EP1003630A1 - Electric shaver - Google Patents
Electric shaverInfo
- Publication number
- EP1003630A1 EP1003630A1 EP98946273A EP98946273A EP1003630A1 EP 1003630 A1 EP1003630 A1 EP 1003630A1 EP 98946273 A EP98946273 A EP 98946273A EP 98946273 A EP98946273 A EP 98946273A EP 1003630 A1 EP1003630 A1 EP 1003630A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric drive
- shaving apparatus
- dry
- oscillating
- dry shaving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/048—Complete cutting head being movable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
- B26B19/288—Balance by opposing oscillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
Definitions
- the invention relates to a dry shaver, the type specified in the preamble of the main claim.
- a dry shaver of the type mentioned is known from US 2,339,677.
- the shaving head which is formed from a shaving head frame, as well as an upper knife and lower knife, is arranged on an upper housing surface of a housing such that it can be moved back and forth transversely to the direction of movement of a lower knife driven in an oscillating manner in the longitudinal direction.
- a double eccentric is provided on the rotary shaft of an electric motor fixedly arranged in the housing for transmitting the drive movement to the lower knife on the one hand and to the shaving head on the other hand.
- the masses of shaving head, bedknife and double eccentric which can be moved back and forth by drive elements in different directions, cause excessively strong vibrations, which are noticeable to the user in terms of volume and handling.
- a dry shaver of the type mentioned is also known from DE-GM 1 71 1 665.
- the drive element of the electric drive is also via gear elements, such as. B. gear transmission, or a double eccentric or a double-armed lever, both with the lower knife and with the shaving head equipped with an upper knife to set the lower knife and in addition the complete shaving head in motion.
- gear elements such as. B. gear transmission, or a double eccentric or a double-armed lever
- flywheel weights assigned to the electric drive inevitably require an increase in the power output of the electric drive, which is directly due to an increase in the price of the electric drive and, in addition, in the case of a dry shaving apparatus equipped with rechargeable storage cells, through a higher consumption of storage power and consequently a lower number of shaves per charge that makes memory cells noticeable.
- the invention has for its object to improve a dry shaver of the type mentioned.
- this object is achieved in a dry shaver of the type mentioned by the features specified in the main claim.
- This measure according to the invention is characterized by a large number of advantages.
- the electric drive When the electric drive is started up, the electric drive, from the masses set in motion by the drive element and also from the friction taking place between the existing cutting elements, experiences an oscillating excitation at least in each case counter to the direction of movement of one or possibly several cutting elements.
- This oscillating excitation which is transferred from the electric drive to the razor housing in the previously standard rigid attachment of an electric drive to the razor housing and consequently leads to unpleasant vibration and a loud noise there, is caused according to the invention by the oscillatable mounting of the electric drive , not transferred to the housing, but initially remains with the electric drive and causes it to swing about at least one axis.
- the electric drive thus follows the forced oscillating movements without any significant effect on the housing of the dry shaving apparatus.
- the threaded hair is carried along by the cutting element designed as a lower knife, the cut being made against the edge of the hair entry opening in the cutting element designed as an upper knife.
- the upper knife moves towards the lower knife and thus shortens the hair displacement path of a hair that has penetrated through the hair entry opening during the cutting process, as a result of which the hair is cut shorter.
- the cutting performance of the dry shaver is thus significantly improved. Due to the high vibration frequency of the shaving head, a lower sliding friction of the cutting element on the skin is also effective.
- a major advantage of the invention is that the oscillating excitation emanating from the movable masses is not - as is known - on the housing of the dry shaving apparatus - see DE-GM 1 71 1 665 - but via the oscillatable mounting of the electric drive on the movable shaving head is transferred.
- the energy of the oscillating excitation is thus diverted from a location in the housing where disruptive effects occur to a location where this energy can be used advantageously.
- the electric drive is not required to have any drive power for this shaving head.
- At least the shaving head and the electric drive are mounted as an oscillating mass so as to be oscillatable about at least one common oscillation axis.
- the oscillating mass is obtained by including Vibrating mass of the electric drive and all components that can be set into vibration by the vibrating movements of the electric drive, such as, for. B. shaving head, support arms, bearing cage, gimbal, swing frame, support frame, spring element and swing bridge for a cutting unit and / or by attaching additional vibration masses is formed.
