JP2009201715A - Electric shaver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the lock mechanism of the inclination angle of a head in an electric shaver. <P>SOLUTION: When an unlocking button 61 which is provided with a shaft member 62 and through which the shaft member is passed slidably from the outer side of a bracket arm 11 at the upper end of a handle is pressed inward, the shaft member 62 on the button pushes a lock plate 65 inside the head 2 inward opposing a spring 68 to disengage the lock plate 65 and the bracket arm 11, and the inclination of the head 2 is allowed in the state. When the pressurization of the unlocking button 61 is released, the head 2 can be locked. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric razor in which a head portion having a blade unit is supported on a handle portion so as to be tiltable.

An electric razor that supports a head portion including a blade unit on a handle portion so as to be tiltable and can change the angle of a shaving blade with respect to the handle portion is implemented (for example, Patent Document 1).
Real application 61-6372

The conventional electric razor has a complicated structure that supports the head portion rotatably and locks it at the head tilt position, and has a large number of parts, which takes time for assembly.
The present invention clarifies an electric shaver that simplifies the rotation support structure of the head portion, is easy to assemble, can be reliably locked, and is easy to unlock.
The present invention also clarifies an electric razor that can be realized by shaving a shaver by pulling an electric razor like a T-shaped razor, which was not expected in a conventional electric razor. .

Claim 1 supports the head part (2) provided with the blade unit (3) in a tiltable manner between bracket arms (11) (11) projecting on both sides of the tip of the handle part (1), and locks it. An electric razor capable of locking the head part (2) by means of means (6) with a plurality of tilt positions;
The lock means (6) includes a shaft release member (61) that includes a shaft member (62) and that slidably penetrates the shaft member from the outside of the bracket arm (11).
The bracket arm (11), the convex portion (66) and the concave portion are arranged on the head portion (2) so as to be slidable on the central axis of rotation of the head portion and tiltable integrally with the head portion (2). The lock plate (65) capable of locking the tilt angle of the head portion (2) by the engagement of the engaging / disengaging means (60) by (67), and the lock plate (65) and the bracket arm (11) cannot be disengaged. And a spring (68) that presses and urges the lock plate (65).

  According to a second aspect of the present invention, in the electric shaver according to the first aspect, the engagement / disengagement means (60) is provided on the lock shaft (66a) protruding from the lock plate (65) and the bracket arm (11). 66a) is a lock hole (67a) that can be fitted.

  According to a third aspect of the present invention, in the electric shaver according to the second aspect, the lock plate (65) is accommodated in an end portion in the head portion (2), and the lock shaft (66a) is an end plate (23) of the head portion (2). ).

  According to a fourth aspect of the present invention, in the electric shaver according to any one of the first to third aspects, the shaft member (62) of the unlocking button (61) includes the bracket arm (11) and the end plate (23) of the head portion (2). ) Is slidably fitted to a cylindrical shaft (7) that extends through the cylindrical shaft (7). The cylindrical shaft (7) has retaining pieces (71) and (72) at both ends, and the end plate (23) of the head portion (2). ) Has a notch (25a) through which the inner end side projecting piece (72) of the cylindrical shaft (7) can penetrate a part of the hole (25) into which the cylindrical shaft (7) is fitted. When the shaft (7) is passed through the head end plate (23) and then the cylindrical shaft (7) is rotated to change the phase of the projecting piece (72), the projecting piece (72) is attached to the cylindrical shaft (7). It will be retained.

According to a fifth aspect of the present invention, in the electric razor according to any one of the first to fourth aspects, the head unit (2) has the blade unit (3) in a substantially horizontal direction with the handle unit (1) supported vertically. It can be locked at a plurality of tilt positions including the shaving tilt position, which is the basic tilt position, and the shaving tilt position when the blade unit (3) is substantially upward.
Since the inclination of the head part (2) can be fixed by the locking means (6), the angle of the head part (2) does not change during use, and it can be used safely.

  A sixth aspect of the present invention is the electric razor according to the fifth aspect, wherein the head portion (2) is approximately 80 ° in a shaving inclination position with respect to an extended line passing through the head portion (2) of the shaft core P1 of the handle portion (1). Inclined and shaved, tilted approximately 20 °.

