CN224256331U

CN224256331U - Mark pen structure

Info

Publication number: CN224256331U
Application number: CN202521195655.9U
Authority: CN
Inventors: 俞智远
Original assignee: Hangzhou Zhiyuan Plastic Products Co ltd
Current assignee: Hangzhou Zhiyuan Plastic Products Co ltd
Priority date: 2025-06-12
Filing date: 2025-06-12
Publication date: 2026-05-19
Anticipated expiration: 2035-06-12

Abstract

The utility model relates to a marker pen structure, comprising a pen tube, an ink bag tube, a rotary handle, and a limiting cap. The ink bag tube is placed inside the pen tube, with a pen tip at its front end. The writing end of the pen tip is located inside the grip end of the pen tube. The back end of the pen tube has a first internal thread, and the outer side has a first external thread radially; The front end of the handle is equipped with a second external thread radially outward, which can be screwed into the first internal thread at the back end of the pen tube to form a connection. The tail end of the ink bag tube is connected to the front end of the handle, and the pen tip can be extended or retracted by rotating the handle into or out of the tube. The limit cap is screwed onto the first external thread at the rear end of the pen tube through the second internal thread, thereby preventing the handle from unscrewing and detaching from the pen tube. Compared with existing technology, the structure of this marker pen achieves the extension and retraction function of the pen tip through the cooperation between the handle and the back end of the pen tube, as well as the connection between the handle and the ink bag tube. When not in use, the pen tip can be retracted to the grip end, effectively protecting the pen tip and extending the service life of the marker pen.

Description

Mark pen structure

Technical Field

The utility model belongs to the technical field of writing tools, and particularly relates to a marking pen structure.

Background

The marker pen is used as a common writing tool and is widely applied to a plurality of fields such as office work, study, painting, marking and the like. The conventional marking pen on the market is relatively simple and generally comprises a pen tube, an ink bag tube and a pen point, wherein the ink bag tube is arranged in the pen tube, the pen point is arranged at the front end of the ink bag tube, and writing is performed by pressing the pen point or directly using the pen point. However, the conventional marker has many defects that 1, when the marker is not used, the pen point is exposed to the outside and is easily polluted by external environment, such as dust, sundries and the like, which are attached to the pen point to influence the writing effect, even the pen point is possibly blocked, so that the service life of the marker is shortened, 2, because the pen point is exposed for a long time, the pen point is easily damaged by collision in the carrying or placing process, 3, the exposed pen point enables the ink in the ink bag tube to be easily contacted with air, so that the ink volatilizes, the writing smoothness and the service life of the marker are influenced, and 4, the marker with the pen point stretching function is relatively complex in operation mode, and a user is required to apply relatively large force or perform specific operation actions, so that the marker is not convenient to use.

Disclosure of utility model

The technical problems to be solved by the utility model are that the existing marker pen has poor nib protectiveness, low use safety, ink volatilization, inconvenient operation and the like, the usability and the user experience of the marker pen are improved, and the existing marker pen has the problems of poor nib protectiveness, low use safety, ink volatilization, inconvenient operation and the like.

The utility model provides a marking pen structure, which comprises a pen tube, an ink bag tube, a rotary handle and a limiting cap, wherein a pen point is arranged at the front end of the ink bag tube, the ink bag tube is arranged in the pen tube, the front end of the pen tube is a pen holding end, the writing end of the pen point is positioned in the pen holding end, a first internal thread is arranged in the rear end of the pen tube, a first external thread is radially arranged on the outer side of the pen tube, a second external thread is radially arranged on the outer side of the front end of the rotary handle, the rotary handle is screwed into the first internal thread at the rear end of the pen tube through the second external thread to form connection, the tail end of the ink bag tube is connected with the front end of the rotary handle, so that the writing end of the pen point extends out of or retracts into the pen holding end through the rotary handle, a second internal thread is arranged in the limiting cap, the end of the pen is axially provided with a through hole, and the rear end of the rotary handle outwards passes through the through hole, and the limiting cap is screwed with the first external thread at the rear end of the pen tube so as to avoid the rotary handle from being screwed out and separated from the pen tube.

