JP3509235B2 - 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 in which a plurality of blades are independently supported so as to be floatable vertically.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application No. 4-10332
No. 8 discloses a reciprocating electric shaver in which a plurality of blades are independently supported on the upper end of a main body so as to be freely floatable in the vertical direction. In this type of reciprocating electric shaver, as shown in FIG. 22, the main blade M for finishing is floatably attached to the drive elements 20a, 20b of the motor, and the drive elements 20a, 20b.
A connecting member 70 is attached to one of the connecting members 20b, and a driving piece 70a provided on the connecting member 70 is engaged with a recess 71 provided on the trimmer blade T for rough cutting from below to reciprocally drive integrally with the driver 20. The driving force is transmitted from the driving piece 70a of 70 to the trimmer blade T. And
For example, when the main blade M moves downward by a predetermined amount or more, the convex portion 72 of the main blade M abuts the lower end of the long hole 73 of the trimmer blade T, so that the trimmer blade T and the main blades M on both sides are separated from each other. Are engaged and integrated in the middle of the downward float, and the blades M and T can be integrally floated downward. Incidentally, FIG.
80 in 2 is a compression coil spring.

[0003]

However, in the prior art,
Since the connecting member 70 is formed integrally with the driver element 20, the connecting member 70 is fixed in the float direction, so there is a problem that the float amount of the main blade M cannot be increased.
That is, it is necessary to increase the floats of the main blades M on both sides in order to follow the blades M and T on the deep uneven surface of the skin, but they are fixed in order to increase the float amount of the main blades M. When the connecting member 70 is lowered downward, the vertical gap between the driving piece 70a of the connecting member 70 and the concave portion 71 of the central trimmer blade T becomes large, and the engagement margin between the driving piece 70a and the concave portion 71 decreases. A rattling noise is generated, or the distance between the engagement position of the drive piece 70a and the recess 71 and the central cutting edge of the trimmer blade T becomes large, and the sharpness becomes poor due to the twisting due to the reciprocating drive, and the load is increased. There is a problem of increase in the number of driving, and further, the recess 71 of the central trimmer blade T and the drive
Since the engagement allowance with the piece 70a in the thickness direction is thin, twisting occurs due to reciprocating drive, and the sharpness becomes worse. As a result, conventionally, each blade in a portion where the skin is greatly inclined or a portion where the skin has a deep depression is formed. It is not possible to correspond to the follow of M and T,
There was a problem that left unshaving occurred.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to increase the amount of float so that each blade follows a large slope or deep dent of the skin, and the engagement margin is increased. (EN) Provided is a reciprocating electric razor which is large in size to suppress rattling at the time of connection and has low noise, and further prevents twisting of a movable blade at the time of reciprocating driving to have a low load, and which has good sharpness.

[0005]

In order to solve the above-mentioned problems, the present invention provides a reciprocating electric shaver in which a plurality of blades 1A and 1B are independently supported on the upper end of a main body 8 so as to be floatable vertically. , driving one of the blades 1A Rutotomoni coupled to freely vertically float relative to the driver element 20 of the motor 23
A connecting drive element 21 to, the consolidated driver elements 21 provided on the transmission portion 34 is integrally for driving other blade 1B, transmitting unit 34 and the other blade 1B is vertically above a predetermined amount It is characterized in that it can float freely up and down following the other blade 1B when it moves.

It is preferable that one blade 1A attached to the connecting driver 21 is arranged on the center side, and the other blades 1B driven by the transmission portion 34 are arranged on both sides of the one blade 1A, respectively. Further, it is preferable that one blade 1A is a main blade M for finishing and the other blade 1B is a trimmer blade T for rough cutting.

Further, it is preferable to dispose trimmer blades T on both sides of the main blade M, respectively. Further, the engaging portion 100 between the other blade 1B and the transmission portion 34 is provided on the center side in the reciprocating direction X of the other blade 1B, and the float portion 101 for floating the other blade 1B in the vertical direction is the other blade 1B. It is preferable that they are arranged side by side in the reciprocating direction X of.

