CN116968466A

CN116968466A - Pressing writing stationery

Info

Publication number: CN116968466A
Application number: CN202210427950.7A
Authority: CN
Inventors: 王元鸿; 金辉祚
Original assignee: Qingdao Dianshi Stationery Co ltd
Current assignee: Qingdao Dianshi Stationery Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-10-31
Also published as: WO2023202528A1; TW202402555A

Abstract

The invention discloses a pressing writing stationery, which comprises: the pen comprises a pen holder, wherein an access hole is formed in the head of the pen holder, an elastic part is arranged at the tail of the pen holder, and a first clamping part is arranged on the elastic part; the head of the ink tube is provided with a pen point, the ink tube is slidably arranged in the pen holder, and the pen point is close to the access hole; the pen clip is provided with a second clamping part and is arranged at the tail part of the ink tube; the spring is arranged in the pen holder and applies elastic force to the ink tube towards the direction of the pen clip; the pen clip is configured to move along with the ink tube and drive the elastic component to deform, and the second clamping part is configured to be selectively clamped and positioned with the first clamping part after the pen clip moves along with the ink tube. The whole structure of the pressing writing stationery is simplified, so that the assembling is convenient, and the use reliability is improved.

Description

Pressing writing stationery

Technical Field

The invention relates to stationery, in particular to pressing type writing stationery.

Background

At present, writing pens (sign pens, oil pens, neutral pens and the like) are indispensable stationery in daily life and work of people. The writing pens are divided into: the push type writing stationery and the cap type writing pen are widely used, and the push type writing stationery is convenient to operate. For the pressing writing stationery using the ink, the drying prevention protection of the pen point is particularly important, and for example, chinese patent publication No. CN114103527a discloses a pressing writing stationery respectively, which includes a pen holder, a pen point, a spring, a pen clip, and the like. The pen point can be driven to slide in the pen holder by being pressed by a user, so that the pen point of the pen point can extend out of the pen holder or retract into the pen holder. In order to keep the nib stationary after extending out of the pen holder, the pen clip is matched with a clamping ring arranged on the nib. However, in the use, the snap ring rotates on the nib to cooperate the draw-in groove on the nib to realize the location, appears the snap ring to rotate unsmoothly easily and cause the card to be duned, and then lead to the user to use experience nature relatively poor. In view of this, how to design a stationery with a simple structure, convenient assembly and improved user experience is a technical problem to be solved by the invention.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the push type writing stationery is simple in overall structure, convenient to assemble and high in use reliability.

The technical scheme provided by the invention is that the pressing type writing stationery comprises:

the pen comprises a pen holder, wherein an access hole is formed in the head of the pen holder, an elastic part is arranged at the tail of the pen holder, and a first clamping part is arranged on the elastic part;

the ink tube is arranged at the head part of the ink tube, the tail part of the ink tube is provided with a pen cap, the ink tube is slidably arranged in the pen holder, and the pen point is close to the access hole;

the pen clip is provided with a second clamping part and is arranged at the tail part of the ink tube;

the spring is arranged in the pen holder and applies elastic force to the ink tube towards the direction of the pen clip;

the pen clip is configured to move along with the ink tube and drive the elastic component to deform, and the second clamping part is configured to be selectively clamped and positioned with the first clamping part after the pen clip moves along with the ink tube.

Through setting up the elastic component that has elastic deformation function on the pen-holder to dispose first joint portion on the elastic component, corresponding, dispose the second joint portion on the pen holder, when using, through pressing the printing ink pipe and remove in the pen-holder, in order to drive the elastic component through the pen holder and take place deformation and then make first joint portion take place the change of position, and then make after the nib stretches out from the pen-holder, utilize first joint portion and second joint portion to cooperate to fix a position the pen holder, in order to keep the nib in the state of stretching out, the elastic component only takes place deformation and can not remove or rotate in the use, avoid leading to using unsmoothly because of the snap ring card that rotates, and then improved the reliability of use, realize simplifying the overall structure of push type writing stationery in order to assemble with the convenience, and improve the reliability of use.

Further, after the nib extends out of the pen holder to the outside of the access hole, the second clamping part is clamped and positioned with the first clamping part; after the nib is retracted into the pen holder from the outside of the access hole, the second clamping part and the first clamping part are mutually separated.

