EP1795317B1 - Razor for hair cut and replacement razor for hair cut - Google Patents
Razor for hair cut and replacement razor for hair cut Download PDFInfo
- Publication number
- EP1795317B1 EP1795317B1 EP04819482.3A EP04819482A EP1795317B1 EP 1795317 B1 EP1795317 B1 EP 1795317B1 EP 04819482 A EP04819482 A EP 04819482A EP 1795317 B1 EP1795317 B1 EP 1795317B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hair
- cutting
- razor
- blades
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/104—Hair brush
Definitions
- the present invention relates to a hair-cutting razor for partially cutting hair, and a replaceable hair-cutting razor applied to the hair-cutting razor.
- Hair-cutting razors are used widely for creating attractive hairstyles.
- a blade body 32 of a razor 30 is structured such that a blade edge 34 is covered discontinuously by semicircular protrusions 36 protruding from the blade edge 34, and thus an exposed blade edge 34a and a covered blade edge 34b are provided alternately.
- a groove 38 for limiting the amount of combing during hair cutting is provided between adjacent pairs of the protrusions 36, 36 (see Figs. 16 and 17 ).
- the exposed blade edges 34a face the hair at a right angle (in the shape of a cross), similarly to known razors of this type (see Figs. 18 and 19 ).
- the exposed blade edges 34a face the hair H at a right angle, the hair H may be cut excessively.
- the blade edge 34a of the blade body 32 moves in a right-angled direction to the hair H, as shown in the drawings, and hence the hair H can be cut reliably.
- the cutting function improves as the angle of incline of the blade edge 34a relative to the hair H shifts from an acute angle toward a right angle, and as the cutting function improves, the hair H may be cut excessively, leading to a difference between the hair in the uncut portion and the hair in the cut portion. As a result, an unbalanced haircut may be created.
- the angle of incline of the blade edge 34a may be varied, thereby suppressing excessive hair cutting, but an operation to vary the angle of incline is not always easy.
- the razor 30 When the razor 30 is used to cut the hair H on one's own head, particularly the hair H on the rear surface of the head which is difficult to see, it is necessary to rely on a "knack", or in other words intuition, and therefore the hair H may be cut excessively, or on the other hand, the amount of hair that is cut may be insufficient. Hence, the difficult of avoiding an unbalanced haircut remains.
- US 6,161,288 A describes a four blade bi-directional razor structure with a flexible guard system.
- the razor is preferably formed of any suitable molded plastic material to provide a head and an integral hand grip or handle.
- the hand grip may have an upper portion which is molded integrally with the head and a lower angled and hand-holding portion.
- the head is provided with a first pair of razor blades and an oppositely, angularly extending, second pair of razor blades.
- the blades are each formed of a narrow, single sharpened edge razor blade grip.
- Each blade strip has an inner portion, which is embedded within the head, and an outer, sharpened edge portion, which extends outwardly from the head for cutting whisker. The sharpened edges are arranged so that edges cut in one direction while edges cut in the opposite direction.
- the other pair when one pair of edges cut, the other pair merely drags or rides upon the skin and guides the edges that cut.
- the two opposing pairs of blades are close to each other, and extent outwardly at an acute angle relative to the working plane of the head of the razor.
- This acute angle may be any suitable value, such as in the range of about 5° to about 40°, with angles in the range of 15° to 35° being presently preferred.
- the razor is applied against the user's skin and is moved back and forth.
- the sharp edges of the one pair of blades engage the skin and cut the hair in the upward direction.
- the user may move the handle downwardly so that the sharp edges of the second pair of razor blades cut the hair without lifting the razor head away from the skin.
- US 2,610,393 A describes a hair-cutting and collecting device.
- the hair collecting receptacle is composed of two concavo-convexed walls.
- a forward side of the receptacle is formed with an entrance opening for cut hair, or stated differently, the forward edge of the wall is spaced sufficiently from the forward edge of the wall to define an entrance opening for cut hair.
- the forward edge of the wall is formed with a plurality of transverse inwardly tapering slots to form comb teeth between adjacent slots and a toothed edge for the wall.
- a pair of relatively inclined razor blades are held clamped against the inner face of the wall by an elongated clamping plate whose ends are secured to the wall.
- the receptacle is grasped by one hand of a user and passed through the user's hair with the toothed edge of the wall functioning as a comb to lift the hair and the blades, will cut the hair whereupon the cut hair will enter the receptacle.
- the hair grooming device comprises a support body having an elongated head and an elongated shaped handle projecting therefrom.
- the head is shaped as a rectangular solid having opposed broad top and bottom faces, opposed elongated side surfaces, and opposed end surface.
- a handle projects from the end surface.
- a rectangular array of hairbrush bristle members are rooted into top face and project perpendicularly therefrom. Bristle members are distributed generally throughout top face and are tapered in length transversely of the head so that the longest bristles members are in the center of head as viewed from the end of the head.
- Within a pocket there is carried a double-edged razor blade cartridge.
- the cartridge includes an elongated rectangular carrier plate from opposite sides of which project longitudinally elongated razor blade edges in opposite directions.
- the blade edges project from top and bottom faces, respectively.
- blade cartridges are adapted to slide downward in pockets to project the blades at adjustable heights alongside comb teeth.
- hair is directed serially through the edges of the three blades carried in pockets to make various new cutting techniques possible by setting each blade at a different height.
- JP 60-103402 U describes a comb being provided with an replaceable hair-cutting razor.
- a replaceable hair-cutting razor with a blade is adapted to be inserted in a distal portion of a comb basis material to be located next to comb teeth being aligned in the length direction of the comb basis material.
- the cutting edge of the blade of the hair-cutting razor stands upright on the comb basis material and in line with the comb teeth.
- the cutting edge is hereby facing in a right-angled direction to the upright direction of the blade and oriented in the length direction of the line of comb teeth each standing upright on the comb basis material.
- An object of the present invention is to solve the problems of the background art described above by providing a hair-cutting razor which cuts hair in a balanced fashion without cutting the hair excessively or insufficiently, and replace hair-cutting razor which is applied to the hair-cutting razor.
- Another object is to provide a hair-cutting razor and a replaceable hair-cutting razor which excel in safety such that human fingers or the like are not injured by a blade when handling the hair-cutting razor and replaceable hair-cutting razor.
- a first invention for solving the problems is characterized in that at least one blade comprising a cutting edge stands upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade.
- the phrase "the cutting edge is facing in a right-angled direction to the upright direction of the blade” includes a case in which the cutting edge of the blade is facing at a right angle (90 degrees) to the upright direction of the blade, a case in which the angle is smaller than a right angle, and a case in which the angle is larger than a right angle.
- the phrase includes any angle within a range which enables the blade to stroke the hair during hair cutting.
- a second invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in that the cutting edges of the at least two blades are disposed in different directions to each other.
- a third invention for solving the problems is characterized in that, in the first or second invention for solving the problems, the cutting edge of the blade is inclined about a reference line of the hair-cutting razor host material.
- a fourth invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, and the cutting edges of the at least two blades are facing in different directions to each other, characterized in that the blades are not disposed parallel to each other.
- the phrase "the blades are not disposed parallel to each other" indicates that the blades are not arranged in series, but disposed so as to protrude and retreat when seen from above.
- a fifth invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in that the cutting edges of the at least two blades are facing in the same direction as each other, and the blades are disposed parallel to each other.
- a sixth invention for solving the problems is characterized in that, in the first, second, third, fourth, or fifth invention for solving the problems, a control member for suppressing injuries during handling is provided adjacent to the cutting edge of the blade.
- a seventh invention for solving the problems is characterized in that, in the first, second, third, fourth, fifth, or sixth invention for solving the problems, the control member for suppressing injuries during handling doubles as a bristle.
- the eighth through fourteenth inventions for solving the problems to be described below all relate to a replaceable hair-cutting razor having blades, which is provided detachably on the hair-cutting razor host material.
- An eighth invention for solving the problems is a replaceable hair-cutting razor in which at least one blade having a cutting edge stands upright on a razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in being provided detachably on a hair-cutting razor host material.
- a ninth invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, and the cutting edges of the at least two blades are facing in different directions to each other, characterized in being provided detachably on a hair-cutting razor host material.
- a tenth invention for solving the problems is characterized in that, in the eighth or ninth invention for solving the problems, the cutting edge of the blade is inclined about a reference line of the razor host material.
- An eleventh invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, the cutting edges of the at least two blades are facing in different directions to each other, and the blades are not disposed parallel to each other, characterized in being provided detachably on a hair-cutting razor host material.
