Patent Publication Number: US-11383397-B2

Title: Razor assembly

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     Pursuant to 35 U.S.C. § 119(a), this application claims the benefit of earlier filing date and right of priority to Korean Patent Application Number 10-2018-0158794, filed on Dec. 11, 2018, the contents of which are hereby incorporated by reference herein in its entirety. 
     TECHNICAL FIELD 
     The present disclosure in some embodiments relates to a razor assembly. 
     BACKGROUND 
     The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. 
     Generally, a razor cartridge is configured to be pivotable about a razor handle between a neutral position and a pivot position. The pivoting movement of the razor cartridge is basically centered about a rotation axis (hereinafter ‘pivot axis’) parallel to the alignment direction of shaving blades. 
     Pivot movement about the pivot axis helps to do an efficient shaving by allowing the shaving blades to be in smooth contact with the cutting surface, e.g. the user&#39;s skin. This pivot axis is usually fixed at a specific position in a blade housing. 
     However, a conventional wet razor with the pivot axis fixed may need to bear a large load at its blade housing during shaving when a sharp bend occurs on the skin contacting surface or when the hair to be cut is relatively thick. 
     This load may be wholly delivered to the user&#39;s skin, along with the force that the user transmits through the razor handle and the friction generated between the blade housing and the skin contacting surface. 
     As a result, an excessive force may be applied to the user&#39;s skin, thereby causing a safety issue in which the user&#39;s skin is damaged on the surface or cut before the user realizes that the blade housing is overloaded. 
     On the other hand, the conventional one-way wet razor has its pivot axis typically located adjacent to a guard portion. By positioning a pivot axis close to the guard portion on the blade housing, a high load would be applied to the guard portion, thereby enhancing the skin stretching function of the guard. 
     This arrangement of the pivot axis also maintains a good contact between the blade housing and the skin contacting surface by generating a natural rotational moment on the blade housing during shaving of curved surfaces. 
     On the other hand, a two-way wet razor features a cap and a guard with their positions switched according to the shaving direction and thus, it is commonly configured to have symmetrical formations of the blade housing and the shaving blade. 
     This makes it difficult for conventional two-way wet razors to position the pivot axis to a specific area of the blade housing, and it is common to place the pivot axis on the symmetry axis of the blade housing and the shaving blade. 
     As a result, such a conventional one-way wet razor has the fixed pivot axis suffering from a load generated due to unevenness of the skin or frictional force incurring a scratch or scar on the skin, and a two-way wet razor involves such pivot axis arranged in a way to reduce the function of the blade housing as a guard and to work against maintaining a good skin contact, impeding a smooth shaving experience. 
     U.S. Pat. No. 7,331,107 (hereinafter referred to as “patent document 1”) and U.S. Pat. No. 9,193,077 (“patent document 2”), which relate to conventional wet razors, disclose providing a user with convenient handling through a pivot movement of the razor handle. 
     However, the razors disclosed by patent document 1 and patent document 2 make a handle pivot about a fixed pivot axis. When shaving, the razor handle is constantly rotated about the pivot axis, thus concentrating the force on the razor cartridge at a point where the pivot axis is formed. When an unevenness or protrusion surface occurs due to the skin condition of the user, the skin is subjected to a greater load by the force concentrated on the fixed pivot axis. 
     In addition, the disclosed razors have their razor handle and razor cartridge connected at different sites, which disadvantageously limits the angle between the two components at each site. 
     In particular, the razors disclosed by patent documents 1 and 2 are incapable of pivoting at each site where their razor handle and razor cartridge are connected, thereby failing to provide a smoother handling to the user. 
     SUMMARY 
     In accordance with one embodiment, the present disclosure provides a razor assembly including a razor cartridge, a connector and a recovering force provider. The razor cartridge includes at least one shaving blade having a cutting edge, and a blade housing configured to receive the at least one shaving blade in a transverse direction. The connector is configured to extend in parallel with the transverse direction, and to be coupled to the blade housing so as to be pivotable around a pivot axis movable between a first rest position and a first position spaced apart from the first rest position in a first shaving direction. The recovering force provider includes a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position when the pivot axis is located between the first rest position and the first position. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a razor assembly according to one embodiment of the present disclosure. 
         FIG. 2  is an elevational view of a razor assembly according to one embodiment of the present disclosure. 
         FIGS. 3A and 3B  are a side and cross-sectional view and a plan and cross-sectional view of a connector at a first rest position according to one embodiment of the present disclosure. 
         FIGS. 4A and 4B  are a side and cross-sectional view and a plan and cross-sectional view of a connector at a first position according to embodiment of the present disclosure. 
         FIGS. 5A and 5B  are a side and cross-sectional view and a plan and cross-sectional view of a connector at a second position according to one embodiment of the present disclosure. 
         FIGS. 6A and 6B  are plan and cross-sectional views of a connector before and after pivoting about a second pivot axis with respect to a blade housing according to one embodiment of the present disclosure. 
         FIGS. 7A and 7B  are views illustrating movement of a blade housing and a razor handle when a load is applied to the blade housing during shaving according to one embodiment of the present disclosure. 
         FIGS. 8A and 8B  are views illustrating a change in the distribution of force applied to the blade housing according to the movement of a first pivot axis according to one embodiment of the present disclosure. 
         FIGS. 9A and 9B  are views illustrating pivoting of a blade housing according to one embodiment of the present disclosure when shaving along a curved surface. 
         FIGS. 10A to 10C  are views illustrating that a connector is pivoted when a first pivot axis is in a first rest position according to one embodiment of the present disclosure. 
         FIGS. 11A to 11C  are diagrams of various embodiments of a recovering force provider according to the present disclosure. 
         FIGS. 12A to 12C  are views illustrating movements of a first pivot axis of a razor assembly according to further embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure is primarily aimed at providing proper handling of a razor to the user during shaving by appropriately moving the pivot axis. 
     In addition, the present disclosure is primarily aimed at providing a safe shave to the user by appropriately moving the pivot axis according to the degree of load on the blade housing of a razor. 
     Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, like reference numerals designate like elements, although the elements are shown in different drawings. Further, in the following description of some embodiments, a detailed description of known functions and configurations incorporated therein will be omitted for the purpose of clarity and for brevity. 
     In describing the components of the embodiments according to the present disclosure, various terms such as first, second, i), ii), a), b), etc., may be used solely for the purpose of differentiating one component from the other, not to imply or suggest the substances, the order or sequence of the components. Throughout this specification, when a part “includes” or “comprises” a component, the part is meant to further include other components, not to exclude thereof unless specifically stated to the contrary. 
