JPH10201963A - Rotary electric shaver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary type electric shaver which can make also finish shaving while a coarse shaving process is being performed. SOLUTION: A shaver unit 3 is structured so that stationary comb-form blades 31 for coarse shaving and movable comb-form blades 30 to slide linearly reciprocating on the inner surfaces of the stationary blades 31 are adjoiningly arranged parallel with an outer blade for finish shaving and a rotary inner blade. The shaver unit 3 is mounted swingably on a drive chassis 23 furnished in the upper part of the body case 1. the movable comb-form blades 30 and rotary inner blade are driven by a common motor 35 mounted on the drive chassis 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric shaver in which a reciprocating blade is arranged in parallel with a rotary blade.

[0002]

2. Description of the Related Art A rotary electric shaver is, for example, disclosed in Japanese Patent Application Laid-Open No. 6-304346, in which a cylindrical rotary inner blade provided with a number of spiral cutting blades on a peripheral surface is arranged in an arch shape. Since the blade is slid and rotated against the blade, there is no dead center during driving as in the case of the reciprocating inner blade, and the smooth and uniform sharpness due to the travel of the spiral cutting blade is always exerted over the entire cutting action area of the outer blade. It has the advantage of less vibration and driving noise during driving than a reciprocating electric shaver.

[0003]

In recent years, in such a rotary electric shaver, a reciprocating blade is arranged close to a rotary blade to combine the advantages of both the rotary type and the reciprocating type. There is an idea about electric razors. In particular, by increasing the mesh size of the outer blade or by making the outer blade itself a comb blade, the reciprocating blade is used for rough shaving, and the rotary blade is subjected to finishing shaving. It is possible.

[0004] However, when the reciprocating blade and the rotary blade are arranged side by side, since their respective operation modes are different, a drive transmission system for driving each blade is arranged in close proximity. Therefore, they may interfere with each other. For example, high-speed vibration of a vibrator, which is a reciprocating drive transmission system, tends to affect the meshing state of transmission gears, which are rotary drive transmission systems, and both drive transmission systems are close to each other, Each component needs to be composed of fine parts, which reduces their assemblability, reduces the degree of freedom in design, and increases the area around the blades, hinders skin contact and reduces practicality. .

Further, in such a rotary electric shaver, a sharp shaving blade is provided so as to be vertically slidable with respect to a main body case so as to be capable of finishing shaving while rough shaving, and the main shaving blade is slid upward. It is also conceivable to employ a combination shaving method in which the main shaving blade is used to perform rough shaving, long shaving, and custom shaving while shaving with the sharpening blade.

However, in such a case, since the shaving blade is provided separately from the main blade and is provided at a distant position, the shaving blade is slid close to the main blade when shaving the combination. There is a limit, so long hairs and curly hairs roughly cut by the shaving blade return to the original posture and orientation again before cutting by the main blade, and the hair of the outer blade of the main blade There is a case where it is difficult to be guided to the introduction hole well, and it is not possible to perform sufficient combination shaving. Also, every time you shave a combination,
You have to slide the shaving blade upward,
There is also annoyance.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem. When a plurality of blades having different driving modes, that is, a rotary blade portion and a reciprocating blade portion are provided side by side, a drive transmission system is mutually formed. An object of the present invention is to provide a rotary electric shaver which does not interfere with each other, has a high degree of freedom in design, and can perform a series of cutting operations for performing a final shaving while performing a rough shaving effectively and easily.

[0008]

A rotary electric shaver according to the present invention comprises a drive chassis 23 having opposed side frames 45 and 46 on the upper part of a main body case 1 and having a motor 35 mounted thereon, and a side frame 45. And the shaving unit 3 disposed between 46. The razor unit 3
A mesh-shaped outer blade 27, a cylindrical inner blade 26 slidably rotating an inner surface thereof around an axis 75, and the outer blade 27.
And a reciprocating inner blade 30 which slides in a straight line reciprocatingly on the inner surface of the second outer blade 31 which is arranged in parallel adjacent to. The rotating inner blade 26 and the reciprocating inner blade 30 which move in such a different manner are driven by one common motor 35. At this time, the rotation of the motor 35 is reduced to reduce the rotation of the rotating inner blade. The first drive transmission means 66 for transmitting to the drive shaft 26 is provided in the drive chassis 23, and the second drive transmission means 68 for converting the rotation of the motor 35 into a linear reciprocating motion and transmitting the same to the reciprocating inner blade 30 is provided in the shaving blade unit 3. .

The razor unit 3 and the drive chassis 23 are integrally combined to form a unitized cutting head 2, and this cutting head 2 is assembled on the upper part of the main body case 1.

The first drive transmitting means 66 drives the rotary inner blade 26 through the inside of one of the side frames 45 and 46 facing each other, and the second drive transmitting means 66 on the other hand.
Of the vibrator 62 having the drive shaft 122
Is disposed in the shaving blade unit 3 and the drive shaft 122
Is connected to the reciprocating inner blade 30.

The razor unit 3 is swingably provided between the side frames 45 and 46 of the drive chassis 23. Specifically, the shaving blade unit 3 is pivotally supported between the side frames 45 and 46 of the drive chassis 23 so as to be swingable about a swing axis P parallel to the axis 75 of the rotary inner blade 26. The first drive transmission means 66 has a final transmission gear G10, and the final transmission gear G10 and an input gear 78 integrated with the shaft 75 of the rotary inner blade 26 mesh with and operate together with the final transmission gear G1.
The axis of zero and the pivot axis P are matched. The second drive transmission means 68 includes an eccentric pin 69 fixed on the output shaft 37 of the motor 35 and a movable comb blade 30 provided in the shaving blade unit 3 for changing the rotation of the eccentric pin 69 into a linear reciprocating motion. A groove 120 is provided on the lower surface of the vibrator 62 in parallel with the swinging direction of the shaving blade unit 3, and the eccentric pin 69 is engaged with the groove 120.

[0012]

The rotary blade portion composed of the outer blade 27 and the rotating inner blade 26 and the reciprocating blade portion composed of the second outer blade 31 and the reciprocating inner blade 30 are arranged adjacent to each other in parallel. ,
An electric razor having the advantages of both blades can be provided.

The rotating inner blades 26 arranged adjacent to each other in parallel with each other.
Although the reciprocating inner blade 30 and the reciprocating inner blade 30 perform different driving operations of rotation and reciprocating linear motion, respectively, one motor 35 is shared, and the output can be branched and driven. At this time, the drive transmission means 66 of the rotary inner blade 26 is attached to the drive chassis 23 by the drive transmission means 68 of the reciprocating inner blade 30.
Are provided separately for the razor unit 3. Therefore, even though the rotary inner blade 26 and the reciprocating inner blade 30 are arranged adjacent to each other, the two drive transmission means 66 and 68 are completely separated and independent, and there is no possibility of interference with each other. The transmission operates smoothly. That is, the two drive transmission means 66 and 68 are configured to transmit different operations, and in particular, the high-speed vibration of the second drive transmission means 68 which transmits the reciprocating linear motion is transmitted by the gear transmission which needs to mesh and rotate accurately. An adverse effect on the meshing state of the first drive transmission means 66 on the rotary blade portion side as a mechanism is prevented. Also, a shaving blade unit 3 on which both blades are actually arranged.
In addition, it is not necessary to increase the size of the razor blade unit 3 as compared with the case where both the drive transmission means 66 and 68 are arranged in a concentrated manner. In such a case, the mechanism can be simplified, the degree of freedom of design can be improved, and the assemblability can be improved.

