JPH0316603Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an electric shaver equipped with a comb blade unit for shaving edges.

[Conventional technology]

In electric shavers, the frequently used mesh outer blades and the inner blades that slide into contact with these are placed on the top or front side of the main body case for ease of use, and the comb blade unit, which is used less frequently, is placed in the main body. It is attached so that it can be moved in and out from the front or rear of the upper part of the case. In this case, because the mesh-like outer blades are provided at the upper end of the main body case, the comb blade unit has to be installed below the mesh-like outer blades.
The tip of the comb blade will be located far below the top of the main case. However, if the upper part of the body case protrudes above the tip of the comb blade, or if you want to change the angle or direction of the comb blade relative to your body, the upper part of the body case may get in the way of seeing through the tip of the comb blade. There were times when the top of the case touched my body and I was unable to change my posture as desired.

Therefore, the entire comb blade unit can be moved up and down relative to the main body case, and when the plow blade unit is in use, the unit is raised to the top of the main body case, that is, at a level higher than the razor unit, and when the plow blade unit is not in use, It has been proposed that the unit is lowered and stored below the side of the razor unit (for example, Japanese Patent Application Laid-Open No. 56-57477).

[Problem that the invention attempts to solve]

However, in the above proposed technology, a structure is adopted in which the comb blade unit is swingably supported at the upper end of a frame (referred to as a handle in the publication) that can move up and down with respect to the main body case.
When the comb unit is in use, the above frame and the swinging pivot of the comb unit are all exposed to the outside, and hair particles can fall on the vertical sliding parts of the frame and the swinging pivot of the comb. There is a high risk of being bitten by someone else. The comb blade unit in the exposed state could be damaged by external force, such as when a razor is dropped.

In addition, in the above proposed technology, a structure is adopted in which the vibrator for driving the movable comb blades of the comb blade unit and the vibrator for driving the inner blades of the razor unit are used. It is necessary to interpose a separate transmission member between the blade and the blade, which increases the number of sliding parts and causes an increase in noise.
Furthermore, due to the necessity of intervening a separate transmission member, it is desirable to provide the razor unit and the comb blade unit as close as possible, and as a result, they impose dimensional constraints on each other, giving freedom in design. The intensity tended to be low.

The purpose of this invention is to solve the problems expected with the above-mentioned proposed technology by improving the support means, vertical movement means, and drive means of the comb blade unit.

[Means to solve the problem]

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

An inner cutter 24 driven by the motor 4 is provided on the upper front side of the main body case 1, and an edge shaving case 31 is provided at the upper rear surface of the main body case in a use position in which it protrudes upward from the main body case and in a downward position. A comb blade unit 30 consisting of a fixed comb blade 33 and a movable comb blade 34 is attached to the upper part of the edge shaving case 31 so that it can be slid up and down between the retracted and unused position. It is attached so as to be rotatable in and out of an opening 37 formed on the rear surface, and inside the edge shaving case 31, it engages with an eccentric cam 50 on the output shaft of the motor 4 to convert the rotation of the motor into reciprocating motion. It is equipped with a vibrator 42 for driving the movable comb blade 34, and the edge shaving case 31
When moving the comb blade unit 30 to the above-mentioned use position,
protrudes from the opening 37 and the comb blade unit 30
The movable comb blade 34 and the vibrator 42 are connected, and when the edge shaving case 31 is moved to the non-use position, the comb blade unit 30 is stored in the opening 37 and the movable comb blade 34 and the vibrator are connected. The comb blade unit 30 is provided with a mechanism for moving the comb blade unit 30 forward and backward using the relative vertical displacement between the main body case 1 and the edge shaving case 31 so that the connection with the edge shaving case 31 is released from the above-mentioned use position. The vibrator 42 is configured to engage the eccentric cam 50 on the output shaft of the motor 4 only in this case.

[Effect]

According to the above configuration, even when the edge shaving case 31 is slid to the upper use position in order to use the comb blade unit 30, the sliding portion between the edge shaving case 31 and the main body case 1 is directly exposed to the outside near the comb blades. The comb blade unit 30
The attachment site is also inside the opening 37 of the edge shaving case 31. Therefore, hair is less likely to be sprinkled onto each sliding portion, and the comb blade unit 30 is prevented from coming into direct contact with the outer material as much as possible.

[Effect of idea]

According to the present invention as described above, the comb blade unit 30 is made to protrude greatly above the main body case 1 when in use, and can be moved up and down greatly so that it can be retracted and stored on the rear side of the main body case 1 when not in use. However, the sliding parts do not get caught in hair, allowing smooth operation over a long period of time.

Since the comb unit 30 is housed inside the edge shaving case 31 when not in use, it can be sufficiently protected from external objects.

Comb blade unit 30 and eccentric cam 5 of motor 4
0 and a vibrator 42 for converting the rotation of the motor into reciprocating motion by directly engaging with the shaving case 3.
1, and the movable comb blades 34 are driven by the vibrator 42 and the movable comb blades 34. The number of sliding parts for power transmission is reduced, reducing noise, and by changing the shape and dimensions of the vibrator, it is possible to have more flexibility in the design of the dimensions between the motor and the comb blade unit. can.

