CN217495669U - Pressing type self-sealing direct-liquid writing tool - Google Patents
Pressing type self-sealing direct-liquid writing tool Download PDFInfo
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- CN217495669U CN217495669U CN202220682703.7U CN202220682703U CN217495669U CN 217495669 U CN217495669 U CN 217495669U CN 202220682703 U CN202220682703 U CN 202220682703U CN 217495669 U CN217495669 U CN 217495669U
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Abstract
The utility model discloses a press-type self-sealing direct-liquid type writing tool, belonging to the technical field of writing and coating tools of cultural and educational products, comprising a front head and a pen body which are connected, wherein an ink chamber is arranged in the pen body, the rear end of the ink chamber is connected with a press mechanism, the front end of the ink chamber is provided with a gas-liquid exchanger, and a writing element is embedded in the gas-liquid exchanger and is communicated with the ink chamber; the front end of the front head is covered by the front end of the sealing element, the front end of the sealing element is provided with gaps so that a plurality of petal bodies are formed at the front end of the sealing element, and the writing element is kept in an open state when being pressed and extended but in a sealed state when being retracted; the front end of the gas-liquid exchanger is provided with a vent hole, and the rear end of the sealing piece extends to the vent hole of the gas-liquid exchanger.
Description
Technical Field
The utility model belongs to the technical field of the coating instrument is write to the stationery and education articles for use, concretely relates to press type self sealss direct liquid formula writing instrument.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The direct-liquid type pen as an important writing tool has the characteristics of fluent writing, stable and uniform stitches, full use of ink and the like. Writing instruments are classified into snap-cap type and knock-type writing instruments, which are applied to different writing purposes and ink types, respectively, from the viewpoint of structure. The pressing type writing tool does not need a separate pen cap, and can be used by pressing to draw out the core during use, so that the writing tool is more convenient and is widely applied.
Common pressing formula direct-liquid formula writing instrument in market, because the refill structure is special, nib and refill vent structure are in open state and communicate with each other with the outside air, in storage and transportation, the ink volatilizees from nib and vent hole easily, leads to the nib dry to write not go out the china ink or the ink in china ink storehouse reduces because of volatilizing the back. Therefore, the requirements on the use of ink and the design of the pen point are high, for example, the ink with high viscosity and difficult volatilization is required to be adopted, a spring needs to be added in the pen point, the ball is extruded by the spring to form sealing with the bowl opening of the pen point, and the like, the selection range of the ink is reduced due to the limitations, the structure of the pen is too complex, the cost is increased, and the large-scale production is not facilitated.
The inventor finds that although similar products are sealed for the pen core in the current market, the pen core is only sealed at the pen point position, due to the limitation of the sealing structure, the ventilation structure design of the product is limited, the ventilation hole can only be arranged at the pen point accessory, and the sealing device can only realize the sealing of the ventilation hole, so that the ink leakage risk of the product is increased.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a press type self sealss direct liquid formula writing instrument, this writing instrument can the air vent of effectual protection nib and refill, and the ink that reduces nib and refill air vent department volatilizees, improves the reliability of refill.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
in a first aspect, the utility model provides a pressing type self-sealing direct liquid type writing tool, which comprises a front head and a pen body which are connected, wherein an ink chamber is arranged in the pen body, the rear end of the ink chamber is connected with a pressing mechanism, the front end of the ink chamber is provided with a gas-liquid exchanger, and a writing element is embedded in the gas-liquid exchanger and is communicated with the ink chamber; the front end of the front head is covered by the front end of the sealing element, the front end of the sealing element is provided with gaps so that a plurality of petal bodies are formed at the front end of the sealing element, and the writing element is kept in an open state when being pressed and extended but in a sealed state when being retracted; the front end of the gas-liquid exchanger is provided with a vent hole, and the rear end of the sealing element extends to the vent hole of the gas-liquid exchanger.
As a further technical scheme, the outer side of the vent hole is communicated with air, and the inner side of the vent hole is communicated with the gas-liquid exchanger.
As a further technical scheme, the rear end of the gas-liquid exchanger is provided with a transverse slit with gradually changed width, and the width of the transverse slit is 0.1mm to 0.5 mm.
As a further technical scheme, the gas-liquid exchanger is provided with longitudinal thin slits which penetrate through the front part and the rear part, and the width of the longitudinal thin slits is set to be 0.05mm to 0.3 mm.