Since the rotating inner blade 26 can be decelerated through the drive transmission means 66, the speed of the rotating inner blade 26 and the speed of the movable comb blade 30 can be made different, and the rotating inner blade 26 can be decelerated. The blade 26 can be set to an optimum rotation speed suitable for it, and the movable comb blade 30 emphasizing the rotation speed (frequency) can be set to an optimum speed suitable for it.

Each of the drive transmission means 66 and 68 of the rotary inner blade 26 and the reciprocating inner blade 30 which are branched from the output shaft 37 of the common motor 35 has a beard once on the rotary inner blade 26 and the reciprocating inner blade 30. Even if an excessive load is applied at the same time due to a large amount of load being introduced into the motor 35, the load is distributed to the motor 35 side with a time lag, so that the overload on the motor 35 can be reduced.

When the shaving blade unit 3 is provided between the side frames 45 and 46 of the drive chassis 23 so as to be swingable, the shaving blade unit 3 can easily follow the unevenness of the face, the lower part of the chin, etc., so that the final shaving is performed while rough shaving. can do.

When the second outer blade 31 and the reciprocating inner blade 30 are fixed / movable comb blades, respectively, the fixed / movable comb blades 31 and 30 for rough shaving and the outer blade 27 for finish shaving are used. The rotating inner blade 27 is integrally combined so as to be in a predetermined adjacent arrangement state on the shaving blade unit 3, and since the adjacent arrangement state is always constant, the beard, especially long hair (unshaved hair) For kinks, fixed comb blade 31 and movable comb blade 3
After the rough shave at 0, the shave is immediately introduced into the outer blade 27 and is finally shaved by the rotary inner blade 26.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

(Overall Structure) As shown in FIGS. 1 to 3, this electric razor has a cutting head 2 mounted on an upper part of a main body case 1, and the cutting head 2 has a razor unit 3.

(Body Case) In FIGS. 1 to 3,
The main body case 1 is a front and rear case 1F
1B, and side covers 1L and 1R fitted to close the opening 4 formed between the left and right butting surfaces of the front and rear cases 1F and 1B. Electrical components such as a circuit board 5 and a battery 6 are incorporated in the main body case 1, and a charging plug 7 is provided at a lower end portion of the main body case 1. On the front surface of the front case 1F, a start / stop switch knob 9 is provided so as to be slidable up and down, and an indicator 10 for displaying a charge state is provided, and the decorative panel 11 exposes the switch knob 9 and the indicator 10. It is polymerized and fixed. Also,
As shown in FIG. 6, a shaving unit 12 and an operation knob 13 for swinging and retracting the shaving unit 12 are provided at an upper portion of a rear surface of the main body case 1.

(Head Guide Tube) As shown in FIGS. 7 to 9, a head guide tube 14 for vertically holding the cutting head 2 is mounted in the upper end opening of the main body case 1. The head guide tube portion 14 is attached to the main body case 1.
Is formed in a bottomed cylindrical shape having a peripheral wall 15 having a shape along the inner periphery of the upper end opening and a cylindrical bottom wall 16 having an opening 16a in the center, and mounting pieces 17 are integrally formed on the left and right front ends of the cylindrical bottom wall 16. Form. On the other hand, the mounting piece 17 is provided on the inner surface of the upper end of the front case 1F.
Left and right bosses 1 for integrally connecting
9 is protruded.

(Cuting Head / Shaving Blade Unit) As shown in FIGS. 7 and 23, the cutting head 2 includes a drive chassis 23 which is fitted inside the head guide tube portion 14 so as to be vertically movable.
A combination with the shaving blade unit 3 mounted on the drive chassis 23 is provided. The shaving blade unit 3 includes a base 24 supported on the driving chassis 23 so as to be swingable back and forth, an inner blade holder 25 detachably mounted on the base 24,
A cylindrical rotary inner blade 26 held by the inner blade holder 25, an outer blade 27 and an outer blade holder 29 thereof,
It comprises a movable comb blade 30 as a reciprocating inner blade and a fixed comb blade 31 as a second outer blade.

(Driving Chassis) As shown in FIG. 10, the driving chassis 23 is integrally connected to a lower chassis 23D fitted inside the head guide tube portion 14 so as to be vertically movable, and an upper portion of the lower chassis 23D. Upper chassis 23U
Consists of As shown in FIG. 11, the lower chassis 23 </ b> D has a peripheral wall 32 fitted inside the head guide tube part 14 and a chassis bottom wall 33, and a vertical motor 35 is inserted into a central opening 34 of the chassis bottom wall 33. The output shaft 37 at the upper end of the motor 35 is protruded upward from the opening 34 by being attached in a hanging state with screws 36 (see FIG. 6).

At the time of assembly, for example, the head guide tube portion 14 is attached to the upper end of the main body case 1 in advance, while the shaving blade unit including the drive chassis 23, the base 24, the inner blade holder 25 and the outer blade holder 29, etc. The cutting head 2 is assembled by assembling the cutting heads 2 with each other.

That is, as shown in FIGS. 7 and 8, the front side of the peripheral wall 15 of the head guide tubular portion 14 is placed on the front case 1F.
The mounting piece 17 and the boss 19 are superimposed on the inner surface of the upper end of the mounting piece 17 in close contact with each other, and the set screw 20 is inserted into the hole 1 of the mounting piece 17.
The head guide cylinder 14 and the front case 1F are integrally connected by screwing the head guide cylinder 14 from the boss 19 from 7a. Next, the rear case 1B is abutted against the front case 1F, and the inner surface of the upper end of the rear case 1B is superimposed on the rear surface side of the peripheral wall 15 of the head guide tube portion 14 in an intimate manner to integrally connect the front and rear cases 1F and 1B. I do. At this time, the upper end of the peripheral wall 15 of the head guide cylindrical portion 14 is
1B so as to protrude slightly upward from each upper edge.

Next, the pre-assembled cutting head 2
The lower chassis 23D is fitted inside the head guide tube 14 from above, and the motor 35 projects downward from the opening 16a of the tube bottom wall 16 of the head guide tube 14. At this time, as shown in FIG. 5, the lower chassis 23 </ b> D engages left and right hook-shaped retaining claws 39 projecting downward from the chassis bottom wall 33 with the opening 1 of the cylinder bottom wall 16 of the head guide cylinder 14.
6a, and is engaged with the edge 16b of the opening 16a in an upward retaining shape. Further, a boss 40 provided on the lower surface of the chassis bottom wall 16 and a spring receiver 41 on the inner bottom of the head guide cylinder 14 are provided.
And a push-up spring member 42 is interposed therebetween. As a result, the entire cutting head 2 including the motor 35 is
2, it is constantly urged upward and is elastically supported so as to be vertically movable by a predetermined stroke.

