JPH04352989A - Electric razor - Google Patents

Abstract

PURPOSE:To provide an electric razor whereby a mustache can be easily placed in through mustache introducing holes and well cut even under a conventional condition that the mustache is not well cut without advancing into the mustache introducing holes, by a condition such as a speed of moving an outer blade in the direction of moving an inner blade, timing of moving the inner blade and a falling condition or the like of the mustache in the direction of crossing the moving direction of the inner blade. CONSTITUTION:Clip angles alpha, beta spreading in the width direction of an outer blade 12 are formed between blade side parts 17a, 17b of a mustache introducing holes 17 provided in the outer blade and a cutting edge unit 14 of an inner blade 13. The mustache introducing hole 17 is formed into a trapezoidal shape, opened in the width direction of the outer blade 12, and also arranged so that spreading directions of the clip angles alpha, beta of the fellow adjacent blades are respectively set to the opposite direction in the reciprocating direction of the inner blade 13 and in the width direction of the outer blade 12 orthogonal to this reciprocating direction.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is characterized in that an inner cutter reciprocates in the longitudinal direction within a semi-cylindrical outer cutter in which a large number of hairlet introduction holes are formed in a mesh pattern, and the hairs inserted into the hairlet introduction holes are removed. This invention relates to a reciprocating electric shaver that cuts between an inner cutter and an outer cutter.

0002

[Prior Art] This type of reciprocating electric shaver is shown in FIG. 5 (see Utility Model Application No. 60-5685)
There is something like that disclosed in

In the electric shaver shown in FIG. 5, a semi-cylindrical outer cutter 2 is attached to one end of a main body case 1, and an inner cutter 3 is disposed within the outer cutter 2.

The inner cutter 3 includes a cutting blade support 3a extending in the longitudinal direction of the outer cutter 2, and a large number of cutting blade bodies 4 protruding from the cutting blade support 3a at equal pitches in the longitudinal direction. . This cutting blade body 4 extends in the width direction and is brought into elastic contact with the inner surface of the outer cutter 2.

Moreover, the inner cutter 3 is linked to a motor 6 via a conversion mechanism 5 that converts rotation into reciprocating motion, and by operating the motor 6, the inner cutter 3 is moved in the longitudinal direction of the outer cutter 2 (see FIG.
It is caused to reciprocate in the direction of arrow A). Incidentally, since this structure is well known, its explanation will be omitted.

Furthermore, as shown in FIGS. 6 and 7, the outer cutter 2 has a large number of parallelogram-shaped hair introduction holes 7 formed in a zigzag pattern in a direction (width direction) perpendicular to the moving direction of the inner cutter 3. As the inner cutter 3 reciprocates, a hair introduction hole 7 is formed between the outer cutter 2 and the cutting blade 4 in the direction of movement of the cutting blade 4.
An included angle θ is formed between the cutting edge portions 7a, 7b and the cutting blade body 4 as shown in FIG.

Therefore, as the inner cutter 3 reciprocates, the hair 8 inserted into the hair introduction hole 7 is cut at the included angle θ between the outer cutter 2 and the cutting blade body 4 of the inner cutter 3. Become.

By the way, the edge portions 7a, 7 of the hair introduction hole 7
The included angle θ formed between b and the cutting blade 4 is such that the adjacent ones in the width direction all face opposite directions.
When the outer cutter 2 is moved in the width direction, the hair 8 in the width direction
Even if the direction of inclination is not constant, the hair 8 can be cut well to some extent.

[0009]

[Problems to be Solved by the Invention] However, in the moving direction of the inner cutter 4, the blade edges 7a and 7b of each hair introduction hole 7 and the cutting blade body 4
A pair of included angles θ formed between the two are expanded in opposite directions, and the blade sides 7a and 7b of the hair introduction hole 7 are provided in parallel, and the inner cutter 3 of the hair introduction hole 7 is The width in the moving direction is constant in all parts in the direction intersecting the moving direction.

