JP2000271353A - Reciprocating electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reciprocating electric razor with soft touch to the skin when in use by selecting the form of a blade head optimum for how to shave in a user. SOLUTION: This razor has three blade heads capable of respectively independently and freely floating, the central blade head is used as a slit blade head 3 for rough shaving and both outside blade heads 2 are used as net blade heads 4 for finish shaving. Concerning such a reciprocating electric razor, a slit blade cassette 5 is freely attachable and detachable and a closing means 6 is provided for closing a gap between both the outside net blade heads 4 and 4 when the slit blade cassette 5 is detached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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, in reciprocating electric razors,
The use of multiple heads and functional heads is progressing. In particular, a three-head structure is used, in which the center blade head is a slit blade for rough shaving, and the two blade heads on both outer sides are net blades for finish shaving. Many have been proposed. As an example, Japanese Patent Application Laid-Open No. 6-182064 discloses a method in which blade heads for finishing shaving are arranged on both outer sides of a blade head for rough shaving in the center, and each blade head is placed in an optimum state. It is made to be able to float. In this example, by having a blade head that is functionalized, in use, the long beard is shortened to a certain length by the central slit blade, which is easy to catch the long beard, and then further shortened by both outer net blades. Such an efficient shaving is possible, and each blade head is floated in an optimum state, thereby improving the feeling of contact of the blade head during use.

By the way, in the case of the above-mentioned conventional example, in order to increase the efficiency of introducing a beard, it is necessary that the edge of the slit blade is sharp and has a wide slit groove width. As a result, the unshaved residue of a long beard can be extremely reduced, but on the other hand, the feeling of contact with the skin deteriorates, and a problem arises in that the skin is given a rough feel during use. In particular, if you use it carefully every day without leaving a shave, there is almost no long beard, so even though you can shave with only a net blade, use a shave with a bad feeling of skin contact To force others.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and a blade head form most suitable for a user's shaving method can be selected. It is intended to provide an electric shaver.

[0005]

A reciprocating electric shaver according to a first aspect of the present invention has three blade heads 2, each of which can be floated independently, and a central blade head 2 for rough shaving. In a reciprocating electric razor in which the slit blade head 3 is used as the outer blade head 2 and the outer blade head 2 is used as the net blade head 4 for shaving, when the slit blade cassette 5 is detachable and the slit blade cassette 5 is removed, both outer blades are used. A closing means 6 for closing the space between the net blade heads 4 and 4 is provided.

In the reciprocating electric shaver according to a second aspect of the present invention, in addition to the configuration of the first aspect, a separate member 7 is detachably provided as the closing means 6 instead of the slit blade cassette 5. It is characterized by the following.

A reciprocating electric shaver according to a third aspect of the present invention is characterized in that, in addition to the configuration of the second aspect, the skin contact surface 7a of the separate member 7 is formed into a flat surface 8. .

A reciprocating electric shaver according to a fourth aspect of the present invention is characterized in that, in addition to the configuration of the second aspect, an elastomer 9 is provided on the skin contact surface 7a of the separate member 7. is there.

A reciprocating electric shaver according to a fifth aspect of the present invention, in addition to the configuration of the second aspect, further comprises an elastomer 9 provided on the skin contact surface 7a of the separate member 7 in parallel with the longitudinal direction of the skin contact surface 7a. The fins 10 are provided upright.

A reciprocating electric shaver according to a sixth aspect of the present invention is characterized in that, in addition to the configuration of the second aspect, the separate member 6 can be floated.

According to a seventh aspect of the present invention, in addition to the configuration of the first aspect, in addition to the configuration of the first aspect, the closing plate 6 includes a spring-biased shield plate 39 on both outer side of the net blade heads 4 and 4. Are provided in the net outer blade cassettes 11 and 11 including the above.

The reciprocating electric shaver according to claim 8 of the present invention is characterized in that the slit blade cassette 5 itself is provided with a detachable button portion 12 in addition to the structure of claim 1 or 7. is there.

A reciprocating electric shaver according to a ninth aspect of the present invention has the structure of any of the second to sixth aspects,
The detachable button portion 12 is provided on the separate member 7 itself.

A reciprocating electric shaver according to a tenth aspect of the present invention is characterized in that, in addition to any one of the first to seventh aspects, the slit blade head 3 is provided from above the slit blade head 3.
A detachable slit blade head cover 13 is provided to cover the slit blade head.

According to an eleventh aspect of the present invention, in addition to the configuration of the tenth aspect, the position of the slit blade head 3 is lowered when the slit blade head cover 13 is mounted. It is characterized by the following.

[0016]

FIG. 3 shows an example of the embodiment of the present invention.
This will be described with reference to FIGS.

