CN1272149C - Electric shaver - Google Patents

Abstract

The motor 31 is made into one body with a deceleration transmission mechanism D for decelerating motor power, so as to obtain one power module M. Thus, the structure of the power transmission mechanism from the motor 31 to the cutter 15 is simplified simultaneously with raising transmission efficiency. The unitized power module M is utilized as a power source for the different kinds of electric razors. Power decelerated by the deceleration transmission mechanism D is transmitted to the cutter 15 via a succeeding stage transmission mechanism E. The deceleration transmission mechanism D includes a planet gear mechanism, so as to obtain a prescribed deceleration ratio, while minimizing the engagement part of gears, to suppress the generation of gear noise. The succeeding stage transmission mechanism E includes a wrapping transmission mechanism with an endless belt 135 as a transmission element. The noise, therefor, is prevented from being generated in the succeeding stage transmission mechanism E, and a noise level is lowered in the outer part of the electric razor.

Description

Electric shaver

Technical field

The present invention relates to having made improved electric shaver from motor to the power drive mechanism that contains reducing gear that cuts off sword.

Background technology

About the rotator type electric shaver, disclose following content at Japan Patent No. 2741054 (calling patent documentation 1 in the following text): the motor of vertically configuration and assembly the inner blade unit of power drive mechanism integrated, in other words, with motor and power drive mechanism blocking (seeing the 2nd page and Fig. 1 for details).In this invention, though constitute from motor to the part power drive mechanism that cuts off sword with flexible transmission mechanism, to lower the transmission noise, but this kind power drive mechanism that is adopted but is known, see that the open communique spy of Japan Patent opens (calling patent documentation 2 in the following text) 2002-306864 number, but electric shaver wherein is not the motor of configuration horizontal arrangement type, but motor is vertically disposed.

In patent documentation 1, with bevel gear motor power is converted to behind the rotary power of trunnion axis, utilize the gear train that constitutes with the straight-tooth wheels to slow down, be sent to inner edge.For this reason, constitute the occasion of seriation commodity at the some kinds of electric shavers of inciting somebody to action such as the inner edge number is different, must in the manufacturing of electric shaver, to spend many times and step with regard to every kind of electric shaver redesign gear train, become one of reason of its production cost increase.In addition, also can produce gear noise inevitably, this results from the free gap between backlash, gear and the gear shaft that each gears engaged portion produces, so noise level is higher during the use electric shaver.Owing to be to be passed to inner edge after with a plurality of straight-tooth wheels motor power being slowed down, so only because of the gear consumption makes the transmission efficiency of power low more, this respect just leaves some room for improvement.

To this, the electric shaver of patent documentation 2, owing to be with the flexible transmission mechanism that is disposed at the first side of shaver the motor power that slows down through the straight-tooth wheels to be passed to inner edge, so can reduce the transmission noise of transmission mechanism final stage.Yet, owing to be with the side of straight-tooth wheels centralized configuration, so can form the dead band in other sides inevitably, the waste that causes the casing inner space to utilize in the flexible transmission mechanism configuration position of the lower space of razor head.

By the way, in the rotator type electric shaver, the revolution that adopts output shaft mostly is the high rotating speed low torque type motor about 8000rpm; By motor power is decelerated to about 1/4, enough driving torques and suitable revolution can be passed to inner edge; Even shave the occasion of long palpus or hard palpus, also the amplitude of fluctuation of motor revolution can be suppressed to reduced levels, be able under stable state, shave.That is, this is that prerequisite constitutes transmission mechanism with the multi-stage speed-reducing transferring power, and this also is a reason that causes the power drive mechanism complexity, is difficult to reduce the transmission noise.

Motor with high torque (HT) slow-speed of revolution type is that drive source is not can not.But, though can simplify power drive mechanism this moment, motor itself is maximized, so that electric shaver maximizes, although power drive mechanism obtains simplifying, overall weight increases.

Summary of the invention

Purpose of the present invention just is to provide a kind of new electric shaver, its motor is merged into 1 power plant module with the transmission mechanism that is used for this motor power slows down, this power plant module can be common to the occasion of the electric shaver that specifications such as inner edge number difference for example is different as the seriation commodity, can correspondingly save product development required time and step, reduce production costs.

The present invention also aims to provide a kind of and can realize the designs simplification of power drive mechanism and the electric shaver that transmission efficiency improves simultaneously from motor to inner edge.

The object of the invention also is to provide a kind of like this electric shaver: although with the power drive mechanism centralized configuration in the first side of shaver, can in casing, not form the dead band, can effectively utilize the casing inner space.

The object of the invention also is to provide a kind of like this electric shaver: the power drive mechanism from motor to inner edge comprises reduction gearing mechanism D that is made of planetary gears and the secondary transmission mechanism E that is made of flexible transmission mechanism, both can simplify the overall structure of power drive mechanism, can realize low noiseization again.

As shown in Figure 1, electric shaver of the present invention is provided with razor head 2 on main case 1 top, has the inner edge 15 of rotation and the motor 31 of driving inner edge 15 on the razor head 2; Side at motor 31 disposes the reduction gearing mechanism D that motor power is slowed down; It is characterized in that: the reduction gearing mechanism D of unit partsization is fixed in a side of motor 31, and motor 31 and reduction gearing mechanism D constitute a power plant module M.

Will be with the transmission of power of reduction gearing mechanism D deceleration secondary transmission mechanism E in the configuration of the lateral surface of reduction gearing mechanism D to inner edge 15.

The starting of oscillation structure that the rotary power of motor 31 is converted to reciprocating power is assembled in power plant module M; The output shaft 55 of the output shaft 32 of motor 31 and reduction gearing mechanism D both one of on be fixed with the driving cam 67 that constitutes the starting of oscillation structure.In being formed at the reduction chamber 57 of a side of motor 31, delimitation accommodates reduction gearing mechanism D.

Motor 31 fixedly is contained in the motor outer cover 33, and its output shaft 32 protrudes in the reduction chamber 57; Reduction chamber 57 is divided into motor outer cover 33 and is fixed in the deceleration box 54 of the side of motor outer cover 33; The inner space of motor outer cover 33 and reduction chamber 57 with next door 58 separately, thereby be divided into separately independently space.

Reduction gearing mechanism D is made of planetary gears; This planetary gears comprises: be fixed in the output shaft 32 of motor 31 central gear 50, with these central gear 50 planet gear meshed 51, can rotate freely earth's axis support planetary gears 51 tooth rest 52, have with the deceleration box 54 of the internal gear 53 of planet gear 51 engagement and be decelerated that 54 of casings support and the output shaft 55 of the rotary power of output gear wheel carrier 52.

With motor 31 landscape configuration in the bottom of razor head 2; Secondary transmission mechanism E comprises: the drive pulley 132 that is disposed at the bottom of razor head 2 and top is with driven pulley 133 and be wound on two endless-belts 135 on the belt pulley 132,133.

The drive pulley 132 of secondary transmission mechanism E can be fixed on the output shaft 55 of the outside that protrudes in deceleration box 54, and is moving by drive pulley 132 limiting gear framves 52 string in the axial direction.Secondary transmission mechanism E is housed in the Transmission Room 137 of delimiting a side that is formed at razor head 2.

The rate of deceleration of reduction gearing mechanism D is configured such that it accounts for the almost whole of total reduction ratio between motor 31 and the inner edge 15.

Razor head 2 is supported by main case 1, can comprise all around, on float on inferior all directions comprehensive; The unsteady Support Position of razor head 2 is arranged at the below of motor 31.

