Razor, razor head, and razor head fitting body

Abstract

To provide a razor with a razor head attachable / detachable to / from a fitting body that has a suitable swing function and is environmentally friendly.SOLUTION: A razor has a razor head, and a fitting body of the razor head that has a connection hole for detachable connection of the razor head. The razor head comprises a blade assembly body which holds a blade body, and a connection part which is inserted in the connection hole. The connection hole is an open hole in which the connection part is inserted, and a cross section of the connection hole in a face orthogonal to an insertion direction of the connection part into the connection hole is so formed that a length of the blade body in a longitudinal direction orthogonal to an elongation direction of the blade body is longer than a length in a cross direction that is the extension direction of the blade body held by the razor head.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] One aspect of the present invention relates to a razor, a razor head, and a razor head attachment. [Background technology]

[0002] In recent years, the 3Rs have been advocated, which are the three Rs: Reduce, which means using things carefully and reducing waste; Reuse, which means repeatedly using usable items; and Recycle, which means using waste again as a resource. In addition, one of the 17 goals in the Sustainable Development Goals (SDGs) adopted at the United Nations Summit is to ensure sustainable production and consumption patterns, which calls for a significant reduction in waste generation. Under these circumstances, there is a need to promote the development of environmentally friendly razors that meet the 3Rs, even in the field of razors.

[0003] Incidentally, Patent Document 1 discloses an invention relating to a razor with a removable blade in which a blade can be detachably connected to a holder. Patent Document 2 discloses a swivel type razor in which a razor head with a blade attached can swivel against elasticity relative to the head of the holder. Patent Documents 3 to 7 disclose inventions relating to a razor head configured to swivel relative to a handle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-77178 A [Patent Document 2] JP 2019-22601 A [Patent Document 3] Patent No. 6600762 [Patent Document 4] Patent No. 6619534 [Patent Document 5] US Patent Application Publication No. 2014 / 0116211 [Patent Document 6] US Patent Application Publication No. 2015 / 0158192 [Patent Document 7] US Patent Application Publication No. 2013 / 0312272 Summary of the Invention [Problem to be solved by the invention]

[0005] However, it is difficult to say that conventional razors have been designed with sufficient consideration given to both the environment and the user's comfort. Some razors equipped with the above conventional razor heads have relatively good performance due to their oscillating function, but there is room for functional improvement. In addition, there are some areas where it cannot be said that the environment is sufficiently considered.

[0006] An object of the present invention is to provide a razor that can solve the above problems. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides the following means. In the following description, reference numerals and the like in the drawings may be written in parentheses to facilitate understanding of the invention, but the components of the present invention are not limited to these specific configurations and should be broadly interpreted within the scope of technical understanding of those skilled in the art.

[0008] One aspect of the present invention is A razor head attachment body (2) having a connection hole (25) for detachably connecting a razor head (3), The connecting hole is a through hole into which a connecting portion of the razor head is inserted, A cross section of the connecting hole in a plane perpendicular to the insertion direction of the connecting portion into the connecting hole is formed such that a length in a vertical direction perpendicular to the extension direction of the blade body held by the razor head is greater than a length in a horizontal direction perpendicular to the extension direction of the blade body. A mounting body for a razor head.

[0009] Conventionally, the attachment body (including the grip portion) for detachably connecting the razor head has a shape that is long in the horizontal direction, which is the extension direction of the blade, so that it is necessarily configured to have a connection hole that is long in the horizontal direction. However, when the connection hole of the attachment body is long in the horizontal direction, the corresponding part of the attachment body is also long in the horizontal direction, so that when the razor head rotates (tilts) around the axis of the extension direction of the attachment body (grip portion) to perform a swiveling motion, the attachment body may hinder the rotation of the razor head. In the above configuration, the connection hole of the attachment body is intentionally made longer in the vertical direction than in the horizontal direction, so that when the razor head rotates (tilts) around the axis of the extension direction of the attachment body to perform a swiveling motion, the attachment body can be prevented from hindering the rotation of the razor head.

[0010] In addition, in the above configuration, the connection hole of the attachment body can be made relatively simple, so that the entire attachment body can be made simple. For example, even if the attachment body is formed of a single material such as metal or resin, sufficient attachment and detachment performance can be achieved. Therefore, depending on the material used, the attachment body can be made to have characteristics such as being less likely to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. Furthermore, if the design drawing of the attachment body or the data for manufacturing the attachment body with a 3D printer is made public or distributed, since the attachment body has a simple configuration, it is relatively easy for an individual to manufacture an independently made attachment body that eliminates waste of resources. Furthermore, since the gripping portion does not necessarily have to be dedicated to a razor, it is also possible to configure it to function as a razor just by connecting the attachment body to a long-handled razor or the lever part of a nail clipper, for example.

[0011] In the above razor head attachment, preferably, The connecting hole is formed so that, when the razor head and the mounting body are connected, an operating portion (65) which is operated to detach the razor head from the connecting hole protrudes from an opening on the side of the connecting hole opposite the blade body side.

[0012] In the attachment body having the above-mentioned configuration, the operating part protrudes from the connecting hole on the opposite side to the blade side, so that the user can easily detach the razor head from the attachment body by operating the operating part. In addition, since the connecting hole has a shape long in the vertical direction, the operating part can also be made long in the vertical direction. In this way, when the operating part is long in the vertical direction, the direction in which the index finger or thumb of the hand holding the razor extends and the vertical direction of the vertically long operating part are the same as the direction in which the grip part of the razor extends, making it easier for the user to operate it, compared to a shape long in the horizontal direction. In addition, when the attachment body (grip part) is gripped and the operating part is operated with the index finger or thumb, the shape makes it easy for the user to transmit force to the operating part, so that the razor head can be detached from the attachment body with less force.

[0013] In the above razor head attachment, preferably, The connecting hole has a stepped surface (23) recessed from the outer edge surface of the mounting body, which can engage a disengaging portion (64) that changes state between an engaged state in which the razor head can be engaged in the connecting hole by operating the operating portion, and an unlocked state in which the razor head can be released from the connecting hole.

[0014] In the attachment body (including the grip portion) for detachably connecting the razor head, the portion for engaging and connecting the razor head is close to the hand and skin, so that the razor head may suddenly fall off the attachment body. In contrast, in the attachment body of the above configuration, the step surface for engaging the disengagement portion is recessed from the outer edge surface of the attachment body by one step. Therefore, the disengagement portion is covered by the connection hole and is not exposed, and even if the user's hand or skin unexpectedly comes into contact with the operation portion, the movement of the disengagement portion is restricted inside the connection hole, so that the disengagement portion is prevented from being released from the engagement. This makes it possible to provide a razor that can prevent the razor head from suddenly falling off while facilitating the attachment and detachment of the razor head by the configuration of the cantilever-shaped spring and the operation portion of the razor head.

[0015] In the above razor head attachment, preferably, The connecting hole has a connection surface that connects the outer edge surface and the step surface, and is formed so as to cover the entire portion of the engaging / disengaging portion that faces the connection surface in the extension direction of the blade body.

[0016] With the mounting body configured as described above, the side of the engagement / disengagement part is covered by the connecting hole, so that even if the user accidentally touches the operating part during use, the engagement / disengagement part can move, releasing the lock and more effectively preventing the razor head from falling off.