     In this specification, the first shaving direction refers to the direction in which shaving is performed using a conventional one-way wet razor and the second shaving direction refers to the opposite direction. Taking  FIG. 1  as an example, the negative x-axis direction becomes the first shaving direction, and the positive x-axis direction becomes the second shaving direction. 
       FIG. 1  is a perspective view of a razor assembly  10  according to one embodiment of the present disclosure. 
     As shown in  FIG. 1 , the razor assembly  10  includes a razor cartridge  110 , a connector  120 , a recovering force provider  130 , and a razor handle  140 . 
     The razor cartridge  110  may include a blade housing  112 , at least one shaving blade  114 , and one or more guide rails  116 . 
     The blade housing  112  may receive at least one shaving blade  114  in a transverse direction d 1  at a seating portion formed in the blade housing  112 . 
     At least one shaving blade  114  has a cutting edge capable of cutting the hair when shaving. 
     The blade housing  112  may include one or more guide rails  116 . 
     The guide rail  116  may be fitted with a guided shaft member  128  (shown in  FIG. 3A ) of the connector  120  or penetrated by the guided shaft member  128 . 
     For this purpose, the guide rail  116  may have an elongated groove or an elongated hole parallel to the longitudinal direction d 2  of the blade housing  110 . 
     The guided shaft member ( 128  of  FIG. 3A ) fitted with the guide rail  116  or penetrating the guide rail  116  may be configured to be movable along the guide rail  116 . 
     In  FIG. 1 , two guide rails  116  are illustrated as being disposed one by one at both ends of the transverse direction d 1  of the blade housing  112 , but are not limited thereto. 
     For example, one guide rail  116  may be disposed in the center of the blade housing  112 . In this case, the guided shaft member  128  may be coupled to both side walls of the guide rail  116  or may be movably coupled along the guide rail  116  by penetrating through an elongated hole formed in the guide rail  116 . 
     The connector  120  is disposed between the razor cartridge  110  and razor handle  140  and is responsible for interconnecting the two members. 
     The connector  120  may include a connector arm  122 , a connector hub  124 , a hub side connecting portion  126 , and the guided shaft member  128  as shown in  FIG. 3A . 
     The connector arm  122  is an area on the connector  120 , which is coupled to the blade housing  112  so as to be pivotable about a first pivot axis ‘A’ parallel to transverse direction d 1 . 
     For example, the connector arm  122  may be coupled to the blade housing  112  by having the guided shaft member  128  extending in transverse direction d 1  from the sidewalls of the connector arm  122  fitted into an elongate groove formed in the guide rail  116  or penetrating the elongated hole. 
     One side of the connector hub  124  may be connected to the connector arm  122 , and the other side of the connector hub  124  may be connected to the hub side connecting portion  126 . 
     The connector arm  122  may be coupled to the connector hub  124  to be pivotable about a second pivot axis ‘B’ perpendicular to the cutting surface ( FIG. 3A  at E) of the blade housing  112 , but the disclosure is not limited to this. 
     For example, the connector arm  122  and the connector hub  124  may be integrally formed or may be coupled so that they are fixed together. 
     The hub side connecting portion  126  may be coupled with a handle side connecting portion  142  of the razor handle  140 , which interconnects the connector  120  and the razor handle  140 . 
     The hub side connecting portion  126  may be configured to be detachably coupled to the handle side connecting portion  142  so that razor cartridge  110  coupled to the connector  120  can be replaced with a new one, although the present disclosure is not so limited. 
     For example, the hub side connecting portion  126  and the handle side connecting portion  142  may be integrally configured or coupled so as not to be detached. 
     The guided shaft member  128  may be coupled to the guide rail  116 , whereby it can be movably coupled to the razor cartridge  110 . Detailed description in this regard will be presented with reference to  FIGS. 3A and 3B . 
     Referring back to  FIG. 1 , the first pivot axis ‘A’ is fixed on the guided shaft member  128  and is movable in unison with the guided shaft member  128 . Accordingly, the first pivot axis ‘A’ may move along the guide rail  116  in unison with the guided shaft member  128 . 
     The guided shaft member  128  and the first pivot axis ‘A’ may be configured to be movable along the guide rail  116  between a first position and a second position spaced apart in the second shaving direction from a first rest position. 
     Here, the first rest position refers to the position of the guided shaft member  128  on the guide rail  116  when no external force is applied to the razor assembly  10 . The first position refers to the limit point at which the guided shaft member  128  can move in the first shaving direction along the guide rail  116 . The second position refers to the limit point at which the guided shaft member  128  can move in the second shaving direction. 
     The recovering force provider  130  may include a first recovering member  132  and a second recovering member  134 . 
     The first recovering member  132  is configured to provide the connector  120  with a recovering force for recovering first pivot axis ‘A’ to the first rest position when first pivot axis ‘A’ is located between the first rest position and the first position. 
     The second recovering member  134  is configured to provide the connector  120  with a recovering force for recovering first pivot axis ‘A’ to the first rest position when first pivot axis ‘A’ is located between the first rest position and the second position. 
     For example, where the first recovering member  132  and the second recovering member  134  are made of an elastic member such as rubber, when the first pivot axis ‘A’ is located between the first rest position and the first position, the first recovering member  132  may undergo an extension to generate a recovering force for pulling the connector  120  toward the first rest position. In contrast, the second recovering member  134  may undergo a compression to generate a recovering force for pushing the connector  120  to the first rest position. 
     The recovering force provided by the recovering force provider  130  to the connector  120  may include different forces depending on the materials of the first recovering member  132  and the second recovering member  134 . 
     For example, where the first recovering member  132  and the second recovering member  134  are made of an elastic material, the recovering force may include an elastic force. Where the first recovering member  132  and the second recovering member  134  are made of a magnetic element having magnetic properties, the recovering force may include a magnetic force. 
     In  FIG. 1 , the recovering force provider  130  is illustrated as being made of rubber, but the present disclosure is not limited thereto. 
     For example, the recovering force provider  130  may be made of another elastic member such as a leaf spring, a coil spring, or may be made of a plurality of magnetic elements having magnetic properties. Detailed description in this regard will be provided with reference to  FIGS. 11A-11C . 
     The razor handle  140  is coupled with the connector  120  to provide an area for the user to grasp the razor assembly  10 . 
     The razor handle  140  may include a handle side connecting portion  142 , a grip portion  144 , and a button portion  146 . 
     The handle side connecting portion  142  is a portion on the razor handle  140 , which is engaged with the hub side connecting portion  126 . The grip portion  144  is a portion on the razor handle  140 , by which the user can grasp the razor handle  140 . 
