JPH0731753A - Electric razor - Google Patents

Abstract

PURPOSE:To provide the electric razor which reduces generation of vibration and a noise at the time of operation, makes an overhang from both ends small in the main body thickness direction at the time of turning of a cutter part, and can eliminate it as the case may be. CONSTITUTION:This electric razor is provided with a main body 21 on which a motor is mounted, a driving body 31 which is fixed to this main body and subjected to reciprocating motion by receiving a rotation of the motor, an inner blade rotary base 38 which is supported by this driving body 31 and subjected to reciprocating motion together with the driving body 31, and an inner blade base 41 supported so as to be turnable by the inner blade rotary base by setting the longitudinal direction as the turning shaft direction. This inner blade base 41 is provided with plural pieces of inner blades 43 arranged and attached in the direction being orthogonal to its longitudinal direction, an outer blade rotary base 46 attached to the main body so as to be attachable and detachable, an outer blade holder 56 supported so as to be turnable by the outer blade rotary base 46 by setting the longitudinal direction as the turning shaft direction, and an outer blade 57 attached to this outer blade holder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver in which a plurality of reciprocating inner and outer blades are rotatably supported by a main body.

[0002]

2. Description of the Related Art As an electric shaver of the above type, FIG.
7 to 7 are known.

In the figure, reference numeral 1 denotes a main body case, in which a motor (not shown) is mounted, and an eccentric rotating body 2 rotated by this motor is projected above the main body case 1. A pair of protrusions 3 are formed in the upper part with the eccentric rotating body 2 interposed therebetween.

A cutter block 4 is rotatably provided between the pair of protrusions 3. This cutter block 4
Has the following configuration. In the figure, reference numeral 5 denotes a block frame, which has a structure in which end walls are formed upright at both ends of the main body in the longitudinal direction. The block frame 5 is covered with an outer blade holder 7 to which an outer blade 6 is attached, and the outer blade holder 7 is attached to the block frame 5 by a locking claw 8.

A plurality of, for example, two inner blades 9 are arranged in parallel in a portion surrounded by the block frame 5 and the outer blade holder 7, and these inner blades 9 are attached to an inner blade base 10. A driver 11 is arranged below the block frame 5. The driving body 11 is a rigid main body portion 11a.
The thin elastic portions 11c are continuously formed at both ends of the thin elastic portions 11c, and the rigid end portions 11b are formed at the end portions of the thin elastic portions 11c. On the outer surface of the bottom of the main body 11a of the drive body 11, a groove (not shown) is formed along a direction perpendicular to the longitudinal direction. Then, the driver 11 has both ends 11
b is fixed, and the main body portion 11a is formed by each thin elastic portion 11c.
Are supported so that they can reciprocate.

The inner blade base 10 is connected to the main body portion 11a of the driving body 11 through an opening formed in the central portion of the block frame 5.

A bottom lid 12 is arranged below the drive body 11, and both ends of the bottom lid 12 in the longitudinal direction are attached to both ends of the block frame 5 together with both ends of the drive body 11.

The cutter block 4 thus constructed is arranged between the pair of protrusions 3 of the main body case 1, and both ends of the block frame 5 are rotatably supported by the rotary shaft 13. Further, the eccentric rotating body 2 provided in the main body case 1 is connected to the groove on the outer surface of the bottom portion of the driving body 11 through the opening formed in the bottom lid 12.

The eccentric rotating body 2 is rotated by the rotation of the motor provided in the main body case 1, and the driving body 11 that receives the rotation is reciprocated by utilizing the elasticity of the thin elastic portion 11c. The inner blade 9 is reciprocated via the inner blade base 10.

When shaving, the outer blade 6 of the cutter block 4 is applied to the skin of the user's face, and the beard growing on the skin is cut between the outer blade 6 and the inner blade 5. According to the inclination of the main body case 1, the block frame 5 rotates about the pin 13 so that the outer blade 5 can be applied to the skin in a constant state.