Motor outer cover 33 is made of the supporter outer cover 39 of the opening of the tubular motor support body 38 of having accommodated almost whole motor 31 and this motor support body 38 of shutoff; The guidewire port 44 of lead 45 below the central authorities that are opened on motor support body 38 that is connected in motor 31 drawn, connect with the circuit board 26 that is contained in the main case 1.

The sealing pad 40 that output shaft 32 usefulness of motor 31 that protrude in the side of motor outer cover 33 is installed on supporter outer cover 39 is made waterproof sealing; And then, with between the inner face of the following and main case 1 of motor outer cover 33 with 100 sealings of casing sealing pad, thereby make electrical part unit 3 waterproof in the main case 1.

Possess by what the reciprocating power with starting of oscillation structure conversion back and forth drove and move back and forth sword 13,17; This starting of oscillation structure comprises: be fixed in the output shaft 32 of motor 31 driving cam 67, be driven driven member 68 that cam 67 up and down reciprocatingly drives, be disposed at motor 31 around and by can about with being free to slide the guiding support slide 70 and be connected the transmission body 69 of driven member 68 and slide 70; Transmission body 69, the position is under the case of bending therebetween, along the slip plane configuration of driven member 68 with slide 70; Action about the knee-action of driven member 68 is directly changed into by transmission body 69 drives slide 70 along moving back and forth on the left and right directions.

Motor 31 fixedly is contained in motor outer cover 33; Slide 70 by the top guide way 90 that is fixed in motor outer cover 33 can about with being free to slide guiding support.

Inside and outside the bend of transmission body 69, shift guiding by interior guide way 80 and outer guide way 81.Make it the guide plate 66 that easy on and off moves is fixed on the motor outer cover 33 but guiding supports driven member 68; The outer guide way 81 that is made of roller is freely supported by guide plate 66 revolutions, is external in the bend of transmission body 69 with the line contact condition.

Transmission body 69 usefulness toothed timing belts form; Interior guide way 80 by with the revolution of the land of transmission body 69 engagement freely gear constitute.

The present invention can reach following good effect.

The present invention is a kind of electric shaver that has the inner edge 15 of rotation and drive the motor 31 of inner edge 15 on razor head 2, because reduction gearing mechanism D in side fixed cell partsization of motor 31, motor 31 and reduction gearing mechanism D are constituted a power plant module M, so when for example the different electric shaver of use number of inner edge 15 constituted the seriation commodity, it became strength member.And, owing to make the power plant module that accounts for the whole cost large percentage of electric shaver general, so needn't be with regard to every kind of electric shaver redesign power drive mechanism, correspondingly can cut down the product development required time and the production cost of serial commercial electric shaver, can realize cost degradation.

If in power drive mechanism, will be with the transmission of power of reduction gearing mechanism D deceleration secondary transmission mechanism E in the configuration of the lateral surface of reduction gearing mechanism D to inner edge 15, when structural variations such as configuration that inner edge 15 occurs or use number, owing to can only correspondingly change secondary transmission mechanism E, can make the different electric shaver of structure specification more simply.

If adopt above-mentioned electric shaver, the driving cam 67 that constitutes the starting of oscillation structure be fixed in the output shaft 32 of motor 31 and reduction gearing mechanism D output shaft 55 both one of, rotary power with motor 31 is converted to the starting of oscillation tectonic association of reciprocating power in power plant module M, then except the rotary power that drives inner edge 15, because reliable power plant module M provides in the lump and moves back and forth sword 13, the driving power of 17 usefulness, thereby, can easily make such as only possess the electric shaver of inner edge 15 respectively, not only possesses inner edge 15 but also possess the sword of moving back and forth 13,17 electric shaver, and do action by the power plant module M to assembling in advance and test, can improve the reliability of power drive mechanism.

If adopt the power plant module M that in delimitation is formed at the reduction chamber 57 of a side of motor 31, accommodates reduction gearing mechanism D, owing to can prevent the external leaks of the transmission noise of reduction gearing mechanism D to reduction chamber 57, thereby can reduce the transmission noise content of the outside of razor head 2 when using, correspondingly make more quietization of electric shaver.

If in power plant module M, to divide reduction chamber 57 and motor outer cover 33 inside of accommodating motor 31 with the deceleration box 54 of the side that is fixed in motor outer cover 33, the inner space and the reduction chamber 57 of motor outer cover 33 are divided into separate space respectively, the noise that spills from motor 31 and can be closed in the inside of motor outer cover 33 and the inside of reduction chamber 57 respectively then from the noise that reduction gearing mechanism D spills, and can prevent noise in each subregion from cooperatively interacting and strengthen the acoustic pressure of noise, can obtain the good electric shaver of quietness on the whole.

If adopt the reduction gearing mechanism D that constitutes by planetary gears, this planetary gears is made of the output shaft 55 of the rotary power of central gear 50, planetary gear 51, tooth rest 52, the deceleration box 54 with internal gear 53 and output gear wheel carrier 52, compare with the situation that constitutes the transmission mechanism of the speed reducing ratio identical with straight-tooth wheels for example with planetary gears, can reduce the actual use number of gear, simplified construction, but also can simplify power transfer path, improve the transmission efficiency of motor power.Because the gear noise of planetary gears only limits to central gear 50 and planetary gear 51, reach the gearing noise of 53 of planetary gear 51 and inner edge gears, thereby can realize simultaneously reducing the sound pressure level of noise and improving frequency characteristic, can reduce the noise level of electric shaver.

If in electric shaver, with motor 31 landscape configuration after the bottom of razor head 2, the flexible transmission mechanism that employing comprises drive pulley 132 and driven pulley 133 and is wound on the endless-belt 135 on two belt pulleys 132 and 133 constitutes secondary transmission mechanism E, then compare with the occasion of the secondary transmission mechanism E that constitutes with gear train, the generating capacity that can obviously suppress the transmission noise, correspondingly reduce the whole noise generating capacity of power transmission structure, realize low noiseization.Because landscape configuration motor 31, so compare with vertical configuration motor, also have following advantage: not having in a side of motor 31 has the leeway that produces the dead band, and the space utilization in the main case 1 does not have waste, can use the big thereby bigger motor 31 of driving torque of left and right sides length.

Give prominence on the output shaft 55 of the outside of deceleration box 54 if the drive pulley 132 of secondary transmission mechanism E is fixed in, come limiting gear frame 52 string in the axial direction moving with drive pulley 132, then can prevent the noise that produces based on the axial motion of tooth rest 52 reliably, but also can alleviate the transmission of power loss.

If secondary transmission mechanism E is contained in the Transmission Room 137 of delimiting a side that is formed at razor head 2, can prevent that then transmission noise that reduction gearing mechanism D or secondary transmission mechanism E are produced from directly leaking into the outside of razor head 2, can prevent better that the transmission noise to the electric shaver external leaks, correspondingly reducing the noise level of electric shaver outside.

If the rate of deceleration of reduction gearing mechanism D is set to account for the almost whole of total reduction ratio between motor 31 and the inner edge 15 in electric shaver, owing to can dwindle the rate of deceleration between reduction gearing mechanism D and the inner edge 15, so the driving revolution of the input of secondary transmission mechanism E diminishes, correspondingly can suppress the generating capacity of the transmission noise of secondary transmission mechanism E.

If in electric shaver, razor head 2 is supported with main case 1, make it and to comprise all around, to float on all directions comprehensive up and down, the unsteady Support Position of razor head 2 is arranged at the below of motor 31, then near the occasions that are in the motor 31 with the unsteady Support Position of razor head 2 are compared, owing to can increase razor head 2 turning angles, thereby can make razor head 2 follow the concavo-convex of skin and fascinate in the garden slidingly.