Further, the diameter of the tail end of the knob is smaller than that of the second external thread at the front end of the knob, a limiting step is formed on the knob, and the knob is in limiting connection with the through hole through the limiting step.

Further, a pen clip attached to the outside of the pen tube is arranged on the outer side of the limit cap, and the rear end of the pen clip is connected with the limit cap.

Further, the front end of the rotary handle is axially provided with a mounting hole, and the tail end of the ink bag tube is clamped in the mounting hole.

Further, the tail end of the ink bag tube is covered with a silica gel plug, the tail end diameter of the silica gel plug is larger than or equal to the diameter of the ink bag tube, and the front end plug is in interference fit with the tail end tube of the ink bag tube.

The pen comprises a pen holder, an ink bag tube, a pen tip inlet and outlet hole, and a pen tip, wherein the ink is filled in the ink bag tube, the pen tip comprises an ink guide pen core and a mounting guide tube for mounting the ink guide pen core, the front end of the mounting guide tube is axially provided with a mounting jack, the tail end of the mounting guide tube is communicated with the front end of the ink bag tube, the pen holding end of the pen tube is in a hollow conical shape, the tip end of the pen tube is provided with the pen tip inlet and outlet hole, the front end of the ink guide pen core is used as a writing end and is correspondingly arranged with the pen tip inlet and outlet hole, and the tail end of the ink guide pen core is arranged in the mounting jack in a penetrating mode.

Further, a reset spring is sleeved on the installation conduit between the front end of the ink bag tube and the pen holding end.

Further, the pen tube is a metal pen tube, the rotary handle is a metal rotary handle, and the limiting cap is a metal limiting cap.

Further, anti-skid patterns are radially formed at one end of the tail end of the knob, which is located outside the through hole.

Compared with the prior art, the marking pen structure has the advantages that through the cooperation of the rotary handle and the rear end of the pen tube and the connection of the front end of the rotary handle and the ink bag tube in the pen tube, the rotary handle is screwed in or out of the rear end of the pen tube, the telescopic function of the pen point is realized, the pen point can be retracted into the pen holding end when the marking pen is not used, the pollution and collision of the pen point by the external environment are effectively avoided, and the service life of the marking pen is prolonged;

The pen point is retracted to the pen holding end, so that the contact area of ink and air is reduced, the volatilization speed of the ink is reduced, the ink is saved, the writing smoothness of the marker is ensured, the operation is simple and convenient, the writing end of the ink guiding pen core of the front pen point of the ink bag tube can be adjusted in a linkage manner by rotating the rotary handle anticlockwise or clockwise at one end outside the limit cap through screwing fingers, and the expansion and contraction of the writing end of the ink guiding pen core of the front pen point of the ink bag tube are realized in a pen point access hole without applying larger force or carrying out complex operation actions;

The setting of the upper limit step of the rotating handle is used for preventing the rotating handle from excessively penetrating when being screwed into the pen tube, or the threaded rotating section of the rotating handle is separated from the pen tube when the rotating handle is screwed out of the pen tube, and meanwhile, a certain positioning effect can be achieved, so that the connection between the rotating handle and the pen tube is more accurate and stable.

Drawings

FIG. 1 is a schematic diagram of a front view of a marker structure according to the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an exploded and cross-sectional schematic view of a marker structure according to the present utility model;

FIG. 4 is an exploded perspective view of a marker structure according to the present utility model;

FIG. 5 is a schematic perspective view of a marker structure according to the present utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-5, the marking pen structure of the utility model comprises a pen tube 1, an ink bag tube 2, a rotary handle 4 and a limit cap 5, wherein the front end of the ink bag tube 2 is provided with a pen point 3, the ink bag tube 2 is arranged in the pen tube 1, the front end of the pen tube 1 is a pen holding end 11, the writing end of the pen point 3 is arranged in the pen holding end 11, a first internal thread 12 is arranged in the rear end of the pen tube 1, a first external thread 13 is radially arranged on the outer side of the rear end of the pen tube 1, a second external thread 41 is arranged on the radial outer side of the front end of the rotary handle 4, the rotary handle 4 is connected with the front end of the pen tube 1 through the first internal thread 12 of the second external thread 41, the tail end of the ink bag tube 2 is connected with the front end of the rotary handle 4, so that the writing end of the pen point 3 extends out of or retracts into the pen holding end 11 through the rotary handle 4, when the marking pen is needed, the rotary handle 4 is rotated clockwise, the rotary handle 4 is gradually rotates out of the pen tube 1, the ink bag 2 is driven to move forwards, the ink bag tube 2 is driven to move forwards, the pen point 3 is prevented from rotating the pen holding end 11, and the pen point 3 is prevented from rotating backwards, and the pen point 3 is rotated to the pen holding end.

