CN1080627C - Electric shaver - Google Patents
Electric shaver Download PDFInfo
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- CN1080627C CN1080627C CN98102679A CN98102679A CN1080627C CN 1080627 C CN1080627 C CN 1080627C CN 98102679 A CN98102679 A CN 98102679A CN 98102679 A CN98102679 A CN 98102679A CN 1080627 C CN1080627 C CN 1080627C
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Abstract
The present invention relates to an electric shaver. The electric shaver comprises an independent electric motor and a plurality of knife blades, such as three inner knife blades and three outer knife blades, wherein the output shaft of the electric motor is engaged with coupled gears of the inner knife blades in order that the inner knife blades can rotate through the electric motor; the output shaft of the electric motor is coupled with a speed reducing mechanism which is provided with a gear engaged with a gear arranged at the circumference of the outer knife blades in order that the outer knife blades can rotate at a lower speed than that of the inner knife blades.
Description
The present invention relates to a kind of electric shaver, relate in particular to a kind of rotating type electric razor.
Electric shaver, particularly rotating type electric razor generally include external blade and internal blade; Internal blade is the lower surface rotation of blade externally, cut the beard and hair that enters from the long and narrow import (beard and hair enters opening) that is arranged on the external blade by the internal blade of rotation and the static cutting force that external blade produced, as the hair on the head, hair etc. (only being called " beard and hair ").
In current electric shaver market, as top see, only be installed in internal blade in the shaver body head by being installed in the electro-motor rotation in the shaver shell; And the external blade that is installed in the shaver head is not equally rotated.
When using these shavers, beard and hair must be introduced from the beard and hair inlet port that is arranged on the external blade; Therefore, the user need hold the shaver shell with one and ceaselessly moving at skin surface.
Yet in the process of shaving, one of this usefulness is being held moving that shaver do not stop, and reaches about a few minutes to ten minute, makes arm muscular fatigue and pain.
Consider this several problems, in Japanese patent application publication H7-16360 number, disclose and recommended a kind of electric shaver that it comprises that the external blade of rotation is used for that hair is smoothly sent into hair and enters groove.
Yet this electric shaver uses a plurality of electro-motors to make external blade and internal blade rotation as drive source.Therefore be difficult to make the compact conformation of electric shaver.
Also have, because external blade is similar to internal blade, directly link to each other with the output shaft of electro-motor, rotary speed is generally very high, makes skin abrasion and coming to harm like this.In addition, the external blade of electric shaver directly contacts with skin, thereby is subjected to the resistance of skin.Therefore, in order directly to drive this external blade, need high moment of torsion electro-motor.Yet the common volume of this high moment of torsion electro-motor is bigger, therefore conflicts with the needed compactedness of this electric shaver.This high moment of torsion electro-motor is also expensive.
Therefore, general purpose of the present invention is these problems that solve the electric shaver of prior art.
Main purpose of the present invention provides a kind of electric shaver, and it comprises the outside and the internal blade of rotation, and the rotary speed of external blade has obtained reduction, and overall volume becomes compact.
Above-mentioned purpose is achieved by the razor structure of a uniqueness of the present invention, it comprises an electro-motor, by the external blade of electro-motor rotation and the internal blade that passes through the electro-motor rotation that is installed together with external blade, this shaver also is equipped with a reducing gear that is made of epicyclic gearing, its be installed in the motor drive shaft gear that links to each other with the output shaft of electro-motor and with gear that external blade links to each other between.
In the structure of foregoing description, the reducing gear of epicyclic gearing type is used as the mechanism that reduces the external blade rotary speed; Therefore this electric shaver can be made compactlyer as the shaver of decelerator than using the spur gear combination.
In addition, reducing gear comprises a plurality of planetary gearsets, each planetary gearsets is made up of a sun gear and a plurality of planetary gear, planetary gear be rotatably installed on the bracing frame and with the engagement of internal tooth sun gear, also comprise being positioned at a plurality of center planetary gears and the external tooth sun gear planetary gear engagement; Each of these planetary gearsets is arranged in the top of another or stack, forms multistage form.In addition, the internal tooth sun gear of each epicyclic gearing is installed in a cylindrical inner surface, so that use the external tooth sun gear jointly.And the external tooth sun gear of the epicyclic gearing that epicyclic gearing is adjacent with other is in the pivot engagement of the bracing frame of this epicyclic gearing.In other words, in this reducing gear, the multistage arrangement of a plurality of planetary gearsets is so that obtain a bigger speed reducing ratio; Simultaneously, each internal tooth sun gear all is installed on the cylinder.Therefore reducing gear itself can be made compactly.
