CN218640597U - Sealed pressing pen - Google Patents

Abstract

The utility model provides a sealed pressing pen, include: when the sealing mechanism of the pen is switched from an open state to a closed state, under the action of the response delay mechanism, the actuating mechanism firstly actuates the ink outlet mechanism to retract into the shell through the sealing mechanism, and then the sealing mechanism is switched to the closed state; when the sealing mechanism is switched from a closed state to an open state, under the action of the response delay mechanism, the sealing mechanism completes the switching of the open state, and then the actuating mechanism actuates the ink outlet mechanism to extend out of the through hole of the writing end of the shell through the sealing mechanism.

Description

Sealed pressing pen

Technical Field

The utility model relates to a writing tools field, in particular to sealed pressing pen.

Background

The knock type pen is very popular with consumers because of its convenience in use and carrying and no lid loss, and has gradually become a trend developed by various manufacturers in recent years. The common pressing type pens in the market at present are mainly pressing type gel pens, pressing type ball-point pens or propelling pencils. The common feature of the above knock-type pens is that the above knock-type pens have no requirement for sealing effect because there is almost no air drying in the ink-discharging mechanism.

Since the pen has strong ink fluidity, it is easy to dry, and if the pressing structure is applied to the pen, the sealing effect needs to be considered. The press-type writing tools containing a sealing structure, such as press-type white board pens, press-type highlighters and the like, which exist in the market at present, mainly have the following problems:

the internal parts are too complicated and are not easy to assemble and return after being disassembled and ink is added; when the sealing mechanism realizes sealing by responding to the pressing operation, the pressing operation controls the extension and retraction of the writing part at the same time, so that the sealing structure and the writing part move simultaneously, interference and friction are easy to occur, a pen point is damaged, and a sealing part is dirtied; the sealing effect is poor, and the ink at the pen point is easy to dry; the inner structure is redundant and complicated, so that the pen holder is too thick and is not comfortable to hold.

Moreover, because the pen compares with whiteboard pen, highlighter, the leakproofness requires more highly, in order to prevent that dismouting is troublesome, nib and sealing member emergence are interfered, the handwriting structure is complicated, the pen-holder is too thick in the use at ordinary times of this type of writing instrument, grips uncomfortable problem, needs to develop a simple structure, product that stability is strong.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the pressing pen and using the structure redundant and miscellaneous, sealed effect poor and sealing member and nib not enough of interfering mutually, aim at provides a simple structure, the leakproofness is strong, pressing back nib and the sealed pressing pen of the mutual noninterference of sealing mechanism.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a sealed knock pen comprising: the ink-jet printer comprises a shell, an actuating mechanism, an ink outlet mechanism and a sealing mechanism; the casing has cavity and writing end in one end of the cavity, the cavity is used for holding the actuating mechanism, ink outlet mechanism and sealing mechanism; the sealing mechanism is arranged on the front side close to the writing end and can be switched between a closed state and an open state, the sealing mechanism basically blocks the communication between the cavity of the shell and the outside atmosphere in the closed state, and the sealing mechanism provides an open channel to form the communication between the cavity and the outside atmosphere in the open state; the ink outlet mechanism comprises a pen point and is used for realizing the writing function; the actuating mechanism is arranged at the rear side far away from the writing end and used for driving the sealing mechanism to switch between the closed state and the open state and simultaneously driving the pen point to extend out of or retract into the writing end of the shell through an open channel provided by the sealing mechanism; the sealed knock pen further comprises a response delay mechanism disposed between the actuation mechanism and the sealing mechanism; the response delay mechanism is configured to: when the sealing mechanism is switched from the closed state to the open state, the sealing mechanism completes the switching to the open state under the action of the response delay mechanism, then the pen point extends out of the writing end of the shell through the open channel of the sealing mechanism, and when the sealing mechanism is switched from the open state to the closed state, the pen point retracts into the cavity of the shell through the open channel of the sealing mechanism under the action of the response delay mechanism, and then the sealing mechanism is switched from the open state to the closed state.

