JP2008049089A - Razor blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a razor blade which has improved adhesion to a skin surface and achieves a shaving operation in multiple directions. <P>SOLUTION: The razor blade is composed by planarly arranging a linear blade member 1 formed linearly so as to be provided with elasticity and provided with a blade edge part 2 along the axial direction so that the blade edge direction of the blade edge part 2 is turned to two or more directions. When the elastic linear blade member 1 is pressed to the skin, the linear blade member 1 is bent following the skin surface and the entire blade edge part 2 is simultaneously stuck to the entire skin surface in a wide range. Also, a shaving direction is not limited to one direction and reciprocating shaving is made possible as well. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a razor blade used for shaving body hair.

  FIG. 9 shows a conventional razor tool. As shown in the figure, this type of razor tool has a razor blade 51 for shaving body hair at the tip of a handle 50 provided in a rod shape for a user to hold with one hand, and a T-shape. In general, it is supported so that As the razor blade 51, a thin plate-shaped blade member is used which is formed in a wedge shape so that the width becomes narrower as it approaches the tip edge, and the tip of the razor blade has a straight edge in plan view. The portion 52 is formed.

  By the way, in the above-mentioned conventional razor tool, in order to improve the adhesion to the skin surface, the material and plate thickness of the razor blade 51 are devised and provided to be deformable to some extent by the pressing force on the skin surface. Was also provided. However, as described above, the razor blade 51 formed in a thin plate shape is still highly rigid, and there is a problem that there is a limit to improving the adhesion to the skin surface. Further, the razor blade 51 has a problem that the shaving operation is limited to one direction because the straight edge portion 52 is formed so as to face only one direction.

  On the other hand, as a razor blade enabling shaving operation in a plurality of directions, a structure in which a large number of openings are formed in the main body of a razor blade having a thin plate shape, and a blade edge is formed at the periphery of the opening. It has also been proposed (see Patent Document 1). According to this structure, it is possible to shave the body hair in both directions in the reciprocating operation.

However, even in the razor blade provided with this opening, the base is also a thin plate-like blade member, so that it has high rigidity, and there is a problem in terms of adhesion to the skin surface.
Japanese Patent Laid-Open No. 11-164773

  This invention is invented in view of the said problem, Comprising: While improving the adhesiveness to a skin surface, it makes it a subject to provide the razor blade which enabled the shaving operation | movement in multiple directions. .

  In order to solve the above-mentioned problems, the razor blade of the present invention is linearly formed so as to have elasticity, and the linear blade member 1 having the blade edge portion 2 along the axial direction thereof is used as the blade edge of the blade edge portion 2. It shall be arranged in a planar shape so that the directions are directed in a plurality of directions. By using the razor blade having the above-described configuration, when the linear blade member 1 having elasticity is pressed against the skin, the linear blade member 1 bends following the skin surface, and the entire blade edge portion 2 is spread over the entire skin surface. It can be made to adhere at the same time. In addition, since the blade edge portion 2 of the linear blade member 1 is arranged so that the blade edge direction faces a plurality of directions, the shaving direction is not limited to one direction, and reciprocating shaving is also possible.

  The linear blade member 1 preferably has a plurality of cutting edge portions 2 along the axial direction. By doing in this way, the cut chance which cut | disconnects a body hair can increase, and the frequency | count of shaving until a finish can be reduced. In addition, the degree of freedom in the shaving direction is further increased.

  The linear blade member 1 is also preferably formed as a single continuous body. By doing in this way, the linear blade member 1 and the member for supporting this can also be reduced, and the number of parts and the assembly process can be simplified.

  It is also preferable that the linear blade member 1 has a curved shape that bends in a zigzag manner. By doing so, the length of the blade edge per unit length can be increased, and the degree of freedom in the blade edge direction is also improved, so the shaving direction is also increased.

  It is also preferable that the linear blade member 1 has a coil shape. Thus, by making it coil shape, the linear blade member 1 has high elasticity, and the followable | trackability to a skin surface improves further.

  It is also preferable that the linear blade member 1 has a spiral shape whose diameter is changed stepwise. By making such a spiral shape, the cutting edge can be aligned along a concave curved skin surface such as a chin or armpit. Moreover, since the blade edge | tip part 2 currently formed in the linear blade member 1 becomes a structure which orient | assigned the blade edge | direction to all radial directions centering on the center axis | shaft of a helix, even if it moves a razor blade in any direction, body hair Can be cut, and reciprocal shaving is also possible.

  Moreover, the said linear blade member 1 comprises several circular shape from which a diameter differs, and it is also preferable that each linear blade member 1 is couple | bonded by the crosspiece member 3, and the whole is formed in the dome shape. . By forming the dome shape in this way, the cutting edge can be placed along a concave curved skin surface such as a chin or armpit. In addition, since the blade edge portion 2 formed on each circular linear blade member 1 has a structure in which the blade edge direction is directed in all radial directions around the central axis of the dome, the razor blade can be inserted in any direction. Even if it is moved, the hair can be cut and reciprocal shaving is also possible.