Further, the elastic component is arranged along the length direction of the pen holder, and the first clamping part is a clamping protrusion formed on the elastic component;

the pen clip comprises a clip, a connecting piece and a mounting piece, wherein one end part of the clip is arranged on the mounting piece through the connecting piece, the mounting piece is connected with the ink tube, a clamping groove is formed in the connecting piece, and the clamping groove is the second clamping part;

after the pen point extends out of the pen holder to the outside of the access hole, the clamping protrusion is clamped in the clamping groove and used for preventing the ink tube from retracting under the action of the spring.

Further, the side part of the connecting piece is also provided with the clamping groove, the first guide surface, the second guide surface and the third guide surface;

the direction from the tail to the head of the pen holder is a first direction, and the direction from the outer wall of the pen holder to the clip is a second direction;

the first guide surface, the clamping groove and the third guide surface are sequentially arranged along the second direction;

the first guide surface extends from the outer wall of the pen holder towards the clamping groove in an inclined mode along the first direction, the second guide surface extends from the clamping groove towards the third guide surface in an inclined mode along the back to the first direction, and the third guide surface extends to the edge of the connecting piece along the first direction.

Further, a first guide surface is arranged on the side wall of the connecting piece, is arranged between the clamping groove and the pen holder, and is arranged on the front side of the first guide surface along the first direction; the first guide surface is inclined from the outer wall of the barrel toward the outside of the connecting piece in the second direction.

Further, the side wall of the connecting member is provided with a second guide surface inclined from the first guide surface toward the inside of the connecting member in the first direction.

Further, the two sides of the connecting piece are respectively provided with the second clamping parts; the elastic component is provided with first guide way, first guide way is followed the length direction of pen holder extends, the both sides of first guide way are provided with the relative arrangement the joint is protruding, the afterbody of pen holder is provided with the intercommunication the breach of first guide way, the connecting piece slidable sets up in the first guide way.

Further, a second guide groove is further formed in the pen holder, a guide block is arranged on the pen clip, and the guide block is slidably arranged in the second guide groove.

Further, the elastic component and the pen holder are of an integral structure, the pen holder is provided with an accommodating groove, and the elastic component is of a board-mounted structure and is located in the accommodating groove.

Furthermore, a positioning part is arranged on the inner wall of the penholder close to the access hole, and an installation part is arranged on the ink tube;

the pressing type writing stationery further comprises:

the sealing assembly comprises a connecting pipe and a sealing sleeve, wherein one end part of the connecting pipe is provided with a movable sealing part, the sealing part is also provided with a connecting part, the sealing part is used for selectively covering a port of the sealing sleeve, and the connecting part is connected with the sealing sleeve;

the sealing assembly is arranged in the penholder, the connecting pipe and the sealing sleeve are sleeved on the ink pipe, the sealing sleeve is also propped against the positioning part, and the spring is positioned between the mounting part and the sealing sleeve;

in a state that the nib is retracted into the access hole, the nib is positioned in the sealing sleeve, and the sealing part is positioned between the nib and the access hole and covers a port of the sealing sleeve;

the sealing part is positioned at one side of the sealing sleeve in a state that the pen point is extended out of the access hole.

Further, the pen point passes through the port of the sealing sleeve, and the sealing sleeve pulls the sealing part to one side of the sealing sleeve through the connecting part.

Furthermore, the ink tube can drive the connecting tube to slide in the pen holder, and the sealing sleeve pulls the sealing part to move through the connecting part so as to open and close the port of the sealing sleeve.

Further, the outer wall of the sealing sleeve is provided with a protruding portion, and the protruding portion abuts against the positioning portion.

Further, the connecting portion is provided with a clamping hole, and the connecting portion is clamped on the protruding portion through the clamping hole.

Further, the connecting pipe, the sealing part and the connecting part are of an integrated structure.

Further, the connecting pipe is close to the end of the access hole and is provided with two extension parts which are arranged oppositely, a first flexible part is arranged between the extension parts and the sealing part, and a second flexible part is arranged between the sealing part and the connecting part.

Further, a clamping part is arranged at the other end part of the connecting pipe, a pushing part is further arranged on the ink pipe, and the pushing part is used for propping against the clamping part to push the connecting pipe to move relative to the pen holder.

