Razor Cartridge

Abstract

Initiate the razor cartridge. According to one embodiment of the present disclosure, a razor cartridge is provided comprising: at least one shaving blade having a cutting edge extending in the longitudinal direction; an upper surface where the cutting edge is exposed; a bottom surface opposite the upper surface; and a pair of side wall portions formed adjacent to both longitudinal side areas of the at least one shaving blade, wherein the pair of side wall portions extend from the bottom surface toward the upper surface, and at least a portion of the height is smaller than the height difference between the bottom surface and the upper surface.

Description

Technology Field

[0001] The present disclosure relates to a razor cartridge. More specifically, it relates to a razor cartridge comprising an opening portion. Background Technology

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

[0003] A conventional razor assembly, generally known as a wet razor, comprises a razor cartridge and a razor handle, and the razor cartridge comprises a blade housing that accommodates at least one razor blade.

[0004] Meanwhile, since razor cartridges are typically used multiple times, they require periodic cleaning. To clean a razor cartridge, methods commonly used include immersing the entire cartridge in water and shaking it to remove shaving residue, or washing the front or back of the cartridge under running water.

[0005] However, conventional razor cartridges have a problem in that it is difficult to properly discharge shaving residue present on the surface and inside the cartridge due to the narrow gap between the shaving blades and the complex cartridge structure.

[0006] In addition, when using a wet shaver, the frictional force generated between the blade housing and the skin, the cutting force applied to the hair to cut the hair, and irritation to the skin area with cuts can cause discomfort to the user.

[0007] To reduce such inconvenience, shaving aids such as shaving foam, shaving gel, and shaving cream have traditionally been used during shaving. These shaving aids contain lubricating ingredients and can be applied to the user's skin.

[0008] However, since wet razors are generally used with moisture, shaving aids applied to the user's skin can be washed away from the razor cartridge by the moisture during shaving. In this case, shaving aids that are not yet used or could be reused may also be washed away by the moisture. Consequently, there is a problem where the applied shaving aid fails to perform its function and is wasted, or where too much shaving aid is used in a single shave. The problem to be solved

[0009] Accordingly, the main purpose of the present disclosure is to solve these problems by providing a razor cartridge that has excellent washability, can reduce waste of shaving aids, and can provide softness during shaving for a long time. means of solving the problem

[0010] According to one embodiment of the present disclosure for achieving such an objective, a razor cartridge is provided comprising: at least one shaving blade having a cutting edge extending in a longitudinal direction; an upper surface where the cutting edge is exposed; a bottom surface opposite to the upper surface; and a pair of side wall portions formed adjacent to both longitudinal side areas of the at least one shaving blade, wherein the pair of side wall portions extend from the bottom surface toward the upper surface and at least a portion of their height is smaller than the height difference between the bottom surface and the upper surface.

[0011] Additionally, the present invention provides a razor cartridge characterized by comprising: at least one razor blade having a cutting edge extending in the longitudinal direction; an upper surface where the cutting edge is exposed; a bottom surface opposite to the upper surface; a pair of blade seating portions for receiving the at least one razor blade, wherein the pair of blade seating portions are positioned at both longitudinal ends of the at least one razor blade; a pair of fixing members, wherein at least a portion of which is spaced apart from the pair of blade seating portions in the height direction when the direction from the bottom surface toward the upper surface is defined as the height direction, and configured to fix the at least one razor blade at both longitudinal ends of the at least one razor blade; and a pair of cleaning holes formed between the pair of fixing members and the pair of blade seating portions in the height direction. Effects of the invention

[0012] As explained above, according to the present embodiment, it is possible to reduce waste of shaving aids while having excellent cleaning properties, and to provide softness for a long time during shaving. Brief explanation of the drawing

