JPS61191383A - 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 The present invention relates to an electric shaver equipped with a shaving blade when moving in and out, and its main object is to facilitate driving operation and cleaning of the shaving blade.

In conventional electric razors, when the slide switch knob is slid to the first step, the inner blade drive mechanism is activated, and when the switch knob is further slid to the second step, the inner blade drive mechanism remains activated and the razor blade is turned off. It protruded to the outside of the front of the main body case, and in this protruding position, the razor blade was connected to and driven by the inner blade drive mechanism.

According to this, it is possible to switch between the normal shaving state and the shaving state by a series of step-by-step sliding operations of one sui nochinop, and the shaving state is driven when the shaving blade is protruded, making it easy to operate. It is excellent in this respect. However, in this case, the razor blade is always driven when it is in the protruding position, so it is not possible to clean the razor blade in a non-driven state with a rechargeable electric shaver. Furthermore, in electric shavers that use a dry cell battery or an external power source as a power source for the drive motor of the inner blade, it is possible to operate the razor blade in a non-driving state by removing the dry cell battery or turning off the external power source.

This is troublesome.

In order to eliminate this inconvenience, a switch knob dedicated to turning on and off the inner blade drive mechanism and a knob dedicated to advancing and retracting the edge razor blade are provided separately, so that the edge razor blade can be protruded and operated without being driven. It has been proposed that However, this method has a drawback in that it is not easy to operate, since it is necessary to move the razor blade in and out in addition to turning the switch knob on and off when making distance measurements.

Focusing on this fact, this invention takes advantage of the advantage of the method of sliding the switch knob in two steps from the switch-off position, that is, the excellent operability, and uses a dedicated knob to move the razor blade in and out. It is possible to operate the protrusion after the non-driving state.

The purpose is to make it possible to clean the razor blade without any trouble.

Hereinafter, a specific example thereof will be explained based on the drawings.

The drawing shows an example of a rechargeable electric shaver, which has an inner blade 2 on the top of a main body case 1.

An inner blade drive mechanism 3 that reciprocates the inner blade 2 in the left and right lateral directions with a constant small stroke, a razor blade 4 having a clipper-type fixed blade 4a and a movable blade 4b, and a porous screen-shaped outer blade. A blade 5 is detachably attached via an outer blade holder 6, and the inner blade 2 is in sliding contact with the inner surface of the outer blade 5.

In FIG. 2, the inner blade drive mechanism 3 fixes a balance weight 8 to the motor output shaft 7, engages a pin 9 implanted in the weight 8 with a vibrator 10, and causes the vibrator 10 to vibrate left and right. Assume that the inner cutter 2 is connected to the vertical pin 11 from the vibrator 10.
The inner cutter 2 elastically contacts the inner surface of the outer cutter 5 and reciprocates in the left and right lateral directions. and.

A bifurcated protrusion 13 for driving a razor blade is protruded from the front surface of the camera element 10. The function of this protrusion 13 will be described later.

In FIGS. 2 and 3, the outer razor blade 4 is attached to the outer blade holder 6.
1 is pivoted to the main body case 1 through left and right pins 4 so as to be able to swing vertically, and as shown in the imaginary line in FIG. It is operated to switch between a posture in which it swings and protrudes forward and a retracted posture shown by the solid line in FIG. Then, only when the edge razor blade 4 is in the protruding position, the tongue piece 15 protruding from the upper part of the edge razor blade 4 faces inward of the case and engages with the aforementioned bifurcated protrusion 1'3. The movable blade 4b of the razor blade 4 is connected to the inner blade drive mechanism 3 and becomes capable of reciprocating movement.

Inside the main body case 1, a rechargeable battery 16, an electric motor (not shown) driven by the battery, and electric circuits for charging and driving the motor are incorporated. There is a sliding switch knob 17 that is operated to switch between the two positions.

When the switch knob 17 is in the lower position, it is in the switch knob state, and when the knob 17 is pushed up to the middle position, the built-in electric motor is energized and the inner blade drive mechanism 3 is operated, and the '17 is pushed up to the upper position, the edge razor blade 4 protrudes forward while the inner cutter 2 is driven, and at the same time as the tongue piece 15 engages with the forked protrusion 13, the edge razor blade 4 is moved forward. It becomes a driving state.

