JP2018183496A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric razor that optimizes a vibrator structure such that a pair of inner blades can be reciprocated in opposite directions always with proper stroke and can precisely cut whiskers without causing transmission loss even when cutting load is increased.SOLUTION: A pair of vibrators 16 and 17 for driving movable blades 21 and 22 of a pair of cutting blades 11 and 12 are arranged inside a head case 15. A power conversion mechanism for converting rotational power of a motor 6 into reciprocation power is provided between the motor 6 and the pair of vibrators 16 and 17. The pair of vibrators 16 and 17 are reciprocatably driven in opposite directions to one another by the reciprocation power output from the power conversion mechanism. At least one of vibrators 16 and 17 is relatively slidably guided and supported by guide seats 51 and 52 provided in the other of vibrators 16 and 17. A transmission link 38 for transmitting reciprocation motion of the one vibrator 17 to the other vibrator 16 is provided between the pair of vibrators 16 and 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a reciprocating electric shaver that performs a whisker cutting by reciprocally driving a pair of inner blades in opposite directions.

  This type of electric razor is disclosed in Patent Document 1, for example. In the electric razor described in Patent Document 1, the entire cutter head (razor head) swings along a direction (front-rear direction) perpendicular to the longitudinal direction of the inner blade body, with a support provided at the upper part of the main body case. Supported as possible. The cutter head includes a cutter base, a pair of driver elements (vibrators), a pair of inner blade bodies, a pair of coil springs, an outer blade body, and a connecting lever. A cam engagement portion having a half-moon shaped motion conversion groove is integrally provided on the lower surface of one of the driver elements, and the cam engagement portion is reciprocally driven by an eccentric cam fixed to the output shaft of the motor. . Further, the reciprocating operation of the one driver element is transmitted to the other driver element via a connecting lever so that the pair of driver elements can be driven to reciprocate while being synchronized in opposite directions with respect to the corresponding outer blades. It is configured.

  The cutter base is formed in a hollow shape with a head frame and a bottom wall that closes the lower surface opening of the frame, and a pair of driver elements and a connecting lever are accommodated therein. Each driver element is formed of a plastic molded product integrally including a thick base portion, a thin flexible deformable portion connected to both ends of the base portion, and a fixed end portion connected to the upper end of the flexible deformable portion. The fixed end portions on both sides are respectively supported by screw receiving bosses protruding from the upper surface of the bottom wall, and are fastened together with screws screwed into the screw receiving bosses from the upper surface side of the head frame. Further, fork portions that engage with the respective drive elements are formed on the front and rear sides of the connecting lever, and the fitting shaft portion provided at the front and rear center of the connecting lever is pivotally supported by the pivot provided on the inner surface of the upper wall of the head frame. It is held inseparable by a retaining ring attached to the lower end of the pivot. A long window hole is opened in the front and rear of the bottom wall, and the cam engaging portion from the window hole is exposed to the main body case side.

Japanese Patent Laid-Open No. 06-054965 (paragraph number 0010, FIG. 5)

  According to the electric razor of Patent Document 1, since the pair of drive elements are reciprocally driven in opposite directions in a synchronized state, the movement inertia forces of the individual drive elements cancel each other, and the pair of drive elements are reciprocated. Can reduce the vibration of the cutter head. However, the fixed end portions provided on both sides of each driver are individually fastened to the screw receiving boss, and the thin flexible deformation portion and the base portion are supported in a suspended manner. Therefore, when a strong pressing load (skin reaction force) is applied to the vibrator through the outer blade body and the inner blade body, the vibrator may sink and partly deform or be damaged.

  Further, according to the electric razor of Patent Document 1, since the cutter head is supported by the support base so as to be swingable in the front-rear direction, the whiskers can be cut while the cutter head is swung back and forth. However, the cutter head is supported by the support base so as to be able to swing back and forth, and since the degree of freedom of tilting operation when the cutter head follows the skin surface is low, the cutter head is tilted following the skin surface. This makes it difficult to use the shaver while frequently changing the grip of the electric razor.

  The object of the present invention is to realize the optimization of the vibrator structure, so that the pair of inner blades can always be reciprocally driven in opposite directions with an appropriate stroke, and therefore transmission loss may occur even when the cutting load increases. Therefore, an object is to provide an electric razor that can accurately perform whisker cutting.

  In the present invention, the razor head 2 is provided with a pair of front and rear cutting blades 11 and 12 having movable blades 21 and 22 and fixed blades 23 and 24, and a pair of vibrators 16 and 17 for driving the movable blades 21 and 22, respectively. Is disposed inside a head case 15 provided in the razor head 2, and a power conversion mechanism for converting the rotational power of the motor 6 into reciprocating power is provided between the motor 6 and the pair of vibrators 16 and 17. The reciprocating razors 16 and 17 are reciprocating power output from the power conversion mechanism, and the reciprocating electric razor is driven reciprocally in opposite directions. At least one of the vibrators 16 and 17 is supported by guide seats 51 and 52 provided on the other vibrator 16 and 17.

  As shown in FIG. 1, the power conversion mechanism includes an eccentric cam 54 fixed to the output shaft of the motor 6 and a passive portion 53 provided on one vibrator 17 and driven to reciprocate by the eccentric cam 54. A transmission body 38 is provided between one vibrator 17 and the other vibrator 16 to transmit the reciprocating motion of the one vibrator 17 to the other vibrator 16. The transmission body can be constituted by a transmission link 38 shown in FIG. 5 or a pinion-rack mechanism shown in FIG.

  As shown in FIG. 4, the head case 15 includes an upper head case 36 and a lower head case 37. A central portion of the transmission link 38 provided between the upper surfaces of the pair of vibrators 16 and 17 is pivotally supported by a swing shaft body 56 projecting downward from the upper head case 36 so as to be reciprocally swingable. A presser body 62 is provided in the upper head case 36 to restrict the upward movement of the transmission link 38.

  The presser body 62 is configured by a restriction protrusion formed integrally with the upper head case 36.

  As shown in FIG. 4, the swing shaft body 56 includes a shaft portion 60 that pivotally supports the transmission link 38, and a step portion 61 that is formed around the upper end of the shaft portion 60. The step portion 61 is in contact with the upper surface of the transmission link 38 and restricts upward movement of the transmission link 38.

  One vibrator 17 provided with the passive portion 53 is guided and supported by a first guide seat 51 provided in the lower head case 37 so as to be slidable left and right. The other vibrator 16 is guided and supported by a second guide seat 52 provided on one vibrator 17 so as to be slidable left and right.

  Slide frame portions 16b and 17b are formed on the pair of vibrators 16 and 17, respectively. The slide frame portions 16b and 17b are slid and guided by a pair of guide shafts 48 and 50 attached to the head case 15, and the vibrators 16 and 17 are guided and supported so as to be slidable in the left and right directions.

  As shown in FIG. 14, a U-shaped receiving recess 97 as viewed from above is formed on the upper surface of the upper head case 36, and a U-shaped light emitting substrate 98 as viewed from above is received inside the receiving recess 97. To do. A light source 99 that irradiates light toward the movable blades 21 and 22 is mounted on each of the left and right plate surfaces of the light emitting substrate 98. The upper opening of the housing recess 97 is closed by a U-shaped translucent cover body 100 as viewed from above.

  The upper surface of the cover body 100 is covered with a protective plate 101 fixed to the upper head case 36. A light guide portion 102 provided on the cover body 100 corresponding to the light source 99 protrudes above the irradiation window 107 opened in the protective plate 101 (see FIG. 1).

  A motor case 65 that supports the motor 6 is disposed inside the main body case 1. The razor head 2 is supported by a swing frame 66 fixed to the motor case 65 so as to swing back and forth. The swing frame 66 includes a mounting seat 72 joined to the upper surface of the motor case 65 and a pair of head arms 73 standing from both side ends of the mounting seat 72, and the upper end of the arm 73 is provided in the head case 15. The pair of left and right swing brackets 44 are connected to each other via a first shaft 71 so as to be relatively swingable (see FIGS. 8 and 9). A mounting piece 74 projecting downward from the front and rear of the mounting seat 72 is received and supported by a piece receiving seat 75 provided on the front and rear surfaces of the motor case 65, and the swing frame 66 is supported by the motor case 65.

  As shown in FIG. 11, the attachment piece 74 is formed by a piece base portion 74 a that extends continuously in the front-rear direction to the mounting seat 72 and a fastening portion 74 b that extends downward in a continuous manner to the piece base portion 74 a. The fastening portion 74 b is fastened and fixed to the piece receiving seat 75 by the fastening body 76 in a state where the piece base portion 74 a is engaged and held by the engaging portion 77 provided in the motor case 65.

  The restriction notches 78 formed facing the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by restriction protrusions 79 protruding from the left and right of the upper surface of the motor case 65.

  The control board 8 arranged inside the main body case 1 and the light emitting board 98 arranged in the housing recess 97 of the upper head case 36 are connected via a plurality of lead wires 103. Midway portions of the plurality of lead wires 103 are inserted into lead insertion holes 80 that vertically penetrate the regulation protrusions 79.

  As shown in FIG. 8, the razor head 2 and the motor case 65 are supported in a floating manner by an elastic support structure provided between the motor case 65 and the main body case 1. The elastic support structure includes a pair of left and right lower spring seats 68 provided on the main body case 1, a pair of upper spring seats 69 provided on the left and right side surfaces of the motor case 65 corresponding to the lower spring seat 68, and both these springs. A floating spring 70 is disposed between the seats 68 and 69 to push up and bias the motor case 65.

  As shown in FIG. 3, a second shaft 83 is provided on the front and rear surfaces of the motor case 65 below the upper spring seat 69 so as to support the razor head 2 and the motor case 65 so as to be able to swing left and right. A floating groove 84 for floatingly supporting the second shaft 83 is formed inside the main body case 1.

  As shown in FIG. 13, a container-like terminal packing 89 that seals the lead terminal 88 of the motor 6 in a watertight manner is attached to the lower portion of the motor case 65. The mounting portion of the terminal packing 89 is closely fixed to the motor case 65 by a fixing ring 91 that is externally fitted to the terminal packing 89. The connecting arms 92 provided at a plurality of locations around the fixing ring 91 are fixed to the motor case 65 through engaging holes 93 and engaging convex portions 94 that engage with each other in a concave and convex manner.

  In addition to the pair of cutting blades 11 and 12, the razor head 2 is provided with a sub-blade 14 for rough shaving provided with a movable blade 29 and a fixed blade 31. As shown in FIG. 19, the movable blade 29 of the sub blade 14 is reciprocally driven simultaneously by the vibrator 17 for the adjacent cutting blade 12. The fixed blade 31 of the sub blade 14 is composed of a slit blade, and includes a cutting region R1 where the movable blade 29 is in sliding contact and a raised region R2 where the movable blade 29 is not in sliding contact. A protruding hair-promotion part 123 is formed in the hair raising region R2.

  A slit 31d is formed in the raised region R2 of the fixed blade 31 of the sub blade 14 (see FIG. 18).

  A slit 31b formed in the cutting region R1 of the fixed blade 31 of the sub blade 14 and a slit 31d formed in the raised region R2 of the fixed blade 31 for rough shaving are continuous in the front-rear direction.