Further, the clamping part is an elastic piece arranged on the connecting pipe, the free end part of the elastic piece is used for being matched with the pushing part, a limiting protrusion is arranged on the outer surface of the free end part of the elastic piece, and a limiting hole used for being matched with the limiting protrusion is formed in the side wall of the pen holder;

and the limiting protrusion is clamped in the limiting hole in a state that the sealing part is separated from the port of the sealing sleeve and is positioned at one side of the sealing sleeve.

Further, the pushing part is a second step surface formed on the ink tube, and the edge of the second step surface forms a chamfer structure.

Further, a first guide groove extending along the length direction is formed in the inner wall of the pen holder, a first sliding block is arranged on the outer wall of the connecting pipe, and the first sliding block is arranged in the first guide groove in a sliding mode.

Further, a limiting block is arranged on the outer surface of the connecting portion, and the limiting block is also located in the first guide groove.

Further, a second guide groove is formed in the pipe wall of the connecting pipe, a second sliding block is arranged on the pipe wall of the ink pipe, and the second sliding block is arranged in the second guide groove in a sliding mode. .

Compared with the prior art, the invention has the advantages and positive effects that: according to the pressing writing utensil provided by the invention, the nib on the ink tube is sealed by arranging the sealing component, the sealing part on the connecting tube is matched with the sealing sleeve in a non-use state, the sealing part shields the port of the sealing sleeve to seal the nib in the sealing sleeve, when a user presses the writing pen to enable the nib to extend out of the access hole, the sealing sleeve pulls the sealing part to move through the connecting part, so that the sealing part leaves the port of the sealing sleeve, and the nib can extend out of the pen holder through the sealing sleeve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic view showing a structure of a pressing type writing instrument according to an embodiment of the present invention in a closed state;

FIG. 2 is a schematic view showing a structure of an embodiment of the pressing writing instrument of the present invention in an opened state;

FIG. 3 is a partial cross-sectional view of an embodiment of the push-type writing instrument of the present invention;

FIG. 4 is an exploded view of an embodiment of the push-type writing instrument of the present invention;

FIG. 5 is an enlarged partial schematic view of area A of FIG. 4;

FIG. 6 is a schematic view of the structure of a pen clip according to an embodiment of the push-type writing instrument of the present invention;

FIG. 7 is a partially enlarged schematic illustration of region B of FIG. 6;

FIG. 8 is a schematic view showing a partial structure of the embodiment of the push-type writing instrument of the present invention in a closed state;

FIG. 9 is a schematic view showing a partial structure of an embodiment of the push-type writing instrument of the present invention in an opened state;

FIG. 10 is a partial cross-sectional view of an embodiment of the push-type writing instrument of the present invention in a closed state;

FIG. 11 is a partial cross-sectional view of an embodiment of the push-type writing instrument of the present invention in an open state;

fig. 12 is a schematic structural view of a connection tube in the embodiment of the push-type writing instrument of the present invention.

Reference numerals:

a penholder 1;

an access hole 11, a positioning part 12, a limiting hole 13, a first guide groove 14, an elastic part 15, a second guide groove 16 and a containing groove 17;

the clamping protrusion 151, the first guide groove 152 and the notch 153;

a spring 2;

an ink tube 3;

a pen tip 31, a mounting portion 32, a pushing portion 33, and a second slider 34;

a sealing assembly 4;

a connecting tube 41, a sealing sleeve 42;

the sealing part 411, the connecting part 412, the clamping hole 413, the extension part 414, the first flexible part 415, the second flexible part 416, the clamping part 417, the limit protrusion 418, the second guide groove 419, the first sliding block 401, the limit block 402 and the protrusion 421;

a pen clip 5;

clip 51, connector 52, mount 53, guide block 54;

the engagement groove 521, the first guide surface 522, the second guide surface 523, the third guide surface 524, the first guide surface 525, and the second guide surface 526;

a cap 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

An embodiment of the present invention provides a pressing writing instrument, as shown in fig. 1 to 7, including:

the pen comprises a pen holder 1, wherein an access hole 11 is formed in the head of the pen holder, an elastic part 15 is arranged at the tail of the pen holder, and a first clamping part is arranged on the elastic part 15;

an ink tube 3, the head of which is provided with a pen point, the ink tube is slidably arranged in the pen holder, and the pen point is close to the access hole;

the pen clip 5 is provided with a second clamping part, and the pen clip 5 is arranged at the tail part of the ink tube;

a spring 2 provided in the barrel and applying an elastic force toward the clip 5 to the ink tube;

wherein, the pen clip 5 is configured to move along with the ink tube and drive the elastic component 15 to deform, and the second clamping portion is configured to selectively clamp with the first clamping portion for positioning after the pen clip 5 moves along with the ink tube.