- a twelfth invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, the cutting edges of the at least two blades are facing in the same direction as each other, and the blades are disposed parallel to each other, characterized in being provided detachably on a hair-cutting razor host material.
- a thirteenth invention for solving the problems is characterized in that, in the eighth, ninth, tenth, eleventh, or twelfth invention for solving the problems, a control member for suppressing injuries during handling is provided adjacent to the cutting edge of the blade.
- a fourteenth invention for solving the problems is characterized in that, in the eighth, ninth, tenth, eleventh, twelfth, or thirteenth invention for solving the problems, the control member for suppressing injuries during handling doubles as a bristle.
- a fifteenth invention for solving the problems is a hairbrush integrated with a hair-cutting razor, characterized in that cutting edges of a plurality of blades standing upright on a hair-cutting razor host material integrated with bristles of the hairbrush are oriented in appropriate different directions either alternately or randomly.
- a sixteenth invention for solving the problems is a hairbrush integrated with the hair-cutting razor, in which the hair-cutting razor according to any one the first through seventh inventions for solving the problems is integrated with bristles of the hairbrush, characterized in that hair resistance during brushing is caused to differ between a cutting edge side and a blade rear side by causing a bristle density to differ between the cutting edge side and the blade rear side.
- a seventeenth invention for solving the problems is the hairbrush integrated with a hair-cutting razor according to the sixteenth invention for solving the problems, characterized in that the hair resistance during brushing is made lower on the cutting edge side than on the blade rear side by making the bristle density on the cutting edge side lower than that of the blade rear side.
- An eighteenth invention for solving the problems is the hairbrush integrated with a hair-cutting razor according to the sixteenth or seventeenth invention for solving the problems, characterized in that the hair-cutting razor integrated with the hairbrush is detachable and replaceable relative to the brush.
- the first invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the blade body side of the hair-cutting razor is oriented toward the hair and typically moved over the scalp from the crown side of the head to the neck side.
- the cutting edges of the blades do not contact the hair in a right-angled direction, as in the background art, and instead move so as to stroke the hair.
- steps do not occur in the hair, and a single hair is cut diagonally from a cut starting portion to a cut end portion (see Fig. 6 ).
- the cutting edges of the blades are oriented downward in alignment with the length direction of the hair, and hence the hair is cut gradually as the cutting edges move so as to stroke or trim the hair (see Figs. 4 , 5 , and 6 ).
- the second invention for solving the problems is constituted as described above, and therefore shares the actions and effects of the first invention for solving the problems as well as exhibiting the following actions and effects.
- the hair-cutting razor When cutting the hair on the rear surface side of the head, the hair-cutting razor may be held in the right hand and moved from the right side of the rear surface side of the head toward the left of the neck side, or conversely, the hair-cutting razor may be held in the left hand and moved in an arc movement from the left side of the rear surface side of the head toward the right of the neck side.
- the cutting edges of the blades are preferably oriented in the movement direction.
- the razor must be manufactured in left-handed and right-handed versions, and to produce both versions separately is complicated, leading to an increase in production costs. Therefore, the inventor has disposed the cutting edges of the blades to face in different directions as described above so that the hair-cutting razor can be used in both the left and right hands.
- the third invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the cutting edges are inclined about a reference line of the hair-cutting razor host material, which contributes to a further improvement in the hair-cutting function.
- hair is cut along the spherical human scalp, and in this case, the cutting edges of the blades move in an arc movement having a fixed angular range.
- the fourth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the blades are not disposed parallel to each other, and therefore, when cutting short hair in particular, for example a man's hair, the hair is more likely to fly up and become caught in the cutting edge of the blade, making it easier to cut short hair.
- the fifth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the cutting edges of the blades are facing in the same direction as each other and parallel to each other, and therefore a further improvement in the cutting function can be expected.
- the sixth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- a control member for suppressing injuries during handling of the hair-cutting razor is provided adjacent to the cutting edge, and therefore injuries to fingers and so on do not occur.
- the seventh invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- control member doubles as a bristle, and hence the hair can be cut by the blades while being combed by the bristles.
- the eighth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the replaceable hair-cutting razor By attaching the replaceable hair-cutting razor to the hair-cutting razor main body, actions and effects shared with the first invention for solving the problems are exhibited, and in addition, the replaceable hair-cutting razor can be replaced when the razor becomes worn. As a result, a hair-cutting razor which cuts well can be obtained easily at all times.
- the ninth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the tenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the eleventh invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the twelfth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the thirteenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the fourteenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- the fifteenth invention for solving the problems is capable of achieving actions and effects whereby a desired haircut can be performed at the same time as a brushing operation.
- the sixteenth invention for solving the problems basically exhibits similar actions and effects to those of the fifteenth invention for solving the problems, but by making the bristle density different to the front and rear of the cutting edges, which are oriented in a fixed direction, it is possible to achieve actions and effects whereby a hair-cutting operation can be performed more smoothly.
- the seventeenth invention for solving the problems is capable of achieving actions and effects whereby a hair-cutting operation can be performed smoothly and a finished hairstyle achieved by brushing can be improved.
- the eighteenth invention for solving the problems is capable of achieving actions and effects whereby the hair-cutting razor can be replaced easily at any time when the cutting edges become blunt. As a result, the required cutting performance can be secured continuously.
- a hair-cutting razor 10 and a replaceable hair-cutting razor 20 according to embodiments of the present invention will now be described with reference to the drawings.
- the hair-cutting razor 10 of a first embodiment will now be described.
- blades 12 each comprising a cutting edge 12a are fixed onto a hair-cutting razor host material 14.
- the blades 12 are arranged in parallel, and the respective cutting edges 12a of the five blades 12 are facing in the same direction such that the cutting edges 12a are oriented toward the left side of the drawing (see Fig. 1 ).
- Fig. 1 is a preferred example of a case in which hair on the rear scalp surface of a head T is cut from the right side to the neck side, and hence is for right-handed use, as will be described in more detail below.
- the cutting edges 12a are oriented toward the right side of the drawing, i.e. in symmetry with the example shown in Fig. 1 , and hence this example is for left-handed use.
- These examples are basically constituted such that the blades 12 comprising the cutting edges 12a stand upright on the hair-cutting razor host material 14, and the cutting edges 12a are facing in a right-angled direction to the upstanding direction of the blades 12.
- a handle 16 is typically provided at one end of the hair-cutting razor host material 14, but the handle 16 is merely provided for convenience, and is not a requirement of the present invention.
- a single blade 12 comprising a cutting edge 12a is sufficient, but preferably two or more, and up to about five, as shown in Figs. 1 and 2 , upstanding blades 12 are provided.
- the thin plate form, rectangular blade 12 is inserted into a plastic blade cover 12b having a substantially U-shaped cross-section such that the cutting edge 12a is exposed to an open side of the cover 12b.
- the blade 12 is made of metal, and when used to cut hair on the scalp, care is required to reduce danger.
- the blade 12 typically takes a thin plate form and is therefore undeniably lacking in strength. Hence, by inserting the blade 12 into the blade cover 12b, an increase in the strength of the blade 12 is achieved.
- the material qualities thereof may help to prevent injury to the scalp during use of the razor 10.
- three protrusions 12c are provided on the cover 12b of the blade 12 at fixed intervals so as to protrude slightly beyond the line of extension of the cutting edge 12a of the blade 12 in a right-angled direction to the line of extension of the cutting edge 12a.
- protrusions 12c By means of these protrusions 12c, the strength of the cover 12b can be increased, and by providing the protrusions 12c at fixed intervals, hair H that is led between adjacent blades 12 during cutting can be separated by the protrusions 12c.
- the hair H does not become concentrated in a local portion of the cutting edge 12a, and therefore concentrated stress is not applied to the cutting edge 12a.
- the hair H can be cut smoothly, and no load is placed on the cutting edge 12a.
- a pin-shaped object standing upright beside the cutting edge 12a of the blade 12 is a control member 18 for protecting human fingers and so on during handling of the razor 10.
- the control member 18 is preferably positioned approximately 5mm, for example, to the left and right of a center line of the cutting edge 12a so as not to damage the hair H that is led to the cutting edge 12a during cutting of the hair H.
- the blade 12 side of the hair-cutting razor 10 is oriented toward the hair H and generally moved along the scalp T from the crown of the head to the neck side.
- the cutting edge 12a of the blade 12 does not contact the hair H in a right-angled direction, as in the background art, and instead, the cutting edge 12a moves along the hair H so as to stroke the hair H.