  According to a seventh aspect of the present invention, in the electric shaver according to any one of the first to sixth aspects, the eccentric rotation shaft (16) projects from the handle portion (1) at the tip of the handle portion (1), and the head portion (2) is the handle portion ( 1) It is attached between bracket arms (11) and (11) projecting on both sides of the tip so that it can be tilted, and the head (2) is bent at the bottom of the handle (1) side in the tilting direction of the head (2). Head body case (21), outer blade cassette (30) detachably attached to the head body case (21), and the eccentric rotation shaft (1) loosely passing through the bottom plate (22) of the head body case (21) ( 16) The vibrator (4) that reciprocates in the direction orthogonal to the handle portion (1) and the vibrator that slides from the inside to the outer cutters (32), (33) of the outer cutter cassette (30) from above. It is composed of inner blades (35) and (35) which are attached to (4) and reciprocate integrally with the vibrator, and the vibrator (4) is capable of sliding contact with the eccentric rotation shaft (16). Hold the vibrator (4) The guide plates (43) and (43) are orthogonal to and parallel to the reciprocating direction, and the guide plate (43) has an arc edge (43a) along the curvature of the bottom of the head body, and both guide plates (43 ) (43) is provided with a projecting piece (44) projecting outward along the arc edge (43a). The bottom plate (22) of the head portion (2) is provided with an eccentric rotating shaft (16). A slot (28) having a width to avoid interference with the slot is established, and the closing piece (44) closes the slot (28) even if the vibrator (4) vibrates in the width direction of the slot (28). .

  An electric shaver according to any one of claims 1 to 7, wherein the handle portion (1) is vertically oriented and the head portion (2) at the upper end of the handle portion (1) is horizontally oriented. In 3), the outer shaving blade (32), the rough shaving outer blade (33), and the finished shaving outer blade (34) are arranged in order from the bottom, and the outer surface of each outer blade (32), (33), (34) is approximately The angle between the plane F and the shaft core P1 of the handle portion (1) is 10 to 20 °, and the finished shaving outer blade (34) is at the farthest position with respect to the shaft core P1. is there.

  Claim 9 is the electric razor according to claim 7 or 8, wherein the head body case (21) is pushed up to push the shaving outer blade (32) to the shaving position on the front side facing the shaving inclination position. On the back surface of the knob (55), a cleaning window hole (51) and a lid plate (52) for closing the cleaning window hole (51) are attached.

  A tenth aspect of the present invention is the electric razor according to any one of the first to ninth aspects, wherein the handle portion (1) is formed in a shaft shape, and the head portion (2) side is enlarged in a substantially T shape, and is formed at both ends of the enlarged portion. Bracket arms (11) and (11) are projected, and the head portion (2) is attached between the bracket arms (11) and (11).

When the unlocking button (61) is pushed inward, the shaft member (62) on the button (61) moves the lock plate (65) against the spring (68). The engagement between the projections (66) and the recesses (67) of the lock plate (65) and the bracket arm (11) can be released by pushing in the direction, and the inclination of the head part (2) is allowed in this state. By tilting the head portion (2), the tilt of the head portion (2) can be locked at a position where the convex portion (66) and the concave portion (67) are engaged with each other.
By simply pressing the unlock button (61), the tilt of the head (2) can be released, and if the unlock button (61) is released when the head (2) is rotated, Next, at a position where the convex portion (66) and the concave portion (67) coincide with each other, the lock plate (65) moves to the lock position by being pushed by the spring (68), and the head portion (2) is automatically and reliably moved. Locked.
Since the lock release button (61) directly presses the lock plate (65) by the shaft member (62), a pressing force can be applied without loss.
If the locking means (6) is formed with a convex part (66) and a concave part (67) on the lock plate (65) and the bracket arm (11), the lock release button (61), lock plate (65), spring It is only necessary to add (68), the number of parts is small, and assembly is easy.
If the end of the shaft member (62) of the unlocking button (61) is secured, the unlocking button (61) is always urged in the direction of withdrawal by the spring (68) via the locking plate (65). It is possible to eliminate rattling of the unlock button (61) by always applying spring tension to the unlock button (61).

  The electric razor engagement / disengagement means (60) according to claim 2 is configured such that the lock shaft (66a) protruding from the lock plate (65) is fitted into the lock hole (67a) formed in the bracket arm (11) to Since (66a) is locked to withstand the rotational force in the shearing direction, it can be locked securely.

  The electric razor according to claim 3 can house the lock plate (65) and the spring (68) in the head portion (2). Therefore, the head portion incorporating the lock plate (65) and the spring (68). (2) can be assembled to the bracket arms (11) and (11) of the handle portion (1), and this assembling work can be performed easily and efficiently.