In addition, be used as the external tooth sun gear (as the one-level of multi-stage planetary gear) of first order planetary gearsets with the motor drive shaft gear of the output shaft coupling of motor; Therefore, the pivot of the pivot of the output shaft of motor and reducing gear is arranged on straight line or the axis.Therefore, can make the external form diameter of reducing gear and motor design lessly, so that can make electric shaver make very compactly.
Fig. 1 is the cut-away section side view of one embodiment of the present of invention;
Fig. 2 shows the shaver head of Fig. 1 and the internal structure of head frame; Fig. 2 is the view along Fig. 3 center line 2-2;
Fig. 3 is a schematic diagram, shows the relation between the annular gear wheel of output gear of speed reducer and external blade, and view direction is along the direction of Fig. 2 center line 3-3.
Fig. 4 is the exploded view of the internal structure of the reducing gear of the present invention's use; And
Fig. 5 is a schematic diagram, shows the relation between the driving shaft of reducing gear and internal blade, and view direction is along the direction of Fig. 2 center line 5-5.
To a preferred embodiment of electric shaver of the present invention be described in detail in conjunction with the accompanying drawings.
In this embodiment, electric shaver 10 generally includes: 20, one connectors 22 of 18, one battery constituent elements of 16, one electro-motors of a synthetic resin casing and a switch 24.
Internal structure with reference to 2 pairs of head parts of figure is described in detail.
The upper end of the head part 16a of shell 16 be opening and covered by a dismountable framework 26; Installing plate 28 and driving shaft support 30 are installed in the inside of head part 16a.
Each external blade constituent element is made of an external blade 36 and an external blade support 38, and comprises built-in internal blade 40.
In addition, the first circular opening 42 is arranged on the head frame 26, its shape with external blade 36 is consistent, quantity equates (three (3) in this embodiment) with the quantity of external blade, and as above-described, the upper surface of the external blade 36 of external blade constituent element 12, as Fig. 1 saw, the outer surface of framework 26 was outwards outstanding from the head.
The structure of external blade constituent element 12 will be discussed in more detail below.Use three external blade constituent elements 12 in this embodiment, and they has identical structure, the external blade support 38 that each comprises external blade 36 and is with internal blade 40.
Each external blade 36 has a flange 36a who is arranged on its exterior periphery bottom.
Each external blade support 38 and has a larger-diameter part 38a end (see figure 2) disposed thereon in a tubular form, and a smaller diameter portion 38b is arranged on its lower end (see figure 2).
The larger-diameter part 38a of external blade support 38 is inserted in the bottom of corresponding external blade 36, hoop shape part 38b forms and meshes with the flange section 36a of external blade 36 by inwardly shrinking than the marginal portion of major diameter part 38a, so that external blade 36 and external blade support 38 connect into an integral body.Annular gear wheel 44 (will be described later) with the engagement of the deceleration output gear of reducing gear is installed in around the outside of smaller diameter portion 38c of external blade support 38 in addition.Annular gear wheel 44 is made and is fixedly mounted in by for example synthetic resin material around the outside of smaller diameter portion 38c of external blade support 38.Annular gear wheel 44 can be made an integral body with the outside surrounded surface of the smaller diameter portion 38c of external blade support 38 in addition.
In addition, each external blade constituent element 12 remain on head frame 26 and between so that external blade constituent element 12 can rotate.This rotatable device is by it has hair and enters the groove (not shown) and be arranged on upper surface and side surface with external blade 36[] top be inserted in first opening 42 that is arranged on the head frame 26, and be inserted into by the smaller diameter portion 38c that annular gear wheel 44 will be installed and obtain in second opening 46 that is arranged on the blade connecting frame 34.Second opening 46 is arranged to equate with the quantity of first opening 42, and corresponding with the position of first opening 42.The inside diameter of second opening 46 is littler than the outer dia than major diameter part 38a of external blade support 38, so that can stop each external blade constituent element 12 to skid off in blade connecting frame 34.
