CN218906738U

CN218906738U - Recyclable pen refill

Info

Publication number: CN218906738U
Application number: CN202222835671.2U
Authority: CN
Inventors: 盛美萍; 彭焕然
Original assignee: Ningbo Research Institute of Northwestern Polytechnical University
Current assignee: Ningbo Research Institute of Northwestern Polytechnical University
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-04-25
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to a recyclable pen refill, which comprises a pen refill body, a fiber rod, an ink storage tube and a rubber plug, wherein the ink storage tube is connected inside the pen refill body, the fiber rod is inserted in the ink storage tube, one end of the fiber rod is exposed out of the pen refill body, the pen refill body is connected with the rubber plug for sealing the ink storage tube at one end far away from the fiber rod, the ink storage tube is used for storing ink, and the fiber rod is supplied with ink by utilizing a capillary principle, so that long-time smooth ink supply can be realized, unimpeded ink supply in a gravity-free environment can be realized, the ink can be injected into the rubber plug through an injector after the ink is used up, the recycling is realized, and the use cost is reduced; the ink filling device can fill ink only through one rubber plug, has a simple integral structure, and greatly reduces the production cost; the technical problems of complex structure and high cost of the pen refill capable of being recycled in the prior art are solved.

Description

Recyclable pen refill

Technical Field

The utility model relates to the technical field of stationery, in particular to a recyclable pen refill.

Background

The pen refill is widely applied to daily life, study and office as a writing tool, and comprises a pen refill tube and a pen refill head, wherein the pen refill tube and the pen refill head are connected through threads, writing liquid is filled in the pen refill tube, steel balls are filled in the pen refill head, and when writing, the liquid in the pen refill tube slowly flows out through the steel balls at the front end of the pen refill head, so that the aim of writing is fulfilled. At present, ink is often used as a writing material in the pen refill, and when the ink in the pen refill is used up, the pen refill needs to be replaced, and the replacement of the pen refill wastes limited earth resources, aggravates environmental pollution and increases the use cost of a user. Chinese patent CN114261232a discloses a recyclable neutral pen core, which is provided with two pen core tubes, and ink is absorbed at the second pen core tube by the combined action of a damping spring, a driving plate and a one-way valve, so as to achieve the purpose of recycling; another chinese patent CN114290837a discloses a neutral pen refill capable of adding ink, which realizes stable ink supply by arranging an ink adding component and an air pressure balancing component at the end cover of the tail part of the ink storage tube; however, both types of recyclable cartridges have common disadvantages: the complicated structure results in an increase in cost.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the recyclable pen refill which has a simple structure and low cost.

In order to solve the technical problems, the utility model provides a recyclable pen refill, which comprises a pen refill body, a fiber rod, an ink storage tube and a rubber plug, wherein the ink storage tube is connected inside the pen refill body, the fiber rod is inserted into the ink storage tube, one end of the fiber rod is exposed out of the pen refill body, and one end, far away from the fiber rod, of the pen refill body is connected with the rubber plug for sealing the ink storage tube.

After adopting the structure, the recyclable pen refill has the following advantages: the ink storage tube is used for storing ink, and is used for supplying ink to the fiber rod by utilizing a capillary principle, so that the long-time smooth ink supply and the unobstructed ink supply under the gravity-free environment can be realized, and after the ink is used up, the ink can be inserted into the rubber plug through the injector for injecting ink, thereby realizing the recycling and reducing the use cost; the utility model can realize ink injection by only one rubber plug, has simple integral structure and greatly reduces the production cost.

As an improvement, the ball pen further comprises a ball and a ball seat, wherein a first through hole is formed in the ball seat along the axial direction, the ball is rotationally connected to one end of the ball seat, the ball is positioned in the first through hole, a part of the ball is exposed out of the ball seat, the other end of the ball seat is connected with the pen core body, one end of the fiber rod extends into the first through hole, and a gap is reserved between one end of the fiber rod and the ball; by adopting the structure, the ball is used as a pen point for writing, the fiber rod supplies ink for the ball through the capillary principle, the gap between the fiber rod and the ball can prevent the abrasion of the fiber rod caused by the rotation of the ball during writing, the service life is prolonged, in addition, the ball made of high-strength materials can be selected to match with a high-precision ball seat, the friction between the ball and paper is reduced, the service life of the ball and the ball seat is greatly prolonged, smooth writing can be realized, and the use experience is improved.