As shown in FIGS. 3 and 4, the reciprocating electric shaver of this embodiment comprises an outer blade cassette 14 and a main body 1. The outer blade cassette 14 holds the blade head 2 in the longitudinal direction of the upper end.
Is a cassette-shaped part formed in three rows.
Among the blade heads 2 in the row, a slit blade head 3 for rough shaving is formed in the center, and a net blade head 4 for finishing shaving is formed on both outer sides. The three rows of blade heads 2 can be floated vertically. A linear motor 15 and a rechargeable battery 16 are provided in the main body 1, and a power switch 30 is provided on the surface of the grip 1 a of the main body 1. An outer cutter frame 18 is formed on the outer periphery of the upper end 1b of the main body 1 so that the outer cutter cassette 14 can be removably mounted. A linear motor 15 is provided at the center of the upper end 1b. The two movers 15a protrude and are respectively connected to the two net inner blade drivers 23.
Then, after the push-up springs 25 are respectively fitted into the shaft portions 23a in the respective net inner blade drivers 23, the upper end of each net inner blade driver 23 and the lower end of the corresponding net inner blade 22 are spring-loaded. They are connected at the receiver 26. On the other hand, the slit inner blade driver 24 is attached to one net inner blade driver 23,
When the outer blade cassette 14 is mounted on the main body 1, the outer blade cassette 14 is connected to the slit inner blade 20 via the slit inner blade joint 27 of the slit blade cassette 5 constituting the outer blade cassette 14 (FIG. 5). Then, the outer blade cassette 14 is moved to the main body 1.
When the inner blade 22 is formed in three rows at the upper end of the outer blade cassette 14, the inner surface of the net outer blade 21 which is the net blade head 4 formed on both outer sides and the net inner blade 22 are slidably contacted. And the inner surface of the slit outer blade 19, which is the slit blade head 5 formed in the center, and the slit inner blade 2
0 is in a state where it can slide freely. Then, set the power switch to O
N, the movable element 15a of the linear motor 15 reciprocates in the width direction of the main body 1, and the two net inner blade drivers 2
3, and the two net inner blades 22 and the slit inner blades 20 are reciprocated via the slit inner blade driver 24 to perform rough shaving with the slit blade head 3 and finish shaving with the net blade head 4. Will be

The structure of the outer blade cassette 14 will be described in detail with reference to FIGS. The outer cutter cassette 14 mainly includes the slit cutter cassette 5, two net outer cutter blocks 28, and a holding member 29.

As shown in FIG. 5, the slit blade cassette 5 includes a slit outer blade 19, supports 31, 32, and a slit inner blade 2.
0, is constituted by a slit inner blade joint 27. The slit outer blade 19 has a substantially inverted U-shaped cross section, is provided with slit-shaped blade holes extending to both side surfaces on the upper surface, and has four pairs of engagement portions 19 at the lower end.
a, 19b, 19c, and 19d. Support 3
Reference numerals 1 and 32 denote left-right symmetric parts,
d, 32d, outward arms 31e, 32e, and downward arms 31f, 32f.
2a, locking portions 31b, 32b, and cover pieces 31c, 3
2c is integrally formed. Inward arm 31
d and 32d and a pair of heat seal bosses 31g and 32 protruding forward and backward, respectively, on the upper portions of the outward arms 31e and 32e.
g, and 31h, 32h,
Spring receivers 31i, 32i project upward from between 1d, 32d and the outward arms 31e, 32e, and cover pieces 31c, 3 hanging from the upper ends of the outward arms 31e, 32e.
Vertical ribs 31j, 32j are formed on the inner surface of 2c, and locking portions 31 are formed on the outer side adjacent to the outward arms 31e, 32e.
b, 32b project downward, and outward arms 31e, 3b.
Spring receivers 31k and 32k project downward from below 2e, and receiving surfaces 311 and 32l are provided at the lower ends of the downward arms 31f and 32f. Cover pieces 31c, 3
Detachable buttons 31m and 32m are provided at the tip of 2c, and the cover pieces 31c and 32c and the locking portions 31b and 32b are connected by connecting ribs 31n and 32n. The slit inner blade 20 has a substantially U-shaped cross section, and the blade at the tip is bent at a horizontal angle in a direction perpendicular to the longitudinal direction of the slit inner blade 20 from both upper end portions to form a comb-shaped blade 33 and a longitudinal direction. A slit inner blade joint mounting hole 20b is provided at the bottom center. The slit inner blade joint 27 is provided in the slit inner blade mounting portion 2.
7a and a slit inner blade driver joint portion 27b, a pair of projecting walls 27c are provided on both sides in the longitudinal direction of the slit inner blade mounting portion 27a, and a projecting portion 27d and a heat seal are provided at the center in the longitudinal direction of the upper surface. The bosses 27e are alternately arranged in the longitudinal direction, and spring receivers 27f, 27f protrude downward from both longitudinal ends of the lower surface of the inner slit mounting portion 27a. The slit inner blade driver joint portion 27b includes two engaging members 27g and 27h projecting directly below the slit inner blade mounting portion 27a.
An engaging portion 27i for engaging with the slit inner blade driver 24 is formed between the g and 27h.

