JP2000288267A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fitness of a long hair cutting edge with the skin at the time of shaving by using a main cutting edge and the long hair cutting edge. SOLUTION: In the electric razor, a long hair cutting unit 5 with a long hair cutting edge 41 provided on its upper end is mounted on the upper side surface of a main body case 1 having a main cutting edge 4 on its upper part so as to be vertically movable between a housing position in which the long hair cutting edge 41 is positioned lower than the main cutting edge 4 of the main body case 1 and a position for using a combination shaving protruding to a height where the long hair cutting edge 41 comes near to the side part of the main cutting edge 4. The long hair cutting unit 5 is elastically supported so as to vertically float by a prescribed stroke in the position for using the combination shaving. A whisker combing part T1 is mounted on the side part of the long hait cutting edge 41.

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 long hair cutting unit provided with a long hair cutting blade is mounted on an upper side surface of a main body case having a main blade at an upper portion so as to be movable in a vertical direction.

[0002]

2. Description of the Related Art As this type of electric razor, for example, one disclosed in Japanese Patent Application Laid-Open No. 55-60481 is known. In this electric razor, the trimmer is moved between a storage position in which the trimmer is spaced below the main blade and a use position in which the trimmer slides upward to be close to the main blade and enable the combination shaving with the main blade. It is provided to be able to slide up and down. In the use position for combination shaving, long hair and curly hair are shaved by the main blade while being cut by the trimmer.

[0003]

However, the conventional electric shaver has a structure in which the trimmer at the position where the combination shaver is used is positioned and held immovably at that position, so that the user cannot use the shaver more than necessary. When pressed strongly against the skin, it gives a feeling of pain to the skin with the trimmer blade. Further, the trimmer mechanism itself may be damaged by a strong pressing force.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem. An object of the present invention is to provide a long hair cutting blade that gives a feeling of pain to the skin when using a combination shaving using a long hair cutting blade and a main blade. An object of the present invention is to provide an electric shaver which can be alleviated and can prevent breakage of the long hair cutting unit.

[0005]

An electric shaver according to the present invention is provided on an upper side surface of a main body case 1 having a main blade 4 at an upper part thereof.
Long hair cutting unit 5 provided with long hair cutting blade 41 at the upper end
Between the storage position where the long hair cutting blade 41 is located below the main blade 4 of the main body case 1 and the use position of the combination shaving where the long hair cutting blade 41 protrudes to a height approaching the side of the main blade 4. Attached so that it can slide vertically between them. In such an electric shaver, in the invention according to claim 1, the long hair cutting unit 5 is elastically supported so as to float up and down by a predetermined stroke at the use position of the combination shaving. In addition, a whisker T1 is attached to the side of the long hair cutting blade 41.

The invention according to claim 2 is characterized in that the shaving portion T1 and the second shaving portion T2 are mounted at positions where the long hair cutting blade 41 is sandwiched.

[0007]

According to the first aspect of the present invention, even when the electric shaver is pressed against the skin with a strong pressing force when the combination shaving is used, the long hair cutting unit 41 floats appropriately so that the long hair cutting blade 41 can be used. It can alleviate that the cutting edge gives a pain to the skin. At this time, the bearded portion T1 combs and guides long hairs and curly hairs to the cutting edge of the long hair cutting blade 41, so that an effective cutting operation can be performed. Moreover, since the shaving portion T1 is attached to the side of the long hair cutting blade 41, the cutting edge of the long hair cutting blade 41 can be guarded by the shaving portion T1. Moreover, the fear of the edge of the long hair cutting blade 41 can be reduced.