  In the electric shaver according to the present invention, a pair of vibrators 16 and 17 are arranged inside the head case 15, and the vibrators 16 and 17 are driven to reciprocate in opposite directions by the reciprocating power output from the power conversion mechanism. I tried to do it. Further, at least one of the vibrators 16 and 17 is supported by guide seats 51 and 52 provided on the other vibrator 16 and 17. According to such a vibrator structure, even when a strong pressing load (skin reaction force) is applied to the vibrators 16 and 17 via the cutting blades 11 and 12, one vibrator 16 and 17 is connected to the other vibrator 17.・ 16 can be received and supported. Therefore, it is possible to well prevent a part of the vibrators 16 and 17 from being deformed or damaged.

  The eccentric cam 54 driven by the motor 6 and the passive portion 53 provided on one vibrator 17 constitute a power conversion mechanism, and the reciprocating operation of one vibrator 17 is transmitted to the other vibrator 16 via the transmission body 38. I tried to transmit. According to such a transmission structure, the reciprocating motion of the vibrator 17 driven reciprocally by the power conversion mechanism is reliably transmitted to the other vibrator 16 via the transmission body 38, and the movable body corresponding to each vibrator 16 and 17 is transmitted. The blades 21 and 22 can be reciprocated in opposite directions. Further, since the reciprocating motion of at least one of the vibrators 16 can be defined by the guide seat 52 and the transmission body 38, the vibrator 16 can always be properly reciprocated to cut the whiskers more effectively.

  The upper head case 36 and the lower head case 37 constitute the head case 15, and the transmission link 38 provided between the upper surfaces of the pair of vibrators 16 and 17 is reciprocally shaken by the swing shaft body 56 provided in the upper head case 36. It was supported so that it could move. Further, the upward movement of the transmission link 38 can be restricted by the presser body 62 provided in the upper head case 36. According to such a transmission structure, the number of parts can be reduced as compared with the case where the swing shaft body 56 and the presser body 62 are separately provided as independent parts, and the transmission link 38 can be swung without using a retaining ring. Therefore, the support structure of the transmission link 38 can be simplified and the cost can be reduced. Further, since the transmission link 38 provided between the upper surfaces of the vibrators 16 and 17 is held by the presser body 62, there is no room for the transmission links 38 to be lifted off from the vibrators 16 and 17, so that the transmission link 38 is reciprocated. Transmission of movement can be performed more reliably.

  When the presser body 62 is configured by a restriction protrusion formed integrally with the upper head case 36, the support structure of the transmission link 38 is simplified and reduced as compared with the case where the presser body 62 is formed as an independent part. Cost can be reduced. There is also an advantage that the labor of assembling can be reduced.

  The swing shaft body 56 is provided with a shaft portion 60 and a step portion 61 that pivotally support the transmission link 38, and the step portion 61 contacts the upper surface of the transmission link 38, so that upward movement of the transmission link 38 can be restricted. I did it. In this way, when the swinging center of the transmission link 38 is received by the step portion 61 and the upward movement of the link 38 is restricted, the swinging resistance acting on the transmission link 38 is minimized, and the transmission link 38 is Smooth and accurate reciprocation can be achieved. Therefore, transmission of the reciprocating motion between the adjacent vibrators 16 and 17 can be performed more accurately.

  One vibrator 17 provided with the passive portion 53 is guided and supported by a first guide seat 51 provided in the lower head case 37, and the other vibrator 16 is provided by a second guide seat 52 provided in one vibrator 17. The guide is supported so that it can slide left and right. According to such a vibrator structure, each of the pair of vibrators 16 and 17 can be guided and supported by the first guide seat 51 and the second guide seat 52, so that it is strong against the vibrators 16 and 17 through the cutting blades 11 and 12. Even when a pressing load (skin reaction force) is applied, it is possible to more reliably prevent a part of the vibrators 16 and 17 from being deformed or damaged. Further, the loss of motor power and the reduction of the drive stroke of the movable blades 21 and 22 are eliminated, and the beard cutting can be performed more effectively.

  When the slide frame portions 16b and 17b provided on the pair of vibrators 16 and 17 are slid and guided by the pair of guide shafts 48 and 50, the vibrators 16 and 17 can be guided and supported positively in a state where only the left and right slides are possible. it can. Therefore, when the cutting load of the cutting blades 11 and 12 is increased, the vibrators 16 and 17 are restricted from moving in the front-rear direction and the diagonal direction, and the movable blades 21 and 22 are always opposite to each other with an appropriate stroke. The whisker can be accurately cut by reciprocating.

A U-shaped housing recess 97 is formed in the upper surface of the upper head case 36, a U-shaped light emitting substrate 98 is housed therein, and the upper opening of the housing recess 97 is covered with the U-shaped cover body 100. Closed. As described above, when the light emitting structure is provided inside the razor head 2, the light source 99 provided on the light emitting substrate 98 is turned on when shaving, so that the movable blades 21 and 22 and the fixed blades 23 and 24 and the periphery of the razor head 2 are provided. Since the wall can be brightly illuminated with the light emitted from the light source 99, the whisker can be cut in an entertaining state. Further, when the photocatalyst is coated on the movable blades 21 and 22 and the fixed blades 23 and 24, the photocatalyst can be effectively excited by the light irradiated from the light source 99 to exert a sterilizing action. Furthermore, the power consumption state of the secondary battery 7 can be clearly recognized by changing the light emission state of the light source 99 according to the remaining charge of the secondary battery 7. Since the light-emitting substrate 98 is formed in a U-shape and the light source 99 is mounted on a plate surface separated from the left and right, it is sufficient to prepare a single light-emitting substrate 98 on which a plurality of light sources 99 are mounted. Compared with the case where the light sources 99 are individually provided at the left and right portions of the upper head case 36, the structure of the light emitting structure can be simplified and the cost can be reduced.

  The upper surface of the cover body 100 was covered with the protection plate 101, and the light guide portion 102 provided on the cover body 100 was projected above the irradiation window 107 of the protection plate 101. According to such a light emitting structure, the shavings dropped on the upper surface of the light guide unit 102 are dropped to the upper surface side of the protective plate 101 by the movement of the razor head 2 tilting back and forth, left and right, and the reciprocating vibration operation of the cutting blades 11 and 12. Thus, it is possible to prevent the light guide unit 102 from being covered with fuzz. Further, since the upper surface of the cover body 100 not facing the irradiation window 107 is covered with the protective plate 101 and shielded from light, the inside of the razor head 2 is effected by spotlight-like local light emitted from the light guide 102. Can be illuminated.

  A motor case 65 is disposed inside the main body case 1, and a head arm 73 of a swing frame 66 fixed to the motor case 65 and a pair of swing brackets 44 provided on the lower head case 37 are connected via a first shaft 71. The razor head 2 was supported so as to be able to swing back and forth. The mounting piece 74 projecting downward from the mounting seat 72 of the swing frame 66 is received and supported by the piece receiving seats 75 provided on the front and rear surfaces of the motor case 65, and the swing frame 66 is supported by the motor case 65. Supported to be unable to tilt forward and backward. According to such a head support structure, the external force moment acting on the head arm 73 can be reliably received by the motor case 65, so that the razor head 2 can be supported in a stable state. In addition, the razor head 2 can be tilted back and forth along the skin surface as intended by the user to smoothly cut the beard.

  A mounting base 74 is formed by a piece base 74a continuous to the mounting seat 72 and a downward fastening part 74b continuous to the piece base 74a, and the piece base 74a is engaged and held by an engagement portion 77 provided on the motor case 65. Thus, the fastening portion 74 b is fastened and fixed to the piece receiving seat 75 by the fastening body 76. According to such a fixing structure, the rocking frame 66 can be more firmly integrated with the motor case 65, so that the razor head 2 can be supported in a more stable state.

  When the restriction notches 78 formed at the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the restriction projections 79 protruding from the motor case 65, the external force moment acting on the head arm 73 is also applied to the restriction projections 79. Can be distributed and burdened. Therefore, the oscillating frame 66 can be more firmly integrated with the motor case 65 to support the razor head 2 in a more stable state.

  When a midway part of the lead wire 103 provided between the control board 8 and the light emitting board 98 is inserted into a lead insertion hole 80 formed in the restricting projection 79, when the razor head 2 tilts back and forth, the midway part of the lead wire 103 is It can be prevented from being caught by another object or being crushed by being caught in a gap. Further, the lead wire 103 between the light emitting substrate 98 and the restricting projection 79 can be smoothly bent and displaced following the tilting operation of the razor head 2. Accordingly, it is possible to prevent the razor head 2 from being interrupted by the lead wire 103 while the razor head 2 can be prevented from being disconnected due to repeated external force acting on the middle portion of the lead wire 103 as the razor head 2 is tilted back and forth. it can.

  The razor head 2 and the motor case 65 were supported in a floating manner by an elastic support structure provided between the motor case 65 and the main body case 1. The elastic support structure includes a lower spring seat 68 provided in the main body case 1, an upper spring seat 69 provided in the motor case 65, and a floating spring 70 disposed between the two spring seats 68 and 69. I made it. As described above, when the razor head 2 and the motor case 65 are supported by the elastic support structure, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk into the main body case 1 side, and the skin surface is excessive. The floating spring 70 can relax and absorb the pressing force. Further, at the time of cutting the beard, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 can follow the change in the skin surface even on a three-dimensional skin surface such as around the jaw. And can adhere. Therefore, whisker cutting can be performed accurately while softening the skin contact at the time of cutting the beard.

  When the second shaft 83 is provided in the front and rear of the motor case 65 and the coaxial 83 is floated and supported by the floating groove 84 provided in the main body case 1, the razor head 2 and the motor case 65 are supported so as to be able to swing left and right and tilt forward and backward. it can. According to such an electric razor, the razor head 2 can be floated in all directions of front and rear, left and right, and up and down, and the degree of freedom of tilting operation of the razor head 2 can be improved. An electric shaver with excellent usability that can be cut can be provided.

  A terminal packing 89 for sealing the lead terminal 88 of the motor 6 was attached to the lower part of the motor case 65. In addition, the mounting portion of the terminal packing 89 is closely fixed to the motor case 65 by the fixing ring 91, and the motor case is formed by the engaging hole 93 and the engaging convex portion 94 that engage the connecting arm 92 provided on the fixing ring 91. It was fixed to 65. According to such a sealing structure, the terminal packing 89 is attached to the lower portion of the motor case 65, and the fixing ring 91 is fitted on the mounting portion of the terminal packing 89 to fix the terminal packing 89 to the motor case 65. Thus, the periphery of the lead terminal 88 can be sealed in a watertight manner. Therefore, even when the washing water enters the main body case 1 when washing the razor head 2 with water, the lead terminal 88 or the lead wire 87 connected to the terminal 88 is surely prevented from being short-circuited. it can. Further, the fixing ring 91 can be fixed to the motor case 65 in an inseparable manner by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engagement hole 93 and the engagement projection 94. . Therefore, for example, even when a drop impact acts on the main body case 1, the fixing ring 91 and the terminal packing 89 are prevented from being separated from the motor case 65, and the sealing function by the terminal packing 89 is ensured. Can be maintained.

  The fixed blade 31 of the sub blade 14 formed of a slit blade is provided with a cutting region R1 in which the movable blade 29 is in sliding contact and a raised region R2 in which the movable blade 29 is not in sliding contact. 123 is formed. According to the fixed blade 31 of the sub blade 14, since the hair surface and the long hair can be effectively brushed by denting the skin surface with the brushing promoting portion 123, the combed hair and long hair in the raised region are cut in the cutting region R1. Can be cut and shortened.

  If the slit 31d is formed in the raising region R2 of the fixed blade 31, it is possible to prevent the hairs or long hairs raised by the raising promotion part 123 from being introduced into the slit 31d and falling into the skin surface. Further, the hairs and long hairs captured by the slit 31d can be guided to the cutting region R1 while being raised and cut.

