CN217574646U

CN217574646U - Pen core and pen

Info

Publication number: CN217574646U
Application number: CN202221341260.1U
Authority: CN
Inventors: 颜鲁彬
Original assignee: Shanghai Kaco Industrial Co ltd
Current assignee: Shanghai Kaco Industrial Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-10-14
Anticipated expiration: 2032-05-18

Abstract

The application provides a pen core and a pen. The refill includes nib, connecting portion and refill body. The pen point comprises a pen point part and a main body part formed by extending one end of the pen point part, one end of the connecting part is connected with the main body part, and the other end of the connecting part is connected with the pen core tube body; the connecting part is made of plastic. The pen comprises a pen holder and the pen core.

Description

Pen core and pen

Technical Field

The application relates to the technical field of stationery, in particular to a pen core and a pen.

Background

The refill comprises a pen point and a refill tube body, ink is arranged in a cavity of the refill tube body, and the pen point is provided with a pen point portion. When the pen core is used for writing, the ink in the pen core cavity can flow out through the pen tip part of the pen head.

Generally, the pen point is made of metal, the pen core tube body is made of plastic, the end part of the pen point, which is far away from the pen point part, is a connecting part, and at least part of the connecting part is inserted into the pen core tube body, so that the connection between the pen point and the pen core tube body is realized. In order to ensure the reliability of the connection between the cartridge tube and the pen head and avoid ink leakage through the connection between the cartridge tube and the pen head, the connection part of the cartridge is generally set to be longer, which leads to the increase of the cost of the cartridge.

SUMMERY OF THE UTILITY MODEL

According to a first aspect of embodiments of the present application, a cartridge is provided. The pen core comprises a pen head, a connecting part and a pen core tube body;

the pen point comprises a pen point part and a main body part formed by extending one end of the pen point part, one end of the connecting part is connected with the main body part, and the other end of the connecting part is connected with the pen core tube body; the connecting part is made of plastic.

In one embodiment, the connecting portion includes a first connecting section and a second connecting section extending from the first connecting section, the first connecting section is sleeved outside the main body portion, and the second connecting section is inserted into the refill tube body.

In one embodiment, the first connection section is provided with an abutment surface facing away from the writing tip portion, and the cartridge tube body abuts against the abutment surface.

In one embodiment, the end of the second connecting section facing away from the first connecting section is provided with a guide structure, and the guide structure guides the second connecting section to be inserted into the refill tube body.

In one embodiment, the guiding structure comprises a guiding surface, and the guiding surface is a chamfer structure, a fillet structure, a spherical structure or a conical surface structure.

In one embodiment, the guiding structure is a groove arranged on the outer surface of the second connecting section, and the groove extends to the end surface of the second connecting section, which faces away from the first connecting section, so that the thickness of the end part of the second connecting section, which faces away from the first connecting section, is smaller than that of the end part of the second connecting section, which is close to the first connecting section.

In one embodiment, the first connection section has an outer diameter that gradually increases from an end near the nib portion to an end facing away from the nib portion; the outer diameter of the part of the pen core tube body adjacent to the first connecting section is gradually increased from one end close to the pen tip part to one end far away from the pen tip part, and the outer surface of the first connecting section and the outer surface of the part of the pen core tube body adjacent to the first connecting section are located on the same conical surface.

In one embodiment, the end of the pen point, which is far away from the connecting part, is provided with a ball hole, the pen point further comprises a ball which is positioned in the ball hole and can rotate in the ball hole, and the size range of a gap between the ball and the ball hole is 0.025 mm-0.035 mm.

In one embodiment, the refill tube body is provided with a step surface, and the step surface faces the pen point.

According to a second aspect of embodiments of the present application, there is provided a pen including a barrel and the cartridge described above.

According to the refill and the pen provided by the embodiment of the application, the main body part of the pen point is connected with the refill tube body through the connecting part, and the pen point is connected with the refill tube body by being inserted into the refill tube body relative to the pen point, so that the length of the pen point can be shortened; the connecting part is made of plastic, so that the cost of the plastic material is lower than that of metal, and the pen point pipe body are connected through the connecting part made of the plastic material, so that the length of the pen point made of the metal material is reduced, and the cost of the pen point can be reduced; and the flexibility of the connecting part made of plastic materials is larger, and the connecting part is not easy to damage in the process of connecting the pen point and the pen core tube body.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a cross-sectional view of a pen cartridge provided in an exemplary embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a cartridge provided in an exemplary embodiment of the present application;

fig. 3 is a side view of a cartridge provided in an exemplary embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience of description, and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The pen core and the pen according to the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

The embodiment of the application provides a pen core. As shown in fig. 1 to 3, the pen core 100 includes a pen tip 10, a connecting portion 20, and a pen core tube 30.

The pen point 10 comprises a pen point part 11 and a main body part 12 formed by extending one end of the pen point part 11, one end of the connecting part 20 is connected with the main body part 12, and the other end of the connecting part 20 is connected with the pen core tube body 30; the connecting portion 20 is made of plastic.