- the electric drive with the components that can be set in vibration is mounted so as to be capable of swinging about a first oscillation axis running transversely to the directions of movement of the drivable cutting element.
- a further advantageous embodiment of the invention is characterized in that the electric drive with the components which can be set in vibration is mounted so as to be capable of swinging about a second oscillation axis which runs parallel to the directions of movement of the drivable cutting element.
- the shaving head and the electric drive are mounted so that they can oscillate about the first oscillation axis and about the second oscillation axis by means of a cardanic suspension in the housing.
- the arrangement of a second oscillating axis crossing the first oscillating axis at right angles from the cardanic suspension of the electric drive and the shaving head in the housing of the dry shaving apparatus enables the reaction forces arising from dynamic processes to keep the first and second oscillating axes away from the housing and also for oscillating movements of the shaving head to be used both in the directions of movement A and B and in the directions of movement C and D.
- the oscillating element can be coupled to the oscillating support frame via the bearing cage or a housing part.
- a driver device is provided for coupling the bearing cage or the housing part to the support frame.
- the electric drive is mounted so that it can oscillate about an oscillation axis.
- a preferred embodiment of the invention is characterized in that the shaving head is mounted so that it can vibrate in the housing by means of at least one oscillating element.
- the oscillating element is formed by support arms having joints.
- the oscillating element is formed by a housing part.
- the oscillating element is formed by an oscillating gimbal frame, a bearing cage oscillatingly mounted in the gimbal, an oscillating frame and by support arms.
- a significant improvement in the cutting performance of the cutting elements and a significant reduction in the vibration of the housing of the dry shaving apparatus can be achieved in that the oscillation axis is provided running through the center of the impact of the oscillating mass.
- the center of impact of the vibrating mass is the place around which the motor would swing if a drive unit running at nominal speed - electrical drive and driven elements - could oscillate freely.
- the bearing forces to be applied for the vibrating mass, here for the drive unit reach their minimum, as a result of which the undesired housing vibration is reduced to a minimum.
- the vibration axis is provided at a distance from the center of the vibration mass.
- the shaving head can be driven in the directions of movement A and B of the drivable cutting element by the oscillating movements of the electric drive.
- this embodiment it is provided that the shaving head is driven by the electric drive in a manner capable of oscillating in the opposite direction to the reciprocating movements of the cutting element. This measure leads to better cutting performance by shortening the hair displacement path in the hair entry openings of the upper knife.
- the shaving head can be driven transversely to the directions of movement A and B of the drivable cutting element in the directions of movement C and by the oscillating movements of the electric drive.
- An improvement in the cutting performance of the cutting elements is achieved according to the invention in that different vibration amplitudes are provided for the shaving head and the movable cutting element.
- This measure ensures, for example, an optimal design and adaptation of movable cutting elements compared to fixed cutting elements, taking into account the diverse geometries of hair entry openings in cutting elements which become effective as the upper knife.
- a significant advantage according to the invention is also achieved in that the vibration amplitudes of the shaving head and / or cutting element can be changed.
- the respective vibration amplitudes can be changed, for example, by changing masses that can be set in vibration or by displacing the vibration axis away from the center of the vibration mass.
- the oscillation amplitude can be determined by the cutting element and the oscillation amplitude of the shaving head can be matched to this. This measure ensures optimal coordination of interacting cutting elements.
- Test trials of a dry shaving apparatus according to the invention have shown that the oscillation path of the shaving head in the directions of movement A and B and in the directions of movement C and D is to be provided in a range from 0.05 mm to 1 mm.
- the vibration path of the shaving head is to be provided in a range from 0.15 mm to 0.5 mm.
- An optimal size of the swing path of the shaving head for a dry shaver type is in each case To be determined on a case-by-case basis, taking into account the respective formation of interacting cutting elements, in particular the geometries of the hair opening.
- the electric drive is mounted so that it can swing about the pivot axis by means of pivot bearings.
- the electric drive is largely decoupled from the inevitable vibration on the housing and at the same time ensures the use of this vibration energy for an advantageous oscillating movement of the shaving head.