  When the slit 31b formed in the cutting region R1 and the slit 31d formed in the raised region R2 are continuous in the front-rear direction, the raised hair captured in the slit 31d remains in the raised state while being raised Guide to the slit 31d on the R2 side. Therefore, it is possible to cut hairs and long hairs with more certainty and shorten hairs.

It is a vertical front view of the razor head which comprises the electric razor which concerns on Example 1 of this invention. 1 is a front view of an electric razor according to Embodiment 1. FIG. It is a partially broken side view of a motor support structure. It is a vertical side view of a razor head. It is a disassembled perspective view of a vibrator structure. It is an exploded plan view of a vibrator structure. It is a top view which shows the reciprocating motion of a vibrator | oscillator. It is a front view of an elastic support structure. It is a disassembled front view of a head support structure. It is a partially broken front view of a motor support structure. It is the sectional view on the AA line in FIG. It is a side view of a motor support structure. It is a vertical front view which shows the mounting structure of terminal packing. It is a disassembled perspective view of a light emission structure. It is a top view of a light emitting structure. It is the BB sectional view taken on the line in FIG. It is sectional drawing which shows the seal structure of a lead wire. It is a top view which shows the detailed structure of a sub blade. It is CC sectional view taken on the line in FIG. It is a vertical side view which shows the vibrator structure of the electric razor which concerns on Example 2 of this invention. It is a vertical side view which shows the vibrator structure of the electric razor which concerns on Example 3 of this invention. It is a vertical side view which shows the vibrator structure of the electric razor which concerns on Example 4 of this invention. It is a top view which shows the transmission body structure of the electric shaver which concerns on Example 5 of this invention.

Example 1 FIGS. 1 to 19 show Example 1 of an electric shaver according to the present invention. In the present embodiment, front and rear, left and right, and up and down follow the cross arrows shown in FIG. 2 and FIG. In FIG. 2, the electric razor comprises a main body case 1 that also serves as a grip, and a razor head 2 that is supported by the main body case 1 so as to be able to swing back and forth, to the left and right, and to be movable in the vertical direction. . The razor head 2 is provided on the upper part of the main body case 1. A lever-like switch member 4 for switching the operating state of the electric razor and a display unit 5 for displaying the operating state of the electric razor are provided above and below the front surface of the main body case 1. A motor 6, a secondary battery 7, a control board 8, and the like are disposed inside the main body case 1, and a shaving blade 9 is provided on the upper rear surface of the main body case 1 (see FIG. 3). The inside of the main body case 1 is divided into an upper compartment 1A that accommodates the motor 6, the motor case (support base) 65, and the like, and a lower compartment 1B that accommodates the secondary battery 7, the control board 8, the LED 99, and the like. That is, the upper section 1 </ b> A is a motor housing section that houses the motor 6 that drives the movable blades 21 and 22 and the motor case 65 that supports the motor 6. The lower compartment 1B is an electrical component housing compartment that houses electrical components such as a secondary battery (power supply unit) 7 that supplies power to the LED 99 and the motor 6, and a control circuit 8 on which a control circuit and the secondary battery 7 are mounted. It has become.

(Razor head)
3 and 4, the razor head 2 is provided with a pair of front and rear main blades (cutting blades) 11 and 12, and two sub-blades (trimmer blades) 13 and 14 for rough shaving. A head case 15 is provided inside the razor head 2, and a pair of front and rear vibrators 16, 17 that reciprocally drive the respective blades 11 to 14 are disposed inside the case 15. A light emitting structure is provided on the side. The main blades 11 and 12 are composed of movable blades 21 and 22 made of slit blades and fixed blades 23 and 24 made of mesh blades, and mainly finishes and cuts short hairs. The movable blades 21 and 22 are connected to drive shafts 25 and 26 provided on the front and rear vibrators 16 and 17, and the fixed blades 23 and 24 are reversed U by an outer blade holder 27 attached to and detached from the head case 15. It is shaped like a letter. The movable blades 21 and 22 and the fixed blades 23 and 24 overlap in the inner and outer directions (vertical direction).

  A power conversion mechanism that converts the rotational power of the motor 6 into reciprocating power is provided between the pair of vibrators 16 and 17 and the motor 6. Reference numeral 18 denotes a cleaning window opened on the front surface of the outer blade holder 27, 19 a shutter for opening and closing the cleaning window 18, and 20 a lock release button of the outer blade holder 27. With the outer blade holder 27 attached and the shutter 19 opened, flowing water can be poured from the washing window 18 to wash off the fouling adhering to the movable blades 21, 22, 28, and 29.

  One sub blade 13 is disposed between the front and rear main blades 11 and 12, and the other sub blade 14 is disposed on the rear side of the rear main blade 12. The fixed blade 30 of the former sub blade 13 and the fixed blade 31 of the latter sub blade 14 are each made of a metal slit blade, and the movable blades 28 and 29 of both the sub blades 13 and 14 are made of a metal comb blade. Being mainly cut long hairs and comb hairs. In order to reciprocally drive the movable blades 28 and 29 of the sub blades 13 and 14, sub blade drive shafts (trimmer blade drive shafts) 32 and 33 are mounted on the drive shafts 25 and 26 for the main blades 11 and 12, respectively. .

  In FIG. 4, the head case 15 includes an upper head case 36 that opens downward, and a lower head case 37 that covers the lower surface side of the upper head case 36. 17 and a pair of left and right transmission links (conductors) 38 are accommodated. The upper and lower head cases 36 and 37 are each made of a plastic molded product. A drive window 39 for projecting the drive shafts 25 and 26 of the vibrators 16 and 17 is opened at the left and right center of the upper wall of the upper head case 36. A space between the surrounding walls is sealed with a vibrator packing 40.

  An inner frame 41 projects from the lower surface side of the upper wall of the upper head case 36 so as to face the drive window 39. A bottom frame 42 is provided on the lower wall of the lower head case 37 so as to correspond to the inner frame 41. A drive opening 43 is formed to be exposed. A pair of swing brackets 44 for connecting a swing frame 66 (described later) are provided so as to face both side ends of the bottom frame 42, and both side ends of the bottom frame 42 and the swing bracket 44 are connected to each other. A swing opening 45 for the swing frame 66 is formed therebetween. Since the lower surface side of the lower head case 37 is covered with the bottom frame 42 except for the drive opening 43 and the swinging opening 45, the vibrator structure and the like can be used in a state where the razor head 2 is assembled to the main body case 1. It cannot be seen. The upper head case 36 and the lower head case 37 are fastened and fixed by four screws 46 screwed from the upper head case 36 side (see FIG. 15).

(Vibrator structure)
In FIG. 5, the vibrator 16 on the front side of the pair of vibrators 16 and 17 comprises a vibrator base 16a formed in a clog-like shape, and a plastic molded product having a drive shaft 25 projecting from the upper surface of the base 16a. A pair of left and right slide frame portions 16b provided on the lower surface of the transducer base 16a is supported by a guide shaft 48 attached to the lower head case 37 so as to be slidable left and right. Therefore, slide holes 16c that are slidably guided by the guide shaft 48 are formed in the left and right slide frame portions 16b so as to penetrate left and right. In addition, slide ribs 16d are protruded at three positions on the front and rear surfaces of the slide frame portion 16b. The left and right ends of the guide shaft 48 are clamped and fixed by bearings 49 provided on the joint surface between the inner frame 41 of the upper head case 36 and the bottom frame 42 of the lower head case 37 (see FIG. 6). The vibrator 16 on the front side is positively guided and supported by the guide shaft 48 and the second guide seat 52 of the vibrator 17 on the rear side that supports the slide rib 16d so that only the left and right slides are possible. Thus, the vibrator 16 on the front side slides relative to the second guide seat 52 when both vibrators 16 and 17 slide back and forth in opposite directions, and the second guide seat 52 is on the front side. When the two vibrators 16 and 17 are reciprocally slid in the opposite directions, the vibrator 16 and the second guide seat 52 are always in sliding contact with each other. Yes.

  Similarly to the front vibrator 16, the rear vibrator 17 slides left and right on a guide shaft 50 with a drive shaft 26 projecting from the top surface of the vibrator base 17a and a slide frame portion 17b attached to the lower head case 37. Guided support is possible. Reference numeral 17c denotes a slide hole, and both left and right ends of the guide shaft 50 are clamped and fixed by bearing portions 49 similar to the guide shaft 48 described above. The rear vibrator 17 is different from the front vibrator 16 in that a flat plate-like second guide seat (guide seat) 52 extending forward is provided at the lower end of the slide frame portion 17b, and a pair is provided at the left and right centers of the lower surface thereof. A passive portion 53 made up of a rib wall is provided, and slide ribs 17d are provided on the front and rear sides of the second guide seat 52 on the left and right sides. The left and right walls of the drive opening 43 of the bottom frame 42 are provided with first guide seats 51 that support the slide ribs 17d of the vibrator 17 so as to be slidable in the left and right directions. The seat 51 is guided and supported so as to be slidable back and forth. In this way, the rear vibrator 17 slides relative to the first guide seat 51 when both vibrators 16 and 17 slide back and forth in opposite directions. And the first guide seat 51 are always in sliding contact. The slidable contact relationship structure between the front vibrator 16 and the second guide seat 52 and the slidable contact relationship structure between the rear vibrator 17 and the first guide seat 51 described above are the second embodiment and the second embodiment described later. 4 also has a similar sliding contact structure.

  As described above, the rear vibrator 17 is positively guided and supported by the guide shaft 50 and the first guide seat 51 so as to be slidable only to the left and right. The two guide seats 52 are guided and supported positively so that only left and right slides are possible. According to such a vibrator structure, the vibrators 16 and 17 are moved in the front-rear direction or obliquely only in the direction in which the vibrators 16 and 17 are moved by the guide shafts 48 and 50 and the guide seats 51 and 52. The movement in the direction is restricted, and the reciprocating stroke can be reliably reciprocated from one end to the other end. Therefore, even when the cutting load increases, the movable blades 21 and 22 can always be reciprocally driven in opposite directions with an appropriate stroke by restricting the vibrators 16 and 17 from moving in the front-rear direction and the oblique direction. Further, since the power of the motor 6 can be reliably transmitted to the movable blades 21 and 22, the beard cutting can be performed accurately without causing transmission loss.

  Since each of the pair of vibrators 16 and 17 can be guided and supported by the first guide seat 51 and the second guide seat 52, a strong pressing load (skin reaction force) is applied to the vibrators 16 and 17 via the cutting blades 11 and 12. Even when it acts, it is possible to more reliably prevent a part of the vibrators 16 and 17 from being deformed or broken. In addition, since the rear vibrator 17 is received by the first guide seat 51, when a strong pressing load is applied to the vibrators 16 and 17, the rear vibrator 17 sinks in the pressing load direction. Can be reliably prevented. Further, since the front vibrator 16 is received by the second guide seat 52 of the rear vibrator 17, the front vibrator 16 does not sink in the pressing load direction. Thus, according to the electric razor of the present embodiment, one vibrator 17 receives and supports the other vibrator 16, so that it is easy to cause a part of the other vibrator 16 to be deformed or damaged. Can be prevented. Further, since one vibrator 17 is received and supported by the first guide seat 51 provided in the lower head case 37, the support becomes strong, and a part of the one vibrator 17 is deformed or damaged. It can prevent well. Further, as the rear vibrator 17 is firmly supported, the front vibrator 16 is similarly strongly supported. As described above, the pair of vibrators 16 and 17 may be supported and supported by the second guide seat 52 provided on at least one of the vibrators 16 on the other vibrator 17.