As another assembling procedure, as shown in FIG. 40, the head guide tube portion 14 is externally fitted to the lower chassis 23D of the cutting head 2, and then the head guide tube portion 14
Is attached to the inner surface of the upper end of the front case 1F with the set screw 20.
Finally, it is conceivable to cover the front case 1F with the rear case 1B and integrally combine them.

As shown in FIG. 10, the upper chassis 23U has a bottom frame 4 having an arcuate concave surface 43 formed on the upper surface.
4 and a pair of left and right side frames 45 and 46 are erected from the left and right ends of the bottom frame 44 so as to face each other. In the upper chassis 23U, a boss (not shown) protruding from the lower surface of the bottom frame 44 is fitted to a boss 49 provided on the upper surface of the chassis bottom wall 33 of the lower chassis 23D. Boss 4 on lower chassis 23D side
9 is screw-connected to the lower chassis 23D so as to form a certain space therebetween. As shown in FIG.
The base 24 is pivotably supported between the pivots 6 around the pivot axis P.

(Base) As shown in FIGS. 12 to 15, the base 24 is formed in a shallow box-like shape which is closed by fitting the upper cover plate 52 therein, and has angled bracket portions 53 and 54 from the left and right. Is established. Left and right bracket parts 5
A hollow support shaft portion 55 protrudes outward from each of the upper ends of the shafts 3 and 54, and the both support shaft portions 55 are inserted into shaft holes 56 opened at the upper ends of the side frames 45 and 46 of the drive chassis 23. Thus, the base 24 is pivotally connected to the drive chassis 23 so as to be able to swing back and forth. At this time, a pair of upper and lower engaging projections 57 are provided on the outer periphery of the support shaft portion 55, and a pair of front and rear notches 59 are provided on the inner periphery of the shaft hole 56, and the base 24 is temporarily turned to the horizontal position to temporarily support the support shaft portion 55. Notch 59 of shaft hole 56
Pass in a state that matches with. After that, the base 24 is 90
By rotating the shaft 55 degrees, the engagement protrusion 57 is engaged with the shaft hole 56, and by this engagement, the support shaft portion 55 is prevented from coming out of the shaft hole 56 without using a special screw or the like for pivoting. Easy and reliable pivotal connection. The base 24 has a convex circular surface 6 corresponding to the circular concave surface 43 of the drive chassis 23.
1 is formed. A slight gap is formed between the convex arc surface 61 of the base 24 and the arc concave surface 43 of the drive chassis 23 to reduce the swing resistance of the base 24.
As described later, the reciprocating inner blade 30 is provided inside the base 24.
The drive system vibrator 62 and the engagement lock mechanism 63 (see FIG. 14) for the outer blade holder 29 are incorporated.

(Rotating inner blade drive system) In FIG. 10, caps 64 and 65 are fitted and fixed to the outside of each side frame 45 and 46 of the drive chassis 23. Form a space between the left side frame 45 and the cap 64,
A first drive transmission means 66 for reducing the rotation of the motor 35 and transmitting the rotation to the rotation inner blade 26 of the shaving blade unit 3 over the inside of this space and the inside space between the upper chassis 23U and the lower chassis 23D is provided. Be equipped.

FIG. 5 and FIG.
6 is shown. The drive transmission means 66 includes a first transmission gear G1 fixed to the output shaft 37 of the motor 35, a second transmission gear G2 meshing with the first transmission gear G1, a third transmission gear G3 integrally connected to the second transmission gear G2, The fourth transmission gear G4 that meshes with the third transmission gear G3, the fifth transmission gear G5 that is a face gear integrally formed on the upper surface of the fourth transmission gear G4, and the sixth transmission gear that meshes orthogonally with the fifth transmission gear G5. G6, 6th
A seventh transmission gear G7 integrally connected to the transmission gear G6;
An eighth transmission gear G8 meshing with the transmission gear G7, a ninth transmission gear G9 meshing with the eighth transmission gear G8, and a ninth transmission gear G9
And a final transmission gear G10 fixed in parallel on the coaxial 67
It is composed of The shaft 67 having the final transmission gear G10 and the ninth transmission gear G9 fixed to both ends serves as the pivot axis P of the shaving blade unit 3, which is passed through the center hole of the support shaft portion 55 of the base 51. . The motor 35 is used not only as a drive source for the rotary inner blade 26 but also as a drive source for the movable comb blade 30 and the shaving unit 12. At that time, the eccentric pin 69 is fixed above the first transmission gear G1 on the output shaft 37 of the motor 35,
This output is transmitted to the movable comb blade 30 via the second drive transmission means 68 as described later. Further, an eccentric cam 70 is fixed below the first transmission gear G1 on the output shaft 37 of the motor 35, and the output of the eccentric cam 70 is set to a third
Is transmitted to the shaving unit 12 via the drive transmission means 198.

(Shaving Blade Unit) As shown in FIG. 23, the shaving blade unit 3 swings the swingable base 24 and a pair of front and rear cylindrical inner rotating blades 26 for finishing shaving. Inner blade holder 25 supported in parallel with the dynamic axis P in parallel
An outer blade holder 29 in which two front and rear outer blades 27 formed in a mesh shape are stretched in an arch shape; and a front and rear outer blade 27.
A movable comb blade 30 and a fixed comb blade 31 for rough shave, which are arranged in parallel between and adjacent to each other. In this way, the front and rear outer blades 27 and the rotating inner blades 26
By forming a three-blade structure with the fixed comb blade 31 and the movable comb blade 30 arranged adjacently in the middle, it is possible to perform early shaving and deep shaving, and also to fix particularly combed hair and long hair (unshaved hair). The finishing shave can be performed by the outer blade 27 and the rotating inner blade 26 while the rough shave is performed by the comb blade 31 and the movable comb blade 30. At this time, the shaving blade unit 3 is moved to the final transmission gear G1.
By swinging around the zero axis P as a center, the shaving blade unit 3 can easily follow a part that is difficult to shave, such as unevenness of the face or a lower chin.

(Inner Blade Holder) As shown in FIGS. 18 and 19, the inner blade holder 25 has side walls 73 and 74 standing upright from left and right ends of a holder bottom wall 72 forming a flat lint receiving surface 71. Between the side walls 73 and 74.
6 and 26 are supported in parallel via bearings M and M, and a space is formed between the rotary inner blades 26 and 26 and the lint receiving surface 71 such that a cleaning brush can be inserted from the front and rear. Further, an input gear 78 integrated with a left end of each rotary inner blade 26 via a shaft 75 is provided so as to be located outside the left side wall 73. A cover body 76 is provided outside each of the side walls 73 and 74.
An opening 79 for exposing a part of the input gears 78 facing each other is provided on the left cover body 76.
Is formed. By exposing the opposing portions of the input gears 78 in this manner, the exposed portions of the input gears 78 are moved to the final transmission gear G10 with the mounting of the inner cutter holder 25 to the base 24. Can be easily engaged with each other.

