JP2011200602A - Electric shaver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric shaver for eliminating the shaving leftover of lying beard and allowing the beard to be shaved shorter.SOLUTION: The reciprocating electric shaver includes a plurality of screen blades arranged in parallel and cutters to have contact with the inner surfaces of the respective screen blades and to be driven to reciprocate in the longitudinal direction of the screen blades. The electric shaver includes screen blade driving means for vibrating at least one of the screen blades in a direction along the arrangement surfaces of the screen blades and also in a direction C to be obliquely crossed with the reciprocating direction B of the cutters.

Description

  The present invention relates to an electric razor, and more particularly to a reciprocating electric razor.

  In a reciprocating electric razor that reciprocates the inner blade in the longitudinal direction of the outer blade, Patent Document 1 discloses that the outer blade is also slightly vibrated in order to increase the efficiency of introducing and cutting hairs (ribs). This causes the outer blade to vibrate slightly in the same direction as the reciprocating movement of the inner blade. When the shaver is shaved while moving the electric razor in a direction perpendicular to the reciprocating direction of the inner blade with the outer blade in contact with the skin. The heel lying in the reciprocating direction of the inner blade is caused by the fine vibration of the outer blade and introduced into the outer blade, and is cut between the outer blade and the inner blade.

  Moreover, in the said patent document 1, in the thing provided with the some outer blade arranged in parallel parallel, it is also shown that an adjacent outer blade vibrates mutually in an opposite phase.

JP 2007-029123 A

  In the one disclosed in Patent Document 1, since the outer blade is vibrated in the reciprocating direction of the inner blade, it is possible to cut by causing a wrinkle lying in the reciprocating direction of the inner blade. However, since the wrinkle introduced from the outer blade edge is sandwiched between the edge of the outer blade edge and the inner blade, the vibration frequency of the outer blade and the vibration frequency of the inner blade If there is a difference between the outer blade and the outer blade, there will be a state where the inner blade and outer blade are moving in the same direction. Because the pressing force in the direction is weakened, it cannot be shaved short.

  This invention is made | formed in view of such a point, and makes it a subject to provide the electric razor which can be shaved up shortly while there is no shave residue of the sleeping heel.

  The present invention is a reciprocating electric shaver comprising a plurality of outer blades arranged in parallel and an inner blade that is in contact with the inner surface of each outer blade and is driven to reciprocate in the longitudinal direction of the outer blade. It is characterized in that it has outer blade drive means for vibrating the blade in a direction along the surface where the outer blades are lined up and in a direction obliquely intersecting with the reciprocating direction of the inner blade.

  When the outer blade driving means vibrates the plurality of outer blades in the opposite phase, the plurality of outer blades in contact with the skin are more effective in causing wrinkles.

  If the outer blade driving means has an angle adjusting section that changes the reciprocating direction of the outer blade, introduction according to the ridge can be performed.

  Even if the outer blade driving means can change the vibration frequency or the vibration stroke of the outer blade, it can be introduced in accordance with the heel.

  The outer blade driving means has a slide plate that holds the outer blade, and a fixed base that allows the slide plate to slide in a direction along the surface where the outer blades are aligned and obliquely intersecting the reciprocating direction of the inner blade. If the outer blade vibrates with the reciprocation of the inner blade in contact with the inner surface, the outer blade can be driven using the movement of the inner blade.

  If a spring that resonates the vibration of the outer blade is provided, stable vibration of the outer blade can be easily obtained.

  The reciprocating source of the inner blade is a linear vibration motor having a stator and a mover, and the input current of the linear vibration motor is obtained by superposing the outer blade vibration frequency on the vibration frequency of the inner blade. The vibration of the outer blade can be further stabilized.

  In the present invention, in order to vibrate the outer blade in a direction along the surface where the outer blades are lined up and in a direction obliquely intersecting with the reciprocating direction of the inner blade, the performance of introducing the sleeping heel is improved and the shave remains. In addition to being able to reduce, it can be shaved short. In addition, when all the outer blades are not vibrated, the vibrating outer blades and the non-vibrating outer blades are close to or away from each other, and the above movement of both outer blades in contact with the skin is effective for causing wrinkles. In order to work, the shavings can be further reduced.

It is a perspective view of an example of an embodiment of the invention. It is an exploded perspective view same as the above. It is a schematic plan view which shows operation | movement same as the above. It is a perspective view of an example of other embodiments. It is an exploded perspective view same as the above. It is a perspective view of the other example same as the above. It is a time chart of an input current same as the above.

  The present invention will be described in detail with reference to the drawings if it is described in detail based on an example of an embodiment. 1 to 3 show a reciprocating electric razor 1 according to the first embodiment, which is composed of a blade head block 2 for shaving and a grip block 3 for gripping with a hand. Incorporates a battery, a switch, and the like as a power source.

