JP2003062365A - Hair cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair cutter in which a movable blade is smoothly moved back and forth without being rickety and strengths of the movable blade and a fixed blade are ensured and hair flocks hardly enter into a guide mechanism. SOLUTION: In the hair cutter provided with a blade base stand 1, the fixed blade 2 set and fixed on the blade base stand 1, the movable blade 3 being freely slidably moved back and forth above the fixed blade 2 and an elastic member 4 pressing the movable blade 3 to the fixed blade 2 and cutting hairs between both comb teeth-like cutting edge parts 2a and 3a formed on the front end parts of the fixed blade 2 and the movable blade 3, the guide mechanism 7 formed by a projected part 5 and a recessed part 6 mutually freely slidably fitted and guiding the back and forth movement of the movable blade 3 is arranged on the outsides of the movable blade 3 and the fixed blade 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cutter capable of cutting hair such as hair or beard between a fixed blade and a movable blade slidably reciprocally moved on the fixed blade.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 24 and 25, a blade base 1 and a fixed blade 2 installed and fixed on the blade base 1.
A movable blade 3 slidably reciprocated on the fixed blade 2,
Elastic member 4 for pressing the movable blade 3 against the fixed blade 2.
There is known a hair cutter that is provided with, and that cuts hair between the comb tooth-shaped blade tips 2a and 3a formed at the front end portions of the fixed blade 2 and the movable blade 3. This kind of hair cutter
For example, it is disclosed in Japanese Utility Model Laid-Open No. 59-184775.

In this type of hair cutter, the elastic member 4
The wound portion of the spring wire is fixed to the blade base 1 side, the movable blade 3 is fixedly coupled to the tips of both arm portions of the spring wire, and both arm portions of the spring wire are eccentrically rotated on the driver. Alternatively, the movable blade 3 is reciprocated substantially linearly on the fixed blade 2 by swinging at a constant angle in conjunction with the reciprocating vibration. Then, the comb-teeth-shaped blade tip portion 3a of the movable blade 3 which is reciprocated
It is possible to cut hair such as hair or beard between the blade and the comb tooth-shaped blade tip portion 2a of the fixed blade 2 which is installed and fixed on the blade base 1.

However, in this case, the crossness at the time of cutting (the length of the hair after cutting), the parallelism of the comb tooth-shaped blade tips 2a, 3a, or the blade step between the fixed blade 2 and the movable blade 3 is adjusted. Therefore, it is necessary to precisely control the length dimension L of the arm portion of the spring wire member that is the elastic member 4, and there is a problem in terms of manufacturing control. Even if the length L of the arm portion of the spring wire is precisely controlled, there is no mechanism for guiding the reciprocating motion of the movable blade 3, and the movable blade 3 is held by the elastic wire 4 which is the elastic member 4. Since the movable blade 3 is simply reciprocated, it is difficult for the movable blade 3 to be accurately reciprocated linearly and stable cutting performance cannot be obtained.

A hair cutter having a guide mechanism 7 for guiding the reciprocating motion of the movable blade 3 as shown in FIG. 26 is also known. In this case, the guide mechanism 7 is composed of the convex portion 5 and the concave portion 6 which are slidably fitted to each other, and the movable blade 3
It guides the reciprocating motion of the. This type of hair cutter is disclosed, for example, in Japanese Utility Model Publication No. 51-46592. In this case, the movable blade 3 is guided by the guide mechanism 7.
The above-mentioned problem is tentatively solved by being guided linearly and accurately reciprocating linearly.

However, in this case, the guide body 8 is fixedly coupled to the movable blade 3, the one convex portion 5 serving as the guide mechanism 7 is formed on the guide body 8, and the fixed blade 2 serves as the guide mechanism 7. The other concave portion 6 is formed in a long hole shape. That is, in this case, since the guide mechanism 7 is located inside the fixed blade 2, the reciprocating range of the movable blade 3 guided by the guide mechanism 7 is limited, and the guide mechanism 7 causes hair scraps. The fixed blade 2 has a problem in that the rigidity and strength of the fixed blade 2 are lowered due to the long recess 6 formed therein.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems in the prior art. The problem is that the movable blade is smoothly reciprocated by a guide mechanism. The guide mechanism is provided regardless of the size of the fixed blade, and by lengthening the guide mechanism, the load pressure here and rattling of the movable blade are reduced,
It is an object of the present invention to provide a hair cutter in which rigidity of the movable blade and the fixed blade is secured, hair dust and the like are less likely to enter the guide mechanism, and a smooth reciprocating motion of the movable blade is secured.

[0008]

A hair cutter according to a first aspect of the present invention comprises a blade base, a fixed blade installed and fixed on the blade base, and slidable on the fixed blade. A movable blade that is reciprocated and an elastic member that presses the movable blade against the fixed blade are provided, and hair is formed between the comb tooth-shaped blade tips formed at the front end portions of the fixed blade and the movable blade. A hair cutter for cutting, which has a convex portion and a concave portion that are slidably fitted to each other, and is provided with a guide mechanism for guiding the reciprocating motion of the movable blade, which is disposed outside the movable blade and the fixed blade. Become.