[0013] FIG. 1 is a front view of a razor cartridge according to a first embodiment of the present disclosure. FIG. 2 is a cross-sectional view of a razor cartridge according to a first embodiment of the present disclosure, cut along the V-V' direction of FIG. 1. FIG. 3 is a cross-sectional view of a razor cartridge according to the first embodiment of the present disclosure, cut along the VI-VI' direction of FIG. 1. FIG. 4 is a cross-sectional view of a razor cartridge according to the first embodiment of the present disclosure, cut along the direction VII-VII' of FIG. 1. FIG. 5 is a front view of a razor cartridge according to a second embodiment of the present disclosure. FIG. 6 is a side view of a razor cartridge according to a second embodiment of the present disclosure. FIG. 7 is a cross-sectional view of a razor cartridge according to a second embodiment of the present disclosure, cut along the direction VIII-VIII' of FIG. 5. FIG. 8 is a front view of a razor cartridge according to a third embodiment of the present disclosure. FIG. 9 is a front view of a razor cartridge according to a fourth embodiment of the present disclosure. Specific details for implementing the invention

[0014] Some embodiments of the present disclosure are described in detail below with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present disclosure, if it is determined that a detailed description of related known components or functions could obscure the essence of the present disclosure, such detailed description is omitted.

[0015] In describing the components of the embodiments according to the present disclosure, symbols such as first, second, i), ii), a), b), etc., may be used. These symbols are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the symbols. When a part in the specification is described as 'comprising' or 'having' a component, this means that, unless explicitly stated otherwise, it does not exclude other components but may include additional components.

[0016] FIG. 1 is a front view of a razor cartridge (10) according to a first embodiment of the present disclosure.

[0017] FIG. 2 is a cross-sectional view of a razor cartridge (10) according to the first embodiment of the present disclosure, cut along the V-V' direction of FIG. 1.

[0018] FIG. 3 is a cross-sectional view of a razor cartridge (10) according to the first embodiment of the present disclosure, cut along the VI-VI' direction of FIG. 1.

[0019] FIG. 4 is a cross-sectional view of a razor cartridge (10) according to the first embodiment of the present disclosure, cut in the direction of Ⅶ-Ⅶ' of FIG. 1.

[0020] Referring to FIGS. 1 to 4, a razor cartridge (10) according to a first embodiment of the present disclosure comprises a shaving blade (100), a guard portion (120), a cap portion (130), and an opening portion (140), all or part of which.

[0021] A razor blade (100) has a cutting edge extending in the longitudinal direction and may be composed of at least one, i.e., one or multiple blades. Here, the longitudinal direction refers to the width direction of the razor blade (100), and the transverse direction refers to a direction perpendicular to the longitudinal direction and parallel to the shaving direction. For example, in FIG. 1, the longitudinal direction is a direction parallel to the X-axis, and the transverse direction is a direction parallel to the Y-axis. Accordingly, a razor cartridge (10) may be configured such that one or multiple razor blades (100) are positioned in the longitudinal direction.

[0022] The cutting edge is configured to cut the user's body hair when shaving, and when the shaving blade (100) is composed of multiple blades, the cutting edge direction of each blade may be formed in the same direction, but is not necessarily limited thereto.

[0023] Meanwhile, in FIGS. 1 to 4, the shape of the cutting edge may be formed as a bent blade, but is not necessarily limited thereto, and it may also be formed as a flat blade or a welded blade. This is also the case in FIGS. 5 to 9 below.

[0024] Additionally, the razor cartridge (10) may include a blade accommodating unit (not shown) for accommodating a razor blade (100). The blade accommodating unit may be arranged in pairs on both longitudinal side end parts of the razor blade (100), but is not necessarily limited thereto.

[0025] Additionally, to prevent the razor blade (100) from coming off the razor cartridge (10), the razor cartridge (10) may include fixing clips (110) formed on both ends of the razor blade (100).

[0026] By fixing the razor blade (100) to both sides of the razor cartridge (10) with a fixing clip (110), the razor blade (100) may not detach from the razor cartridge (10) during shaving. However, the present disclosure is not limited thereto, and the razor blade (100) may be fixed to the razor cartridge (10) without the fixing clip (110) by, for example, by a frame covering a part of the upper surface of the razor cartridge (10).