The electric shaver according to claim 4 is attached to the cylinder shaft (7) from the outside of the bracket arm (11), with the cylinder shaft (7) in phase with the inner retaining piece (72) of the head body case (21). Fit the bracket arm (11) and the head body case (21) over the notch (25a) of the hole (25), and turn the cylinder shaft (7) to adjust the phase of the retaining piece (72). All you have to do is change it.
The cylindrical shaft (7) will not come out unless the retaining piece (72) and the protruding step (13) of the notch (25a) are coincident. That is, it is possible to reliably prevent the head portion (2) from slipping out between the bracket arms (11) and (11).
The cylindrical shaft (7) can also contribute to a reduction in the number of parts by serving as a slidable guide for the shaft member (62) of the unlocking button (61), and the shaft member (62) is buckled. Can be effectively prevented.

If the head part (2) is in the shaving inclination position shown in FIG. 2a, the head part (2) is slid to the face so that the handle part (1) is pulled. (Shaving).
In the case of shaving, the skin is not pressed more than necessary with the blade surface, and the skin can be prevented from being damaged and hurt. In addition, since the force is not applied more than necessary, the muscle load on the arm can be reduced.
If the head portion (2) is set to the sharp shaving inclination position shown in FIG. 2c, shaving can be performed in the same manner as a conventional electric shaver.
If the head portion (2) is set to the intermediate tilt position shown in FIG. 2b, the head portion (2) can be shaved to push up the skin in the same manner as a conventional electric razor.
For example, as shown in FIG. 18, shave under the jaw and shave beside the face in FIG. 19 can be performed more smoothly than conventional push shave.

  The electric shaver according to the sixth aspect has the same effect as the fifth aspect.

In the electric razor according to claim 7, the vibrator (4) sandwiches the eccentric rotation shaft (16) so as to be in sliding contact with the parallel guide plates (43) (43), and the guide plates (43) (43) An arc edge (43a) curved in the rotation direction of the head part (2) is opposed to the bottom plate (22) of the head body case (21) from the inside, and the bottom plate (22) has an eccentric rotation shaft (interference with 16). Since the slot (28) is prevented, there is no hindrance to the tilting of the head part (2).
Even if the vibrator (4) vibrates in the field direction of the slot (28), the closing pieces (44) (44) protruding outward from the guide plates (43) (43) of the vibrator (4) Covers the groove (28), so that foreign matters such as sawdust can be prevented from entering and leaving the groove (28). Further, the closing pieces (44) and (44) serve as reinforcing ribs of the guide plates (43) and (43), and can contribute to the thinning of the guide plates (43) and (43).

The electric razor according to claim 8, when shaving, first shave a long heel with a shave outer blade (32) and roughly shave a heel that is normally extended with a shave outer blade (33). Since the finishing shave can be finished with the finishing shave outer blade (34), it is possible to perform an effective shave with little unshave.
Further, the outer surfaces of the outer shave blade (32), the rough shave outer blade (33), and the finished shave outer blade (34) are substantially in the same plane, and the same surface F is on the shaft core P1 of the handle portion (1). 10 to 20 degrees with respect to the shaft core P1, the finished shave outer blade (34) is tilted so that it is the highest, so when you shave, you can move all your hands naturally without having to move your hands. The blade touches the skin and can realize an effective shaving.

As shown in FIG. 20, the electric shaver according to claim 9 opens sideways when the cleaning window hole (51) of the head body case (21) is opened and water is poured into the head body case (21) from above. It is drained from between the blades and can be cleaned effectively.
The outer shave (32) has a rougher blade than the rough shave (33) or the finished shave (34). The cleaning window hole (51) is provided on the back side of the head body case (21), i.e., at a position far from the outer shaving (32) when the blade is roughest. ) Is poured into the head body case (21) and thoroughly washed, and then discharged from the eyes of each blade and other gaps. For this reason, effective cleaning can be realized only by adding flowing water.
When the head part (2) is shaved and tilted, and the handle part (1) is gripped with the front facing downward, the cleaning window hole (51) faces upward, and each outer blade (32) (33) (34) Since the washing drainage flows laterally away from the handle portion (1), it can be prevented from splashing on the handle portion (1) and the hand.

  The shape of the handle portion (1) of the electric razor according to claim 10 has a conventional T-shaped safety razor when shaving the chin shaving shown in FIG. 18 and the shaving beside the face shown in FIG. Can have an electric razor at intervals and is easy to use.