  The blade head block 2 includes a head case 4 in which a linear vibration motor 5 having a stator and a mover supported so as to be reciprocally movable is housed, and a plurality of outer blades 8 a disposed on the upper portion of the head case 4. , 8b, 8c, inner blades 7a, 7b, 7c sliding back and forth on the inner surfaces of these outer blades 8a, 8b, 8c, holding frames 13, 14, and covers 26, 26, which are parallel here. Out of the three outer blades 8a, 8b and 8c arranged in parallel, the outer blades 8a and 8c located outside are net blades having an arched cross section, and the outer blade 8b located in the center is a flat plate-shaped slit blade for shaving. It is formed as. The outer blades 8a and 8c, which are net blades, are held by the blade mounting frame 10, respectively, and the outer blade 8b, which is a slit blade, is held by holding members 11 at both ends. The cover 26 covers the peripheral portions of the outer blades 8a, 8c and the slit outer blade 8b with the shaved portions exposed to the outside.

  The inner blades 7a, 7c corresponding to the outer blades 8a, 8c and the inner blade 7b corresponding to the outer blade 8b are all driven to reciprocate in the longitudinal direction of the outer blades 8a, 8b, 8c by the linear vibration motor 5. However, of the output units 16 and 16 provided in the two movable elements that reciprocate in the opposite phase of the linear vibration motor 5, the inner blade 7 a is provided in one output unit 16 and the other output unit. The inner blade 7 c is coupled to the inner blade 16, and the driver 19 having a projection 19 a that engages with the inner blade 7 b is coupled to the other output portion 16. The inner blades 7a and 7c are pressed against the inner surfaces of the outer blades 8a and 8c by the spring force of the spring 17 interposed between the output portion 16 and the inner blades 7a and 7c. Is pressed against the inner surface of the outer blade 8b by the spring force of the spring 12 interposed therebetween.

  A horizontally-long rectangular frame-shaped blade holding frame 13 arranged on the upper portion of the head case 4 holds the two blades, ie, the outer blades 8a and 8c, independently of each other so as to be floatable. The holding frame 14 having a straight shape that is positioned in the position holds the outer blade 8b, which is a slit blade, in a floatable manner. As shown in FIG. 3, these holding frames 13, 14 are provided with guide pins 131, 141 that respectively engage with groove-shaped slide guides 130, 140 formed on the upper surface of the head case 4. It is slidable in the direction along the guides 130 and 140.

  Here, the groove-shaped slide guides 130 and 140 are arranged in the direction along the surface where the outer blades are arranged and in the longitudinal direction of the outer blades 8a, 8b and 8c (reciprocating direction of the inner blades 7a, 7b and 7c) B and The outer blades 8a, 8b, and 8c are formed so as to extend in a direction C that intersects both directions A.

  A small electric motor 22 is accommodated at one upper end of the head case 4. A gear 23 is attached to the output shaft of the electric motor 22, and the gear 23 supports the head case 4. A gear 24 that is rotatably supported by a shaft is engaged. Both gears 23 and 24 have the same size, and eccentric pins 23a and 24a are respectively fixed at positions away from the center of rotation.

  The holding frame 13 is provided with an extending portion 13a extending in the direction of the gear 24, and an elongated hole 13b that engages with the eccentric pin 24a of the gear 24 is formed in the extending portion 13a. Further, the blade holding frame 14 is provided with an extending portion 14a extending in the direction of the gear 23, and an elongated hole 14b that engages with the eccentric pin 23a of the gear 23 is formed in the extending portion 14a.

  When the linear vibration motor 5 reciprocates the inner blades 7a and 7c via the output unit 16, the wrinkles introduced into the outer blades 8a and 8c are cut by the inner blades 7a and 7c, and at the same time the output unit The inner blade 7b is reciprocated from 16 through the driver 19, and the scissors introduced into the slit outer blade 8b are cut by the slit inner blade 7b.

  Further, when the gears 23 and 24 are reversely rotated by driving the electric motor 22, the eccentric pins 23 a and 24 a rotate eccentrically, so that the holding frames 13 and 14 reciprocate in the direction along the slide guides 130 and 140. As described above, the longitudinal directions of the slide guides 130 and 140 are both the reciprocating direction B of the inner blades 7a, 7b, and 7c and the direction A in which the outer blades 8a, 8b, and 8c are arranged. Since the outer blades 8a, 8b, and 8c extend in the intersecting direction C, the outer blades 8a, 8b, and 8c reciprocate in the C direction in the plane where they are arranged.