According to the second aspect of the present invention, even when shaving is performed by reciprocating forward and backward, long and curly hairs can always be guided to the cutting edge of the long hair cutting blade 41 by aligning them. Cutting work can be performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 4, an electric razor according to the present invention comprises a main blade 4 having a rotary inner blade 2 and a mesh-shaped outer blade 3 on an upper part of a main body case 1. As shown in FIG. And a long hair cutting unit 5 slidable up and down on the upper rear surface of the main body case 1. The outer cutter 3 is held by an outer cutter case 6 detachable from the main body case 1. A switch button 7 for turning on and off the power, which is slid up and down, is provided on the surface of the main body case 1, and a charging plug 8 is provided at a lower end of the main body case 1. The main body case 1 is integrally screwed together with a front case 1a and a rear case 1b made of plastic, and is connected to the upper part inside the main body case 1. An inner blade unit 12 equipped with a gear transmission mechanism 11 for transmitting the power to the motor is mounted to be vertically displaceable.

[0010] To explain this point in detail, as shown in FIG. 5, the inner blade unit 12 is provided with a motor mount 13 on the lower surface of which the motor 10 is screwed and supported in a vertical position. The inner blade 2 is horizontally supported on the upper part of a pair of bearing chassis 14 which are screwed upright on the left and right upper surfaces of the inner blade 2. An intermediate rotating shaft 15 horizontally supported at an upper and lower intermediate portion of the bearing chassis 14 and a motor output shaft 10a are interlocked via an output gear 16 and a face gear 17, and the intermediate rotating shaft 15 and the inner blade 2 are connected to one another. And the gear transmission mechanism 11 disposed outside of the bearing chassis 14.

As shown in FIGS. 8 and 9, a pair of left and right projections 18a and 18b projecting from the front and rear surfaces of the motor mount 13 are provided on the front case 1a and the rear case 1 respectively.
The inner cutter unit 12 is engaged with the upper and lower guide grooves 19a and 19b formed on the inner surface of the motor mounting base 13 so that the entire inner blade unit 12 can be guided up and down so as to be able to move in parallel by a predetermined stroke. The entire inner cutter unit 12 is pushed upward and urged by the spring 20, so that the inner cutter 2 is pressed and slidably contacted with the inner surface of the outer cutter 3. In addition, as shown in FIG. 5, a rubber seal 21 is fitted to a protruding portion of the inner blade unit at the upper end of the main body case 1 so as to prevent infiltration into the main body case 1. A vibrator 22 for driving a shaving blade is provided on the upper surface of the motor mount 13 so as to be swingable about a fulcrum shaft 23, and the vibrator 22 is engaged with an eccentric cam 24 provided on the motor output shaft 10a. When the motor is driven, the inner blade 2 is driven to rotate in a fixed direction, and the vibrator 22 is driven to swing back and forth with a fixed stroke.

As shown in FIGS. 4 and 5, two main printed circuit boards 25a and 25b on which a motor drive circuit and a charging circuit are formed are accommodated in a main body case 1, and both printed circuit boards 25a and 25b are housed. Two rechargeable batteries 26 are held in a slightly inclined posture between 25b.
The upper and lower side surfaces of the upper part of the main body case 1 are provided with engaging pieces 27 which are biased outward and are biased by springs. The engaging state of the outer blade case 6 is maintained by engaging with the left and right inner surfaces, and the detaching button 28 mounted on the left and right sides of the outer blade case 6 is pushed in to displace the engaging piece 27 inward. Thus, the engagement with the outer blade case 6 is released and the outer blade case 6 can be removed from the main body case 1.

The motor on / off switch button 7 provided on the surface of the main body case 1 is engaged and locked in the case at the lower off position and cannot be operated upward. Is prevented from being operated to the motor-on position. As shown in FIG. 3, the switch button 7 is provided with a lock release button 29, and when the lock release button 29 is pushed in to release the engagement in the case, the switch button 7 is released.
13 can be slid to the upper ON position, and as shown in FIG. 13, the upper part of the main body case 1 is pushed in by being brought into contact with the inner surface of the outer blade case 6 mounted thereon. A safety switch 30 is provided so as to be able to swing out and retreat and to protrude. An operating piece 30a extends downward from the safety switch 30, and when the safety switch 30 protrudes and swings, the operating piece 30a swings inward and is connected to the switch button 7 so that the inside of the case is closed. It interferes with the upper end of the switch plate 7a that moves up and down, and when the safety switch 30 retreats and swings, the operating piece 30a swings outward and comes off from the upper end of the switch plate 7a. The switch button 7 can be slid to the ON position only when the case 6 is correctly mounted and the safety switch 30 is pushed, and the motor is started when the outer blade case 6 is removed and the inner blade 2 is exposed. Cannot operate.

