Razor cartridge

Abstract

Disclosed is a razor cartridge. According to one embodiment of the present disclosure, provided is a razor cartridge comprising: at least one razor blade having a cutting edge extending in the longitudinal direction; a housing for accommodating at least one razor blade in the longitudinal direction, the housing including a plurality of rivet pins formed to protrude from one surface of the housing behind the at least one razor blade with respect to the shaving direction; a trimming blade accommodated in a housing so as to be positioned behind at least one razor blade; and a trimmer cap including a plurality of through-holes each configured such that at least a portion of each of a plurality of rivet pins can be rivet-coupled therethrough, thereby fixing the trimming blade to the housing by rivet coupling.

Description

razor cartridge

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

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

[0003] When shaving beards and other areas, many razor cartridges containing multiple blades are provided as a means of reducing strokes.

[0004] However, in the case of a razor cartridge containing multiple razor blades, since the multiple razor blades are installed at a certain interval, the area of ​​the razor cartridge inevitably becomes larger, which has the problem of making it difficult to easily shave beards in curved areas such as the area under the nose.

[0005] Accordingly, the distribution of razor cartridges that provide a separate trimming blade with a cutting edge in the opposite direction to the cutting edges of multiple razor blades in the razor cartridge, thereby making it easier to shave beards in curved areas such as the sideburns or under the nose, is increasing.

[0006] However, a conventional razor cartridge including a trimming blade may have reduced durability because the trimming blade is not stably fixed to the razor cartridge, and the trimming blade may come off from the razor cartridge when an external impact such as a drop is applied to the razor cartridge.

[0007] In addition, if the razor cartridge includes a separate trimming cap for fixing the trimming blades, the clip for fixing multiple razor blades and the trimming cap may overlap each other or the clip may maintain a firm connection to the housing of the trimming cap, which may complicate the connection structure between the components of the razor cartridge and reduce the degree of freedom in design.

[0008] Accordingly, the present disclosure is intended to solve these problems, and its main purpose is to provide a razor cartridge capable of safely fixing a trimming blade without overlapping with other components through a relatively simple joint structure.

[0009] According to one embodiment of the present disclosure for achieving the above object, a razor cartridge is provided, comprising: at least one razor blade having a cutting edge extending in a longitudinal direction; a housing for receiving the at least one shaving blade in the longitudinal direction, the housing including a plurality of rivet pins protruding from one surface of the housing at a rearward side of the at least one shaving blade with respect to a shaving direction; a trimming blade received in the housing so as to be positioned at the rearward side of the at least one shaving blade; and a trimmer cap including a plurality of through holes each configured such that at least a portion of each of the plurality of rivet pins can pass through and be riveted, and fixing the trimming blade to the housing by the rivet connection.

[0010] As described above, according to this embodiment, there is an effect of safely fixing the trimming blade without overlapping with other components through a relatively simple joining structure.

[0011] FIG. 1 is a top view of a combined razor cartridge according to one embodiment of the present disclosure.

[0012] FIG. 2 is a combined bottom view of a razor cartridge according to one embodiment of the present disclosure.

[0013] FIG. 3 is an exploded perspective view of a razor cartridge according to one embodiment of the present disclosure.

[0014] FIG. 4 is a perspective view of a trimmer cap according to one embodiment of the present disclosure.

[0015] Fig. 5 is a cross-sectional view of the razor cartridge of Fig. 2 taken along the line A-A'.

[0016] Fig. 6 is a cross-sectional view of the razor cartridge of Fig. 2 taken along the B-B' direction.

[0017] Fig. 7 is a cross-sectional view of the razor cartridge of Fig. 2 taken along the C-C' direction.

[0018] FIG. 8 is an exploded perspective view of a razor cartridge according to another embodiment of the present disclosure.

[0019] Hereinafter, some embodiments of the present disclosure will be described in detail using exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components are given the same reference numerals, even if they appear in different drawings. Furthermore, when describing the present disclosure, detailed descriptions of related known components or functions will be omitted if they are deemed to obscure the gist of the present disclosure.

[0020] In describing components of embodiments according to the present disclosure, symbols such as first, second, i), ii), a), b) may be used. These symbols are only for distinguishing the components from other components, and the nature, order, or sequence of the components are not limited by the symbols. When a part in the specification is said to "include" or "have" a component, this does not mean that other components are excluded, but rather that other components may be included, unless explicitly stated otherwise.

[0021] FIG. 1 is a top view of a combined razor cartridge (10) according to one embodiment of the present disclosure.

[0022] FIG. 2 is a combined bottom view of a razor cartridge (10) according to one embodiment of the present disclosure.

[0023] FIG. 3 is an exploded perspective view of a razor cartridge (10) according to one embodiment of the present disclosure.

