JP6876506B2 - Electric razor - Google Patents

Description

The present invention relates to a reciprocating electric razor that reciprocates a pair of inner blades in opposite directions to cut a whiskers.

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

The cutter base is formed in a hollow shape by a head frame and a bottom wall that closes an opening on the lower surface of the frame, and a pair of drive elements and a connecting lever are housed therein. Each drive element is composed of a plastic molded product integrally provided with a thick base portion, a thin-walled 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 ends at both ends are supported by screw receiving bosses projecting from the upper surface of the bottom wall, and are jointly tightened and fixed by screws screwed into the screw receiving boss from the upper surface side of the head frame. Further, forks that engage with each drive element are formed in the front and rear of the connecting lever, and the fitting shaft portion provided in the center of the front and rear of the connecting lever is pivotally supported by the pivot shaft provided on the inner surface of the upper wall of the head frame. , It is held inseparably by a retaining ring attached to the lower end of the pivot. Long window holes are opened in the front and rear of the bottom wall, and the cam engaging portion beyond the window holes is exposed to the main body case side.

Japanese Unexamined Patent Publication No. 06-054965 (paragraph number 0010, FIG. 5)

According to the electric razor of Patent Document 1, since the pair of drivers are reciprocally driven in opposite directions in a synchronized state, the kinetic inertial forces of the individual drivers cancel each other out and the pair of drivers are reciprocated. The vibration of the cutter head can be reduced when the cutter head is used. However, the fixed ends provided on both sides of each drive element are individually fastened to the screw receiving boss, and the thin-walled flexible deformable portion and the base are supported in a suspended shape. Therefore, when a strong pressing load (skin reaction force) acts on the vibrator via the outer blade and the inner blade, the vibrator may sink and a part of the vibrator may be deformed or damaged.

Further, according to the electric razor of Patent Document 1, since the cutter head is supported by a support base so as to be swingable in the front-rear direction, whiskers can be cut while swinging the cutter head back and forth. However, since the cutter head is only supported by a support base so that it can swing back and forth, and the degree of freedom of tilting motion when the cutter head follows the skin surface is low, the cutter head is tilted following the skin surface. It was difficult to cut the beard while frequently changing the grip of the electric razor, which was difficult to use.

An object of the present invention is to realize optimization of the vibrator structure so that the pair of inner blades can always be reciprocated in opposite directions with an appropriate stroke, and therefore transmission loss can occur even when the cutting load increases. The purpose is to provide an electric razor capable of properly cutting the whiskers.

In the present invention, the razor head 2 is provided with a pair of front and rear cutting blades 11 and 12 provided with movable blades 21 and 22 and fixed blades 23 and 24, and a pair of transducers 16 and 17 for driving the movable blades 21 and 22. Is arranged inside the head case 15 provided on 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, and the pair The target is a reciprocating electric razor in which the vibrators 16 and 17 of the above are reciprocating power output from the power conversion mechanism and are reciprocally driven in opposite directions. Then, at least one of the vibrators 16 and 17 is supported by the guide seats 51 and 52 provided on the other vibrators 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 unit 53 provided on one of the vibrators 17 and reciprocally driven by the eccentric cam 54. A transmitter 38 that transmits the reciprocating motion of the one oscillator 17 to the other oscillator 16 is provided between the one oscillator 17 and the other oscillator 16. The transmission body can be configured by the transmission link 38 shown in FIG. 5 and the pinion-rack mechanism shown in FIG. 23.

As shown in FIG. 4, 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 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. The upper head case 36 is provided with a holding body 62 that regulates the upward movement of the transmission link 38.

The presser body 62 is composed of a regulating 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 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 to restrict the upward movement of the transmission link 38.

One of the vibrators 17 provided with the passive portion 53 is guided and supported by a first guide seat 51 provided on the lower head case 37 so as to be slidable to the left and right. The other vibrator 16 is guided and supported by a second guide seat 52 provided on the one vibrator 17 so as to be slidable to the 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 slide-guided by a pair of guide shafts 48 and 50 mounted on the head case 15, and the vibrators 16 and 17 are guided and supported only by left and right slides.

As shown in FIG. 14, a U-shaped accommodating recess 97 viewed from a plane is formed on the upper surface of the upper head case 36, and a U-shaped light emitting substrate 98 viewed from a plane is accommodated inside the accommodating 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 accommodating recess 97 is closed by a U-shaped translucent cover body 100 when viewed from a plane.

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 portion 102 provided on the cover body 100 corresponding to the light source 99 projects above the irradiation window 107 opened in the protective plate 101 (see FIG. 1).

A motor case 65 that supports 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 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 side ends of the mounting seat 72, and the upper end of the arm 73 is provided on 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). The mounting piece 74 projecting downward from the front and rear of the mounting seat 72 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.

As shown in FIG. 11, the mounting piece 74 is formed of a piece base portion 74a that extends continuously to the mounting seat 72 in the front-rear direction and a fastening portion 74b that extends continuously downward to the piece base portion 74a. The fastening portion 74b is fastened and fixed to the piece receiving 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 on the motor case 65.

The regulation notches 78 formed so as to face the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the regulation protrusions 79 protruding from the left and right on 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 accommodating recess 97 of the upper head case 36 are connected via a plurality of lead wires 103. The middle portion of the plurality of lead wires 103 is inserted into the lead insertion holes 80 that penetrate the regulation protrusions 79 in the vertical direction.

As shown in FIG. 8, the razor head 2 and the motor case 65 are floatably supported 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 in 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, and both springs. It is equipped with a floating spring 70 that is arranged between the seats 68 and 69 and pushes up and urges the motor case 65.

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

As shown in FIG. 13, a container-shaped terminal packing 89 for watertightly sealing the lead terminal 88 of the motor 6 is attached to the lower part 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. 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 convex portions 94 that engage with each other in a concave-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 simultaneously reciprocated 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 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. An external protrusion-shaped raising promotion portion 123 is formed in the 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).

The slit 31b formed in the cutting region R1 of the fixed blade 31 of the sub blade 14 and the 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 razor according to the present invention, a pair of vibrators 16 and 17 are arranged inside the head case 15, and these vibrators 16 and 17 are reciprocated 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 the guide seats 51 and 52 provided on the other vibrators 16 and 17. According to such a vibrator structure, even when a strong pressing load (skin reaction force) acts on the vibrators 16 and 17 via the cutting blades 11 and 12, one of the vibrators 16 and 17 is the other vibrator 17.・ 16 can be received and supported. Therefore, it is possible to prevent a part of the vibrators 16 and 17 from being deformed or damaged.

An eccentric cam 54 driven by a motor 6 and a passive unit 53 provided on one oscillator 17 form a power conversion mechanism, and the reciprocating motion of one oscillator 17 is transmitted to the other oscillator 16 via a transmitter 38. I tried to transmit. According to such a transmission structure, the reciprocating motion of the vibrator 17 driven by the power conversion mechanism is reliably transmitted to the other vibrator 16 via the transmission body 38, and the movable vibrators 16 and 17 are supported. 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 slid back and forth appropriately to cut the whiskers more effectively.

The head case 15 is composed of the upper head case 36 and the lower head case 37, and the transmission link 38 provided between the upper surfaces of the pair of vibrators 16 and 17 is reciprocated by the swing shaft body 56 provided in the upper head case 36. I made it movable. Further, the pressing body 62 provided on the upper head case 36 can regulate the upward movement of the transmission link 38. 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 holding body 62 are separately provided as independent parts, and the transmission link 38 can be swung without the need to use a retaining ring or the like. 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 pressed and held by the holding body 62, there is no room for the transmission link 38 to float away from each of the vibrators 16 and 17, and therefore, the transmission link 38 reciprocates. The movement can be transmitted more reliably.

When the pressing body 62 is composed of the regulating protrusions formed integrally with the upper head case 36, the support structure of the transmission link 38 is simplified and lowered as compared with the case where the pressing body 62 is formed as an independent component. It can be costly. There is also an advantage that the labor of assembly can be reduced.