Further, the response delay mechanism includes a return spring that exerts a pre-pressure elastic force at least in a closed state of the seal mechanism, the pre-pressure elastic force pressing the seal mechanism toward an open state.

Further, the sealing mechanism includes bush, sealing washer and ball valve.

Further, the lining and the sealing ring are both of through hole structures.

Further, the sealing ring is sleeved in the lining.

Further, the bushing includes a first connection portion and the ball valve includes a ball valve connection portion.

Further, the bushing is connected to a ball valve connection of the ball valve through a first connection, and the ball valve is rotatable about a connection point with the bushing.

Further, the housing includes a barrel and a neck.

Furthermore, the penholder is positioned at one side of the sealed pressing pen far away from the writing end, the pen neck is positioned at one side of the sealed pressing pen close to the writing end, and the penholder and the writing end are connected with each other.

Furthermore, the inner wall of the pen holder further comprises a guide groove, and the inner wall of the pen neck further comprises a positioning blocking rib and a pen neck boss.

Further, the ball valve is an open hemispherical shell and comprises a ball valve guide groove.

Further, the pen neck boss is matched with the ball valve guide groove.

Further, the actuating mechanism includes a thumb press, a wheel, and a liner and a retraction spring.

Furthermore, the pressing head comprises a pressing head boss, the rotating wheel comprises a rotating wheel boss and a rotating wheel guide groove, the pressing head boss is matched with the rotating wheel boss, and the rotating wheel guide groove is matched with the guide groove.

Further, the bushing of the sealing mechanism further includes a second connecting portion through which the bushing is adapted to be interlocked with the inner liner of the actuating mechanism in a direction in which the pen tip is retracted into the writing end, thereby achieving switching of the sealing mechanism from the open state to the closed state while imparting a pre-pressure elastic force to the return spring.

Furthermore, the sealing ring is made of elastic materials.

Furthermore, the end of the sealing ring close to the writing end is a big end, the end far away from the writing end is a small end, and the small end is in interference fit with the lining.

Further, under the closed state, big head end and ball valve outer wall are interference fit too.

Further, the ink outlet mechanism includes an ink bag, a reservoir, and a pen tip.

Further, the ink bag and the water storage device are connected end to end and are sleeved inside the lining together.

Further, the pen point covers one side of the water storage device close to the writing end.

Further, the actuating mechanism also comprises an ink bag sheath which is sleeved outside the ink bag.

Further, the ink bag sheath comprises a sheath connecting part, the lining comprises a lining connecting part, and the sheath connecting part and the lining connecting part are matched with each other to realize the connection of the ink bag sheath and the lining.

Furthermore, the sealed pressing pen also comprises a connecting screw, and the connecting screw is arranged between the pen holder and the pen neck.

Further, the penholder and the pen neck are connected through a screw.

Further, connect the spiral shell to include and connect the spiral shell guide slot, connect the spiral shell guide slot to realize connecting with the inside lining through the inside lining connecting portion.

The utility model provides a sealed pressing pen, including casing, actuating mechanism, go out black mechanism, sealing mechanism and response delay mechanism. The shell is of a cavity structure and is used for accommodating the actuating mechanism, the ink outlet mechanism and the sealing mechanism; the actuating mechanism is sleeved in the shell, is arranged on one side far away from the writing end of the sealed pressing pen, and responds to pressing operation to actuate the sealing mechanism to be switched between a closed state and an open state; the sealing mechanism is sleeved in the shell and is arranged on one side close to the writing end of the sealing pressing pen; the response delay mechanism is arranged at the connecting part of the actuating mechanism and the sealing mechanism, so that the actuating mechanism and the sealing mechanism do not move synchronously under the pressing operation; the ink outlet mechanism is used for realizing a writing function. When the sealing mechanism is switched from the open state to the closed state, under the action of the response delay mechanism, the actuating mechanism firstly actuates the ink outlet mechanism to retract into the shell through the sealing mechanism, and then the sealing mechanism is switched to the closed state; when the sealing mechanism is switched from the closed state to the open state, under the action of the response delay mechanism, after the sealing mechanism completes the switching of the open state, the actuating mechanism actuates the ink outlet mechanism to extend out of the through hole of the writing end of the shell through the sealing mechanism.