Next, at this time, the mechanism for moving the razor blade 4 in and out is shown in FIGS. 3 and 4.
To explain based on the figure, a pair of left and right connecting pins 18 are provided protruding from the back surface of the switch knob 17.

Each pin 18 penetrates into the case through the left and right vertical holes 19 drilled in the front wall of the main body case 1, and the protruding tip of each pin 18 connects to the switch operation piece 20 installed inside the main body case. The switch knob 17 and the switch operation piece 20 are integrated into the hole 21 by being inserted into and fixed thereto.

A positioning arm 22 that can be elastically deformed in the left-right direction is connected to the lower edge of the switch operation piece 20, and an interlock that can be elastically deformed in the front-rear direction (internal and external directions) is attached to the upper edge of the switch operation piece 20. Arms 23 for use are connected to the left and right. The left and right positioning arms 22 come into contact with and pass over the upper and lower protrusions 24 protruding from the inner surface of the case, thereby forming the switch operation piece 20 and the switch knob 17 integrated therewith.
This is for positioning and regulating the three positions of upper, middle and lower. When the left and right interlock arms 23 are at the lowest position of the switch operation piece 20.

This is for abutting and securing the lower edges of protrusions 25 provided on both sides of each vertically elongated hole 19 to prevent the operation piece 20 from moving upward.

The switch knob 17 is equipped with a lock release button 26 that can be freely retracted.
7 is connected to the interlock arm 23 through each vertical hole 19.
When facing the tip of the interlock arm 23 and pushing the button 26 inward into the case, the tip of the interlock arm 23 is pushed by the pin 27 and elastically deforms backwards and detaches from each protrusion 25, which causes the switch knob 17 to be pushed up. becomes operable.

Inside the main body case 1, a plate-shaped baffle blade extension/retraction operating member 30 is arranged to be movable up and down.

A hook portion 31a at the tip end of the arm 31 extending upward from the advancing/retracting operation member 30 engages with the upper edge of the side end rib 32 of the razor blade 4, as shown in FIG.

Due to this engagement, when the extension/retraction operation member 30 is pulled downward, the edge razor blade 4 is swung up and protruded to the front of the case, and when the extension/retraction operation member 30 is pushed upward, the edge razor 4 is placed in the retracted position. Become.

Inside the main body case 1, there is a balance arm 34 which is pivotally supported between the left and right by a pin 33, and one end of the balance arm 34 is connected to the egress/retraction operation member 3o by a pin 35. The distal end of the abutting arm 36 connected from the switch operation piece 2o is arranged to abut against the other end of the balance arm 34. In this case, when the switch operation piece 20 is pushed up one step from the lower position to the middle position by operating the switch knob 17, the hook-shaped tip of the abutment arm 36 moves into the notch recess 37 formed at the other end of the balance arm 34. When the switch knob 17 is subsequently pushed up from the middle position to the upper position, the balance arm 34 swings in the direction of the hour hand, and the egress/egress operation member 30 is pulled down. The razor blade 4 protrudes at the end.

Further, when the operating piece 20 is pushed down from the upper position to the middle position, the hook-shaped tip of the contact arm 36 is pushed into the notched recess 37.
The balance arm 34 is rotated counterclockwise and the razor blade 4 is retracted. Operation piece 2
0 is further lowered from the middle position to the lower position, the abutment arm 36 is automatically removed from the balance arm 34.

An engagement recess 38 is formed on the side edge of the egress/egress operation member 30, and an operation knob 40 having a protrusion 39 that engages and disengages with the recess 38 slides on the outer surface of the side wall of the main body case l over two upper and lower positions. It is attached freely. Operation knob 40
The upper end of the protrusion 39 is elastically deformable in the inner and outer directions.
(This operation) is located on the inner surface side of the upper end of the tube 40.

and.

When the operation knob 40 is slid to the upper position and the egress/egress operation member 30 is in the raised position, the protrusion 39
are disengaged from the engagement recess 38 and are arranged to face each other.

