CN209833093U - Ball pen - Google Patents

Abstract

The utility model relates to the technical field of ball-point pen, and provides a ball-point pen, which comprises a pen container with a cylindrical ink storage cavity, a pen head and a water leading core; one end of the water leading core is connected with the pen head, and the other end of the water leading core extends into the ink storage cavity; the ball-point pen also comprises a piston which is positioned in the ink storage cavity and slides along the ink storage cavity and a traction mechanism which is used for drawing the piston to move between a first preset position close to the pen point and a second preset position far away from the pen point; the inner wall of the ink storage cavity is provided with an ink inlet communicated with the external space; the piston is provided with a one-way valve for allowing the ink in the first chamber to flow into the second chamber; when the piston is positioned at the first preset position, the ink inlet and the second chamber are isolated, and the water guide core is contacted with the second chamber; when the piston is located at the second preset position, the ink inlet is communicated with the first chamber. When the piston reciprocates between the first preset position and the second preset position, the ink enters the second chamber through the ink inlet, the first chamber and the one-way valve in sequence.

Description

Ball pen

Technical Field

The utility model belongs to the technical field of walk the ballpoint pen, more specifically say, relate to a walk ballpoint pen.

Background

In modern society, there is an increasing demand for convenience of writing. The ball-point pen is more and more popular with users, and the existing ball-point pen is usually discarded after the ink is written, which is very waste.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ballpoint pen to solve the technical problem that the ballpoint pen that exists runs out of ink and can only abandon among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the ball-point pen comprises a pen container with a cylindrical ink storage cavity, a pen point and a water guide core; one end of the water leading core is connected with the pen point, and the other end of the water leading core extends into the ink storage cavity; the ball-point pen also comprises a piston which is positioned in the ink storage cavity and slides along the ink storage cavity and a traction mechanism which is used for drawing the piston to move between a first preset position close to the pen point and a second preset position far away from the pen point; the inner wall of the ink storage cavity is provided with an ink inlet communicated with the external space; the piston divides the ink storage cavity into a first cavity and a second cavity which are isolated from each other, and the first cavity is positioned between the piston and the pen point; the piston is provided with a one-way valve for allowing the ink in the first chamber to flow into the second chamber; when the piston is located at the first preset position, the ink inlet is isolated from the second chamber, and the water diversion core is in contact with the second chamber; when the piston is located at the second preset position, the ink inlet is communicated with the first chamber.

Further, the check valve comprises a liquid passing hole which is formed in the piston and communicated with the first cavity and the second cavity, and a one-way valve which is arranged in the liquid passing hole and used for allowing ink in the first cavity to flow into the second cavity.

Furthermore, a through hole is formed in the piston, and the piston is sleeved on the water diversion core through the through hole.

Further, the pen container also comprises an ink tube connected to the pen container, and the ink tube is communicated with the ink inlet.

Furthermore, the ink tube is rod-shaped, and one end of the ink tube is hinged to the pen container.

Further, the pen container is provided with an accommodating space; the ink tube is movable between an open position and a storage position; when the ink tube is located at the accommodating position, the ink tube is accommodated in the accommodating space.

Further, the accommodating space is an accommodating groove formed by the surface of the pen container in a concave mode.

Further, a sealing element is arranged in the accommodating groove; when the ink tube is accommodated in the accommodation position, the sealing member seals the water inlet of the ink tube.

Furthermore, the traction mechanism comprises a pen cap and a connecting rod, and the pen cap is detachably connected to the pen container; one end of the connecting rod is connected to the pen cap, and the other end of the connecting rod is connected to the piston.

Further, the connecting rod is in a hollow sleeve shape, and the connecting rod is sleeved on the water diversion core.

