JPH06296772A - Reciprocating type electric razor - Google Patents

Abstract

PURPOSE:To increase the slit aperture ratio of the blade hole of an inside guide part to improve guide efficiency, and minimize stimulation to improve skin touch. CONSTITUTION:A reciprocating electric razor has finish shaving blade heads 1, 1 having outer blades 10 on both sides, and a rough shaving blade head 2 in the center. The outer blade pattern for the finish shaving blade heads 1, 1 has two zones of an inside guide part opposed to at least the other outer blade 10 and a finish part on the top. The blade hole of the inside guide part is formed into a slit form. The rough shaving blade head 2 prevents the skin from getting into the valley between the blade heads 1, 1 to improve skin touch. The blade hole of the inside guide part can be formed into a large and long hole, so that guide efficiency can be enhanced to enhance the cutting sharpness.

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 having outer blades provided on both sides thereof and a blade for rough shaving therebetween.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 10, blade heads 1 ', 1', 2'having thin blade-shaped curved outer blades are respectively constituted by net blades curvedly stretched on a mounting frame. In addition, the outer blade pattern of each blade head 1 ′, 1 ′, 2 ′ has an inner introduction portion P ₁ ′ and a top finish portion P ₂ ′.
'In those with three zones, an inner inlet portion P _1' outer inlet portion P ₃ blade hole and of the outer introducing portion P ₃ '6
1'and 62 'each have a large elongated hole shape, and the top finish portion P
The 'blade holes 63' ₂ is that the Tan'ana shape.

[0003]

In such a prior art example, since each blade head 1 ', 1', 2'is a curvedly stretched net blade, the skin in the valley between each blade head 1 ', 1'. Will come in. At this time, there is a blade hole 61 'in the facing inner introduction portion P1' between the blade heads 1'and ₁ ', and the blade hole 61' has a long hole shape, but as described above, the skin is In order to enter, the blade hole 61 ′ of the inner introduction portion P ₁ ′ is enlarged,
Moreover, it cannot be a long hole. Because the blade hole 6
This is because if the skin is squeezed into the inside from 1 ′ and the skin enters, the surface layer of the skin will be scraped by the inner blade and irritation will be felt, resulting in poor skin contact. This blade hole 61 even if increase the efficiency of introducing beard 'large, can not be and long holes, the inner inlet section P _1' could not issue a sharpness in. Further, 'the blade hole 63' of the outer introducing portion P ₃ for even a major long hole shape, the outer inlet portion P ₃ '
The direct contact of the skin with the skin sometimes caused irritation.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a blade hole of an inner introducing portion in an outer blade pattern having two zones of an inner introducing portion and a finishing portion. The aim is to provide a reciprocating electric razor that can increase sharpness by increasing the long hole opening ratio and yet feel good against the skin, and yet another object is to provide an inner introduction part, a finishing part and an outer introduction part. It is an object of the present invention to provide a reciprocating electric razor which can reduce irritation and can also introduce a beard from the outer introduction part in the outer blade pattern having three zones, even though the outer introduction part is in direct contact with the skin.

[0005]

In order to solve the above problems, the present invention is directed to an outer cutter 1 which is attached to a mounting frame 11 in a curved manner.
Finishing blade heads 1, 1 provided with 0 are provided on both sides, a rough shaving blade head 2 is provided between these finishing blade heads 1, 1, and the above-mentioned finishing blade heads 1, 1. The outer cutter pattern P of No. 1 has at least the inner introducing portion P ₁ facing the other outer cutter 10 and the finishing portion P at the top.
It is characterized in that it has two zones ₂ and _2, and the blade hole 61 of the inner introduction portion P ₁ is formed in a long hole shape.

Further, the outer blade pattern P has an inner inlet portion P ₁ facing at least the other of the outer cutter 10, a finishing portion P ₂ of the top, an inner inlet portion P ₁ across the finish portion P ₂ is It has three zones with the outer introduction portion P ₃ located on the opposite side, and the blade hole 63 of the outer introduction portion P ₃ has the same shape as the short hole-shaped blade hole 62 of the finishing portion P ₂ and the blade hole It is preferably formed larger than 62.