[0024] FIG. 4 is a perspective view of a trimmer cap according to one embodiment of the present disclosure.

[0025] Referring to FIGS. 1 to 4, a razor cartridge (10) according to one embodiment of the present disclosure includes all or part of at least one razor blade (100), a housing (200), a lubricating band (300), a comb (265), a plurality of clips (400), a trimming blade (500), and a trimmer cap (600).

[0026] At least one shaving blade (100) has a cutting edge extending in a longitudinal direction.

[0027] Here, the longitudinal direction refers to a direction parallel to the longitudinal direction of the razor cartridge (10). For example, it may refer to a direction parallel to the X-axis in FIGS. 1 to 4, but is not necessarily limited thereto.

[0028] The housing (200) accommodates at least one shaving blade (100) longitudinally and includes a plurality of rivet pins (250). The plurality of rivet pins (250) may be formed to protrude from one surface of the housing (200) at the rear of at least one shaving blade (100) with respect to the shaving direction.

[0029] Here, the shaving direction refers to the direction of movement of the razor cartridge (10) during shaving. For example, in FIGS. 1 to 4, the shaving direction may be the negative Y-axis direction. In addition, in the present specification, front and rear may be defined based on the shaving direction, and rear may be the positive Y-axis direction, and front may be the negative Y-axis direction. Here, the shaving direction may be a direction parallel to the lateral direction perpendicular to the longitudinal direction.

[0030] The housing (200) may include an upper surface (201), a bottom surface (202), a pair of longitudinal side walls (204), a rear wall (206), and a front wall (208).

[0031] The upper surface (201) is a surface toward which the cutting edge of at least one shaving blade (100) faces, and the lower surface (202) is a surface opposite to the upper surface (201) in the height direction and toward which the cutting edge of the trimming blade (500) to be described later faces. Here, the height direction refers to a direction parallel to the height of the razor cartridge (1). For example, the height direction refers to a direction parallel to the Z-axis in FIG. 3, and the height direction is perpendicular to the longitudinal and transverse directions.

[0032] A pair of longitudinal side walls (204) are longitudinally opposed walls, a rear wall (206) is a wall connecting a pair of longitudinal side walls (204) at the rear of at least one shaving blade (100), and a front wall (208) is a wall connecting a pair of longitudinal side walls (204) at the front of at least one shaving blade (100).

[0033] Meanwhile, one side of the housing (200) may be a surface from which a plurality of rivet pins (250) protrude on the rear side of the housing (200), and the position thereof may be determined according to the protrusion direction of the plurality of rivet pins (250).

[0034] For example, when a plurality of rivet pins (250) protrude downward from the lower surface (202) of the housing (200), one side of the housing (200) may be formed on the lower surface (202), and when a plurality of rivet pins (250) protrude rearward from the rear wall (206), one side of the housing (200) may be formed on the rear wall (206). In addition, when a plurality of rivet pins (250) protrude upward from the upper surface (201) of the housing (200), one side of the housing (200) may be formed on the upper surface (201).

[0035] A lubricating band (300) is positioned at the rear of at least one shaving blade (100) on the upper surface (201) of the housing (200) toward which the cutting edge of at least one shaving blade (100) faces. The lubricating band (300) may contain a lubricating substance, and thus may serve to protect the user's skin during shaving.

[0036] The comb (265) is arranged in front of at least one shaving blade (100) on the upper surface (201) of the housing (200) toward which the cutting edge of at least one shaving blade (100) faces.

[0037] However, the comb (265) does not necessarily have to be placed in front of at least one shaving blade (100). For example, if a bar member made of a hard material is provided at the rear of the rearmost blade among at least one shaving blade (100), the comb (260) can be formed on the bar member.

[0038] In this case, the comb (265) may be positioned between the rearmost shaving blade among at least one shaving blade (100) and the lubricating band (300) based on the transverse direction perpendicular to the longitudinal direction, for example, the direction parallel to the Y-axis in FIGS. 1 to 4. In addition, the comb (260) positioned at the rear of the rearmost blade may induce movement and discharge of foreign substances generated after shaving.

[0039] A plurality of clips (400) secure at least one longitudinal side of a shaving blade (100) to the housing (200). Each of the plurality of clips (400) may include a clip body (420), a first elongated portion (440), and a second elongated portion (460).

[0040] The clip body (420) is arranged on the upper surface (201) of the housing (200) and is configured to hold at least one shaving blade (100) in the housing (200). The clip body (420) can press at least one shaving blade (100) in a direction from the upper surface (201) toward the lower surface (202) on one longitudinal side of the at least one shaving blade (100).