In this case, the switch knob 17 is slid to the upper position, and when the razor blade 4 is protruding and being driven, the egress/egress operation member 30 is pulled down, so the operating knob 40 in the upper position is used for egress/egress operation. It does not engage member 30. In this state, the shaving operation is in progress. However, when the operating knob 40 is pushed inward of the case while the switch knob 17 is kept in the lower OFF position, the protrusion 39 engages with the opposing engagement recess 38. If the operation knob 40 is pressed down in this state, the razor blade 4 can be directly operated to protrude in a non-driving state. In this state, the razor blade 4 will be cleaned. When the operation knob 40 is pressed down, the protrusion 39 is engaged with the engagement recess 38, and when the operation knob 40 is pushed up, the razor blade 4 is retracted and the protrusion 39 is disengaged from the engagement recess 38. Return to original state. Incidentally, if the switch knob 17 is slid to the upper stage while the operation knob 40 is pressed down and the edge razor blade 4 is projected, the edge razor blade 4 will be automatically driven.

Note that the example shown in Figure 1 is as described above, but the operation knob 4
0 may always be engaged with or integrally connected to the egress/retreat operation member 30 and move together with the switch knob 17 when the switch knob 17 is switched between the middle position and the upper position.

As explained above, according to the present invention, in the normal shaving state in which the switch knob 17 is slid from the lower OFF position to the middle inner blade drive position, the switch knob 17 is pushed upward to the upper position. The edge razor blade 4 can be made to protrude in the driven state by simply pressing the switch knob 17, and the drive of the edge razor blade 4 can be stopped and retracted by simply returning the switch knob 17 from the upper position to the middle position, resulting in improved operability and safety. Excellent. Nevertheless, since the switch knob 17 can be set to the lower OFF position and the special operation knob 40 can be used to project the razor blade 4 in a non-driving state, cleaning the razor blade 4 is not a problem at all. You can do it without any problems.

Furthermore, as a means for enabling independent operation of the operation knob 40, the contact arm 36 and the balance arm 34 are provided between the switch operation piece 20 and the egress/exit operation member 30. 40 and the switch knob 17 so that they always move together, and the operation knob 4
Compared to a configuration in which a separate electric circuit is provided to cut off the motor drive when the razor blade 4 is extended when the razor blade 4 is extended, the structure of the present invention is simple and can be implemented at low cost.

Further, although this invention is particularly effective in a rechargeable electric shaver in which the inner blade drive mechanism 3 is always activated by turning on the switch knob 17 and cannot be turned off, it is not applicable to an electric shaver that uses dry batteries or an external power source. too,
Leave the batteries in.

Alternatively, it is convenient to be able to clean the razor blade 4 while it is connected to an external power source.

[Brief explanation of drawings]