In FIGS. 16 and 19, a pair of front and rear L-shaped engagement members which can be engaged with the bracket portion 54 on the right side of the base 24 from above are provided on the outer surface of the right side wall 74 of the inner blade holder 25 from above. Forming ribs 90 and 91 are formed. Further, the cover body 7 fitted to the left and right side walls 73 and 74 is provided.
The inner wall surfaces of the openings 79 of the 6.77 also fit along the side surfaces of the left and right bracket portions 53 and 54 as guide portions when the inner blade holder 25 is mounted on the base 24. The engagement ribs 90 and 91 are engaged with the right bracket 54 and the cover 7 is attached to the side surfaces of the left and right brackets 53 and 54.
The state in which the inner blade holder 25 is positioned with respect to the base 24 by fitting the openings 79
That is, the shaft center of each rotary inner blade 26 is assembled in a state where it is located at a fixed distance from the swing shaft center P which is the shaft center of the final transmission gear G10.

As shown in FIGS. 19 and 20, a pair of front and rear resilient engagement arms 92 are formed on the outer surfaces of the left and right side walls 73 and 74 of the inner blade holder 25 so as to hang down. A hook 92 a is provided at a lower end of the 92. As shown in FIG. 16 and FIG. 22, when the inner blade holder 25 is pushed into the base 24 from above,
A concave portion 93 provided on each inner surface of the left and right side walls 53 and 54 of the base 24 through elastic deformation of the hook portion 92a of the engagement arm 92.
Engages releasably. The engagement state is set such that the engagement arm 92 is pulled out of the concave portion 93 through the elastic deformation by the operating force of grasping the inner blade holder 25 and strongly pulling it upward. Therefore, the rotary inner blade 26
The inner blade holder 25 can be easily removed at the time of replacement.

(Outer blade holder) As shown in FIGS. 26 and 27, the outer blade holder 29 is formed in a hollow shape having front and rear wall portions 94 and 95 and left and right side walls 96 and 97.・ 97 is the inner / outer double wall 96a ・ 96b ・
97a and 97b. A pair of front and rear first notches 99 is formed in each of the inner walls 96a and 97a, and the first notch 99 fits the outer cutter holder 29 into the inner cutter holder 25 and the base 24 from above. At this time, the inner walls 96a and 97a are
It is provided in order to avoid contact interference with the vehicle. Each outer wall 9
6b and 97b are formed with second notches 100 that fit into the brackets 53 and 54 of the base 24 when the outer blade holder 29 is fitted.

Pins 103 for caulking and welding the front and rear end pieces 101 and 102 for extending the outer blade shown in FIG. 25 are provided on the inner surfaces of the front and rear wall portions 94 and 95 of the outer blade holder 29. Each inner wall 96a in the left and right side walls 96 and 97
A longitudinal groove 105 that engages and supports a central end piece 104 for extending the outer blade from the left and right at an intermediate portion between the front and rear of the inner surface of 97a.
Is formed. Each end piece 101, 102, 104
Is formed of plastic. As shown in FIGS. 27 and 32, one end of each outer blade 27 on the upper side in the rotation direction of the inner blade protrudes from the central end piece 104 and the front end piece 101, respectively. Fixed pin 104a ・ 1
It is fixed by swaging and welding to 01a. The other ends of the outer blades 27 on the lower side in the direction of rotation of the inner blade are elastic arms 102b and 104b integrally formed with the rear end piece 102 and the central end piece 104 so as to be vertically elastically displaceable.
Auxiliary spring 2 is attached to movable pins 102c and 104c projecting from
It is attached in a pulled state by being swaged and welded through 05.

As described above, one end of each outer blade 27 on the upper side in the rotation direction of the inner blade is fixed, and the other end on the lower side in the rotation direction of the inner blade is pulled. Is pulled toward the lower side in the inner blade rotation direction due to the sliding contact resistance of
The loosening of the outer blade 27 on the lower side in the rotation direction is suppressed well, and the rotating inner blade 2 of the outer blade 27 is always prevented.
6, and the sharpness can be improved. In addition, a comb 2 for introducing a beard onto the rear outer blade 27 on the outer surface of the rear wall portion 95 of the outer blade holder 29 while raising the beard.
04 is formed.

(Fixed / movable comb blade) Front and rear outer blades 27.2
7 above the central end piece 104 between
0 and the fixed comb blade 31 are assembled. These comb blades 30 and 31 are shown in FIGS. The movable comb blade 30 is formed in a U-shape in cross section, and the front and rear blade plates 106.1
The comb-like blade 109 and the slit 108 are alternately arranged in the left-right direction at the upper end of the joint 07. This movable comb blade 30
In the center between the front and rear blade plates 106 and 107, a spring member 110 such as a leaf spring is held at an upper end, and a bifurcated portion 111 is
The drive piece 111 having a is pin-connected. On the other hand,
The fixed comb blade 31 is formed in a U-shaped cross section corresponding to the movable comb blade 30, and the left and right comb blades 114 and the slit 118 are arranged in two front and rear rows at the upper end of the connection between the front and rear blade plates 112 and 113. They are arranged alternately in the direction. This fixed comb blade 31
The movable comb blade 30 is fitted together with the spring member 110 and the drive piece 111 between the front and rear blade plates 112 and 113, and then the left and right freedom of the spring member 110 is set between the front and rear blade plates 112 and 113 of the fixed comb blade 31. The outer blade piece 115 that receives the end is pin-connected. The comb blade 109 of the movable comb blade 30 comes into close contact with the inner surface of the comb blade 114 of the fixed comb blade 31 by the spring action of the spring member 110.

As shown in FIG. 26, the movable comb blade 30 and the fixed comb blade 31 which have been combined in advance as described above are combined with the outer blade piece 1 protruding from the left and right ends of the fixed comb blade 31.
Fifteen projections 115a are attached to the left and right inner walls 9 of the outer blade holder 29.
By being vertically movably engaged with and supported by a vertically elongated groove 116 provided above the vertically elongated groove 105 on the inner surface of 6a / 97a, it is assembled on the central end piece 104. At this time, a spring member 117 is interposed between the left and right outer blade pieces 115 and the central end piece 104, and the movable comb blade 30 is constantly urged up together with the fixed comb blade 31 by the spring action of the spring member 117. . Thus, the fixed comb blade 31 gently follows the skin.

