JPS5997691A - Electric razor blade - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is a major improvement over electric razor blades.

Traditionally, electric shavers come in reciprocating types, rotary types, rotary sets, etc., but each type has its own! All types have their shortcomings, especially the blade type, which varies greatly in length and sharpness. Since the inner blade rotates, the cutting edge can be limited, so the edge of the cutting blade can be passed at a sharp angle, producing a sharp cutting taste, but the blade surface has a small sharpness. , poor quick shaving properties.

However, in a reciprocating electric shaver, the cutting edges differ during the operating stroke of the inner blade, and when one has an acute-angled cutting edge, the other has an obtuse edge. The drawback was that it tasted bad.

In addition, in general, the larger the number of blades, the quieter the motion, and because many blades pass through the same hole in the outer blade, which has well-known pores, the sharpness, such as the ability to sharpen quickly, is also improved. Although they are good, in the past, it was disadvantageous in terms of cost to use many blades, so the cutting quality had to be compromised to a certain level.

The present invention provides a structure in which the blades of all types of electric shavers, such as rotary type, reciprocating type, and rotary set, have acute angles and can reduce costs even when a large number of blades are arranged. The aim is to improve the sharpness of razors.

An embodiment of the present invention will be described with reference to figures, but parts not directly related to the present invention will be simplified or omitted.

FIG. 1 is a sectional view of a rotary electric shaver in which the blade of the present invention is employed as an embodiment, as viewed from the side. Figure 2 is b
A sectional view seen from the front of FIG. 61. FIG. 6 shows an inner blade body made of stainless steel material showing an embodiment of the present invention. Figure 4 is secret 3
A cross-sectional view of the anus taken along A-Δrei (Fig.
,4 is! j when the inner cutter body of is attached to the inner cutter support 4
・2) Valley 1 cause. FIG. 6 is a plan view showing an application example of the inner cutter body, and FIG. 7 is a partially assembled sectional view when the inner cutter of the present invention is used as the inner cutter of a well-known rotary razor. 8
The figure is a P-side view of the inner blade used as the vinyl I blade body of the well-known former G-style electric razor due to a misfire. Figure 9 shows the inner blade 01 using a combination of the inner blade bodies shown in Figure 8.
1 sectional view.

FIG. 10 shows a side cross-section of an inner cutter showing an example of application of the present invention.
In all the figures, 1 is a main body case, 2 is an outer cutter frame, and 3 is an outer cutter, which has a large number of pores as is well known.

Reference numeral 4 denotes an inner cutter support, which has 1XAa'r on the left and right ends to fit with the bearing hole of the outer cutter frame 2, as shown in FIG. 2, and further includes a pin 4b for fixing the inner cutter body 5 and a motor. It has 40 parts that engage with a belt 7 that transmits the power from 6. 5
is the inner blade body made of stainless steel 6Y as an electric razor blade.
4 ＠ etc., and the notches 5a, 5
f is opened in the shape of a key, the first blade part 5d, the second blade part 5
In addition, holes 5b and 5e that engage with the narrow portion SC and the pin 4b of the inner cutter support 4 are formed. Also, the second blade portion 5g is slightly bent at the 5h portion, and the fourth blade portion 5g is bent slightly at the 5h portion.
Although it is in the state shown in the figure, it does not necessarily have to be bent. Fig. 5 (is a perspective view of the inner cutter shown in the 61st st. When the inner cutter body 5 is wound around the inner cutter support 4, the pin 4b is used to tighten the force/force 71. When the inner cutter body 5 shown in FIG. In the case of 50 parts, the spring 1 is weak and wraps around the outer circumference of the inner blade support A4, but the first spring
Since the width of the blade part 5dJj is wider than that of 50 and has strong springiness, and its base is fixed with the pin 4b, the notch 5g of the inner blade body passes through the entire notch 5g and is almost tangent to the inner blade support 4. protrude in a direction.