The drawings show one embodiment of the electric shaver according to the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway side view, and Fig. 3 is a front view of the main parts seen from the back side. FIG. 4 is an exploded perspective view showing a mechanism for moving the razor blade forward and backward, which is one of the constituent members of the present invention, and FIG. 5 is a side view showing the operating state of the razor blade in its protruding state. 1... Main body case. 2...Inner blade. 3...Inner blade drive mechanism. 4... Edge razor blade. 5... Outer blade. 13... Bifurcated process. 15... Protrusion. 17...Switch knob. 20...Switch operation piece. 30... Exit/exit operation member. 34... Balance arm. 36...Abutment arm. 37...Notch recess formed in the balance arm. 38... Engagement recess provided in the exit/exit operation member. 39...Protrusion provided on the operation knob. 40...Operation knob. Procedural amendment (own ship March 7, 1985) Director General of the Patent Office Mr. Michibu Uga 2 Name of the invention Electric shaver 3 Relationship to the person making the amendment Patent applicant address Hojo-cho, Tagawa-gun, Fukuoka Prefecture 4680 Ikata Name Kyushu Hitachi Maxell Co., Ltd. (1) Full text of the specification (2) Drawing 6, Description of amendments 1, Name of the invention Electric shaver 2, Claims (1) Protruding posture in the main body case 1 The razor blades 4 and 1 are slidably mounted on the main body case 1 when the razor blades 4 and 1 can be driven by being connected to the drive system of the inner blade 2 in the protruding position. The razor blade 4 is equipped with a sliding switch knob 17 for switching the driving power source on and off, and a sliding operating knob 40 that is slidably attached to the main body case 1 and that operates the razor blade 4 to move in and out. The sliding direction of the switch knob 17 for switching the drive power of the inner blade 2 from off to on is set to be opposite to the sliding direction of the operating knob 40 for switching the PJ razor blade 4 from the retracted position to the protruded position. 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electric shaver equipped with a razor blade. [Prior Art] This type of electric shaver with a razor blade As a prior art related to an electric shaver, there is a configuration in which a switch knob for driving the inner blade and an operation knob dedicated to operating the razor blade are separately provided on the outer surface of the main body case. It is known that a sliding switch knob can be switched between three operating positions (up and down), and when the switch knob is in the lower position, the drive of the inner blade is stopped, and when the switch knob is in the middle position, it is not possible to move the inner blade. Then, the inner blade is driven, and when the switch knob is further slid to the upper position, the outer razor blade protrudes out of the case while the inner blade remains driven, and in this protruding position, the outer razor blade is interlocked and connected to the inner blade drive mechanism. According to this, it is possible to switch between the normal shaving condition and the shaving condition by a series of stepwise sliding operations of a single switch knob. However, when the shaving blade is in the protruding position, Since the razor blade is driven, there remains the inconvenience that it is not possible to clean the razor blade in a non-driven state.Therefore, we have created a separately provided dedicated operation knob that allows the razor blade to be moved in and out. Cleaning can be performed by protruding the razor blade in a non-driven state. [Problems to be solved by the invention] However, in the above-mentioned conventional example, the operation knob for advancing and retracting the razor blade is a button type. While shaving, it is easy to press the operating knob with the hand that is gripping the main body case, causing the razor blade to accidentally stick out. Such erroneous operations not only cause discomfort but also damage the skin. Even at the beginning of use, the razor blade tends to protrude unnecessarily. On the other hand, a configuration in which a slide-type switch knob dedicated to turning on and off the drive of the inner blade and a slide-type operation knob dedicated to moving the outer razor blade in and out have been separately provided has been proposed. However, in this case, both the sliding switch knob and the operating knob generally slide in the vertical direction, and the sliding operating direction of the switch knob is to turn on the drive power of the inner blade. The sliding operation direction for switching the razor blade from the retracted position to the protruded position is set in the same direction, generally upward. Therefore, at the beginning of use, I mistook the switch knob and the operation knob and operated the sliding operation, and when I intended to only drive the inner blade, I ended up accidentally causing the razor blade to protrude. The actual shaving work tends to take time. Also. When performing distance measurements, it is actually very inconvenient to slide the switch knob and operation knob separately in the same direction with the thumb of the hand that grips the main body case, and the user has to regrip the main body case each time. The operability is also poor. In other words, 1. For example, when you slide the operating knob upward with your thumb, your thumb will be fully extended, so
It was unsuitable for subsequent sliding operation of the operating knob upward. [Object of the Invention] The present invention has been proposed in order to eliminate such conventional problems. An object of the present invention is to provide an electric shaver with an edge razor blade, in which the on/off operation of the drive power source for the inner blade and the movement of the edge razor into and out of the razor cause erroneous operations. The goal is to make it possible to do it without any hassle. An object of the present invention is to provide an apparatus with excellent operability that allows the above-mentioned operation to be performed extremely smoothly with the thumb of the hand holding the main body case or with both hands. [Means for Solving the Problems] The present invention, as shown in FIG. 1, includes a main body case 1 and a razor blade 4. Switch knob 17 for turning on and off the drive power for the inner blade 2. and a dedicated operation knob 40 for moving the razor blade 4 in and out, and both the switch knob 17 and the operation knob 40 are of a sliding type. In this way, the sliding operation direction P of the switch knob 17 that switches the drive power of the inner blade 2 from OFF to ON, and the sliding operation direction P of the operation knob 40 that switches the razor blade 4 from the retracted position to the protruded position. It is characterized by being set in the opposite direction. [Operation] In such a case, the explanation will be given using an illustrated example in which the switch knob 17 and the operation knob 40 slide in the vertical direction. During normal shaving, only the switch knob 17 is slid to the upper switch-on position to drive the inner cutter 2. When the operating knob 40 is in the upper position, the razor blade 4 is in the retracted position. When the operating knob 40 is slid downward from the upper position,