[0011]

The conventional electric shaver has the following problems.

First, in the conventional electric shaver, in addition to the inner blade 9 and the inner blade base 10, the outer blade 6 and the outer blade holder 7, the drive body 11 for driving the inner blade base 10, the bottom cover 12 and the block frame 5 are used. Incorporated into the main body case 1 to form a cutter block 4, and the cutter block 4 is rotatably supported between a pair of protrusions 3 of the main body case 1. A gap is provided between the end wall of the block frame 5 of the cutter block 4 and the pair of protrusions 3 so that the cutter block 4 can be smoothly rotated.

Therefore, when the driving body 11 of the cutter block 4 is driven to reciprocate the inner blade 9 in order to drive the electric razor, the block frame 5 vibrates in the longitudinal direction accordingly, and the cutter block 4 is further vibrated. All the components of 4 vibrate, and the vibration energy generated by the reciprocating motion of the inner blade 9 has energy equivalent to the mass of the entire cutter block 4. Therefore, there is a problem that vibration and noise generated by reciprocating movement of the inner blade 9 during operation of the electric razor are very large.

Further, the driving body 11 has a pair of thin elastic portions 11c positioned at both ends in the longitudinal direction so as to reciprocate in response to the rotation of the eccentric rotating body 2. The thin elastic portion 11c requires a width dimension of a certain size or more in order to have a strength to withstand a severe reciprocating motion while maintaining a thin thickness. On the other hand, the block frame 5 supports the drive body 11, and the drive body 11 rotates integrally with the rotation of the block frame 5. Therefore, the width of the end wall of the block frame 5 needs to be increased according to the width of the pair of thin elastic portions 11c of the driving body 11.

Then, the block frame 5 is connected to the driver 11
Since it is rotatably supported by the pair of protrusions 3 above the shaft by the rotating shaft 13, when the width dimension of the end wall of the block frame 5 becomes large as described above, the width direction of the bottom portion when the cutter block 4 rotates Both ends of sigma protrude beyond the both ends of the body case 1 in the thickness direction, which is not preferable in terms of appearance and handling.

The present invention has been made in view of the above circumstances, and reduces the generation of vibration and noise during operation, reduces the protrusion from both ends in the thickness direction of the main body during rotation of the cutter portion, and in some cases, The purpose is to provide an electric razor that can be eliminated.

[0017]

In order to achieve the above object, an electric shaver according to the present invention comprises a main body having a motor mounted thereon and a drive which is fixed to the main body and is reciprocated by the rotation of the motor. A body, an inner blade rotary base supported by the drive body and reciprocating together with the drive body, and an inner blade base rotatably supported by the inner blade rotary base with the longitudinal direction as a rotation axis direction. A plurality of inner blades mounted side by side on the inner blade base in a direction orthogonal to the longitudinal direction thereof, an outer blade rotary base detachably mounted on the main body, and the outer blade having the longitudinal direction as a rotation axis direction. It is characterized by comprising an outer blade holder rotatably supported by the blade rotary base and an outer blade attached to the outer blade holder.

[0018]

According to this structure, the driving body is fixed to the main body,
An inner blade rotary table is attached to the driving body, and an inner blade table having an inner blade is rotatably attached to the inner blade rotary table. Further, an outer blade rotary table is attached to the main body, and an outer blade holder having an outer blade is rotatably attached to the outer blade rotary table.

That is, the outer blade is provided rotatably with respect to the main body independently of the inner blade, and the inner blade is rotatably provided on the driving body side. Therefore, when the inner blade is reciprocated by the drive of the driving body, vibration is not transmitted to the outer blade portion (outer blade, outer blade holder and outer blade rotary table), and the inner blade portion (inner blade, inner blade table). And inner blade rotary table) only vibrates. That is, since the vibration generated by the driving of the driving body has only the energy corresponding to the mass of the inner blade portion, the generated vibration and the noise accompanying the vibration are very small.