As shown in FIGS. 1 and 3, the electric shaver according to the present invention has a head portion provided with a blade unit (3) between bracket arms (11) and (11) projecting on both ends of the handle portion (1). The head portion (2) can be locked at a plurality of tilt positions by the lock means (6).
A power switch (10) is provided at the upper center of the front surface of the handle portion (1).

FIG. 2 shows the tilt lock position of the head portion (2). In the embodiment, the head portion (2) can be locked with three tilt positions.
2a is a basic position of the head part (2) when the electric shaver of the present invention is used, and is a shaving tilt position where the head part (2) is substantially lateral, and FIG. 2c is a head part (2) being substantially upward. FIG. 2b shows an intermediate tilt position that is an intermediate position between the two tilt positions.
The shaving tilt position in FIG. 2c is also suitable for cleaning the inside of the head portion (2) of the electric razor as shown in FIG.
The intermediate tilt pojon is preferable because it is not necessary to raise the elbow when shaving.
The angle formed between the extension line passing through the head part (2) of the axis P1 of the handle part (1) and the tilt axis P2 of the head part (2) is approximately 80 ° in the shaving inclination position and in the intermediate inclination position. The axis P1 of the handle portion (1) is about the center of the cylinder axis of the handle.
The tilt axis P2 of the head part (2) is the center of rotation (tilt center) of the head part (2) and the center of the width of the rough shaving outer blade (33) located at the center of the head part (2) described later. It is assumed that the axis passes through.

As shown in FIG. 1, the handle portion (1) is formed in a hollow shaft shape, and the head portion (2) side is enlarged in a substantially T shape. The handle part (1) is slender and can be rounded over the entire circumference so that it can be grasped as if holding a pen.
On both the left and right sides of the handle part (1), there are formed the gripping surfaces (17) gently recessed in an arc shape from the base end side of the bracket arm (11) toward the base end side of the handle part (1). Yes.
As shown in FIG. 18 and FIG. 19, when the bracket arm (11) side of the handle portion (1) is gripped from the back side of the handle portion (1), one gripping surface (17) is placed on the belly of the first finger. The other knob contact surface (17) hits the belly of the second finger and / or the third finger.
The knob contact surface (17) is formed of a non-slip material and / or has a non-slip process.
The shape of the handle part (1) described above is such that when shaving the chin under the chin shown in FIG. 18 or the shaving beside the face shown in FIG. 19, an electric razor is used at intervals having a conventional T-shaped safety razor. Easy to use and have.

  The upper end surface of the bracket arm (11) (11) of the handle portion (1) is formed as a concave arc surface (14) along the rotation direction of the head portion (2), and the handle portion rear surface is slightly at the center in the width direction. An eccentric rotating shaft (16) is provided so as to protrude upward. The eccentric rotation shaft (16) rotates eccentrically and reciprocally vibrates a vibrator (4) to be described later from side to side.

As shown in FIG. 4, the head portion (2) includes a head main body case (21), a vibrator (4), inner blades (35) and (35), and an outer blade cassette accommodated in the head main body case (21), respectively. (30).
The head main body case (21) is pivotally supported between the bracket arms (11) and (11), and is connected to the lower case (21a) stacked on the lower case (21a). And an upper head case (5).

As shown in FIGS. 8 and 14, the lower case (21 a) is a horizontally long casing having an open top surface, and the bottom plate (22) is formed in an arcuate surface with the center of rotation of the head portion (2) as the radius center. In other words, the handle portion (1) is formed so as to be along the upper end recessed arc surface (14). In the bottom plate (22), a slot (28) in which the eccentric rotation shaft (16) is loosely fitted is formed in the arc direction.
The slot (28) extends in a range where the head portion (2) does not interfere with the eccentric rotation shaft (16) even if the posture of the head portion (2) is changed from the shaving inclination position to the shaving inclination position.
The inner surface of the lower case bottom plate (22) is formed with a relief step (29) that is lowered over the entire length of the hole edge of the slot (28).
As shown in FIGS. 8 and 11, both ends of the lower case (21a) are partitioned into small chambers (27) and (27), and circular recesses are formed on the surfaces of both end plates (23) of the lower case (21a). The portions (24) and (24) are formed concentrically, and a circular hole (25) is formed at the center of the recessed step portion (24).
The hole (25) is provided with notches (25a) and (25a) at 180 ° symmetrical positions.
Guide holes (26) and (26) are formed in the recessed step (24) at 180 ° symmetrical positions with the hole (25) in between.