The razor blade 4 protrudes at the edge. At that time, if the switch knob 17 is in the lower switch-off position, the edge razor blade 4 is protruded in a non-driven state and can be cleaned without any trouble when cutting. If blade 2 is driven, that is, switch knob 1
7 is slid upward and the operating knob 40 is slid downward. The state is now ready for shaving work. [Effects of the Invention] Therefore, according to the present invention as described above. For example, even if an attempt is made to slide the operation knob 40 in the switch-on direction by mistake for the switch knob 17 when shaving, the Pit razor blade will not be inadvertently protruded. There is no possibility of accidentally operating both knobs 17 and 40 at the same time. As a result, this is advantageous when both knobs 17 and 40 are disposed relatively close to each other and at approximately the same height. In addition, when shaving, the switch knob 17 and the operation knob 40 are slid in opposite directions, but at that time, the thumb of the hand that grips the main body case 1 is used to move one knob in one direction, and the thumb is turned in the opposite direction. It is easy to operate by moving the other knob in the other direction with the movement of . Even when operating both knobs 17 and 40 individually with both hands, if the directions of pushing and movement are opposite to each other, the operating forces are balanced and operability is good. [Example] The drawings show an example of an electric shaver according to the present invention. In FIGS. 1 and 2, the upper part of the main body case 1 includes an inner cutter 2, an inner cutter drive mechanism 3 that reciprocates the inner cutter 2 in the left and right directions with a constant small stroke, and a clipper-type When the razor blade 4 is provided with a fixed blade 4a and a movable blade 4b, an outer blade 5' is detachably attached via an outer blade holder 6, and an inner blade 2 is attached to the inner surface of the outer blade 5. Sliding contact. In FIG. 2, the inner blade drive mechanism 3 has a balance weight 8 fixed to the motor output shaft 7, and an eccentric pin 9 implanted in the weight 8 is engaged with the vibrator 10, so that the camera element 10 can be moved left and right. It vibrates, and has a structure in which a holder 12 of an inner cutter 2 is connected to a shaft 11 that stands up from a vibrator 10, and the inner cutter 2 elastically contacts the inner surface of the outer cutter 5 and reciprocates in the left and right lateral directions. move. and. A bifurcated protrusion 13 for driving the cutting blade is protruded from the front surface of the vibrator 10. The function of this protrusion 13 will be described later. In FIGS. 2 and 3, the outer razor blade 4 is attached to the outer blade holder 6.
The upper end of the main body case 1 is pivotally supported via left and right pins 14, as shown in the imaginary line in FIG. It is operated to switch between the posture in which it swings upward by 90 degrees and protrudes forward, and the retracted posture shown by the solid line in Fig. 9.Then, only when the edge razor blade 4 is in the protruding posture, the edge razor blade 4 is moved forward. Tongue piece 1 protruding from the top
5 faces inward of the case and engages with the aforementioned bifurcated protrusion 13, and the movable blade 4b of the razor blade 4 is connected to the inner blade drive mechanism 3 and becomes capable of reciprocating movement. A rechargeable battery 16, an electric motor (not shown) driven by the rechargeable battery 16, and electric circuits for charging and driving the motor are built into the main body case 1.The front of the main body case 1 has three stages: top, middle, and bottom. There is a sliding switch knob 17 that is operated to switch between the two positions. When the switch knob 17 is in the lower position, the switch is off, and when the knob 17 is pushed up to the middle position, the built-in electric motor is energized and the inner blade drive mechanism 3 is operated, and the knob 17 continues to operate. When pushed up to the upper position, inner blade 2
While in the driven state, the edge razor blade 4 projects forward, and at the same time as the tongue piece 15 engages with the bifurcated protrusion 13, the edge razor blade 4 becomes driven. Next, the mechanism for moving the razor blade 4 in and out using the switch knob 17 will be explained based on FIGS. 18 protrude into the case through the left and right vertical holes 19 bored in the front wall of the main body case 1, and the protruding tips of the respective pins 18 are inserted into the switch operation piece 20 installed inside the main body case.
The switch knob 17 and the switch operating piece 20 are integrated into each connecting hole 21 formed in the switch knob 17 and fixed thereto. A positioning arm 22 that can be elastically deformed in the left-right direction is installed on the lower edge of the switch operation piece 20, and a locking arm that can be elastically deformed in the front-rear direction (inside-outside direction) is installed on the upper edge of the switch operation piece 20. 23 are consecutively installed on the left and right. The left and right positioning arms 22 position and regulate the switch operation piece 20 and the switch knob 17 integrated therewith in three positions: upper, middle, and lower by coming into contact with and passing over the upper and lower projections 24 protruding from the inner surface of the case. It is for. When the switch operation piece 20 is at the lowest position, each of the left and right lock arms 23 has a protrusion 2 provided on both sides of each vertically elongated hole 19.