[0041] The first extension portion (440) extends from the clip body (420) toward the lower surface (202), and the second extension portion (460) extends from one end of the first extension portion (440). Before the plurality of clips (400) are coupled to the housing (200), the extension directions of the first extension portion (440) and the second extension portion (460) may be the same, but when the plurality of clips (400) are coupled to the housing (200), the extension direction of the second extension portion (460) may be different from the extension direction of the first extension portion (440). Therefore, the positions of the plurality of clips (400) can be fixed.

[0042] For example, in a state where a plurality of clips (400) are coupled to the housing (200), the second extension portion (460) may extend from one end of the first extension portion (440) in a direction toward the center of the clip body (420) and may come into contact with the lower surface (202) of the housing (200). In this case, the extension direction of the first extension portion (440) may be approximately parallel to the height direction, and the extension direction of the second extension portion (460) may be approximately parallel to the horizontal direction and may be perpendicular to each other, but is not necessarily limited thereto.

[0043] Additionally, each of the plurality of clips (400) may include a plurality of first extension portions (440) and a plurality of second extension portions (460). In this case, the plurality of first extension portions (440) may extend from each of the two ends of the clip body (420), and each of the plurality of second extension portions (460) may extend from each end of the plurality of first extension portions (440).

[0044] The housing (200) may include a plurality of clip receiving portions (205) for receiving at least a portion of each of the plurality of clips (400). The plurality of clip receiving portions (205) may be formed to penetrate the upper surface (201) and the lower surface (202) of the housing (200) and may have an opening shape. More specifically, each of the plurality of clip receiving portions (205) may be configured such that a first extension portion (440) passes therethrough, and a second extension portion (460) extending from the first extension portion (440) may be bent on the lower surface side of the plurality of clip receiving portions (205).

[0045] Also, referring to FIG. 2, the plurality of clip receiving portions (205) may be arranged forward of the plurality of rivet pins (250). In this case, the plurality of clip receiving portions (205) may include two pairs of clip receiving portions (205) formed at the front and rear of at least one shaving blade (100) on both longitudinal sides of the housing (200), respectively. However, the present invention is not necessarily limited thereto, and the plurality of clip receiving portions (205) may include only one pair of clip receiving portions (205) formed at the rear of at least one shaving blade (100) on both longitudinal sides of the housing (200).

[0046] The trimming blade (500) is accommodated in the housing (200) so as to be positioned at the rear of at least one shaving blade (100). The trimming blade (500) illustrated in FIG. 3 is illustrated as a bent blade, but is not necessarily limited thereto. For example, the trimming blade (500) may be a welded blade in which a cutting edge is welded to a bent steel bar, or may be configured as a flat blade and placed in the housing (200) so that the cutting edge faces the lower surface (202) of the housing (200).

[0047] The trimmer cap (600) includes a plurality of through holes (650) configured so that at least a portion of each of the plurality of rivet pins (250) can penetrate therethrough and be riveted.

[0048] By placing the trimmer cap (600) on one surface of the housing (200) so that a plurality of rivet pins (250) pass through a plurality of through holes (650) of the trimmer cap (600), and riveting the ends of the rivet pins (250) to deform them, a rivet pin head is formed, and the trimmer cap (600) can be fixed to one surface of the housing (200). As a result, the trimmer cap (600) can fix the trimming blade (500) to the housing (200) by riveting the plurality of rivet pins (250). In addition, in the riveting, a method of irradiating the plurality of rivet pins (250) with an ultrasonic beam or applying pressure to the ends of each rivet pin (250) can be used.

[0049] Since the trimmer cap (600) can be connected to the housing (200) through a rivet connection, the position of the trimming blade (500) can be firmly fixed without including a complex connection structure inside the housing (200) for connecting the trimmer cap (600) and the housing (200).

[0050] Referring to FIG. 2, a plurality of rivet pins (250) may be formed spaced rearwardly from a plurality of clip receiving portions (205) in the transverse direction, and may also be formed spaced rearwardly from a plurality of clips (400) passing through the plurality of clip receiving portions (205) in the transverse direction. More specifically, a plurality of rivet pins (250) and a plurality of clips (400) may be spaced rearwardly while being arranged adjacent to each other.

[0051] Additionally, the coupling of the trimmer cap (600) to the housing (200) can be performed independently of the coupling of the plurality of clips (400) to the housing (200). Accordingly, even if the plurality of clips (400) coupled to the razor cartridge (10) are separated, the trimmer cap (600) can be firmly fixed on the housing (200).

[0052] That is, even if the first extension portion (440) and the second extension portion (460) of each of a pair of clips (400) are accommodated in the two pairs of clip receiving portions (205), the assembly area of ​​the shaving blade (100) and the assembly area of ​​the trimming blade (500) with respect to the housing (200) can be completely distinguished, thereby allowing the assembly order of the shaving blade (100) and the trimming blade (500) to be determined according to process convenience.