  As described above, in the first embodiment, the front vibrator 16 is guided and supported by the second guide seat 52 provided on the rear vibrator 17, and the rear vibrator 17 is provided on the lower head case 37. The first guide seat 51 guides and supports it. That is, the first vibrator 16 and the second guide seat 52 provided on the other vibrator 17 overlap in the inner / outer direction (vertical direction), whereby the former vibrator 16 is supported in the inner / outer direction by the latter vibrator 17. It was to so. Further, the guide seats 52 provided on one vibrator 16 and the other vibrator 17 are supported in a state where they overlap in the direction in which the skin reaction force acts on the vibrators 16 and 17 via the cutting blades 11 and 12. did.

(Power conversion mechanism and transmission link)
The power conversion mechanism includes an eccentric cam 54 fixed to the output shaft of the motor 6 and a passive portion 53 provided on the rear vibrator 17. The reciprocating power converted by the power conversion mechanism is a pair of left and right transmission links 38. The power is transmitted to the vibrator 16 on the front side. As shown in FIGS. 5 and 6, the transmission link 38 is a pair of left and right oscillating shafts 56, each of which has a plate-like link that is long in the front-rear direction, and a fulcrum hole 55 at the center in the front-rear direction. It is pivotally supported so that it can swing back and forth. In addition, elongated hole-like swing holes 57 provided in the front and rear of the transmission link 38 are engaged with connection pins 58 fixed to the upper surfaces of the front and rear vibrator bases 16a and 17a. As shown in FIG. 4, the oscillating shaft body 56 includes a cylindrical shaft-shaped shaft main portion 59 protruding downward from the upper head case 36 and a shaft main portion provided continuously at the lower end of the shaft main portion 59. 59 and a shaft portion 60 having a diameter smaller than 59.

  In a state where the shaft portion 60 is engaged with the fulcrum hole 55 and the transmission link 38 is pivotally supported, the lower end step portion 61 of the shaft main portion 59 contacts the peripheral wall on the upper surface side of the fulcrum hole 55. Thus, upward movement of the transmission link 38 is restricted. Also, four round shaft-shaped presser shafts (pressers) 62 whose bottom ends are rounded are provided on the upper wall of the upper head case 36 so as to project downward, and these presser shafts 62 are arranged in front of and behind the respective swing shafts 56. The front and back of the upper surface of the transmission link 38 are received by the spherical portion at the lower end thereof (see FIG. 7). Thereby, the presser shaft 62 restricts the transmission link 38 from moving upward, and the rocking hole 57 is reliably prevented from being detached from the connecting pin 58. The presser shaft 62 protrudes downward from the upper head case 36 in the same manner as the swing shaft body 56. In this embodiment, the upward movement of the transmission link 38 can be regulated by the presser shaft 62 provided in the upper head case 36 and the step portion 61 of the swing shaft body 56. That is, the step portion 61 of the swing shaft body 56 functions as a presser body together with the presser shaft 62, and preferably includes both the step portion 61 and the presser shaft 62, but at least the step portion 61 or the presser foot is provided. The upward movement of the transmission link 38 may be restricted by only one of the shafts 62.

  As described above, by connecting the front and rear vibrators 16 and 17 with the transmission link 38, the reciprocating motion of the rear vibrator 17 is reliably transmitted to the front vibrator 16 via the transmission body 38. The movable blades 21 and 22 corresponding to the vibrators 16 and 17 can be reciprocated in opposite directions. Further, since the reciprocating motion of the vibrator 16 on the front side can be defined by the second guide seat 52 and the transmission body 38, the vibrator 16 can always be properly reciprocated to cut the whiskers more effectively. Further, since the center of swinging of the transmission link 38 is received by the step portion 61 and the upward movement of the link 38 is restricted, the swinging resistance acting on the transmission link 38 is minimized and the transmission link 38 is made smooth. And it can be reciprocally swung accurately. Therefore, transmission of the reciprocating motion between the adjacent vibrators 16 and 17 can be performed more accurately.

  As described above, the transmission link 38 is pivotally supported by the swing shaft body 56 formed integrally with the upper head case 36, and the upward movement of the transmission link 38 is restricted by the step portion 61 and the presser shaft 62. The number of parts can be reduced as compared with the case where the swing shaft body 56 and the presser shaft 62 are separately provided as separate parts, and the transmission link 38 can be pivotably supported without using a retaining ring. The support structure for the vibrators 16 and 17 can be simplified and the cost can be reduced. There is also an advantage that the labor of assembling can be reduced. Further, since the transmission link 38 provided between the upper surfaces of the vibrators 16 and 17 is held by the presser body 62, there is no room for the transmission link 38 to float away from the vibrators 16 and 17, and accordingly, the pair of vibrators 16 -Transmission of the reciprocating motion between 17 can be performed more reliably by the transmission link 38.

  As shown in FIGS. 8 and 9, the motor 6 is supported by a motor case 65 arranged inside the main body case 1, and the motor case 65 has an elastic support structure provided between the main body case 1 and the motor case 65. It is supported so that it can float up and down. The razor head 2 is supported by a first swing structure including a swing frame 66 fixed to the motor case 65 so as to be swingable back and forth. Further, the razor head 2 and the motor case 65 are supported by a second swing structure provided between the main body case 1 and the motor case 65 so as to be able to swing left and right, and to be tiltable back and forth. The motor case 65 is formed of a cylindrical plastic molding that opens downward, and a pair of swing shafts 83 and three piece receiving seats 75 project from the front and rear peripheral surfaces of the cylindrical wall-shaped portion, and a pair of left and right peripheral surfaces. The upper spring seat 69 is projected. The motor case 65 is fixed to the motor 6 with screws 85 (see FIG. 10) screwed from the upper surface side. Reference numeral 86 denotes a motor packing.

(Elastic support structure)
The elastic support structure includes a pair of left and right lower spring seats 68 provided on the inner surface of the main body case 1, a pair of upper spring seats 69 provided on the upper left and right side surfaces of the motor case 65 corresponding to the lower spring seat 68, The floating spring 70 is disposed between the spring seats 68 and 69. The floating spring 70 is formed of a compression coil spring, and always pushes up and biases the motor case 65 and the razor head 2. Therefore, the razor head 2 in a state of being pressed against the skin surface can sink into the main body case 1 together with the motor case 65.

  As described above, when the razor head 2 and the motor case 65 are supported by the elastic support structure, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk into the main body case 1 side and excessively applied to the skin surface. The action of a pressing force can be relaxed and absorbed by the floating spring 70 to soften the skin contact at the time of cutting the beard. Further, at the time of cutting the beard, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 can follow the change in the skin surface even on a three-dimensional skin surface such as around the jaw. The beard cutting can be performed accurately with close contact.

(First swing structure)
The first swinging structure includes a swinging frame 66 fixed to the motor case 65, a swinging bracket 44 provided on the lower head case 37, and a front / rear swinging shaft (a first swinging shaft). 1 axis) 71 (see FIG. 1). As shown in FIGS. 9 and 11, the swing frame 66 includes a drum-shaped mounting seat 72 that is fastened to the upper surface of the motor case 65, and a pair of head arms 73 that stand from both ends of the mounting seat 72. It consists of a press-molded product made of stainless steel plate. A mounting piece 74 projecting downward is integrally formed on the front and rear edges of the mounting seat 72, and one front mounting piece 74 and two rear mounting pieces 74 are provided on the front and rear of the motor case 65. It is received and supported by a round boss-shaped piece seat 75. The entire swing frame 66 is integrated with the motor case 65 by fastening the mounting piece 74 in this state with a screw (fastening body) 76 (see FIG. 11) screwed into the piece receiving seat 75. Thus, by supporting the razor head 2 by the swing frame 66, the razor head 2 can swing back and forth according to the direction of the external force. That is, the razor head 2 is supported to be swingable back and forth with respect to the main body case 1. In the center of the mounting seat 72, a cam passage 82 for passing the eccentric cam 54 is formed.

  In FIG. 11, the mounting piece 74 is formed in an inverted L shape with a piece base 74 a that extends back and forth continuously from the mounting seat 72 and a fastening portion 74 b that extends downward continuously from the piece base 74 a. The piece base portion 74 a is engaged and held by engagement ribs (engagement portions) 77 provided on the front and rear surfaces of the motor case 65, and the fastening portion 74 b is fastened and fixed to the piece seat by screws 76. In a state where the swing frame 66 is assembled to the motor case 65, the restriction notches 78 formed facing the left and right corners of the mounting seat 72 and the head arm 73 protrude from the left and right surfaces of the motor case 65. It is engaged and held by a boss-shaped regulating projection 79. Further, the front and rear surfaces of the overhanging seat wall of the mounting seat 72 facing the bases of the left and right head arms 73 are engaged and held by the engagement ribs 77 so as not to move back and forth. The restricting projection 79 is formed with a lead insertion hole 80 having a vertically penetrating shape.

  As described above, in the state where the swing frame 66 is assembled to the motor case 65, the three attachment pieces 74 are received and supported by the piece receiving seat 75, and the left and right side surfaces of the piece base portion 74a are engaged by the engaging ribs 77. The restriction notch 78 is engaged and held by the restriction projection 79, and the fastening portion 74b is fastened and fixed by the screw 76. Therefore, the swing frame 66 can be firmly fixed to the motor case 65 in a state in which the swing frame 66 cannot tilt in the front-rear direction and the left-right direction. Accordingly, the external force moment acting on the head arm 73 can be distributed and loaded on the piece receiving seat 75, the engaging rib 77, and the restricting projection 79. Therefore, the oscillating frame 66 can be more firmly integrated with the motor case 65 to support the razor head 2 in a more stable state. Further, the razor head 2 can be tilted back and forth along the skin surface as intended by the user to smoothly cut the beard.

  As shown in FIG. 9, the head arm 73 includes an arm base portion 73a that is continuously bent at a right angle to the mounting seat 72, an arm intermediate portion 73b that is continuously bent outward from the arm base portion 73a, and an arm intermediate portion. The arm tip 73c that is bent upward continuously from 73b is provided, and a pin hole 81 is formed in the arm tip 73c. The arm tip 73c is a pin inserted into the head case 15 through the swing opening 45 of the lower head case 37 and inserted into the pin hole 81, and the swing bracket 44 and the arm tip 73c swing relative to each other. Connected as possible. As a result, the entire razor head 2 is supported to be swingable back and forth with respect to the head arm 73 (see FIG. 12).

(Second swing structure)
3 and 12, the second swing structure includes a swing shaft (second shaft) 83 projecting from the front and rear surfaces of the motor case 65 below the upper spring seat 69, and the front and rear inside the main body case 1. It consists of a floating groove 84 arranged opposite to the surface. The floating groove 84 is partitioned by an inverted U-shaped rib wall that is long in the vertical direction, and its lateral width is set to be slightly larger than the diameter of the swing shaft 83, and the upper end of the floating groove 84 is blocked by the rib wall. It is. The swing shaft 83 in the normal state is received by the rib wall at the upper end of the floating groove 84, and the swing shaft 83 can swing left and right according to the direction of the external force acting on the razor head 2. 2 and the motor case 65 can be tilted (oscillated) to the left and right around the oscillation shaft 83. That is, the razor head 2 is supported so as to be able to swing left and right with respect to the main body case 1. Further, with the front and rear swing shafts 83 as fulcrums, structures such as the razor head 2 and the motor case 65 can be tilted back and forth. That is, the razor head 2 is supported to be swingable back and forth with respect to the main body case 1. Furthermore, the rocking shaft 83 moves up and down along the floating groove 84, so that structures such as the razor head 2 and the motor case 65 can be moved up and down. That is, the razor head 2 is supported so as to be movable in the vertical direction with respect to the main body case 1.

