EP0921744A1

EP0921744A1 - Rotational cylinder for a hair removal device

Info

Publication number: EP0921744A1
Application number: EP96938167A
Authority: EP
Inventors: Klaus Ramspeck; Hans-Eberhard Heintke; Pedro Sanchez-Martinez
Original assignee: Braun GmbH
Current assignee: Braun GmbH
Priority date: 1996-08-06
Filing date: 1996-11-11
Publication date: 1999-06-16
Anticipated expiration: 2016-11-11
Also published as: ATE218824T1; DE59609351D1; TR199900236T2; US5857903A; JP2001502562A; AU7569296A; EP0921744B1; JP3923535B2; WO1998005234A1; ES2177814T3

Abstract

The invention is directed to a rotary cylinder (7) for an epilating appliance comprising several pairs of clamping members (8) arranged in an angularly offset relation to each other, and actuating members (22) serving to move the clamping members (8) in pairs into, and subsequently out of, relative clamping engagement in the area of a plucking zone of the epilating appliance. Further, at least one control member is provided for controlling the actuating members (22). According to the invention, each pair of clamping members (8) has associated to it a separate, individually movable actuating member (22).

Description

Rotary cylinder for an epilation device

The present invention relates to a rotary cylinder for an epilation device and to the epilation device itself. The cylinder consists of several essentially angularly offset pairs of clamping elements and of actuating elements to bring the clamping elements into clamping contact in pairs in the region of a plucking zone of the epilation device and then to bring them into contact separate again. Furthermore, at least one control element for controlling the actuating elements is provided.

Rotary cylinders for epilation devices and epilation devices per se are sufficiently known from the prior art. So they usually have several pairs of clamping elements, which are usually arranged in parallel next to each other and in several rows parallel to the axis of rotation of the rotating cylinder, so that all clamping elements in a row pass through a plucking zone simultaneously. The clamping elements arranged in a row are usually also operated together and thus form a linear plucking area on the skin of the user.

An alternative embodiment of a rotating cylinder provides for the clamping elements to be arranged in the rotating cylinder in such a way that the pairs of clamping elements are arranged at an angle to one another in a plan view of a development of the cylindrical surface. In contrast to the linear form described above, this creates a selective plucking on the skin of the user. Such a rotary cylinder is known for example from JP H 7-313243. This consists essentially of rod-like clamping elements, which are arranged on the cylindrical outer surface of a roller and are radially slotted. The slot of a clamping element is arranged axially offset from the slot of an adjacent clamping element.

The present invention is based on an epilation device, in particular a rotary cylinder for an epilation device, as is known from US Pat. No. 5,996,021. This discloses a plurality of disk-shaped elements which are provided with arm-like, radially outwardly extending, clamping surfaces having clamping elements. The clamping surfaces of two adjacent disks each form a plurality of pairs of clamping elements. On the respective clamping surface Reverse side of a clamping element, projections for actuating the clamping elements are provided, which are integrally connected to the clamping elements, in particular the disks are produced as a plastic injection-molded part and the projections have at least partially different lengths. When the disk pack rotates, the projections of a pair of clamping elements are guided past pressure cams on the end face, so that in a plucking zone of the device, a pair of clamping elements are moved towards one another by actuation on both sides and brought into clamping contact with one another. The radially outer ends of the clamping elements, which support the clamping surfaces, are bent towards one another and, after leaving the pressure cams, spring back into their original, spaced-apart position. The clamping elements of all the discs forming the rotating cylinder are arranged so that a pair of clamping elements is located in a plucking zone of the epilation device and the clamping elements of a pair, viewed in the circumferential direction of the cylinder, overlap at least partially with the adjacent clamping elements.

In these known devices, it has been shown that the efficiency of the epilation process is often unsatisfactory for the user, i. h that it would be desirable to pluck several hairs per unit of time and that the user can perform the epilation more quickly. Furthermore, it is desirable to achieve further pain reduction during depilation in order to enable the user to perform epilation with less pain more efficiently.

The object of the present invention is therefore to avoid the disadvantages mentioned above and to provide a rotary cylinder for an epilation device or an epilation device itself, which on the one hand is more efficient in hair removal and on the other hand is less painful for the user.

The present invention solves this problem in a rotary cylinder for an epilation device with the features described above in that each pair of clamping elements is assigned a separate, individually movable actuating element. This specifies a rotary cylinder which on the one hand has a plurality of pairs of clamping elements which are arranged essentially offset at an angle to one another and on the other hand enables these clamping elements to be actuated separately. Advantageously thereby an independent control of individual pairs of clamping elements and a defined force transmission for each individual pair of clamping elements. This also achieves a defined clamping of one or more hairs which have come between the clamping elements; the hair or hair is thus grasped safely and plucked more efficiently. Due to the structural physical separation of the actuating element from other components and the separate design, an undesired tilting of the clamping elements from a plane out of the circumferential direction is also avoided. Furthermore, by assigning a single movable actuating element to a pair of clamping elements, one-sided control of the clamping elements is advantageously proposed, that is to say that the one actuating element is assigned to only one clamping element of a pair of clamping elements, the actuation usually taking place from the end of the rotary cylinder .

Furthermore, due to the structural separation of the actuating element from the clamping elements, the actuating element can advantageously be positioned in such a way that an optimal closing operation of the clamping elements, i. H. a parallel closing of the clamping elements of a pair is achieved. An undesired tilting, tilting or a similar movement can thus advantageously be excluded. An even clamping force is generated between a pair of clamping elements, thereby plucking the hair with little pain.