Specifically, during the assembly process, the pen clip 5 is disposed on the ink tube, and then, the spring and the ink tube are both assembled into the pen shaft. In the use process, a user applies a pressing force to the ink tube so as to drive the ink tube to overcome the elasticity of the spring and slide in the pen holder.

During the sliding of the ink tube, the pen clip 5 will be driven to move synchronously, while the pen clip 5 will move along the elastic member 15 during the movement. In the process that the pen point 31 extends from the access hole 11 to the outside of the pen holder, the pen clip 5 moves to the first clamping part of the elastic component 15, and the first clamping part is in contact with the pen clip 5 to deform the elastic component 15, so that the first clamping part is clamped with the second clamping part on the pen clip 5. And after the user presses the ink tube again and loosens the hand, under the action of the spring, the ink tube drives the pen point to retract into the pen holder, and meanwhile, the first clamping part and the second clamping part are mutually separated.

In order to facilitate the user to press the ink tube 3, a pen cap 6 may be disposed on the ink tube 3, and in the use process, the user applies a pressing force to the pen cap to drive the ink tube to slide in the pen holder against the elastic force of the spring.

In addition, after the pen point extends out of the access hole from the pen holder, the second clamping part is clamped and positioned with the first clamping part; after the nib is retracted into the pen holder from the outside of the access hole, the second clamping part and the first clamping part are mutually separated.

Further, the elastic member 15 is disposed along the length direction of the pen holder, and the first clamping portion is a clamping protrusion 151 formed on the elastic member 15;

the pen clip 5 comprises a clip 51, a connecting piece 52 and a mounting piece 53, wherein one end part of the clip 51 is arranged on the mounting piece 53 through the connecting piece 52, the mounting piece 53 is connected with the ink tube, a clamping groove 521 is arranged on the connecting piece 52, and the clamping groove 521 is the second clamping part;

wherein, after the nib is extended out of the pen holder to the outside of the access hole, the clamping protrusion 151 is clamped in the clamping groove 521 and used for blocking the ink tube from retracting under the action of the spring.

Specifically, the first clamping portion of the elastic member 15 is a clamping protrusion 151 formed on the elastic member 15, and correspondingly, the clamping groove 521 formed on the pen clip 5 is matched with the clamping protrusion 151. When the nib is protruded to the outside of the barrel to be positioned, the locking protrusion 151 is locked in the locking groove 521 to keep the nib exposed to the outside of the barrel. In addition, the mounting member 53 may be provided on the ink tube, for example: the mounting member 53 may be over the ink tube or the clip 5 may be integrally injection molded with the ink tube.

Still further, in order to guide the clamping protrusion 151 to be clamped into the clamping groove 521 during the process of extending the pen tip, and correspondingly guide the clamping protrusion 151 to reset after the pen tip is retracted, the side portion of the connecting piece 52 is further provided with the clamping groove 521, the first guiding surface 522, the second guiding surface 523 and the third guiding surface 524;

the direction from the tail to the head of the pen holder is a first direction, and the direction from the outer wall of the pen holder to the clip 51 is a second direction;

along the second direction, the first guide surface 522, the clamping groove 521 and the third guide surface 524 are sequentially arranged;

the first guide surface 522 extends from the outer wall of the barrel obliquely toward the catching groove 521 in the first direction, the second guide surface 523 extends from the catching groove 521 obliquely toward the third guide surface 524 in the opposite direction, and the third guide surface 524 extends to the edge of the connecting piece 52 in the first direction.