[0027] The guard portion (120) is positioned in front of the cutting edge of the razor blade (100). Here, the front and rear of the razor blade (100) are defined based on the shaving direction of the razor cartridge (10). Thus, in FIG. 1, the front and rear of the razor blade (100) are, respectively, the negative Y-axis direction and the positive Y-axis direction relative to the razor blade (100). The guard portion (120) can stretch the skin before the body hair is cut by the razor blade (100) during the shaving process. Thus, the user's body hair can be raised in a direction perpendicular to the user's skin surface by the guard portion (120), and the cutting of the body hair by the razor blade (100) can be made easier.

[0028] The guard portion (120) may include a plurality of guard protrusions (125) formed on one surface of the guard portion (120). The plurality of guard protrusions (125) may protrude from one surface of the guard portion (120) in a direction perpendicular to the upper surface of the razor blade (100), but are not necessarily limited to such a direction.

[0029] The guard protrusions (125) may have the shape of a cylinder or a polygonal column, but are not necessarily limited thereto. For example, the plurality of guard protrusions (125) may have a shape that extends long in the transverse or longitudinal direction. In addition, some of the plurality of guard protrusions (125) may have the shape of a column, while others may have a shape that extends long along the longitudinal or transverse direction.

[0030] A plurality of guard protrusions (125) may be constructed using an elastic material, thereby providing a soft contact feeling and tension feeling to the user's skin. However, the material of the plurality of guard protrusions (125) is not necessarily limited to an elastic material and may be constructed using a material other than an elastic material.

[0031] The cap portion (130) is positioned behind the cutting edge of the razor blade (100). A lubrication band may be positioned on the cap portion (130), and since the lubrication band may contain a lubricating substance, it can serve to protect the user's skin during shaving. However, the lubrication band does not necessarily have to be positioned on the cap portion (130), and it is also possible to position it adjacent to the cap portion (130).

[0032] Meanwhile, the guard portion (120) and the cap portion (130) are not required to be positioned only at the front and rear of the cutting edge of the razor blade (100), respectively. For example, the guard portion (120) may be positioned at the front of the cutting edge of the razor blade (100) and at the same time at the rear of the cutting edge of the razor blade (100). Likewise, the cap portion (130) may also be positioned at the rear of the cutting edge of the razor blade (100) and at the same time at the front of the cutting edge of the razor blade (100).

[0033] In cases where a guard portion (120) and a cap portion (130) are positioned in front of the cutting edge of a razor blade (100) and where a guard portion (120) and a cap portion (130) are positioned behind the cutting edge of a razor blade (100), the order of the guard portion (120) and the cap portion (130) in each case can be easily changed according to the purpose and use.

[0034] The openings (140) are formed as a pair on both longitudinal side areas of the razor cartridge (10) so as to penetrate from the upper surface (200) to the bottom surface (220). Here, the upper surface (200) refers to the surface where the cutting edge of the razor blade (100) is exposed, and the bottom surface (220) refers to the surface located opposite the upper surface (200).

[0035] The opening (140) can be configured to allow rinsing water to pass through by penetrating the bottom surface (220) from the upper surface (200). Thus, by including the opening (140) in the razor cartridge (10), shaving residue and foreign matter present in the razor cartridge (10) can be smoothly discharged.

[0036] Referring to FIG. 1, the opening (140) may be formed in an area adjacent to both longitudinal ends of the razor blade (100). When the opening (140) is configured in this way, the shaving residue that exists between the surface of the razor cartridge (10) and the razor blade (100) can be discharged smoothly. That is, when the front or back of the cartridge is placed against flowing water for cleaning the cartridge, the water flows between the surface of the razor cartridge (10) and the razor blade (100) and naturally passes through the opening (140), thereby allowing the shaving residue to be discharged smoothly.