In addition, as shown in Figure 3, deceleration output gear 48 be installed in three annular gear wheel 44 by the external blade constituent element 12 of rounded projections arranged limit fixed in the heart, so that deceleration output gear 48 and each annular gear wheel 44 engagement, deceleration output gear 48 is output gears of a reducing gear (will be described below).
Below with reference to Fig. 2 driving mechanism 14 is described.
Electro-motor 18 is installed in the lower surface of installing plate 28, so that the output shaft 18a of motor 18 enters into the zone between installing plate 28 and the driving shaft support 30, and the output shaft 18a coupling of motor drive shaft gear 60 and motor 18.End portion (the perhaps upper end among Fig. 2) at motor drive shaft gear 60 is provided with an end tooth wheel part 60a, and it is used as the external tooth sun gear of the first order epicyclic gearing 58 of reducing gear 54; In addition, be provided with a basic gear 60b in its vertical intermediate (see figure 2) of motor drive shaft gear 60, its around motor drive shaft gear 60, and with the internal blade driven wheel engagement that is connected on three power transmission shafts 64 (back description).
In addition, three axle supported holes 62 are set on installing plate 28, so that in the face of driving shaft support 30.These three axle supported holes 62 (only showing two) are circular concentric with three shaft insertion holes 52 in 30 upper sheds of driving shaft support; And each power transmission shaft is inserted in these supported holes 62, so that power transmission shaft 64 is parallel with the output shaft 18a of motor 18, and can rotate by the axis around them in axle supported hole 62.
Each power transmission shaft 64 has internal blade driven wheel 66, the basic gear parts 60b of itself and motor drive shaft gear 60 around engagement; And a sky cover 68 that has to the cylindrical cavity of driving shaft support 30 openings zone 68a links to each other with the end (or the upper end among Fig. 2) of each power transmission shaft 64.
The end (lower end among Fig. 2) that is provided with each driving shaft 50 of flange 50b is inserted into the cavity area 68a of empty cover 68, and driving shaft 50 is connected on the empty cover 68 like this.The rib (not shown) that extends along the direction (or the vertical direction among Fig. 2) of power transmission shaft 64 is arranged on the inner wall surface of empty cover 68, and an opening (not shown) is arranged on the flange 50b, so that each driving shaft 50 is inserted in the cavity area 68a of empty cover 68, make the engagement of rib and opening.Like this, each driving shaft 50 can move with respect to corresponding sky cover 68 in the axial of power transmission shaft 64; And when empty cover 68 was rotated by motor 18 via internal blade driven wheel 66, driving shaft 50 was by empty cover 68 rotations.
A helical spring 70 is installed in the cavity area 68a of each empty cover 68, so that corresponding driving axle 50 is pushed to external blade constituent element 12 with respect to sky cover 68 always.
In other words, in the above-described embodiments, tubular portion 68b is arranged on the inside center of the internal cavities zone 68a on each empty cover 68, and end (descending) end of corresponding power transmission shaft 64 is inserted in the tubular portion 68b; In addition, the second cavity area 50c that overlaps 68 openings towards sky is arranged on the driving shaft 50, so that tubular portion 68b is inserted in the second cavity area 50c.In addition, helical spring 70 loosely is installed on the tubular portion 68b of empty cover 68, and is placed in the second cavity area 50c.
Below with reference to Figure 4 and 5 reducing gear 54 is described.
In electric shaver 10 of the present invention, internal blade 40 rotations (at full speed), external blade 36 is also rotated, so that the hair that hair is successfully brought on the external blade 36 can be entered in the groove.
In addition,, external blade do not cause the friction injury of skin for fully being rotated, this injury is to be rotated by the high speed of external blade to cause, do not use high moment of torsion electro-motor, in the present invention, reducing gear 54 is installed in electro-motor 18 and is installed between the annular gear wheel 44 on the external blade 36.In addition, reducing gear 54 is an epicyclic gearing shape structure, so that reduce the size of reducing gear 54 itself, thereby obtains a big speed reducing ratio.
More particularly, be shown specifically as shown in Figure 2 with among Fig. 4, reducing gear 54 is made of a plurality of epicyclic gearing 72,74 and 76, and they are mounted to and are parallel to each other or superposing type, adjacent one another are with multistage form in the vertical direction of Fig. 2 and Fig. 4.