[0053] In addition, since the trimmer cap (600) and the plurality of clips (400) are separately installed in the housing (200), the trimmer cap (600) can be designed without including a separate opening or recess for accommodating or coupling at least a portion of each of the plurality of clips (400). This also applies when the plurality of clip receiving portions (205) include a pair of clip receiving portions (205) formed only at the rear of at least one shaving blade (100) on both longitudinal sides of the housing (200).

[0054] In addition, since a plurality of rivet pins (250) and a trimmer cap (600) are riveted together and spaced apart from each other in the rearward direction for a plurality of clips (400), the plurality of clips (400) and the area where trimming shaving is performed can be completely separated. That is, the clip body (420) can be placed in an area on the upper surface (201) where at least one shaving blade is placed, and the rear end of the clip body (420) can be spaced apart laterally from the trimming blade (500) and the trimmer cap (600). Accordingly, the degree of external exposure of the plurality of clips (400) can be minimized, and the holding force for at least one shaving blade (100) can be increased.

[0055] Additionally, in this case, the lubricating band (300) may be positioned rearwardly relative to the plurality of clips (400). Accordingly, the longitudinal length of the lubricating band (300) may be longer compared to a razor cartridge including a conventional trimming blade and trimmer cap.

[0056] Additionally, a comb (265) may be placed between the blade and the lubricating band (300) among at least one shaving blade (100). The description related to this may be the same as the description related to the comb (260) placed at the rear of the rearmost blade, and thus is omitted here.

[0057] Referring to FIG. 1, the longitudinal sides of the lubricating band (300) and the longitudinal side of each of the plurality of clips (400) moving away from the center of the lubricating band (300) may be aligned transversely or adjacent to each other transversely.

[0058] However, it is not necessary that the longitudinal sides of the lubricating band (300) be aligned transversely with one longitudinal side of each of the plurality of clips (400) moving away from the center of the lubricating band (300) or be adjacent to each other along the transverse direction, and may be arranged between the longitudinal sides of the plurality of clips (400).

[0059] Meanwhile, a plurality of rivet pins (250) may be spaced apart from each other in the longitudinal direction, and a trimming blade (500) may be placed between the plurality of rivet pins (250). Accordingly, a sufficient longitudinal length of the trimming blade (500) may be secured, so that the longitudinal length of the trimming blade (500) exposed from the housing (200) may be equal to or longer than the longitudinal length of at least one shaving blade (100) exposed from the housing (200). In addition, there is no need to configure a hole in the trimming blade (500) so that at least a portion of the trimmer cap (600) can penetrate therethrough to fix the position of the trimming blade (500), and thus a separate punching process is not required.

[0060] At least a portion of each of the plurality of clips (400) and at least a portion of each of the plurality of rivet pins (250) arranged adjacent thereto may be arranged to overlap each other in the transverse direction. For example, as illustrated in FIG. 2, each of the plurality of clips (400) and each of the plurality of rivet pins (250) may be aligned in the transverse direction.

[0061] The longitudinal reference center of each of the plurality of clips (400) and the center of each of the plurality of rivet pins (250) may be aligned laterally. However, this is not necessarily limited to the case, and one longitudinal side of each of the plurality of clips (400) moving away from the center of the lubricating band (300) may be laterally aligned with the center of each of the plurality of rivet pins (250). In this case, the longitudinal separation distance between the plurality of rivet pins (250) may be further increased.

[0062] Meanwhile, in order to guide each of the plurality of rivet pins (250) to pass through each of the plurality of through holes (650) before the trimmer cap (600) is coupled to the housing (200), the plurality of rivet pins (250) may be configured so that their cross-sectional areas become smaller as they go toward the protruding direction.

[0063] In FIGS. 2 and 3, a plurality of rivet pins (250) are illustrated as protruding from the lower surface (202) of the housing (200), but this is not necessarily limited thereto. For example, a plurality of rivet pins (250) may protrude from the rear wall (206) of the housing (200) or may protrude from the upper surface (201) of the housing (200).

[0064] The coupling direction of the trimmer cap (600) to the housing (200) can be determined depending on the protruding direction of the plurality of rivet pins (250). When the plurality of rivet pins (250) protrude from the lower surface (202) of the housing (200), the trimmer cap (600) can be coupled to the housing (200) in a direction from the lower surface (202) toward the upper surface (201). When the plurality of rivet pins (250) protrude from the rear wall (206) of the housing (200), the trimmer cap (600) can be coupled to the housing (200) in a direction from the rear toward the front. When the plurality of rivet pins (250) protrude from the upper surface (201) of the housing (200), the trimmer cap (600) can be coupled to the housing (200) in a direction from the upper surface (201) toward the lower surface (202).