- the cutting edge 12a of the blade 12 faces the neck side of the body so as to follow the length direction of the hair H, and as the razor 10 moves, the hair H is gradually cut in the direction of an arrow Y in Figs. 4 and 5 along the hair H and so as to stroke the hair H.
- the cutting edge 12a of the blade 12 moves in an acute angle direction relative to the hair H, unlike the blade body 32 of the background art, which moves in a right-angled direction to the hair H.
- the cutting edge 12a which moves in an acute angle direction, then moves gradually from the hair H positioned on the top of the head toward the hair H positioned on the neck side, and since the movement direction of the cutting edge 12a is an acute angle direction nearly parallel to the hair H in this case, the cutting edge 12a never moves in a right-angled direction relative to the hair H.
- the hair H can be trimmed such that tapered hair H is obtained, in contrast to the cutting edge 34a of the background art which moves in a right-angled direction to the hair H, and hence an attractive hairstyle can be obtained (see Fig. 6 ).
- all of the cutting edges 12a of the blades 12 face the same direction, but in this example, as shown in the drawing, the cutting edges 12a of the six blades 12 are disposed such that adjacent cutting edges 12a are oriented in different directions.
- the disposal directions of the cutting edges 12a differ from each other by 180 degrees in the illustrated example, but this difference is not limited to 180 degrees.
- the pin-shaped control member 18 is provided beside the cutting edge 12a of the blade 12, as in the first embodiment.
- This example is advantaged in that the cutting edges 12a of the blades 12 are provided in different directions to each other, and therefore the razor 10 can be used with both the left and right [hands], as is evident from the above description of the first embodiment.
- the blades 12 are not inclined, but provided in parallel, whereas in this embodiment, the cutting edges 12a of the blades 12 are oriented in the same direction and divided into those which are inclined to the upper right of the drawing about a reference line L, and those which are inclined to the upper left of the drawing about the reference line L (see Figs. 8 and 9 ).
- this embodiment is applicable for use with both the left and right hands, similarly to the first embodiment'.
- the angle of the cutting edge 12a relative to the hair H during use of the hair-cutting razor 10 differs considerably according to the preferences of the user, the combing location of the hair H, and the cutting location of the hair H.
- the angle relative to the hair H may also differ according to differences in the dominant arm.
- the angle of incline of the cutting edge 12a of the blade 12 is preferably within a range of 10 to 80 degrees, and more preferably approximately 60 degrees, toward the upper left of the drawing relative to the reference line L of the hair-cutting razor host material 14 (see Fig. 8 ).
- the angle of incline is preferably symmetrical to that described above, i.e. within a range of 100 to 170 degrees, and more preferably 120 degrees, toward the upper right of the drawing relative to the reference line L of the hair-cutting razor host material 14 (see Fig. 9 ).
- the cutting edges 12a of the blades 12 are provided on only one side, but in this example, the cutting edges 12a are provided on both sides of the blades 12, and hence user-friendliness is taken into account regardless of whether the left or right hand is used.
- the cutting edges 12a of the blades 1 ii are facing in both directions and the blades 12 are disposed parallel to each other, whereas in this example, as shown in the drawing, six blades 12n1, 12n2, 12n3, 12n4, 12n5, and 12n6 are not disposed parallel to each other.
- the respective cutting edges a of the six adjacent blades 12n are oriented differently to each other when seen from above.
- the six blades 12n1, 12n2, 12n3, 12n4, 12n5, and 12n6 are disposed from the left end to the right end of the drawing such that the cutting edge 12a of the first blade 12n1 (left end) is positioned on the upper side of the drawing, while the cutting edge 12a of the second blade 12n2 is oriented toward the lower side of the drawing.
- the blade 12n2 also protrudes toward the upper side of the drawing.
- the cutting edge 12a of the third blade 12n3 is positioned on the upper side of the drawing together with the cutting edge 12a of the first blade 12n1, while the fourth blade 12n4 is set in the same orientation as the second blade 12n2.
- the configuration described above is repeated such that the fifth blade 12n5 and sixth (right end) blade 12n6 are disposed in a receding-protruding, or in other words non-parallel, fashion.
- the aforementioned control member 18, such as a safety pin or the like, is preferably provided next to the respective cutting edges 12a of the first blade 12n1 positioned at the left end of the drawing and the sixth blade 12n6 positioned at the right end of the drawing to suppress injuries to the fingers and so on during handling of the razor 10.
- the respective cutting edges 12a of the blades 12n2, n3, n4, n5 positioned between the two blades 12nl, n6 are positioned on the opposite inner side of the cutting edges 12a of the respective adjacent blades 12nl, 12n2, n3, n4, n5, n6.
- the control member 18 does not necessarily have to be provided on any of the cutting edges 12a except those of the two end blades 12n1, n6.
- bristles do not stand upright around the blades 12, but in this embodiment, a large number of the control members 18, doubling as bristles, are provided in an upright manner adjacent to the cutting edges 12a.
- the configuration of the blades 12 shown in Fig. 12 is symmetrical with that of the fifth embodiment described above, and no limitations are placed thereon.
- the term "bristle” may refer to the bristles of a brush, the bristles of a comb, and so on iii .
- the bristles typically take an elongated pin form, but may take any form, such as a form having a circular transverse section, other than an angular form which may injure fingers and so on.
- control members 18 double as bristles, the hair H can be cut while being combed.
- a replaceable hair-cutting razor 20 is provided detachably on the hair-cutting razor host material 14 in anticipation of use-related wear to the blades 12 of the hair-cutting razor 10.
- the replaceable hair-cutting razor 20 is described in detail in Figs. 13 to 15 .
- the replaceable hair-cutting razor 20 differs from the hair-cutting razor 10, in which the blades 12 are attached non-detachably to the hair-cutting razor host material 14, merely in that instead of attaching the blades 12 to the hair-cutting razor host material 14, the blades 12 and control members 18 are provided on a razor host material 22. Accordingly, constitutions shared with the hair-cutting razor 10 are incorporated herein, and description thereof has been omitted.
- the constitution of the razor host material 22 to and from which the hair-cutting razor 10 can be attached and detached will also be described (see Figs. 13 , 14 , 15 ).
- the blades 12 stand upright on the razor host material 22, and the control members 18 stand upright adjacent to the blades 12 (see Figs. 13 , 14 ).
- five blades 12 are provided, but as in the hair-cutting razor 10 described above, the number of blades may be set freely in accordance with requirements.
- the hair-cutting razor 10 is provided detachably in a fitting hole 24 formed in the razor host material 22, and hence the blade host material 22 is provided in accordance with the shape of the fitting hole 24 (see Figs. 13 to 15 ).
- one side of the host material 22 is formed with a wave-shaped undulating surface 22a
- one side of the fitting hole 24 of the hair-cutting razor host material 14 is formed with a wave-shaped undulating surface which corresponds to the wave-shaped undulating surface 22a on one side of the host material 22 (see Fig. 14 ).
- stoppers 22b, 22b are formed on each side of the host material 22 in the lengthwise direction.
- engaging stepped portions 22e, 22e corresponding to the stoppers 22b, 22b are formed on the two sides of the opening of the fitting hole 24 on the surface side of the hair-cutting razor host material 14 (see Fig. 15 ).
- the blade host material 22 is fitted into the fitting hole 24 of the hair-cutting razor host material 14.
- the wave-shaped undulating surface 22a of the host material 22 is fitted into the wave-shaped undulating surface of the fitting hole 24 in the hair-cutting razor host material 14, and the stoppers 22b, 22b provided on the host material 22 are supported by the engaging stepped portions 22e, 22e of the hair-cutting razor host material 14.
- the replaceable hair-cutting razor 20 can be attached securely and unmovingly to the hair-cutting razor host material 14.
- a grip 22c is provided on the host material 22 to assist removal of the replaceable hair-cutting razor 20 (see Fig. 13 ).
- the hair-cutting razor 10 in which the blades 12 comprising the cutting edges 12a stand upright on the hair-cutting razor host material 14, can be obtained (see Figs. 13 , 14 ).
- the actions and effects of the hair-cutting razor attached with the replaceable hair-cutting razor 20 are identical to the actions and effects of the hair-cutting razor 10 described above.
- the replaceable hair-cutting razor 20 can be removed from the hair-cutting razor host material 14 and a new replaceable hair-cutting razor 20 can be attached. As a result, a hair-cutting razor exhibiting an excellent cutting function can be obtained easily.
- the hair-cutting razor 10 of the present invention is provided integrally with the bristles of a hairbrush, and in particular, the density of the bristles differs on the front side and rear side of the cutting edges.