[0008]

According to the present invention, the connecting driver 21 is connected to the driver 20 of the motor 23 so as to be freely floated up and down. One blade 1A is attached to the connecting driver 21 and the connecting driver 21 is attached. Is integrally provided with a transmission portion 34 for driving the other blade 1B, and when the other blade 1B moves in the vertical direction by a predetermined amount or more, the transmission portion 34 follows the other blade 1B and is allowed to float vertically. Therefore, the transmission portion 34 interlocks with the other blade 1B in the middle of the float, and the interlocking drive element 21 that can freely float up and down interlocks with this and floats with the one blade 1A. Therefore, the float amount should be large. Therefore, it is possible to follow large unevenness and inclination of the skin surface, and it is possible to reduce transmission noise and drive load and improve sharpness.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The reciprocating electric razor used in this embodiment is
As shown in FIG. 1, one blade 1A is provided on both sides of the other blade 1B.
The blades 1A are arranged side by side, and one of the blades 1A is an outer blade 1 formed as a net blade having a large number of blade holes, and a large number of inner blades 2 are planted on the inner blade base 3. The main blade M for finishing is provided with an inner blade 4, and the other blade 1B is made up of a trimmer blade T for rough cutting having a fixed blade 6 in the shape of a comb blade and a movable blade 7. The trimmer blades T and the trimmer blades T are independently supported so as to be freely floatable in the vertical direction. In FIG. 1, 8 is the main body, A ₁ is the housing, and A ₂
Is a battery cover, A ₃ is a motor case, and S is a switch.

First, as shown in FIG. 6, the outer blade 1 of the main blade M is not only curved in the direction Y orthogonal to the reciprocating direction X of the inner blade 4, but also the reciprocating direction of the inner blade 4. It is also curved at X, and is attached to the outer blade frame 9 formed in a rectangular frame shape. This mounting is performed by inserting a plurality of mounting bosses 10 projecting from the outer blade frame 9 into mounting holes 11 provided on both sides of the outer blade 1.

The outer blade frame 9 to which the outer blade 1 is attached in this way
Mounted on the blade frame 12. This blade frame 12
As shown in FIG. 10, is formed in a vertically elongated rectangular tube shape, and has locking projections 13 on inner wall surfaces at both ends in the longitudinal direction, and stoppers located below the locking projections 13. 14 and. Then, the outer blade frame 9 having the elastic pieces 15 at both ends in the longitudinal direction and the flat surfaces 16 on the upper surfaces of both ends is pushed from the lower side of the blade frame 12, whereby the tip of the elastic piece 15 of the outer blade frame 9 is pushed. Is the stopper 14
The outer blade frame 9 is attached to the blade frame 12 so as to be freely floatable without rattling.

On the other hand, in the inner blade 4 of the main blade M, a large number of inner blades 2 are arranged in parallel on the upper surface of the inner blade base 3 (FIG. 6). As shown in, each inner blade 2 is ground so as to contact a curved inner surface R ₁ that is curved along the reciprocating direction X of the outer blade 1, and contacts the inner surface of the outer blade 1. The inner blade 4 is reciprocally driven by the driver 20 and the connecting driver 21. A boss 18 is projectingly provided on a side surface of the outer cutter frame 9 , and the boss 18 is inserted into an engagement groove 65 provided in a trimmer base 35 described later so that the boss 18 is engaged when the trimmer blade T floats. The main blade M and the trimmer blade T can be integrally floated by engaging with the upper end of the mating groove 65. Reference numeral 17 in FIG. 6 is a finger hooking protrusion for facilitating the removal of the outer cutter frame 9, and is provided on the side opposite to the boss 18.

As shown in FIG. 7, the driver element 20 is swingable in the reciprocating direction X by axially supporting a part of the driver element 20 in the up-down direction in the vertical direction. At the same time, the eccentric shaft 25 attached to the output shaft 24 of the motor 23 is connected to the cam groove 27 recessed in the lower end surface of the driver 20 via the bearing 26, so that the driver 20
Oscillates around the pin 22 as the motor 23 rotates.