Specifically, during the use, the pen tip extends out of the pen holder, the pen clip 5 moves along with the ink tube, during the movement of the pen clip 5, the clamping protrusion 151 is pressed to the side of the connecting piece 52 by the connecting piece 52, after the user presses the pen tip to the bottom, the distance that the pen tip extends out of the pen holder is the largest, and at this time, the clamping protrusion 151 is located behind the first guiding surface 522; then, the ink tube is retracted by the action of the spring by loosening the hand of the user, and the clamping protrusion 151 is guided by the first guiding surface 522 to be clamped into the clamping groove 521, so that the pen holder 5 can be blocked from moving continuously, and the pen point is kept outside the pen holder.

And in the process of pressing the pen again by the user, the pen point stretches out to the farthest distance outside the pen holder again, in the process, the clamping protrusion 151 is separated from the clamping groove 521 and moves to the upper third guide surface 524 through the second guide surface 523, after the user releases his hand, under the action of the spring, the clamping protrusion 151 slides on the third guide surface 524 and finally is separated from the connecting piece 52 to reset, and meanwhile, the ink tube is reset.

Because the elastic component 15 is reset by self elasticity, the clamping protrusion 151 is always clung to the connecting piece 52, and meanwhile, a stepped surface is formed among the first guide surface 522, the second guide surface 523 and the third guide surface 524, so that the elastic component 15 can only sequentially move in sequence through the first guide surface 522, the second guide surface 523 and the third guide surface 524, and further, the smoothness and the reliability of use are ensured.

Further, the side wall of the connecting member 52 is provided with a first guide surface 525, and the first guide surface 525 is provided between the catching groove 521 and the barrel and is arranged on the front side of the first guide surface 522 in the first direction; the first guide surface 525 is inclined in the second direction from the outer wall of the barrel toward the outside of the connecting member 52.

Specifically, after the first guide surface 525 contacts the locking protrusion 151 during the process of extending the nib from the barrel, the inclined first guide surface 525 can apply downward pressure to the locking protrusion 151, so that the locking protrusion 151 can smoothly move to the rear side of the first guide surface 522 to avoid tilting. In addition, the side wall of the connecting member 52 is provided with a second guide surface 526, and the second guide surface 526 is inclined toward the inside of the connecting member 52 in the first direction by the first guide surface 525. The second guiding surface 526 contacts with the clamping protrusion 151 first, so that the user can press smoothly during the process, and the user experience is improved.

Further, the second clamping parts are respectively arranged at two sides of the connecting piece 52; the elastic component 15 is provided with a first guiding groove 152, the first guiding groove 152 extends along the length direction of the pen holder, two sides of the first guiding groove 152 are provided with oppositely arranged clamping protrusions 151, the tail of the pen holder is provided with a notch 153 communicated with the first guiding groove 152, and the connecting piece 52 is slidably arranged in the first guiding groove 152.

Specifically, in order to ensure that the connecting piece 52 can slide smoothly relative to the elastic component 15 and simultaneously enable the clamping protrusion 151 to be matched with the clamping groove 521 in a reliable and accurate manner, the elastic component 15 is provided with the first guide groove 152 so that the connecting piece 52 slides in the first guide groove 152 in a guiding manner, and meanwhile, the clamping grooves 521 on two sides of the connecting piece 52 are matched with the clamping protrusions 151 on the corresponding side to achieve more reliable clamping positioning.

Still further, the pen holder is further provided with a second guiding groove 16, the pen holder 5 is provided with a guiding block 54, and the guiding block 54 is slidably arranged in the second guiding groove 16.

Specifically, the guide block 54 slides in the second guide groove 16 to further guide the pen clip 5, so as to ensure smooth sliding of the pen clip 5 with respect to the elastic member 15.

Still further, the elastic component 15 and the pen holder are of an integral structure, the pen holder is provided with a containing groove 17, and the elastic component 15 is of a board-mounted structure and is located in the containing groove 17.

Specifically, the elastic member 15 is located in the accommodating groove 17 under the condition of no stress, so that the overall appearance effect of the pen holder is better and more attractive. In addition, the elastic part 15 and the pen holder are of an integral structure, so that the processing, the production and the assembly are more convenient.

