JP2007222339A - Rotary type electric razor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric razor in which cutting performance of the main blade is improved by high speed vibration of a cutter as the main blade to ensure draw cutting of a cutting edge. <P>SOLUTION: The electric razor includes a cutter unit 17 and an outer blade unit 18, head case 19 which supports both of these 17, 18, a main power system 15 for driving a cutter 20, and a vibrating structure which reciprocatingly drives the cutter unit 17. The cutter unit 17 is composed of the cutter 20, a cutter frame 21, and a cutter gear 23 which receives rotating power. The cutter unit is guided and supported slidably back and forth wholly by the head case 19. The vibrating structure converts the rotary power which comes from the main power system 15 into the reciprocating power, and transmitted to the cutter frame 21. By this mechanism, the whole cutter unit 17 is forcibly vibrated at a high speed around the axis of the cutter 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotary electric shaver provided with a vibration generating structure for reciprocatingly driving an inner blade constituting a main blade.

  An electric razor having this type of vibration generating structure is proposed in Patent Document 1, for example. In this case, the entire inner cutter is reciprocated in the axial direction by a cam mechanism by utilizing the rotation of the inner cutter. Both ends of the rotary shaft of the inner blade are supported so as to be reciprocally driven in the axial direction by a drive shaft and a driven shaft supported by bearings, respectively, and the rotary shaft and the drive shaft, and the rotary shaft and the driven shaft A compression coil type spring for pressing and biasing the inclined cam against the ball is interposed therebetween. The rotating shaft and the drive shaft, and the rotating shaft and the driven shaft are engaged and connected so as not to be relatively rotatable.

  The cam mechanism includes a slope cam provided on the driven shaft and a ball that receives the slope cam surface from the side surface. The ball is rotatably supported by the case. The motor power is transmitted to the inner blade through the winding transmission mechanism and the drive shaft, and the inner blade can be driven to reciprocate by the tilt cam contacting the ball being displaced in the axial direction while rotating.

Japanese Patent Laid-Open No. 54-65660 (left column of page 2, FIG. 2)

  As described above, when the inner blade is driven to reciprocate while being rotated, the whisker can be cut obliquely with the cutting blade, so that the sharpness of the main blade can be improved as compared with the case where the inner blade is simply driven to rotate. However, since the rotating operation of the inner blade is converted into a reciprocating operation by the slope cam and the ball, the number of reciprocations of the inner blade during one rotation is limited to one. In other words, although the inner blade can vibrate left and right once, the moving speed in the axial direction is low, so that it is difficult to obtain a sufficient cutting effect.

  The inclined cam is pressed against the ball with a spring interposed between the rotary shaft and the drive shaft, and between the rotary shaft and the driven shaft, so if the drive speed of the inner blade exceeds a certain value, the shaft of the inner blade Since the inertial force in the direction of the heart exceeds the biasing force of the spring and the cam mechanism cannot be operated as a positive movement mechanism, it is difficult to reliably follow the slant cam to the ball. Under such circumstances, not only the tearing effect cannot be exhibited but also abnormal vibration may occur.

  An object of the present invention is to provide an electric razor that can reliably vibrate the inner blade of the main blade at high speed and reliably perform the cutting with the cutting blade, and improve the sharpness of the main blade by that amount. It is in. The object of the present invention is to forcefully reciprocate the inner blade irrespective of its driving rotational speed, and to cut the whiskers while giving slight vibration to the skin surface, and therefore it has fallen along the skin surface. An object of the present invention is to provide an electric razor capable of more effectively performing whisker cutting with a cutting blade by actively introducing whiskers or comb hairs into the blade hole.