[0017] In the above razor head attachment, preferably, The device further includes a connecting mechanism (71, 73) provided at the lower end for connecting with a rod-shaped member (72).

[0018] According to the attachment having the above configuration, it is possible to use other rod-shaped members as the gripping part instead of the gripping part dedicated to the razor. For example, the rod-shaped member can be an old chopstick, a toothbrush, a writing implement, or a piece of wood. By using such a old rod-shaped member together with the attachment, it is possible to use something around the user as the gripping part of the razor. This eliminates the need to make a gripping part dedicated to the razor, making it possible to reduce the use of resources.

[0019] One aspect of the present invention is A razor (1) comprising a razor head (3) and a mounting body (2) for the razor head having a connecting hole (25) for detachably connecting the razor head, The razor head (3) is a blade assembly (4) for holding a blade body (41); A connection portion (6) is inserted into the connecting hole, The connecting hole is a through hole into which the connecting portion is inserted, A cross section of the connecting hole in a plane perpendicular to the insertion direction of the connecting portion into the connecting hole is formed such that a length in a vertical direction perpendicular to the extension direction of the blade body held by the razor head is greater than a length in a horizontal direction perpendicular to the extension direction of the blade body. It's a razor.

[0020] In a razor having the above configuration, the connecting hole of the attachment body is intentionally made longer vertically than horizontally, thereby preventing the attachment body from interfering with the rotation of the razor head when the razor head rotates (tilts) around the axis along which the attachment body extends to perform a swiveling motion.

[0021] In addition, in the above configuration, the connection hole of the attachment body can be made relatively simple, so that the entire attachment body can be made simple. For example, even if the attachment body is formed of a single material such as metal or resin, sufficient attachment and detachment performance can be achieved. Therefore, depending on the material used, the attachment body can be configured with features such as being less likely to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. Furthermore, if the design drawing of the attachment body or the data for manufacturing the attachment body with a 3D printer is made public or distributed, since the attachment body has a simple configuration, it is relatively easy for an individual to manufacture an independently made attachment body that eliminates waste of resources. Furthermore, since the gripping portion does not necessarily have to be dedicated to a razor, it is also possible to configure it to function as a razor just by connecting the attachment body to a long-handled razor or the lever part of a nail clipper, for example.

[0022] In the above razor, preferably, The connecting portion (6) is provided with an operating portion (65) that is provided on the opposite side to the exposed side of the blade body and is operated when removing the razor head from the connecting hole, The connecting hole is formed so that, when the razor head and the attachment body are connected to each other, the operating portion projects from an opening of the connecting hole on the side opposite to the blade body side.

[0023] In the razor having the above configuration, the operating part protrudes from the connecting hole on the opposite side to the blade side, so that the user can easily detach the razor head from the attachment by operating the operating part. In addition, since the connecting hole has a shape long in the vertical direction, the operating part can also be made long in the vertical direction. In this way, when the operating part is long in the vertical direction, the direction in which the index finger or thumb of the hand holding the razor extends and the vertical direction of the vertically long operating part are the same as the direction in which the grip part of the razor extends, making it easier for the user to operate it, compared to when the operating part is long in the horizontal direction. In addition, when the attachment (grip part) is held and the operating part is operated with the index finger or thumb, the shape makes it easy for the user to transmit force to the operating part, so that the razor head can be detached from the attachment with less force.

[0024] In the above razor, preferably, The connecting portion (6) further includes an engaging / disengaging portion (64) that changes between an engaging state in which the razor head can be engaged with the connecting hole and an unlocking state in which the razor head can be released from the connecting hole by operating the operating portion, The connecting hole has a stepped surface (23) recessed by one step from the outer edge surface of the mounting body, capable of engaging the engaging / disengaging portion.

[0025] In the razor having the above-mentioned configuration, the step surface that can engage the engaging / disengaging part is recessed from the outer edge surface of the attachment body. Therefore, the engaging / disengaging part is covered by the connecting hole and is not exposed. Even if the user's hand or skin unexpectedly comes into contact with the operating part, the movement of the engaging / disengaging part is restricted inside the connecting hole, and the engaging / disengaging part is prevented from being released from its engagement. This makes it possible to provide a razor that can prevent the razor head from accidentally falling off while facilitating the attachment and detachment of the razor head by the configuration of the cantilever spring and the operating part of the razor head.

[0026] In the above razor, preferably, The connection portion (6) is a guide portion (62) extending on the opposite side to the exposed side of the blade body and held by the mounting body; and a cantilever spring (63) extending on the opposite side to the exposed side of the blade body. The operating portion is provided on the free end side of the cantilever spring.

[0027] In the razor configured as described above, a cantilever spring is provided at the connection portion, so that the razor head can be relatively easily attached and detached from the mounting body by utilizing the elastic deformation of the spring to change the engagement state of the engagement / detachment portion.

[0028] In the above razor, preferably, The cantilever spring is provided below the lower end of the blade assembly.

[0029] With the razor having the above configuration, the distance between the upper end of the operating part and the connecting portion between the operating part and the cantilever spring can be increased, which increases the distance from the point of force to the fulcrum during operation, making it possible to attach and detach the razor head to and from the attachment body with less force.

[0030] In the above razor, preferably, The connecting hole has a connection surface that connects the outer edge surface and the step surface, and is formed so as to cover the entire portion of the engaging / disengaging portion that faces the connection surface in the extension direction of the blade body.

[0031] With a razor having the above configuration, the side of the engagement / disengagement part is covered by the connecting hole, so that even if the user accidentally touches the operating part during use, the engagement / disengagement part can move, releasing the lock and more effectively preventing the razor head from falling off.

[0032] In the above razor, preferably, The mounting body further includes a connecting mechanism (71, 73) provided at the lower end for connecting with a rod-shaped member (72).

[0033] According to the razor having the above configuration, it is possible to use other rod-shaped members as the razor's grip, instead of the grip dedicated to the razor. For example, the rod-shaped member can be an old chopstick, a toothbrush, a writing implement, or a piece of wood. By using such a old rod-shaped member together with the attachment, it is possible to use something around the user as the razor's grip. This eliminates the need to create a grip dedicated to the razor, making it possible to reduce the use of resources.

[0034] In the above razor, preferably, The razor head further comprises an elastic support (5) provided on the opposite side to the exposed side of the blade body, The elastic support is A connecting portion (5c) that connects the blade assembly and the connecting portion; The blade assembly further includes a pair of flexible portions (5b) extending from the connecting portion in the left-right direction along the extending direction of the blade body, the ends of which are connected to the blade assembly.

[0035] According to the razor having the above configuration, the oscillating function is provided on the razor head side, and the attachment does not need to have an oscillating function, so that the entire attachment can be relatively simply configured while providing a razor with an oscillating function. Therefore, it is easy to configure the attachment with a single material, which has characteristics such as being difficult to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. In addition, by publishing or distributing the design drawing of the attachment or the data for manufacturing the attachment with a 3D printer, it becomes relatively easy for individuals to manufacture their own attachment that eliminates waste of resources. In addition, since the attachment does not necessarily have to be dedicated to a razor, it is easy to configure it to function as a razor just by connecting the attachment to, for example, a long-handled razor or a lever part of a nail clipper.

