JPH02232096A - Rotary electric shaver - Google Patents

Abstract

PURPOSE:To compactly house the driving mechanism of an edge shaving blade into the case of a main body by arranging the driving mechanism of the edge shaving blade, which converts the rotation of a motor to linear reciprocative motion and transmits the motion to a movable comb-teeth shaped blade, in a state to allow the vertical deformation of a floating supporting member between the upper and lower floatingly supporting members. CONSTITUTION:Between a movable comb-teeth shaped blade 51 and a motor 17 in an edge shaving blade unit 35, an edge shaving blade driving mechanism 37, which converts the rotation of the motor 17 to the linear reciprocative motion and transmits the motion to the movable comb-teeth shaped blade 51, is set separately from a receiving means 18a for inner blade drive and a transmitting means 18b. A dead space is formed between an upper floatingly supporting member 20a and a lower floatingly supporting member 20b, which are vertically parallelly arranged with being faced mutually in a case 1 of the main body to effectively support a rotary inner blade 7 freely movably in vertical direction, and by utilizing this dead space, the edge shaving blade driving mechanism 37 is arranged here.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of a rotary electric shaver. (Conventional technology) As a rotary electric shaver, the rotary inner blade, which rotates in sliding contact with the inner surface of the outer blade, is supported within the main body case so that it can move up and down, so that the outer blade is deformed up and down by the pressure exerted by the skin. There is a known rotary inner cutter that moves up and down to follow the movement of the rotary inner cutter to maintain good contact with the inner surface of the outer cutter.
Publication No. 76). On the other hand, a rotary electric shaver equipped with a razor blade like other reciprocating electric shavers is also known (Japanese Patent Laid-Open No. 59-207181). [Problems to be Solved by the Invention] The problem is based on the assumption that the former is a rotary electric shaver with a rotary inner cutter that is movable up and down, and the latter, in particular, is a rotary electric shaver with a shaving blade. This is the case when you are actually trying to get an electric shaver. When implementing this, for example, when adopting an edge shaving drive mechanism that converts the rotation of the rotary inner blade itself into a linear reciprocating motion to drive the edge shaving blade, such as the latter rotary electric shaver with an edge shaving blade, The shaving drive mechanism must be assembled so that it moves up and down to follow the up and down movement of the rotary inner blade. However, in such a case, there is a concern that the drive of the razor blade lacks stability, and the structure and assembly of the drive mechanism are extremely complicated, which further increases the size of the main body case, making it impractical. The present invention is directed to stabilizing the drive of the edge shaving blade in a rotary electric shaver as described above, in which the rotary inner cutter is supported in the main body case so as to be movable up and down, and is provided with an edge shaving blade. The purpose is to simplify the drive structure.