As an improvement, one end of the fiber rod facing the ball is a concave spherical surface, and the spherical end of the fiber rod and the ball are arranged at the same center; by adopting the structure, the arrangement of the concentric spheres can keep the straight line distance from the fiber rod to the ball to be consistent, so that synchronous and stable ink supply is realized.

As an improvement, the size of the gap ranges from 0.01mm to 0.08mm; with such a structure, if the gap is too small, the fiber rod is likely to touch the balls to cause abrasion, and if the gap is too large, the ink cannot be supplied to the balls by utilizing the capillary principle.

As an improvement, a limiting structure for preventing the fiber rod from moving towards the ball direction is arranged on the inner wall of the first through hole, the limiting structure comprises an annular protrusion arranged on the inner wall of the first through hole, the inner wall of the first through hole close to one end of the ball seat is a first conical surface, the inner diameter of the first conical surface gradually increases towards the direction close to the refill body, the ball center of the ball is positioned between the annular protrusion and the first conical surface, the inner diameter of the annular protrusion is smaller than the diameter of the ball, the minimum inner diameter of the first conical surface is smaller than the diameter of the ball, and the ball is embedded between the first conical surface and the annular protrusion; by adopting the structure, the fiber rod is limited by the limiting mechanism, the fiber rod is prevented from moving towards the ball direction to be in contact with the ball, in addition, the limiting mechanism comprises an annular bulge, the annular bulge not only can limit the fiber rod, but also can realize stable connection between the ball seat and the ball through cooperation with the first conical surface, and the ball can be enabled to rotate more smoothly to realize smooth writing.

As an improvement, the annular bulge is positioned between the fiber rod and the center of the ball, the inner diameter of the annular bulge is smaller than the outer diameter of the fiber rod, the end face, facing the pen core body, of the annular bulge is a second conical surface, and the inner diameter of the second conical surface gradually increases towards the direction away from the ball; by adopting the structure, the fiber rod is avoided through the second cone, the situation that the distance between the fiber rod and the ball is too large to supply ink normally due to annular protrusion is avoided, and in addition, when the fiber rod and the ink storage tube are loosened to cause the fiber rod to move towards the ball direction, the inner diameter of the annular protrusion is smaller than the outer diameter of the fiber rod, so that the fiber rod can be propped against the second cone, the second cone can play a guiding role, and the fiber rod is prevented from shifting left and right.

As an improvement, a flange is arranged on the rubber plug and on the peripheral wall of one end far away from the pen core body along the circumferential direction, the rubber plug is inserted into the pen core body, and the flange is propped against the end part of the pen core body; by adopting the structure, the flange limits the rubber plug, so that the rubber plug can be prevented from being excessively plugged into the pen refill body.

As an improvement, an end cover is detachably connected to one end, far away from the fiber rod, of the refill body; by adopting the structure, the end cover plays a role in protecting the pen core body and the rubber plug, and can further ensure the tightness.

As an improvement, one end face, which is arranged on the end cover and is close to the rubber plug, is propped against the end face of the rubber plug; by adopting the structure, the end cover can compress the rubber plug towards the direction of the pen core body, and the sealing performance of the rubber plug is further improved.

As an improvement, one end of the fiber rod, which is inserted into the ink storage tube, is conical; with this structure, one end of the fiber rod is tapered to facilitate insertion into the ink reservoir.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a partial enlarged view of the portion a in fig. 1.

Fig. 3 is a partial enlarged view of the portion B in fig. 1.

Reference numerals: 1. a ball; 2. a bead seat; 3. a cartridge body; 4. a fiber rod; 5. an ink storage tube; 6. a rubber stopper; 7. a first through hole; 8. a gap; 9. an annular protrusion; 10. a first conical surface; 11. a second conical surface; 12. a flange; 13. an end cap.

