JPH0451755Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] This invention relates to an electric shaver.

[Conventional technology]

Conventionally, in this type of electric shaver, for example, the main body case includes a grip portion and a razor unit on the upper front side connected to the grip portion, which includes an inner cutter driven by a motor and an outer cutter in sliding contact with the inner cutter. It has a roughly inverted L shape, and when in use, grip the handle to shave.

In many cases, such electric shavers have an operating knob for switching the inner blade drive motor on and off at the upper end of the front wall of the grip portion of the main body case, and the operating knob is operated with the thumb of the gripping hand.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional technology, the arrangement position of the operating knob is set with the focus on operability of the operating knob, and as a result, while turning on the switch and shaving, the thumb may touch the operating knob. A problem was found in which the drive of the inner cutter was erroneously stopped.

The purpose of this invention is to solve the above-mentioned problems while maintaining the operability of the operating knob by improving the position of the operating knob disposed on the outer surface of the main body case.

[Means for solving problems]

In order to achieve the above purpose, the present invention
As illustrated in the figure, the following configuration is adopted.

On the upper front side that connects to the grip of the main case,
A razor unit equipped with an inner cutter driven by a motor and an outer cutter in sliding contact with the inner cutter is arranged, and the razor unit is positioned below the front of the main body case from the lower side to the upper side with respect to the grip axis of the main case. An inclined wall surface that slopes rearward toward the side is provided continuously with the front wall surface of the grip part, and an operating knob of a switch that is pressed in a direction perpendicular to the inclined wall surface is mounted on the inclined wall surface. It was placed so that it was located inside the virtual extension of the wall.

[Effect]

Therefore, since the operating knob is formed on an inclined wall surface that slopes rearward with respect to the front wall surface of the grip section, and is pressed in a direction perpendicular to this inclined wall surface, the front wall surface of the grip section due to the inclined wall surface and When the grip part is gripped due to the change in the plane direction, the gripping direction of the fingers and the pressing direction of the operating knob are different, making it difficult for the gripping hand to press the operating knob carelessly. In addition, since the operating knob is located on the inclined wall surface that is recessed inward from the imaginary extension of the front wall surface of the handle, it is possible to prevent the handle from touching the operating knob when shaving.

〔Example〕

FIG. 5 shows a side view of the entire electric shaver according to the present invention, and FIG. 1 shows a cross section of the main parts thereof.

The main body case 1 of this electric shaver has a two-part structure consisting of a front case 1a and a rear case 1b. A motor support case 1c is welded and fixed to an opening formed in the upper front surface of the front case 1a, and an arm 2 protruding inward from the motor support case 1c has both front and rear output shafts 3a and 3b. A shaft type motor 4 is fitted and supported. The lower part of the main body case 1 is a vertically elongated grip part N, and a battery storage chamber is configured inside, in which a rechargeable main battery, a charging circuit board, a charging transformer, a spare battery, etc. are incorporated (not shown). , and main case 1
A charging plug 5 is attached to the lower end of the charging plug 5 so as to be able to slide sideways in and out.

A rotary razor unit 20 is mounted on the front surface of the motor support case 1c. This razor unit 20 has an inner cutter holder 23 with respect to a dome-shaped outer cutter 22 supported by an outer cutter holder 21.
The outer cutter holder 21 is screwed into the motor support case 1c, and the inner cutter holder 23 is attached to the front output shaft of the motor 4. 3a
is connected to.

At a lower position of the razor unit 20 on the front surface of the main body case 1, there is an inclined wall surface W that is inclined rearward from the lower side to the upper side with respect to the axis l of the grip part N.
is formed continuously with the front wall surface of the grip part N, and the operating knob 6, which has a triangular shape in front view, is pivoted on the inclined wall surface W so that it can be pushed inward and swing freely about the support shaft 7. An arm 8 protruding from the inner surface of the operating knob 6 is engaged and connected to an operating piece 10a of a push-on/push-off switch 10 fixed in the case, and each time the operating knob 6 is pushed in, The switch 10 is turned on and off to start and stop the motor 4. Further, a lock button 11 for the operation knob 6 is attached to the side surface of the rear case 1b so as to be able to slide up and down, and when the lock button 11 is slid downward as shown in the figure, the operation knob 6 is allowed to be pressed and the lock button 11 is pressed. When the button 11 is slid upward, the lock piece 12a of the lock plate 12 connected to the inside of the button 11 is inserted between the switch 10 and the arm 8 to prevent the operation knob 6 from being pushed in. Further, arms 12b, 12b connected from the lock plate 12
The sliding position of the lock button 11 is maintained by elastic engagement with a pin 13 protruding from the inner surface of the rear cover 1b. In addition, on the front of the front case 1a,
A standby switch 14 is provided for driving the motor 4 using a dry battery when the rechargeable battery is insufficiently charged.

