JPS59137085A - Electric razor - 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] (a) Field of Industrial Application The invention relates to an electric shaver equipped with a drive speed conversion function of sun/moon, and speed as a means for recognizing various drive speeds of the inner cutter. Display mechanism (-related).

(Note 1) Conventional electric razors improve their sharpness depending on the driving speed of their inner blades, and the optimal driving speed differs depending on the thickness of the beard.

@Table 1 shows the difference in how an electric razor shaves between people with thick beards and people with light beards. For example, people with dark skin may argue that ILI, which has a slower driving speed of the inner blade, will give a shorter shave (2), whereas people with lighter skin will claim the opposite (ILI, which has a faster driving speed).
Hl claims to be able to shave very short, and each individual has a variety of opinions on this.

However, with conventional electric razors, the area to be shaved (= combined with a razor blade Z for sideburns, or a comb blade around the outer blade to attract beard hair, etc.) can be used to create a stinging effect. Although efforts were made to improve the quality of hair, they were all passive and indirect methods, so it was impossible to obtain a shaved taste that matched each person's taste.

(C) Purpose of the Invention The present invention has been made in view of the problems (2) of the prior art as described in L. The drive speed of the inner cutter is changed by varying the rotation speed of the drive motor, Moreover, the purpose is to provide an arrangement that improves the usability of the variable operation knob.

2) Structure of the Invention An outer cutter is arranged on the upper part of the synthetic resin main body case, a sharply serrated cutter is arranged near the outer cutter, and a large-area switcher knob is used to start the inner cutter that slides on the inner surface of the outer cutter. Equipped with a small area edge drive knob to set the edge blade to the operating position.
In addition, the two knobs are arranged in parallel (-proximity) and have the same sliding direction (2) below the side knob (2) a switching operation knob for switching the drive speed of the inner cutter is provided at the sliding mark (-), and The inner surface of the main body case of the display Z has a pattern that increases or decreases the amount of appearance according to the increase or decrease of the drive speed of the inner blade (1).

Example) An example of the reciprocating electric shaver with razor blades according to the present invention will be explained below.

The main body case (fl) made of synthetic resin is housed in an outer cutter frame (3) made of thin metal plate (2), which has a large number of hair introduction holes on its upper surface, and an outer cutter frame (3) formed from 7 aluminum die-casting. Frame (3) 7all-mounted and engaged. A sharpening blade (4) is attached to the front surface of the main body case (1) so as to be able to be drawn out in a half turn.

(5) is disposed within the outer cutter frame (3) and is connected to the outer cutter (2).
It is a large-area starting switch knob that starts the inner blade (not shown) that can slide on the inner surface Z of the 1). A blade drive knob (6) is provided, and both slide knobs (5) (
61'i' can be slid in the same direction.

In addition, the front side of the main body case (1) (2 is a switching switch (S) for changing the driving speed (frequency) of the inner cutter.
An operating knob (7) of W2) is provided, and the knob (7) can take three positions: high speed [1], medium speed (I (4)), and low speed (T-).

A vertically elongated hole (8), a horizontally elongated hole (9), and a circular hole 00) are provided on the front surface of the main body case (1), respectively, as shown in FIG.

The operation knob (7) is provided in the vertical hole (8) so as to protrude from the inner surface of the main body case (1), and the cough knob (7) is provided with a sliding guide that is wider than the vertical hole (8). board ul
:c is integrally formed, and a notch (121) large enough to fit the tip of a screwdriver is formed in the approximate center of the knob (7).A charging indicator lamp 1131 is attached to the circular hole (lO).

A contact piece (141) is welded to the back side of the sliding guide plate fill. contact (see Fig. 6 (C1, fdl)).

06) is a display body extending orthogonally from the sliding guide plate (111).The display body (16) has a pair of elastic legs for articulation (171+181) on the upper negative side, and a sliding plate on the protrusion on the other side. A display panel 1201 is formed with a movement guide hole 09 and has a stair-shaped pattern (201)''l attached to the front surface of the display body 06). The figure 8-shaped articulating dowel 1211 and the sliding guide boss (22
1 are provided corresponding to the leg portions +171+18) and the guide holes 00, respectively. A convex lens 123) made of transparent resin is attached to the horizontally elongated hole (9), and the display panel (2o) of the display body 116) is accessed from the outside by the convex lens r2.
It can be recognized via 3'lf.

When the operation knob (7) is at low speed (Ll position (-), the display panel (minimum area part (201) of the 2C5 symbol)
is displayed externally through the convex lens (231), and the intermediate part (202) is
At the high speed (Hl position), the maximum area part (205) is displayed externally.Moreover, since the display body (I6) has an articulating mechanism, the display body (16) can be adjusted to the LmM position of the operation knob (7). ,M
→The display moves fastest at the opening position of L, and the user (second) looks through the convex lens (231) as if the display were continuously increasing and decreasing in the longitudinal direction of the convex lens C23j.

In addition, a back surface of the main body case (1) (the second is a protrusion C1 part 125 constituting the articulation mechanism of the edge blade FJl drive knob (6)) is formed, and the edge blade drive knob (6) ) is locked between the projections f24)+251.

(2η is the lock button of the starting switch knob (5), which is properly engaged and detached from the back of the main body case (+).
5) Control the movement.

1281 is a storage part for the bottle plug t>q+ +'(o), and the bottle plug I'! 911: (0) receives the inert current supplied from the household outlet, and the main body case (1)
Internal charging 'battery m1lQ' or direct motor H+''
- supplying electric current;

Next, the circuit diagram shown in FIG. 3 will be explained.