     The button portion  146  is configured to release the coupling between the handle side connecting portion  142  and the hub side connecting portion  126 . 
     For example, the user may operate the button unit  146  to remove, from the razor handle  140 , the connector  120  as well as the razor cartridge  110  connected to the connector  120 . This allows the user to replace an old razor cartridge  110  with a new one. 
       FIG. 2  is an elevational view of a razor assembly  10  according to one embodiment of the present disclosure. 
     As shown in  FIG. 2 , the shaving blades  114  may include one or more first blades  1142  and one or more second blades  1144 . 
     The first blade  1142  may be disposed on the blade housing  112  and spaced apart from the second blade  1144  in a first shaving direction. 
     The first blade  1142  may have a first cutting edge configured to cut the hair when shaving in the first shaving direction. 
     The second blade  1144  may have a second cutting edge configured to cut the hair when shaving in the second shaving direction. 
     The blade housing  112  may include a first skin contact member  117  and a second skin contact member  118 . 
     The first skin contacting member  117  is disposed adjacent to the first blade  1142 , and the second skin contacting member  118  is disposed adjacent to the second blade  1144 . 
     The first skin contact member  117  and the second skin contact member  118  may define a shaving plane by touching the skin when shaving. 
     Each of the first skin contact member  117  and the second skin contact member  118  may include one or more of a guard bar and a lubrication band. 
     For example, either the guard bar or the lubrication band is provided on both the first skin contact member  117  and the second skin contact member  118 . Alternatively, a guard bar may be provided on any one of the first skin contact member  117  and the skin contact member  118  while the lubrication band may be provided on the other one of the first skin contact member  117  and the skin contact member  118 , which is not provided with a guard bar. 
     However, the present disclosure is not limited thereto, and both the guard bar and the lubrication band may be configured to be provided on both the first skin contact member  117  and the second skin contact member  118 . 
     The guard bar may stretch the user&#39;s skin in the direction in which shaving proceeds before the hair is cut by the shaving blades  114 . 
     As the user&#39;s skin is stretched by the guard bar, the user&#39;s hair can stand up in a direction perpendicular to the user&#39;s skin surface, which facilitates hair cutting by the shaving blades  114 . 
     The guard bar may be made of plastic or rubber, but is not limited thereto. For example, the guard bar may be composed of a plastic frame partially formed with a rubber section. 
     The lubricating band serves to apply a lubricating material to the user&#39;s skin after cutting for smoothing out the skin roughened by the cutting, and it helps to smoothly glide the razor assembly  10 . 
     The lubrication band may be made of, for example, a flexible material, a moisture absorbing porous material, or a shaving aid. 
     The lubrication band may expand upon contact with water, and may provide a water-soluble material including lubricating ingredients, skin soothing ingredients, and the like to the user&#39;s skin. 
     In the first rest position, the guided shaft member  128  and the first pivot axis ‘A’ may at least partially overlap the area between the first cutting edge and the first cutting edge when viewed in front of the cutting surface (E of  FIG. 3A ) of the blade housing  112 . 
     In this case, the guided shaft member  128  is positioned at the center of the blade housing  112  at the first rest position, thereby facilitating the movement of the first pivot axis ‘A’ along the shaving direction. 
       FIGS. 3A and 3B  are cross-sectional and rear views of the guided shaft member  128  positioned at the first rest position according to one embodiment of the present disclosure. 
     Specifically,  FIG. 3A  is a side and cross-sectional view of the razor cartridge  110  and the connector  120  when the guided shaft member  128  is in the first rest position, and  FIG. 3B  is a plan and cross-sectional view of the razor cartridge  110  and the connector  120  when the connector  120  is in the first rest position. 
     In  FIG. 3B , for convenience of description, the connector hub  124  and the hub side connecting portion  126  are omitted. 
     As shown in  FIGS. 3A and 3B , the guided shaft member  128  fits into the elongated groove formed in the guide rail  116  or passes through the elongated hole formed in the guide rail  116  to be movably coupled to the razor cartridge  110 . 
     The guided shaft member  128  may extend in transverse direction d 1  from both side walls of the connector arm  122 . 
     In  FIG. 3B , two pieces of the guided shaft member  128  are illustrated as extending outward in transverse direction d 1 , but the present disclosure is not limited thereto. 
     For example, the guided shaft member  128  may be configured as one or two members extending in transverse direction d 1  from the connector arm  122 . 
     The first recovering member  132  may be connected at one side to the blade housing  112  and at the other side to the connector  120 . 
     The second recovering member  134  may be connected at one side to the blade housing  112  and at the other side to the connector  120 . 
     When the guided shaft member  128  is in the first rest position, the displacements generated in the first recovering member  132  and the second recovering member  134  may be the same. 
     Thus, assuming that the first recovering member  132  and the second recovering member  134  have the same elastic modulus, they are subjected to the same elastic force generated by the displacement. In this case, the resultant recovering force applied to the connector  120  may be zero. 
     Alternatively, when the guided shaft member  128  is in the first rest position, the first recovering member  132  and the second recovering member  134  may be configured to generate no displacement. This incurs no elastic force, leading to the resultant recovering force of zero. 
     With the zero recovering force applied to the connector  120 , the guided shaft member  128  may stop at the first rest position without a change in position. 
       FIGS. 4A and 4B  are cross-sectional and rear views of the connector  120  located at a first position according to one embodiment of the present disclosure. 
     Specifically,  FIG. 4A  is a side and cross-sectional view of the razor cartridge  110  and the connector  120  when the guided shaft member  128  is in the first position, and  FIG. 4B  is a plan and cross-sectional view of the razor cartridge  110  and the connector  120  when the guided shaft member  128  is in the first position. 
     In  FIG. 4B , the connector hub  124  and the hub side connecting portion  126  are omitted for convenience of description. 
     As shown in  FIGS. 4A and 4B , when the guided shaft member  128  is in the first position, the first recovering member  132  may be extended and may have a positive displacement. In contrast, the second recovering member  134  may be compressed and may have a negative displacement. 
     Since the elastic material generates an elastic force in a direction of reducing displacement, the first recovering member  132  may generate an elastic force for pulling the connector  120  in the second shaving direction, and the second recovering member  134  may generate an elastic force for pushing the connector  120  in the second shaving direction. Accordingly, the resultant recovering force is directed in the second shaving direction. 
     Thus, when no other external force is applied to the razor assembly  10 , the guided shaft member  128  may move in the second shaving direction by the resultant recovering force acting in the second shaving direction. 