A connecting driver 21 is connected to the upper end of the driver 20. Both side surfaces of the connecting driver 21 (each blade M, T
Hook holes 30 are formed on both sides of the reciprocating direction X of the connection driver 2 by engaging the hooks 28 protruding from the driver 20 in the hook holes 30 in the vertical direction.
1 is vertically floatably connected to the upper end portion of the driver 20, and a compression coil spring 29 for constantly urging the connecting driver 21 upward is housed in the connecting driver 21. Further, a cylindrical hole 33a is formed at the upper end of the connecting driver 21, and the spherical connecting boss 31 protruding from the inner blade base 3 is inserted into the hole 33a of the connecting driver 21 from above. In this state, the hook 33 provided on the upper end of the connecting driver 21 is locked to the connecting boss 31, so that the connecting driver 21 is connected to the driver 20 in a retaining state. Is transmitted to the inner blade 4 through the connection driver 21 to reciprocate the inner blade 4. Further, rib-shaped transmission portions 34, 3 for driving a trimmer blade T, which will be described later, are provided on both end surfaces of the coupling driver 21 (both surfaces in a direction Y orthogonal to the reciprocating direction X of the blades M, T).
4 are integrally projected, and the transmission portion 34 follows the trimmer blade T when the trimmer blade T moves in the vertical direction by a predetermined amount or more, as will be described later. Is moved up and down together with the main blade M.

The inner blade 4 of the main blade M thus constructed is
When the motor 23 is rotated, it reciprocates in an arcuate locus along the inner surface of the outer cutter 1. In order to make the reciprocating motion of the inner cutter 4 smooth, in this embodiment, as shown in FIG. As shown in, when the radius of the curved inner surface along the reciprocating direction X of the outer blade 1 is R ₁ and the driving radius of the inner blade 4 is D ₁ , R ₁ >
The relationship of D ₁ is established. That is, the distance from the pin 22 supporting the driver 20 to the blade tip portion of the central portion of the inner blade 4 is set so as to increase toward both ends, whereby the inner blade 4 is moved in the reciprocating direction X thereof. The spring urging force received from the compression coil spring 29 becomes smaller toward both ends of the, and the possibility that the outer blade 1 is caught is reduced.

In addition, in this embodiment, when the driving force from the connecting driver 21 is transmitted to the inner blade 4 through the connecting boss 31, the inner blade on the one end a side of the contact portion between the inner blade 4 and the outer blade 1 is connected. Although the reaction force of 4 pushing the outer blade 1 is large with respect to the b side, the difference in the reaction force at this time is that the distance B between the inner blades 2 located at both ends of the inner blade 4 and the driving force are It is proportional to the ratio H / B with the height H from the drive point transmitted to the inner blade 4 to the tip of the inner blade 2 located at the end. That is, when the pushing-up force of the compression coil spring 29 is P, the reaction force applied to the a side is P / 2 + HF / B, and the reaction force applied to the b side is P / 2−H.
Since it is F / B, the difference between a and b is 2HF / B, and when this value is large, the inner blade 4 is easily lifted with respect to the outer blade 1, and the outer blades 1 at both ends of the inner blade 4 are easily lifted. The difference in the degree of adhesion with For this reason, here, the point where the driving force is received from the driving element 20 in the connecting boss 31 so that the value of H / B is 0.3 or less is determined by the inner blade 4 attached to the driving element 20. The value of H is made smaller by arranging it above the joining portion 32, thereby preventing the inner blade 4 from rising from the outer blade 1 and ensuring the degree of adhesion between the outer blade 1 and the inner blade 4. I am doing it. in this way,
The inner blade 4 is in close contact with the outer blade 1, and in order to secure the sharpness, the connection driver 21 is provided on the driver 20 so as to be floatable up and down,
Since the driving force is constantly applied to the connecting boss 31 via the connecting driver 21, the close contact between the inner blade 4 and the outer blade 1 can be ensured even during the float. It should be noted that the compression coil spring 29 does not use the connection driver 21 to connect the connection boss 3 of the inner blade 4.
1 may be directly pressed, and in this case, the same effect can be obtained.

