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KR-20260063540-A - 2-STAGE PROTRUDING MARKER PEN

KR20260063540AKR 20260063540 AKR20260063540 AKR 20260063540AKR-20260063540-A

Abstract

The present invention relates to a two-stage protruding marker pen that adds an inner barrel to the interior of a case, while maintaining the inner and outer shapes of the sealing portion of the inner barrel in a cylindrical shape to enable sealing, allows the outer shape of the case to be free, and enables a natural design when the pen is stored and when it is protruded through a two-stage protruding structure. A hollow case (10) formed in a square shape with a hole (15) formed at the tip; an inner barrel (20) located inside the tip of the case (10), comprising a barrel body (21) having longitudinal guide grooves (22) formed on the upper and lower sides and a stopper (24) provided in the middle, a barrel stopper (23) connected to the tip of the barrel body (21) with a nip hole (23') formed therein, and a return spring (25) provided on the outer side of the barrel body (21) to return the barrel body (21); and a ball shutter assembly (40) formed by combining a ball shutter (41) that moves a marker pen back and forth, a link (42), and a holder (43), and housed inside the inner barrel (20). The device is characterized by comprising: an operating assembly (60) having a nip (100) received at the front end and an operating gear (64) that rotates the ball shutter assembly (40) and a main spring (65); a gear guide (50) coupled to the rear end of the case (10) and having an internal gear (55) to guide the movement of the operating assembly (60); and a knob (30) coupled to the rear end of the operating assembly (60) and movably provided inside the gear guide (50) to move the operating assembly (60) back and forth.

Inventors

  • 김진남
  • 오승곤
  • 강정훈
  • 문윤호
  • 차구익

Assignees

  • 주식회사 모리스

Dates

Publication Date
20260507
Application Date
20241030

Claims (5)

  1. A hollow case (10) formed in a square shape with a hole (15) formed at the tip; An inner barrel (20) located on the inner side of the front end of a case (10), comprising a barrel body (21) having longitudinal guide grooves (22) formed on the upper and lower sides and a stopper (24) provided in the middle, a barrel stopper (23) having a nip hole (23') formed and connected to the front end of the barrel body (21), and a return spring (25) provided on the outer side of the barrel body (21) to return the barrel body (21); A ball shutter assembly (40) formed by combining a ball shutter (41) that moves a marker pen back and forth, a link (42), and a holder (43), and stored inside an inner barrel (20); An operating assembly (60) having a nip (100) received at the tip, an operating gear (64) that rotates the ball shutter assembly (40), and a main spring (65) coupled thereto; A gear guide (50) coupled to the inner rear end of the case (10) and equipped with an inner gear (55) to guide the movement of the operating assembly (60); and A two-stage protruding marker pen characterized by including a knob (30) that is coupled to the rear end of the operating unit (60) and is movably provided inside the gear guide (50) to move the operating unit (60) back and forth.
  2. In paragraph 1, The above operating assembly (60) comprises an operating body (61) having a stopper (61') on the outside, a connecting rod (62) having a gear turning projection (62') on the front end and a locking projection (62") formed on the rear end, the front end of which is connected to the rear end of the operating body (61) and a knob (30) coupled to the rear end to rotate the ball shutter assembly (40) through forward and backward movement, a marker receiving part (63) having a main spring (65) coupled to the front end of the operating body (61) and receiving a marker equipped with a nip (100), a connecting rod (63) having a main spring (65) coupled to the outside, a gear projection (64") coupled to the rear end of the connecting rod (62) and coupled to the inner gear of the gear guide (50) on the outside, and a gear part (64') coupled to the gear turning projection (62') of the connecting rod (62) at the end end. A two-stage protruding marker pen characterized by including an operating gear (64) that moves and fixes the operating body (61).
  3. In paragraph 1, The above gear guide (50) is characterized by comprising a main body (51) in which a knob (30) is slidably coupled to the inside and a longitudinal guide groove (52) is formed, a detachment prevention projection (53) protruding outwardly from the rear end of the main body (51) to prevent the knob (30) from detaching, and a guide part (54) connected to the front end of the main body (51) and having an internal gear (55) and slidably receiving a connecting rod (62) of an operating assembly (60).
  4. In paragraph 1, The above knob (30) is characterized by comprising a square-shaped knob body (31) that is slidably coupled inside a gear guide (50) and has hooks (32) provided at the upper and lower ends respectively and longitudinal insertion grooves (31') formed on the upper and lower sides, and a cylinder (33) that is connected to the tip of the knob body (31) to be inserted into the connecting rod (62) of the operating assembly (60) and has a locking projection (33') formed on the outer side, and a flexible latch (35) that is coupled to the insertion groove (31') of the knob body (31) and moves along the guide groove (52) of the gear guide (50).
  5. In paragraph 4, The above latch (35) is characterized by comprising a body (35a) formed in a 'U' shape to be inserted into an insertion groove (31') formed on the upper and lower sides of a knob body (31) and having a plurality of locking grooves (35b) formed on the upper and lower sides respectively, inner projections (35c) formed on the inner sides of both ends of the body (35a) to be caught on a locking projection (33') of a cylinder (33), and outer projections (35d) formed to protrude outwardly from the body (35a) to be caught on a detachment prevention projection (53) of a gear guide (50).

