JP2013070809A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an electric razor robust by improving fastening strength of a drive unit and a body case and silence the electric razor during use by suppressing noises of a hitting sound, a chattering sound of a case or the like.SOLUTION: A motor 15, an inner frame 23 that supports the motor 15, and a vibrator 17 that converts the rotative power of the motor 15 to reciprocal movement are stored inside of a cylindrical body case 1 having an assembling port 8 on an upper face, and the assembling port 8 is closed with a lid 40. An assembling seat 50 that supports the fastening part 28 of the inner frame 23 from a lower face side is arranged inside of the cylindrical body case 1. The fastening part 37 of the vibrator 17 and the fastening part 44 of the lid 40 are sequentially joined to the fastening part 28 of the inner frame 23. The lid 40, the vibrator 17, and the inner frame 23 are fastened together to the cylindrical body case 1 while they are positioned by fastening screws 60 by driving the fastening screws 60 that pass through the respective fastening parts 28, 37, and 44 into the assembling seat 50.

Description

  The present invention relates to a reciprocating electric shaver in which a motor, an inner frame, and a vibrator are provided inside a main body case, and an upper opening of the main body case is closed with a lid.

  This type of electric razor is disclosed in Patent Document 1, for example. There, a motor, an inner frame and a vibrator are housed inside the main body housing, and the upper opening of the main body housing is closed with a flat fixed frame and dust-proof rubber. The vibrator is integrally provided with a boss (drive shaft) for reciprocatingly driving the inner blade, and the boss projects upward from the central hole of the dust-proof rubber. Similar structures can be seen in the reciprocating electric razors of Patent Documents 2 and 3.

  Japanese Patent Application Laid-Open No. H10-228561 is known regarding the structure for fixing the electrical component unit and the main body case according to the present invention. There, an electric component unit (drive unit) is constructed by incorporating a motor and a battery into the inner frame, and the electric component unit is fastened to the main body case with screws screwed into two upper portions of the inner frame. The main body case is composed of a first case and a second case disposed on the upper side of the case, and a vibrator for a sharp-shaving blade unit is disposed between the two cases. The inserted screw is screwed into the screw boss of the inner frame and fastened together. In addition, the electrical component unit is integrated with the bottom case with screws screwed into two places on the lower part of the inner frame.

Japanese Patent No. 3493701 (paragraph numbers 0012 to 0013, FIG. 3) Japanese Utility Model Publication No. 02-038691 (Background Art, FIG. 9) Japanese Unexamined Patent Publication No. 2000-157760 (paragraph number 0017, FIGS. 3 and 5) JP 2001-054689 A (paragraph numbers 0026 to 0028, FIGS. 1 and 3)

  The reciprocating electric shaver tends to generate noise such as a sliding contact sound between the inner blade and the outer blade, or a tapping sound generated between the eccentric pin and the vibrator. In that respect, when the motor and the vibrator are accommodated inside the main body housing and the upper opening of the main body housing is closed with a fixed frame and dust-proof rubber, as in the electric razors of Patent Documents 1 to 3, the gap between the eccentric pin and the vibrator Can be prevented to a certain extent from the noise (striking sound) generated from the outside of the main body housing. However, since the positional accuracy when the motor, inner frame, and vibrator are assembled is insufficient, noise (tapping sound) generated between the eccentric pin and the vibrator is likely to occur. It is not an effective noise countermeasure. In addition, since the fastening strength between the motor, the inner frame, and the vibrator and the main body case is insufficient, the vibration of the motor and the vibrator is transmitted to the case structure and noise (chattering noise) is likely to be generated.

  The electric razor disclosed in Patent Document 4 is fastened to the upper end of the electrical component unit by fastening the first case, the vibrator, and the second case with two screws screwed into the upper portion of the inner frame. In this fixing structure, the upper end of the electrical component unit, which is heavier than other components, is merely joined to the upper wall of the first case and fastened with screws. Therefore, the positional accuracy when the motor, the inner frame, and the vibrator are assembled is insufficient, so that noise (tapping sound) generated between the eccentric pin and the vibrator is likely to occur.

  It is an object of the present invention to improve the positional accuracy of each member in a state where driving parts such as a motor, an inner frame, and a vibrator are assembled, and to suppress the generation of noise, and thus an electric razor that can reduce noise during use. To provide a razor.

  The electric razor according to the present invention converts a motor 15, an inner frame 23 that supports the motor 15, and a rotational power of the motor 15 into a reciprocating operation inside a cylindrical main body case 1 having an assembly port 8 on the upper surface. The object is an electric razor in which the vibrator 17 is housed and the assembly port 8 is closed by the lid 40. An assembly seat portion 50 that supports the fastening portion 28 of the inner frame 23 from the lower surface side is provided inside the main body case 1. The fastening portion 37 of the vibrator 17 and the fastening portion 44 of the lid body 40 are joined to the fastening portion 28 of the inner frame 23 in order. The fastening screws 60 inserted through the fastening portions 28, 37, and 44 are screwed into the assembly seat portion 50, and the lid body 40, the vibrator 17, and the inner frame 23 are positioned by the fastening screws 60 and the main body case 1. It is characterized by being fastened together.

  A motor holder portion 26 for mounting the motor 15 is provided on the inner frame 23. The assembly seat portion 50 of the main body case 1 is provided adjacent to the vicinity of the upper end of the motor holder portion 26.

  A first sound insulation wall 42 is provided on the lower surface of the lid wall 41 provided on the upper surface of the lid body 40 so as to surround the vibrator 17 in a circular manner and project downward. The surrounding wall 52 of the assembly port 8 of the main body case 1 and the first sound insulating wall 42 cover the periphery of the vibrator 17 in an inner and outer double.

  A second sound insulation wall 53 surrounding the vibrator 17 in a circular shape is provided so as to protrude upward in the main body case 1. The surrounding wall 52 of the assembly port 8 of the main body case 1, the first sound insulating wall 42, and the second sound insulating wall 53 cover the periphery of the vibrator 17 in three layers.

  The drive shaft 18 of the vibrator 17 protrudes upward from a vibration window 43 opened in the lid wall 41 of the lid body 40. A first seal body 57 that seals the gap between the drive shaft 18 and the vibration window 43 and a second seal body 58 that seals the peripheral surface of the fastening screw 60 are disposed on the upper surface of the lid wall 41. The packing presser plates 61 arranged on the upper surfaces of both the first and second seal bodies 57 and 58 are fastened together with fastening screws 60. A gap between the first sound insulation wall 42 of the lid 40 and the second sound insulation wall 53 of the main body case 1 is sealed with a third seal body 59. The transducer chamber R surrounded by the lid body 40 is sealed with the first seal body 57, the second seal body 58, and the third seal body 59.