[0065] When a plurality of rivet pins (250) protrude from the rear wall (206) of the housing (200) and the trimmer cap (600) is coupled to the housing (200) in a direction from the rear to the front, the trimming blade (500) may be configured as a flat blade, but is not necessarily limited thereto.

[0066] Meanwhile, in the following, one side of the trimmer cap (600) based on the coupling direction of the trimmer cap (600) is a side configured to be in contact with one side of the housing (200) and the trimming blade (500), and the other side of the trimmer cap (600) is described as the opposite side of the one side.

[0067] Fig. 5 is a cross-sectional view of the razor cartridge (10) of Fig. 2 taken along the A-A' direction.

[0068] Referring to FIGS. 3 and 5, the housing (200) may include a plurality of first housing area portions (222) and second housing area portions (224).

[0069] The plurality of first housing areas (222) are areas spaced apart from each other for forming a plurality of rivet pins (250), and the second housing area (224) is an area that accommodates a trimming blade (500) and is positioned between the plurality of first housing areas (222).

[0070] Here, the plurality of first housing areas (222) and the second housing areas (224) may be formed with a step from each other on one surface of the housing (200) so that the second housing areas (224) may be formed to protrude from the plurality of first housing areas (222) along the extension direction of the plurality of rivet pins (250). For example, one longitudinal end of the second housing areas (224) may protrude further in a direction parallel to the extension direction of the plurality of rivet pins (250) than one longitudinal end of the plurality of first housing areas (222). In addition, the peripheral surface adjacent to the plurality of rivet pins (250) on the plurality of first housing areas (222) may be formed to be at least partially recessed relative to one surface of the second housing areas (224) in which the trimming blade (500) is accommodated.

[0071] Accordingly, while securing the extension length of a plurality of rivet pins (250) required for rivet jointing, it is possible to prevent the rivet pin head formed after riveting from excessively protruding from one side of the housing (200) or from the other side of the second trimmer cap area portion (604) to be described later.

[0072] The ends of the plurality of rivet pins (250) formed by extension may protrude with respect to the second housing area portion (224). That is, the ends of the plurality of rivet pins (250) may protrude from an imaginary plane that includes one surface of the second housing area portion (224).

[0073] In addition, one surface of the housing (200) on which a plurality of rivet pins (250) are formed may be the lower surface (202) of the housing (200), and both the first housing area portion (222) and the second housing area portion (224) may be formed on the lower surface (202) of the housing (200). In this case, the trimmer cap (600) is positioned in front of the cutting edge of the trimming blade (500) based on the trimming shaving plane, and the rear wall (206) of the housing (200) is positioned in the rear of the cutting edge of the trimming blade (500), so that the trimming shaving plane may be defined by the wall between the rear wall (206) of the housing (200) and the other surface of the trimmer cap (600) or the other surface and one surface of the rear wall (206) of the housing (200) and the trimmer cap (600).

[0074] Meanwhile, when a plurality of rivet pins (250) protrude from the rear wall (206) of the housing (200) and the trimmer cap (600) is coupled to the housing (200) in a direction from the rear to the front, the first housing area portion (222) and the second housing area portion (224) can be formed on the rear wall (206) of the housing (200), and the trimming blade (500) can be arranged as a flat blade on the rear wall (206) of the housing (200).

[0075] Accordingly, based on the trimming shaving direction, the lower surface (202) of the housing (200) is positioned in front of the cutting edge of the trimming blade (500), and the trimmer cap (600) is positioned behind the cutting edge of the trimming blade (500), so the trimming shaving plane can be defined by the wall between the lower surface (202) of the housing (200) and the other surface of the trimmer cap (600) or the lower surface (202) of the housing (200) and the other surface and one surface of the trimmer cap (600).

[0076] Meanwhile, referring again to FIGS. 3 and 5, the trimmer cap (600) may include a plurality of first trimmer cap area portions (602) and second trimmer cap area portions (604).

[0077] The plurality of first trimmer cap areas (602) are areas spaced apart from each other for forming a plurality of through holes (650), and the second trimmer cap areas (604) are areas arranged between the plurality of first trimmer cap areas (602).

[0078] It may be preferable that the trimmer cap (600) have a shape corresponding to the plurality of first housing areas (222) and second housing areas (224). Accordingly, on one surface of the trimmer cap (600), the plurality of first trimmer cap areas (602) may be formed to protrude from the second trimmer cap areas (604) in a direction opposite to the extension direction of the plurality of rivet pins (250), so that the plurality of first trimmer cap areas (602) and the second trimmer cap areas (604) may be formed to be stepped from each other.