As a further technical scheme, the depth of the longitudinal fine seam is set to be 0.10mm to 0.80 mm.
As a further technical scheme, the sealing element is attached to the inner wall of the front head, the rear end of the sealing element is provided with a sealing rib, and the sealing rib is in interference fit with the opening of the ink bin.
As a further technical scheme, the number of the petal bodies is two or more, and the number of the gaps is one or more.
As a further technical scheme, the width of the gap is less than or equal to 0.20 mm.
As a further technical scheme, a spring seat is arranged on the inner side of the sealing piece, and the elastic element is supported between the spring seat and the front end of the gas-liquid exchanger.
As a further technical scheme, a first pressing piece is arranged at the rear end of the pen body, the first pressing piece is sleeved on a second pressing piece, and the second pressing piece is connected with a pressing mechanism.
Above-mentioned the utility model has the advantages as follows:
the writing tool of the utility model is provided with a sealing element, the front end of the sealing element is provided with a gap, so that a plurality of petal bodies are formed at the front end of the sealing element, and the petal bodies are naturally closed to form a closed space to seal the pen head and the air vent under the state that the pressing mechanism retracts and resets; when the writing element extends out of the front end, the flap body is completely opened, and the vent hole of the pen core can be communicated with the air outside the pen body to perform writing ventilation.
The utility model discloses a writing tool sets up the gas-liquid exchanger, and the outside communicates with each other with the air through the air vent, and the inboard is connected to the china ink storehouse, can realize writing the gas-liquid exchange of in-process, and then cancel cotton core, and direct filling ink increases the length of writing of product.
The utility model discloses a writing tool, it is suitable for straight liquid formula product, and it sets up the air vent at gas-liquid exchanger's front end, and the sealing member front end is with the cladding of front end, and the sealing member rear end extends to air vent department, adopts such structure, and the nib can be kept away from to the air vent, and the sealing member then can seal simultaneously nib and refill air vent, reduces the requirement of product to ink and nib to reduction in production cost improves the reliability of refill.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic view of a writing instrument of the present invention;
FIG. 2 is a schematic front view of the seal of the present invention;
FIG. 3 is a schematic side view of the seal of the present invention;
FIG. 4 is a schematic view of the writing instrument seal of the present invention forming an enclosed space;
fig. 5 is a schematic view of the opened state of the flap body of the sealing element of the present invention;
FIG. 6 is a schematic view of the writing element of the present invention extending beyond the front end;
FIG. 7 is a schematic view of a gas-liquid exchanger according to the present invention;
FIG. 8 is a schematic side view of the gas-liquid exchanger of the present invention;
FIG. 9 is a cross-sectional view of the gas-liquid exchanger of the present invention;
in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
the pen comprises a writing element 1, a front head 2, a sealing element 3, a pen body 4, an air-liquid exchanger 5, an ink cabin 6, an air vent 7, a pressing mechanism 8, a first pressing piece 9, a second pressing piece 10, an elastic element 11, a sealing rib 12, a gap 13, a valve body 14, a sealed space 15, a spring seat 16, a transverse slit 17 and a longitudinal slit 18.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In a typical embodiment of the present invention, as shown in fig. 1, a press-type self-sealing direct-liquid writing instrument is provided, which includes:
a writing element 1 for writing applications;
the front end 2 is provided with and supports the sealing element 3, and the rear end is connected with the pen body 4;
a sealing member 3 for sealing the writing element 1 and the ventilation hole 7;
a pen body 4 connected with the front head 2 and the pressing mechanism 8;
the outer side of the gas-liquid exchanger 5 is communicated with air through a vent hole 7, and the inner side of the gas-liquid exchanger is connected to the ink chamber 6, so that gas-liquid exchange in the writing process is realized;
an ink tank 6 for storing ink;
the outer side of the air vent 7 is communicated with air, and the inner side of the air vent is communicated with the gas-liquid exchanger, so that air exchange in the writing process is realized;
the pressing mechanism 8 is matched with the first pressing piece 9, the second pressing piece 10 and the elastic element 11 to realize axial reciprocating motion of core discharging and core returning of the pen core during pressing;
and the spring seat 16 is used for supporting the elastic element 11 to realize the resetting of the pen core.
In the writing tool, the front head 2 is located at the front end, the pen body 4 is located at the rear end, the front head and the pen body are connected to form an integral accommodating and supporting main body, and the length of the front head is generally smaller than that of the pen body, but the arrangement mode is not limited to the arrangement mode.