  The razor head 3 at the top of the main body case 1 is provided with an outer blade holder 20 that supports the blade body 19 of the outer blade 12 and a lock structure that holds the mounted state of the outer blade holder 20. The lock structure includes a detachable button 67 having a lock claw 66 that engages and disengages with the outer blade holder 20, and a lock spring 68 that moves and urges the detachable button 67 in a direction in which the lock claw 66 engages with the outer blade holder 20. I have. The detachable button 67 includes a button portion 71 exposed on the outer surface of the outer blade holder 20 and a spring receiving portion 70 that faces the first sound insulating wall 42 below the lid wall 41 of the lid body 40. The detachable button 67 is slidably guided by the sliding window 47 provided on the lid wall 41, one end of the lock spring 68 is received by the spring receiving portion 70, and the other end is received by the first sound insulating wall 42. . The upper part of the sliding window 47 is covered with a packing presser plate 61.

  The drive shaft 18 of the vibrator 17 and the inner blade 11 are connected via a float structure that can freely float up and down, and the inner blade 11 is pressed and urged by a float spring 88 so as to be in close contact with the outer blade 12. A pair of left and right elastic arms 77 for returning the inner blade 11 tilted left and right to the neutral position are provided on the drive shaft 18 side. A pair of passive pieces 82 that come into contact with the elastic arm 77 and return to the neutral position by the elastic arm 77 are provided on the inner blade 11 side.

  The passive piece 82 is provided with a contact portion 86 that slides up and down relative to the elastic arm 77 and an oblique flank 87 that absorbs the relative tilt of the elastic arm 77 and the passive piece 82. Between the inner blade 11 and the upper end of the elastic arm 77, a vertical float of the inner blade 11 and a float gap E that allows the inner blade 11 to tilt left and right are secured.

  On the outer surface of the main body case 1, the wrinkle blade unit 7 is arranged. A moderation structure for engaging and holding the unit base 91 that slides up and down at a plurality of locations in the slide range is provided between the unit base 91 of the kakizori blade unit 7 and the main body case 1. The moderation structure includes a moderation piece 103 fixed to the inner surface of the unit base 91 and a plurality of moderation portions 106 formed in the main body case 1. The moderation piece 103 is provided with an elastically deformable moderation arm 110 that engages with the moderation portion 106 and a slide projection 112 that is guided by a guide groove 104 that is provided in the main body case 1 in the vertical direction.

  The battery 24 and the circuit board 25 are assembled to the inner frame 23. A switch mechanism for switching the energization state of the motor 15 is provided between the main body case 1 and the circuit board 25. The switch mechanism is provided between the slide knob 5 disposed on the outer surface of the main body case 1, the slide knob 5 and the main body case 1, an inner slide body 116 that slides along with the slide knob 5, and the inner slide An outer piece 117 that converts the reciprocating motion of the body 116 into a rotating motion, a switching terminal body 118 that is rotatably supported by the circuit board 25, and the body case 1, and the outer piece 117 is connected to the switching terminal body 118. And a pressing piece 119 that is pressed and held toward the head. The outer piece 117 is provided with an operation shaft portion 128 and a lever shaft 131 having a non-circular cross section. In a state where the outer piece 117 is assembled to the main body case 1, the operation shaft portion 128 protrudes inward from the inner surface of the main body case 1. In the process of assembling the drive unit 4 to the main body case 1, the lever shaft 131 rides relatively on the switching terminal body 118 and falls into the passive groove 136 provided in the switching terminal body 118 to engage with it.

  An engagement pin 146 and an engagement recess 147 that are engaged with each other are provided on the joint surface between the pressing piece 119 and the outer piece 117. The outer piece 117 is pressed and held by the pressing piece 119 in a state where the engaging pin 146 and the engaging recess 147 are engaged with each other.

  In the present invention, an assembly seat portion 50 is provided inside the main body case 1, and the fastening portion 28 of the inner frame 23 is supported from the lower surface side by the assembly seat portion 50, and the fastening portion of the vibrator 17 is attached to the fastening portion 28. 37 and the fastening portion 44 of the lid 40 were joined in order. Further, the fastening body 60, the vibrator 17, and the inner frame 23 are fastened and fixed to the main body case 1 by screwing the fastening screws 60 inserted through the fastening parts 28, 37, and 44 into the assembly seat part 50. . Thus, when the three members of the lid 40, the vibrator 17, and the inner frame 23 are fastened and fixed to the main body case 1 with one fastening screw 60, the three members can be fixed in a state of being positioned with the fastening screw 60. . Therefore, the positional relationship between the eccentric cam 16 of the motor 15 attached to the inner frame 23 and the cam groove 35 of the vibrator 17 can be always optimized to suppress the generation of noise (tapping sound). Further, the inner frame 23 can be particularly firmly fastened to the main body case 1 by fastening the fastening portions 28, 37, and 44 with fastening screws 60 screwed into the assembly seat portion 50. Therefore, as a whole, the fastening strength between the drive unit 4 and the main body case 1 can be improved and the electric razor can be solidified, and noises such as a tapping sound and a chatter noise of the case can be suppressed, and the electric razor can be silenced during use. . Furthermore, since the fixing of the motor 15, the inner frame 23, and the vibrator 17, that is, the driving part can be completed in the upper space of the main body case 1, the engagement accuracy between the eccentric cam 16 and the vibrator 17 is sufficiently high. Increased accuracy can suppress the generation of noise (tapping sound).

  The drive component fastening structure according to the present invention is not limited to a structure in which power conversion is performed by the eccentric cam 16 and the cam groove 35 of the vibrator 17, but includes a power conversion structure of another form. This also helps to optimize the positional relationship of each member in the electric razor. For example, in the case of an electric shaver that converts the rotational movement of the eccentric cam of the motor into a reciprocating movement by the lever and is transmitted to the vibrator, it corresponds to the eccentric cam of the motor, the connecting parts at both ends of the lever, and one of the connecting parts Thus, the positional relationship with the connection hole provided in the vibrator can be optimized to suppress the generation of noise (tapping sound). This type of electric shaver is disclosed in, for example, Japanese Patent Application Laid-Open No. 09-262378.

  When the assembly seat portion 50 is provided adjacent to the vicinity of the upper end of the motor holder portion 26, the motor holder portion 26 that is likely to be a source of vibration is firmly and stable with respect to the assembly seat portion 50. Can be concluded. Therefore, the drive unit 4 and the main body case 1 which are heavy in weight are fastened and fixed more firmly, and it is possible to well prevent chatter noises from being generated on the case wall of the main body case 1.