The slit blade cassette 5 composed of the above components is assembled in the following order. First, the slit inner blade 20 is sandwiched between a pair of projecting walls 27c disposed on both sides in the longitudinal direction of the slit inner blade driver joint 27, and the longitudinal direction of the upper surface of the slit inner blade mounting portion 27a of the slit inner blade driver joint 27 is increased. The protrusion 27d arranged at the center in the direction and the heat seal boss 27e are fitted into the slit inner blade joint mounting hole 20b arranged at the center of the longitudinal bottom of the slit inner blade 20, and the heat seal boss 27e is heat-sealed. The slit inner blade 20 is mounted on the upper surface of the slit inner blade mounting portion 27a of the slit inner blade driver joint 27. Next, after aligning the above components so that the upper surface of the slit inner blade 20 is in sliding contact with the inner surface of the slit outer blade 19, a spring projecting downward from both ends in the longitudinal direction of the slit inner blade joint 27 of the above component. The push-up springs 33 are fitted into the receivers 27f, 27f, and the support 31 and the spring receiver 31 of the support 21 are fitted.
i, 32i receive the lower ends of the push-up springs 33, 33. Next, the engaging parts 19a, 19 of the slit outer blade 19 are held between the slit outer blade 19 and the two supports 31, 32 while holding the above-mentioned components via the push-up springs 33, 33.
The heat seal bosses 31h, 31g and 32g, 32h of both supports 31, 32 are engaged with b, 19c, 19d, and heat seal is performed in this state to attach both supports 30, 31 to the slit outer blade 19. Thus, the slit blade cassette 5 is formed.

Next, the configuration of the net outer blade block 28 will be described. As shown in FIG. 6, the net outer blade block 28 includes a net outer blade cassette 34 and a float support frame 35. The net outer blade cassette 34 includes a net outer blade 21 formed of a thin metal plate and having a large number of blade holes, and a box-shaped net outer blade frame 36 having open upper and lower surfaces. The net outer blade 21 has a semicircular cross section, and forms a heat seal portion 21a continuously at both circumferential ends of the net outer blade 21. The heat sealing portion 2 is provided on the inner wall surface 36a and the outer wall surface 36b of the net outer blade frame 36.
A plurality of protrusions 36c for heat-sealing the outer blade 1a are provided.
After fitting into the hole 21b provided in 1a, heat sealing is performed to attach the net outer blade 21 to the net outer blade frame 36 to form the net outer blade cassette 34. Engagement pieces 36f, 36f protrude above the left and right side walls 36e, 36e of the net outer blade cassette 36, while engagement grooves 35b are formed on the left and right inner side walls 35a, 35a of the float support frame 35. ,
35b are provided in the vertical direction, and the net outer blade cassette 3
4 is inserted from below the float support frame 35, the engagement pieces 36f, 36f provided on the left and right side wall surfaces 36e, 36e of the net outer cutter cassette 34 and the left and right inner side walls 35 of the float support frame 35.
The net outer blade block 28 is formed by engaging the engagement grooves 35b, 35b provided in the a, 35a. At this time, a certain gap is formed between the inner surface of the one side wall 35c and the inner surfaces of the left and right outer walls 35d, 35d of the float support frame 35 and the outer peripheral surface of the net outer blade frame 36.
In addition, the lower end of the float support frame 35 projects downward from the lower end of the net outer blade frame 36. Further, the left and right outer walls 35d, 35d of the float support frame 35 and the left and right inner walls 35a, 35a are connected by engaging pieces 35e, 35e. A part 36f is provided. In addition, a penetrating slot 36d is provided in the longitudinal direction immediately below the mounting position of the heat seal portion 21a on the inner wall surface 36a and the outer wall surface 36b of the net outer blade frame 36. This is because, by assembling the net outer blade cassette 34 and the float support frame 35, even if the net outer blade cassette 34 is warped, the net outer blade 21 has no influence on the attached state,
This is for stabilizing the contact with the net inner blade 22 and ensuring good sharpness.