(Similarly, the blade portion 5g of the crow 2 is also 5g lower than the state shown in FIG.
It is pulled out from the notch 5f while changing the bending angle with respect to the 0 part, and the result is as shown in FIG. That is, as shown in FIG. 3, in the actual example, the first blade part and the second blade part of the inner blade body 5 are combined with the silk to form one block, and 8 blocks are arranged, but the inner blade support 4 When wrapped around the blade, 16 blades will protrude at approximately the same pitch. The blade part sa of the inner blade body 5 in this state, the cutting edge of 5g (1, the cutting edge in the state as it is pressed) Assemble as shown, outer blade 5 and blade part 5
Apply polish song powder or the like to the surface of the blades d and 5g and rotate them. As a result, the edges of blades 1, 7 and 5a and 5g are finished at acute angles, as shown in Figure 11 and text 1A51. It is completed as a looking razor. When the motor 6 (il- self-rotates in the state shown in Fig. 1), the inner blades are
g', (by the spring action of 111 minutes, the blade part 5a with the acute angle is rotated clockwise and rotated in close contact with the outer blade).

By cutting off all the hair introduced through the pores of the outer blade with a 5g cutting edge, it is possible to shave with good sharpness. While my father was wearing beards 5 and 11, the thin outer blade 3 was pressed against his skin and tried to make a rough cut into the inner blade. If this bowl is big, is it perfectly round? The U-shaped cross-sectional shape (shown in FIG. 1) including the inner cutter is distorted, and the cutting edge of the inner cutter and the inner wall of the outer cutter 5 no longer come into close contact. As shown in Figure 1, the inner wall of the outer cutter is brought into contact with the inner wall of the outer cutter at multiple points at the same time using the spring force, and the spring force acting on the core force prevents the outer cutter from deflecting due to the forward pushing force. Even if the outer blade is thin, the outer blade cut l'IiI shape 1k can be kept perfectly round and the cutting quality will be good. can be kept.

Moreover, as shown in FIG. 1, the outer cutter 6 and the [)] blade 5d.

5g rotates clockwise while in contact with the outer cutter 6, it eventually separates from the outer cutter and touches the outer cutter with its hip again.
It would be 9 times more difficult to leave. At the time of this contact start, a collision occurs between the cutting edge of the inner cutter and the outer cutter 6, but vibration and noise are likely to be generated during the collision.

However, the stiffness decreases as the amount of deflection of the spring against the outer cutter of the inner cutter (indicated by A in the first ['A]) decreases, but from the point of view of improving the cutting quality, The closing force between the inner cutter and the outer cutter is required by an appropriate amount of deflection A of the blade portion, and cannot be reduced too much.

Therefore, as in the present invention, if the number of inner blades is increased while maintaining adhesion, the intermittent inner and outer blades
': is close to that of continuous 'fX, and vibration and noise can be reduced.
c When using the inner cutter shown in Fig. 3, compared to the conventional type in which a number of independent inner cutter bodies are created and assembled into an inner cutter support, it is easier to press l"l = +' = JcA. etc., it is possible to form a large number of σ] blades [X], and the cost does not increase much and the effect of Th1l is increased.Also, according to an example of Honbo Kamimei, as shown in No. 3♂11. Tooshi coin 1:+
し：The first blade 5d and the second blade 5 ((The fourth part is installed inside the second blade 5g (first blade 5d);
! +' The length in the direction of the arrow in Figure 5 is too short. Therefore, when wrapped around one Uchibana Bunshi tool, the sunk that reaches the same radius as the circle connecting the cutting edge of the first blade will require 5a of the inner blade body.
It is necessary to change the bending angle for the part from the first blade,
In one live gun of the present invention, in 0, the second blade is set 5 times higher than the first blade.
It is set close to perpendicular to part a (Figures 1 and 4).
(shown in Figure 1). At this time, although the cutting edge angles are different, they are all acute, and the one with the smaller cutting edge angle has a longer spring part, so even though the adhesion to the outer blade is weak, sufficient cutting quality can be obtained. In the case of a blade with a large edge angle, the length of the spring part is short and the adhesion is strong, so it can sufficiently withstand cutting resistance when cutting beard hair, and there is no problem in practical use.

Further, as an embodiment of the present invention, the first blade and the second blade are integrally formed in the same member in FIG. 3, but the present invention is not limited to this. It can be made separately and fixed by welding or caulking to the position of the second blade shown in Fig. 5, or it can be made separately and the second blade is supported by the inner blade. It is also possible to fix the second blade to the tool 4 and make the second blade protrude from a notch near the first blade. Even if it is done in this way, it does not deviate from the gist of the present invention.