As shown in FIGS. 2 and 14, the outer blade 3 made of a thin metal plate has its front and rear ends caulked and connected to the front and rear sides of a hollow rectangular frame-shaped outer blade holder 31, and has a predetermined bending. The outer blade holder 31 is held in the shape, and the outer blade holder 31 is detachably attached to the outer blade case 6 from inside. A hair introduction hole 32 in which short holes are arranged in a mesh pattern is formed in the outer cutter 3 over an inner blade sliding contact area A, and the hair introduction hole 32 is located on the upper side in the rotation direction of the inner cutter. A large number of long holes 33 are formed side by side along the circumferential direction at the locations where the holes 33 are formed. The end of the long hole 33 on the lower side in the inner blade rotation direction slightly overlaps the end of the inner blade sliding contact area A on the upper side in the inner blade rotation direction.

As shown in FIGS. 6, 13 and 17,
The long hair cutting unit 5 includes a shaving blade support base 42 having a long hair cutting blade 41 for cutting long hair at an upper end, an operation case 43 fitted and mounted on the shaving blade support table 42 from outside, and a shaving blade support table 42. Inner cover 4 fitted from inside
4, and a plate-shaped guard body 45 mounted between the shaving blade support base 42 and the operation case 43. The long hair cutting blade 41 includes a fixed blade 41a.
The fixed blade 41a is fixed to the lower surface of the upper cover 46 which is engaged with and connected to the upper end of the shaving blade support base 42. 41b is guided and supported so as to be able to move left and right, and is urged against the lower surface of the fixed blade 41a by a push-up spring 40a formed integrally with the shaving support plate 40 fixed to the upper cover 46. An engagement piece 49 protrudes from a lower surface of the movable blade 41b, and is engaged with an upper end of a driver 51 pivotally connected to an inner surface of the shaving blade support base 42 via a fulcrum shaft 50. The drive pins 51a provided at the lower end of the driver 51
It penetrates through the opening 52 of the rear case 1 b and protrudes into the main body case 1, is engaged with the vertical groove engaging portion 22 a connected to the vibrator 22, and the driver 51 is kept constant with the vibration of the vibrator 22. The movable blade 41b is reciprocated at a constant stroke. As shown in FIG. 6, a comb portion 46a is formed on the upper surface of the upper cover 46.

10 to 12, two upper and lower engaging claws 53 are provided from the left and right sides of the inner surface of the long hair cutting unit 5, respectively.
, And each engaging claw 53 is engaged with a guide groove 54 formed in the rear case 1b, and the long hair cutting unit 5 is engaged and supported so as to be vertically slidable within the range of the guide groove 54 with respect to the main body case 1. Have been. As shown in FIG. 18, the upper end of the positioning piece 55 having a pair of left and right elastically resiliently deformable elastic engaging arms 55a on the inner surface of the shaving blade support base 42. It is fixed by inserting and fitting into pins 56 (three pins in the illustrated example) projecting from the inner surface of the shaving blade support base 42. On the other hand, a pair of left and right guide projections 57 are formed on the rear case 1b,
Protrusions 57a, 57b, and 57c are provided in three stages, upper, middle, and lower, on the surface facing the left and right guide protrusions 57, 57, and each of the protrusions 57a, 57b, 57c has the elastic engagement arm 55a,
The shaving unit 5 is positioned and held at three locations in the vertical direction by stepwise elastically engaging the outwardly projecting portions 55b at the end of the 55a. An inclined guide surface 57d is formed between the left and right middle projections 57b and the upper projection 57a so as to gradually decrease the left-right opposing gap as going downward. Elastic engagement arm 55a / 5
By interposing a spring 58 of a compression coil spring between 5a, the elastic engagement force of the elastic engagement arm 55a with the guide projection 57 is strengthened, and the elastic engagement arm 55a is prevented from creeping. The concave portion 59 formed on the lower side of the operation case 43 and the convex portion 60 formed on the rear case 1b are engaged with each other, so that the left and right positioning when the long hair cutting unit 5 is slid up and down is reliably performed.