- the electric drive is mounted so that it can vibrate in the housing of the dry shaving apparatus in such a way that it follows the imposed vibration without any significant effect on the housing.
- a technically simple and inexpensive to produce embodiment of the invention is characterized in that the pivot bearing is provided on at least one support element of the housing and on a housing part of the electric drive.
- the housing part of the electric drive can be fastened in a bearing cage.
- the pivot bearing is provided on a bearing cage of the electric drive and on the gimbal and the pivot bearing on the gimbal and a support element of the housing.
- the pivot bearing for the electric drive is designed as a cone bearing.
- At least one support arm is provided for the shaving head.
- at least two joints are provided on the support arm.
- the support arm is designed as a spring element.
- An inexpensive embodiment of a spring element is characterized in that the spring element is formed by a leaf spring.
- At least one support arm can be coupled to the electric drive via an oscillating element having joints.
- These joints can be formed, for example, by articulated bolts slidably mounted in bores - not shown.
- at least one joint is designed as a film hinge joint.
- the support arm is coupled to the shaving head frame of the shaving head in the directions of movement A and B via a joint with at least one support element and via a joint.
- This embodiment corresponds to a so-called four-bar system.
- the joint for the support arm is provided in the housing at the end of the housing opposite the shaving head. This embodiment uses the available length of the housing of the dry shaving apparatus for the length of the support arm, whereby the vertical component that can be derived from the oscillating movement is reduced in size to a minimum, so that an almost linear oscillating movement in the directions of movement A and B of the shaving head is achieved becomes.
- the support arm is coupled on the one hand with at least one support element and on the other hand with a support frame carrying the shaving head so as to be capable of swinging.
- the support frame can be coupled directly to the electric drive, specifically via a housing part of the electric drive or via a bearing cage surrounding it.
- the electric drive can be coupled to the support frame via a housing part and a driver device.
- the driver device is formed from a slot and a pin which can be engaged in this slot.
- the driver device is formed from a ball joint.
- the ball joint which is provided at a distance from the first and second oscillation axes in the support frame and bearing cage, ensures the transmission of the rotations occurring in the electric drive into the oscillation axes on the support frame and consequently on the shaving head.
- the drive element of the electric drive can be coupled to a cutting element of the shaving head via a swing bridge. According to a further embodiment of the invention, it is provided that the drive element of the electric drive can be coupled to a cutting element of the shaving head via at least one eccentric. Another embodiment of the invention is characterized in that the drive element of the electric drive can be coupled to differently designed cutting elements via an eccentric designed as a double eccentric. Among differently designed cutting elements are the cutting elements of a short hair cutting system - see FIG. 1 - and also to understand the cutting elements of a long hair cutting device.
- the long hair cutting device can be provided in a known manner on or in the housing of the dry shaving apparatus or in a shaving head (not shown).
- the eccentric of a double eccentric can be coupled to a cutting element of a long-hair cutting device via a swing bridge.
- the electric drive is designed as a direct current motor with a rotatably provided drive element.
- An alternative embodiment to this is characterized in that the electric drive is designed as an oscillating armature motor with an oscillatable drive element.
- the electric drive and the shaving head are held in a central position by means of a spring element is.
- the spring elements are supported on the one hand on the electric drive and on the other hand on the housing.
- FIG. 1 shows a longitudinal section through the upper part of a housing of a dry shaving apparatus with an electric drive which is oscillatably mounted therein, as well as a shaving head which can be set into vibration by means of support arms,
- FIG. 2 shows a side view of the shaving head according to FIG. 1 with a longitudinal section through the housing
- FIG. 3 shows a longitudinal section through the housing of a dry shaving apparatus and a partial section through the shaving head which can be set in vibration with an oscillating drive of the shaving head through a housing part of the electric drive,
- FIG. 4 shows a side view of the dry shaving apparatus according to FIG. 3 with a shaving head having two shaving heads, with a longitudinal section through the housing, and with a support arm pivotably mounted in the housing and on the shaving head,
- FIG. 5 shows the upper part of a housing in section, an electrical drive which is mounted so that it can vibrate, and which is coupled to the shaving head which is mounted to vibrate and in which two swing bridges are provided,
- Fig. 6 shows the upper part of the housing of a dry shaver in section with an oscillatingly mounted electric drive, a double eccentric for operating two oscillating bridges and a shaving head which is oscillating in the directions of movement A and B and which is additionally pivoted about the pivot axis Z.