On the upper rear surface of the main body case 1, an edge shaving case 31 containing a comb blade unit 30 is slidable up and down between a use position where it protrudes upward from the main case 1 and a non-use position where it retracts downward. installed.

The comb blade unit 30 is configured to reciprocate in the lateral direction the movable comb blades 34 that are in sliding contact with the fixed comb blades 33 fixed to the holder 32. The fulcrum pins 35, 35 are engaged in the pin receiving recesses 36, 36 formed on the upper inner surface of the edge shaving case 31, and the entire unit 30 swings around the fulcrum pin 35. It is attached to swing in and out from the opening 37.

The front side of the edge shaving case 31 is completely open, and a cover plate 38 that closes this is fitted and connected.
A pair of upper and lower engaging pieces 40, 40 with hooks are provided that protrude forward through the rear case 1b. The shaving case 31 is supported so as to be slidable up and down.

A plastic vibrator 42 for driving the movable comb blades 34 of the comb blade unit 30 is incorporated in the internal space of the edge shaving case 31. A pair of left and right support arms 43, 43 extend downward from both upper shoulders of the vibrator 42, and pins 44, 44 provided at the tips of each arm 43 connect to pivot bosses 45, 45 provided on the inner surface of the case. It is supported by inset.
A long hole 46 is formed in the center of the vibrator 42 in which an upper wide hole part 46a and a lower narrow hole part 46b are connected, and a long hole 46 is formed in the center of the upper end of the vibrator 42 and in the center of the movable comb blade. A bifurcated engaging portion 47 that engages the protruding piece 34a is provided in a protruding manner.

Also, the rear output shaft 3b of the motor 4 is connected to the rear case 1.
The eccentric cam 50 is inserted into the shaving case 31 through the hole 48 of b and the upper and lower elongated holes 49 of the cover plate 38, and the eccentric cam 50 attached to the protruding end thereof is inserted into the elongated hole 46 of the vibrator 42. When the edge shaving case 31 is in the lower non-use position, the eccentric cam 50 is rotated as shown in FIG. 7a.
is located in the wide hole 46a of the vibrator 42, contact between the vibrator 42 and the eccentric cam 50 is avoided, and the vibrator 42 is never driven. Further, when the edge shaving case 31 is pushed up to the upper use position, the eccentric cam 50 is engaged in the narrow hole 46b set to the same size as the outer diameter of the shaving case 31, as shown in FIG. 7b. As the eccentric cam 50 rotates, the vibrator 42
are the upper thin parts 43a, 4 of the support arms 43, 43.
Due to the elastic deformation of 3a, it is driven to reciprocate left and right approximately in parallel.

The inner surface of the cover plate 38 is provided with small hemispherical protrusions 51, 51 that face the tip of the support arm 43 of the vibrator 42 to prevent the pin 44 from lifting off from the pivot boss 45. There is. Also,
An edge shaving case 31 is provided on the upper rear surface of the vibrator 42.
Hemispherical small protrusions 53, 53 facing the inner surface of the vertical wall 52 provided in the opening are provided to reduce the sliding resistance when the vibrator 42 moves from side to side.

Next, a structure for operating the comb blade unit 30 to move in and out will be explained.

A pivot pin 35 and an eccentric pivot hole 54 are provided on one side of the holder 31 of the comb blade unit 30, and an operating arm 56 pivotally connected to the pivot hole 54 via a pin 55 is movable up and down. is incorporated into the case 31. An operating piece 56a facing forward is connected to the lower end of the operating arm 56.
This operating piece 56a passes through the upper and lower slits 57 provided on the cover plate 38 and is projected forward, and is engaged in the upper slit 58 provided on the rear surface of the rear case 1b.

When the edge shaving case 31 is in the lower non-use position, the operating piece 56a of the operating arm 56 comes into contact with the lower end of the slit 58 on the main body case side and is regulated in position, as shown in FIG. 8a. in,
When the comb blade unit 30 is stored inside the opening 37 and the edge shaving case 31 is slid upward to the use position, the operation piece 56a is inserted into the slit 58 on the main case side during the upward movement. By further moving the case 31 up and down, the operating arm 56 is pulled down relative to the case 31, and the comb blade unit 30 is thereby moved against the fulcrum pin 35. It is swung up and swung around , and is projected rearward from the opening 37. And the comb blade unit 3
0 swings into the protruding position, the movable comb blade 34
The protruding piece 34a is engaged with the engaging portion 47 of the vibrator 42.