In a further development of the invention it is proposed that the actuating elements between each pair of clamping elements and the corresponding control element are arranged to be displaceable parallel to the axis of rotation of the rotary cylinder. This advantageously enables direct power transmission from the control element via the actuating element to a clamping element and suggests a simple, direct and low-friction arrangement of the actuating element in the rotary cylinder.

In a special embodiment of the invention, two or more pairs of clamping elements are arranged in a line axially offset from one another on the rotary cylinder and thus simultaneously pass through a plucking zone of the epilation device. Thus on the one hand the number of clamping elements in a line on the rotary cylinder is reduced by the essentially angularly offset arrangement of different pairs of clamping elements, so that advantageously by the greater distance between a less painful epilation is achieved with the individual clamping elements. On the other hand, the arrangement of two or more pairs in a line on the rotary cylinder further increases the efficiency of the plucking process, if this is desired or necessary. The control of the two or more pairs of clamping elements in a line is advantageously carried out from the two end faces of the rotary cylinder.

In another development of the invention, a pair of clamping elements consists of a fixed and a movable, in particular a pivotable, clamping element. The movable clamping element is arranged closer to an end outside of the rotary cylinder than the fixed clamping element. As a result, the lowest possible number of moving components is required, as a result of which the lowest possible mass is moved. As a result, a reduction in force for driving the rotary cylinder and also noise reduction are advantageously proposed. Characterized in that the movable clamping element is arranged closer to the outside of the rotating cylinder than the fixed clamping element, the shortest path between the pivotable clamping element and the control element is thus provided, which is usually arranged on the end face of the rotating cylinder.

In a special development, the actuating element can be pressed onto the surface of the movable clamping element facing the control element. This advantageously achieves a short and direct introduction of force between the control element and the one movable clamping element of a pair of clamping elements.

In a further embodiment of the rotary cylinder it is provided that two clamping elements form a clamping plate and that in particular two fixed clamping elements form a one-piece, fixed clamping plate and two movable clamping elements form a one-piece, movable clamping plate. As a result, a further advantageous reduction in the number of components is proposed, since two pairs of clamping elements, i. H. four individual clamping elements are formed by two clamping lamellae.

It is particularly advantageous that the clamping lamellae are designed and arranged such that they penetrate the rotary cylinder diametrically. Thus, two pairs of clamping elements are formed by two pairs of clamping lamellae, which are arranged at diametrically opposite positions of the rotary cylinder.

In a development of the invention, the control element is designed as a control disk, which has a control cam, in particular an inclined plane, and is arranged on the end face of the rotary cylinder in the housing of the epilation device or of the device head. Thus, the movement of the actuating elements can advantageously be influenced by a different design of the control cam, so that, for example, a slow or a sudden actuation of the clamping elements can be set by means of a flat or a steep ramp in the control cam. The ramp of the control curve can have a continuous or also a step-like course.

It is further proposed that a pressure roller is rotatably mounted in the control disc. In the area in which the actuating element runs over the pressure roller, the friction between the actuating element and the control disk or pressure roller is significantly reduced.

In a special embodiment of the rotary cylinder, the pressure roller protrudes slightly from the plane of the control cam, in particular from the inclined plane, in the direction of the actuating element. The pressure roller is advantageously provided at the position of the control cam at which the clamping elements are in their clamping position. Thus, the actuating element can initially be operated continuously via the control curve of the control element, ie. H. towards and away from the clamping element; the clamping elements are now in clamping contact. The pressure roller then advantageously transmits the pressure force for applying the clamping force of the clamping elements, so that a defined, low-friction pressure force can be applied to the clamping element via the actuating element by the rotatable pressure roller.

In an advantageous embodiment, the actuating element is designed as a pin-like pressure element, in particular as a cylindrical pressure pin or control pin. A simple form of the pressure element is thus proposed, which can advantageously be produced inexpensively in large quantities both in metal and in plastic and in which the required tolerance dimensions, in particular length tolerance zen, are easy to follow.

In a further embodiment of the invention, the pressure pin is guided axially displaceably in a bore of the rotary cylinder, the bore running essentially parallel to the axis of rotation of the rotary cylinder. Thus, a simple guidance of the pressure pin is specified, which provides for a direct transmission of the clamping force from the control disk via the pressure pin to the clamping element. The tolerances of the pressure pin diameter and of the bore diameter can advantageously be coordinated with one another in a simple manner. Furthermore, the arrangement of the bore essentially parallel to the axis of rotation of the rotary cylinder suggests simple, cost-effective production of the bore and thus the guidance of the pressure pin.

The bores for all the pressure pins of a rotary cylinder are advantageously arranged on a common pitch circle, so that they are easy to manufacture and can also be distributed symmetrically.

In a further development of the invention, the pressure pins, which are assigned to two corresponding, diametrically arranged pairs of clamping elements, in particular a pair of clamping lamellae, have the same or almost the same length. Thus, the required number of different components can advantageously be further reduced if two pressure pins of the same length are used for a pair of clamping lamellae. However, it is also possible that the clamping plates have an inclined position, in particular a slight inclined position to a plane perpendicular to the axis of rotation of the cylinder, so that the two pressure pins, which are assigned to this pair of clamping plates, require a slightly different length.