The swing shaft 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 abuts on the upper surface of the transmission link 38 to regulate the upward movement of the transmission link 38. I did. In this way, when the swing center of the transmission link 38 is received by the step portion 61 and the upward movement of the transmission link 38 is restricted, the swing resistance acting on the transmission link 38 is minimized, and the transmission link 38 is moved. It can be swung back and forth smoothly and accurately. Therefore, the transmission of the reciprocating motion between the adjacent vibrators 16 and 17 can be performed more accurately.

One oscillator 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 oscillator 16 is guided and supported by a second guide seat 52 provided in one oscillator 17. The guide is supported so that it can slide left and right. According to such a vibrator structure, 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, it is strong against the vibrators 16 and 17 via 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 transmission loss of the motor power and the reduction of the drive stroke of the movable blades 21 and 22 can be eliminated, and the whiskers can be cut more effectively.

When the slide frame portions 16b and 17b provided on the pair of vibrators 16 and 17 are slide-guided by the pair of guide shafts 48 and 50, the guides and support of each vibrator 16 and 17 are steadily supported in a state where only left and right slides are possible. it can. Therefore, when the cutting load of the cutting blades 11 and 12 increases, the vibrators 16 and 17 are restricted from shifting in the front-rear direction and the diagonal direction, and the movable blades 21 and 22 are always opposed to each other with an appropriate stroke. It can be reciprocated to cut the beard properly.

A U-shaped accommodating recess 97 is formed in the upper surface of the upper head case 36, a U-shaped light emitting substrate 98 is accommodated therein, and the upper opening of the accommodating recess 97 is formed by a U-shaped cover body 100. I tried to close it. When the light emitting structure is provided inside the razor head 2 in this way, the light source 99 provided on the light emitting substrate 98 is turned on at the time of 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 turned on. Since the wall can be brightly illuminated with the light emitted from the light source 99, the whiskers can be cut in an interesting state. Further, when the movable blades 21 and 22 and the fixed blades 23 and 24 are coated with a photocatalyst, the photocatalyst can be effectively excited by the light emitted from the light source 99 to exert a bactericidal action. Further, by changing the light emitting state of the light source 99 according to the remaining charge of the secondary battery 7, the power consumption status of the secondary battery 7 can be clearly recognized. Since the light emitting board 98 is formed in a U shape and the light source 99 is mounted on the plate surfaces separated to the left and right, it is sufficient to prepare one light emitting board 98 on which a plurality of light sources 99 are mounted. Therefore, the light emitting board 98 and Compared with the case where the light sources 99 are individually provided at two locations on the left and right 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 the protective plate 101, and the light guide portion 102 provided on the cover body 100 is projected above the irradiation window 107 of the protective plate 101. According to such a light emitting structure, the hair dust that has fallen on the upper surface of the light guide portion 102 is dropped to the upper surface side of the protective plate 101 due to the movement of the razor head 2 tilting back and forth and left and right and the reciprocating vibration operation of the cutting blades 11 and 12. Therefore, it is possible to prevent the light guide portion 102 from being covered with hair dust. Further, since the upper surface of the cover body 100 that does not face the irradiation window 107 is covered with the protective plate 101 to block light, the inside of the razor head 2 is effective with the spotlight-like local light emitted from the light guide portion 102. Can be illuminated.

The motor case 65 is arranged inside the main body case 1, and the head arm 73 of the swing frame 66 fixed to the motor case 65 and the pair of swing brackets 44 provided on the lower head case 37 are connected via the first shaft 71. The razor head 2 was supported so as to be swingable back and forth. Further, 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. I supported it so that it could not tilt back and forth. 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. Further, the razor head 2 can be tilted back and forth along the skin surface as intended by the user to smoothly cut the whiskers.

A state in which a mounting piece 74 is formed by a piece base 74a continuous with the mounting seat 72 and a downward fastening portion 74b continuous with the piece base 74a, and the piece base 74a is engaged and held by an engaging portion 77 provided on the motor case 65. Then, the fastening portion 74b is fastened and fixed to the piece receiving seat 75 by the fastening body 76. According to such a fixed structure, the swing 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 regulation notches 78 formed in the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the regulation protrusions 79 protruding from the motor case 65, the external force moment acting on the head arm 73 is also applied to the regulation protrusions 79. It can be distributed and burdened. Therefore, the swing frame 66 can be more firmly integrated with the motor case 65, and the razor head 2 can be supported in a more stable state.

When the middle part 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 regulation protrusion 79, when the razor head 2 tilts back and forth, the middle part of the lead wire 103 is inserted. It is possible to prevent it from being caught by another object and pulled, or being caught in a gap and being crushed. Further, the lead wire 103 between the light emitting substrate 98 and the regulation protrusion 79 can be smoothly bent and displaced in accordance with the tilting operation of the razor head 2. Therefore, as the razor head 2 tilts back and forth, it is possible to prevent the lead wire 103 from being repeatedly subjected to an external force to break the wire, and it also prevents the tilting operation of the razor head 2 from being disturbed by the lead wire 103. it can.

The razor head 2 and the motor case 65 were floatably supported by an elastic support structure provided between the motor case 65 and the main body case 1. Further, the elastic support structure is composed of 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 arranged between these both spring seats 68 and 69. I made it. When the razor head 2 and the motor case 65 are supported by the elastic support structure in this way, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk toward the main body case 1 side, and the razor head 2 is excessively applied to the skin surface. The floating spring 70 can relax and absorb the action of the pressing force. Further, when cutting the whiskers, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 follows the change in the skin surface even on a three-dimensional skin surface such as around the chin. Can be in close contact. Therefore, it is possible to accurately cut the beard while softening the skin contact at the time of cutting the beard.

When the second shaft 83 is provided in front of and behind the motor case 65 and the coaxial 83 is float-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 and can be tilted back and forth. it can. According to such an electric razor, the razor head 2 can be floated in all directions of front-back, left-right, and up-down to improve the degree of freedom of tilting motion of the razor head 2, so that the whiskers can be freely followed by changes in the skin surface. It is possible to provide an easy-to-use electric razor that can be cut.

A terminal packing 89 for sealing the lead terminal 88 of the motor 6 is attached to the lower part of the motor case 65. Further, after the mounting portion of the terminal packing 89 is closely fixed to the motor case 65 with the fixing ring 91, the motor case is provided with the engaging hole 93 and the engaging convex portion 94 for unevenly engaging 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 part of the motor case 65, and the fixing ring 91 is externally fitted to the mounting portion of the terminal packing 89 to fix the terminal packing 89 to the motor case 65. Therefore, the periphery of the lead terminal 88 can be hermetically sealed. Therefore, even if washing water may enter the inside of 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, by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engaging hole 93 and the engaging convex portion 94, the fixing ring 91 can be fixed to the motor case 65 inseparably. .. 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 surely performed. Can be maintained.

The fixed blade 31 of the sub-blade 14 composed of the 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. I tried to form 123. According to the fixed blade 31 of the sub-blade 14, it is possible to effectively raise the curly hair and the long hair while denting the skin surface with the raising promotion portion 123, so that the curly hair and the long hair in the raised state can be cut in the cutting region R1. Can be cut to shorten hair.

When the slit 31d is formed in the raised region R2 of the fixed blade 31, it is possible to prevent the curly hair and the long hair raised by the raising promoting portion 123 from being introduced into the slit 31d and falling on the skin surface. In addition, the curly hair and long hair captured by the slit 31d can be guided to the cutting region R1 and cut while being raised.

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 curly hair and the long hair captured by the slit 31d are kept in the raised state in the raised region. It can be guided to the slit 31d on the R2 side. Therefore, it is possible to cut the curly hair and the long hair more reliably to shorten the hair.

