CN219789744U - Ball pen adapting to pen cores with different lengths - Google Patents

Abstract

The utility model discloses a ball pen adapting to pen cores with different lengths, which comprises a pen tube and pen cores, wherein the inner side wall of the upper part of the pen tube is detachably connected with a positioning column, two ends of the positioning column are respectively provided with a first positioning groove and a second positioning groove with different heights, a cushion block is arranged between the first positioning groove and the second positioning groove at intervals, the lower part of the pen tube is in threaded connection with the pen point tube, the upper end of each pen core is positioned in the first positioning groove or the second positioning groove, and the lower end of each pen core penetrates out of a through hole of the pen point tube. The pen refill fixing device is simple in structure and convenient to use, and the proper end part can be selected to be inserted according to the length of the pen refill through the detachably connected positioning column, so that a sufficient height is reserved for the long pen refill or a short pen refill is filled with a distance, the pen barrel can be matched with pen refills of different lengths, and the pen refills are convenient to replace.

Description

Ball pen adapting to pen cores with different lengths

Technical Field

The utility model relates to the technical field of ball-point pens, in particular to a ball-point pen suitable for pen cores with different lengths.

Background

Ball point pens are one of the commonly used writing instruments in the past, and are commonly found in people's work, study and life. The existing ball-point pen generally mainly comprises a pen tube and a pen refill, wherein the pen tube is designed into a cylindrical structure which is easy to hold by a human hand, and the pen refill is an ink supply part of the ball-point pen. The traditional ball pen has the advantages that the pen tube of the traditional ball pen is still intact after the ink of the pen core is used up, and the traditional ball pen can be used continuously only by replacing the new pen core. However, the length of the existing pen tube is generally inconvenient, when the pen core is replaced, a new pen core with the same length as the old pen core can be replaced to be matched with the pen tube, otherwise, the pen core is too short or too long to enable the ball-point pen to be normally installed, a section at the top end of the pen core is cut off, the length of the pen core is possibly reduced or shortened when the pen core is cut off, and some pen cores can be matched with the pen tube even when the pen core is cut to the ink level; too short refill then need to plug cushion such as paper group in the pen tube top, perhaps insert a section little stick in refill top and just can adapt to the length of pen tube, brings inconvenience for people's use.

Disclosure of Invention

The utility model aims to solve the problems and provides the ball-point pen which is suitable for pen cores with different lengths and is convenient to replace.

The utility model adopts the following technical scheme:

the utility model provides a ball-point pen of different length pen cores of adaptation, includes pen tube and pen core, pen tube upper portion inside wall can be dismantled and is connected with the reference column, first constant head tank and the second constant head tank of co-altitude have been seted up respectively at the reference column both ends, the interval has the cushion between first constant head tank and the second constant head tank, pen tube lower part threaded connection has the nib pipe, the pen core upper end is arranged in first constant head tank or second constant head tank, and the pen core lower extreme is worn out from the through-hole of nib pipe.

As a preferable technical scheme of the pen tube, the inner side wall of the upper part of the pen tube is integrally formed and provided with a thickening ring, the inner side wall of the thickening ring is provided with internal threads, the outer side wall of the positioning column is provided with external threads matched with the internal threads, and the positioning column is in threaded connection with the thickening ring.

As a preferable technical scheme of the utility model, the end part of the positioning column is in interference connection with an end cover, the end cover comprises a top disc and an elastic connecting column, one end of the connecting column is fixedly connected with the middle of the bottom surface of the end cover, and the other end of the connecting column is in interference connection with the first positioning groove or the second positioning groove.

As a preferable technical scheme of the utility model, the positioning column is a transparent column body, an annular cavity is arranged in the positioning column, and fluorescent liquid is filled in the cavity.

As a preferable technical scheme of the utility model, the height of the first positioning groove is larger than or smaller than that of the second positioning groove.

The beneficial effects of the utility model are as follows:

the pen refill fixing device is simple in structure and convenient to use, and the proper end part can be selected to be inserted according to the length of the pen refill through the detachably connected positioning column, so that a sufficient height is reserved for the long pen refill or a short pen refill is filled with a distance, the pen barrel can be matched with pen refills of different lengths, and the pen refills are convenient to replace.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is an assembled block diagram of the present utility model;

FIG. 3 is a schematic view of a positioning column structure;

fig. 4 is a schematic view of a long refill mounting structure;

fig. 5 is a schematic view of a short cartridge mounting structure.

The symbols in the drawings illustrate:

1: pen tube, 2: refill, 3: positioning column, 4: first positioning groove, 5: second constant head tank, 6: cushion block, 7: nib tube, 8: end cap, 9: a cavity.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings.

In the embodiments, it should be understood that the orientation or positional relationship indicated by the terms "middle," "upper," "lower," "top," "bottom," "right," "left," "above," "below," "back," "front," "middle," "outside," "inside," etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present embodiments, and are not intended to indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present embodiments.

As shown in fig. 1 to 5, a ball pen for adapting to pen cores with different lengths comprises a pen tube 1 and a pen core 2, wherein a positioning column 3 is detachably connected to the inner side wall of the upper portion of the pen tube 1, a first positioning groove 4 and a second positioning groove 5 with different heights are respectively formed in two ends of the positioning column 3, a cushion block 6 is arranged between the first positioning groove 4 and the second positioning groove 5 at intervals, the first positioning groove 4 and the second positioning groove 5 are not communicated with each other through separation of the cushion block 6, a pen point tube 7 is connected to the lower portion of the pen tube 1 through threads, the upper end of the pen core 2 is located in the first positioning groove 4 or the second positioning groove 5, and the lower end of the pen core 2 penetrates out from a through hole of the pen point tube 7.