Further, the driving body is fixed to the support portion of the main body, and the outer blade holder is rotatably supported on the outer blade rotary table attached to the main body. That is, it is possible to prevent the width dimension of the driving body from affecting the width dimension of the outer blade holder by setting the outer blade holder that rotates with respect to the main body at a position apart from the driving body.

Further, since the outer cutter rotary table is detachably attached to the main body, the outer cutter part (outer blade, outer cutter holder and outer cutter rotary table) can be removed by removing the outer cutter rotary table from the main body. It is possible to remove the whiskers adhering to the outer blade portion and easily perform cleaning. Also, by removing the outer blade rotary base from the main body, the upper part of the main body can be opened to expose the inner blade parts (inner blade, inner blade base and inner blade rotary base), so it adheres to the inner blade part. It is possible to easily perform cleaning to remove the shavings.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electric shaver of the present invention will be described with reference to FIGS. This embodiment is directed to an electric razor having two inner blades. Also,
In the description of the embodiment, the positional relationship in the vertical direction is described on the assumption that the main body case is set up and the specification is made.

Reference numeral 21 in the drawing is a vertically long main body case, and a motor 22 is stood up and stored inside the case.
Is fixed to the main body case 21 with bolts 61.
A rotating body 23 is attached to the output shaft 22a protruding from the upper end of the motor 22, and a drive pin 24 is attached to the rotating body 23 at a position eccentric to the output shaft 22a. The drive pin 24 projects from a hole 21a formed at the upper end of the body case 21.

A pair of projecting portions 25 facing upward are provided at both ends in the width direction at the upper end of the main body case 21.

Reference numeral 26 denotes a driver case, which has a horizontal main body 27, and projections 28 having grooves 29 are formed at upper ends of both ends of the main body 27 in the longitudinal direction.
Legs 30 are formed at both ends of the leg portion downward. An opening 27a is formed in the center of the main body 27.

The drive case 26 is the main case 2
1. A pair of leg portions 30 are provided on the upper end portion of the main body 1 from above, and a pair of leg portions 30 are formed in the recesses 21 formed in the walls at both widthwise end portions of the main body case 21.
The pair of protrusions 28 are engaged with the pair of protrusions b of the main body case 21 from above. In this embodiment, the projecting portions 25 and 28 are combined to form the support portion of the main body.

In the figure, 31 is a driver, which is the main body case 2.
It is arranged in a space surrounded by the upper end surface of No. 1 and the drive body case 26. The drive body 31 has thin elastic portions 34 continuously formed at both ends of a rigid main portion 32, and rigid end portions 33 are continuously formed at each thin elastic portion 34. A rectangular tube portion 35 is formed upright in the center of the main body portion 32. Further, as shown in FIG. 2, a groove 36 extending in the width direction is formed on the lower surface of the main body 32.

The driving body 31 is arranged along the width direction of the main body case 21, and as shown in FIG. It is sandwiched by the lower surface of the protruding portion 28.
Then, the pair of end portions 33 of the driving body 31 and the main body case 21.
The pair of protrusions 25 and the pair of protrusions 28 of the driving body case 26 are fixed by screws 37. As a result, the main body 32 is supported by the thin elastic portion 34 so as to be able to reciprocate.

The rectangular tube portion 35 formed on the main body portion 32 of the driving body 31 has an opening 27a in the main body portion 27 of the driving body case 26.
Penetrates through and protrudes upward.

In the figure, numeral 38 is an inner blade rotary table, which is an elongated one along the longitudinal direction of the main body portion 27 of the drive body case 26,
Both ends in the longitudinal direction are erected to form shaft holes 39. In addition, a rectangular protrusion 40 is provided at the lower center of the inner blade rotary table 38.
Are formed. Then, as shown in FIGS. 2 and 4, the inner blade rotary base 38 is arranged above the main body 27 of the drive body case 25, and the rectangular protrusions 40 form the main body 32 of the drive body 31.
The rectangular cylindrical portion 35 is formed so as to be vertically movable inward from the opened upper end thereof.