As shown in FIGS. 12 and 13, the guard body 45 is vertically slidable within a certain range between the shaving blade support base 42 and the operation case 43, and a pair of left and right springs 61. It is biased upward. The upper cover 46 located above the guard body 45 at the upper limit position covers and protects the upper part of the long hair cutting blade 41 in a state where only the cutting edge thereof is exposed, and at the upper end of the guard body 45. Are formed with comb teeth 62. A pair of left and right pins 6 projecting from the inner surface of the guard body 45
3 protrudes through the upper and lower slots 64 of the inner cover 44,
It is engaged with a pair of left and right long holes 65 formed in the rear case 1b.

The electric razor of the present invention is configured as described above, and is used for "shaving" using only the main blade 4, "combination shaving" using the long hair cutting blade 41 and the main blade 4, And "shaving" using the long hair cutting blade 41 can be selected and performed, and each usage pattern will be described below.

[Shaving] During normal shaving, as shown in FIG. 13, the long hair cutting unit 5 is lowered to the lowest storage position. In this storage position, the outward projection 55b at the tip of the elastic engagement arm 55a of the positioning piece 55 is engaged with the lower side of the lower projection 57c of the guide projection 57 as shown in FIG. In this state, the driving pin 51a of the driving element 51 protruding from the long hair cutting unit 5 is disengaged downward from the longitudinal groove engaging portion 22a of the vibrator 22, and only the inner blade 2 is driven by the activation of the motor 10. That is, shaving using only the main blade 4 can be performed. At this time, the upper end of the long hair cutting unit 5 is located far below the main blade 4 so that the upper end of the long hair cutting unit 5 does not interfere with shaving. When the long hair cutting unit 5 is lowered to the lowermost storage position, the pin 63 of the guard body 45 is located below the upper and lower long holes 65 of the rear case 1b as shown in FIG. Since the 45 comb teeth 62 cannot move in a state of being close to the cutting edge of the long-hair cutting blade 41, the cutting edge of the long-hair cutting blade 41 can be guarded during carrying or the like.

[Combination Shaving] For shaving under the chin, "combination shaving" is performed. In this "combination shaving", as shown in FIG. 14, the long hair cutting unit 5 is pushed up to the combination shaving position one step above the storage position. In this state, the drive pin 51a protruding from the shaving unit 5 engages with the longitudinal groove engaging portion 22a of the vibrator 22, and the inner blade 2 and the movable blade 41b of the shaving blade 41 are driven together by the activation of the motor 10. Will be done. In this case, when the long hair cutting unit 5 is in the storage position,
Since 3 is located below the upper and lower long holes 65 in the rear case 1b, when the long hair cutting unit 5 moves from the storage position to the combination shaving position, the guard body 45 moves upward integrally with the long hair cutting unit 5.

In this combination shaving position, as shown in FIG. 18, the long hair cutting unit 5 has an outwardly projecting portion 55b at the distal end of the elastic engagement arm 55a of the positioning piece 55.
Are elastically in contact with the inclined guide surface 57d between the middle projection 57b and the upper projection 57a of the guide projection 57, and the left and right inclined guide surfaces 57d and 57d are inclined so as to gradually narrow the opposing interval as going downward. As a result, the entire long hair cutting unit 5 is constantly urged upward by the elastic contact action. At the position where the long hair cutting unit 5 engages the outward projection 55b at the tip of the elastic engagement arm 55a below the upper projection 57a, an extension of a tangent passing through the vertex of the main blade 4 as shown in FIG. The upper hair P and the top 5a of the long hair cutting unit 5 are set so as to be substantially flush with each other. Therefore, between this position and the middle step 57b, the long hair cutting unit 5 is within a predetermined stroke S (for example, 3 mm). So it floats up and down.