[0037] Referring to FIG. 2, the opening (140) may be formed with a varying width in part from the upper surface (200) to the bottom surface (220), while other parts may be formed with the same width, but are not necessarily limited thereto. For example, the opening (140) may be formed with the same width from the upper surface (200) to the bottom surface (220), or it may be formed with a continuously varying width from the upper surface (200) to the bottom surface (220).

[0038] To further enhance the cleaning effect of shaving residue present between the shaving blades (100), the opening (140) may be formed to be in fluid communication with both longitudinal ends of the blade seating portion. For example, the blade seating portion may be in fluid communication with the opening (140) by forming a pair of washing holes (600 in FIG. 6) on both longitudinal sides. In this case, the cleaning effect of shaving residue present between the shaving blades (100) can be further enhanced by tilting the shaving cartridge (10) at an angle to face the flowing water.

[0039] However, the location where the opening (140) is formed is not necessarily limited to the area adjacent to both longitudinal ends of the razor blade (100) as shown in FIG. 1. For example, the opening (140) may be formed at both longitudinal ends of the razor cartridge (10). That is, the opening (140) may be formed at a location moved in the negative X-axis or positive X-axis direction from the location of the opening (140) shown in FIG. 1.

[0040] Additionally, the opening (140) may be formed in an area adjacent to both longitudinal ends of the cap portion (130) or in an area adjacent to both longitudinal ends of the guard portion (120).

[0041] The number of openings (140) may be two or more. That is, the openings (140) may be formed as a pair in the area adjacent to both longitudinal ends of the razor blade (100), and at the same time may be formed as a pair in the area adjacent to both longitudinal ends of the cap portion (130), and may also be formed as a pair in the area adjacent to both longitudinal ends of the guard portion (120).

[0042] However, the present disclosure is not necessarily limited thereto. For example, the opening (140) may be formed as a pair extending from an area adjacent to both longitudinal ends of the razor blade (100) to both longitudinal ends of the guard portion (120) and / or cap portion (130).

[0043] When the opening (140) is configured as described above, the shaving residue and foreign substances that remain on the surface of the cap portion (130) and / or guard portion (120) after shaving can also be smoothly discharged.

[0044] Meanwhile, the razor cartridge (10) may include a rubber unit (not shown) formed on the outside of the opening (140). The rubber unit may be configured to be deformable along the surface of the body using an elastic material. Therefore, since the rubber unit is formed on the outside of the opening (140) and can be deformed along the surface of the body, it can provide an adhesion feeling and softness to the skin and pull the user's skin, even when the outside of the opening (140) comes into contact with the skin during shaving.

[0045] The rubber portion may be formed on the outer side of the opening (140) along the thickness direction of the razor cartridge (10). Here, the thickness direction may be a direction perpendicular from the bottom surface (220) to the top surface (200).

[0046] Additionally, the razor cartridge (10) may include a rubber support unit (not shown) configured to support the bottom of the rubber part by being positioned in a plane parallel to the bottom surface (220). For example, the rubber support unit may be formed integrally with the razor cartridge (10), and the rubber part may be formed by coating on the rubber support unit. In this case, the rubber part and the rubber support unit may be formed along the thickness direction of the razor cartridge (10).

[0047] The rubber support may be constructed using a plastic material, but is not necessarily limited thereto. Additionally, as long as the rubber does not detach from the razor cartridge (10), the razor cartridge (10) does not necessarily have to include a rubber support. That is, it is also possible for the rubber to be formed along the thickness direction from the bottom surface (220) to the top surface (200) without a rubber support.

[0048] The rubber portion may be formed to be connected to the guard portion (120). That is, the rubber portion may be formed integrally with the guard portion (120) by using the same material as the guard portion (120). In this case, since the rubber portion can also be manufactured integrally during the process of manufacturing the guard portion (120), manufacturing convenience can be increased. In addition, it is possible to prevent the rubber portion from detaching from the razor cartridge (10).