  Each configuration described above can be appropriately combined without departing from the gist of the present invention.

  INDUSTRIAL APPLICATION While improving adhesiveness to a skin surface, this invention has an effect that the shaving operation | movement in multiple directions can be enabled.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIG. 1 shows a razor tool using the razor blade of the first example in the embodiment of the present invention. This razor blade uses a linear blade member 1 formed in a linear shape so as to have elasticity. In this example, the linear blade member 1 is provided as a plurality of circular members having different diameters. In each linear blade member 1 having a circular shape, a blade edge portion 2 is formed over the entire outer peripheral edge.

  These linear blade members 1 having a circular shape are concentrically connected via a plurality of crosspiece members 3 having elasticity, and thus are arranged in a planar shape as a whole. The outermost linear blade member 1 is fixed to the tip of the handle portion 4 having a rod shape, and the entire linear blade member 1 is supported by the handle portion 4 via each crosspiece member 3.

  1 (b) and 1 (c) show the cross-sectional shape of the linear blade member 1, and in this way, the whole is formed so as to form a rectangular shape in a cross-sectional view orthogonal to the axial direction, and the four corners thereof are formed. It is set as the shape which protruded the blade edge | tip part 2 toward the direction (namely, radial direction) away from the center of the linear blade member 1 which comprises circular shape from the end in a part. Therefore, the linear blade member 1 as a whole can have sufficient elasticity, and can secure rigidity in the cutting direction in which a load is applied when cutting the hair. The rigidity here is positively dependent on the second moment of section.

  Further, a plurality of crosspiece members 3 are arranged at equal intervals in the circumferential direction between the adjacent linear blade members 1. However, the arrangement between the linear blade members 1 is shifted in the circumferential direction so that the crosspiece members 3 are not continuously located in the radial direction.

  In the razor tool using the razor blade of this example configured as described above, each linear blade member 1 having a concentric shape follows the skin surface by grasping the handle portion 4 and applying the entire razor blade to the skin surface. Will bend and adhere to the entire skin surface at the same time. And in the said razor blade, since the blade edge | tip part 2 of each linear blade member 1 which comprises concentric circle shape has the structure which orient | assigned the blade edge | direction direction to all the directions in a plane, in which direction on this plane razor Even if the blade is moved, the hair can be cut and reciprocal shaving is also possible. Here, in the razor blade, the cutting edge portion 2 of each linear blade member 1 is formed in a circular shape along the axial direction of the linear blade member 1, and the blade span length that can be regarded as a straight line is extremely short. For this reason, the skin is prevented from being cut by skidding regardless of the direction of movement.

  In addition, the shape and arrangement | positioning of the linear blade member 1 are not limited to the example of illustration, If it is arrange | positioned planarly so that the blade edge | tip part 2 formed along the axial direction may face a plurality of directions, it is a straight line. Or other shapes such as a curve or a lattice shape. The term “multiple directions” as used herein means to include all directions exceeding one direction, and thus may be two directions facing in opposite directions, or three or more directions different from each other in a plane. Of course, all directions may be used as in this example.

  Next, the razor blade of the 2nd example in embodiment of this invention is demonstrated based on FIG. Since the basic configuration of this example is the same as that of the first example described above, the same reference numerals are given to the same components as those of the first example, and detailed description thereof is omitted, which is different from the first example. Only the detailed configuration will be described in detail below.

  In this example, in addition to the outer peripheral edge side of each linear blade member 1 having a circular shape, the blade edge portion 2 is formed over the entire periphery on the inner peripheral edge side. That is, the said linear blade member 1 has a pair of blade edge | tip part 2 along an axial direction, and suppresses the frequency | count of shave until a finish by inevitably increasing the cutting chance at the time of cutting body hair. Is possible.

  2 (b) and 2 (c) show the cross-sectional shape of the linear blade member 1 of this example. In this way, the whole is formed in a rectangular shape in cross-sectional view, and two adjacent corners are formed. A pair of inner and outer cutting edge portions 2 are projected from the end in a direction away from the center of the circular linear blade member 1 (ie, in the radial direction) and in a direction approaching the center (ie, in the central direction). Therefore, while ensuring sufficient elasticity for the entire linear blade member 1, it is possible to ensure even higher rigidity in the cutting direction in which a load is applied when cutting the hair. For example, even when the linear blade member 1 is formed in a straight line that is the simplest shape, reciprocating shaving is possible if the blade edge portion 2 is projected in the opposite direction.