Next, the structure of the holding member 29 will be described. FIG.
As shown in the figure, the holding member 29 is formed on the left and right side walls 29c, 29c of the rectangular section-shaped frame portion 29a with substantially mountain-shaped holding walls 29d, 2c.
9d is a part formed continuously. At the upper edges of the front and rear side walls 29b, 29b of the frame portion 29a, approximately two V-shaped floating springs 29e are respectively provided to project upward, and the left and right side walls 29c, Spring receiving pieces 29f, 29f protrude inward from the center of the inner surface of 29c, and the float spring 29e comes into contact with the lower surface of the downward projecting portion 36g of the net outer blade frame 36 constituting the net outer blade block 28, The net outer blade block 28 is urged upward by a spring to float freely, and the spring receiving pieces 29f, 29
f is the float spring 3 in the hole of the spring receiving piece 29f, 29f.
After the locking of the floats 7, 37, the upper ends of the float springs 37, 37 are connected to both supports 31, 32 constituting the slit blade cassette 5.
The slit blade cassette 5 is received by the spring receivers 31k and 32k, and is spring-biased upward to make it floatable. A pair of vertical slits 29g, 29g having an open upper end, are formed in both holding walls 29d, 29d symmetrically in the front-rear direction.
A pair of net outer blade block retaining hooks 29h are provided at the upper end of the side wall of 9g for one vertical slit 29g. Further, both vertical slits 29g, 2 of the holding wall 29d are provided.
9g, the connecting ribs 31n, 32 of the supports 31, 32 constituting the slit blade cassette 5 are provided above the central outer surface.
n is slidably held, and the lower end side wall of the vertical groove 29i on the inner surface of the holding wall 29d is provided with the locking portions 31b, 32b of the supports 31, 32.
Is provided with a hook 29j for locking the slit blade cassette. Also, the left and right side walls 29c, 29 of the frame 29a.
At the lower end of c, hooks 29k, 2 for attaching the outer blade frame
9k, and the right and left side walls 2 of the frame portion 29a.
Push buttons 291 and 29l are provided below 9c and 29c. When the outer cutter cassette 14 is mounted on the outer cutter frame 18, the left and right push buttons 291 and 291 are pressed, and the outer cutter frame mounting hooks 29k and 29l are pressed.
k is positioned below the outer blade cassette mounting projections 18a, 18a, and then the left and right push buttons 291 are released, and the outer blade frame mounting hooks 29k, 29k are released.
To the outer blade cassette mounting projections 18a, 18a,
The outer blade cassette 14 is mounted on the outer blade frame 18. Conversely, when removing the outer cutter cassette 14 from the outer cutter frame 18, the outer cutter frame mounting hooks 29 k, 29 k and the outer cutter cassette mounting protrusions 18 a, 18 a are pressed by pressing the left and right push buttons 291, 291. Of the outer blade cassette 1 in a state where the left and right push button portions 291 and 291 are pressed.
The outer blade cassette 14 can be removed from the outer blade frame 18 by pulling the upper blade 4 upward.

Next, the holding member 2 of the net outer blade block 28
9 will be described with reference to FIG. The attachment of the net outer cutter block 28 to the holding member 29 is performed by the left and right outer walls 35 of the float support frame 35 constituting the net outer cutter block 28.
This is performed by inserting an engagement piece 35e connecting the left and right inner walls 35a and 35d into the vertical slit 29g of the holding member 29. At this time, the hook 29h for retaining the net outer blade block of the holding member 29 is attached to the engagement piece 35.
It is located in the vertical hole 35g above e, and serves to prevent the engagement piece 35e from coming off. Further, each of the pair of protrusions 36f provided on the opposing surfaces of the left and right outer walls 35d and the left and right inner walls 35a of the float support frame 35 is provided with a horizontal holding wall 29 of the vertical slit 29g.
d, and serves as a guide when the engagement piece 35e of the float support frame 35 moves up and down in the vertical slit 29g of the holding member 29. Then, one of the net outer blade blocks 28 is attached to the holding member 29 in the same manner. Thus, the engagement piece 35e of the float support frame 35 is
g, and the net outer blade block 28 in which the engaging piece 35e of the float support frame 35 is prevented from falling off by the net outer blade block retaining hook 29h of the holding member 29, the floating spring of the holding member 29 is used. 29e
The spring is biased upward by the spring, and is held so as to float freely.

Next, the holding member 29 of the slit blade cassette 5
The attachment to the device will be described with reference to FIGS. The attachment of the slit blade cassette 5 to the holding member 29 is performed by the spring supports 3 of the supports 31 and 32 constituting the slit blade cassette 28.
1k and 32k are attached to the spring receiving pieces 29f and 29 of the holding member 29.
f, and set on the upper ends of the float springs 37, 37 locked in the holes f.
n, 32n and the vertical ribs 31j, 32j provided on the inner surfaces of the cover pieces 31c, 32c, respectively.
29i, and slide into the locking portions 3 of the supports 31, 32.
Hook 2 for locking a slit blade cassette provided with 1b, 32b on the inner surface of the lower side wall of the vertical groove 29i, 29i of the holding member 29
9j and 29j. Thus, the hook 29 for locking the slit blade cassette of the holding member 29 is provided.
The slit blade cassette 5 in which the locking portions 31b and 32b of the supports 31 and 32 constituting the slit blade cassette 5 are prevented from falling out by the j and 29j, is locked in the holes of the spring receiving pieces 29f and 29f of the holding member 29. Float spring 3
The spring is biased upward by 7, 37, and is held so as to float freely. Note that the slit blade cassette 5 is
In order to remove the support members 31 and 32 from the support members 31 and 32, the user presses the removable button portions 12 (removable buttons 31m and 32m) arranged on both sides of the slit blade cassette 5.
b is the hook 2 for locking the slit blade cassette of the holding member 29.
9j, 29j, the coupling between the slit blade cassette 5 and the holding member 29 is released by the urging force of the float springs 37, 37.