[0036] One aspect of the present invention is A razor head (3) that is detachably connected to a connection hole of a razor head mounting body (2), a blade assembly (4) for holding a blade body (41); A connection portion (6) is inserted into the connecting hole, The connecting portion has an operating portion (65) provided on the opposite side to the exposed side of the blade body, the operating portion being operated when removing the razor head from the connecting hole, The operating portion is formed so that the length in a vertical direction perpendicular to the extending direction of the blade body is greater than the length in a horizontal direction which is the extending direction of the blade body. It is a razor head.

[0037] In the razor head having the above-mentioned configuration, the operating part is intentionally made longer in the vertical direction than in the horizontal direction, so that the connecting hole of the attachment body into which the operating part is inserted is also longer in the vertical direction than in the horizontal direction, and therefore, when the razor head rotates (tilts) around the axis in the direction in which the attachment body extends to perform a swiveling motion, the attachment body is prevented from interfering with the rotation of the razor head.

[0038] In addition, by adopting the razor head having the above-mentioned configuration, the connection hole of the attachment body can be made relatively simple, so that the entire attachment body can be made simple in configuration. For example, even if the attachment body is formed of a single material such as metal or resin, sufficient attachment and detachment performance can be achieved. Therefore, depending on the material used, the attachment body can be made to have characteristics such as being less likely to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. Furthermore, if the design drawing of the attachment body or the data for manufacturing the attachment body with a 3D printer is made public or distributed, since the attachment body has a simple configuration, it is relatively easy for an individual to manufacture an independently made attachment body that eliminates waste of resources. Furthermore, since the gripping portion does not necessarily have to be dedicated to a razor, it is possible to configure it to function as a razor just by connecting the attachment body to, for example, a long-handled razor or a lever part of a nail clipper.

[0039] In the above razor head, preferably The operating portion protrudes from an opening of the connecting hole on a side opposite to the blade body side when the razor head and the attachment body are connected to each other.

[0040] In the razor head having the above configuration, the operating part protrudes from the connecting hole on the opposite side to the blade side, so that the user can easily detach the razor head from the attachment by operating the operating part. In addition, since the operating part is long in the vertical direction, when the operating part is operated with the index finger or thumb of the hand holding the razor, the direction in which the finger extends and the vertical direction of the vertically long operating part are the same as the direction in which the grip part of the razor extends, making it easier for the user to operate it, compared to when the operating part is long in the horizontal direction. In addition, when the attachment (grip part) is held and the operating part is operated with the index finger or thumb, the shape of the operating part makes it easy for the user to transmit force to the operating part, so that the razor head can be detached from the attachment with less force.

[0041] In the above razor head, preferably The connection portion further includes an engagement portion (64) which changes state between an engagement state in which the razor head can be engaged with the connecting hole and an unlocked state in which the razor head can be released from the connecting hole by operating the operating portion.

[0042] In the above razor head, preferably The connection portion is a guide portion (62) extending on the opposite side to the exposed side of the blade body and held by the mounting body; and a cantilever spring (63) extending on the opposite side to the exposed side of the blade body. The operating portion is provided on the free end side of the cantilever spring.

[0043] In the razor head configured as described above, a cantilever spring is provided at the connection portion, so that the razor head can be relatively easily attached and detached from the mounting body by utilizing the elastic deformation of the spring to change the engagement state of the engagement / detachment portion.

[0044] In the above razor head, preferably The cantilever spring is provided below the lower end of the blade assembly.

[0045] With the razor having the above configuration, the distance between the upper end of the operating part and the connecting portion between the operating part and the cantilever spring can be increased, which increases the distance from the point of force to the fulcrum during operation, making it possible to attach and detach the razor head to and from the attachment body with less force.

[0046] In the above razor head, preferably Further, the blade further includes an elastic support (5) provided on the opposite side to the exposed side of the blade body, The elastic support is A connecting portion (5c) that connects the blade assembly and the connecting portion; The blade assembly further includes a pair of flexible portions (5b) extending from the connecting portion in the left-right direction along the extending direction of the blade body, the ends of which are connected to the blade assembly.

[0047] According to the razor head of the above configuration, the oscillating function is provided on the razor head side, and the attachment does not need to have an oscillating function, so that the entire attachment can be relatively simply configured while providing a razor with an oscillating function. Therefore, it is easy to configure the attachment with a single material, which has characteristics such as being difficult to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. In addition, by publishing or distributing the design drawing of the attachment or the data for manufacturing the attachment with a 3D printer, it becomes relatively easy for individuals to manufacture their own attachment that eliminates waste of resources. In addition, since the attachment does not necessarily have to be dedicated to a razor, it is easy to configure it to function as a razor just by connecting the attachment to, for example, a long-handled razor or a lever part of a nail clipper.

[0048] One aspect of the present invention is A razor head attachment (2) that is connected to a razor head that holds a blade, A coupling mechanism (71, 73) is provided for coupling with a rod-shaped member not formed for the mounting body. A mounting body for a razor head.

[0049] In the attachment of the above configuration, instead of a grip part formed specifically for the razor or attachment, for example, a rod-shaped member such as a worn chopstick, toothbrush, writing implement, or piece of wood can be used as the grip part. By using such a worn rod-shaped member together with the attachment, it becomes possible to use something around the user as the grip part for the razor. This eliminates the need to make a grip part specifically for the razor, making it possible to reduce the use of resources.

[0050] The connecting mechanism of the attachment may have a clamping portion (71a) for clamping the rod-shaped member. In a configuration provided with such a connecting mechanism, rod-shaped members having a relatively wide range of diameters can be used in place of the gripping portion.

[0051] The connecting mechanism of the attachment may have an insertion hole into which the rod-shaped member is inserted. In a configuration provided with such a connecting mechanism, it becomes possible to use a rod-shaped member that is not specifically for a razor in place of the grip of a razor with a simple configuration. [Brief description of the drawings]

[0052] [Figure 1] FIG. 1 is a perspective view of a razor according to an embodiment, seen from the back side. [Diagram 2] FIG. 2 is a perspective view of the razor of the embodiment as viewed from the front side. [Diagram 3] FIG. 3 is an exploded perspective view of the razor according to the embodiment. [Figure 4] FIG. 4 is a side view of the razor according to the embodiment. [Diagram 5] FIG. 5 is a cross-sectional view of the razor according to the embodiment. [Figure 6] FIG. 6 is an exploded cross-sectional view of the razor according to the embodiment. [Figure 7] FIG. 7 is a cross-sectional view of the razor in the swiveling state according to the embodiment. [Figure 8] FIG. 8 is a perspective view of the connection hole of the mounting body according to the embodiment, as viewed from the front side. [Figure 9] FIG. 9 is a perspective view of a coupling hole of a mounting body of a modified example, as viewed from the front side. [Figure 10] FIG. 10 is a perspective view of a modified razor as viewed from the front side. [Figure 11] FIG. 11 is a perspective view of a modified razor as viewed from the front side. [Figure 12] FIG. 12 is a side view showing a schematic diagram of a modified razor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0053] The razor of the present invention has a characteristic in the connection mechanism between the razor head and the attachment body, and is configured to facilitate the attachment and detachment of the razor head to and from the attachment body while preventing the razor head from accidentally falling off. In addition, since sufficient attachment and detachment performance can be achieved even if the attachment body as a whole has a simple configuration, the attachment body can have characteristics such as being less likely to break and being easy to recycle.