Therefore, in this case, the reciprocating operation of the movable blade is guided by the fitting and sliding of the convex portion and the concave portion which serve as the guide mechanism, and the movable blade smoothly reciprocates. Moreover, since the convex portion and the concave portion which are the guide mechanism are arranged outside the movable blade and the fixed blade, the guide mechanism can be lengthened regardless of the size of the movable blade and the fixed blade. As a result, the sliding contact surface pressure of the guide mechanism is reduced, and rattling of the movable blade that is reciprocated is also reduced.

Further, since the movable blade and the fixed blade are not bored for the guide mechanism, the rigidity of the movable blade and the fixed blade is secured. Furthermore, since the guide mechanism is located outside the sliding contact portion between the movable blade and the fixed blade, it is difficult for dust and the like to enter the guide mechanism, and the smooth reciprocating operation of the movable blade is ensured.

A hair cutter according to a second aspect of the present invention is the hair cutter according to the first aspect,
It is characterized in that the guide mechanism is arranged behind the fixed blade within the width dimension of the fixed blade.

Therefore, especially in this case, since the guide mechanism is located on the rear side of the fixed blade, invasion of hair scraps and the like into the guide mechanism is reliably prevented, and thereby the guide mechanism is prevented from being deteriorated. As a result, stable cutting ability is maintained for a long time. Moreover, since the guide mechanism is stored within the width of the fixed blade, when using both ends of the comb-teeth-shaped blade tip for shaving etc., both sides of the blade base etc. for installing and fixing the fixed blade are obstructive. Therefore, it is possible to perform cutting work such as simultaneous shaving without any trouble.

A hair cutter according to a third aspect of the present invention is the hair cutter according to the second aspect,
A guide body that is fixedly coupled to the movable blade is provided at the rear portion of the movable blade, and a convex portion and a concave portion that serve as a guide mechanism are provided on the rear end portion of the guide body and on the blade base.

Therefore, particularly in this case, since the convex portion and the concave portion which serve as the guide mechanism are provided on the rear end portion of the guide body provided on the rear portion of the movable blade and on the blade base, the convex portion and the concave portion are provided. Can be easily formed of synthetic resin integrally with the guide body and blade base, which allows the guide mechanism to slide smoothly, eliminating the need for a guide mechanism on the movable blade itself. The rigidity strength of the movable blade is further improved.

A hair cutter according to a fourth aspect of the present invention is the hair cutter according to the third aspect, wherein:
It is characterized in that a convex piece-shaped convex portion bent downward is formed on the rear end edge of the guide body, and a concave groove-shaped concave portion is formed on the upper surface of the blade base.

Therefore, in this case, in particular, a convex piece-shaped convex portion bent downward is easily integrally formed on the rear end edge of the guide body, and a concave groove-shaped concave portion is easily integrated on the upper surface of the blade base. The guide body and the blade base are formed of synthetic resin together with the guide mechanism more easily.

The hair cutter according to the invention of claim 5 is the hair cutter according to claim 4, wherein:
It is characterized in that the thickness dimension of the convex portion is formed to be smaller toward the front side and the groove width dimension of the concave portion is formed to be smaller toward the bottom side so that the slide sliding contact surfaces of both are inclined.

Therefore, particularly in this case, since the slide sliding contact surfaces of the convex portion and the concave portion which serve as the guide mechanism are inclined in a wedge shape, even if the sliding sliding contact surface is worn, the convex portion presses the elastic member. As a result, they enter the recesses and always make stable sliding contact with each other without rattling, the cutting ability is secured, and the life is extended.

A hair cutter according to a sixth aspect of the present invention, in the hair cutter according to any one of the third to fifth aspects, guides an interlocking engagement portion with a driver for reciprocating a movable blade. It is characterized in that it is provided on the body and the interlocking engagement portion is located directly above the guide mechanism.

Therefore, particularly in this case, since the interlocking engagement portion with the driver for reciprocating the movable blade is provided on the guide body and is located right above the guide mechanism, the prying ( Moment) becomes smaller, the operation loss is reduced, the load current of the motor serving as the drive source of the driver is also suppressed, and the cutting ability is improved and the drive source is downsized.

The hair cutter according to the invention of claim 7 is the hair cutter according to claim 1, wherein:
It is characterized in that the movable blade is rotated up and down around the portion of the guide mechanism to open and close between the comb-teeth-shaped blade tips of the movable blade and the fixed blade.