As shown in FIG. 8, in the lower case (21a), the vibrator (4) is arranged in connection with the eccentric rotation shaft (16).
The vibrator (4) has an inner blade mounting seat (41) and flexible arm pieces (42) (42) at both ends of the inner blade mounting seat (41) in the same manner as a conventional electric razor. The free ends of the flexible arm pieces (42) and (42) are attached to a mounting boss (not shown) on the lower case (21a) by screwing.
Guide plates (43) and (43) project in parallel to the reciprocating direction of the vibrator (4) with the eccentric rotation shaft (16) slidably contacted with the lower surface of the inner blade mounting seat (41). It is installed.
The guide plate (43) (43) has an arc edge (43a) along the curvature of the bottom plate (22) of the lower case (21a), and is closed outwardly along the arc edge (43a) ( 44) (44) is protruding.
The arc edge (43a) of the guide plate (43) (43) is fitted in the relief step (29) on both sides of the groove (28) provided in the bottom plate (22) of the head lower case (21a). .
The vibrator (4) vibrates in the longitudinal direction of the lower case (21a) when the guide plates (43) and (43) are pushed right and left by the eccentric rotation of the eccentric rotation shaft (16). Even if the vibrator (4) vibrates, the blocking pieces (44) and (44) block the relief step (29), that is, the groove hole (28), and prevent foreign matter from entering and exiting the groove hole (28). it can.

A vibrator cover (46) that closes the opening is attached to the upper surface opening of the lower case (21a). The vibration cover (46) has an opening (46a) corresponding to the position of the vibrator (4), and a rubber cap (not shown) is attached to the opening.
The vibrator (4) is provided with a connecting member (45) in the upper part thereof through the rubber cap.
As shown in FIG. 9, the connecting member (45) includes two mounting leg pieces (45a) (45a) for attaching the inner blades (35) and (35) and an engaging portion for driving the outer shaving outer blade (32) ( 45b).

  As shown in FIG. 9, the blade unit (3) includes two inner blades (35) (35) that are detachably fitted to the mounting leg pieces (45a) (45a) of the connecting member (45), An outer blade cassette (30) having two outer blades (33) and (34) covering the inner blades (35) and (35) and a shaving outer blade (32), and an upper portion of the head on the lower case (21a) And a case (5).

  The inner blade (35) includes a blade plate obtained by bending a metal plate having a row of slit holes into an inverted U-shaped cross section (for example, Japanese Patent Application Laid-Open No. 2006-340938).

The outer blade cassette (30) shown in FIGS. 9 and 10 has three horizontally long outer blades (32), (33) and (34) arranged in parallel in a horizontally long blade-like blade body case (31) having upper and lower openings. They are housed side by side. The rough shave outer blade (33) is positioned between the outer shave outer blade (32) and the finished shave outer blade (34), and each outer blade (32) (33) (34) is the upper end of the blade case (31). Projected from the opening.
Each of the rough shave outer blades (33) and the finished shave outer blade (34) each has a mesh blade (33a) (34a) in which a large number of small holes are formed in a thin metal plate, and a horizontally long frame base with upper and lower surfaces opened ( 33b) and 34b are fixedly formed.
The outer shaving blade (32) is formed by bending a metal plate in an inverted L shape and forming a plurality of notches in a row at a bent portion as a cutting edge.
The outer shaving blade (32) is attached to an auxiliary member (32a) described later.
As shown in FIG. 4, an outer blade protection cover (20) is detachably attached to the outer blade cassette (30).

FIG. 16a shows the hole pattern of the cutting edge of the finished shaving outer blade (34), and FIG. 16b is an enlarged view of the hole pattern of one unit.
FIG. 17a shows the hole pattern of the cutting edge of the razor outer blade (33), and FIG. 17b is an enlargement of the hole pattern of one unit.
Both the rough shaving outer blade (33) and the finish shaving outer blade (34) have 5 holes (39) and (39a) at approximately equal intervals around the central hole (38) and (38a). The holes (38) and (39) of the finished shaving outer blade (34) are more rounded than the holes (38a and 39a) of the rough shaving outer blade (33).
The blade hole pattern of the outer shaving outer blade (32) may be the same as before.
When water is poured into the blade body case (31), the finish shaving outer blade (34) allows water to pass through more than the rough shaving outer blade (33) or the finish shaving outer blade (34).