[0079] In addition, as illustrated in FIG. 6, the plurality of rivet pin heads that have completed riveting may not protrude from the trimmer cap (600) based on the extension direction, and preferably may not protrude from an imaginary plane that includes the most protruding area on the other surface of the second trimmer cap area portion (604), so that the rivet pin heads do not interfere with trimming shaving. Accordingly, on the other surface of the trimmer cap (600), the plurality of first trimmer cap area portions (602) and the second trimmer cap area portions (604) may be formed to be stepped from each other so that the second trimmer cap area portions (604) may be formed to protrude from the plurality of first trimmer cap area portions (602) along the extension direction of the plurality of rivet pins (250).

[0080] Fig. 6 is a cross-sectional view of the razor cartridge (10) of Fig. 2 taken along the B-B' direction, and illustrates a rivet pin head formed by riveting a plurality of rivet pins (250).

[0081] Referring to FIGS. 3 and 6, the housing (200) may further include a plurality of stoppers (223) that protrude from one surface adjacent to the boundary between the plurality of first housing areas (222) and the second housing areas (224) to prevent longitudinal displacement of the trimming blade (500).

[0082] For example, the plurality of stoppers (223) may include two pairs of stoppers (223) formed respectively at the front and rear of the second housing area portion (224) on both longitudinal sides of the trimming blade (500). However, the present invention is not necessarily limited thereto, and the plurality of stoppers (223) may include one pair of stoppers (223) formed only at the front or rear of the second housing area portion (224) on both longitudinal sides of the trimming blade (500).

[0083] Meanwhile, the rear wall (206) may include a plurality of contact preventing portions (207) that protrude further in a direction parallel to the protrusion direction of the plurality of rivet pins (250) in areas adjacent to both longitudinal sides of the trimming blade (500) compared to other areas.

[0084] The longitudinal ends of the trimming blade (500) can be prevented from directly contacting the skin by the multiple contact prevention parts (207).

[0085] Fig. 7 is a cross-sectional view of the razor cartridge (10) of Fig. 2 taken along the C-C' direction.

[0086] FIG. 8 is an exploded perspective view of a razor cartridge (20) according to another embodiment of the present disclosure.

[0087] Referring to FIGS. 3, 7 and 8, the housing (200) may further include a frame housing (220), a blade housing (260) and a guard frame (240).

[0088] As shown in FIG. 3, the frame housing (220), the blade housing (260), and the guard frame (240) may be formed as one piece, but as shown in FIG. 8, they may also be configured to be separable.

[0089] The frame housing (220) includes a receiving space (225) therein. The frame housing (220) may form an outer periphery of a razor cartridge (10) according to one embodiment of the present disclosure, and in this case, the pair of longitudinal side walls (204), the rear wall (206), and the front wall (208) of the housing (200) described above may be, but are not necessarily limited to, the pair of longitudinal side walls (204), the rear wall (206), and the front wall (208) of the frame housing (220).

[0090] The blade housing (260) is mounted within the receiving space (225) of the frame housing (220) so as to be capable of at least one of movement and rotation relative to the frame housing (220), and at least one shaving blade (100) can be mounted thereon. Here, the direction in which the blade housing (260) is mounted to the frame housing (220) may be a height direction, for example, a direction parallel to the Z-axis in FIGS. 3 and 7.

[0091] Meanwhile, so that the blade housing (260) can be mounted, moved, and / or rotated relative to the frame housing (220), the blade housing (260) may include a mounting protrusion (266) formed on at least one longitudinal side, and the frame housing (220) may include a first recess (226) and a second recess (228).

[0092] The first recess (226) may be formed on the upper portion of the longitudinal side wall (204) of the frame housing (220). At least a portion of the first recess (226) may be formed to be inclined. For example, at least a portion of the first recess (226) may have a chamfered shape. In this regard, the mounting protrusion (266) may also be formed to be inclined at least a portion.

[0093] By forming at least a portion of the first recess (226) to be inclined, when the blade housing (260) is mounted on the frame housing (220), the mounting protrusion (266) of the blade housing (260) can be smoothly mounted on the frame housing (220) via the inclined portion of the first recess (226).

[0094] The second recess (228) may be formed in the longitudinal side wall (204) spaced apart from the first recess (226) along the mounting direction, i.e., the direction in which the blade housing (260) is mounted on the frame housing (220). The second recess (228) is configured to receive the mounting protrusion (266) of the blade housing (260) and may be formed to be long and extend along the mounting direction. Accordingly, the blade housing (260) mounted on the frame housing (220) can move in the height direction along the shape of the second recess (228).