Next, a pair of trimmer blades T arranged on both sides of the main blade M will be described. As shown in FIG. 8, the trimmer blade T includes a trimmer base 35, a fixed blade 6 fixed to the curved upper surface of the trimmer base 35 by fitting with a fitting protrusion 36, and the fixed blade 6. The movable blade 7 is arranged on the upper surface side of 6 and is slidably guided by the fitting protrusion 36, a pressing spring 37 for pressing the movable blade 7 toward the fixed blade 6, and a cover 38. Presser spring 3
7, the vertical flat plate portion 39 is attached to the cover 38 by engagement with the spring stop projection 40, and when the cover 38 is attached to the trimmer base 35 by the hook 41, the vertical flat plate portion 39 is attached to the cover 38 and the trimmer base. The plurality of spring pieces 42 are brought into contact with the upper surface of the movable blade 7 while being sandwiched and fixed between the spring pieces 42 and 35.

The trimmer base 35, as shown in FIG.
The blade frame is provided with a pair of locking pieces 43, 43 facing downward, a pair of hooks 44, 44, and a flat plate portion 46 supported by a pair of thin elastic pieces 45, 45 at the center. The locking piece 43 and the hook 44 are inserted into the two pairs of locking portions 47, 48 formed on the inner wall surface in the lateral direction in FIG. 12 (FIG. 10). Here, the hook 44 is prevented from coming off in the upward direction, and the coming off is prevented by applying the locking portion 47 of the blade frame 12 to the wall of the upper end of the locking piece 43. The spring 49 for floating the trimmer blade T includes a protrusion 50 provided on the trimmer base 35 and a protrusion 51 provided on the blade frame 12.
Respectively, so that the trimmer base 35 can float. At this time, in order to make the float of the trimmer base 35 smooth, a slight gap is provided between the trimmer base 35 and the blade frame 12, and the protrusion 52 is provided on the locking piece 43 of the trimmer base 35. It is provided to reduce the sliding resistance when floating. Further, the boss 53 provided on the trimmer base 35 is slidably engaged in the locking groove 54 provided on the blade frame 12 in the vertical direction,
This prevents vibration due to rattling in the longitudinal direction (reciprocating direction X), and also serves as a rotary shaft for independently floating the both ends of the trimmer blade T in the longitudinal direction described later. The boss 53 provided on the trimmer base 35
The boss 53a provided below is for restricting the rotation when the longitudinal ends of the trimmer blade T are independently floated with the boss 53a as a rotation axis.

Further, the trimmer driver 55 for reciprocating the movable blade 7 has the upper end portion of the trimmer base 35.
Slot 56 provided in the blade and slot 57 provided in the fixed blade 6
Is engaged with the square hole 58 of the movable blade 7 via. On the other hand, the hook 59 provided on the flat plate portion 46 on the lower side of the trimmer base 35 is connected to the hole portion 60 provided on the trimmer driver 55 and can swing about the engaging portion with the movable blade 7. When the thin elastic piece 45 formed in the U-shape is incorporated into the main body 8 at the time of attachment / detachment, the transmission portion 34 of the connection driver 21 described later
It is positioned so that it can be easily engaged with.
The hook 61 provided on the surface of the trimmer driver 55 on the side of the trimmer base 35 is engaged with the elongated hole 62 provided at the center of the trimmer base 35. This is the trimmer driver 55. Has a function of preventing the trimmer driver 55 from coming off from the square hole 58 provided in the movable blade 7 when the blade moves downward.