Another object of the present invention is to compactly house the drive mechanism of the razor blade within the main body case, thereby reducing the size of the main body case. [Means for Solving the Problems] In the rotary electric shaver of the present invention, as shown in FIG. An inner cutter support frame in which a pair of upper and lower floating support members 20a and 20b are fixed, and a rotary inner cutter 7 that rotates in sliding contact with the inner surface of the outer cutter 6 is rotatably supported on both sides of the upper floating support member 20a. A motor 17 for rotationally driving the rotary inner cutter 7 is attached to the lower floating support member 20b. Then, the rotation of the motor 17 is applied to the rotary inner cutter 7 on the inner cutter support frame 15.
The motor 17 is provided between the upper and lower floating support members 20a and 20b.
The edge shaving blade drive mechanism 37 that converts the rotation into linear reciprocating motion and transmits it to the movable blade 51 is connected to the floating support member 20a
20b is arranged in a state that allows vertical deformation. [Function] As the outer cutter 6 deforms up and down under pressure from the skin, the rotary inner cutter 7 maintains a state in close contact with the inner surface of the outer cutter 6 while moving the upper and lower floating support members 20a and 20b. Inner blade support flap through vertical deformation! Ats and motor 17
It can be moved up and down with stability. Since the edge shaving blade drive mechanism 37 is incorporated separately from the transmission means tab, there is no need for the edge shaving blade drive mechanism 37 to move up and down to follow the up and down movement of the rotary inner cutter 7.
Become. Therefore, the edge shaving blade drive mechanism 37 does not require the edge shaving movable blade 5 to follow the vertical movement of the rotary inner cutter 7.
1 can be driven. Furthermore, since the razor blade drive mechanism 37 is disposed within the dead space between the upper and lower floating support members 20a and 20b, it can be housed compactly within the main body case l. (Embodiment) An embodiment of the rotary electric shaver according to the present invention will be described based on the drawings. In FIGS. 5 and 6, the main body case 1 of this
The front and rear cases ゜la-1b are butted together and integrally connected with screws, etc. A pair of front and rear circuit boards 2, 2 and two rechargeable batteries 3, 3 supported 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. A rope-shaped outer blade 6 is mounted on the outer blade holder 5 at the top of the main body case l.
It is bent in an arch shape and installed through the main body case 1.
In the upper half of the inside, an inner cutter unit 8 in which a cylindrical rotary inner cutter 7 is laterally supported in advance, a floating support member 20 that can be deformed in the vertical direction, and a motor 17 are integrally combined. An internal operation unit P is provided so as to be vertically movable via a floating support member 20. Furthermore, the previous case 1
There is a switch operation knob 24 on the front of a, and a rear case l.
An edge shaving unit 9 is attached to the upper end of the rear surface of each part b. In FIG. 5, the outer cutter holder 5 is secured 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 l.
It is secured and supported by a locking pawl 12b with a knob attached via 3. Therefore, when the left knob-equipped locking pawl 12b is pushed in against the spring l3, the outer blade holder 5 can be removed from the main body case l together with the outer blade 6. In FIG. 1, the inner cutter unit 8 includes a cylinder-shaped rotary inner cutter 7, an inner cutter support frame 15 that horizontally supports the rotary inner cutter 7 via a rotating shaft l4, and a motor 17 for receiving rotational force. The passive means 18a and the transmission means 18b for transmitting the power received by the passive means 18a to the rotary inner cutter 7 are integrally combined. The rotary inner cutter 7 has a plurality of cutting edges 7a spirally formed in the axial direction on the outer peripheral surface of the cylinder, and has a true cylindrical shape with no cutting edges only at both ends in the axial direction. are doing. The inner blade support frame 15 includes left and right side frames 16/l6 made of metal or hard plastic, and both frames l6/l.
Bottom frame 21 connected with screws 10 between the lower ends of 6
The whole is assembled into a U-shape when viewed from the front. The bottom frame 21 can also be formed integrally with the side frames 16/16. Left and right side frames 16.1
A bearing boss 16ai6a that rotatably supports the rotating shaft l4 is provided at each upper end of the bottom frame 2l, and a passive shaft 1l is rotatably supported between the side frames l6 and 16 above the bottom frame 2l. A passive gear 31 is fixed at the center of the direction, and the passive means 18 is connected to the passive shaft 1l and the passive gear 31.
It constitutes a. As shown in FIG. 7, the right side frame 16 has a transmission means 18b consisting of a multi-stage reduction gear.
is built in, which transmits power from a gear 32 fixed to the shaft end of the passive shaft 11 to a gear 33 fixed to the shaft end of the rotating shaft l4 via a group of intermediate gears 34. Before the inner cutter unit 8 is assembled to the main body case 1, as shown in FIG. Tighten together.

The floating support member 20 consists of a pair of upper and lower plastic floating support members 20a and 20b stacked vertically and parallel to each other at a predetermined interval, and the upper floating support member 20
a is the bottom frame 2 as shown in FIGS. 1 and 13.
Thick plate part 3 overlapped with the bottom side of 1 and fastened with screws 25
9, and thin elastic arms 19 are integrally connected horizontally to the left and right ends of this thick plate portion 39 facing outward in the left and right direction,
A rod-shaped fixed end portion 19a for fixing to the inner surface of the main body case 1 is formed at the tip of each elastic arm 19. The lower floating support member 20b has a cylindrical motor holder 22, and a boss 88 through which the screw 25 passes is provided on the upper surface of the holder 22. Elastic arm 19 and thick fixed end 19a
are integrally formed. A motor 17 is attached to the lower floating support member 20b with its upper end fitted into the motor holder 22 and screwed into the screw 2.
It can be installed in a vertical position by tightening step 5. In order to maintain the left-right balance of the internal operation unit P, the motor 17 is preferably disposed directly below the center of the bottom frame 21 of the inner cutter unit 8 in the left-right direction. An output shaft 17a protruding from the upper end of the motor 17 protrudes above the motor holder 22, and an output gear 23 fixed to this protruding end engages with the passive gear 31. Note that the thick plate portion 39 of the upper floating support member 20a and the bottom frame 21
As shown in FIG. 13, openings 39a and 40 are formed in the center of each to prevent these from coming into contact with the output gear 23 and the passive gear 3l. Thus, the internal operation unit P formed by integrally combining the inner cutter unit 8, the floating support member 20, and the motor 17 is assembled inside the main body case 1. In this installation, as shown in FIG.
The fixed ends 19a of the elastic arms 19 of the floating support member 20 are engaged with the side frames 16, 16.
By vertically penetrating the upper wall 1c of the main body case 1 and abutting the front and rear cases 1a and 1b, the entire internal operating unit P is inserted into the main body case 1 with the elastic arm 19.
It is supported so that it can move up and down through the elastic deformation of. Each elastic arm 19 is formed to have a thin plate thickness in the vertical direction and a wide plate width in the front-rear direction, so that it can easily swing elastically only in the vertical direction. The elastic arms 19 may be formed by insert molding a thin metal plate such as a phosphor bronze plate or a stainless steel plate into each of the support members 20a and 20b. As shown in FIG. 1, springs 3,0 made of torsion coil springs or leaf springs are installed between the motor holder 22 of the lower floating support member 20b and the protruding piece 29 protruding from the inner surface of the main body case 1. The entire internal operating unit P is connected to the spring 3.
0, it is always auxiliarily pushed upward.