  As described above, according to the electric razor provided with the elastic support structure and the first and second swing structures, the razor head 2 is floated in all directions of front and rear, left and right, and up and down. The degree of freedom of tilting motion can be improved. Therefore, it is possible to provide an electric shaver that is easy to use and can be freely cut while following changes in the skin surface.

  A pair of lead terminals 88 for connecting lead wires 87 are provided on the lower surface of the motor 6, and a terminal packing 89 is provided below the motor case 65 in order to seal these lead terminals 88 in a watertight manner. It is installed. 8, 9, and 13, the terminal packing 89 is formed in a container shape whose upper surface is open, and the opening is externally fitted to a sealing seat 90 provided on the lower peripheral surface of the motor case 65. The fixing ring 91 fitted on the terminal packing 89 is closely fixed. A pair of connecting arms 92 are integrally provided on the opposite edges of the fixing ring 91, and engaging holes 93 provided in the connecting arms 92 are engaged with engaging protrusions 94 projecting from the front and rear peripheral surfaces of the motor case 65. By combining, the fixing ring 91 is integrated with the motor case 65. The lead wire 87 is led out below the terminal packing 89 from a cylindrical port 89 a provided on the bottom wall of the terminal packing 89. The power of the secondary battery 7 is supplied to the motor 6 via the control board 8 and the lead wire 87.

  According to the above-described sealing structure, the terminal packing 89 is placed on the lower portion of the motor case 65, and the fixing ring 91 is fitted on the mounting portion of the terminal packing 89 to fix the terminal packing 89 to the motor case 65. Thus, the periphery of the lead terminal 88 and the lower opening of the motor case 65 can be sealed in a watertight manner. Therefore, even when the washing water enters the main body case 1 when washing the razor head 2 with water, the lead terminal 88 or the lead wire 87 connected to the terminal 88 is surely prevented from being short-circuited. it can. Further, the fixing ring 91 can be fixed to the motor case 65 in an inseparable manner by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engagement hole 93 and the engagement projection 94. . Therefore, for example, even when a drop impact acts on the main body case 1, the fixing ring 91 and the terminal packing 89 are prevented from being separated from the motor case 65, and the sealing function by the terminal packing 89 is ensured. Can be maintained.

(Light emitting structure)
A light emitting structure is provided on the upper surface side of the head case 15 in order to shave in an entertaining state. Specifically, as shown in FIG. 14, a housing concave portion 97 having a U shape in plan view is formed in the upper surface of the upper head case 36, and a light emitting substrate 98 having a U shape in plan view is accommodated therein. Yes. A pair of front and rear LEDs (light sources) 99 that irradiate light (visible light) toward the movable blades 21 and 22 are mounted on the left and right plate surfaces of the light emitting substrate 98. In order to seal the inside of the housing recess 97 in a watertight manner and protect the light emitting substrate 98 and the LED 99, the opening of the housing recess 97 is closed by a cover body 100 having a U shape in plan view. Further, the upper surface of the cover body 100 is covered with a protective plate 101 fastened and fixed to the upper head case 36.

  The cover body 100 is formed of a light-transmitting plastic material, and a rectangular light guide portion 102 is formed to bulge around the upper surfaces of the left and right plate surfaces facing the LED 99. Further, a lead passage 104 is formed adjacent to the rear light guide portion 102 for passing the lead wire 103 led out from the light emitting substrate 98 (see FIG. 16). A packing 105 is integrally formed on the periphery of the cover body 100 including the lead opening 104 by performing a two-color molding process. The protection plate 101 is formed of a metal plate material, and a through hole 106 for the drive shafts 25 and 26 and an irradiation window 107 for exposing the light guide unit 102 are opened on the plate surface. Four corners of the plate surface of the protection plate 101 are fastened and fixed to the upper head case 36 with screws 108 (see FIG. 15), and the light guide portion 102 in this state protrudes above the irradiation window 107 (see FIG. 1).

  As shown in FIG. 10, the middle portion of the lead wire 103 led out from the light emitting substrate 98 is inserted into the lead insertion hole 80 of the regulation protrusion 79 provided in the motor case 65 and introduced into the body case 1. Yes. As described above, when the midway part of the lead wire 103 led out from the light emitting substrate 98 is held by the lead insertion hole 80, when the motor case 65 swings back and forth, left and right, or floats up and down, the lead wire 103 is halfway. It is possible to prevent the portion from being caught by another object or being crushed by being caught in a gap. Further, the lead wire 103 between the light emitting substrate 98 and the restricting projection 79 can be smoothly bent and displaced following the tilting operation of the razor head 2. Accordingly, it is possible to prevent the razor head 2 from being interrupted by the lead wire 103 while the razor head 2 can be prevented from being disconnected due to repeated external force acting on the middle portion of the lead wire 103 as the razor head 2 is tilted back and forth. it can. The electric power of the secondary battery 7 is supplied to the LED 99 through the control board 8, the lead wire 103, and the light emitting board 98 in the order described. A control circuit mounted on the control board 8 by the operation of the switch member 4 performs control to turn on or off the driving of the motor 6 and the LED 99.

  The lead wire 103 led out from the lead insertion hole 80 is integrated with the lead wire 87 for the motor 6 and inserted into the lead packing 109 attached to the partition wall 1C that partitions the upper section 1A and the lower section 1B, and then the control board. 8 (see FIG. 17). Accordingly, when the razor head 2 is washed with water, the washing water that has entered the upper compartment 1A does not enter the lower compartment 1B. Four lead insertion holes are formed in the lead packing 109 in a vertically penetrating manner corresponding to the lead wires 87 and 103.

  When the light emitting structure is provided inside the razor head 2 as described above, the surrounding walls of the movable razor head 2 and the fixed blades 23 and 24 and the razor head 2 by turning on the LED 99 provided on the light emitting substrate 98 when shaving. Can be brightly illuminated by the light emitted from the LED 99, so that whiskers can be cut in a state where the light is leaked from the fixed blades 23 and 24. In addition, when the photocatalyst is coated on the movable blades 21 and 22 and the fixed blades 23 and 24, the photocatalyst can be effectively excited by the light emitted from the LED 99 to exert a bactericidal action. Furthermore, the power consumption state of the secondary battery 7 can be clearly recognized by changing the light emission state of the LED 99 according to the remaining charge of the secondary battery 7. Since the light-emitting substrate 98 is formed in a U-shape and the light source 99 is mounted on the plate surfaces separated from each other on the left and right, it is only necessary to prepare one light-emitting substrate 98 on which a plurality of LEDs 99 are mounted. However, the structure of the light emitting structure can be simplified and the cost can be reduced as compared with the case where the upper head case 36 is separately provided at the two left and right positions.

  Further, the upper surface of the cover body 100 is covered with the protection plate 101, and the light guide portion 102 provided on the cover body 100 is projected above the irradiation window 107 of the protection plate 101. According to such a light emitting structure, the shavings dropped on the upper surface of the light guide unit 102 are dropped to the upper surface side of the protective plate 101 by the movement of the razor head 2 tilting back and forth, left and right, and the reciprocating vibration operation of the cutting blades 11 and 12. Thus, it is possible to prevent the light guide unit 102 from being covered with fuzz. Further, since the upper surface of the cover body 100 not facing the irradiation window 107 is covered with the protective plate 101 and shielded from light, the inside of the razor head 2 is effected by spotlight-like local light emitted from the light guide 102. Can be illuminated.

  In FIG. 3, the shaving blade 9 can be swung from a standby posture to a horizontal driving posture swinging upward about the shaft 113 by pushing and sliding the shaving lever 112. It is reciprocated by a vibrator 114 dedicated to the sharp shaving blade 9. Reference numeral 9a is a fixed blade, and reference numeral 9b is a movable blade. The fixed blade 9a and the movable blade 9b formed as comb teeth, respectively, mainly cut long hairs and comb hairs. The vibrator 114 is formed in a lever shape that is long in the front-rear direction, and an intermediate part in the front-rear direction is supported by a fulcrum shaft 115 provided in the motor case 65 so as to be horizontally swingable. A cam hole 116 that engages with the eccentric cam 54 is formed at the front end of the vibrator 114, and a drive groove 117 is provided at the rear end of the vibrator 114. In the state where the sharp shaving blade 9 is switched to the driving posture, the passive pin 118 integrated with the movable blade 9b engages with the driving groove 117 and inherits the reciprocating power of the vibrator 114. The upper surface of the vibrator 114 is received by the mounting seat 72 of the swing frame 66. As described above, if the vibrator 114 is swingably supported by the fulcrum shaft 115 provided in the motor case 65, the number of parts can be reduced and the assemblability can be improved as compared with the case where the fulcrum shaft 115 is separately provided. . Similarly, since the upper surface of the vibrator 114 is received by the mounting seat 72 of the swing frame 66, the number of parts can be reduced and the assemblability can be improved as compared with the case where a member corresponding to the mounting seat 72 is separately provided. .

  The detailed structure of the sub blade 14 provided at the rear part of the razor head 2 is shown in FIGS. As described above, the movable blade 29 of the sub blade 14 is configured by a comb blade having cutting blades 29a on the front and rear sides, and the fixed blade 31 is formed by a slit blade. In order to introduce the inside of the fixed blade 31, the fixed blade 31 was configured as follows. The fixed blade 31 is formed in an inverted V shape with a vertical vertical wall and an upper wall that is bent backward and at an acute angle continuously to the vertical wall, and a cutting region R1 in which the movable blade 29 is in sliding contact with the blade surface of the upper wall. And a raised region R2 where the movable blade 29 is not slidably contacted. Further, the fixed blade 31 in the raised region R2 is provided with a partially arcuate protruding raising portion (outer protruding portion) 123 so that the hair can be effectively raised by making it tense while denting the skin surface. I have to. The napping promotion part 123 is curvedly formed in a semicircular shape from the upper curved base adjacent to the inclined lower end of the movable blade 29 to the vertical vertical wall.

  As shown in FIG. 18, rib-shaped blades 31a and slits (blade holes) 31b are formed at regular intervals in the cutting region R1, and similar blades 31c and slits 31d are formed also in the raised region R2. Has been. The small blade 31a and the slit 31b in the cutting region R1 are refracted obliquely while being shifted to the left by one pitch of the cutting blade 29a of the movable blade 29, and the small blade 31c and the slit 31d in the raised region R2 are refracted. The small blade 31a and the slit 31b are made continuous. As described above, when the slit 31d is formed in the raised region R2, it is possible to prevent the hairs or long hairs raised by the raising promoter 123 from being introduced into the slit 31d and falling down on the skin surface. Further, if the small blade 31a and slit 31b in the cutting region R1 and the small blade 31c and slit 31d in the raised region R2 are continuous in the front-rear direction, the comb hair and long hair captured by the slit 31d in the raised region R2 are raised. In this state, the hair can be guided to the slit 31b in the cutting region R1 and cut reliably to shorten the hair.

  In FIG. 19, the thickness of the fixed blade 31 is T1, the protruding dimension in the direction perpendicular to the inclined upper wall (inclined surface) of the nap promoting portion 123 in the napping region R2 is T2, and the protruding dimension in the vertical direction of the napping promoting portion 123 T3, where T4 is the vertical projecting dimension from the curved surface of the nap promotion portion 123 to the inclined upper end of the fixed blade 31, each dimension T1 to T4 is preferably set to satisfy the following inequality. . (R1 <R2) (T1 <T2) (T2 <R2) (T4 <T3) (T1 <T4 <T2 <T3).