  Due to the vibrations of the outer blades 8a, 8b, 8c, the scissors lying in the reciprocating direction of the inner blades 7a, 7b, 7c, the shaving direction (shaving the scissors perpendicular to the reciprocating direction of the inner blades 7a, 7b, 7c) Therefore, any of the wrinkles sleeping in the direction of moving the electric razor) can be raised and introduced into the outer blades 8a, 8b, 8c, and cut by the inner blades 7a, 7b, 7c.

  Incidentally, wrinkles are caused by the vibration of the outer blades 8a, 8b, 8c for the following reason. That is, with the reciprocal vibration of the outer blades 8a, 8b, and 8c by the electric motor 22, the skin portion of the skin that is in contact with the outer blades 8a, 8b, and 8c is pulled. At this time, the dermis part near the hair root of the eyelid is less likely to be pulled than the epidermis part, and the amount of movement between the epidermis part and the dermis part can be different. When the epidermis part is pulled in the direction opposite to the sleeping direction of the coffin, only the epidermis part is displaced and the coffin is squeezed out from the epidermis part.

  Since the vibration direction of the outer blades 8a, 8b, 8c is different from the reciprocating direction B of the inner blades 7a, 7b, 7c, when the outer blades 8a, 8b, 8c vibrate in the direction C, The vibrating inner blades 7a, 7b, 7c are swung in the A direction orthogonal to the B direction, which is connected to the connecting portion between the output portions 16, 16 of the linear vibration motor 5 and the inner blades 7a, 7b, 7c. There is no problem because it is within the range of allowed play.

  Further, since the vibration direction C of the outer blades 8a, 8b, 8c is a movement including the A direction component which is also the shaving direction, it is not necessary to weaken the pressing force in the skin direction, and the inner blades 7a, 7b. Although the stroke in the B direction is small even though the movement in the reciprocating direction B of 7c is included.

  Further, since the eccentric pins 23a and 24a provided on the gears 23 and 24 rotating in opposite directions are at positions different by 180 °, the blade holding frame 13 and the outer blades 8a and 8c and the blade holding frame 14 are located. The reciprocating vibration in the C direction is performed in the opposite phase to the outer cutter 8b. The outer blades 8a, 8c and the outer blade 8b come close to and away from each other, and such movement of the outer blades 8a, 8b, 8c pressed against the skin causes a sleeping wrinkle. In particular, there is less shave left.

  In the above embodiment, the groove-shaped slide guides 130 and 140 are directly provided in the head case 4. However, a plate capable of changing the angle with respect to the head case 4 is provided, and the slide guides 130 and 140 are provided on the plate. The vibration direction of the outer blades 8a, 8b, and 8c may be changed between the direction A and the direction B.

  Further, the rotational frequency of the electric motor 22 for vibration of the outer blades 8a, 8b, 8c can be changed, the vibration frequency of the outer blades 8a, 8b, 8c can be changed, or the eccentric amount of the eccentric pins 23a, 24a. It is also preferable to be able to change the vibration stroke of the outer blades 8a, 8b, 8c by changing.

  In addition, although all the outer blades 8a, 8b, and 8c are vibrated, at least one outer blade may not be vibrated. Even in this case, it is possible to obtain a wake-up effect caused by a change in the distance between the vibrating outer blade and the non-vibrating outer blade in accordance with the vibration of the outer blade.

  Of course, the slide guides 130 and 140 may be provided on the holding frames 13 and 14 side, and the guide pins 131 and 141 may be provided on the head case 4 side.

  In order to convert the movement of the eccentric pins 23a and 24a into a reciprocating motion, the holding frames 13 and 14 and the eccentric pins 23a and 24a are formed integrally with the holding frames 13 and 14, and the tips are fitted to the eccentric pins 23a and 24a. An elastic link piece can be used.

  An example of another embodiment is shown in FIGS. In this example, four outer cutters 8a, 8b, 8c, 8d are provided in parallel and parallel, and inner cutters 7a, 7b, 7c, 7d (inner contacts that are in sliding contact with the inner surfaces of these outer cutters 8a, 8b, 8c, 8d). The blades 7b and 7c (not shown) are driven by the linear vibration motor 5, and the outer blades 8a, 8b, 8c and 8d can also be vibrated by the linear vibration motor 5.

  For this purpose, the outer blades 8a and 8b are held by the slide plate 9a, and the outer blades 8c and 8d are held by the slide plate 9b. Further, a fixed base 40 is provided on the head case 4 so that the slide plates 9 a and 9 b can slide on the fixed base 40.