An eccentric cam 36 is fixed below the output gear 23 of the output shaft 17a, and a edge shaving blade drive mechanism 37 drives a edge shaving blade unit 35 incorporated in the edge shaving unit 9 as described later on the eccentric cam 36. It is transmission connected to. In FIGS. 6 and 10, the switch operation knob 24 attached to the outer surface of the front case 1a of the main body case 1 is
It is integrally connected via the front case 1a to a switch plate 4l which is vertically slidably locked on the inner surface of the front case 1a. The upper and lower limits of the slide of the switch operation knob 24 are regulated by contact with an upper step 42 and a lower step 43 formed on the outer surface of the front case 1a, respectively. 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. 5 and 6, 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 tray 47 is connected to the side frames l6 and 16.
The straight line of the rotary inner cutter 7 between. It is placed below. In addition, the fifth
As shown in the figure, the gap between the soil wall IC of the main body case 1 and the side frames 16 and 16 is filled with a hair stopper plate 3 made of rubber or the like.
8 to prevent hair particles falling from the rotary inner blade 7 from entering the inside of the main body case 1. As shown in FIGS. 4 and 6, 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 houses a edge shaving blade unit 35 formed by movable comb blades 51 superimposed on a fixed comb blade 50 fixed to a holder 49 so as to be able to slide back and forth in the left and right direction, and the edge shaving blade unit 35. It consists of a sharp edge shaving case 52. The edge shaving case 52 is located at a position where it is housed in the recess 48 (
6) and a position protruding to the rear outside of the recess 48 (the fourth
It is housed in a recess 48 across the figure) so as to be freely movable in parallel in the front-rear direction. The edge shaving blade unit 35 is constructed by pivoting a 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.
The support shaft extends between a posture in which the cutting edge is retracted into the edge shaving case 52 with its tip facing downward as shown in the figure, and a protruding posture in which the cutting edge protrudes backward to the rear outside of the edge shaving case 52 as shown in FIG. It can swing up and down around 53. 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 turning the switch operation knob 24. The vertical sliding operation can be performed in conjunction with this by performing a vertical sliding operation between an intermediate position 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 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 unisoto 35. 54 are 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. Then, as shown in FIGS. 4 and 12, 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, Furthermore, by sliding the pin 56 along the arcuate groove 58b centered around the support shaft 53 of the pin guide groove 58, the edge razor blade unit 35 is rotated approximately 90 degrees around the support shaft 53 within the edge shaving case 52. It oscillates. 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 incorporated between this swing plate 60 and the switch operation knob 24. As shown in FIGS. 4 and 8, 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 can swing up and down 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 on the side of the razor 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 67 inside the main body case 1, and the spring 68 constantly pulls the front end of the swing plate 60 downward (see Fig. 6). reference).

As shown in FIG. 10, 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 limit position, the horizontal rod 66 of the swing plate 60 is received by a forked arm 69 provided at the upper end of the elevating plate 61 (see FIG. 6).