If in electric shaver, constitute motor outer cover 33 by the motor support body 38 of tubular and the supporter outer cover 39 of its opening of shutoff, guidewire port 44 below the central authorities that are opened on motor support body motor support body 38 is drawn the lead 45 that is connected in motor 31, make it to be connected on the circuit board 26 that is contained in the main case 1, the displacement of lead 45 in the time of then can reducing razor head 2 comprehensive fascinating is eliminated the big deformation force that acts on the lead 45.Thereby the broken string that produces because of fatigue rupture in can preventing to use for a long time can prevent well that also the action of fascinating of razor head 2 from being hindered by lead 45.

If in electric shaver, make waterproof sealing with the output shaft 32 that is installed on the 40 pairs of motors 31 of sealing pad on the supporter outer cover 39, with crack between the inner face of the following and main case 1 of casing sealing pad 100 hermetic motor outer covers 33, thereby make electrical part unit 3 waterproof in the main case 1, when then water cleans razor head 2, can prevent reliably that water from immersing motor 31 and electrical part unit 3.

With the driving cam 67 of the output shaft 32 that is fixed in motor 31 be driven driven member 68 the rotary powers that cam 67 up and down reciprocatingly drives and convert to after the reciprocating action of above-below direction with motor 31, action about with the transmission body 69 of middle part bending this knee-action being directly changed into drives slide 70 and moves back and forth along left and right directions.Therefore, compare with existing starting of oscillation structure, owing to can make the driven member 68, transmission body 69 and the slide 70 shared motion space amounts that move back and forth reach minimum, thereby can eliminate in starting of oscillation mechanism peripheral part generation dead band, but the part of peripheral part of centralized configuration starting of oscillation mechanism correspondingly improves the concentration degree of the constituent part of razor head 2.Since be directly knee-action is converted to transmission body 69 about action, so compare, can not produce noise and make starting of oscillation construct quietization with existing action transformed structure of the same race.

If adopt top guide way 90 guiding to support slide 70 by being fixed in motor outer cover 33, make its can about the power plant module M that is free to slide, then for example in the occasion of support slide 70 that directly leads with motor outer cover 33, though can form spigot surface in its outside to slide 70, but when the bigger motor outer cover 33 of shaping volume, can on spigot surface, produce pore etc. because of the contraction of molten resin, cause shaping bad, having correctly to lead supports the danger of slide 70.To this, if guide way 90 was arranged with the motor outer cover in 33 minutes, then, there is not the leeway that produces bubble because guide way 90 volumes are little, can more correctly form this spigot surface 91, support slide 70 thereby can correctly lead.

In inside and outside such starting of oscillation that inner guide way 80 and outer guide way 81 shift the bend of guiding transmission body 69 is constructed, when transmission body 69 moves up and down with the moving up and down interlock of driven member 68, interior guide way 80 shifts the transmission body 69 that guiding descends and moves, outer guide way 81 is pressed on the driven member 68 and is made the transmission body 69 that rises and move by shifting guiding, thereby moves about knee-action converted to.Like this, when the bend that shifts the transmission body 69 that lead with interior guide way 80 and outer guide way 81 inside and outside, inner outer guide way 80 and 81 is corrected the mobile route of the transmission body 69 of bend, can stop transmission body 69 unnecessarily crooked, can successfully carry out from knee-action to about the action This move conversion, to alleviate power loss.

If adopt following starting of oscillation structure, promptly, the guide plate 66 that but its easy on and off is moved guiding support driven member 68 is fixed on the motor outer cover 33, the outer guide way 81 that is made of roller is supported in 66 rotations freely by guide plate, make outer guide way 81 be external in the bend of transmission body 69 with the line contact condition, owing to can make the friction of 69 of outer guide way 81 and transmission body reach minimum by outer guide way 81 rotations, thereby can eliminate the fatigue under scrubbing of the bend of transmission body 69, can improve the reliability in the long-term use.Further, can make and carry out smoothly, can back and forth drive slide 70 reliably with enough strokes by the commutation action of last press-bending pars convoluta and driven transmission body 69.

If form transmission body 69 with toothed timing belt, the rotation gear freely that meshes with the land with transmission body 69 constitutes interior guide way 80, when then transmission body 69 risings are mobile, can come by the synchronous rotation of interior guide way 80 successfully transmission body 69 to be commutated and leads, and can prevent transmission body 69 and the slippage between the two of interior guide way 80 reliably, can carry out reliably under the state of no conversion loss from knee-action to about the action of action change.Because transmission body 69 and interior guide way 80 intermesh by tooth, thus can inner guide way 80 peptizaitons in the driving force of the bend of transmission body 69.In other words, because the driving force that can avoid acting on bend concentrates on a place, thereby can alleviate the transmission additional force of transmission body 69 is increased the life-span.

Description of drawings

Fig. 1 is the schematic diagram of schematic representation power drive mechanism.

Fig. 2 is the front view of electric shaver.

Fig. 3 is the side view of electric shaver.

Fig. 4 is the decomposition front view of electric shaver.

Fig. 5 is the sectional view of main case bottom.

Fig. 6 is the exploded perspective view of razor head and power plant module.

Fig. 7 is the exploded perspective view after razor head shown in Figure 6 is further decomposed.

Fig. 8 is the exploded perspective view of power plant module.

Fig. 9 is a razor head longitudinal cross-section front view.

Figure 10 is a power plant module partial cutaway front view.

Figure 11 is the longitudinal cross-section side view of razor head.

Figure 12 is the view in transverse section of reduction gearing mechanism.

Figure 13 is the exploded perspective view of power plant module.

Figure 14 is the exploded perspective view of planetary gears.

Figure 15 is the longitudinal cross-section side view of planetary gears.

Figure 16 is the central longitdinal cross-section diagram of razor head.

Figure 17 is the longitudinal cross-section front view of starting of oscillation structure.

Figure 18 is about the expression razor head and the key diagram of the action that fluctuates.

Figure 19 be before and after the expression razor head and about the float key diagram of action.

Figure 20 is the decomposition front view of razor head.

Figure 21 is the sectional view of expression razor head vibrational state.

Figure 22 is an expression inner blade unit fit structure longitudinal cross-section side view.

Figure 23 is the exploded perspective view of the razor head separated of inner blade unit.

Figure 24 is the longitudinal cross-section side view of the secondary transmission mechanism of expression.

Figure 25 is the exploded perspective view based on the expression safety switching mechanism.

Figure 26 is the longitudinal cross-section side view of the relation of expression outside supporter and safety switching mechanism.

Figure 27 is the longitudinal cross-section side view that expression takes down the state behind the outside supporter.

Figure 28 is the sectional view along the X-X line of Figure 26.

Figure 29 is the key diagram of the summary of expression control circuit.

Figure 30 is the exploded perspective view of expression power plant module application examples.

Figure 31 is the schematic diagram of the another kind of power plant module application examples of expression.

Figure 32 is the schematic diagram of other embodiment of expression floating structure.

The specific embodiment

Fig. 1 to Figure 30 voting shows that the present invention is applied to the embodiment of rotator type electric shaver.The structure of the electric shaver among Fig. 2 to Fig. 4 is to have main case 1, be located at the razor head 2 on main case 1 top and be contained in main components such as electrical part unit 3 in the main case 1.

Be provided with in main case 1 front: the handover operation parts such as selection button 7 of the release knob 5 that motor starting is used, lock-button 6, running mode switching; And display unit.Display unit comprises 4 kinds of lamps: be located at the rechargeable lamp 8 of selecting button 7 upsides, battery allowance display lamp 9, what be located at casing top can be corresponding to operational mode and the pattern display lamp 10 that is reverse U shape of variable color and the sensor light 11 of bright lamp with beard sensing switch interlock.The action of these display lamps will be in aftermentioned.

