined panel 122. Accessory 2 is thus mobile between two positions: a first position in which the second axis AA' and first axis PP' form a straight angle with each other, that is to say, a position in which the accessory 2 is aligned with the main body 1, as can be seen in the figures 1, 2 And 5 ; a second position in which the said second axis AA' and first axis PP' form an angle other than a straight angle, that is to say, a position in which the accessory 2 forms an elbow with the main body 1 as can be seen on the figures 3, 4 And 6 .

[0087] More specifically, as shown by figures 7 And10 , in the second position, the accessory support 4 is oriented along the second axis A-A', that is to say it forms an angle with respect to the main body 1.

[0088] Thus, thanks in particular to the mobility of the joint 12 and the accessory support 4, each of the first and second positions allows the accessory 2 to rotate by the accessory drive motor located inside the accessory support 4.

[0089] As explained previously, according to the design used in the embodiment illustrated and detailed above, the joint 12 is designed to be movable between exactly two positions: the first position or the second position. Consequently, the accessory 2 is movable between exactly the first and second positions. In other words, the accessory 2 is designed to function normally, that is, to be rotated by the accessory drive motor, only in these two positions. This limits the number of possible uses for the hair styling appliance, simplifying its operation for the user while providing an ergonomic device. This also reduces the design and manufacturing costs of the hair styling appliance.The said first and second positions are stable and defined by design, which prevents the user from placing accessory 2 in an unsuitable position (indeed, there is no possible blockage in an intermediate position) and simplifies its handling of the hair styling device, while limiting the design and manufacturing costs of the device.

[0090] However, without departing from the scope of the invention, one could imagine that accessory 2 could move between three, four, five, or a plurality of different positions, each of which would allow the accessory 2 to rotate around the second axis A-A'. One could also imagine that accessory 2 could move between not different predefined positions, but an infinite number of positions; that is, accessory 2 could function in any position. This would be possible, for example, with a flexible joint, such as a universal joint.

[0091] As can be seen in the illustrated embodiment, the second axis AA' forms an angle α other than a right angle with the first axis PP' when accessory 2 is in the second position. More precisely, the angle α is equal to 150° as can be seen in the figure 7This refers to the angle formed between the main body 1, or the handle 11, and the accessory holder 4, or the accessory 2 itself. It has been determined that this value provides a highly ergonomic experience for the user, particularly for those using the styling tool on themselves (self-styling) and wishing to style the back and / or sides of their head. However, it has also been determined that an angle α between 130° and 170°, or even between 100° and 170°, provides ergonomic use for the user.

Claims

1. Hair styling device comprising: - a main body (1) including a handle (11) extending longitudinally along a first axis (P-P'), - a device for moving air enabling the creation of an air flow between an air inlet (110) and an air outlet (24), - an accessory (2) intended to come into contact with the hair for styling the latter, said accessory (2) extending longitudinally along a second axis (A-A'), the main body (1) comprising the air inlet (110) at a free end and the accessory (2) comprising the air outlet (24), said accessory (2) being mobile between at least two stable positions defined by design: - a first position in which said second axis (A-A') and first axis (P-P') form a flat angle between them, - a second position in which said second axis (A-A') and first axis (P-P') form an angle different from the flat angle; the first and second positions being pre-existing positions, defined by the designers of the device, where the accessory is automatically maintained, the main body comprising a joint (12) located between, and connecting, the handle (11) and the accessory (2), characterized in that the joint (12) comprises an air channel (124) designed to allow the air flow to pass from the air inlet (110) to the air outlet (24), the air channel (124) comprising a plurality of walls (1242) forming different channels.

2. Hair styling device according to the preceding claim in which the accessory (2) is mobile between exactly the first position and the second position.

3. Hair styling device according to any of the preceding claims in which the second axis (A-A') forms an angle α different from the right angle with the first axis (P-P') when the accessory (2) is in the second position.

4. Hair styling device according to the preceding claim in which said angle α is between 100° and 170°, preferably between 130° and 170°, and advantageously equal to 150°.

5. Hair styling device according to any of the preceding claims in which the joint (12) comprises a first inclined section (121) and a second inclined section (122), said first inclined section (121) and second inclined section (122) being mobile relative to each other so as to move the accessory (2) between said first position and second position.

6. Hair styling device according to any of the preceding claims in which the joint (12) comprises a locking device (123) mobile between a free position, allowing the accessory (2) to move between said first position and second position, and a locked position blocking said accessory (2) in one of said first or second positions, the position having been chosen by the user.

7. Hair styling device according to the preceding claim in which said free position is an unstable position while said locked position is a stable position.

8. Hair styling device according to any of the preceding claims in which the hair styling device comprises a motor for rotating the accessory (2) around said second axis (A-A') so that the hair can be wrapped around said accessory (2).

9. Hair styling device according to the preceding claim in which the motor for rotating the accessory (2) is situated inside said accessory (2).

10. Hair styling device according to any of the preceding claims in which the air outlet (24) comprises a plurality of holes.

11. Hair styling device according to any of the preceding claims in which the hair styling device includes a device for heating the air.

12. Hair styling device according to any of the preceding claims in which the accessory (2) comprises a contact surface (21) intended to serve as a surface for wrapping the hair and a plurality of protruding studs (23) extending from said contact surface (21).