It abuts and engages with the lower edge of 5 to prevent the operation piece 2 from moving upward. The switch knob 17 is equipped with a lock release button 26 that can be freely retracted.
7 faces the tip of the lock arm 23 through each vertical hole 19, and when the button 26 is pushed inward to the case, it is pushed by the pin 27 and the tip of the lock arm 23 is elastically deformed backward and released from each protrusion 25. It comes off, and now the switch knob 17 can be pushed up. Inside the main body case 1, a plate-shaped baffle blade extension/retraction operating member 30 is arranged to be movable up and down. A hook portion 31a at the tip end of the arm 31 extending upward from the advancing/retracting operation member 30 engages with the upper edge of the side end rib 32 of the razor blade 4, as shown in FIG. Due to this engagement, when the egress and egress operation member 30 is pulled downward, the edge razor blade 4 is swung up and protruded to the front of the case, and when the egress and egress operation member 30 is pushed upward, the edge razor blade 4 is placed in the approach position. . Inside the main body case 1, there is a balance arm 34 which is pivotally supported between the left and right by a pin 33, and one end of the balance arm 34 is connected to the egress/retraction operation member 30 by a pin 35. The distal end of the abutment arm 36 connected from the switch operation piece 20 is arranged to abut against the other end of the balance arm 34. In this case, when the switch operation piece 20 is pushed up one step from the lower position to the middle position by operating the switch knob 17, the hook-shaped tip of the abutment arm 36 touches the balance arm 34.
It engages in a notch recess 37 formed at the other end. Next, move the switch knob 17 from the middle position to the upper position.
When the step is pushed up, the balance arm 34 swings clockwise, which causes the ejection/retraction operation member 30 to be pulled down and the razor blade 4 to protrude. Also. When the operating piece 20 is pushed down from the upper position to the middle position,
Since the hook-shaped tip of the abutment arm 36 remains engaged with the notch recess 37, the balance arm 34 is rotated back in the counterclockwise direction, and the razor blade 4 enters. When the operating piece 20 is further lowered from the middle position to the lower position, the contact arm 36 is automatically removed from the balance arm 34. An engagement recess 38 is formed on the side edge of the egress/egress operation member 30, and an operation knob 40 having a protrusion 39 bonded to the recess 38 is slidable on the outer surface of the side wall of the main body case 1 in two positions, upper and lower. is installed on. Operation knob 40
The upper end of the protrusion 39 is elastically deformable in the inner and outer directions.
is located on the inner surface side of the upper end of this operating knob 40. and. When the operation knob 40 is slid to the upper position and the egress/egress operation member 30 is in the raised position, the protrusion 39
are disengaged from the engagement recess 38 and are arranged to face each other. In such a case, when not in use, the switch knob 17 is in the lower position and the operation knob 40 is in the upper position, and the extension/retraction operation member 30 is in the raised state and the razor blade 4 is in the retracted position. I'm taking it. Now leave switch knob 17 in the lower position. When the operation knob 40 is pushed inward of the case, the protrusion 39 thereof engages with the engagement recess 38 of the egress/retraction operation member 30. Subsequently, by sliding the operation knob 40 in the downward direction indicated by the arrow P'' in FIG. . In this state, the razor blade 4 will be cleaned. From the unused state, slide the switch knob 17 in the upward direction indicated by arrow P in FIG. 1 to the middle position. In parallel, when the operation knob 40 is slid in the downward direction of the arrow P'' in the manner described above, the edge razor blade 4 is driven in a protruding state, making it possible to perform edge shaving. Grip switch knob 1 with your left thumb
Push up 7 and then press operation knob 4 with your thumb extended.
0 and pull down the operating knob 40. However, since the switch knob 17 shown in the box is also used to operate the razor blade 4 to move in and out, especially when transitioning from shaving work to shaving work, the switch knob 17 is held in the upper position while the operating knob 40 is in the upper position. All you have to do is slide No. 17 from the middle position to the upper position. When the swing tip 17 is returned to the middle position from this state, the outer razor blade 4 takes the retracted position and only the inner cutter 2 is placed in the driving state again. Further, when the operation knob 40 is pressed down, the protrusion 39 is engaged with the engagement recess 38, and when the operation knob 40 is pushed up, the razor blade 4 is retracted and the protrusion 39 is removed from the engagement recess 38. It returns to its original state. and. When the operating knob 40 is pressed down and the switch knob 17 is slid upward to the middle position and then to the upper position while the razor blade 4 is protruding, the Fj* razor blade will be automatically driven. Become. [Another Embodiment Example] Although the illustrated example is as described above, the operation knob 40 is always engaged with or integrally connected to the egress/retraction operation member 30 when switching the switch knob 17 between the middle position and the upper position. 4. Brief description of the drawings The drawings show an embodiment of the electric shaver according to the present invention, and FIG. 1 is an overall perspective view, and FIG. 2 is an overall perspective view. 3 is a front view of the main parts seen from the back side, FIG. 4 is an exploded perspective view showing the mechanism for moving the razor blade in and out, which is one of the components of the present invention, and FIG. Figure 5 is a side view illustrating the protruding operating state of the razor blade. ■ Main body case. 2 Inner blade. 3 Inner blade drive mechanism. 4 Inner blade. Razor blade. 5... Outer blade. 17... Switch knob. 30... Exit/exit operation member. 40... Operation knob.