  The electric razor according to the present invention includes an inner blade unit 17 and an outer blade unit 18 that constitute the main blade 13, a head case 19 that supports the inner blade unit 17 and the outer blade unit 18, and a rotation of the motor 45. A main power system 15 for transmitting power to the inner blade 20 and a vibration generating structure for reciprocating the inner blade unit 17 are arranged. The inner blade unit 17 is fixed to one end of the inner blade 20, the inner blade frame 21 that rotatably supports the inner blade 20, and the inner blade 20, and from the final gear 53 of the main power system 15. And an inner blade gear 23 that inherits the rotational power. The inner blade unit 17 is guided and supported by the head case 19 so as to be slidable back and forth along the axial direction of the inner blade 20. The vibration generating structure is provided between the motor 45 and the inner blade frame 21 and configured to convert the rotational power of the motor 45 into reciprocating power. Thus, the entire inner blade unit 17 is configured to be able to forcibly vibrate at high speed with the reciprocating power transmitted to the inner blade frame 21 via the vibration generating structure.

  The vibration generating structure is provided between the vibration generating force system 48 branched from the main power system 15 for driving the inner blade, and between the vibration generating force system 48 and the inner blade frame 21, and is transmitted by the vibration generating force system 48. And a reciprocating power conversion mechanism that converts the rotational power into reciprocating power.

  Another vibration generating structure includes a reciprocating power transmission mechanism provided between the main power system 15 for driving the inner blade and the inner blade frame 21. A reciprocating power conversion mechanism for converting the rotational power of the main power system 15 into reciprocating power is provided at a branch portion between the main power system 15 and the reciprocating power transmission mechanism.

  In the electric razor in which the main blade 13 and the second cutting blade 14 that mainly cuts long hair are adjacent to the razor head 2, the second cutting blade 14 extends along the outer blade 40 and the inner surface of the outer blade 40. And an inner blade 41 that is reciprocally driven. Between the inner blade 41 of the second cutting blade 14 and the motor 45, there is provided a second power system 47 that converts the rotational power of the motor 45 into reciprocating power and transmits it to the inner blade. The amplitude of the inner blade 20 of the main blade 13 is set sufficiently smaller than the amplitude of the inner blade 40 of the second cutting blade 14.

Another electric razor according to the present invention includes a razor head 2, an inner blade unit 17 and an outer blade unit 18 that constitute the main blade 13, a main power system 15 that transmits the rotational power of the motor 45 to the inner blade 20, A vibrating structure for reciprocatingly driving the inner blade 20 of the blade unit 17 is arranged.
The inner blade unit 17 is fixed to one end of the inner blade 20, an inner blade frame 21 that rotatably supports the inner blade 20 and reciprocally moves along the axis, and an inner blade 20. The inner blade gear 23 inherits the rotational power from the final gear 53 of the main power system 15. The vibration structure is provided between a vibration frame 85 that moves and moves the inner blade 20 in the axial direction, and a reciprocating power that converts the rotational power of the motor 45 into a reciprocating power. Includes conversion mechanism. Therefore, the inner blade 20 is configured to be able to forcibly vibrate at high speed with the reciprocating power transmitted to the vibration frame 85 via the vibration structure.

  In the present invention, the inner blade unit 17 including the inner blade 20, the inner blade frame 21, the inner blade gear 23, and the like is guided and supported by the head case 19 so as to be slidable back and forth along the axial direction of the inner blade 20. . In addition, the rotational power of the motor 45 is converted into reciprocating power by a vibration generating structure so that it can be transmitted to the inner blade frame 21.

  Therefore, according to the electric shaver of the present invention, the inner blade 20 is rotationally driven by the main power system 15, and at the same time, the entire inner blade unit 17 is forcibly vibrated at high speed to ensure the cutting by the cutting blade 20b. The sharpness of the main blade 13 can be accurately improved by that amount. The entire inner blade unit 17 is forcibly driven back and forth so that whiskers can be cut while applying slight vibrations to the skin surface. Therefore, beards and hairs that fall down along the skin surface are actively put into the blade holes of the main blade 13. Therefore, the beard cutting by the main blade 13 can be performed more effectively.

  The rotational force transmitted from the vibration generating force system 48 is provided between the vibration generating force system 48 branched from the main power system 15 for driving the inner blade, and between the vibration generating force system 48 and the inner blade frame 21. According to the vibration generating structure constituted by the reciprocating power conversion mechanism for converting to reciprocating power, the driving frequency of the inner blade unit 17 can be freely set regardless of the main power system 15, so that the driving rotational speed of the inner blade 20 is increased. In addition, the driving frequency of the inner blade 20 can be optimized according to parameters that greatly affect the cutting effect, such as the lead angle of the cutting blade 20b.

