JPH02211194A - Rotary type electric shaver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotary electric shaver, and more specifically, an inner cutter that is in close contact with the inner surface of a mesh-like outer cutter is driven to rotate around a horizontal axis. The present invention relates to a rotary electric shaver having a cylinder-shaped structure.

[Conventional technology]

This type of rotary electric shaver consists of a cylinder-shaped inner cutter, a motor, and an inner cutter drive mechanism that transmits the motor output to the inner cutter to form one inner cutter unit, and this inner cutter unit is attached to the main body case. There is one in which the inner cutter is supported so as to be movable up and down within the inner cutter and is constantly urged upward by a leaf spring to bring the inner cutter into close contact with the inner surface of the outer cutter (Japanese Utility Model Publication No. 53-61290).

In addition, some rotary electric razors of this type are equipped with a edge shaving blade unit that combines a fixed comb blade and a movable comb blade for edge shaving (Japanese Patent Laid-Open No. 59-20718
Publication No. 1).

[Problem to be solved by the invention]

However, in the rotary electric shaver equipped with the above-described edge shaving blade unit, the edge shaving blade drive mechanism uses the rotation of the inner cutter itself to drive the movable comb blades of the edge shaving blade unit.

Therefore, the edge shaving blade drive mechanism must be assembled so that it moves up and down along with the up and down movement of the inner cutter, and there is a concern that the drive of the movable comb blade lacks stability, and the structure of the drive mechanism The assembly was very complicated and it was impractical.

The present invention provides a rotary electric shaver in which the inner cutter unit is vertically movably supported within the main body case and is provided with a edge shaving blade unit, in which the movable comb blades of the edge shaving blade unit For drive stability,
Another purpose is to simplify the drive structure.

[Means to solve the problem]

In the rotary electric shaver of the present invention, for example, as shown in FIG.
Inner blade drive mechanism 18 that transmits the rotation of the motor 17 to the inner blade 7
It is installed inside the main body case 1 separately from the main body case 1.

[Effect]

By incorporating the edge shaving blade drive mechanism 37 separately from the inner blade drive mechanism 18 as in the above configuration, the edge shaving blade drive mechanism 37 does not need to be moved up and down together with the inner blade drive mechanism 18. Therefore, the razor blade drive mechanism 37
The movable comb blade 51 can be driven without moving up and down together with the inner blade drive mechanism 18 as in the conventional case.

〔Example〕

A first embodiment of the rotary electric shaver according to the present invention
The explanation will be given based on the figures (Figure 1).

In FIG. 2 and FIG. 3, the main body case 1 of this is
The front and rear cases 1a and 1b are butted against each other and integrally connected with screws or the like. A pair of front and rear circuit boards 2, 2 and two rechargeable batteries 3, 3 sandwiched between them are incorporated in the lower half of the main body case 1, and a charging plug 4 is installed at the bottom of the case. is installed.

At the top of the main body case 1, a mesh-like outer blade 6 is attached to an outer blade holder 5.
It is bent in an arch shape and installed through the main body case 1.
An inner cutter unit 8 in which a cylindrical inner cutter 7 is laterally supported is installed in the upper half of the inner cutter so as to be vertically movable and biased upward. Furthermore, a switch operation knob 24 is attached to the front surface of the front case 1a, and a shaving unit 9 is attached to the upper end of the rear surface of the rear case 1b.

In FIG. 2, the outer cutter holder 5 is engaged with and supported by a locking pawl 12a provided at the upper right end of the main body case 1, and the left wall portion of the outer cutter holder 5 is attached to the upper left end of the main body case l by a spring 1.
It is secured and supported by a locking pawl 12b with a knob attached via 3. Therefore, when the left knob-equipped locking claw 12b is pushed in against the spring 13, the outer cutter holder 5 can be removed from the main body case 1 together with the outer cutter 6.