In a second embodiment, as shown in fig. 8 to 12, based on the above technical solution, optionally, the pressing writing instrument of this embodiment includes:

the sealing assembly 4, the sealing assembly 4 includes connecting tube 41 and seal sleeve 42, one end of connecting tube 41 has movable sealing part 411, there are connecting parts 412 on the sealing part 411, the sealing part 411 is used for covering the port of the seal sleeve 42 selectively, the connecting part 412 connects the seal sleeve 42;

wherein, the position of the inner wall of the pen holder 1 close to the access hole 11 is also provided with a positioning part 12, and the ink tube 3 is also provided with a mounting part 32;

the sealing assembly 4 is arranged in the pen holder 1, the sealing sleeves 42 of the connecting pipes 41 are sleeved on the ink tubes 3, the sealing sleeves 42 also abut against the positioning parts 12, and the springs 2 are positioned between the mounting parts 32 and the sealing sleeves 42;

in a state that the nib 31 is retracted into the inside of the access hole 11, the nib 31 is positioned in the sealing sleeve 42, and the sealing portion 411 is positioned between the nib 31 and the access hole 11 and covers the port of the sealing sleeve 42;

in a state where the nib 31 is protruded to the outside of the access hole 11, the sealing portion 411 is located at one side of the sealing sleeve 42.

Specifically, in the actual assembly process, the sealing sleeve 42 in the sealing assembly 4 is connected with the connecting portion 412 of the connecting tube 41, then the sealing sleeve 42 and the connecting tube 41 are sleeved outside the ink tube 3, the spring 2 is clamped between the mounting portion 32 and the sealing sleeve 42, finally the ink tube 3 and the sealing assembly 4 are installed in the pen holder 1, and the sealing sleeve 42 abuts against the positioning portion 12 in the pen holder 1, so that the assembly is completed.

For the push-type writing tool, the parts such as a pen cap and a push structure are correspondingly configured, the pen cap is generally mounted on the ink tube 3 to facilitate the user to push the pen cap to drive the ink tube 3 to move, the push structure is used for positioning the pen point 31 of the ink tube 3 after extending out, and the specific structural form can refer to the structure of the pen with the push function in the conventional technology, so that no limitation and no redundant description are provided herein.

In use, the nib 31 is retracted into the barrel 1 and positioned within the sealing sleeve 42 without using the pen, and at this time, the sealing portion 411 covers the port of the sealing sleeve 42, so that the exposed portion of the nib 31 is positioned in the relatively closed space formed by the sealing sleeve 42 and the sealing portion 411, and the nib 31 is dried. When a user needs to write, the ink tube 3 moves towards the direction of the access hole 11 by pressing the pen cap, the ink tube 3 drives the connecting tube 41 to slide in the pen holder 1 together, and the sealing sleeve 42 can not move due to the fact that the sealing sleeve 42 is matched with the positioning part 12 to realize positioning, and then the sealing sleeve 42 pulls the sealing part 411 to move so as to open and close the port of the sealing sleeve 42 through the connecting part 412, finally, the pen point 31 passes through the port of the sealing sleeve 42, the pen point 31 is exposed from the access hole 11, and the sealing sleeve 42 pulls the sealing part 411 to one side of the sealing sleeve 42 through the connecting part 412.

In the assembly process, the sealing assembly 4 can be assembled by only installing the connecting part 412 on the sealing sleeve 42, so that the assembly process can be effectively simplified; in the use process, the sealing sleeve 42 pulls the sealing part 411 to be opened through the connecting part 412, so that the outside of the sealing part 411 does not need to be guided, the locking caused by the guiding of the sliding groove can be effectively avoided, and the use reliability is further improved.

Further, the outer wall of the sealing sleeve 42 is provided with a protruding portion 421, and the protruding portion 421 abuts against the positioning portion 12.

Specifically, in order to conveniently install and position the sealing sleeve 42, a first step surface is formed in the barrel 1, the first step surface is arranged close to the access hole 11, and after the ink tube 3 and the sealing assembly 4 are installed in the barrel 1, the protruding portion 421 abuts against the first step surface.

Further, the connection portion 412 has a fitting hole 413, and the connection portion 412 is fitted to the boss 421 through the fitting hole 413.

Specifically, when the connecting tube 41 and the sealing sleeve 42 are assembled, the clamping hole 413 formed by the connecting portion 412 is clamped on the protruding portion 421, so that the connecting portion 412 and the sealing sleeve 42 are connected together. And the connecting pipe 41 and the sealing sleeve 42 are assembled in a clamping manner, so that the assembly efficiency can be improved more effectively and the assembly process can be simplified. In addition, the connection portion 412 is snapped onto the boss 421 on one side of the sealing sleeve 42, so that the connection portion 412 can easily pull the sealing portion 411 to one side of the sealing sleeve 42 to open the port of the sealing sleeve 42.