Among Fig. 3, be provided with shave sword (moving back and forth sword) 13 and operation edge, edge in the back side of main case 1 side and shave sword 13 and be pressed onto the slip handle 14 of activation point on making it.Have in the internal configurations of razor head 2 and to shave sword (moving back and forth sword) 17 around each inner edge of 1 pair 15 of front and back that transverse axis rotates and outside 16, center and to drive the driving mechanism etc. of these swords that shave.About razor head 2, be provided with the pair of right and left disengage button 19 that is used for razor head 2 locking made it lock handle 18 that can not swing and outside supporter 12 carried out the latch-release operation etc.

Main case 1 is made of the simplified of upper and lower surface opening, and lower aperture is with end casing 21 blockings.As shown in Figure 5,, main case 1, electrical part unit 3 and end casing 21 threes can be integrated by end casing 21 being fixed on the inner support 25 with pair of right and left screw 22, inseparable.End casing 21 and the joint portion of main case 1 and the screw 22 and charging plug 23 that connects end casing 21 are respectively with sealing ring 24,22a, the sealing of 23a water proofing property.

Among Fig. 4, electrical part unit 3 comprises: inner support 25, be installed on inner support 25 fronts circuit board 26, be disposed at the pair of right and left of circuit board 26 back sides one side 2 grades of batteries 27, be assembled in power switch on the circuit board 26 and various demonstration with LED etc.At the top of inner support 25 inner face, relative state about cooperate keeping cooperating pawls 28 (with reference to Fig. 4) to form in 4 of floating shelf 34 described later, in the support upper end, being formed for installing will be in the sealing frame 29 of the outer peripheral edges of casing sealing pad 100 described later.

Among Fig. 6 and Fig. 7, razor head 2 comprises: accounted for the head structure that shakes of the power plant module M that contains reduction gearing mechanism D, the first half one side of the latter half, the motor power after will being slowed down by power module M be passed to the secondary transmission mechanism E of inner edge 15, motor power is converted to left and right directions reciprocating power the starting of oscillation structure and will be passed to the shave reciprocating power transmission mechanism of sword 13 of center sword 17 and edge by the reciprocating power of this starting of oscillation structure conversion.Each structure below is described in detail in detail respectively.At first, power plant module M is described.

Among Fig. 7, power plant module M comprises: the starting of oscillation structure that the motor 31 of landscape configuration, motor outer cover 33, the one of accommodating motor 31 are installed on the reduction gearing mechanism D of motor outer cover 33 sides, assemble to motor outer cover 33 from motor 31 output shafts 32.Floating bracket 34 be fixed in motor outer cover 33 below.

Among Fig. 8, motor outer cover 33 comprises: almost accommodated whole motor 31 motor support body 38, blocking motor support body 38 opening supporter outer cover 39, be installed on the supporter outer cover 39, output shaft 32 done the annular support sealing gasket 41 of the sealing pad 40 of water proofing property sealing and hermetic motor supporter 38 and the connecting portion of supporter outer cover 39 etc.Motor support body 38 is made of band bottomless drum shape case, and 4 places are formed with the screw thread projection 42 that is used to connect supporter outer cover 39 and deceleration box 54 around its opening surface, and wall one side is formed with and connects projection 43 thereon.Below the central authorities of motor support body 38, have guidewire port 44.Draw the lead 45 that connects with motor 31 from this guidewire port 44, and be connected (referring to Fig. 7 and Fig. 9) with circuit board 26.

Reduction gearing mechanism D is made of planetary gears.In each figure of Figure 13 to 15, planetary gears comprises: be fixed in central gear 50 on motor 31 output shafts 32,3 planetary gears 51 with these central gear 50 engagements, axle support planetary gears 51 and the tooth rest 52 that makes it to rotate freely, have with the deceleration box 54 of the internal gear 53 of planet gear 51 engagements and be decelerated that 54 of casings support and the output shaft 55 of the rotary power of output gear wheel carrier 52 etc.

As shown in figure 14, tooth rest 52 comprises: be fixedly connected on the 2nd framework 52b on the 1st framework 52a, that be made of plastic plectane by the 1st framework 52a that constitutes at the circular metal plate that is fixed with output shaft 55 and 3 planet pins 60 about its plate face with screw 77.3 places on the 2nd framework 52b face relative with the 1st framework 52a are provided with the projection 78 of the connection usefulness of double as distance piece, and the planetary gear 51 that is disposed between these projections 78 supports and can freely turn round with planet pin 60.

Deceleration box 54 is by constituting at the improved plastics structural shape with the lid shape of faying face one side opening of supporter outer cover 39; Be formed with internal gear 53 within it on the periphery; 4 places are provided with screw thread projection 61 near its opening periphery; Cut formation one belt opening 62 at the center upper portion place of its perisporium, be used for driving belt 69 is drawn outside casing.About the lateral surface of deceleration box 54, form the perisporium 56 of delimiting Transmission Room 137 and connect projection 59.

As shown in figure 10, after the output shaft 55 that the tooth rest 52 of planetary gear 51 is housed is assemblied on the deceleration box 54 by axle bush 63, deceleration box 54 is connected in supporter outer cover 39, by motor support body 38, supporter outer cover 39 and deceleration box 54 threes being connected, just can and will constitute 1 power plant module with motor 31, motor outer cover 33, reduction gearing mechanism D in starting of oscillation described later with screw 64.The space that reduction gearing mechanism D is housed between deceleration box 54 and the supporter outer cover 39 is in the reduction chamber 57.The inner space of motor outer cover 33 and reduction chamber 57 with next door 58 separately, thereby be divided into separately independently space.The next door 58 of present embodiment is made of supporter outer cover 39 and sealing pad 40.

As shown in figure 15, accept the planetary gear 51 of the rotary power of central gear 50, on one side with central gear 50 reverse rotations (rotation), owing to mesh, shown in arrow P, on the direction identical, rotate (revolution) on one side with the direction of rotation of central gear 50 around central gear 50 with non-rotary internal gear 53.Though this revolution action is delivered to output shaft 55 by tooth rest 52, but the revolution that should revolve round the sun is proportional with the gear ratio of internal gear 53 with central gear 50, therefore, compares with the occasion of slowing down with a plurality of spur gears, only, just can obtain big speed reducing ratio by the simple structure of 3 kinds of gears 50,51,53.For example, when the driving revolution of motor 31 is 8000rpm, the revolution of output shaft 55 can be reduced to 2000rpm quickly, and correspondingly can improve driving torque greatly.

Below, the starting of oscillation structure is described.

Starting of oscillation structure is that the rotary power with motor 31 converts the reciprocating action of left and right directions to and is provided with.Among Figure 16 and 17, starting of oscillation structure comprises: be fixed in the guide plate 66 of supporter outer cover 39 sides, with the integrally formed driving cam 67 of central gear 50, be driven driven member 68 that cam 67 up and down reciprocatingly drives, the knee-action of driven member 68 is directly changed into about action the font of falling L driving belt (transmission body) 69 and bear the slide 70 that driving belt about 69 moves.

Guide plate 66 is by constituting as raw-material disc compression moulding part with stainless steel materials; Between the Connection Block 71 of pair of right and left mososeries, form the recessed spigot surface 72 (referring to Fig. 8) that driven member 68 is carried out slide-and-guide; On the top of spigot surface 72, form from about Connection Block 71 out of gear mesh elastic arms 73; At the mid portion of this elastic arm 73, forming the projection 74 of the tabular surface hold driving belt 69 and support that idle pulley 81 described later makes it can free rotating rotation wall 75.