  As described above, when the small blades 31a and 31c and the slits 31b and 31d are continuous forward and backward, the blades 31a and 31c are easily deformed inward and outward as much as the entire length of the small blades 31a and 31c is increased. However, since the bridging portion 124 in the cutting region R1 is refracted obliquely, and the portion of the small blade 31a that is further refracted obliquely is received by the movable blade 29, the skin surface is pressed against the nap promoting portion 123. Even when a force acts, it is possible to prevent the small blade 31a in the cutting region R1 from being dented and deform, and to cut cut hair and long hair reliably. As shown in FIG. 19, the sliding surface of the small blade 31 a received by the movable blade 29 is provided with a bridging portion 124 that is recessed by half etching, and the small blade adjacent to the bridging portion 124. By bridging and integrating 31a and 31c, the improvement strength of the small blades 31a and 31c is increased to prevent deformation.

Moreover, if the formation position of the partial arc-shaped raising promotion part 123 is set below the inclination upper end of the fixed blade 31 by the dimension T4, the contact of the raising promotion part 123 with the skin can be reduced.
When the protruding dimension T2 from the inclined surface of the nap promoting portion 123 and the dimensional relationship between the napping regions R2 are set to satisfy the inequality (T2 <R2), the structural strength of the nap promoting portion 123 is improved, The strength of the nap promoting portion 123 can be sufficiently secured.
The region where the nap promoting portion 123 is formed extends from the upper curved base adjacent to the inclined lower end of the movable blade 29 to the vertical vertical wall on the rear side. The cutting region R1 is formed from the upper end to the lower end of the cutting blade 29a of the movable blade 29. Furthermore, the dimensional relationship between the cutting region R1 and the raised region R2 is (R1 <R2). According to such a raising structure, since the raising promotion part 123 can be made into a curved shape with a large curvature radius, the skin contact can be improved.
If the dimensional relationship between the projecting dimension T3 and the projecting dimension T4 is set so as to satisfy the inequality (T4 <T3), the nap promoting portion 123 is appropriately projected from the inclined surface of the fixed blade 31, and the Brushing can be performed effectively.
When the thickness of the fixed blade 31 is T1, and the protruding dimension of the nap promoting portion 123 protruding in the direction orthogonal to the inclined upper wall of the fixed blade 31 is T2, the dimensional relationship satisfies the inequality (T1 <T2). If it is set as described above, the raising effect by the raising promotion part 123 can be improved.
When the dimensional relationship of each part is set so as to satisfy the inequality (T1 <T4 <T2 <T3), the raising of the hair-promoting part 123 is soft and good while effectively raising long hairs and comb hairs. Can be.

The electric shaver configured as described above can be implemented in the following form.
The razor head 2 is provided with a pair of front and rear cutting blades 11 and 12 having movable blades 21 and 22 and fixed blades 23 and 24, and a pair of vibrators 16 and 17 for driving the movable blades 21 and 22 are provided with a razor head. 2, a power conversion mechanism is provided between the motor 6 and the pair of vibrators 16, 17 for converting the rotational power of the motor 6 into reciprocating power. Reference numeral 17 denotes a reciprocating power output from the power conversion mechanism, which is a reciprocating electric shaver that is reciprocally driven in opposite directions. At least one of the vibrators 16 and 17 is supported by guide seats 51 and 52 provided on the other vibrator 16 and 17.

  According to the vibrator structure described above, even when a strong pressing load (skin reaction force) is applied to the vibrators 16 and 17 via the cutting blades 11 and 12, one vibrator 16 and 17 is connected to the other vibrator. 17 and 16 can be received and supported. Therefore, it is possible to well prevent a part of the vibrators 16 and 17 from being deformed or damaged.

  The razor head 2 is provided with a pair of front and rear cutting blades 11 and 12 having movable blades 21 and 22 and fixed blades 23 and 24, and a pair of vibrators 16 and 17 for driving the movable blades 21 and 22 are provided with a razor head. 2 is disposed inside the head case 15 provided between the motor 6 and the pair of vibrators 16 and 17, and a power conversion mechanism for converting the rotational power of the motor 6 into reciprocating power is provided. The vibrators 16 and 17 are reciprocating razors that are reciprocatingly driven in opposite directions with reciprocating power output from the power conversion mechanism, and one vibrator 17 is a first guide provided in the head case 15. It is supported by a seat 51, and the other vibrator 16 is supported by a second guide seat 52 provided on the one vibrator 17.

  According to the electric razor having the above-described configuration, even when a strong pressing load (skin reaction force) is applied to the vibrators 16 and 17 via the cutting blades 11 and 12, one vibrator 17 is attached to the first head case 37. Since it is received and supported by the guide seat 51, it is possible to reliably prevent the vibrator 17 from sinking in the pressing load direction. Similarly, since the other vibrator 16 is received by the second guide seat 52 of the one vibrator 17, the vibrator 16 can be prevented from sinking in the pressing load direction. Therefore, it is possible to well prevent a part of the vibrators 16 and 17 from being deformed or damaged. In addition, since one of the vibrators 17 is received and supported by the first guide seat 51 provided in the lower head case 37, the support becomes strong and deformation and breakage of the vibrator 17 can be well prevented. Further, the other vibrator 16 supported by one vibrator 17 is also firmly supported.

  The power conversion mechanism includes an eccentric cam 54 fixed to the output shaft of the motor 6 and a passive portion 53 provided on one vibrator 17 and driven to reciprocate by the eccentric cam 54. A transmission body 38 is provided between one vibrator 17 and the other vibrator 16 to transmit the reciprocating motion of the one vibrator 17 to the other vibrator 16.

  According to the above transmission structure, the reciprocating motion of the vibrator 17 reciprocatingly driven by the power conversion mechanism is reliably transmitted to the other vibrator 16 via the transmission body 38, so that each vibrator 16 and 17 is handled. The movable blades 21 and 22 can be reciprocated in opposite directions. Further, since the reciprocating motion of at least one of the vibrators 16 can be defined by the guide seat 52 and the transmission body 38, the vibrator 16 can always be properly reciprocated to cut the whiskers more effectively.

  The head case 15 includes an upper head case 36 and a lower head case 37. A central portion of the transmission link 38 provided between the upper surfaces of the pair of vibrators 16 and 17 is pivotally supported by a swing shaft body 56 projecting downward from the upper head case 36 so as to be reciprocally swingable. A presser body 62 is provided in the upper head case 36 to restrict the upward movement of the transmission link 38.

  According to the above transmission structure, the number of parts can be reduced as compared with the case where the swing shaft body 56 and the presser body 62 are separately provided as independent parts, and the transmission link 38 can be swung without using a retaining ring. Since it can be pivotally supported, the support structure of the transmission link 38 can be simplified and the cost can be reduced. Further, since the transmission link 38 provided between the upper surfaces of the vibrators 16 and 17 is held by the presser body 62, there is no room for the transmission links 38 to be lifted off from the vibrators 16 and 17, so that the transmission link 38 is reciprocated. Transmission of movement can be performed more reliably.

  The presser body 62 is configured by a restriction protrusion formed integrally with the upper head case 36.

  As described above, when the presser body 62 is configured by the restricting projection formed integrally with the upper head case 36, the support structure of the transmission link 38 is more than that when the presser body 62 is formed as an independent part. Simplify and reduce costs. There is also an advantage that the labor of assembling can be reduced.

  The swing shaft body 56 includes a shaft portion 60 that supports the transmission link 38 and a step portion 61 formed around the upper end of the shaft portion 60. The step portion 61 is in contact with the upper surface of the transmission link 38 and restricts upward movement of the transmission link 38.

  As described above, when the swinging center of the transmission link 38 is received by the stepped portion 61 and the upward movement of the link 38 is restricted, the swinging resistance acting on the transmission link 38 is minimized, and the transmission link 38. Can be reciprocally swung smoothly and accurately. Therefore, transmission of the reciprocating motion between the adjacent vibrators 16 and 17 can be performed more accurately.

  One vibrator 17 provided with the passive portion 53 is guided and supported by a first guide seat 51 provided in the lower head case 37 so as to be slidable left and right. The other vibrator 16 is guided and supported by a second guide seat 52 provided on one vibrator 17 so as to be slidable left and right.

  According to such a vibrator structure, each of the pair of vibrators 16 and 17 can be guided and supported by the first guide seat 51 and the second guide seat 52, so that it is strong against the vibrators 16 and 17 through the cutting blades 11 and 12. Even when a pressing load (skin reaction force) is applied, it is possible to more reliably prevent a part of the vibrators 16 and 17 from being deformed or damaged. Further, the loss of motor power and the reduction of the drive stroke of the movable blades 21 and 22 are eliminated, and the beard cutting can be performed more effectively.

  Slide frame portions 16b and 17b are formed on the pair of vibrators 16 and 17, respectively. The slide frame portions 16b and 17b are slid and guided by a pair of guide shafts 48 and 50 attached to the head case 15, and the vibrators 16 and 17 are guided and supported so as to be slidable in the left and right directions.

  As described above, when the slide frame portions 16b and 17b provided on the pair of vibrators 16 and 17 are slid and guided by the pair of guide shafts 48 and 50, the vibrators 16 and 17 can be reliably moved in a state in which only the left and right slides are possible. Can be guided and supported dynamically. Therefore, when the cutting load of the cutting blades 11 and 12 is increased, the vibrators 16 and 17 are restricted from moving in the front-rear direction and the diagonal direction, and the movable blades 21 and 22 are always opposite to each other with an appropriate stroke. The whisker can be accurately cut by reciprocating.

  A U-shaped receiving recess 97 as viewed from above is formed on the upper surface of the upper head case 36, and a U-shaped light emitting substrate 98 as viewed from above is received inside the receiving recess 97. A light source 99 that irradiates light toward the movable blades 21 and 22 is mounted on each of the left and right plate surfaces of the light emitting substrate 98. The upper opening of the housing recess 97 is closed by a U-shaped translucent cover body 100 as viewed from above.

  As described above, when the light emitting structure is provided inside the razor head 2, the movable blades 21 and 22 and the fixed blades 23 and 24 and the razor head 2 are turned on by turning on the light source 99 provided on the light emitting substrate 98 during shaving. Since the surrounding wall can be brightly illuminated with the light emitted from the light source 99, the beard can be cut in an entertaining state. Further, when the photocatalyst is coated on the movable blades 21 and 22 and the fixed blades 23 and 24, the photocatalyst can be effectively excited by the light irradiated from the light source 99 to exert a sterilizing action. Furthermore, the power consumption state of the secondary battery 7 can be clearly recognized by changing the light emission state of the light source 99 according to the remaining charge of the secondary battery 7. Since the light-emitting substrate 98 is formed in a U-shape and the light source 99 is mounted on a plate surface separated from the left and right, it is sufficient to prepare a single light-emitting substrate 98 on which a plurality of light sources 99 are mounted. Compared with the case where the light sources 99 are individually provided at the left and right portions of the upper head case 36, the structure of the light emitting structure can be simplified and the cost can be reduced.

  The upper surface of the cover body 100 is covered with a protective plate 101 fixed to the upper head case 36. A light guide portion 102 provided on the cover body 100 corresponding to the light source 99 protrudes above the irradiation window 107 opened in the protection plate 101.

