JP2017086606A - Support structure of oscillatable razor - Google Patents

Abstract

SOLUTION: In a both-turning support part 6 that supports a razor head 2 to be capable of turning with respect to a head holder 7, energization means is also collected to turn the razor head 2 by resisting elastic force by operating force given to the razor head 2 from a neutral position P to an oscillation position, and to not only engage a hole 12 of an arm part 8 of the head 2 turnably with a shaft 11 of an arm part 10 of the holder 7, when turning the razor head 2 from the oscillation position to the neutral position P under elastic force, but also make the arm part 10 of the holder 7 elastically deform along the direction of a turning center line 6a to generate elastic force under the relative turn of an inner peripheral cam face 14 of the hole 12 with an outer peripheral cam face 13 of the shaft 11.EFFECT: A razor head 2 is supported oscillatably with respect to a holder 7 in a simple structure, and energization means can easily be provided in a simple structure.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a support structure for supporting a razor head so as to be able to swing with respect to a holder in a swing-type razor.

  In the following Patent Document 1, a razor head having a blade body and a rotation support portion (support arm portion 7 and rotation fulcrum in FIGS. 1 and 2 in the following publication) on both sides in the extending direction of the blade edge of the blade body. And a holder for supporting the razor head by means of part 8), and biasing means (the elastic plate part 11 and the pressing plate part 15 in FIGS. Yes. This biasing means rotates the razor head from the neutral position to the swing position against the elastic force by an external force applied to the razor head, and rotates the razor head from the swing position to the neutral position by the elastic force. Let

JP 2011-152345 A

  In the above-mentioned Patent Document 1, the urging means having a separate structure with respect to the rotation support portions between the rotation support portions is provided at a position other than the rotation support portions. The support structure of the head was complicated.

  An object of the present invention is to simplify a support structure of a razor head with respect to a holder in a swing-type razor.

The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 4) of the embodiments described later.
The support structure of the swinging razor (1) according to the invention of claim 1 includes a razor head (2) having a blade body (3) and an extending direction (Y) of a blade edge (3a) of the blade body (3). And a holder (7) for supporting the razor head (2) by means of a rotation support part (6). In both the rotation support parts (6), the fulcrum part (12) provided on one of the razor head (2) and the holder (7) and the fulcrum part (11) provided on the other are fitted to each other. The razor head (2) is rotatably supported with respect to the holder (7), and the razor head (2) is moved from the neutral position (P) to the swing position (Q) by an external force applied to the razor head (2). While rotating against the elastic force, the razor head (2) is rotated from the swing position (Q) to the neutral position (P) by the elastic force.

  In the invention of claim 1, not only the fulcrum portions (12, 11) but also the urging means for generating an elastic force in both the rotation support portions (6) are integrated in the same structure as the fulcrum portions (12, 11). Therefore, the razor head (2) can be supported swingably with respect to the holder (7) with a simple structure.

  In the both rotation support part (6) according to the invention of claim 2 based on the invention of claim 1, the fulcrum part (12) provided on one of the razor head (2) and the holder (7) and the other At least one of the fulcrum parts (12, 11) of the fulcrum parts (11) provided on the arm part (8, 10). In the invention of claim 2, the fulcrum part (12, 11) can be easily provided in the arm part (8, 10) with a simple structure.

  In both rotation support portions (6) according to the invention of claim 3 premised on the invention of claim 2, the inside of one fulcrum portion (12) of both fulcrum portions (12, 11) fitted to each other; A cam surface (14, 13) is provided on the outside of the other fulcrum portion (11) so as to be relatively rotatable, and the arm portion (10) is turned to a rotation support portion (by the relative rotation of the cam surface (14, 13)). An elastic force is generated by elastic deformation by a curved motion or linear motion along the direction of the rotation center line (6a) of 6). In the invention of claim 3, since the elastic force is generated in the arm portion (10) by the cam surfaces (14, 13) provided on the fulcrum portions (12, 11), the urging means can be easily formed with a simple structure. Can be provided.

