JPH07110307B2 - Electric razor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reciprocating electric shaver including a vertically long body case and a left and right vibrating razor unit.

[Conventional technology]

This kind of electric razor is disclosed in, for example, Japanese Patent Laid-Open No. 60-24884, in which the cross-sectional shape of the main body case is formed into a thin rectangular shape in the front and rear, and the razor provided in the main body case and the upper part thereof. The unit is generally configured to have substantially the same front and rear thickness over the entire length in the vertical direction. The front and rear thickness of the main body case is set so that the thumb can be hung on the front surface of the main body case and pinched by the fingers from the front and back.

[Problems to be solved by the invention]

In this way, if the body case is used by holding it from the front and back with fingers, the debris spilled from the razor unit will splash on the thumb hung on the front of the body case.

Moreover, an electric shaver whose cross-sectional shape is substantially the same over the entire length in the vertical direction is easily slipped off when the force of the fingers is weakened. In such an electric shaver, a slide type or push type switch knob for turning the motor on and off is provided on the upper half portion of the front surface of the main body case on which the thumb is generally placed. Therefore, when the power of the fingers weakens during use and the body case tends to slip off, and the fingers are hurriedly put on the fingers, if the thumb is on the off button, the motor is accidentally stopped and the razor unit is removed. There was a risk of stopping while biting the hair.

An object of the present invention is to improve the shape of the main body case from this point of view to improve the conventional problems and obtain a user-friendly electric shaver.

[Means for solving problems]

In the present invention, the above-mentioned problems are solved by providing the rising step portion 104 for finger contact at the upper and lower intermediate portions on the front surface of the main body case 1.

Specifically, as shown in FIG. 1, a rising step portion 104 that rises steeply is formed in the upper half of the front surface of the body case 1. Preferably, the rising step portion 104 is formed on the inclined plane 104a that is gentle from the lower end of the top surface toward the upper end side, and an on button for controlling the operation of the motor 7 is provided in the inclined plane 104a.
Switch operation members such as 77 and off button 88 are collectively arranged. The rising step portion 104 is formed in a convex curve shape that faces downward in a front view.

[Action]

According to the above configuration, when the razor is used, the thumb is hung on the front surface of the main body case 1 and is sandwiched by the fingers from the front and back as in the conventional case. In this case, the thumb is a rising step 104 located at the upper and lower middle of the front surface of the main body case 1. Will be attached below.

Therefore, during use of the razor, the dust scraps spilled from the upper razor unit 2 will fall along the upper half of the front surface of the case, and will not be touched by the thumb in the state below the rising step 104.

〔The invention's effect〕

Therefore, according to the present invention, it is possible to prevent the dust from splashing on the thumb during use of the razor, and even if the thumb is caught by the rising step 104 even if the finger is slightly relaxed and supported lightly. You can easily change the razor's posture during use with your fingers without sliding Case 1 off. Therefore, it becomes easy to move the razor unit along the skin well, and the handling performance can be improved as compared with the conventional one.

Even when the switch operating member is provided on the upper front surface of the main body case 1, the thumb does not move onto the switch operating member unless the user intentionally operates it, and there is no risk of accidentally stopping the motor during use of the razor, for example. .

According to a preferred embodiment of the present invention in which the rising step portion 104 is bent downward when viewed from the front, the body case 1 is swung left and right or forward and backward so that the thumb extends along the tangential direction. When shaving a complicated shape such as the chin, the posture of the main body case 1 can be delicately changed by the return of the wrist and the use of fingers, and the handleability can be improved.

[First Embodiment] A first embodiment of the electric shaver according to the present invention will be described below with reference to FIGS. 1 to 17.

1 and 2, the electric razor is provided with a left-right vibrating razor unit 2 on the upper portion of a vertically elongated main body case 1 having a substantially rectangular cross-section in the front-rear direction. A shaving case 4 in which a comb blade unit 3 is freely retractable is provided on the upper rear surface.

The main body case 1 has a front and rear case 1a and a rear case 1b, and has a front and rear split structure, and has a motor mounting substrate 5 and a switch base 6 inside thereof.

5 to 7, a motor 7,
Rechargeable main battery 8 and auxiliary battery 9, motor 7 and main battery 8
The main switch 10 for connecting and disconnecting the battery, the auxiliary switch 11 for connecting and disconnecting the motor 7 and the auxiliary battery 9, the transformer 12 for the charging circuit, and the like are assembled, and the substrate 5 is screwed to the rear case 1b. The charging of both batteries 8 and 9 is performed by connecting a charging plug 14 mounted on the lower end one side of the main body case 1 via a plug case 13 to an AC power source.