  According to such a light emitting structure, the shavings dropped on the upper surface of the light guide unit 102 are dropped to the upper surface side of the protective plate 101 by the movement of the razor head 2 tilting back and forth, left and right, and the reciprocating vibration operation of the cutting blades 11 and 12. Thus, it is possible to prevent the light guide unit 102 from being covered with fuzz. Further, since the upper surface of the cover body 100 not facing the irradiation window 107 is covered with the protective plate 101 and shielded from light, the inside of the razor head 2 is effected by spotlight-like local light emitted from the light guide 102. Can be illuminated.

  A motor case 65 that supports the motor 6 is disposed inside the main body case 1. The razor head 2 is supported by a swing frame 66 fixed to the motor case 65 so as to swing back and forth. The swing frame 66 includes a mounting seat 72 joined to the upper surface of the motor case 65 and a pair of head arms 73 standing from both side ends of the mounting seat 72, and the upper end of the arm 73 is provided in the head case 15. The pair of left and right swing brackets 44 are connected to each other via a first shaft 71 so as to be relatively swingable (see FIGS. 8 and 9). A mounting piece 74 projecting downward from the front and rear of the mounting seat 72 is received and supported by a piece receiving seat 75 provided on the front and rear surfaces of the motor case 65, and the swing frame 66 is supported by the motor case 65.

  According to such a head support structure, the external force moment acting on the head arm 73 can be reliably received by the motor case 65, so that the razor head 2 can be supported in a stable state. In addition, the razor head 2 can be tilted back and forth along the skin surface as intended by the user to smoothly cut the beard.

  The attachment piece 74 is formed of a piece base portion 74a that extends back and forth continuously from the mounting seat 72, and a fastening portion 74b that extends downward continuously from the piece base portion 74a. The fastening portion 74 b is fastened and fixed to the piece receiving seat 75 by the fastening body 76 in a state where the piece base portion 74 a is engaged and held by the engaging portion 77 provided in the motor case 65.

  According to such a fixing structure, the rocking frame 66 can be more firmly integrated with the motor case 65, so that the razor head 2 can be supported in a more stable state.

  The restriction notches 78 formed facing the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by restriction protrusions 79 protruding from the left and right of the upper surface of the motor case 65.

  As described above, when the restriction notches 78 formed at the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the restriction protrusions 79 provided on the motor case 65, the external force moment acting on the head arm 73 is reduced. The restricting protrusions 79 can also be distributed and loaded. Therefore, the oscillating frame 66 can be more firmly integrated with the motor case 65 to support the razor head 2 in a more stable state.

  The control board 8 arranged inside the main body case 1 and the light emitting board 98 arranged in the housing recess 97 of the upper head case 36 are electrically connected via a plurality of lead wires 103. Midway portions of the plurality of lead wires 103 are inserted into lead insertion holes 80 that vertically penetrate the regulation protrusions 79.

  As described above, when the middle portion of the lead wire 103 provided between the control board 8 and the light emitting board 98 is inserted into the lead insertion hole 80 formed in the restriction projection 79, the lead wire is moved when the razor head 2 tilts back and forth. It is possible to prevent the midway part 103 from being caught by another object and being pulled or pinched by a gap. Further, the lead wire 103 between the light emitting substrate 98 and the restricting projection 79 can be smoothly bent and displaced following the tilting operation of the razor head 2. Accordingly, it is possible to prevent the razor head 2 from being interrupted by the lead wire 103 while the razor head 2 can be prevented from being disconnected due to repeated external force acting on the middle portion of the lead wire 103 as the razor head 2 is tilted back and forth. it can.

  The razor head 2 and the motor case 65 are supported in a floating manner by an elastic support structure provided between the motor case 65 and the main body case 1. The elastic support structure includes a pair of left and right lower spring seats 68 provided on the main body case 1, a pair of upper spring seats 69 provided on the left and right side surfaces of the motor case 65 corresponding to the lower spring seat 68, and both these springs. A floating spring 70 is disposed between the seats 68 and 69 to push up and bias the motor case 65.

  As described above, when the razor head 2 and the motor case 65 are supported by the elastic support structure, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk into the main body case 1 side and excessively applied to the skin surface. A large pressing force can be relaxed and absorbed by the floating spring 70. Further, at the time of cutting the beard, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 can follow the change in the skin surface even on a three-dimensional skin surface such as around the jaw. And can adhere. Therefore, whisker cutting can be performed accurately while softening the skin contact at the time of cutting the beard.

  A second shaft 83 is provided on the front and rear surfaces of the motor case 65 below the upper spring seat 69 so as to support the razor head 2 and the motor case 65 so as to be able to swing left and right. A floating groove 84 for floatingly supporting the second shaft 83 is formed inside the main body case 1.

  As described above, when the second shaft 83 is provided in front of and behind the motor case 65 and the coaxial 83 is floated and supported by the floating groove 84 provided in the main body case 1, the razor head 2 and the motor case 65 can be swung left and right. It can be supported to tilt forward and backward. According to such an electric razor, the razor head 2 can be floated in all directions of front and rear, left and right, and up and down, and the degree of freedom of tilting operation of the razor head 2 can be improved. An electric shaver with excellent usability that can be cut can be provided.

  A container-like terminal packing 89 that seals the lead terminal 88 of the motor 6 in a watertight manner is attached to the lower portion of the motor case 65. The mounting portion of the terminal packing 89 is closely fixed to the motor case 65 by a fixing ring 91 that is externally fitted to the terminal packing 89. The connecting arms 92 provided at a plurality of locations around the fixing ring 91 are fixed to the motor case 65 through engaging holes 93 and engaging convex portions 94 that engage with each other in a concave and convex manner.

  According to such a sealing structure, the terminal packing 89 is attached to the lower portion of the motor case 65, and the fixing ring 91 is fitted on the mounting portion of the terminal packing 89 to fix the terminal packing 89 to the motor case 65. Thus, the periphery of the lead terminal 88 can be sealed in a watertight manner. Therefore, even when the washing water enters the main body case 1 when washing the razor head 2 with water, the lead terminal 88 or the lead wire 87 connected to the terminal 88 is surely prevented from being short-circuited. it can. Further, the fixing ring 91 can be fixed to the motor case 65 in an inseparable manner by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engagement hole 93 and the engagement projection 94. . Therefore, for example, even when a drop impact acts on the main body case 1, the fixing ring 91 and the terminal packing 89 are prevented from being separated from the motor case 65, and the sealing function by the terminal packing 89 is ensured. Can be maintained.

  In addition to the pair of cutting blades 11 and 12, the razor head 2 is provided with a sub-blade 14 for rough shaving provided with a movable blade 29 and a fixed blade 31. The movable blade 29 of the sub blade 14 is driven to reciprocate simultaneously by the vibrator 17 for the adjacent cutting blade 12. The fixed blade 31 of the sub blade 14 is composed of a slit blade, and includes a cutting region R1 where the movable blade 29 is in sliding contact and a raised region R2 where the movable blade 29 is not in sliding contact. A protruding napping promotion portion 123 is formed on the fixed blade 31 in the napping region R2.

  According to the fixed blade 31 of the sub blade 14 configured as described above, the hair surface and the long hair can be effectively brushed by denting the skin surface while being dented by the brushing promoting portion 123. Can be cut in the cutting region R1 to shorten the hair.

  A slit 31d is formed in the raised region R2 of the fixed blade 31 of the sub blade 14.

  As described above, when the slit 31d is formed in the raised region R2 of the fixed blade 31, it is possible to prevent the comb hair and long hair raised by the raising promotion portion 123 from being introduced into the slit 31d and falling into the skin surface. Further, the hairs and long hairs captured by the slit 31d can be guided to the cutting region R1 while being raised and cut.

  A slit 31b formed in the cutting region R1 of the fixed blade 31 of the sub blade 14 and a slit 31d formed in the raised region R2 of the fixed blade 31 for rough shaving are continuous in the front-rear direction.

  As described above, when the slit 31b formed in the cutting region R1 and the slit 31d formed in the raised region R2 are continuous in the front-rear direction, the comb hair and long hair captured by the slit 31d are raised. As it is, it can be guided to the slit 31d on the raised region R2 side. Therefore, it is possible to cut hairs and long hairs with more certainty and shorten hairs.

(Example 2) FIG. 20 shows Example 2 of the present invention in which the vibrator structure is changed. Here, similarly to the vibrator structure of the first embodiment, the head case 15 is constituted by the upper head case 36 and the lower head case 37, and the front vibrator 16, the rear vibrator 17, A pair of left and right transmission links 38 for connecting the vibrators 16 and 17 are accommodated. The vibrator structure according to the second embodiment is different from the vibrator structure according to the first embodiment in that the swing shaft body 56 is integrally provided on the lower surface of the transmission link 38 and the shaft portion 60 below the swing shaft body 56 is attached to the support frame. The difference is that the transmission link 38 is supported by the body 126 so as to be able to swing left and right. Further, the difference is that the support frame 126 and the pair of left and right guide plates 127 positively guide and support the vibrators 16 and 17 so as to be slidable only in the left and right directions.

  The support frame body 126 and the pair of guide plates 127 are formed of plates that are long on the left and right sides. It is clamped and fixed at 37 joints. A fulcrum hole 55 that supports the shaft portion 60 is formed in the front and rear center of the support frame body 126. Further, the front and back of the upper surface of the transmission link 38 are pressed and held by the spherical portion at the lower end of the presser shaft 62 provided in the upper head case 36. Since others are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted. The same applies to the following embodiments.

Example 3 FIG. 21 shows Example 3 of the present invention in which the vibrator structure is changed. In this case, bifurcated passive portions 53 and 53 are provided in an up-and-down manner on the upper and lower sides of the opposing surfaces of the front vibrator 16 and the rear vibrator 17, and the passive portions 53 and 53 are driven in a crank shape. The eccentric cam 54 provided with the pin 54a can be reciprocated in the opposite direction at the same time. Further, a first guide seat (guide seat) 51 for guiding and supporting the rear vibrator 17 is provided on the lower surface of the front vibrator 16, and the front vibrator 16 is guided and supported on the lower surface of the rear vibrator 17. A second guide seat (guide seat) 52 is provided. The vibrators 16 and 17 have box-like bases 16e and 17e that open forward or rearward, and the bases 16e and 17e are supported by a pair of left and right elastic arms 16f and 17f. The whole was supported to be movable left and right. In this embodiment, the front and rear vibrators 16 and 17 are provided with the first guide seat 51 and the second guide seat 52 so that the vibrators 16 and 17 support the counterpart vibrators 17 and 16. According to such a vibrator structure, each of the pair of vibrators 16 and 17 is guided and supported by the first guide seat 51 and the second guide seat 52, so that the vibrators 16 and 17 are supported by the cutting blades 11 and 12. Even when a strong pressing load (skin reaction force) is applied, it is possible to reliably prevent a part of the vibrators 16 and 17 from being deformed or damaged. As can be understood from this embodiment, the pair of vibrators 16 and 17 can be guided and supported with each other via the first guide seat 51 and the second guide seat 52. As with the vibrators 16 and 17 of the first embodiment, when the bases 16e and 17e are slidably supported by the guide shafts 48 and 50, even if a strong pressing load acts on the vibrators 16 and 17, Sinking can be prevented more reliably. As described above, in the vibrator structure of the third embodiment, the front vibrator 16 and the second guide seat 52 slide relative to each other when the vibrators 16 and 17 reciprocate and slide in opposite directions. The rear vibrator 17 and the second guide seat 52 slide relative to each other when the vibrators 16 and 17 slide back and forth in opposite directions. That is, the front vibrator 16 and the second guide seat 52 are always in sliding contact, and the rear vibrator 17 and the second guide seat 52 are always in sliding contact as well.