- the side on which the bristle density is to be relatively increased i.e. either the front or the rear of the cutting edges of the hair-cutting razor 10, may be selected arbitrarily in accordance with the purpose of the hair-cutting razor 10. Note, however, that in order to obtain an actual sense of the relative difference in the bristle density during hair cutting and brushing, the relative difference in the bristle density should be at least 5%. Preferably, the bristle density difference should be set between 10 and 30%.
- the bristle density on the front side of the cutting edges is preferably set to be relatively lower than the bristle density on the rear side in order to perform hair cutting and brushing efficiently.
- the reason for this is that before cutting the hair, the hair need only be arranged roughly at the cutting edges, whereas after the hair is cut, the hairstyle is preferably finished through fine brushing.
- an appropriate and safe hair-cutting operation can be performed easily and speedily, enabling even a person without specialist skills to perform a desired hair-cutting operation reliably.
- a person possessing specialist skills can perform a fine hair-cutting operation efficiently without the complicated work required conventionally, and hence the present invention may bring much new demand to the industry. Accordingly, the present invention is considered to possess excellent industrial applicability.
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Description
- The present invention relates to a hair-cutting razor for partially cutting hair, and a replaceable hair-cutting razor applied to the hair-cutting razor.
- Hair-cutting razors are used widely for creating attractive hairstyles.
- The invention described in Japanese Unexamined Patent Application Publication
2003-190675 - In this example, a
blade body 32 of arazor 30 is structured such that ablade edge 34 is covered discontinuously bysemicircular protrusions 36 protruding from theblade edge 34, and thus an exposedblade edge 34a and a coveredblade edge 34b are provided alternately. - Further, a
groove 38 for limiting the amount of combing during hair cutting is provided between adjacent pairs of theprotrusions 36, 36 (seeFigs. 16 and17 ). - However, in the background art described above, although the advantage of stabilizing the amount of hair that is supplied to the exposed
blade edges 34a of theblade body 32 during hair cutting through use of theprotrusions 36 can be appreciated, the exposedblade edges 34a face the hair at a right angle (in the shape of a cross), similarly to known razors of this type (seeFigs. 18 and19 ). - Hence, although hair H can be cut reliably by moving the
razor 30 along the scalp of a head T, problems arise in the following points. - Since the exposed
blade edges 34a face the hair H at a right angle, the hair H may be cut excessively. - To describe this point further with reference to
Figs. 16 through 19 , theblade edge 34a of theblade body 32 moves in a right-angled direction to the hair H, as shown in the drawings, and hence the hair H can be cut reliably. However, the cutting function improves as the angle of incline of theblade edge 34a relative to the hair H shifts from an acute angle toward a right angle, and as the cutting function improves, the hair H may be cut excessively, leading to a difference between the hair in the uncut portion and the hair in the cut portion. As a result, an unbalanced haircut may be created. - To avoid an unbalanced haircut for the hair H, the angle of incline of the
blade edge 34a may be varied, thereby suppressing excessive hair cutting, but an operation to vary the angle of incline is not always easy. - When the
razor 30 is used to cut the hair H on one's own head, particularly the hair H on the rear surface of the head which is difficult to see, it is necessary to rely on a "knack", or in other words intuition, and therefore the hair H may be cut excessively, or on the other hand, the amount of hair that is cut may be insufficient. Hence, the difficult of avoiding an unbalanced haircut remains. - To prevent unbalanced haircuts, it is necessary to adjust the angle at which the
blade edge 34a of therazor 30 contacts the hair H appropriately. - However, a manual operation to keep the incline angle of the
blade edge 34a of therazor 30 constant and cut the hair H continuously while maintaining the angle is extremely difficult, and as a result, it is difficult to cut the hair H in a balanced fashion. -
US 6,161,288 A describes a four blade bi-directional razor structure with a flexible guard system. The razor is preferably formed of any suitable molded plastic material to provide a head and an integral hand grip or handle. The hand grip may have an upper portion which is molded integrally with the head and a lower angled and hand-holding portion. The head is provided with a first pair of razor blades and an oppositely, angularly extending, second pair of razor blades. The blades are each formed of a narrow, single sharpened edge razor blade grip. Each blade strip has an inner portion, which is embedded within the head, and an outer, sharpened edge portion, which extends outwardly from the head for cutting whisker. The sharpened edges are arranged so that edges cut in one direction while edges cut in the opposite direction. Thus, when one pair of edges cut, the other pair merely drags or rides upon the skin and guides the edges that cut. The two opposing pairs of blades are close to each other, and extent outwardly at an acute angle relative to the working plane of the head of the razor. This acute angle may be any suitable value, such as in the range of about 5° to about 40°, with angles in the range of 15° to 35° being presently preferred. In use, the razor is applied against the user's skin and is moved back and forth. Herein, the sharp edges of the one pair of blades engage the skin and cut the hair in the upward direction. Then, the user may move the handle downwardly so that the sharp edges of the second pair of razor blades cut the hair without lifting the razor head away from the skin. -
US 2,610,393 A describes a hair-cutting and collecting device. The hair collecting receptacle is composed of two concavo-convexed walls. A forward side of the receptacle is formed with an entrance opening for cut hair, or stated differently, the forward edge of the wall is spaced sufficiently from the forward edge of the wall to define an entrance opening for cut hair. The forward edge of the wall is formed with a plurality of transverse inwardly tapering slots to form comb teeth between adjacent slots and a toothed edge for the wall. A pair of relatively inclined razor blades are held clamped against the inner face of the wall by an elongated clamping plate whose ends are secured to the wall. In practical use, the receptacle is grasped by one hand of a user and passed through the user's hair with the toothed edge of the wall functioning as a comb to lift the hair and the blades, will cut the hair whereupon the cut hair will enter the receptacle. -
US 3,990,461 A describes a razor cut comb brush. The hair grooming device comprises a support body having an elongated head and an elongated shaped handle projecting therefrom. The head is shaped as a rectangular solid having opposed broad top and bottom faces, opposed elongated side surfaces, and opposed end surface. A handle projects from the end surface. A rectangular array of hairbrush bristle members are rooted into top face and project perpendicularly therefrom. Bristle members are distributed generally throughout top face and are tapered in length transversely of the head so that the longest bristles members are in the center of head as viewed from the end of the head. Within a pocket there is carried a double-edged razor blade cartridge. The cartridge includes an elongated rectangular carrier plate from opposite sides of which project longitudinally elongated razor blade edges in opposite directions. The blade edges project from top and bottom faces, respectively. Further, blade cartridges are adapted to slide downward in pockets to project the blades at adjustable heights alongside comb teeth. Thus, hair is directed serially through the edges of the three blades carried in pockets to make various new cutting techniques possible by setting each blade at a different height. -
JP 60-103402 U - An object of the present invention is to solve the problems of the background art described above by providing a hair-cutting razor which cuts hair in a balanced fashion without cutting the hair excessively or insufficiently, and replace hair-cutting razor which is applied to the hair-cutting razor.
- Another object is to provide a hair-cutting razor and a replaceable hair-cutting razor which excel in safety such that human fingers or the like are not injured by a blade when handling the hair-cutting razor and replaceable hair-cutting razor.
- These objects are solved by the hair-cutting razor according to claim 1, the replaceable hair-cutting razor according to claim 8 and the hair brushes according to
claims 9 and 10. Further advantages, refinements and embodi-ments of the invention are described in the respective sub-claims. - A first invention for solving the problems is characterized in that at least one blade comprising a cutting edge stands upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade.
- In this specification, the phrase "the cutting edge is facing in a right-angled direction to the upright direction of the blade" includes a case in which the cutting edge of the blade is facing at a right angle (90 degrees) to the upright direction of the blade, a case in which the angle is smaller than a right angle, and a case in which the angle is larger than a right angle. In other words, the phrase includes any angle within a range which enables the blade to stroke the hair during hair cutting.
- A second invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in that the cutting edges of the at least two blades are disposed in different directions to each other.
- A third invention for solving the problems is characterized in that, in the first or second invention for solving the problems, the cutting edge of the blade is inclined about a reference line of the hair-cutting razor host material.
- A fourth invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, and the cutting edges of the at least two blades are facing in different directions to each other, characterized in that the blades are not disposed parallel to each other.
- In this specification, the phrase "the blades are not disposed parallel to each other" indicates that the blades are not arranged in series, but disposed so as to protrude and retreat when seen from above.
- A fifth invention for solving the problems is a hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a hair-cutting razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in that the cutting edges of the at least two blades are facing in the same direction as each other, and the blades are disposed parallel to each other.
- A sixth invention for solving the problems is characterized in that, in the first, second, third, fourth, or fifth invention for solving the problems, a control member for suppressing injuries during handling is provided adjacent to the cutting edge of the blade.