  The reciprocating power transmission mechanism provided between the main power system 15 for driving the inner blade and the inner blade frame 21 constitutes a vibration generating structure, and the main power system is provided at a branch portion between the main power system 15 and the reciprocating power transmission mechanism. If the reciprocating power conversion mechanism for converting the 15 rotational power into the reciprocating power is provided, the vibration generating structure can be configured with a smaller number of components, and therefore an electric shaver provided with the vibration generating structure can be provided at a lower cost.

  According to the electric razor in which the main blade 13 and the second cutting blade 14 that mainly cuts long hair are arranged adjacent to the razor head 2, the main blade 13 cuts short hair and removes long hair and twisted hair. The two cutting blades 14 can be cut simultaneously to effectively shave. If the amplitude of the inner blade 20 of the main blade 13 is set sufficiently smaller than the amplitude of the inner blade 40 of the second cutting blade 14, the kinetic inertia force when the inner blade unit 17 reciprocally vibrates can be reduced, so that the razor head 2 Can be reliably prevented from vibrating abnormally. Furthermore, there is also an advantage that the driving load of the motor 45 can be reduced by the amount that the motion inertia force is small.

  In another electric shaver according to the present invention, the inner blade unit 17 is constituted by the inner blade 20, the inner blade frame 21 that pivotally supports the inner blade 20, the inner blade gear 23, and the like. The inner blade 20 is supported by the inner blade frame 21 so as to be rotatable and reciprocally movable along the axial center, and a vibration frame 85 for moving the inner blade 20 in the axial direction is newly provided. In addition, the rotational power of the motor 45 is converted into reciprocating power by a reciprocating power conversion mechanism provided between the motor 45 and the vibration frame 85, and then only the inner blade 20 is driven to reciprocate by being transmitted to the vibration frame 85. I was able to do it.

  According to the electric razor capable of reciprocatingly driving the inner blade 20 as described above, the inner blade 20 is forced to vibrate at a high speed at the same time while the inner blade 20 is rotationally driven by the main power system 15, and the cutting blade 20b. Therefore, the sharpness of the main blade 13 can be improved accurately. Furthermore, since only the inner blade 20 is driven to vibrate at high speed, the movement inertia force during the reciprocating vibration can be reduced and vibration of the razor head 2 can be suppressed compared to the case where the entire inner blade unit 17 is driven to reciprocate.

(Embodiment) FIGS. 1 to 10 show an embodiment of an electric shaver according to the present invention. 2 and 3, the electric razor includes a main body case 1 that also serves as a grip, and a razor head 2 that is disposed above the main body case 1. The main body case 1 accommodates the secondary battery 3 and the control board 4, and the display panel 5 and the switch panel 6 are assembled on the upper and lower sides of the front surface of the case. A wrinkle blade unit 7 is incorporated in the back of the case.

  The display panel 5 is formed of a semi-transparent half mirror. When the electric razor is used, the operation state and operation mode of the motor 45 can be displayed. When the motor 45 is stopped, a mirror for confirming the shaving result is displayed. Can be used as The switch panel 6 is provided with a push button type switch button 10 for starting or stopping the motor 45 and a push button type switch button 11 for switching the operation mode of the motor 45.

  2, 4, and 5, the razor head 2 includes a power module M serving as a basic structure, a pair of front and rear main blades 13 and 13, and a center blade (a second blade disposed between both main blades 13. Cutting blade) 14, a main power system 15 that transmits the power of the motor 45 to the inner blade 20 of the main blade 13, and a vibration generating structure that forcibly drives the inner blade 20 to reciprocate. The razor head 2 is attached to the main body case 1 via a float mechanism described later.

  The main blade 13 is composed of an inner blade unit 17 and an outer blade unit 18, and both the units 17 and 18 are detachably attached to a head case 19 fixed to the power module M. 4 to 7, the inner blade unit 17 includes an inner blade 20 having a rotary blade structure, an inner blade frame 21 that pivotally supports the inner blade 20, and an inner blade gear 23 that is fixed to one end of the inner blade 20. Etc. The inner blade 20 is configured by implanting and fixing a group of metal cutting blades 20b in a spiral shape on the peripheral surface of a plastic holder 20a formed in a cylindrical shape (see FIG. 7), and the holder 20a. Inner blade shafts 24 project from both ends of the inner blade.