  When the first sound insulating wall 42 provided on the lid 40 and the peripheral wall 52 of the assembly port 8 of the main body case 1 cover the periphery of the vibrator 17 in an inner and outer double, the cam groove 35 of the vibrator 17 and the eccentric cam It is possible to well prevent the tapping sound generated between 16 and 16 from leaking out of the main body case 1. Accordingly, the electric razor during use can be silenced.

  In addition to the first sound insulation wall 42 and the peripheral wall 52 of the assembly port 8, when the second sound insulation wall 53 provided inside the main body case 1 covers the periphery of the vibrator 17 in three layers, the tapping sound is generated from the main body case 1. Leakage to the outside can be prevented more reliably, and thus the electric razor during use can be further silenced.

  A gap between the drive shaft 18 of the vibrator 17 and the lid wall 41, a gap around the fastening screw 60, and a gap between the first sound insulation wall 42 and the second sound insulation wall 53 are respectively provided in the first to third seals. Sealing with the bodies 57 to 59 can surely prevent noise from leaking from the previous gaps. Accordingly, the noise generated inside the transducer chamber R surrounded by the lid 40 is prevented from leaking out of the transducer chamber R, and the amount of external noise when using an electric razor is reduced. be able to. In addition, the vibrator chamber R surrounded by the lid body 40 is sealed with the first to third seal bodies 57 to 59 to remove the outer blade holder 20 and remove the fuzz chamber D and the inner blade 11. It is possible to wash and wash the hair adhering to the surface.

  When the attach / detach button 67 of the outer blade holder 20 is slidably guided by the slide window 47 provided on the lid wall 41 and the upper portion of the slide window 47 is covered with the packing presser plate 61, the fuzz in the fuzz chamber D is covered. The sanitary state can be maintained by preventing the body 40 from entering. In addition, the leakage of noise to the fluff chamber D side through the sliding window 47 can be blocked by the packing presser plate 61.

  If a pair of elastic arms 77 for tilt return are provided on the drive shaft 18 side and a pair of passive pieces 82 that are returned to the neutral position by the elastic arms 77 are provided on the inner blade 11 side, the change in the skin surface is followed. Thus, the inner blade 11 can be floated up and down and tilted left and right at the same time. Therefore, the skin contact of the main blade 10 at the time of shaving can be made soft. In addition, since the left and right tilting of the inner blade 11 is absorbed by elastically deforming the pair of left and right elastic arms 77, the inner blade 11 can be quickly returned to the neutral position, and the inner blade 11 tilted left and right is moved to the neutral position. The spring structure for the return operation can be simplified.

  When the passive piece 82 is provided with a contact portion 86 and an oblique flank 87 that absorbs the relative tilt of the elastic arm 77 and the passive piece 82, and a float gap E is secured between the inner blade 11 and the elastic arm 77, When the blade 11 tilts left and right, only the contact portion 86 can be brought into contact with the elastic arm 77. Accordingly, it is possible to prevent an excessive frictional force from acting on the elastic arm 77, and to quickly return the inner blade 11 to the neutral position while reducing the spring pressure of the float spring 88 and the elastic arm 77.

  When the moderation structure for the unit base 91 of the kirizori blade unit 7 is configured by the moderation piece 103 and the moderation portion 106 provided in the main body case 1, a moderation structure with a small number of parts can be obtained. Accordingly, the overall cost of the moderation structure can be reduced and the operation reliability can be improved.

  Regarding the switch mechanism for the motor 15, in the process of assembling the drive unit 4 to the main body case 1, the lever shaft 131 of the outer piece 117 is lifted relative to the switching terminal body 118 and then dropped into the passive groove 136. As a result, the switch mechanism can be easily assembled and disassembled. Specifically, simply by inserting and loading the drive unit 4 into the main body case 1, the lever shaft 131 of the outer piece 117 assembled to the main body case 1 and the passive groove 136 of the switching terminal body 118 provided on the circuit board 25, It can be assembled in a properly engaged state. Further, by simply pulling out the drive unit 4 from the main body case 1, the engagement state between the lever shaft 131 and the passive groove 136 is released, and the maintenance work can be easily performed with little effort. Further, since the outer piece 117 is pressed and held toward the switching terminal body 118 by the pressing piece 119, the outer piece 117 is reliably prevented from being pushed out of the case when the drive unit 4 is assembled to the main body case 1. Thus, the switch mechanism can be assembled more accurately.

  When the engaging pin 146 and the engaging recess 147 are provided on the joint surface between the pressing piece 119 and the outer piece 117, and the outer piece 117 is pressed and held by the pressing piece 119 in a state in which these both 146 and 147 are engaged with each other, It is possible to reliably prevent the piece 117 from floating. Accordingly, when the drive unit 4 is assembled to the main body case 1, it is possible to prevent the posture of the outer piece 117 from being changed due to an external force, and the lever shaft 131 and the passive groove 136 can be more reliably engaged. .

It is a vertical front view of the electric razor which concerns on this invention. It is a front view of the electric razor which concerns on this invention. It is a side view of the electric razor which concerns on this invention. It is a vertical side view of the electric razor which concerns on this invention. It is a front view of the state which decomposed | disassembled the main body case and the drive unit. It is a longitudinal front view shown in the state which decomposed the peripheral structure of a vibrator. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a vertical front view which shows the drive structure of an inner blade. It is a disassembled rear view which shows the moderation structure of a wrinkle blade unit. It is the front view which fractured | ruptured a part which shows switch structure. It is a vertical side view which shows a switch structure. It is a disassembled perspective view which shows a switch structure. It is a front view which shows the arrangement structure of a switch terminal.

(Embodiment) FIGS. 1 to 14 show an embodiment in which the present invention is applied to a reciprocating electric shaver. In this embodiment, front / rear, left / right, and upper / lower follow the crossing arrows shown in FIGS. 2 and 3 and the front / rear, left / right, and upper / lower indications shown in the vicinity of each arrow.

  In FIG. 2, the electric razor is accommodated in the cylindrical main body case 1, the grip case 2 attached to the outer surface of the main body case 1 from the lower surface side, the razor head 3 provided on the upper portion of the main body case 1, and the main body case 1. The drive unit 4 to be used is configured as a main structure. A slide knob 5 for starting the motor is disposed on the upper front surface of the main body case 1, and a light-emitting display unit 6 that displays an operation state and a charge state is disposed below the slide knob 5. As shown in FIG. 3, a wrinkle blade unit 7 is provided on the back side of the main body case 1. The opening on the upper surface of the main body case 1 is an assembly port 8 (see FIG. 5) for assembling the drive unit 4 and the like.