In this embodiment, the definition of the front end and the back end is: the pen body is used as a reference, the pressing mechanism is arranged at the rear end, and the pen body is arranged at the front end.
The front head 2 accommodates the writing element 1, the seal 3, the elastic element 11, the spring seat 16; the writing element, the gas-liquid exchanger and the ink chamber form a pen core, the pen body 4 contains the ink chamber 6, the pressing mechanism is positioned at the rear end of the pen body 4, and the pressing mechanism can control the reciprocating motion of the pen core so as to extend or retract the writing element into the front head.
The front head 2 and the pen body 4 can be connected through threads, and the connection and the separation of the front head and the pen body can be realized by screwing one of the front head and the pen body.
The first pressing part is sleeved on the second pressing part, the first pressing part is positioned at the end, the second pressing part is matched with the pressing mechanism, the pressing mechanism is matched with the ink bin, and when the first pressing part is pressed, the writing element is driven by the ink bin to stretch; in this embodiment, the pressing mechanism, the first pressing member and the second pressing member are all of the prior art, and are not described herein again.
The back end of the ink chamber 6 is connected with a pressing mechanism 8, the front end of the ink chamber is provided with an air-liquid exchanger 5, the air-liquid exchanger 5 is sleeved on the periphery of the writing element 1, and the writing element 1 is embedded into the air-liquid exchanger and communicated with the ink chamber.
The front end of the front head 2 is provided with a spring seat 16, the elastic element 11 can be a spring, and the elastic element is supported between the spring seat and the front end of the gas-liquid exchanger to play a role of resetting.
The front end of the gas-liquid exchanger 5 is provided with a vent hole 7 for gas-liquid exchange during writing.
The sealing member 3 is disposed on the inner side wall of the front head 2, and is engaged with the front end of the front head to maintain the writing element in an open state when the writing element is pushed out but in a sealed state when retracted.
The sealing element 3 is cylindrical, the sealing element is arranged by being attached to the inner wall of the front head, and the front end of the sealing element covers the front end of the front head; the front end of the sealing element is provided with a gap 13, the gap is arranged to enable the plane of the front end of the sealing element to form a plurality of petals 14, and under the state that the pressing mechanism retracts and resets, the petals 14 are naturally closed to form a closed space 15 for sealing the pen point and the vent hole, as shown in figure 4.
When the first pressing piece 9 is pressed, the flap body 14 is gradually opened under the pushing of the writing element 1, see fig. 5, finally the writing element 1 exceeds the front head 2, at the moment, the flap body 14 is completely opened, the vent hole 7 of the pen core can be communicated with the air outside the pen body from the opened flap body, and writing ventilation can be carried out, see fig. 6.
The number of the lobes 14 may be two or more, and correspondingly, the gap is set to be one or more, for example, in the embodiment, the gap 13 is a cross gap, that is, four lobes are formed; of course, in alternative embodiments, the slot 13 may be a m-shaped slot, a Y-shaped slot, a T-shaped slot, a straight slot, etc., as long as the requirement that a flap be formed for the writing element to extend is met.
The slit 13 may be formed during injection molding or may be formed by machining after injection molding.
When the valve is specifically arranged, the width of the gap 13 is less than or equal to 0.20mm, and the sealing performance of the valve body after being closed is ensured.
In this embodiment, the front end of the sealing member 3 is made of a soft material, so that the flap body of the sealing member can be more conveniently closed and opened.
A spring seat 16 is correspondingly arranged on the inner side of the sealing member 3 to support the spring so as to realize the reciprocating of the refill. The spring holder and the sealing element can be arranged into an integral type, the sealing element is made of two materials through composite injection molding, the outer side portion of the sealing element is made of a thermoplastic elastomer through injection molding, and the inner side spring holder portion of the sealing element is made of a plastic material through injection molding.
The rear end of the sealing element 3 extends to a vent hole at the front end of the gas-liquid exchanger, and the sealing element can seal the vent hole; the rear end of the sealing element 3 is provided with a sealing rib 12 which is in interference fit with the opening of the ink chamber 6 to realize sealing.
The sealing rib may be annularly arranged on the inner wall of the rear end of the sealing member.
Specifically, the sealing element 3 comprises a cylindrical fixing part, the cylindrical fixing part is attached to the inner wall of the front head, and the rear end of the cylindrical fixing part extends to the gas-liquid exchanger; the front end of the cylindrical fixing part is connected with the sealing part, and the cylindrical fixing part and the sealing part are in smooth transition connection and gradually transit to the front end of the front head.