In FIGS. 6 and 7, a razor unit mount 15 is fixed to the upper end of the main body case 1 with the output part of the motor 7 exposed, and the upper case covers the mount 15 from above and from the left and right sides. 16 are fitted via protrusions 15a, 15a provided on the left and right outer surfaces of the mounting base 15. This protrusion 15a
Has a circular shape in side view as shown in FIG.
The upper case 16 can be tilted back and forth with the projections 15a and 15a as fulcrums.

Between the lower end of the upper case 16 and the upper end of the main body case 1,
A gap that allows the upper case 16 to tilt forward and backward is formed over the front surface and the left and right side surfaces, and a U-shaped planar rubber bellows 17 that closes the gap is attached to the gap. The upper end periphery of the bellows 17 is sandwiched by the lower end surface of the upper case 16 and the periphery of the rubber retainer 18 arranged inside the upper case 16, as shown in FIG. Flange 15b extending outward from the main body case 1
It is clamped by the upper end of. The bellows 17 is assembled in a state of being slightly compressed by the free state. This can reduce the amount of expansion of the folds when the razor unit 2 tilts.

In FIG. 6 and FIG. 7, the reciprocating vibration type razor unit 2 provided in the upper part of the main body case 1 has an inner blade holder 22 which is attached to the inner surface of the mesh-shaped outer blade 21 supported by the outer blade holder 20. Is a publicly known one in which a large number of groups of inner blades 23 arranged in parallel with each other are slidably moved left and right.

The inner blade holder (22) is fitted and supported by a bracket (26) which is fitted on the upper support shaft (25) of the vibrator (24). The bracket 26 is externally fitted to the support shaft 25 so as to be rotatable and vertically movable, and is supported by a sleeve 28 urged by a spring 27 so as to be capable of swinging the balance through a fulcrum 29. As a result, the group of inner blades 23 adheres to the inner surface of the outer blade 21 as a whole.

The outer blade holder 20 is detachably fitted to the upper case 16,
As shown in FIG. 6, the upper case 16 is locked and fixed by the lock claws 30 provided on the left and right side surfaces of the upper case 16 so as to be retractable. The left and right lock claws 30 are urged outwardly at the free ends of the leaf springs 31, 31 extending upward from the mount 15. The outer blade holder 20 can be attached to and detached from the upper case 16 by pushing and pulling the outer blade holder 20 up and down strongly and retracting the lock claw 30 against the leaf spring 31.

A ball 32 is embedded in the inner end of the lock claw 30, and
A pair of front and rear holes 33 that allow the balls 32 to be engaged with the free ends of the balls 33.
(Only one is shown in the figure) is formed, and the engagement between the ball 32 and the hole 33 on one of the front and rear sides constitutes a positioning detent structure when the upper case 16 is tilted forward and backward. .

That is, the razor unit 2 mounted on the upper case 16
Can be switched between an upright posture with respect to the body case 1 as shown by the solid line in FIG. 7 and a projecting posture that is tilted slightly forward with respect to the body case 1 as shown with the phantom line in FIG. Yes, both postures can be selected and used arbitrarily.

In FIG. 6, thin-walled legs 24 are provided on the left and right ends of the vibrator 24.
It is equipped with a and 24a, and each upper end of this leg 24a is the upper case 1
The vibrator 24 is fixed to 6 and the left and right legs 24a are deformed so that the whole of the vibrator 24 can move left and right substantially in parallel. A slider 34 is fitted on the vibrator 24, and the slider 34 is engaged with an upper eccentric pin 37 of a balancer 36 attached to a motor output shaft 35. With the rotation of the motor output shaft 35, the slider 34 and the vibrator 24 are integrally reciprocated left and right with a constant stroke. Slider 34
Can be rotated back and forth with respect to the vibrator 24 about the tilting center of the upper case 16, that is, the axis of the circular protrusion 15a.
As a result, even when the razor unit 2 is tilted forward, the slider 34 maintains the engagement posture with the vibrator 24.

The shaving case 4 provided on the outer surface of the upper part of the rear case 1b is slidably mounted vertically between a use position which is lifted upward (Fig. 17) and a non-use position which is pulled downward (Fig. 16). The comb blade unit 3 swings up and projects, and the comb blade unit 3 is folded and stored in the unused position. This is explained in FIGS. 13 to 17.