[0049] Meanwhile, the razor cartridge (10) may be mounted on a razor handle (not shown). The user may shave by gripping the razor handle and bringing the razor cartridge (10) into contact with the skin. In this case, the razor cartridge (10) may be pivotably connected to the razor handle, but is not necessarily limited thereto.

[0050] For example, the razor cartridge (10) may be mounted to the razor handle so as to be replaceable, and may be mounted to the razor handle using a fixed type connector or a rotary type connector. Additionally, one side of the razor cartridge (10) may be directly mounted to one side of the razor handle.

[0051] FIG. 5 is a front view of a razor cartridge (20) according to a second embodiment of the present disclosure.

[0052] FIG. 6 is a side view of a razor cartridge (20) according to a second embodiment of the present disclosure.

[0053] Referring to FIGS. 5 and 6, the razor cartridge (20) may include a pair of side wall portions (500) formed on at least a portion of both longitudinal ends. Here, an opening (140) may be formed between the two longitudinal ends of the razor blade (100) and the side wall portions (500). However, as shown in FIG. 5, if the razor cartridge (20) includes a fixing clip (110), the opening (140) may be formed between the fixing clip (110) and the side wall portions (500).

[0054] Meanwhile, the side wall portion (500) may be configured to extend from the bottom surface (220) toward the upper surface (200). Accordingly, the side wall portion (500) may be formed to have a certain height from the bottom surface (220), but the side wall portion (500) does not necessarily have to extend to have a certain height from the bottom surface (220). For example, referring to FIG. 6, the height of both ends of the side wall portion (500) may be configured to be greater than the height of the center with respect to the Y-axis direction.

[0055] Meanwhile, the height of at least a portion of the side wall (500) may be smaller than the height between the bottom surface (220) and the top surface (200). For example, the height of at least a portion of the side wall (500) may be formed to a height of 20% to 80% of the height between the bottom surface (220) and the top surface (200), and preferably to a height of 40% to 60%. In this case, a step difference with respect to the top surface (200) may be formed on both sides of the razor cartridge (20) with respect to the X-axis direction of FIG. 5.

[0056] Here, the area where the height of the side wall portion (500) is smaller than the height between the bottom surface (220) and the top surface (200) is preferably an area adjacent to both longitudinal ends of the razor blade (100) and / or the blade seating portion at the side wall portion (500), but it may also be the entire area of ​​both ends of the razor cartridge (20). Additionally, when cleaning holes (600) are formed on both longitudinal sides of the blade seating portion, it is preferable that at least a portion of the side wall portion (500) be formed at a lower position than the location where the blade seating portion is formed so as not to obstruct the cleaning holes (600).

[0057] In this case, the opening (140) can penetrate not only the upper surface (200) and the bottom surface (220) but also the longitudinal ends of the blade mounting portion and the longitudinal sides of the razor cartridge (20), so that the upper portions of the opening (140), the cleaning holes (600) formed on the longitudinal sides of the blade mounting portion, and the side walls (500) can be fluidly connected to each other.

[0058] Accordingly, for example, cleaning water introduced from a side wall portion on one side in the longitudinal direction of a razor cartridge (20) can be discharged together with shaving residue by passing through an opening on one side and a cleaning hole (600) on one side, passing between a plurality of shaving blades (100), passing through a cleaning hole (600) on the other side, an opening on the other side, and a side wall portion on the other side.

[0059] However, the height of at least part of the side wall (500) does not necessarily have to be smaller than the height between the bottom surface (220) and the top surface (200), and, for example, as in the razor cartridge (10) of FIG. 2, it is also possible for the side wall (500) to be formed to be the same height as the top surface or top surface (200) of the razor cartridge (20) from the bottom surface (220).

[0060] FIG. 7 is a cross-sectional view of a razor cartridge (20) according to a second embodiment of the present disclosure, cut in the direction of Ⅷ-Ⅷ' of FIG. 5.

[0061] FIG. 7(a) shows a case where the opening (140) is formed to penetrate the upper surface (200) and the bottom surface, as shown in FIG. 5 and FIG. 6.