The blade case (31) incorporates an auxiliary member (32a) for pushing the outer shaving outer blade (32) to the upper shaving height, and the auxiliary member (32a) has an outer shaving outer blade (32). It is attached. The auxiliary member (32a) is biased by a spring (not shown) in the direction in which the outer shaving outer blade (32) is submerged in the blade body case (31).
The auxiliary member (32a) is provided with a shaving inner blade (not shown) so that the inner surface of the shaving outer blade (32) can be slidably contacted, and the inner shaving blade is provided via a link piece (56). The reciprocating slide is connected to the engaging portion (45b) on the connecting member (45).

  As shown in FIG. 2a, at the lower end position of the outer shaving blade (32), the outer shaving blade (32) and the rough shaving outer blade (33) with respect to the upper surface opening (31a) of the blade case (31). The projecting height increases in the order of the finish shaving outer blade (34), and the outer surfaces of the outer shaving outer blade (32), the rough shaving outer blade (33), and the finishing shaving outer blade (34) are substantially in the same plane F. It's aligned.

The head upper case (5) shown in FIG. 9 is formed in a horizontally long frame housing whose upper and lower surfaces are open. From the upper surface opening, the outer cutter cassette (30) ). In this state, the inner cutters (35) and (35) are in sliding contact with the inner surfaces of the rough shaving outer cutter (33) and the finish shaving outer cutter (34).
The head upper case (5) is provided with a push-up knob (55) slidable in the lateral direction to push up the outer shaving blade (32) on the front.
As shown by the phantom line in FIG. 2c, when using for the shaving, the shaving outer blade (32) is pushed up in the same manner as before.
By arranging the push-up knob (55) in front of the head upper case (5), as shown in FIGS. 18 and 19, when the head part (2) is tilted to the shaving and tilting position, the push-up knob ( Since 55) faces inward, it is possible to prevent malfunctioning by touching the push-up knob (55) during shaving.

On the back surface of the head upper case (5), a horizontally long cleaning window hole (51) occupying 1/2 or more of the back surface is opened and closed by a lid plate (52). The cover plate (52) is supported at both lower ends and is biased in the opening direction by a spring (53).
Above the lid plate (52) of the head upper case (5), a latching knob (54) is slidably attached. The lock knob (54) can lock the lid plate (52) in the closed position at the lower position, and can release the lock at the upper position.

A circular concave step portion (12) is formed on the outer side of the distal end portion of both bracket arms (11) of the handle portion (1), and a circular convex step portion (13) corresponding to the concave step portion (12) is provided on the inner side. Is formed. The convex step portions (13) and (13) are rotatably fitted in circular concave step portions (24) at both ends of the lower case (21a) of the head portion (2).
Both bracket arms (11) and (11) can be elastically deformed outward, and the head portion (2) can be fitted between the bracket arms (11) and (11).

A circular hole (18) is opened at the center of the recessed step (12) of the bracket arm (11), and is opened at the center of the eccentric rotating shaft (16) and the recessed step (24) of the lower case (21a). The cylindrical shaft (7) is fitted over the formed hole (25).
The cylindrical shaft (7) has retaining pieces (71) and (72) at both ends, the outer end retaining piece (72) is formed in a flange shape, and the inner end retaining piece (71) is 180 °. It protrudes outward from the symmetrical position.
Align the phase of the retaining piece (72) (72) at the inner end of the cylinder shaft with the notch (25a) (25a) of the hole (25) in the lower case (21a) and insert the cylinder shaft (7), then rotate it. Thus, if the retaining pieces (72) (72) and the notches (25a) (25a) are out of phase, the cylindrical shaft (7) cannot be removed. That is, it is possible to reliably prevent the head portion (2) from coming out of the handle portion (1).

  Locking means (6) for locking the tilt angle of the head part (2) is provided across the bracket arm (11) and the head part (2). In FIG. 7, the locking means (6) is provided on both bracket arms (11) and (11), but it may be provided only on either side.

As shown in FIGS. 7, 11, and 12, the lock means (6) is formed by the engagement of the bracket arm (11), the mutual protrusions (66), and the engagement / disengagement means (60) with the recesses (67). It comprises a lock plate (65) that can lock the tilt angle of (2), and a lock release button (61).
The unlocking button (61) fits into the recessed step portion (12) of the bracket arm (11) and penetrates the shaft member (62) protruding from the center so as to be slidable through the cylindrical shaft (7). The head portion (2) is invaded into the small room (27).
The shaft member (62) is composed of two shaft pieces (63) (63) provided in parallel with an interval closely fitted to the cylindrical shaft (7), and each shaft piece (63) (63) An outward hooking claw (64) provided at the tip is hooked on the end surface of the cylinder shaft (7), thereby preventing the removal. Even if the hooking claw (64) exists, the elastic deformation of the shaft pieces (63) and (63) causes the space between the shaft pieces (63) and (63) to narrow, and the shaft member (62) is inserted into the cylindrical shaft (7). Is possible.
The effective length of the shaft member (62) is longer than the stroke required to disengage the engagement / disengagement means (60) from the cylindrical shaft (7).