Driven member 68 and slide 70 are made of improved plastics structural shape respectively, insert driving belt 69 fixing in their moulding.Driving belt 69 is made of the polyurethane system synchronous belt of strengthening with polyimides (toothed timing belt), therebetween the slip plane configuration of the state lower edge driven member 68 of part bending and slide 70.As shown in Figure 8, on driven member 68, be formed with the cam path 76 of the long oval shape of left and right directions, driving cam 67 cooperates with this cam path 76.

Carry out smoothly for the commutation action that makes driving belt 69, press the right angle with tumbler gear (interior guide way) 80 flank of tooth one side of the bend of driving belt 69 is made the commutation guiding, make to shift guiding with the outside of 81 pairs of bends of idle pulley (outer guide way).

Among Figure 17, tumbler gear 80 can turn round support freely by the axle 82 that is installed on the supporter outer cover 39, and its tooth is in frequent engagement with the tooth of transmission belt 69.In order to prevent its a part of guide plate 66 1 side dilatancies when driving belt 69 moves by the dextrorotation veer, guarantee driving belt 69 and tumbler gear 80 engagements, hold the tabular surface of driving belt 69 with the projection 74 of guide plate 66.

Idle pulley 81 is clamped between the rotation wall 75 and driving belt 69 sweeps of guide plate 66, and is external with line contact condition and driving belt 69.Under this assembled state, idle pulley 81 is by comprising the elasticity pushing driving belt 69 of the elastic arm 73 that rotates wall 75.Therefore, when the sweep of driving belt 69 moved back and forth along tumbler gear 80, idle pulley 81 was to the direction rotation identical with the moving direction of driving belt 69, the commutation of driving belt 69 moved smoothly carry out.In addition, connect the line at idle pulley 81 and tumbler gear 80 both centers, be positioned at the central authorities of the sweep of driving belt 69 substantially.

Among Fig. 8 and Figure 11, slide 70 has the horizontal than long main part 85 of left and right directions; Be fixed with drive pin 86 near inserting on the projection of centre setting in the above; Be connected with the back of main part 85 and projection, the actuating arm 87 of sword 13 shaves at integrally formed reciprocal driving edge.As shown in figure 17, because the top upper wall 88 by the headstock described later of slide 70 covers, so soft flocks can not enter the operating space of slide 70.Upper wall 88 also has the effect of limit slippage sheet 70 come-ups.

For horizontally slipping of slide 70 carried out smoothly, fixed guide body 90 on supporter main body 34 supports slide 70 by these guide way 90 guiding.As shown in Figure 8, guide way 90 is that the framework of H shape constitutes by the cross section of plastic shaping, has spigot surface 91, the outstanding a pair of cooperation footing 93 of limiting wall 92 and front and back of being located at spigot surface 91 front and back.By cooperating footing 93 to be matched with to be located at a pair of mounting groove 94 in top front and back of motor support body 38 and being adhesively fixed, guide way 90 becomes one with motor support body 38.Explanation in passing, if with guide way 90 and bulky motor support body 38 when one-body molded, the pore that produces during because of moulding etc. are difficult to make spigot surface 91 grades to reach enough plane precisions.But, as present embodiment, when guide way 90 forms independently part, then can prevent to produce pore, the plane precision of spigot surface 91 is increased to enough precision.

Starting of oscillation structure according to said structure, because action about can leaning on driving belt 69 that the knee-action of driven member 68 is directly changed into, back and forth drive slide 70 by left and right directions, so compare with existing similar action switching mechanism, not only can simplify the starting of oscillation structure on the whole, and unnecessary motion space of guaranteeing peripheral part.Therefore, but the parts of centralized configuration starting of oscillation structure peripheral part can be realized razor head 2 miniaturizations.The power plant module M that comprises starting of oscillation structure is by being assembled into from downside on the head bracket 103 described later, with screw 95 with about connection projection 43 and 59 be connected to sidewall 111, (referring to Fig. 9 and Figure 16) then can become one with head bracket 103.

Below, floating structure is described.

Whole razor head 2 can be supported by main case 1 comprising on all around, up and down all directions omni-directionally-floatedly.Its details is as Fig. 9 and shown in Figure 11, below motor outer cover 33, be fixed with the floating bracket 34 of the tubular of top and bottom opening, after the cooperation pin 97 (referring to Figure 25) that makes be arranged on floating bracket 34 highlightedly four jiaos outsides cooperates with the cooperation pawl 28 of inner support 25, compress spiral floating spring 98 and come floating ground to support whole razor head 2 by being disposed at pair of right and left between inner support 25 and the floating bracket 34.Like this, the unsteady supporting location of razor head 2 is in the below of motor 31.Floating bracket 34, the state that is embedded in guidewire port 44 in addition is connected with motor support body 38; From the lead 45 that guidewire port 44 is drawn, be connected in the socket of circuit board 26 1 sides by space in the tube.

The unsteady action of razor head 2 is shown in Figure 18 and Figure 19.Razor head 2, main case 1 in the amount of left and right directions swing S1, as shown in figure 19, in the amount of fore-and-aft direction swing S2, and as shown in figure 19, in the amount of above-below direction swing S3, and can be swung in a plurality of directions shown in the imaginary line of Figure 18 simultaneously relatively.Like this, when razor head 2 can be supported omni-directionally-floatedly, can make the posture of razor head 2 corresponding to the variation of skin surfaces such as lower jaw or cheek, follow sleekly and adapt to, and, can alleviate razor head 2 and excessively be pushed partly, make its contact condition become soft to skin.In addition, razor head 2 from the posture of swing when getting back to neutral posture recovery operation power and keep the power of razor head 2 in neutral posture, though mainly the elastic force by floating spring 98 obtains, but, the elastic force of casing sealing pad 100 also has the effect that auxiliary razor head 2 recovers action, also has the effect of razor head 2 in neutral posture of keeping.

For the unsteady action that do not hinder razor head 2 and make electrical part unit 3 waterproof, between the barrel 99 with following and main case 1 inner face of casing sealing pad 100 hermetic motor outer covers 33.Its details such as Fig. 9 and shown in Figure 11, clamp the inner peripheral of casing sealing pad 100 and be fixed between the following and floating bracket 34 of motor support body 38, after the outer peripheral edges of casing sealing pad 100 being installed on the sealing frame 29 of inner support 25 upper ends, the outside of the outer peripheral edges of casing sealing pad 100 is connected airtight in the inner face of barrel 99.Casing sealing pad 100 face shapings as shown in figure 25.

Below, the head structure that shakes is described.

Fig. 6, among each figure of Fig. 7 and Figure 20, the head structure that shakes comprises: but be fixedly installed in the top head bracket 103 of motor outer cover 33, supported by head bracket 103 and oscillator 107 etc. that the swing frame 104 of swing and inner edge carriage 105, inner blade unit 106, the dismounting that can install from the mode of front and back dismounting respectively with relative inner edge carriage 105 freely are installed on the outside supporter 12 on the inner edge carriage 105 and are contained in the inside of inner edge carriage 105.

Head bracket 103, possess to the shell portion 110 of under shed and uprightly be located at shell portion 110 above side walls 111, but with about sidewall 111 swing earth's axis swinging in the cross rest frames 104.Therefore, the upper wall of shell portion 110 forms along the recessed circular arc of the swinging track of swing frame 104.The swing arm 114 of upper end band swing projection 113 uprightly is located at the top left and right sides of the swing frame 104 that forms four jiaos of shaped as frames, with sidewall 111 can before and after the earth's axis swinging in the cross rest projection 113 that freely swings.Like this, as shown in Figure 21, except head bracket 103,, only when pressing lock handle 18, be in the state that to swing though swing frame 104 and inner edge carriage 105 wait each parts all can swing at fore-and-aft direction.Level axle 115 and whole level gear 116 are assembled in swing projection 113 (referring to Fig. 9) eventually.