- 7 shows a section through part of the housing and the shaving head of a dry shaving apparatus with a cardanic suspension of the electric drive,
- FIG. 8 shows a section through the housing of a dry shaving apparatus and through the components of the cardanic suspension of the electric drive
- Fig. 9 is a side view of a shaving head and a section through part of the housing.
- FIG. 1 shows a dry shaving apparatus with a housing 1 in which an electric drive 2 with a drive element 3 for transmitting a drive movement to at least one cutting element 4 which can be moved back and forth in the movement directions A and B is provided, and with a movably mounted shaving head 6 , which is formed by a shaving head frame 7, in which two cooperating cutting elements 4 and 5 are provided.
- two support elements 1 6 and 17 are provided - see Fig. 2 -, on which the electric drive 2 is pivotally mounted by means of pivot bearings 1 2 and 1 3 about a first oscillation axis 8 transverse to the directions of movement A and B of the cutting element 4 .
- the pivot bearings 1 2 and 13 are designed as cone bearings.
- a swing bridge 25 provided with a coupling element 30 for coupling to the cutting element 4, the required pressure of the cutting element 4 on the cutting element 5 being ensured by at least one spring element 32 arranged between the swing bridge 25 and the cutting element 4.
- An eccentric 27 is used to transmit the drive movement from the drive element 3 to the swing bridge 25, which is attached on the one hand to the drive element 3 and on the other hand engages with a pin 26 in a dovetail-like slot 26 provided on the swing bridge 25.
- two support arms 14 and 1 5 are pivotally mounted by means of joints 21 and 22.
- the ends opposite the joints 21 and 22 the support arms 14 and 15 are coupled by means of joints 23 and 24 to the end walls 33 and 34 of the shaving head frame 7 in such a way that a reciprocating oscillating movement of the shaving head 6 in the directions of movement A and B of the cutting element 4 is ensured.
- the oscillating movement which can be removed from the electric drive 2 is transmitted to the shaving head 6 by means of an oscillating element 11, which is coupled on the one hand via a joint 21 to the support arm 15 and on the other hand via a joint 28 to a housing part 20 of the electric drive 2.
- two spring elements 9 and 10 which are supported on the housing 1 and act on the electric drive 2 are provided, by means of which the electric drive 2 is held in a central position in the switched-off state.
- the first oscillation axis 8 according to FIGS. 1 to 9 and the second oscillation axis 1 8 according to FIGS. 7 to 9 run through the center of the impact of all oscillation masses which can be set into vibration when the electric drive 2 is started up, taking into account their moments of inertia.
- These oscillating masses and their moments of inertia vary in size from dry shaving apparatus to dry shaving apparatus, so that the position of the center of impact and thus the position of the oscillating axis 8 and also the second oscillating axis 18 for the respective dry shaving apparatus type can be determined using the physical calculation methods familiar to the person skilled in the art.
- Fig. 2 shows a longitudinal section through the housing 1 of the dry shaving apparatus according to Fig. 1 such that the joints 21 and 23 provided on the support arm 15 are shown visibly.
- the joints 21 and 23 have parallel to the respective Axial directions of the pivot bearings provided bearing bolts and bearing bores, which are provided in the support elements 1 6 and 1 7 and on the end walls 33, 34 of the shaving head 6.
- On the support elements 1 6 and 1 7 a vertical wall is provided for the pivotable coupling of the electric drive 2 by means of the pivot bearing 1 2 and 1 3 designed as a conical bearing.
- the rotational movement of the drive element 3 of the electric motor is converted into an oscillating movement of the swing bridge 25 via the eccentric 27 and the slot 26 provided in the swing bridge 25, these then moving in the directions of movement A and B.
- - And forth movement of the swing bridge 25 is transmitted via the coupling element 30 to the cutting element 4 acting as a bottom knife.
- the cutting element 4 slides along the cutting element 5 designed as a shaving foil in order to cut off the hair penetrating through holes and / or slits in the shaving foil.