The technical effects of the utility model are as follows:

(1) Through the addition of the response delay mechanism, the ball valve opens the pen point before extending out when the pen point is pointed; when the pen is retracted, the pen point retracts into the ball valve and then is closed, so that scraping and abrasion between the pen point and the sealing mechanism can be effectively prevented;

(2) The sealing performance is strong, and the tip is not easy to dry;

(3) The structure design is simple, and the disassembly and the assembly are convenient;

(4) Due to the simple structure, the thickness of the pen body can be made to be more comfortable to hold.

To sum up, the utility model provides a sealing mechanism and nib do not take place to interfere, the leakproofness is strong, simple structure, grip comfortable sealed pressing pen.

Drawings

The foregoing technical content of the present invention as well as the following detailed description of the present invention will be better understood when read in conjunction with the accompanying drawings. It is to be noted that the figures are only examples of the claimed solution. In the drawings, like reference characters designate the same or similar elements.

FIG. 1 is an exploded view of a sealed tamper pen;

FIG. 2 is a perspective view of the thumb press;

FIG. 3 is a perspective view of the wheel;

FIG. 4 is a perspective view of the liner;

FIG. 5 is a cross-sectional view of the liner;

FIG. 6 is a perspective view of an ink bag sheath;

FIG. 7 is a perspective view of the engagement of the screw with the liner;

fig. 8 is a perspective view of the ink discharging mechanism;

FIG. 9 is a perspective view of the liner engaging the gasket;

FIG. 10 is a cross-sectional view of the seal ring;

FIG. 11 is a top view of the bushing;

FIG. 12 is a front view of the bushing;

FIG. 13 is a perspective view of the ball valve;

FIG. 14 is a perspective view of the pen neck;

FIG. 15 is a side view of the pen neck;

FIG. 16 is a perspective view of the return spring;

FIG. 17 is a schematic cross-sectional view showing the closed state of the seal-activated pen;

FIG. 18 is a schematic cross-sectional view showing an open state of the seal-actuated pen;

FIG. 19 is a schematic sectional view showing a state switching process of the seal-pressing pen.

Wherein the reference numerals are as follows:

100. shell body

110. Pen holder

111. Guide groove

120. Pen neck

121. Positioning blocking rib

122. Pen neck boss

123. Tip sleeve

130. Connecting screw

131. Screw receiving guide groove

200. Actuating mechanism

210. Pressing head

211. Thumb press boss

220. Rotating wheel

221. Rotary wheel boss

222. Runner guide slot

230. Inner lining

231. Lining connecting part

232. Ink filling port

233. First bump of lining

234. Second bump of liner

235. Lining boss

240. Ink bag sheath

241. Sheath connecting part

250. Telescopic spring

300. Ink outlet mechanism

310. Ink bag

311. Ink bag head

320. Water storage device

330. Pen point

400. Sealing mechanism

420. Bushing

421. First connection part of bush

422. Bushing second connection part

423. Bushing limiting groove

430. Sealing ring

431. Big head end

432. Small head end

440. Ball valve

441. Ball valve guide groove

442. Ball valve connecting part

500. Response delay mechanism/return spring

Detailed Description

The detailed features and advantages of the invention are described in the detailed description which follows, and will be readily apparent to those skilled in the art from that description or recognized by practicing the invention as described herein, together with the objects and advantages thereof.

For ease of understanding, directional terms such as "front" and "rear" are used herein with respect to the writing end of the sealed knock pen as front and the knock end as rear.