As shown in figure 16, by configuration oscillator 107 in the frame opening of swing frame 104, make the hold-down arm 108 of its both sides be matched with the opening perimeter wall, thereby oscillator 107 is become one with swing frame 104.The drive pin 86 of previously described slide 70 cooperates with being located at oscillator 107 following mating grooves 118, and reciprocating power is passed to oscillator 107.Be used to cooperate the engagement arm 119 of catching the inner blade unit 106 that is installed on the inner edge carriage 105 be disposed at swing frame 104 about, pressured contract coil spring 120 upwards pushing form and cooperate.As shown in figure 22, be formed with cooperation pawl 121 upwards in the front and back end of engagement arm 119.

Inner edge carriage 105 is installed on swing frame 104 from top side cooperation, and the top of head bracket 103 got up together with sidewall 111 covers.In view of the above, the driving shaft 109 that has only oscillator 107 protrudes in the top from the upper wall opening part of inner edge carriage 105.Seal with liner 122 between inner edge carriage 105 openings and the driving shaft 109.Aforesaid lock handle 18 and unlock button 19 are assembled in the left and right sides sidewall of inner edge carriage 105.

Among Figure 11, outside supporter 12 structurally is divided into: the shell 12a of the inner casing 12b of a pair of outside 16 and center sword 17 and support inner casing 12b before and after supporting.By with respect to shell 12a, cooperate installation inner casing 12b from a following side, inside and outside shell 12b, 12a are become one.Outside 16 is made of the sheet metal that bending remains reverse U shape, forms one group of cancellous sword hole on its plate face.Be installed at outside supporter 12 under the state of razor head 2, the front-back of inner edge carriage 105 is hidden by inside and outside shell 12b, 12a.

Among Figure 20 and Figure 23, inner blade unit 106 comprises: about long partially H font inner edge support 125, supported by 125 on inner edge support and inner edge 15 that can rotate freely around transverse axis and the inner edge gear 126 that is fixed in inner edge 15 sides.About the lower end, both sides of inner edge support 125, relatively be provided with and cooperate rail 127,, can make inner blade unit 106 become one with inner edge carriage 105 by cooperating rail 127 insertions to be matched with to be formed on the cooperation wall 128 about inner edge carriage 105 top.The structure of inner edge 15 is: bury underground on the periphery of cylindrical plastic system supporter and fix one group of metal blade, and make it form spirality.

Under this installment state, as shown in figure 22, because cooperating, the cooperation pawl 121 of engagement arm 119 catches the insertion terminal part that cooperates rail 127, so inner blade unit 106 can not separate with inner edge carriage 105.In addition, the inner edge gear 126 of front and back meshes with whole level gear 116 respectively.Between whole level gear 116 and inner edge gear 126, the revolution of level axle 115 omits and increases to some extent (account for total reduction ratio 5%) eventually.In order to change inner edge 15, can extract inner blade unit 106 from inner edge carriage 105, at this moment, while can descend, can isolate whole inner blade unit 106 from inner edge carriage 105 by such operation by cooperating the opposite inner edge support 125 of extracting of pawl 121 with direction of insertion.

Below, secondary transmission mechanism E is described.

Among each figure of Fig. 7, Figure 24, secondary transmission mechanism E comprises: be pressed into the drive pulley 132 of the output shaft 55 that is fixed in reduction gearing mechanism D, the driven pulley 133 that is fixed in whole grade of axle 115 and coiling and be contained in the endless-belt (synchronous belt) 135 on two belt pulleys 132 and 133, the regulating wheel 136 that absorption endless-belt 135 relaxes and the Transmission Room 137 of accommodating these formation parts.Endless-belt 135 is made of the synchronous belt of the polyurethane system of strengthening with polyimide fiber.

The number of teeth of driven pulley 133 is established more biggerly than the number of teeth of drive pulley 132, with further with the dynamic retarding of output shaft.In the middle of the driving revolution and the total reduction ratio (4 to 1) between the inner edge 15 of motor 31, the rate of deceleration of reduction gearing mechanism D accounts for 90%, and the rate of deceleration of secondary transmission mechanism E accounts for 10%.

As mentioned above, be fixed in output shaft 55 by drive pulley 132 is pressed into, it is moving to limit tooth rest 52 string in the axial direction with drive pulley 132, the noise of generation in the time of can reducing tooth rest 52 and contact with reduction box 54.As shown in Figure 7, Transmission Room 137 be formed on reduction box 54 lateral surface perisporium 56 and be formed at head bracket 103 sidewall 111 upper perimeter wall 138 and be fixed in 139,140 divisions of outer cover up and down on these surrounding walls 56 and 138, by whole secondary transmission mechanism E is contained in its inside, leak to prevent the transmission noise.Further, the outside of Transmission Room 137 is covered by the shell portion 110 side walls of head bracket 103 and the sidewall of inner edge carriage 105, thereby prevents that the transmission noise from leaking from razor head 2.

Like this, when being contained in secondary transmission mechanism E in the Transmission Room 137, the transmission noise that reduction gearing mechanism D is produced is covered by perisporium 56,138 and outer cover 139,140, can prevent that the transmission noise that reduction gearing mechanism D is produced from directly leaking, correspondingly reduce the external noise level of electric shaver.

Below, the reciprocating power transmission mechanism is described.

Lean on starting of oscillation to construct the reciprocating power of the left and right directions that converts to, as shown in figure 11, the left and right sides reciprocating action of drive pin 86 is passed to center sword 17 by oscillator 107.Further, it is by actuating arm 87 (driving body) be located at the shave transmission arm 146 inner face, that swing around axle 145 of sword unit of edge and be passed to the edge sword 13 that shaves.

Among Figure 11, the edge sword 13 that shaves comprises: be fixed on edge shave the broach shape fixed blade 148 of upper end inner face of sword case 147 and the active blade 149 of the broach shape that relative fixed sword 148 horizontally slips; It is mainly used in to shear and becomes mildewed or frizzle.Be formed with in the rearward end of actuating arm 87 and operate ditch 151 longitudinally, the driven protuberance 152 of the lower end by being located at transmission arm 146 cooperates with this operation ditch 151, can make actuating arm 87 reciprocally swingings, thus can about back and forth drive active blade 149.As shown in Figure 3, when slip handle 14 was in position shown in the solid line, driven protuberance 152 did not cooperate with operation ditch 151, so active blade 149 stop.When this state operation down certainly, promptly when being depressed into position shown in the imaginary line on the slip handle 14, then as shown in figure 11, driven protuberance 152 biconditional operation ditches 151 cooperate, whole transmission arm 146 swings around axle 145, therefore can drive active blade 149 and synchronously move back and forth with slide 70.

Among Figure 11 and Figure 16, center sword 17 comprises: the cross section of being fixed in outside supporter 3 is the fixedly outside 156 of reverse U shape and is disposed at the fixedly movable inner edge 157 of the inner face of outside 156; By driving shaft about the 109 reciprocal driving activity inner edges 157 by oscillator 107, the main shearing become mildewed or frizzle.Fixedly outside 156 is made of the cutting blade of the sword groove that forms the ditch shape respectively with movable inner edge 157.Inner face at movable inner edge 157 is fixed with plastic brace 158, cooperates with the ditch 159 of being connected on being located at brace 158 by driving shaft 109, can move back and forth synchronously with slide 70 by driving activity inner edge 157.

Below, the structure of safety switch is described.