(Reciprocating Inner Blade Drive System) Next, FIGS.
The second drive transmitting means 68 for driving the movable comb blade 30 based on the fourth embodiment will be described. The vibrator 62 for converting the rotation of the eccentric pin 69 of the output shaft 37 of the motor 35 into a movable reciprocating motion of the comb blade 30 is built in the base 24. The vibrator 62 is a plastic molded product as a whole, and includes a vibrator body 121 having a groove 120 formed on the lower surface in the front-rear direction, a drive shaft 122 projecting upward from the center of the upper surface of the vibrator body 121, It has a thin portion 123 integrally formed on the left and right ends of the main body 121. The vibrator 62 is provided with a hole 123b at an end 123a of the left and right thin portions 123, and the hole 123b is press-fitted into a pin 241 protruding from the inner surface of the base 24. At this time, the vibrator 6
The second drive shaft 122 passes through the central opening 52a of the upper lid plate 52 for closing the base 24, and then passes through the central opening 72a of the holder bottom wall 72 of the inner blade holder 25, and then moves upward. To protrude. The protruding upper end of the drive shaft 122 passes through a notch 104a provided in the central end piece 104 as shown in FIG. 6, and then engages with the forked portion 111a of the drive piece 111 of the movable comb blade 30. The eccentric pin 69 is engaged with the groove 120 on the lower surface of the vibrator main body 121. The gap between the central opening 52 a of the upper lid plate 52 and the drive shaft 122 is closed by a flexible bristle cover 124.

At that time, by driving the motor 35,
The vibrator 62 linearly reciprocates right and left through engagement with the eccentric pin 69, and the movable comb blade 30 slides on the inner surface of the fixed comb blade 31 in the left and right direction. As described above, the drive transmission mechanism 68 of the movable comb blade 30 drives the vibrator 62 directly by the eccentric pin 69, whereas the rotary inner blade 26 can be arbitrarily decelerated via the drive transmission means 66. is there. Therefore,
Even when the common motor 35 is used as a drive source, the movable comb blade 30
And the rotary inner blade 26 can be driven at optimum speeds. For example, the movable comb blade 30 has a rotation speed (frequency) of 7000 to 8000 rpm due to its importance.
The rotation inner blade 26 is set at 3000 to 4000 rpm, which is slower than that when the rotation torque is regarded as important.

(Engagement Lock Mechanism of Outer Blade Holder) The structure of the engagement lock mechanism 63 of the outer blade holder 29 is shown in FIGS. A detaching plate 125 is assembled inside the base 24 so as to be located below the vibrator 62.
The removal plate 125 is a plastic molded product as a whole, and includes left and right side plate portions 127 having a pair of front and rear locking claws 126.
129, and a frame plate portion 130 for integrally connecting the left and right side plate portions 127. Right side plate part 129
A pressing projection 131 is provided between the front and rear locking claws 126 on the outer surface of the projection. The frame plate 130 is provided with the vibrator 6.
2 for avoiding interference with the lower central protrusion 62a.
32 and a front and rear frame portion 133.
4 and left and right frame portions 135 and 136. Right side plate 12
The right frame portion 136 rigidly connected to the frame 9 is formed in a thick plate shape wide in front and rear. A pair of front and rear curved portions 139a and 139b connected to the front and rear frame portions 133 and 134 via a thin portion 137 are provided on a left frame portion 135 that is integrally continuous with the left side plate portion 127.
Is formed. The curved part 1
An intermediate portion between 39a and 139b and a central portion in the front-rear direction of the left side plate portion 127 are connected by a rod portion 140. Curved part 139a
139b connecting portion 139c with 139b rod-shaped portion 140
d is also formed to be thin. Rod 140 and right frame 13
6, a spring mounting groove 144 is recessed in each lower surface.

The detaching plate 125 is mounted inside the base 24 so as to be slidable in the left-right direction.
4, the front ends of the right and left brackets 53 and 54 are respectively inserted into openings 141 provided at the front and rear portions of the right and left brackets 53 and 54 through locking pawls 126. The front and rear ribs 1 project through the opening 142 provided in the
43 and 143, the curved portion 139a
139b is brought into contact. Rod 140 and right frame 13
6, between a spring mounting groove 144 provided on each lower surface and a spring receiving protrusion 145 protruding from the left and right of the inner bottom surface of the base 24.
The return spring member 146 is interposed. With the pair of left and right return spring members 146, the removal plate 125 is always connected to the left and right locking claws 1.
26 is pressed and urged to project from each opening 141.

As shown in FIG. 23, the opening 14 of the base 24 is
The protruding ends of the locking claws 126 protruding from the outer blade holder 29 are engaged with engagement recesses 147 formed in the lower inner surfaces of the left and right outer walls 96b and 97b of the outer blade holder 29. It is mounted and fixed at a predetermined position with respect to the base 24. Now, when the pressing projection 131 is pressed inward (leftward) of the base 24, the removal plate 125 is moved to the front and rear wall portions 242 of the base 24.
・ Sliding to the left under the guidance of 243, the locking claws 126 on both sides of the pressing projection 131 retreat inside the base 24, and at the same time, are pushed by the front and rear frame parts 133 and 134 to form a double crest. Part 1
While the curved portions 139a and 139b of 39 are pressed against the rib 143, the thin portion 137 and the thin connecting portion 139 are formed.
elastically deformed at c · 139d (two-dot chain line in FIG. 33),
With this elastic deformation, the rod-shaped portion 140 is pulled into the base 24 together with the left side plate portion 127 and the locking claw 126. As a result, the engagement lock of the outer blade holder 29 is released.

The lock release button 149 for externally operating the pressing projection 131 of the detaching plate 125 is shown in FIGS.
As shown in FIG. 7, the lock release button 149 is inserted into the through holes 150 and 151 formed in the cap 65 and the right side frame 46, and the inner end of the lock release button 149 is
1 and are arranged opposite to each other. Therefore, the lock release button 1
By pushing the 49 in, the removal plate 125 is pressed and displaced in the unlocking direction against the return spring member 146 as described above. When the outer blade holder 29 is mounted, the engagement lock mechanism 63 is automatically locked simply by pushing the outer blade holder 29 into the base 24 from above.

(Safety switch mechanism) FIGS. 34 to 37
7 shows a safety switch mechanism in which when the outer blade holder 29 is removed, the start / stop switch knob 9 is mechanically locked at the stop position (switch-off position) to prevent unexpected rotation of the inner blade 26. This safety switch mechanism incorporates a first piece 155, a second piece 159, and a third piece 160 between the switch knob 9 and the right side wall 97 of the outer blade holder 29. As shown in FIGS. 8 and 34, the switch knob 9 is integrally connected to a moderating plate 157 disposed along the inner surface of the front case 1F, and the moderating plate 157 has an electrically conductive leaf spring on the inner surface. A piece 158 and a pair of elastic arms 220 are provided. As the switch knob 9 is moved up and down between the stop position (switch-off position) and the start position (switch-on position), the operating piece 158 of the moderation plate 157
Opens and closes the terminals of the drive circuit on the circuit board 5, and the elastic arm 220 is disengaged from the moderation protrusion 221 provided on the inner surface side of the front case 1F, and the switch knob 9 is turned off or on by the engagement. Stopped and held.

