JPS6258269B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reciprocating electric shaver.

The inner blades of a conventional reciprocating electric shaver are arranged in multiple rows in the vibration direction, with the inner blades arranged perpendicular to the direction of reciprocating vibration. On the other hand, the cutting hole of the plate-shaped outer cutter that circumscribes this is often formed into a long groove shape in order to improve the introduction of whiskers, and is formed with a slight scissor angle with respect to the inner cutter blade.

However, when the surface of the outer blade, which has an arcuate cross section, is pressed against the 1.5 to 3 days worth of beard that is normally shaved and moved in the shaving direction, much of the pushed down beard is due to the elasticity of the beard. It was found that the building was tilted in the direction of the reciprocating vibration. Therefore, since the longitudinal direction of the long grooved blade hole is nearly parallel to the shaving direction, it is difficult to introduce uncut hair that has fallen down, and there is a drawback that the effect of introducing hair by one shaving operation is small.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a reciprocating electric shaver that can improve the beard introduction effect.

A first embodiment of the invention is shown in FIGS. 1 to 5. That is, the outer cutter 1 formed of a metal plate of this reciprocating electric shaver has a plurality of strip-shaped zones 2 on its surface having a longitudinal direction parallel to the direction of reciprocating vibration (direction X) as shown in the figure. A group of small circular blade holes 4 are formed in a central zone 3 of a predetermined width located at the center, and a group of small circular blade holes 4 are located on both sides of the central zone 3. The width of the pair of intermediate zones 5 and 5' is the range in which the outer cutter 1 contacts the skin when it is pressed against the skin with the central zone 3 in the center in a curved state with an arc cross section (angle α in Fig. 2). A group of long groove-shaped cutting holes 6, 6' is formed therein, and the cutting holes 6, 6' are formed therein.
Skew angle θ ₁ in the longitudinal direction of 6′ with respect to direction Y
The intermediate zones 5 and 5' are tilted at an angle of about 45 degrees, and the direction of the tilt is symmetrical with respect to the central zone 3. intermediate zone 5,
The outer zones 7, 7' parallel to the outside of the outer cutter 1
occupies the remaining area in the direction Y, and has a long groove-shaped cutting hole 8,
8' is formed, and the longitudinal direction of each blade hole 8, 8' is set so that the skew angle _θ2 is approximately 20 degrees with respect to the direction Y, and the blade holes 8, 8' are mutually located in the central zone. It is symmetrical with respect to 3. 9 is a mounting hole for the outer cutter 1.

On the other hand, in the inner cutter 10, each inner cutter blade 11 is held by an inner cutter holding member 12 and arranged in a row in the vibration direction X,
In the plane of the inner cutter 10 shown in FIG.
14' is inclined at about 25 degrees in the direction of the inclination of the blade holes 6, 6' of each zone 5, 5' with respect to the direction Y, and the corresponding parts 15, 15' of the outer zones 7, 7' are parallel to the direction Y. I'm trying to make it happen. As a result, when the inner cutter 10 is installed inside the outer cutter 1, the long grooved blade holes 6, 6', 8,
The scissoring angle between the inner cutter blade 11 and the inner cutter blade 11 is approximately 20 degrees in both the outer zones 7, 7' and the intermediate zones 5, 5'.

Figure 5a shows a state in which the outer blade 1 of this electric shaver is pressed against the skin P, and Figure 5b shows a state in which the beard Q is pushed down by the outer blade 1 at that time. Z
indicates the shaving direction, which is parallel to the direction Y. In the shaving operation, when the outer cutter 1 is pressed against the skin P centering around the center zone 3, the beard is introduced into the cutter hole mainly as follows. First, by pressing against the skin P, the whiskers Q of the skin P are introduced into the blade holes in the center zone 3 and intermediate zones 5, 5' where the outer cutter 1 contacts, and are cut by the vibration of the inner cutter 10. Furthermore, when the outer cutter 1 is moved in the shaving direction Z with the outer cutter 1 pressed against it, the unshaved hair Q is introduced into the blade holes of the central zone 3 and intermediate zones 5 and 5' during the movement. The beard Q left unshorn in the intermediate zone 5 is introduced into the blade hole 4 in the central zone 3 and cut. Of course, when the body of the electric razor is moved at an angle to the skin while shaving, hairs are introduced into the blade holes in the outer zones 7, 7' and cut. During these processes, the beard that is longer than one day and has been pushed down by the outer blade 1.
Q' is easily introduced into the blade hole 6 because the longitudinal direction of the blade hole 6 in the intermediate zone 5 is located approximately parallel to the direction in which Q' falls. By the way, as shown in Fig. 4, the cut state of the blade holes 6, 6' in the intermediate zones 5, 5' is due to the component length of the blade holes 6, 6' in the direction X. It cannot be shaved off and a small amount remains. In this case, by moving the electric razor in the shaving direction, the unshaven hair is introduced into the small circular blade hole 4 in the central zone 3 and is completely cut off as shown in FIG. At this time, intermediate zone 5,
Since the beard left unshaved at 5' is short, it is easily introduced into the small circular blade hole 4 and easily cut.