When the edge shaving case 31 is moved downward, the operating arm 56a comes into contact with the lower end of the slit 58 during the downward movement, and the operating arm 56 is pushed upwards by the downward movement of the case 31. The comb blade unit 30 is swung and retracted downward.

In this case, the pivot hole 54 draws an arcuate locus in response to the linear vertical movement of the operating arm 56, but the operating arm 56
Differences in movement trajectories are absorbed by the elastic deformation of 6.

[Another example]

In the above embodiment, the operation mode of the switch 10 is described as a push-on/push-off type, but it is not limited to this, and of course a slide type switch may also be used. The knob is a sliding operation knob.

Further, although the razor unit 20 provided on the upper front surface of the main body case 1 is of a rotating type, a reciprocating type may also be provided.

[Effect of the invention] The electric shaver of the invention has an inclined wall surface W that is inclined backward from the lower side to the upper side with respect to the grip axis l of the main body case 1 at the lower position of the razor unit 20 on the front surface of the main body case 1. An operating knob 6 of the switch 10 is provided continuously with the wall surface of the switch 10 and is operated by pressing the switch 10 in a direction perpendicular to the inclined wall surface W.
Since this operation knob is arranged so as to be located inside the virtual extension of the front wall surface of the grip part, the operability of the operation knob 6 by the thumb of the hand holding the grip part N of the main body case remains the same as before. Can be secured well. On top of that, the operating knob 6 is placed on the inclined wall surface W that is inclined rearward with respect to the grip portion N.
Since it is formed in such a form that it is pressed in the vertical direction, when gripping the grip part N during shaving, the gripping direction of the fingers (direction toward the inner surface of the grip part N) and the pressing operation direction of the operating knob 6 are the same. However, due to the angle change between the inclined wall surface W and the front wall surface of the grip portion, the directions differ, making it difficult for the grip hand to press the operating knob 6 carelessly. Moreover, operation knob 6
As shown in FIG. 1, the operation knob 6 is located on an inclined wall surface W that is recessed inward from the virtual extension line K of the front wall surface of the grip N, and the operating knob 6 itself is located inside the virtual extension line K. Therefore, even if the thumb that grips the grip part N moves upward from the grip part N during shaving, the pad of the fingertip is caught by the ridge line between the front wall surface of the grip part and the inclined wall surface W. , it is difficult for the fingertips to bend to reach the operation knob 6, which is arranged so that it slopes inward as it goes upward from the ridgeline.
Coupled with the above-mentioned gripping direction being different from the pressing direction of the operating knob 6, it is possible to prevent erroneous operation of the operating knob 6 as much as possible.

In addition, the inclined wall surface W is formed continuously from the front wall surface of the grip part N, and the switch operation knob 6 arranged on the inclined wall surface W is located along the virtual extension line K of the front wall surface of the grip part N.
Since it is housed within the upper inner range, there is no protrusion on the exterior of the main body, and the aesthetics of the design are not compromised.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the main parts of the electric shaver according to the present invention, and FIG. 2 is an A--A in FIG. 1.
3 is a sectional view taken along line A, FIG. 3 is a sectional view taken along line B-B in FIG.
The figure is an overall side view, Figure 6 is an exploded perspective view of the main parts, and Figures 7a and b are front views showing the vibrator drive section.Figure a is the state when not in use, and figure b is the state when in use. are shown respectively. Figures 8a and 8b are side views showing the retractable structure of the comb blade unit, with Figure 8a showing the state when not in use, and Figure 8b showing the state when in use. 1...Body case, 4...Motor, 6...Operation knob, 10...Switch, 20...Razor unit, 22...Outer blade, 24...Inner blade, N...Grip portion, l...Grip Part axis line, W... Inclined wall surface.

Claims (1)

[Scope of utility model registration request] On the upper front side that connects to the grip of the main case,
A razor unit equipped with an inner cutter driven by a motor and an outer cutter in sliding contact with the inner cutter is arranged, and the razor unit is positioned below the front of the main body case from the lower side to the upper side with respect to the grip axis of the main case. An inclined wall surface that slopes rearward toward the side is provided continuously with the front wall surface of the grip part, and an operating knob of a switch that is pressed in a direction perpendicular to the inclined wall surface is mounted on the inclined wall surface. An electric shaver characterized in that it is located inside a virtual extension of a wall surface.