In the pen core 100 provided by the embodiment of the application, the main body 12 of the pen head 10 is connected with the pen core tube body 30 through the connecting part 20, and the pen head 10 is connected with the pen core tube body 30 by being inserted into the pen core tube body 30 relative to the pen head 10, so that the length of the pen head 10 can be shortened; because the connecting part 20 is made of plastic, the cost of the plastic is lower than that of metal, the pen core provided by the embodiment of the application realizes the connection between the pen head 10 and the pen core tube body 30 by adopting the connecting part made of plastic, so that the length of the pen head 10 made of metal is reduced, and the cost of the pen core can be reduced; and the connecting part 20 made of plastic has high flexibility, so that the connecting part 20 is not easy to be damaged when the connecting part 20 connects the pen point 10 with the pen core tube body 30.

The connection portion 20 has a hollow structure, and ink in the cartridge body 30 can enter the nib 10 through the connection portion 20 and flow out through the nib portion 11 of the nib 10.

In one embodiment, the pen tip 10 is made of metal. Therefore, the hardness of the pen point 10 is ensured to be larger, and the pen point is not easy to deform.

In one embodiment, the outer diameter of the nib 11 gradually decreases from the end near the connecting portion 20 to the end away from the connecting portion 20. In this way, after the refill is put into the pen holder, the pen point part 11 of the refill is convenient to expose out of the pen holder.

In one embodiment, the material of the connecting portion 20 is a polymer organic material. Thus, the toughness of the connection portion 20 can be increased, and the connection portion is less likely to be damaged.

In one embodiment, the connection portion 20 includes a first connection section 21 and a second connection section 22 extending from the first connection section 21, the first connection section 21 is sleeved outside the main body portion 12, and the second connection section 22 is inserted into the cartridge tube 30. Generally, the inner diameter of the pen core tube body 30 is larger than the outer diameter of the pen point 10, the first connecting section 21 is arranged to be sleeved outside the main body part 12 of the pen point 10, the second connecting section 22 is inserted into the pen core tube body 30, and compared with a scheme that the connecting section 20 is sleeved outside the pen core tube body 30, the maximum outer diameter of the pen core cannot be increased, the problem that the maximum outer diameter of the pen core is increased due to the adoption of the connecting section 20, and the pen core is not easy to install when being installed in a pen holder is solved.

Further, the outer diameter of the first connecting section 21 is larger than that of the second connecting section 22. Therefore, the insertion of the second connection section 22 into the cartridge tube 30 is facilitated, and the first connection section 21 is sleeved outside the main body 12 of the pen tip 10.

In one embodiment, the first connecting section 21 is an interference fit with the nib 10. By such arrangement, after the first connection section 21 is sleeved outside the pen point 10, the first connection section 21 is sleeved on the pen point 10 more firmly, so that the first connection section 21 is not easily separated from the pen point 10.

In one embodiment, the second connecting section 22 has the largest outer diameter and is in interference fit with the cartridge tube body 30. By such arrangement, after the second connecting section 22 is inserted into the pen core tube body 30, the second connecting section 22 is firmly clamped in the pen core tube body 30, and the second connecting section 22 is not easily separated from the pen core tube body 30.

In one embodiment, an end of the first connection section 21 facing away from the nib 11 is provided with an abutment surface 211, and the cartridge tube 30 abuts against the abutment surface 211. When the connection portion 20 is connected to the cartridge tube body 30, the second connection portion 22 is inserted into the cartridge tube body 30 until the end surface of the cartridge tube body 30 facing the nib portion 11 abuts against the abutment surface 211. By the arrangement, the length of the part of the connecting part 20 entering the pen core tube body 30 can be controlled, and the problems that the length of the part of the connecting part 20 entering the pen core tube body 30 is too large, the length of the part of the connecting part 20 connected with the pen point 10 is too small, and the connecting part 20 is connected with the pen point 10 insecurely are avoided; the problem that the connection part 20 and the refill tube body 30 are not firmly connected due to the fact that the length of the part, entering the refill tube body 30, of the connection part 20 is too small can also be avoided.

In one embodiment, the end of the second connection section 22 facing away from the first connection section 21 is provided with a guiding structure 221, and the guiding structure 221 guides the second connection section 22 to be inserted into the pen core tube body 30. By providing the guide structure 221 at the end of the second coupling section 22, the second coupling section 22 is more easily inserted into the cartridge body 30, and the second coupling section 22 is more easily coupled to the cartridge body 30.

In some embodiments, the guiding structure 221 includes a guiding surface 222, and the guiding surface 222 is a chamfer structure, a fillet structure, a spherical structure, or a conical surface structure. The guide surface 222 converts the movement of the second connecting section 22 relative to the cartridge tube body 30 into the inward movement of the second connecting section 22 relative to the cartridge tube body 30, so that the resistance of the second connecting section 22 entering the cartridge tube body 30 is reduced, and the connection between the second connecting section 22 and the cartridge tube body 30 is facilitated. In the illustrated embodiment, the guide surface 222 is a rounded structure.