[0007]

According to the first aspect of the invention, the blade heads 1 and 1 for finish cutting having the outer blades 10 which are curved and stretched on the mounting frame 11 are provided on both sides, and the blade head 1 is provided. , 1
The rough shaving blade head 2 is provided between them, and the blade hole 61 of the inner introduction portion P ₁ in the outer blade pattern of the finishing shaving blade heads 1 and 1 is formed into a long hole shape. The blade head 2 prevents skin from entering the valleys between the blade heads 1 and 1. Therefore, the blade hole 61 of the inner introduction portion P ₁ can be made large and long to improve the introduction efficiency, and even if the blade hole 61 is made large and long, the blade hole 61 Since there is no risk of the skin being squeezed in from inside, it will reduce irritation and improve the skin contact.

According to the invention of claim 2, the outside
Introduction P₃The blade hole 63 of the finishing part P ₂Short hole shaped blade hole
Since it has the same shape as 2 and is larger than the blade hole 2,
The outer introduction part has a long hole with a large blade hole as in the past.
Unlike the case, the outside introduction part P ₃Skin directly contacts the blade hole 63 of
There is less irritation even when touched, and the beard guidance
You can also enter.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiment. As shown in FIG.
A blade head 1 for finish shaving, a blade head 2 for rough shaving (slit blade block), and a blade head 1 for finish shaving are arranged in this order on the upper end of the main body 5, and these three blade heads 1, 1 , 2 are simultaneously driven by the motor 4. In the figure, 6 is a trimmer block, and 7 is a switch unit.

As shown in FIG. 1, the finish cutting blade heads 1 and 1 include an outer blade 10 composed of a metal thin plate net blade,
It is composed of a mounting frame 11 that holds the outer blade 10 and an inner blade 12 (FIG. 4) that is in sliding contact with the inner surface of the outer blade 10. Each of the outer blades 10 is curved and stretched on the mounting frame 11, and the outer blade pattern P has an inner introduction portion P ₁ , a top finishing portion P ₂ , as shown in FIG. And the outer introduction portion P ₃ has three zones. The blade hole 61 of the inner introduction portion P ₁ is a large and long hole that is better introduced, and the blade hole 62 of the top finishing portion P ₂ is a short hole-shaped hole. _{The third} blade hole 63 has the same shape as the short hole-shaped blade hole 62 of the finishing portion P _{2 and} has the finishing portion P _2.
It consists of a hole that is larger than the _second blade hole 62 and has a good introduction. Here, since the outer introduction portion P ₃ is in direct contact with the skin, a long and large hole for better introduction is not provided, but the inner introduction portion P ₃ is not provided.
_{Since 1} does not come into direct contact with the skin by the rough shaving blade head 2, it is possible to provide a large and long hole for better introduction. In the figure, reference numeral 64 is a waste hole that is not in contact with the inner blade.

As shown in FIG. 1, the mounting frame 11 on which the outer blade 10 is curved and stretched has a plurality of heat-sealing projections 13 for mounting the outer blade on both outer surfaces thereof and a connecting boss. 14 and engaging projections 15, and E-shaped elastic arms 16 are integrally provided on both end surfaces.
An engaging protrusion 17 is provided at the tip of the central piece in 6. Note that it is preferable to make a large cutout around the elastic arm 16 because cleaning of the attached beard scraps is facilitated.

On the other hand, the rough shaving blade head 2 has an outer blade (slit outer blade) having a large number of slit-shaped blade holes extending to both side surfaces.
20, a pair of plates 21 and 21 respectively fixed by heat sealing to both ends in the longitudinal direction of the outer blade 20 shown in FIG. 6, an inner blade (slit inner blade) 22 slidingly contacting the inner surface of the outer blade 20,
And a joint 23 fixed to the inner blade 22. Here, as shown in FIG. 4, the outer blade 20 is formed such that the width of the upper surface thereof is wider than that of the lower portion. In this way, by making the width of the upper surface of the outer blade 20 wider than the lower portion, the rough shaving blade head 2
Can be installed in a narrow space, the intrusion of the skin can be suppressed, and further, the long hole opening ratio of the blade hole 61 of the inner introduction portion P ₁ can be further increased. In addition, FIG.
In the slit width f of the outer blade 20 shown in FIG. 3, the end portion g is large and the upper surface e is small (d ₁ <d ₂ ), which suppresses stimulation by the outer blade 20 and improves the skin contact, The introduction performance can be satisfied. further,
As shown in FIG. 7 (a), the inner blade 22 of the blade head 2 for rough shaving has a side surface h formed in a tapered shape, whereby the blade surface of the inner blade 22 and the blade surface of the outer blade 20 are separated from each other. It is structured so that it can be surely contacted to improve sharpness.