In a special development of the rotary cylinder, the pin-like pressure elements are provided with a hammer-head-like thickening at their outer end facing the respective control element. In this way, an enlargement of the front-side contact area of the pressure elements, which point in the direction of the control element or the pressure roller, is proposed in a simple manner. As a result, a flat, soft control cam or a movement of the pressure pin towards the clamping element is proposed, which is advantageously less wear and less noise. In a further embodiment of the rotary cylinder, the pressure pins, in particular the control bolts, are spaced apart from one another so that the end faces of the hammer head-like thickenings of all pressure pins facing the control element form an almost closed circular surface. This advantageously prevents gaps between the individual pressure pins, as seen from the end face of the pressure cylinder, which causes a sudden sudden activation of the pressure pins and thus an abrupt actuation of the clamping elements if the pressure roller would plunge into such spaces. Rather, it is proposed to make the distance between the individual hammer head-like thickenings as small as possible, so that an almost continuous transition from one pressure pin to the following pressure pin on the control element is achieved. The essentially closed circular end face of all control bolts formed by these thickenings thus advantageously runs almost continuously over the control element, in particular the pressure roller in the control element.

In a further embodiment of the invention it is proposed that the movable clamping elements, in particular the clamping plates, which penetrate the rotating cylinder diametrically, have a defined pivot axis. This is advantageous so that a defined movement of the clamping elements and thus precise pinching and plucking of the hair is made possible. The pain reduction of the epilation process is also advantageously influenced thereby.

It is further proposed that the pivot axes of the clamping plates intersect the axis of rotation of the rotating cylinder, which advantageously enables a substantially symmetrical design of the clamping plates and the rotating cylinder.

In a development of the rotating cylinder, the clamping lamellae are designed in the form of strips. An advantageously easy-to-produce form of the clamping plate is thus proposed, which is also particularly suitable for producing large numbers of clamping plates.

In a further embodiment, the clamping lamellae have pivot bearings, which are preferably mirror-symmetrical as two essentially to the longitudinal axis of the clamping lamella. trical bulges or lugs of the long sides of the clamping plate are formed. The pivot bearings are also arranged so that the pivot bearing divides the clamping plate into two clamping elements. The two clamping elements, which each extend outward from the pivot bearing, have slightly different radial lengths. Thus, with a possible inclination of the clamping lamellae in the rotating cylinder, it is advantageously possible to achieve a uniform contact of the movable clamping lamella with a corresponding fixed clamping lamella.

It is further proposed that the clamping elements, in particular the clamping lamellae, are produced as sheet metal stampings. This enables a particularly cost-effective production of the clamping lamella in large quantities.

In a particularly advantageous development of the invention, which can also be an independent invention, the rotary cylinder consists of several disk-like components, in particular of circular cylindrical disks. These are arranged essentially parallel to one another and directly adjacent to one another, without a substantial space or gap being created between two adjacent panes. This modular design of the rotary cylinder - a disk is referred to here as a module - advantageously suggests simple and inexpensive manufacture of the rotary cylinder. Furthermore, there is the possibility of assembling a rotary cylinder from almost any number of such modular disks in order to vary the size, in particular the length, of a rotary cylinder. On the other hand, a variation of the rotary cylinder can also be achieved by a combination of different types of modular disks.

In a development of the rotary cylinder, it is proposed that a disk has at least one recess for receiving a clamping element, in particular a clamping plate. Such a recess for a clamping lamella is advantageously easy to manufacture and variable in size and position with respect to the disk.

In a further development of the disk, it has a groove-like recess on its front and / or its rear side, in particular a groove with a rectangular cross section for receiving a clamping lamella. These grooves run in particular diametrically to the front or back of the circular cylindrical disk. Through this Formation of the disc with a groove on its front and / or rear side creates the possibility of directly lining up several identical discs, whereby a clamping plate on the front side of a first plate forms a pair with another clamping plate on the rear side of a second plate. A simple possibility of duplication for pairs of clamping lamellae is thus advantageously proposed.

In a special embodiment of the groove, it is designed to be inclined to the front and / or to the rear of the disk and thus in particular to accommodate a fixed, ie. H. provided relative to the disc not movable clamping element or a clamping plate. This ensures that the two radially outer ends of the clamping plate are axially offset from one another with respect to the axis of rotation of the rotary cylinder. This can advantageously by a pair of clamping lamellae, d. H. two plucking tracks axially offset from one another are formed by four clamping elements. With these staggered plucking marks, a more thorough and efficient plucking of the hair is suggested due to a greater homogeneity of the plucking events. Thus, with an arrangement of a pair of slats, i.e. H. four clamping elements can already create two plucking tracks in a rotating cylinder. If two pairs of clamping lamellae are arranged in the rotary cylinder, four plucking tracks are produced. The inclined arrangement of the grooves in a disk and thus also the clamping lamellae enables advantageous, intensive plucking.

In another development of the disk, the disk has a groove on its front and rear side, the longitudinal axes of these grooves being arranged rotated relative to one another about the axis of rotation of the disk. The pair of fins on the front of the disc is thus rotated relative to the pair of fins on the back of the disc. Due to this mutually rotated arrangement of the two adjacent pairs of lamellae, the clamping elements pass the plucking zone of the epilation device at a time-shifted distance. A spatial and temporal separation of individual plucking events is thus achieved in a simple manner, which has an advantageous effect on reducing pain.