Inside the main body case (1), a drive motor (capturing and rectifying diode (D5) and Schottky diode (Di) (D
2) and a rechargeable nit trt+ as a power source are housed, and each is connected as shown in FIG. 3 (al).

In other words, the battery (Bl), the rectifier diode (D3), and the Schottky diode (DI) (D2) are connected in series to the motor (Ml).The Schottky diodes (DI) (D2) are All the terminals of the operation knob (
7) A changeover switch (SW2) operated by c2 (two connected), and a rectifier diode (D6) is connected to one end of the secondary fltl+ of the step-down transformer (Tl).

When the starting switch (swl) operated by the starting switch knob (5) is pushed up one step towards -L from the lowest OFF position, the starting switch (swi) is closed, and the motor (the part between them is rotated and the inner blade is rotated). At this time, when the selector switch (sw2) is in the high speed fH1 position, the battery enters the selector switch (5W2) from the ■ side of the rechargeable battery fBl through point (pl), passes through point (p2), and then moves back and forth. Electric current is supplied to the motor (circle),
pm) (see @3 Figure +1) l). When the changeover switch (SW2) is in the medium speed fMl position,
It enters the Schottky diode (D2) from the ■ side of the rechargeable battery (Bl) through point (Pl) → (P5)Y, and the electric motor M receives a voltage drop due to the diode (D2).
575 Qrpm) (see tCI in Figure 3).

When the changeover switch (sw2) is in the low speed fLl position, the motor [M
A voltage is applied to the diode (DI) (D2
)(: Due to the voltage drop due to
4i Figure 3 (see dl).

In this embodiment, a Schottky diode is used as the diode. In the case of Schottky diode, the fourth
As shown by lel in the figure, when the threshold voltage (OIV) is exceeded, the current suddenly begins to flow.

Therefore, it becomes something like the motor (dark load characteristic curve) shown in Fig. 3 (C) (2), which is indicated by (α) in Fig. 5. The rate at which the current increases as the voltage increases is slower than that of the Schottky diode (1), and is similar to (γ
) is obtained. Here, the rated load (t
Comparing the effects of both on l, (N2) in Figure 5 is obtained.
and (N2'), a difference in rotational speed occurs. In this way, using a Schottky diode (= Schottky diode) has the advantage that a larger motor rotational speed can be obtained at the rated load compared to a general diode C2.

In addition, when two Schottky diodes are connected in a row to a motor (incorporated), the threshold voltage is doubled, so the voltage applied to the motor 1M1 (:) is further reduced.

However, as shown in Figure 5, the load characteristic curve in this case is almost the same as the slope of α1, and compared to the case where two general diodes are connected in series, the rated load (tl The rotation speed at NK>N5'.
(ε) in the figure shows the load characteristic curve when the motor (MIY connection) is connected straight to the power supply.

(f) Effects of the Invention As described above, the present invention has two outer cutters disposed in the upper part of the main body case, and an inner cutter that slides on the inner surface of the outer cutter in the vicinity of the outer cutter. The switch is equipped with a switch-inner knob for starting the switch and a switch-edge knob for setting the switch blade to the operating position, and both the switches are arranged in parallel and close to each other so that their sliding directions are the same (2. Below (=
Since the operating knob for changing the drive speed of the inner cutter is provided by Sliding, the edge cutting blade can be driven in one step, improving usability, and while the inner cutter or edge cutting blade is in motion. Also, the two operation knobs are located on the same side, allowing you to easily change the drive speed of the inner blade or edge blade, allowing you to easily change the drive speed of the two inner blades or the edge blade. In addition to being effective, since the switches are placed in one place (2), the design effect of 7 is great and it is extremely practical.In addition, an indicator is provided according to the drive speed of the inner blade. This allows you to select an appropriate speed and check it visually.

[Brief explanation of the drawing]

The drawings relate to a reciprocating electric shaver according to an embodiment of the present invention; FIG. 1 is a front view thereof, FIG. 2 is an exploded perspective view of the main parts, FIG. 3 ta and + are circuit diagrams, and fbl is a changeover switch. H
(11 is the circuit diagram of the main part when it is also in the L position, (cl is the main part circuit diagram when it is in the M position, Figure 4 is the main part circuit diagram when it is in the L position.) Figure 5 shows the current-voltage curve diagram of Figure 3 (111, +(+1, (
(Load characteristic diagram at 111 m, Fig. 6 +81 is a front view of the main part of Fig. 1, (b) is a back view of +a+, (cl is ('i
BB' sectional view of ll, 1 (11 is (1) I Q) A
-A' sectional view and FIG. 7 are exploded perspective views of the display body. (1)...Body case, (2)...Outer blade, (4)...
・Kiwazori blade, (5) ・Start switch knob, (6
1...Kiwazori-blade vessel) j knob, (7)...Switching operation knob, (16)...Display body. 520- - residence; meditation

Claims (1)

[Claims] (i) An outer blade device is installed on the top of the main body booth, a sharp edge is arranged near the outer blade, and a starting switch 7 knob and a sharp edge Z are used to start the inner blade that slides on the inner surface of the outer blade. Use '5Lif
Equipped with a sharpening blade drive knob for setting C2, and a switching operation knob for changing the speed of the inner blade by sliding automatic pressure (
= Provided (2) The inner surface of the main body case of the display body 7 having a pattern that increases or decreases the amount of appearance according to the increase or decrease in the driving speed of the inner blade (2) An electric shaver provided with a rotating mechanism.