The first piece 155 has a holder receiving portion 155a at the upper end thereof and a convex arc-shaped pressing portion 155b drawn about the swing axis P of the base 24 at the lower end thereof, and has an inner surface. A retaining claw 155c is protruded. The first piece 155 engages the retaining claw 155c with a vertically elongated slit 222 provided on the outer surface of the bracket portion 54 of the base 24 as shown in FIGS. The push-up spring member 156 is attached so as to be able to freely move up and down on the outer surface of the push-up spring 54. In the middle of the first piece 155 in the up-down direction, an arc-shaped hole 223 drawn around the swing axis P of the base 24 is provided, and the hole of the lock release button 149 is passed through the hole 223 through the hole. The interference with the button 149 is avoided. Further, the first piece 155 has the hole 22.
A vertically elongated hole 206 is also provided in the upper part of the third member 3 to prevent interference with the piece 175 through a piece 175 described later.

A pressing portion 155b of the first piece 155,
The second piece 159 and the third piece 160 are incorporated between the moderation plate 157 and the restricted portion 157a provided at the upper end. The second piece 159 has a plate 161, and a receiving pin 162 is provided at one end of the upper surface of the plate 161 in the left-right direction.
Are projected upward, and two slide pins 163 and 164 are projected downward at both left and right ends of the lower surface of the plate 161. The slide pins 163 and 164 are moved downward so that the receiving pin 162 passes through the hole 152 formed in the bottom chassis 44 of the upper chassis 23U and is located below the holding portion 155b of the first piece 155. Guide holes 224 provided in the chassis bottom wall 33 of the chassis 23D.
224. A push-up spring member 165 externally fitted to each of the pins 163 and 164 is interposed between the plate 161 and the chassis bottom wall 33. Thus, the second piece 159 is mounted on the lower chassis 23D so as to be vertically movable in parallel and constantly urged upward by the push-up spring member 165.

The third piece 160 has a swing shaft 166 having a piece receiving portion 167 and an action portion 168 orthogonal to each other. The third piece 160 supports both ends of the swing shaft portion 166 on bearings 169 provided on the chassis bottom wall 33 of the lower chassis 23D so as to be swingable back and forth.
66 always receives the piece receiving portion 1
The tip of 67 abuts on the lower surface of the plate 161 of the second piece 159, and oscillates so that the tip of the action portion 168 is located at the lock position just above the regulated portion 157a.

In this case, when the outer blade holder 29 is mounted, the holding portion 100a provided in the second notch 100 of the outer wall 97b of the right side wall 97 contacts and presses the holder receiving portion 155a of the first piece 155. By this contact pressing action, the first piece 155 is pushed down against the elasticity of the push-up spring member 156. As the first piece 155 descends, the holding portion 15
5b presses the receiving pin 162, so that the second piece 1
59 is pushed down against the push-up spring member 165 in the horizontal posture, and pushes down the piece receiving portion 167 of the third piece 160. As a result, the third piece 160 swings around the swing shaft portion 166 and retreats the action portion 163 from above the restricted portion 157a of the detent plate 157 to move to the unlock position.
Therefore, the switch knob 9 can be slid upward to the ON position. That is, when the outer blade holder 29 is mounted, the motor 35 can be started. At this time, since the pressing portion 155b of the first piece 155 is formed in a convex arc shape centered on the pivot axis P, the first portion 155b is always in the first pivot position regardless of the pivot angle of the shaving unit 3. Peace 159 is second
The receiving pin 162 of the piece 159 is kept pressed, and the slide operation of the switch knob 9 is made freely.

When the outer blade holder 29 is removed, the first piece 155 is automatically raised by the elastic return force of the push-up spring member 156, and the second piece 159 is automatically raised by the elastic return force of the push-up spring member 165. At the same time, the third piece 160 swings in the opposite direction due to the elastic return force of the spring member 170, and the swing returns the action portion 168 to the locked position just above the regulated portion 157a. Therefore, at this time, since the switch knob 9 cannot be slid upward to the ON position, the motor 35 cannot be started and the outer blade holder 2 is not operated.
It is also safe to remove the rotary blade 9 to clean the rotary inner blade 26 or to replace the rotary inner blade 26 with the inner blade holder 25.

(Neutral Return Mechanism) The cutting head 2 has a mechanism for urging the cutting head 2 to always return to the neutral position when not in use. As shown in FIGS. 12 and 38, this mechanism removes the coil portion 172a of the torsion coil type return spring 172 from the boss 171 provided around the shaft hole 56 on the outer surface of the side frame 46 of the drive chassis 23. An arc hole opened below the pin 173 by inserting and fitting two legs 172b extending from both ends of the coil portion 172a between a pair of pins 173 provided below the boss 171. 174. On the other hand, a pin 175 is attached to the outer surface of the bracket portion 54 of the base 24, and this pin 17
5 into the arc hole 174, and the groove 175a of this pin 175
, The lower end of the foot portion 172b of the return spring 172 is engaged. Thus, the shaving blade unit 3 swings back and forth in response to the skin pressure against the elasticity of the return spring 172, but returns to the neutral position due to the elasticity of the return spring 172 when released from the skin pressure. . In particular, when the shaving blade unit 3 swings back and forth due to the pressing of the skin, the elastic restoring force of the return spring 172 acts on the shaving blade unit 3, so that the shaving blade unit 3 is always in close contact with the skin. Biased in the direction.

(Head lock mechanism) When shaving under the nose or the like, it is easier to use the razor blade unit 3 so as not to swing, so that the head for fixing and using the razor unit 3 is used. Equipped with a lock mechanism. This head lock mechanism is realized in combination with the neutral return mechanism. A head lock pin 176 is provided on the right side of the main body case 1 so as to be slidable up and down.
With a notch 177 provided on the lower surface of the base 24 at the neutral position.
, The razor blade unit 3 is held at the neutral position.

(Fluff Intrusion Prevention Mechanism) When lint is scattered to the outside from the outer blade 27 or the fixed comb blade 31, there is a possibility that the lint may enter the main body case 1, so that the lint is more completely prevented. A lint-free lint prevention mechanism is provided.
As shown in FIG. 6, an apron 179 is provided on a step 230 formed along the lower front surface of the cutting head 2, specifically, along the upper front edge of the upper chassis 23 </ b> U. And the lower end thereof is attached to the peripheral wall 1 of the head guide tubular portion 14.
5 so as to cover the front surface. This prevents the lint flying outside from the outer blade 27 and the fixed comb blade from entering between the mating surfaces of the head guide cylinder 14 and the drive chassis 23. Also, as shown in FIG. 5, caps 64 and 65 attached to the left and right of the cutting head 2
By extending the lower end thereof until it covers the outer surface of the peripheral wall 15 of the head guide tube portion 14 projecting upward from the main body case 1, the lint also causes the head guide tube portion 14 and the drive chassis 23 Prevents intrusion between the ground surfaces. The apron 179 can also be used for a nameplate for displaying a product name or the like.