Each epicyclic gearing 72,74 and 76 will be described below successively.
First order epicyclic gearing 72 is positioned at the position of the most close electro-motor 18, and it comprises: the sun gear 72a of a cylindrical internal tooth; Many (or three) individual planetary gear 72c, it is rotatably installed on the lower surface of the first tray deck 72B and with internal tooth sun gear 72a and meshes; And an external tooth sun gear, it is for end gear part (on the motor drive shaft gear 60) 60a and be placed on the center, so that centered on by a plurality of planetary gear 72c, and further meshes with each planetary gear 72c.
In the present embodiment, internal tooth sun gear 72a has one and three superposing type epicyclic gearing 72,74, and 76 the suitable axial length of gross thickness, so that, reaching 76 to all epicyclic gearing 72,74, internal tooth sun gear 72a plays the internal tooth sun gear.
Second level epicyclic gearing 74 comprises: an above-described internal tooth sun gear 72a; Many (or three) individual planetary gear 74c, it is rotatably installed on the lower surface of the second tray deck 74b; And an external tooth sun gear 74d, its be placed on the central area that centered on by a plurality of planetary gear 74c and with each planetary gear 74c engagement.This external tooth sun gear 74d is fastened to the upper surface of the first tray deck 72b of pivot.
Third level epicyclic gearing 76 comprises: an above-described internal tooth sun gear 72a; Many (or three) individual planetary gear 76c, it is rotatably installed on the lower surface of the 3rd tray deck 76b; And an external tooth sun gear 76d, its be placed on the central area that centered on by a plurality of planetary gear 76c and with each planetary gear 76c engagement.This external tooth sun gear 76d is fastened to the upper surface of the second support 74b, so that be positioned at pivot.
In other words, each epicyclic gearing 72,74 and 76 element are arranged in the inside of internal tooth sun gear 72a, and sun gear 72 makes a continuous cylindrical body be used jointly by three epicyclic gearing 72,74 and 76; And these epicyclic gearing 72,74 and 76 arrange so that the external tooth sun gear of each epicyclic gearing (74d, 76d) be installed in before the tray deck (72b of (low) primary planet pinion device, 74b), so that be placed into the pivot of tray deck.
As seeing above, in the present invention, an internal tooth sun gear 72a is by each epicyclic gearing 72,74 and 76 use jointly, therefore make the as a whole same diameter that has, and a plurality of epicyclic gearing 72,74 are installed in another top (or vertical installation as shown in Figure 4) with 76 with one of multistage form.Correspondingly, the reducing gear compactness that rearranges with the spur gear of a plurality of cardinal principle levels of the volume ratio of reducing gear 54 itself.What therefore, electric shaver 10 itself can be made is compacter.Equally, in preferred construction, gear 76c, 74c and 72c, gear 74d and 76d and dish 72b can be big or small identical with 74b, to reduce cost.
Above-described these three epicyclic gearing 72,74 prevent that by (top and bottom among Fig. 4) first and second lid 78f and the 78s that is connected with two holes them from skidding off from tubulose internal tooth sun gear 72a with 76 structural detail.
The reducing gear 54 that obtains like this is secured on the driving shaft support 30 by internal tooth sun gear 72a being inserted in the installing hole 56 on the support 30.
In addition, above-described deceleration output gear 48 as an output gear of reducing gear 54, is connected to the upper surface of the 3rd tray deck 76b of epicyclic gearing 76 at the highest level, so that be positioned at pivot.Deceleration output gear 48 stretches out from the centre bore 78a of the first lid 78f, and be placed on the center by 44 of three annular gear wheels that link to each other with each external blade constituent element 12 around so that deceleration output gear 48 meshes with each annular gear wheel 44.
Equally, the motor output shaft 60 with end tooth wheel part 60a (as the external tooth sun gear of first order geared system 72) is inserted in the centre bore 78a of the second lid 78s of internal tooth sun gear 72a.
In the superincumbent arrangement, best as seeing among Fig. 2, each power transmission shaft 64, driving shaft 50 and external blade constituent element 12 are installed on the same rotating shaft, and this output shaft 18a with electro-motor 18 is parallel.On the other hand, by identical with the position of the rotation of the output shaft 18a of electro-motor 18 with center of on, arranging three epicyclic gearing 72,74 and 76 reducing gears that obtain 54 of multistage form.