Therefore, as shown in FIG.
4 is at the lower limit position and at an intermediate position pushed up one step from this position, the edge shaving case 52 is stored in the recess 48. Then, when the switch operation knob 24 is pushed up one more step from the intermediate position, the lifting temporary 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 moving plate 60 resists the force of the spring 68 and rotates around the support shaft 62 as shown by the arrow a.
The arm part 65 pushes the pin 56 of the razor blade unit 35 backward in the linear groove part 58a of the pin guide groove 58 by the rocking of the rocking plate 60.
The edge shaving case 52 moves in parallel to the rear in the recess 48 as indicated by arrow b. After the edge shaving case 52 has finished protruding rearward within the recess 48, the bin 5 of the edge shaving blade unit 35 is moved by the clockwise rocking of the rocking plate 60.
6 slides downward in the arc-shaped groove 58b of the pin guide groove 58, and the edge shaving blade unit 35 swings around the support shaft 53 in the counterclockwise direction shown by arrow C, causing its cutting edge to protrude rearward and outward. In this state, the switch operation knob 24 is
As shown in Figure 0, the elastic arm 44 is held at a position above the upper protrusion 45 and stopped. 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 swinging temporary 60 and the elevating plate 6l are returned to their original positions. Due to the rocking of the rocking plate 60, the edge shaving blade unit 35 swings in and out of the edge shaving case 52, and the edge shaving case 52 moves back into the recess 48, as shown in FIG. It turns out. When the edge shaving blade unit 35 protrudes from the edge shaving case 52 and swings as described above, its movable comb blades 51 are 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.
7a, the razor blade drive mechanism 37 is connected to the passive means 1.
8a and the transmission means l8b. The edge shaving blade drive mechanism 37 converts the rotation of the motor 17 into linear reciprocating motion and transmits it to the movable shaving blade 51. Specifically, the output gear 23 on the output shaft 17a of the motor 17
An eccentric cam 36 is fixed below the shaving unit 9, and a plastic vibrator 7 is installed between the eccentric cam 36 and the crease shaving unit 9.
Set 0.

As shown in FIGS. 9 and 13, the vibrator 70 includes a vibrator main body 72 having a long hole 71 in the middle of which a narrow hole portion 71a and a wide hole portion 7lb are continuous in front and back. A pair of thin-walled support arms 73 on the left and right sides of the rear end
is cantilevered forward, and a downward pin 74 is protruded from the rear end of each arm 73, and the bin 74 is placed on the upper surface of the motor holder 22 of the support member 20b as shown in FIG. The transducer holder 75 is fitted and fixed thereto. The vibrator 70 and the vibrator pedestal 75 are incorporated between the upper and lower floating support members 20a and 20b when they are coupled together with the screws 25, and as a result of this incorporation, the eccentric cam 36 is inserted into the elongated hole 7l of the vibrator 70. intervenes. As shown in FIG. 4, on the wall 59 of the edge shaving case 52, a driving bead 78 having two-pronged engaging portions 76 and 77 at its upper and lower ends can be rotated left and right with a connecting pin 79 at the center in the vertical direction. It can be attached 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 razor blade unit 35 retreats, the protruding piece 80 separates from the retaining portion 76. Further, a protrusion 8l 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 bead 78 in conjunction with the vertical sliding movement of the switch operation knob 24. Make it. That is, as shown in FIG. 9, the transducer pedestal 75 has sliding protrusions 82 projecting from the respective rear portions of the left and right ends of the transducer holder 75. By slidably engaging the groove 84, horizontal movement in the front-back direction is possible. Further, as shown in FIG. 4, bins 85 are provided protruding from the front portions of the left and right ends of the transducer pedestal 75, and one end of a connecting link 86 is rotatably connected to the pin 85. A pin 8 has the other end of the connecting link 86 protruding from the lower portions of the left and right ends of the elevating plate 61.
It is pivotably connected to 7. 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. 6 and 9, and the eccentric cam 36 is located in the wide hole 7lb of the vibrator 70. The vibrator 70 and the eccentric cam 36
Since contact with the oscillator 70 is avoided, the vibrator 70 is not driven. When the switch operation knob 24 is pushed up to the upper limit position, the elevating plate 6l rises as described above, as shown in FIG. The protruding piece 81 of the vibrator 70 moves horizontally backward via the connecting link 86, and the protruding piece 81 of the vibrator 70 engages the lower retaining portion 7 of the driving piece 78.
7, and the eccentric cam 36 also engages in the narrow hole 71a set to the same size as the outer diameter of the eccentric cam 36, and as the eccentric cam 36 rotates, the vibrator 70 moves between the support arms 73 and 73. Due to elastic deformation, the vibrator is reciprocated approximately parallel to the left and right on the vibrator pedestal 75. 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 6l 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 engagement portion 77 on the lower side of the drive bead 78. In addition, as shown in FIG. 9, the vibrator pedestal 75 has a through hole 89 in the center thereof through which left and right bosses 88, 88 protruding from the motor holder 22 are vertically movable. The left and right edges 89a and 89b of the through hole 89 are formed into thin, elastically deformable wave shapes to provide front and rear recesses 90 and 9l circumscribing the circumferential surface of the boss 88, as shown in solid lines in FIG. When the transducer holder 75 is in the forward retracted position as shown in FIG. When in the position, the front recess 90 engages the boss 88 and the transducer holder 7
5 are positioned and held at their respective positions.

