Razor assembly

Abstract

To provide a razor assembly which provides stable rotational motion.SOLUTION: A razor assembly 100 comprises: a razor cartridge 6 including a shaving blade and a blade housing 10; a connecting head 20 of which one side is detachably combined with the blade housing 10; a razor handle 30 which is so combined with the connecting head 20 as to be rotatable around a rotary shaft perpendicular to a lateral direction; and a resilience provision part 4 including a rotary magnet 40 which is located on the other side of the connecting head and is rotatable around the rotary shaft together with the connecting head, and a stationery magnet 45 which is fixed to the razor handle and is so located that an attraction force acts on the rotary magnet 40 from a neutral position. The rotary magnet 40 and the stationery magnet 45 provide resilience for returning the connecting head to the neutral position when the connecting head 20 is rotated around the rotary shaft from the neutral position.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present disclosure relates to a razor assembly.

Background Art

[0002] The content described in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] Generally, a conventional razor assembly known as a wet razor includes a razor cartridge and a razor handle. The razor cartridge includes a blade housing, a guard bar, a cap, and at least one shaving blade disposed between the guard bar and the cap.

[0004] The razor cartridge is configured to be rotatable about the razor handle between a neutral position and a pivoted position. The pivoting movement of the razor cartridge is basically performed about a pivot axis (hereinafter also referred to as the "parallel axis") parallel to the alignment direction of the shaving blade.

[0005] The pivoting movement about the parallel axis supports efficient shaving by allowing the blade of the razor to smoothly contact a cutting surface, such as the skin of the user.

[0006] On the other hand, recently, multi-axis pivoting razors have been developed that, in addition to the pivoting function about the parallel axis, also have a pivoting function about a pivot axis perpendicular to the parallel axis (hereinafter also referred to as the "vertical axis").

[0007] The multi-axis pivoting razor allows the shaving blade to more smoothly contact the user's skin along the profile of the user's skin by configuring the razor cartridge to be rotatable about two or more axes.

[0008] However, in order to provide a multi-axis rotation function, the rotation structure of a multi-axis rotary shaver tends to become somewhat complex, which results in a problem that the rotation structure becomes somewhat fragile.

[0009] Therefore, in order to provide a multi-axis rotation function centered on two or more axes, the actual situation is that it is necessary to develop a new, simple and stable rotation structure.

Prior Art Documents

Patent Documents

[0010]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0011] The technical problem to be solved by the present invention is to provide a shaver assembly that reliably and stably provides a rotational movement of a rotation axis perpendicular to an axis parallel to the arrangement direction of shaving blades.

[0012] Another technical problem to be solved by the present invention is to provide a shaver assembly that has a simpler structure for the rotational movement of the rotation axis and does not deform even after long-term use.

[0013] It should be noted that the technical problems of the present invention are not limited to the technical problems mentioned above. Another technical problem not mentioned will be clearly understood by those skilled in the art from the following description.

Means for Solving the Problems

[0014] One embodiment of the present invention includes a shaving cartridge including at least one shaving blade having a cutting edge and a blade housing in which the at least one shaving blade is laterally accommodated, a connecting head detachably coupled to the blade housing on one side, a head adapter rotatably coupled to the connecting head about a rotation axis perpendicular to the lateral direction, and a shaving handle including a grip portion extending from the head adapter, one or more rotating magnets disposed on the other side of the connecting head and rotatable about the rotation axis together with the connecting head, and a restoring force providing unit including one or more fixed magnets fixed to the shaving handle and arranged to apply an attractive force to the rotating magnets from a neutral position. A shaving assembly is provided.

[0015] On the other hand, the rotating magnet and the fixed magnet are configured to provide a restoring force that returns the connecting head to the neutral position when the connecting head rotates about the rotation axis from the neutral position.

Advantages of the Invention

[0016] According to the shaving assembly according to the present invention, there is an advantage that the rotation operation of the rotation axis perpendicular to the axis parallel to the arrangement direction of the shaving blades can be reliably and stably provided.

[0017] Further, according to the shaving assembly according to the present invention, the shaving performance is improved by the shaving blade smoothly adhering to the profile of the user's skin during shaving.

Brief Description of the Drawings

[0018]

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Mode for Carrying Out the Invention

[0019] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When adding reference numerals to the components of each drawing, it should be noted that for the same components, as much as possible, the same numerals are used even if they are shown on other drawings. Also, in describing the present invention, when it is determined that the specific description of related known configurations or functions obscures the gist of the present invention, the detailed description thereof is omitted.

[0020] When describing the components of the embodiments according to the present invention, signs such as first, second, i), ii), a), b), etc. may be used. Such signs are for distinguishing the components from other components, and the essence, order, sequence, etc. of the corresponding components are not limited by the signs. When a certain part of the specification states that a component "includes" or "comprises", this means that, unless explicitly stated to the contrary, it does not exclude other components but may further include other components.

[0021] FIG. 1 is a plan view of the razor assembly 100 according to the first embodiment of the present disclosure as seen from the front of the razor handle 30. Here, the front of the razor handle 30 means the direction in which the front of the blade housing 10 faces.

[0022] Referring to FIG. 1, the razor assembly 100 includes a razor cartridge 6, a connecting head 20, and a razor handle 30.

[0023] The razor cartridge 6 includes a blade housing 10, a guard bar 1, a lubricating band 3, a shaving blade 5, and clips 7a, 7b.

[0024] At one end of the shaving blade 5, a cutting edge capable of cutting the user's hair is formed, and the other end of the shaving blade 5 of the razor is configured to fit within a seating portion (not shown) formed in the blade housing 10. At this time, one or more shaving blades 5 are accommodated on the seating portion of the blade housing 10.

[0025] The direction in which the shaving blade 5 fits into the seating portion is the lateral direction d1 perpendicular to the shaving direction. Here, the shaving direction means the direction in which the blade housing 10 moves along the user's skin when the user shaves using the razor assembly 100.

[0026] The shaving blade 5 is a one-piece blade or a welded blade.

[0027] The one-piece blade includes a base portion, a bent portion, and a cut portion. In the one-piece blade, the base portion, the bent portion, and the cut portion are integrally formed.

[0028] The base portion fits into the seating portion of the blade housing 10, and the bent portion extends bent from the base portion. One end of the cut portion extends from the bent portion, and a cutting edge is provided at the other end of the cut portion.

[0029] The welded blade includes a metal support portion and a cut portion. In the welded blade, the metal support portion and the cut portion are configured as separate members.

[0030] The metal support part includes a base part that fits into the mounting part of the blade housing 10 and a bent part that bends and extends from the base part. One end of the cutting part is welded to the bent part, and the other end of the cutting part is provided with a cutting edge.

[0031] The shaving blade 5 is generally an integral blade or a welded blade, but the present invention is not limited thereto. For example, the shaving blade 5 may be a straight blade that does not include a bent region.

[0032] The shaving blade 5 is made of a material such as stainless steel, a metal alloy, or ceramic.

[0033] The clips 7a, 7b fix both ends of the cutting edge of the shaving blade 5 to the blade housing 10. Thereby, it is possible to prevent the shaving blade 5 from detaching from the blade housing 10.

[0034] The clips 7a, 7b are generally made of a metal material such as aluminum, but are not limited thereto. For example, the clips 7a, 7b can also be made of a material such as synthetic resin, synthetic fiber, or ceramic.

[0035] One end of the clips 7a, 7b is inserted into a through hole (not shown) formed in the cartridge frame, and the other end of the clips 7a, 7b is configured to wrap one side of the blade housing 10 in a state of wrapping the cutting edge of the shaving blade 5.

[0036] However, the method of fixing the shaving blade 5 via the clips 7a and 7b is not limited to this. For example, both ends of the clips 7a and 7b can be configured to wrap around both sides of the blade housing 10 respectively, or both ends of the clips can be configured to penetrate through through-holes formed in the blade housing 10 respectively. Also, without a separate fixing member such as the clips 7a and 7b, it can also be a fixing method in which both side portions of the shaving blade 5 are respectively sandwiched by fixing grooves (not shown) formed on the blade housing 10.

[0037] The guard bar 1 is disposed below the blade housing 10 so that it can contact the user's skin in front of the shaving blade 5 when shaving the beard. As a result, the guard bar 1 pulls the user's skin in the direction in which the shaving proceeds before the hair is cut by the shaving blade 5.

[0038] When the user's skin is pulled by the guard bar 1, the user's hair can stand up in a direction perpendicular to the user's skin surface, which makes it easier to cut the hair by the shaving blade 5.

[0039] The guard bar 1 is made of plastic or rubber, but is not limited thereto. For example, the guard bar 1 may be in a form in which a part made of rubber is partially formed on a frame made of a plastic material.

[0040] The lubricating band 3 has the role of applying a lubricating substance to the user's skin after cutting, smoothing the rough skin caused by cutting, and making the glide of the razor assembly 100 smooth.

[0041] The lubricating band 3 can be provided with a flexible material, a porous material with water absorption, or a hair removal aid.

[0042] The lubricating band 3 expands when it comes into contact with water and provides a water-soluble substance containing a lubricating component, a skin-soothing component, etc. to the user's skin.

[0043] Although the lubricating band 3 has been illustrated as being disposed above the blade housing 10, the present invention is not limited thereto. For example, the lubricating band 3 can also be disposed adjacent to the guard bar 1 below the blade housing 10, or can be disposed on both the upper and lower sides of the blade housing 10.