The lock plate (65) of the embodiment includes a lock shaft (66a) which is a convex portion (66) of the engaging / disengaging means (60), and the bracket arm (11) is a concave portion (67) of the engaging / disengaging means (60). It has a certain lock hole (67a).
As shown in FIG. 7, the bracket arm (11) has two sets of three lock holes (67a) at 180 ° symmetrical positions in the concave step portion (12).
The interval between the set of three lock holes (67a) corresponds to the three tilt positions of the head portion (2).

As shown in FIG. 11, the lock plate (65) is accommodated in a small chamber (27) in the head portion (2), and the two lock shafts (66a) are connected to the end plate (23) of the head portion (2). ) Is slidably fitted in the two guide holes (26) established in (2).
The lock plate (65) is urged toward the lock release button (61) by the spring (68), and the lock plate (65) is always connected to the shaft member (62 of the lock release button (61). ) Is pushed outward.
When the head portion (2) is in an angle locked state, the lock shaft (66a) is fitted into a lock hole (67a) opened on the bracket arm (11) through the guide hole (26).
As shown in FIG. 12, when the lock release button (61) is pushed against the spring (68), the shaft member (62) on the lock release button (61) pushes the lock plate (65) inward, The tilt lock of the head portion (2) can be released by removing the lock shaft (66a) from the lock hole (67a) of the bracket arm (11). In this state, rotation (inclination) around the cylinder axis (7) of the head portion (2) is allowed.

The operation and effect of the present invention have been described, and duplication is avoided.
The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

It is a perspective view from the front side of an electric razor. The inclination position of a head part is shown, a figure is a shaving inclination position, b figure is an intermediate inclination position, and c figure is a sharp shaving inclination position. It is a perspective view of the head part back side of an electric razor. It is a disassembled perspective view of a head part. a figure is a top view of a head part, b figure is an upper part front view of a handle part. Figure a is a side view of the head part, and figure b is an upper side view of the handle part. It is a disassembled perspective view of a handle part side locking means. It is a lower part side exploded perspective view of a head part. It is a disassembled perspective view of a blade body unit. It is a disassembled perspective view of an outer blade cassette. It is sectional drawing of the locking means of a head part locked state. It is sectional drawing of the locking means of a head part lock release state. It is a perspective view from the lower part of a vibrator. It is sectional drawing which shows the relationship of a vibrator head part slot. It is sectional drawing of the vibrator vicinity. Fig. 3a is a hole pattern of a finished shaving outer blade, and Fig. b is an enlarged view of the hole pattern. Figure a is a hole pattern of a rough outer blade, and figure b is an enlarged view of the hole pattern. It is explanatory drawing of the use condition which shaves a chin. It is explanatory drawing of the use condition which shaves the side of a face. It is explanatory drawing which wash | cleans the inside of a head part.

Explanation of symbols

1 Handle part
11 Bracket arm 2 Head
21 Head body case 3 Blade unit
30 Outer blade cassette
32 Cutting edge
33 Razor outer blade
34 Finished shave outer blade 4 Vibrator 5 Head upper case
51 Cleaning window hole 6 Locking means
60 Disengagement means
61 Unlock button
66 Convex
66a Lock shaft
67 recess
67a Lock hole
68 Spring

Claims (10)