  In the both rotation support portions (6) according to the invention of claim 4 based on the invention of claim 3, the fulcrum provided on one of the razor head (2) and the holder (7) is a hole ( 12), and the fulcrum portion provided on the other side is the shaft portion (11). In the invention of claim 4, the fulcrum portion can be easily provided with a simple structure by the hole portion (12) and the shaft portion (11) which are fitted to each other.

  In the both rotation support portions (6) according to the invention of claim 5 based on the invention of claim 4, arms (8, 10) are provided on the razor head (2) and the holder (7), and the holder The arm portion (10) of (7) generates an elastic force, and the arm portion (10) of the holder (7) is provided with the shaft portion (11), and the arm portion (8) of the razor head (2). Is provided with a hole (12). In the invention of claim 5, the fulcrum portions (12, 11) and the urging means for generating the elastic force can be easily provided with a simple structure.

  In both the rotation support portions (6) according to the invention of claim 6 premised on the invention of claim 4 or claim 5, the holes (12) opposed to each other in the direction of the rotation center line (6a). At least one (13a) of the sliding contact surfaces (14a, 13a) provided at the opposite side end of the cam surface (14) and the opposite side end of the cam surface (13) of the shaft portion (11) is: It inclines so that it may approach with respect to a rotation center line (6a) as it goes to the hole part (12) side from the axial part (11) side. In the invention of claim 6, the shaft portion (11) can be easily fitted into the hole portion (12).

  In the both rotation support portions (6) according to the invention of claim 7 premised on the invention of claim 6, the sliding contact surface (14a) of the cam surface (14) of the hole portion (12) is a rotation support portion ( 6) is equal in distance to the rotation center line (6a), and the sliding surface (13a) of the cam surface (13) of the shaft portion (11) is the rotation center line (6a) of the rotation support portion (6). ) To be different. Further, in the both rotation support portions (6) according to the invention of claim 8 based on the invention of claim 7, the sliding contact surface (14a) of the cam surface (14) of the hole portion (12) is the rotation support. It forms circular shape centering on the rotation center line (6a) of the portion (6), and the sliding surface (13a) of the cam surface (13) of the shaft portion (11) is the rotation of the rotation support portion (6). It forms an annulus that changes so that the radius around the center line (6a) is different. In the invention of claim 7 or claim 8, the cam surface (14) of the hole portion (12) and the cam surface (13) of the shaft portion (11) can be easily provided with a simple structure.

Next, technical ideas other than the claims will be described with reference to the reference numerals in the drawings of the embodiments.
In both rotation support portions (6) according to the ninth invention based on the invention of claim 5, both arm portions (10) of the holder (7) are between both arm portions (8) of the razor head (2). It is arranged. In the ninth aspect of the present invention, the two arm portions (10) of the holder (7) are elastically provided in a direction to be separated from each other between the two arm portions (8) of the razor head (2), and the shaft portion is formed in the hole portion (12). (11) can be easily fitted.

  In the shaft portion (11) of the both rotation support portions (6) according to the tenth invention based on the invention of claim 8, the sliding contact surface (13a) of the cam surface (13) is the rotation support portion (6). ) From the top portion (15) through which the rotation center line (6a) passes. In the tenth aspect, the sliding contact surface (13a) of the cam surface (13) of the shaft portion (11) can be easily provided.

  The invention according to any one of claims 4 to 8, or the eleventh invention based on the ninth invention or the tenth invention, wherein the arm portion (10) is the rotation support portion (6). The hole (12) and the shaft (11) are attached to and detached from each other by elastic deformation along the direction of the rotation center line (6a). In the eleventh invention, the razor head (2) can be easily assembled to the holder (7) and the razor head (2) can be separated from the holder (7).

  The present invention can simplify the support structure of the razor head (2) with respect to the holder (7) in the swing-type razor (1).