  As shown in FIGS. 2 and 4, a main blade 10 having an inner blade 11 and an outer blade 12 is arranged on the inner upper surface of the razor head 3. The inner blade 11 includes a blade body 13 having a slit blade structure and an inner blade frame 14 that holds the blade body 13 in an inverted U shape. The rotational power of the motor 15 is converted into reciprocating power by the eccentric cam 16 provided on the output shaft and the vibrator 17, and then the drive shaft 18 provided on the upper surface of the vibrator 17 and the connection attached to the drive shaft 18. It is transmitted to the inner blade 11 through the piece 73. The outer blade 12 includes a blade body 19 having a mesh blade structure and an outer blade holder 20 that holds the blade body 19 in an inverted U shape. The outer blade holder 20 is attached to and detached from a lid 40 described later. The main blade 10 is mainly used when cutting short hairs, and the wrinkle blade unit 7 is mainly used when cutting long hairs and comb hairs.

  As shown in FIGS. 4 and 5, an inner frame 23 is arranged inside the main body case 1, and the inner frame 23 includes a motor 15, a secondary battery (battery) 24, and a circuit board 25. The drive unit 4 is configured by assembling parts. The inner frame 23 is made of a plastic molded product having a motor holder portion 26 on the upper half side and a battery holder portion 27 integrally provided on the lower half side, and the circuit board 25 is formed on the front wall of the battery holder portion 27. Is fixed. Fastening portions 28 projecting upward are integrally formed on the left and right sides of the upper end of the motor holder portion 26, and fastening bosses 29 (see FIG. 5) are integrally formed on the left and right sides of the lower end of the inner frame 23. is there. As shown in FIG. 7, the fastening portion 28 is formed in a ship-shaped cross-sectional shape with a curved outer surface, and a screw insertion hole 30 is formed in a vertically penetrating manner at the front and rear center thereof. In addition, positioning pins 31 for positioning the vibrator 17 and the lid body 40 project from the front and back of the upper surface of the fastening portion 28.

  As shown in FIG. 6, the vibrator 17 includes a gate-shaped vibration frame 34, a cam groove 35 formed on the lower surface of the vibration frame 34, and a pair of front and rear that are continuous from the front and rear ends on both sides of the vibration frame 34. It consists of a plastic molded product integrally provided with an elastic arm 36 and a fastening portion 37 provided at the upper end of the elastic arm 36. The previous drive shaft 18 is integrally formed on the upper surface of the vibration frame 34. The outer shape of the fastening portion 37 in plan view is formed in the same shape as the fastening portion 28 of the inner frame 23, a screw insertion hole 38 is formed in the front and rear center thereof, and a positioning hole 39 is formed in the front and rear thereof. .

  By closing the assembly opening 8 of the main body case 1 with the lid body 40, it is possible to prevent mainly noise (tapping sound) generated between the eccentric cam 16 and the cam groove 35 from leaking out of the case. Yes. The lid body 40 is integrally provided with a lid wall 41 that closes the assembly port 8 and a first sound insulation wall 42 that projects downward from the lower surface of the lid wall 41. The lid wall 41 is formed so as to match the opening shape of the assembly port 8, and a vibration window 43 for exposing the drive shaft 18 of the vibrator 17 is opened at the center of the wall surface. A screw insertion hole 45 and a seal seat 46 are formed in the fastening portion 44. In addition, a sliding window 47 is formed adjacent to the fastening portion 44 to slidably guide a detachable button 67 described later. The first sound insulation wall 42 is formed in a circular shape so as to surround the vibrator 17, and its cross-sectional shape is formed in a rectangular shape with rounded four corners as shown in FIG. The first sound insulating wall 42 also has a flange wall projecting around the upper end. The outer blade holder 20 described above is attached to and detached from the lid body 40, and cooperates with the lid body 40 to partition the fuzz chamber D.

  In order to firmly fix the drive unit 4 to the main body case 1 and increase the fastening strength of both 1 and 4, assembly seats 50 are provided on the left and right sides of the main body case 1, and the fastening portions of the inner frame 23 are provided. The lower surface of 28 can be supported by the assembly seat portion 50. The assembly seat portion 50 is formed in a boss shape and is provided adjacent to the vicinity of the upper end of the motor holder portion 26, and a screw prepared hole 51 is formed therein. On the case wall between the assembly seat portion 50 and the peripheral wall 52 of the assembly port 8, a second sound insulation wall 53 that protrudes upward is provided in cooperation with the first sound insulation wall 42 to prevent leakage of noise. . As shown in FIG. 7, the second sound insulation wall 53 is formed to be slightly larger than the first sound insulation wall 42, and when the drive unit 4 is assembled to the main body case 1, both the sound insulation walls 42 and 53 are interposed through a small gap. It overlaps inside and outside. The front and rear walls of the second sound insulation wall 53 are integrated with the front and rear walls of the main body case 1.

  The drive unit 4, the vibrator 17, and the lid body 40 are assembled to the main body case 1 in the following manner. First, the drive unit 4 is loaded into the main body case 1, and the charging plug 55 provided at the lower end of the inner frame 23 is projected from the bottom wall of the main body case 1. In this assembled state, the peripheral surface of the fastening boss 29 is positioned by a positioning recess provided in the bottom wall of the main body case 1, and the lower surface of the fastening portion 28 is received by the assembly seat portion 50. In this state, a screw 56 (see FIG. 5) inserted from below the main body case 1 is screwed into the fastening boss 29 to temporarily fix the lower portion of the drive unit 4 to the main body case 1. Furthermore, the fastening portion 37 of the vibrator 17 and the fastening portion 44 of the lid body 40 are joined to the fastening portion 28 of the inner frame 23 in order, and the vibrator 17 and the lid are covered with the positioning pin 31 as shown in FIG. Position the body 40.

  Next, the first seal body 57 that seals the gap between the vibration window 43 and the drive shaft 18 is attached to the drive shaft 18 of the vibrator 17, and its peripheral wall is the upper surface of the peripheral wall of the vibration window 43. Adhere to. The ring-shaped second seal body 58 disposed on the seal seat 46 of the lid body 40 is disposed on the seal seat 46 of the lid body 40. The ring-shaped third seal body 59 that seals the gap between the first sound insulation wall 42 and the second sound insulation wall 53 is assembled to the first sound insulation wall 42 before the lid body 40 is assembled. In parallel, the detachable button 67 and the lock spring 68 constituting the lock structure for the outer blade holder 20 are assembled from the slide window 47 of the lid 40, details of which will be described later.