By making the slit blade cassette 5 detachable as described above, in the case of shaving only a short beard without a long beard, an unnecessary slit blade head 3 can be removed. , Slit outer blade 19
Can be removed, and a smooth shave feeling with good skin contact can be obtained. Also,
The detachable button section 12 of the slit blade cassette 5 (the detachable button 31)
m, 32 m) are provided in the slit blade cassette 5 itself, so that the slit blade cassette 5 can be easily attached and detached while holding the main body 1 with one hand, and the operability can be remarkably improved. Further, the float spring 37 for urging the slit blade cassette 5 upward is attached to the spring receiving piece 29 of the holding member 29.
Since it is locked in the hole f, the float spring 37 does not come out and come off when it comes off, and it is securely connected to the spring receivers 31k, 32k of the slit blade cassette and the float springs 37, 37 when they are put on. be able to.

By the way, when the slit blade cassette 5 is detached from the holding member 29, another member 7 shown in FIGS. It is also possible to set up. These separate members 7 have the same main shape as the slit blade cassette 5, and include an engaging portion 7a, a cover piece 7b, a vertical rib 7c, a spring receiver 7d, a detachable button portion 12 (detachable button 7e), and a connecting rib 7f. Have. Also, the attachment / detachment method is the same as that of the slit blade cassette 5, so that it can be floated when worn. By replacing these separate members 7 with the slit blade cassette 5 and attaching them to the holding member 29, the gap formed between the net blade heads 4 and 4 can be closed,
It is possible to prevent the shavings accumulated in the blade head 2 from scattering outside. In addition, another member 7 shown in FIG.
That is, the skin contact surface 7a is formed into a smooth flat surface 8 without unevenness, and when shaving, another member 7 has a small frictional force against the skin that has fallen between the two net blade heads 4, 4. Because it can be slid, it enables a smooth shaving taste. Further, another member 7 shown in FIG. 12 is one in which the elastomers 9 are arranged at equal intervals on the skin contact surface 7a in a direction orthogonal to the longitudinal direction of the skin contact surface 7a. It is possible to increase the frictional force with the skin that has fallen between the two net blade heads 4 and 4, so that the skin can be stretched and the two net blade heads 4 and 4 can shave shorter. It is. Another member 7 shown in FIG. 13 is a member in which fins 10 of elastomer 9 are erected radially on skin contact surface 7a in parallel with the longitudinal direction of skin contact surface 7a. By means of 10, it is possible to raise the beard of the skin that has fallen between the two net blade heads 4 and 4, so that it is possible to introduce the lying beard into the blade holes of the two net blade heads 4 and 4. Since the separate members 7 are mounted on the holding member 29 so as to float freely, in any case, the unevenness of the skin can be followed, and a smooth shaving taste can be achieved. Thus, the reciprocating electric shaver of this example is
With the slit blade cassette 5 attached as it is, a normal three-head shaving can be performed.
Is replaced with another member 7 according to the application, the form of the blade head 2 most suitable for the user's shaving method can be selected, and the shaving with a good touch against the skin can be performed. Further, as described above, by attaching the separate member 7, the gap between the net blade heads 4 and 4 on both outer sides can be closed, so that the whiskers accumulated in the blade head 2 can be prevented from scattering. Further, by mounting the separate member 7, the rattle of the net blade heads 4, 4 on both outer sides can be eliminated,
The sharpness of the net blade head 4 can be stabilized.