  As shown in FIGS. 4 and 9, the inner blade frame 21 is an inverted portal shape that is provided with a laterally long base wall 21 a and a bearing wall 21 b that protrudes on both upper surfaces of the base wall 21 a as a single body. The inner blade 20 is rotatably supported by pivotally supporting the inner blade shaft 24 with a pair of bearing walls 21b. On the left and right sides of the bottom surface of the base wall 21a, a pair of front and rear inverted L-shaped rails 25 that are slidably guided by the slide base 22 are provided. Inner blade gears 23, 23 rotating together with the inner blades 20 are fixed to the inner blade shaft 24 protruding from the left bearing wall 21 b, and the reverse gear 26 is freely rotatable below the one inner blade gear 23. Is pivotally supported.

  A slide base 22 is detachably mounted on the upper surface of the head case 19 in order to guide and support the inner blade unit 17 so as to be slidable left and right. The slide base 22 is made of a flat plastic molded product. Engagement grooves 28 are formed at four positions on the lower surface of the slide base 22, and guide grooves 29 are formed on the front and rear surfaces of the plate surface.

  As shown in FIG. 7, the inner blade frame 21 is assembled to the slide base 22 with the rail 25 engaged with the guide groove 29, and the slide base 22 is mounted on the head case 19 from above to be provided on the head case 19. Further, the four lock claws 30 (see FIG. 4) engage with the engagement groove 28 to lock the slide base 22 so as not to be separated. In this mounted state, the inner blade gear 23 and the reverse gear 26 are engaged with the final gear 53 of the main power system 15 to inherit the power, and the inner blade unit 17 further includes the gears 23, 26, 53. Can be slid back and forth in the axial direction while being engaged. For this purpose, the gear width of the final gear 53 is formed wide in consideration of the slide stroke of the inner blade unit 17. The inner gear 23 and the reverse gear 26 are preferably meshed with the final gear 53 in a state where the gear teeth are within the range of the gear width of the final gear 53. You may mesh with the last stage gear 53 in the state in which a part of gear tooth protrudes from the gear width.

  4 and 6, the outer blade unit 18 includes an outer blade holder 32 whose upper and lower surfaces are open, and a blade body unit 33 that is detachably attached to the outer blade holder 32. The blade unit 33 includes an outer blade frame 34 whose upper and lower surfaces are opened, and a pair of front and rear outer blades 35 and 35 formed of a mesh blade that is retained in an inverted U shape by the outer blade frame 34. The center blade 14 is disposed between the outer blades 35 and 35 and is detachably attached to the outer blade frame 34. On both side walls of the outer blade holder 32, lock buttons 36 that lock and hold the blade unit 33 are provided. When the lock button 36 is pushed in, the blade unit 33 can be detached from the outer blade holder 32.

  In order to lock and hold the outer blade unit 18 mounted on the upper surface of the head case 19 in an inseparable manner, lock bodies 37 are provided on the left and right inner surfaces of the head case 19, and the lock bodies 37 are engaged with the outer blade holder 32 by springs 38. The lock is urged in the direction to perform (see FIG. 4). When the lock body 37 is pushed against the spring 38, the engagement between the engagement recesses on the inner surface of the outer blade holder 32 and the engagement claws of the lock body 37 is released. Can be removed from.

  4 and 5, the center blade 14 includes an outer center blade (outer blade) 40, an inner center blade (inner blade) 41, a passive piece 42 fixed to the inner surface of the inner center blade 41, and an inner center blade 41. Is configured by a pair of left and right leaf springs 43 that press and urge the outer center blade 40 against the outer center blade 40. The outer center blade 40 and the inner center blade 41 are formed as slit blades or comb blades. In this embodiment, both are formed by comb blades. Since the center blade 14 mainly cuts long hairs and comb hairs, and the main blade 13 mainly cuts short hairs, it is possible to shave from long hairs to short hairs simultaneously by the cooperative action of both 13 and 14.