Example 4 FIG. 22 shows Example 4 of the present invention in which the vibrator structure is changed. There, a main blade (cutting blade) 11 and a sub blade 13 are provided on the upper surface side of the razor head 2, and a shaving blade (cutting blade) 9 is provided on the rear surface of the razor head 2. Further, a vibrator 16 that drives the main blade 11 and the sub blade 13 and a vibrator 17 that drives the shaving blade 9 are provided inside the head case 15, and the reciprocating operation of the vibrator 17 is performed by the transmission link 38 through the vibrator 16. I told you to. The front vibrator 16 is positively supported by the second guide seat 52 provided on the guide shaft 48 and the vibrator 17 so as to be slidable only to the left and right. The first guide seat 51 provided in the head case 37 is positively supported so as to be slidable only to the left and right. A support frame body 126 is fixed inside the upper head case 36, and the transmission link 38 is swingably supported by a swing shaft body 56 fixed to the frame body 126. As can be understood from this embodiment, the vibrators 16 and 17 do not have to be provided corresponding to the pair of main blades 11 and 12, and the two cutting blades (the main blade 11 and the shaving blade 9) are driven to reciprocate. The main blade 11 and the sub blades 13 and 14 may be reciprocally driven as long as possible.

(Example 5) FIG. 23 shows Example 5 of this invention which changed the structure of the transmission body. In this case, racks 131 and 132 are provided on both the left and right sides of the opposed surfaces of the front and rear vibrators 16 and 17, and pinions 133 and 134 are provided between the corresponding racks 131 and 132, so that the back and forth vibrator 17 is reciprocated. Can be transmitted to the vibrator 16 on the front side. The pinions 133 and 134 are rotatably supported by pinion shafts 135 and 136 formed integrally with the lower head case 37, respectively. In this embodiment, the racks 131 and 132 and the pinions 133 and 134 function as the transmission body 38 to positively transmit the reciprocating motion of the rear vibrator 17 to the front rear vibrator 16.

  The presser body 62 does not need to be formed in a round shaft shape, and protrudes downward from the case wall of the upper head case 36 that faces the transmission link 38, and includes a rib-shaped restriction projection that contacts the upper surface of the transmission link 38. You may comprise by the rod-shaped protrusion. As for the engagement hole 93 and the engagement convex portion 94 that engage with each other, the engagement hole 93 may be provided in the motor case 65 and the engagement convex portion 94 may be provided in the connecting arm 92. The fulcrum hole 55 does not need to be formed in a circular cross section, and may be formed in a polygonal cross section. The cross-sectional shape of the guide shafts 48 and 50 does not have to be circular, and may be a polygonal shape such as a triangle or a quadrangle.

1 Body case 2 Razor head 6 Motor 8 Control board 11 Main blade (cutting blade)
12 Main blade (cutting blade)
14 Sub blade 15 Head case 16 Vibrator 17 Vibrator 16 b Slide frame portion 17 b Slide frame portion 21 Movable blade 22 Movable blade 23 Fixed blade 24 Fixed blade 29 Movable blade 31 Fixed blade 31 b Slit 31 d Slit 36 Upper head case 37 Lower head case 38 Transmission link (Transmission body)
44 swing bracket 48 guide shaft 50 guide shaft 51 first guide seat 52 second guide seat 53 passive section 54 eccentric cam 56 swing shaft body 60 shaft section 61 step section 62 presser body 65 motor case 66 swing frame 68 lower spring Seat 69 Upper spring seat 70 Floating spring 71 First shaft 72 Mounting seat 73 Head arm 74 Mounting piece 74a Piece base portion 74b Fastening portion 75 Piece receiving seat 76 Fastening body 77 Engaging portion 78 Restriction notch 79 Restriction projection 80 Lead insertion hole 83 First Biaxial 84 Floating groove 88 Lead terminal 89 Terminal packing 91 Fixing ring 92 Connecting arm 93 Engaging hole 94 Engaging convex part 97 Containing concave part 98 Light emitting substrate 99 Light source 100 Cover body 101 Protective plate 102 Light guide part 103 Lead wire 107 Irradiation window 123 Raising portion R1 Cutting region R2 Raising region

Claims (19)

The razor head (2) is provided with a pair of front and rear cutting blades (11, 12) having movable blades (21, 22) and fixed blades (23, 24), and a pair for driving each movable blade (21, 22). Are disposed in a head case (15) provided in the razor head (2), and the motor (6) and the pair of vibrators (16, 17) are arranged between the motor (6) and the pair of vibrators (16, 17). A power conversion mechanism for converting the rotational power of (6) into reciprocating power;
A pair of vibrators (16, 17) is a reciprocating electric shaver that is reciprocatingly driven in opposite directions with reciprocating power output from a power conversion mechanism,
An electric shaver characterized in that at least one vibrator (16, 17) is supported by a guide seat (51, 52) provided on the other vibrator (16, 17). The power conversion mechanism includes an eccentric cam (54) fixed to the output shaft of the motor (6) and a passive portion (53) provided on one vibrator (17) and driven to reciprocate by the eccentric cam (54). Has
A transmission body (38) is provided between the one vibrator (17) and the other vibrator (16) to transmit the reciprocating motion of the one vibrator (17) to the other vibrator (16). The electric razor according to claim 1. The head case (15) includes an upper head case (36) and a lower head case (37).
The central portion of the transmission link (38) provided between the upper surfaces of the pair of vibrators (16, 17) can be reciprocally swung by a swing shaft body (56) protruding downward from the upper head case (36). It is pivotally supported,
The electric shaver according to claim 2, wherein the upper head case (36) is provided with a presser body (62) for restricting upward movement of the transmission link (38).   The electric shaver according to claim 3, wherein the presser body (62) is composed of a restriction protrusion formed integrally with the upper head case (36). The swing shaft body (56) includes a shaft portion (60) that pivotally supports the transmission link (38), and a step portion (61) formed around the upper end of the shaft portion (60).
The electric power according to claim 3 or 4, wherein the step portion (61) is in contact with the upper surface of the transmission link (38), and the upward movement of the transmission link (38) is restricted by the swing shaft body (56). Razor. One vibrator (17) provided with a passive portion (53) is supported and slidable by a first guide seat (51) provided in the lower head case (37) so as to be slidable left and right.
6. The electricity according to claim 3, wherein the other vibrator (16) is supported by a second guide seat (52) provided on the one vibrator (17) so as to be slidable left and right. Razor. Slide frame parts (16b, 17b) are formed on each of the pair of vibrators (16, 17),
The slide frame (16b, 17b) is slid and guided by a pair of guide shafts (48, 50) mounted on the head case (15), and each vibrator (16, 17) is guided and supported so as to be slidable only to the left and right. The electric shaver according to any one of claims 3 to 6. A U-shaped receiving recess (97) as viewed from above is formed in the upper surface of the upper head case (36) so as to be recessed, and a U-shaped light emitting substrate (98) as viewed from above within the receiving recess (97). Is housed,
A light source (99) for irradiating light toward the movable blade (21, 22) is mounted on each of the left and right plate surfaces of the light emitting substrate (98),
The electric shaver according to any one of claims 3 to 7, wherein the upper opening of the housing recess (97) is closed with a U-shaped translucent cover body (100) when viewed from above. The upper surface of the cover body (100) is covered with a protective plate (101) fixed to the upper head case (36),
The light guide (102) provided in the cover body (100) corresponding to the light source (99) protrudes above the irradiation window (107) opened in the protection plate (101). Electric razor. A motor case (65) for supporting the motor (6) is arranged inside the main body case (1),
The razor head (2) is supported by a swing frame (66) fixed to the motor case (65) so as to be able to swing back and forth.
The swing frame (66) includes a mounting seat (72) joined to the upper surface of the motor case (65) and a pair of head arms (73) standing up from both ends of the mounting seat (72). The upper end of the arm (73) is coupled to a pair of left and right swing brackets (44) provided on the head case (15) via a first shaft (71) so as to be relatively swingable.
A mounting piece (74) protruding downward from the front and rear of the mounting seat (72) is received and supported by a piece receiving seat (75) provided on the front and rear surfaces of the motor case (65), and the swing frame (66). The electric razor according to any one of claims 1 to 9, wherein is supported by a motor case (65). The mounting piece (74) is formed by a piece base (74a) extending continuously forward and backward to the mounting seat (72) and a fastening portion (74b) extending downward continuously to the piece base (74a),
The fastening portion (74b) is fastened and fixed to the piece seat (75) by the fastening body (76) in a state where the piece base portion (74a) is engaged and held by the engaging portion (77) provided in the motor case (65). The electric razor according to claim 10.   The restriction notches (78) formed facing the left and right corners of the mounting seat (72) and the head arm (73) are engaged and held by the restriction protrusions (79) protruding from the left and right surfaces of the motor case (65). The electric shaver according to claim 10 or 11. The control board (8) arranged inside the main body case (1) and the light emitting board (98) arranged in the housing recess (97) of the upper head case (36) are connected via a plurality of lead wires (103). Has been
The electric shaver according to any one of claims 10 to 12, wherein middle portions of the plurality of lead wires (103) are inserted into lead insertion holes (80) penetrating the regulating protrusions (79) vertically. The razor head (2) and the motor case (65) are supported in a floating manner by an elastic support structure provided between the motor case (65) and the main body case (1).
The elastic support structure includes a pair of left and right lower spring seats (68) provided on the body case (1), and a pair of upper springs provided on the left and right side surfaces of the motor case (65) corresponding to the lower spring seat (68). 14. A spring seat (69) and a floating spring (70) disposed between both spring seats (68, 69) for pushing up and biasing the motor case (65). Electric razor as described in A second shaft (83) that supports the razor head (2) and the motor case (65) so as to be able to swing left and right is projected from the front and rear surfaces of the motor case (65) below the upper spring seat (69). And
The electric shaver according to claim 14, wherein a floating groove (84) for floatingly supporting the second shaft (83) is formed inside the main body case (1). A container-shaped terminal packing (89) for sealing the lead terminal (88) of the motor (6) in a watertight manner is attached to the lower part of the motor case (65).
The mounting portion of the terminal packing (89) is tightly fixed to the motor case (65) with a fixing ring (91) that is externally fitted to the terminal packing (89).
The connecting arms (92) provided at a plurality of locations around the fixing ring (91) are fixed to the motor case (65) via engaging holes (93) and engaging protrusions (94) that engage with each other in an uneven manner. The electric shaver according to any one of claims 10 to 15, wherein In addition to the pair of cutting blades (11, 12), the razor head (2) is provided with a sub-blade (14) for rough shaving provided with a movable blade (29) and a fixed blade (31),
The movable blade (29) of the sub blade (14) is simultaneously driven to reciprocate by the vibrator (17) for the adjacent cutting blade (12),
The fixed blade (31) of the sub blade (14) is formed of a slit blade, a cutting region (R1) where the movable blade (29) is in sliding contact, and a raised region (R2) where the movable blade (29) is not in sliding contact. And
The electric shaver according to any one of claims 1 to 16, wherein a protruding hair-raising portion (123) is formed in the hair raising region (R2).   The electric shaver according to claim 17, wherein a slit (31d) is formed in a raised region (R2) of the fixed blade (31) of the sub blade (14).   A slit (31b) formed in the cutting region (R1) of the fixed blade (31) of the sub blade (14) and a slit (31d) formed in the raised region (R2) of the fixed blade (31) for rough shaving. The electric shaver according to claim 18, which is continuous in the front-rear direction.

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