Therefore, particularly in this case, by rotating the movable blade up and down about the portion of the guide mechanism,
The movable blade and the fixed blade can be easily opened and closed between the comb tooth-shaped blade tip portions, whereby cleaning work of the both comb tooth-shaped blade tip portions and maintenance work inside thereof can be easily performed. Like

[0023]

1 to 6 show an embodiment of the present invention, in which a hair cutter according to the present invention is installed and fixed on a blade base 1 and on the blade base 1. Fixed blade 2,
A movable blade 3 slidably reciprocated on the fixed blade 2,
Elastic member 4 for pressing the movable blade 3 against the fixed blade 2.
And are equipped with. Then, in the hair cutter, the hair is cut between the comb tooth-shaped blade tips 2a and 3a formed at the front end portions of the fixed blade 2 and the movable blade 3. In this case, a guide mechanism 7 including a convex portion 5 and a concave portion 6 which are slidably fitted to each other, and which guides the reciprocating motion of the movable blade 3 is provided by the movable blade 3 and the fixed blade. It is arranged on the outside of 2.

Further, in the hair cutter, the guide mechanism 7 is disposed behind the fixed blade 2 within the width W of the fixed blade 2. Further, a guide body 8 coupled and fixed to the movable blade 3 is provided at the rear portion of the movable blade 3, and a convex portion 5 and a concave portion 6 which serve as a guide mechanism 7 are provided on the rear end portion of the movable blade 3 and on the blade base 1. Is also provided. In this case, a convex piece-shaped convex portion 5 bent downward is formed on the rear end edge of the guide body 8, and a concave groove-shaped concave portion 6 is formed on the upper surface of the blade base 1.

The blade base 1 is integrally formed of synthetic resin, and the fixed blade 2 is installed and fixed on the blade base 1. At that time, as shown in FIGS. 3 and 4, a plurality of protrusions 11 projecting from the upper surface of the blade base 1 are provided with a plurality of positioning holes 12 formed in the fixed blade 2.
, And the fixed blade 2 is installed and fixed at a predetermined position on the blade base 1. Further, a guide body 8 integrally formed of synthetic resin is joined and fixed on the movable blade 3,
At that time, the movable blade 3 is coupled and fixed to an accurate position through a plurality of engaging holes 13 formed in the movable blade 3. The movable blade 3 is slidably installed on the fixed blade 2, and the guide mechanism 7 is formed between the guide body 8 and the blade base 1.

In this case, a pair of front and rear projections 61 are provided on the upper surface of the blade base 1 to form a groove-shaped recess 6 between the projections 61, and the recess 6 is the same as the blade base. It is arranged on both sides of 1.
On the rear end edge of the guide body 8, a convex piece-shaped convex portion 5 bent downward is formed, and the convex portion 5 is arranged on both sides of the rear end edge. Then, when the movable blade 3 is installed on the fixed blade 2, the convex portion 5 of the guide body 8 is fitted into the concave portion 6 of the blade base 1 so as to be slidable in the lateral direction, and the guide mechanism 7 is the same. It is formed by the convex portion 5 and the concave portion 6. In the guide mechanism 7, the convex portion 5 and the concave portion 6 are made of synthetic resin such as polyacetal or nylon having good slidability, so that it is possible to omit applying grease for maintaining slidability.

The elastic member 4 is placed on the guide member 8 from above.
The elastic member 4 is made of a substantially U-shaped spring wire, and winding parts 14 are provided on both sides of the middle side of the spring wire. A support piece portion 15 that is bent in a substantially U-shape is formed therein, and arm portions 16 are extended to the outer ends of the both winding portions 14, respectively. Elastic member 4
Both winding portions 14 are engaged and held in recesses 17 formed on the upper surface of the blade base 1, and hook portions 18 projecting on the upper surface of the blade base 1 support the elastic piece 4 of the elastic member 4. The elastic member 4 is attached to the upper side of the guide body 8 by locking 15.

In this case, the tips of both arm portions 16 of the attached elastic member 4 are engaged with the spring engaging portions 19 formed on both upper surfaces of the guide body 8 in the vicinity of the tip thereof, so that the guide bodies 8 are moved. Through the elastic member 4, the movable blade 3 is pressed against the fixed blade 2. Further, an interlocking engagement portion 10 composed of a pair of convex pieces is provided on the rear portion of the guide body 8 so as to eccentrically rotate the driver element 9 (see FIG. 21) engaged with the interlocking engagement portion 10. Alternatively, the movable blade 3 is linearly reciprocated on the fixed blade 2 in association with the reciprocating vibration, and is guided by the guide mechanism 7 at that time.

Here, as shown in FIGS. 6 and 7, the amount of rattling δ of the comb tooth-shaped cutting edge portion 3a is δ = Zsin [asin (y / x)].
(Z: width of the movable blade 3, y: gap between the projections 5 and the recesses 6 in the guide mechanism 7, x: effective pitch between the projections 5 in the guide mechanism 7)
It is possible to suppress the amount of rattling δ of the comb tooth-shaped blade tip portion 3a of the movable blade 3 against the rattling in the guide mechanism 7. Therefore, the range of accuracy of managing the dimensional tolerances of the convex portion 5 and the concave portion 6 in the guide mechanism 7 can be widened, and thereby the process capability at the time of manufacturing and assembling can be improved.