Detailed Description

The recyclable cartridge according to the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a pen core capable of being recycled comprises a ball 1, a ball seat 2, a pen core body 3, a fiber rod 4, an ink storage tube 5 and a rubber plug 6, wherein a first through hole 7 is axially formed in the ball seat 2, the ball 1 is rotationally connected to one end of the ball seat 2, namely, the ball 1 is rotationally connected to one end inside the ball seat 2, the ball 1 is positioned in the first through hole 7, a part of the ball 1 is exposed out of the ball seat 2 for writing, and the other end of the ball seat 2 is connected with the pen core body 3; as shown in fig. 1, the ball 1 is positioned at the lower end of the ball holder 2, i.e. the nib part, and the upper end of the ball holder 2 is connected with the lower end of the pen core body 3; the ink storage tube 5 is connected inside the pen core body 3, the fiber rod 4 is inserted in the ink storage tube 5, one end of the fiber rod 4 extends into the first through hole 7, a gap 8 is reserved between one end of the fiber rod 4 and the ball 1, the width of the gap 8 only needs to ensure that the fiber rod 4 can supply ink for the ball 1 by utilizing the capillary principle, the size range is 0.01mm to 0.08mm, and the specific size is not repeated here; in this embodiment, the ink storage tube 5 is a fiber ink storage tube, as shown in fig. 1, the upper end of the fiber rod 4 is inserted into the ink storage tube 5, the lower end extends into the first through hole 7, and one end of the fiber rod 4 inserted into the ink storage tube 5 is conical, i.e. the upper end of the fiber rod 4 is conical; as shown in fig. 2, the end of the fiber rod 4 facing the ball 1 is a concave spherical surface, so that the gap 8 is bowl-shaped, and the spherical end of the fiber rod 4 and the ball 1 are arranged concentrically.

As shown in fig. 2, a limiting structure for preventing the fiber rod 4 from moving towards the ball 1 is arranged on the inner wall of the first through hole 7, the limiting structure comprises an annular protrusion 9 arranged on the inner wall of the first through hole 7, the inner wall of the first through hole 7 close to one end of the ball seat 2 is a first conical surface 10, namely, the inner wall at the opening of the lower end of the first through hole 7 is the first conical surface 10, the inner diameter of the first conical surface 10 gradually increases towards the direction close to the refill body 3, the center of the ball 1 is positioned between the annular protrusion 9 and the first conical surface 10, the inner diameter of the annular protrusion 9 is smaller than the diameter of the ball 1, the minimum inner diameter of the first conical surface 10 is smaller than the diameter of the ball 1, in other words, the inner diameter of the uppermost end of the first conical surface 10 is the same as the inner diameter of the first through hole 7, the inner diameter of the first conical surface 10 gradually decreases from top to bottom, the lowermost end of the first conical surface 10 is smaller than the diameter of the ball 1, the annular protrusion 9 is positioned above the first conical surface 10, the ball 1 is embedded between the first conical surface 10 and the annular protrusion 9, the outer periphery of the ball 1 is respectively abutted against the first conical surface 10 and the annular protrusion 9, and the inner periphery 9 is abutted against the inner chamfer of the arc-shaped end face 1.

As shown in fig. 2, the annular protrusion 9 is located between the fiber rod 4 and the center of the ball 1, the inner diameter of the annular protrusion 9 is smaller than the outer diameter of the fiber rod 4, one end surface of the annular protrusion 9, which is close to the pen core body 3, is a second conical surface 11, and the inner diameter of the second conical surface 11 gradually increases away from the ball 1, that is, the upper end surface of the annular protrusion 9 is the second conical surface 11, it should be noted that, the second conical surface 11 may extend onto the inner peripheral wall of the annular protrusion 9, that is, the edge between the upper end surface of the annular protrusion 9 and the inner peripheral wall is provided with a chamfer, that is, the second conical surface 11, and when the fiber rod 4 is not separated from the ink storage tube 5, the lower end of the fiber rod 4 is located above the second conical surface 11, and when the fiber rod 4 is moved towards the ball 1 due to the release of the fiber rod 4 and the ink storage tube 5, the inner diameter of the annular protrusion 9 is smaller than the fiber rod 4, so that the fiber rod 4 can be abutted against the second conical surface 11.

As shown in fig. 1 and 3, a rubber plug 6 for plugging the ink storage tube 5 is connected to one end, far away from the bead seat 2, of the pen core body 3, namely, the upper end of the pen core body 3 is connected with the rubber plug 6 to increase the tightness, a flange 12 is arranged on the rubber plug 6 along the circumferential direction on the outer circumferential wall of one end, far away from the pen core body 3, of the pen core body 3, the rubber plug 6 is inserted into the pen core body 3, the flange 12 abuts against the end part of the pen core body 3, namely, a flange 12 is arranged on the upper end of the outer circumferential wall of the rubber plug 6 along the circumferential direction, the lower end face of the flange 12 abuts against the upper end face of the pen core body 3, and an arc chamfer is arranged at the lower end of the rubber plug 6 to facilitate assembly; the end cover 13 is detachably connected to the end, far away from the ball seat 2, of the refill body 3, the end cover 13 is connected to the upper end of the refill body 3 in a sleeving or threaded connection mode, the upper end face of the rubber plug 6 and the flange 12 are located in the end cover 13, the end cover 13 plays a role in protecting the rubber plug 6, and when the end cover 13 is connected to the refill body 3, one end face, close to the rubber plug 6, of the end cover 13 abuts against the end face of the rubber plug 6, namely the lower end face of the end cover 13 abuts against the upper end face of the rubber plug 6.