It is a longitudinal front view of the razor head which constitutes the electric razor which concerns on Example 1 of this invention. It is a front view of the electric razor which concerns on Example 1. FIG. It is a partially broken side view of a motor support structure. It is a vertical sectional side view of a razor head. It is an exploded perspective view of the vibrator structure. It is an exploded plan view of the vibrator structure. It is a top view which shows the reciprocating motion of a vibrator. It is a front view of the elastic support structure. It is an exploded front view of the head support structure. It is a partially broken front view of a motor support structure. FIG. 8 is a cross-sectional view taken along the line AA in FIG. It is a side view of a motor support structure. It is a vertical sectional front view which shows the mounting structure of a terminal packing. It is an exploded perspective view of a light emitting structure. It is a top view of the light emitting structure. FIG. 15 is a cross-sectional view taken along the line BB 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. FIG. 8 is a cross-sectional view taken along the line CC in FIG. It is a longitudinal side view which shows the oscillator structure of the electric razor which concerns on Example 2 of this invention. It is a longitudinal side view which shows the oscillator structure of the electric razor which concerns on Example 3 of this invention. It is a longitudinal side view which shows the oscillator 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 razor which concerns on Example 5 of this invention.

(Example 1) FIGS. 1 to 19 show Example 1 of the electric razor according to the present invention. The front-back, left-right, and up-down in this embodiment follow the crossing arrows shown in FIGS. 2 and 3 and the front-back, left-right, and up-down indications shown in the vicinity of each arrow. In FIG. 2, the electric razor is mainly composed of 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 swingable back and forth and left and right and movable in the vertical direction. .. The razor head 2 is provided on the upper part of the main body case 1. Above and below the front surface of the main body case 1, a lever-shaped 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. A motor 6, a secondary battery 7, a control board 8, and the like are arranged inside the main body case 1, and a shaving blade 9 is provided on the upper part of the rear surface of the main body case 1 (see FIG. 3). The inside of the main body case 1 is divided into an upper section 1A for accommodating the motor 6 and the motor case (support base) 65 and the like, and a lower section 1B for accommodating the secondary battery 7, the control board 8 and the LED 99. That is, the upper compartment 1A is a motor accommodating compartment that accommodates the motor 6 that drives the movable blades 21 and 22, and the motor case 65 that supports the motor 6. Further, the lower section 1B is a section for accommodating electrical components such as a secondary battery (power supply unit) 7 that supplies electric power to the LED 99 and the motor 6, a control circuit, and a control board 8 on which the secondary battery 7 is mounted. It has become.

(Razor head)
In FIGS. 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 and 17 for reciprocating the previous blades 11 to 14 are arranged inside the case 15, and the upper surface of the case 15 is arranged. A light emitting structure is provided on the side. Each of the main blades 11 and 12 is composed of movable blades 21 and 22 made of slit blades and fixed blades 23 and 24 made of net blades, and mainly finishes and cuts short hair. 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 inverted U by an outer blade holder 27 attached to and detached from the head case 15. It is kept in a character shape. 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 for converting 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 is a cleaning window opened on the front surface of the outer blade holder 27, 19 is a shutter for opening and closing the cleaning window 18, and 20 is an unlock button for the outer blade holder 27. By attaching the outer blade holder 27 and pouring fluid water through the cleaning window 18 with the shutter 19 open, the hair dust adhering to the movable blades 21, 22, 28, 29 and the like can be washed away.

One sub-blade 13 is arranged between the front and rear main blades 11 and 12, and the other sub-blade 14 is arranged 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 composed of metal slit blades, and the movable blades 28 and 29 of both sub-blades 13 and 14 are composed of metal comb blades. It is mainly used to cut long hair and curly hair. In order to reciprocate the movable blades 28 and 29 of the sub blades 13 and 14, the 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. ..

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. Inside the cases 36 and 37, the above-mentioned vibrator 16 is provided. 17 and a pair of left and right transmission links (conductors) 38 are housed. The upper and lower head cases 36 and 37 are made of plastic molded products, respectively. Drive windows 39 for projecting the drive shafts 25 and 26 of the vibrators 16 and 17 are opened in the left and right centers of the upper wall of the upper head case 36, and the drive shafts 25 and 26 and the drive windows 39 are provided. The space between the peripheral walls is sealed with the vibrator packing 40.

An inner frame 41 is projected on 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 corresponding to the inner frame 41, and the passive portion 53 of the vibrator 17 described later is directed toward the main body case 1 at the center of the left and right sides of the bottom frame 42. A drive opening 43 is formed to be exposed. Further, a pair of swing brackets 44 for connecting the swing frames 66, which will be described later, are projected upward so as to face both ends of the bottom frame 42, and the swing brackets 44 and both ends of the bottom frame 42 are projected upward. A swing opening 45 for the swing frame 66 is formed between them. On the lower surface side of the lower head case 37, the parts other than the drive opening 43 and the swing opening 45 are covered with the bottom frame 42, so that the vibrator structure and the like can be formed in the 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 side of the upper head case 36 (see FIG. 15).

(Vibrator structure)
In FIG. 5, of the pair of vibrators 16 and 17, the front vibrator 16 is composed of a clog-shaped vibrator base 16a 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 vibrator base 16a are guided and supported by a guide shaft 48 mounted on the lower head case 37 so as to be slidable to the left and right. Therefore, slide holes 16c that are slid-guided by the guide shaft 48 are formed in the left and right slide frame portions 16b so as to penetrate left and right. Further, slide ribs 16d are projected at three positions in the front and rear of the lower surface of the slide frame portion 16b. The left and right ends of the guide shaft 48 are sandwiched and fixed by bearing portions 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 front vibrator 16 is steadily guided and supported only by the left and right slides by the guide shaft 48 and the second guide seat 52 of the rear vibrator 17 that supports the slide rib 16d. In this way, the front vibrator 16 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 slides on the front side. When both the vibrators 16 and 17 slide back and forth in opposite directions with respect to the vibrator 16 of the above, they are relatively slid, and the front vibrator 16 and the second guide seat 52 are always in sliding contact with each other. There is.

Similar to the front vibrator 16, the rear vibrator 17 has a drive shaft 26 projecting from the upper surface of the vibrator base 17a, and the slide frame portion 17b slides left and right by the guide shaft 50 mounted on the lower head case 37. Guided and supported as much as possible. Reference numeral 17c is a slide hole, and the left and right ends of the guide shaft 50 are sandwiched 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-shaped 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 center of the left and right sides of the lower surface thereof. A passive portion 53 made of a rib wall is provided, and slide ribs 17d are projected on the front and rear sides of the left and right sides of the second guide seat 52. A first guide seat 51 for slidably supporting the slide rib 17d of the vibrator 17 is provided on the left and right walls of the drive opening 43 of the bottom frame 42, and the rear vibrator 17 is first guided. The seat 51 guides and supports it so that it can slide 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 rear vibrator 17 slides relative to the first guide seat 51. And the first guide seat 51 are always in sliding contact with each other. The sliding contact relationship structure between the front vibrator 16 and the second guide seat 52 and the sliding contact relationship structure between the rear vibrator 17 and the first guide seat 51 described above are described in Examples 2 and 2 described later. In No. 4, the same sliding contact relationship structure is used.