[0062] In this case, the washing water can be discharged to the upper and lower surfaces by penetrating between the upper surface (200) and the bottom surface (220), as well as to the one side and the other side by penetrating between the longitudinal sides of the razor cartridge (20). Thus, the shaving residue inside the razor cartridge (20) can be washed away more effectively.

[0063] However, the razor cartridge (20) does not necessarily have to be configured as shown in (a) of FIG. 7. For example, as shown in (b) and (c) of FIG. 7, the razor cartridge (20) may be configured such that the opening (140) does not penetrate the upper surface (200) and the bottom surface (220), and the two sides of the razor cartridge (20) are opened by the space between the upper surface (200) and the upper surface of the stepped side wall (500) with respect to the X-axis direction. In this case as well, since the upper part of the side wall (500) and the cleaning holes (600) formed on both longitudinal sides of the blade seating portion are fluidly connected, the cleaning water can penetrate between one side and the other side of the razor cartridge (20) and be discharged to the one side and the other side.

[0064] In the foregoing, regarding the razor cartridge (20) according to the second embodiment of the present disclosure, other components other than the side wall portion (500) may be identical to the razor cartridge (10) according to the first embodiment of the present disclosure, except for the specifically described matters, so a description thereof is omitted.

[0065] FIG. 8 is a front view of a razor cartridge (30) according to a third embodiment of the present disclosure.

[0066] Referring to FIG. 8, the razor cartridge (30) may have an elastic coating portion (800) formed on at least one part of the periphery and inner surface of the opening (140).

[0067] The elastic coating portion (800) may be made using an elastic material, such as rubber, but is not necessarily limited to rubber. The elastic coating portion (800) can stretch the skin around the area where shaving is performed during shaving. For example, the user may perform shaving in a curve rather than a straight line, and in this case, the user's body hair may stand up in a direction perpendicular to the skin surface by the elastic coating portion (800), and thus the cutting of the body hair by the shaving blade (100) can be made easier.

[0068] Although only the elastic coating portion (800) is shown in FIG. 8, the razor cartridge (30) may further include a rubber portion on the outside of the opening (140) even when the elastic coating portion (800) is formed.

[0069] In the above, regarding the razor cartridge (30) according to the third embodiment of the present disclosure, other components excluding the elastic coating portion (800) may be the same as those of the razor cartridges (10, 20) according to the first and second embodiments of the present disclosure, so the description of other components is omitted.

[0070] FIG. 9 is a front view of a razor cartridge (40) according to a fourth embodiment of the present disclosure.

[0071] Referring to FIG. 9, the shaving blade (100) of the razor cartridge (40) may include at least one first shaving blade (910) having a cutting edge and at least one second shaving blade (920) having a cutting edge.

[0072] In this case, the first razor blade (910) and the second razor blade (920) may each be composed of one or multiple blades. When the first razor blade (910) and the second razor blade (920) are composed of multiple blades, the spacing between the multiple first razor blades (910) and the spacing between the multiple second razor blades (920) may be configured to be the same, but are not necessarily limited thereto.

[0073] Meanwhile, the cutting edge direction of the first razor blade (910) and the cutting edge direction of the second razor blade (920) may be formed in the same direction. However, the present disclosure is not necessarily limited thereto, and the respective cutting edge directions may be formed in opposite directions so that shaving can be performed regardless of the gripping direction or shaving direction of the razor.

[0074] Additionally, the razor cartridge (40) may further include a lubrication member (900). The lubrication member (900) is configured to be positioned between the first razor blade (910) and the second razor blade (920). Additionally, the lubrication member (900) is configured to apply a lubricating material to the user's skin in order to assist in shaving and provide smoothness to the user. Accordingly, the lubrication member (900) may be in a solid form containing a lubricating material and may be composed using a surfactant, such as soap.