[0044] The razor handle 30 includes a head adapter 32 and a grip portion 33.

[0045] The head adapter 32 is a region on the razor handle 30 where it couples with the connecting head 20. The head adapter 32 includes a storage space (E in FIG. 5) for housing the connecting head 20.

[0046] The gripping member 33 is a region on the razor handle 30 that can be gripped by the user. The grip portion 33 extends from the head adapter 32.

[0047] The razor handle 30 may be integrally formed, but is not limited thereto. For example, the razor handle 30 can also be made of a plurality of sections divided in the length direction of the razor handle 30.

[0048] The connecting head 20 fits into the head adapter 32 and is configured to be rotatable about a second axis ax2.

[0049] FIG. 2 is a rear view of the razor assembly 100 according to the first embodiment of the present disclosure as seen from the back of the razor handle 30.

[0050] Referring to FIG. 2, one end of the connecting head 20 is detachably coupled to the blade housing 10 on the back surface of the blade housing 10.

[0051] The blade housing 10 is rotatable about a first axis ax1 with respect to one end of the connecting head 20. The first axis ax1 is substantially parallel to the lateral direction d1 which is the alignment direction of the shaving blade 5.

[0052] FIG. 3 is a rear perspective view of the razor assembly 100 according to the first embodiment of the present disclosure.

[0053] Referring to FIG. 3, the connecting head 20 is rotatably coupled to the head adapter 32 about a second axis ax2.

[0054] The second axis ax2 is perpendicular to both the lateral direction d1 and the longitudinal direction d2. Here, the longitudinal direction d2 is defined as a direction perpendicular to both the direction of the second axis ax2 and the lateral direction d1 when the connecting head 20 is in the neutral position.

[0055] Although the longitudinal direction d2 has been illustrated as being parallel to the direction in which the grip portion 33 extends, the present invention is not limited thereto. For example, the grip portion 33 can extend at a certain angle from the head adapter 32 for ease of use, and in this case, the second axis ax2 is perpendicular to the lateral direction d1 but not perpendicular to the direction in which the grip portion 33 extends.

[0056] FIG. 4 is a perspective view showing a form in which the blade housing 10 and the head side connecting portion 21 according to the first embodiment of the present disclosure are coupled.

[0057] Referring to FIG. 4, the connecting head 20 includes the head side connecting portion 21, and the razor cartridge 6 includes the housing side connecting portion 13.

[0058] The head side connecting member 21 is disposed at one end of the connecting head 20 and is rotatable within a predetermined angular range about the first axis ax1.

[0059] The housing side connecting member 13 is disposed on the back surface of the blade housing 10 and includes a coupling space F to which the head side connecting member 21 can be coupled.

[0060] The housing side connecting member 13 can be configured as a member separate from the blade housing 10. In this case, the housing side connecting member 13 and the blade housing 10 are fastened so as not to move relative to each other. However, the present invention is not limited thereto, and the housing side connecting member 13 and the blade housing 10 may be integrally configured.

[0061] The head side connecting member 21 is inserted into the coupling space F of the housing side connecting member 13 and is fastened so as not to move relative to the housing side connecting member 13. Accordingly, when the head side connecting member 21 rotates about the first axis ax1, the razor cartridge 6 is rotatable within a predetermined angular range together with the housing side connecting member 13.

[0062] However, the rotation structure of the razor cartridge 6 about the first axis ax1 is not limited thereto.

[0063] For example, the first axis ax1 can be located on the razor cartridge 6 instead of the connecting head 20. In this case, the housing side connecting member 13 can be rotatably coupled to the blade housing 10 about the first axis ax1, and the head side connecting member 21 is fastened to the connecting head 20 so as not to move relative to each other.

[0064] In this case, the housing-side connecting portion 13 can rotate about the first axis ax1 with respect to the blade housing 10 in a state where the housing-side connecting portion 13 and the head-side connecting portion 21 are coupled. As a result, the razor cartridge 6 can rotate freely about the first axis ax1 with respect to the handle 30.

[0065] The head-side connecting portion 21 is disclosed as being coupled to the housing-side connecting portion 13 by inserting lateral protrusions (not shown) formed on both sides of the head-side connecting portion 21 into lateral insertion openings (not shown) formed on both side walls of the coupling space F. However, the present invention is not limited thereto.

[0066] For example, the coupling between the head-side connecting portion 21 and the housing-side connecting portion 13 may be a method in which a longitudinal protrusion (not shown) protruding in the longitudinal direction d2 from the connecting head 20 is inserted into a longitudinal insertion opening (not shown) formed in the coupling space F for coupling.

[0067] FIG. 5 is an exploded perspective view of a razor assembly 100 according to a first embodiment of the present disclosure.

[0068] Referring to FIG. 5, a fastening member 50 disposed coaxially with the second axis ax2 can penetrate both a through-hole 3241a, 3241b formed in the razor handle 30 and a through-hole 1221a, 1221b formed in the connecting head 20. The connecting head 20 can rotate about the second axis ax2 in a state where the fastening member 50 penetrates the connecting head 20 and the razor handle 30.

[0069] The fastening member 50 generally has the shape of a fixing pin, but is not limited thereto. For example, the fastening member 50 may be a shaft-type member that enables rotation between the connecting head 20 and the razor handle 30.

[0070] The rotation axis of the connecting head 20 is exemplified as being embodied by a separate shaft member such as the fastener 50, but the present invention is not limited thereto. For example, the rotation axis of the connecting head 20 can be configured such that a shaft-shaped member protruding from the head adapter 32 passes through a through hole (not shown) of the connecting head 20, or conversely, a shaft-shaped member protruding from the connecting head 20 passes through a through hole (not shown) of the head adapter 32.

[0071] The razor assembly 100 includes a restoring force provider 4, and the restoring force provider 4 includes a rotatable magnet 40 and a fixed magnet 45.

[0072] The restoring force provider 4 is configured to provide a restoring force that returns the connecting head 20 to the rest position by utilizing an attractive magnetic force acting between the rotatable magnet 40 and the fixed magnet 45 when the connecting head 20 rotates about the second axis ax2 in the rest position.

[0073] In the first embodiment of the present disclosure, it is exemplified that an attractive magnetic force acts between the rotatable magnet 40 and the fixed magnet 45. However, in other embodiments other than the first embodiment of the present disclosure, a repulsive magnetic force may act between the rotatable magnet 40 and the fixed magnet 45.

[0074] The rotatable magnet 40 is accommodated in a pivot space G formed on the other side of the connecting head 20. The rotatable magnet 40 can rotate about the second axis ax2 together with the connecting head 20 as the connecting head 20 rotates about the second axis ax2.

[0075] Although the pivot space G has been illustrated as being formed on the connecting head 20, the present invention is not limited thereto. For example, the pivot space G can be formed in another housing member (not shown), and in this case, the rotating magnet 40 can be attached to the connecting head 20 while being housed in the housing member.

[0076] Also, although the connecting head 20 has been illustrated as being composed of two sections divided in the vertical direction d2 in order to house the rotating magnet 40 in the pivot space G, the present invention is not limited thereto, and it may be configured integrally.

[0077] The fixed magnet 45 is fixedly arranged on the razor handle 30. Specifically, the fixed magnet 45 is arranged on the razor handle 30 such that when the connecting head 20 is in the neutral position, an attractive force acts on the rotating magnet 40 in the vertical direction d2 perpendicular to both the lateral direction d1 and the second axis ax2 direction.

[0078] The fixed magnet 45 is housed and fixed in the storage space H of the razor handle 30. Specifically, the fixed magnet 45 is removably housed in the storage space H of the razor handle 30 while being housed in the magnet housing 49.

[0079] The magnet housing 49 includes a magnet receiving portion 492 and a fitting portion 494 extending from the magnet receiving portion 492.

[0080] The magnet receiving portion 492 is configured to be able to house the fixed magnet 45.

[0081] The magnet housing 49 can be configured such that, when inserted into the storage space H, the fitting portion 494 presses against both side walls of the storage space H, whereby the magnet housing 49 can be fixed within the storage space H. For this purpose, the fitting portion 494 is made of an elastic material such as plastic.

[0082] The fitting portion 494 includes a protruding portion 4922 (see FIG. 7) extending from one end of the fitting portion 494. The protruding portion 4922 is configured to engage with handle side locking steps 35 (see FIG. 7) formed on both side walls of the storage space H when the magnet housing 49 is inserted into the storage space H.

[0083] The grip portion 33 can include a lid member 332.

[0084] The magnet housing 49 can be inserted into the storage space H of the razor handle 30 and can also be removed from the storage space H with the lid member 332 separated from the grip portion 33. This has the effect of facilitating the replacement and maintenance of the fixed magnet 45.

[0085] For example, the user can replace it with another fixed magnet having a different magnetic strength according to their preference, whereby the rotation strength of the connecting head 20 can be adjusted.

[0086] The method of adjusting the rotation strength of the connecting head 20 may be a method of using fixed magnets 45 made of different materials, a method of changing the size or shape of the fixed magnet 45, or a method of adjusting the separation distance between the rotating magnet 40 and the fixed magnet 45.

[0087] To adjust the separation distance between the rotating magnet 40 and the fixed magnet 45, the rotating magnet 40 or the fixed magnet 45 can be configured to be movable in the vertical direction d2 within the razor assembly 100.

[0088] For example, the fitting portion 494 of the magnet housing 49 may be selectively fitted to a plurality of handle-side locking jaws (35) configured in multiple stages along the vertical direction d2, or the magnet housing 49 may be slidable along a rail member (not shown) formed in the vertical direction d2 within the storage space H. However, the present invention is not limited thereto.

