Needle tube type refill assembly and writing pen

Abstract

The utility model belongs to the technical field of stationery, and particularly relates to a needle tube type refill assembly and a writing pen, which comprise a pen shell and a pen cap, a top cap is arranged at one end of the pen shell, a screwing end is arranged at the other end of the pen shell, a refill is arranged in the pen shell, a pen point is arranged at one end of the refill, a pen point is arranged on the pen point, and a metal ring is arranged at one end of the pen point. An insertion groove is formed in the end of the pen point, a locking ring is arranged in the insertion groove, end covers are arranged at the inner end and the outer end of the pen cap, and each end cover is specifically composed of a first assembly, a second assembly, a threaded connection end, a mounting groove, a penetrating opening, a limiting end, a connecting assembly and a contact end. Through the pen point, the metal ring, the insertion groove and the locking ring, the position of the pen point is limited, the pen point is prevented from retracting, through the pen shell, the pen refill, the pen cap, the end cover, the first assembly, the second assembly, the limiting end and the contact end, the whole structure is simple, the actual use effect can be guaranteed, the production process is simple, and large cost expenditure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, specifically to a needle-type pen refill assembly and a writing pen. Background Technology

[0002] A fine-tipped pen (also known as a technical pen refill) is a widely used writing instrument, especially suitable for occasions requiring fine writing and accurate drawing. Fine-tipped pens have a fine tip and are typically designed for drawing, detailed note-taking, or calligraphy. A fine-tipped writing pen is a type of pen used with fine-tipped pens and is widely used in the stationery industry.

[0003] The existing technology has the following shortcomings: In the prior art, application number 202223171427.7, a needle-type pen refill assembly and a writing pen are proposed. The pen refill assembly includes an ink cartridge assembly, which has a limiting platform located near the bottom. The needle-type pen tip is inserted into the bottom of the ink cartridge assembly and abuts against the lower side of the limiting platform. A through ink flow channel is formed inside the pen tip. The ball part is located in the ink flow channel and at the ink outlet end of the ink flow channel. The ball part has a portion extending out of the ink outlet end. The ink guide core includes a relay core and a guide wire. The relay core passes through the ink cartridge assembly and abuts against the upper side of the limiting platform. The guide wire passes through a perforation in the limiting platform and enters the ink flow channel. The bottom end of the guide wire contacts the ball part or has a gap with the ball part. An elastic element is sleeved on the outer periphery of the guide wire. The elastic element abuts against the ball part to apply a force that makes the ball part press against the inner wall of the ink outlet end. This pen refill assembly effectively prevents ink evaporation, enabling smooth writing and ensuring stable product preservation and usability.

[0004] The aforementioned needle-type pen refills still use the conventional installation method for the pen tip. Because the needle-type pen tip is thin and fragile, it is easy for the pen tip to retract when subjected to greater pressure or when it is dropped and hits the ground, affecting the writing experience. The installation stability of the needle-type pen refills can be optimized. At the same time, the overall structure of the writing pen is relatively complex, and the push-button type is also prone to damage during prolonged pressing, increasing the risk of damage. The production process is also more cumbersome and will greatly increase production costs. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a needle-type pen refill assembly and a writing pen to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a needle-type pen refill assembly and a writing pen, comprising a pen shell and a pen cap, wherein a top cap is provided at one end of the pen shell, a screw-on end is provided at the other end of the pen shell, a pen refill is provided inside the pen shell, a pen tip is provided at one end of the pen refill, a pen nib is provided at the pen tip, a metal ring is provided at one end of the pen nib, an insertion groove is provided at the end of the pen nib, a locking ring is provided in the insertion groove, and end caps are provided at the inner and outer ends of the pen cap;

[0007] The end cap is specifically composed of a first assembly, a second assembly, a threaded connection end, a mounting groove, a through opening, a limiting end, a connecting component, and a contact end. The mounting groove and through opening are formed between the first assembly and the second assembly, and the limiting end, the connecting component, and the contact end are integrally formed.

[0008] As a preferred technical solution of this utility model: the top cap and the screw-on end are both threadedly connected to the pen shell, and the pen tip is inserted into one end of the pen refill.

[0009] As a preferred technical solution of this utility model: the metal ring and the pen tip are integrally formed, the metal ring is inserted into the insertion groove and is connected to the pen tip, the locking ring is sleeved on the pen tip and inserted into the insertion groove, and the locking ring is in close contact with the metal ring.

[0010] As a preferred technical solution of this utility model: the pen cap is adapted to the pen shell, the pen cap is sleeved on the pen shell, the first assembly and the second assembly are both provided with threaded connection ends and are adapted to each other, and the first assembly and the second assembly have the same structure.