- the electric drive 2 experiences an oscillating excitation against the direction of movement of the cutting element 4 sliding along the cutting element 5.
- the electric drive follows the forced oscillation about the oscillation axis 8, due to the size and inertia of the masses that can be set in vibration - the extent of the vibration amplitude is less than the extent of the respective vibration amplitude of the reciprocating cutting element 4.
- the vibration amplitude of the electric drive 2 is applied to the support arm 15 via the vibrating element 11 and transferred from this to the shaving head 6 and thus sets the shaving head 6 with all the components provided therein in a reciprocating oscillating movement in the directions of movement A and B.
- the shaving head 6 thus moves in opposite directions to the cutting element 4 moving at the same time.
- the stroke of the oscillating shaving head 6 is considerably less than the stroke of the cutting element 4.
- FIG. 3 shows a section through the housing 1 of a dry shaving apparatus with an electric drive 2, the drive element of which is mounted on support elements 1 6, 1 7 by means of pivot bearings 1 2, 1 3 - see FIG. 4 - so as to be oscillatable about a first oscillation axis 8 3 is coupled via an eccentric 27 to an oscillating bridge 25 provided in the shaving head 6 for transmitting a reciprocating drive movement to a cutting element 4 which acts as a bottom knife.
- the shaving head 6, which can be moved back and forth in the directions of movement A and B, is part of a four-bar system, the articulated lever of which is designed as support arms 14, 15 at the end of the housing 1 opposite the shaving head 6 by means of joints 21, 22 on support elements 46, 47 provided in the housing 1 is pivotally mounted.
- the support arms 14, 15 which are pivotably mounted in the joints 21, 22 are passed through openings 48, 49 which are provided in the support elements 16, 17 and can be pivoted by means of joints 23, 24 with the end walls 33, 34 of the shaving head 6 coupled.
- the electric drive 2 has two housing parts 20, 37.
- a pin 43 is provided on the housing part 20, which slidably engages in a slot 42 provided on the shaving head frame 7 in order to transmit the oscillating movement of the electric drive 2 to the shaving head 6 via this driver device 41. Due to the very large total length of the support arms 14 and 1 5, the length of the articulated connection to the shaving head frame 7 of the shaving head 6 on the one hand, and the support elements 46, 47 provided on the bottom of the housing 1 on the other hand, the vertical portion is determined by the Joints 21, 22 radially exerted vibration amplitude relatively low, so that one can assume an almost linear movement of the shaving head 6 in the directions of movement A and B.
- Fig. 4 shows a side view of the dry shaver according to Fig. 3 with a longitudinal section through the housing 1, such that the joints 21, 23 provided on the support arm 15 are shown.
- the joints 21, 23 have bearing bolts and bearing bores - not shown - parallel to the respective axial directions of the pivot bearings provided, which are formed on a bottom wall of the housing 1 and are provided on the end walls 33, 34 of the shaving head 6.
- the shaving head 6 carried by the support arms 14, 15 - see FIG.
- the design of the shaving head 6 is not limited to the arrangement of one or two cutting elements 4, 5 within its shaving head frame 7.
- Several cutting systems can be provided in the shaving head frame 7 of the shaving head 6 and these cutting elements can be designed differently to suit a specific cutting function.
- two shaving head systems and one cutting system acting as a long hair cutting system between them can be provided in the oscillatingly mounted shaving head 6.
- FIG. 5 shows a sectional view of the housing 1 with an opening 52 in the housing wall of the housing 1 opposite the shaving head frame 7.
- the electric drive 2 is fastened to the shaving head frame 7 and by means of at least one housing part 20, which is oriented away from the shaving head frame 7 in the direction of the support elements 1 6, 1 7 provided in the housing 1 - see FIG. 4 - on the support elements 1 6, 17 are mounted so as to be oscillatable about the oscillation axis 8.
- spring elements 9, 10 which rest on the housing part 37 of the electric drive 2 and, on the other hand, on the inner wall parts of the housing 1, the electric drive 2 is in a central position in the switched-off state.
- a shaving head frame 55 which is pivotably mounted about a pivot axis Z is provided, in which at least one cutting system formed from cutting elements 4, 5 and a swing bridge 25 for transmitting a drive movement originating from a drive element 3 to the movable cutting element 4 is arranged.