As described above, the rear vibrator 17 is dynamically guided and supported by the guide shaft 50 and the first guide seat 51 so that only the left and right slides are possible, and the front vibrator 16 is the guide shaft 48 and the first guide shaft 48. 2 The guide seat 52 is dynamically guided and supported so that only the left and right slides are possible. According to such a vibrator structure, each of the vibrators 16 and 17 is moved in the front-rear direction or diagonally only in the direction guided by the guide shafts 48 and 50 and the guide seats 51 and 52. By restricting movement in the direction, it is possible to reliably slide back and forth from one end to the other end of the reciprocating stroke. Therefore, even when the cutting load increases, the vibrators 16 and 17 can be restricted from moving in the front-rear direction and the oblique direction, and the movable blades 21 and 22 can always be reciprocated in opposite directions with an appropriate stroke. Further, since the power of the motor 6 can be reliably transmitted to the movable blades 21 and 22, the whiskers can be cut 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 if it acts, it is possible to more reliably prevent a part of the vibrators 16 and 17 from being deformed or damaged. Further, since the rear vibrator 17 is received by the first guide seat 51, when a strong pressing load acts on 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. As described above, according to the electric razor of the present embodiment, since one vibrator 17 receives and supports the other vibrator 16, it is often the case that a part of the other vibrator 16 is deformed or damaged. Can be prevented. Further, 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 a part of the other vibrator 17 is deformed or damaged. You can often prevent it from happening. Further, as the rear oscillator 17 is firmly supported, the front oscillator 16 is also strongly supported. As described above, in the pair of vibrators 16 and 17, at least one of the vibrators 16 may be guided and supported by the second guide seat 52 provided 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 is used to guide and support. That is, the former vibrator 16 is supported in the inner / outer direction by the latter vibrator 17 by overlapping the one vibrator 16 and the second guide seat 52 provided on the other vibrator 17 in the inner / outer direction (vertical direction). It was to so. Further, the guide seats 52 provided on the one vibrator 16 and the other vibrator 17 are supported so as to be overlapped with each other 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 is composed of an eccentric cam 54 fixed to the output shaft of the motor 6 and a passive portion 53 provided on the rear vibrator 17, and a pair of left and right transmission links 38 transfer the reciprocating power converted by the power conversion mechanism. Is transmitted to the oscillator 16 on the front side. As shown in FIGS. 5 and 6, the transmission link 38 is composed of a plate-shaped link that is long in the front-rear direction, and a fulcrum hole 55 in the center of the front-rear direction is a pair of left-right swing shaft bodies 56 that project downward from the upper head case 36. It is pivotally supported so that it can swing back and forth. Further, the elongated hole-shaped swing holes 57 provided in the front and rear of the transmission link 38 are engaged with the connecting pins 58 fixed to the upper surfaces of the front and rear vibrator bases 16a and 17a. As shown in FIG. 4, the swing shaft body 56 includes a tubular shaft main portion 59 projecting downward from the upper head case 36 and a shaft main portion continuously provided at the lower end of the shaft main portion 59. It is provided with a shaft portion 60 having a diameter smaller than 59.

In a state where the shaft portion 60 engages with the fulcrum hole 55 and the transmission link 38 is swingably supported, the step portion 61 at the lower end of the shaft main portion 59 abuts on the peripheral wall on the upper surface side of the fulcrum hole 55. Therefore, the upward movement of the transmission link 38 is restricted. Further, four round shaft-shaped pressing shafts (pressing bodies) 62 having rounded lower ends are projected downward on the upper wall of the upper head case 36, and these pressing shafts 62 are placed in front of and behind each swinging shaft body 56. The spherical portion at the lower end of the transmission link 38 receives the front and rear of the upper surface of the transmission link 38 (see FIG. 7). As a result, the transmission link 38 is restricted from moving upward by the holding shaft 62, and the swing hole 57 is surely prevented from being pulled out from the connecting pin 58. The presser shaft 62 projects downward from the upper head case 36 like the swing shaft body 56. In this embodiment, the pressing shaft 62 provided on the upper head case 36 and the stepped portion 61 of the swinging shaft body 56 can regulate the upward movement of the transmission link 38. That is, the step portion 61 of the swing shaft body 56 functions as a holding body together with the holding shaft 62, and preferably includes both the step portion 61 and the holding shaft 62, but at least the step portion 61 or the holding shaft 62 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 operation 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 slid back and forth appropriately to cut the whiskers more effectively. Further, since the swing center of the transmission link 38 is received by the step portion 61 to regulate the upward movement of the transmission link 38, the swing resistance acting on the transmission link 38 is minimized and the transmission link 38 is smoothed. Moreover, it can be swung back and forth accurately. Therefore, the transmission of the reciprocating motion between the adjacent vibrators 16 and 17 can be performed more accurately.

As described above, when the transmission link 38 is swingably supported by the swing shaft body 56 integrally formed with the upper head case 36, and the upward movement of the transmission link 38 is restricted by the step portion 61 and the holding shaft 62. Compared with the case where the swing shaft 56 and the presser shaft 62 are separately provided as independent parts, the number of parts can be reduced, and the transmission link 38 can be swingably supported without the need to use a retaining ring or the like. 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 assembly can be reduced. Further, since the transmission link 38 provided between the upper surfaces of the vibrators 16 and 17 is pressed and held by the pressing body 62, there is no room for the transmission link 38 to float away from each of the vibrators 16 and 17, and therefore, the pair of vibrators 16 -The transmission of the reciprocating motion between 17 can be performed more reliably with 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. Further, the razor head 2 is supported so as to be swingable back and forth by a first swing structure including a swing frame 66 fixed to the motor case 65. 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 swingable left and right and tiltable back and forth. The motor case 65 is made of a tubular plastic molded product that opens downward, and a pair of swing shafts 83 and three piece receiving seats 75 are projected on the front and rear peripheral surfaces of the tubular wall-shaped portion, and a pair on the left and right peripheral surfaces. The upper spring seat 69 is projected. The motor case 65 is fixed to the motor 6 with a screw 85 (see FIG. 10) screwed from the upper surface side thereof. Reference numeral 86 is 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, and these. It is composed of a floating spring 70 arranged between both spring seats 68 and 69. The floating spring 70 is formed of a compression coil spring, and constantly pushes up and urges the motor case 65 and the razor head 2. Therefore, the razor head 2 pressed against the skin surface can sink to the side of the main body case 1 together with the motor case 65.

When the razor head 2 and the motor case 65 are supported by the elastic support structure as described above, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk toward the main body case 1 side, and the razor head 2 is excessively applied to the skin surface. The floating spring 70 relaxes and absorbs the action of a strong pressing force, so that the skin feels soft when cutting the whiskers. Further, when cutting the whiskers, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 follows the change in the skin surface even on a three-dimensional skin surface such as around the chin. The beard can be cut accurately by making it adhere to the skin.

(First swing structure)
The first swing structure includes a swing frame 66 fixed to the motor case 65, a swing bracket 44 provided on the lower head case 37, and a front-rear swing shaft consisting of a pin connecting both 44 and 66 (first swing structure). 1 axis) 71 (see FIG. 1). As shown in FIGS. 9 and 11, the swing frame 66 includes a drum-shaped mounting seat 72 fastened to the upper surface of the motor case 65, and a pair of head arms 73 standing up from both side 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 mounting piece 74 on the front side and two mounting pieces 74 on the rear side are provided on the front and rear of the motor case 65. It is received and supported by a round boss-shaped piece receiving seat 75. By fastening the mounting piece 74 in this state with a screw (fastener) 76 (see FIG. 11) screwed into the piece receiving seat 75, the entire swing frame 66 is integrated with the motor case 65. By supporting the razor head 2 with the swing frame 66 in this way, 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 so as to be swingable back and forth with respect to the main body case 1. A cam passage 82 for passing the eccentric cam 54 is formed in the center of the mounting seat 72.

In FIG. 11, the mounting piece 74 is formed in an inverted L shape by a piece base portion 74a continuously extending forward and backward from the mounting seat 72 and a fastening portion 74b continuously extending downward from the piece base portion 74a. The piece base portion 74a is engaged and held by engaging ribs (engaging portions) 77 provided on the front and rear surfaces of the motor case 65, and the fastening portion 74b is fastened and fixed to the piece seat by screws 76. Further, in the state where the swing frame 66 is assembled to the motor case 65, the regulation notches 78 formed so as to face the left and right corners of the mounting seat 72 and the head arm 73 are rounds protruding from the left and right on the upper surface of the motor case 65. It is engaged and held by a boss-shaped regulation protrusion 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 engaging ribs 77 so as not to move back and forth. The regulation protrusion 79 is formed with a lead insertion hole 80 that penetrates vertically.

As described above, in the state where the swing frame 66 is assembled to the motor case 65, the three mounting pieces 74 are received and supported by the piece receiving seats 75, and the left and right side surfaces of the piece base 74a are engaged by the engaging ribs 77. It is jointly held, the regulation notch 78 is engaged and held by the regulation protrusion 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 it cannot tilt in the front-rear direction and the left-right direction. Along with this, the external force moment acting on the head arm 73 can be dispersed and burdened on the piece receiving seat 75, the engaging rib 77, and the regulation protrusion 79. Therefore, the swing frame 66 can be more firmly integrated with the motor case 65, and the razor head 2 can be supported 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 whiskers.