[0075] It is preferable that the longitudinal length of the lubricating member (900) be configured to be equal to or greater than the transverse length of the first shaving blade (910) and the second shaving blade (920), so that the lubricating member (900) can be applied in all transverse sections where hair cutting by the shaving blades takes place. However, the present disclosure is not necessarily limited thereto.

[0076] Referring to FIG. 9, the opening (140) may be formed in an area adjacent to both longitudinal ends of the lubricating member (900), but is not necessarily limited thereto as long as the cleaning water can pass through the razor cartridge (40).

[0077] Meanwhile, a structure (950) may be formed on one or more of the periphery and inner surface of the opening (140). The structure (950) may be formed using a protrusion unit (952), a protuberance unit, a recess (954), a concave unit, or a combination of two or more of these.

[0078] When an elastic coating portion (800) is formed on at least one part of the periphery and inner surface of the opening (140), a structure (950) may be formed on the elastic coating portion (800) and likewise may be constructed using a protrusion (952), a projection, a recess (954), a concave portion, or a combination of two or more of these. The structure (950) may be constructed using the same material as the elastic coating portion (800), such as rubber, so that it can provide a sense of closeness and softness to the skin even when the elastic coating portion (800) and the structure (950) come into contact with the skin during shaving. Additionally, the structure (950) may be constructed integrally with the elastic coating portion (800), but is not necessarily limited thereto.

[0079] The recess (954) and the concave portion can hold bubbles generated by a shaving aid, such as shaving foam, shaving gel, shaving cream, etc., when shaving, so that bubbles generated by the shaving aid can be maintained for a long time within the opening (140).

[0080] The protrusions (952) and projections serve to attract the foam generated by the shaving aid toward the opening (140). That is, the protrusions (952) and projections prevent the foam generated by the shaving aid from escaping the razor cartridge (40), and allow the recesses (954) and concave parts to continuously retain the foam. Additionally, the protrusions (952) and projections cause friction with the skin, thereby generating more abundant foam from the shaving aid and lubricant. If the protrusions (952) and projections are composed of multiple parts, foam from the shaving aid and lubricant may be retained between each protrusion (952) and projection.

[0081] The razor cartridge (40) includes a structure (950) as described above, thereby providing the user with continuous softness for a long time during shaving.

[0082] Meanwhile, the structure (950) may be formed as one or more, and may be constructed using an elastic material, but is not necessarily limited to an elastic material. When the structure (950) is formed as more than one, each structure (950) does not necessarily have to have the same shape.

[0083] For example, the protrusions (952) and projections may have the shape of a cylinder or a polygonal prism, and when the structure (950) is constructed using a plurality of protrusions (952), some of the protrusions (952) may have the shape of a cylinder and others may have the shape of a polygonal prism. Even among the structures (950) having the shape of a cylinder, the size of each cylinder may differ from one another, and even among the structures (950) having the shape of a polygonal prism, the size of each polygonal prism may differ from one another. The shape of the protrusions (952) and projections is also not necessarily limited to a cylinder or a polygonal prism.

[0084] Likewise, the recesses (954) and the concave portions may also have various shapes, and when the structure (950) is constructed using multiple recesses (954), the recessed shape of each recess (954) may differ from one another, and the recessed depth may also differ from one another.

[0085] Additionally, the structure (950) may be formed not only in the razor cartridge (40) according to the fourth embodiment of the present disclosure, but also in one or more of the peripheral and inner parts of the opening (140) of the razor cartridges (10, 20, 30) according to the first to third embodiments of the present disclosure.

[0086] Meanwhile, although only the elastic coating portion (800) is shown in FIG. 9, the razor cartridge (40) may also include a rubber portion formed on the outside of the opening (140) even when the elastic coating portion (800) is formed.

[0087] The razor cartridge (40) includes a lubricating member (900), thereby providing smoothness during shaving without the need for a separate shaving aid. Meanwhile, the razor cartridge (40) has the lubricating member (900) positioned between a plurality of shaving blades (100), allowing the lubricating substance to be continuously applied to the user's skin during the shaving process, and thus the user can continuously obtain a smooth sensation during shaving. Additionally, since the lubricating member (900) is positioned relatively in the center of the razor cartridge (40), the application of the lubricating substance can be easily achieved even when shaving curved body parts, such as the armpits, chin, and neck.