  Next, the razor blade of the 3rd example in embodiment of this invention is demonstrated based on FIG. Since the basic configuration of this example is the same as that of the second example described above, the same reference numerals are given to components that are the same as those of the second example, and detailed description thereof is omitted, which is different from the second example. Only the detailed configuration will be described in detail below.

  In this example, a plurality of linear blade members 1 are not provided and connected as in the second example, but the whole is formed in a spiral shape to form the linear blade member 1 as one continuous body. It is. The linear blade member 1 having a spiral shape has an outermost peripheral end fixed to the handle portion 4, and a blade edge portion 2 is formed over the entire circumference of the inner peripheral edge and the outer peripheral edge.

  In the razor tool using the above-mentioned razor blade, the linear blade member 1 having a spiral shape bends following the skin surface by gripping the handle portion 4 and applying the entire razor blade to the skin surface. It will be in close contact with the entire surface at the same time. In the razor blade, each blade edge portion 2 on the inner peripheral edge side and the outer peripheral edge side of the spiral linear blade member 1 has a structure in which the blade edge direction is directed in all directions in the plane. The hair can be cut by moving the razor blade in any direction, and reciprocating shaving is also possible.

  Next, the 4th example razor blade in embodiment of this invention is demonstrated based on FIG. Since the basic configuration of this example is the same as that of the second example described above, the same reference numerals are given to components that are the same as those of the second example, and detailed description thereof is omitted, which is different from the second example. Only the detailed configuration will be described in detail below.

  In this example, the linear blade member 1 is not formed in a circular shape as in the second example, but is formed in a substantially triangular shape by connecting linear portions bent in a zigzag shape. A pair of similar triangular blade members 1 are provided inside and outside, and each of the wire blade members 1 is fixed to the distal end side of the handle portion 4.

  In the razor tool using the razor blade, each linear blade member 1 having a zigzag triangular shape is bent following the skin surface by gripping the handle portion 4 and applying the entire razor blade to the skin surface. It will be in close contact with the entire skin surface at the same time. In the razor blade, each of the edge portions 2 on the inner peripheral edge side and the outer peripheral edge side of the linear blade member 1 having a zigzag shape has a structure in which the blade edge direction is directed in all directions in the plane. The hair can be cut by moving the razor blade in any direction, and reciprocating shaving is also possible. In addition, by bending the linear blade member 1 in a zigzag manner, the length of the blade edge per unit length is increased and the degree of freedom in the blade edge direction is also improved.

  Next, the razor blade of the 5th example in the embodiment of the present invention is explained based on FIG. Since the basic configuration of this example is the same as that of the second example described above, the same reference numerals are given to components that are the same as those of the second example, and detailed description thereof is omitted, which is different from the second example. Only the detailed configuration will be described in detail below.

  In this example, the linear blade members 1 are not formed in a planar shape as in the second example, but are formed as a coiled continuous body so that the linear blade members 1 are formed as a whole. The configuration is arranged in a cylindrical surface. The coiled linear blade member 1 is fixed in a ring-shaped support portion 4a extended from one end side of a handle portion 4 formed in a substantially spherical shape so that the user can grip it. .

  In the razor tool using the razor blade, the coil-shaped linear blade member 1 follows the skin surface by gripping the handle portion 4 and applying the cylindrical surface side of the razor blade forming the coil shape to the skin. Will bend and adhere well to the entire skin surface. In the razor blade, the blade edge portions 2 on both sides of the coil-shaped linear blade member 1 have a structure in which the blade edge direction is directed toward both sides of the cylindrical surface in the central axis direction (arrow direction in the drawing). Therefore, it is possible to perform reciprocal shaving. In the illustrated example, only one coiled linear blade member 1 is provided, but a plurality of similar linear blade members 1 may be provided to form a razor blade.

  Next, the razor blade of the 6th example in the embodiment of the present invention is explained based on FIG. Since the basic configuration of this example is the same as that of the second example described above, the same reference numerals are given to components that are the same as those of the second example, and detailed description thereof is omitted, which is different from the second example. Only the detailed configuration will be described in detail below.

  In this example, a plurality of linear blade members 1 are not provided and connected as in the second example, but are formed in a spiral shape with a diameter changed stepwise to form a single continuous body. A blade member 1 is formed. In the linear blade member 1 having a spiral shape, a blade edge portion 2 is formed over the entire periphery of the edge along the axial direction.

  In the razor tool using the razor blade, the linear blade member 1 having a spiral shape bends following the skin surface by grasping the handle (not shown) and applying the entire razor blade to the skin surface. Thus, it is possible to adhere well to the entire skin surface over a wide range, and for example, the cutting edge can be placed along a concavely curved skin surface such as a chin or armpit. And in the said razor blade, the blade edge | tip part 2 provided in the perimeter of the edge of the linear blade member 1 which comprises a spiral becomes a structure which orient | assigned the blade edge | tip direction to all directions centering on the center axis | shaft of a spiral. Therefore, the hair can be cut regardless of which direction the razor blade is moved, and reciprocating shaving is also possible.