Next, another example of the embodiment of the present invention is shown in FIG.
This will be described with reference to FIGS. In this example, a detachable slit blade head cover 13 that covers the slit blade head 3 from above the slit blade head 3 is provided, and the slit blade head cover 13 and the slit blade head cover 13 are locked. The cover pieces 5a at both ends of the slit blade cassette 5 (the cover pieces 31c, 3 of the supports 31, 32).
Other configurations except for 2c) are substantially the same as those in the above-described example, and therefore description thereof will be omitted (38 in FIG. 15 is a skin stretching member). The slit blade head cover 13 is the slit outer blade 1
9, a substantially U-shaped member that covers the entire surface of the slit outer blade 19 of the slit blade cassette 5 and the entire surface excluding the attaching / detaching button portion 12 of the cover pieces 5a at both ends. Engagement projections 13b for engaging with engagement holes 5b formed in the cover pieces 5a at both ends of the slit blade cassette 5 are provided on the back surface of the cover pieces 13a at both ends. By pressing the slit blade head cover 13 against the slit blade cassette 5 from above while the slit blade cassette 5 is mounted on the holding member 29, the cover pieces 13a at both ends of the slit blade head cover 13 are formed. The engaging projections 13b provided on the back surface engage with the engaging holes 5b provided on the cover pieces 5a at both ends of the slit blade cassette 5, so that the slit outer blade 19 is covered with the slit blade head cover 13. . When removing the slit blade head cover 13 from the slit blade cassette 5, the slit blade head cover 13 is pressed by gently pushing the detachable button portion 12 below the cover pieces 5 a on both sides of the slit blade cassette 5 inward. It can be removed from the slit blade cassette 5. As described above, in this example, since the slit blade head 3 can be covered only from the three-head state with a simple configuration, the rough outer skin of the slit outer blade 19 can be easily removed. , Can provide a smooth feeling of skin contact.

Next, another example of the embodiment of the present invention is shown in FIG.
17 through FIG. In this example, the position of the slit blade head 3 is lowered when the cover 13 for the slit blade head is attached, and the other configurations except for the configuration for locking the cover 13 for the slit blade head are the same as those of the first example. The description is omitted because they are substantially the same. The slit blade head cover 13 is a member having substantially the same width as the slit outer blade 19 and having a substantially inverted U-shape as in the above example, but the cover piece 13a is longer than that in the above example, An engagement hole 29m provided immediately above the push button portion 29l on both lower sides and an engagement protrusion 13b provided on the back surface of the cover piece 13a can be engaged. Note that, in this example, the cover piece 5a of the slit blade cassette 5 is different from the above-mentioned example, and the surface is a smooth surface without the pushbuttons 12 for detachment. This allows the slit blade cassette 5 to be attached and detached. Then, with the slit blade cassette 5 mounted on the holding member 29,
By pressing the slit blade head cover 13 against the slit blade cassette 5 from above, the engagement projections 13 on the back surface of the cover pieces 13a at both ends of the slit blade head cover 13 are formed.
b and the engaging holes 29m on the left and right sides of the holding member 29 are engaged, and the slit outer blade 19 is
And the slit blade cassette 5 is fixed in a state of being pressed downward by the engagement of the slit blade head cover 13 with the holding member 29. At this time, the upper surface of the slit blade head cover 13 is designed to be at least lower than the upper surfaces of the net blade heads 4 and 4 on both outer sides. Next, when removing the slit blade head cover 13 from the holding member 29, the slit blade head cover 13 is removed from the holding member 29 by lightly pressing the push buttons 291 on the lower left and right sides of the holding member 29 inward. Can be. With such a configuration, even when the slit blade head cover 13 is attached, the positions of the upper surfaces of the net blade heads 4 and 4 on both outer sides are relatively to the upper surface of the slit blade head cover 13. Because it is located above,
The net blade heads 4, 4 on both outer sides can be reliably applied to the skin without being disturbed by the center slit blade head cover 13, thereby enabling shaving with a good skin contact feeling.