[0095] The second recess (228) may be formed in the center along the transverse direction of the longitudinal side wall (204). The blade housing (260) of the razor cartridge (10) according to one embodiment of the present disclosure is mounted on the frame housing (220) by having the mounting protrusion (266) inserted into one side of the second recess (228) through the first recess (226). Therefore, the initial position of the blade housing (260) with respect to the frame housing (220) may be determined depending on the position of one side of the second recess (228) and the position of the mounting protrusion (266).

[0096] Meanwhile, the rotation axis of the blade housing (260) parallel to the longitudinal direction can be defined by the second recess (228) and the mounting protrusion (266). When the second recess (228) and the mounting protrusion (266) are positioned close to the upper surface (201) of the housing (200) based on the height direction, the rotation axis of the blade housing (260) is formed adjacent to the user's skin during shaving, making it easy to achieve a close shave.

[0097] In addition, the blade housing (260) may be configured to be tiltable about a straight line parallel to the horizontal direction while mounted on the frame housing (220). That is, the blade housing (260) may be configured to be capable of all or part of movement, forward and backward rotation, and left and right rotation while mounted on the frame housing (220). Therefore, by the movement of the blade housing (260), the user's skin and the razor cartridge (10) are easily brought into close contact, enabling a close shave.

[0098] Regarding the structure in which the blade housing (260) according to one embodiment of the present disclosure is mounted on the frame housing (220), it has been described that the mounting protrusion (266) of the blade housing (260) is inserted into the second recess (228) through the first recess (226) of the frame housing (220), but the mounting structure is not necessarily limited thereto.

[0099] For example, a protrusion for mounting is formed on the longitudinal side wall (204), and one or more recesses are formed on at least one longitudinal side of the blade housing (260) so that the blade housing (260) is mounted on the frame housing (220), i.e., a structure in which the male and female structures are reversed may be formed.

[0100] Meanwhile, the blade housing (260) may be configured to include a comb (265). The comb (265) may be positioned in front of at least one shaving blade (100) on the upper surface (201) of the housing (200), but may also be positioned in the rear.

[0101] The guard frame (240) may be configured such that at least a portion thereof is disposed between the blade housing (260) and the frame housing (220), and at least another portion thereof is disposed in front of the blade housing (260). In addition, the guard frame (240) may be configured integrally with the blade housing (260).

[0102] The guard frame (240) may include a guard (242) and a tension support portion (245).

[0103] A guard (242) is positioned in front of at least one shaving blade (100) on the upper surface (201) of the housing (200) toward which the cutting edge of at least one shaving blade (100) faces. The guard (242) can stretch the skin before the hair is cut by the at least one shaving blade (100) during shaving.

[0104] The tension support member (245) is arranged at the bottom of the blade housing (260) and supports the blade housing (260) to provide a restoring force to return the blade housing (260) to its initial position when the blade housing (260) moves or rotates relative to the frame housing (220).

[0105] In this case, the tension support member (245) may include an elastic material, such as rubber or plastic.

[0106] To impart a restoring force to the blade housing (260) that has been moved and / or rotated from its initial position, the tension support member (245) may be positioned to contact at least a portion of one surface (e.g., the lower surface) of the blade housing (260) while the blade housing (260) is mounted to the frame housing (220).

[0107] The tension support member (245) may be arranged to cross the lower portion of the frame housing (220) in the transverse direction, and in this case, the tension support member (245) may be formed in a bridge shape. This allows the blade housing (260) to be supported more stably.

[0108] The above description is merely an example of the technical idea of ​​the present embodiment, and those skilled in the art to which the present embodiment pertains may make various modifications and variations without departing from the essential characteristics of the present embodiment. Therefore, the present embodiments are not intended to limit the technical idea of ​​the present embodiment, but to explain it, and the scope of the technical idea of ​​the present embodiment is not limited by these embodiments. The protection scope of the present embodiment should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of rights of the present embodiment.

[0109] [Description of symbols] 10, 20: razor cartridge, 100: at least one shaving blade, 200: housing, 201: upper surface, 202: lower surface, 204: a pair of longitudinal side walls, 205: a plurality of clip receiving portions, 206: rear wall, 207: a plurality of contact preventing portions, 208: front wall, 220: frame housing, 222: a plurality of first housing areas, 224: a second housing area, 223: a plurality of stoppers, 225: receiving space, 226: a first recess, 228: a second recess, 240: guard frame, 242: guard, 245: tension support portion, 250: a plurality of rivet pins, 260: blade housing, 265: comb, 266: mounting projection, 300: lubricating band, 400: a plurality of Clip, 420: clip body, 440: first extension, 460: second extension, 500: trimming blade, 600: trimmer cap, 602: multiple first trimmer cap areas, 604: second trimmer cap areas, 650: multiple through holes

[0110] [CROSS-REFERENCE TO RELATED APPLICATION]

[0111] This patent application claims priority to Korean Patent Application No. 10-2024-0092184, filed July 12, 2024, which is incorporated herein by reference in its entirety.