The trimmer base 3 of the trimmer driver 55
5, a long groove 64 elongated in the up-down direction is provided on the surface opposite to the surface attached to 5, and the transmission portion 34 of the connecting driver 21 is vertically slidable and detachable in the long groove 64. When the connecting driver 21 swings, the trimmer driver 55 also swings in the same direction, so that the fixed blade 6 formed in a comb-like shape also becomes comb-shaped. The movable blade 7 that is formed is reciprocally oscillated, so that the amplitude change during float is reduced. Here, the drive transmission position (hereinafter, referred to as the following, of the transmission portion 34 provided integrally with the connection drive element 21 to the trimmer drive element 55).
It is called "engagement portion 100". ) Is set between the flat plate portion 46 which is mounted a square hole 58 and the thin elastic pieces 45 of the movable blade 7
Since the al, trimmer drive element 55 is not twisted in the reciprocating, no generation of rattle, but no decrease in amplitude. Further, by making the engagement allowance in the depth direction between the transmission portion 34 of the coupling driver 21 and the long groove 64 of the trimmer driver 55 as large as possible, the trimmer driver 55 is less likely to be twisted and is vertically moved. By making the engagement margin long, the structure can reduce the noise caused by the rattling at the time of driving. Further, as in the case of the main blade M, in order to improve the close contact of the blades of the trimmer blade T, for example, the radius of the curved inner surface along the reciprocating direction X of the movable blade 7 is set to R ₂ (FIG. 4) and the fixed blade 6 is driven. When the radius is D ₂ (Fig. 2),
The relationship is R ₂ > D ₂ .

As described above, the trimmer driver 55 is connected to the trimmer base 35, and the engagement groove 65 provided in the trimmer base 35 enables a large float in the vertical direction and reciprocates the movable blade 7. Since the point of transmission is located near the vibration surface with the fixed blade 6, the movable blade 7 does not float,
Even if it is driven closely, there is no load, the sharpness is good, the noise is low, and since both ends of the blade in the longitudinal direction float independently, it does not depend on how to contact the skin surface, and the sharpness is the most good central portion by eliminating the shaved by hitting the skin of a shall the upper specification short.

However, when the reciprocating electric shaver having the above structure is pressed against the skin surface with a certain load and the trimmer blade T floats and moves downward by a certain amount or more, the trimmer driver 55 by the upper end of the transmitting portion 34 of the coupling drive element 21 on the upper surface of the long groove 64 hits, integrated and the major cutting edge M and trimmer blade T, further trimmer blade T
Lower, the main blade M follows the trimmer blade T and lowers,
The main blade M floats in conjunction with the trimmer blade T. As a result, the float load of the main blade M is largely changed, and a feeling of pressing against the skin is produced to improve the contact with the skin. Further, since the transmission portion 34 provided integrally with the connection driver 21 that is freely floatable is vertically floatable together with the connection driver 21, the float amount of the trimmer blade T connected to this transmission portion 34 is increased. It is possible to provide a reciprocating electric razor that can follow the large unevenness and inclination of the skin and has a sharp cut with less transmission noise and driving load.

By the way, when the fixed blade 6 and the movable blade 7 of the trimmer blade T are curved in the vibration direction, it becomes difficult to bring the movable blade 7 into close contact with the fixed blade 6 in the entire region without a gap. As shown in a), the radius of curvature of the fixed blade 6 is set smaller than that of the movable blade 7 so that the movable blade 7 can be pressed against the fixed blade 6 when assembled. It is arranged that the fixed blade 6 is in close contact with the fixed blade 7. Further, when forming the movable blade 7, as shown in FIG. 9B, the movable blade 7 is formed so as to have a convex bent shape in its cross section as in the case of the fixed blade 6 and is curved and then flushed. The lower surface is ground so that
The rigidity in the reciprocating direction X is reduced to ensure the close contact with the fixed blade 6. Further, as shown in FIG. 9 (c), the blade portion of the movable blade 7 is inclined toward the fixed blade 6 by an angle δ. Therefore, when the movable blade 7 is pressed against the fixed blade 6, Therefore, it is in close contact with the fixed blade 6, and good sharpness can be obtained.
Since the fixed blade 6 side has a convex shape in its cross section, the driving load is not increased due to the friction between the fixed blade 6 and the movable blade 7.