The utility model provides a ball-point pen's beneficial effect lies in: compared with the prior art, the ball pen provided by the utility model has the advantages that the ink in the ink storage cavity is output from the pen point through the water leading core for the user to write; the piston moves between a first preset position and a second preset position along the ink storage cavity, the second preset position is far away from the pen point than the first preset position, and the ink inlet and the second chamber are isolated when the piston is at the first preset position, so that the piston always isolates the second chamber and the ink inlet no matter the piston is at the first preset position or at the second preset position, and ink in the second chamber cannot flow out of the ink inlet; when the piston moves from the first preset position to the second preset position, as long as the first chamber is communicated with the ink inlet, the ink is sucked into the first chamber by the piston through the ink inlet; because the piston is provided with the one-way valve, the one-way valve can allow the ink in the first chamber to flow into the second chamber, so that the ink in the first chamber enters the second chamber through the one-way valve in the process that the piston moves from the second preset position to the first preset position; when the piston moves back and forth between a first preset position and a second preset position, ink continuously enters the second chamber through the ink inlet, the first chamber and the one-way valve; the ink can be added after being used up, so that the ink of the ball-point pen is prevented from being discarded after being used up; in addition, when the piston is located at the first preset position, the water diversion core is in contact with the second chamber, so that ink in the second chamber reaches the pen point through the water diversion core for a user to write.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a schematic structural view of a ballpoint pen according to an embodiment of the present invention when an ink tube is located at a receiving position;

FIG. 2 is a schematic left-view structural diagram of a ballpoint pen according to an embodiment of the present invention when an ink tube is in an open position;

FIG. 3 is a schematic cross-sectional view of a ballpoint pen according to an embodiment of the present invention when the ink tube is located at the receiving position;

FIG. 4 is a schematic diagram of a partial cross-sectional structure of a ballpoint pen according to an embodiment of the present invention when an ink tube is located at a receiving position;

FIG. 5 is a schematic cross-sectional view illustrating the flow of ink during the movement of the piston from the first predetermined position to the second predetermined position according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view illustrating a flow direction of ink during the movement of the piston from the second predetermined position to the first predetermined position according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a pen container; 11-an ink storage cavity; 12-an ink inlet; 131-a first chamber; 132-a second chamber; 14-a containing space; 15-a seal; 2-pen point; 3-a water diversion core; 4-a traction mechanism; 41-pen cap; 42-connecting rod; 5-a piston; 51-a one-way valve; 511-liquid passing hole; 512-one-way valve; 6-ink tube; f1 — first direction of movement; f2-second direction of movement.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4 together, the ball-point pen of the present invention will now be described. The ball-point pen comprises a pen barrel 1 with a cylindrical ink storage cavity 11, a pen point 2 and a water guide core 3; one end of the water diversion core 3 is connected with the pen point 2, and the other end of the water diversion core 3 extends into the ink storage cavity 11; the ballpoint pen also comprises a piston 5 which is positioned in the ink storage cavity 11 and slides along the ink storage cavity 11, and a traction mechanism 4 which is used for drawing the piston 5 to move between a first preset position close to the pen head 2 and a second preset position far away from the pen head 2; the inner wall of the ink storage cavity 11 is provided with an ink inlet 12 communicated with the external space; the piston 5 divides the ink storage cavity 11 into a first cavity 131 and a second cavity 132 which are isolated from each other, and the first cavity 131 is positioned between the piston 5 and the pen point 2; the piston 5 is provided with a check valve 51 for allowing the ink in the first chamber 131 to flow into the second chamber 132; when the piston 5 is located at the first preset position, the ink inlet 12 is isolated from the second chamber 132, and the wick 3 is in contact with the second chamber 132; when the piston 5 is located at the second predetermined position, the ink inlet 12 communicates with the first chamber 131.

Thus, the ink in the ink storage cavity 11 is output from the pen point 2 through the water leading core 3 for the user to write; the piston 5 moves along the ink storage cavity 11 between a first preset position and a second preset position, the second preset position is farther away from the pen point 2 than the first preset position, and because the ink inlet 12 is isolated from the second chamber 132 when the piston 5 is at the first preset position, the piston 5 always isolates the second chamber 132 from the ink inlet 12 no matter whether the piston 5 is at the first preset position or at the second preset position, so that the ink in the second chamber 132 cannot flow out from the ink inlet 12; since the first chamber 131 is communicated with the ink inlet 12 when the piston 5 is at the second predetermined position, when the piston 5 moves from the first predetermined position to the second predetermined position (see fig. 6, the piston 5 moves in the first moving direction F1), as long as the first chamber 131 is communicated with the ink inlet 12, ink is sucked into the first chamber 131 through the ink inlet 12 by the piston 5; because the piston 5 has the check valve 51, the check valve 51 can allow the ink in the first chamber 131 to flow into the second chamber 132, so that when the piston 5 moves from the second predetermined position to the first predetermined position (see fig. 6, the piston 5 moves in the second moving direction F2), the ink in the first chamber 131 enters the second chamber 132 through the check valve 51; namely, when the piston 5 reciprocates between the first preset position and the second preset position, the ink continuously enters the second chamber 132 through the ink inlet 12, the first chamber 131 and the check valve 51; the ink can be added after being used up, so that the ink of the ball-point pen is prevented from being discarded after being used up; in addition, when the piston 5 is located at the first predetermined position, the wick 3 contacts the second chamber 132, so that the ink in the second chamber 132 reaches the pen point 2 through the wick 3 for the user to write.