2 and 10, the inner cutter unit 8 includes a cylinder-shaped inner cutter 7, a pair of left and right inner cutter support frames 15 and 16 that horizontally support this via a driven shaft 14, and a motor 1.
7, and an inner blade drive mechanism 18 consisting of a multistage gear group that transmits the rotation of the motor 17 to the driven shaft 14. This inner blade unit 8 has upper and lower support members 19,
It is supported so that it can move up and down at 2o.

Cylinder-shaped inner blade, 7. As shown in Fig. 1O, the cylinder has a plurality of cutting edges 7a spirally formed in the axial direction on the outer circumferential surface of the cylinder. It is structured in a cylindrical shape.

In Fig. 2, the left and right inner blade support frames 15 and 16 are made of metal or hard plastic, and the main body case 1
The frames 15 and 16 are assembled vertically through the upper wall 1c, and the lower ends of the frames 15 and 16 are connected to the bottom frame 21 with screws 10, so that the frame as a whole is assembled into a U-shape when viewed from the front. Bearing bosses 15a16a rotatably support the driven wheels 14 at the upper ends of the left and right inner cutter support frames 15 and 16.
As shown in FIG. 4, an inner cutter drive mechanism 18 is assembled to the inner cutter support frame 16 on the right side.

In FIG. 2, upper and lower plastic support members 19 and 20 are overlapped and integrally connected to the bottom sides of the two bottom frames of the left and right inner cutter support frames 15 and 16 with screws 25. The motor 17 is fitted and supported in a vertical position into a cylindrical motor holder 22 integrally formed in the center of the lower support member 20. An output gear 23 fixed to an output shaft 17a protruding above the motor holder 22 from the upper end of the motor 17 is transmission connected to the inner blade drive mechanism 18. The inner blade drive mechanism 18 rotatably supports a driving shaft 1 between the inner blade support frames 15 and 16 above the bottom frame 21, and a gear 31 fixed at the axial center of the driving shaft 1). The gear 32 meshes orthogonally with the output gear 23 and is fixed to the shaft end of the driving shaft 1), and power is transmitted to the gear 33 fixed to the shaft end of the driven shaft 1) via a group of intermediate gears 34. (See Figure 4). As shown in FIG. 10, the support member 19 and the bottom frame 21 are provided with openings 39 and 40 in their respective centers to prevent them from contacting and interfering with the output gear 23 and gear 3I. are avoiding.

An eccentric cam 36 is fixed below the output gear 23 of the output shaft 17a, and the eccentric cam 36 is connected to a edge shaving blade drive mechanism 37 that drives the edge shaving blade unit 35 incorporated in the edge shaving unit 9 as described later. Transmission connected.

As shown in FIG. 10, the upper support member 19 has thin elastic arms 19a directed outward in the left-right direction at the left and right ends of a thick plate portion 19c that is overlaid and fastened to the bottom side of the bottom frame 21. The elastic arms 19a and 1 are integrally provided horizontally and
A rod-shaped fixed end portion 19 b - 19 b for fixing to the inner surface of the main body case 1 is formed at the tip of the main body case 1 .

Further, the lower support member 20 has thin elastic arms 20a, 20a and thick fixed end portions 20b, 20b integrally formed at the left and right ends of the motor holder 22.

On the other hand, as shown in FIG. 2, on the inner surface of the main body case 1,
A pair of left and right engaging recesses 26, 26 and 27, 27 are provided to project upwardly and downwardly, respectively. The fixed ends 19b and 20b of the elastic arms 19a and 20a are connected to the engagement recesses 26 and 27, respectively.
are engaged and supported.

As a result, the support members 19 and 20 are vertically movably supported within the main body case 1 via the upper and lower and left and right pairs of elastic arms 19a and 20a. Each elastic arm 19
a.20a is configured to be able to elastically swing only in the vertical direction by forming the plate thickness in the vertical direction to be thin and the plate width in the front-to-back direction to be wide. Therefore, the inner blade unit 8
can be moved up and down while being positioned back and forth.