     This movement of the guided shaft member  128  may continue up to the first rest position at which the resultant recovering force of the recovering force provider  130  becomes zero. 
     When the first pivot axis ‘A’ is located between the first rest position and the first position, the closer the first pivot axis ‘A’ is to the first position, the greater the positive displacement value of the first recovering member  132  becomes, and the greater the negative displacement value of the second recovering member  134  becomes. 
     As the displacement increases, the magnitude of the elastic force generated in the first recovering member  132  and the second recovering member  134  also increases, adding to the resultant recovering force. This increase in resilience results in a better handling for user&#39;s benefit. 
     For example, when the displacement values of the recovering members  132  and  134  are small, a relatively small recovering force is generated by the recovering members  132  and  134 , thereby providing a smooth handling to the user. 
     On the contrary, when the displacement values of the recovering members  132  and  134  are large, a relatively large recovering force is generated by the recovering members  132  and  134  to restore the connector  120  displaced so far so quickly to the first rest position. This can prepare the razor assembly  10  after one stroke for the next stroke. 
       FIGS. 5A and 5B  are cross-sectional and rear views of a connector located in a second position according to one embodiment of the present disclosure. 
     Specifically,  FIG. 5A  is a side and cross-sectional view of the razor cartridge  110  and the connector  120  when the guided shaft member  128  is in the second position, and  FIG. 5B  is a plan and cross-sectional view of the razor cartridge  110  and the connector  120  when the guided shaft member  128  is in the second position. 
     In  FIG. 5B , for convenience of explanation, the connector hub  124  and the hub side connecting portion  126  are omitted. 
     As shown in  FIGS. 5A and 5B , when the guided shaft member  128  is in the second position, the first recovering member  132  may be compressed and may have a negative displacement. Conversely, the second recovering member  134  may be extended and may have a positive displacement. 
     Thanks to the elastic material generating an elastic force in a direction of reducing displacement, the first recovering member  132  generates an elastic force for pushing the connector  120  in the first shaving direction, and the second recovering member  134  generates an elastic force for pulling the connector  120  in the first shaving direction. Accordingly, the resultant recovering force is directed in the first shaving direction. 
     Thus, when no other external force is applied to the razor assembly  10 , the guided shaft member  128  may move in the first shaving direction by the resultant recovering force acting in the first shaving direction. 
     This movement of the guided shaft member  128  may continue up to the first rest position at which the resultant recovering force becomes zero. 
     When first pivot axis ‘A’ is located between the first rest position and the second position, the closer the first pivot axis ‘A’ is to the second position, the greater the negative displacement value of the first recovering member  132  becomes, and the greater the positive displacement value of the second recovering member  134  becomes. 
     As the displacement increases, the magnitude of the elastic force generated in the first recovering member  132  and the second recovering member  134  also increases, adding to the resultant recovering force. This increase in resilience facilitates the user&#39;s handling of the razor assembly  10 . 
     For example, when the displacement values of the recovering members  132  and  134  are small, a relatively small recovering force is generated by the recovering members  132  and  134 , thereby providing a smooth handling to the user. 
     On the contrary, when the displacement values of the recovering members  132  and  134  are large, a relatively large recovering force is generated by the recovering members  132  and  134  to restore the connector  120  displaced so far so quickly to the first rest position. This can prepare the razor assembly  10  after one stroke for the next stroke. 
       FIGS. 6A and 6B  are plan and cross-sectional views of the connector  120  before and after pivoting about second pivot axis ‘B’ with respect to the blade housing  112  according to one embodiment of the present disclosure. 
     Specifically,  FIG. 6A  is a plan and cross-sectional view showing that the connector  120  pivoted counterclockwise about second pivot axis ‘B’ with respect to the blade housing  112 , and  FIG. 6B  is a plan and cross-sectional view of the connector  120  pivoted clockwise about second pivot axis ‘B’ with respect to the blade housing  112 . 
     In  FIGS. 6A and 6B , the connector hub  124  and the hub side connecting portion  126  are omitted for convenience of description. 
     As shown in  FIG. 3A  to  FIG. 5B , a space due to tolerance may be formed between the guided shaft member  128  and the opposing inner walls of the guide rail  116 , which face the guided shaft member  128  in the direction of the first pivot axis ‘A’. 
     This space is effective to minimize contact between the guided shaft member  128  and the opposing inner walls of the guide rail  116 , thereby facilitating smooth movement of the guided shaft member along the guide rail  116 . 
     Further, the space between the guided shaft member  128  and the opposing inner walls of the guide rail  116  may provide a room for the connector  120  to pivot about second pivot axis ‘B’ with respect to the blade housing  112 . 
     For example, as shown in  FIG. 6A , through the space between the guided shaft member  128  and the opposing inner walls of the guide rail  116 , the connector arm  122  may be pivoted counterclockwise about second pivot axis ‘B’ with respect to the blade housing  112 . 
     In this case, the guided shaft member at right side  128 A may be adjacent to the second position, and the guided shaft member at left side  128 B may be adjacent to the first position. 
     Accordingly, the first recovering member  132  is compressed at its right region  132 A to provide a recovering force that pushes the right-side guided shaft member  128 A to the first rest position, and is extended at its left region  132 B to provide a recovering force for pulling the left-side guided shaft member  128 B to the first rest position. 
     Conversely, the second recovering member  134  is extended at its right region  134 A to provide a recovering force that pulls the right-side guided shaft member  128 A to the first rest position, and is compressed at its left region  134 B to provide a recovering force for pushing the left-side guided shaft member  128 B to the first rest position. 
     As a result, when the connector arm  122  pivots counterclockwise about second pivot axis ‘B’ with respect to the blade housing  112 , the first recovering member  132  and the second recovering member  134  may provide a recovering force for recovering the right-side guided shaft member  128 A and the left-side guided shaft member  128 B to the first rest position, that is, a recovering force for pivoting the connector  120  clockwise. 
     As shown in  FIG. 6B , through the space between the guided shaft member  128  and the opposing inner walls of the guide rail  116 , the connector arm  122  may be pivoted clockwise about second pivot axis ‘B’ with respect to the blade housing  112 . 
     In this case, the right-side guided shaft member  128 A may be adjacent to the first position, and the left-side guided shaft member  128 B may be adjacent to the second position. 
     Accordingly, the first recovering member  132  is extended at its right region  132 A to provide a recovering force that pulls the right-side guided shaft member  128 A to the first rest position, and is compressed at its left region  132 B to provide a recovering force for pushing the left-side guided shaft member  128 B to the first rest position. 