(A) is an assembly perspective view showing a swing-type razor, (b) is also an exploded perspective view. (A) is a partial notch exploded side view which shows the swing-type razor of FIG. 1, (b) is a partially notched exploded rear view similarly. (A) is the partial expanded side view which shows the neutral position of the razor head in the swing type razor of FIG. 1, (b) is a partial expanded rear view, (c) is between a razor head and a holder. It is an AA line partial expanded sectional view of (a) showing a rotation support part. (A) is a partial enlarged side view showing the swing position of the razor head in the swing-type razor of FIG. 1, (b) is also a partially enlarged rear view, and (c) is between the razor head and the holder. It is a BB line partial expanded sectional view of (a) which shows this rotation support part.

Hereinafter, a swing-type razor according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the razor 1 includes a razor head 2 in which a plurality of blade bodies 3 are assembled between a blade base 4 and a top plate 5, and an extending direction Y (left-right direction) of a blade edge 3 a of the blade body 3. And a holder 7 that supports the razor head 2 by means of a rotation support portion 6.

  As shown in FIGS. 2 and 3, arm portions 8 are formed on the left and right sides of the blade base 4 of the razor head 2 toward the head 9 of the holder 7, and the arms are formed on the left and right sides of the head 9 of the holder 7. A portion 10 is formed toward the blade base 4 of the razor head 2, and both arm portions 10 of the holder 7 are disposed between both arm portions 8 of the razor head 2. Both arm portions 10 of the holder 7 are elastically deformed in the direction of approaching each other along the direction of the rotation center line 6a of the rotation support portion 6 and generate elastic force in the direction of separating from each other. In both rotation support parts 6, a shaft part 11 as a fulcrum part is formed on the arm part 10 of the holder 7 toward the arm part 8 of the razor head 2, and the fulcrum part is provided on the arm part 8 of the razor head 2. Is formed so as to face the shaft portion 11, the shaft portion 11 is fitted into the hole portion 12 by the elastic force of the arm portion 10, and the razor head 2 is rotatably supported with respect to the holder 7. Yes.

  A cam surface 13 is formed on the outer periphery (outer side) of the shaft portion 11, and a cam surface 14 is formed on the inner periphery (inner side) of the hole portion 12. These cam surfaces 13, 14 can be rotated relative to each other. Is fitted. Sliding contact surfaces 13a and 14a are formed at opposite ends of the cam surface 13 of the shaft portion 11 and the cam surface 14 of the hole portion 12 facing each other in the direction of the rotation center line 6a. ing.

The cam surface 14 of the hole portion 12 and its sliding contact surface 14a have a circular shape with the same radius (distance to the rotation center line 6a) about the rotation center line 6a of the rotation support portion 6.
The cam surface 13 of the shaft portion 11 and its sliding contact surface 13a are annular around the rotation center line 6a from the top portion 15 through which the rotation center line 6a of the rotation support portion 6 passes to the base end edge portion 16 having an elliptical ring shape. It has a convex curved surface that spreads out. In the base end edge portion 16, a pair of long-diameter base end edge portions 16a having a maximum radius around the rotation center line 6a and a pair of short-diameter base end edge portions 16b having a minimum radius are spaced by 90 degrees. The cam surfaces 13 centering on the rotation center line 6a and the slidable contact surface 13a have different radii (distances relative to the rotation center line 6a). In other words, the cam surface 13 between the pair of long-diameter base end edge portions 16a and the top portion 15 and the radius around the rotation center line 6a in the sliding contact surface 13a are the same as the pair of short-diameter base end edge portions 16b and the top portion. 15 is larger than the radius around the rotation center line 6a at the cam surface 13 and the sliding contact surface 13a between the cam surface 13 and the sliding contact surface 13a. As it goes from the shaft portion 11 side toward the arm portion 8 of the razor head 2 and its hole portion 12 side, it is inclined so as to approach the rotation center line 6a.