In FIG. 13, the comb blade unit 3 includes a fixed comb blade 41 fixed to a holder 40, and a movable comb blade 42 slidingly contacting the fixed comb blade 41 and reciprocating laterally. Holder 40
The fulcrum pins 43, 43 projecting on both the left and right outer sides of the shaving are engaged and supported by the pin receiving recesses 44, 44 formed on the left and right of the inner surface of the upper part of the shaving case 4, and the comb blade unit 3 as a whole is around the fulcrum pin 43. It oscillates and can be withdrawn and withdrawn from the opening 45 formed in the upper rear surface of the shaving case 4 as shown in FIG.

A pair of left and right engaging claws 46, 46, 47, and 47 with hooks project from the upper and lower back surfaces of the shaving case 4 toward the front (inward). The upper engagement claws 46, 46 are inserted into and engaged with vertical slits 48, 48 formed on the left and right rear surfaces of the rear case 1b,
The lower engaging claws 47, 47 are inserted into vertical slits 49, 49 formed on the left and right of the rear surface of the rear case 1b. The rear case 1b has a horizontally long contact plate piece 50 on the inner surface side, and the lower engagement claws 47, 47 penetrating the slits 49, 49 of the rear case 1b correspond to the plate piece 50.
Engage with the engaging holes 51, 51 provided on the left and right sides of the. As described above, the shaving case 4 is supported by the rear case 1b so as to be slidable up and down by the guides at the upper and lower positions.

Both ends 54a and 54b of the spiral spring 54, which is wound in the small holes 52 and 53 formed in the rear case 1b and the backing plate piece 50, are attached in a deformed state of initial winding. At that time, as shown in FIG. 14, when the shaving case 4 is in the downward slide position, the spiral spring 54
When the shaving case 4 is in the upper slide position, the free end 54a of the free end 54a can spread downward and force the downward restoring force of the shaving case 4, and when the shaving case 4 is in the upward slide position, the free restoring force of the free end 54b can be upwardly divided. The shaving case 4 is pushed up and urged, and the shaving case 4 is held in the used position and the unused position.

In FIGS. 13 and 15, a cover plate 55 made of a sheet metal press is fitted and connected to the inner surface of the upper portion of the shaving case 4, and the comb blade unit 3 is provided between the cover plate 55 and the standing wall 56 in the opening 45. A vibrator 57 for driving the movable comb blade 42 is incorporated so as to be movable left and right. This oscillator 57
A bifurcated engagement protrusion 58 into which an engagement piece 42a provided at the center upper portion of the movable comb blade 42 is provided is provided at the upper left and right center of the vibrator, and a cover plate is provided at a lower portion near one end of the vibrator 57. Engaging claws 60 that project inwardly from notches 59 formed in the lower side of 55
Have. This engaging claw 60 is projected into the main body case 1 through a through hole 61 formed in the rear surface of the rear case 1b, and only when the shaving case 4 is in the upper slide position, the engaging claw 60 of the slider 34 of the razor unit 2 is moved. The vibration driving force is transmitted to the vibrator 57 by being engaged with the rear driving piece.

Next, the retracting operation system of the comb blade unit 3 will be described. On one side of the holder 40 in the comb blade unit 3, a fulcrum pin 43 and an eccentric pivot hole 62 are provided. An operating arm 64 is pivotally connected to the pin via a pin 63. The operation arm 64 is vertically movably incorporated between the standing wall 56 and the cover plate 55 in the shaving case 4,
An operation piece 65 provided at the lower end of 64 passes through the lower end of the cover plate 55 and projects forward. Then, the operation piece 65 is engaged with the opening 66 that is continuous with one upper slit 48 provided in the rear case 1b.

Now, when the shaving case 4 is in the lower unused position, the operation piece 65 of the operation arm 64 is brought into contact with the lower end of the opening 66 and the position thereof is regulated as shown in FIG. The unit 3 is in the posture of being stored inside the opening 45.
On the other hand, when the shaving case 4 is slid upward and moved to the use position, the operation piece 65 is abutted against the upper end of the opening 66 during the upward movement, and the case 4 is further moved upward. As shown in FIG. 17, the operation arm 64 is relatively pulled down with respect to the case 4, whereby the comb blade unit 3 is swung up around the fulcrum pin 43, and is swung from the opening 45 to the outside of the rear side. Project in one direction.

When the shaving case 4 is operated downward, the operation piece 65 first comes into contact with the lower end of the opening 66 in the middle of the operation, and the arm 64 is relatively pushed up by the downward movement of the case 4,
The comb blade unit 3 is swingably stored downward.