     Conversely, the second recovering member  134  is compressed at its right region  134 A to provide a recovering force that pushes the right-side guided shaft member  128 A to the first rest position, and is extended at its left region  134 B to provide a recovering force for pulling the left-side guided shaft member  128 B to the first rest position. 
     As a result, when the connector arm  122  pivots clockwise about second pivot axis ‘B’ with respect to the blade housing  112 , the first recovering member  132  and the second recovering member  134  may provide a recovering force for recovering the right-side guided shaft member  128 A and the left-side guided shaft member  128 B to the first rest position, that is, a recovering force for pivoting the connector  120  counterclockwise. 
     The razor assembly  10  according to one embodiment of the present disclosure may be configured to allow connector  120  to be pivotable with respect to the blade housing  112  in a predetermined angular range about second pivot axis ‘B’ by using the space between the guided shaft member  128  and the opposing inner walls of the guide rail  116 . 
     Therefore, the blade housing  112  according to one embodiment of the present disclosure may be configured to be pivotable with respect to the connector  120  and up to the razor handle  140  connected to the connector  120  in a predetermined angular range about second pivot axis ‘B’. 
       FIG. 7A  and  FIG. 7B  are views illustrating movement of the blade housing  112  and the razor handle  140  when a load is applied to the blade housing  112  during shaving according to one embodiment of the present disclosure. 
     Specifically,  FIG. 7A  illustrates a situation in which a load is started to be applied to the blade housing  112  moving in the first shaving direction, and  FIG. 7B  illustrates a situation right after a load is applied to the blade housing  112 . 
     As shown in  FIG. 7A , when shaving in the first shaving direction, the blade housing  112  may move in that direction while being in contact with a skin contacting surface ‘S’. 
     As cutting surface ‘E’ and skin contacting surface ‘S’ of the blade housing  112  come into contact with each other, a frictional force may be generated on the blade housing  112 . 
     This frictional force acts in a second shaving direction opposite to the direction of movement of the blade housing  112  and thus hinders movement of the blade housing  112  in the first shaving direction. 
     Meanwhile, the connector  120  is configured to allow the guided shaft member  128  to move along the guide rail  116 , so that the guided shaft member  128  can move in the first shaving direction in unison with the razor handle  140 . 
     By this time, the guided shaft member  128  may have been slightly moved away from the first rest position toward the first position. In this case, the first recovering member  132  may be extended and the second recovering member  134  may be compressed. 
     As shown in  FIG. 7B , the blade housing  112  may be caught by flections ‘T’ formed on skin contacting surface ‘S’, generating a large load on the blade housing  112 . 
     This load may occur not only when the blade housing  112  is caught by flections ‘T’ on skin contacting surface ‘S’, but also when the bend of skin contacting surface ‘S’ is severe or when cutting the thick hair. 
     When such a load is applied to the blade housing  112 , additional resistance may be generated in the second shaving direction on top of the frictional force generated in cutting surface ‘E’ of the blade housing  112 . 
     This resistive force may further impede the movement of the blade housing  112  in the first shaving direction, which can bring the blade housing  112  to a momentary stop on skin contacting surface ‘S’. 
     Meanwhile, the guided shaft member  128  may be located closer to the first position along the guide rail  116 . In this case, the first recovering member  132  may be extended more and the second recovering member  134  may be compressed more. 
     This will further increase the magnitude of the recovering force generated in the first recovering member  132  and the second recovering member  134 . 
     At this time, the resultant recovering force generated in the recovering force provider  130  is directed in the first shaving direction, which can alleviate the frictional force and a part of the resistance due to the load acting in the second shaving direction on the blade housing  112 . 
     When the guided shaft member  128  is sufficiently moved toward the first position such that the resultant recovering force generated by the recovering force provider  130  can withstand the frictional and resistive forces acting on the blade housing  112 , the blade housing  112  can move out of the momentary stop and move back to the first shaving direction. 
     In order for the resultant recovering force generated by the recovering force provider  130  to overcome the frictional and resistive forces acting on the blade housing  112 , the guided shaft member  128  needs to be moved to a sufficient degree, which may take some time for that movement. 
     Such time consumption may be used as an opportunity for alerting the user of a heavy load occurred in the blade housing  112 . 
     For example, a user may be aware of a situation in which the blade housing  112  stops during shaving, and then perform a safe shaving by reducing a force applied to the razor assembly  10  or by varying the pivot angle of the razor handle  140 . 
       FIGS. 7A and 7B  illustrate an exemplary shaving in the first shaving direction, but the present disclosure is not limited thereto. Therefore, the description related to  FIGS. 7A and 7B  can be equally applied to the second shaving direction. 
       FIGS. 8A and 8B  are views illustrating a change in the distribution of force applied to the blade housing  112  according to the movement of first pivot axis ‘A’ according to one embodiment of the present disclosure. 
     Specifically,  FIG. 8A  is a diagram of the blade housing  112  and the razor handle  140  when the first pivot axis ‘A’ is in the first position.  FIG. 8B  shows when first pivot axis ‘A’ is in the second position. 
     As shown in  FIGS. 8A and 8B , when in shaving, the blade housing  112  may receive a vertical pressing force F 1 , a normal force F 2 , a horizontal frictional force F 3 , a first horizontal recovering force F 4  and a second horizontal recovering force F 5  acting thereon. 
     The vertical pressing force F 1  refers to the force exerted downward on the blade housing  112  by the connector  120 , and the normal force F 2  refers to the force exerted upward on the blade housing  112  by skin contacting surface ‘S’. 
     The normal force F 2  may be evenly distributed on cutting surface ‘E’ of the blade housing  112  where the blade housing  112  is in contact with skin contacting surface ‘S’. 
     The horizontal frictional force F 3  refers to the frictional force generated between cutting surface ‘E’ of the blade housing  112  and skin contacting surface ‘S’ while cutting surface ‘E’ of the blade housing  112  passes through skin contacting surface ‘S’. 
     The first horizontal recovering force F 4  refers to the force applied to the blade housing  112  in the horizontal direction by the recovering force generated by the first recovering member  132 . The second horizontal recovering force F 4  refers to the force applied to the blade housing  112  in the horizontal direction by the recovering force generated by the second recovering member  134 . 
     As shown in  FIG. 8A , when first pivot axis ‘A’ is in the first position, the normal force F 2  can act on the blade housing  112  more extensively at its left region than its right region with respect to second pivot axis ‘B’. 
     Accordingly, the resultant normal force applied to the left region of the blade housing  112  is greater than that applied to the right region of the blade housing  112 . 