Operation to above-described embodiment now is described.
At first, when slide switch 24 started, electric current supplied to electro-motor 18 from battery 20, thereby electro-motor 18 starts, so that rotating output shaft 18a, thereby the motor drive shaft gear 60 of rotation and output shaft 18a coupling.As a result, external blade constituent element 12 and internal blade 40 are driven in rotation.
The driving rotation of external blade constituent element 12 and internal blade 40 will be described respectively below.
At first, will the rotation of internal blade 40 be described.
When motor drive shaft gear 60 is rotated (direction of rotation of gear 60 is represented with X), rotate along direction Y respectively with three internal blade driven wheels 66 of the basic gear parts 60b engagement of motor drive shaft gear 60, its direction of rotation with motor drive shaft gear 60 is opposite, makes three empty covers 68 that link to each other with the end of each power transmission shaft 64 also along identical Y direction rotation.Therefore, also rotate, so the internal blade 40 that is positioned at each external blade constituent element 12 is along the direction Y rotation opposite with the direction of rotation X of motor drive shaft gear 60 along direction Y with sky cover 68 three driving shafts 50 that link to each other.
In this case, Z2 is the number of teeth of basic gear 60b, and Z3 is the number of teeth of internal blade driven wheel 66, and the speed reducing ratio between them is Z3/Z2.If, Z2=16 for example, Z3=36, speed reducing ratio Ri (between internal blade driven wheel 66 and the basic gear parts 60b)=36/16=2.25.
Secondly, the rotation of external blade 36 will be described below.
As mentioned above, when motor drive shaft gear 60 when direction X rotates, revolving force is delivered to reducing gear 54 from the end tooth wheel part 60a of motor drive shaft gear 60.
The transmission of the revolving force of reducing gear 54 realizes by following step:
(1) at first, make circular motion (simultaneously planetary gear 72c itself also rotate) along the interior periphery of internal tooth sun gear 72a at the direction directions X identical with the first epicyclic gearing 72c of end tooth wheel part 60a engagement with end tooth wheel part 60a.As a result, support 72b rotates along direction X around end tooth wheel part 60a.
(2) in second epicyclic gearing 74, with the same in first planetary gear 72, the external tooth sun gear 74d that links to each other with support 72b rotates along the direction X identical with end tooth wheel part 60a; Therefore, planetary gear 74c is around their axle rotation, and also around end tooth wheel part 60a rotation, support 74b is also along same direction X rotation.
(3) have, the same with first planetary gear in the third line star gear device 76, the external tooth sun gear 76d that links to each other with support 74b rotates along the direction X identical with end tooth wheel part 60a again; Therefore, planetary gear 76c is around their axle rotation, and also around end tooth wheel part 60a rotation, the 3rd support 76b is also along same direction X rotation.
The speed reducing ratio of this reducing gear 54 can followingly be represented:
At this, Zo is the number of teeth of internal tooth sun gear 72a, and Zu1 is the number of teeth of end tooth wheel part 60a (constituting the external tooth sun gear of first epicyclic gearing), and Zu2 is the number of teeth of the second external tooth sun gear 74d, and Zu3 is the number of teeth of the 3rd external tooth sun gear 76d.Like this
Speed reducing ratio Rg=(1+Zo/Zu1) * (1+Zo/Zu2) * (1+Zo/Zu3)
In the present embodiment, for example, Zo=36, Zu1=Zu2=Zu3=12, therefore, speed reducing ratio Rg=4 * 4 * 4=64.
As mentioned above, because the 3rd (or topmost) support of reducing gear 54 rotates along direction X, the deceleration output shaft 48 that links to each other with the 3rd support 76b is along direction X rotation, and this revolving force is delivered on the annular gear wheel 44 of external blade constituent element 12, so that make annular gear wheel 44 direction Y rotation.External blade constituent element 12 rotates along the direction Y opposite with end tooth wheel part 60a direction of rotation X as a result.Therefore external blade 36 itself is rotated along direction Y with external blade constituent element 12.
In this case, the whole speed reducing ratio Ro of external blade constituent element 12 can be expressed as with reference to electro-motor 18:
Ro＝Rg×Z5/Z4
At this, Z4 is the number of teeth of deceleration output gear 48, and Z5 is the number of teeth of annular gear wheel 44.