In the rough shaving blade head 2, as shown in FIG. 6, a push-up spring is provided between the upper surface of the lower piece of the plate 21 and the lower surface of the spring receiving members 27, 27 at both ends of the inner blade 22, respectively. 24, 24 are provided. The plate 21 is
Engagement holes 25 and 26 arranged vertically are provided on the outer end surface. Further, the outer blade 20 and the inner blade 22 are contained within the thickness of the plate 21 and the joint 23 except the upper portion of the outer blade 20, so that the overall thickness is suppressed. An opening is formed in the disposition portion of the push-up spring 24 because the push-up spring 24 is
While avoiding interference with other components, the outer diameter of the coil spring used as the push-up spring 24 is increased to reduce the spring constant of the push-up spring 24, thereby reducing the variation in spring push-up force due to mounting accuracy. This is because. Furthermore, the joint 23 arranged in the central portion of the inner blade 22 and the spring bearing members 27, 27 arranged at both ends are formed separately.
This is for improving the dischargeability of beard scraps.

The blade heads 1, 1, 2 are attached to the upper end of the main body 5 via the cassette frame 3 and the outer blade frame 56 shown in FIG. The cassette frame 3 is formed in a rectangular frame shape by molding a synthetic resin, has engaging holes 31, 31 on both sides of both longitudinal end faces thereof, and has an E-shaped molding at the center. The product elastic arm 32 is provided, and the tip end of the molded product elastic arm 32 is provided with a pair of upper and lower engaging protrusions 33 and 34. Further, each of the above-mentioned engaging holes 31
On the inner surface side of the cassette frame 3, the upper end of the guide groove 35 whose lower end reaches the bottom surface of the cassette frame 3 is connected.
Further, the cassette frame 3 is provided with hook portions 36, 36 provided with decorative buttons 39 on the outer surfaces of both ends thereof. These hook portions 36, 36 are for detachably attaching the cassette frame 3 to the outer blade frame 56. A slide handle 5 is provided on the outer surface side of one side surface of the cassette frame 3.
0, the slide plate 51 is arranged on the inner surface side. The slide handle 50 and the slide plate 51 are slidably attached to the cassette frame 3 by engaging a hook 52 of the slide handle 50 with the slide plate 51 through an elongated hole 37 provided in the cassette frame 3. The slide plate 51 is provided with cam portions 53, 53 whose upper edges are inclined edges at both longitudinal ends thereof.

In contrast to the cassette frame 3 formed as described above, the mounting frame 11 in the blade head 1 has the cassette frame 3
It is accommodated in the cassette frame 3 from the lower opening of the above, and is attached to the cassette frame 3 by engaging the engaging projections 17 with the engaging holes 31 of the cassette frame 3. At the time of this attachment, the guide groove 35 whose upper end reaches the engagement hole 31 guides the engagement protrusion 17 to the engagement hole 31. On the other hand, the blade head 2 is attached to the cassette frame 3 by engaging the engaging protrusions 33 and 34 in the cassette frame 3 with the engaging holes 25 and 26 provided on both end surfaces thereof.

As shown in FIG. 5, metal elastic members 65 are sandwiched and fixed between the both ends of the shaving blade head 2 and the molded product elastic arms 32 of the cassette frame 3. In addition, the lower part of the cassette frame 3 and the E of the cassette frame 3
As shown in FIG. 8, each of the character-shaped molded product elastic arms 32 is provided with a protrusion a as a bottom dead center stopper, and the lower part of the metal elastic member 65 is sandwiched at the bottom dead center.
The position where the metal elastic member 65 is sandwiched is at a position displaced from the elastic fulcrum b of the metal elastic member 65, and the movable support portion c of the metal elastic member 65 is formed in a U shape, and the tip thereof is a cassette frame. 3 is inserted into the bottom hole. The metal elastic member 65 and the molded product elastic arm 32 allow the rough shaving blade head 2 to float. In FIG. 5, reference numeral 28 is a shoulder portion which is provided on both upper ends of the rough shaving blade head 2 and contacts the cassette frame 3.