For this reason, the speed at which the outer cutter 2 is moved in the moving direction of the inner cutter 4, the movement timing of the inner cutter 4, and the inner cutter 4
Depending on conditions such as how the beard falls in a direction intersecting the direction of movement of the beard, the beard 8 may not enter the beard introduction hole 7 and may not be cut properly.

[0011] Therefore, it is an object of the present invention to provide an electric razor that can easily enter the beard through the beard introduction hole and cut the beard well even under such conditions.

0012

[Means for Solving the Problems] In order to achieve this object, the invention according to claim 1 provides an outer cutter formed in a semi-cylindrical shape and having a large number of quadrilateral hair introduction holes formed in a mesh pattern;
It has a large number of plate-shaped cutting blades that are pressed against the inner surface of the outer cutter, and an inner cutter that moves back and forth in the longitudinal direction of the outer cutter while slidingly contacting the inner surface of the outer cutter. A pair of opposing blade edges extending in the width direction of the outer cutter of each whisker introduction hole are inclined at a predetermined angle with respect to each cutting edge body of the inner cutter, so that the cutting edge body is aligned with the blade edge portion. In an electric shaver that forms an included angle that expands in the width direction of the outer cutter between the cutting blade body and the blade edge when corresponding, the hair introduction hole is formed in a trapezoid shape that opens in the width direction of the outer cutter. In addition, the electric shaver is arranged such that the directions of expansion of the included angles of adjacent ones in the reciprocating direction of the inner cutter and the width direction of the outer cutter perpendicular to the reciprocating direction are opposite to each other. shall be.

[0013] Furthermore, in the invention according to claim 2, all of the included angles are formed equally.

[0014]

[Operation] In such a configuration, a cutter is formed between the cutting edge of the inner cutter and the edge of the adjacent hair introduction hole in the direction perpendicular to the moving direction of the inner cutter (width direction of the outer cutter). Since the expanding directions of the included angles are opposite to each other, even if the beard falls to either side in the width direction of the outer cutter, when the outer cutter is moved in the width direction, the beard will not move to the width of the outer cutter. Either one of the hair introduction holes adjacent to each other in the direction will be cut.

Further, in the moving direction of the inner cutter, the directions in which the included angles formed between the edge portions of adjacent hair introduction holes and the cutting edge body of the inner cutter are opposite to each other. Moreover, since each hair introduction hole is formed in a trapezoidal shape that opens in the width direction, a set of included angles formed in each hair introduction hole are in the same direction (one of the width directions of the outer cutter). Since the outer cutter is expanded in the length direction, the width of the outer cutter in the longitudinal direction is widened at one side in the width direction of the outer cutter. As a result, even if the hair has fallen in one direction in the direction of movement of the inner blade (the longitudinal direction of the outer blade), when the outer blade is moved in the longitudinal direction, the hair will fall into the wide area of each hair introduction hole. If it is compatible with this, the hair will enter the hair introduction hole from the wide part, and the hair will enter the hair introduction hole from the wide part, and there will be a gap between one of the blade edges of the pair of hair introduction holes (the blade edge located in the direction in which the hair falls) and the inner blade. It will definitely be cut off.

Furthermore, when the outer cutter is moved in the longitudinal direction, if the hair does not correspond to the wide part of each hair introduction hole, when the outer cutter is moved in the longitudinal direction, the hair will be Corresponding to the wide part of the beard introduction hole, enter the beard introduction hole from the wide part of the beard introduction hole, and insert one side of the set of blades of the beard introduction hole ( This ensures that the cut is made between the inner blade and the blade edge (located in the falling direction).

[0017]

[Embodiment] Next, an embodiment of the present invention will be described based on FIGS. 1 to 4.

In FIG. 4, a semi-cylindrical outer cutter 12 is attached to one end of the main body case 11, and an inner cutter 13 is disposed within the outer cutter 12.