As shown in FIG. 2, a torsion coil spring 30 is interposed between the motor holder 22 of the lower support member 20 and a protrusion 29 protruding from the inner surface of the main body case 1. The entire blade unit 8 is constantly urged upward by the spring 30.

3 and 7, the switch operation knob 24 attached to the outer surface of the front case 1a of the main body case 1 is connected to a switch plate 41 that is locked to the inner surface of the front case 1a so as to be slidable up and down. They are integrally connected via la. What are the upper and lower limits of the slide of the switch operation knob 24?

They are regulated by contact with an upper stage part 42 and a lower stage part 43 formed on the outer surface side of the front case la. A pair of left and right elastic arms 44 for moderation are connected to the lower end of the switch plate 41, and the tips of the elastic arms 44 are engaged with the inner surface of the front case 1a to move the switch operation knob 24 to its lower sliding limit. Two protrusions 45 are provided on the upper and lower sides for elastically positioning and holding an intermediate position one step above the non-use position and a use position at the upper limit of the slide. In addition, a pair of slide contacts 46 are provided at the bottom of the switch plate 41, and lines for starting and stopping the motor corresponding to these slide contacts 46 are printed on the front surface of the front board 2, so that the switch can be operated. When the knob 24 is at the lower limit non-use position, the connection between the motor 17 and the battery 3 is cut off, and when it is at the intermediate position and the upper limit use position, the motor 17 is connected to the battery 3 and driven. ing.

In FIGS. 2 and 3, a hair tray 47 is attached to the rear side of the upper part of the main body case 1 so as to be able to be pulled out to the rear. The hair receiving tray 47 is disposed directly below the inner cutter 7 between the left and right inner cutter support frames 15 and 16 of the inner cutter unit 8. In addition, as shown in FIG. 2, the upper wall I of the main body case 1
The gap between C and the inner blade support frames 15 and 16 is closed with a hair stopper plate 38 made of rubber or the like to prevent hair debris falling from the inner blade 7 from entering the inside of the main body case 1.

As shown in FIGS. 1 and 3, a recess 48 in which the edge shaving unit 9 is housed is formed below the hair receiving tray 47 on the rear side of the upper part of the main body case 1. The edge shaving unit 9 is movable with respect to the fixed comb blades 50 fixed to the holder 49. It consists of an edge shaving case 52 for storage.The edge shaving case 52 extends between a position where it is stored in the recess 48 (FIG. 3) and a position where it projects to the rear outside of the recess 48 (FIG. 1). The razor blade unit 3 is housed in the recess 48 so as to be freely movable in parallel in the front-rear direction.
5 pivots the support shaft 53 protruding from the left and right side surfaces of the holder 49 to the inner surfaces of the left and right side walls of the edge shaving case 52, so that the cutting edge thereof can be placed downward in the edge shaving case 52 as shown in FIG. As shown in Figure 1 (
It is capable of vertically swinging around the support shaft 53 between a protruding position in which the cutting edge protrudes rearward to the rear outside of the edge shaving case 52.

The operation of moving the edge shaving case 52 back and forth within the recess 48 and the operation of swinging the edge shaving blade unit 35 in and out around the support shaft 53 within the edge shaving case 52 are performed by the switch operation knob 24. This can be performed in conjunction with this by sliding up and down between an intermediate position, which is pushed up one step from the lower limit position, and the upper limit position. That is, between the edge shaving case 52 and the switch operation knob 24, there is an egress/retraction operation mechanism 54 that converts and transmits the vertical movement of the switch operation knob 24 into the back and forth movement of the edge shaving case 52 and the rocking motion of the edge shaving blade unit 35. is provided. Regarding the egress/retraction operation mechanism 54, as shown in FIG.
5 is provided protrudingly, and left and right pins 56 and 5 are provided at the tip of the arm 55.
7 protrudes coaxially. As shown in FIGS. 1 and 9, the tip of the arm 55 is made to protrude from a notch 52a that is opened in a part of the wall 59 of the edge shaving case 52 facing inside the main case 1. The pins 56 are slidably engaged with the U-shaped pin guide grooves 58 formed on the inner surfaces of the left and right side walls inside the recess 48 of the main body case 1.