FIG. 1 is an exploded view of the seal-actuated pen in one embodiment, which includes a housing 100, an actuation mechanism 200, an ink-discharge mechanism 300, a sealing mechanism 400, and a response-delaying mechanism 500. The housing 100 contains a cavity for accommodating the actuator mechanism 200, the ink outlet mechanism 300, and the sealing mechanism 400, and a writing end at one end of the cavity; the sealing mechanism 400 is disposed at a front side near the writing end and is switchable between a closed state in which the sealing mechanism 400 substantially blocks the communication of the cavity of the housing 100 with the outside atmosphere and an open state in which the sealing mechanism 400 provides an open passage to form the communication of the cavity with the outside atmosphere; the ink discharging mechanism 300 includes a pen tip 330 for performing a writing function; the actuating mechanism 200 is sleeved in the casing 100 and disposed at a side far from the writing end, the actuating mechanism 200 responds to the pressing operation and acts on the sealing mechanism 400 together with the response delay mechanism 500, so that the sealing mechanism 400 is switched between the closed state and the open state, and simultaneously, the pen tip 330 is driven to extend out of or retract into the writing end of the casing 100 through the open channel provided by the sealing mechanism 400; the response delay mechanism 500 is provided between the actuation mechanism 200 and the sealing mechanism 400, and is configured to: when the seal mechanism 400 is switched from the closed state to the open state, the response delay mechanism 500 switches the seal mechanism 400 to the open state, and then the pen tip 330 protrudes out of the writing end of the casing 100 through the open passage of the seal mechanism 400, whereas when the seal mechanism 400 is switched from the open state to the closed state, the response delay mechanism 500 retracts the pen tip 330 into the cavity of the casing 100 through the open passage of the seal mechanism 400, and then the seal mechanism 400 switches from the open state to the closed state.

Specifically, the actuation mechanism 200 includes a thumb press 210, a wheel 220, an ink bag sheath 240, a liner 230, and a retraction spring 250. As shown in fig. 17, the thumb press 210, the rotary wheel 220, the ink bag jacket 240 and the liner 230 are sequentially connected end to end from back to front, and the extension spring 250 is sleeved outside the liner 230 and is used for applying elastic force to match the thumb press 210 to realize reciprocating movement along the axial direction. As shown in fig. 2, the front section of the thumb press 210 includes a thumb press boss 211, and the thumb press boss 211 is serrated. As shown in figure 3, the rear end of the rotating wheel 220 comprises a rotating wheel boss 221 and a rotating wheel guide groove 222, when the writing function is used, the pressing button 210 is pressed, the pressing button 210 moves forwards in response to the pressure, the rotating wheel 220 is pushed to move forwards, the guide groove 111 on the pen holder 110 is matched with the rotating wheel guide groove 222 and the rotating wheel 220 moves forwards along the pen holder 110, when the pressing button 210 is pressed to the bottom, the rotating wheel guide groove 222 is separated from the guide groove 111 and rotates under the action of the boss inclined surface at the front end of the guide groove 111, the pressing button 210 is stopped, the rotating wheel boss 221 is clamped at the step in front of the guide groove 111, and at the moment, the pen point 330 extends out of the front section to write.

Specifically, the liner 230 is structured as shown in fig. 4 and 5, and the liner 230 is substantially cylindrical and includes a liner first projection 233, a liner second projection 234, and an ink injection port 232. The ink bag cover 240 is also generally cylindrical in structure as shown in fig. 6, and includes a cover connecting portion 241, in this embodiment, the cover connecting portion 241 is an L-shaped channel. The liner 230 and the ink bag jacket 240 are connected with the jacket connecting part 241 through the first lug 233, the first lug 233 is inserted into the jacket connecting part 241 along the axial direction, and after the first lug 233 is inserted to the bottom in the axial direction, the relative rotation is performed, so that the first lug 233 moves along the circumferential direction and rotates to the bottom, and thus, the matching of the liner 230 and the ink bag jacket 240 is realized, the first lug 233 of the liner 230 is reliably connected by being restrained by the circumferential direction of the jacket connecting part 241, and the structure is also convenient to disassemble.