  As shown in FIGS. 5 and 8, the power module M includes a horizontally disposed motor 45, a motor holder 46, a main power system 15 that transmits motor power to the pair of front and rear inner blades 20, and a main power system. 15, a second power system 47 that transmits motor power to the center blade 14 and the sharpening blade unit 7, a vibration force system 48 that branches from the main power system 15, and components of these power systems Consists of a case and a cover group for incorporation. Side frames 49 facing left and right are projected upward on both sides of the motor holder 46 (see FIG. 4).

  1 and 5, the main power system 15 includes a driving gear 51 fixed to the output shaft of the motor 45, a planetary gear mechanism 52 meshing with the driving gear 51, an output shaft of the planetary gear mechanism 52, and a final gear 53. It is comprised by the winding transmission mechanism 54 etc. which are provided between these gear shafts. The winding transmission mechanism 54 is configured by using a timing belt as a transmission element, and is assembled to the left side frame 49 together with the final stage gear 53. The head case 19 described above is integrated with the motor holder 46.

  The second power system 47 includes a first gear 56 that meshes with the driving gear 51, a face gear 57 that is provided on one side of the first gear 56, a gear train 58 that meshes with the face gear 57, and a final gear of the gear train 58. An eccentric cam 59 and an eccentric pin 60 provided integrally on the upper surface, an L-shaped vibrating arm 61 that engages with the eccentric cam 59, a vibrator 62 that engages with the eccentric pin 60, and the like.

  The rotational power transmitted through the gear train 58 is converted into reciprocating power by the eccentric cam 59 and the vibration arm 61, and via a drive groove 63 (see FIG. 8) provided at the lower end of the output arm of the vibration arm 61. The power is transmitted to the movable blade of the shave blade unit 7. Similarly, the reciprocating power converted by the eccentric pin 60 and the vibrator 62 is transmitted to the passive piece 42 via the drive shaft 64 provided in the vibrator 62, and thereby the inner center blade 41 is driven to reciprocate.

  The vibration generating structure includes a vibration generating force system 48 and a reciprocating power conversion mechanism. The reciprocating power conversion mechanism includes an eccentric cam 66 provided at the final stage of the vibration generating force system 48, a vibrator 67 driven to reciprocate by the eccentric cam 66, and a drive shaft 68 provided on the upper surface of the vibrator 67. The vibration generating force system 48 is branched from the main power system 15 by using a part of the second power system 47. Specifically, the first gear 56, the face gear 57, the second gear 69 provided integrally on the upper surface of the first gear 58 a of the gear train 58, and the third gear 70 meshing with the second gear 69, the vibration generating force The system 48 is configured, and an eccentric cam 66 is integrally provided on the upper surface of the third gear 70.

  As shown in FIG. 7, when the inner blade unit 17 and the slide base 22 are assembled to the head case 19, the drive shaft 68 engages with a passive groove 71 formed on the lower surface of the inner blade frame 21. Therefore, when the motor 45 is activated, the rotational power is transmitted by the electromotive force system 48, and further converted into reciprocating power while passing through the eccentric cam 66 and the vibrator 67, and transmitted to the inner blade frame 21. As a result, the entire inner blade unit 17 can be vibrated in the axial direction while rotationally driving the inner blade 20.

  Incidentally, the reduction ratio in the final gear 53 of the main power system 15 is 2.8, and when the rotational speed of the motor 45 is 10,000 rpm, the inner blade 20 is rotationally driven at about 3600 rpm. Similarly, the reduction ratio of the final gear of the gear train 58 of the second power system 47 is 1.3, and the inner center blade 41 is reciprocated at 7700 times / min. Its amplitude is 2.4 mm. Further, the reduction ratio in the third gear 70 of the vibration generating force system 48 is 1.0, and the inner blade unit 17 is reciprocated at 10,000 times / minute. Its amplitude is 0.6 mm.