[0011] As a preferred technical solution of this utility model: the outer sides of the first assembly and the second assembly are provided with arc-shaped grooves, and the limiting end, connecting component and contact end are all made of rubber and are integrally formed.

[0012] As a preferred technical solution of this utility model: the connecting component is correspondingly snapped into the through hole, the connecting component is embedded in the mounting groove, and the connecting component is adapted to the mounting groove.

[0013] As a preferred technical solution of this utility model: the first assembly and the second assembly are combined with each other and tightened onto the pen cap through the threaded connection end.

[0014] Compared with the prior art, this utility model provides a needle-type pen refill assembly and a writing pen, which has the following beneficial effects:

[0015] 1. The needle-type pen refill assembly and writing pen, by setting a pen tip, a metal ring, an insertion groove and a locking ring, can restrict the position of the pen tip and prevent it from retracting when the pen tip touches the ground under great pressure or at an angle during writing, thus ensuring the subsequent writing experience.

[0016] 2. This needle-type pen refill assembly and writing pen, by setting up a pen shell, pen shell, pen refill, pen cap, end cap, first assembly, second assembly, limiting end, and contact end, the end cap can be disassembled to facilitate the connecting assembly to be locked in the through hole, ensuring the stability of the contact end and preventing it from falling off. After the pen cap is tightened, it ensures that the pen tip and the contact end are in close contact to avoid ink leakage. The overall structure is relatively simple, which can ensure the actual use effect. The production process is simple and avoids large cost expenditures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pen tip mounting structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the pen cap structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the end cap structure of this utility model.

[0021] In the diagram: 1. Pen casing; 2. Top cap; 3. Tightening end; 4. Pen cap; 5. Pen refill; 6. Pen tip; 7. Pen nib; 8. Metal ring; 9. Insertion groove; 10. Locking ring; 11. End cap; 1101. First assembly; 1102. Second assembly; 1103. Threaded connection end; 1104. Mounting groove; 1105. Through hole; 1106. Restricting end; 1107. Connecting component; 1108. Contact end. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment: a needle-type pen refill assembly and a writing pen, including a pen shell 1 and a pen cap 4, a top cap 2 is provided at one end of the pen shell 1, a screw-on end 3 is provided at the other end of the pen shell 1, a pen refill 5 is provided inside the pen shell 1, a pen tip 6 is provided at one end of the pen refill 5, a pen tip 7 is provided on the pen tip 6, a metal ring 8 is provided at one end of the pen tip 7, an insertion groove 9 is provided at the end of the pen tip 6, a locking ring 10 is provided in the insertion groove 9, and end caps 11 are provided at the inner and outer ends of the pen cap 4;

[0024] The screw-on end 3 ensures the stability of the pen refill 5 inside the pen case 1, and the pen cap 4 protects the pen tip 6 when not in use.

[0025] The end cap 11 is specifically composed of a first assembly 1101, a second assembly 1102, a threaded connection end 1103, a mounting groove 1104, a through hole 1105, a limiting end 1106, a connecting component 1107, and a contact end 1108. The mounting groove 1104 and the through hole 1105 are formed between the first assembly 1101 and the second assembly 1102, and the limiting end 1106, the connecting component 1107, and the contact end 1108 are integrally formed.

[0026] The mounting slot 1104 provides mounting space for the connecting component 1107.

[0027] In this embodiment, the top cap 2 and the screw-on end 3 are both threadedly connected to the pen shell 1, and the pen tip 6 is inserted into one end of the pen refill 5;

[0028] Specifically, the top cap 2 can seal the outer end of the pen shell 1.

[0029] In this embodiment, the metal ring 8 and the pen tip 7 are integrally formed. The metal ring 8 is inserted into the insertion groove 9 and connected to the pen head 6. The locking ring 10 is sleeved on the pen tip 7 and inserted into the insertion groove 9. The locking ring 10 is in close contact with the metal ring 8.

[0030] Specifically, the insertion slot 9 facilitates the installation of the locking ring 10, and the locking ring 10 ensures the stability of the pen tip 7.

[0031] In this embodiment, the pen cap 4 is adapted to the pen shell 1 and is sleeved on the pen shell 1. The first assembly 1101 and the second assembly 1102 are both provided with threaded connection ends 1103 and are adapted to each other. The first assembly 1101 and the second assembly 1102 have the same structure.

[0032] Specifically, the first assembly 1101 and the second assembly 1102 can be combined to form a circular structure, which is convenient for installation on the pen cap 4 through the threaded connection end 1103.

[0033] In this embodiment, arc-shaped grooves are provided on the outer sides of the first assembly 1101 and the second assembly 1102, and the limiting end 1106, the connecting component 1107 and the contact end 1108 are all made of rubber and are integrally molded.