Further, as shown in FIGS. 1 and 9, the vibrator 70 and the vibrator pedestal 75 can be moved vertically into the main body case 1 by engaging the slide protrusion 82 with the fixed guide groove 84 as described above. Although the movement in the direction is restricted, the boss 88 of the lower floating support member 20b is inserted into the through hole 89 of the transducer 70 and the transducer pedestal 75, and the boss 88 of the lower floating support member 20b is inserted into the elongated hole 7l of the transducer 70.
Since the eccentric cams 36 are respectively inserted into the inner parts so as to be vertically movable, there is no problem even when the upper and lower floating support members 20a and 20b are deformed vertically. [Effects of the Invention] According to the rotary electric shaver of the present invention, between the movable comb blade 51 of the edge shaving blade unit 35 and the motor 17,
The movable comb blade 5 converts the rotation of the motor 17 into linear reciprocating motion.
1 is installed separately from the passive means 18a and the transmission means 18b for driving the inner blade, so the edge shaving blade drive mechanism 37 is moved up and down together with the inner blade drive mechanism. The structure is simpler and easier to assemble than the conventional comb blades, and the movable comb blades 51 can be driven stably and reliably.

In particular, in the present invention, between an upper floating support member 20a and a lower floating support member 20b, which are disposed vertically in parallel to each other in the main body case 1 and support the rotary inner cutter 7 in a vertically movable manner. Since the edge shaving blade drive mechanism 37 is arranged here by utilizing the dead space that is formed, the edge shaving blade drive mechanism 37 can also be housed compactly within the main body case 1, thereby reducing the size of the main body case 1. can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the rotary electric shaver according to the present invention, and FIG. 1 is a schematic front view of the main parts, and FIGS. 2 and 3 are longitudinal side views showing the driving operation of the razor blade. Figure 4 is a vertical side view of the main part, Figure 5 is a vertical front view, Figure 6 is a sectional view taken along the line A-A in Figure 5, and Figure 7 is a cross-sectional view of the main part.
BB line sectional view in the figure, Figure 8 is C in Figure 5.
-C line sectional view, Fig. 9 is a DD line sectional view in Fig. 5, Fig. 10 is an E-E sectional view in Fig. 6, and Fig. 11 is a FF line sectional view in Fig. 5. , FIG. 12 is a sectional view taken along line GG in FIG. 5, FIG. 13 is an exploded perspective view of the internal operation unit and edge shaving unit, and FIG. 14 is an external perspective view. 1...Body case, 6...Outer blade, 7...Rotary inner blade, 15...Inner blade support frame, 16...Side frame, 17... - Motor, 18a...Passive means, 18b...Transmission means, 20a...Upper floating support member, 20b...Lower floating retainer member, 35...Edge razor blade unit, Edge Razor blade drive mechanism. Invention patent applicant Yasuo Yamashita Kyushu Hitachi Maxell Co., Ltd.

Claims (1)

[Claims] (1) A mesh-like outer cutter 6 is bent in an arch shape and stretched over the upper part of the main body case 1, and a edge shaving blade unit 35 having a fixed comb blade 50 and a movable comb blade 51 is attached to the main body case 1. Inside the main body case 1, there is a pair of upper and lower floating support members 2 which are vertically deformable and face each other vertically and parallel to each other at intervals.
0a and 20b are fixed, and the upper floating support member 20
Inner cutter support frame 15 in which a rotary inner cutter 7 that rotates in sliding contact with the inner surface of the outer cutter 6 is rotatably supported on both sides is shown at a.
A motor 17 for rotationally driving the rotary inner cutter 7 is attached to the lower floating support member 20b, and a motor 17 for rotating the rotary inner cutter 7 is attached to the inner cutter support frame 15. It is provided with a transmission means 18b for transmitting the rotation to the rotary inner cutter 7, and between the upper and lower floating support members 20a and 20b, there is an edge for converting the rotation of the motor 17 into a linear reciprocating motion and transmitting it to the movable comb blade 51. A rotary electric shaver characterized in that a razor blade drive mechanism 37 is arranged in a state that allows vertical deformation of floating support members 20a and 20b.