[0089] The materials forming the rotating magnet 40 and the fixed magnet 45 include all substances that allow the magnetic attraction between the rotating magnet 40 and the fixed magnet 45 to act.

[0090] Therefore, the rotating magnet 40 and the fixed magnet 45 may both be permanent magnets, but are not limited thereto. For example, in the case of an embodiment that utilizes attraction as in the first embodiment of the present disclosure, either one of the rotating magnet 40 and the fixed magnet 45 may be a permanent magnet, and the other one may be a ferromagnetic metal.

[0091] Here, the ferromagnetic metal means a substance on which an attractive force acts due to a permanent magnet. As the ferromagnetic metal, it is desirable to use ferromagnetic metals such as iron, cobalt, and nickel, but it is not limited thereto. Therefore, any substance other than the aforementioned metals may be used as the ferromagnetic metal as long as an attractive force acts on it due to a permanent magnet.

[0092] Also, the permanent magnets used for the rotating magnet 40 and the fixed magnet 45 may be replaced with electromagnets that function as magnets only when an electric current flows. In this case, the connecting head 20 or the handle 30 incorporates a battery (not shown) capable of supplying an electric current to the electromagnet.

[0093] The rotating magnet 40 and the fixed magnet 45 have been exemplified as having a cylindrical shape, but are not limited thereto. For example, the rotating magnet 40 or the fixed magnet 45 may have a spherical shape or other shapes.

[0094] When the rotation structure using magnetic force according to the first embodiment of the present disclosure is compared with the rotation structures employed by conventional multi-axis rotary razors, for example, the rotation structure using a cantilever, it has the advantage of providing a simpler and more reliable structure.

[0095] For example, in the conventional cantilever method, in order to impart a restoring force to the cantilever, the cantilever is constituted by an elastic member such as a leaf spring. Such an elastic member may cause problems such as deformation and wear when used for a long period of time, and thus it is a problem that the restoring force of the cantilever fluctuates. On the other hand, the rotation structure using magnetic force according to the first embodiment of the present disclosure has the advantage of permanently providing a constant restoring force even during long-term use.

[0096] In addition, the rotation structure using magnetic force according to the first embodiment of the present disclosure uses the magnetic force acting between permanent magnets (or between a magnet and a ferromagnetic metal) as the restoring force instead of the elastic force of an elastic member, and thus has the advantage of providing a smoother pivoting feeling compared to the conventional cantilever method.

[0097] In addition, in the conventional cantilever method, since the restoring force is determined by the elastic member constituting the cantilever, it has the disadvantage that it is difficult to adjust the magnitude of the restoring force according to the user's preference. On the other hand, the rotation structure using magnetic force according to the first embodiment of the present disclosure has the advantage that the magnitude of the restoring force can be easily adjusted according to the user's preference by changing the size, shape, or material of the magnet, or by adjusting the separation distance between the magnets.

[0098] FIG. 6 is a perspective view of a razor assembly 100 according to a first embodiment of the present disclosure, with a part of the razor handle 30 removed in the vertical direction.

[0099] Referring to FIG. 6, in the neutral position, one rotating magnet 40 is arranged to face one fixed magnet 45 in the vertical direction d2.

[0100] In the first embodiment of the present disclosure, the rotating magnet 40 and the fixed magnet 45 can be arranged so that an attractive force acts between them. Since an attractive force acts between the rotating magnet 40 and the fixed magnet 45, a structure can be realized in which one rotating magnet 40 and one fixed magnet 45 rotate in the rotational directions on both sides from the restoring position where they face each other.

[0101] Although it has been exemplified that the rotating magnet 40 and the fixed magnet 45 are each one, the present invention is not limited thereto. For example, there may be two or more rotating magnets 40 or fixed magnets 45.

[0102] When there are a plurality of rotating magnets 40 or fixed magnets 45, it is desirable that the attractive force between the rotating magnet 40 and the fixed magnet 45 is symmetric with respect to the neutral position of the connecting head 20. Therefore, a plurality of rotating magnets 40 or a plurality of fixed magnets 45 can be arranged to be symmetric with respect to the neutral position of the connecting head 20.

[0103] In this case, a plurality of rotating magnets 40 or a plurality of fixed magnets 45 can form a single group as a whole and function as if they were a single magnet.

[0104] FIG. 7 is a cross-sectional view showing the shape of the razor assembly 100 when the connecting head according to the first embodiment of the present disclosure is in the neutral position.

[0105] Referring to FIG. 7, in the neutral position, the second axis ax2, the rotating magnet 40, and the fixed magnet 45 are arranged in the order of the second axis ax2, the rotating magnet 40, and the fixed magnet 45, closer to the blade housing 10 at the neutral position of the connecting head 20. Further, the rotating magnet 40 and the fixed magnet 45 are arranged to face each other in the vertical direction d2.

[0106] Therefore, when assuming that the distance between the rotating shaft ax2 and the fixed magnet 45 is fixed, the distance between the rotating shaft ax2 and the rotating magnet 40 according to the first embodiment of the present disclosure is relatively short.

[0107] For example, compared with the case where the rotating magnet 40 is arranged not in front of the fixed magnet 45 but above, below, or behind the fixed magnet 45, the distance between the rotating shaft ax2 and the rotating magnet 40 becomes relatively short.

[0108] Here, the front side of the fixed magnet 45 means the direction in which the fixed magnet 45 faces the second axis ax2, and the upper side of the fixed magnet 45 means the direction in which the back surface of the blade housing 10 can be seen.

[0109] Thus, when assuming that the rotating magnet 40 moves within the same range in the lateral direction d1, the rotation angle of the connecting head 20 becomes relatively large compared with the case where the rotating magnet 40 is not arranged in front of the fixed magnet 45.

[0110] Thereby, the arrangement of the magnets 40 and 45 according to the first embodiment of the present disclosure has an advantage of increasing the space efficiency of the product by requiring less space to obtain the same rotation range.

[0111] In the neutral position, rotational resistance due to the gravitational force between the rotating magnet 40 and the fixed magnet 45 occurs in the connecting head 20. Therefore, when a force smaller than the rotational resistance acts on the connecting head 20, the rotation of the connecting head 20 is restricted.

[0112] The magnitude of the rotational resistance is designed to have a value suitable for actual use by adjusting the magnitudes, shapes of the rotating magnet 40 and the fixed magnet 45, and the separation distance between the rotating magnet 40 and the fixed magnet 45, etc.

[0113] The rotational resistance is desirably between 0.015 kgf and 0.2 kgf for ease of use, but the present invention is not limited thereto.

[0114] One surface on the other side of the connecting head 20 facing the fixed magnet 45 has a curved profile P. At this time, the center of the radius of curvature of the curved profile P is desirably located on the second axis ax2.

[0115] Since one surface on the other side of the connecting head 20 has the curved profile P, when the connecting head 20 rotates about the second axis ax2, the problem that the other side of the connecting head 20 comes into contact with the fixed magnet 45 or the magnet housing 49 can be prevented. Thereby, there is an effect that the rotation of the connecting head 20 becomes smooth.

[0116] Although one surface on the other side of the connecting head 20 having a curved profile has been exemplified, the present invention is not limited thereto. For example, a curved profile may be formed on one surface of the magnet housing 49 facing the rotating magnet 40, or curved profiles may be formed on both one surface of the connecting head 20 and one surface of the magnet housing 49 facing each other.

[0117] FIG. 8 is a plan view showing the shape of the razor assembly 100 when the connecting head according to the first embodiment of the present disclosure is in the rotational position.

[0118] Referring to FIG. 8, when the connecting head 20 rotates about the second axis ax2, the rotating magnet 40 rotates clockwise or counterclockwise about the second axis ax2 together with the connecting head 20.

[0119] When the rotating magnet 40 rotates about the second axis ax2, a restoring force due to gravitational attraction continuously acts between the rotating magnet 40 and the fixed magnet 45.

[0120] When the force trying to rotate the connecting head 20 is greater than the restoring force due to the gravitational attraction between the rotating magnet 40 and the fixed magnet 45, the connecting head 20 will continuously rotate within the rotation range.

[0121] Conversely, when the force trying to rotate the connecting head 20 is less than the restoring force due to the gravitational attraction between the rotating magnet 40 and the fixed magnet 45, the connecting head 20 will return from the rotated position to the neutral position.

[0122] The rotation range of the connecting head 20 can be restricted to a specific angular range by a stopper (not shown). Specifically, when the connecting head 20 rotates, the other side of the connecting head 20 contacts the first rotation restricting portion 326 of the head adapter 32, thereby restricting the rotation of the connecting head 20 to a specific angular range.

[0123] A second rotation restricting portion 13 (see FIG. 1) is formed on one surface of the connecting head 20 that does not fit within the head adapter 32. When the connecting head 20 rotates about the second axis ax2, the second rotation restricting portion 13 can contact the restricting stepped portion 322 (see FIG. 1) formed on the head adapter 32, thereby preventing the rotation of the connecting head 20.

[0124] The limiting step portion 322 can include a curved surface, and the second rotation limiting portion 13 includes a curved surface corresponding to the shape of the limiting step portion 322 for smooth contact with the limiting step portion 322. However, the present invention is not limited thereto.