Further, as shown in FIGS. 12 to 18, the trimmer blade T located forward in the direction of movement floats independently of the main blade M regardless of the unevenness of the skin surface and the contacting method, and Since the fixed blade 6 and the tips of the movable blade 7 and the main blade M are arranged in a substantially straight line, the trimmer blade T roughly cuts long hair with one operation of the instrument, and then the main blade M is used. Since the hair is shaved shortly, the hair can be shaved very efficiently. At this time, the main blade M can be shaving shortly by projecting the main blade M more than the trimmer blade T and strongly hitting the main blade M. Also, when pressed against the instrument at a certain load, the boss 18 of the outer cutter frame 9 hits the upper surface of the engaging groove 65 provided on the inner surface of the trimmer base 35 as shown in FIGS. 16-18, the trimmer blade The main blade M interlocks with T and floats. At this time, the float load changes greatly, and a feeling of pressing against the skin appears and the contact with the skin is improved.

Even if the skin surface is curved in the longitudinal direction of the main blade M, both ends of the trimmer blade T and the main blade M in the longitudinal direction are independent when an instrument is applied as shown in FIGS. 19 and 20. As it floats, the gap between the trimmer blade T and the main blade M on the skin surface is eliminated, and the main blade M and the trimmer blade T are always on the skin surface.
Since it comes into close contact, it is possible to remove hair without leaving a shave. Further, since the transmission portion 34 of the coupling driver 21 is slidably engaged in the up-down direction with the long groove 64 in the engaging portion 100 of the trimmer driver 55, the trimmer blade T and the main blade M may be in the middle of the float. Engagement margin increases, trimmer blade T
It is possible to improve the sharpness without twisting or the like, and to suppress the noise to a low level.

Further, engaging grooves 65, 65 for interlockingly floating the main blade M are formed in the reciprocating direction X of the trimmer blade T.
Are provided on both end sides of the connecting driver 21, and the engaging groove 65 and the transmitting portion 34 are arranged side by side in the reciprocating direction X by providing the engaging groove 65 on substantially the same surface as the transmitting portion 34 of the coupling driver 21. By doing so, the distance between the trimmer blades T in the direction Y orthogonal to the reciprocating direction X can be reduced. Further, by providing the spring 49 for floating the trimmer blade T on the same surface of the engagement groove 65 and the transmission portion 34, the distance between the trimmer blades T, T can be reduced.

Further, as shown in FIG. 12, when the skin surface is substantially flat, the main blade M and the trimmer blade T float at the same time by the pressing force, so that the main blade M and the trimmer blade T are in close contact with the skin surface, which is good for the skin and efficiently removes hair. can do. Further, in order to follow a deep recess as shown in FIG. 13, it is necessary to increase the float of the trimmer blade T at both ends and reduce the width of each blade T, M, T in the reciprocating direction X. Therefore, in the present invention,
The trimmer driver 55, the engaging groove 65 in the middle of the float, and the spring 49 are arranged side by side in the reciprocating direction X, and the engaging groove 65 and the transmission portion 34 of the connecting driver 21 are arranged so that twisting or the like does not occur. The engagement margin of is increased. That is, the engaging portion 100 between the trimmer driver 55 and the transmission portion 34 is located at the center of the reciprocating direction X of the trimmer blade T, and the float portion 101 that floats the trimmer blade T in the vertical direction reciprocates the trimmer blade T. Since the trimmer blades T are arranged in parallel on both sides in the moving direction X, the engaging portion 100 and the float portion 101 of the trimmer blade T are arranged in the reciprocating movement direction X of the blades. The distance in the direction Y orthogonal to the moving direction X can be set small, and the trimmer blade T can be brought into close contact with the main blade M to shorten the distance in the direction Y orthogonal to the reciprocating direction X, and as a result, the armpit or the like. Even if it is a deep dent, it can be finished short without leaving any shave by sticking multiple blades together.