Application examples of the present invention will be explained with reference to FIGS. 4, 7, 8, 9, and 10.

FIG. 6 shows a different planar shape of the inner cutter body 5 from FIG. 5, but when the inner cutter body 5 shown in FIG. Because it doesn't, it's easy to use the area where the beard doesn't cut. Therefore, as shown in Figure 6,
If 50 parts are formed alternately on the left and right for each block of the blade,
By using two adjacent blades, it is possible to create the entire cutting range across the entire width of the inner blade.

Fig. 7 t shows an embodiment in which the inner cutter according to the present invention is applied to the inner cutter of a well-known rotary electric shaver. , 3rd
By configuring the same as shown in the figure, a plurality of blade parts 5'd and 5g can be configured with one inner blade body 5,
By selecting the bending angle, the cutting edge angle can be set to any desired angle. Reference numeral 8 denotes a well-known inner cutter spring made of a separate member, and, like the above, it always acts to press the inner cutter body 5 and the entire outer cutter 3.

FIG. 8 shows an application of the present invention to the inner blade of a well-known reciprocating electric shaver. Notch 5a inside the inner blade body 5
and cut out the first blade 5d as shown in the first blade 5 (1, form the second blade 5g, bend it at the f-line 5h, and make a plurality of pieces). are arranged in combination so that the adjacent second blade 5g penetrates, and then the resin 10
Even if this inner cutter is reciprocated from side to side in FIG. 9, the same effect as described above can be obtained.

Alternatively, as shown in FIG. 10, a plurality of inner cutter bodies 5 may be wrapped around one inner cutter support 4 in the same manner as described above.

Although one embodiment and an application example of the present invention have been described above, the electric shaver blade according to the present invention can be used as both an inner cutter and an outer cutter, and is also a rotary type.

All types of electric kettles, including reciprocating type and rotary set 9
It can be used for

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an electric shaver showing an example of the paddle of the present invention. FIG. 2 is a front cross-sectional view of FIG. 1. FIG. 6 is a plan view of an inner blade showing an embodiment of the present invention. Figure 4 is a sectional view taken along line A-A in Figure 5. Figure 5 C construction, No. 3゜4
FIG. 3 is a perspective view of the inner cutter in which the inner cutter body 5 shown in the figure is fixed to the inner cutter support 4; Figure 6 is a plan view of the inner blade body according to an applied example. FIG. 7 is an assembled cross-sectional view showing an embodiment in which the inner cutter body according to the present invention is applied to an oral-style 'Sakira' razor. FIG. 8 is an fC diagram of an example of a 6 m long inner cutter body according to the present invention applied to the inner cutter body of an Otsune type electric shaver. Figure 9 shows the 8th
Partial assembly [1111 sectional view] in which the inner cutter shown in the figure is assembled as an inner cutter. FIG. 10 is a side sectional view of an inner cutter showing an application example of the present invention. In the entire diagram, 1...Main case 2.Old...Outer cutter frame 3...
...Outer blade 4...Inner blade support 5.
...Inner blade body 5d...First blade 5g...
・Second blade and above Applicant: Suwa Sayakosha Co., Ltd. No. 10 Fan

Claims (5)

[Claims] (1) Consisting of a blade main body made of a thin strip, a first blade connected to the blade main body, and a second blade with a part of the first blade cut out and protruding from the k-cut margin. An electric razor blade featuring (2) The 'ttZ razor blade according to claim 1, characterized in that the blade main body, the first blade, and the second blade are made of one material. (3) The electric shaver blade according to claim 1, wherein the first blade and the second blade have different cutting edge angles. (4) The first blade and the second blade are used as one block, and a plurality of blocks are arranged on the same blade at an appropriate pitch, as described in the scope of Patent No. 6, item 1. electric razor blade. (5) A first blade on the same blade body. Configure the blade of Guru 2 and 1
A plurality of blocks are arranged, and the first body is arranged in a plurality of blocks.
Claim 1 characterized in that the first blade of the block is combined with the second blade of the second block.
Electric shaver 9 blades listed in section.