  As described above, when the amplitude of the inner blade unit 17 is reduced to a quarter of the amplitude of the inner center blade 41, the razor head 2 is excessively vibrated by the vibration operation of the inner blade unit 17. It is possible to prevent the motor 45 from being overloaded at the same time. When the amplitude of the inner blade unit 17 exceeds a certain value, the motion inertia force of the inner blade unit 17 increases, and an excessive load is applied to the motor 45 by that amount.

  In FIG. 8, the float mechanism that supports the razor head 2 includes a float base 73 fixed to the upper end of the main body case 1, and a pair of left and right legs disposed between the left and right leg pieces of the float base 73 and the power module M. It consists of a compression coil spring (not shown). The float base 73 is made of a press-molded product, and the razor head 2 and the main body case 1 are connected by fastening a connecting boss 75 inserted into the connecting seat from the lower surface side to a screw boss of the motor holder 46 with a screw 76. ing. As a result, the entire razor head 2 is floatingly supported so as to be tiltable in all directions including front and rear, left and right, up and down, and oblique directions.

  According to the electric razor configured as described above, the entire inner blade unit 17 can be reliably reciprocated at a high speed while the inner blade 20 is driven to rotate, so that the cutting with the cutting blade can be performed reliably. The sharpness of the main blade 13 can be accurately improved by that amount. Further, since the whisker can be cut while the inner blade 20 is vibrated at a high speed and the skin surface is finely vibrated, the main blade 13 and the center blade 14 can remove beards that have fallen along the skin surface, or bends that are bent along the skin surface. The whiskers can be cut more effectively by actively introducing them into the blade holes.

  Since the vibration generating force system 48 is provided separately from the main power system 15 to drive the inner blade unit 17 in a reciprocating manner, and the vibration generating structure can be configured as a positive mechanism, the inner blade is independent of the rotational speed of the inner blade 20. The drive frequency of the unit 17 can be freely set, and the drive frequency of the inner blade 20 can be optimized according to parameters that greatly influence the cutting effect, such as the drive rotation number of the inner blade 20 and the lead angle of the cutting blade 20b. This is advantageous.

  11 to 13 each show another embodiment of the vibration generating structure. In FIG. 11, the output shaft is protruded from both ends of the motor 45, the main power system 15 and the second power system 47 are simultaneously driven by one output shaft, and the electromotive force system 48 is driven by the remaining output shaft. In this case, the vibration generating force system 48 includes a tenth gear 78 fixed to the output shaft, an eleventh gear 79 meshed with the tenth gear 78, a face gear 80 provided integrally with the eleventh gear 79, and a face gear 80. The oscillating force system 48 is constituted by the twelfth gear 81 meshing with the twelfth gear 81, and the eccentric cam 66 is provided on the upper surface of the twelfth gear 81. The reciprocating power conversion mechanism in this embodiment includes an eccentric cam 66, a vibrator 67, and a drive shaft 68 provided on the vibrator 67. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted. The same applies to the following embodiments.

  In FIG. 12, the vibration generating structure includes a dedicated second motor 83, an eccentric cam 66 fixed to the output shaft of the second motor 83, a vibrator 67 reciprocated by the eccentric cam 66, and a vibrator 67 The drive shaft 68 provided in the above. Thus, the inner blade unit 17 can be reciprocated by a dedicated motor different from the motor 45 for the main power system 15. The reciprocating power conversion mechanism in this embodiment includes an eccentric cam 66, a vibrator 67, and a drive shaft 68, and the electromotive force system 48 is omitted.

  The embodiment shown in FIG. 13 is different from the above-described embodiments in that only the inner blade 20 is reciprocally driven with a vibration generating structure. Here, the inner blade shaft 24 of the inner blade 20 is pivotally supported by the inner blade frame 21 so as to be rotatable and reciprocally movable along the axis. On the left and right inner cutter shafts 24, inverted portal-shaped excitation frames 85 are assembled so as to be rotatable only relative to each other. The vibration frame 85 is guided and supported by the inner blade frame 21 so as to be slidable only to the left and right. A passive piece 86 that engages with the drive shaft 68 of the vibrator 67 is fixed to the bottom wall. The electromotive force system 48 is the same as the structure described with reference to FIG. 5, and the reciprocating power conversion mechanism includes an eccentric cam 66, a vibrator 67, and a drive shaft 68. As described above, when only the inner blade 20 is reciprocated, the motion inertia force during reciprocating vibration can be reduced as compared with the case where the entire inner blade unit 17 is reciprocated, thus preventing the razor head 2 from vibrating excessively. it can.