The edge shaving case 52 moves in parallel in the recess 48 in the front-back direction by sliding the pin 56 along the linear groove 58a that is horizontal in the front-back direction of the U-shaped pin guide groove 58. Also, by sliding the pin 56 along the arcuate groove 58b centered on the support shaft 53 of the pin guide groove 58, the edge shaving blade unit 35 moves around the support shaft 53 within the edge shaving case 52. Swings approximately 90 degrees.

In addition, a swing plate 60 is provided inwardly from the recess 48 in the main body case 1.
is incorporated, and an elevating plate 61 is also incorporated between this swing plate 60 and the switch operation knob 24.

As shown in FIGS. 1 and 5, the swing plate 60 has a support shaft 62 protruding from its left and right ends, and the support shaft 62 is fitted into a shaft hole 63 provided on the inner wall side of the main body case 1. By this,
It is vertically swingable around the support shaft 62. This rocking plate 6
An arm portion 65 having an elongated hole 64 is provided protruding from the rear end of the arm portion 65, and the pin 57 of the arm 55 of the edge shaving blade unit 35 is engaged with the elongated hole 64 of the arm portion 65. Furthermore, the swing plate 60
has a horizontal rod 66 inserted and fixed in the left and right direction at its front end,
A tension spring 68 is hung between the left and right ends of the horizontal rod 66 and the spring receiver part 67 inside the main body case 1, and this spring 68 always pulls the front end side of the swing plate 60 downward (the third (see figure).

As shown in FIG. 7, the elevating plate 61 is attached to the lower position of the front end of the rocking plate 60 so as to be vertically slidable along the inner surface of the main body case 1.
At the lower slide limit position of 1, the horizontal rod 66 of the swing plate 60 is stopped by a forked arm 69 provided at the upper end of the elevating plate 61 (see FIG. 3).

Therefore, as shown in FIG. 3, when the switch operation knob 24 is at the lower limit position and at the intermediate position pushed up one step from this position, the edge shaving case 52 is moved into the recess 4.
It is stored in 8. And the switch operation knob 24
When the switch is pushed up one more step from the intermediate position, the lifting plate 61 is pushed up by the upper end of the switch plate 41 that is integrated with the knob 24, as shown in FIG. The arm portion 65 of the shaving blade unit 35 swings clockwise around the support shaft 62 as shown by the arrow a against the force of the shaving plate 60.
6 is pushed rearward within the linear groove 58a of the pin guide groove 58, and the edge shaving case 52 is translated backward within the recess 48 as indicated by the arrow. After the edge shaving case 52 has finished protruding backward within the recess 48, the rocking plate 60
The pin 56 of the razor blade unit 35 slides downward in the arcuate groove 58b of the bin guide groove 58 due to the clockwise rocking of the razor blade unit 35, and the edge razor unit 35 rotates around the support shaft 53 in the counterclockwise direction shown by arrow C. The blade swings to cause the cutting edge to protrude rearward and outward. This state is maintained by stopping the switch operating knob 24 at a position where the elastic arm 44 passes over the upper protrusion 45 as shown in FIG.

When the switch operation knob 24 is pulled down from the upper limit position, the swinging plate 60 swings counterclockwise in the direction opposite to the arrow a shown in FIG. Pushed down by the horizontal rod 66,
The swing plate 60 and the elevating plate 61 are returned to their original positions. Due to the rocking of the rocking plate 60, as shown in FIG.
As the edge shaving blade unit 35 swings into and out of the edge shaving case 52, the edge shaving case 52 moves back into the recess 48.