The second internal thread 51 is arranged in the limit cap 5, the end part of the limit cap is axially provided with a through hole 52, the rear end of the rotary handle 4 outwards penetrates through the through hole 52, and the limit cap 5 is screwed with the first external thread 13 at the rear end of the pen tube 1 through the second internal thread 51 so as to prevent the rotary handle 4 from being unscrewed and separated from the pen tube 1. The setting of spacing cap 5 has not only restricted the unscrewing distance of revolve handle 4, prevents to revolve handle 4 and breaks away from pen tube 1, has still played certain fixed action to revolve handle 4, makes the structure of marker more stable.

The diameter of the tail end of the knob 4 is smaller than that of the second external thread 41 at the front end of the knob, and a limiting step 40 is formed, and the knob 4 is in limiting connection with the through hole 52 through the limiting step 40. The limiting step 40 on the rotating handle 4 is used for preventing the rotating handle 4 from excessively penetrating when being screwed into the pen tube 1, or the threaded rotating section of the rotating handle 4 is separated from the pen tube 1 when the rotating handle 4 is screwed out of the pen tube 1, and meanwhile, a certain positioning effect can be achieved, so that the connection between the rotating handle 4 and the pen tube 1 is more accurate and stable.

The outside of spacing cap 5 is provided with pastes and locates the pen clip 6 outside the pen tube 1, and the rear end and the spacing cap 5 of pen clip 6 are connected. The pen clip 6 is convenient for a user to clip the marker pen in a pocket, a book and the like, and is convenient to carry and store. The front end of the knob 4 is axially provided with a mounting hole 42, and the tail end of the ink bag tube 2 is clamped in the mounting hole 42.

The tail end of the ink bag tube 2 is covered with a silica gel plug 7, the diameter of the tail end of the silica gel plug 7 is larger than or equal to that of the ink bag tube 2, and the front end plug is in interference fit with the tail end tube of the ink bag tube 2. The arrangement of the silica gel plug 7 can effectively prevent the ink 8 from leaking from the tail end of the ink bag tube 2, and simultaneously can play a certain sealing role, reduce the contact between the ink 8 and air and reduce the volatilization speed of the ink 8, and the ink 8 can be replenished to the ink bag tube 2 by puncturing the silica gel plug 7 through a needle tube and having the needle tube.

The pen tip 3 comprises an ink guiding pen core 31 and a mounting guide pipe 32 for mounting the ink guiding pen core 31, wherein the front end of the mounting guide pipe 32 is axially provided with a mounting jack 320, the tail end of the mounting guide pipe is communicated and connected with the front end of the ink guiding pen core 31, the pen holding end 11 of the pen tube 1 is in a hollow conical shape, the tip end of the pen tube is provided with a pen tip access hole 110, the front end of the ink guiding pen core 31 serving as a writing end is arranged corresponding to the pen tip access hole 110, the tail end of the ink guiding pen core 31 penetrates through the mounting jack 320, and in order to prevent the ink guiding pen core 31 from being inserted into the mounting jack 320 in a transitional mode, a limit buckle or step 310 is arranged in the middle of the ink guiding pen core, and a limit inner edge is also arranged in the mounting jack 320, so that the limit buckle or step 310 is matched with the limit inner edge to realize the mounting limit of the ink guiding pen core 31.