The ink storage tube 5 is used for storing ink and supplying ink for the ball 1 through the fiber rod 4, the ink is supplied between the fiber rod 4 and the ball 1 through a capillary principle, long-time smooth ink supply can be realized, and unimpeded ink supply under the use environment without gravity or countergravity can be realized, the gap 8 between the fiber rod 4 and the ball 1 can prevent the abrasion of the fiber rod 4, the service life is prolonged, the end cover 13 is opened after the ink is used up, the ink can be injected into the rubber plug 6 through an injector, the recycling is realized, the use cost is reduced, in addition, the ball 1 made of high-strength materials can be selected to match with the high-precision ball seat 2, the friction between the ball 1 and the ball seat 2 is reduced, the service life of the ball 1 and the ball seat 2 is greatly prolonged, smooth writing can be realized, and the use experience is improved; the utility model has simple integral structure and greatly reduces the production cost.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Claims

1. The utility model provides a refill of circulated use, its characterized in that includes refill body (3), fibre pole (4), ink storage pipe (5) and rubber buffer (6), store up Mo Guan (5) and connect inside refill body (3), fibre pole (4) peg graft in storing up Mo Guan (5) just fibre pole (4) one end exposes outside refill body (3), on refill body (3) and keep away from one end of fibre pole (4) is connected with and is used for the shutoff rubber buffer (6) of storing up Mo Guan (5).

2. The pen refill capable of being recycled according to claim 1, further comprising a ball (1) and a ball seat (2), wherein a first through hole (7) is formed in the ball seat (2) along the axial direction, the ball (1) is rotationally connected to one end of the ball seat (2), the ball (1) is located in the first through hole (7) and a part of the ball (1) is exposed out of the ball seat (2), the other end of the ball seat (2) is connected with the pen refill body (3), one end of the fiber rod (4) extends into the first through hole (7), and a gap (8) is reserved between one end of the fiber rod (4) and the ball (1).

3. A recyclable cartridge according to claim 2, characterized in that the end of the fiber rod (4) facing the ball (1) is a concave spherical surface, and the spherical end of the fiber rod (4) is arranged concentrically with the ball (1).

4. A recyclable cartridge according to claim 2 or 3, characterized in that the gap (8) has a size ranging from 0.01mm to 0.08mm.

5. The pen refill capable of being recycled according to claim 2, wherein a limiting structure for preventing the fiber rod (4) from moving towards the ball (1) is arranged on the inner wall of the first through hole (7), the limiting structure comprises an annular protrusion (9) arranged on the inner wall of the first through hole (7), the inner wall of the first through hole (7) close to one end of the ball seat (2) is a first conical surface (10), the inner diameter of the first conical surface (10) gradually increases towards the direction close to the pen refill body (3), the spherical center of the ball (1) is located between the annular protrusion (9) and the first conical surface (10), the inner diameter of the annular protrusion (9) is smaller than the diameter of the ball (1), the minimum inner diameter of the first conical surface (10) is smaller than the diameter of the ball (1), and the ball (1) is embedded between the first conical surface (10) and the annular protrusion (9).

6. The recyclable refill according to claim 5, wherein the annular protrusion (9) is located between the fiber rod (4) and the center of the ball (1), the inner diameter of the annular protrusion (9) is smaller than the outer diameter of the fiber rod (4), a second conical surface (11) is formed on the annular protrusion (9) and faces one end surface of the refill body (3), and the inner diameter of the second conical surface (11) gradually increases toward a direction away from the ball (1).

7. The recyclable refill according to claim 1, wherein a flange (12) is circumferentially arranged on the outer peripheral wall of one end of the rubber plug (6) far away from the refill body (3), the rubber plug (6) is inserted into the refill body (3) and the flange (12) abuts against the end of the refill body (3).

8. A reusable refill according to claim 1, characterized in that an end cap (13) is detachably connected to the refill body (3) at an end remote from the fibre rod (4).

9. A reusable refill according to claim 8, characterized in that an end face on the end cap (13) and close to the rubber stopper (6) abuts against an end face of the rubber stopper (6).

10. A reusable refill according to claim 1, characterized in that the end of the fibre rod (4) inserted into the reservoir Mo Guan (5) is tapered.