     In addition, the horizontal frictional force F 3  may act in the second shaving direction opposite the moving direction of the blade housing  112  when shaving in the first shaving direction. 
     In addition, when shaving in the first shaving direction, the first recovering member  132  is extended and the second recovering member  134  is compressed, so that both first horizontal recovering force F 4  and second horizontal recovering force F 5  can act in the shaving direction. 
     Vertical pressing force F 1 , first horizontal recovering force F 4 , and second horizontal recovering force F 5  may have substantially codirectional line of force and moment arm with respect to first pivot axis A. 
     Accordingly, no moment is generated on the blade housing  112  by vertical pressing force F 1 , first horizontal recovering force F 4 , and second horizontal recovering force F 5 . 
     On the contrary, a moment may be generated on the blade housing  112  by normal force F 2  and horizontal frictional force F 3  that have noncoinciding directions of the line of the force and the moment arm with respect to first pivot axis ‘A’. 
     As a result, normal force F 2  acts on the blade housing  112  to a greater extent at its left region than its right region with respect to second pivot axis ‘B’ while horizontal frictional force F 3  acts on the second shaving direction, thereby generating a moment on the blade housing  112  in a first pivoting direction about first pivot axis ‘A’. 
     Here, the first pivoting direction means a pivoting direction in which the razor handle  140  is laid with respect to the blade housing  112 . For example,  FIG. 8A  illustrates the first pivoting direction that is clockwise. 
     As shown in  FIG. 8B , when the first pivot axis ‘A’ is in the second position, the normal force F 2  can act on the blade housing  112  more extensively at its right region than its left region with respect to second pivot axis ‘B’. 
     Accordingly, the resultant normal force applied to the right region of the blade housing  112  is greater than that applied to the left region of the blade housing  112 . 
     In addition, horizontal frictional force F 3  may act in a first shaving direction opposite the moving direction of the blade housing  112  when shaving in the second shaving direction. 
     In addition, when shaving in the second shaving direction, the first recovering member  132  is compressed and the second recovering member  134  is extended, for causing first horizontal recovering force F 4  and second horizontal recovering force F 5  to commonly act in the second shaving direction. 
     As described above in the description associated with  FIG. 8A , the moment acting on the blade housing  112  may be generated primarily by normal force F 2  and horizontal frictional force F 3 . 
     As a result, normal force F 2  acts on the blade housing  112  to a greater extent at its right region than its left region with respect to second pivot axis ‘B’ while horizontal frictional force F 3  acts on the first shaving direction, thereby generating a moment on the blade housing  112  in a second pivoting direction about first pivot axis ‘A’. 
     Here, the second pivoting direction means a pivoting direction in which the razor handle  140  is erected with respect to the blade housing  112 . For example,  FIG. 8B  illustrates the second pivoting direction that is counterclockwise. 
     Moment in the first pivoting direction or the second pivoting direction according to the movement of first pivot axis ‘A’ can provide a better handling to the user of the razor assembly, specifically, the two-way wet razor assembly. The detailed description in this regard will be given with reference to  FIGS. 9A and 9B . 
     In addition, such a moment in the first pivoting direction or the second pivoting direction, when shaving, may depress the respective skin contact members  117 ,  118  disposed on the blade housing  112 , thereby improving the guard function or the lubrication performance of the skin contact members  117 ,  118 . 
     For example, when the user is shaving in the first shaving direction, the first skin contact member  117  may depress skin contacting surface ‘S’ more firmly while the moment in the first pivoting direction is generated in the blade housing  112 . 
     This can further improve the function of the guard bar or the lubrication band included in the first skin contact member  117 . 
     Specifically, where the first skin contact member  117  includes a guard bar, the guard bar can perform better by depressing skin contacting surface ‘S’ more firmly. 
     Where the first skin contact member  117  includes a lubrication band instead, the lubrication band can perform improved lubrication application by depressing skin contacting surface ‘S’ more firmly. 
     These effects can be equally applied to the guard bar or lubrication band included in the second skin contact member  118  when the user shaves in the second shaving direction. 
       FIGS. 9A and 9B  illustrate pivoting of the blade housing  112  according to one embodiment of the present disclosure when shaving along a curved surface. 
     Specifically,  FIG. 9A  illustrates shaving along a curved surface in a first shaving direction, and  FIG. 9B  illustrates shaving along a curved surface in a second shaving direction. 
     As shown in  FIG. 9A , when shaving in the first shaving direction, the blade housing  112  meets with a resistance in the second shaving direction by the frictional force generated between cutting surface ‘E’ of the blade housing  112  and skin contacting surface ‘S’. 
     Accordingly, the movement of the blade housing  112  is slowed down, and the guided shaft member  128  is moved to the first position. 
     In this case, the blade housing  112  remains in contact with skin contacting surface ‘S’, which generates the moment in the first pivoting direction on the blade housing  112  as shown in  FIG. 8A . 
     Meanwhile, when shaving in the first shaving direction along the curved surface, the blade housing  112  is pivoted in the first pivoting direction. 
     Accordingly, the moment in the first pivoting direction generated in the blade housing  112  while first pivot axis ‘A’ is moved to the first position can maintain a constant contact between the blade housing  112  and skin contacting surface ‘S’, thereby providing a better handling to the user. 
     As shown in  FIG. 9B , when shaving in the first shaving direction, the blade housing  112  meets with a resistance in the second shaving direction by the frictional force generated between cutting surface ‘E’ of the blade housing  112  and skin contacting surface ‘S’. 
     This slows down the movement of the blade housing  112 , and the guided shaft member  128  is moved to the second position. 
     In this case, the blade housing  112  remains in contact with skin contacting surface ‘S’, which generates the moment in the second pivoting direction on the blade housing  112  as shown in  FIG. 8B . 
     Meanwhile, when shaving in the second shaving direction along the curved surface, the blade housing  112  is pivoted in the second pivoting direction. 
     Accordingly, the moment in the second pivoting direction generated in the blade housing  112  while first pivot axis ‘A’ is moved to the second position can maintain a constant contact between the blade housing  112  and skin contacting surface ‘S’, thereby providing a better handling to the user. 
     The razor assembly  10  according to one embodiment of the present disclosure may generate an appropriate moment in the blade housing  112  by naturally moving the position of first pivot axis ‘A’ along the shaving direction. This has the effect of providing a better handling to the user. This effect can be maximized in a two-way wet razor with two shaving directions. 
       FIGS. 10A to 10C  are views illustrating that the connector  120  is pivoted when first pivot axis ‘A’ is in a first rest position according to one embodiment of the present disclosure. 