- A seventh invention for solving the problems is characterized in that, in the first, second, third, fourth, fifth, or sixth invention for solving the problems, the control member for suppressing injuries during handling doubles as a bristle.
- The eighth through fourteenth inventions for solving the problems to be described below all relate to a replaceable hair-cutting razor having blades, which is provided detachably on the hair-cutting razor host material.
- An eighth invention for solving the problems is a replaceable hair-cutting razor in which at least one blade having a cutting edge stands upright on a razor host material, and the cutting edge is facing in a right-angled direction to the upright direction of the blade, characterized in being provided detachably on a hair-cutting razor host material.
- A ninth invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, and the cutting edges of the at least two blades are facing in different directions to each other, characterized in being provided detachably on a hair-cutting razor host material.
- A tenth invention for solving the problems is characterized in that, in the eighth or ninth invention for solving the problems, the cutting edge of the blade is inclined about a reference line of the razor host material.
- An eleventh invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, the cutting edges of the at least two blades are facing in different directions to each other, and the blades are not disposed parallel to each other, characterized in being provided detachably on a hair-cutting razor host material.
- A twelfth invention for solving the problems is a replaceable hair-cutting razor in which at least two blades, each having a cutting edge, stand upright on a razor host material, the cutting edge is facing in a right-angled direction to the upright direction of the blade, the cutting edges of the at least two blades are facing in the same direction as each other, and the blades are disposed parallel to each other, characterized in being provided detachably on a hair-cutting razor host material.
- A thirteenth invention for solving the problems is characterized in that, in the eighth, ninth, tenth, eleventh, or twelfth invention for solving the problems, a control member for suppressing injuries during handling is provided adjacent to the cutting edge of the blade.
- A fourteenth invention for solving the problems is characterized in that, in the eighth, ninth, tenth, eleventh, twelfth, or thirteenth invention for solving the problems, the control member for suppressing injuries during handling doubles as a bristle.
- A fifteenth invention for solving the problems is a hairbrush integrated with a hair-cutting razor, characterized in that cutting edges of a plurality of blades standing upright on a hair-cutting razor host material integrated with bristles of the hairbrush are oriented in appropriate different directions either alternately or randomly.
- A sixteenth invention for solving the problems is a hairbrush integrated with the hair-cutting razor, in which the hair-cutting razor according to any one the first through seventh inventions for solving the problems is integrated with bristles of the hairbrush, characterized in that hair resistance during brushing is caused to differ between a cutting edge side and a blade rear side by causing a bristle density to differ between the cutting edge side and the blade rear side.
- A seventeenth invention for solving the problems is the hairbrush integrated with a hair-cutting razor according to the sixteenth invention for solving the problems, characterized in that the hair resistance during brushing is made lower on the cutting edge side than on the blade rear side by making the bristle density on the cutting edge side lower than that of the blade rear side.
- An eighteenth invention for solving the problems is the hairbrush integrated with a hair-cutting razor according to the sixteenth or seventeenth invention for solving the problems, characterized in that the hair-cutting razor integrated with the hairbrush is detachable and replaceable relative to the brush.
- The first invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- The blade body side of the hair-cutting razor is oriented toward the hair and typically moved over the scalp from the crown side of the head to the neck side.
- In this case, the cutting edges of the blades do not contact the hair in a right-angled direction, as in the background art, and instead move so as to stroke the hair. As a result, steps do not occur in the hair, and a single hair is cut diagonally from a cut starting portion to a cut end portion (see
Fig. 6 ). - In the present invention, when the razor is moved, the cutting edges of the blades are oriented downward in alignment with the length direction of the hair, and hence the hair is cut gradually as the cutting edges move so as to stroke or trim the hair (see
Figs. 4 ,5 , and6 ). - In this case, the cutting edges of the blades cut while moving along the hair, and hence the amount of hair that is cut decreases gradually from the head side to the neck side.
- In so doing, the natural growth pattern of the hair, in which the root of the hair is generally thick and the hair becomes gradually thinner toward the tip end side, is emulated, and hence an unbalanced haircut is not produced (see
Figs. 4 ,5 , and6 ). - The second invention for solving the problems is constituted as described above, and therefore shares the actions and effects of the first invention for solving the problems as well as exhibiting the following actions and effects.
- When cutting the hair on the rear surface side of the head, the hair-cutting razor may be held in the right hand and moved from the right side of the rear surface side of the head toward the left of the neck side, or conversely, the hair-cutting razor may be held in the left hand and moved in an arc movement from the left side of the rear surface side of the head toward the right of the neck side.
- In these cases, the cutting edges of the blades are preferably oriented in the movement direction.
- However, to achieve this, the razor must be manufactured in left-handed and right-handed versions, and to produce both versions separately is complicated, leading to an increase in production costs. Therefore, the inventor has disposed the cutting edges of the blades to face in different directions as described above so that the hair-cutting razor can be used in both the left and right hands.
- The third invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- In addition to the actions and effects exhibited by the first or second invention for solving the problems, the cutting edges are inclined about a reference line of the hair-cutting razor host material, which contributes to a further improvement in the hair-cutting function.
- More specifically, hair is cut along the spherical human scalp, and in this case, the cutting edges of the blades move in an arc movement having a fixed angular range.
- By inclining the cutting edges to correspond to the movement angle, an almost ideal cutting angle can be obtained, and hence the hair can be cut even more favorably.
- The fourth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- In addition to actions and effects shared with the second invention for solving the problems, the blades are not disposed parallel to each other, and therefore, when cutting short hair in particular, for example a man's hair, the hair is more likely to fly up and become caught in the cutting edge of the blade, making it easier to cut short hair.
- The fifth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- In addition to actions and effects shared with the first invention for solving the problems, the cutting edges of the blades are facing in the same direction as each other and parallel to each other, and therefore a further improvement in the cutting function can be expected.
- The sixth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- In addition to the actions and effects exhibited by the first, second, third, fourth, or fifth invention for solving the problems, a control member for suppressing injuries during handling of the hair-cutting razor is provided adjacent to the cutting edge, and therefore injuries to fingers and so on do not occur.
- The seventh invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- In addition to the actions and effects exhibited by the first, second, third, fourth, fifth, or sixth invention for solving the problems, the control member doubles as a bristle, and hence the hair can be cut by the blades while being combed by the bristles.
- The eighth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- By attaching the replaceable hair-cutting razor to the hair-cutting razor main body, actions and effects shared with the first invention for solving the problems are exhibited, and in addition, the replaceable hair-cutting razor can be replaced when the razor becomes worn. As a result, a hair-cutting razor which cuts well can be obtained easily at all times.
- The ninth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the second and eighth inventions for solving the problems can be obtained.
- The tenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the third and eighth inventions for solving the problems can be obtained.
- The eleventh invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the fourth and eighth inventions for solving the problems can be obtained.
- The twelfth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the fifth and eighth inventions for solving the problems can be obtained.
- The thirteenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the sixth and eighth inventions for solving the problems can be obtained.
- The fourteenth invention for solving the problems is constituted as described above, and therefore exhibits the following actions and effects.
- Actions and effects shared with the seventh and eighth inventions for solving the problems can be obtained.
- By integrating the hair-cutting razor of the present invention with a hairbrush, the fifteenth invention for solving the problems is capable of achieving actions and effects whereby a desired haircut can be performed at the same time as a brushing operation.
- The sixteenth invention for solving the problems basically exhibits similar actions and effects to those of the fifteenth invention for solving the problems, but by making the bristle density different to the front and rear of the cutting edges, which are oriented in a fixed direction, it is possible to achieve actions and effects whereby a hair-cutting operation can be performed more smoothly.
- By making the bristle density on the front side of the cutting edges lower than the bristle density on the rear side, the seventeenth invention for solving the problems is capable of achieving actions and effects whereby a hair-cutting operation can be performed smoothly and a finished hairstyle achieved by brushing can be improved.
- When the hair-cutting razor of the present invention is integrated with a hairbrush, the eighteenth invention for solving the problems is capable of achieving actions and effects whereby the hair-cutting razor can be replaced easily at any time when the cutting edges become blunt. As a result, the required cutting performance can be secured continuously.