[0034] Specifically, the contact end 1108 can contact the pen tip 7 to block the pen tip 7 and prevent ink leakage.

[0035] In this embodiment, the connecting component 1107 is correspondingly snapped into the through hole 1105, the connecting component 1107 is embedded in the mounting groove 1104, and the connecting component 1107 is adapted to the mounting groove 1104.

[0036] Specifically, the through-hole 1105 can lock the connecting component 1107, ensuring the stability of the limiting end 1106 and the contact end 1108.

[0037] In this embodiment, the first assembly 1101 and the second assembly 1102 are combined with each other and tightened onto the pen cap 4 through the threaded connection end 1103;

[0038] Specifically, the end cap 11 can be easily installed on the pen cap 4 via the threaded connection end 1103.

[0039] The working principle and usage process of this utility model are as follows: In actual use, the top cap 2 is screwed onto one end of the pen shell 1, the pen refill 5 is inserted into the pen shell 1, and the screw-on end 3 is placed on the end of the pen refill 5, so that the pen tip 7 extends out of the screw-on end 3. The screw-on end 3 is then tightened onto the other end of the pen shell 1. Finally, the pen cap 4 is placed on the pen shell 1 to complete the assembly of the writing pen. During writing, if the pen tip 7 touches the ground due to greater pressure or a corner, the metal ring 8 can restrict the position of the pen tip 7 to prevent it from retracting, thus ensuring the subsequent writing experience. The end cap 11 can be disassembled to allow the connecting component 1107 to be inserted into the through-hole 1105. The assembled end cap 11 can be screwed onto the pen cap 4 through the threaded connection end 1103, which can ensure the stability of the contact end 1108 and prevent it from falling off. After the pen cap 4 is tightened, it can ensure that the pen tip 7 and the contact end 1108 are in close contact, avoiding ink leakage. The overall structure is relatively simple, which can ensure the actual use effect. The production process is simple and avoids large cost expenditures.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A refill assembly and a writing pen, comprising a pen shell (1), a cap (4), a top cap (2) arranged at one end of the pen shell (1), and a screw end (3) arranged at the other end of the pen shell (1), characterized in that: The pen shell (1) is provided with a pen core (5), one end of the pen core (5) is provided with a pen head (6), the pen head (6) is provided with a pen nib (7), one end of the pen nib (7) is provided with a metal ring (8), the pen head (6) is provided with an insertion slot (9) at the end, the insertion slot (9) is provided with a locking ring (10), the end cap (11) is provided on the inner and outer ends of the pen cap (4). The end cap (11) is specifically composed of a first assembly (1101), a second assembly (1102), a threaded connection end (1103), a mounting slot (1104), a through hole (1105), a limiting end (1106), a connecting assembly (1107) and a contact end (1108). The mounting slot (1104) and the through hole (1105) are formed between the first assembly (1101) and the second assembly (1102). The limiting end (1106), the connecting assembly (1107) and the contact end (1108) are integrally formed.

2. A refill assembly and writing instrument according to claim 1, wherein: The top cap (2) and the screw end (3) are threadedly connected with the pen shell (1), and the pen head (6) is inserted into one end of the pen core (5).

3. The refill assembly according to claim 1, wherein: The metal ring (8) and the pen nib (7) are integrally formed, the metal ring (8) is inserted into the insertion slot (9) and is in communication with the pen head (6), the locking ring (10) is sleeved on the pen nib (7) and is inserted into the insertion slot (9), and the locking ring (10) is in close contact with the metal ring (8).

4. The refill assembly according to claim 1, wherein: The pen cap (4) is adapted to the pen shell (1), the pen cap (4) is sleeved on the pen shell (1), the first assembly (1101) and the second assembly (1102) are provided with threaded connection ends (1103) and are adapted to each other, and the first assembly (1101) and the second assembly (1102) are identical in structure.

5. The refill assembly according to claim 1, wherein: The first assembly (1101) and the second assembly (1102) are provided with arc-shaped grooves on the outer sides, and the limiting end (1106), the connecting assembly (1107) and the contact end (1108) are made of rubber and are integrally formed.

6. The refill assembly of claim 1, wherein: The connecting assembly (1107) is clamped in the through hole (1105), the connecting assembly (1107) is sunk into the mounting slot (1104), and the connecting assembly (1107) is adapted to the mounting slot (1104).

7. The refill assembly of claim 1, wherein: the refill assembly is a needle tube type refill assembly; and the writing instrument is a ballpoint pen. The first assembly (1101) and the second assembly (1102) are combined with each other and are screwed on the pen cap (4) through the threaded connection end (1103).

Images