Also, as shown in FIG. 14, even when the skin surface is a convex portion, the main blade M floats independently, so that the main blade M can be in close contact with the skin for efficient hair removal. Further, when it is applied at an inclination P ( Fig. 15) larger than the skin contact angle, the trimmer blade T interlocks with the main blade M to greatly float the trimmer blade T in the middle of the float, so that it follows the skin and is short without shaving. Can be finished. At this time, each blade M,
The operation of T and T is shown in FIGS. FIG . 16 shows an initial state, and FIG. 17 shows that the trimmer blade T floats by a certain amount and the boss 18 (FIG. 6) provided on the outer blade frame 9 hits the upper surface of the engagement groove 65 of the trimmer base 35. The state is shown in FIG.
17 shows the state where the main blade M is interlocked with the trimmer blade T and floats when the trimmer blade T is further pressed from the state of FIG. 17 and floats. At this time, not only the left trimmer blade T but also the right trimmer blade T T is the boss 18 of the outer blade frame 9
Since There has been engaged with the engagement groove 65 of the trimmer base 35, in which can the same operation.

Further, in this embodiment, as shown in FIG.
A skin contact guide 66 is formed integrally with the trimmer base 35 in a direction away from the main blade M of the trimmer blade T, and the skin contact guide 66 is curved in the reciprocating direction X so that the skin contact guide 66 and the trimmer blade T have a constant interval. Since the trimmer blade T and the main blade M are arranged on a substantially straight line, the trimmer blade T does not cause irritation and the hair can be comfortably removed. The guide 66 is provided with an inclined portion 66a for raising sleeping hair or slanted hair, which allows hair to be removed without shaving regardless of the growing direction. At this time, when the pitch of the skin contact guide 66 is too small, the skin contact is good, but when the long hair is cut, the introduction into the trimmer blade T becomes poor, and when it is too large, the introduction when cutting the long hair is good, but the skin contact is good. Since it becomes worse, it is better to arrange them at a pitch of about 3 to 5 mm. In this way, hair raising is provided in the front, and hair raising guides 66 are used as the hair raising guides so that the hair is not accumulated, and the pitch is set to 3 to 5 mm. This can be made difficult, and further, if a hole is provided in the concave portion 66b between the skin contact guide 66 and the trimmer blade T, it becomes possible to discharge the hair dust. Also, the recess 66
Also by b, it is possible to prevent the sharpness from being reduced due to clogging of hair dust, and it is easy to clean. Further, the dustproof rubber 90 prevents dust from entering the inside.

[0030]

As described above, the invention according to claim 1 is a reciprocating electric shaver in which a plurality of blades are independently supported on the upper end of the main body so as to be freely floatable in the vertical direction. while the upper and lower float freely linked Rutotomoni
A connecting driver element for driving the blade, transfer portion for driving the other blade in consolidated driver elements are formed integrally,
The transmission part is configured to float freely up and down following the other blade when the other blade moves in the vertical direction by a predetermined amount or more, so that the transmission part interlocks and floats in the middle of the float of the other blade, In conjunction with this, the connection driver, which can float freely up and down, floats with one blade, so a large amount of float can be taken, and as a result, each blade follows large unevenness and inclination of the skin surface and transmission. It is possible to provide a sharp reciprocating electric razor with less noise and driving load.

According to a second aspect of the present invention, one of the blades attached to the connecting driver according to the first aspect is arranged on the center side,
Since the other blade driven by the transmission portion is arranged on both sides of this one blade, the float amount on both sides is large and follows a large concave portion on the skin surface as in the case of the effect according to claim 1. It has the effect of being able to. The invention according to claim 3 uses the one blade according to claim 1 as a main blade for finishing,
Since the other blade is a trimmer blade for rough cutting,
In addition to the effects described above, the trimmer blades are positioned on both sides of the finishing main blade, which brings about the effect that the trimming blade can be finished short without leaving a shave.