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Fig. 1 is a perspective view of a hair-cutting razor according to a first embodiment of the present invention; -
Fig. 2 is a perspective view of another hair-cutting razor according to the first embodiment of the present invention; -
Fig. 3 is an enlarged side view showing the main parts of a hair-cutting razor according to an embodiment of the present invention; -
Fig. 4 is an enlarged illustrative view showing a state of use of the hair-cutting razor according to an embodiment of the present invention; -
Fig. 5 is an enlarged illustrative view showing a state of use of the hair-cutting razor according to an embodiment of the present invention; -
Fig. 6 is an enlarged illustrative view showing a state in which hair is cut by the hair-cutting razor according to an embodiment of the present invention; -
Fig. 7 is a perspective view showing a hair-cutting razor according to a second embodiment of the present invention; -
Fig. 8 is a perspective view showing a hair-cutting razor according to a third embodiment of the present invention; -
Fig. 9 is a perspective view showing another hair-cutting razor according to the third embodiment of the present invention; -
Fig. 10 is a perspective view showing a hair-cutting razor according to a fourth embodiment of the present invention; -
Fig. 11 is a perspective view showing a hair-cutting razor according to a fifth embodiment of the present invention; -
Fig. 12 is a perspective view showing a hair-cutting razor according to a sixth embodiment of the present invention; -
Fig. 13 is a perspective view showing a replaceable hair-cutting razor according to an embodiment of the present invention; -
Fig. 14 is a perspective view showing a state of use of the replaceable hair-cutting razor according to an embodiment of the present invention; -
Fig. 15 is an enlarged sectional view showing the main parts ofFig. 13 ; -
Fig. 16 is an enlarged front view showing the main parts of the background art; -
Fig. 17 is another enlarged front view showing the main parts of the background art; -
Fig. 18 is an enlarged illustrative view showing a state of use of the background art; -
Fig. 19 is an enlarged front view showing a state in which hair is cut by a hair-cutting razor according to the background art; and -
Fig. 20 is a view showing an example of a state of implementation when the hair-cutting razor of the present invention is integrated with a hairbrush. - A hair-cutting
razor 10 and a replaceable hair-cuttingrazor 20 according to embodiments of the present invention will now be described with reference to the drawings. - The hair-cutting
razor 10 of a first embodiment will now be described. - In this example,
blades 12 each comprising acutting edge 12a are fixed onto a hair-cuttingrazor host material 14. Theblades 12 are arranged in parallel, and therespective cutting edges 12a of the fiveblades 12 are facing in the same direction such that thecutting edges 12a are oriented toward the left side of the drawing (seeFig. 1 ). - Note that the example shown in
Fig. 1 is a preferred example of a case in which hair on the rear scalp surface of a head T is cut from the right side to the neck side, and hence is for right-handed use, as will be described in more detail below. - Conversely, in the example shown in
Fig. 2 , thecutting edges 12a are oriented toward the right side of the drawing, i.e. in symmetry with the example shown inFig. 1 , and hence this example is for left-handed use. - These examples are basically constituted such that the
blades 12 comprising thecutting edges 12a stand upright on the hair-cuttingrazor host material 14, and thecutting edges 12a are facing in a right-angled direction to the upstanding direction of theblades 12. - In this type of
razor 10, ahandle 16 is typically provided at one end of the hair-cuttingrazor host material 14, but thehandle 16 is merely provided for convenience, and is not a requirement of the present invention. - In principle, a
single blade 12 comprising acutting edge 12a is sufficient, but preferably two or more, and up to about five, as shown inFigs. 1 and 2 ,upstanding blades 12 are provided. - To describe the constitution of the
blade 12 in further detail with reference toFig. 3 , the thin plate form,rectangular blade 12 is inserted into aplastic blade cover 12b having a substantially U-shaped cross-section such that thecutting edge 12a is exposed to an open side of thecover 12b. - As is well-known, the
blade 12 is made of metal, and when used to cut hair on the scalp, care is required to reduce danger. - Hence, in the present invention, the majority of the periphery of the
blade 12, excluding thecutting edge 12a side which is required to cut hair, is covered by theblade cover 12b and the hair-cuttingrazor host material 14 to prevent injury to the human scalp caused by careless contact with theblade 12 during use. - Further, as described above, the
blade 12 typically takes a thin plate form and is therefore undeniably lacking in strength. Hence, by inserting theblade 12 into theblade cover 12b, an increase in the strength of theblade 12 is achieved. - Moreover, when plastic is employed for the
blade cover 12b, the material qualities thereof may help to prevent injury to the scalp during use of therazor 10. - As shown in
Fig. 3 , threeprotrusions 12c are provided on thecover 12b of theblade 12 at fixed intervals so as to protrude slightly beyond the line of extension of thecutting edge 12a of theblade 12 in a right-angled direction to the line of extension of thecutting edge 12a. - By means of these
protrusions 12c, the strength of thecover 12b can be increased, and by providing theprotrusions 12c at fixed intervals, hair H that is led betweenadjacent blades 12 during cutting can be separated by theprotrusions 12c. - Accordingly, the hair H does not become concentrated in a local portion of the
cutting edge 12a, and therefore concentrated stress is not applied to thecutting edge 12a. As a result, the hair H can be cut smoothly, and no load is placed on thecutting edge 12a. - A pin-shaped object standing upright beside the
cutting edge 12a of theblade 12 is acontrol member 18 for protecting human fingers and so on during handling of therazor 10. - The
control member 18 is preferably positioned approximately 5mm, for example, to the left and right of a center line of thecutting edge 12a so as not to damage the hair H that is led to thecutting edge 12a during cutting of the hair H. - The actions and effects of the first embodiment of the present invention will now be described (see
Figs. 4 ,5 , and6 ). - The
blade 12 side of the hair-cuttingrazor 10 is oriented toward the hair H and generally moved along the scalp T from the crown of the head to the neck side. - In this case, the
cutting edge 12a of theblade 12 does not contact the hair H in a right-angled direction, as in the background art, and instead, thecutting edge 12a moves along the hair H so as to stroke the hair H. - To describe this point in further detail, by moving the
razor 10, thecutting edge 12a of theblade 12 faces the neck side of the body so as to follow the length direction of the hair H, and as therazor 10 moves, the hair H is gradually cut in the direction of an arrow Y inFigs. 4 and5 along the hair H and so as to stroke the hair H. - In this case, the
cutting edge 12a of theblade 12 moves in an acute angle direction relative to the hair H, unlike theblade body 32 of the background art, which moves in a right-angled direction to the hair H. - The
cutting edge 12a, which moves in an acute angle direction, then moves gradually from the hair H positioned on the top of the head toward the hair H positioned on the neck side, and since the movement direction of thecutting edge 12a is an acute angle direction nearly parallel to the hair H in this case, thecutting edge 12a never moves in a right-angled direction relative to the hair H. As a result, the hair H can be trimmed such that tapered hair H is obtained, in contrast to thecutting edge 34a of the background art which moves in a right-angled direction to the hair H, and hence an attractive hairstyle can be obtained (seeFig. 6 ). - Accordingly, no difference occurs between the amount of hair in the cut portion and the uncut portion of the hair H, and as a result, an even haircut can be performed.
- A second embodiment will now be described.
- The second embodiment will be described with reference to
Fig. 7 . - This example does not differ greatly from the first embodiment in terms of the essence of the present invention, and therefore constitutions which differ in principle will be described, while the above description of the first embodiment will be incorporated in relation to shared constitutions.
- Six of the
blades 12, each comprising thecutting edge 12a, stand upright in parallel on the hair-cuttingrazor host material 14 provided with thehandle 16. - In the first embodiment, all of the
cutting edges 12a of theblades 12 face the same direction, but in this example, as shown in the drawing, thecutting edges 12a of the sixblades 12 are disposed such thatadjacent cutting edges 12a are oriented in different directions. - The disposal directions of the
cutting edges 12a differ from each other by 180 degrees in the illustrated example, but this difference is not limited to 180 degrees. - The pin-shaped
control member 18 is provided beside thecutting edge 12a of theblade 12, as in the first embodiment. - This example is advantaged in that the
cutting edges 12a of theblades 12 are provided in different directions to each other, and therefore therazor 10 can be used with both the left and right [hands], as is evident from the above description of the first embodiment. - A third embodiment will now be described.
- This example does not differ greatly from the first embodiment in terms of the essence of the present invention, and therefore constitutions which differ in principle will be described, while the above description of the first embodiment will be incorporated in relation to shared constitutions.
- To describe this example with reference to
Figs. 8 and9 , in the first embodiment theblades 12 are not inclined, but provided in parallel, whereas in this embodiment, thecutting edges 12a of theblades 12 are oriented in the same direction and divided into those which are inclined to the upper right of the drawing about a reference line L, and those which are inclined to the upper left of the drawing about the reference line L (seeFigs. 8 and9 ). - Hence, this embodiment is applicable for use with both the left and right hands, similarly to the first embodiment'.