[0125] The second rotation limiting portion 13 serves to further limit the rotation of the connecting head 20 when the connecting head 20 rotates beyond the rotation range by the first rotation limiting portion 326. Therefore, the rotation limiting range by the second rotation limiting portion 13 is larger than the rotation limiting range by the first rotation limiting portion 326.

[0126] However, the stopper structure of the connecting head 20 is not limited thereto. For example, the clipper assembly 100 may include only either the first rotation limiting portion 326 or the second rotation limiting portion 13, and may be configured such that the rotation limiting range by the first rotation limiting portion 326 is larger than the rotation limiting range by the second rotation limiting portion 13.

[0127] The second embodiment of the present disclosure illustrated in FIGS. 9 to 12 described below is different from the first embodiment of the present disclosure illustrated in FIGS. 1 to 8 in that the rotating magnet is a magnetic metal and has a sphere shape. Hereinafter, the description will focus on the differential features of the second embodiment of the present disclosure, and the overlapping description of the substantially same configuration as that of the first embodiment of the present disclosure will be omitted.

[0128] FIG. 9 is a cross-sectional view showing the shape of the clipper assembly 200 when the connecting head 120 according to the second embodiment of the present disclosure is in the neutral position.

[0129] Referring to FIG. 9, in the second embodiment of the present disclosure, the rotating magnet 40 is made of a magnetic metal, and the fixed magnet 45 is made of a permanent magnet.

[0130] As the magnetic metal constituting the rotating magnet 40, it is desirable to use ferromagnetic metals such as iron, cobalt, and nickel, but the present invention is not limited thereto. Therefore, as long as the magnetic metal is a substance on which an attractive force acts by a permanent magnet, substances other than the aforementioned metals can be used as the rotating magnet 40.

[0131] The rotating magnet 40 has a spherical shape, and the fixed magnet 45 has a cylindrical shape.

[0132] A permanent magnet has an N pole and an S pole, and manufacturing a permanent magnet in a spherical shape is disadvantageous in terms of the manufacturing process. For example, when a spherical permanent magnet is divided into two hemispherical regions, it is virtually a difficult problem to manufacture the permanent magnet such that each hemispherical region has exactly an N pole and an S pole.

[0133] Also, when manufacturing a permanent magnet in a spherical shape, an additional process is required to arrange it such that a specific pole faces a specific direction, which is disadvantageous in terms of the manufacturing process.

[0134] Although the case of previously manufacturing a permanent magnet in a spherical shape was given as an example, the above-mentioned problems of the permanent magnet also apply when manufacturing the permanent magnet in a non-general shape of the permanent magnet, such as a hemisphere, a circular cone, or a poly pyramid.

[0135] On the other hand, unlike a permanent magnet, a magnetic metal does not have a specific pole. Therefore, manufacturing a magnetic metal into a spherical or other shape is easier than in the case of a permanent magnet.

[0136] Also, when arranging a magnetic metal having a spherical or other shape on a product, there is an advantage in terms of the manufacturing process because the process of arranging it such that a specific pole faces a specific direction is unnecessary.

[0137] When using a ferromagnetic metal, as described above, the step of arranging a specific pole to face a specific direction can be omitted, and it is easy to manufacture in a shape other than a cylindrical shape.

[0138] In addition, since the ferromagnetic metal is less expensive than a permanent magnet, there is also an advantage in terms of cost compared to the case where both the rotating magnet 40 and the fixed magnet 45 are composed of permanent magnets.

[0139] Although the ferromagnetic metal may have a relatively small restoring force compared to a permanent magnet having the same size and the same volume, as described above, it has the advantage that the application of its shape can be free.

[0140] In the second embodiment of the present disclosure, based on such considerations, the rotating magnet 40 is configured of a spherical ferromagnetic metal. Thereby, the second embodiment of the present disclosure encompasses the advantages of the ferromagnetic metal described above, while also complementing the problem of the relatively small magnitude of the restoring force of the ferromagnetic metal.

[0141] FIG. 10 shows the lines of magnetic force acting between the rotating magnet and the fixed magnet according to the second embodiment of the present disclosure.

[0142] Specifically, FIG. 10(a) shows the lines of magnetic force acting between the rotating magnet 1040 having a cylindrical shape and the fixed magnet 1045, and FIG. 10(b) shows the lines of magnetic force acting between the rotating magnet 40 having a spherical shape and the fixed magnet 45 having a cylindrical shape.

[0143] The rotating magnets 1040 and 40 illustrated in FIG. 10 are all made of ferromagnetic metal, and the fixed magnets 1045 and 45 are all made of permanent magnets. Therefore, all the lines of magnetic force between the rotating magnets 1040 and 40 and the fixed magnets 1045 and 45 are lines of magnetic force showing attractive force.

[0144] Also, for the sake of convenience of explanation, in FIG. 10, one end of the fixed magnets 1045 and 45 facing the rotating magnets 1040 and 40 is illustrated as the N pole, and one end of the rotating magnets 1040 and 40 facing one end of the fixed magnets 1045 and 45 is shown as having the S pole polarity induced by the magnetism of the fixed magnets 1045 and 45. However, the present invention is not limited thereto, and one end of the rotating magnets 1040 and 40 and one end of the fixed magnets 1045 and 45 may have the N pole and the S pole, respectively.

[0145] Also, in FIG. 10, for the sake of convenience of explanation, only the magnetic lines of force acting on the surfaces where the rotating magnets 1040 and 40 and the fixed magnets 1045 and 45 face each other are shown. Therefore, even if not shown in FIG. 10, it should be understood that magnetic force acts between the other surfaces of the rotating magnets 1040 and 40 and the fixed magnets 1045 and 45 that do not face each other.

[0146] Referring to FIG. 10(a), the rotating magnet 1040 and the fixed magnet 1045 are arranged symmetrically with respect to the center line S at the neutral position.

[0147] As a result, the magnetic lines of force acting between the rotating magnet 1040 and the fixed magnet 1045 are also arranged symmetrically with respect to the center line S.

[0148] The cylindrical rotating magnet 1040 and the cylindrical fixed magnet 1045 have parallel opposing surfaces at the neutral position. Therefore, the separation distance between the rotating magnet 1040 and the fixed magnet 1045 is constant regardless of the distance from the center line S.

[0149] Since the magnitude of the magnetic force acting between two points is inversely proportional to the square of the distance between the two points, the magnitude of the magnetic force acting between the opposing surfaces of the rotating magnet 1040 and the fixed magnet 1045 is approximately the same in the region near the center line S and in the region away from the center line S.

[0150] That is, the magnetic force acting between the rotating magnet 1040 and the fixed magnet 1045 is evenly distributed between the opposing surfaces of the rotating magnet 1040 and the fixed magnet 1045.

[0151] In this case, when the connecting head (not shown) rotates within a very small angular range from the neutral position, it becomes difficult to return or align the connecting head to the exact neutral position.

[0152] Referring to FIG. 10(b), the rotating magnet 40 and the fixed magnet 45 are symmetrically arranged with respect to the center line S at the neutral position.

[0153] Thereby, the magnetic force lines acting between the rotating magnet 40 and the fixed magnet 45 can also be symmetrically arranged with respect to the center line S.

[0154] For the spherical rotating magnet 40 and the cylindrical fixed magnet 45, the separation distance between the rotating magnet 40 and the fixed magnet 45 increases as they move away from the center line S at the neutral position, and the separation distance is minimized on the center line S.

[0155] Since the magnitude of the magnetic force acting between two points is inversely proportional to the square of the distance between the two points, the magnitude of the magnetic force acting between the opposing surfaces of the rotating magnet 40 and the fixed magnet 45 is the largest in the region near the center line S and gradually decreases as it moves away from the center line S. That is, the magnetic force acting between the rotating magnet 40 and the fixed magnet 45 is concentrated and distributed near the center line S.

[0156] Thereby, when the connecting head (not shown) rotates within a small angular range from the neutral position, due to the attractive force near the center line S that acts most strongly, the connecting head can be accurately returned or aligned to the neutral position.

[0157] The rotating magnet 40 has been illustrated as having a spherical shape, but the present invention is not limited thereto. As long as the shape is such that the magnitude of the magnetic force in the region near the center line S at the neutral position is relatively greater than the magnitude of the magnetic force in the region away from the center line S, the rotating magnet 40 may have such a shape.

[0158] For example, only the portion of the rotating magnet 40 facing the fixed magnet 45 may partially have the shape of a hemisphere, a circular cone, or a poly pyramid.

[0159] FIG. 11 is a cross-sectional perspective view of the pivot space G of the connecting head 120 according to the second embodiment of the present disclosure and the rotating magnet 40 accommodated in the pivot space G.

[0160] Referring to FIG. 11, the spherical rotating magnet 40 is accommodated in the pivot space G formed on the other side of the connecting head 120.

[0161] The connecting head 120 includes a head side opening 1222 formed on the other side surface of the connecting head 120 facing the fixed magnet 45.

[0162] A part of the rotating magnet 40 accommodated in the pivot space G of the connecting head 120 is exposed to the outside of the connecting head 120 through the head side opening 1222.

[0163] On the other side surface of the connecting head 120 facing the fixed magnet 45, the remaining portion excluding the head side opening 1222 functions as a head side locking step 122.

[0164] The other part of the rotating magnet 40 that is not exposed to the outside through the head-side opening 1222 is configured to be locked to the head-side locking jaw 122. Thereby, the gravitational force acting on the rotating magnet 40 prevents the rotating magnet 40 from passing through the head-side opening 1222 and detaching from the connecting head 120.