Therefore, in the hair cutter of this embodiment, the reciprocating motion of the movable blade 3 is guided by the projection 5 and the recess 6 serving as the guide mechanism 7 being fitted to each other and slid, and the movable blade 3 is moved. The blade 3 is smoothly reciprocated. Moreover, since the convex portion 5 and the concave portion 6 serving as the guide mechanism 7 are arranged outside the movable blade 3 and the fixed blade 2, the guide mechanism 7 can be used regardless of the size of the movable blade 3 and the fixed blade 2. The movable blade 3 can be elongated in the lateral direction, whereby the sliding contact surface pressure in the guide mechanism 7 is reduced and the movable blade 3 is reciprocated.
Rattling is also reduced, and the strength and wear surface are improved.

A guide mechanism 7 is attached to the movable blade 3 and the fixed blade 2.
The movable blade 3 does not require additional hole processing for
Also, the fixed blade 2 is less likely to warp and its rigidity is ensured, and the movable blade 3 and the fixed blade 2 can be shared. Furthermore, since the guide mechanism 7 is located outside the sliding contact portion between the movable blade 3 and the fixed blade 2, it is difficult for dust and the like to enter the guide mechanism 7, and the smooth reciprocating movement of the movable blade 3 is prevented. Reserved.

Further, in the hair cutter of this embodiment, since the guide mechanism 7 is located on the rear side of the fixed blade 2 apart from the comb tooth-shaped blade tips 2a and 3a, hair scraps and the like to the guide mechanism 7 are formed. Is surely prevented from entering, whereby deterioration of the guide mechanism 7 is also prevented and stable cutting ability is maintained for a long period of time. Moreover, since the guide mechanism 7 is housed within the width W of the fixed blade 2, the blade for installing and fixing the fixed blade 2 when using both ends of the comb tooth-shaped blade tips 2a, 3a for shaving etc. Since both sides of the base 1, the guide body 8 and the like do not project, they do not interfere and the cutting work such as simultaneous shaving can be performed without any trouble.

Further, in the hair cutter of this embodiment, the convex portion 5 and the concave portion 6 serving as the guide mechanism 7 are arranged on the rear end portion of the guide body 8 provided on the rear portion of the movable blade 3 and on the blade base 1. Since the protrusions 5 and the recesses 6 are provided, the protrusions 5 and the recesses 6 can be easily formed integrally with the guide body 8 and the blade base 1 by using a synthetic resin having a good slidability. The sliding becomes smooth, and it is not necessary to provide the guide mechanism 7 on the movable blade 3 itself, and the rigidity strength of the movable blade 3 is further improved. Further, in this case, the convex portion 5 in the form of a convex piece bent downward is easily integrally formed on the rear end edge of the guide body 8, and the concave groove 6 is easily integrated on the upper surface of the blade base 1. The guide body 8 and the blade base 1 are formed of synthetic resin together with the guide mechanism 7 more easily.

Further, in the hair cutter of the embodiment, the interlocking engagement portion with the driving element 9 that reciprocates the movable blade 3 is used.
Since 10 is provided on the guide body 8 and is located right above the guide mechanism 7 (see FIG. 21), the twisting (moment) in the reciprocating motion of the movable blade 3 is small, and the motion loss is reduced, so that the driver element The load current of the motor 23, which is the drive source for the drive source 9, is also suppressed, the cutting ability is improved and the drive source is downsized.

Further, in the hair cutter of this embodiment, as shown in FIGS. 6 and 7 (a), the movable side convex piece-shaped convex portion 5 serving as the guide mechanism 7 has a fixed concave groove shape. Recess 6
Is set to be longer than the operating range of the convex portion 5, and in this case, the both end surfaces of the convex portion 5 are rounded. Therefore, when the guide mechanism 7 is twisted, the inner wall surfaces of the both convex ridges 61 on both sides of the concave portion 6 come into contact with the Rs on both end surfaces of the convex portion 5 to smoothly slide without being caught.

Incidentally, FIG. 7 (b) shows the case where the convex portion 5 is arranged on the blade base 1 side and the concave portion 6 is arranged on the guide body 8 side, contrary to the hair cutter of the above embodiment. Also in this case, the fixed-side convex portion 5 is set longer than the operating range of the movable-side concave portion 6, and both end surfaces of both convex ridges 61 on both sides of the concave portion 6 are rounded. Therefore, when the guide mechanism 7 is twisted, the concave portions 6 are formed on both side surfaces of the convex portion 5.
The Rs on both end surfaces of the both ridges 61 on both sides come into contact with each other to smoothly slide without catching.