  The fixed base 40 is provided with guide pieces 41, 41 extending obliquely at both ends thereof, and the slide plates 9a, 9b, which are inclined sides at both ends, are disposed between the guide pieces 41, 41, respectively. With respect to the fixed base 40, in the direction C defined by the guide pieces 41, 41, that is, the reciprocating direction B of the inner blades 7a, 7b, 7c, 7d and the direction in which the outer blades 8a, 8b, 8c, 8d are aligned (shaving) Direction) It is slidable in a direction C intersecting with A.

  In this electric razor, when the linear vibration motor 5 reciprocates the inner blades 7a, 7b, 7c, 7d in the B direction, the outer blades 8a, 8b, Although 8c and 8d also try to move in the B direction, this movement is a movement in the C direction within the plane where the outer blades 8a, 8b, 8c, and 8d are lined up by the restriction by the guide pieces 41 and 41 of the fixed base 40. .

  Even in this case, the inner blades 7a, 7b, 7c, and 7d that vibrate in the B direction are swung in the A direction orthogonal to the B direction. This is because the linear vibration motor 5 and the inner blades 7a, 7b, 7c, There is no problem because it is within the range of play allowed for the connecting portion with 7d.

  The inner blades 7a and 7b and the inner blades 7c and 7d are respectively connected to two output portions 16 and 16 that reciprocate in the opposite phase in the linear vibration motor 5, and the inner blade 7a contacts the inner surface. The outer blade 8b in which the outer blade 8a and the inner blade 7b are in contact with the inner surface, and the outer blade 8c in which the inner blade 7c is in contact with the inner surface and the outer blade 8d in which the inner blade 7d is in contact with the inner surface are provided on different slide plates 9a and 9b. Therefore, the slide plates 9a and 9b perform the movement in the C direction in opposite phases. For this reason, in the present embodiment, the outer blades 8a and 8b and the outer blades 8c and 8d move toward and away from each other.

  Further, as shown in FIG. 6, springs 42 and 42 are provided between the slide plates 9a and 9b and the fixed base 40 for setting the resonance frequency of vibration in the C direction of the slide plates 9a and 9b. If the C-direction vibrations of the slide plates 9a and 9b are made near the resonance frequency, stable vibrations of the outer blades 8a, 8b and 8c can be obtained.

  In particular, as shown in FIG. 7, the input current I to the linear vibration motor 5 is set to the vibration frequency (for example, 233 Hz) α of the inner blades 7a, 7b, and 7c, the vibration frequency of the outer blades 8a, 8b, and 8c and the above. If the resonance frequency (for example, 10 Hz) β is superimposed, the vibrations of the outer blades 8a, 8b, and 8c can be further stabilized.

  It should be noted that the frequency superposition is effective even in the case where the spring 42 is not provided. This is because when the outer blades 8a, 8b, 8c, and 8d also move in the C direction as the inner blades 7a, 7b, 7c, and 7d move, the amplitude increases at the superimposed frequency due to the influence of the superimposed waveform. .

  In the case of this embodiment, since the reciprocating motion of the inner blades 7a, 7b, 7c uses a force to move the outer blades 8a, 8b, 8c in the same direction, the inner blades 7a, 7b, The drive source 7c is not limited to the linear vibration motor 5.

1 Electric razor 5 Linear vibration motor 7a, 7b, 7c Inner blade 8a, 8b, 8c Outer blade B Inner blade reciprocating direction C Outer blade vibration direction

Claims (7)

  A reciprocating electric shaver comprising a plurality of outer blades arranged in parallel and an inner blade that is in contact with the inner surface of each outer blade and is driven to reciprocate in the longitudinal direction of the outer blade. An electric razor comprising an outer blade driving means that vibrates in a direction along a plane in which blades are arranged and obliquely intersects with a reciprocating direction of the inner blade.   2. The electric shaver according to claim 1, wherein the outer blade driving means vibrates a plurality of outer blades in opposite phases.   The electric shaver according to claim 1 or 2, wherein the outer blade driving means has an angle adjusting section for changing the reciprocating direction of the outer blade.   The electric shaver according to any one of claims 1 to 3, wherein the outer blade driving means is capable of changing a vibration frequency or a vibration stroke of the outer blade.   The outer blade driving means includes a slide plate that holds the outer blade, and a fixed base that allows the slide plate to slide in a direction along the surface where the outer blades are aligned and in a direction that obliquely intersects the reciprocating direction of the inner blade. 3. The electric shaver according to claim 1, wherein the outer blade vibrates with the reciprocation of the inner blade in contact with the inner surface.   6. The electric shaver according to claim 5, further comprising a spring that resonates the vibration of the outer blade.   The reciprocating source of the inner blade is a linear vibration motor having a stator and a mover, and the input current to the linear vibration motor is obtained by superimposing the outer blade vibration frequency on the vibration frequency of the inner blade. The electric shaver according to claim 5 or 6, characterized in that.

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