[0165] Since a part of the rotating magnet 40 is exposed through the head-side opening 1222, the rotating magnet 40 can approach in the longitudinal direction d2 of the fixed magnet 45. Thereby, the gravitational force acting between the rotating magnet 40 and the fixed magnet 45 increases.

[0166] Also, since a part of the rotating magnet 40 is exposed to the outside through the head-side opening 1222, it is possible to prevent the space between the rotating magnet 40 and the fixed magnet 45 from being shielded by the other side surface of the connecting head 120. Thereby, the decrease in the gravitational force between the magnets 40 and 45 due to the shielding can be minimized.

[0167] As a result, the razor assembly 200 according to the second embodiment of the present disclosure includes the head-side opening 1222, so that under the same conditions such as the size, shape of the magnets 40 and 45, or the separation distance between the pivot space G and the magnet housing 49, there is an effect that the gravitational force between the rotating magnet 40 and the fixed magnet 45 can be maximized.

[0168] The rotating magnet 40 has a spherical shape, and the head-side opening 1222 has been exemplified as having a circular shape, but the present invention is not limited thereto.

[0169] For example, the rotating magnet 40 may have a hemispherical, conical, polygonal pyramid shape, or other shape, and the head-side opening 1222 may have a triangular, quadrangular, cross shape, or other shape according to the shape of the rotating magnet 40.

[0170] Also, although the head-side opening 1222 has been illustrated as being formed on the connecting head 120, the present invention is not limited to this. For example, when the rotating magnet 40 is coupled to the connecting head 120 in a state of being housed in a separate housing member (not shown), the head-side opening 1222 may be formed on one surface of the housing member facing the fixed magnet 45.

[0171] FIG. 12 is a perspective view of the magnet housing 49 according to the second embodiment of the present disclosure, and the fixed magnet 45 housed in the magnet housing 49.

[0172] Referring to FIG. 12, the fixed magnet 45 having a cylindrical shape is housed in the magnet housing 49. Specifically, the fixed magnet 45 is housed in the magnet storage portion 494 of the magnet housing 49.

[0173] The magnet housing 49 includes a housing-side opening 498 formed on one side surface of the magnet housing 49 facing the rotating magnet 40.

[0174] A part of the fixed magnet 45 housed in the magnet storage portion 494 is exposed to the outside of the magnet housing 49 through the housing-side opening 498.

[0175] The remaining portion of the one side surface of the magnet housing 49 facing the rotating magnet 40, excluding the housing-side opening 498, functions as a housing-side locking step 496.

[0176] The other portion of the fixed magnet 45 that is not exposed to the outside through the housing-side opening 498 is configured to be locked to the housing-side locking step (496). Thereby, the gravitational force acting on the fixed magnet 45 prevents the fixed magnet 45 from passing through the housing-side opening 498 and detaching from the magnet housing 49.

[0177] By having a part of the fixed magnet 45 exposed to the outside through the housing-side opening 498, it is possible to prevent the space between the rotating magnet 40 and the fixed magnet 45 from being shielded by one side surface of the magnet housing 49. Thereby, a decrease in the attractive force between the magnets 40 and 45 due to shielding can be minimized.

[0178] Thereby, the razor assembly 200 according to the second embodiment of the present disclosure includes the housing-side opening 498, so that under the same conditions such as the size, shape of the magnets 40 and 45, or the separation distance between the pivot space G and the magnet housing 49, there is an effect that the attractive force between the rotating magnet 40 and the fixed magnet 45 can be maximized.

[0179] The housing-side opening 498 has been exemplified as having a cross shape, but the present invention is not limited thereto. For example, the housing-side opening 1222 may have a circular shape, a polygonal shape such as a triangle or a quadrilateral, or other shapes.

[0180] FIG. 13a is a plan view of the razor assembly 300 according to the third embodiment of the present disclosure as seen from the front of the razor handle 230 (the side where the front of the blade housing 10 can be seen), FIG. 13b is a rear view as seen from the back, and FIG. 13c is a perspective view as seen from one side of the back.

[0181] The razor assembly 300 according to the third embodiment of the present disclosure includes a razor cartridge including a shaving blade 5 and a blade housing 10, a connecting head 220, and a razor handle 230. One end of the shaving blade 5 has a cutting edge, and the other end is attached to an attachment portion provided in the blade housing 10. At this time, the direction in which the shaving blade 5 fits into the blade housing 10 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, redundant description is omitted.

[0182] In FIG. 13a, the connecting head 220 is detachably coupled to the back surface 12 of the blade housing 10. At this time, the blade housing 10 pivots about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 fits with respect to the end of the connecting head.

[0183] On the other hand, the connecting head 220 is also coupled to the razor handle 230 at the opposite end so as to be rotatable about a rotation axis ax2 perpendicular to the lateral direction d1. The rotation axis, that is, the second axis ax2 is formed in a direction perpendicular to both the lateral direction d1 and the longitudinal direction d2. Such a coupling is made by a fastener 50 that penetrates both the connecting head 220 and the razor handle 230 at the position of the second axis ax2. The fastener 50 can be embodied as a fixing pin, but is not limited thereto and includes a shaft-type member that enables rotation between the connecting head 220 and the razor handle 230.

[0184] FIG. 14 is an exploded perspective view of the razor assembly 300 of FIG. 13a. Here, the blade housing 10 and the connecting head 220 are shown in a state of being coupled to each other.

[0185] The connecting head 220 is rotatably coupled to the razor handle 230 by a fastener 50. The razor handle 230 may be integrally formed as shown in FIG. 14, or may be composed of two storage members divided in the longitudinal direction. The razor handle 230 provides a storage space 231 for receiving the pivoting member 224 of the connecting head 220. Specifically, the pivoting member 224 is coupled to the inside of a stepped portion 236 formed in the storage space 231. Thereafter, the fastener 50 penetrates and fastens both the through holes 234a, 234b of the razor handle 230 and the through hole 222 formed in the connecting head 220 (see FIG. 15) at the position of the second axis ax2.

[0186] FIG. 15 is a plan view showing the shape of the razor assembly 300 when the connecting head 220 is in the rotational position. Here, the razor handle 230 is illustrated in a longitudinal cross-sectional view cut in the longitudinal direction in order to observe the inside of the razor handle 230. As described above, in the connecting head 220, a pivot member 224 is formed at an end opposite to the blade housing 10. The pivot member 224 includes a receiving recess 225 for accommodating the rotating magnet 40, and the razor handle 230 includes a receiving groove 235 for accommodating the fixed magnet 45 on the inner surface where the receiving space 231 is formed. Therefore, in the neutral position, the rotating magnet and the fixed magnets 40 and 45 are respectively received in the receiving grooves 225 and 235, and are spaced apart so as to face each other in a direction parallel to the second axis ax2. That is, the direction in which the rotating magnet and the fixed magnets 40 and 45 are arranged opposite to each other is parallel to the second axis. Here, the fact that the magnets 40 and 45 face each other means that the broad surfaces of the magnets 40 and 45 are arranged side by side so as to face each other. At this time, the position of the second axis ax2 to which the fastener 50 is fastened is located closer to the blade housing 10 than the position of the pivot member 224 or the rotating magnet 40.

[0187] When the connecting head 220 rotates, the rotating magnet 40 rotates clockwise or counterclockwise with respect to the second axis ax2 from the opposing neutral position, and the distance from the fixed fixed magnet 45 increases. At this time, since the rotating magnet 40 and the fixed magnet 45 have different polarities, an attractive force acts between the fixed magnet 45 and the rotating magnet 40. As a result, the pivot member 224 provided with the rotating magnet 40 and the connecting head 220 return to the neutral position.

[0188] When the pivot member 224 rotates within the storage space 231 in this way, its rotation range is restricted within a specific angle by the stopper. This is to limit the rotation range with respect to the second axis ax2 during shaving within a range that does not induce discomfort to the user. In this embodiment, when the pivot member 224 rotates, the pivot member 224 with a step formed contacts the step portion 236, thereby providing such a stopper function. However, it is not limited to this, and the pivot member 224 may be restricted by the both side walls of the storage space 231 of the razor handle 230.

[0189] FIG. 16a is a plan view of the razor assembly 400 according to the fourth embodiment of the present disclosure as viewed from the front of the razor handle 330, FIG. 16b is a rear view as viewed from the back, and FIG. 16c is a perspective view as viewed from one side of the back.

[0190] The razor assembly 400 according to the fourth embodiment of the present disclosure includes a blade housing 10, a connecting head 320, and a razor handle 330. At this time, the direction in which the shaving blade 5 fits into the blade housing 110 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, redundant explanations are omitted.

[0191] In FIG. 16a, the connecting head 320 is detachably coupled to the blade housing 10 from the back of the blade housing 10. At this time, the blade housing 10 pivots with respect to the end of the connecting head about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 fits.

[0192] On the one hand, the connecting head 320 is rotatably coupled to the razor handle 330 also at the opposite end with reference to a rotation axis ax2 perpendicular to the lateral direction d1. The rotation axis, that is, the second axis ax2 is formed in a direction perpendicular to both the lateral direction d1 and the longitudinal direction d2. Such coupling is made by a fastener 50 that penetrates both the connecting head 320 and the razor handle 330 at the position of the second axis ax2. The fastener 50 can be embodied as a fixing pin, but is not limited thereto and includes a shaft-type member that enables rotation between the connecting head 320 and the razor handle 330.