By the way, in the hair cutter of the present invention, as shown in FIG. 8 (a), both guide mechanisms 7 composed of the convex portion 5 and the concave portion 6 are spaced apart from each other on the rear side of the fixed blade 2. It can be arranged wider than the width W of the fixed blade 2, and as shown in FIG.
It is also possible to dispose the two guide mechanisms 7 and 7 with a large gap therebetween and to have a width wider than the width W of the fixed blade 2 on both sides of the fixed blade 2. In this way, by widening the effective pitch between the convex portions 5 of both guide mechanisms 7 in the width direction, the comb-teeth-shaped blade tip portion of the movable blade 3 described in FIGS.
It becomes possible to further suppress the amount of rattling δ of 3a.

Further, in the hair cutter of the above-mentioned embodiment, as shown in FIG. 9, when the protrusions 61 forming the recesses 6 of the guide mechanism 7 are continuously projected over substantially the entire width direction of the blade base 1, The ridges 61 serve as reinforcing ribs so that the blade base 1 is less likely to warp, and the warp of the fixed blade 2 installed and fixed on the blade base 1 is also corrected. Further, as shown in FIG. 10, when the concave groove 6 of the guide mechanism 7 is formed so as to be closed at both ends thereof, grease to be lubricated to maintain slidability and wear resistance is the same. It is preferable that it can be stored in No. 6. Alternatively, as shown in FIG. 11, another sliding member 20 made of a material having excellent slidability and abrasion resistance may be provided between the convex portion 5 and the concave portion 6 which serve as the guide mechanism 7, The slide in the guide mechanism 7 becomes smooth, and the life and noise can be reduced.

Further, in the hair cutter of the present invention, as shown in FIG. 12, the rear end portion of the movable blade 3 is extended to the rear side, and the convex portion 5 serving as the guide mechanism 7 and the interlocking member are provided on the extended portion. The joint portion 10 and the like can be integrally formed, and here, the extending portion of the movable blade 3 also serves as the guide body 8 in the hair cutter of the above-described embodiment. Further, as shown in FIG. 13, the rear end portion of the fixed blade 2 may be extended to the rear side, and the concave portion 6 serving as the guide mechanism 7 may be integrally formed in the extended portion. In such a case, it is possible to reduce the number of parts, improve the accuracy of the combined dimensions, and reduce noise due to rattling or the like.

Further, in the hair cutter of the above embodiment, as shown in FIG. 14, the thickness dimension of the convex portion 5 is made smaller toward the front side, and the groove width dimension of the concave portion 6 is made smaller toward the bottom side. Therefore, it is preferable to incline both slide sliding contact surfaces 7a. In this case, the guide mechanism 7
Since the slide sliding contact surface 7a between the convex portion 5 and the concave portion 6 that are to be inclined incline like a wedge, even if the slide sliding contact surface 7a wears
Enter into the concave portion 6 due to the pressing force α of the elastic member 4 and the like, and are always in stable sliding contact with each other without rattling, the cutting ability is secured and the life is extended.

In the above case, as shown in FIG. 15, an auxiliary guide body 81, which is a separate body, is attached to the guide body 8 so as to be vertically movable, and the auxiliary guide body 81 is moved downward at the rear end edge thereof. Bent convex part 5
Alternatively, the guide mechanism 7 may be formed by integrally forming the convex portion 5 and the concave portion 6 formed on the upper surface of the blade base 1. In this case, the spring 21 is interposed between the guide body 8 and the auxiliary guide body 81, and the spring 21 urges the auxiliary guide body 81 downward. Therefore, the sliding contact portion between the convex portion 5 and the concave portion 6 is preloaded by the spring 21, and the convex portion 5 enters the concave portion 6 by the preload in addition to the pressing force α of the elastic member 4. It will always be in stable sliding contact without rattling.

Further, in the hair cutter of the above-described embodiment, as shown in FIG. 16, the movable blade 3 is rotated up and down about the portion of the guide mechanism 7, so that the movable blade 3 and the fixed blade 2 are separated from each other. The two comb tooth-shaped blade edge portions 3a, 2a are opened and closed. In this case, the movable blade 3 is pushed by pushing the interlocking engagement portion 10 provided on the rear portion of the guide body 8 downwardly.
Rotates upward together with the guide body 8 to open the so-called comb tooth-shaped blade tip portions 3a and 2a of the movable blade 3 and the fixed blade 2, so-called,
The mouth is open.

Therefore, in this case, the guide mechanism 7
By rotating the movable blade 3 up and down around the part of the above, it is possible to easily open and close between the comb-teeth-shaped blade tip portions 3a, 2a of the movable blade 3 and the fixed blade 2. Cleaning work of both comb tooth-shaped cutting edge portions 3a and 2a and maintenance work such as grease coating on the inside thereof can be easily performed. In this case, it is preferable to form the convex portion 5 and the concave portion 6 of the guide mechanism 7 as shown in FIG.