- a further swing bridge 50 is shown with broken lines, by means of which a further cutting system, which is suitable, for example, for trimming contours, is provided.
- FIG. 6 shows the housing 1 of a dry shaving apparatus with support elements 16, 17, on which the electric drive 2, which is fixedly arranged in a bearing cage 35, is pivotably mounted about a first oscillation axis 8 by means of pivot bearings.
- the embodiment according to FIG. 6 shows the electric drive 2 in an oscillating position which can be reached during operation, in which the shaving head 6 which can be moved back and forth in the direction of movement B has reached a reversing position in the direction of movement A.
- the shaving head 6 is supported on the support elements 16, 17 in the directions of movement A and B by means of a support frame 40 and by means of joints 21, 22, 23, 24 having support arms 14, 15.
- the support frame 40 is U-shaped and is coupled via a driver device 41 to a housing part 20 of the bearing cage 35 for transmitting the oscillating movement of the electric drive 2 about the first oscillation axis 8.
- the driver device 41 consists of a pin 43 engaging in a slot 42, the slot 42 being formed in the bottom part of the U-shaped support frame 40 and the pin 43 being provided on the housing part 20 of the bearing cage 35.
- the electric drive 2 consists of an electric motor with a drive element 3 designed as a rotating shaft, to which an eccentric 27 designed as a double eccentric 44 is attached in order to transmit the drive movement from the drive element 3 to an oscillating bridge 25 provided in the shaving head frame 7 of the shaving head 6.
- a dovetail-shaped slot is provided, into which the pin of the eccentric 27 designed as a double eccentric 44 engages.
- the dovetail-like design of the slot ensures wear-free transmission of the drive movement from the drive element 3 to the swing bridge 25 as a result of the adaptation of the angles of the dovetail design to the swing positions of the electric drive 2 during operation.
- the U-shaped support frame 40 ensures an optimal swinging movement of the shaving head 6 in the directions of movement A and B and, moreover, a pivoting movement of the shaving head frame 7 with one or more cutting systems formed from cutting elements 4, 5 about the pivot axis Z by means of cone-shaped joints.
- a swing bridge 50 which is shown by broken lines, is attached. This swing bridge 50 can be used to operate a long hair cutting system, which can be provided on an outside of the housing 1 or an operating switch - not shown.
- the oscillating bridge 50 like the oscillating bridge 25 in the shaving head 6, can be used to attach an oscillating mass - not shown - for the purpose of changing the respective oscillating masses and thus changing the amplitude.
- FIG. 7, 8 and 9 show a further embodiment of a dry shaving apparatus with a shaving head 6 which can be moved back and forth in the directions of movement A and B and in further directions of movement C and D.
- FIG. 7 shows a section through part of the dry shaving apparatus TR for making components of an oscillating movement in the directions of movement A and B as well as C and D ensuring the oscillating system.
- the shaving head 6 is attached to a swingable arranged support frame 40.
- the support frame 40 is coupled to a swing frame 80 by means of support arms 14 and 15 running parallel to one another, the support arms 1 4 and 15 being fastened to the support frame 40 and to the swing frame 80 with the inclusion of retaining plates 65.
- the support arms 14 and 15 are designed, for example, as a leaf spring to ensure vibrations of the support frame 40 and the shaving head 6 in the directions of movement A and B.
- On the swing frame 80 65 support arms 70 and 71 are attached opposite and parallel to each other by means of retaining plates.
- the support arms 70 and 71 - see FIG. 9 - are fastened in the housing 1 of the dry shaving apparatus TR.
- the support arms 70 and 71 are designed, for example, as a leaf spring.
- On the inside of the housing support elements 1 6 and 1 7 are provided, which are coupled to a gimbal frame 60 via pivot bearings 63 and 64.
- the gimbal frame 60 is pivotally coupled to the bearing cage 35 via pivot bearings 1 2, 13 - see FIG. 8, an annular spring element 61 coupling the bearing cage 35 to the gimbal frame 60 without play via the pivot bearings 12 and 1 3 by means of a spring preload.
