Marking pen convenient for ink adding

Abstract

The marking pen comprises a pen holder and a pen cover, a pen core is arranged in the pen holder, an end cover is arranged at the rear end of the pen holder, a clamping groove is formed in the rear end of the pen holder, the end cover is connected with the clamping groove in a buckled mode, a through hole is formed in the middle of the end cover, and the through hole and the pen core are arranged in an aligned mode. The pen further comprises a connecting sleeve, external threads are arranged on the side wall of the rear end of the pen holder, a groove is formed in the connecting sleeve, internal threads are arranged on the inner wall of the groove, the connecting sleeve is connected to the rear end of the pen holder through the threads, external threads matched with the groove are arranged on the side wall of the pen cover, and the section of the connecting sleeve is in an antiparallelogram shape. The operation of disassembling the end cover and holding the pen holder to be vertical is omitted, the ink adding process is more convenient and labor-saving, the connecting cover is directly connected with the pen holder in a threaded mode, and good sealing performance can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of stationery, in particular to a marker pen which is convenient for refilling ink. Background Art

[0002] A marker pen is a pen commonly used for making marks or signs on one or more materials such as paper, wood, metal, plastic, enamel, etc. After making a mark with the marker pen, it not only has the advantage of being eye-catching but also is not easy to fade.

[0003] After a marker pen is used for a period of time, it needs to be refilled with ink. When refilling the existing marker pen, usually the end cap at the end of the pen barrel needs to be opened, and then the ink is added from the end of the pen core. The pen barrel and the end cap are usually connected by a snap connection, and the opening method is relatively laborious. Moreover, the sealing performance between the lid and the pen barrel will also be affected after opening. And when refilling the ink, it is necessary to hold the pen barrel vertically and keep it stable. It is easy to spill the ink when there is a shake, and the operation is relatively troublesome. Therefore, a marker pen that is more convenient for refilling ink is still needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a marker pen that is convenient for refilling ink to solve the problems raised in the above background art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: A marker pen that is convenient for refilling ink includes a pen barrel and a pen cap. A pen core is arranged inside the pen barrel. An end cap is arranged at the rear end of the pen barrel. A card slot is opened at the rear end of the pen barrel. The end cap is snap-connected to the card slot. A through hole is opened in the middle of the end cap, and the through hole is arranged in alignment with the pen core; A connecting sleeve is further included. An external thread is arranged on the side wall at the rear end of the pen barrel. A groove is opened in the connecting sleeve. An internal thread is arranged on the inner wall of the groove. The connecting sleeve is threadedly connected to the rear end of the pen barrel. An external thread adapted to the groove is arranged on the side wall of the pen cap. The cross-sectional shape of the connecting sleeve is an equilateral trapezoid.

[0006] With the above technical scheme, when refilling ink, the connecting sleeve is rotated to be separated from the pen barrel. At this time, the through hole on the end cap is exposed. Then the end cap is rotated and sleeved on the pen cap. At this time, the shape of the end cap is a frustum of a pyramid or a frustum of a cone, and the lower end is wide and the upper end is narrow. Therefore, it has good stability and can be used as a base to keep the pen barrel upright. Then the syringe for injecting ink is inserted into the through hole and aligned with the pen core to realize the ink refilling operation for the pen core. Compared with the prior art, the operations of disassembling the end cap and holding the pen barrel upright are eliminated, making the ink refilling process more convenient and labor-saving. And the connecting cover is directly threadedly connected to the pen barrel, which can maintain good sealing performance.

[0007] As a further optimization of the utility model, a plug post extending forward is arranged in the middle of the inner bottom of the groove, and the plug post passes through the through hole.

[0008] With the above technical solution, when the connecting sleeve is installed on the pen barrel, the inserting post rotates in the inserting hole, which can scrape off the dry ink remaining in the through hole, thus avoiding the blockage of the through hole and increasing the connection strength between the connecting sleeve and the pen barrel.

[0009] As a further optimization of the present utility model, the shape of the through hole is frustum-shaped and the radius gradually decreases towards the direction of the pen refill.

[0010] With the above technical solution, the situation of the ink in the pen refill flowing back through the through hole is reduced, and when the connecting sleeve is opened, the ink in the pen refill is prevented from splashing out.

[0011] As a further optimization of the present utility model, a slot adapted to the shape of the inserting post is provided at the front end of the pen cap.