[0088] In the foregoing, regarding the razor cartridge (40) according to the fourth embodiment of the present disclosure, other components excluding the first and second razor blades (910, 920), the lubricating member (900), and the structure (950) may be identical to the razor cartridges (10, 20, 30) according to the first to third embodiments of the present disclosure, so the description of other components excluding these is omitted.

[0089] As described above, the razor cartridge (10, 20, 30, 40) according to one embodiment of the present disclosure has excellent washability, can reduce waste of shaving aids, and can provide softness for a long time during shaving.

[0090] The above description is merely an illustrative explanation of the technical concept of the present embodiment, and a person skilled in the art to which the present embodiment belongs would be able to make various modifications and variations within the scope of the essential characteristics of the present embodiment. Accordingly, the present embodiments are intended to explain, not limit, the technical concept of the present embodiment, and the scope of the technical concept of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present embodiment. Explanation of the symbols

[0091] 10, 20, 30, 40: Razor cartridges 100: Razor blades 110: Fixing clip 120: Guard part 125: Guard protrusion 130: Cap part 140: Opening 200: Upper surface 220: Floor surface 500: Sidewall 600: Cleaning hole 800: Elastic coating part 900: Lubricating member 910: First shaving blade 920: Second razor blade 950: Structure 952: Protrusion 954: Recess

Claims

Claim 1 A razor cartridge comprising: at least one shaving blade having a cutting edge extending in a longitudinal direction; an upper surface where the cutting edge is exposed; a bottom surface opposite to the upper surface; a pair of opening portions formed in the longitudinal side areas to penetrate from the upper surface to the bottom surface; a pair of washing holes formed on the longitudinal sides of the at least one shaving blade; and a pair of side wall portions formed adjacent to the longitudinal sides of the at least one shaving blade, wherein each of the pair of opening portions is formed between each of the longitudinal side ends of the at least one shaving blade and each of the pair of side wall portions, such that one longitudinal side is in fluid communication with each of the pair of washing holes and the other longitudinal side is in contact with each of the pair of side wall portions. Claim 2 delete Claim 3 delete Claim 4 A razor cartridge according to claim 1, characterized in that each of the pair of openings and each of the pair of cleaning holes are fluidly connected to each other. Claim 5 A razor cartridge according to claim 1, characterized in that the pair of openings are formed in an area adjacent to both longitudinal ends of the at least one razor blade. Claim 6 A razor cartridge according to claim 1, characterized in that the pair of openings are formed at both longitudinal ends of the razor cartridge. Claim 7 A razor cartridge according to claim 1, further comprising a rubber unit formed on the outside of the pair of openings. Claim 8 A razor cartridge according to claim 7, further comprising a guard portion disposed in front of the cutting edge, wherein the rubber portion is formed to be connected to the guard portion. Claim 9 A razor cartridge according to claim 1, wherein the pair of side walls extend from the bottom surface toward the top surface, and at least a portion of their height is smaller than the height difference between the bottom surface and the top surface. Claim 10 A razor cartridge according to claim 1, characterized in that when the pair of side walls are viewed in the longitudinal direction, the pair of side walls are configured so as not to obstruct the pair of cleaning holes. Claim 11 A razor cartridge according to claim 1, further comprising: a pair of fixing members configured to fix the at least one razor blade at both longitudinal ends of the at least one razor blade; and a pair of blade accommodating units for receiving the at least one razor blade, wherein each of the pair of cleaning holes is disposed between each of the pair of fixing members and each of the pair of blade accommodating units. Claim 12 A razor cartridge according to claim 1, wherein, when the direction from the upper surface toward the bottom surface is defined as the thickness direction, the thickness direction width of the pair of openings is greater than the thickness direction width of the pair of cleaning holes.

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