  Finally, after the packing retainer plate 61 formed by punching the stainless steel plate is placed on the upper surface of the lid body 40, the fastening screw 60 inserted through the screw insertion hole is screwed into the assembly seat portion 50, and the inner frame 23 and The vibrator 17, the lid body 40, and the packing presser plate 61 are fastened and fixed together. Further, the screw 56 is completely screwed into the fastening boss 29 to completely fix the lower part of the drive unit 4 to the main body case 1. Although not shown, the packing pressing plate 61 is positioned by four positioning pins provided on the upper surface of the lid wall 41 of the lid body 40. In FIG. 1, reference numeral 63 is a presser ring for the first seal body 57 and is press-fitted to the drive shaft 18. As shown in FIG. 1, the first sound insulation wall 42 in the assembled state enters the inside of the second sound insulation wall 53, so that the lid 40 and the second sound insulation wall 53 cause a vibrator between the two. A transducer chamber R that houses 17 is partitioned. The drive shaft 18 protrudes upward from the vibration window 43 in a state where the shaft portion is sealed by the first seal body 57. Thus, by sealing the vibrator chamber R with the first to third seal bodies 57, 58 and 59, the razor head 3 with the outer blade holder 20 removed can be washed with water.

  As described above, in the state where the drive unit 4 is fixed to the main body case 1 together with the vibrator 17 and the lid body 40, the circumference of the vibrator 17 is around the first sound insulation wall 42, the second sound insulation wall 53, and the assembly port 8. The wall 52 covers the inner and outer layers. Further, the gap between the vibration window 43 and the drive shaft 18 is sealed with the first seal body 57, and the gap between the first sound insulation wall 42 and the second sound insulation wall 53 is sealed with the third seal body 59. . Therefore, it is possible to well prevent the tapping sound generated between the eccentric cam 16 and the cam groove 35 from leaking out of the case.

  Further, the fastening portion 28 of the inner frame 23 is firmly fastened by the fastening screw 60 and the assembly seat portion 50, and the fastening boss 29 is drawn and fixed to the bottom wall of the main body case 1 by the screw 56. The entire drive unit 4 can be firmly fastened to the main body case 1. In addition, the fastening portion 28 of the inner frame 23 is positioned by the round shaft-shaped positioning shaft portion 62 of the fastening screw 60, and the vibrator 17 and the lid body 40 are positioned by the previous positioning shaft portion 62 and the positioning pin 31. The Therefore, the drive unit 4, the vibrator 17, and the lid body 40 are fastened in an appropriate state without being displaced with respect to the main body case 1, thereby improving the fastening strength between the drive unit 4 and the main body case 1. The electric razor can be hardened. Therefore, when viewed as a whole of the electric razor, it is possible to prevent the tapping sound from leaking out of the case and to suppress the vibration of the motor 15 and the inner blade 11 from being transmitted to the main body case 1 to generate chatter noise. The electric razor at the time can be silenced.

(Lock structure of outer blade holder)
The razor head 3 is provided with a lock structure that holds the mounting state of the outer blade holder 20. 1 and 6, the lock structure is assembled to the lid wall 41 and includes a detachable button 67 having a lock claw 66 that engages and disengages with the lock recess 65 of the outer blade holder 20, and the lock claw 66 is connected to the lock recess 65. It includes a lock spring 68 that moves and urges the detachable button 67 in the engaging direction. A slide piece 69 is integrally provided at the lower part of the inner surface of the detachable button 67, and inverted L-shaped lock claws 66 project outward from the front and rear ends of the slide piece 69. Further, a box-shaped spring receiving portion 70 that opens laterally is provided on the lower surface of the slide piece 69. The slide piece 69 is a peripheral wall on the upper side of the slide window 47, and the front and rear of the spring receiving portion 70 are guide walls projecting from the lower surface of the lid wall 41, and are slidably guided to the left and right.

  As described above, the outer blade holder 20 is assembled from the sliding window 47 with the lid 40 temporarily assembled, and between the first sound insulating wall 42 and the spring receiving portion 70 facing the wall 42. In addition, a lock spring 68 made of a compression coil spring is incorporated. In this assembled state, the lock claw 66 is engaged with the lock recess 65 to hold the outer blade holder 20 in an inseparable manner, and the button portion 71 of the detachable button 67 is notched in the outer blade holder 20. The button window 72 is exposed. When the left and right button parts 71 are pushed in against the urging force of the lock spring 68, the lock claw 66 is separated from the lock recess 65, so that the outer blade holder 20 can be removed from the lid 40.

  According to the lock structure configured as described above, after the attachment / detachment button 67 and the lock spring 68 are assembled to the lid body 40, the packing presser plate 61 may be fastened together with the other parts with the fastening screw 60. The body 40 and the detachable button 67 can be easily assembled. Further, in the state where the packing presser plate 61 is fastened to the lid body 40, the upper surface of the slide window 47 is covered with the packing presser plate 61 and the slide piece 69. It can be surely prevented from entering.

(Float structure of inner blade)
As described above, the reciprocating power of the vibrator 17 is transmitted to the inner blade 11 via the drive shaft 18, the connection piece 73 attached to the drive shaft 18, and the passive frame 74 connected to the lower surface of the inner blade frame 14. Be transmitted. As shown in FIG. 9, the connection piece 73 includes a connection base 75 that is fixed to the upper end of the drive shaft 18, a reverse portal holding frame 76 that projects from the front and back of the upper surface of the connection base 75, and a connection base. An elastic arm 77 protruding from the left and right of the upper surface of 75 and a drive arm 78 (see FIG. 4) for the squeeze blade unit 7 are integrally provided. The connecting piece 73 and the drive shaft 18 are integrated by fitting the boss on the lower surface of the connection base 75 to the upper end of the drive shaft 18 and fastening them 18 and 75 with screws 79. The elastic arm 77 is provided to return the inner blade 11 tilted left and right to the neutral position. The drive shaft 18 and the connecting piece 73 may be integrally formed. The inner blade frame 14 and the passive frame 74 may be integrally formed.

  The passive frame 74 is formed of a flat inverted triangular frame, and has a float shaft 81 supported by the holding frame 76 on the inner surface on the top side thereof, and elastic arms on both the left and right sides of the float shaft 81. A pair of passive pieces 82 received at 77 are provided. A spring receiving projection 83 is provided on the lower surface of the float shaft 81. A pair of engagement grooves 84 are formed on the left and right sides of the upper surface of the passive frame 74, and the engagement protrusions 85 provided on the left and right sides of the lower surface of the inner blade frame 14 are engaged with the grooves 84. Is integrated with the inner blade 11. The passive piece 82 includes a trapezoidal shaft body arranged parallel to the float shaft 81, a contact portion 86 that slides up and down relative to the elastic arm 77, and a relative tilt of the elastic arm 77 and the passive piece 82. An oblique flank 87 that absorbs water is provided. Between the inner blade 11 and the upper end of the elastic arm 77, a vertical gap of the inner blade 11 and a float gap E that allows the inner blade 11 to tilt left and right are secured.