The head part (2) having the blade unit (3) is supported in a tiltable manner between the bracket arms (11) and (11) protruding on both sides of the handle part (1), and is locked by the locking means (6). An electric razor capable of locking the head (2) with a plurality of tilt positions,
The lock means (6) includes a shaft release member (61) that includes a shaft member (62) and that slidably penetrates the shaft member from the outside of the bracket arm (11).
The bracket arm (11), the convex portion (66) and the concave portion are arranged on the head portion (2) so as to be slidable on the central axis of rotation of the head portion and tiltable integrally with the head portion (2). The lock plate (65) capable of locking the tilt angle of the head portion (2) by the engagement of the engaging / disengaging means (60) by (67), and the engagement of the lock plate (65) and the bracket arm (11) cannot be disengaged. And a spring (68) that presses and biases the lock plate (65),
When the lock release button (61) is pushed inward, the shaft member (62) on the button (61) pushes the lock plate (65) inward against the spring (68) to lock the lock plate (65) and the bracket. An electric shaver in which the arm (11) is disengaged and the head (2) is allowed to tilt in this state.   The engagement / disengagement means (60) includes a lock shaft (66a) protruding from the lock plate (65) and a lock hole (67a) which is opened in the bracket arm (11) and into which the lock shaft (66a) can be fitted. The electric shaver according to claim 1.   The electric shaver according to claim 2, wherein the lock plate (65) is accommodated in an end portion in the head portion (2), and the lock shaft (66a) passes through the end plate (23) of the head portion (2). .   The shaft member (62) of the unlocking button (61) is slidably fitted to the cylindrical shaft (7) penetrating the bracket arm (11) and the end plate (23) of the head portion (2). The cylindrical shaft (7) has retaining pieces (71) and (72) at both ends, and a part of a hole (25) into which the cylindrical shaft (7) is fitted in the end plate (23) of the head portion (2). Has a notch (25a) through which the inner end projecting piece (72) of the cylindrical shaft (7) can pass, and the cylindrical shaft after the cylindrical shaft (7) has been passed through the head end plate (23). The electric shaver according to any one of claims 1 to 3, wherein when the phase of the projecting piece (72) is changed by rotating (7), the projecting piece (72) prevents the cylindrical shaft (7) from being removed.   The head part (2) has a shaving inclination position which is a basic inclination position in which the blade body unit (3) is substantially horizontally oriented while the handle part (1) is supported vertically, and the blade body unit (3) is substantially omitted. The electric shaver according to any one of claims 1 to 4, which can be locked at a plurality of tilt positions including a shave tilt position when facing upward.   The head portion (2) is inclined by approximately 80 ° in the shaving inclination position and approximately 20 ° in the shaving inclination position with respect to the extension line passing through the head portion (2) of the axis P1 of the handle portion (1). The electric razor according to claim 5.   The handle (1) is connected to the motor at the tip, and the eccentric rotation shaft (16) protrudes, and the head (2) tilts between the bracket arms (11) and (11) that protrude from both ends of the handle (1). The head part (2) is attached to the head body case (21), and the head part (2) is detachably attached to the head body case (21) whose bottom part on the handle part (1) side is curved in the tilting direction of the head part (2). The outer cutter cassette (30) and the eccentric rotating shaft (16) passing through the bottom plate (22) of the head body case (21) engage with the eccentric rotation shaft (16) to reciprocate in the direction perpendicular to the handle portion (1). And the inner blade that slides in contact with the outer blades (32) and (33) of the outer blade cassette (30) from the inside and attaches to the vibrator (4) to reciprocate integrally with the vibrator. (35) and (35), and the vibrator (4) has a guide plate (parallel to the reciprocating direction of the vibrator (4) in parallel with the eccentric rotation shaft (16) sandwiched between them. 43) (43), the guide plate (43) The head body has a circular arc edge (43a) along the curvature of the bottom of the head body, and both guide plates (43) and (43) are provided with projecting pieces (44) projecting outward along the circular arc edge (43a). The bottom plate (22) of the head portion (2) is provided with a groove (28) having a width that avoids interference with the eccentric rotation shaft (16), and the closing piece (44) is the vibrator (4). The electric shaver according to any one of claims 1 to 6, which closes the groove hole (28) even if it vibrates in the width direction of the groove hole (28).   With the handle part (1) in the vertical direction and the head part (2) at the upper end of the handle part (1) in the horizontal direction, the blade unit (3) has an outer shave blade (32) and a razor The blade (33) and the finish shaving outer blade (34) are arranged, and the outer surfaces of the outer blades (32), (33) and (34) are substantially flush with the same plane F, and the axis P1 of the plane F and the handle portion (1) The electric razor according to any one of claims 1 to 7, wherein the angle formed by the shave is 10 to 20 °, and the finishing shave outer blade (34) is located farthest from the axis P1.   On the front face of the head body case (21) facing the shaving and tilting position, the push knob (55) for pushing the outer shaving blade (32) to the shaving position, the cleaning window hole (51) on the rear face and the cleaning The electric razor according to claim 7 or 8, wherein a cover plate (52) for closing the window hole (51) is attached.   The handle portion (1) is formed in a shaft shape, the head portion (2) side is enlarged in a substantially T-shape, bracket arms (11) (11) are provided at both ends of the enlarged portion, and the bracket arm (11) The electric razor according to any one of claims 1 to 9, wherein a head portion (2) is attached between (11).

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