[0012] As a further optimization of the present utility model, a plurality of sliding grooves are circumferentially formed at one end of the connecting sleeve away from the pen barrel. The sliding grooves penetrate through the side wall of the connecting sleeve in the radial direction. A sliding block that can slide radially is arranged in the sliding groove. The sliding block is connected with an extension plate, and after the extension plate slides along the radial direction, it can partially extend out of the sliding groove.

[0013] With the above technical solution, when the connecting sleeve is connected to the pen cap as a base, the sliding block is slid to drive the extension plate to slide in the radial direction. After the extension plate slides, it can partially extend out of the sliding groove. The plurality of extension plates further increase the bottom area of the connecting sleeve, so that the connecting sleeve can be more stable.

[0014] As a further optimization of the present utility model, a pair of limiting blocks are provided on the two side walls of the groove, and the distance between the pair of limiting blocks is smaller than the width of the sliding block.

[0015] With the above technical solution, the limiting blocks can prevent the extension plate from slipping out of the sliding groove.

[0016] The beneficial effects of the present utility model are as follows: When refilling ink, the connecting sleeve is rotated to be separated from the pen barrel. At this time, the through hole on the end cap is exposed. Then the end cap is rotated and sleeved on the pen cap. At this time, the shape of the end cap is frustum-shaped or trapezoid-shaped, and the lower end is wide and the upper end is narrow. Therefore, it has good stability and can be used as a base to keep the pen barrel upright. Then the syringe for refilling ink is inserted into the through hole and aligned with the pen refill to realize the ink refilling operation of the pen refill. Compared with the prior art, the operations of disassembling the end cap and holding the pen barrel upright are eliminated, making the ink refilling process more convenient and labor-saving. And the connecting cap is directly threadedly connected to the pen barrel, which can maintain good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a usage state diagram of the present utility model;

[0019] Figure 3 This is a schematic diagram of another perspective structure of the connecting sleeve in the present utility model.

[0020] The meanings of the reference numerals in the figure are as follows: 1, pen barrel; 11, refill; 12, card slot; 2, pen cap; 21, slot; 3, end cap; 31, through hole; 4, connecting sleeve; 41, groove; 42, insertion post; 43, sliding groove; 431, limiting block; 5, slider; 6, extension plate. Detailed implementation manners

[0021] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0022] Embodiment 1:

[0023] Referring to the appendix Figure 1-2 In this embodiment disclosed by the present utility model, it is further provided that: a marker pen facilitating ink filling includes a pen barrel 1 and a pen cap 2. A refill 11 is provided inside the pen barrel 1. An end cap 3 is provided at the rear end of the pen barrel 1. A card slot 12 is opened at the rear end of the pen barrel 1. The end cap 3 is snap-connected to the card slot 12. The front end of the end cap 3 is in abutting connection and fixation with the rear end of the refill 11. A through hole 31 is opened in the middle of the end cap 3. The shape of the through hole 31 is frustum-shaped and the radius gradually decreases towards the direction of the refill 11. The through hole 31 is arranged in alignment with the refill 11;

[0024] It further includes a connecting sleeve 4. The rear end side wall of the pen barrel 1 is provided with an external thread. The connecting sleeve 4 is provided with a groove 41. The inner wall of the groove 41 is provided with an internal thread. The connecting sleeve 4 is threadedly connected to the rear end of the pen barrel 1. The side wall of the pen cap 2 is provided with an external thread adapted to the groove 41. The cross-sectional shape of the connecting sleeve 4 is an equilateral trapezoid;

[0025] Furthermore, an insertion post 42 extending forward is provided in the middle of the inner bottom of the groove 41. The insertion post 42 passes through the through hole 31. The front end of the pen cap 2 is provided with a slot 21 adapted to the shape of the insertion post 42.