  The shaft portion 11 and the hole portion 12 are attached to and detached from each other by elastic deformation of both the arm portions 10 of the holder 7, and the razor head 2 is assembled to the holder 7 as shown in FIG. 1 (a). The razor head 2 can be separated from the holder 7 as shown in FIG.

Next, the case where a razor is used will be described.
As shown in FIG. 3, at the neutral position P of the razor head 2, both arms 8 of the razor head 2 come into contact with both arms 10 of the holder 7 and stop.

  When an external force such as an operating force is applied to the razor head 2 at the neutral position P of the razor head 2, the sliding contact surface 14 a of the cam surface 14 of the hole portion 12 slides on the cam surface 13 of the shaft portion 11 as shown in FIG. 4. In order to hold down the contact surface 13a, the arms 10 of the holder 7 are bent so as to approach each other and generate an elastic force in a direction away from each other, and the razor head 2 resists the elastic force of the arms 10 of the holder 7. To a plurality of arbitrary swing positions Q.

  When an external force such as an operating force on the razor head 2 is removed at the swing position Q of the razor head 2, the sliding contact surface 13 a of the cam surface 13 of the shaft portion 11 is formed in the hole portion 12 by the elastic force of both arms 10 of the holder 7. In order to hold down the slidable contact surface 14a of the cam surface 14, the razor head 2 rotates from the swing position Q to the neutral position P shown in FIG.

This embodiment has the following effects.
(1) In the both rotation support portions 6 that rotatably support the razor head 2 with respect to the holder 7, the shaft portion 11 of the arm portion 10 of the holder 7 is rotated in the hole portion 12 of the arm portion 8 of the razor head 2. The biasing means for generating not only the movable fitting but also the elastic force is integrated, so that the razor head 2 can be swingably supported with respect to the holder 7 with a simple structure. Therefore, the support structure of the razor head 2 with respect to the holder 7 in the swing-type razor 1 can be simplified.

  (2) In the two rotation support portions 6 that support the razor head 2 so as to be rotatable with respect to the holder 7, the relative rotation between the cam surface 14 on the inner periphery of the hole portion 12 and the cam surface 13 on the outer periphery of the shaft portion 11. Due to the movement, the arm portion 10 of the holder 7 is elastically deformed in the direction of approaching each other along the direction of the rotation center line 6a, and the elastic force is generated in the direction of separating from each other. Can be easily provided.

For example, the following embodiment may be configured as follows.
In the both rotation support portions 6, the arm portion 8 of the razor head 2 is formed with a shaft portion instead of the hole portion 12, and the arm portion 10 of the holder 7 is formed with a hole portion instead of the shaft portion 11, The shaft portion may be fitted into the hole portion.

  In the both rotation support portions 6, the arm portion 8 of the razor head 2 is made elastic in place of the elasticity of the arm portion 10 of the holder 7, or not only the elasticity of the arm portion 10 of the holder 7 but also the razor head 2. The arm portion 8 may also be elastic.

-In both the rotation support parts 6, the arm part 10 may be formed only in the holder 7, or the arm part 8 may be formed only in the razor head 2.
In both the rotation support portions 6, the cam surface is provided only in the swing angle range of the razor head 2 with respect to the holder 7 in the hole portion 12 of the arm portion 8 of the razor head 2 and the shaft portion 11 of the arm portion 10 of the holder 7. It may be formed.

  The both arm portions 8 of the razor head 2 are arranged between the both arm portions 10 of the holder 7, and the shaft portion 11 of the arm portion 10 of the holder 7 is opposed to the hole portion 12 of the arm portion 8 of the razor head 2. The shaft portion 11 may be fitted to the hole portion 12 so as to be rotatable. In that case, both the arm portions 10 of the holder 7 are elastically deformed in a direction away from each other along the direction of the rotation center line 6 a of the rotation support portion 6, and an elastic force is generated in a direction toward each other.

