JP3081001B2 - Reciprocating electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver, and more particularly to a reciprocating electric shaver having a plurality of blade heads.

[0002]

2. Description of the Related Art In recent years, a reciprocating electric shaver provided with a plurality of blade heads has been provided. In this type, it is possible to shave at multiple places at the same time, but on the other hand, since there are multiple points of contact with the skin, as with a single blade head, In the case where only vertical movement is allowed by providing play, the ability to follow the skin is poor, and the provision of a plurality of blade heads tends to be meaningless.

For this purpose, Japanese Patent Application Laid-Open No. 62-227395 proposes a device in which two blade heads rotate integrally. The rotation of the double blade head ensures that the double blade head always contacts the skin.

[0004]

However, in this case, although the double-edged head is always in contact with the skin,
Since the skin is three-dimensional, the contact area of each blade head with the skin is often small, and the effect of providing a plurality of blade heads cannot be expected. As shown in U.S. Pat. No. 4,292,737, a plurality of blade heads can be individually moved up and down, and a supporting portion for this up and down movement is reciprocated by an inner blade of each blade head. The arrangement at both ends in the direction increases the followability of the plurality of blade heads to the skin, but in the case shown here, the support portion is embedded in the upper end of the razor body below the blade head. For this reason, the presence of the support portion causes an increase in the size of the razor. That is,
Above the driver that converts the rotation of the motor into reciprocating vibration of the inner blade.
When the support part is located, the vertical dimension becomes large.
If the support is arranged on both sides of the driver,
Razor book
The body width (dimension in the reciprocating direction of the inner blade) has increased.
U.

[0005] The present invention has been made in view of such a point, and an object of the present invention is to enable a plurality of blade heads to follow a skin well and to perform a light shaving .
An object of the present invention is to provide a reciprocating electric shaver that can be downsized .

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is a reciprocating electric shaver having a plurality of blade heads which are individually and vertically movably held by a frame, wherein the frame has both ends.
Equipped with vertically movable support parts on the end wall,
The support parts located within the thickness of both end walls of the
Therefore, each blade head is characterized in that both ends in the reciprocating direction of the inner blade are held independently and freely movable up and down. According to the present invention, not only the plurality of blade heads individually move up and down, but also each blade head performs a different amount of up and down movement at both ends of the inner blade in the reciprocating direction, so that a plurality of blade heads are moved. When pressed against the skin, each blade head moves to maximize the area of contact with the skin. In addition, the supporting portions that allow the both ends of each blade head in the reciprocating direction of the inner blade to freely move up and down independently are provided at both ends of the frame that are both ends of the blade head in the reciprocating direction of the inner blade.
Because it is provided on the end wall, it is possible to provide the support
Mochi that does not cause enlargement of the razor body
Of course, even if it is a frame, support parts within the thickness of both end walls
The size of the frame that holds the blade head
Styling can also be avoided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. First, the reciprocating electric shaver will be described. As shown in FIGS. 5 to 9, two blade heads 1, 1 are arranged at the upper end of a main body 2 in parallel and parallel. The trimmer blade 6 is attached to the upper end of a trimmer handle 60 which is arranged to be able to move up and down along the surface of No. 2.

The above-mentioned blade head 1 arranged at the upper end of the main body 2
As shown in FIG. 1, a rectangular frame-shaped carrier 10 is provided with an outer blade 12 bent in an arch shape, and is housed in a rectangular frame-shaped holding frame 15. And is attached to the main body 2 via the frame 18. In the figure, reference numeral 17 denotes a hook for detachably holding the holding frame 15 with respect to the frame 18.

On the other hand, a motor 3 and a pair of drivers 41 and 42 for converting the rotation of the motor 3 into reciprocating motion, a battery 30 and the like are disposed in the main body 2 via a mounting base 20. Inner blade 1 slidingly contacting the inner surface of outer blade 12 in 1, 1
As shown in FIG. 8, 3 is connected to the connecting cylinder portions 43, 43 of the drivers 41, 42 arranged in parallel and parallel, respectively, in a state where they are urged upward by a push-up spring 44. .

The driving of both drivers 41 and 42 by the motor 3 is performed as follows. That is, an eccentric shaft 32 projects from the output shaft of the motor 3 via the base 31, and a pin 4 projecting from the eccentric shaft 32 and the driver 41.
6 are connected by a link 35. The eccentric shaft 3
A base 33 is fixed to an upper end of the base 2, and a pin 47 protruded from a driver 42 is connected to an eccentric shaft 34 further protruded from the base 33 by a link 36. When the two eccentric shafts 32 and 34 rotate, the link 3
Drivers 41 and 42 are fixed at both ends to the mounting base 20 with screws 39 so that they are easily bent only in one direction.
To reciprocate. At this time, each eccentric shaft 32, 34
In a symmetrical position sandwiching the rotation center of the motor 3, that is, 180
The positions of the two drivers 41 and 42 are opposite to each other, that is, the phases of the reciprocating motions of the two drivers 41 and 42 are different from each other by 180 ° so that the vibrations are canceled by each other. .