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. An arm tip portion 73c that is continuously bent upward is provided on the arm tip portion 73b, and a pin hole 81 is formed in the arm tip portion 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. It is connected as possible. As a result, the entire razor head 2 is supported so as to swing back and forth with respect to the head arm 73 (see FIG. 12).

(Second swing structure)
In FIGS. 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 front and rear inside the main body case 1. It is composed of a floating groove 84 arranged to face the surface. The floating groove 84 is partitioned by an inverted U-shaped rib wall that is long vertically, and its left-right 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 closed by the rib wall. It has been. 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, and therefore the razor head. 2 and structures such as the motor case 65 can be tilted (swinged) left and right around the swing shaft 83. That is, the razor head 2 is supported so as to swing left and right with respect to the main body case 1. Further, the structure such as the razor head 2 and the motor case 65 can be tilted (swinged) back and forth with the front and rear swing shaft 83 as a fulcrum. That is, the razor head 2 is supported so as to be swingable back and forth with respect to the main body case 1. Further, by moving the swing shaft 83 up and down along the floating groove 84, the structure 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-back, left-right, and up-down to obtain the razor head 2. The degree of freedom of tilting motion can be improved. Therefore, it is possible to provide an electric razor having excellent usability, which can freely cut a whiskers 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 under the motor case 65 in order to seal these lead terminals 88 in a watertight manner. It is installed. In FIGS. 8, 9, and 13, the terminal packing 89 is formed in a container shape having an opening on the upper surface, and the opening is fitted and mounted on a sealing seat 90 provided on the peripheral surface of the lower end of the motor case 65. , It is closely fixed by a fixing ring 91 that fits outside the terminal packing 89. A pair of connecting arms 92 are integrally provided on the opposing edges of the fixing ring 91, and the engaging holes 93 provided in the connecting arms 92 are engaged with the engaging convex portions 94 projecting from the front and rear peripheral surfaces of the motor case 65. By fitting, the fixing ring 91 is integrated with the motor case 65. The lead wire 87 is led out below the terminal packing 89 from the cylinder port 89a provided on the bottom wall of the terminal packing 89. The electric 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 sealing structure, the terminal packing 89 is fixed to the motor case 65 by covering the lower part of the motor case 65 and further fitting the fixing ring 91 to the mounting portion of the terminal packing 89. Then, 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 if washing water may enter the inside of the main body case 1 when washing the razor head 2 with water, it is surely prevented that the lead terminal 88 or the lead wire 87 connected to the terminal 88 is short-circuited. it can. Further, by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engaging hole 93 and the engaging convex portion 94, the fixing ring 91 can be fixed to the motor case 65 inseparably. .. 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 surely performed. 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 perform shaving in an entertaining state. Specifically, as shown in FIG. 14, a U-shaped accommodating recess 97 in a plan view is formed on the upper surface of the upper head case 36, and a light emitting substrate 98 having a U-shaped plan view is accommodated therein. There is. A pair of front and rear LEDs (light sources) 99 that irradiate light (visible light) toward the movable blades 21 and 22, respectively, are mounted on the left and right plate surfaces of the light emitting substrate 98. In order to seal the inside of the accommodating recess 97 in a watertight manner and protect the light emitting substrate 98 and the LED 99, the opening of the accommodating recess 97 is closed by a cover body 100 having a U-shape in a 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 made of a translucent plastic material, and quadrangular light guide portions 102 are formed in a bulge on the front and rear of the upper surfaces of the left and right plate surfaces facing the LED 99. Further, a lead through port 104 for passing the lead wire 103 led out from the light emitting substrate 98 is formed adjacent to the light guide portion 102 on the rear side (see FIG. 16). A packing 105 is integrally formed on the peripheral edge of the cover body 100 including the lead through port 104 by performing a two-color molding process. The protective plate 101 is made of a metal plate material, and a through port 106 for the drive shafts 25 and 26 and an irradiation window 107 for exposing the light guide portion 102 are opened on the plate surface. The four corners of the plate surface of the protective 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 projects above the irradiation window 107 (FIG. 15). 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 is introduced into the main body case 1. There is. When the middle part of the lead wire 103 led out from the light emitting board 98 is held by the lead insertion hole 80 in this way, the middle part of the lead wire 103 is caused when the motor case 65 swings back and forth, left and right, or floats up and down. It is possible to prevent the part from being caught by another object and being pulled, or being pinched in a gap and being crushed. Further, the lead wire 103 between the light emitting substrate 98 and the regulation protrusion 79 can be smoothly bent and displaced in accordance with the tilting operation of the razor head 2. Therefore, as the razor head 2 tilts back and forth, it is possible to prevent the lead wire 103 from being repeatedly subjected to an external force to break the wire, and it also prevents the tilting operation of the razor head 2 from being disturbed by the lead wire 103. it can. The electric power of the secondary battery 7 is supplied to the LED 99 via the control board 8, the lead wire 103, and the light emitting board 98 in the order described. By operating the switch member 4, the control circuit mounted on the control board 8 controls to turn on or off the drive 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 is inserted into the lead packing 109 mounted on the partition wall 1C that separates the upper section 1A and the lower section 1B, and then the control board. It is connected to No. 8 (see FIG. 17). Therefore, when the razor head 2 is washed with water, the washing water that has entered the inside of the upper section 1A does not enter the lower section 1B side. The lead packing 109 is formed with four lead insertion holes corresponding to the lead wires 87 and 103 so as to penetrate vertically.

When the light emitting structure is provided inside the razor head 2 as described above, the movable blades 21 and 22 and the fixed blades 23 and 24 and the peripheral wall of the razor head 2 are turned on by lighting the LED 99 provided on the light emitting substrate 98 at the time of shaving. Can be brightly illuminated with the light emitted from the LED 99, so that the whiskers can be cut in an interesting state by the light leaking from the fixed blades 23 and 24. Further, when the movable blades 21 and 22 and the fixed blades 23 and 24 are coated with a photocatalyst, the photocatalyst can be effectively excited by the light emitted from the LED 99 to exert a bactericidal action. Further, by changing the light emitting state of the LED 99 according to the remaining charge of the secondary battery 7, the power consumption status of the secondary battery 7 can be clearly recognized. Since the light emitting board 98 is formed in a U shape and the light source 99 is mounted on the plate surfaces separated to the left and right, it is sufficient to prepare one light emitting board 98 on which a plurality of LEDs 99 are mounted. Therefore, the light emitting board 98 and the LED 99 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 individually provided at two positions on the left and right.

Further, the upper surface of the cover body 100 is covered with the protective plate 101, and the light guide portion 102 provided on the cover body 100 is projected above the irradiation window 107 of the protective plate 101. According to such a light emitting structure, the hair dust that has fallen on the upper surface of the light guide portion 102 is dropped to the upper surface side of the protective plate 101 due to the movement of the razor head 2 tilting back and forth and left and right and the reciprocating vibration operation of the cutting blades 11 and 12. Therefore, it is possible to prevent the light guide portion 102 from being covered with hair dust. Further, since the upper surface of the cover body 100 that does not face the irradiation window 107 is covered with the protective plate 101 to block light, the inside of the razor head 2 is effective with the spotlight-like local light emitted from the light guide portion 102. Can be illuminated.