In FIG. 13, a small protrusion 67 is formed on the inner surface of the cover plate 55 for guiding the operation arm 64 in sliding contact, and burrs generated at the edge of the plate when the cover plate 55 is punched and pressed. Does not touch the operation arm 64. The small protrusions 67 also work effectively against burrs produced when the cover plate 55 is plastic-molded.

Next, the surroundings of the switch 10 and the auxiliary switch 11 will be described with reference to FIGS.

In FIG. 5, a seesaw member 72 having a substantially T-shaped side view with a lateral support shaft 71 is dropped into and inserted into a vertically elongated opening 70 formed in the front surface of the switch base 6, as shown in FIGS. As shown in FIG. 10, the support shaft 71 is supported in a two-sided manner by bearings 73, 73 which are formed on the inner left and right sides of the center of the opening 70, and the seesaw member 72 allows the seesaw to swing about the support shaft 71. To support.

At the center of the seesaw member 72, there is an operation arm 74 that engages with the operation piece 10a of the main switch 10 mounted on the substrate 5,
Switch operation piece with the seesaw swing of the seesaw member 72
10a is operated over the lower on position (FIG. 8) and the upper off position (FIG. 7). Further, a U-shaped elastic arm 75 is connected to the lower end of the seesaw member 72, and this arm 75 is an engaging arm 76 protruding from the rear surface of the switch base 6.
The seesaw member 72 is held in the switch-on posture and the switch-off posture by being elastically engaged with the convex portion of the tip of the switch, and serves as a moderation when the switch is operated.

A fan-shaped on-button 77 and an off-slider 78 are arranged above and below the front surface of the switch base 6, and a pair of left and right legs 79, 79, 80, which project from the rear surfaces of the on-button 77 and the off-slider 78.
80 are inserted in the upper and lower parts of the opening 70. On the back surface of the switch base 6, there are provided guides 81 and 82 into which the inserted legs 79 and 80 are linearly slidable forward and backward, and an on-button 77 and an off-slider 78 can be retracted in the longitudinal direction. Supported.

As shown in FIGS. 5 and 7, pins 85 and 86 that engage with recesses 83 and 84 formed at the upper and lower ends of the seesaw member 72 are provided at the front and rear of the legs 79 and 80, respectively. The seesaw member 72 is switched between the switch-on posture and the switch-off posture by alternately pressing the button 77 and the off slider 78.

On the front surface of the off-slider 78, a downward fan-shaped off button
88 are arranged with an appropriate insertion interval, and both
A coil spring 89 is interposed between 78 and 88, and the OFF button 89 is always restored to the non-pushed-in position in both the switch-off state shown in FIG. 7 and the switch-on state shown in FIG. It

A lock knob 90 for restraining the ON operation of the ON button 77 is provided on the left side of the front surface of the switch base 6, and an auxiliary switch knob 91 for operating the auxiliary switch 11 is provided on the right side of the front surface of the switch base 6, respectively. It is rotatably arranged along 101.

In FIGS. 5, 9, and 11, the lock knob 90
A bifurcated check arm 92 is provided on the shaft, and when the lock knob 90 is operated to rotate clockwise,
The tip of 92 enters below the protrusions 93, 93 provided on the back surface 0 of the ON button 77, and the pushing of the ON button 77 is restrained. The lock knob 90 is held in the unlocked position and the locked position by the engagement of an arcuate elastic arm 94 connected to the outer side of the lock knob 90 and a pin 95 provided on the switch base 6.

In FIGS. 5, 6, and 12, an operation arm 96 which is externally engaged with the operation piece 11a of the auxiliary switch 11 is provided on the back surface of the auxiliary switch knob 91, and the knob 91 is rotated counterclockwise. When it is turned upward, the auxiliary switch 11 is turned on. An engaging hole 98 that engages with a check pin 97 connected to the off-slider 78 is provided below the auxiliary switch knob 91, and the off-slider 78 is pushed in to engage the main switch 10.
When the switch is in the off state, the check pin 97 is engaged with the engagement hole 98, and the check operation of the auxiliary switch 11 is blocked. When the main switch is turned on by pushing the on-button 77 and the off-slider 78 is returned to the front standby position, the check pin 97 disengages from the engagement hole 98 as shown in FIG. The switch knob 91 can be moved on.