When the edge shaving blade unit 35 protrudes from the edge shaving case 52 and swings as described above, its movable comb blade 51 is driven using the motor 17 as a power source. That is, the drive is performed by the edge shaving blade unit 35 and the output shaft 1 of the motor 17.
This is accomplished by providing a razor blade drive mechanism 37 separately from the inner blade drive mechanism 18 between the inner blade drive mechanism 18 and the inner blade drive mechanism 18.

The edge shaving blade drive mechanism 37 converts the rotation of the motor 17 into linear reciprocating motion and transmits it to the movable comb blade 51. Specifically, the output gear 23 on the output shaft 17a of the motor 7
An eccentric cam 36 is fixed below. Furthermore, a plastic vibrator 70 is disposed between the output shaft 17a of the motor 17 and the crease shaving unit 9. The vibrator 70 is the sixth
As shown in the figure and FIG.
A pair of left and right thin-walled support arms 73 are cantilevered forward from the left and right of the rear end of the vibrator body 72, which has a long hole 71 in which the wide hole 71a and the wide hole 71b are continuous in the front and back. A downward pin 74 is provided at the rear end of the arm 73, and the pin 74 is connected to the support member 20 as shown in FIG.
The vibrator holder 75 is fitted into and fixed to a vibrator holder 75 placed on the upper surface of the motor holder 22 . The eccentric cam 36 is inserted into the elongated hole 71 of the vibrator 70.

As shown in FIG. 1, on the wall 59 of the edge shaving case 52, a driving piece 78 having two-pronged engaging portions 76 and 77 at its upper and lower ends is pivoted left and right with a connecting pin 79 at its vertical center. Can be mounted freely. The driving piece 78
For the upper engaging portion 76 of the edge shaving blade unit 3
5 protrudes rearward, the protruding piece 80 protruding from the movable comb blade 51 engages, and as the edge shaving blade unit 35 retreats, the protruding piece 80 separates from the retaining portion 76. Further, a protruding piece 81 protruding from the center of the rear end of the vibrator 70 engages and disengages from the retaining portion 77 on the lower side of the drive piece 78 in conjunction with the vertical sliding movement of the switch operation knob 24. Make it. That is, as shown in FIG. 6, the transducer pedestal 75 has slide protrusions 82 protruding from the rear portions of the left and right ends thereof, respectively, and grooves 84 of the left and right fixed guides 83 provided inside the main body case 1 in the front-rear direction. By slidably engaging with, horizontal movement in the front and rear direction is possible. Also,
As shown in FIG. 1, pins 85 are provided protruding from the front portions of the left and right ends of the transducer pedestal 75, and a connecting link 85 is provided on the bin 85.
A pin 87 is rotatably connected to one end of the connecting link 86, and the other end of the connecting link 86 is provided to protrude from the lower portions of the left and right ends of the elevating plate 61.
It is pivotably connected to.

Thus, when the switch operation knob 24 is at the lower limit position, the vibrator pedestal 75 is in the forward position as shown in FIGS. 3 and 6, and the eccentric cam 36 is located in the wide hole 71b of the vibrator 70. The vibrator 70 and the eccentric cam 36
Contact with the vibrator 70 is avoided, and the vibrator 70 is not driven. When the switch operation knob 24 is pushed up to the upper limit position, the elevating plate 61 rises as described above, as shown in FIG.
horizontally move rearward via the connecting link 86 while keeping the
The protruding piece 81 of the vibrator 70 engages with the engagement portion 77 on the lower side of the drive piece 78, and the eccentric cam 36 engages with the narrow hole portion 71a set to the same size as the outer diameter of the eccentric cam 36, causing eccentricity. As the cam 36 rotates, the vibrator 70 is reciprocated substantially parallel to the left and right on the vibrator pedestal 75 due to the elastic deformation of the support arms 73. Driven by the vibrator 70, the drive piece 78 swings left and right around the coupling pin 79, thereby moving the movable comb blade 51.
to drive.

When the switch operation knob 24 is pulled down from the upper limit position, the elevating plate 61 is lowered by the tension of the spring 68 as described above, and along with this lowering, the vibrator pedestal 75 is pulled back to the forward position via the connecting link 86. The protruding piece 81 of the vibrator 70 separates from the lower engagement portion 77 of the drive piece 78 .