(Shaving unit) In FIGS. 6 and 39, the shaving unit 12 includes a shaving holder 190.
Fixed comb blade 191 fixed to the
The movable comb blade 191 is formed of a movable comb blade 192 that reciprocally slides on the upper surface of the movable comb blade 192 and that transmits an output of the motor to the movable comb blade 192. The shaving unit 12 is supported in a storage posture (solid line state in FIG. 6) along the outer surface of the rear case 1B with its blade edge downward, and a use posture in which the blade edge protrudes rearward (two-dot chain line state in FIG. 6). It is provided rotatably around a shaft 194. The attitude switching operation is performed by the operation knob 13 provided on the outer surface of the rear case 1B so as to be vertically slidable as described above.

As shown in FIG. 6, the operation knob 13 is integrally connected to a shaving lever 197 slidably mounted up and down along the inner surface of the rear case 1B. The shaving lever 197 has a retractable arm 199 at the upper end thereof, and the upper end of the arm 199 is engaged with the shaving holder 190. Now, when the operation knob 13 is slid upward, the razor shaving lever 197 also moves upward, and the razor shaving unit 12 is pushed up by the extension / retreat operating arm 199 to be switched to the protruding posture. When the operation knob 13 is slid downward, the shaving lever 197 is also moved downward, and the shaving unit 12 is pulled down by the retractable operation arm 199 to be switched to the storage position.

The movable comb blade 1 is provided between the shaving unit 12 and the motor 35 by changing the rotation of the motor 35 into a swinging motion.
Third drive transmission means 198 for transmitting the power to the motor 92 is provided. This means, as shown in FIGS. 6 and 39,
A fork part 200 is provided at the tip, and a swing arm 202 having a long through hole 201 in the front-rear direction in the middle. The base end of the swing arm 202 is supported on the lower chassis 23D by a shaft 203 so as to be horizontally swingable, and the through hole 20
Eccentric cam 70 fixed to output shaft 37 of motor 35 within 1
Is fitted. When the shaving unit 12 is in the retracted position, the engagement element 193 releases the engagement with the forked part 200 of the swing arm 202. When the shaving unit 12 is switched to the protruding posture, the engaging element 193 engages with the forked portion 200 of the swing arm 202, and the rotation of the motor 35 is changed into a swing motion and transmitted to the movable comb blade 192. .

Referring to FIGS. 6 to 8, FIG. 10 and FIG. 40, the procedure for assembling the shaving unit 12 and the drive transmitting means 198 thereof will be described. The shaving unit 12 and shaving lever 19 are previously mounted on the rear case 1B.
7, the shaving arm 20 with the shaving parts such as the engaging element 193 incorporated and the cutting head 2 assembled.
2 are passed through an opening 15a formed on the rear surface of the head guide cylinder 14, and cutouts 32a and 23a formed on the rear walls of the lower chassis 23D and the upper chassis 23U on the cutting head 2 side (see FIG. 37). , It is arranged to face the engaging element 193 of the shaving unit 12.

(Other Embodiments) In the above-described embodiment, the front and rear two rotary inner blades 26 are provided as the shaving blade unit 3. A reciprocating inner blade of a well-known reciprocating electric shaver in which a number of semicircular small blades are arranged in parallel, or the movable comb blade 30 may be provided in parallel. Rotating inner blade 2
In the drive transmission means 66 of the sixth embodiment, only the gear transmission is used in the above embodiment, but instead of this, the pulley 210 is fixed to the output shaft 37 of the motor 35 as shown in FIG. A belt transmission in which a pulley 211 is integrally formed on the lower surface of the transmission gear G5, a belt 212 is hung between the pulleys 210 and 211, and the fifth transmission gear G5 to the final transmission gear G10 are configured in the same manner as in the above embodiment. And a combination of gear transmission.

The structure for assembling the cutting head 2 and the main body case 1 with the cutting head 2 may be as shown in FIG. This is the left and right side frames 45 and 46
Is vertically supported by the left and right elastic arms 213 and 213 in the main body case 1, and is constantly pushed upward by the push-up spring member 42. The upper ends of the side frames 45 and 46 are provided on the left and right slits 214 of the upper wall 1U of the main body case 1.
A blade unit 3 which is projected upward from 214, and in which the rotating inner blade 26 and the outer blade 27, the movable comb blade 30 and the fixed comb blade 31 are integrally combined between the upper ends as in the above embodiment. Is mounted swingably. On the drive chassis 23, a motor 35 and a drive transmission unit 66 for the rotary inner blade 26 are mounted. The drive transmitting means 68 of the movable comb blade 30 includes the vibrator 62 on the blade unit 3 side as in the case of the above-described embodiment, while connecting the eccentric pin 69 fixed to the upper end of the output shaft 37 of the motor 35 to the upper wall 1U. , And is engaged with the groove 120 on the lower surface of the vibrator 62.

[0061]

According to the electric shaver of the present invention, the outer blade 2
7 and a rotary blade composed of a rotating inner blade 26, and a reciprocating blade composed of a second outer blade 31 and a reciprocating inner blade 30.
Since they are arranged parallel and adjacent to each other, it is possible to obtain an electric shaver having the advantages of both blades.

In addition to being able to drive the rotary inner blade 26 and the reciprocating inner blade 30 by using a single motor 35, the drive transmitting means 66 of the rotary inner blade 26 is connected to the drive chassis 23 by the reciprocating inner blade 30.
Are transmitted separately to the shaving blade unit 3. Therefore, even though the rotary inner blade 26 and the reciprocating inner blade 30 are arranged adjacent to each other, there is no possibility that the two drive transmission means 66 and 68 interfere with each other, and each of them can smoothly transmit and actually operate. The size of the shaving blade unit 3 can be reduced as compared with a configuration in which both the drive transmission means 66 and 68 are provided in a concentrated manner on the shaving blade unit 3 on which both the rotating inner blade 26 and the reciprocating inner blade 30 are arranged. In addition, the degree of freedom of design is effective, and the assembly can be performed rationally.

Although the rotating inner blade 26 and the reciprocating inner blade 30 are driven by using one motor 35 in common, the rotation speed of the rotating inner blade 26 and the speed of the reciprocating inner blade 30 are reduced. Any difference can be provided and each can be driven to an appropriate speed. Furthermore, even if a large amount of beard is introduced into the rotary inner blade 26 and the reciprocating inner blade 30 at a time and an excessive load is applied at the same time, the load is transmitted to the motor 35 with a time lag. Thus, the overload on the motor 35 can be reduced, and the durability can be improved.

The drive transmission means 66 of the rotary inner blade 26 is not provided on the shaving blade unit 3 for directly shaving, but on the drive chassis 23 side. It is possible to simplify measures for preventing intrusion of waste.

The shaving blade unit 3 and the drive chassis 23 are integrally combined to form a unitized cutting head 2 and the cutting head 2 is mounted on the upper part of the main body case 1, so that the assembling work can be rationalized. Can be.

The razor unit 3 is provided between the side frames 45 and 46 of the drive chassis 23 so as to be swingable, so that the razor unit 3 can easily follow the unevenness of the face and the lower part of the chin. can do.