5 is a switch handle, and 25 in FIG. 9 is a hinge plate 26 attached to the frame 18.
The receiving bracket 27 receives the main body 2 by the hinge plate 26.
A hook that locks the other end of the frame 18 whose one end is rotatably connected to the housing 28; a spring 28 that urges the hook 27; 70 is a connecting cylinder of the drivers 41 and 42 in the main body 2 A packing for dustproofing the upper opening through which 43 is inserted, and 71 is a holding member for the packing 70. The screws 39 for fixing the drivers 41 and 42 also serve to fix the holding members 71.

As shown in FIG. 7, the main body 2 having a constricted shape at the center in the vertical direction is provided with the main body case 2.
1, a bottom cover 22 attached to the lower end of the main body case 21, and a pair of side panels 23, 23 of the shape shown in FIG. These side panels 23, each of which is provided with metal plating on its outer surface and in which a plurality of rubber pieces 24 for preventing slippage, are embedded, are inserted into a pair of grooves 210 provided on the upper inner surface of the main body case 21. Engagement piece 230
, And a fixing piece 233 is provided at the lower end part which partially covers the lower surface side of the bottom cover 22. And the engagement piece 230
Is inserted into the groove 210, the pin 710 protruding from the holding metal fitting 71 enters the hole 231 provided in the engagement piece 230, and the fixing piece 233 is attached to the bottom cover 2.
The side panel 23 is attached by being fixed by a screw 234 screwed into the attachment base 20 through 2. The engagement piece 230 has a locking projection 232 at each end, and the locking projection 232 is locked to the deep end of the groove 210, thereby preventing the side panel 23 from opening.

As described above, the trimmer blade 6 is provided on the surface of the main body 2 so as to be vertically slidable.
0, and a cover 6 on the back side.
3 is attached, and the shaft 6 protrudes from the back surface.
1, the trimmer driver 62 is supported in the space between the cover 63 and the trimmer driver 62. The lower end engaging portion 620 is
When the trimmer handle 60 is moved upward, the trimmer driver 62 projecting backward from the elongated hole 630 provided in the trimmer blade 6 and having its upper end connected to the movable blade of the trimmer blade 6 is connected. Joint 45 attached to 43
The engaging portion 63 at the lower end is engaged with the trimmer blade 6 to transmit the reciprocating motion of the driver 42 to the trimmer blade 6. The cover 63 is integrally provided with a click spring 630 at a lower end thereof. When the trimmer handle 60 moves up and down, the cover 63 engages with a plurality of click projections 207 provided on the main body 2 and applies a click.

The blade head 1 and its supporting structure will be described in more detail. The blade head 1 has a mounting boss 100 provided on the outer surface of the carrier 10 and a mounting hole 120 at the end of the outer blade 12 in which the mounting boss 100 is curved in an arch shape. And the outer edge 12 is fixed to the carrier 10 by heat sealing the tip. The carrier 10 here has locking holes 11 on both end surfaces in the longitudinal direction and a guide boss 101 on one side surface.

On the other hand, the holding frame 15 is attached to the frame 18 by locking the hooks 17 at both ends in locking recesses 180 provided on the inner walls at both ends of the frame 18 and has a hook 17 provided with a push button. The spring 17 is provided on both ends of the spring 17 for enhancing the elastic force of the hook 17 in addition to the hook 17 at both ends.
And a support portion 16 for supporting the two-blade heads 1 and 1 respectively. These support portions 16 include a pair of elastic pieces 160 extending substantially in parallel with a vertical interval,
A connecting portion 161 connecting the front ends of the two elastic pieces 160 is provided. A locking boss 162 is formed integrally with the connecting portion 161 and is positioned between the upper and lower elastic pieces 160. Each blade head 1 is provided with a locking boss 1 in a locking hole 11 on both end faces of the carrier 10.
62 is attached to the holding frame 15 by being inserted.

Due to the presence of the upper and lower elastic pieces 160, the connecting portion 161 can be moved up and down, and the blade heads 1 each having one end attached to the supporting portion 16 configured as described above. Numerals 1 are vertically movable substantially in parallel to each other and therefore do not come into contact with each other, and the double-blade heads 1 are individually movable vertically as shown in FIG. In addition, as shown in FIG. 4 (b), each blade head 1 can be in a state where the upper and lower positions of both ends in the longitudinal direction are different. For this reason, when the double blade heads 1, 1 are pressed against the skin, the blade heads 1, 1 move up and down according to the ups and downs of the skin and tilt, so that the contact area between each blade head 1 and the skin is always constant. The attitude of each blade head 1 is changed so as to be the maximum.