In an alternative embodiment of the grooves in the disks of a rotary cylinder, these grooves are inclined on both sides to the front and / or the back of a disk, so that the groove depth from the center of the disk to the respective outer circumferential areas of the disc increases. These grooves are provided for receiving the pivotable clamping elements, in particular the pivotable clamping plates. The clamping lamellae can advantageously be pivoted about an area near the center of the disk and thus perform a closing and opening movement of the clamping lamellae of a pair in the outer peripheral areas of the disk.

In a special embodiment of the disc of the rotary cylinder, this has recesses on the front and / or the back for receiving the pivot bearings of a pivotable clamping plate. These recesses are connected in particular to the groove inclined on both sides and are arranged essentially in the center of the disc in such a way that a pivotable clamping lamella can advantageously be simply inserted into these recesses and stored securely. By forming a groove with the recesses for a pivotable clamping plate, this can also be distinguished in a simple manner for the assembly of a rotating cylinder from a groove for receiving a fixed clamping plate.

It is further proposed that each groove of a disk receives a clamping plate, in particular a fixed and a pivotable clamping plate. This identical design of the modular disks advantageously enables simple duplication of the pairs of clamping plates. Depending on the need or requirement, a different number of module-like disks can be arranged side by side in the same direction and thus a rotary cylinder of almost any length can be formed.

In a particularly advantageous development of the rotary cylinder, two different types of disks, in particular middle and outer disks, are provided. A further possible variation of the rotary cylinder with different types of disks is thus advantageously proposed in a simple manner.

Advantageously, a central disc is designed such that it has a groove inclined on one side, as already described above, on its front and rear sides. Such a central disc is therefore advantageously suitable for accommodating two fixed clamping lamellae, which are each inserted into a groove on the front and back. An outer disk, on the other hand, is designed such that it has, for example, a groove inclined on both sides on its front side and a groove inclined on one side on its rear side. As a result, in particular a swiveling clamping plate can be inserted on the front and a fixed clamping plate on the back. Such a module-like outer pane can now be combined with its front, which has a pivotable clamping lamella, with the front or the rear of a middle pane described above. The back of the outer pane, which is provided with a fixed clamping plate, can advantageously be followed by the front of a further outer pane, which is provided with a pivotable clamping plate.

In a special development of the rotary cylinder, a plurality of identical outer disks are arranged on both sides of a central disk. Thus, the modular design of the disks and the special arrangement advantageously suggest simple duplication of the disks and a possibility of variation of the rotary cylinder.

In another development, all outer disks are arranged in the same direction next to one another on one side of a middle disk, in particular the sides of the disks with the grooves inclined on both sides are arranged outwards to the end faces of the cylinder. Therefore, the pivotable clamping lamellae are advantageously also provided outwards to the end faces of the rotary cylinder and can thus be moved in a simple and direct manner from the end face of the expansion cylinder by actuating means.

The disks of the rotary cylinder are particularly advantageous and inexpensive to produce even in large numbers if the middle and outer disks are made of plastic.

In a further embodiment of the invention, which can also be an independent invention, it is provided that at least one threading groove, in particular for guiding the hair of the user to be epilated, is arranged in the lateral surface of the rotary cylinder. This advantageously makes it easy to guide the hair to be epilated to the respective pairs of clamping elements and to thread the hair into it proposed these pairs of clamping elements.

In a special embodiment of the threading groove, it is arranged helically. Thus, all areas of the skin surface to be epilated are swept by a threading groove, so that advantageously all hair is gripped by the threading groove and fed to a pair of clamping elements.

It is further proposed that the threading groove leads from a first pair of clamping elements to a second pair of clamping elements, which passes through the plucking zone after the first pair and is arranged at an angle to the first pair. Thus, one or more hairs which have not been gripped and plucked by the first pair of clamping elements can be guided through the threading groove to a second pair of clamping elements. The efficiency of the rotary cylinder is thus advantageously increased.

In an alternative embodiment, the threading groove has a branch which leads from a first pair of clamping elements to a second or a third pair of clamping elements. The second and third pairs are each arranged axially in different directions and angularly offset from the first pair. Thus, depending on the position and direction of growth, one hair or several hairs which were not grasped by a first pair of clamping elements have the possibility of being fed and plucked to a second or a third pair of clamping elements.

It is further proposed that several threading grooves are arranged in parallel next to one another on the rotary cylinder. This advantageously enables almost any hair on the skin surface to be plucked to get into one of the threading grooves and thus be fed to a pair of clamping elements.

In a further embodiment of the invention, two pairs of clamping elements, which are assigned to a pair of clamping lamellae and are arranged essentially diametrically opposite one another in the rotating cylinder, are assigned to two different, in particular offset, threading grooves. It is thus advantageously possible to move two different threading grooves over this area of the skin at almost one and the same place on the skin to be plucked and thus to grasp the hair to be gripped Feed and pluck a pair of clamping elements.

In a development of the invention, it is proposed that the rotary cylinder have an essentially closed, smooth outer surface. This closed lateral surface advantageously acts as a hold-down for the skin surrounding the clamping elements, the hair to be epilated being fed to the clamping elements through the threading grooves provided in the rotating cylinder.

In a special development of the invention it is proposed that an epilation device can be connected to a rotary cylinder with the features described above and can be operated together. A rotary cylinder according to the invention can thus be placed on an epilation device and used together with it for epilation.

In a special development of an epilation device, it can be operated at different speeds for driving different attachment tools, for example a rotary cylinder with the above features. Since the rotary cylinder according to the invention requires a certain drive speed, this is advantageously also provided by the epilation device. When the rotary cylinder is replaced by another attachment tool which is driven at a different speed, this speed can be set or changed on the epilation device.