The combination of the prismatic tube portion 35 and the prismatic projection 40 prevents the inner blade rotary base 38 from rotating about the vertical axis, and as shown in FIGS. The formed engagement portion 40a and the engagement portion 35a formed on the square tubular portion 35 are engaged with each other, and the square protrusion 40 is prevented from coming out of the square tubular portion 35.

A compression coil spring 52 is arranged upright between the bottom surface of the rectangular tube portion 35 of the driving body 31 and the lower surface of the square protrusion 40 of the inner blade rotary table 38. Is supported and pushed upward.

An inner blade base 41 is arranged above the inner blade rotary base 38. This inner blade base 41 is formed, for example, by arranging two inner blade support portions 41a in parallel, and a horizontal rotary shaft 42 is provided at each of the end portions formed upright at the center of both ends in the longitudinal direction. There is. These rotary shafts 42 are the inner blade rotary table 3
8 are rotatably inserted in shaft holes 39 respectively formed at both ends. As a result, the inner blade base 41 becomes a horizontal rotary shaft 42.
It is rotatably supported around.

Two inner blade supporting portions 41 of the inner blade base 41
Inner blades 43 are arranged in a, respectively.
The mounting pin 44 is mounted by passing it through a mounting hole 45 formed in the inner blade supporting portion 41a as shown in FIG.

In the figure, reference numeral 46 denotes an outer cutter rotary table, which has a rectangular frame shape. Engaging claws 47 having elasticity are formed at the centers of the inner surfaces of both ends in the longitudinal direction of the outer blade rotary base 46, and grooves 48 extending in the vertical direction are formed on the inner surfaces of the engaging claws 47. . Further, recesses 49 are formed on the outer surfaces of both ends of the outer blade rotary table 46.

The outer cutter rotary base 46 is the drive unit case 2
6 is arranged on the upper surface of the main body 27 of the inner blade rotary table 38,
It surrounds the inner blade base 41 and the inner blade 43. Outer blade turntable 4
Both ends in the width direction of 6 rest on the upper surface of the main body 27, and the engaging claws 47 at both ends in the longitudinal direction are inserted into the grooves 29 formed in the pair of projecting portions 28 of the drive body case 26.

The pair of projecting portions 28 of the driving body case 26 is provided with a structure for fixing the outer cutter rotary base 46 in combination with each engaging claw 47 of the outer cutter rotary base 46. That is, as shown in FIGS. 1 and 2, the groove 2 is formed in the end 28a of the protrusion 28.
Engagement holes 50 into which the engagement claws 47 inserted in 9 are engaged are formed. An opening 51 is formed at the end 28a of the protrusion 28, and an engagement release button 53 is arranged in the opening 51.

The disengagement button 53 is rotatably supported by a shaft 54, and is rotated outward about the shaft 54 by a compression coil spring 55 arranged between the other wall of the groove 29. Power is added to move.
The upper end of the engagement release button 53 is engaged with the hole 50 of the end portion 28a to restrict the outward rotation, and the upper end overlaps with the tip of the engaging claw 47 engaged with the hole 50. There is.

As a result, the disengagement button 53 is rotated toward the inner side of the outer cutter rotary base 46 about the shaft 54 against the spring force of the compression coil spring 55, whereby the upper end of the engagement release button 53 is rotated. Is engaged with the hole 50 of the end 28a.
The tip of 7 is pushed and removed from the hole 50. Therefore, the outer blade rotary table 46 can be removed from the drive body case 26.

Reference numeral 56 in the drawing denotes an outer blade holder, which has a rectangular frame shape slightly smaller than the outer blade rotary base 46. In this outer blade holder 56, two outer blades 57 are arranged side by side so as to face the two inner blades 43 mounted on the inner blade base 41, and these outer blades 57 are mounted outside by an outer blade mounting plate 58. It is attached to the blade holder 56.