As shown in FIG. 6, the vibrator pedestal 75 has left and right bosses 8 protruding from the motor holder 22 at its center.
The left and right edges 89a and 89b of the through hole 89 are formed into thin, elastically deformable wave shapes so that the front and rear edges circumscribe the circumferential surface of the boss 88. When the transducer pedestal 75 is in the forward retracted position, the rear recess 91 engages with the boss 88, as shown by the solid line in FIG. When the transducer pedestal 75 is in the rear entry position as shown by the dotted chain line, the front recess 9
0 engages with the boss 88, and the vibrator pedestals 75 are positioned and held at their respective positions.

[Another example]

12 to 15 show another embodiment of the invention. In this embodiment, the advancing/retracting operation mechanism 54 of the edge shaving blade unit 35 and the edge shaving blade drive mechanism 37 are different from those of the above embodiments. In the egress/retraction operation mechanism 54 of this embodiment, the edge shaving blade unit 35 is placed in a sideways position with its blade tip protruding backwards in a recess 48 opened on the rear surface of the main body case l, and the elevating plate 61 is moved in this position. It is made to move forward and backward in conjunction with the lifting and lowering movements. For this purpose, a "C" shaped link 93 that can freely swing back and forth around a shaft 92 is arranged between the razor blade unit 35 and the lifting plate 61, and one end of the link 93 above the shaft 92 is arranged. The arm portion 9 has a long hole 94 formed in the edge and protrudes from the razor blade unit 35.
The shaft 9 of the link 93 is rotatably connected to the pin 96 of the link 93.
A horizontal rod 97 attached to the other end below 2 is rested on the upper end of the elevating plate 61. The link 93 is biased to rotate counterclockwise by a tension spring 68 that is applied across the horizontal rod 97 and the spring receiver 67 in the main body case 1. In this case, as shown in FIG. 14, when the lift plate 61 is pushed up by the upper end of the switch plate 41 integrated with the switch operation knob 24, the link 93 swings clockwise around the shaft 92 against the spring 68. The edge shaving blade unit 35 is moved to protrude rearward from the recess 48. When the switch operation knob 24 is pulled down, the link 93 swings counterclockwise around the shaft 92 due to the tensile force of the spring 68, moving the razor blade unit 35 into and out of the recess 48 as shown in FIG. let

Further, in the razor blade drive mechanism 37, a drive piece 78 is pivotally mounted below the recess 48 in the main body case 1 about a shaft 98 so as to be swingable left and right. An L-shaped vibrator 99 is arranged between the drive piece 78 and the eccentric cam 36 on the output shaft 17a of the motor 17.

The vibrator 99 has a horizontal long hole 71 in which a wide hole 71b wider than the outer diameter of the eccentric cam 36 and a narrow hole 71a having the same dimensions as the outer diameter of the eccentric cam 36 are continuous in the front and back. A plate portion 99a and a thin hinge 99 at the rear end of the horizontal plate portion 99a.
and a vertical plate portion 99c integrally formed via b.

The vertical plate part 99c has a horizontally elongated long hole 100 in the middle part in the vertical direction. An engaging portion 102 is provided to engage with the lower end portion 78a of the drive piece 78. The horizontal plate portion 99a has an eccentric cam 36 fixed in the elongated hole 71, and its front end is connected to the link 93.
It is pivotally connected via a joint 104 to a bifurcated arm portion 103 projecting downward from a lower portion of the shaft 92 of the shaft 92 . The joint 104
has left and right horizontal shafts 105 protruding to the left and right sides thereof, and a vertical shaft 106 between the left and right horizontal shafts 105, and the horizontal shaft 105 has a long hole 107 provided in the arm portion 103. The vertical shaft 106 is inserted into a hole 108 provided at the front end of the horizontal plate portion 99a of the vibrator 99. In this case, as shown in FIG. 14, when the link 93 swings clockwise under the pushing up action of the elevating plate 61, the razor blade unit 35 protrudes rearward from the recess 48 as described above. At the same time, the protruding piece 80 protruding from the movable comb blade 51 engages in the bifurcated engaging portion 76 provided at the upper end of the drive piece 78 . At the same time, due to the clockwise rocking of the link 93, the vibrator 99 is moved horizontally forward in the case while being pulled by the arm 103 and the joint 104 that are integrated with the link 93, and is eccentrically moved as shown in FIG. The cam 36 engages in the narrow hole 71a, and as the eccentric cam 36 rotates, the vibrator 9
9 is guided by the axis lO1 while the longitudinal axis 106 of the joint 104
It reciprocates with a constant stroke in the left and right directions.