If the inner cutter 24 and the comb blade unit 30 are distributed and arranged at the front and rear of the main body case 1, and the inner cutter 24 and the comb blade unit 30 are driven by the front and rear output shafts of the double-shaft type motor 4, the inner cutter 24 and the comb blade unit 30 It is easy to freely set the dimensions, shapes, and driving forms of each unit 30 without affecting each other, which is a great advantage in manufacturing.

〔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-piece structure consisting of a front case 1a and a rear case 1b, and has an upper part bent slightly backward. 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 is provided with output shafts 3a and 3b at the front and rear. A double shaft type motor 4 is fitted and supported. The lower part of the main body case 1 is configured as a battery storage chamber, in which a rechargeable main battery, a charging circuit board, a charging transformer, a spare battery, etc. are incorporated (not shown), and the lower end of the main body case 1 is configured with a battery storage chamber. A plug 5 is attached so that it can slide laterally.

A switch knob 6, which has a triangular shape when viewed from the front, is pivoted inwardly around a support shaft 7 so as to be able to swing freely between the top and bottom of the front case 1a, and an arm 8 protruding from the inner surface of the knob 6 is inserted into the case. Operating piece 10a of the permanently installed push-on/push-off switch 10
The switch 10 is turned on and off each time the knob 6 is pushed in and the motor 4 is engaged with the motor 4.
starts and stops. Further, a lock button 11 for the switch knob 6 is provided on the side of the rear case 1b.
is attached to be slidable up and down, and when the lock button 11 is slid downward as shown in the figure, the switch knob 6 is allowed to be pushed in, and when the lock button 11 is slid upward, the lock plate connected to the inside of the button 11 opens. Twelve lock pieces 12a are inserted between the switch 10 and the arm 8 to prevent the switch knob 6 from being pushed in. Also, lock plate 1
The sliding position of the lock button 11 is maintained by the elastic engagement between the arms 12b, 12b connected from the rear cover 1b and the pin 13 protruding from the inner surface of the rear cover 1b. A standby switch 14 is provided for driving the motor 4 using a dry battery when the battery is insufficiently charged.

Next, the structure of the razor action site will be explained.

A rotary razor unit 20 is attached to 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.

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 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 portion 46a of the vibrator 42, contact between the vibrator 42 and the eccentric cam 50 is avoided, and the vibrator 42 is not 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 this operating arm 56,
This operating piece 56a passes through an upper and lower slit 57 provided on the cover plate 38 and projects forward, and is engaged in an 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 to restrict its position, as shown in FIG. 8a. Then, 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 moved to the main body case side during the upward movement. The upper end of the slit 58 is regulated, and the case 3
By moving 1 upward, the operating arm 5
6 is pulled down relative to the case 31, and as a result, the comb unit 30 is swung up and swung around the fulcrum pin 35, and is projected rearward from the opening 37. And the comb blade unit 30
When the movable comb blade 34 swings into the protruding position, the protruding piece 34a of the movable comb blade 34 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 traces an arcuate trajectory with respect to the linear vertical movement of the operating arm 56, but the difference in the movement trajectory is absorbed by the elastic deformation of the operating arm 56.

In the above embodiment, the movable comb blade 34 is driven by the rear output shaft 3b of the motor 4, but
Instead, the movable comb blade 34 may be driven from the front output shaft 3a of the motor 4 via an appropriate power transmission mechanism. Furthermore, 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.

[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...Main body case, 3a, 3b...Output shaft, 4
... Motor, 22 ... Outer blade, 24 ... Inner blade, 30
... Comb blade unit, 31 ... Edge shaving case,
33...Fixed comb blade, 34...Movable comb blade, 37
...Aperture, 42...Vibrator, 50...Cam.

Claims (1)

[Scope of utility model registration request] An inner cutter 24 driven by the motor 4 is provided on the upper front side of the main body case 1, and an edge shaving case 31 is provided at the upper rear surface of the main body case in a use position in which it protrudes upward from the main body case and in a downward position. A comb blade unit 30 consisting of a fixed comb blade 33 and a movable comb blade 34 is attached to the upper part of the edge shaving case 31 so that it can be slid up and down between the retracted and unused position. It is attached so as to be rotatable in and out of an opening 37 formed on the rear surface, and inside the edge shaving case 31, it engages with an eccentric cam 50 on the output shaft of the motor 4 to convert the rotation of the motor into reciprocating motion. It is equipped with a vibrator 42 for driving the movable comb blade 34, and the edge shaving case 31
When moving the comb blade unit 30 to the above-mentioned use position,
protrudes from the opening 37 and the comb blade unit 30
The movable comb blade 34 and the vibrator 42 are connected, and when the edge shaving case 31 is moved to the non-use position, the comb blade unit 30 is stored in the opening 37 and the movable comb blade 34 and the vibrator are connected. The comb blade unit 30 is provided with a mechanism for moving the comb blade unit 30 forward and backward using the relative vertical displacement between the main body case 1 and the edge shaving case 31 so that the connection with the edge shaving case 31 is released from the above-mentioned use position. An electric shaver characterized in that the vibrator 42 is configured to engage with an eccentric cam 50 on the output shaft of the motor 4.