  Next, the razor blade of the 7th example in the embodiment of the present invention is explained based on FIG. Since the basic configuration of this example is the same as that of the second example described above, the same reference numerals are given to components that are the same as those of the second example, and detailed description thereof is omitted, which is different from the second example. Only the detailed configuration will be described in detail below.

  In this example, the linear blade member 1 having a circular shape is not arranged in a planar shape as in the second example, but the linear blade member 1 having a plurality of circular shapes having different diameters is arranged at the center. Is formed in a dome shape by being coupled by the crosspiece member 3 while shifting in the vertical direction in the figure. Each linear blade member 1 having a circular shape is formed with a blade edge portion 2 over the entire periphery of the edge along the axial direction.

  In the razor tool using the dome-shaped razor blade, for example, the cutting edge can be aligned with a concave curved skin surface such as a chin or armpit. The crosspiece member 3 may be a rigid body such as a metal. However, by using a resin having a certain degree of elasticity, the crosspiece member 3 and the linear blade members 1 are brought into contact with the skin surface when the entire razor blade is pressed. And adheres well to a skin surface having a certain degree of unevenness over a wide range. Moreover, in the razor blade, the blade edge portion 2 provided around the entire edge of the linear blade member 1 has a structure in which the blade edge direction is directed in all directions around the central axis of the dome. The hair can be cut even if the razor blade is moved in the direction, and reciprocating shaving is also possible.

  In the illustrated example, the crosspiece members 3 are continuously formed in the radial direction. However, as shown in the second example, it is also preferable that the arrangement between the linear blade members 1 is shifted in the circumferential direction. is there. Thereby, the part covered with the crosspiece member 3 of each linear blade member 1 shifts in the circumferential direction, and when the razor blade is moved in one direction, it is prevented that a portion left in contact with the crosspiece member 3 is left unshaved.

  Next, an eighth example of a razor blade according to an embodiment of the present invention will be described with reference to FIG. In this example, the linear blade member 1 as in the first to seventh examples is not used, but a thin razor blade 51 as shown in FIG. 9 is combined and arranged in a planar shape. is there. A slit 10 is formed in the razor blade 51, and a plurality of razor blades 51 are combined in a lattice shape through the slit 10. Even in the case of the razor blade of this example, the shaving operation in multiple directions is possible by combining the blades so as to face in a plurality of directions.

The razor blade of the 1st example in embodiment of this invention is shown, (a) is a perspective view of the whole razor tool, (b) is the sectional view on the AA 'line of (a), (c) is (b). It is a principal part enlarged view. The razor blade of the 2nd example in embodiment of this invention is shown, (a) is a perspective view of the whole razor tool, (b) is the BB 'sectional view taken on the line (a), (c) is (b). It is a principal part enlarged view. The razor blade of the 3rd example in embodiment of this invention is shown, (a) is a perspective view of the whole razor tool, (b) is sectional drawing of a razor blade. The razor blade of the 4th example in the embodiment of the present invention is shown, (a) is a perspective view of the whole razor tool, and (b) is a sectional view of a razor blade. The razor blade of the 5th example in an embodiment of the present invention is shown, (a) is a perspective view of the whole razor tool, (c) is a front view of a razor blade, (b) is a sectional view of a razor blade. The razor blade of the 6th example in the embodiment of the present invention is shown, (a) is a perspective view and (b) is a sectional view. The razor blade of the 7th example in the embodiment of the present invention is shown, (a) is a perspective view and (b) is a sectional view. It is a perspective view which shows the razor blade of the 8th example in embodiment of this invention. The conventional razor blade is shown, (a) is a perspective view of the whole razor tool, (b) is sectional drawing of a razor blade.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Linear blade member 2 Cutting edge part 3 Crosspiece member

Claims (7)

  A linear blade member which is formed in a linear shape so as to have elasticity and has a blade edge portion along the axial direction thereof is arranged in a planar shape so that the blade edge direction of the blade edge portion is directed in a plurality of directions. Razor blade that features.   The razor blade according to claim 1, wherein the linear blade member has a plurality of blade edges along the axial direction.   The razor blade according to claim 1, wherein the linear blade member is formed as a single continuous body.   The razor blade according to any one of claims 1 to 3, wherein the linear blade member has a curved shape bent in a zigzag manner.   The razor blade according to any one of claims 1 to 3, wherein the linear blade member has a coil shape.   The razor blade according to any one of claims 1 to 3, wherein the linear blade member has a spiral shape whose diameter is changed stepwise. The said linear blade member comprises several circular shape from which a diameter differs, Each linear blade member is couple | bonded with the crosspiece member, and the whole is formed in the dome shape, It is characterized by the above-mentioned. The razor blade according to any one of 3.

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