[0026] The principle of this embodiment is as follows: When filling ink, rotate the connecting sleeve 4 to separate it from the pen barrel 1. At this time, the through hole 31 on the end cap 3 is exposed. The shape of the through hole 31 can reduce the backflow of the ink in the refill 11 from the through hole 31, and when the connecting sleeve 4 is opened, it can prevent the ink in the refill 11 from splashing out;

[0027] Next, the end cap 3 is rotated and sleeved on the pen cap 2. At this time, the shape of the end cap 3 is frustum-shaped or truncated conical, with a wider lower end and a narrower upper end. Therefore, it has good stability and can be used as a base to keep the pen shaft 1 upright. Then, the syringe for injecting ink is inserted into the through hole 31 and aligned with the refill 11 to realize the ink filling operation for the refill 11. Compared with the prior art, the operations of disassembling the end cap 3 and holding the pen shaft 1 upright are eliminated, making the ink filling process more convenient and labor-saving. And the connecting cap is directly threadedly connected to the pen shaft 1, which can maintain good sealing performance;

[0028] When the connecting sleeve 4 is installed on the pen shaft 1, the insertion post 42 rotates in the insertion hole, which can scrape off the dry ink remaining in the through hole 31, thus avoiding the blockage of the through hole 31 and increasing the connection strength between the connecting sleeve 4 and the pen shaft 1.

[0029] Embodiment 2:

[0030] See the attached Figure 3 , in this embodiment, on the basis of the solution of Embodiment 1, a plurality of grooves 41 are circumferentially formed at one end of the connecting sleeve 4 away from the pen shaft 1. The grooves 41 penetrate through the side wall of the connecting sleeve 4 in the radial direction. A slider 5 that can slide radially is provided in the sliding groove 43. The slider 5 is connected with an extension plate 6. After the extension plate 6 slides along the radial direction, it can partially extend out of the groove 41. A pair of limit blocks 431 are provided on the two side walls of the groove 41, and the distance between the pair of limit blocks 431 is less than the width of the slider 5.

[0031] The principle of this embodiment is: when the connecting sleeve 4 is connected to the pen cap 2 as a base, the slider 5 is slid to drive the extension plate 6 to slide in the radial direction. After the extension plate 6 slides, it can partially extend out of the sliding groove 43. The limit block 431 can prevent the extension plate 6 from slipping out of the sliding groove 43. The multiple extension plates 6 further increase the bottom area of the connecting sleeve 4, so that the connecting sleeve 4 can be more stable.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications made as above should also be regarded as the protection scope of the present invention.

Claims

1. A marker pen convenient for refilling ink, comprising a pen barrel (1) and a pen cap (2). A refill (11) is provided inside the pen barrel (1), and an end cap (3) is provided at the rear end of the pen barrel (1). It is characterized in that, A card slot (12) is provided at the rear end of the pen barrel (1), and the end cap (3) is snap-connected to the card slot (12). A through hole (31) is provided in the middle of the end cap (3), and the through hole (31) is arranged to be aligned with the refill (11); further comprising a connecting sleeve (4), an external thread is provided on the side wall of the rear end of the pen barrel (1), a groove (41) is provided in the connecting sleeve (4), an internal thread is provided on the inner wall of the groove (41), and the connecting sleeve (4) is threadedly connected to the rear end of the pen barrel (1). An external thread adapted to the groove (41) is provided on the side wall of the pen cap (2), and the cross-sectional shape of the connecting sleeve (4) is an equilateral trapezoid.

2. The felt-tip pen convenient for ink filling according to claim 1, wherein A plug post (42) extending forward is provided in the middle of the inner bottom of the groove (41), and the plug post (42) passes through the through hole (31).

3. The felt-tip pen facilitating ink filling according to claim 1 or 2, characterized in that, The shape of the through hole (31) is frustum-shaped and the radius gradually decreases in the direction of the refill (11).

4. The felt-tip pen facilitating ink filling according to claim 2, wherein A slot (21) adapted to the shape of the plug post (42) is provided at the front end of the pen cap (2).

5. A felt-tip pen facilitating ink filling according to claim 1, wherein, A plurality of sliding grooves (43) are provided in the circumferential direction at one end of the connecting sleeve (4) away from the pen barrel (1). The sliding grooves (43) penetrate through the side wall of the connecting sleeve (4) in the radial direction. A slider (5) capable of sliding in the radial direction is provided in the sliding grooves (43), and the slider (5) is connected to an extension plate (6). After the extension plate (6) slides in the radial direction, it can partially extend out of the sliding grooves (43).

6. The felt-tip pen for facilitating ink filling according to claim 5, characterized in that, A pair of limiting blocks (431) are provided on the two side walls of the groove (41), and the distance between the pair of limiting blocks (431) is less than the width of the slider (5).

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