Claims (1)

[Claims] (1) Inner blade 2 that slides into contact with the inner surface of outer blade 5 on main body case 1
A sliding switch knob 17 that can be operated to switch between upper, middle, and lower positions is installed on the outer surface of the main body case 1. The case has a switch operation piece 20 that moves together with the switch knob 17, and when the switch operation piece 20 is in the lower position, the driving of the inner blade drive mechanism 3 is stopped, and the switch operation piece 20 is in the middle position and the upper position. The razor blade 4 is provided with an electric circuit that drives the inner blade drive mechanism 3 when it is in the position, and when the razor blade 4 is placed on the outer surface of the body case 1, it protrudes to the outside of the body case and retracts into the body case side. and a means for driving the edge razor blade 4 by transmission connecting the edge razor blade 4 to the inner blade drive mechanism 3 only when the edge razor blade 4 is in the protruding posture. An egress/egress operation member 30 for moving the edge razor blade 4 in and out is arranged in the main body case so as to be vertically movable, and the egress/egress operation member 30 and the edge razor blade 4 are the egress/egress operation member. 30 is moved upwardly, the edge razor blade 4 is placed in the retracted position, and when the egress/retraction operation member 30 is moved downward, the edge razor blade 4 is switched to the protruding position; A balance arm 34 is pivotably supported,
One end of the balance arm 34 is connected to the withdrawal/exit operation member 30 so that the withdrawal/exit operation member 30 moves up and down with the swinging of the balance arm 34; The contact arm 36 extends from the switch operation piece 20, and the contact arm 36 is connected to the other end of the balance arm 34 when the switch operation piece 20 is in the lower position. The abutting arm 36 is detached from the balance arm 34 and is in contact with the balance arm 34 when the switch operation piece 20 is in the middle position and the upper position, and the contact arm 36 is in contact with the balance arm 34 when the switch operation piece 20 is in the middle position and the upper position. By switching to the balance arm 3
4, the egress/egress operation member 30 in the upper position is pulled down, and when the switch operation piece 20 is switched from the upper position to the middle position, the egress/egress operation member 30 is pushed up via the balance arm 34. . The main body case 1 has the following features: a sliding operating knob 40 dedicated to operating the razor blade in and out is mounted on the outer surface of the main body case 1, and a means for connecting the operating knob 40 and the ingress/egress operation member 30 is provided. An electric razor.