[0193] Figures 17a to 17c are exploded perspective views of the razor assembly 400 of FIG. 16a as viewed from different directions. Here, the blade housing 10 and the connecting head 320 are shown in a state of being coupled to each other.

[0194] On the opposite side of the blade housing 10, the connecting head 320 is rotatably coupled to the razor handle 330 by a fastener 50. The razor handle 330 may be integrally formed, but in this embodiment, the razor handle 330 will be described as being composed of two receiving members 330a and 330b that are divided in the longitudinal direction.

[0195] The first and second receiving members 330a and 330b that constitute the razor handle 330 provide receiving spaces 338a and 338b for accommodating the pivot member 324 of the connecting head 320.

[0196] Specifically, the pivot member 324 can be coupled inside a step shoulder 336 formed in the receiving spaces 338a and 338b. Thereafter, the fastener 50 penetrates and fastens both the through holes 334a and 334b of the razor handle 330 and the through hole 322 formed in the connecting head 320 at the position of the second axis ax2.

[0197] FIG. 18 is a perspective view in which a part of the second storage member 330b is removed vertically from the razor assembly 400. Here, the pivot member 324 is coupled to the inside of the stepped portion 336 formed in the storage spaces 338a and 338b. The pivot member 324 includes a storage groove 325 for accommodating the rotation magnet 40, and the razor handle 330 includes a storage groove 335 for accommodating the fixed magnet 45 on the inner surface of the stepped portion 336. Therefore, in the neutral position, the rotation magnet and the fixed magnets 40 and 45 are received in their respective storage grooves 325 and 335 and are spaced apart so as to face each other in a direction parallel to the vertical direction d2.

[0198] That is, the direction in which the rotation magnet and the fixed magnets 40 and 45 are arranged to face each other is parallel to the vertical direction. At this time, the position of the second axis ax2 to which the fastener 50 is fastened, the position of the fixed magnet 45, and the position of the rotation magnet 40 are arranged closer to the blade housing 10 in order.

[0199] FIG. 19a is a plan view showing the shape of the razor assembly 400 of FIG. 18 when the connecting head 320 is in the neutral position, and FIG. 19b is a plan view showing the shape of the razor assembly 400 of FIG. 18 when the connecting head 320 is in the rotation position.

[0200] Referring to FIG. 19a, in the neutral position, the rotation magnet 40 and the fixed magnet 45 are arranged to face each other in the vertical direction d2. Here, since the rotation magnet and the fixed magnets 40 and 45 have the same polarity, a repulsive force acts between them.

[0201] Referring to FIG. 19b, when the connecting head 320 rotates, the rotation magnet 40 rotates clockwise or counterclockwise with respect to the second axis ax2 from the opposing neutral position.

[0202] At this time, a part of the rotating magnet 40 is close to the fixed magnet 45, while another part of the rotating magnet 40 is away from the fixed magnet 45. However, since the magnitude of the magnetic force is inversely proportional to the square of the distance between the magnets, the repulsive force between the magnets 40 and 45 at such a rotating position increases compared to the repulsive force between the magnets 40 and 45 at the neutral position. Therefore, the pivot member 324 and the connecting head 320 provided with the rotating magnet 40 tend to return to the neutral position.

[0203] When the pivot member 324 rotates within the storage spaces 338a and 338b in this way, its rotation range is limited within a specific angle by the stopper. This is to limit the rotation range with respect to the second axis ax2 during shaving within a range that does not induce discomfort to the user. In this embodiment, when the pivot member 324 rotates, the pivot member 324 contacts both side walls forming the storage spaces 338a and 338b, thereby providing a stopper function. However, it is not limited to this, and the pivot member 324 may be brought into contact with the stepped portion 336 of the razor handle 330.

[0204] FIG. 20 is a perspective view of a razor assembly 500 according to a fifth embodiment of the present disclosure as viewed from one side of the back. The razor assembly 500 according to the fifth embodiment of the present disclosure includes a blade housing 10, a connecting head 420, and a razor handle 430.

[0205] At this time, the direction in which the shaving blade 5 fits into the blade housing 110 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, redundant explanations are omitted.

[0206] In FIG. 20, the connecting head 420 is detachably coupled to the blade housing 10 on the back surface of the blade housing 10. At this time, the blade housing 10 pivots with respect to the end of the connecting head about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 is accommodated.

[0207] On one side, the connecting head 420 is also coupled to the razor handle 430 at the opposite end so as to be rotatable about a rotation axis ax2 perpendicular to the lateral direction d1. The second axis ax2 is formed in a direction perpendicular to both the lateral direction d1 and the longitudinal direction d2. Such coupling is made by a fastener 50 that penetrates both the connecting head 420 and the razor handle 430 at the position of the second axis ax2. The fastener 50 can be embodied as a fixing pin, but is not limited thereto and includes a shaft-type member that enables rotation between the connecting head 420 and the razor handle 430.

[0208] Figures 21a and 21b are exploded perspective views of the razor assembly 500 of FIG. 20 as viewed from different directions. Here, the blade housing 10 and the connecting head 420 are shown in a mutually coupled state.

[0209] On the opposite side of the blade housing 10, the connecting head 420 is rotatably coupled to the razor handle 430 by a fastener 50. The razor handle 430 may be integrally formed, but in this embodiment, the razor handle 430 will be described as being composed of two storage members 430a and 430b that are divided in the longitudinal direction.

[0210] The first and second storage members 430a and 430b that constitute the razor handle 430 provide storage spaces 438a and 438b for receiving the pivot member 424 of the connecting head 420.

[0211] Specifically, the pivot member 424 is coupled to the inside of a step shoulder 436 formed in the storage spaces 438a and 438b. Thereafter, the fastener 50 is fastened through both the through holes 434a and 434b of the razor handle 430 and the through hole 422 formed in the connecting head 420 at the position of the second axis ax2.

[0212] Figures 22a to 22c are plan views and perspective views of the razor assembly 500 with the first and second storage members 430a and 430b cut laterally.

[0213] Here, the pivot member 424 is coupled to the inside of the stepped flange portion 336 formed in the storage spaces 438a and 438b. The pivot member 424 includes a storage groove 425 for accommodating the rotation magnet 40, and storage grooves 435 and 437 for accommodating the first fixed magnet 45 and the second fixed magnet 47 are provided on both side surfaces in the storage spaces 438a and 438b of the razor handle 430.

[0214] In the neutral position, the rotation magnet and the fixed magnets 40, 45, and 47 are received in their respective storage grooves 425, 435, and 437, and are spaced apart from each other so as to face each other in a direction parallel to the lateral direction d1 in which the shaving blade is disposed. That is, the direction in which the magnets 40, 45, and 47 are disposed opposite to each other is parallel to the lateral direction d1. At this time, the position where the magnets 40, 45, and 47 face each other is farther from the blade housing 10 than the position of the second axis ax2 to which the fastener 50 is fastened.

[0215] FIG. 23a is a plan view showing the shape of the razor assembly 500 when the connecting head 420 is in the neutral position, and FIG. 23b is a plan view showing the shape of the razor assembly 500 when the connecting head 420 is in the rotation position. Here, the second storage member 430b is removed so that the inside of the storage space 438a can be seen.

[0216] Referring to FIG. 23a, in the neutral position, the rotating magnet 40 is disposed opposite to the transverse direction d1 in which the shaving blade 5 is disposed, between the first fixed magnet 45 and the second fixed magnet 47. Here, repulsive forces act between the rotating magnet 40 and the first fixed magnet 45, and between the rotating magnet 40 and the second fixed magnet 47. As an example for providing all repulsive forces between the magnets in such proximity, an arrangement as shown in FIG. 24 can be utilized. In the example of FIG. 24, the fixed magnets 45, 47 have N - poles and S - poles formed in the same direction, and the rotating magnet 40 has N - poles and S - poles formed in the opposite direction. Therefore, a repulsive force due to the repulsion between S - poles is brought about between the rotating magnet 40 and the first fixed magnet 45, and a repulsive force due to the repulsion between N - poles is brought about between the rotating magnet 40 and the second fixed magnet 47.

[0217] Referring again to FIG. 23b, when the connecting head 420 rotates, the rotating magnet 40 rotates clockwise or counter - clockwise with respect to the second axis ax2 from the neutral position. When the rotating magnet 40 rotates counter - clockwise, the rotating magnet 40 approaches the second fixed magnet 47 and the repulsive force between them increases. Due to such a repulsive force, when the external force is removed, the pivot member 424 and the connecting head 420 provided with the rotating magnet 40 return to the neutral position while rotating clockwise. Similarly, when the rotating magnet 40 rotates clockwise, the rotating magnet 40 approaches the first fixed magnet 45 and the repulsive force between them increases. Due to such a repulsive force, when the external force is removed, the pivot member 424 and the connecting head 420 provided with the rotating magnet 40 return to the neutral position while rotating counter - clockwise.

[0218] In this embodiment, as the rotation angle of the rotating magnet 40 increases, the repulsive force between the rotating magnet 40 and the other magnets 45, 47 increases. This provides the structural stability of the rotational movement with respect to the second axis ax2 in terms of the fact that the force to return to the neutral position increases as the rotational movement of the connecting head 420 increases. That is, a mechanism similar to providing a restoring force by a normal spring structure is obtained.