Preferably, the connection pipe 41, the sealing part 411 and the connection part 412 are of a unitary structure. Specifically, the sealing portion 411 and the connecting portion 412 on the connecting tube 41 are formed integrally, for example: can be processed by injection molding. In order to realize that the sealing part 411 can be movably linked relative to the connecting pipe 41, two opposite extending parts 414 are arranged at the end part of the connecting pipe 41 close to the access hole 11, a first flexible part 415 is arranged between the extending parts 414 and the sealing part 411, and a second flexible part 416 is arranged between the sealing part 411 and the connecting part 412.

Specifically, the connecting pipe 41 is formed by injection molding, and the injection molding material is generally plastic or other material with a certain elasticity, so that the first flexible portion 415 and the second flexible portion 416 can be formed by processing in a manner of local size narrowing, on one hand, the sealing portion 411 is reliably connected with the connecting pipe 41 and the connecting portion 412, and on the other hand, the first flexible portion 415 and the second flexible portion 416 can deform under the condition of being stressed and automatically reset when being stressed gradually reduced, so as to meet the requirement of movable connection of the sealing portion 411.

Further, in order to facilitate the ink tube 3 to drive the connecting tube 41 to slide in the pen holder 1, the other end portion of the connecting tube 41 is provided with a clamping portion 417, the ink tube 3 is further provided with a pushing portion 33, and the pushing portion 33 is used for abutting against the clamping portion 417 to push the connecting tube 41 to move relative to the pen holder 1.

Specifically, when the user presses the pen to move the ink tube 3 toward the direction of the access hole 11, the pushing portion 33 abuts against the engagement portion 417, so that the ink tube 3 drives the connecting tube 41 to move, and in the moving process of the connecting tube 41, the sealing sleeve 42 applies a force to the sealing portion 411 through the connecting portion 412, so that the first flexible portion 415 and the second flexible portion 416 are deformed, and finally the sealing portion 411 is separated from the port of the sealing sleeve 42 and moves to a position on one side of the sealing sleeve 42. The engagement means 417 and the pushing means 33 may be configured in a conventional manner, and are not limited thereto.

Since the stroke required for extending the pen tip 31 is large, the movement stroke of the connecting tube 41 is limited in order to avoid the flexible portion from being broken due to the excessive movement stroke of the connecting tube 41. For this reason, the engagement portion 417 is an elastic member disposed on the connection tube 41, a free end of the elastic member is configured to cooperate with the pushing portion 33, a limit protrusion 418 is disposed on an outer surface of the free end of the elastic member, and a limit hole 13 configured to cooperate with the limit protrusion 418 is disposed on a side wall of the pen holder 1; in a state where the sealing portion 411 is away from the port of the sealing sleeve 42 and is located at one side of the sealing sleeve 42, the limit projection 418 is caught in the limit hole 13.

Specifically, during the process that the ink tube 3 drives the connecting tube 41 to move towards the direction of the access hole 11, the pushing portion 33 will abut against the free end portion of the elastic member, at this time, the limiting protrusion 418 on the elastic member will abut against the inner wall of the pen holder 1, and the elastic member cannot be bent outwards due to the limitation of the inner wall of the pen holder 1, so that the pushing portion 33 can abut against the elastic member to drive the connecting tube 41 to move. When the limit protrusion 418 is moved and clamped into the position of the limit hole 13, the elastic member bends outwards, so that the free end of the elastic member is separated from the pushing portion 33. The pushing portion 33 continues to move along with the ink tube 3 and passes over the free end of the elastic member, and at this time, the connection tube 41 cannot continue to move due to the catching of the limit projection 418 in the limit hole 13.