The second outer blade and the reciprocating inner blade are fixed to each other.
In addition to the movable comb blade, the fixed comb blade 31 and the movable comb blade 30 for rough shaving, and the outer blade 27 and the rotating inner blade 26 for finish shaving are integrally formed so as to be always in a predetermined adjacent arrangement state. It is combined into a unit. Therefore, even after long hairs and curly hairs are roughly shaved by the fixed comb blade 31 and the movable comb blade 30, they are surely introduced into the outer blade 27 immediately, and
6, the final shaving is performed, and a series of rough shaving and final shaving can be effectively performed. In addition, the shaving is performed in combination with the conventional sharp shaving blade, but rough shaving and finishing shaving can be easily performed without troublesomeness, and the operability is excellent.

[Brief description of the drawings]

FIG. 1 is an overall front view of an electric shaver according to the present invention.

FIG. 2 is an overall side view.

FIG. 3 is an overall exploded perspective view.

FIG. 4 is a vertical sectional front view of a cutting head unit.

FIG. 5 is a vertical sectional front view of a cutting head portion in a state where an outer blade holder is removed.

FIG. 6 is a vertical sectional side view of a cutting head unit.

FIG. 7 is a perspective view showing a cutting head portion and an upper portion of a main body case in a separated state.

FIG. 8 is a perspective view showing the upper end of the front case and the head guide cylinder in a separated state.

FIG. 9 is a perspective view of a head guide cylinder.

FIG. 10 is an exploded perspective view of a drive chassis.

FIG. 11 is a perspective view of a lower chassis.

FIG. 12 is a perspective view showing a drive chassis and a base in a separated state.

FIG. 13 is a perspective view of a base.

FIG. 14 is an exploded perspective view of a base.

FIG. 15 is a perspective view of a part of a base.

FIG. 16 is a perspective view showing the base and the inner blade holder in a separated state.

FIG. 17 is a perspective view showing a state where the base and the inner blade holder are set.

FIG. 18 is an exploded perspective view of the inner blade holder.

FIG. 19 is a perspective view of a part of the inner blade holder.

FIG. 20 is a perspective view of an inner blade holder.

FIG. 21 is a side view showing a drive transmission mechanism of the rotary inner blade.

FIG. 22 is a vertical sectional front view showing an engagement lock mechanism of the inner blade holder.

FIG. 23 is a perspective view showing the inner blade holder and the outer blade holder set on the base in a separated state.

FIG. 24 is a plan view showing the outer blade holder partially cut away.

FIG. 25 is a vertical sectional side view of the outer blade holder.

FIG. 26 is a vertical sectional front view of the outer blade holder.

FIG. 27 is an exploded perspective view of the outer blade holder.

FIG. 28 is a perspective view showing a state in which a fixed comb blade and a movable comb blade are set.

FIG. 29 is a cross-sectional view showing a state where a fixed comb blade and a movable comb blade are set.

FIG. 30 is a perspective view showing a fixed comb blade and a movable comb blade separated from each other.

FIG. 31 is a partially cutaway perspective view showing a state where a fixed comb blade and a movable comb blade are set.

FIG. 32 is an exploded perspective view showing an outer blade and components for mounting the outer blade.

FIG. 33 is a plan view showing an engagement lock mechanism of the outer blade holder.

FIG. 34 is a front view showing a safety switch mechanism.

FIG. 35 is a side view of the safety switch mechanism.

FIG. 36 is a partial plan view of the safety switch mechanism.

FIG. 37 is an exploded perspective view of the safety switch mechanism.

FIG. 38 is a side view showing a neutral return mechanism.

FIG. 39 is a plan view showing drive transmission means of the shaving unit.

FIG. 40 is a perspective view showing another manner of assembling the cutting head.

FIG. 41 is a front view showing another drive transmission mechanism of the rotary inner blade.

FIG. 42 is a longitudinal sectional front view showing a modification of the cutting head unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Cutting head 3 Shaving blade unit 23 Drive chassis 26 Rotating inner blade 27 Outer blade of rotating inner blade 30 Movable comb blade 31 Fixed comb blade 35 Motor 37 Output shaft 45/46 Side frame 62 Transducer 66 First Drive transmission means 68 Second drive transmission means 69 Eccentric pin 75 Rotary inner blade shaft 78 Input gear 120 Groove

Claims (6)

[Claims] 1. A drive chassis 23 having opposed side frames 45 and 46 and a motor 35 mounted on an upper part of a main body case 1, a shaving blade unit 3 disposed between the side frames 45 and 46, and The shaving blade unit 3 includes a mesh-shaped outer cutter 27 and a cylindrical rotary inner cutter 2 that slides and rotates the inner surface of the outer cutter 27 about an axis 75.
6, a second outer blade 31 arranged in parallel adjacent to the outer blade 27, and a reciprocating inner blade 3 which linearly slides reciprocally on the inner surface thereof.
The drive chassis 23 is provided with a first drive transmission means 66 for reducing the rotation of the motor 35 and transmitting the rotation to the rotary inner blade 26. The second drive transmission means 68 for converting the rotation of the rotation 35 into a linear reciprocating motion and transmitting the rotation to the reciprocating inner blade 30.
A rotary electric razor, comprising: 2. The rotary type as claimed in claim 1, wherein the shaving blade unit and the drive chassis are integrally combined to form a unitized cutting head, and the cutting head is assembled on an upper portion of the main body case. Electric razor. 3. The first drive transmission means 66 drives the rotary inner blade 26 through the inside of one of the opposed side frames 45 and 46, and the second drive transmission means 68 The vibrator 62 having the drive shaft 122 is disposed in the shaving blade unit 3 and the drive shaft 1
3. The rotary electric shaver according to claim 1, wherein an upper end of the rotary electric shaver is connected to the reciprocating inner blade. 4. The rotary electric shaver according to claim 1, wherein the shaving blade unit 3 is swingably provided between the side frames 45 and 46 of the drive chassis 23. 5. The shaving blade unit 3 is provided between the side frames 45 and 46 of the drive chassis 23 and the shaft 75 of the rotating inner blade 26.
The first drive transmission means 66 has a final transmission gear G10, and is pivotally supported about a pivot axis P parallel to
The final transmission gear G10 and an input gear 78 integrated with the shaft 75 of the rotary inner blade 26 are engaged and interlocked, and the axis of the final transmission gear G10 and the pivot axis P are aligned with each other. The second drive transmission means 68 includes an eccentric pin 69 fixed on the output shaft 37 of the motor 35 and a movable comb blade 30 provided in the shaving blade unit 3 for changing the rotation of the eccentric pin 69 into a linear reciprocating motion. A groove 120 is provided on the lower surface of the vibrator 62 in a direction parallel to the swinging direction of the razor blade unit 3.
5. The rotary electric shaver according to claim 4, wherein 6. A fixed comb blade for rough shave, wherein the second outer blade is a movable comb blade which linearly slides reciprocally on the inner surface of the fixed comb blade. The rotary electric razor according to any one of the preceding claims.