Next, another embodiment of the present invention will be described with reference to FIGS. In this example, when the slit blade cassette 5 is removed, the closing means 6 for closing the gap formed between the both outer net blade heads 4 and 4 is provided on the outer net cassettes 11 and 11. Since the configuration other than the net outer blade cassette 11 and the closing means 6 is substantially the same as that of the first example, description thereof will be omitted. Hereinafter, the configurations of the net outer blade cassette 11 and the closing means 6 will be described. At the lower end of the inner side wall 36h of the net outer blade frame 36 constituting the net outer blade cassette 11, two shield plate attaching portions 36j having engaging projections 36i on the left and right are provided. On the other hand, the flat shielding plate 3 has a length substantially equal to the width of the slit outer blade 19 and a width substantially half the depth dimension of the slit outer blade 19.
9 at the upper end of the shield plate mounting portion 36j.
i is provided with an engagement groove portion 39b with which the shielding plate 3 can be engaged.
A notch 39c is provided in the center of the lower end of the flat plate portion 9a (the notch 39c is for inserting the upper end 24a of the slit inner blade driver 24). Then, the engagement protrusion 3 of the shielding plate attachment portion 36j of the net outer blade frame 36 is formed.
After engaging the engaging groove 39b of the shielding plate 39 with 6i,
The crank part 40 a of the rotary spring 40 is attached to the inner surface of the inner wall 36 h of the net outer cutter frame 36, and the spring part 40 b of the rotary spring 40 is inserted into the back surface 39 e of the shielding plate 39. Thereby, the shielding plate 39 is rotatably attached to the lower end of the inner wall 36 h of the net outer blade frame 36, and the spring portion 4 of the rotary spring 40 is
By 0b, the shield plate 39 is raised upward at a right angle, and a spring is biased against a force for folding the shielding plate 39 downward. Thereafter, the net outer blade cassette 11 to which the shielding plate 39 is attached is attached to the float support frame 35 to form the net outer blade block 28, and then attached to the holding member 29. At this time, both net blade heads 4, 4 are shielded by shield plates 39, 39 attached to both outer net outer blade cassettes 11, 11.
The gap formed therebetween is closed. However, both shielding plates 3
The slit inner blade driver 24 is formed through a rectangular hole formed by the cutouts 39c provided in the center of the lower ends of the slits 9 and 39.
The upper end 24a of the blade head 2 protrudes, but the gap between the rectangular hole and the upper end 24 of the slit inner blade driver 24 is designed to be a small amount, so that the shavings in the blade head 2 may go outside. Can be suppressed as much as possible. Next, the slit blade cassette 5 is mounted on the holding member 29. At this time, when trying to insert the slit blade cassette 5 into the gap between the two net blade heads 4, first, the support members 31,
32 receiving surfaces 31l, 32l are double net blade heads 4, 4
Flat part 3 of both shielding plates 39, 39 closing the gap between them
9a and 39a. The corners of the receiving surfaces 311 and 32l of the supports 31 and 32 are rounded, and the depth dimension is the surface of the shielding plates 39 and 39 when the shielding plates 39 and 39 are completely folded downward. The dimension is slightly smaller than the length between 39d. When the slit blade cassette 5 is further inserted downward, the support 31, 31
The receiving surfaces 31l, 32l of the 32 push the two shielding plates 39, 39 downward against the urging of the rotary spring 40, and open.
The receiving surfaces 31l and 32l of the supports 31 and 32 are
When it is lowered to the mounting position of 9, 39, the support 31, 31
Due to the depth dimension of the receiving surfaces 31l, 32l of the 32, the two shielding plates 39, 39 are completely folded downward. And finally, the slit inner blade joint 2 constituting the slit blade cassette 5
7 engages with the slit inner blade driver 24,
The holding portions 31b and 32b of the supports 31 and 32 are
9 are locked by hooks 29j, 29j for locking the slit blade cassette provided on the inner surface of the lower end side wall of the vertical grooves 29i, 29i.
Attachment of the slit blade cassette 5 to the holding member 29 is completed. As described above, in the present embodiment, the closing means 6 for closing the gap between the two net blade heads 4 and 4 with the shielding plate 39 and the rotary spring 40 is constituted, and the closing means 6 can be realized with a simple structure. is there.

[0030]

According to the first aspect of the present invention, by making the slit blade cassette detachable,
In the case of shaving only a short beard without a long beard, an unnecessary slit blade head can be removed, and the rugged feel of the slit blade head, that is, the slit outer blade can be removed. A good shaving feeling can be obtained. In addition, since the load current can be reduced by removing the slit blade cassette, it is possible to use the battery for a long time with one charge. Further, by closing the gap between the net blade heads on both outer sides, it is possible to prevent the whiskers accumulated in the blade head from scattering outside.

According to the second aspect of the present invention, in addition to the effect of the first aspect, a normal three-head shaving can be performed with the slit blade cassette mounted as it is. By replacing the slit blade cassette with another member depending on the application, the form of the blade head most suitable for the user's shaving method can be selected, and the shaving with a good touch to the skin can be performed. In addition, since the gap between the net blade heads on both outer sides can be closed by attaching the separate member, it is possible to prevent the whiskers accumulated in the blade head from scattering. Furthermore, the rattling of the net blade head can be eliminated by mounting a separate member, so that the sharpness of the net blade head can be stabilized.

According to the third aspect of the present invention, in addition to the effect of the second aspect, at the time of shaving, another member is applied to the skin which has fallen between the two net blade heads. Since it is possible to slide with a small frictional force, a smooth shaving taste is possible.

According to the invention of claim 4 of the present invention, in addition to the effect of the invention of claim 2, the friction between the separate member and the skin dropped between both net blade heads during shaving is provided. Since the force can be increased, the skin can be stretched, and the beard can be shaved shorter with the double-net blade head.

According to the fifth aspect of the present invention, in addition to the effect of the second aspect, the skin whiskers fall between the two net blade heads due to the elastomer fins during shaving. Therefore, it is possible to introduce the lying beard into the blade holes of both net blade heads.

According to the sixth aspect of the present invention, in addition to the effects of the second aspect, it is possible to follow irregularities on the skin and to shave smoothly. Becomes possible.

According to the seventh aspect of the present invention, in addition to the effect of the first aspect, the closing means of the first aspect can be realized with a simple structure.

According to the invention of claim 8 of the present invention, in addition to the effects of the invention of claim 1 or 7, the attachment and detachment of the slit blade cassette can be easily performed with the main body held by one hand. The operability can be significantly improved.