A return spring 9 is sleeved on the mounting conduit 32 between the front end of the ink bag tube 2 and the pen holding end 11. The reset spring 9 can enable the pen point 3 to be smoother when retracting the pen holding end 11, and can play a certain buffering role, reduce the collision between the pen point 3 and the pen holding end 11 and protect the pen point 3.

The pen tube 1 is a metal pen tube, the rotary handle 4 is a metal rotary handle, and the limit cap 5 is a metal limit cap. The use of the metal material can improve the overall texture and durability of the marker, and simultaneously, the aesthetic degree of the marker is also increased.

The tail end of the knob 4 is radially provided with anti-skid patterns 43 at one end outside the through hole 52. The friction between the hands of the user and the rotary handle 4 can be increased due to the arrangement of the anti-skid patterns 43, so that the rotary handle 4 can be rotated more easily and laborsaving, and the convenience of operation is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The marking pen structure comprises a pen tube (1) and an ink bag tube (2), wherein a pen point (3) is arranged at the front end of the ink bag tube (2), the ink bag tube (2) is arranged in the pen tube (1), the front end of the pen tube (1) is a pen holding end (11), and the writing end of the pen point (3) is positioned in the pen holding end (11), and the marking pen structure is characterized by further comprising a rotary handle (4) and a limiting cap (5), a first internal thread (12) is arranged in the rear end of the pen tube (1), a first external thread (13) is radially arranged on the outer side of the pen point, a second external thread (41) is arranged on the radial outer side of the front end of the rotary handle (4), the rotary handle (4) is connected with the first internal thread (12) which is screwed in the rear end of the pen tube (1) through the second external thread (41), the tail end of the ink bag tube (2) is connected with the front end of the rotary handle (4), so that the writing end of the pen point (3) is extended or retracted from the pen holding end (11) through the rotary handle (4), the second external thread (52) is axially arranged at the rear end (52) of the pen holding end (5), the limiting cap (5) is screwed with the first external thread (13) at the rear end of the pen tube (1) through the second internal thread (51) so as to prevent the rotary handle (4) from being screwed out and separated from the pen tube (1).

2. The marker structure according to claim 1, wherein the diameter of the tail end of the knob (4) is smaller than the diameter of the second external thread (41) at the front end of the knob, and a limit step (40) is formed, and the knob (4) is in limit connection with the through hole (52) through the limit step (40).

3. The marking pen structure according to claim 1, characterized in that a pen clip (6) attached to the outside of the pen tube (1) is arranged on the outer side of the limit cap (5), and the rear end of the pen clip (6) is connected with the limit cap (5).

4. The marker structure according to claim 1, wherein the front end of the knob (4) is axially provided with a mounting hole (42), and the tail end of the ink bag tube (2) is clamped in the mounting hole (42).

5. The marker structure according to claim 1 or 4, wherein the tail end of the ink bag tube (2) is capped with a silicone plug (7), the tail end diameter of the silicone plug (7) is greater than or equal to the diameter of the ink bag tube (2), and the front end plug is in interference fit with the tail end tube of the ink bag tube (2).

6. The marking pen structure according to claim 1, wherein the ink bag tube (2) is filled with ink (8), the pen point (3) comprises an ink guide pen core (31) and a mounting conduit (32) for mounting the ink guide pen core (31), a mounting hole (320) is axially formed in the front end of the mounting conduit (32), the tail end of the mounting conduit is communicated with the front end of the ink bag tube (2), the pen holding end (11) of the pen tube (1) is in a hollow conical shape, a pen point access hole (110) is formed in the tip end of the pen holding end, the front end of the ink guide pen core (31) is used as a writing end and corresponds to the pen point access hole (110), and the tail end of the ink guide pen core (31) is arranged in the mounting hole (320) in a penetrating mode.

7. The marker structure according to claim 6, characterized in that a return spring (9) is sleeved on the mounting conduit (32) between the front end of the ink bag tube (2) and the pen holding end (11).

8. The marking pen structure according to claim 1, wherein the pen tube (1) is a metal pen tube, the knob (4) is a metal knob, and the limit cap (5) is a metal limit cap.

9. The marker structure as claimed in claim 1, wherein the tail end of the knob (4) is provided with anti-slip patterns (43) radially at the outer end of the through hole.