Further, a horizontal rotary shaft 59 is provided on elastic pieces 60 formed on the walls at both ends in the longitudinal direction of the outer blade holder 56. The outer blade holder 56 is arranged on the upper side of the outer blade rotary table 46 so as to be overlapped with each other, and the rotary shafts 59 at both ends are rotatably and vertically movably inserted and held in the grooves 47 at both ends of the outer blade rotary table 46. . Therefore, by loosening the elastic piece 60 and removing the rotary shaft 59 from the groove 47, the outer blade holder 56 can be removed from the outer blade rotary base 46.

In this state, the outer blade holder 56 and the outer blade 5
Reference numeral 7 covers the inner blade rotary base 28, the inner blade base 41 and the inner blade 43. Since the inner blade rotary table 38 is pushed up by the compression coil spring 52 and the inner blade base 41 provided with the inner blade 43 is pushed up, each inner blade 43 has each outer blade 57 of the outer blade holder 56.
To the inside from the inside. Therefore, an upward force is applied to each outer blade 57 by the inner blade 43, and the rotary shaft 59 rises along the groove 48 of the outer blade rotary base 46, so that the outer blade holder 56 is pushed up.

In this state, the rotary shaft 42 of the inner blade base 41 (the center of rotation of the inner blade) and the rotary shaft 59 of the outer blade holder 56 are designed to be located at the same height.

The operation of the thus constructed electric shaver will be described.

The rotating body 23 is rotated by the rotation of the motor 22 provided in the main body case 21, and the drive pin 24 is eccentrically rotated. The rotation of the drive pin 24 is transmitted to the drive body 31 via the groove 36, and the drive body 31 is provided with the thin elastic portions 3 on both end sides.
It is reciprocated using the elasticity of No. 4.

The reciprocating motion of the driving body 31 is transmitted to the inner blade rotary base 38 via the compression coil spring 52, and the inner blade base 41 and the inner blade 43 supported by the inner blade rotary base 38 reciprocate. Therefore, the inner blade 43 reciprocates while slidingly contacting the outer blade 57.

When shaving, the outer blade 5
7 is applied to the skin of the user's face, the beard growing on the skin is passed through a large number of small holes formed in the outer blade 57, and the inner blade 4
Cut by the reciprocating motion of 3.

When the main body case 21 is pushed toward the skin, the outer blade 57 bends downward and the compression coil spring 52 compresses to compress the inner blade rotary table 38, the inner blade table 41 and the inner blade 43. Moves downward. In this way, the pressure with which the outer blade 57 contacts the skin can be adjusted.

Further, when the main body case 21 is tilted according to the form of the skin, as shown in FIG. 3, the inner blade base 41 is rotated about the rotary shaft 42 by a predetermined angle according to the tilt of the main body case 21. The inner blade 43 also rotates integrally.

Further, the outer blade holder 56 rotates about the rotation shaft 59 at the same angle as the inner blade base 41 in accordance with the inclination of the main body case 21, and the outer blade 57 also rotates integrally. Therefore, the outer blade 57 and the inner blade 43 can be applied to the skin in a constant state regardless of the inclination of the main body case 1 according to the form of the skin.

According to the electric shaver having such a structure,
The driving body 31 is fixed to the projecting portion 25 of the main body case 21 and the projecting portion 28 of the driving body case 26, which are a pair of projecting portions,
An inner blade rotary table 38 is attached to the driving body 31, and an inner blade table 41 having an inner blade 43 is rotatably attached to the inner blade rotary table 38.

An outer blade rotary table 46 is attached to a pair of protrusions of the main body case 21, and an outer blade 57 is attached to the outer blade rotary table 46.
An outer blade holder 56 provided with is rotatably attached.