Optionally, in one embodiment, the wick 3 is made of cotton. In another embodiment, the wick 3 is made of wood fiber. In other embodiments, the wick 3 may be made of other materials as long as the wick 3 can drain the ink in the ink storage chamber 11 to the pen tip 2.

Optionally, in one embodiment, the wick 3 is rod-shaped.

Further, referring to fig. 1 to 4, as an embodiment of the ballpoint pen of the present invention, the check valve 51 includes a liquid passing hole 511 formed on the piston 5 and communicating the first chamber 131 and the second chamber 132, and a check valve 512 disposed in the liquid passing hole 511 and allowing the ink in the first chamber 131 to flow into the second chamber 132. Thus, the one-way valve 512 is easy to manufacture and low in cost.

Optionally, in one embodiment, the number of one-way valves 51 is at least two.

Further, referring to fig. 1 to 4, as a specific embodiment of the ball-point pen of the present invention, a through hole is formed on the piston 5, and the piston 5 is sleeved on the water guiding core 3 through the through hole. Thus, the piston 5 is not easy to interfere with the wick 3 during the movement. Optionally, in one embodiment, the wick 3 is a hard needle.

Further, referring to fig. 1 to 4, as a specific embodiment of the ballpoint pen of the present invention, the ballpoint pen further includes an ink tube 6 connected to the pen container 1, and the ink tube 6 is communicated with the ink inlet 12. In this manner, the ink can be easily taken from the outside through the ink tube 6.

Further, referring to fig. 1 to 4, as a specific embodiment of the ballpoint pen of the present invention, the ink tube 6 is rod-shaped, and one end of the ink tube 6 is hinged to the pen container 1. Thus, the ink tubes 6 can be rotated relative to the barrel 1 to adjust the positions of the ink tubes 6.

Further, referring to fig. 1 to 4, as a specific embodiment of the ball-point pen of the present invention, the pen container 1 has a receiving space 14; the ink tubes 6 are movable between an open position and a storage position; when the ink tube 6 is located at the storage position, the ink tube 6 is stored in the storage space 14. Thus, when the ink tube 6 needs to be used, the ink tube 6 is switched to the open position; after the ink tubes 6 are used, the ink tubes 6 are switched to the storage position to store the ink tubes 6 in the accommodating space 14.

Further, referring to fig. 1 to 4, as an embodiment of the ballpoint pen of the present invention, the accommodating space 14 is an accommodating groove formed by a surface of the pen container 1 being recessed. Therefore, the accommodating groove is very simple to manufacture and low in cost.

Further, referring to fig. 1 to 4, as a specific embodiment of the ball-point pen of the present invention, a sealing member 15 is disposed in the receiving groove; when the ink tubes 6 are housed in the housing position, the seal 15 seals the water inlets (not shown) of the ink tubes 6. Thus, when the ink tube 6 reaches the storage position and is stored in the storage groove, the sealing member 15 can seal the water inlet of the ink tube 6 to prevent the ink from flowing out of the water inlet. Optionally, in one embodiment, the seal 15 is rubber.

Further, referring to fig. 1 to 4, as a specific embodiment of the ballpoint pen provided by the present invention, the traction mechanism 4 includes a cap 41 and a connecting rod 42, the cap 41 is detachably connected to the pen container 1; one end of the link 42 is connected to the cap 41, and the other end of the link 42 is connected to the piston 5. In this way, the cap 41 can be detached from the barrel 1 to pull the piston 5 to move back and forth along the ink storage chamber 11 through the connecting rod 42.