Further, the pen tube 1 upper portion inside wall integrated into one piece is equipped with the thickening circle, the thickening circle inside wall is equipped with the internal thread, be equipped with on the reference column 3 lateral wall with internal thread complex external screw thread, reference column 3 threaded connection is in the thickening circle. The thickness of the side wall of the upper part of the pen tube 1 is increased through the thickening ring, so that the pen tube is more stable and durable when in threaded connection with the fixing column 3.

Further, the end part of the positioning column 3 is in interference connection with an end cover 8, the end cover 8 comprises a top disc and a connecting column with elasticity, one end of the connecting column is fixedly connected in the middle of the bottom surface of the end cover 8, and the other end of the connecting column is in interference connection with the first positioning groove 4 or the second positioning groove 5. Specifically, when the first positioning groove 4 is located inside the pen tube 1, the end cover 8 is connected in the second positioning groove 5; when the second positioning groove 5 is positioned in the pen tube 1, the end cover 8 is connected in the first positioning groove 4, and the first positioning groove 4 or the second positioning groove 5 exposed to the outside is blocked and protected through the end cover 8, so that sundries are prevented from falling into the first positioning groove 4 or the second positioning groove 5.

Further, the positioning column 3 is a transparent column, an annular cavity 9 is formed in the positioning column, and fluorescent liquid is filled in the cavity 9. The transparent positioning column 3 filled with fluorescent liquid can emit dim light in a dim light environment, so that people can find a ball pen quickly in an environment with poor light.

Further, the height of the first positioning groove 4 is larger or smaller than that of the second positioning groove 5. In the present embodiment, the height of the first positioning groove 4 is greater than the height of the second positioning groove 5.

The use principle of the utility model (taking the embodiment as an example): when the pen core 2 is longer, one end of the positioning column 3 provided with the first positioning groove 4 is connected to the upper end of the pen tube 1, and when the pen core 2 is specifically installed, the positioning column 3 can be taken out of the pen tube 1 firstly, then one end of the positioning column 3 provided with the first positioning groove 4 is screwed into the pen tube 1 until the positioning column 3 can not be screwed into the pen tube 1 any more and can be stopped, the upper end of the pen core 2 is ensured to be positioned in the first positioning groove 4, at the moment, the positioning column 3 is firmly connected to the upper end of the pen tube 1 in a threaded manner, and is matched with the blocking of the cushion block 6, so that the pen core 2 can not be withdrawn from the pen tube 1, and the long pen core 2 is installed, wherein the longer the pen core 2 is, the shorter the depth of the positioning column 3 inserted into the pen tube 1 is, so that a sufficient height is reserved for the long pen core 2; when the pen core 2 is shorter, the short pen core 2 is put in from the upper end of the pen tube 1 in the same way, one end of the positioning column 3 provided with the second positioning groove 5 is screwed into the pen tube 1 until the positioning column 3 can not be screwed into the pen tube 1 any more, wherein the shorter the pen core 2 is, the longer the depth of the positioning column screwed into the pen tube 1 is, so that the height of the short pen core 2 is filled.

Finally, it should be noted that: these embodiments are merely for illustrating the present utility model and do not limit the scope of the present utility model. Further, various other changes and modifications will be apparent to those skilled in the art from the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (5)

1. Ball-point pen of adaptation different length pen cores, including pen tube (1) and pen core (2), its characterized in that: the pen tube is characterized in that a positioning column (3) is detachably connected to the inner side wall of the upper portion of the pen tube (1), a first positioning groove (4) and a second positioning groove (5) with different heights are respectively formed in two ends of the positioning column (3), a cushion block (6) is arranged between the first positioning groove (4) and the second positioning groove (5), a pen point tube (7) is connected to the lower portion of the pen tube (1) in a threaded mode, the upper end of the pen core (2) is located in the first positioning groove (4) or the second positioning groove (5), and the lower end of the pen core (2) penetrates out of a through hole of the pen point tube (7).

2. A ballpoint pen for adapting to pen refills of different lengths according to claim 1, wherein: the pen tube is characterized in that a thickening ring is arranged on the inner side wall of the upper portion of the pen tube (1) in an integrated mode, an inner thread is arranged on the inner side wall of the thickening ring, an outer thread matched with the inner thread is arranged on the outer side wall of the positioning column (3), and the positioning column (3) is in threaded connection with the thickening ring.

3. A ballpoint pen for adapting to pen refills of different lengths according to claim 1, wherein: the end part of the positioning column (3) is connected with an end cover (8) in an interference manner, the end cover (8) comprises a top disc and an elastic connecting column, one end of the connecting column is fixedly connected with the middle of the bottom surface of the end cover (8), and the other end of the connecting column is connected with the first positioning groove (4) or the second positioning groove (5) in an interference manner.

4. A ballpoint pen for adapting to pen refills of different lengths according to claim 1, wherein: the positioning column (3) is a transparent column, an annular cavity (9) is formed in the positioning column (3), and fluorescent liquid is filled in the cavity (9).

5. A ballpoint pen for adapting to pen refills of different lengths according to claim 1, wherein: the height of the first positioning groove (4) is larger than or smaller than that of the second positioning groove (5).