- The angle of the
cutting edge 12a relative to the hair H during use of the hair-cuttingrazor 10 differs considerably according to the preferences of the user, the combing location of the hair H, and the cutting location of the hair H. - The angle relative to the hair H may also differ according to differences in the dominant arm.
- Taking these differences in use conditions into account, the inventor has researched a use angle through experiment.
- It was determined as a result of this research that when the dominant arm is the right arm, for example, and the hair-cutting
razor 10 is moved diagonally over the hair H on the right side of the back of the head from the right side toward the neck in order to comb and cut the hair H, the angle of incline of thecutting edge 12a of theblade 12 is preferably within a range of 10 to 80 degrees, and more preferably approximately 60 degrees, toward the upper left of the drawing relative to the reference line L of the hair-cutting razor host material 14 (seeFig. 8 ). - Meanwhile, when the dominant arm is the left arm and the hair H on the left side of the back of the head is combed and cut, the angle of incline is preferably symmetrical to that described above, i.e. within a range of 100 to 170 degrees, and more preferably 120 degrees, toward the upper right of the drawing relative to the reference line L of the hair-cutting razor host material 14 (see
Fig. 9 ). - A fourth embodiment will now be described.
- This example does not differ greatly from the first embodiment in terms of the essence of the present invention, and therefore constitutions which differ in principle will be described, while the above description of the first embodiment will be incorporated in relation to shared constitutions.
- To describe this example with reference to
Fig. 10 , in the first embodiment thecutting edges 12a of theblades 12 are provided on only one side, but in this example, thecutting edges 12a are provided on both sides of theblades 12, and hence user-friendliness is taken into account regardless of whether the left or right hand is used. - All other constitutions are similar to those of the first embodiment.
- A fifth embodiment will now be described.
- This example does not differ greatly from the first embodiment in terms of the essence of the present invention, and therefore constitutions which differ in principle will be described, while the above description of the first embodiment will be incorporated in relation to shared constitutions.
- To describe this example with reference to
Fig. 11 , in the first embodiment thecutting edges 12a of the blades 1ii are facing in both directions and theblades 12 are disposed parallel to each other, whereas in this example, as shown in the drawing, six blades 12n1, 12n2, 12n3, 12n4, 12n5, and 12n6 are not disposed parallel to each other. - In other words, the respective cutting edges a of the six adjacent blades 12n are oriented differently to each other when seen from above.
- As shown in
Fig. 11 , the six blades 12n1, 12n2, 12n3, 12n4, 12n5, and 12n6 are disposed from the left end to the right end of the drawing such that thecutting edge 12a of the first blade 12n1 (left end) is positioned on the upper side of the drawing, while thecutting edge 12a of the second blade 12n2 is oriented toward the lower side of the drawing. The blade 12n2 also protrudes toward the upper side of the drawing. In sequence thereafter, thecutting edge 12a of the third blade 12n3 is positioned on the upper side of the drawing together with thecutting edge 12a of the first blade 12n1, while the fourth blade 12n4 is set in the same orientation as the second blade 12n2. Thereafter, the configuration described above is repeated such that the fifth blade 12n5 and sixth (right end) blade 12n6 are disposed in a receding-protruding, or in other words non-parallel, fashion. - With this configuration, the
aforementioned control member 18, such as a safety pin or the like, is preferably provided next to therespective cutting edges 12a of the first blade 12n1 positioned at the left end of the drawing and the sixth blade 12n6 positioned at the right end of the drawing to suppress injuries to the fingers and so on during handling of therazor 10. - Meanwhile, the
respective cutting edges 12a of the blades 12n2, n3, n4, n5 positioned between the two blades 12nl, n6 are positioned on the opposite inner side of thecutting edges 12a of the respective adjacent blades 12nl, 12n2, n3, n4, n5, n6. - Since the
cutting edges 12a are positioned on the opposite inner side of thecutting edges 12a of the respective adjacent blades 12n1, 12n2, n3, n4, n5, n6, fingers and so on interfere with the opposite side of therespective cutting edges 12a of the blades 12n1, 12n2, n3, n4, n5, n6 during handling of therazor 10, and therefore thecontrol member 18 does not necessarily have to be provided on any of thecutting edges 12a except those of the two end blades 12n1, n6. - Particularly when the blades 12n1, 12n2, n3, n4, n5, n6 are respectively inserted into the
aforementioned blade cover 12b, fingers and so on interfere with theblade cover 12b when handling therazor 10, and hence there is no danger of injury. - A sixth embodiment will now be described.
- This example does not differ greatly from the first embodiment in terms of the essence of the present invention, and therefore constitutions which differ in principle will be described, while the above description of the first embodiment will be incorporated in relation to shared constitutions.
- To describe this example with reference to
Fig. 12 , in the first embodiment so-called bristles do not stand upright around theblades 12, but in this embodiment, a large number of thecontrol members 18, doubling as bristles, are provided in an upright manner adjacent to thecutting edges 12a. - The configuration of the
blades 12 shown inFig. 12 is symmetrical with that of the fifth embodiment described above, and no limitations are placed thereon. - In this specification, the term "bristle" may refer to the bristles of a brush, the bristles of a comb, and so oniii.
- The bristles typically take an elongated pin form, but may take any form, such as a form having a circular transverse section, other than an angular form which may injure fingers and so on.
- Note that when the
control members 18 double as bristles, the hair H can be cut while being combed. - Next, another embodiment of the present invention will be described.
- In the example to be described below, a replaceable hair-cutting
razor 20 is provided detachably on the hair-cuttingrazor host material 14 in anticipation of use-related wear to theblades 12 of the hair-cuttingrazor 10. - The replaceable hair-cutting
razor 20 is described in detail inFigs. 13 to 15 . The replaceable hair-cuttingrazor 20 differs from the hair-cuttingrazor 10, in which theblades 12 are attached non-detachably to the hair-cuttingrazor host material 14, merely in that instead of attaching theblades 12 to the hair-cuttingrazor host material 14, theblades 12 andcontrol members 18 are provided on arazor host material 22. Accordingly, constitutions shared with the hair-cuttingrazor 10 are incorporated herein, and description thereof has been omitted. - The constitution of the
razor host material 22 to and from which the hair-cuttingrazor 10 can be attached and detached will also be described (seeFigs. 13 ,14 ,15 ). - In the hair-cutting
razor 10, theblades 12 stand upright on therazor host material 22, and thecontrol members 18 stand upright adjacent to the blades 12 (seeFigs. 13 ,14 ). - In this embodiment, five
blades 12 are provided, but as in the hair-cuttingrazor 10 described above, the number of blades may be set freely in accordance with requirements. - The hair-cutting
razor 10 is provided detachably in afitting hole 24 formed in therazor host material 22, and hence theblade host material 22 is provided in accordance with the shape of the fitting hole 24 (seeFigs. 13 to 15 ). - More specifically, one side of the
host material 22 is formed with a wave-shaped undulatingsurface 22a, and one side of thefitting hole 24 of the hair-cuttingrazor host material 14 is formed with a wave-shaped undulating surface which corresponds to the wave-shaped undulatingsurface 22a on one side of the host material 22 (seeFig. 14 ). - Further,
stoppers host material 22 in the lengthwise direction. - Meanwhile, engaging stepped
portions stoppers fitting hole 24 on the surface side of the hair-cutting razor host material 14 (seeFig. 15 ). - Hence, by orienting the
blade 12 side of the hair-cuttingrazor 10 downward from the surface of the hair-cuttingrazor host material 14, theblade host material 22 is fitted into thefitting hole 24 of the hair-cuttingrazor host material 14. - The wave-shaped undulating
surface 22a of thehost material 22 is fitted into the wave-shaped undulating surface of thefitting hole 24 in the hair-cuttingrazor host material 14, and thestoppers host material 22 are supported by the engaging steppedportions razor host material 14. As a result, the replaceable hair-cuttingrazor 20 can be attached securely and unmovingly to the hair-cuttingrazor host material 14. Further, agrip 22c is provided on thehost material 22 to assist removal of the replaceable hair-cutting razor 20 (seeFig. 13 ). - Hence, by fitting the
host material 22 of the replaceable hair-cuttingrazor 20 into thefitting hole 24 of the hair-cuttingrazor host material 14, the hair-cuttingrazor 10, in which theblades 12 comprising thecutting edges 12a stand upright on the hair-cuttingrazor host material 14, can be obtained (seeFigs. 13 ,14 ). - The actions and effects of the hair-cutting razor attached with the replaceable hair-cutting
razor 20 are identical to the actions and effects of the hair-cuttingrazor 10 described above. - When the
blades 12 become worn, the replaceable hair-cuttingrazor 20 can be removed from the hair-cuttingrazor host material 14 and a new replaceable hair-cuttingrazor 20 can be attached. As a result, a hair-cutting razor exhibiting an excellent cutting function can be obtained easily. - A further embodiment of the present invention will now be described.