     Specifically,  FIG. 10A  shows that the connector  120  is in the second rest position,  FIG. 10B  shows that the connector  120  is pivoted in the first pivoting direction, and  FIG. 10C  shows the connector  120  is pivoted in the second pivoting direction. 
     Here, the second rest position refers to a position of the connector  120  where it is not pivoted about first pivot axis ‘A’ with respect to the blade housing  112 . 
     As shown in  FIG. 10A , when the connector  120  is in the second rest position, the displacements generated in the first recovering member  132  and the second recovering member  134  may be the same. 
     Accordingly, the elastic force generated by the displacement on the first recovering member  132  and the second recovering member  134  may be equal in magnitude. In this case, the resultant recovering force applied to the connector  120  may be zero. However, the present disclosure is not limited thereto. 
     For example, when the connector  120  is in the second rest position, the first recovering member  132  and the second recovering member  134  may be in a state of generating no displacement. This generates no elastic force in the first recovering member  132  and the second recovering member  134 , leading to zero resultant recovering force of the recovering force provider  130 . 
     With zero recovering force applied to the connector  120 , the connector  120  may maintain the second rest position without pivoting or rotation. 
     As shown in  FIG. 10B , when the guided shaft member  128  is in the first rest position, and where the connector  120  is pivoted in the first pivoting direction, the first recovering member  132  causes a positive displacement to occur. 
     This generates an elastic force in the first recovering member  132  for urging the connector  120  to pivot in the second pivoting direction. 
     Accordingly, the first recovering member  132  may provide the connector  120  with a recovering force for restoring the same to the second rest position when the connector  120  pivots in the first pivoting direction about first pivot axis ‘A’ past the second rest position. 
     Conversely, while a negative displacement occurs in the second recovering member  134 , an elastic force or recovering force is also generated in the second recovering member  134  for urging the connector  120  to pivot in the second pivoting direction. 
     As shown in  FIG. 10C , when the guided shaft member  128  is in the first rest position, and where the connector  120  is pivoted in the second pivoting direction, the second recovering member  134  causes a positive displacement to occur. 
     This generates an elastic force in the second recovering member  134  for urging the connector  120  to pivot in the first pivoting direction. 
     Accordingly, the second recovering member  134  may provide the connector  120  with a recovering force for restoring the same to the second rest position when the connector  120  pivots in the second pivoting direction about first pivot axis ‘A’ past the second rest position. 
     Conversely, while a negative displacement occurs in the first recovering member  132 , an elastic force or recovering force is also generated in the first recovering member  132  for urging the connector  120  to pivot in the first pivoting direction. 
     Therefore, the recovering members  132  and  134  according to one embodiment of the present disclosure can provide a recovering force to the translation motion of first pivot axis ‘A’ moving along the guide rail  116 , and at the same time, provide a recovering force to the pivoting motion of first pivot axis ‘A’ as well. 
       FIGS. 10A to 10C  illustrate pivoting when the guided shaft member  128  is in the first rest position, but the present disclosure is not limited thereto. Thus, the description with regard to  FIGS. 10A to 10C  may equally apply to the guided shaft member  128  when in the first or second position. 
     In  FIGS. 10A to 10C , the first recovering member  132  may have one side connected to the blade housing  112  and the other side connected to the connector  120 . 
     In this case, at the first rest position, one side and the other side of the first recovering member  132  may be spaced apart from first pivot axis ‘A’ in the first shaving direction. When the connector  120  pivots in the first pivoting direction, the moment in the second pivoting direction is generated by the first recovering member  132  in the connector  120 . 
     In this moment, the moment arm is a straight line connecting first pivot axis ‘A’ with the other side of the first recovering member  132 , and the line of force is a straight line connecting one side of the first recovering member  132  with the other side thereof. 
     The magnitude of the moment increases as the angle between the moment arm and the line of force approaches the right angle. 
     Accordingly, the closer the right angle is formed between a straight line that connects first pivot axis ‘A’ with the other side of the first recovering member  132  and a straight line that connects one side of the first recovering member  132  with the other side thereof, the greater the magnitude of the recovering force for the pivoting in the first pivoting direction. 
     For this purpose, in the first rest position, the other side of the first recovering member  132  is preferably located above one side of the first recovering member  132  relative to cutting surface ‘E’ of the blade housing  112 . 
     The second recovering member  134  may have one side connected to the blade housing  112  and the other side connected to the connector  120 . 
     In this case, at the first rest position, one side and the other side of the second recovering member  134  may be spaced apart from first pivot axis ‘A’ in the second shaving direction. 
     For the purpose of increasing the magnitude of the recovering force generated by the second recovering member  134 , the other side of the second recovering member  134  is also preferably located above one side of the second recovering member  134  relative to cutting surface ‘E’ of the blade housing  112 . 
     In  FIGS. 10A to 10C , the connector  120  may include a stopper  1222 . Specifically, the connector  120  may include a first stopper  1222 A for the first pivoting direction and a second stopper  1222 B for the second pivoting direction. 
     The stopper  1222  serves to limit the pivot angle of the connector  120  to a certain angle range by contacting the blade housing  112  when the connector  120  pivots in the first or second pivoting direction. 
     As shown in  FIG. 10A , when the connector  120  is in the second rest position, the stopper  1222  does not contact the blade housing  112 , so that the connector  120  may pivot in the first pivoting direction or the second pivoting direction. 
     As shown in  FIG. 10B , when the connector  120  is pivoted by a predetermined angle or more in the first pivoting direction, the first stopper  1222 A may contact the blade housing  112 , whereby the connector  120  may no longer pivot in the first pivoting direction. 
     As shown in  FIG. 10C , when the connector  120  is pivoted by a predetermined angle or more in the second pivoting direction, the second stopper  1222 B may contact the blade housing  112 , whereby the connector  120  may no longer pivot in the second pivoting direction. 
     As shown in  FIGS. 10A to 10C , the stopper  1222  contacts the blade housing  112  to limit the pivot angle of the connector  120  about first pivot axis ‘A’ based on the second rest position to the range of 10 degrees to 30 degrees in the first pivoting direction and the second pivoting direction, respectively. 
     One-way wet razors are generally configured to pivot in an angular range of 30 degrees to 50 degrees for natural handling. However, with two-way wet razor, such a pivot range may excessively bend the user&#39;s wrist when switching the shaving direction. 
     The razor assembly  10  according to at least one embodiment of the present disclosure can minimize excessive bending of the user&#39;s wrist when switching the shaving direction by utilizing the stopper  1222  for limiting the pivot range of the connector  120  to the range between 10 degrees and 30 degrees. 