The inner cutter 13 includes an inner cutter support 13a extending in the longitudinal direction of the outer cutter 12 (in the direction of arrow A in the figure), and a large number of protrusions provided on the inner cutter support 13a at equal pitches in the longitudinal direction. A cutting blade body 14 is provided. This cutting blade body 14 extends in the width direction of the outer cutter 12 and is brought into elastic contact with the inner surface of the outer cutter 12.

Moreover, the inner cutter support 13a is linked to a motor 16 via a conversion mechanism 15 that converts rotation into reciprocating motion, and by operating the motor 16, the outer cutter 1
It is reciprocated in the longitudinal direction of 2. At this time, the cutting blade body 14
reciprocates in the longitudinal direction (direction of arrow A) while slidingly contacting the inner surface of the outer cutter 12. Incidentally, since this structure is well known, its explanation will be omitted.

As shown in FIGS. 2 and 3, the outer cutter 12 has a large number of quadrilateral hair introduction holes 17 formed in a mesh pattern. ，
17b is formed. The blade sides 17a and 17b are inclined at a predetermined angle with respect to the cutting blade body 14, and the cutting blade body 1
4 corresponds to each blade side portion 17a, 17b, the cutting blade body 1
4 to form included angles α and β that widen in the width direction.

[0022] Each of the hair introduction holes 17 is set such that the opening angles α and β of adjacent ones in the reciprocating direction of the inner cutter 14 and the width direction perpendicular to the reciprocating direction are opposite to each other. There is. Further, each hair introduction hole 17 is formed in a trapezoidal shape that opens in the width direction. As a result, a pair of included angles α and β formed within each hair introduction hole 17 widen in the same direction. Further, the included angles α and β are all formed equally.

Next, the operation of the electric shaver having such a structure will be explained.

In such a configuration, the blade edges 17a, 1 of the hair introduction holes 17 adjacent to each other in the direction (width direction of the outer cutter 12) perpendicular to the direction of movement of the inner cutter 13 (direction of arrow A)
Since the expanding directions of the included angles α and β formed between 7b and the cutting blade body 14 are opposite to each other, the hair 20 was tilted to either side in the width direction of the outer cutter 12. However, when the outer cutter 12 is moved in the width direction, the hair 20
is cut by either one of the hair introduction holes 17 adjacent to each other in the width direction of the outer cutter 12.

Furthermore, the cutting edge portions 17a and 17b of the whisker introduction hole 17 adjacent to each other in the moving direction of the inner cutter 14 and the cutting blade body 14
The expanding directions of the included angles α and β formed between the two sides are opposite to each other. Moreover, since each hair introduction hole 17 is formed in a trapezoidal shape that opens in the width direction, a pair of included angles α and β formed in each hair introduction hole 17 are in the same direction (in the width direction of the outer cutter 12). 1), the width of the hair introduction hole 17 in the longitudinal direction of the outer cutter 12 is wider in one of the width directions of the outer cutter 12.

As a result, the moving direction of the inner cutter 14 (outer cutter 12
Even if the beard 20 has fallen to either side (longitudinal direction), when the outer cutter 12 is moved in the longitudinal direction, the beard 20
0 corresponds to the wide part of each whisker introduction hole 17, the whiskers 20 enter the whisker introduction hole 17 from the wide part,
One of the pair of blade edges 17a, 17b of the hair introduction hole 17 (
The cut is reliably made between the inner blade 14 and the blade edge (positioned in the direction in which the hair 20 falls).

[0027] Also, the outer cutter 12 is rotated in the longitudinal direction (direction of arrow A).
If the hair 20 does not correspond to the wide part of each hair introduction hole 17 when the outer cutter 12 is moved in the longitudinal direction, the hair 20 will not fit into the next hair introduction hole 17. I will be entering. That is, in this case, the whisker 20 enters the whisker introducing hole 17 from the wide part corresponding to the next wide part of the whisker introducing hole 17, and passes through the set of blade edges of the whisker introducing hole 17. Cutting is ensured between one of the blades 17a and 17b (the blade edge located in the direction in which the hair 20 falls) and the cutting blade 14 of the inner blade 13.