On the other hand, an eccentric shaft and a pair of driver elements 41 and 42 for converting the rotation of the eccentric shaft into reciprocating motion are provided on the output shaft of the motor 4 arranged in the main body 5 side shown in FIG. The inner blades 12 and 12 of the blade heads 1 and 1 are connected to the driver elements 41 and 42, which are connected to each other and whose upper portion projects from the upper surface of the main body 5, (FIG. 4)
Are connected. At this time, the driver elements 41, 42 and the inner blade 12,
Push-up springs 19 and 19 for urging the inner blade 12 upward are disposed between the springs 12 and 12. In addition, one driver 41
A joint 44 (Fig. 3) is attached to the. This joint 4
4 engages the joint 23 in the blade head 2.

In the above structure, when the blade heads 1, 1, 2 of the reciprocating electric shaver are moved along the surface of the skin, they are introduced into the blade holes 61, 62, 63 of the first blade head 1 and caught. The sleeping beard that passed without passing was the first blade head 1.
It is caused by skin stretching. Next, the shaving blade head 2 roughly shaves long beards and sleeping beards, and the last blade head 1 surely deeply shaves them. At this time, since the rough shaving blade head 2 is provided in the center and the upper surface thereof is made flat, it is difficult for the skin to enter between the blade heads 1, 2 and 1, whereby the inside shown in FIG. Even when the elongated hole shape of the blade hole 61 of the introduction portion P ₁ is made larger to make it easier to introduce, there is no risk of being squeezed inside from the blade hole 61 and entering the skin, and irritation is reduced. And the skin feels better. Moreover, by making the blade hole 61 of the inner introduction portion P ₁ large and long, the introduction efficiency can be increased and sufficient sharpness can be obtained. Further, the blade hole 63 of the outer introduction portion P ₃ of the blade heads 1, 1 has the same shape as the short hole-shaped blade hole 62 of the finishing portion P ₂ , and the blade hole 6 has the same shape.
Since is made larger than the 2, irritation is reduced even when the skin is in direct contact with the blade holes 63 of the outer introducing portion P _3, and can also introduce beard skin even in the outer inlet portion P ₃ You can get a good touch and sharpness.

Further, in this embodiment, the outer blade 2 of the blade head 2 is
As shown in FIG. 4, by making the upper surface width of 0 larger than the lower width, the depression α between the upper part of the blade head 1 and the upper part of the blade head 2 can be reduced, and the amount of skin that dives between them can be reduced. The outer blade 20 can be made smaller, and it is possible to prevent skin from colliding with the corner portion of the outer blade 20 of the blade head 2.
The outer blade 20
It will promote the introduction within.

On the other hand, when the motor 4 of the reciprocating electric shaver is driven, the rotation of the motor 4 is converted into reciprocating motion by the drivers 41 and 42, and the reciprocating motion causes the inner blades 12 and 12 of the blade heads 1 and 1 to move. And the inner blade 22 of the blade head 2 are reciprocally driven. When these blade heads 1, 1, 2 are pressed against the skin,
The blade head 1 floats when the elastic arm 16 of the mounting frame 11 bends, and the blade head 2 floats when the molded product elastic arm 32 and the metal elastic member 65 of the cassette frame 3 bend, respectively. Regarding the vertical movement of the blade head 1, in addition to the elastic force of the elastic arm 16, the driver elements 41, 4
2 and the inner blades 12, 12 are interposed between the inner blade 12 and the outer blade 1
The force of the push-up spring 19 pressing against the inner surface of 0 also acts. Further, as the blade head 2 moves up and down, the force of the push-up spring 24 pressing the inner blade 22 against the outer blade 20 acts, and the elastic force of the molded product elastic arm 32 and the metal elastic member 65 shown in FIG. And the elastic force of act simultaneously.

By the way, the float force is reduced by the creep of the molded product elastic arm 32 alone, but the metal elastic members 65 are respectively provided between the molded product elastic arm 32 of the cassette frame 3 and both ends of the rough shaving blade head 2. By providing it, the creep force does not change from the initial value. Moreover, since the metal elastic member 65 is sandwiched by the protrusion a which is the bottom dead center stopper at a position deviated from the elastic fulcrum b, the metal elastic member 65 is not plastically deformed even at the bottom dead center of the float, and its deformation is prevented. Can be prevented. Therefore,
Even if the molded product elastic arm 32 creeps, the metal elastic member 65 always secures the float force, and there is an advantage that a smooth float force that does not change from the initial stage can be secured.