Description

2-Stage Protruding Marker Pen The present invention relates to a two-stage protruding marker pen, and more specifically, to a two-stage protruding marker pen in which an inner barrel is added to the inside of a case, and the inner and outer shapes of the sealing part of the inner barrel are maintained in a cylindrical shape to enable sealing, while allowing the outer shape of the case to be free, and a natural design is possible when the pen is stored and when it is protruded through a two-stage protruding structure. Writing instruments having a writing element that must not dry out can be broadly classified into two types: in the first group, the writing element is made difficult to dry out by improving the ink or air holes of the writing element, and in the other second group, a drying prevention device is provided on the body of the writing instrument. Group 1 consists of retractable writing instruments, such as marking pens using non-drying ink or ballpoint pens using water-based or oil-based ink that is difficult to dry. Retractable writing instruments have the advantage of being usable without the inconvenience of opening and closing a separate cap, but they have the disadvantage that they can only be applied to non-volatile or low-volatility writing instruments because the nib opening through which the nib emerges is simply a through hole at one end of the writing instrument. On the other hand, the second group is a writing instrument equipped with a drying prevention device, designed to prevent the ink from drying out by covering the front end of the writing instrument with a cap when not in use. However, writing instruments with caps are inefficient to use due to the inconvenience of opening and closing the cap, and the cap is easily lost. If the nib is left exposed to the air for a long time, the ink on the nib may dry out, which can shorten the lifespan of the writing instrument or cause it to be damaged. Furthermore, standard cap-type pens are not limited to a cylindrical shape but are manufactured in various shapes (square, elliptical, curved, etc.), and these products all maintain airtightness in areas requiring sealing using roughly two methods. The first method involves maintaining a circular shape for bonding with the lid. This is because maintaining a tight seal is impossible if the shape is not circular (ring-shaped). The second method involves ultrasonic welding while allowing for relatively free shape of the part joined to the body. In this method, airtightness is maintained through the bonding of plastics using ultrasonic welding. For example, commercially available pens maintain a circular shape. This is because the internal shape is formed circular by components such as shaft O-rings, connecting rod O-rings, and ball shutters for sealing; therefore, if the external shape were square or elliptical, sealing would be impossible. For reference, due to the characteristics of injection-molded plastics, if the inner and outer wall thicknesses are not uniform, shrinkage occurs, preventing the internal circular shape from being maintained and consequently making sealing impossible. In other words, conventional sealed pens have the problem that the shape of the pen is limited to a circular shape or requires a separate ultrasonic welding process in order to maintain airtightness of the cap to prevent the nib from drying out. Meanwhile, as a result of investigating the prior art related to the present invention, numerous patent documents were found, some of which are introduced below. Patent Document 1 discloses a retractable writing instrument equipped with an easy-to-use anti-drying device, wherein the retractable device is configured such that the cartridge and the link are slidably coupled within a holder, and a plurality of elastic slits formed on one end move up and down along the locking projection of the holder within a range of movement, and the link is engaged with the step of the cartridge by a locking part formed at the end of the elastic slit, so that when the knock part is pressed, the cartridge and the link move forward from the fixed O-ring and the holder, causing the parallel pin to move the pin slit of the ball-shaped door, and as a result, the rotation axis of the ball-shaped door supported on the spherical part rotates to become open inside the axis, thereby causing the nib to protrude, and the nib, which is the end part of the pen tip, can perform an airtight sealing function while retracting in a non-contact manner, and can prevent ink drying in the nib in advance without using a separate cap, and can physically protect the nib safely. Patent Document 2 discloses a writing instrument having an automatic sealing structure comprising: a main body case having a nib hole formed at one end; a knock part coupled to the other end of the main body case to protrude and retract the nib from the main body case by a pressing operation; a cartridge inserted like a spring inside the main