  By fitting the float shaft 81 between the pair of holding frames 76, the inner blade 11 and the passive frame 74 can be slid up and down along the holding frame 76, and can be tilted left and right around the float shaft 81. . A float spring 88 made of a compression coil spring is disposed between the float shaft 81 and the connection base 75 of the connection piece 73. The float spring 88 attaches the inner blade 11 to the blade body 19 of the outer blade 12 in close contact. It also serves as a spring. The engaging force between the engaging groove 84 and the engaging protrusion 85 is set to be smaller than the engaging force between the float shaft 81 and the holding frame 76. Therefore, when the inner blade 11 is replaced, it is only necessary to separate the blade body 13 and the inner blade frame 14 from the passive frame 74, and the labor and cost required for replacing the inner blade 11 can be reduced.

  According to the float structure configured as described above, the main blade 10 can be floated up and down or tilted to the left and right at the same time following the change in the skin surface. It can be soft. The pair of left and right elastic arms 77 provided on the connecting piece 73 is elastically deformed to absorb the right and left tilt of the inner blade 11, so that the inner blade 11 can be quickly returned to the neutral position and the inner blade 11 tilted left and right is used. The spring structure for returning to the neutral position can be simplified. The passive piece 82 is provided with a contact portion 86 and an oblique flank 87, and a float gap is secured between the inner blade 11 and the elastic arm 77. Therefore, when the inner blade 11 tilts left and right, only the contact portion 86 of the passive piece 82 can be brought into contact with the elastic arm 77, so that an excessive frictional force can be prevented from acting on the elastic arm 77. The spring pressure of the arm 77 can be reduced.

  This type of float structure can be found in Japanese Utility Model Laid-Open No. 03-111264. There, a pair of left and right elastic members (plates) provided on the upper surface of the vibrator are further urged by pushing up the inner blade and the inner blade mounting base that supports the inner blade with a coil spring provided on the fixed shaft of the vibrator. The lower surface of the inner blade mounting base is supported by a spring so that when the moving direction of the inner blade reciprocating is reversed, the inner blade can be restrained from seesaw motion. However, in the float structure of Japanese Utility Model Publication No. 03-111264, when the inner blade sinks in a horizontal posture, the left and right elastic members are elastically deformed simultaneously, so that the float spring pressure acts strongly on the skin surface. It is easy to put a burden on. In that respect, according to the float structure described in the above embodiment, the elastic arm 77 and the passive piece 82 are in slidable contact with each other via the contact portion 86, so that the inner blade 11 remains in a horizontal posture. When sinking, the elastic arm 77 is not elastically deformed. Therefore, it is possible to eliminate the fact that the float spring pressure acts strongly on the skin surface, thereby eliminating the burden on the skin. That is, the elastic arm 77 acts to return the inner blade 11 tilted to the left or right to the neutral position.

(Moderation structure of Kiwasori blade unit)
4 and 10, the flute blade unit 7 is fixed to a scoop-shaped unit base 91, an inner frame 92 fixed to the upper inner surface of the base 91, and an inner upper surface of the inner frame 92. The fixed blade 93 and the movable blade 94 that slides along the lower surface of the fixed blade 93 are configured. A relay arm 95 that slides the movable blade 94 in the left-right direction is provided on the inner surface of the unit base 91. Engaging claws 97 that engage with the outer guide grooves (guide grooves) 96 of the main body case 1 and are slidably guided by the guide grooves 96 are provided on both side edges of the inner surface of the upper and lower middle portions of the unit base 91. . The relay arm 95 is supported by a pin 98 provided on the unit base 91 so as to be able to swing left and right. A passive pin 99 provided at the lower end of the relay arm 95 engages with a drive groove 100 provided on the rear surface of the previous drive arm 78. In the state, the reciprocating power is inherited and transmitted to the movable blade 94.

  The entire saw blade unit 7 can slide up and down between a standby position indicated by a solid line in FIG. 3 and a use position indicated by an imaginary line, at three positions: a standby position, a first use position, and a second use position. A moderation structure is provided between the unit base 91 and the main body case 1 in order to hold the position of the wrinkle blade unit 7. In the first use position, so-called combination shaving can be performed in which the shave blade unit 7 is positioned at substantially the same height as the main blade 10 and the main blade 10 and the sledge blade unit 7 are used in combination. In the second use position, as shown by an imaginary line in FIG. 3, the saw blade unit 7 can be used independently by projecting the saw blade unit 7 upward from the main blade 10. .

  The moderation structure includes a moderation piece 103 fixed to the inner surface of the unit base 91, an inner guide groove (guide groove) 104, a moderation guide surface 105, and a moderation guide surface 105 formed on the rear wall of the main body case 1. Each moderation concave portion (moderation portion) 106 is configured. The outer guide groove 96, the inner guide groove 104 that is long in the vertical direction, and the moderation guide surface 105 are formed by denting the rear wall of the main body case 1, respectively. The moderation piece 103 is provided at an ellipse-shaped welding base 109 that is vertically long, a partially arc-shaped elastically deformable moderation arm 110 that is extended from both upper sides of the welding base 109, and a continuous end of the moderation arm 110. And a pair of slide projections 112 provided on both sides of the lower portion of the welding base 109.

  By engaging the engaging claw 97 of the unit base 91 with the outer guide groove 96, the slide projection 112 of the moderation piece 103 is engaged with the inner guide groove 104, so that the entire blade unit 7 is The case 1 is supported so as to be vertically slidable. When the kakizori blade unit 7 is in the standby position, the moderation protrusion 111 is engaged with the lower moderation recess 106, and in this state, the passive pin 99 is separated from the drive groove 100 of the drive arm 78. Yes. In this state, the main blade 10 is used. When the kakizori blade unit 7 is pushed up to the first use position, the moderation protrusion 111 is engaged with the moderation recess 106 at the center of the upper and lower sides, and after this state, the passive pin 99 is engaged with the drive groove 100 of the drive arm 78. Therefore, the relay arm 95 transmits the reciprocating power of the drive arm 78 to the movable blade 94. When the scraper blade unit 7 is pushed up to the second use position, the moderation protrusion 111 engages with the upper moderation recess 106 and maintains that state. When the whisker cutting by the squeezing blade unit 7 is completed, the squeezing blade unit 7 is pulled down to return to the standby position.

  According to the moderation structure configured as described above, the outer guide groove 96, the inner guide groove 104, the moderation guide surface 105, the moderation recess 106 formed integrally with the main body case 1, and the moderation piece 103 fixed to the unit base 91, Thus, a moderation structure with a small number of parts can be configured. Accordingly, the overall cost of the moderation structure can be reduced and the operation reliability can be improved.