  -In both the rotation support parts 6, about the cam surface 13 formed in the axial part 11 of the arm part 10 of the holder 7, if it is a range which can exhibit a cam function, the form of the base end edge part 16, or the top part Various changes can be made to the form of the surface extending in an annular shape from 15 to the base edge 16. Moreover, in both the rotation support parts 6, about the cam surface 14 formed in the hole part 12 of the arm part 8 of the razor head 2, if it is a range which can exhibit a cam function, according to the cam surface 13, a form is used. Various changes can be made.

In the holder 7 composed of the head 9 and the gripping part, the arms 10 of the head 9 are formed separately from the gripping part without integrally molding the arms 10 of the head 9 with the gripping part. Also good.
In the head portion 9 of the holder 7, the shaft portion 11 may be formed separately from the arm portion 10 without integrally forming the shaft portion 11 with the arm portion 10.

  The both arm portions 10 of the head portion 9 of the holder 7 can be molded from resin or metal.

  DESCRIPTION OF SYMBOLS 1 ... Swing type razor, 2 ... Razor head, 3 ... Blade body, 3a ... Blade edge of blade body, 6 ... Turning support part, 6a ... Turning center line, 7 ... Holder, 8 ... Arm part of razor head, DESCRIPTION OF SYMBOLS 10 ... Arm part of a holder, 11 ... Shaft part (fulcrum part) 12 ... Hole part (fulcrum part), 13 ... Cam surface of a shaft part, 13a ... Sliding contact surface of a cam surface, 14 ... Cam surface of a hole part, 14a The sliding surface of the cam surface, P: the neutral position of the razor head, Q: the swing position of the razor head, Y: the extending direction of the blade edge.

Claims (8)

  A razor head having a blade body, and a holder for supporting the razor head by a rotation support portion on both sides in the extending direction of the blade edge of the blade body. The fulcrum part provided on one side and the fulcrum part provided on the other side are fitted to each other so that the razor head can be rotated with respect to the holder, and the razor head is moved from the neutral position to the swing position by an external force applied to the razor head. And a razor head support structure, wherein the razor head is rotated from the swing position to the neutral position by the elastic force.   In the both rotation support portions, at least one of the fulcrum portions provided on one of the razor head and the holder and the fulcrum portion provided on the other is provided on the arm portion. The support structure for the swing-type razor according to claim 1.   In the both rotation support portions, a cam surface is provided on the inner side of one fulcrum portion and the outer side of the other fulcrum portion of the two fulcrum portions fitted to each other, and the cam surfaces are relatively rotated. The support structure for a swing-type razor according to claim 2, wherein the arm portion is elastically deformed along the direction of the rotation center line of the rotation support portion to generate an elastic force.   The fulcrum part provided in one of the razor head and the holder is a hole part, and the fulcrum part provided in the other is a shaft part in the both rotation support parts. Support structure for swinging razor.   In the both rotation support portions, an arm portion is provided on the razor head and the holder, the arm portion of the holder generates an elastic force, an arm portion is provided on the arm portion of the holder, and an arm portion of the razor head The support structure for a swing-type razor according to claim 4, wherein a hole is provided in the head.   In the two rotation support portions, sliding contact surfaces provided at opposite ends of the cam surfaces of the holes facing each other in the direction of the rotation center line and opposite ends of the cam surfaces of the shaft portions. 6. The support for a swing-type razor according to claim 4 or 5, wherein at least one of them is inclined so as to approach the rotation center line as it goes from the shaft side to the hole side. Construction.   In both the rotation support portions, the sliding contact surface of the cam surface of the hole portion has the same distance from the rotation center line of the rotation support portion, and the sliding contact surface of the cam surface of the shaft portion is the rotation of the rotation support portion. The support structure for a swing-type razor according to claim 6, wherein the distance to the moving center line changes so as to be different.   In both the rotation support portions, the sliding surface of the cam surface of the hole portion has a circular shape around the rotation center line of the rotation support portion, and the sliding surface of the cam surface of the shaft portion is the rotation support portion. The support structure for a swing-type razor according to claim 7, wherein the swinging razor has an annular shape that changes so that radii about the rotation center line are different.

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