That is, in the structure shown in FIG.
A contact surface between the convex portion 5 and the concave portion 6 is formed in a substantially semicircular shape having a semicircular cross section. In the structure shown in FIG. 17B, the tip of the convex portion 5 is formed in a substantially wedge shape, and the tip of the convex portion 5 is in contact with the bottom apex of the concave portion 6 having a V-shaped groove in cross section. Further, in the structure shown in FIG. 17C, the tip end side of the convex portion 5 is formed to have an approximately 1/4 arc surface in cross section, and the tip end side of the convex portion 5 slides on the groove edge portion of the concave groove 6, As a result, the guide body 8 is rotated. In the structure shown in FIG. 17 (d),
The convex portion 5 and the concave portion 6 are both curved so as to have the same curvature, and the convex portion 5 and the concave portion 6 are slidably contacted with each other along the curvature. In any of these cases, the rotation of the guide mechanism 7 is smooth, and the mouth opening operation is smoothly performed.

Further, in the hair cutter of the present invention, as shown in FIG. 18, a case where both guide mechanisms 7 consisting of a convex portion 5 and a concave portion 6 are arranged on both sides of the fixed blade 2 (FIG. 8).
(B)), the movable blade 3 is rotated up and down about the part of the guide mechanism 7 so that the comb tooth-shaped blade tip portions 3a and 2a between the movable blade 3 and the fixed blade 2 are opened and closed. It can also be done as described. Even in this case, when the interlocking engagement portion 10 of the guide body 8 is pushed downward A, the movable blade 3 is rotated together with the guide body 8 upward B, so that the movable blade 3 and the fixed blade 2 are separated from each other. The space 3a, 2a between the comb tooth-shaped blade edges is opened.

Further, in the hair cutter of the present invention, as shown in FIG. 19, the mouth opening operation can be performed also by forming the bendable portion 22 which becomes the center of rotation in the middle of the guide body 8. Become. In this case, the movable blade 3 is rotated up and down together with the guide plate 8 around the bendable portion 22 of the guide body 8 so that the comb tooth-shaped blade tip portion between the movable blade 3 and the fixed blade 2 is rotated. 3a and 2a are opened and closed. Even in this case, by pushing the interlocking engagement portion 10 of the guide body 8 downward A, the movable blade 3 rotates together with the guide body 8 upward B,
Between the movable blade 3 and the fixed blade 2 between the comb tooth-shaped blade tip portions 3a, 2a are opened.

Therefore, in this case as well, the bendable portion 22
By rotating the movable blade 3 up and down together with the guide plate 8 around the center, it is possible to easily open and close between the comb tooth-shaped blade tips 3a, 2a of the movable blade 3 and the fixed blade 2. Thus, the cleaning work of the both comb tooth-shaped cutting edge portions 3a, 2a and the maintenance work such as grease application on the inside thereof can be easily performed. Further, in this case, since the opening operation does not affect the guide mechanism 7, the guide mechanism 7 is less likely to be damaged, and a large contact area can be secured in the guide mechanism 7. It is possible to improve the amount of wear and the strength of the contact area.

In this case, FIG. 20 (a)
As shown in Fig. 20, a part of the guide body 8 is formed in a bellows shape to form a bendable portion 22, or as shown in Fig. 20 (b), a part of the guide body 8 is formed in a thin wall shape and bendable. Also referred to as part 22. It is also possible to form a mechanically connecting rotary shaft portion that can be bent in a part of the guide body 8 and use the rotary shaft portion as the bendable portion 22.

As in the hair cutter of the above-mentioned embodiment, as shown in FIG. 21, the interlocking engaging portion 10 consisting of a pair of convex pieces is projected on the rear portion of the guide body 8.
An eccentrically rotating driver element 9 is engaged between both convex pieces of the interlocking engagement portion 10. When the driver 23 is eccentrically rotated by the motor 23, the guide body 8 and the movable blade 3 are reciprocally moved on the fixed blade 2 together with the interlocking engagement portion 10. In this case, the guide mechanism 7 is arranged on both sides below the engagement portion between the driver 9 and the interlocking engagement portion 10, and when the movable blade 3 is linearly reciprocated, the guide mechanism 7 is It acts as a guide without hindrance.

Also in this case, since the interlocking engagement portion 10 with the driver 9 for reciprocating the movable blade 3 is provided on the guide body 8 and is located right above the guide mechanism 7, the movable blade 3 is movable. Blade 3
In the reciprocating motion of the motor 23 is reduced, the operation loss is reduced, the load current of the motor 23 that is the drive source of the driver 9 is also suppressed, the cutting ability is improved and the motor 23 that is the drive source is reduced.
The miniaturization of is also intended.

By the way, in the conventional hair cutter, as shown in FIG. 22, the tip end of the arm portion 16 of the spring wire which becomes the elastic member 4 is engaged with the spring engaging portion 19 to be coupled with the movable blade 3. Here, the spring engaging portion 19 is formed by the substantially cylindrical first protruding piece 24 and the substantially L-shaped second protruding piece 25, and at the tip of the arm portion 16 of the elastic member 4. A tip locking portion 26 bent into a substantially L shape is formed, and the tip locking portion 26 of the arm portion 16 serves as the spring engaging portion 19 of the first protruding piece 24 and the second protruding piece. It is engaged from above with 25. In this case, since the mutual positional relationship between the movable blade 3 and the fixed blade 2 is determined and secured by the position of the tip locking portion 26 of the elastic member 4, the elastic member 4 must be incorporated from above. is there.