(Switch mechanism)
FIGS. 11 to 14 show a switch mechanism for switching the energized state of the motor 15 in conjunction with the vertical slide operation of the slide knob 5. The switch mechanism is rotationally operated by the slide knob 5, the inner slide body 116 that moves along with the slide knob 5, the outer piece 117 that converts the reciprocating motion of the inner slide body 116 into a rotational motion, and the outer piece 117. The switching terminal body 118 and the pressing piece 119 are used.

  A switch panel 115 is fixed to the front surface of the main body case 1, the slide knob 5 is disposed on the outer surface of the panel 115, and the inner slide body 116 is disposed on the inner surface of the panel 115. The slide knob 5 and the inner slide body 116 are integrated by melting and deforming three welding pins 120 protruding from the inner surface of the slide knob 5. As shown in FIG. 11, an operation arm 121 is provided on one side of the lower part of the inner slide body 116, and a moderation arm 122 is provided on the other side. The operation arm 121 and the moderation arm 122 are connected via an inverted U-shaped elastic arm 123, and when the moderation arm 122 gets over the moderation protrusion 124 provided on the switch panel 115, the elastic arm 123 is connected to the moderation arm 122. The moderation arm 122 is returned to a free state with the aid of elasticity. Reference numeral 125 is an operation pin for swinging the outer piece 117.

  As shown in FIG. 13, the outer piece 117 is integrally provided with a daruma-shaped lever portion 127 and an operation shaft portion 128 on the inner surface of the lever portion 127, and the lever piece 127 farthest from the operation shaft portion 128 is provided. Near the tip, a passive groove 129 that engages with the previous operation pin 125 is formed in a long hole shape. As shown in FIG. 12, the operation shaft portion 128 is inserted into a through hole 130 provided in the main body case 1 and protrudes inward from the inner surface of the main body case 1, and the shaft end has a substantially rectangular cross section. The lever shaft 131 is integrally provided. A seal ring 132 seals between the through hole 130 and the lever shaft 131.

  The switching terminal body 118 has a passive groove 136 that engages with the lever shaft 131 at the center of the outer surface of the oval terminal base 135, and a rotating shaft 137 at the center of the inner surface of the boss. They are provided integrally (see FIG. 13). Engagement legs 138 are provided at two upper and lower positions sandwiching the rotation shaft 137 therebetween. By engaging the rotation shaft 137 with the bearing hole 139 of the circuit board 25 and further engaging the engaging leg 138 with the partial arc-shaped guide groove 140 provided in the circuit board 25, the entire switching terminal body 118 is made. The circuit board 25 is rotatably supported. Connection terminals 141 and 142 for turning on and off the energization state of the motor 15 are provided on the opposing surfaces of the terminal base 135 and the circuit board 25, respectively.

  In order to engage the lever shaft 131 with the passive groove 136 using the operation when the drive unit 4 is inserted into the main body case 1, a guide notch 144 is formed on the lower side of the terminal base 135 and rides on the upper end thereof. A guide surface 145 for assisting the lifting operation is formed. The lever shaft 131 is guided by the guide notch 144 and comes into contact with the guide surface 145. After the tip of the lever shaft 131 gets over the guide surface 145 and rides on the terminal base 135, the lever shaft 131 moves to the passive groove 136. Dip into and engage. Further, by providing the separation guide surface 150 at the lower end of the passive groove 136, when the drive unit 4 is pulled out from the main body case 1, the tip of the lever shaft 131 gets over the separation guide surface 150 and rides on the terminal base 135. After that, it falls into the guide notch 144 and the engagement between the lever shaft 131 and the passive groove 136 is released.

  As described above, when the lever shaft 131 rides on the terminal base 135, the entire outer piece 117 is pushed out of the case. However, since the outer piece 117 is always pressed toward the inside of the case by the pressing piece 119, the outer piece 117 can be returned to the proper assembly position at the same time as the lever shaft 131 engages with the passive groove 136. Therefore, the lever shaft 131 and the passive groove 136 can be maintained in an appropriate engagement state, and the rotational movement of the outer piece 117 can be accurately transmitted to the terminal base 135.

  In order to press the outer piece 117 with the pressing piece 119 in a stable state, the engagement pin 146 provided at the tip of the pressing piece 119 engages with the engaging recess 147 provided in the lever portion 127 of the outer piece 117. Thus, the outer piece 117 is pressed and held by the pressing piece 119. A boss at the base end of the pressing piece 119 is fixed by a welding pin 148 provided on the main body case 1. Incidentally, this type of switch structure can be found in Japanese Patent Application Laid-Open No. 2005-177199. The boss at the base end of the pressing piece 119 can be fixed to the switch panel 115 in addition to being fixed to the main body case 1.

  In the above-described embodiment, the lever shaft 131 of the outer piece 117 gets over and engages with the passive groove 136 of the terminal base 135 after getting over the guide surface 145. The guide surface 150 may be omitted, and the passive groove 136 may be open. In short, in a state where the lever shaft 131 and the passive groove 136 are engaged, the outer piece 117 can be pressed toward the inside of the case by the pressing piece 119 so that the engagement state of the lever shaft 131 and the passive groove 136 can be stabilized. That's fine.

  In addition to the above embodiments, the vibrator chamber R can cover the vibrator 17 in a double-layered manner with the first sound insulating wall 42 and the peripheral wall 52 of the assembly port 8. In that case, the lower end of the first sound insulation wall 42 may be joined to the main body case 1 to prevent noise leakage. Moreover, if each of the 1st sound insulation wall 42 and the 2nd sound insulation wall 53 is extended and the length of the overlap part of both the sound insulation walls 42 and 53 is increased, the sound insulation effect can be improved further. The packing retainer plate 61 can be omitted. The first seal body 57 and the second seal body 58 can be integrally formed. In this case, most of the upper surface of the lid wall 41 is covered with the integrated seal body, and the lid wall 41 vibrates. Can be reduced. The second seal body 58 can be omitted.

  The present invention can also be applied to an electric razor in which a plurality of thin wires intersecting the cutting blade are arranged on the blade surface of the inner blade 11, that is, an electric razor in which the outer blade is omitted.