Specifically, the sealed pressing pen further includes a screw receiving unit 130 in one embodiment, and the screw receiving unit 130 is disposed between the barrel 110 and the neck 120 and is sleeved outside the liner 230, so that the barrel 110 and the neck 120 are connected. As shown in fig. 7, one way of the screw receiving 130 and the lining 230 are mutually matched, the screw receiving 130 includes a screw receiving guide slot 131, in this embodiment, the screw receiving guide slot 131 is a U-shaped slot, one long side of which is a through slot, and the other side is a sealing slot. The second liner protrusion 234 is axially inserted through one side of the through groove of the screw receiving guide groove 131, then rotates to the front end of the sealing groove along the circumferential direction, and then moves to the bottom along the axial direction, so that the connection between the screw receiving 130 and the liner 230 is completed, and as can be seen from fig. 7, the second liner protrusion 234 is circumferentially constrained by the screw receiving guide groove 131 and is not constrained in the axial direction. Accordingly, during use, the liner 230 may move axially without rotation relative to the socket bolt 130.

In one embodiment of the present invention, as shown in fig. 1 and 8, the ink discharging mechanism 300 further includes an ink bag 310 and a water reservoir 320, the ink bag 310 includes an ink bag head 311, the ink bag head 311 is inserted into the rear end of the ink filling port 232, and the water reservoir is inserted into the front end of the ink filling port 232, so as to ensure the sealing performance of the ink discharging mechanism 300. During writing, the ink in the ink reservoir 310 is drawn into the nib 330 by capillary action under the action of the reservoir 320 to complete writing.

Specifically, the sealing mechanism 400 includes a bushing 420, a sealing ring 430, and a ball valve 440. As shown in fig. 1 and 9, the bushing 420 is disposed outside the sealing ring 430, and the bushing 420 is connected to the ball valve 440. Referring to fig. 1 and 10, the front end of the sealing ring 430 is a large head end 431, the rear end is a small head end 432, the small head end 432 is in interference fit with the front end of the liner 230, and the large head end 431 is in interference fit with the ball valve 440 in a closed state. The sealing ring 430 may be made of an elastic material. Referring to fig. 11, the bushing 420 has a first bushing coupling part 421 at a front end thereof, a second bushing coupling part 422 at a rear end thereof, and a bushing stopper groove 423 on an outer surface thereof. Referring to fig. 12, the ball valve 440 is provided at both sides with a ball valve guide groove 441 and a ball valve connection portion 442.

More specifically, in the present embodiment, the first connecting portion 421 is a sheet-shaped boss, a circular through hole is formed in the center of the boss, and the second connecting portion is a hook. The ball valve coupling portion 442 is a projection, and it is possible to accomplish the coupling through the through hole of the first coupling portion 421 and to achieve the rotation of the ball valve 440 in the radial direction. The hub second coupling portion 422 is adapted to catch the liner boss 235 to effect interlocking of the hub 420 with the liner 230 when the liner 230 is moved in a direction toward the rear of the pen (i.e., a direction in which the pen tip is retracted into the housing). The limiting groove 423 is a straight groove with a front end penetrating through and a rear end being sealed.

Fig. 14 and 15 show the structure of the pen neck 120 in one embodiment, specifically, the pen neck 120 includes a positioning rib 121 and a pen neck boss 122, wherein the positioning rib 121 is matched with the limit groove 423, the pen neck boss 122 is matched with the ball valve guide groove 441, and the ball valve 440 is doubly constrained by the bushing first connection portion 421 and the pen neck boss 122. It will be appreciated that when the seal is depressed, the ball valve 440, under the dual constraint of the depression force and the neck boss 122, may move axially while rotating about the first connection 421. The positioning rib 421 can limit the angle that the ball valve 440 can rotate by the cooperation of the pen neck protrusion 122 and the pen neck protrusion, and precisely position the position where the ball valve 440 can rotate to open or close.

As shown in fig. 16, in one embodiment, the rear end of the sleeve 420 is sleeved with a return spring 500, which constitutes a response delay mechanism, and the return spring 500 is always in a state of having a pre-pressure elasticity in the closed state of the sealing mechanism 400, and is pressed between the cap 120 and the sleeve 420, so as to apply a forward pre-pressure to the sleeve 420.