  FIG. 14 shows still another embodiment of the vibration generating structure. There, a vibration generating structure is constituted by a reciprocating power transmission mechanism provided between the main power system 15 for driving the inner blade and the inner blade frame 21, and at a branch portion between the main power system 15 and the reciprocating power transmission mechanism, A reciprocating power conversion mechanism for converting the rotational power of the main power system 15 into reciprocating power is provided.

  Specifically, the passive piece 91 that is reciprocated up and down by an eccentric cam 90 fixed to the output shaft of the motor 45, the pinion 92 that reciprocates by taking up and down the passive piece 91, and the pinion 92 that meshes with the left and right A reciprocating power transmission mechanism is configured by a drive block 93 that is reciprocated in the direction, a drive shaft 68 that is fixed to the upper surface of the drive block 93, and a pinion 94 that meshes with the lower surface of the central portion of the drive block 93. The reciprocating power conversion mechanism includes an eccentric cam 90 and a passive piece 91. When the reciprocating power conversion mechanism is provided at the branch portion between the main power system 15 and the reciprocating power transmission mechanism in this way, it can be configured as a power system that does not include a gear train.

  FIG. 15 shows still another embodiment of the vibration generating structure. In this case, the electromotive force is branched using the timing belt 96 of the winding transmission mechanism 54 and converted into reciprocating power by the reciprocating power conversion mechanism so that the inner blade frame 21 can be reciprocated. Specifically, a passive pulley 97 that meshes with the timing belt 96, a shaft 98 that supports the passive pulley 97, a face gear 99 that is fixed to the other end of the shaft 98, and a final gear 100 that is rotationally driven by the face gear 99. And the rotational force transmitted to the final gear 100 is converted into reciprocating power by the eccentric cam 66 and the vibrator 67 provided on the upper surface thereof, and provided on the upper surface of the vibrator 67. The inner cutter frame 21 can be reciprocated by the drive shaft 68. Thus, the vibration generating force system 48 can be branched from the middle part of the main power system 15.

  In the above embodiment, the entire inner blade unit 17 is supported by the slide base 22 attached to the head case 19 so as to be reciprocally slidable. However, it is not necessary, and the inner blade frame 21 can be directly reciprocated by the head case 19. Can be supported. The razor head 2 may be provided with at least one main blade 13, and one main blade 13 and the second cutting blade 14 may be disposed adjacent to each other. As a mechanism for converting the rotational power in the vibration generating force system 47 into reciprocating power, in addition to the eccentric cam (or the eccentric pin) 66 and the vibrator 67, the vibration arm 61 and the eccentric cam (or the eccentric cam described in FIG. A structure such as a conversion element for the eccentric pin 66 can be employed.

  In the above embodiment, the motor 45 is disposed horizontally, but can be disposed vertically. The winding transmission mechanism 4 can be constituted by a gear train composed of a group of gears. The vibrator 67 is omitted, and the elongated passive groove 71 provided in the inner blade frame 21 can be directly reciprocated by the eccentric cam 66. In this case, the reciprocating power conversion mechanism is provided in the inner blade frame 21. The passive groove 71 and the eccentric cam 66 are included. Similarly, the vibrating frame 85 described with reference to FIG. 13 can be directly reciprocated by the eccentric cam 66.

It is principle explanatory drawing which shows the oscillation structure of an inner blade. It is a front view of an electric razor. It is a side view of an electric razor. It is an exploded sectional view of a razor head. It is explanatory drawing which shows the power transmission structure in a razor head. It is the disassembled side view of the outer blade and inner blade which fractured | ruptured some structures. It is a vertical side surface which shows the slide structure of an inner blade unit. It is a vertical side view of a razor head. It is the disassembled front view which fractured | ruptured one part which shows the slide structure of an inner blade unit. It is a schematic plan view of a vibration force system. It is explanatory drawing which shows another Example of a power transmission structure. It is explanatory drawing which shows another Example of a power transmission structure. It is explanatory drawing which shows another Example of an oscillation structure. It is explanatory drawing which shows another Example of an oscillation structure. It is explanatory drawing which shows another Example of an oscillation structure.