Wherein the pushing portion 33 is a second step surface formed on the ink tube 3, and an edge of the second step surface forms a chamfer structure. Specifically, the chamfer structure of the second step surface can be in guiding fit with the free end of the elastic member, so that the pushing part 33 can smoothly pass through the elastic member, and further, the smoothness of pressing is ensured. In addition, the ink tube 3 may be of a variable diameter structure, in which the diameter of the ink tube 3 is small near the nib 31, and the diameter of the ink tube 3 is large far from the nib 31, so that a second stepped surface is formed at the intersection of the two. The diameter is changed, so that when the ink tube 3 drives the pen point 31 to retract, after the elastic member passes over the second step surface from the thicker part of the ink tube 3, the elastic member is not extruded by the wall of the thicker ink tube 3 and is elastically reset to separate from the limiting hole 13, and the connecting tube 41 can be reset along with the ink tube 3.

In order to enable the connection tube 41 to be reliably and effectively reset during retraction of the pen tip 31, the wall of the connection tube 41 is provided with a second guide groove 419, the wall of the ink tube 3 is provided with a second slider 34, and the second slider 34 is slidably disposed in the second guide groove 419. Specifically, the second guide groove 419 is matched with the second slide block 34, so that on one hand, the connecting pipe 41 and the ink tube 3 can slide smoothly relatively, and on the other hand, when the spring 2 drives the ink tube 3 to reset, the second slide block 34 is clamped at the end part of the second guide groove 419 to pull the connecting pipe 41 to move, and further effective resetting of the connecting pipe 41 is achieved. During the resetting process of the connecting tube 41, the first flexible portion 415 and the second flexible portion 416 are also elastically reset, so that the sealing portion 411 covers the port of the sealing sleeve 42.

Still further, the inner wall of the cartridge 1 is provided with a first guide groove 14 extending in the length direction, the outer wall of the connection pipe 41 is provided with a first slider 401, and the first slider 401 is slidably disposed in the first guide groove 14. Specifically, the connection pipe 41 is engaged with the first guide groove 14 by the first slider 401 during the movement to ensure smooth sliding. The outer surface of the connecting portion 412 is provided with a stopper 402, and the stopper 402 is also located in the first guiding groove 14. In this way, by means of the slider, the stopper and said first guide cooperating with each other, it is ensured that during assembly the operator guides the correct installation of the ink tube 3 and the connecting tube 41 via the first guide channel 14. As for the positioning portion 12, it may be an end surface of the first guide groove 14 near the access hole 11, and the corresponding protruding portion 421 is also located in the first guide groove 14 and abuts against an end portion of the first guide groove 14.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A push-type writing instrument, comprising:

2. The pressing writing instrument of claim 1, wherein the second engaging portion engages with the first engaging portion after the nib protrudes from the barrel to outside the access hole; after the nib is retracted into the pen holder from the outside of the access hole, the second clamping part and the first clamping part are mutually separated.

3. The pressing type writing instrument of claim 1, wherein the elastic member is disposed along a length direction of the pen holder, and the first catching portion is a catching protrusion formed on the elastic member;

4. A push-type writing instrument according to claim 3, wherein the side of the connecting member is further provided with the catching groove, the first guide surface, the second guide surface, and the third guide surface;

5. The pressing type writing instrument of claim 4, wherein a side wall of the connecting member is provided with a first guide surface which is provided between the catching groove and the barrel and is arranged on a front side of the first guide surface in the first direction; the first guide surface is inclined from the outer wall of the barrel toward the outside of the connecting piece in the second direction.

6. A pressing writing instrument as recited in claim 5, wherein the side wall of the connector is provided with a second guide surface that is inclined from the first guide surface toward the inside of the connector in the first direction.

7. The pressing type writing instrument according to any one of claims 3 to 6, wherein the second engaging portions are provided on both sides of the connecting member, respectively; the elastic component is provided with first guide way, first guide way is followed the length direction of pen holder extends, the both sides of first guide way are provided with the relative arrangement the joint is protruding, the afterbody of pen holder is provided with the intercommunication the breach of first guide way, the connecting piece slidable sets up in the first guide way.

8. The pressing writing instrument according to claim 1, wherein a positioning part is further arranged on the inner wall of the pen holder near the access hole, and a mounting part is further arranged on the ink tube;

the pressing type writing stationery further comprises:

9. A push-on writing instrument according to claim 8, wherein the outer wall of the sealing sleeve is provided with a protrusion which abuts against the positioning portion.

10. The pressing writing instrument of claim 8, wherein the other end of the connecting tube is provided with a locking portion, and the ink tube is further provided with a pushing portion for abutting against the locking portion to push the connecting tube to move relative to the pen holder.