Claims

1. At least one razor blade having a cutting edge extending in a longitudinal direction; A housing that accommodates at least one shaving blade in the longitudinal direction, the housing including a plurality of rivet pins that protrude from one surface of the housing at the rear of the at least one shaving blade based on the shaving direction; a trimming blade accommodated in the housing so as to be positioned at the rear of the at least one shaving blade; and A trimmer cap including a plurality of through holes each configured so that at least a portion of each of the plurality of rivet pins can penetrate through and be riveted, and fixing the trimming blade to the housing by the rivet connection. A razor cartridge comprising:

2. In paragraph 1, The above plurality of rivet pins are spaced apart from each other in the longitudinal direction, A razor cartridge characterized in that the trimming blade is positioned between the plurality of spaced rivet pins.

3. In paragraph 1, Further comprising a plurality of clips for fixing longitudinal sides of at least one shaving blade to the housing, A razor cartridge characterized in that the plurality of rivet pins are arranged rearwardly with respect to the plurality of clips.

4. In paragraph 3, A razor cartridge characterized in that the coupling of the trimmer cap to the housing is performed independently of the coupling of the plurality of clips to the housing.

5. In paragraph 3, A razor cartridge, characterized in that at least a portion of each of the plurality of clips and at least a portion of each of the plurality of rivet pins are aligned in a lateral direction perpendicular to the longitudinal direction.

6. In paragraph 3, Further comprising a lubricating band disposed at the rear of the at least one shaving blade on the upper surface of the housing toward which the cutting edge of the at least one shaving blade faces, A razor cartridge characterized in that the lubricating band is arranged rearwardly relative to the plurality of clips.

7. In paragraph 6, A razor cartridge characterized in that the longitudinal sides of the lubricating band and the longitudinal side of each of the plurality of clips moving away from the center of the lubricating band are aligned in a transverse direction perpendicular to the longitudinal direction.

8. In paragraph 1, The above housing, A plurality of first housing area portions spaced apart from each other for forming the plurality of rivet pins; and A second housing area portion that accommodates the trimming blade and is positioned between the plurality of first housing area portions. Including, A razor cartridge characterized in that the plurality of first housing areas and the second housing area portions are formed with a step from each other so that the second housing area portion can be formed to protrude from the plurality of first housing areas along the extension direction of the plurality of rivet pins on one side of the housing.

9. In paragraph 8, A razor cartridge characterized in that the housing further includes a plurality of stoppers that protrude from one surface adjacent to the boundary between the plurality of first housing areas and the second housing areas to prevent the trimming blade from being dislodged in the longitudinal direction.

10. In paragraph 1, The above trimmer cap, A plurality of first trimmer cap area portions spaced apart from each other for forming each of the plurality of through holes; and A second trimmer cap area portion disposed between the plurality of first trimmer cap area portions Including, A razor cartridge characterized in that the plurality of first trimmer cap areas and the second trimmer cap areas are formed to be stepped from each other so that the plurality of first trimmer cap areas can be formed to protrude from the second trimmer cap areas in a direction opposite to the extension direction of the plurality of rivet pins on one side of the trimmer cap configured to be in contact with one side of the housing.

11. In paragraph 10, Each of the plurality of rivet pins forms a rivet pin head by the rivet connection, A razor cartridge characterized in that the rivet pin head is configured not to protrude from an imaginary plane including a maximum protruding area on the other surface of the second trimmer cap area.

12. In paragraph 1, The above trimmer cap, A plurality of first trimmer cap areas spaced apart from each other for forming each of the plurality of through holes; and A second trimmer cap area portion arranged between the plurality of first trimmer cap areas. Including, A razor cartridge characterized in that the plurality of first trimmer cap areas and the second trimmer cap areas are formed to be stepped from each other so that the second trimmer cap area portion can be formed to protrude from the plurality of first trimmer cap areas along the extension direction of the plurality of rivet pins on the other side of the trimmer cap, which is opposite to the one side of the trimmer cap configured to be in contact with one side of the housing.

13. In paragraph 1, A razor cartridge characterized in that, before the trimmer cap is coupled to the housing, the plurality of rivet pins are configured so that their cross-sectional areas become smaller as they go toward the protruding end.

14. In paragraph 1, The above housing, an upper surface facing the cutting edge of at least one shaving blade; and The bottom surface opposite to the upper surface in the height direction and toward which the cutting edge of the trimming blade faces Including, A razor cartridge characterized in that the trimmer cap is coupled to the housing in a direction parallel to the height direction.

15. In paragraph 1, A razor cartridge characterized in that the trimmer cap is coupled to the housing in a transverse direction perpendicular to the longitudinal direction.

Images