- the motor shaft 3 of the electric drive 2 is coupled in terms of drive via an eccentric 27 and a swing bridge 25 to the lower knife 4 of the shaving head 6, as is the case, for example, with the embodiments according to FIGS. 1 and 6 is shown and described.
- Fig. 8 shows a section through the housing 1 of the dry shaver TR and through the support elements 1 6 and 1 7, the pivot bearings 1 2 and 1 3, the pivot bearings 63 and 64, and through the swing frame 80, the gimbal 60, the bearing cage 35th , the spring element 61 and by the electric drive 2.
- the electric drive 2 is mounted in the housing 1 so that it can pivot about two intersecting first and second swing axes 8 and 1 8 so that there is a gimbal.
- the electric drive 2 is firmly connected to the bearing cage 35.
- a first oscillation axis 8 is formed by two pivot bearings 12, 13 arranged opposite one another, for example with conical pins on the gimbal 60 and conical bearing bores in the bearing cage 35.
- This mounting can be done by an axially acting spring preload of a spring element 61, e.g. are designed to be permanently free of play by a radially acting ring spring.
- a second oscillation axis 18 - provided orthogonal to the first oscillation axis 8 - is formed by two pivot bearings 63, 64 arranged opposite one another, the conical bearing journals, which are provided, for example, on the support elements 1 6 and 17 of the housing 1, in conical bearing bores in the gimbal Immerse 60.
- the first oscillation axis 8 and the second oscillation axis 1 8 crossing the first oscillation axis 8 at right angles lie in one plane. In a departure from this, the first oscillation axis 8 and the second oscillation axis 1 8 can also be provided in different planes.
- the shaving head 6 of the dry shaver TR is coupled to the housing 1 so that the shaving head 6 can move in one plane relative to the housing 1 in the directions of movement A and B and in the directions of movement C and D without the The distance between the housing 1 and the shaving head 6 measured perpendicular to this plane changes noticeably.
- this linear guidance of the shaving head 6 is achieved by a crosswise arrangement of two four-link chains.
- a first four-link chain - see FIG. 9 - is formed by the support arms 70, 71 arranged parallel to one another and acting in parallel, which, for example, consist of spring steel, and the swing frame 80.
- the support arms 70 and 71 are fixedly connected at one end to the housing 1, for example by ultrasonic welding and at the other end, for example welded to the swing frame 80 by means of associated holding plates 65.
- the swing frame 80 can swing back and forth relative to the housing 1 in the directions of movement C and D.
- the second four-link chain is formed by support arms 14 and 15, which are arranged in parallel to one another and act in parallel as swing arms and which consist, for example, of spring steel, and by the support frame 40 which acts as a coupling rod.
- the support arms 14 and 15 are each attached at the end by welding to the swing frame 80 and the support frame 40 by means of a retaining plate 65.
- This second four-link chain enables a reciprocating oscillating movement of the shaving head 6 in the directions of movement A and B.
- a kinematic coupling of the electric drive 2 with the shaving head 6 takes place via the driver device 41 designed as a ball joint.
- a ball is provided on the support frame 40 and a ball socket on the bearing cage 35.