Explanation of symbols

2 Razor head 13 Main blade 14 Second cutting blade 15 Main power system 17 Inner blade unit 18 Outer blade unit 19 Head case 20 Inner blade 21 Inner blade frame 23 Inner blade gear 40 Outer blade 41 of second cutting blade 41 Second cutting blade Inner blade 45 Motor 47 Second power system 48 Vibration force system 53 Final gear 66 Eccentric cam 67 Vibrator 68 Drive shaft 85 Vibration frame

Claims (5)

The razor head (2) has an inner blade unit (17) and an outer blade unit (18) constituting the main blade (13), and a head case (19) for supporting the inner blade unit (17) and the outer blade unit (18). ), A main power system (15) that transmits the rotational power of the motor (45) to the inner blade (20), and a vibration generating structure that reciprocates the inner blade unit (17).
The inner blade unit (17) is fixed to one end of the inner blade (20), the inner blade frame (21) that rotatably supports the inner blade (20), and the inner blade (20), An inner blade gear (23) that inherits rotational power from the final gear (53) of the main power system (15),
The inner blade unit (17) is supported by the head case (19) so as to be slidable back and forth along the axial direction of the inner blade (20).
The vibration generating structure is provided between the motor (45) and the inner blade frame (21), and is configured to convert the rotational power of the motor (45) into reciprocating power.
A rotary electric shaver that is configured so that the entire inner blade unit (17) can be forced to vibrate at high speed with reciprocating power transmitted to the inner blade frame (21) via a vibration generating structure.   A vibration generating structure is provided between the vibration generating force system (48) branched from the main power system (15) for driving the inner blade, and between the vibration generating force system (48) and the inner blade frame (21). 2. A rotary electric shaver according to claim 1, comprising a reciprocating power conversion mechanism for converting rotational power transmitted by the vibration generating force system (48) into reciprocating power. The vibration generating structure comprises a reciprocating power transmission mechanism provided between the main power system (15) for driving the inner blade and the inner blade frame (21),
The rotary electric shaver according to claim 1, wherein a reciprocating power conversion mechanism for converting the rotational power of the main power system (15) into reciprocating power is provided at a branch portion between the main power system (15) and the reciprocating power transmission mechanism. . The razor head (2) has a main blade (13) and a second cutting blade (14) that mainly cuts long hair arranged adjacent to each other.
The second cutting blade (14) includes an outer blade (40) and an inner blade (41) driven to reciprocate along the inner surface of the outer blade (40).
Between the inner blade 41 of the second cutting blade (14) and the motor (45), a second power system (47) for converting the rotational power of the motor (45) into reciprocating power and transmitting it to the inner blade is provided. And
The rotary electric shaver according to claim 1 or 2, wherein the amplitude of the inner blade (20) of the main blade (13) is set sufficiently smaller than the amplitude of the inner blade (40) of the second cutting blade (14). . A main power system that transmits the rotational power of the inner blade unit (17) and the outer blade unit (18) constituting the main blade (13) to the inner blade (20) to the razor head (2). 15) and an oscillating structure for reciprocatingly driving the inner blade (20) of the inner blade unit (17),
The inner blade unit (17) includes an inner blade (20), an inner blade frame (21) that rotatably supports the inner blade (20) and reciprocally movable along the axis, and an inner blade (20 ) And an inner blade gear (23) that inherits rotational power from the final gear (53) of the main power system (15),
The excitation structure is provided between the excitation frame (85) for moving the inner blade (20) in the axial direction, and between the motor (45) and the excitation frame (85). Including a reciprocating power conversion mechanism for converting rotational power into reciprocating power,
A rotary electric shaver configured such that the inner blade (20) can be forced to vibrate at high speed with reciprocating power transmitted to the vibration frame (85) via the vibration structure.

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