In the above-described embodiments, because external blade 36 rotation, even electric shaver 10 ceaselessly moves around skin when hand-held, hair is such as beard, etc., can enter fully in the groove (not shown) that is arranged on the external blade 36.Therefore, can realize effectively shaving, and alleviate the fatigue of arm muscle.
In addition, internal blade 40 and external blade 36 are rotated along same direction Y; Yet the speed reducing ratio of internal blade 40 (with respect to motor 18) is approximately 2 (2.25), so that internal blade 40 is with rotation at a high speed; On the other hand, the speed reducing ratio of external blade 36 (with respect to motor 18) is 180, so that external blade 36 is with extremely low speed rotation.Therefore, because external blade 36 is different with the speed that relatively rotates of internal blade 40, hair enters by the groove on the external blade 36 and cuts off by shearing force.Have again,, do not damaged by the frictional force that produces between skin and the external blade 36 with the skin that external blade 36 directly contacts because external blade 36 rotating speeds are very low.Also have, because speed reducing ratio is big, external blade 36 can overcome contact resistance with skin with previously described rotary speed, even do not use the large-torque electrical motor good.
Have, external blade 36 and internal blade 40 drive rotation by means of an electro-motor 18 again; Therefore, even the rotary speed of electro-motor 18 fluctuates with the variation of cell voltage, rotating ratio can be consistent (being 2.25 to 180 among the embodiment that describes in the above for example).Therefore, when the speed when external blade 36 is changeed (best per minute 40 to 60 commentaries on classics) with about per minute 100 below is rotated, the speed rotation that internal blade 40 changes with about per minute 3,900.In addition, because independent electro-motor 18 is used to the drive source of outside and internal blade 36 and 40, electric shaver is made compactly.
The various aspects of the preferred embodiments of the present invention have been described above.Yet the present invention is not limited to the foregoing description.
In the above-described embodiments, three epicyclic gearing have been used.Yet, the number of epicyclic gearing can improve according to the speed reducing ratio of needed reducing gear, for example, sometimes, need less speed reducing ratio, the number of epicyclic gearing can reduce to two (rather than three), yet, when preferred bigger speed reducing ratio, planetary number rises to four or more.
Have, being provided with a plurality of epicyclic gearing and also being used for the external blade constituent element with the reducing gear that multistage form is arranged is 1 or 2 situation again.
In addition, the number of teeth of gear and diameter and employed planetary gear number can change according to desired electric shaver, and above-described embodiment is an example of the present invention.
Also have, in the above-described embodiments, internal blade 40 and external blade 36 are rotated in same direction; Yet, also can be designed to these blades and in the opposite direction rotate.This can realize by counter gear is installed between basic gear parts 60b and internal blade driven wheel 66.
The present invention is not limited by the examples, and obviously can carry out various improvement in spirit of the present invention.
As seeing, according to the present invention, used planetary gear, to lower the rotary speed of external blade from foregoing detailed description.Therefore, compare with the reducing gear that uses spur gear, what this reducing gear can be manufactured is compacter, and can access bigger speed reducing ratio.
Have, according to the present invention, bigger speed reducing ratio obtains by a plurality of gear trains are installed with multistage form, and the internal planetary gear of this internal planetary gear device is provided with an independent continuous cylinder again; Therefore, the structural detail of each epicyclic gearing is planetary gear for example, and external tooth sun gear and support etc. can be contained in the cylindrical internal tooth sun gear element, can further reduce the volume of reducing gear itself like this.In addition, because motor drive shaft gear with the motor output shaft coupling, as the external tooth sun gear of first epicyclic gearing, as the epicyclic gearing that is installed in cylindrical internal tooth sun gear inside, the pivot of motor output shaft and the pivot of reducing gear are on same straight line.Therefore, the outside overall diameter of reducing gear and motor can reduce, and makes electric shaver can make compactlyer.
Claims (5)
1, a kind of electric shaver, it is equipped with an independent electro-motor, the external blade of being rotated by described electrical motor driven, and be installed together with described external blade and by the internal blade of described electrical motor driven, described shaver is equipped with a reducing gear that is made of epicyclic gearing, and it is installed in a motor drive shaft gear that links to each other with the output shaft of described electro-motor and is installed between the gear on the described external blade.