The seal portion is of a flat type, which can close the front end of the front end, and the seal portion is provided with the aforementioned slit 13 to facilitate opening or closing.
In a preferred embodiment, the sealing portion and the cylindrical fixing portion are of a unitary construction, i.e. the sealing member as a whole seals the writing element and the vent hole.
In the writing tool, the air pressure balance of the ink chamber in the writing process is realized through the arrangement of the air-liquid exchanger 5.
The rear end of the gas-liquid exchanger 5 is provided with a transverse slit 17 with gradually changed width, and the width of the transverse slit can be set to be 0.1mm to 0.5 mm.
The gas-liquid exchanger 5 is further provided with longitudinal slits 18 extending through the front and rear, and the width of the longitudinal slits may be set to 0.05mm to 0.3 mm. The depth of the longitudinal slit may be set to 0.10mm to 0.80 mm.
When the writing tool is used for writing, the ink flows out of the writing element 1, negative pressure is formed in the ink chamber 6 along with the continuous reduction of the ink, and the air vent 7 of the gas-liquid exchanger 5 is communicated with the outside air, so the outside air passes through the air vent, is buffered by the transverse slit 17 and finally enters the ink chamber through the longitudinal slit 18, and the air pressure balance in the ink chamber is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A press-type self-sealing direct-liquid type writing tool is characterized by comprising a front head and a pen body which are connected, wherein an ink cabin is arranged in the pen body, the rear end of the ink cabin is connected with a press mechanism, an air-liquid exchanger is arranged at the front end of the ink cabin, and a writing element is embedded in the air-liquid exchanger and is communicated with the ink cabin; the front end of the front head is covered by the front end of the sealing element, the front end of the sealing element is provided with gaps so that a plurality of petal bodies are formed at the front end of the sealing element, and the writing element is kept in an open state when being pressed and extended but in a sealed state when being retracted; the front end of the gas-liquid exchanger is provided with a vent hole, and the rear end of the sealing piece extends to the vent hole of the gas-liquid exchanger.
2. The press-type self-sealing direct liquid writing instrument according to claim 1, wherein the air vent is communicated with air on the outside and with an air-liquid exchanger on the inside.
3. The press-type self-sealing direct liquid writing instrument according to claim 1, wherein the rear end of the gas-liquid exchanger is provided with a transverse slit with gradually changed width, and the width of the transverse slit is 0.1mm to 0.5 mm.
4. The press-type self-sealing direct-liquid writing instrument according to claim 1 or 3, wherein the gas-liquid exchanger is provided with longitudinal slits extending through the front and rear portions, and the width of the longitudinal slits is set to 0.05mm to 0.3 mm.
5. The press-type, self-sealing direct liquid writing instrument of claim 4, wherein the longitudinal slit is set to a depth of 0.10mm to 0.80 mm.
6. The press-type self-sealing direct liquid type writing instrument as claimed in claim 1, wherein the sealing member is arranged to be attached to the inner wall of the front head, and a sealing rib is arranged at the rear end of the sealing member and is in interference fit with the opening of the ink tank.
7. The press-type self-sealing direct liquid writing instrument according to claim 1, wherein the number of the petals is two or more, and the gap is provided with one or more.
8. The press-type self-sealing direct liquid writing instrument according to claim 1, wherein the width of the gap is less than or equal to 0.20 mm.
9. The press-type self-sealing direct liquid writing instrument according to claim 1, wherein a spring seat is provided inside the sealing member, and the elastic member is supported between the spring seat and the front end of the gas-liquid exchanger.
10. The press-type self-sealing direct liquid type writing instrument as claimed in claim 1, wherein the rear end of the pen body is provided with a first press member, the first press member is sleeved on a second press member, and the second press member is connected with the press mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682703.7U CN217495669U (en) | 2022-03-25 | 2022-03-25 | Pressing type self-sealing direct-liquid writing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682703.7U CN217495669U (en) | 2022-03-25 | 2022-03-25 | Pressing type self-sealing direct-liquid writing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217495669U true CN217495669U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220682703.7U Active CN217495669U (en) | 2022-03-25 | 2022-03-25 | Pressing type self-sealing direct-liquid writing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217495669U (en) |
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2022
- 2022-03-25 CN CN202220682703.7U patent/CN217495669U/en active Active
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