US-12623364-B2 - Handle assembly and cartridge, and razor including same

US12623364B2US 12623364 B2US12623364 B2US 12623364B2US-12623364-B2

Abstract

A cartridge may include at least one blade, and a frame supporting the at least one blade to expose the at least one blade at a front and configured to receive the at least one blade in a longitudinal direction. The cartridge may also include a first guard member disposed in front of the at least one blade and configured to align hair entering the at least one blade, and a second guard member disposed in front of the first guard member. The cartridge may further include an opening formed between the first and second guard members and configured to penetrate the frame in a direction from the front to a rear. A width of the opening in a lateral direction perpendicular to the longitudinal direction may be greater than a half of a width in a lateral direction defined by all of the at least one blade.

Inventors

Sung Hee SON
Jae Joon Lee

Assignees

DORCO CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20240716
Priority Date: 20151120

Claims (11)

1 . A cartridge configured to be coupled to a handle assembly and rotatable with respect to the handle assembly, the cartridge comprising: one or more blades; a frame configured to support and expose the one or more blades at an upper portion of the frame and, the frame configured to receive the one or more blades in a longitudinal direction; a first guard member positioned on the upper portion of the frame, the first guard member positioned in front of the one or more blades and spaced apart from all of the one or more blades; a second guard member positioned in front of the first guard member; a first opening positioned between the first guard member and the second guard member on the upper portion of the frame and extending through the frame from the upper portion of the frame to a lower portion of the frame; and a protrusion formed at the lower portion of the frame, and wherein: the one or more blades, a second opening, the first guard member, the first opening, and the second guard member are positioned sequentially as listed on the upper portion of the frame in a lateral direction perpendicular to the longitudinal direction, a width of the first opening, exposed when viewed from the upper portion of the frame, in the lateral direction is greater than a width of the first guard member in the lateral direction, the width of the first opening in the lateral direction is greater than a width of the second opening in the lateral direction, the first guard member and the second guard member are both exposed at the upper portion of the frame and directly contact at least one of skin or hair during shaving, the second guard member is immovably fixed to the frame, a width of the first guard member in the longitudinal direction is greater than a width of the first opening in the longitudinal direction, and at least a portion of the protrusion is disposed to overlap in the lateral direction with at least a portion of the first opening when viewed from the upper portion of the frame.
2 . The cartridge of claim 1 , wherein the cartridge further comprises: a top cap disposed behind the one or more blades, and wherein the width of the first opening in the lateral direction is greater than a width of the top cap in the lateral direction.
3 . The cartridge of claim 2 , wherein the one or more blades comprise at least five blades disposed between the top cap and the first guard member.
4 . The cartridge of claim 2 , wherein all of the one or more blades are disposed between the top cap and the first guard member.
5 . The cartridge of claim 1 , wherein the cartridge further comprises: the second opening positioned between a foremost blade of the one or more blades and the first guard member.
6 . The cartridge of claim 1 , wherein a pivot axis overlaps the first opening when viewed from the upper portion of the frame.
7 . The cartridge of claim 1 , wherein a portion of the protrusion overlapping at least the portion of the first opening in the lateral direction is spaced apart from a front end of the first opening in a direction from the upper portion to the lower portion of the frame.
8 . The cartridge of claim 1 , wherein a bottom surface of the protrusion is configured to contact with a portion of the handle assembly.
9 . The cartridge of claim 1 , wherein a protruding end of the protrusion is the lowest point on the lower portion of the frame.
10 . The cartridge of claim 1 , wherein a top surface of the protrusion extending from the lower portion of the frame is flat, wherein a bottom surface of the protrusion is angled relative to the top surface, and wherein the bottom surface is curved.