[0054] The razor of the present invention will be specifically described with reference to the drawings. However, the embodiment and the modified example described below are merely examples of the present invention, and should not be construed as limiting the technical scope of the present invention. In each drawing, the same components are given the same reference numerals.

[0055] Each drawing in this specification shows an x-axis, a y-axis, and a z-axis. In a non-oscillating state, the axis extending in the direction in which the blade of the blade assembly is extended is defined as the "y-axis", and the axis extending in a direction parallel to the skin contact surface of the blade is defined as the "x-axis". The axis extending in a direction perpendicular to both the "x-axis" and "y-axis" is defined as the "z-axis". The x-axis, y-axis, and z-axis form a three-dimensional Cartesian coordinate system in a left-handed system. The direction of the x-axis arrow is sometimes called the x-axis + side, and the direction opposite to the arrow is sometimes called the x-axis - side, and the same is true for the other axes. The z-axis + side and z-axis - side are sometimes called the "back side" and "front side", respectively. The y-axis + side and y-axis - side are sometimes called the "right side" and "left side", respectively. The x-axis + side and x-axis - side are sometimes called the "upper side" and "lower side", respectively. The x-axis direction is sometimes called the vertical direction. The y-axis direction is sometimes called the horizontal direction. The z-axis direction is sometimes called the thickness direction.

[0056] <1. Embodiment> FIG. 1 is a perspective view of the razor 1 of this embodiment as viewed from the back side. FIG. 2 is a perspective view of the razor 1 as viewed from the front side. FIG. 3 is an exploded perspective view of the razor 1. FIG. 4 is a side view of the razor 1. FIG. 5 is a cross-sectional view of the razor 1. FIG. 6 is an exploded cross-sectional view of the razor 1. FIG. 7 is a cross-sectional view of the razor 1 in a state where the razor head has been pivoted to its maximum inclination. FIG. 8 is a perspective view of the connecting hole of the attachment body as viewed from the front side.

[0057] As shown in Fig. 1 and other figures, the razor 1 includes an attachment body 2 and a razor head 3. In this specification, a configuration having a connection hole 25 for attaching the razor head 3 is referred to as an "attachment body," which includes a grip part that is held by a user when using the razor 1, and an attachment member that can be attached to the grip part. In the embodiment, a configuration in which the attachment body 2 is the grip part is described as an example, but the present invention is not limited to this.

[0058] <Mounting body 2> The attachment body 2 has a connecting hole 25 for detachably connecting the razor head 3. The connecting hole 25 is a through hole having an opening 25a on the back side and an opening 25b on the front side. The connecting hole 25 is formed longer in the vertical direction than in the horizontal direction. The attachment body 2 of this embodiment serves as a gripping part that is gripped when the user uses the razor 1, and is extended with a predetermined inclination along the x-axis. The inclination angle of the attachment body 2 with respect to the x-axis is about 0 to 30°, but is not limited thereto. The attachment body 2 is formed of a single material such as hard resin, for example, ABS resin, but is not limited thereto, and materials other than hard resin, such as metal, wood, bamboo, or compressed and solidified paper, may be used. The attachment body 2 does not necessarily have to be formed of a single member.

[0059] The attachment body 2 has a connection surface 22, a step surface 23, a hole inner lower surface 24, and a protrusion 2a inside the connection hole 25. The step surface 23 is a surface formed along the xy plane, recessed by one step from the outer edge surface 21 of the attachment body 2. The connection surface 22 is a surface formed along the yz plane, connecting the outer edge surface 21 and the step surface 23. The hole inner lower surface 24 is a surface formed on the lower side of the connection hole 25. As shown in FIG. 5 and the like, the hole inner lower surface 24 has a portion that abuts against the lower surface of the cantilever spring 63, and an inclined surface that inclines downward from the portion toward the front side. The inclined surface is a portion that abuts against the lower end 64a of the engaging / disengaging portion 64 when the guide portion 62, the cantilever spring 63, the engaging / disengaging portion 64, and the operating portion 65 are inserted into the connection hole 25 to connect the attachment body 2 to the razor head 3. Since the lower surface 24 of the connecting hole 25 is an inclined surface, the connecting hole 25 has a shape that tapers vertically from the front side to the back side.

[0060] The protrusions 2a are formed in a pair at positions facing each other in the y-axis direction so as to protrude from the surface on the z-axis + side of the connecting hole 25 toward the surface on the z-axis - side. The protrusions 2a face the rear end surfaces 6a of the right plate portion 62b and the left plate portion 62c of the razor head 3 when the razor head 3 is connected to the attachment body 2. In this embodiment, the protrusions 2a are configured not to abut against the rear end surfaces 6a of the right plate portion 62b and the left plate portion 62c, but may be configured to abut against them.

[0061] The attachment 2 may not be a gripping part, but may be a member that can be connected to a rod-shaped member that functions as a gripping part. In this case, the attachment 2 may have a connecting mechanism for connecting to the rod-shaped member. The connecting mechanism may be, for example, one that clamps the rod-shaped member, a cap-shaped one having an insertion hole into which the rod-shaped part of the rod-shaped member can be inserted, or another one. For example, used chopsticks, toothbrushes, writing implements, wood, etc. can be used as the rod-shaped member. If such a used rod-shaped member is used together with the attachment 2, it becomes possible to use something around the user as the gripping part of the razor without making a new gripping part for the razor. By using such a used rod-shaped member, it is not necessary to make a gripping part dedicated to the razor, and it is possible to reduce the use of resources.

[0062] <Razor head 3> As shown in FIG. 6 and other figures, the razor head 3 comprises a blade assembly 4, an elastic support 5, and a connection portion 6.

[0063] <Blade assembly 4> The blade assembly 4 includes five blade bodies 41 and a frame body 42 that holds these blade bodies 41. The blade bodies 41 extend along the y-axis. The end faces of the blade bodies 41 on the front side are exposed to the front side as cutting edges. The surfaces including the cutting edges of the multiple blade bodies 41 become the skin contact surfaces that come into contact with the skin of the user. The blade bodies 41 are biased toward the front side to prevent excessive pressure from being applied to the skin of the user. The number of blade bodies 41 can be changed as desired.

[0064] The frame 42 is formed of a hard resin such as ABS resin, but is not limited to this. The frame 42 in this embodiment is formed by connecting multiple members. However, the frame 42 may be formed of a single member. The frame 42 has an opening that is open on the front side, and the cutting edge of the blade 41 is exposed from the opening. A restricting portion 43 is provided on the back side of the frame 42, extending toward the back side. The restricting portion 43 restricts the blade assembly 4 from tilting beyond a certain amount.