[0219] On the other hand, when the pivot member 424 rotates within the storage spaces 438a, 438b, its rotation range is limited within a specific angle. This is for limiting the rotation range with respect to the second axis ax2 during shaving within a range that does not induce discomfort to the user. In this embodiment, when the pivot member 424 rotates, the pivot member 424 contacts the two fixed magnets 45, 47 and functions as a stopper. However, it is not limited to this, and the pivot member 424 may be brought into contact with the stepped portion 436 of the razor handle 430.

[0220] In the third to fifth embodiments of the present disclosure described above, a razor assembly 100, 200, 300, 400, 500 in which the connecting head is rotatable about a second axis ax2 perpendicular to both the direction d1 in which the blades are aligned and the longitudinal direction d2 by utilizing the attractive or repulsive force between a plurality of magnets has been described. Hereinafter, an embodiment of a razor assembly in which the connecting head is rotatable about a third axis ax3 which is a direction parallel to the longitudinal direction d2 by utilizing the attractive or repulsive force between a plurality of magnets will be described.

[0221] FIG. 25a is a plan view of a razor assembly 600 according to a sixth embodiment of the present disclosure as viewed from the front of the blade housing 10, FIG. 25b is a rear view as viewed from the back, and FIG. 25c is a perspective view as viewed from one side of the back.

[0222] The razor assembly 600 according to the sixth embodiment of the present disclosure includes a shaving blade 5, a razor cartridge including a blade housing 10, a connecting head 520, and a razor handle 530. One end of the shaving blade 5 has a cutting edge, and the other end is seated on a seating portion provided in the blade housing 10. At this time, the direction in which the shaving blade 5 is received in the blade housing 10 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, redundant description is omitted.

[0223] In FIG. 25a, one end of the connecting head 520 is detachably coupled to the blade housing 10 from the back surface of the blade housing 10. At this time, the blade housing 10 can rotate about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 is received with respect to the end of the connecting head. On the other hand, a central shaft 529 formed at the other end of the connecting head 520 is also coupled to the razor handle 530 so as to be rotatable about a rotation axis ax3 perpendicular to the lateral direction d1. In addition, the third axis ax3 is formed in a direction parallel to the longitudinal direction d2.

[0224] FIG. 26 is an exploded perspective view of the razor assembly 600 of FIG. 25a. Here, the blade housing 10 and the connecting head 520 are shown in a state of being coupled to each other.

[0225] On the opposite side of the blade housing 10, the central shaft 529 of the connecting head 520 is rotatably coupled to the clipper handle 530 with respect to the third axis ax3. The clipper handle 530 may be integrally formed as shown in Fig. 26, or may be composed of two storage members divided in the vertical direction. At the end of the central shaft 529, a pivot member 524 is provided, and a storage groove 525 is formed in the pivot member 524. The storage groove 525 houses the rotation magnet 40 in the direction of the third axis ax3. When the central shaft 529 is coupled to the clipper handle 530, the pivot member 524 is completely housed within the storage space of the clipper handle 530. At this time, the pivot member 524 is coupled to the inside of the stepped jaw portion 536 (see Fig. 27a) formed on the clipper handle 530. That is, the stepped collar portion 536 of the clipper handle 530 aligns with the stepped groove 526 formed on the pivot member 524.

[0226] On the other hand, an offset e is formed at a predetermined interval between the extension line d3 extending from the center of the rotation magnet 40 in the direction in which the rotation magnet 40 is arranged and the rotation axis ax3 of the connecting member 520 and the central shaft 529. That is, the center of the rotation magnet 40 is offset by the offset e from the rotation axis ax3. The fixed magnet 45 housed in the storage groove 535 (see Fig. 27a) within the clipper handle 530 is arranged to face the rotation magnet 40 in the neutral position, and thus the fixed magnet 45 is also offset by the offset e from the rotation axis ax3. Of course, such an offset e is formed in the front-rear direction of the connecting head 520, and thus cannot be seen in Figs. 27a and 27b described later.

[0227] Fig. 27a is a plan view showing the shape of the clipper assembly 600 when the connecting head 520 is in the neutral position, and Fig. 27b is a plan view showing the shape of the clipper assembly 600 when the connecting head 520 is in the rotation position. Here, a part of the clipper handle 530 is removed in the vertical direction so that the inside of the storage space 538 can be seen.

[0228] Referring to FIG. 27a, in the neutral position, the rotating magnet 40 is arranged to face the fixed magnet 45 in the longitudinal direction d2. Here, the polarities of the rotating magnet 40 and the fixed magnet 45 are different from each other, and an attractive force acts between them.

[0229] Referring to FIG. 27b, when the connecting head 520 rotates about the third axis ax3, the pivot member 524 rotates clockwise or counterclockwise with respect to the third axis ax3 from the neutral position. At this time, since the rotating magnet 40 is offset by an offset e from the third axis ax3, it will be somewhat separated from the position facing the fixed magnet 45.

[0230] However, since an attractive force acts between the rotating magnet and the fixed magnets 40 and 45, when the external force is removed, the rotating magnet 40 returns to its original facing position. As a result, the pivot member 524 and the connecting head 520 in which the rotating magnet 40 is housed also return to the neutral position while rotating in the opposite direction of the rotation direction.

[0231] On the other hand, although both the rotating magnet 40 and the fixed magnet 45 can be implemented with magnets in this way, in the sixth embodiment, since the attractive force between them is utilized, either the rotating magnet 40 or the fixed magnet 45 can be replaced with a ferromagnetic metal on which an attractive force acts by the opposing magnet. As such a ferromagnetic metal, it is preferable to use a ferromagnetic metal such as iron, cobalt, or nickel, but it is not limited to this, and other types may be used as long as they are substances on which an attractive force acts by a magnet.

[0232] When the pivot member 524 makes a rotational movement within the storage space 538, its rotation range is limited within a specific angle. This is for limiting the rotation range of the third axis ax3 during shaving within a range that does not induce discomfort to the user. In this embodiment, when the eccentric pivot member 524 rotates, it contacts both side walls of the storage space 538 to function as a stopper. However, it goes without saying that the stopper function can be provided by other methods as well.

[0233] FIG. 28 is a perspective view of the razor assembly 700 according to the seventh embodiment of the present disclosure, as seen from one side of the back of the blade housing 10.

[0234] The razor assembly 700 according to the seventh embodiment of the present disclosure includes a shaving blade 5, a razor cartridge including the blade housing 10, a connecting head 620, and a razor handle 630. One end of the shaving blade 5 has a cutting edge, and the other end is seated on a seating portion provided in the blade housing 10. At this time, the direction in which the shaving blade 5 fits into the blade housing 10 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, duplicate explanations are omitted.

[0235] In FIG. 28, one end of the connecting head 620 is detachably coupled to the blade housing 10 from the back of the blade housing 10. At this time, the blade housing 10 can rotate about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 fits with respect to the end of the connecting head. On the other hand, the central shaft 629 formed at the other end of the connecting head 620 is also coupled to the razor handle 630 so as to be rotatable about a rotation axis ax3 perpendicular to the lateral direction d1. In addition, the third axis ax3 is formed in a direction parallel to the longitudinal direction d2.

[0236] FIG. 29a is an exploded perspective view of the razor assembly 700 of FIG. 28, and FIG. 29b is a plan view of the exploded perspective view of the razor assembly 700 of FIG. 29a, as seen from the back. Here, the blade housing 10 and the connecting head 620 are shown in a state of being coupled to each other, and in FIG. 29b, a part of the razor handle 630 is vertically deleted to show the internal structure of the storage space 638.

[0237] On the opposite side of the blade housing 10, the central shaft 629 of the connecting head 620 is rotatably coupled to the razor handle 630 with respect to a third axis ax3. The razor handle 630 may be integrally formed as shown in Fig. 29a, or may be composed of two storage members divided in the vertical direction. At the end of the central shaft 629, a pivot member 624 is provided, and a storage groove 625 is formed in the pivot member 624. The storage groove 625 is formed in a direction d4 perpendicular to both the lateral direction d1 and the third axis ax3 to accommodate the rotation magnet 40. When the central shaft 629 is coupled to the razor handle 630, the pivot member 624 is completely received within the storage space of the razor handle 630. At this time, a fixed magnet 45 is provided in the magnet storage portion 636 of the razor handle 630, and the rotation magnet 40 and the fixed magnet 45 are all spaced apart from each other facing in the vertical direction d4 at the neutral position.

[0238] Figs. 30a and 30b are a perspective view and a plan view showing the shape of the razor assembly 700 when the connecting head 620 is in the neutral position, and Fig. 30c is a plan view showing the shape of the razor assembly 700 when the connecting head 620 is in the rotating position. Here, a part of the razor handle 630 is removed in the vertical direction so that the inside of the storage space 638 can be seen.

[0239] Referring to Figs. 30a and 30b, at the neutral position, the rotation magnet 40 is arranged facing the fixed magnet 45 in a direction d4 perpendicular to both. Here, the polarities of the rotation magnet 40 and the fixed magnet 45 are the same, and a repulsive force acts between the two.

[0240] Referring to FIG. 30c, when the connecting head 620 rotates about the third axis ax3, the pivot member 624 rotates clockwise or counterclockwise with respect to the third axis ax3 from the neutral position. At this time, at least a part of the rotating magnet 40 comes close to the fixed magnet 45, and the repulsive force between the rotating magnet and the fixed magnets 40, 45 increases. Therefore, when the external force is removed, the rotating magnet 40 receives the repulsive force of the fixed magnet 45 and returns to the original facing position (see FIG. 30b). As a result, the pivot member 624 and the connecting head 620 in which the rotating magnet 40 is housed also return to the neutral position while rotating in the opposite direction of the rotation direction.