[0028]

[Effect] As explained above, the present invention has an outer cutter that is formed in a semi-cylindrical shape and has a large number of quadrilateral hair introduction holes formed in a mesh pattern, and a large number of plate-shaped cutters that are pressed against the inner surface of the outer cutter. and an inner cutter that moves back and forth in the longitudinal direction of the outer cutter while slidingly contacting the inner surface of the outer cutter, and each hair introduction hole of the outer cutter extends in the width direction of the outer cutter. A pair of opposing blade edges are inclined at a predetermined angle with respect to each cutting edge body of the inner cutter, and when the cutting edge body corresponds to the blade edge portion, the cutting edge body and the blade edge portion are In an electric shaver in which a pinched angle that expands in the width direction of the outer cutter is formed in between, the hair introduction hole is formed in a trapezoidal shape that opens in the width direction of the outer cutter, and the cutter is formed in a trapezoidal shape that opens in the width direction of the outer cutter, and in the reciprocating direction of the inner cutter and the direction of this reciprocating motion. Since the electric shavers are arranged so that the expansion directions of the included angles of adjacent outer cutters are opposite to each other in the width direction of the outer cutters, which is orthogonal to Even under conventional conditions, where the beard does not enter the beard introduction hole and is not cut well due to conditions such as the timing of the movement of the blade and the state of the beard falling in a direction that intersects the direction of movement of the inner blade, Hairs can easily enter through the hair introduction hole and be cut well.

[0029] Furthermore, if the included angles formed between the edge of the hair introduction hole provided in the outer blade and the cutting edge of the inner blade are all equal, the load when cutting the hair will be reduced. is made uniform at the edge portions of all whisker introduction holes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram illustrating the working relationship between the outer cutter and the cutting body of the inner cutter of the electric shaver according to the present invention.

FIG. 2 is an enlarged view of the main part of FIG. 1;

FIG. 3 is an overall developed view of the outer cutter having hair introduction holes shown in FIGS. 1 and 2;

FIG. 4 is a longitudinal cross-sectional view of the electric shaver having the outer cutters shown in FIGS. 1 to 3. FIG.

FIG. 5 is a longitudinal sectional view of a conventional electric shaver with outer cutters.

FIG. 6 is an explanatory diagram illustrating the operational relationship between the outer cutter and the cutting edge body of the inner cutter shown in FIG. 5;

7 is an enlarged view of a main part of the hair introduction hole shown in FIG. 6. FIG.

[Explanation of symbols]

12...Outer blade 13...Inner blade 14...Cutting blade body 17... Beard introduction hole 17a, 17b...Blade side part α, β…include angle

Claims (2)

[Claims] [Claim 1] A semi-cylindrical outer blade in which a large number of quadrilateral hair introduction holes are formed in a mesh pattern, and a large number of plate-shaped cutting blade bodies that are pressed against the inner surface of the outer blade. an inner cutter that reciprocates in the longitudinal direction of the outer cutter while slidingly contacting the inner surface of the outer cutter, and a pair of opposing blade edges extending in the width direction of the outer cutter of each hair introduction hole of the outer cutter; is inclined at a predetermined angle with respect to each cutting edge body of the inner cutter, and when the cutting edge body corresponds to the edge portion, there is a space between the cutting edge body and the edge portion in the width direction of the outer cutter. In an electric shaver that forms an expanding included angle, the hair introduction hole is formed in a trapezoidal shape that opens in the width direction of the outer cutter, and also in the reciprocating direction of the inner cutter and in the width direction of the outer cutter perpendicular to the reciprocating direction. An electric shaver characterized in that the electric shavers are arranged so that the expanding directions of the included angles of adjacent ones are opposite to each other. 2. The electric shaver according to claim 1, wherein each of the included angles is formed equally.