[0065] <Elastic support 5> The elastic support 5 is made of a flexible material such as soft resin or rubber, and includes a connecting portion 5c, a flexible portion 5b, and a pair of left and right connecting portions 5d. The elastic support 5 is provided on the back side of the blade assembly 4. The connecting portion 5c of the elastic support 5 is located on the back side of the center of the blade assembly 4 and is connected to the blade assembly 4. A pair of flexible portions 5b extend from the connecting portion 5c toward the left and right. The pair of flexible portions 5b are connected to the frame 42 by the left and right connecting portions 5d. The left and right connecting portions 5d are fixed to the frame 42, and the connecting portion 5c is connected to the frame 42 so as to be tiltable mainly in the xz plane. The flexible portions 5b of the elastic support 5 are deflected, so that the blade assembly 4 can be tilted relative to the attachment body 2, and the skin contact surface of the blade 41 is tilted, so that the razor 1 can perform a swing function.

[0066] The upper end portion 5a, which is the upper end surface of the elastic support 5, is an inclined surface that inclines downward toward the front side. The inclined blade assembly 4 is restricted from tilting by abutting against the upper end portion 5a of the elastic support 5. In other words, the upper end portion 5a of the elastic support 5 serves as a tilt restriction mechanism that restricts the blade assembly 4 from tilting beyond a certain level. As shown in FIG. 7, the inclined surface of the upper end portion 5a of the elastic support 5 has an inclination angle that makes surface contact with the abutment surface 42a of the blade assembly 4 when it abuts against the blade assembly 4.

[0067] <Connection 6> The connection part 6 includes a main body part 61, a guide part 62, a cantilever spring 63, an engagement / disengagement part 64, an operation part 65, and a plate part 66. The guide part 62, the cantilever spring 63, the engagement / disengagement part 64, and the operation part 65 are inserted into the connection hole 25 when the razor head 3 is connected to the attachment body 2. The connection part 6 is formed of a hard resin such as ABS resin. The connection part 6 is preferably formed of a single member, but at least the cantilever spring 63 and the engagement / disengagement part 64 are formed to be elastically deformable.

[0068] The main body portion 61 is a portion of the connection portion 6 located on the upper and front side, and is connected to the elastic support 5 and also to the guide portion 62. The guide portion 62 is located below the main body portion 61 and extends toward the back side. The guide portion 62 and the cantilever spring 63 are provided such that their respective front end portions do not protrude beyond the front edge portion 26 of the mounting body 2. In other words, in the connection portion 6, components other than the main body portion 61 do not protrude beyond the front edge portion 26 of the mounting body 2.

[0069] The guide portion 62 includes an upper plate portion 62a, a right plate portion 62b, and a left plate portion 62c. The guide portion 62 has a U-shaped cross section in the xy plane formed by the upper plate portion 62a, the right plate portion 62b, and the left plate portion 62c. The front side portion of the guide portion 62 is formed to extend downward more than the rear side portion. The rear side of the guide portion 62 in this embodiment has an open shape, but it may have a shape having a bottom surface. However, if the rear side of the guide portion 62 has an open shape, there is no bottom surface at a position facing the operating portion 65, which allows the operating portion 65 to be largely elastically deformed, which may make it easier to attach and detach the razor head 3 to and from the attachment body 2. The upper plate portion 62a, the right plate portion 62b, and the left plate portion 62c of the guide portion 62 face the inner surface of the connecting hole 25, and may abut against it in some cases. When the razor head 3 moves in the x-axis or y-axis direction relative to the attachment body 2, the guide portion 62 comes into contact with the inner surface of the connecting hole 25, thereby restricting the movement. Similarly, when the razor head 3 rotates in the xy plane about the z-axis relative to the attachment body 2, the guide portion 62 comes into contact with the inner surface of the connecting hole 25, thereby restricting the rotation.

[0070] The plate-shaped portion 66 is formed as a pair, protruding from the right plate portion 62b and the left plate portion 62c of the guide portion 62 in the right and left directions, respectively. The front surface of the plate-shaped portion 66 forms a plane parallel to the xy plane together with the front end surfaces of the right plate portion 62b and the left plate portion 62c. The rear surface 66a of the plate-shaped portion 66 faces the front step surface 26a that is recessed from the front edge portion 26 of the attachment body 2 to the rear side. When the razor head 3 is connected to the attachment body 2, the rear surface 66a of the plate-shaped portion 66 abuts against the front step surface 26a. The abutment of the rear surface 66a and the front step surface 26a restricts the movement of the razor head 3 in the z-axis direction relative to the attachment body 2, and the attachment body 2 and the razor head 3 are stably connected without rattling in the z-axis direction.

[0071] In the configuration of this embodiment, as described above, the plate-shaped portion 66 abuts against the mounting body 2 in the z-axis direction, thereby restricting movement of the razor head 3 relative to the mounting body 2 in the z-axis direction. However, the mounting body 2 and the razor head 3 may also abut in the z-axis direction at different parts.

[0072] The cantilever spring 63 is provided below the lower end of the blade assembly 4 in the vertical direction (x-axis direction), and a part of the front end is bridged between the right plate portion 62b and the left plate portion 62c. The cantilever spring 63 is formed to extend toward the rear side. The front end of the cantilever spring 63 is a fixed end, and the rear end is a free end. An operating portion 65 extending in the vertical direction is provided at the rear end, which is the free end of the cantilever spring 63. An engaging / disengaging portion 64 is provided below the operating portion 65. The lower surface of the engaging / disengaging portion 64 faces the connection surface 22, and is provided so as not to protrude from the rear opening 25a of the connecting hole 25 to the rear side. That is, the side surface (y-axis surface) of the lower end 64a of the engaging / disengaging portion 64 is covered by the mounting body 2.

[0073] The rear surface of the operating portion 65 curves inwardly toward the upper side, and the vicinity of the upper end portion serves as a pressing surface 65a. At least the pressing surface 65a of the operating portion 65 is exposed to the rear side of the connecting hole 25. The operating portion 65 is formed to be longer in the vertical direction than in the horizontal direction.

[0074] <Attachment and detachment operation of the attachment body 2 and the razor head 3> 5, when the user presses the pressing surface 65a toward the z-axis negative side in the locked state in which the connection portion 6 is inserted into the connecting hole 25 and locked, the operation portion 65 and the cantilever spring 63 are elastically deformed, and the pressing surface 65a moves toward the z-axis negative side, while the lower end 64a of the engaging / disengaging portion 64 moves toward the x-axis positive side while inclining toward the z-axis positive side. As a result, the engaging / disengaging portion 64 is shifted toward the x-axis positive side (upper side) relative to the step surface 23 in the x-axis direction, and the engaging / disengaging portion 64 climbs over the step surface 23 to the z-axis negative side (front side), thereby releasing the locked state of the cantilever spring 63 and the engaging / disengaging portion 64 and entering an unlocked state.

[0075] On the other hand, when connecting the razor head 3 to the attachment body 2 in an unlocked state in which the connection part 6 of the razor head 3 is disengaged from the connecting hole 25 as shown in Fig. 6, the user inserts the guide part 62, the cantilever spring 63, the engaging / disengaging part 64, and the operating part 65 of the razor head 3 into the connecting hole 25. At this time, the lower end 64a of the engaging / disengaging part 64 abuts against the inclined surface of the lower surface 24 of the hole, and the upper plate part 62a of the guide part 62 abuts against the upper surface 27 of the hole, so that the cantilever spring 63 bends toward the x-axis + side (upper side) and the engaging / disengaging part 64 moves toward the x-axis + side. Furthermore, when the cantilever spring 63 and the engaging / disengaging portion 64 are inserted into the z-axis + side (rear side) and the engaging / disengaging portion 64 moves over the step surface 23 to the z-axis + side (rear side), the cantilever spring 63, which has been bent toward the x-axis + side (upper side), moves toward the x-axis - side (lower side) due to the biasing force, and the engaging / disengaging portion 64 also moves toward the x-axis - side (lower side). This results in an engaged state in which the engaging / disengaging portion 64 and the cantilever spring 63 are engaged with the step surface 23. This results in an engaged state as shown in FIG. 5, and the attachment body 2 and the razor head 3 are connected to each other.