As shown in FIG. 17, when the seal-actuated pen is in the closed position, the nib 330 is retracted within the neck 120 and the ball valve 440 is in interference fit with the sealing ring 430, in the closed position. When writing is required, the knock rod 210 moves forward, and simultaneously the bushing 420 of the sealing mechanism 400 moves forward synchronously under the pre-pressure of the return spring 500, and the ball valve 440 rotates by the neck boss 122 when moving forward in the axial direction, and in this process, the entire sealing mechanism 400 moves forward synchronously with the pen tip 330 until the pen tip 330 is switched to the open state, so that the pen tip 330 does not touch the sealing mechanism 400 in front all the time. Fig. 19 shows a critical point of switching between the closed state and the open state, where the ball valve 440 rotates 90 °, an open channel is formed in front of the neck 120, the through-hole channel of the sealing ring 430 is completely exposed, the bushing 420 is positioned at the limited position under the action of the neck positioning rib 121, as the liner 230 continues to advance, the pen point is exposed at the front end (i.e., writing end) of the neck 120 through the through-hole of the sealing ring until the pen point is positioned at the matched limited position of the rotary wheel boss 221 and the guide groove 111 boss, and the state at this time refers to fig. 18, in which the user can write.

When the pen point 330 is switched from the open state to the closed state, the pen point moves into the cavity of the casing 100 under the elastic action of the extension spring 250, and the bushing 420 is not moved temporarily under the pressure action of the return spring 500 on the bushing 420, and at this time, the ball valve 440 is not moved, and when the pen point 330 retracts inside the pen neck 120 and is far away from the sealing mechanism 400, the lining 230 drives the bushing 420 and drives the ball valve 440 to move backwards through the hooking action of the lining boss 235 on the bushing second connection portion 422, so that the switching to the closed state is completed. That is, the pen tip 330 completes the action of retracting the sealing ring 430, and the bushing 420 will drive the ball valve 440 backward and complete the sealing under the action of the liner 230. During the rearward movement of the bushing 420 by the liner 230, the return spring 500 is compressed to impart a pre-loaded spring force to facilitate opening of the sealing mechanism 400 during the next actuation. It will be appreciated that the spring force of the extension spring 250 is configured to be greater than the return spring 500 at all times during operation to achieve proper functioning of the actuation mechanism 200. It will also be appreciated that the interaction between the sealing mechanism, the actuating mechanism and the response delay mechanism can be designed relatively flexibly, as long as the opening and closing of the sealing mechanism is not interfered with the extension and retraction of the pen tip, for example, the unidirectional linkage between the liner of the sealing mechanism and the liner of the actuating mechanism can be adjusted within a certain range as required to change the interval between the closing of the sealing mechanism and the retraction of the pen tip.

The terms and expressions which have been employed are used as terms of description and not of limitation. The use of such terms and expressions is not intended to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications may be made within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.

Also, it should be noted that, although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention, and that various equivalent changes or substitutions can be made without departing from the spirit of the present invention, and therefore, it is intended that all changes and modifications to the above embodiments within the scope of the present invention be included in the claims of the present invention.

Claims (10)

1. A sealed knock pen comprising: a housing (100), an actuating mechanism (200), an ink outlet mechanism (300) and a sealing mechanism (400);

the housing (100) having a cavity for receiving the actuating mechanism (200), the ink outlet mechanism (300) and the sealing mechanism (400), and a writing end at one end of the cavity;

the sealing mechanism (400) is arranged close to the front side of the writing end and can be switched between a closed state and an open state, in the closed state, the sealing mechanism (400) basically blocks the communication between the cavity of the shell (100) and the outside atmosphere, and in the open state, the sealing mechanism (400) provides an open channel to form the communication between the cavity and the outside atmosphere;

the ink outlet mechanism (300) comprises a pen point (330) for realizing a writing function;

the actuating mechanism (200) is arranged at the rear side far away from the writing end and is used for driving the sealing mechanism (400) to switch between the closed state and the open state and simultaneously driving the pen point (330) to extend out or retract into the writing end of the shell (100) through the open channel provided by the sealing mechanism (400);

it is characterized in that the preparation method is characterized in that,

the seal-actuated pen further comprises a response-delaying mechanism (500), the response-delaying mechanism (500) being disposed between the actuation mechanism (200) and the sealing mechanism (400);

the response delay mechanism (500) is arranged to: when the sealing mechanism (400) is switched from the closed state to the open state, under the action of the response delay mechanism (500), the sealing mechanism (400) completes the switching to the open state, then the pen point (330) extends out of the writing end of the shell (100) through the open channel of the sealing mechanism (400),

when the sealing mechanism (400) is switched from the open state to the closed state, under the action of the response delay mechanism (500), the pen point (330) is firstly retracted into the cavity of the shell (100) through the open channel of the sealing mechanism (400), and then the sealing mechanism (400) is switched from the open state to the closed state.