In this way, by restraining the auxiliary switch 11 so that it can be turned on only when the main switch 10 is in the on state, the auxiliary battery 9 can be used only when the main battery 8 is completely discharged. . The auxiliary switch knob 91 is the 9th
As shown in the figure, an arcuate elastic arm 99 connected to the outer side of the arm is engaged with a pin 100 provided on the switch base 6 to hold the switch in both the on and off positions, and to provide moderation during operation.

A ring-shaped switch frame 101 is attached to the front surface of the switch base 6, and the button 77 is attached by the switch frame 101.
-Prevents the 88 and knobs 90 and 91 from coming off from the front. A pair of left and right protrusions 102, 102 protruding from the back surface of the central portion of the switch frame 101 are engaged with the central portion of the opening 70 of the switch base 6 as shown in FIG. Prevent the rising up to.

The switch frame 101 is attached to the front part of the switch base 6 in an inclined posture such that the lower side of the frame projects forward from the upper side.
Is covered from the front. As a result, as shown in FIG. 1, the buttons 77 and 88 and the knobs 90 and 91 are exposed from the circular opening 103 formed in the upper front surface of the front case 1a.

It should be noted here that, as shown in FIGS. 1 and 5, the front upper half portion of the front case 1a is formed on the inclined flat surface 104a projecting forward as it goes downward depending on the projecting shape of the switch base 6. The point is that the rising step 104 is formed from the main surface of the front case 1a so that the lower end of the upper half of the front surface is the top.

That is, the rising step portion 104 is formed in a semicircular shape that is convex downward when viewed from the front, and a single inclined plane 104a is formed between the top and bottom ends of the rising step portion 104 and the upper end of the main body case 1. There is. Switch operating members such as the buttons 77 and 88 and the knobs 90 and 91 are collectively arranged in the inclined plane 104a.

Thus, when the razor unit 2 is used, as shown in FIG. 4, the thumb is attached to the lower side of the rising step 104 and the main body case 1 is sandwiched by fingers between the front and back. At this time, the thumb can be tangentially attached to the rising step 104 by using the fingers to tilt the razor left and right or front and back. At this time, switch operating members (77, 88, 90, 9
Since 1) is in the inclined plane 104a of the rising step 104 and is away from the main surface of the front case 1a where the finger is placed, the OFF button 88 is not erroneously operated during use.

In the specification without the auxiliary battery 9, the auxiliary switch 11 and the auxiliary switch, that is, 91 is omitted, and the switch frame 101 is replaced with an auxiliary switch knob 91 without an opening for exposure.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 17 show a first electric shaver according to the present invention.
Fig. 1 shows an embodiment, Fig. 1 is a front perspective view, Fig. 2 is a rear perspective view, Fig. 3 is a front view, Fig. 4 is a front view in use, and Fig. 5 is a main body. Fig. 6 is an exploded perspective view of the case and the interior member. Fig. 6 is a vertical sectional front view in which a main part is broken. Fig. 7 is a vertical sectional side view of the main part in a switch off state. Fig. 8 is a main part in a switch on state. FIG. 9 is a vertical side view, FIG. 9 is a front view around the switch base, FIG. 10 is a cross-sectional plan view around the switch base, and FIG. 11 is a perspective view seen from the back side for explaining the movement of the lock knob acting on the on-button. FIG. 12 is a developed side view showing a means for restraining the operation of the auxiliary switch, FIG. 13 is an exploded perspective view showing a member for shaving, and FIG. 14 is a means for holding the shaving case in a vertical sliding position. Fig. 15 is a cutaway rear view of the main part shown in Fig. 15. Fig. 15 shows the main part when the shaving case moves upward. Cross-sectional side view, Figures 16 and 17 Figure is a vertical sectional side view of an essential part showing a projecting and retracting structure of each comb blade unit, FIG. 16 unused state, Figure 17 shows the use state. 1 …… Main body case, 2 …… Razor unit, 77 …… On button, 88 …… Off button, 104 …… Standing step, 104a …… Sloping plane of rising step.

Claims (1)

[Claims] 1. A reciprocating electric shaver in which a cross-sectional shape of a main body case 1 is formed in a substantially rectangular shape that is thin in the front-rear direction. In a reciprocating electric shaver, a rising step portion 104 for finger contact is provided at an upper and lower intermediate portion on the front surface of the main body case 1. The inclined operating surface 104a is formed between the lower end of the rising step portion 104 and the upper end of the main body case 1, and the switch operating member for controlling the operation of the motor 7 is disposed in the inclined operating surface 104a. An electric razor, wherein the rising step portion 104 has a shape in a front view that is formed in a downward convex curve.