[0076] <Pivoting Operation of the Blade Assembly 4 with Respect to the Mounting Body 2> As already described, the razor 1 of this embodiment allows the blade assembly 4 to perform a swinging motion in which the blade assembly 4 tilts relative to the attachment body 2. The flexible portion 5b of the elastic support 5 of the blade assembly 4 elastically deforms so that the skin contact surface of the blade 41 is parallel to the surface on which it abuts. The range of the tilt angle of the blade assembly 4 is determined by the abutment surface between the regulating portion 43 and the main body 61 and the abutment surface 42a between the upper end 5a of the elastic support 5 and the frame 42. As shown in FIG. 5, when the regulating portion 43 abuts against the main body 61, the upper end of the blade assembly 4 is restricted from further tilting downward, i.e., in the counterclockwise direction in FIG. 5. As shown in FIG. 7, when the abutment surface 42a on the back side of the frame 42 abuts against the upper end 5a of the elastic support 5, the lower end of the blade assembly 4 is restricted from further tilting upward, i.e., in the clockwise direction in FIG. 7.

[0077] <2. Modifications> The razor 1 described in the above embodiment, and the attachment body 2 and razor head 3 constituting the razor 1 can be modified in any manner without departing from the spirit of the invention. Some modified examples of the embodiment of the present invention will be described below.

[0078] <Variation 1> The mounting body 2 may be an mounting body 2m having a connecting hole 25m as shown in FIG. 9, instead of the configuration having the connecting hole 25 as in the embodiment.

[0079] The mounting body 2m has a surface portion 2b instead of the protrusion 2a of the mounting body 2. The surface portion 2b is a planar portion that protrudes from the surface of the connecting hole 25m on the z-axis + side toward the z-axis - side. The surface portions 2b are provided at positions facing each other in the y-axis direction. The surface portions 2b may be in surface contact with the rear end surfaces 6a of the right plate portion 62b and the left plate portion 62c of the razor head 3 when the razor head 3 is connected to the mounting body 2m.

[0080] <Variation 2> The razor 1 of the embodiment can be configured as a modified example shown in FIG.

[0081] The razor 1m shown in FIG. 10 includes an attachment body 2n instead of the attachment body 2 of the embodiment. The attachment body 2n has a connecting clip 71 that is detachably connected to another rod-shaped member 72 by gripping the rod-shaped member 72. The connecting clip 71 is provided at the lower end of the attachment body 2n. The connecting clip 71 is configured such that a pair of clamping parts 71a biased in the closing direction by a spring can be opened and closed by operating an operating part 71c that serves as a force point, and thus the rod-shaped member 72 can be clamped by the lower end 71b of the clamping parts 71a. Any member can be used as the rod-shaped member 72 as long as it has a diameter that can be clamped by the clamping parts 71a. The upper end of the clamping parts 71a opens and closes in accordance with the lower end 71b.

[0082] <Variation 3> The razor 1 of the embodiment can be configured as a modified example shown in FIG.

[0083] The razor 1n shown in FIG. 11 includes an attachment body 2o instead of the attachment body 2 of the embodiment. The attachment body 2o has a connecting cap 73 that is detachably connected to another rod-shaped member 72 by inserting the rod-shaped member 72. The connecting cap 73 is a cylindrical member having an insertion hole 73b at the lower end and has a slit 73a formed from the lower end toward the upper side. The rod-shaped member 72 is inserted into the insertion hole 73b at the lower end. The inner diameter of the insertion hole 73b of the connecting cap 73 can be arbitrarily changed depending on the diameter of the rod-shaped member 72 to be connected, but may be a size corresponding to the diameter of a pencil, for example. The inner diameter of the insertion hole 73b of the connecting cap 73 may become smaller toward the upper side. The attachment body 2o and the rod-shaped member 72 are connected by inserting the rod-shaped member 72 from the insertion hole 73b at the lower end of the connecting cap 73. The connecting cap 73 has the slit 73a, so that the rod-shaped member 72 having a diameter slightly larger than the inner diameter of the insertion hole 73b can be inserted and connected. Note that the slit 73a is not an essential component of the connecting cap 73, and the slit 73a may be omitted.

[0084] The connecting mechanism for connecting to the rod-shaped member is not limited to those described in the above-mentioned modified examples 2 and 3, and other configurations may be adopted. For example, a magnet, a hook-and-loop fastener, a screw connection, or a band wrapping configuration may be adopted as the connecting mechanism.

[0085] In the razors 1m and 1n of the modified examples 2 and 3, the attachment bodies 2n and 2o may be connected to the razor head 3 in a non-detachable manner, rather than in a detachable manner. In other words, the attachment bodies 2n and 2o may be formed integrally with the razor head 3.

[0086] <Modification 4> The razor 1 of the embodiment can be configured as a modified example shown in FIG.

[0087] The razor 1o shown in FIG. 12 includes a razor head 3m and an attachment body 2p. The razor head 3m has a connecting portion 6m instead of the connecting portion 6. The connecting portion 6m has magnets 67a and 67b arranged near its upper and lower ends. The attachment body 2p is entirely made of a ferromagnetic metal or the like and has a connecting hole 25n. When connecting the razor head 3m to the attachment body 2p, the operating portion 65m of the razor head 3m is inserted into the connecting hole 25n of the attachment body 2p, and the magnets 67a and 67b are brought into contact with the attachment body 2p, so that the attachment body 2p and the magnets 67a and 67b are attracted to each other and connected to each other. When removing the razor head 3m from the attachment body 2p, the user presses the end of the operating portion 65m with a force greater than or equal to the attraction force between the attachment body 2p and the magnets 67a and 67b, so that the magnets 67a and 67b are separated from the attachment body 2p.

[0088] In the fourth modification, only the portion of the mounting body 2p facing the magnets 67a and 67b may be made of a ferromagnetic metal, and the other portion may be made of another material. Alternatively, the portions facing the magnets 67a and 67b may be provided with magnets that attract the magnets 67a and 67b, respectively. Alternatively, the mounting body 2p may be provided with a magnet, and the connecting portion 6m may be provided with a ferromagnetic metal portion or the like instead of the magnets 67a and 67b. In this case, the connecting portion 6m may be entirely made of a ferromagnetic material.

[0089] Furthermore, the razor head 3 in the embodiment has the elastic support 5 and has a swivel function, but the razor head 3 does not necessarily have to have a swivel function.

[0090] In the embodiment, the connecting hole 25 may be formed to cover the side (the surface in the y-axis direction) of the guide portion 62 and the cantilever spring 63 on the front side so that the guide portion 62 and the cantilever spring 63 are not exposed on the front side below the lower end of the blade assembly 4.