     Further, the razor assembly  10  may be configured so that, when the stopper  1222  is in contact with the blade housing  122 , at least a portion of the area of the connector  120  between the stopper  1222  and the guided shaft member  128  is spaced apart from the blade housing  112 . 
     This may reduce the contact area between the connector  120  and the blade housing  112  during shaving with the connector  120  pivoted. 
     As a result, the friction generated between the connector  120  and the blade housing  112  can be reduced to provide a better handling to the user. 
       FIGS. 11A to 11C  are diagrams of a recovering force provider according to various embodiments of the present disclosure. 
     In  FIG. 1  to  FIG. 10C , the first recovering member  132  and the second recovering member  134  are made of rubber, but the present disclosure is not limited thereto.  FIGS. 11A to 11C  illustrate embodiments that utilize non-rubber materials for making the first recovering member  132  and the second recovering member  134 . 
     As shown in  FIG. 11A , a first recovering member  2132  and a second recovering member  2134  included in a recovering force provider  2130  may be leaf springs. 
     In this case, one end of each leaf spring may be connected to a blade housing  2112 , the other end may be connected to a connector  2120 . 
     The first recovering member  2132  and the second recovering member  2134  formed of leaf springs generate an elastic force by bending or extending the leaf springs constituting each member, thereby providing recovering force to the connector  2120 . 
     As shown in  FIG. 11B , a first recovering member  3132  and a second recovering member  3134  included in a recovering force provider  3130  may be formed of a coil spring. 
     In this case, each coil spring may have one end connected to a blade housing  3112  and the other end connected to a connector  3120 . 
     The first recovering member  3132  and the second recovering member  3134  made of a coil spring may be configured to have an elastic force generated by the coil spring being extended or compressed, as with the rubber material, thereby providing the connector  3120  with a recovering force. 
     As shown in  FIG. 11C , a first recovering member  4132  includes a plurality of first magnetic elements  4135  and  4136 , and a second recovering member  4134  includes a plurality of second magnetic elements  4137  and  4138 . 
     In this case, the recovering force provided by the first recovering member  4132  to the connector  4120  may include a magnetic force generated by the plurality of first magnetic elements  4135  and  4136 . The recovering force provided by the second recovering member  4134  to the connector  4120  may include a magnetic force generated by the plurality of second magnetic elements  4137  and  4138 . 
     For example, as shown in  FIG. 11C , the magnetic elements  4135  and  4136  and the magnetic elements  4137  and  4138  disposed adjacent to each other may be arranged such that the same poles face each other. 
     In this case, a repulsive magnetic force may occur between the adjacent magnetic elements  4135  and  4136  and between the adjacent magnetic elements  4137  and  4138 , and thus, the razor assembly may be configured to provide a recovering force to the connector  4120 . 
     In this case, unlike the embodiments with an elastic material such as rubber, leaf spring, or coil spring used for the recovering members, the first recovering member  4132  may be located adjacent to the first position, and the second recovering member  4134  may be located adjacent to the second position. 
       FIGS. 11A to 11C  illustrate various embodiments of a recovering force provider, but the present disclosure is not limited thereto. Thus, the recovering force provider of the present disclosure may be according to other various embodiments as long as they provide a recovering force to the connector. 
     Further embodiments of the present disclosure shown in  FIGS. 12A to 12C , described below, differ from some embodiments of the present disclosure shown in  FIGS. 1-10C  in that at least a portion of a path of a guided shaft member moving along a guide rail includes a curved section. Hereinafter, descriptions will be made mainly on distinctive features according to further exemplary embodiments of the present disclosure, avoiding repeated descriptions of components substantially the same as those of the aforementioned embodiments. 
       FIGS. 12A to 12C  are views illustrating a movement of first pivot axis ‘A’ of a razor assembly  50  according to further embodiments of the present disclosure. 
     Specifically,  FIG. 12A  shows first pivot axis ‘A’ when located in the first rest position,  FIG. 12B  shows first pivot axis ‘A’ when located in the first position, and  FIG. 12C  shows first pivot axis ‘A’ when located in the second position. 
     As shown in  FIG. 12A , a guided shaft member  5128  moves along a guide rail  5116  takes a path which may have a curved section at least partially. 
     Specifically, the path of the guided shaft member  5128  moving from the first rest position to the first position along the guide rail  5116  may be a downward convex curved with respect to a cutting plane ‘E’ of a blade housing  5112  such that the downward convex is curved away from the cutting plane ‘E’. 
     In this case, the guided shaft member  5128  in the first position may be higher than the guided shaft member  5128  in the first rest position relative to cutting surface ‘E’ of the blade housing  5112  such that a first distance between the cutting surface ‘E’ and the guided shaft member  5128  in the first position is greater than a second distance between the cutting surface ‘E’ and the guided shaft member  5128  in the first rest position. 
     As shown in  FIG. 12B , when the guided shaft member  5128  moves to the first position along the guide rail  5116 , the connector  5120  may be pivoted in the second pivoting direction naturally thanks to the curved path between the first rest position and the first position. 
     As shown in  FIG. 12C , when the guided shaft member  5128  moves from the first position to the second position along the guide rail  5116 , it follows the curved path between the first rest position and the first position, and thereby the connector  5120  may be restored to the second rest position while naturally pivoting in the first pivoting direction. 
     With this structure, when switching the shaving direction from the first shaving direction to the second shaving direction, the shaving handle  5140  may be configured to naturally depress the blade housing  5112  in the second shaving direction. This effects smooth switching of the shaving direction in the two-way wet razors. 
       FIGS. 12A to 12C  illustrate the curve only at the path of the guided shaft member  5128  moving from the first rest position to the first position along the guide rail  5116 , but the present disclosure is not limited thereto. 
     For example, the path of the guided shaft member  5128  moving from the first rest position to the second position along the guide rail  5116  may also be curved. In this case, the path of the guided shaft member  5128  moving along the guide rail  5116  may have a generally “U” shape. 
     As described above, according to one embodiment of the present disclosure, the razor assembly has an effect of providing a safe shaving and proper handling to the user by appropriately moving the pivot axis according to the shaving direction or the degree of load applied to the blade housing. 
     Although exemplary embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the various characteristics of the disclosure. Therefore, exemplary embodiments of the present disclosure have been described for the sake of brevity and clarity. The scope of the technical idea of the present embodiments is not limited by the illustrations. Accordingly, one of ordinary skill would understand the scope of the disclosure is not limited by the above explicitly described embodiments but by the claims and equivalents thereof.