Alternatively, in one embodiment, the pen tip 2 is disposed at the bottom of the barrel 1, the cap 41 is disposed at the top of the barrel 1, the top of the barrel 1 is opened with an opening (not shown) communicating with the second chamber 132, the second chamber 132 communicates with the external space through the opening (when the piston 5 moves between the first predetermined position and the second predetermined position, the second chamber 132 can always communicate with the external space through the opening), and the connecting rod 42 extends into the ink storage chamber 11 from the opening and is connected with the piston 5 in the ink storage chamber 11; during the movement of the piston 5, the air pressure in the second chamber 132 is always the atmospheric pressure, so that the resistance to the movement of the piston 5 is reduced. Specifically, in one embodiment, when the cap 41 is attached to the barrel 1, the cap 41 covers the opening, preventing ink in the second chamber 132 from leaking out of the opening.

Optionally, in an embodiment, the cap 41 is provided with a vent (not shown) which is communicated with the second chamber 132, and a waterproof and breathable membrane is disposed in the vent. Thus, the external air can exchange with the ink storage cavity 11 through the waterproof and breathable film to keep the air pressure in the ink storage cavity 11 at atmospheric pressure, and meanwhile, the liquid in the ink storage cavity 11 cannot leak out from the breathable hole. Specifically, in one embodiment, the waterproof breathable membrane is a polytetrafluoroethylene membrane. Therefore, the polytetrafluoroethylene membrane has smooth surface, chemical substance resistance, air permeability, water impermeability, large air permeability, strong acid and alkali resistance and no toxicity.

Optionally, in one embodiment, the cap 41 is threaded onto the barrel 1, such that the cap 41 is convenient both during installation and removal.

Further, referring to fig. 1 to 4, as an embodiment of the ball-point pen of the present invention, the connecting rod 42 is in a hollow sleeve shape, and the connecting rod 42 is sleeved on the water guiding core 3. In this way, the connecting rod 42 is less likely to interfere with the wick 3 during movement of the traction piston 5.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The ball-point pen comprises a pen container with a cylindrical ink storage cavity, a pen point and a water guide core; one end of the water leading core is connected with the pen point, and the other end of the water leading core extends into the ink storage cavity; the method is characterized in that: the ink storage cavity is internally provided with a piston which slides along the ink storage cavity and a traction mechanism which is used for drawing the piston to move between a first preset position close to the pen point and a second preset position far away from the pen point; the inner wall of the ink storage cavity is provided with an ink inlet communicated with the external space; the piston divides the ink storage cavity into a first cavity and a second cavity which are isolated from each other, and the first cavity is positioned between the piston and the pen point; the piston is provided with a one-way valve for allowing the ink in the first chamber to flow into the second chamber; when the piston is located at the first preset position, the ink inlet is isolated from the second chamber, and the water diversion core is in contact with the second chamber; when the piston is located at the second preset position, the ink inlet is communicated with the first chamber.

2. The ballpoint pen of claim 1, wherein: the one-way valve comprises a liquid passing hole which is formed in the piston and communicated with the first cavity and the second cavity, and a one-way valve which is arranged in the liquid passing hole and used for allowing ink in the first cavity to flow into the second cavity.

3. The ballpoint pen of claim 1, wherein: the piston is provided with a through hole and sleeved on the water diversion core through the through hole.

4. The ballpoint pen of claim 1, wherein: the pen container also comprises an ink tube connected to the pen container, and the ink tube is communicated with the ink inlet.

5. The ballpoint pen of claim 4, wherein: the ink tube is rod-shaped, and one end of the ink tube is hinged to the pen container.

6. The ballpoint pen of claim 5, wherein: the pen container is provided with an accommodating space; the ink tube is movable between an open position and a storage position; when the ink tube is located at the accommodating position, the ink tube is accommodated in the accommodating space.

7. The ballpoint pen of claim 6, wherein: the accommodating space is an accommodating groove formed by the surface of the pen container in a concave mode.

8. The ballpoint pen of claim 7, wherein: a sealing element is arranged in the accommodating groove; when the ink tube is accommodated in the accommodation position, the sealing member seals the water inlet of the ink tube.

9. The ballpoint pen of any of claims 1 to 8, wherein: the traction mechanism comprises a pen cap and a connecting rod, and the pen cap is detachably connected to the pen container; one end of the connecting rod is connected to the pen cap, and the other end of the connecting rod is connected to the piston.

10. The ballpoint pen of claim 9, wherein: the connecting rod is in a hollow sleeve shape, and the connecting rod is sleeved on the water diversion core.