2, electric shaver as claimed in claim 1, wherein said reducing gear comprises:
A plurality of epicyclic gearing, each epicyclic gearing comprises: an internal tooth sun gear, a plurality of be rotatably installed on the support and with described internal tooth sun gear planet gear meshed, and external tooth sun gear that is positioned at described a plurality of planetary centers, this external tooth sun gear and each described planetary gear engagement, and
Described a plurality of epicyclic gearing is mounted to multistage form, described internal tooth sun gear is arranged on the independent continuous cylindrical body, make it can be shared by described planetary gear institute, and the described external tooth sun gear engagement of the epicyclic gearing that described epicyclic gearing is adjacent with another, the latter is in the pivot position of the described support of described epicyclic gearing.
3, according to the electric shaver of claim 1 or 2, wherein, described motor drive shaft gear is the external tooth sun gear that is arranged on first epicyclic gearing in the described epicyclic gearing of multistage form.
4, a kind of electric shaver, it comprises: an independent electro-motor, a plurality of rotatable annular, outer blades, a plurality of internal blades that are rotatably installed in described external blade inside, and reducing gear with described a plurality of external blade couplings, wherein, the output shaft of described independent electro-motor links to each other with described reducing gear is coaxial, described reducing gear has a deceleration output gear, this output gear and the gears engaged that is installed in around described a plurality of external blade, so that described a plurality of external blade is by described independent electro-motor rotation, and, the described output shaft of described independent electro-motor circumferentially is connected with gear train, each of this gear train separately with each couplings of described a plurality of internal blades so that described a plurality of internal blade is by described independent electro-motor rotation.
5, electric shaver as claimed in claim 4, wherein,
Described reducing gear comprises:
A cylindrical internal tooth sun gear, and
A plurality of tray decks that are installed on the described internal tooth sun gear, so that can a parallel placement with another, each of described a plurality of tray decks all is equipped with the rotatable planetary gear of a plurality of and described internal tooth sun gear engagement, and described a plurality of tray deck connects together by the external tooth sun gear, its each and the described planetary gear engagement that is installed on described a plurality of tray deck, and wherein
The described output shaft of described motor by a motor drive shaft gear, links to each other with of described a plurality of tray decks of an end that is arranged in described internal tooth sun gear, and
Another of the described deceleration output gear of described reducing gear and described a plurality of tray decks of the other end that is arranged in described internal tooth sun gear links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98102679A CN1080627C (en) | 1998-06-26 | 1998-06-26 | Electric shaver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98102679A CN1080627C (en) | 1998-06-26 | 1998-06-26 | Electric shaver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1240699A CN1240699A (en) | 2000-01-12 |
| CN1080627C true CN1080627C (en) | 2002-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98102679A Expired - Fee Related CN1080627C (en) | 1998-06-26 | 1998-06-26 | Electric shaver |
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| CN (1) | CN1080627C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6200918B2 (en) * | 2015-07-09 | 2017-09-20 | 株式会社泉精器製作所 | Rotary electric razor |
| CN107214737A (en) * | 2017-05-18 | 2017-09-29 | 中北大学 | 4D floating rotary razor tool tips |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4001932A (en) * | 1972-07-14 | 1977-01-11 | Bissell Inc. | Rotary shaver with shear plate rotation preventing means |
| US4038747A (en) * | 1973-09-27 | 1977-08-02 | Upton Douglas J | Electric razor having an oscillating cutting head |
| US4101593A (en) * | 1976-05-17 | 1978-07-18 | Uop Inc. | Dehydrogenation method and nonacidic multimetallic catalytic composite for use therein |
-
1998
- 1998-06-26 CN CN98102679A patent/CN1080627C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4001932A (en) * | 1972-07-14 | 1977-01-11 | Bissell Inc. | Rotary shaver with shear plate rotation preventing means |
| US4038747A (en) * | 1973-09-27 | 1977-08-02 | Upton Douglas J | Electric razor having an oscillating cutting head |
| US4101593A (en) * | 1976-05-17 | 1978-07-18 | Uop Inc. | Dehydrogenation method and nonacidic multimetallic catalytic composite for use therein |
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| Publication number | Publication date |
|---|---|
| CN1240699A (en) | 2000-01-12 |
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