Another advantageous embodiment of the epilation device provides that it contains a rotary cylinder with the features described above, i. H. that the rotary cylinder is integrally connected to the epilation device.

It is further proposed that the epilation device contains a rotary cylinder which has at least one end face a control disc with a control cam for driving the actuating elements and a pressure plate with a control curve, in particular an inclined plane for clamping force adjustment of the clamping elements. Thus, a clamping force adjustment of the cylinder according to the invention is advantageously made possible by the user even with simple means. Further features, advantages and possible uses of the invention result from the following description of exemplary embodiments, which are shown in more detail in the drawing. All of the described and / or illustrated features, alone or in any combination, form the subject matter of the invention, regardless of how they are summarized in the claims and their relationship.

Show it:

1 is an epilation device with the essential components in a schematic representation and in section,

2 shows a rotary cylinder according to the invention as an assembly completely assembled with a bow spring in a perspective and enlarged view compared to FIG. 1,

3 shows a rotary cylinder according to FIG. 2 but without the front-side control elements and pressure plates in a perspective and schematic representation,

4 shows a middle pane according to FIG. 2 with the associated clamping elements in a perspective and schematic representation,

5 shows an outer pane according to FIG. 2 with associated clamping elements in a perspective and schematic representation,

6 shows a rotary cylinder similar to the illustration in FIG. 2 in a schematic illustration and in longitudinal section,

7 shows the front end of a rotary cylinder similar to view X in FIG. 2 in a partially broken open and schematic representation,

8 shows an end face of a rotary cylinder similar to the illustration in FIG. 7, but alternatively with a pressure plate,

Fig. 9 shows the development of a lateral surface of a rotary cylinder according to the invention with threading grooves in a schematic representation and Fig. 10 shows the development of a lateral surface with an alternative embodiment of the

Threading grooves.

An epilation device 1 (FIG. 1) essentially consists of a housing 2 and a device head 3 connected thereto. An accumulator 4 and a motor 5 are provided in the housing 2, the motor 5 being connected via a gear 6 to a device 3 in the device head arranged rotary cylinder 7 is connectable. The cylinder 7 in turn essentially consists of a plurality of clamping elements 8 arranged next to one another.

The rotary cylinder 7 (FIG. 2) is formed from a plurality of disks arranged parallel to one another, namely from a middle disk 10 and a plurality of outer disks 11, which are arranged on both sides of the middle disk 10. The clamping elements 8 are arranged in the disks 10, 11. On the end faces of the disk package, one cover disk 1 2, 13 is provided, the left cover disk 1 3 being provided with teeth for driving the rotary cylinder. This disc 13 is connected to a pinion 20, which in turn is driven by a motor, not shown. The disk set 10, 1 1, 1 2, 1 3, which forms the rotary cylinder 7, is arranged on a shaft 9, which is rotatably mounted on both end faces of the rotary cylinder 7 in each case a socket in a device housing. The control elements 14, 1 5 are fixed in place in the housing of an epilation device. In the two control elements 14, 1 5 pressure rollers 16 are rotatably mounted so that they slightly protrude the inner surface of the control elements 14 and 15 facing the rotary cylinder 7. This disk package forming the rotary cylinder 7 with the two outer control elements 14 and 15 is held by a bow spring 19 and compressed so that the clamping function of the individual clamping elements 8 is ensured. In order to adjust the pressure force of the bow spring 19, a pressure plate 17 with an external control cam 18 is arranged on the outside of the control element 14. By turning the pressure plate 17 about the axis of the shaft 9, the distance between the ends of the bow spring and thus the clamping force exerted on the disk package can be adjusted.

The clamping elements 8 (FIG. 3) are arranged in recesses 21, which in turn lie in a groove 60 on the outer surface of the rotary cylinder 7. At the end faces of the disc package, the end plates 1 2 and 1 3 are provided, in which the Push pins 22 are held substantially parallel to the axis of rotation of the rotary cylinder 7. The pressure pins 22 are arranged in bores on a common pitch circle and all protrude in the unloaded state with approximately the same length from the front ends of the end plates 1 2 and 1 3. The other end of the pressure pins 22 is located inside the rotary cylinder 7 and abuts a clamping plate of each pair of clamping plates. All clamping lamellae in the right half of the rotary cylinder 7 are actuated by pressure pins 22 which are guided in the right end plate 12. The clamping elements, which are located in the left half of the rotary cylinder 7, are actuated by pressure pins, which are guided in the left lens 1 3.

A central disk 10 (FIG. 4) has a central bore 23 for receiving a cylinder shaft. A plurality of bores 24, which are provided for guiding the pressure pins, are located concentrically to the bore 23 on a pitch circle. A groove 25 is introduced on the front of the disk 10, which runs obliquely to the surface of the front and has a groove depth 27 at its upper end which is greater than the groove depth at the opposite end of the groove 25. On the opposite rear of the disk 10 a corresponding groove 26 is introduced, which also has an arrangement inclined to the surface of the rear side. A fixed strip-shaped clamping lamella 28 is inserted into the groove 25 and a corresponding clamping lamella 29 is inserted into the opposite groove 26. The lamella 28 is provided with a bore 30 for the passage of the cylinder shaft. The upper and lower ends of the lamella 28 form the clamping surfaces 31 and 32, which interact with a corresponding clamping lamella of an adjacent disk. Immediately next to the bore 23 10 supports 33 are provided in the disc, which protrude from the surface of the front.