In other embodiments, the guiding structure 221 is a groove 223 disposed on an outer surface of the second connecting section 22, and the groove 223 extends to an end surface of the second connecting section 22 facing away from the first connecting section 21, so that a thickness of an end portion of the second connecting section 22 facing away from the first connecting section 21 is smaller than a thickness of an end portion of the second connecting section 22 close to the first connecting section 21. Due to the fact that the thickness of the end, away from the first connecting section 21, of the second connecting section 22 is reduced due to the arrangement of the groove 223, the end, away from the first connecting section 21, of the second connecting section 22 is easier to be deformed in an interlocking manner, so that the second connecting section 22 is easier to enter the pen core tube body 30, and connection of the second connecting section 22 and the pen core tube body 30 is facilitated.

In one embodiment, the outer diameter of the first connection section 21 gradually increases from the end close to the nib 11 to the end away from the nib 11, the outer diameter of the portion of the cartridge tube body 30 adjacent to the first connection section 21 gradually increases from the end close to the nib 11 to the end away from the nib 11, and the outer surface of the first connection section 21 and the outer surface of the portion of the cartridge tube body 30 adjacent to the first connection section 21 are located on the same conical surface. With such an arrangement, the overall beauty of the pen refill 100 can be improved.

In one embodiment, the cartridge body 30 is provided with a step surface 31, and the step surface 31 faces the pen point 10. When the cartridge tube 30 is used in a knock pen by providing the step surface 31, the step surface 31 abuts against one end of a spring in a holder of the knock pen, thereby preventing the spring from moving in the holder.

In one embodiment, the cartridge further includes ink filled in the cartridge body 30.

In one embodiment, the end of the pen point 10 away from the connecting part 20 is provided with a ball hole, the pen point 10 further comprises a ball which is positioned in the ball hole and can rotate in the ball hole, and the size range of the gap between the ball and the ball hole is 0.025 mm-0.035 mm. Due to the arrangement, the ink discharging amount of the pen point 10 is moderate, and the phenomenon that the ink discharging amount of the pen point 10 is too large or too small to influence the use experience of a user is avoided. In some embodiments, the gap between the ball and the ball hole is 0.025mm, 0.028mm, 0.030mm, 0.032mm, 0.035mm, and the like in size.

The embodiment of the application also provides a pen, which comprises a pen holder and the pen core in any one of the above embodiments. The pen holder is internally provided with a hollow part which penetrates through the pen holder along the length direction, the pen core is arranged in the hollow part, the end part of the pen holder is provided with a hole, and the pen point part 11 of the pen point 10 is exposed out of the hole of the pen holder.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

The disclosure of this patent document contains material which is subject to copyright protection. The copyright is owned by the copyright owner. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the patent and trademark office official records and records.

Claims

1. The pen core is characterized by comprising a pen head, a connecting part and a pen core tube body;

2. A pen core according to claim 1, wherein the connecting part comprises a first connecting section and a second connecting section extending from the first connecting section, the first connecting section is sleeved outside the main body part, and the second connecting section is inserted into the pen core tube body.

3. A cartridge as in claim 2, wherein the first connection section is provided with an abutment surface facing away from the nib portion, the cartridge barrel abutting the abutment surface.

4. A pen refill according to claim 2, wherein an end of the second connecting section facing away from the first connecting section is provided with a guide formation which guides insertion of the second connecting section into the refill body.

5. A pen core according to claim 4, characterized in that the guiding structure comprises a guiding surface, and the guiding surface is a chamfer structure, a round angle structure, a spherical structure or a conical structure.

6. A pen refill according to claim 4, wherein the guide formation is a groove provided in the outer surface of the second connecting section, the groove extending to an end face of the second connecting section facing away from the first connecting section, such that the thickness of the end of the second connecting section facing away from the first connecting section is less than the thickness of the end of the second connecting section adjacent to the first connecting section.

7. A pen core according to claim 2, wherein the outer diameter of said first connection section gradually increases from an end near said writing tip portion to an end away from said writing tip portion; the outer diameter of the part, adjacent to the first connecting section, of the refill tube body is gradually increased from one end close to the pen point part to one end far away from the pen point part, and the outer surface of the first connecting section and the outer surface of the part, adjacent to the first connecting section, of the refill tube body are located on the same conical surface.

8. The pen core according to claim 1, wherein a ball hole is formed in an end part of the pen head, which is far away from the connecting part, the pen head further comprises a ball which is positioned in the ball hole and can rotate in the ball hole, and the size of a gap between the ball and the ball hole ranges from 0.025mm to 0.035mm.

9. A cartridge as in claim 1, wherein said cartridge body is provided with a step surface, said step surface facing said nib.

10. A pen comprising a barrel and a cartridge according to any one of claims 1 to 9.