According to the ninth aspect of the present invention, in addition to the effects of the second aspect, the attachment and detachment of the separate member can be performed by holding the main body with one hand. It can be easily performed and operability can be significantly improved.

According to the tenth aspect of the present invention, in addition to the effects of the first, seventh, and eighth aspects, the slit blade head is changed from a three-head state by a simple configuration. Since only the outer edge of the slit can be covered, it is possible to easily remove the rough skin contact feeling of the slit outer blade and to provide a smooth skin contact feeling.

According to the eleventh aspect of the present invention, in addition to the effects of the tenth aspect, even when the slit blade head cover is attached, the upper surface of the slit blade head cover is provided. On the other hand, since the positions of the upper surfaces of the outer and outer net blade heads are located relatively upward, the outer and outer net blade heads are reliably applied to the skin without being disturbed by the central slit blade head cover. Can be shaved with a good touch on the skin.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention,
(A) is a longitudinal sectional view of the upper part of the reciprocating electric shaver when the slit blade cassette is mounted, and (b) is a longitudinal sectional view of the upper part of the reciprocating electric shaver when the slit blade cassette is removed.

FIG. 2 is an exploded perspective view of the same closing means.

FIG. 3 illustrates another example of the embodiment of the present invention, and is a longitudinal sectional view of a reciprocating electric shaver.

FIG. 4 is an exploded perspective view of the reciprocating electric shaver according to the first embodiment.

FIG. 5 is an exploded perspective view of the same slit blade cassette.

FIG. 6 is an exploded perspective view of the same net outer blade block.

FIG. 7 is a perspective view of a net outer blade block and a holding member according to the third embodiment.

FIG. 8 is a perspective view of the outer blade cassette with the slit blade cassette removed therefrom.

FIG. 9A is a top view of the slit blade cassette,
(B) is a side view (partial sectional view) of the slit blade cassette and the holding member when the slit blade cassette is mounted on the holding member.

FIG. 10 is a lateral side view (partially sectional view) of the slit blade cassette and the holding member when the slit blade cassette is removed from the holding member.

FIG. 11 is a perspective view of another member of the above.

FIG. 12 is a perspective view of another member of the above.

FIG. 13 is a perspective view of another member of the above.

FIG. 14 shows another example of the embodiment of the present invention, and is a perspective view of a slit blade head cover, a slit blade cassette, and a holding member.

FIG. 15 is a vertical sectional view of the upper part of the reciprocating electric shaver when the above-mentioned slit blade head cover is mounted.

FIG. 16 shows another example of the embodiment of the present invention, and is a perspective view of a slit blade head cover, a slit blade cassette, and a holding member.

FIG. 17 is a longitudinal sectional view of the upper part of the reciprocating electric shaver when the above-mentioned slit blade cover is mounted.

[Explanation of symbols]

 Reference Signs List 2 blade head 3 slit blade head 4 net blade head 5 slit blade cassette 6 closing means 7 separate member 7a skin contact surface 8 flat surface 9 elastomer 10 fin 11 net outer blade cassette 12 detachable button section 13 cover for slit blade head 39 shielding plate

Claims (11)

[Claims] 1. Each of the blade heads has three blade heads, each of which can float freely. The center blade head is a slit blade head for rough shaving, and the outer blade heads are net blade heads for finish shaving. In a reciprocating electric shaver, a slit blade cassette is detachable, and a closing means for closing a gap between both outer side net blade heads when the slit blade cassette is removed is provided. 2. A reciprocating electric shaver according to claim 1, wherein another member is detachably provided as said closing means in place of said slit blade cassette. 3. A reciprocating electric shaver according to claim 2, wherein the skin contact surface of said separate member is formed flat. 4. A reciprocating electric shaver according to claim 2, wherein an elastomer is provided on a skin contact surface of said separate member. 5. The reciprocating electric shaver according to claim 2, wherein an elastomeric fin is provided upright on a skin contact surface of said separate member in parallel with a longitudinal direction of the skin contact surface. 6. A reciprocating electric shaver according to claim 2, wherein said separate member is floatable. 7. The reciprocating electric shaver according to claim 1, wherein a shielding plate urged by a spring is provided as a closing means on a net outer blade cassette including both outer side net blade heads. 8. The reciprocating electric shaver according to claim 1, wherein a detachable button portion is provided on the slit blade cassette itself. 9. The reciprocating electric shaver according to claim 2, wherein a detachable button portion is provided on the separate member itself. 10. The reciprocating electric shaver according to claim 1, further comprising a detachable slit blade head cover for covering the slit blade from above the slit blade head. 11. The reciprocating electric shaver according to claim 10, wherein the position of the slit blade head is lowered when the cover for the slit blade head is mounted.