On the other hand, in the hair cutter of the above-mentioned embodiment, the tips of both arm portions 16 of the elastic member 4 are not bent and are linear, and are formed on both upper surfaces near the tip of the guide body 8. The spring engaging portions 19 are engaged by being inserted from the rear. In this case, as shown in FIGS. 2 to 4, the spring engaging portion 19 is formed in a groove shape between the pair of protruding ridges, and the both protruding ridges are inclined and projected so as to expand rearward. Since it is provided, the tip end of the arm portion 16 of the elastic member 4 is smoothly engaged with the spring engaging portion 19 from the rear side.

Further, in this case, as shown in FIG. 23, the spring engaging portion 19 is provided on the guide member 8 so as to project in a gate shape, and the spring engaging portion 19 is provided.
If the tip of the arm portion 16 of the elastic member 4 is abutted against the inner upper wall of the arm, the tip of the arm portion 16 will be difficult to come off upward, and the burrs and the like at the tip of the arm portion 16 will be the same. It is covered with the spring engaging portion 19 and is safe. Also in this case, both winding parts 14 of the elastic member 4 are respectively engaged and held in the recesses 17 formed on the upper surface of the blade base 1, and the hook parts projecting on the upper surface of the blade base 1 are provided. By locking the support piece 15 of the elastic member 4 to the elastic member 4, the elastic member 4 is moved to the position shown in FIG.
It is easily attached to the upper side of the guide body 8 while being slid in the direction of the arrow.

[0054]

As described above, in the hair cutter according to the first aspect of the present invention, the movable blade is smoothly reciprocated by being guided by the guide mechanism, and the guide mechanism is lengthened. Also, sliding contact surface pressure in the guide mechanism and rattling of the movable blade are reduced.
In addition, the strength of the movable blade and the fixed blade is secured, hair dust and the like are less likely to enter the guide mechanism, and a smooth reciprocating operation of the movable blade is secured.

Further, in the hair cutter according to the second aspect of the present invention, in particular, since the guide mechanism is located on the rear side of the fixed blade, invasion of hair scraps into the guide mechanism is surely prevented. As a result, deterioration of the guide mechanism is prevented, and stable cutting performance is maintained for a long period of time. Moreover, since the guide mechanism is accommodated within the width of the fixed blade, cutting work such as shaving can be performed without any trouble.

Further, in the hair cutter according to the invention of claim 3, in particular, the convex portion and the concave portion which become the guide mechanism can be easily formed of the synthetic resin integrally with the guide body and the blade base, As a result, the sliding of the guide mechanism becomes smooth, the guide mechanism need not be provided on the movable blade itself, and the strength of the movable blade is further improved.

Further, in the hair cutter according to the invention of claim 4, in particular, the convex portion of a convex piece bent downward is easily integrally formed on the rear end edge of the guide body, and A groove-like recess is easily integrally formed on the upper surface, and the guide body and the blade base are made of synthetic resin together with the guide mechanism more easily.

Further, in the hair cutter according to the invention of claim 5, in particular, the slide sliding contact surfaces of the convex portion and the concave portion which are the guide mechanism are inclined like a wedge, and the slide sliding contact surfaces are worn. However, the convex portion enters into the concave portion due to the pressing force of the elastic member or the like, and always makes stable sliding contact with each other without rattling, the cutting ability is secured and the life is extended.

Further, in the hair cutter according to the invention of claim 6, in particular, the interlocking engagement portion provided on the guide body is located right above the guide mechanism, and the twisting of the movable blade in the reciprocating motion is small. Therefore, the operation loss is reduced, the load current is also suppressed, the cutting ability is improved, and the drive source is downsized.

Further, in the hair cutter according to the invention of claim 7, in particular, by rotating the movable blade up and down around the portion of the guide mechanism, it is possible to easily open and close between the comb tooth-shaped blade tips. This makes it possible to easily perform the cleaning work of the comb tooth-shaped blade tips and the maintenance work inside thereof.

[Brief description of drawings]

FIG. 1A is a schematic plan view showing a main part of a hair cutter according to an embodiment of the present invention, and FIG.

FIG. 2 is a perspective view showing a main part of the hair cutter.

FIG. 3 is an exploded plan view showing a main part of the hair cutter.

FIG. 4 is an exploded perspective view showing a main part of the hair cutter.

FIG. 5 is a schematic plan view showing a main part of the hair cutter.

FIG. 6 is a schematic plan view showing a main part of the hair cutter.

FIG. 7A is a schematic plan view of an essential part for explaining a rattling state in the hair cutter, and FIG. 7B is a schematic plan view of an essential part for explaining a rattling state in an applied form of the hair cutter.