[0091] The attachment body 2 in the embodiment functions as a gripping part, but the attachment body 2 may be attached to another member so as to function as a gripping part together with the member.

[0092] The attachment body 2 of the embodiment may be molded by a 3D printer using 3D data for the 3D printer. In this case, molding of the attachment body 2 by the 3D printer is performed, for example, by a process of discharging a material such as a liquid resin for forming the attachment body 2 based on input and stored data for the 3D printer, and a process of solidifying the discharged material. The present invention includes design data for a 3D printer for molding the attachment body 2 described in such an embodiment, a recording medium storing the design data, and a method for molding the attachment body 2.

[0093] It should be noted that the razor described in the embodiment and modified examples is merely one example configuration, and the scope of the present invention is not limited to these embodiments and modified examples, but is to be broadly interpreted to the extent that a person skilled in the art can grasp based on similar technical ideas.

[0094] <3. Features of the present invention> The present invention described above by exemplifying the embodiments has the following features. In the following description, for convenience, there are some parts that cite the "razor 1" and the "attachment 2" described in the embodiments, but the description is not limited to the razor 1 and the attachment 2 of the embodiment, and includes the razors 1m-1o and the attachments 2m-2p of the modified examples. Similarly, the configurations other than the razor 1 and the attachment 2 are limited to the configurations of the embodiment and do not exclude the configurations of the modified examples.

[0095] Conventionally, the attachment body (including the grip part) for detachably connecting the razor head has a shape elongated in the horizontal direction, which is the direction in which the blade extends, and therefore has a configuration that necessarily has a connection hole that is long in the horizontal direction. However, when the connection hole of the attachment body is long in the horizontal direction, the corresponding part of the attachment body is also long in the horizontal direction, so that the attachment body may hinder the rotation of the razor head when the razor head rotates (tilts) around the axis in which the attachment body (grip part) extends to perform a swinging motion. In the configuration of the embodiment, the connection hole 25 of the attachment body 2 is intentionally made longer in the vertical direction than in the horizontal direction, so that it is possible to prevent the attachment body 2 from hindering the rotation of the razor head 3 when the razor head 3 rotates (tilts) around the axis in which the attachment body 2 extends to perform a swinging motion.

[0096] In addition, in the razor 1, the operating part 65 protrudes from the connecting hole 25 on the opposite side to the blade 41 side, so that the user can easily detach the razor head 3 from the attachment body 2 by operating the operating part 65. In addition, since the connecting hole 25 has a shape long in the vertical direction, the operating part 65 can also be made long in the vertical direction. In this way, when the operating part 65 is long in the vertical direction, the direction in which the index finger or thumb of the hand holding the razor 1 extends and the vertical direction of the vertically long operating part 65 are the same as the direction in which the grip part of the razor 1 extends, making it easier for the user to operate it, compared to when the operating part 65 is long in the horizontal direction. In addition, when the attachment body 2 (grip part) is gripped and the operating part 65 is operated with the index finger or thumb, the shape makes it easy for the user to transmit force to the operating part 65, so that the razor head 3 can be detached from the attachment body 2 with a lighter force.

[0097] In a conventional razor having an attachment body (including a grip portion) for detachably connecting a razor head, the portion for engaging and connecting the razor head is close to the hand and skin, so that the razor head may suddenly fall off the attachment body. In contrast, in the razor 1 of the present invention, the step surface 23 for engaging the engaging and disengaging portion 64 is provided inside the connecting hole 25 which is recessed from the outer edge surface 21 of the attachment body 2. Therefore, the engaging and disengaging portion 64 is not exposed from the connecting hole 25, and even if the user's hand or skin suddenly comes into contact with the operating portion 65, the movement of the engaging and disengaging portion 64 is restricted inside the connecting hole 25, so that the engaging and disengaging portion 64 is prevented from being released from the engaging and disengaging portion 64. This makes it possible to provide a razor 1 that can prevent the razor head 3 from suddenly falling off while facilitating the operation of attaching and detaching the razor head 3 by the configuration of the cantilever-shaped spring 63 and the operating portion 65 of the razor head 3.

[0098] Furthermore, in the razor 1, the connecting hole 25 is formed so as to cover the entire portion of the engaging / disengaging part 64 facing the connection surface 22 in the lateral direction (y-axis direction). With this configuration, the sides of the engaging / disengaging part 64 are covered by the connecting hole 25, so that even if the user accidentally touches the operating part 65 during use, it is possible to more effectively prevent the razor head 3 from falling off due to the engaging / disengaging part 64 moving and releasing the lock.

[0099] In a modified version of the razor 1, the lower end of the attachment 2 may further include a connecting mechanism for connecting to the rod-shaped member 72. With this type of razor 1, it becomes possible to use other rod-shaped members as the grip, instead of the grip dedicated to the razor. For example, the rod-shaped member 72 may be made of worn-out chopsticks, toothbrushes, writing implements, or wood. By using such worn-out rod-shaped members 72 together with the attachment 2, it becomes possible to use objects around the user as the grip of the razor. This eliminates the need to create a grip dedicated to the razor, making it possible to reduce the use of resources.

[0100] The razor 1 also includes a guide portion 62 and a cantilever spring 63, and an operating portion 65 is provided on the free end side of the cantilever spring 63. This configuration allows the razor head 3 to be attached to and detached from the attachment body 2 by changing the engagement state of the engagement / detachment portion 64 using the elastic deformation of the cantilever spring 63, making it relatively easy to configure the configuration.

[0101] Furthermore, in the razor 1, the cantilever spring 63 is provided below the lower end of the blade assembly 4. This configuration makes it possible to increase the distance between the connecting portion of the operating part 65 and the cantilever spring 63 and the pressing surface 65a of the operating part 65, thereby making it possible to increase the distance from the point of force to the fulcrum during operation, and thus making it possible to attach and detach the razor head 3 to and from the attachment body 2 with less force.

[0102] In addition, in the razor 1, the razor head 3 is provided with an elastic support 5 having a connecting portion 5c and a pair of flexible portions 5b. With this configuration, the swivel function is provided on the razor head 3 side, and there is no need to provide a swivel function on the attachment body 2, so that the entire attachment body 2 can be made relatively simple in configuration while providing a razor with a swivel function. Therefore, it is easy to configure the attachment body 2 with a single material, which has characteristics such as being less likely to break and being able to be used for a long time, being easy to recycle after use, and making effective use of resources. In addition, by publishing or distributing the design drawing of the attachment body 2 or the data for manufacturing the attachment body 2 with a 3D printer, it becomes relatively easy for individuals to manufacture the attachment body 2 independently, which eliminates waste of resources. In addition, since the attachment body 2 does not necessarily have to be dedicated to a razor, it is easy to configure it to function as a razor just by providing the attachment body 2 on the lever part of a long-handled razor or nail clippers, for example.

[0103] Furthermore, the razors or attachments of the second and third variations are configured to include a connecting mechanism for connecting to a rod-shaped member 72 that is not formed as a dedicated item for the razor or attachment. This configuration allows the razor to be used by replacing a rod-shaped member such as a worn-out chopstick, toothbrush, writing implement, or piece of wood with the razor. By using such a worn-out rod-shaped member together with the attachment, it becomes possible to use something around the user as the razor's handle. This eliminates the need to create a handle specifically for the razor, making it possible to reduce the use of resources.