- This ball joint which is at a distance from the first oscillation axis 8 and the second oscillation axis 1 8, causes the rotations in the electric drive 2 about the first oscillation axis 8 and the second oscillation axis 1 8 to be on the support frame 40 and thus on the shaving head 6 as Transfer translations, whereby this support frame 40 with the shaving head 6 can perform swinging movements in the directions of movement A and B as well as C and D.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Glass Compositions (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19736776A DE19736776C2 (en) | 1997-08-23 | 1997-08-23 | Dry shaver |
DE19736776 | 1997-08-23 | ||
PCT/EP1998/004839 WO1999010142A1 (en) | 1997-08-23 | 1998-08-04 | Electric shaver |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1003630A1 true EP1003630A1 (en) | 2000-05-31 |
EP1003630B1 EP1003630B1 (en) | 2002-03-20 |
Family
ID=7839981
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98929265A Withdrawn EP1005405A1 (en) | 1997-08-23 | 1998-04-25 | Electric razor |
EP98924216A Expired - Lifetime EP1005404B1 (en) | 1997-08-23 | 1998-04-25 | Electric razor |
EP98946273A Expired - Lifetime EP1003630B1 (en) | 1997-08-23 | 1998-08-04 | Electric shaver |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98929265A Withdrawn EP1005405A1 (en) | 1997-08-23 | 1998-04-25 | Electric razor |
EP98924216A Expired - Lifetime EP1005404B1 (en) | 1997-08-23 | 1998-04-25 | Electric razor |
Country Status (12)
Country | Link |
---|---|
US (3) | US6357117B1 (en) |
EP (3) | EP1005405A1 (en) |
JP (3) | JP4328013B2 (en) |
CN (3) | CN1098145C (en) |
AT (2) | ATE213688T1 (en) |
AU (3) | AU7909598A (en) |
DE (3) | DE19736776C2 (en) |
ES (1) | ES2175779T3 (en) |
HK (2) | HK1027996A1 (en) |
PT (1) | PT1003630E (en) |
RU (2) | RU2170660C1 (en) |
WO (3) | WO1999010140A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US7748123B2 (en) | 2006-08-31 | 2010-07-06 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
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-
1997
- 1997-08-23 DE DE19736776A patent/DE19736776C2/en not_active Expired - Fee Related
-
1998
- 1998-04-25 EP EP98929265A patent/EP1005405A1/en not_active Withdrawn
- 1998-04-25 JP JP2000507505A patent/JP4328013B2/en not_active Expired - Fee Related
- 1998-04-25 AU AU79095/98A patent/AU7909598A/en not_active Abandoned
- 1998-04-25 RU RU2000107115/12A patent/RU2170660C1/en not_active IP Right Cessation
- 1998-04-25 AU AU76494/98A patent/AU7649498A/en not_active Abandoned
- 1998-04-25 AT AT98924216T patent/ATE213688T1/en not_active IP Right Cessation
- 1998-04-25 CN CN98808345A patent/CN1098145C/en not_active Expired - Lifetime
- 1998-04-25 WO PCT/EP1998/002470 patent/WO1999010140A1/en active IP Right Grant
- 1998-04-25 EP EP98924216A patent/EP1005404B1/en not_active Expired - Lifetime
- 1998-04-25 US US09/485,287 patent/US6357117B1/en not_active Expired - Fee Related
- 1998-04-25 WO PCT/EP1998/002471 patent/WO1999010141A1/en not_active Application Discontinuation
- 1998-04-25 US US09/485,511 patent/US6357118B1/en not_active Expired - Lifetime
- 1998-04-25 CN CN98808405A patent/CN1091676C/en not_active Expired - Lifetime
- 1998-04-25 JP JP2000507504A patent/JP4328012B2/en not_active Expired - Lifetime
- 1998-04-25 DE DE59803213T patent/DE59803213D1/en not_active Expired - Lifetime
- 1998-08-04 JP JP2000507506A patent/JP4328014B2/en not_active Expired - Lifetime
- 1998-08-04 AT AT98946273T patent/ATE214650T1/en active
- 1998-08-04 CN CNB98808404XA patent/CN1138618C/en not_active Expired - Fee Related
- 1998-08-04 EP EP98946273A patent/EP1003630B1/en not_active Expired - Lifetime
- 1998-08-04 DE DE59803445T patent/DE59803445D1/en not_active Expired - Lifetime
- 1998-08-04 ES ES98946273T patent/ES2175779T3/en not_active Expired - Lifetime
- 1998-08-04 AU AU93386/98A patent/AU9338698A/en not_active Abandoned
- 1998-08-04 WO PCT/EP1998/004839 patent/WO1999010142A1/en active IP Right Grant
- 1998-08-04 RU RU2000107113/12A patent/RU2175602C1/en not_active IP Right Cessation
- 1998-08-04 PT PT98946273T patent/PT1003630E/en unknown
- 1998-08-18 US US09/136,092 patent/US6226871B1/en not_active Expired - Fee Related
-
2000
- 2000-11-13 HK HK00107227A patent/HK1027996A1/en not_active IP Right Cessation
- 2000-11-16 HK HK00107290A patent/HK1027997A1/en not_active IP Right Cessation
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Title |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7748123B2 (en) | 2006-08-31 | 2010-07-06 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
US8079149B2 (en) | 2006-08-31 | 2011-12-20 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
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