An outer disc 11 (FIG. 5) is also provided with a central bore 34 for the passage of the cylinder shaft. The grooves 36 and 37 are introduced on opposite sides of the disk 1 1 and rotated against each other about the axis of rotation of the disk 1 1. The disc 1 1 also has a plurality of bores 35 for guiding the pressure pins, which are aligned with the bores 24 of the adjacent disc 10. The groove 36 has a shape that is inclined on both sides from the center of the disc, so that the groove depths 38 and 39 are larger at the diametrically opposite ends of the groove 36 than in the center of the disc 11. Corresponding recesses 40 are arranged here, which extend essentially at right angles away from the longitudinal sides of the groove 36.

A movable clamping plate 41 is provided with two diametrically opposite clamping surfaces 42 and 43. Approximately in the middle of the clamping plate 41 there is a bore 44 for the passage of the cylinder shaft, while nose-shaped protrusions 45 are provided on the long sides of the clamping plate 41. These lugs 45 are inserted into the recesses 40 of the groove 36 and held in position by the supports 33 of the adjacent disk 10. On the opposite rear of the disc 1 1, a fixed clamping lamella 46 is inserted into the groove 37 arranged at an angle to the surface of the rear of the disc 1 1.

After the installation of the two disks 10 and 11, the clamping surfaces 31 and 32 of the fixed clamping plate 28 are arranged opposite the clamping surfaces 42 and 43 of the clamping plate 41. When the clamping plate 41 pivots about the supports 33, the two clamping surfaces 42 and 43 come into contact with the two clamping surfaces 31 and 32 of the clamping plate 28.

The disks 10 and 11 (FIG. 6) are provided with bores 24 and 35 which penetrate the rotary cylinder in the axial direction and into which the pressure pins 50 to 53 are inserted. These rest with their one end located inside the cylinder on the movable clamping plates 41 and 47. The respective outer end of the pressure pins 50 to 53 bears against the control cams 49 of the control disks 14, which are fixed in position on the two end faces of the rotary cylinder 7 in the housing of the epilation device. The two front control discs 14 are pressed together by a bow spring 19. Upon rotation about the axis of rotation 68 of the cylinder 7, the pressure pins 50, 51 are brought from a lower, unloaded position of the control cam 49 into an upper, axially inner clamping position. The course of the control curve 49 can take place continuously or in stages. As soon as the pressure pins 50 and 52 have reached their upper clamping position, a pressure force is exerted by the control disk 14 via the pressure pins 50 and 52 onto the movable clamping transfer elements 41 and 47. As a result, the pivotable clamping elements 41, 47 are pressed against the fixed clamping elements 46 and 48. The pressure pins 51 and 53 located below give way axially outwards into the recesses of the control cam 49, so that the lower ends of the clamping plates 41 and 47 are unloaded and pivot around the supports outwards in the direction of the end faces of the cylinder 7.

A control element 14 (FIG. 7) is connected by a bow spring 19 to another control element, not shown, on the opposite end face of the printing cylinder. The bow spring 19 presses on the outside of the control disc 14. On the inside, i. H. On the side of the control disk 14 facing the rotary cylinder, a control cam 54, in particular an inclined plane, is provided, which is inclined inwards at the upper edge of the control disk 14 toward the rotary cylinder, not shown. At the upper end of the control disc 14 there is also a recess in which a pressure roller 16 is rotatably mounted. A control pin 55, which is mounted in the rotary cylinder, not shown, runs along the control cam 54 when the cylinder rotates and is thus continuously moved in the direction of the rotary cylinder. Since the pressure roller 16 projects slightly beyond the surface of the control cam 54, the control pin 55 experiences a sudden axial movement in the direction of the rotary cylinder or of the clamping element arranged in the rotary cylinder when it reaches the pressure roller 16. As an alternative to the cylindrical pressure pin shown so far, the control pin 55 can have a hammer head-like thickening 56 at its front end. This enables the control bolt 55 and the clamping elements to move with less wear and noise.

As an alternative to this, a control disk 14 (FIG. 8), as also already shown in FIG. 2, can be provided on its outer end face with a pressure plate 17, which in turn has a control cam 18. One end of the bow spring 19 slides along the control cam 18 by turning the rotary knob 57, so that the distance between the two opposite ends of the bow spring 19 is variable. This enables simple adjustment of the clamping force acting on the clamping elements. In addition to the rotary knob 57 for setting the clamping force, all other components are arranged within a housing wall 58 of the device head. In a development of the outer surface of a rotary cylinder (Fig. 9) the disc numbers are given on the right edge of the picture; Discs S1 to S5 and S6 to S10 are separated from one another by a central disc M. At the bottom of the picture, the circumferential angles from 0 to 360 degrees are given. Two pairs of clamping elements 8 are arranged in a line parallel to the axis of rotation of the rotary cylinder. Viewed in the direction of rotation, the clamping elements 8 are each offset by 36 degrees to one another, the direction of rotation being opposite to the direction of threading the hair. Each of the outer disks Nos. S1, S2, S3 is provided with grooves 59, 60 and 61, which are guided essentially helically over the circumference of the cylinder jacket. The groove 61 begins, for example, at 0 degrees in the pane No. S3 and ends at 288 degrees in the groove 60 of the pane No. S2. This in turn opens after a further 288 degrees, namely at 21 6 degrees, in the groove 59 of the disk No. S1. As a result, all the grooves provided on the lateral surface are in a substantially helical connection with one another. The two clamping elements of disc No. S1, which are located at 0 and 180 degrees, are each arranged in different grooves 59, 60, so that hairs located directly next to one another on a skin surface to be epilated can be guided in two different grooves.