In this state, the main body case 1 is moved toward the long hair cutting unit 5 while the main blade 4 and the upper end of the long hair cutting unit 5 are both in contact with the skin. The provided comb teeth 62 comb the long hairs and curly hairs and guide them to the long hair cutting blade 41. Next, the long hairs and curly hairs roughly cut by the long hair cutting blade 41 are introduced into the long holes 33 of the outer blade 3 in the main blade 4. And cut with the inner blade 2,
Thereafter, the hair is introduced into the mesh-like hair introduction hole 32 and is shaved by the inner blade 2. The comb teeth 62 provided at the upper end of the guard body 45 function as a first combing part T1. Therefore, three-stage cutting of cutting by the long hair cutting blade 41, cutting by the inner blade 2 through the long hole 33 of the outer blade 3, and cutting by the inner blade 2 through the hair introducing hole 32 are continuously performed. Long hairs and curly hairs under the chin are cut off well. When shaving the combination, the upper cover 46
Has a function of combing and trimming long or curly hair to some extent. In other words, the comb portion 46a of the upper cover 46 functions as the second shaving portion T2 of the long hair cutting blade 41 when the shaving is performed by repeatedly moving back and forth. That is,
As shown in FIG. 14, the long hair cutting blade 41 and the whisker T
1. Regarding the positional relationship of the bearded portion T2, the long hair cutting blade 41 is located between the bearded portion T1 and the bearded portion T2. Further, as shown in FIG. 14, the cutting edge of the long hair cutting blade 41 is
It is located substantially on the straight line Q connecting the whisker part T1 and the whisker part T2, and in combination with the float operation of the long hair cutting unit 5, a good cut is made while preventing as much as possible damage to the skin. Work can be done.

In the "combination shaving" state, as described above, the outward projection 55b at the tip of the elastic engagement arm 55a of the positioning piece 55 is inclined between the middle projection 57b and the upper projection 57a of the guide projection 57. The entire long hair cutting unit 5 is constantly pushed upward by the elastic contact with the guide surface 57d. Accordingly, as the long hair cutting unit 5 is pressed downward by the contact pressure with the skin, the long hair cutting unit 5 moves the stroke S from the position where the top 5a is flush with the tangent extension line P passing through the vertex of the main blade 4. Within the range described above, it is possible to obtain a state in which the skin fits well. The spring property of the long hair cutting unit 5 at the time of floating can be adjusted by variously selecting the spring force of the spring 58 between the elastic engagement arms 55a.

In the "combination shaving" position, when a pressing force is applied to the long hair cutting unit 5 further below the floating area (the lower end position of the stroke S), the elastic engagement arm 55a is moved to the position shown in FIG. By sliding along the lower taper 57e from the top of the middle projection 57b as indicated by the symbol F, the entire long hair cutting unit 5 moves down, is released from the combination shaving position, and shifts to the storage position. Therefore, damage to the long hair cutting unit 5 can be protected before it occurs. In this case,
As shown in FIG. 16 (b), the pin 63 of the guard body 45 can move downward in the upper and lower slots 65 of the rear case 1b against the spring 61, so that the cutting edge of the shaving blade 41 and the comb of the guard body 45 can be moved. Even if a large amount of hair such as hair is caught between the teeth 62,
The guard body 45 can be moved down so that it is not caught and the hair is easily removed.

[Sharpening] When performing sharpening of sideburns, as shown in FIG. 15, the long hair cutting unit 5 is pushed up from the combination shaving position to the further sharpening position one step higher. Then, the outward projection 5 at the tip of the elastic engagement arm 55a of the positioning piece 55 shown in FIG.
5b engages above the upper projection 57a of the guide projection 57. In this state, the drive pin 51a protruding from the long hair cutting unit 5 is engaged and maintained above the vertical groove engaging portion 22a of the vibrator 22, and the long hair cutting blade 41 is driven by the activation of the motor 10. .