Fig. 9, Figure 25 and Figure 26 represent the structure of safety switch.The structure of safety switch under the state that outside supporter 12 is pulled down from head bracket 103, switches to the OFF state with the supply line of motor 31, has then limited inner edge 15 and has been driven in rotation.The details of safety switch structure comprises as shown in figure 26: can freely slide up and down to be assembled in swing frame 104 inside driven disc 161, be located at motor outer cover 33 on every side, with the upper and lower displacement of driven disc 161 be sent to safety switch 162 relay ring 163, to relay ring 163 top inner faces be applied with thrust compression coil spring 164, be assembled in the safety switch 162 etc. of the side of floating bracket 34.

As shown in figure 27, driven disc 161 is made of the improved plastics structural shape of inverted T-shape, have by the follower 165 of 12 times press operations of outside supporter across front and back end above the arm of the inside of swing frame 104 before and after it, middle position has the operating portion 166 of partial arc shape below above-mentioned arm.As shown in figure 26, follower 165 protrudes in front-back from the perforate 168 that is located on the inner edge carriage 105.Therefore, when outside supporter 12 was assembled into razor head 2, the elastic force that whole driven disc 161 overcomes spring 164 was operated and presses down.The reason that operating portion 166 forms the partial arc shape is: even if razor head 2 is in to the front or rear state that fascinates, under the head status of promptly shaking, also can keep driven disc 161 and be in contact condition, can detect outside supporter 12 and be pulled down from razor head 2 with relay ring 12.

The structure of relay ring 163 comprises preceding ring 163a a pair of from the front and back of front and back clamping motor outer cover 33 and back ring 163b, and the preceding ring 163a that forms the semicircle shaped as frame is fixedlyed connected with the pin 163c that is located on the ring 163b of back mutually with the upper and lower side of back ring 163b.Because the internal diameter of front and back two ring 163a and 163b size is up and down made greatlyyer than the size up and down of motor outer cover 33, thus relay ring 163 can have no to hinder moving up and down on every side at motor outer cover 33.Move up and down in order under stable state, to carry out this, as shown in figure 28, come guide support pin 112c with the guiding ditch 169 on the projection about being located at above the motor outer cover 33.Above the 112b, the sidewall 170 of restriction operating portion 166 move left and right is set at the back ring that contacts with operating portion 166.

As shown in figure 27, outside supporter 12 by the state of pulling down from razor head 2 under, whole relay ring 163 is by spring 164 jack-up.Under this state, the operation projection 171 that is located at relay ring 163 lower ends breaks away from safety switch 162, so safety switch 162 sends the ON signal to control circuit.When being installed on the razor head 2,, carry out the OFF operation to outside supporter 12 by the 171 pairs of safety switches of operation projection 162 that are located at its lower end by 161 times press operation relay rings 163 of driven disc.In addition, because safety switch 162 is configured in the inside of casing sealing pad 100, so operation projection 171 can be carried out break-make (ON or OFF) operation to safety switch 162 by the upper wall of casing sealing pad 100.

Figure 29 shows the basic structure of control circuit.In the figure, 176 is control part (CPU), the 177 load testing circuits for on-load adjustment resistance.The input signal that control part 176 receives from the outside, the running status of control motor 31, the lighting lamp state of switching display 10,11.One presses release knob 5 during use, and control part 176 promptly receives the signal from main switch, starter 31.Under this state, by by selecting button 7, the operational mode of electric shaver can be chosen to be one of following 4 kinds: inductive mode, moderate pattern, powerful pattern and turbine pattern.

Inductive mode is a kind ofly can change the revolution pattern automatically, can change powerful motor revolution (8300rpm) and moderate motor revolution (7800rpm) automatically corresponding to beard amount (load of motor 31).Moderate pattern is the pattern that a kind of motor 31 revolutions are fixed on moderate revolution (7800rpm).Powerful pattern is the pattern that a kind of motor 31 revolutions are fixed on powerful revolution (8300rpm).In addition, the turbine pattern is that a kind of revolution is fixed on the pattern than the motor revolution also high (reaching 8800rpm) of powerful pattern.11 bright lamps of ability when inductive mode of sense light, sense light 11 extinguishes under other patterns.Pattern display lamp 10, bright often at power connection, but its color has 3 kinds, because of pattern different.Under moderate pattern, make blueness be light blue with green LED is luminous; Under powerful pattern, only make the bright blueness that is of blue LED; Under the turbine pattern, make that red and green LED is bright to send bisque light.Under inductive mode, along with revolution automaticallyes switch and variable color, that is, bright with the same lamp of moderate pattern when moderate revolution (7800rpm) is light blue; Bright with the same lamp of powerful pattern when powerful revolution (8300rpm) is blue.

Under inductive mode, corresponding to the shear load of beard, change the outer voltage waveform that is added on motor 31, automatically switch to motor 31 outputs moderate or powerful.Particularly, under inductive mode, when connecting main switch (release knob) 5, export driving pulse, CD-ROM drive motor 31 to the 2nd switch 179 (transistor, FET etc.) of connect with load testing circuit 177.At this moment, utilize load testing circuit 177 to take out the voltage that increases and decreases pro rata with motor current, when this detection voltage that is removed is higher than preset reference voltage, when many and load motor 31 of the beard amount that promptly should shear is high, provide the driving pulse of long dutycycle turn-on time to the 2nd switch 179, the revolution of motor 31 is increased to powerful revolution (8300rpm).And when detecting voltage and be lower than reference voltage, when promptly beard amount load few, motor 31 is low, provide the driving pulse of short dutycycle turn-on time to the 2nd switch 179, the revolution of motor 31 is reduced to moderate revolution (7800rpm).By this control, can accomplish suitably to shave corresponding to the beard amount.If connecting release knob 5 backs uses when selecting button 7 to select the turbine pattern, will can obtain revolution (8800rpm) maximum in each pattern to the 1st switch 178 (for transistor, FET etc.) output continuous signal for load testing circuit 177 and 179 bypasses of the 2nd switch are provided with.

Though it is not shown in Figure 29, but in fact also has a battery allowance display lamp 9, it comprises adjoining each other and is configured in a plurality of LED on the circuit board 26 and is located on the display board of casing front, shows the digital display of surplus, its variation corresponding to the voltage of two batteries 27 makes the corresponding bright lamp of LED, can show the roughly situation of battery allowance basically quantitatively.

Control part 176 when the safety switch 162 that is in operation switches to the ON state, stops the 1st switch 178 and 179 on the 2nd switch are driven signal, stops to provide drive current to motor 31.Like this, when exposing inner edge 15,,, can eliminate fear so can prevent to hurt sb.'s feelings because of inner edge 15 rotations because inner edge 15 must stall when pulling down outside supporter 12.When the driving of motor 31 stopped, if the charging plug of charging adapter is inserted charging socket 23, then charge switch 180 became on-state, and 2 batteries 27 that main case 1 includes are recharged.Charging voltage reaches assigned voltage or charging plug when being taken away, and charge switch 180 becomes dissengaged positions, and charging stops.During charging, rechargeable lamp 8 bright lamps.

The power plant module M that possesses said structure for example can be used as power source, by the electric shaver that the use number of inner edge 15 has nothing in common with each other general.Specifically as shown in figure 30, in razor head 2 that possesses 2 inner edges 15 and the razor head 2A that only possesses 1 inner edge 15, but general dynamic module M and secondary transmission mechanism E manufacture and design step and cost so can save.In addition, if from power plant module M, save starting of oscillation structure, then can constitute and save the shave electric shaver of sword and center sword of edge.Necessary, can also constitute the shave electric shaver of sword or center sword of a belt edge.