An alternative embodiment of the groove guide is (Fig. 10) that a hair that could not be gripped by the clamping element 62, for example, initially remains in the groove 65; however, this then branches into a groove 66 and a groove 67, so that the hair which has not been detected can subsequently be fed to the pair of clamping elements 63 in the pane No. S2 or the pair of clamping elements 64 in the pane No. S3.

A typical embodiment of a rotary cylinder according to the invention consists of a middle and five outer disks, which are arranged on both sides of the middle disk. Two clamping lamellae are provided in each disc, which penetrate the rotating cylinder diametrically and which each carry a clamping element with a 4 mm clamping width at their two outer ends. In the cylinder, ten pressure pins are inserted twice, which are located on a common pitch circle and have an equidistant division of 36 degrees between two adjacent pressure pins.

Claims

claims

1 . Rotary cylinder for an epilation device with several essentially angularly offset pairs of clamping elements and with actuating elements in order to bring the clamping elements into clamping contact in pairs in the region of a plucking zone and then to separate them again, and with at least one control element for actuating the actuating elements, thereby characterized in that each pair of clamping elements (8) is assigned a separate, individually movable actuating element (22, 55).

2. Rotary cylinder according to claim 1, characterized in that the actuating elements (22, 55) between each pair of clamping elements (8) and the corresponding control element (14, 1 5) are arranged displaceably parallel to the axis of rotation of the rotary cylinder (7).

3. Rotary cylinder according to claim 1 or 2, characterized in that two or more pairs of clamping elements (8) are arranged in a line axially offset from one another on the rotary cylinder (7) and pass through the plucking zone simultaneously.

4. Rotary cylinder according to one of the preceding claims, characterized in that a pair of clamping elements (8) consists of a fixed and a movable, in particular a pivotable clamping element, wherein the movable clamping element is arranged closer to an end outside of the rotary cylinder (7) than the fixed clamping element.

5. Rotary cylinder according to one of the preceding claims, characterized in that the actuating element (22, 55) on the control element (14) facing surface of the movable clamping element (8) can be pressed.

6. Rotary cylinder according to one of the preceding claims, characterized in that two clamping elements (8) form a clamping plate, in particular an integral fixed (28, 29, 46) or movable clamping plate (41).

7. Rotary cylinder according to one of the preceding claims, characterized in that the clamping plates (28, 29, 41, 46) penetrate the rotary cylinder (7) diametrically.

8. Rotary cylinder according to one of the preceding claims, characterized in that the control element (14) is designed as a control disk which has a control cam (54), in particular an inclined plane, and is arranged on the end face of the rotary cylinder (7).

9. Rotary cylinder according to one of the preceding claims, characterized in that in the control disc (14) a pressure roller (1 6) is rotatably mounted.

10. Rotary cylinder according to one of the preceding claims, characterized in that the pressure roller (16) protrudes from the control cam (54), in particular from the inclined plane, in the direction of the actuating element.

1 1. Rotary cylinder according to one of the preceding claims, characterized in that the actuating element is designed as a pin-like pressure element, in particular as a cylindrical pressure pin (22) or control bolt (55).

1 2. Rotary cylinder according to one of the preceding claims, characterized in that the pressure pin (22) is guided axially displaceably in a bore (24, 35) of the rotary cylinder (7), the bore being substantially parallel to the axis of rotation of the rotary cylinder (7) runs.

1 3. Rotary cylinder according to one of the preceding claims, characterized in that the bores (24, 35) for all pressure pins (22) of a rotary cylinder (7) lie on a common pitch circle.

14. Rotary cylinder according to one of the preceding claims, characterized in that the pressure pins (22), which are assigned two corresponding, diametrically arranged pairs of clamping elements (8), in particular a pair of clamping plates (28, 41), the same length or have almost the same length.

1 5. Rotary cylinder according to one of the preceding claims, characterized in that the pressure pins (22) and the control bolts (55) at their outer, the control element (14) facing end, each have a hammer head-like thickening (56).

16. Rotary cylinder according to one of the preceding claims, characterized in that the pressure pins (22), in particular the control bolts (55) are spaced apart from one another so that the end faces of the thickened portions (56) of all the control bolts (55) facing the control element (14) form a substantially closed circular surface.

1 7. Rotary cylinder according to one of the preceding claims, characterized in that the movable gill elements (8), in particular the movable clamping plates (41) have a defined pivot axis.

18. Rotary cylinder according to one of the preceding claims, characterized in that the pivot axes of the clamping plates (41) intersect the axis of rotation of the rotary cylinder (7).

19. Rotary cylinder according to one of the preceding claims, characterized in that the clamping lamella (28, 29, 41, 46) is strip-shaped.

20. Rotary cylinder according to one of the preceding claims, characterized in that the pivotable clamping plate (41) has pivot bearings, which preferably as two substantially symmetrical to the longitudinal axis of the clamping plate (41) mirror-symmetrical bulges or lugs (45) of the longitudinal sides of the clamping plate (41) Are formed and that the pivot bearing halves the clamping plate (41) in two clamping elements, which in particular have slightly different radial lengths.