With this configuration, it was virtually confirmed that hair that had grown for more than one day could be effectively introduced into the blade hole, and hair removal could be performed smoothly.

A second embodiment of the invention is shown in FIGS. 6 and 7. In other words, this reciprocating electric shaver is
In the first embodiment a pair of intermediate zones 5, 5'
Only the inclination direction of the long grooved blade holes 6, 6' is the same direction with respect to the central zone 3, and the intermediate zone corresponding portions 14, 1 of the inner blade 11' correspond to this.
4' is tilted in the same direction as those tilting directions while maintaining a scissor angle of 20 degrees, and the central zone corresponding portion 13 is also tilted in a straight line in the same direction. As a result, the bending structure of the inner blade 11' is simpler than in the first embodiment, and the same effects as in the first embodiment are obtained. Therefore, the other symbols are the same as those in the first embodiment.

As described above, in the reciprocating electric shaver of the present invention, the outer blade has an intermediate zone that contacts the skin on both sides of the central zone, and a long groove-shaped blade hole that is largely inclined with respect to a direction perpendicular to the vibration direction. By forming a group and correspondingly tilting the corresponding portion of the inner blade to form a scissor angle, the effect of introducing more than one day's worth of hair can be improved and shaving can be made more efficient.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the relationship between the outer cutter and the inner cutter in the outer cutter unfolded state of the first embodiment of the present invention;
The figure is a side view of the inner blade, Figure 3 is a sectional view showing how the beard is cut by the blade hole in the central zone, Figure 4 is a sectional view showing how the beard is cut by the blade hole in the intermediate zone, and Figure 5 is a sectional view showing how the beard is cut by the blade hole in the middle zone. An explanatory diagram showing the state of the beard when the outer cutter is pressed against the skin, FIG. 6 is a plan view showing the relationship between the outer cutter and the inner cutter in the outer cutter unfolded state of the second embodiment, and FIG. It is a side view of an inner cutter. 1...Outer blade, 3...Central zone, 4...Small circular blade hole,
5, 5'...middle zone, 6, 6'...long groove blade hole, 7,
7'...Outer zone, 8, 8'...Long groove hole, θ ₁ , θ
₂ ... Skew angle, X... Reciprocating vibration direction, Y... Direction X
direction perpendicular to.

Claims (1)

[Scope of Claims] 1. A central zone having a group of outer blade holes with a predetermined width and a longitudinal direction parallel to the direction of reciprocating vibration, and a central zone having a group of outer blade holes arranged continuously in parallel on both sides of this central zone and in contact with the skin around the central zone. It is divided into a pair of intermediate zones having a width that comes into contact with the skin along with the central zone, and a pair of outer zones that are continuously parallel to each other on the outside of this intermediate zone. The intermediate zone has a long groove shape, and its longitudinal direction has a large skew angle with respect to the direction perpendicular to the vibration direction, and the outer zone has a long groove shape. an outer cutter whose blade hole has a long groove shape and whose longitudinal direction forms a small skew angle with respect to the direction perpendicular to the vibration direction; A reciprocating electric shaver equipped with inner blades each having a constant scissor angle for each blade hole group in the zone and outer zone. 2. The long grooved blade holes of the pair of intermediate zones are inclined symmetrically with respect to the central zone, the inner blade is parallel to the central zone and the pair of outer zones in a direction perpendicular to the vibration direction, and The reciprocating electric shaver according to claim 1, which is inclined to form a scissor angle with respect to the intermediate zone. 3. The long grooved blade holes of the pair of intermediate zones are inclined in the same direction with respect to the central zone, the inner blade is parallel to the pair of outer zones in a direction perpendicular to the vibration direction, and the intermediate zone and the central The reciprocating electric shaver according to claim 1, which is inclined with respect to the zone so as to form a scissor angle with the blade hole in the intermediate zone.