Further, since the metal elastic member 65 is sandwiched and fixed between the molded product elastic arm 32 of the cassette frame 3 and both ends of the rough shaving blade head 2, the mounting of the metal elastic member 65 becomes simple and reliable. It is possible to provide a float means having a constant float force in a narrow space. In addition, since the metal elastic member 65 is located outside the cassette frame 3, there is no risk of it coming off during cleaning of the blade heads 1, 1.

As another embodiment of the present invention, as shown in FIG. 9, the central shaving blade head 2 may be a trimmer blade provided with comb teeth. Also in this case, the skin does not enter the valleys of the double-edged heads 1 and 1, and the inner introduction portion P ₁ of the outer blade 10 of the blade head 1 is used for rough shaving,
And it can be a long hole. 2a in the drawing is a blade frame, 2
b is a fixed blade, 2c is a movable blade, 2d is a blade frame, and 2e is a dowel. Reference numeral 70 denotes a spring that is interposed between the spring pressing plate 71 and the movable blade 2c, and applies a sliding pressure that produces sharpness. Denoted at 72 are convex portions projecting from both sides of the blade frame 2a, and are long holes 73 provided at both sides of the blade frame 2a.
Is fitted to.

[0024]

As described above, the invention according to claim 1 is
Finishing shaving blade heads provided with outer blades curved and stretched on the mounting frame are provided on both sides, and a shaving blade head is provided between these finishing shaving blade heads. The outer cutter pattern of the head has at least an inner introducing portion facing the other outer cutter and a finishing portion on the top.
Since it has two zones and the blade hole of the inside introduction part is formed in a long hole shape, the rough shaving blade head can prevent skin from entering the valleys between the outer blades, and stimulate when shaving. While not feeling, it is possible to obtain a reciprocating electric razor satisfying both sharpness and skin contact as a result of making it possible to increase the efficiency of introduction by making the blade hole of the inner introduction portion large and long.

According to a second aspect of the invention, the outer blade pattern according to the first aspect has at least an inner introduction portion facing the other outer blade, a top finish portion, and an inner introduction portion sandwiching the finish portion. And an outer introduction portion located on the side opposite to the outer introduction portion, and the outer introduction portion has a blade hole having the same shape as the short hole-shaped blade hole of the finishing portion and larger than the blade hole. Therefore, even though the skin directly contacts the blade hole of the outer introduction part, there is little irritation, and whiskers can be introduced, so that the reciprocating electric that satisfies the skin contact and sharpness even in the outer introduction part You can get a razor.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of an outer blade pattern of the same.

FIG. 3 is a vertical sectional view of the above.

FIG. 4 is a partial vertical sectional view of the above.

FIG. 5 is a cutaway front view showing a state where a blade head is mounted on the cassette frame of the above.

FIG. 6 is a front view showing the above-described rough shaving blade head.

FIG. 7 (a) is a partial cross-sectional view of the above-described rough shaving blade head, and FIG. 7 (b) is a partial plan view.

FIG. 8 is a side view showing a state during assembly.

FIG. 9 is a partial vertical sectional view of the above.

FIG. 10 is a perspective view showing a conventional blade head.

[Explanation of symbols]

1 Blade Head for Finishing Shaving 2 Blade Head for Rough Shaving 10 Outer Blade 11 Mounting Frame 61, 62, 63 Blade Hole P Outer Blade Pattern P ₁ Inside Introduction P ₂ Finishing P ₃ Outside Introduction

Claims (2)

[Claims] 1. A finishing shaving blade head provided with an outer blade curved and stretched on a mounting frame is provided on both sides, and a rough shaving blade head is provided between these finishing cutting blade heads. The outer blade pattern of the above-mentioned finishing sharpening blade head is
A reciprocating electric machine characterized in that it has two zones, an inner introducing portion facing at least the other outer blade and a finishing portion at the top, and the blade hole of the inner introducing portion is formed in a long hole shape. Razor. 2. The outer cutter pattern comprises at least an inner introducing part facing the other outer cutter, a finishing part at the top, and an outer introducing part located on the opposite side of the inner introducing part with the finishing part interposed therebetween. 2. The reciprocating mechanism according to claim 1, wherein the reciprocating blade has three zones, and the blade hole of the outer introduction portion has the same shape as the blade hole of the short hole shape of the finishing portion and is larger than the blade hole. Type electric razor.