8A and 8B are schematic plan views showing main parts of different hair cutters, respectively, illustrating another application mode of the hair cutter.

FIG. 9 is a schematic plan view of a main part illustrating still another application mode of the hair cutter.

FIG. 10 is a schematic plan view of a main part illustrating still another application mode of the hair cutter.

FIG. 11 is a schematic vertical cross-sectional view of a main part illustrating a guide mechanism in still another application mode of the hair cutter.

12A is a schematic plan view, and FIG. 12B is a schematic vertical cross-sectional view illustrating a movable blade in still another application mode of the hair cutter.

FIG. 13A is a schematic plan view, and FIG. 13B is a schematic vertical cross-sectional view illustrating a fixed blade in still another application mode of the hair cutter.

14A is a schematic vertical cross-sectional view of a main part of the hair cutter in a state before wear, and FIG. 14B is a schematic vertical cross-sectional view of a main part in a state after wear.

FIG. 15 is a schematic vertical cross-sectional view of a main part illustrating still another application mode of the hair cutter.

FIG. 16 is a schematic vertical sectional view of an essential part showing the opened / closed state of the movable blade of the hair cutter.

FIG. 17 is a schematic vertical cross-sectional view of essential parts showing different guide mechanisms (a) to (d) illustrating a rotating state of the guide mechanism in still another applied mode of the hair cutter.

FIG. 18 is a schematic vertical sectional view of an essential part showing an opened / closed state of a movable blade in still another applied mode of the hair cutter.

FIG. 19 (a) is a schematic plan view of an essential part showing an opened / closed state of a movable blade in still another applied mode of the hair cutter.
(B) is a schematic vertical sectional view of a main part.

20 (a) and 20 (b) are schematic vertical cross-sectional views showing main parts of different guide bodies, respectively, which illustrate another guide body that can be used in the application shown in FIG.

FIG. 21 (a) is a schematic plan view of a main part, showing a reciprocating operation state of a movable blade in the applied form shown in FIG. 19;
Is a schematic vertical sectional view of a main part.

22A and 22B are schematic plan views of a main part and FIG. 22B is a schematic vertical cross-sectional view of a main part, showing a mounting state of an elastic member in a hair cutter of a conventional example.

23A and 23B are schematic plan views of a main part and FIG. 23B is a schematic vertical cross-sectional view of a main part, showing a mounting state of an elastic member in a hair cutter which is still another application mode of the present invention.

FIG. 24 is a plan view showing a main part of a conventional hair cutter.

FIG. 25 (a) is a schematic plan view of a main part at the time of stop, showing a reciprocating motion state of a movable blade in the hair cutter of the conventional example.
(B) is a schematic plan view of a main part during operation.

26 (a) is a schematic plan view showing a main part of another conventional hair cutter, and FIG. 26 (b) is a schematic exploded plan view.

[Explanation of symbols]

1 blade base 2 fixed blade 2a Comb tooth edge 3 movable blades 3a Comb tooth edge 4 Elastic member 5 convex 6 recess 7 Guide mechanism 7a Sliding contact surface 8 guide 9 driver 10 Interlocking engagement part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masami Yanosaka             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Hiroyuki Kameoka             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 3C056 CA02 CA09 CA32

Claims (7)

[Claims] 1. A blade base, a fixed blade installed and fixed on the blade base, a movable blade slidably reciprocally moved on the fixed blade, and the movable blade with respect to the fixed blade. And an elastic member that presses the hair, and a hair cutter that cuts hair between the comb tooth-shaped blade tips formed at the front end portions of the fixed blade and the movable blade, and is slidably fitted to each other. A guide mechanism that consists of convex and concave parts and guides the reciprocating movement of the movable blade.
A hair cutter arranged outside the movable blade and fixed blade. 2. The guide mechanism is arranged behind the fixed blade within the width dimension of the fixed blade.
The listed hair cutter. 3. A guide body, which is fixedly coupled to a movable blade, is provided at a rear portion of the movable blade, and a convex portion and a concave portion serving as a guide mechanism are provided at a rear end portion of the movable blade and a blade base. The hair cutter according to claim 2, wherein 4. A convex piece-shaped convex portion bent downward is formed on a rear end edge of the guide body, and a concave groove-shaped concave portion is formed on an upper surface of the blade base. Hair cutter. 5. The thickness dimension of the convex portion is formed smaller toward the front side, and the groove width dimension of the concave portion is formed smaller toward the bottom side.
The hair cutter according to claim 4, wherein the sliding contact surfaces of both are slanted. 6. A guide body is provided with an interlocking engagement portion with a driving element for reciprocating the movable blade, and the interlocking engagement portion is located directly above the guide mechanism. The hair cutter described in any one of. 7. The movable blade is rotated up and down around a portion of the guide mechanism to open and close between the comb tooth-shaped blade tips of the movable blade and the fixed blade. The hair cutter according to claim 1.