In FIG. 3, the shaving blade 9 can be swung from the standby posture to a horizontal driving posture swinging upward around the shaft 113 by pushing up and sliding the shaving lever 112, and in the driving posture, the shaving blade 9 can be oscillated. It is reciprocally driven by the vibrator 114 dedicated to the 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 mainly cut long hair and curly hair. The vibrator 114 is formed in a long lever shape in the front-rear direction, and the front-rear halfway portion thereof is supported by a fulcrum shaft 115 provided in the motor case 65 so as to be horizontally swingable. Further, 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. When the shaving blade 9 is switched to the drive posture, the passive pin 118 integrated with the movable blade 9b engages with the drive groove 117 to inherit 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, when the vibrator 114 is oscillatedly supported by the fulcrum shaft 115 provided on the motor case 65, the number of parts can be reduced and the assembling property 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 assembling property 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. 18 and 19. As described above, the movable blade 29 of the sub-blade 14 is composed of a comb blade having cutting blades 29a in the front and rear, and the fixed blade 31 is formed by a slit blade, but the curly hair and the long hair are effectively fixed blade 31. The fixed blade 31 was configured as follows in order to introduce it into the inside of the above. The fixed blade 31 is formed in an inverted V shape by a vertical vertical wall and an upper wall that is continuously bent backward at an acute angle 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 in which the movable blade 29 is not in sliding contact is provided. Further, the fixed blade 31 in the raised region R2 is provided with a partially arcuate outer protrusion-shaped raising promotion portion (outer protrusion) 123 so that the skin surface is dented and tensioned so that curly hair and long hair can be effectively raised. I have to. The raising promotion portion 123 is formed to be curved in a semicircular shape from the upper curved base portion adjacent to the inclined lower end of the movable blade 29 to the vertical vertical wall.

As shown in FIG. 18, rib-shaped small blades 31a and slits (blade holes) 31b are formed in the cutting region R1 at regular intervals, and similar small blades 31c and slits 31d are formed in the raised region R2. Has been done. The small blade 31a and the slit 31b in the cutting region R1 are obliquely refracted in a state of 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 after refraction. It is continuous with the small blade 31a and the slit 31b. When the slit 31d is formed in the raised region R2 in this way, it is possible to prevent the curly hair and the long hair raised by the raising promoting portion 123 from being introduced into the slit 31d and falling on the skin surface. Further, when the small blade 31a and the slit 31b in the cutting region R1 and the small blade 31c and the slit 31d in the raised region R2 are continuous in the front-rear direction, the curly hair and the long hair captured by the slit 31d in the raised region R2 are raised. In this state, the hair can be reliably cut by guiding it toward the slit 31b of the cutting region R1 to shorten the hair.

In FIG. 19, the thickness of the fixed blade 31 is T1, the protrusion dimension in the direction orthogonal to the inclined upper wall (inclined surface) of the raising promotion portion 123 in the raising region R2 is T2, and the protrusion dimension in the vertical direction of the raising promotion portion 123 is When T3 and the vertical protrusion dimension from the curved surface of the raising promotion portion 123 to the inclined upper end of the fixed blade 31 are T4, it is preferable that each dimension T1 to T4 is set so as 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 / 31c and the slits 31b / 31d are continuous in the front-rear direction, the small blades 31a / 31c are easily deformed inward and outward by the length of the total length of the small blades 31a / 31c. However, since the bridge entanglement portion 124 in the cutting region R1 is obliquely refracted and the portion of the small blade 31a that is further obliquely refracted is received by the movable blade 29, the pressing surface of the skin surface is pressed against the raising promotion portion 123. Even when a force is applied, it is possible to prevent the small blade 31a in the cutting region R1 from being dented and deformed, and to reliably cut curly hair and long hair. As shown in FIG. 19, the sliding surface of the small blade 31a received by the movable blade 29 is provided with a bridging portion 124 formed by half etching, and the small blade adjacent to the bridging portion 124 is provided. By bridging and integrating the 31a and 31c with each other, the improvement strength of the small blades 31a and 31c is increased and deformation is prevented.

Further, when the formation position of the partially arcuate raised promoting portion 123 is set below the inclined upper end of the fixed blade 31 by the dimension T4, the skin contact of the raised raising promoting portion 123 can be alleviated.
When the dimensional relationship between the raised dimension T2 of the raised promoting portion 123 from the inclined surface and the raised region R2 is set to satisfy the inequality (T2 <R2), the structural strength of the raised promoting portion 123 is improved. Sufficient strength can be secured for the raising promotion section 123.
The formation region of the raising promotion portion 123 is from the upper curved base portion adjacent to the inclined lower end of the movable blade 29 to the vertical vertical wall on the rear side. Further, the cutting region R1 is formed from the upper tip to the lower tip of the cutting blade 29a of the movable blade 29. Further, the dimensional relationship between the cutting region R1 and the raised region R2 is (R1 <R2). According to such a raised structure, the raised promoting portion 123 can be formed into a curved shape having a large radius of curvature, so that the skin contact can be made good.
When the dimensional relationship between the protruding dimension T3 and the protruding dimension T4 is set so as to satisfy the inequality (T4 <T3), the raising promotion portion 123 is appropriately projected from the inclined surface of the fixed blade 31 to cause long hair or curly hair. Brushing can be performed effectively.
When the thickness of the fixed blade 31 is T1 and the protruding dimension of the raised promotion 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 such, the raising effect by the raising promotion unit 123 can be improved.
When the dimensional relationship of each part is set so as to satisfy the inequality (T1 <T4 <T2 <T3), the skin contact of the raising promotion part 123 is soft and good while effectively raising long hair and curly hair. Can be.

The electric razor 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 provided with movable blades 21 and 22 and fixed blades 23 and 24, and a pair of transducers 16 and 17 for driving the movable blades 21 and 22 are used as razor heads. Arranged inside the head case 15 provided in 2, 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, and the pair of vibrators 16 17 is the reciprocating power output from the power conversion mechanism, and is intended for reciprocating electric razors that are reciprocated and driven in opposite directions. Then, at least one of the vibrators 16 and 17 is supported by the guide seats 51 and 52 provided on the other vibrators 16 and 17.

According to the above-mentioned vibrator structure, even when a strong pressing load (skin reaction force) acts on the vibrators 16 and 17 via the cutting blades 11 and 12, one of the vibrators 16 and 17 is the other vibrator. It can accept and support 17/16. Therefore, it is possible to 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 provided with 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 used as razor heads. It is arranged inside the head case 15 provided in 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, and the pair The vibrators 16 and 17 are reciprocating electric razors driven reciprocatingly in opposite directions by the reciprocating power output from the power conversion mechanism. One of the vibrators 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 configuration, even when a strong pressing load (skin reaction force) acts on the vibrators 16 and 17 via the cutting blades 11 and 12, one of the vibrators 17 is the first of the lower 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, it is possible to prevent the vibrator 16 from sinking in the pressing load direction. Therefore, it is possible to prevent a part of the vibrators 16 and 17 from being deformed or damaged. Further, 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 is strengthened and the vibrator 17 can be well prevented from being deformed or damaged. 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 unit 53 provided on one of the vibrators 17 and reciprocally driven by the eccentric cam 54. A transmitter 38 that transmits the reciprocating motion of the one oscillator 17 to the other oscillator 16 is provided between the one oscillator 17 and the other oscillator 16.

According to the above transmission structure, the reciprocating motion of the vibrator 17 driven by the power conversion mechanism is reliably transmitted to the other vibrator 16 via the transmission body 38, and corresponds to each of the vibrators 16 and 17. 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 slid back and forth appropriately to cut the whiskers more effectively.

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 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. The upper head case 36 is provided with a holding body 62 that regulates 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 holding body 62 are separately provided as independent parts, and the transmission link 38 can be swung without the need to use a retaining ring or the like. Since the shaft can be supported as much as possible, 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 pressed and held by the holding body 62, there is no room for the transmission link 38 to float away from each of the vibrators 16 and 17, and therefore, the transmission link 38 reciprocates. The movement can be transmitted more reliably.

The presser body 62 is composed of a regulating protrusion formed integrally with the upper head case 36.

As described above, when the pressing body 62 is composed of the regulating protrusions formed integrally with the upper head case 36, the supporting structure of the transmission link 38 is provided as compared with the case where the pressing body 62 is formed as an independent component. It can be simplified and reduced in cost. There is also an advantage that the labor of assembly can be reduced.

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 step portion 61 is in contact with the upper surface of the transmission link 38 to restrict the upward movement of the transmission link 38.

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

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

According to such a vibrator structure, 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, it is strong against the vibrators 16 and 17 via 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 transmission loss of the motor power and the reduction of the drive stroke of the movable blades 21 and 22 can be eliminated, and the whiskers can be cut 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 slide-guided by a pair of guide shafts 48 and 50 mounted on the head case 15, and the vibrators 16 and 17 are guided and supported only by left and right slides.