11 . The cartridge of claim 1 , wherein the first opening is configured to enable skin to protrude and enable at least a portion of hair to stand upright.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a continuation of U.S. patent application Ser. No. 18/057,686, filed Nov. 21, 2022, which is a continuation of U.S. patent application Ser. No. 15/983,677, filed May 18, 2018, now U.S. Pat. No. 11,504,865 issued Nov. 22, 2022, which is a continuation of international application PCT/KR2015/012521, filed Nov. 20, 2015, which claims priority to Korean Patent Application No. 10-2015-0162937 filed on Nov. 20, 2015 in the Korean Intellectual Property Office, the entire content of each of which is hereby incorporated by reference. FIELD The present disclosure relates to a handle assembly, a cartridge, and a razor including the handle assembly and the cartridge, and more particularly, a handle assembly to which a cartridge is coupled to be replaceable, the cartridge, and a razor including the handle assembly and the cartridge. BACKGROUND U.S. Pat. No. 5,787,586 discloses a razor 10 including a replaceable cartridge 14 and a handle 12 attachable to, or detachable from, the cartridge 14. As disclosed in U.S. Pat. No. 5,787,586, the conventional razor handle 12 has a structure in which a plunger 44, which elastically supports the cartridge 14, protrudes. PATENT LITERATURE (Patent Literature 1) U.S. Pat. No. 5,787,586 Since the conventional razor handle 12 has a structure in which the plunger 44 protrudes, the plunger 44 may often be damaged or broken by external impact or the like. If the plunger 44 is damaged, it may not be able to properly support the cartridge 14, and thus, the razor may no longer be usable. To address the aforementioned problems, exemplary embodiments of the present disclosure provide a handle that is less likely to be damaged by external impact, a cartridge, and a razor including the handle and the cartridge. However, objects of the present disclosure are not restricted to the one set forth herein. The above and other objects of the present disclosure will become more apparent to one of ordinary skill in the art to which the present disclosure pertains by referencing the detailed description of the present disclosure given below. SUMMARY A handle assembly according to an exemplary embodiment of the present disclosure comprises: a grip part gripped by a user; and a connecting part fixing the cartridge, wherein the connecting part comprises: a first plunger guard formed to protrude from the front end of the grip part; a second plunger guard formed to protrude from the front end of the grip part to be spaced apart from the first plunger guard; and a plunger slidably coupled between the first plunger guard and second plunger guard. The plunger may slide between a first position at which a front end of the plunger is aligned with the front ends of the first plunger guard and second plunger guard and the second position at which the front end of the plunger is located at a rear of the front ends of the first plunger guard and second plunger guard. The connecting part may further comprise an elastic member elastically supporting the plunger, and the plunger may be slid to the second position by an external force, and may return to the first position by the elastic force of the elastic member when an external force is removed. A housing, which receives the connecting part so that the first plunger guard, the second plunger guard, and the front end of the plunger can be exposed, may be provided at the front end of the grip part, and the connecting part may further comprise an eject button slidably installed at a top of the housing and a pusher operating in synchronization with the eject button and releasing a coupling of the cartridge and the connecting part. A front end of the pusher may be located below at least one of the plunger, the first plunger guard, and the second plunger guard. The connecting part may further comprise an elastic member supported at one end by the plunger and supported at the other end by the pusher, and the elastic member may provide a first return force for moving forward the plunger moved backward by an external force and a second return force for moving backward the pusher moved forward by the external force and the eject button. A cartridge according to an exemplary embodiment of the present disclosure comprises: at least one blade; a frame supporting the at least one blade so that the at least one blade can be exposed at the front; a plunger pressing protrusion formed to protrude from the frame toward a rear, formed to be outwardly convex, and including a bottom surface that is placed in contact with a plunger of a handle assembly; and a connector installed to be rotatable with respect to the frame and coupled to the handle assembly to be attachable to, or detachable from, the handle assembly. The plunger pressing protrusion may have a vertically asymmetrical tapered shape. The connector may comprise a receiving hole, which receives one end of the handle assembly, and a latch, which is formed to protrude in