As the vibrator 99 reciprocates from side to side, the drive piece 78 swings around the shaft 98 to drive the movable comb blade 51.

〔Effect of the invention〕

The rotary electric shaver of the present invention has a mechanism between the movable comb blades 51 of the edge shaving blade unit 35 and the motor 17, which converts the rotation of the motor 17 into linear reciprocating motion and transmits it to the movable comb blades 51. Since the shaving blade drive mechanism 37 is installed separately from the inner blade drive mechanism 18, its structure is improved compared to the conventional one in which the edge shaving blade drive mechanism 37 moves up and down together with the inner blade drive mechanism 18. It is simple and easy to assemble, and the movable comb blades 51 can be driven stably and reliably.

[Brief explanation of the drawing]

Figures 1 and 1) show an embodiment of the rotary electric shaver according to the present invention. A in Figure 2
-A sectional view, Figure 4 is a BB-B sectional view in Figure 2, Figure 5 is a C-C sectional view in Figure 2, and Figure 6 is a D-D sectional view in Figure 2. , FIG. 7 is a sectional view taken along line E-B in FIG. 3, FIG. 8 is a sectional view taken along line F-B in FIG. 2, FIG. 9 is a sectional view taken along line G-C in FIG. 2, and FIG. of the inner blade unit and edge shaving unit. Each exploded perspective view, the first) is an external perspective view. 12 to 15 show another embodiment of the present invention, FIG. 12 is a vertical sectional side view of the main part showing the retracted state of the razor blade unit, and FIG. -H line sectional view, Fig. 14 is a vertical sectional side view of the main part showing the protruding state of the razor blade unit, and Fig. 15 is II in Fig. 14.
There is a cross-sectional view along line H. ■...Body case, 6...Outer cutter, 7...Inner cutter, 8...Inner cutter unit, 14...Driver shaft, 15, 16... ...Inner cutter support frame, 17...Motor, 18...Inner cutter drive mechanism, 30...Spring, 35...Edge razor blade unit, 37...Kine razor blade Drive mechanism, 50...Fixed comb blade, ・Movable comb blade. Inventor Yasuo Yamashita

Claims (1)

[Claims] (1) A mesh-like outer cutter 6 is stretched in an arched manner on the upper part of the main body case 1, and an inner cutter support frame 15 in which a cylindrical inner cutter 7 is supported on both sides via a driven shaft 14・16, the motor 17 mounted on the inner blade support frames 15 and 16, and the motor 17
An inner cutter unit 8 consisting of an inner cutter drive mechanism 18 that transmits the rotation of This edge shaving blade is constantly biased upward toward the outer blade side by a spring 30, and is composed of a main body case 1, a fixed comb blade 50, and a movable comb blade 51 that slides in sliding contact with the fixed comb blade 50 and reciprocates linearly. In the rotary electric shaver to which the unit 35 is attached, the movable comb blades 51 and the motor 1
A razor blade drive mechanism 37 that converts the rotation of the motor 17 into linear reciprocating motion and transmits it to the movable comb blade 51 is connected between the movable comb blade 51 and the
A rotary electric shaver characterized in that the inner blade drive mechanism 18 is installed separately.