[0241] When the pivot member 624 makes a rotational movement within the storage space 638, its rotation range is limited within a specific angle. This is to limit the rotation range with respect to the third axis ax3 during shaving within a range that does not induce discomfort to the user. In this embodiment, when the eccentric pivot member 624 rotates, it contacts the magnet housing portion 636 and functions as a stopper. However, it goes without saying that the stopper function can be provided by other methods as well.

[0242] FIG. 31 is an exploded perspective view of a razor assembly 800 according to an eighth embodiment of the present disclosure, as viewed from one side at the back of the blade housing 10.

[0243] The razor assembly 800 according to the eighth embodiment of the present disclosure includes a razor cartridge including a shaving blade 5 and a blade housing 10, a connecting head 720, and a razor handle 730. One end of the shaving blade 5 has a cutting edge, and the other end is seated on a seating portion provided in the blade housing 10. At this time, the direction in which the shaving blade 5 fits into the blade housing 10 is the lateral direction d1 perpendicular to the shaving direction. In addition, since the structure of the blade housing 10 is the same as that in FIG. 1, redundant descriptions are omitted.

[0244] In FIG. 31, one end of the connecting head 720 is detachably coupled to the blade housing 10 from the back surface of the blade housing 10. At this time, the blade housing 10 can rotate with respect to the end of the connecting head about a first axis ax1 parallel to the lateral direction d1 in which the blade 5 is accommodated. On the other hand, the central shaft 729 formed at the other end of the connecting head 720 is also coupled to the clipper handle 730 so as to be rotatable about a rotation axis ax3 perpendicular to the lateral direction d1. Further, the third axis ax3 is formed in a direction parallel to the longitudinal direction d2.

[0245] The clipper handle 730 may be integrally formed as shown in FIG. 31, or may be composed of two storage members separated in the longitudinal direction. A pivot member 724 is provided at the end of the central shaft 729, and a storage groove 725 is formed in the pivot member 724. The storage groove 725 is formed in the same direction as the lateral direction d1 and accommodates the rotation magnet 40. Such an arrangement direction of the storage groove 725 is merely an example, and the storage groove 725 can be arranged in any one direction in the radial direction of the central shaft 729.

[0246] When the central shaft 729 is coupled to the clipper handle 730, the pivot member 724 is completely accommodated within the storage space of the clipper handle 730. At this time, first and second fixed magnets 45 and 47 are respectively provided in the magnet storage portions 736a and 736b of the clipper handle 730, and at the neutral position, the rotation magnet 40 is disposed opposite and spaced apart from the first and second fixed magnets 45 and 47 in the lateral direction d1.

[0247] FIGS. 32a and 32b are a perspective view and a plan view showing the shape of the clipper assembly 700 when the connecting head 720 is in the neutral position, and FIG. 32c is a plan view showing the shape of the clipper assembly 700 when the connecting head 720 is in the rotation position. Here, a part of the clipper handle 730 is removed in the longitudinal direction so that the inside of the storage space 738 can be seen.

[0248] Referring to FIGS. 32a and 32b, in the neutral position, the rotating magnet 40 is disposed to face laterally in the direction d1 between the first and second fixed magnets 45, 47. Here, repulsive forces act between the rotating magnet 40 and the first fixed magnet 45, and between the rotating magnet 40 and the second fixed magnet 47. Among the three magnets 45, 40, 47 arranged in this way, in order for all repulsive forces to occur between two adjacent magnets, the polarities as illustrated in FIG. 24 may be adopted.

[0249] Referring to FIG. 32c, when the connecting head 720 rotates about the third axis ax3, the pivot member 724 rotates clockwise or counterclockwise about the third axis ax3 from the neutral position. At this time, the rotating magnet 40 comes to be at least partially close to the first fixed magnet 45 while simultaneously also being close to the second fixed magnet 47. Therefore, the repulsive force between the rotating magnet and the first fixed magnet 40, 45 and the repulsive force between the rotating magnet and the second fixed magnet 40, 47 both increase. Therefore, when the external force is removed, the rotating magnet 40 is subjected to the repulsive forces of the first and second fixed magnets 45, 47 and returns to its original facing position (see FIG. 32b). As a result, the pivot member 724 and the connecting head 720 in which the rotating magnet 40 is housed also return to the neutral position while rotating in the opposite direction of the rotation direction.

[0250] When the pivot member 724 rotates within the storage space 738, it is desirable that its rotation range be restricted within a specific angle. This is a necessary function for restricting the rotation range with respect to the third axis ax3 during shaving within a range that does not induce discomfort to the user. Although not shown in FIGS. 31 to 32c, in this embodiment as well, a stopper can be provided in the form shown in FIG. 33. Referring to FIG. 33, one or more protrusion portions 728a, 728b are formed in the circumferential direction of the central shaft 729. Such protrusion portions 728a, 728b fit into slot portions 727a, 727b formed in the circumferential direction at the terminal ends of the razor handle 730 so as to correspond to the protrusion portions 728a, 728b. Accordingly, the rotation range of the central shaft 729 functions as a stopper in such a manner that it is restricted within the range in which the protrusion portions move within the slot portions.

[0251] The above description merely exemplarily explains the technical idea of this embodiment. For those with ordinary knowledge in the technical field to which this embodiment belongs, various modifications and deformations are possible without departing from the essential characteristics of this embodiment. Therefore, this embodiment is not for limiting the technical idea of this embodiment but for explaining it, and the scope of the technical idea of this embodiment is not limited by such an embodiment. The protection scope of this embodiment should be interpreted according to the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

Claims

1. A razor cartridge including at least one shaving blade having a cutting edge and a blade housing for laterally receiving the at least one shaving blade, A connecting head having one side detachably coupled to the blade housing, A razor handle including a head adapter rotatably coupled to the connecting head about a rotation axis perpendicular to the lateral direction and a grip portion extending from the head adapter, A restoring force providing unit including one or more rotating magnets disposed on the other side of the connecting head and rotatable about the rotation axis together with the connecting head, and one or more fixed magnets fixed to the razor handle and arranged such that an attractive force acts on the rotating magnets in a neutral position, The rotating magnet and the fixed magnet are configured to provide a restoring force for returning the connecting head to the neutral position when the connecting head rotates about the rotation axis from the neutral position, The rotation axis of the rotating magnet is closer to the rotating magnet than the fixed magnet, When the rotating magnet rotates, the distance between the rotating magnet and the fixed magnet increases, The head adapter includes a storage space therein, and the connecting head is accommodated in the storage space, The connecting head is connected to the razor handle by a fastener passing through the storage space, The one or more rotating magnets and the one or more fixed magnets are aligned along a vertical axis perpendicular to the lateral direction when the connecting head is in the neutral position, The one or more rotating magnets do not contact the one or more fixed magnets when the connecting head rotates about the rotation axis. A razor assembly characterized by this.

2. The fixed magnet is arranged such that an attractive force acts on the rotating magnet in a vertical direction perpendicular to the lateral direction and the direction of the rotation axis in the neutral position. The razor assembly according to claim 1, characterized by this.

3. The rotating magnet is positioned relatively closer to the blade housing than the fixed magnet. The razor assembly according to claim 1, characterized by this.

4. It further includes a magnet housing for accommodating the fixed magnet, The magnet housing is configured to fit into the storage space of the razor handle, and the razor assembly according to claim 1 is characterized by this.

5. The magnet housing includes a housing-side opening formed on one side surface of the magnet housing facing the rotating magnet, At least a part of the fixed magnet is configured to be exposed to the outside of the magnet housing through the housing-side opening, and the razor assembly according to claim 4 is characterized by this.

6. The connecting head includes a head-side opening formed on the other side surface of the connecting head facing the fixed magnet, At least a part of the rotating magnet is configured to be exposed to the outside of the connecting head through the head-side opening, and the razor assembly according to claim 1 is characterized by this.

7. One surface on the other side of the connecting head has a curved profile, and the razor assembly according to claim 1 is characterized by this.

8. The center of the radius of curvature of the curved profile is located on the rotation axis, and the razor assembly according to claim 7 is characterized by this.

9. The head adapter includes a limiting step portion, The connecting head includes a rotation limiting portion formed on one surface of the connecting head, The rotation range of the connecting head is limited by the rotation limiting portion coming into contact with the limiting step portion, and the razor assembly according to claim 1 is characterized by this.

10. At least one of the rotating magnet and the fixed magnet, Has a cylindrical shape or a spherical shape, and the razor assembly according to claim 1 is characterized by this.

11. The rotating magnet and the fixed magnet are permanent magnets, and the razor assembly according to claim 1 is characterized by this.

12. Either one of the rotating magnet and the fixed magnet is a permanent magnet, and the other one is a magnetic metal on which an attractive force acts by the permanent magnet, and the razor assembly according to claim 1 is characterized by this.

13. Either one of the rotating magnet and the fixed magnet made of magnetic metal has a spherical shape, and the razor assembly according to claim 12 is characterized by this.

14. At the neutral position, the point where the separation distance between the rotating magnet and the fixed magnet is the shortest is located on a virtual reference plane that is perpendicular to the lateral direction and includes the rotation axis, the separation distance between the rotating magnet and the fixed magnet increases as it moves away from the virtual reference plane in the lateral direction, and the distribution of the separation distance between the rotating magnet and the fixed magnet along the lateral direction is symmetric with respect to the virtual reference plane. The razor assembly according to claim 12, characterized by this.

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