As described above, when the slide frame portions 16b and 17b provided on the pair of vibrators 16 and 17 are slide-guided by the pair of guide shafts 48 and 50, each vibrator 16 and 17 can be slid only to the left and right. Can be dynamically guided and supported. Therefore, when the cutting load of the cutting blades 11 and 12 increases, the vibrators 16 and 17 are restricted from shifting in the front-rear direction and the diagonal direction, and the movable blades 21 and 22 are always opposed to each other with an appropriate stroke. It can be reciprocated to cut the beard properly.

A U-shaped accommodating recess 97 viewed from a plane is formed in the upper surface of the upper head case 36, and a U-shaped light emitting substrate 98 viewed from a plane is accommodated inside the accommodating 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 accommodating recess 97 is closed by a U-shaped translucent cover body 100 when viewed from a plane.

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 at the time of shaving, so that the movable blades 21 and 22 and the fixed blades 23 and 24 and the razor head 2 are turned on. Since the surrounding wall can be brightly illuminated with the light emitted from the light source 99, the whiskers can be cut in an interesting state. Further, when the movable blades 21 and 22 and the fixed blades 23 and 24 are coated with a photocatalyst, the photocatalyst can be effectively excited by the light emitted from the light source 99 to exert a bactericidal action. Further, by changing the light emitting state of the light source 99 according to the remaining charge of the secondary battery 7, the power consumption status of the secondary battery 7 can be clearly recognized. Since the light emitting board 98 is formed in a U shape and the light source 99 is mounted on the plate surfaces separated to the left and right, it is sufficient to prepare one light emitting board 98 on which a plurality of light sources 99 are mounted. Therefore, the light emitting board 98 and Compared with the case where the light sources 99 are individually provided at two locations on the left and right 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. The light guide portion 102 provided on the cover body 100 corresponding to the light source 99 projects above the irradiation window 107 opened in the protective plate 101.

According to such a light emitting structure, the hair dust that has fallen on the upper surface of the light guide portion 102 is dropped to the upper surface side of the protective plate 101 due to the movement of the razor head 2 tilting back and forth and left and right and the reciprocating vibration operation of the cutting blades 11 and 12. Therefore, it is possible to prevent the light guide portion 102 from being covered with hair dust. Further, since the upper surface of the cover body 100 that does not face the irradiation window 107 is covered with the protective plate 101 to block light, the inside of the razor head 2 is effective with the spotlight-like local light emitted from the light guide portion 102. Can be illuminated.

A motor case 65 that supports 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 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 side ends of the mounting seat 72, and the upper end of the arm 73 is provided on 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). The mounting piece 74 projecting downward from the front and rear of the mounting seat 72 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.

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. Further, the razor head 2 can be tilted back and forth along the skin surface as intended by the user to smoothly cut the whiskers.

The mounting piece 74 is formed of a piece base portion 74a that extends continuously to the mounting seat 72 in the front-rear direction and a fastening portion 74b that extends continuously downward to the piece base portion 74a. The fastening portion 74b is fastened and fixed to the piece receiving 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 on the motor case 65.

According to such a fixed structure, the swing 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 regulation notches 78 formed so as to face the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the regulation protrusions 79 protruding from the left and right on the upper surface of the motor case 65.

As described above, when the regulation notches 78 formed in the left and right corners of the mounting seat 72 and the head arm 73 are engaged and held by the regulation protrusions 79 protruding from the motor case 65, the external force moment acting on the head arm 73 is applied. It can also be distributed and burdened on the regulation protrusion 79. Therefore, the swing frame 66 can be more firmly integrated with the motor case 65, and the razor head 2 can be supported 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 accommodating recess 97 of the upper head case 36 are electrically connected via a plurality of lead wires 103. The middle portion of the plurality of lead wires 103 is inserted into the lead insertion holes 80 that penetrate the regulation protrusions 79 in the vertical direction.

As described above, when the midway 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 regulation protrusion 79, the lead wire is tilted back and forth when the razor head 2 is tilted back and forth. It is possible to prevent the middle portion of 103 from being caught by another object and pulled, or being pinched in a gap and being crushed. Further, the lead wire 103 between the light emitting substrate 98 and the regulation protrusion 79 can be smoothly bent and displaced in accordance with the tilting operation of the razor head 2. Therefore, as the razor head 2 tilts back and forth, it is possible to prevent the lead wire 103 from being repeatedly subjected to an external force to break the wire, and it also prevents the tilting operation of the razor head 2 from being disturbed by the lead wire 103. it can.

The razor head 2 and the motor case 65 are floatably supported 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 in 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, and both springs. It is equipped with a floating spring 70 that is arranged between the seats 68 and 69 and pushes up and urges the motor case 65.

When the razor head 2 and the motor case 65 are supported by the elastic support structure as described above, when the razor head 2 is strongly pressed against the skin surface, the razor head 2 is sunk toward the main body case 1 side, and the razor head 2 is excessively applied to the skin surface. The floating spring 70 can relax and absorb the action of a large pressing force. Further, when cutting the whiskers, the razor head 2 is pressed and urged toward the skin surface by the floating spring 70, so that the razor head 2 follows the change in the skin surface even on a three-dimensional skin surface such as around the chin. Can be in close contact. Therefore, it is possible to accurately cut the beard while softening the skin contact at the time of cutting the beard.

A second shaft 83 that supports the razor head 2 and the motor case 65 so as to swing left and right is provided on the front and rear surfaces of the motor case 65 below the upper spring seat 69. A floating groove 84 that floatly supports 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 float-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, and moreover. Can be supported so that it can tilt back and forth. According to such an electric razor, the razor head 2 can be floated in all directions of front-back, left-right, and up-down to improve the degree of freedom of tilting motion of the razor head 2, so that the whiskers can be freely followed by changes in the skin surface. It is possible to provide an easy-to-use electric razor that can be cut.

A container-shaped terminal packing 89 that watertightly seals the lead terminal 88 of the motor 6 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. 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 convex portions 94 that engage with each other in a concave-convex manner.

According to such a sealing structure, the terminal packing 89 is attached to the lower part of the motor case 65, and the fixing ring 91 is externally fitted to the mounting portion of the terminal packing 89 to fix the terminal packing 89 to the motor case 65. Therefore, the periphery of the lead terminal 88 can be hermetically sealed. Therefore, even if washing water may enter the inside of 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, by fixing the connecting arm 92 provided on the fixing ring 91 to the motor case 65 via the engaging hole 93 and the engaging convex portion 94, the fixing ring 91 can be fixed to the motor case 65 inseparably. .. 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 surely performed. 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 simultaneously reciprocated 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 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. An external protrusion-shaped raising promotion portion 123 is formed on the fixed blade 31 in the raising region R2.

According to the fixed blade 31 of the sub-blade 14 configured as described above, the curly hair and long hair can be effectively raised by tensioning the skin surface while denting it with the raising promotion portion 123, so that the curly hair and long hair in the raised state can be effectively raised. 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.

When the slit 31d is formed in the raised region R2 of the fixed blade 31 in this way, it is possible to prevent the curly hair and the long hair raised by the raising promoting portion 123 from being introduced into the slit 31d and falling on the skin surface. In addition, the curly hair and long hair captured by the slit 31d can be guided to the cutting region R1 and cut while being raised.

The slit 31b formed in the cutting region R1 of the fixed blade 31 of the sub blade 14 and the 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 curly hair or long hair captured by the slit 31d is in a raised state. It can be guided to the slit 31d on the raised region R2 side as it is. Therefore, it is possible to cut the curly hair and the long hair more reliably to shorten the hair.