The provision of the support portions 16 at both ends in the longitudinal direction of the blade head 1 to elastically move the blade head 1 up and down in this way means that the blade head 1 is not only free to tilt. In addition, since the support structure does not have a width in the short direction, the width can be reduced. In addition, the support portion 16 is
Are provided in the walls at both ends of the
Is provided at both ends in the longitudinal direction of the pad 1 in this longitudinal direction.
What would increase the total length of the frame 18 in
Therefore, the existence of the support portion 16 is
Obstacles to the miniaturization of the room 18 and the entire electric shaver
It will never be. In addition, in the state where there is no load, that is, when the inner blade 13 that is not pressed against the skin and receives the upward urging force of the push-up spring 44 does not contact the inner surface, In the state shown in FIG. 2, the range in which the support portion 16 can move up and down is α upward and β downward.
is set to be β, and when the inner blade 13 contacts and is pushed up, the support portion 16 moves upward by the above α,
When pressed against the skin, it can sink downward by a maximum of α + β. This is done by minimizing the load on the elastic piece 160 in the support portion 16 to minimize the elastic piece 1
This is because fatigue is less likely to occur in 60.

The holding frame 15 has a pair of guide ribs 151, 15 on its inner surface which restrict the longitudinal movement of the blade head 1 by engagement with the guide boss 101 of the blade head 1.
1 and a locking rib 152 that engages with a locking projection 181 provided on the frame 18 to position the holding frame 15 with respect to the frame 18, and a center rib that connects upper ends between both ends in the longitudinal direction. 153 are provided. The center rib 153 is formed so that the cross section of both ends becomes thick. When a strong force is applied to the blade head 1 from the lateral direction, both end walls of the carrier 10 come into contact with both ends of the center rib 153. The carrier 10 is supported to prevent contact between the carriers 10 and damage to the outer blade 12.

In the embodiment shown in FIG. 11, the holding frame 15 is made of plastic or the like and is simultaneously embedded in the frame 18 to integrate them.

[0020]

As described above, in the present invention, not only the plurality of blade heads individually move up and down, but also each blade head performs a different amount of up and down movement at both ends in the reciprocating direction of the inner blade. In addition, when a plurality of blade heads are pressed against the skin, each blade head moves so as to maintain the contact area with the skin to a maximum. It can be utilized to the fullest extent, and a plurality of blade heads can follow the skin well to perform light shaving. In addition, a support portion that allows the both ends of each blade head in the reciprocating direction of the inner blade to move up and down independently is provided for the blade head.
Provided on the walls at both ends of the frame, which are both ends in the reciprocating direction of the inner blade
The razor body
Miso that can be used as a grip without causing a large size
The body can be slender and short in vertical dimension.
And support parts are provided on the wall surfaces at both ends
Even if it is a frame, the support part is placed within the thickness of both end walls
Size of the frame in the reciprocating direction of the inner blade
It is also possible to avoid molding, and to improve the function of following the skin without sacrificing the size.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is a front view of a support unit according to the first embodiment.

FIG. 3 is a sectional view of the same.

FIGS. 4 (a) and 4 (b) are explanatory views of the movement of the blade head in the above.

FIG. 5 is a front view showing the overall shape of the above.

FIG. 6 is a longitudinal sectional view of the same.

FIG. 7 is a transverse sectional view of the same.

FIG. 8 is an exploded perspective view of the main body and the inner blade according to the third embodiment.

FIG. 9 is an exploded perspective view of the same.

10A and 10B show a side panel of the above, wherein FIG. 10A is a plan view, FIG. 10B is a front view, and FIG. 10C is a bottom view.

FIG. 11 is an exploded perspective view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blade head 10 Carrier 12 Outer blade 15 Holding frame 16 Support part 18 Frame

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masao Tanahashi 1048 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Works, Ltd. (56) References JP-A-63-197484 (JP, A) JP, U) U.S. Pat. No. 4,292,737 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B26B 19/04

Claims (5)

(57) [Claims] 1. A reciprocating electric razor having a plurality of blade heads individually and vertically held on a frame.
The frame has supporting parts that can move up and down on the wall at both ends.
Are provided within the thickness of both end walls of the frame.
A reciprocating electric razor , wherein each of the blade heads is independently movably held at both ends in the reciprocating direction of the inner blade by the supporting portion . 2. The support portion extends substantially parallel from the frame.
And the other ends of these elastic pieces are connected to each other.
And a blade head attached to this connection.
The reciprocating electric shaver according to claim 1, characterized in that it is kicked. 3. The vertical movement range of the connecting portion is higher than the lower side.
3. The reciprocating electric shaver according to claim 2, wherein the side is smaller . 4. The blade head has an outer blade, and the outer blade is attached to the outer blade.
And is held up and down by the frame.
The reciprocating electric shaver according to claim 1, comprising a carrier . 5. When the frame is provided with a detachable holding frame,
Both support the blade head on this holding frame so that it can move up and down.
The reciprocating electric shaver according to claim 1, further comprising a support portion .