In this case, as shown in FIG. 16 (b), the pin 63 of the guard body 45 at the position of the combination shaving has reached near the upper end of the elongated hole 65 in the rear case 1b. When the long hair cutting unit 5 is further moved upward from the combination shaving position to the one-step shaving position, the long hair cutting unit 5 is moved upward as shown in FIG. The guard body 45, which has been prevented from moving upward by the contact between the upper end of the pin and the pin 63, is left at that position,
It moves relatively downward with respect to the long hair cutting unit 5 while resisting the spring 61. That is, while the long hair cutting blade 41 is largely separated from the main blade 4 upward, the guard body 45
Of the comb tooth 62 is separated downward from the cutting edge of the long hair cutting blade 41,
A sharp shaving using the long hair cutting blade 41 can be easily performed without being obstructed by the main blade 4 and the guard body 45.
Although the above embodiment describes a rotary electric shaver, it goes without saying that the present invention can be similarly applied to a reciprocating electric shaver and the like.

[0027]

According to the first aspect of the present invention, the long hair cutting unit 5 floats appropriately even when the combination shaving is used and the skin is pressed against the skin with a strong pressing force. A combination shave that does not give a pain to the skin can be realized. At this time, the bearded portion T1 combs and guides long hairs and curly hairs to the cutting edge of the long hair cutting blade 41, so that an effective cutting operation can be performed. Moreover, since the shaving portion T1 is attached to the side of the long hair cutting blade 41, the cutting edge of the long hair cutting blade 41 can be guarded by the shaving portion T1. Moreover, the fear of the edge of the long hair cutting blade 41 can be reduced.

According to the second aspect of the present invention, even when shaving is performed by reciprocating forward and backward, long and curly hairs can always be guided to the cutting edge of the long hair cutting blade 41 in a uniform manner. Cutting work can be performed.

[Brief description of the drawings]

FIG. 1 is an overall front view of an electric razor.

FIG. 2 is an overall rear view of the electric shaver.

FIG. 3 is an overall side view of the electric shaver.

FIG. 4 is an overall vertical side view.

FIG. 5 is a vertical sectional front view of the upper part of the electric shaver.

FIG. 6 is an overall perspective view of the electric shaver as viewed from behind.

FIG. 7 is an overall perspective view in a state where a long hair cutting unit is removed.

FIG. 8 is a perspective view of a motor mount.

FIG. 9 is a plan view of the motor mount in the case.

FIG. 10 is an inner view of the long hair cutting unit.

FIG. 11 is a perspective view of the long hair cutting unit as viewed from inside.

FIG. 12 is a rear view of the upper part of the main body case.

FIG. 13 is a longitudinal sectional side view of a main part when the long hair cutting unit is at a storage position.

FIG. 14 is a longitudinal sectional side view of a main part when the long hair cutting unit is at a combination shaving position.

FIG. 15 is a vertical sectional side view of a main part when the long hair cutting unit is at a sharp shaving position.

FIG. 16 is an explanatory diagram showing the position of the guard body with respect to each position of the long hair cutting unit.

FIG. 17 shows a shave blade support base, an operation case, an inner cover,
It is an exploded perspective view of a guard body.

FIG. 18 is a front view showing the relationship between a positioning piece on the long hair cutting unit side and a guide projection on the main body case side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 4 Main blade 5 Long hair cutting unit 41 Long hair cutting blade T1 Crossed part T2 Second crossed part

Claims (2)

[Claims] 1. A long-hair cutting unit 5 having a long-hair cutting blade 41 at an upper end on a top side surface of a main body case 1 having a main blade 4 at an upper part, wherein the long-hair cutting blade 41 is located below the main blade 4 of the main body case 1. And the long hair cutting blade 41
A shaver protruding to a height approaching the side of the main blade 4, the long shaving unit 5 is mounted on the shaver so as to be movable up and down between the shaver and the use position.
An electric razor, which is elastically supported so that it floats up and down by a predetermined stroke at a combination shaving use position, and has a shaving portion T1 attached to a side of the long hair cutting blade 41. 2. The electric shaver according to claim 1, wherein said shaving portion (T1) and said second shaving portion (T2) are mounted at positions sandwiching said long hair cutting blade (41).