2. The sealing knock pen according to claim 1, wherein the response delaying mechanism (500) includes a return spring acting with a pre-pressure spring force at least in the closed state of the sealing mechanism (400), the pre-pressure spring force pressing the sealing mechanism (400) toward the open state.

3. The seal knock pen according to claim 2, wherein the sealing mechanism (400) comprises a bushing (420), a seal ring (430), and a ball valve (440), the bushing (420) and the seal ring (430) are both of a through hole structure, the seal ring (430) is sleeved in the bushing (420), the bushing (420) comprises a first connection portion (421), the ball valve (440) comprises a ball valve connection portion (442), the bushing (420) is connected to the ball valve connection portion (442) of the ball valve (440) through the first connection portion (421), and the ball valve (440) is rotatable about a connection point with the bushing (420).

4. The hermetically sealed knock pen according to claim 3, wherein the casing (100) comprises a barrel (110) and a neck (120), the barrel (110) being located on a side away from the writing end, the neck (120) being located on a side close to the writing end, the two being connected to each other; the inner wall of the pen holder (110) further comprises a guide groove (111), and the inner wall of the pen neck (120) further comprises a positioning blocking rib (121) and a pen neck boss (122).

5. The seal knock pen according to claim 4, wherein said ball valve (440) is an open hemispherical shell including a ball valve guide (441); the pen neck boss (122) is matched with the ball valve guide groove (441).

6. The sealed actuation pen according to any one of claims 4 to 5, characterized in that the actuation mechanism (200) comprises a thumb press (210), a wheel (220), a liner (230) and a retractable spring (250), the thumb press (210) comprises a thumb press boss (211), the wheel comprises a wheel boss (221) and a wheel guide groove (222), the thumb press boss (211) is fitted with the wheel boss (221), the wheel guide groove (222) is fitted with the guide groove (111); the bushing (420) of the sealing mechanism (400) further comprises a second connection portion (422), the bushing being adapted to be interlocked with the inner liner (230) of the actuating mechanism (200) through the second connection portion (422) in a direction in which the writing tip (330) retracts into the writing end, thereby enabling switching of the sealing mechanism (400) from the open state to the closed state while imparting the pre-loaded elastic force to the return spring.

7. The seal knock pen according to claim 6, wherein the seal ring (430) is an elastomeric material, the end of the seal ring (430) near the writing end is a large end (431) and the end away from the writing end is a small end (432), the small end (432) is an interference fit with the liner (230); in the closed state, the big head end (431) is in interference fit with the outer wall of the ball valve (440).

8. The sealed knock pen of claim 6, wherein the ink outlet mechanism (300) further comprises an ink reservoir (310) and a water reservoir (320), the ink reservoir (320) and the ink reservoir (310) being joined end-to-end and collectively disposed within the liner (230), the nib (330) overlying the water reservoir (320) on a side thereof adjacent the writing end.

9. The sealed knock pen of claim 8, wherein the actuation mechanism (200) further comprises an ink bag sheath (240) disposed outside the ink bag (310), the ink bag sheath (240) including a sheath connector (241), the liner (230) including a liner connector (231), the sheath connector (241) and the liner connector (231) cooperating to effect connection of the ink bag sheath (240) to the liner (230).

10. The hermetic press pen according to claim 9, further comprising a screw joint (130), wherein the screw joint (130) is disposed between the barrel (110) and the neck (120), the barrel (110) and the neck (120) are connected by the screw joint (130), the screw joint (130) includes a screw joint guide groove (131), and the screw joint guide groove (131) realizes the connection of the screw joint (130) and the liner (230) by the liner connection part (231).

Images