21. Rotary cylinder according to one of the preceding claims, characterized in that the clamping elements (8), in particular the clamping lamellae (28, 29, 41, 46) are made as stamped sheet metal parts.

22. Rotary cylinder according to one of the preceding claims, characterized in that the rotary cylinder (7) consists of a plurality of disk-like components, in particular circular cylindrical disks (10, 1 1), which are arranged essentially parallel to one another and directly adjacent to one another.

23. Rotary cylinder according to one of the preceding claims, characterized in that a disc (10, 1 1) has at least one recess for receiving a clamping element, in particular a clamping plate (28, 29, 41, 46).

24. Rotary cylinder according to one of the preceding claims, characterized in that a disc (10, 1 1) on its front and / or back a groove-like recess, in particular a groove (25, 26, 36, 37) for receiving a clamping plate (28, 29, 41, 46), the groove running in particular diametrically.

25. Rotary cylinder according to one of the preceding claims, characterized in that the groove (25, 26, 37) inclined to the front and / or back of the disc (10, 1 1) and in particular for receiving a fixed clamping element or a clamping plate (28th , 29, 46) is provided.

26. Rotary cylinder according to one of the preceding claims, characterized in that a disc (10, 1 1) has a groove (25, 26, 36, 37) on its front and rear sides and the longitudinal axes of these grooves (25, 26, 36, 37) are arranged rotated relative to one another about the axis of rotation of the disk (10, 11).

27. Rotary cylinder according to one of the preceding claims, characterized in that a groove (36) is inclined on both sides to the front and / or rear of a disc (1 1), so that the groove depth (38, 39) from the center of the disc to the outer Circumferential areas of the disc (1 1) increases and this groove (36) is provided for receiving the pivotable clamping elements, in particular a pivotable clamping plate (41).

28. Rotary cylinder according to one of the preceding claims, characterized in that the front and / or back of the disc (1 1) recesses (40) for receiving the pivot bearing, for example the lugs (45) of a pivotable Has clamping lamella (41), which in particular is connected to the groove (36) inclined on both sides and is arranged essentially in the center of the disc (11).

29. Rotary cylinder according to one of the preceding claims, characterized in that two corresponding grooves (25, 36) of adjacent disks (10, 1 1) receive a pair of clamping plates, in particular a fixed (28) and a pivotable clamping plate (41).

30. Rotary cylinder according to one of the preceding claims, characterized in that two different types of disks, in particular middle (10) and outer disks (1 1) are provided.

31 Rotary cylinder according to one of the preceding claims, characterized in that a central disc (10) has a groove (25, 26) inclined on one side on its front and rear.

32. Rotary cylinder according to one of the preceding claims, characterized in that an outer disc (1 1) on its front side has an inclined on both sides (36) and on its back a one-sided inclined groove (37).

33. Rotary cylinder according to one of the preceding claims, characterized in that a plurality of similar outer disks (1 1) connects to both sides of a central disk (10).

34. Rotary cylinder according to one of the preceding claims, characterized in that on each side of the central disc (10) all outer discs (1 1) are arranged side by side in the same direction, in particular the sides of the discs (1 1) with the grooves inclined on both sides ( 36) to the outside towards the front of the rotary cylinder (7).

35. Rotary cylinder according to one of the preceding claims, characterized in that the disks, in particular the middle (10) and the outer disks (1 1) are formed from plastic.

36. Rotary cylinder according to one of the preceding claims, characterized in that in the outer surface of the rotary cylinder (7) at least one threading groove (59, 60, 61, 65, 66, 67), in particular for guiding the hair to be epilated, is provided.

37. Rotary cylinder according to one of the preceding claims, characterized in that the threading groove (59, 60, 61, 65, 66, 67) is arranged helically, in particular with a slight pitch.

38. Rotary cylinder according to one of the preceding claims, characterized in that the threading groove (59, 60, 61) leads from a first pair of clamping elements (8) to a second pair of clamping elements (8) which passes through the plucking zone after the first pair and is angular is offset from the first pair.

39. Rotary cylinder according to one of the preceding claims, characterized in that the threading groove (65, 66, 67) has a branch which leads from a first pair of clamping elements (62) to a second or a third pair of clamping elements (63, 64), wherein the second and third pairs (63, 64) are each arranged axially in different directions and angularly offset from the first pair (62).

40. Rotary cylinder according to one of the preceding claims, characterized in that a plurality of threading grooves (59, 60, 61, 65, 66, 67) are arranged parallel to one another.

41. Rotary cylinder according to one of the preceding claims, characterized in that two pairs of clamping elements (8) which are assigned to a pair of clamping lamellae and are arranged essentially diametrically opposite one another, two different, in particular offset, threading grooves (59, 60, 61, 65, 66 , 67) are assigned.

42. Rotary cylinder according to one of the preceding claims, characterized in that it has an essentially closed, smooth outer surface.

43. epilation device, characterized in that it can be connected and operated with a rotary cylinder (7) according to one of the preceding claims.

44. Epilation device according to claim 43, characterized in that it can be operated at different speeds for driving different attachment tools, for example a rotary cylinder (7) according to one of the preceding claims.

45. epilation device, characterized in that it contains a rotary cylinder (7) according to one of the preceding claims.

46. Epilation device according to one of claims 43 to 45, characterized in that the rotary cylinder (7) on at least one end face a control disc (14) with a control cam (54) and a pressure plate (17) for receiving a compression spring (19), with a control curve (18), in particular an inclined plane for adjusting the clamping force.