(Example 2) FIG. 20 shows Example 2 of the present invention in which the vibrator structure is modified. There, as in the vibrator structure of the first embodiment, the head case 15 is composed of the upper head case 36 and the lower head case 37, and the front vibrator 16 and the rear vibrator 17 are both inside the head case 15. It houses a pair of left and right transmission links 38 that connect the vibrators 16 and 17. In the vibrator structure of the second embodiment, the swing shaft body 56 is integrally provided on the lower surface of the transmission link 38 with respect to the vibrator structure of the first embodiment, and the shaft portion 60 below the swing shaft body 56 is supported by the support frame. The difference is that it is supported by the body 126 and the transmission link 38 is supported so as to be able to swing left and right. Further, the difference is that the support frame body 126 and the pair of left and right guide plates 127 guide and support the vibrators 16 and 17 freely and dynamically only by sliding left and right.

The support frame body 126 and the pair of guide plates 127 are formed of long left and right plates, and the left and right ends of the support frame body 126, the left and right ends of the guide plate 127, and the front edge or the rear edge are the upper head case 36 and the lower head case. It is sandwiched and fixed at the joint of 37. A fulcrum hole 55 for supporting the shaft portion 60 is formed at the center of the front and rear of the support frame body 126. Further, the spherical portion at the lower end of the pressing shaft 62 provided on the upper head case 36 presses and holds the front and rear of the upper surface of the transmission link 38. Since the other parts are the same as those in the first embodiment, the same members are designated by the same reference numerals and the description thereof will be omitted. The same shall apply in the following examples.

(Example 3) FIG. 21 shows Example 3 of the present invention in which the vibrator structure is modified. There, bifurcated passive portions 53 and 53 are provided above and below the facing surfaces of the front vibrator 16 and the rear vibrator 17, and the passive portions 53 and 53 are driven in a crank shape. An eccentric cam 54 provided with a 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. The second guide seat (guide seat) 52 is provided. Each of the vibrators 16 and 17 includes box-shaped bases 16e and 17e that open forward or backward, and the bases 16e and 17e are supported by a pair of left and right elastic arms 16f and 17f to support the bases 16e and 17e. The whole of was supported so that it could be moved left and right. In this embodiment, the first guide seat 51 and the second guide seat 52 are provided on the front and rear vibrators 16 and 17, so that the vibrators 16 and 17 support the other vibrators 17 and 16. According to such a vibrator structure, since 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, 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 guide and support each other via the first guide seat 51 and the second guide seat 52. As in the case of the vibrators 16 and 17 of the first embodiment, when the bases 16e and 17e are slide-supported by the guide shafts 48 and 50, even if a strong pressing load acts on the vibrators 16 and 17. Subduction 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 relatively when both the vibrators 16 and 17 slide back and forth in opposite directions. The rear vibrator 17 and the second guide seat 52 are relatively slid 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 with each other, and the rear vibrator 17 and the second guide seat 52 are also in sliding contact with each other.

(Example 4) FIG. 22 shows Example 4 of the present invention in which the vibrator structure is modified. 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, an oscillator 16 for driving the main blade 11 and the sub blade 13 and an oscillator 17 for driving the shaving blade 9 are provided inside the head case 15, and the reciprocating operation of the oscillator 17 is transmitted to the oscillator 16 by the transmission link 38. I tried to tell. The front vibrator 16 is steadily supported only by the left and right slides by the guide shaft 48 and the second guide seat 52 provided on the vibrator 17, and the rear vibrator 17 is supported by the guide shaft 50 and the lower side. Only the left and right slides are steadily supported by the first guide seat 51 provided on the head case 37. A support frame body 126 is fixed inside the upper head case 36, and the transmission link 38 is swingably supported by the swing shaft body 56 fixed to the frame body 126. As can be understood from this embodiment, the vibrators 16 and 17 need not be provided corresponding to the pair of main blades 11 and 12, and the two cutting blades (main blade 11 and shaving blade 9) are reciprocally driven. Anything that can be used may be sufficient, and the main blade 11 and the sub blades 13 and 14 may be reciprocally driven.

(Example 5) FIG. 23 shows Example 5 of the present invention in which the structure of the transmitter is modified. There, racks 131 and 132 are provided on the left and right sides of the facing surfaces of the front and rear vibrators 16 and 17, and pinions 133 and 134 are provided between the corresponding racks 131 and 132, and the rear vibrator 17 reciprocates. Can be transmitted to the oscillator 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, and the reciprocating motion of the rear vibrator 17 is steadily transmitted to the rear vibrator 16 on the front side.

The presser body 62 does not need to be formed in a round shaft shape, and has a rib-shaped regulating protrusion that protrudes downward from the case wall of the upper head case 36 facing the transmission link 38 and abuts on the upper surface of the transmission link 38. It may be composed of rod-shaped protrusions. As for the engaging hole 93 and the engaging convex portion 94 that engage with each other unevenly, the engaging hole 93 may be provided on the motor case 65 and the engaging convex portion 94 may be provided on the connecting arm 92. The fulcrum hole 55 does not have 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 Oscillator 17 Oscillator 16b Slide frame 17b Slide frame 21 Movable blade 22 Movable blade 23 Fixed blade 24 Fixed blade 29 Movable blade 31 Fixed blade 31b Slit 31d Slit 36 Upper head case 37 Lower head case 38 Transmission link (transmission body)
44 Swing bracket 48 Guide shaft 50 Guide shaft 51 1st guide seat 52 2nd guide seat 53 Passive part 54 Eccentric cam 56 Swing shaft body 60 Shaft part 61 Step part 62 Presser body 65 Motor case 66 Swing frame 68 Lower spring Seat 69 Upper spring Seat 70 Floating spring 71 1st axis 72 Mounting seat 73 Head arm 74 Mounting piece 74a Piece base 74b Fastening part 75 Piece receiving seat 76 Fastener 77 Engaging part 78 Regulatory notch 79 Regulatory protrusion 80 Lead insertion hole 83 2-axis 84 Floating groove 88 Lead terminal 89 Terminal packing 91 Fixing ring 92 Connecting arm 93 Engaging hole 94 Engaging convex part 97 Accommodating concave part 98 Light emitting board 99 Light source 100 Cover body 101 Protective plate 102 Light guide part 103 Lead wire 107 Irradiation window 123 Raised area R1 Cut area R2 Raised area

Claims (6)

The razor head (2) is provided with a pair of front and rear cutting blades (11.12) having a movable blade (21.22) and a fixed blade (23/24), and a pair for driving each movable blade (21.22). The vibrator (16.17) is arranged inside the head case (15) provided on the razor head (2), and the motor is located between the motor (6) and the pair of vibrators (16.17). A power conversion mechanism that converts the rotational power of (6) into reciprocating power is provided.
A pair of vibrators (16, 17) is a reciprocating electric razor that is reciprocated and driven in opposite directions by the reciprocating power output from the power conversion mechanism.
At least one oscillator (16.17) is supported by a guide seat (51.52) provided on the other oscillator (16.17) .
The power conversion mechanism comprises an eccentric cam (54) fixed to the output shaft of the motor (6) and a passive unit (53) provided on one of the vibrators (17) and reciprocally driven by the eccentric cam (54). I have
A transmitter (38) is provided between the one oscillator (17) and the other oscillator (16) to transmit the reciprocating motion of the one oscillator (17) to the other oscillator (16). electric shaver, characterized in that there. 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 and 17) can be reciprocally oscillated by the oscillating shaft body (56) protruding downward from the upper head case (36). It is axially supported and
The electric razor according to claim 1, wherein the upper head case (36) is provided with a holding body (62) for restricting the upward movement of the transmission link (38). The electric razor according to claim 2, wherein the holding body (62) is formed of a regulating protrusion integrally formed 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 electricity according to claim 2 or 3, wherein the step portion (61) is in contact with the upper surface of the transmission link (38), and the swing shaft body (56) regulates the upward movement of the transmission link (38). Razor. 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 to the left and right.
The electricity according to any one of claims 2 to 4, wherein the other vibrator (16) is guided and supported by a second guide seat (52) provided on the one vibrator (17) so as to be slidable to the left and right. Razor. Slide frame portions (16b and 17b) are formed on each of the pair of vibrators (16 and 17).
The slide frame portions (16b and 17b) are guided by a pair of guide shafts (48 and 50) mounted on the head case (15), and each vibrator (16 and 17) is guided and supported so that only left and right slides are possible. The electric razor according to any one of claims 2 to 5.

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