[0104] For example, in the mounting body 2n as in variant example 2, by configuring the mounting body 2n to have a clamping portion 71a like the connecting clip 71, it becomes possible to use a rod-shaped member having a relatively wide range of diameter sizes in place of the gripping portion.

[0105] For example, in the mounting body 2o of variant example 3, by configuring the connecting cap 73 to have an insertion hole 73b, it is possible to use a rod-shaped member that is not specifically for a razor in place of the gripping portion of the razor with a simple configuration. [Industrial Applicability]

[0106] The razor of the present invention is suitably used as a razor that contributes to environmental protection. [Explanation of symbols]

[0107] 1, 1m, 1n, 1o...Razor 2, 2m, 2n, 2o, 2p...Mounting body 21...Outer edge surface 22…Connection surface 23…Step surface 24…Bottom surface inside the hole 25, 25m, 25n…Connecting hole 26…Edge 26a…Front step surface 27…Top surface inside the hole 3, 3m…Razor head 4…Blade assembly 41...Blade body 42...Frame 42a…Abutment surface 43…Regulation Department 5...Elastic support 5a...Top end 5b...Flexible part 5c...Connection part 5d...Left and right connection part 6, 6m…Connection 61…Main part 62…Information Department 62a…Upper plate 62b…Right plate 62c…Left plate part 63...Cantilever spring 64…Engagement / disengagement part 65, 65m...Operation unit 65a…Pressing surface 66…Plate-shaped part 67a, 67b...Magnet 71…Connecting clip 72... Rod-shaped member 73…Connected cap

Claims

1. A razor head attachment having a connection hole for removably connecting a razor head, The connecting hole is a through hole into which a connecting portion of the razor head is inserted, A cross section of the connecting hole in a plane perpendicular to the insertion direction of the connecting portion into the connecting hole is formed such that a length in a vertical direction perpendicular to the extension direction of the blade body held by the razor head is greater than a length in a horizontal direction perpendicular to the extension direction of the blade body. Razor head mounting body.

2. The connecting hole is formed such that an operating portion that is operated when the razor head is detached from the connecting hole when the razor head is in a connected state with the attachment body protrudes from an opening on the opposite side of the connecting hole from the blade body side.

2. A razor head attachment as claimed in claim 1.

3. The connecting hole has a step surface recessed from an outer edge surface of the mounting body, the step surface being capable of engaging an engaging / disengaging part that changes between an engaging state in which the razor head can be engaged with the connecting hole by operating the operating part and an unlocking state in which the razor head can be released from the connecting hole.

3. A razor head attachment as claimed in claim 2.

4. The connecting hole has a connecting surface that connects the outer edge surface and the step surface, and is formed so as to cover the entire portion of the engaging / disengaging portion that faces the connecting surface in the extending direction of the blade body.

4. A razor head attachment as claimed in claim 3.

5. Further comprising a connecting mechanism provided at the lower end for connecting with the rod-shaped member. A razor head mounting assembly according to any one of claims 1 to 4.

6. A razor comprising a razor head and a mounting body for the razor head having a connecting hole for detachably connecting the razor head, The razor head comprises: a blade assembly for holding a blade; a connection portion that is inserted into the connecting hole, The connecting hole is a through hole into which the connecting portion is inserted, A cross section of the connecting hole in a plane perpendicular to the insertion direction of the connecting portion into the connecting hole is formed such that a length in a vertical direction perpendicular to the extension direction of the blade body held by the razor head is greater than a length in a horizontal direction perpendicular to the extension direction of the blade body. razor.

7. the connecting portion includes an operating portion provided on the opposite side to the exposed side of the blade body, the operating portion being operated when removing the razor head from the connecting hole, The connecting hole is formed so that the operating part protrudes from an opening on a side of the connecting hole opposite to the blade body side when the razor head and the attachment body are connected to each other.

7. The razor of claim 6.

8. The connecting portion further includes an engaging portion that changes between an engaging state in which the razor head can be engaged with the connecting hole and an unlocking state in which the razor head can be released from the connecting hole by operating the operating portion, The connecting hole has a stepped surface recessed by one step from an outer edge surface of the mounting body, the stepped surface being capable of engaging the engaging / disengaging portion.

8. The razor of claim 7.

9. The connection portion is A guide portion extending on the opposite side to the exposed side of the blade body and held by the mounting body; and a cantilever spring extending opposite the exposed side of the blade. The operating portion is provided on a free end side of the cantilever spring.

9. The razor of claim 8.

10. The cantilever spring is provided below the lower end of the blade assembly.

10. The razor of claim 9.

11. The connecting hole has a connecting surface that connects the outer edge surface and the step surface, and is formed so as to cover the entire portion of the engaging / disengaging portion that faces the connecting surface in the extending direction of the blade body. A razor according to any one of claims 8 to 10.

12. The mounting body further includes a connecting mechanism provided at a lower end thereof for connecting with a rod-shaped member. A razor according to any one of claims 6 to 11.

13. The razor head further includes an elastic support provided on an opposite side to the exposed side of the blade, The elastic support is A connecting portion that connects the blade assembly and the connecting portion; A pair of flexible portions are provided extending from the connecting portion in the left-right direction along the extension direction of the blade body, and end portions are connected to the blade assembly. A razor according to any one of claims 6 to 12.

14. A razor head that is removably connected to a connection hole of a mounting body of the razor head, a blade assembly for holding a blade; a connection portion that is inserted into the connecting hole, the connecting portion has an operating portion provided on the opposite side to the exposed side of the blade body, the operating portion being operated when removing the razor head from the connecting hole, The operating portion is formed so that the length in a vertical direction perpendicular to the extending direction of the blade body is greater than the length in a horizontal direction which is the extending direction of the blade body. Razor head.

15. The operating portion protrudes from an opening of the connecting hole on a side opposite to the blade body side when the razor head and the attachment body are connected to each other.

15. A razor head according to claim 14.

16. The connecting portion further includes an engaging portion that changes between an engaging state in which the razor head can be engaged with the connecting hole and an unlocking state in which the razor head can be released from the connecting hole by operating the operating portion. A razor head according to claim 14 or 15.

17. The connection portion is A guide portion extending on the opposite side to the exposed side of the blade body and held by the mounting body; and a cantilever spring extending opposite the exposed side of the blade. The operating portion is provided on a free end side of the cantilever spring.

17. A razor head according to claim 16.

18. The cantilever spring is provided below the lower end of the blade assembly.

18. A razor head according to claim 17.

19. The blade further includes an elastic support provided on the opposite side to the exposed side of the blade body, The elastic support is A connecting portion that connects the blade assembly and the connecting portion; A pair of flexible portions are provided extending from the connecting portion in the left-right direction along the extension direction of the blade body, and end portions are connected to the blade assembly. A razor head according to any one of claims 14 to 18.

20. A razor head attachment for connection to a razor head holding a blade, comprising: A connecting mechanism for connecting with a rod-shaped member not formed for the mounting body is provided. Razor head mounting body.

21. The connecting mechanism has a clamping portion that clamps the rod-shaped member.

21. A razor head mount according to claim 20.

22. The connecting mechanism has an insertion hole into which the rod-shaped member is inserted.

21. A razor head mount according to claim 20.

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