According to the invention of claim 4, the trimmer blades are arranged on both sides of the main blade of claim 3, respectively. Therefore, in addition to the effect of claim 3, rough cutting can be performed by the trimmer blades located on both sides. As a result, it is possible to quickly shave regardless of the direction of the hair, and it is possible to finish the hair short without leaving any shave. According to a fifth aspect of the present invention, an engaging portion between the other blade of the first aspect and the transmission portion is provided on the center side of the other blade in the reciprocating direction, and the other blade floats in the vertical direction. Are arranged side by side in the reciprocating direction of the other blade, and in addition to the effect according to claim 1, the engaging portion and the float portion of the other blade are arranged in the reciprocating direction of the blade. Therefore, the distance in the direction orthogonal to the reciprocating direction of the other blade can be set small, and the other blade can be brought into close contact with the one blade to shorten the distance in the direction orthogonal to the reciprocating direction of the blade. As a result, it becomes possible to bring a plurality of blades into close contact with each other, even if it is a deep depression in the armpit, and to finish it short without leaving a shave.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a reciprocating electric shaver used in an embodiment of the present invention.

FIG. 2 is a sectional view taken along line JJ of FIG.

3 is a sectional view taken along line EE of FIG.

FIG. 4 is a front view of the above blade head.

FIG. 5 is a plan view of FIG.

FIG. 6 is an exploded perspective view of the same inner blade.

FIG. 7 is an exploded perspective view of a drive unit of the above.

FIG. 8 is an exploded perspective view of the above-mentioned trimmer blade.

FIG. 9A is a sectional view of a movable blade and a fixed blade of the same trimmer blade, and FIGS. 9B and 9C are sectional views of the movable blade.

FIG. 10 is a partially cutaway perspective view of the above blade frame.

FIG. 11 is a perspective view of the above reciprocating electric shaver.

FIG. 12 is a cross-sectional view illustrating a hair removing operation on a flat skin surface.

FIG. 13 is a cross-sectional view illustrating a hair removing operation on a recessed skin surface.

FIG. 14 is a cross-sectional view illustrating a hair removing operation on an uneven skin surface.

FIG. 15 is a cross-sectional view illustrating a hair removing operation on an inclined skin surface.

16 is a cross-sectional view explaining the operation of the blade head of FIG.

17 is a cross-sectional view illustrating the operation of the blade head of FIG.

FIG. 18 is a cross-sectional view illustrating the operation of the blade head of FIG.

FIG. 19 is a cross-sectional view illustrating a float state of the main blade of the above.

FIG. 20 is a cross-sectional view illustrating a float state of the main blade with respect to the skin surface.

FIG. 21 is a cross-sectional view illustrating a float state of the trimmer blade with respect to the skin surface.

FIG. 22 is a cross-sectional view of a conventional blade head.

[Explanation of symbols]

1A One blade 1B The other blade 8 body 23 motor 20 driver 21 Connected driver 34 Transmitter 100 engaging part 101 Float section M main blade T trimmer blade X reciprocating direction Y Direction orthogonal to the reciprocating direction

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-6-218154 (JP, A) JP-A-4-231991 (JP, A) JP-A-7-110071 (JP, A) JP-A-5- 293260 (JP, A) JP 6-182064 (JP, A) JP 7-250978 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26B 19/10

Claims (5)

(57) [Claims] 1. A reciprocating electric shaver in which a plurality of blades on the upper end portion is supported so vertically float each independently of the body, the upper and lower float freely linked one blade Rutotomoni to the motor of the driving element a connecting drive element for driving, the consolidated driver element is provided integrally with the transfer portion for driving the other blade, the other transmitting portion when the other blade has moved more than a predetermined amount in the vertical direction A reciprocating electric razor characterized by being floatable up and down following the blade of the. 2. One of the blades attached to the connecting driver is arranged on the center side, and the other blades driven by the transmission section are arranged on both sides of the one blade, respectively. The reciprocating electric shaver according to Item 1. 3. The reciprocating electric shaver according to claim 1, wherein one of the blades is a main blade for finishing and the other blade is a trimmer blade for rough cutting. 4. The reciprocating electric shaver according to claim 3, wherein trimmer blades are arranged on both sides of the main blade. 5. The engaging portion between the other blade and the transmission portion is provided on the center side in the reciprocating direction of the other blade, and the float portion for floating the other blade in the vertical direction is the reciprocating direction of the other blade. The reciprocating electric shaver according to claim 1, wherein the reciprocating electric razors are arranged side by side.