1 Body Case 4 Drive Unit 8 Assembly Port 15 Motor 17 Vibrator 23 Inner Frame 24 Battery (Secondary Battery)
28 Inner frame fastening portion 37 Vibrator fastening portion 40 Lid 42 First sound insulation wall 44 Lid fastening portion 50 Assembly seat portion 52 Peripheral wall 53 assembly sound insulation wall 60 Fastening screw 62 Positioning shaft portion

Claims (11)

Inside the cylindrical main body case (1) having the assembly port (8) on the upper surface, the motor (15), the inner frame (23) supporting the motor (15), and the rotational power of the motor (15) are transmitted. An electric razor that houses a vibrator (17) that converts to a reciprocating motion and whose assembly port (8) is closed with a lid (40);
An assembly seat portion (50) for supporting the fastening portion (28) of the inner frame (23) from the lower surface side is provided inside the main body case (1).
The fastening portion (37) of the vibrator (17) and the fastening portion (44) of the lid (40) are joined to the fastening portion (28) of the inner frame (23) in this order.
The fastening screw (60) inserted through each fastening portion (28, 37, 44) is screwed into the assembly seat portion (50), and the lid (40), the vibrator (17), and the inner frame (23) are An electric shaver characterized by being fastened together with the main body case (1) while being positioned with a fastening screw (60). A motor holder part (26) for mounting the motor (15) is provided on the upper part of the inner frame (23),
The electric shaver according to claim 1, wherein the assembly seat portion (50) of the main body case (1) is provided adjacent to the vicinity of the upper end of the motor holder portion (26). A first sound insulating wall (42) surrounding the vibrator (17) in a circular fashion is provided on the lower surface of the lid wall (41) provided on the upper surface of the lid (40).
The periphery of the vibrator (17) is covered with an inner and an outer double by the peripheral wall (52) of the assembly port (8) of the main body case (1) and the first sound insulating wall (42). Electric razor as described in Inside the main body case (1), a second sound insulation wall (53) surrounding the vibrator (17) in a circular shape is projected upward,
The surrounding wall (52) of the assembly port (8) of the main body case (1), the first sound insulation wall (42), and the second sound insulation wall (53) are arranged around the vibrator (17) in three layers. The electric shaver according to claim 3, which is covered with a metal. The drive shaft (18) of the vibrator (17) protrudes upward from the vibration window (43) opened in the lid wall (41) of the lid (40).
A first seal body (57) for sealing a gap between the drive shaft (18) and the vibration window (43) and a peripheral surface of the fastening screw (60) are sealed on the upper surface of the lid wall (41). A second seal body (58) is disposed;
The packing presser plate (61) disposed on the upper surfaces of both the first and second seal bodies (57, 58) is fastened together with fastening screws (60),
A gap between the first sound insulation wall (42) of the lid (40) and the second sound insulation wall (53) of the main body case (1) is sealed with a third seal body (59),
The vibrator chamber (R) surrounded by the lid (40) is sealed with a first seal body (57), a second seal body (58), and a third seal body (59). Item 5. The electric razor according to Item 4. The razor head (3) at the top of the main body case (1) has an outer blade holder (20) that supports the blade body (19) of the outer blade (12) and a lock that holds the mounting state of the outer blade holder (20). Structure is provided,
The lock structure includes a detachable button (67) having a lock claw (66) that engages and disengages with the outer blade holder (20), and a detachable button (66) in a direction in which the lock claw (66) engages with the outer blade holder (20). 67) and a lock spring (68) for moving and energizing
The detachable button (67) includes a button portion (71) exposed on the outer surface of the outer blade holder (20) and a spring receiver facing the first sound insulating wall (42) below the lid wall (41) of the lid (40). Part (70),
The detachable button (67) is slidably guided by a sliding window (47) provided on the lid wall (41), one end of the lock spring (68) is received by the spring receiving portion (70), and the other end is It is received by the first sound insulation wall (42),
The electric shaver according to claim 5, wherein the upper part of the sliding window (47) is covered with a packing presser plate (61). The drive shaft (18) of the vibrator (17) and the inner blade (11) are connected via a float structure that can freely float up and down, and the inner blade (11) is a float spring (88) and the outer blade (12). Is pressed and urged in the direction of close contact with
A pair of left and right elastic arms (77) for returning the inner blade (11) tilted left and right to the neutral position are provided on the drive shaft (18) side,
The pair of passive pieces (82) according to claim 5 or 6, wherein a pair of passive pieces (82) which are brought into contact with the elastic arm (77) and are returned to the neutral position by the elastic arm (77) are provided on the inner blade (11) side. Electric razor. The passive piece (82) has a contact portion (86) that slides relative to the elastic arm (77) up and down, and an oblique flank that absorbs the relative tilt of the elastic arm (77) and the passive piece (82). 87) and
An upper and lower float of the inner blade (11) and a float gap (E) allowing the inner blade (11) to tilt left and right are secured between the inner blade (11) and the upper end of the elastic arm (77). The electric razor according to 7. On the outer surface of the main body case (1), a wrinkle blade unit (7) is arranged,
A moderation structure is provided between the unit base (91) and the main body case (1) of the wrinkle blade unit (7) for engaging and holding the unit base (91) that slides up and down at a plurality of positions in the slide range. And
The moderation structure is composed of a moderation piece (103) fixed to the inner surface of the unit base (91) and a plurality of moderation portions (106) formed in the main body case (1).
An elastically deformable moderation arm (110) that engages with the moderation portion (106), and a sliding protrusion that is guided by a longitudinally long guide groove (104) provided in the body case (1). The electric razor according to claim 1, wherein (112) is provided. The drive unit (4) is configured by assembling the battery (24) and the circuit board (25) to the inner frame (23),
A switch mechanism is provided between the body case (1) and the circuit board (25) to switch the energization state of the motor (15).
A slide knob (5) disposed on an outer surface of the main body case (1);
An inner slide body (116) provided between the slide knob (5) and the body case (1) and sliding along with the slide knob (5);
An outer piece (117) for converting the reciprocating motion of the inner slide body (116) into a rotating motion;
A switching terminal body (118) rotatably supported by the circuit board (25);
A pressing piece (119) for pressing and holding the outer piece (117) toward the switching terminal body (118),
The outer piece (117) is provided with an operation shaft portion (128) and a lever shaft (131) having a non-circular cross section. When the outer piece (117) is assembled to the main body case (1), the operation shaft Part (128) protrudes inward from the inner surface of the main body case 1,
In the process of assembling the drive unit (4) to the main body case (1), the lever shaft (131) rides relatively on the switching terminal body (118), and the passive groove (136) provided on the switching terminal body (118). The electric razor according to claim 1, wherein the electric razor is depressed and engaged. An engagement pin (146) that engages with each other and an engagement recess (147) are provided on the joint surface of the pressing piece (119) and the outer piece (117).
The electric shaver according to claim 10, wherein the outer piece (117) is pressed and held by the pressing piece (119) in a state where the engaging pin (146) and the engaging recess (147) are engaged with each other.

Images