- As is evident from the representative example in
Fig. 20 , in this embodiment the hair-cuttingrazor 10 of the present invention is provided integrally with the bristles of a hairbrush, and in particular, the density of the bristles differs on the front side and rear side of the cutting edges. - More specifically, on the side having a relatively low bristle density, little resistance is generated during actual hair brushing and the like, and hence the brush moves smoothly. Meanwhile, on the side having a high bristle density, the brushing resistance increases relatively, enabling fine, careful brushing, and hence a favorable finish can be realized.
- The side on which the bristle density is to be relatively increased, i.e. either the front or the rear of the cutting edges of the hair-cutting
razor 10, may be selected arbitrarily in accordance with the purpose of the hair-cuttingrazor 10. Note, however, that in order to obtain an actual sense of the relative difference in the bristle density during hair cutting and brushing, the relative difference in the bristle density should be at least 5%. Preferably, the bristle density difference should be set between 10 and 30%. - In the present invention, the bristle density on the front side of the cutting edges is preferably set to be relatively lower than the bristle density on the rear side in order to perform hair cutting and brushing efficiently. The reason for this is that before cutting the hair, the hair need only be arranged roughly at the cutting edges, whereas after the hair is cut, the hairstyle is preferably finished through fine brushing.
- According to the present invention described above, an appropriate and safe hair-cutting operation can be performed easily and speedily, enabling even a person without specialist skills to perform a desired hair-cutting operation reliably. Moreover, a person possessing specialist skills can perform a fine hair-cutting operation efficiently without the complicated work required conventionally, and hence the present invention may bring much new demand to the industry. Accordingly, the present invention is considered to possess excellent industrial applicability.
Claims (12)
- A hair-cutting razor (10, 20) comprising:- a hair-cutting razor host material (14, 22) having a blade side used to be oriented toward a hair (H) and generally to be moved along a scalp (T) of a user, characterized by- at least two blades (12) each comprising a cutting edge (12a) standing upright on the blade side of the hair-cutting razor host material (14, 22),wherein the cutting edges (12a) are facing in a right-angled direction to the upright direction of the blades (12).
- The hair-cutting razor (10, 20) according to claim 1, wherein the cutting edges (12a) of the at least two blades (12) are facing in different directions to each other.
- The hair-cutting razor (10, 20) according to claim 1 or 2, characterized in that the cutting edges (12a) of the blades (12) are inclined about a reference line of the hair-cutting razor host material (14, 22).
- The hair-cutting razor (10, 20) according to claim 2, characterized in that the blades (12) are not disposed parallel to each other.
- The hair-cutting razor (10, 20) according to claim 1, characterized in that the cutting edges (12a) of the at least two blades (12) are facing in the same direction as each other, and the blades (12) are disposed parallel to each other.
- The hair-cutting razor (10, 20) according to one of the proceeding claims, characterized in that a control member (18) for suppressing injuries during handling is provided adjacent to the cutting edges (12a) of the blades (12).
- The hair-cutting razor (10, 20) according to claim 6, characterized in that the control member (18) for suppressing injuries during handling acts further as a bristle.
- A replaceable hair-cutting razor (20) characterized in that the hair-cutting razor (20) according to any one of claims 1 to 7 is provided detachably on a hair-cutting razor main body (14).
- A hairbrush (25) integrated with a hair-cutting razor (10, 20) according to any one of claims 1 to 7, characterized in that cutting edges (12a) of a plurality of blades (12) standing upright on a hair-cutting razor host material (14) integrated with bristles of the hairbrush (25) are oriented in appropriate different directions either alternately or randomly.
- A hairbrush (25) integrated with the hair-cutting razor (10, 20) according to any one of claims 1 through 7, being integrated with bristles of the hairbrush, characterized in that hair resistance during brushing is caused to differ between a cutting edge side and a blade rear side by causing a bristle density to differ between the cutting edge side and the blade rear side.
- The hairbrush (25) integrated with a hair-cutting razor (10, 20) according to claim 10, characterized in that the hair resistance during brushing is made lower on the cutting edge side than on the blade rear side by making the bristle density on the cutting edge side lower than that of the blade rear side.
- The hair-cutting razor according to claim 10 or claim 11, characterized in that the hair-cutting razor (20) integrated with the hairbrush (25) is detachable and replaceable relative to the brush.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003398811A JP2006246905A (en) | 2003-11-28 | 2003-11-28 | Razor for hair cut and replacement razor for hair cut |
PCT/JP2004/017972 WO2005051614A2 (en) | 2003-11-28 | 2004-11-26 | Razor for hair cut and replacement razor for hair cut |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1795317A2 EP1795317A2 (en) | 2007-06-13 |
EP1795317A4 EP1795317A4 (en) | 2009-10-28 |
EP1795317B1 true EP1795317B1 (en) | 2013-10-02 |
Family
ID=34631580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04819482.3A Expired - Fee Related EP1795317B1 (en) | 2003-11-28 | 2004-11-26 | Razor for hair cut and replacement razor for hair cut |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1795317B1 (en) |
JP (2) | JP2006246905A (en) |
CN (2) | CN101372106B (en) |
WO (1) | WO2005051614A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106263482A (en) * | 2016-08-26 | 2017-01-04 | 李银锋 | A kind of Portable multifunctional rinsing apparatus |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2610393A (en) * | 1951-05-28 | 1952-09-16 | Philo L Hammond | Haircutting and collecting device |
US3990461A (en) * | 1975-06-11 | 1976-11-09 | Lawrence Peska Associates, Inc. | Razor cut comb brush |
US4020549A (en) * | 1975-11-05 | 1977-05-03 | Syd Edwards | Hair cutter comb |
FR2457088B1 (en) * | 1979-05-22 | 1985-10-11 | Molaro Bernard | IMPROVED HAIR BRUSH FOR HAIR CUTTING |
JPS60103402A (en) * | 1983-11-10 | 1985-06-07 | Hitachi Ltd | Multiplexed controller |
JPS60103402U (en) * | 1983-12-20 | 1985-07-15 | 酒井 義盛 | Comb with cutter |
US6161288A (en) * | 1993-02-22 | 2000-12-19 | Andrews; Edward A. | Four blade bi-directional razor structure with flexible guard system |
CN2195881Y (en) * | 1994-06-17 | 1995-05-03 | 蔡占同 | Improved structure of hair comb |
US5794348A (en) * | 1996-10-01 | 1998-08-18 | Scott; Mike | Clipper comb |
JPH10263219A (en) * | 1997-03-26 | 1998-10-06 | Adachi Kogyo:Kk | Spare blade for blade exchangeable razor |
CN2357567Y (en) * | 1998-12-30 | 2000-01-12 | 刘士民 | Comb type hair trimmer |
JP3742990B2 (en) * | 2001-12-21 | 2006-02-08 | フェザー安全剃刀株式会社 | Razor for haircut |
US7243428B2 (en) * | 2002-10-25 | 2007-07-17 | Japan Lanka Trading Co., Ltd. | Hair brush and replaceable cutting unit for hair brush |
-
2003
- 2003-11-28 JP JP2003398811A patent/JP2006246905A/en active Pending
-
2004
- 2004-11-26 EP EP04819482.3A patent/EP1795317B1/en not_active Expired - Fee Related
- 2004-11-26 CN CN2008102117739A patent/CN101372106B/en not_active Expired - Fee Related
- 2004-11-26 WO PCT/JP2004/017972 patent/WO2005051614A2/en active Application Filing
- 2004-11-26 CN CNB200480009447XA patent/CN100460170C/en not_active Expired - Fee Related
- 2004-11-26 JP JP2005515846A patent/JP4020404B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2005051614A2 (en) | 2005-06-09 |
EP1795317A2 (en) | 2007-06-13 |
CN100460170C (en) | 2009-02-11 |
JPWO2005051614A1 (en) | 2007-12-06 |
JP4020404B2 (en) | 2007-12-12 |
CN1771116A (en) | 2006-05-10 |
EP1795317A4 (en) | 2009-10-28 |
WO2005051614B1 (en) | 2005-10-06 |
CN101372106B (en) | 2012-06-13 |
WO2005051614A3 (en) | 2005-08-18 |
CN101372106A (en) | 2009-02-25 |
JP2006246905A (en) | 2006-09-21 |
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