That is, the outer blade 57 is rotatably provided with respect to the main body independently of the inner blade 43, and the inner blade 43 is rotatably provided on the driving body 31. Therefore, the driver 3
When the inner blade 43 is reciprocated by the drive of No. 1, the outer blade portion (the outer blade 57, the outer blade holder 56 and the outer blade rotary table 4
No vibration is transmitted to 6) and the inner blade portion (inner blade 43, inner blade base 4
Only 1 and the inner blade rotary table 38) vibrate. That is,
Since the vibration generated by the driving of the driving body 31 has only the energy corresponding to the mass of the inner blade portion, the vibration generated during the operation and the noise accompanying the vibration are very small.

Further, the driving body 31 is fixed to the main body, and the outer blade holder 56 is rotatably supported by the outer blade rotary table 46 attached to the main body. That is, by setting the outer blade holder 56 that rotates with respect to the main body at a position apart from the driving body 31, the width dimension of the driving body can be adjusted.
It is possible to prevent the width dimension of 6 from being affected.

The driving body 31 is fixed to the pair of protrusions 25 of the main body case 21, and the outer blade holder 56 having the outer blade 47 rotates at a position separated from the driving body 31. That is, the width dimension of the driving body 31 does not affect the outer blade holder 56 that is the rotating portion. Since the outer blade holder 56 only sets the necessary width dimension by itself, the widthwise ends of the outer blade holder 56 overhang from the thicknesswise ends of the main body case only slightly. Further, since the outer blade rotary base 46 is detachably attached to the drive body case 26, the outer blade rotary base 46 is attached to the drive body case 2.
By removing from 6, the outer blade portion (outer blade 57, outer blade holder 56 and outer blade rotary base 46) can be removed from the main body case 21 side, and cleaning for removing whiskers adhering to the outer blade portion can be facilitated. It can be carried out.

Further, the outer cutter rotary base 46 is attached to the drive unit case 21.
And the inner blade portion (the inner blade 43, the inner blade base 41, and the inner blade rotary base 3) by opening the upper part of the drive body case 26 by removing
Since 8) can be exposed, it is possible to easily perform cleaning for removing the whiskers attached to the inner blade portion.

The present invention is not limited to the above-mentioned embodiments, but can be modified in various ways.

[0058]

As described above, according to the electric shaver of the present invention, the generation of vibration and noise during operation is reduced, and the overhang from both ends in the thickness direction of the main body during rotation of the cutter is reduced. In some cases, overhang can be eliminated, and in addition, the outer blade can be removed by a simple operation, so that the outer blade and the inner blade can be easily cleaned.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an electric shaver according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the electric shaver according to the embodiment.

FIG. 3 is a cross-sectional view showing the electric shaver according to the embodiment.

FIG. 4 is an explanatory view showing a connecting portion between a driving body and an inner blade rotary table in the embodiment.

FIG. 5 is an exploded perspective view showing an example of a conventional electric shaver.

FIG. 6 is a diagram showing a cutter block in the conventional electric shaver.

FIG. 7 is a cross-sectional view showing a cutter block in the conventional electric shaver.

[Explanation of symbols]

21 ... Main body case, 22 ... Motor, 26 ... Driving body case, 31 ... Driving body, 38 ... Inner blade rotary table, 41 ... Inner blade stand, 43 ... Inner blade,
46 ... Outer blade rotary table, 56 ... Outer blade holder,
57 ... Outer blade.

Claims (1)

[Claims] 1. A main body on which a motor is mounted, a driving body which is fixed to the main body and reciprocates in response to the rotation of the motor, and a reciprocating motion supported by the driving body together with the driving body. Inner blade rotary table, an inner blade table rotatably supported by the inner blade rotary table with the longitudinal direction as the axis of rotation, and the inner blade table mounted side by side in the direction orthogonal to the longitudinal direction. A plurality of inner blades, an outer blade rotary table detachably attached to the main body, an outer blade holder rotatably supported by the outer blade rotary table with the longitudinal direction as a rotation axis direction, and the outer blade holder. An electric razor, comprising: an outer blade attached to a blade holder.