Figure 31 represents power plant module M of the present invention is applied to the embodiment of the electric shaver of band rotation inner edge (inner edge).Among Figure 31 (a), by secondary transmission mechanism E the rotary power of output shaft 55 is passed to the rotation inner edge 15 that can rotate around transverse axis, in view of the above, the outside 16 of rotation inner edge 15 mating part dome shape is sheared beard.Among Figure 31 (b), the output shaft by power plant module M, be rotation inner edge 15 rotations that output shaft 55 direct drivings can be rotated around the longitudinal axis, make the outside 16 of its mating part dome shape shear beard.At this, every with the same parts of above-mentioned embodiment, all use identical label, and omit its explanation.Following examples are handled too.By present embodiment as can be known: it is different kinds of electric razors that the fast M of power mould can be used as power source.

Figure 32 represents another embodiment of the floating structure of razor head.At this, M is supported to power plant module, make its relatively main case 1 in all around and above-below direction float in all directions.But, be different from the previous embodiment part and be: allow in front and back and scope that left and right directions fascinates, only limit to the side of left and right directions of power plant module M and a side of fore-and-aft direction.That is, razor head 2 is in non-fascinating during state, and power plant module M is in the state of representing with solid line among Figure 32.

Except that the above embodiments, reduction gearing mechanism D also can be made of the gear reduction beyond turbine mechanism, the planetary gears.Also have, when constituting secondary transmission mechanism E with flexible transmission mechanism, can handle output shaft 55 and the variation of the axle base between the level axle 115 eventually at an easy rate, yet will driving belt as the transmission key element, the longitudinal axis that for example also available two ends up and down dispose bevel gear with the deceleration transmission of power to level axle 115 eventually.In addition, also available one-shot battery replaces secondary cell 27 as power supply.

Transmission body 69, also available by constituting with the integrally formed plastic toothed timing belt of driven member 68 and slide 70.As required, the plastic skin of also available steel band or insertion steel band brings and forms transmission body 69.The interior guide way 80 of commutation guiding driving belt 58 also can be the same with outer guide way 81, forms with roller.Outer guide way 81 can dispose a plurality of.

Claims (18)

1. an electric shaver is provided with razor head (2) on the top of main case (1), has the inner edge (15) of rotation and the motor (31) of driving inner edge (15) on razor head (2); Side at motor (31) disposes the reduction gearing mechanism D that motor power is slowed down; It is characterized in that: the reduction gearing mechanism D of unit partsization is fixed in a side of motor (31), and motor (31) and reduction gearing mechanism D constitute a power plant module M.

2. by the described electric shaver of claim 1, it is characterized in that: dispose the transmission of power that to slow down through reduction gearing mechanism D secondary transmission mechanism E at the lateral surface of reduction gearing mechanism D to inner edge (15).

3. by the described electric shaver of claim 1, it is characterized in that: the starting of oscillation structure that the rotary power of motor (31) is converted to reciprocating power is assembled among the power plant module M; The output shaft (55) of the output shaft (32) of motor (31) and reduction gearing mechanism D both one of on be fixed with the actuating arm (67) that constitutes the starting of oscillation structure.

4. by claim 1 or 2 or 3 described electric shavers, it is characterized in that: in delimitation is formed at the reduction chamber (57) of motor (31) one sides, accommodate reduction gearing mechanism D.

5. by the described electric shaver of claim 4, it is characterized in that: motor (31) fixedly is contained in the motor outer cover (33), and its output shaft (32) protrudes in the reduction chamber (57); Reduction chamber (57) is divided into motor outer cover (33) and is fixed in the deceleration box (54) of the side of motor outer cover (33); The inner space of motor outer cover (33) and reduction chamber (57) with next door (58) separately, thereby be divided into separately independently space.

6. by claim 1 or 2 or 3 described electric shavers, it is characterized in that reduction gearing mechanism D is made of planetary gears; This planetary gears comprises: the tooth rest (52) that is fixed in the central gear (50) of the output shaft (32) of motor (31), can rotates freely with this central gear (50) planet gear meshed (51), axle support planetary gears (51) and making it, have with the deceleration box (54) of the internal gear (53) of planetary gear (51) engagement and be decelerated the support of casing (54) axle and the output shaft (55) of the rotary power of output gear wheel carrier (52).

7. by claim 2 or 3 described electric shavers, it is characterized in that: motor (31) landscape configuration is in the bottom of razor head (2); Secondary transmission mechanism E comprises: the drive pulley (132) that is disposed at the bottom of razor head (2) and top and driven pulley (133) and be wound on endless-belt (135) on two belt pulleys (132,133).

8. by the described electric shaver of claim 7, it is characterized in that: the drive pulley of secondary transmission mechanism E (132) is fixed on the output shaft (55) that protrudes in deceleration box (54) outside, and is moving at axial string with drive pulley (132) limiting gear frame (52).

9. by claim 2 or 3 described electric shavers, it is characterized in that: secondary transmission mechanism E is housed in the Transmission Room (137) of delimiting a side that is formed at razor head (2).

10. by claim 1,2 or 3 described electric shavers, it is characterized in that: the rate of deceleration of reduction gearing mechanism D is set to the total reduction ratio between the motor (31) and inner edge (15) nearly.

11. by the described electric shaver of claim 7, it is characterized in that: razor head (2) is supported by main case 1, can comprise all around, float on all directions comprehensive up and down; The unsteady Support Position of razor head (2) is arranged at the below of motor (31).

12. by the described electric shaver of claim 5, it is characterized in that: motor outer cover (33) is made of the supporter outer cover (39) of the opening of the motor support body (38) of the tubular of almost having accommodated whole motor (31) and this motor support body (38) of shutoff; The guidewire port (44) of lead (45) below the central authorities that are opened on motor support body (38) that is connected in motor (31) drawn, and the circuit board (26) interior with being contained in main case (1) is connected.

13. by the described electric shaver of claim 11, it is characterized in that: the output shaft (32) of motor (31) that protrudes in the side of motor outer cover (33) is made waterproof sealing with the sealing pad (40) that is installed on supporter outer cover (39); With casing sealing pad (100) sealing, make electrical part unit (3) waterproof in the main case (1) between the inner face of the following and main case (1) of motor outer cover (33).

14. by the described electric shaver of claim 3, it is characterized in that: possess by what the reciprocating power with the conversion of starting of oscillation structure back and forth drove and move back and forth (13,17); This starting of oscillation structure comprises: be fixed in the output shaft (32) of motor (31) driving cam (67), be driven driven member (68) that cam (67) up and down reciprocatingly drives, be disposed at motor (31) around and by can about with being free to slide the guiding support slide (70) and be connected driven member (68) and the transmission body (69) of slide (70); This transmission body (69), the position is under the case of bending therebetween, along the slip plane configuration of driven member (68) with slide (70); Action about the knee-action of driven member (68) is directly changed into by transmission body (69), and driving slide (70) moves back and forth along left and right directions.

15. by the described electric shaver of claim 14, it is characterized in that: motor (31) fixedly is contained in the motor outer cover (33); Slide (70) by the top guide way (90) that is fixed in motor outer cover (33) can about with being free to slide guiding support.

16., it is characterized in that: inside and outside the bend of transmission body (69), shifted guiding by interior guide way (80) and outer guide way (81) by the described electric shaver of claim 14.

17. by the described electric shaver of claim 14, it is characterized in that: the guide plate 66 that supports driven member (68) is fixed on the motor outer cover (33) but easy on and off leads movably; The outer guide way (81) that is made of roller is freely supported by guide plate (66) revolution, is external in the bend of transmission body (69) with the line contact condition.

18. by the described electric shaver of claim 14, it is characterized in that: transmission body (69) forms with toothed timing belt; Interior guide way (80) with the revolution of the land of same transmission body (69) engagement freely gear constitute.

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