Post-pressing valve type mark pen

Abstract

The invention relates to a rear pressure valve type mark pen which comprises a pen holder and an ink storage cavity separation cylinder. An inner cavity of the pen holder comprises a first ink storage cavity and a second ink storage cavity which are separated by an ink storage cavity separation cylinder, and the first ink storage cavity is located at the front end. The rear pressure valve type mark pen further comprises a stirring assembly and a plug. The stirring assembly is located in the first ink storage cavity. The stirring assembly is connected with the plug and is driven by the plug to stir ink. According to the mark pen, ink can be better stirred and mixed uniformly, and the mark pen is particularly suitable for propylene mark pen ink which is prone to toner sedimentation.

Description

Technical Field

[0001] The invention relates to the technical field of marker pens, and in particular to a rear-pressure valve type marker pen. Background Art

[0002] Marker pens, also known as marker pens or marking pens, are a type of writing and drawing tool, mainly used for marking and drawing. More specifically, marker pens can be divided into front-pressure valve-type marker pens and rear-pressure valve-type marker pens according to the position of the valve. Front-pressure valve-type marker pens refer to the pen tip at the front end of the marker pen, which compresses the internal retractable structure and opens the ink outlet channel to finally discharge ink. On the contrary, rear-pressure valve-type marker pens refer to the movable cap at the rear end of the marker pen, which pushes the rod downward, thereby compressing the internal retractable structure and opening the ink outlet channel to finally discharge ink.

[0003] Patent No. CN218777341U discloses a valve pen. Specifically, by pressing the driving cap, the driving cap drives the blocking member to move downward, so that the lower part of the blocking member is separated from the partition. At this time, the spring is in a compressed state and the through hole is open. The ink in the first liquid storage chamber flows into the second liquid storage chamber through the through hole. A number of stirring members are integrally connected to the side of the extension rod. It can be seen that the stirring area targeted by the stirring member is the first liquid storage chamber, and the ink used by the user when writing comes directly from the second liquid storage chamber. When the user presses the driving cap, the ink in the first liquid storage chamber will flow to the second liquid storage chamber naturally under the influence of gravity. It is easy for the ink to flow into the second liquid storage chamber without being mixed evenly, thereby causing a decrease in writing performance, especially for acrylic marker ink that is prone to color powder sedimentation.

[0004] Therefore, there is still a need to improve the existing rear-pressure valve type marker pen to solve the problem that the ink used for writing is easily mixed unevenly. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a rear-pressure valve type marker pen to solve the problem that the ink used for writing is easily mixed unevenly.

[0006] To achieve the above-mentioned purpose, the present invention provides a rear-pressure valve type marker pen, comprising a pen body and an ink storage chamber dividing tube; the inner cavity of the pen body comprises a first ink storage chamber and a second ink storage chamber separated by the ink storage chamber dividing tube, and the first ink storage chamber is located at the front end; the rear-pressure valve type marker pen also includes a stirring component and a plug; the stirring component is located inside the first ink storage chamber; the stirring component is connected to the plug and is driven by the plug to stir the ink.

[0007] In some embodiments, the stirring assembly includes a screen adapted to the first ink storage chamber; the screen is coaxially fixed to the plug.

[0008] In some embodiments, the mesh plate is higher in the middle and lower around the side facing the plug.

[0009] In some embodiments, the stirring assembly includes a spring, a bearing ring, and at least two swing arms; the spring and the bearing ring are coaxial with the pen holder; one end of the spring presses against the inner wall of the first ink storage chamber, and the other end presses against the bearing ring; each of the swing arms is mounted on the plug and is evenly distributed around the circumference; the swing arm is inclined outward, and one end of the swing arm that is away from the plug presses against a side of the bearing ring that is away from the spring;

[0010] The stirring assembly also includes a blocking assembly; the blocking assembly is used to block each of the swing arms when the swing arms swing to be perpendicular to the pen barrel.

[0011] In some embodiments, the stirring assembly further comprises a connecting piece coaxially fixed with the plug; the edge of the connecting piece is provided with a connecting port corresponding to the swing arm one by one; a rotating shaft is formed inside the connecting port; and a bayonet adapted to the rotating shaft is formed at the end of the swing arm;

[0012] The blocking assembly includes convex ridges corresponding to the swing arms one by one; the convex ridges are fixed on the rotating shaft and are used to block the swing arms.

[0013] In some embodiments, the stirring assembly includes a rotating cylinder coaxial with the pen shaft; the side wall of the rotating cylinder is provided with a rotating drive groove extending from top to bottom; the rotating drive groove is arc-shaped; the stirring assembly also includes a rotating drive rod adapted to the rotating drive groove; the rotating drive rod is perpendicular to the pen shaft and fixed to the plug; the end of the rotating cylinder facing away from the plug has fins formed on the inner wall.

[0014] In some embodiments, the rotary drive rod passes through the rotating cylinder.

[0015] In some embodiments, the rotary drive rod does not contact the side wall of the first ink storage chamber.

[0016] In some embodiments, the rotating cylinder divides the first ink storage chamber into an outer cavity and an inner cavity; the outer cavity is surrounded by the side wall of the first ink storage chamber and the outer circular surface of the rotating cylinder; the inner cavity is surrounded by the inner circular surface of the rotating cylinder; a through hole is provided at the end of the rotating cylinder away from the plug; the through hole connects the outer cavity and the inner cavity; the fins are provided in multiple pieces, and the through hole is provided between two adjacent fins.

[0017] In some embodiments, an inner wall of the first ink storage chamber is provided with an alignment groove adapted to the rotating cylinder.

[0018] Compared with the prior art, the invention has the beneficial effect of better stirring the ink and making it mix evenly, and is particularly suitable for acrylic marker ink that is prone to color powder sedimentation. Specifically, when the user presses the rear end of the valve-type marker pen to make the ink in the second ink storage chamber flow into the first ink storage chamber, the stirring component will move with the plug to directly stir and mix the ink in the first ink storage chamber for the user to write, providing a better writing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the rear pressure valve type marker pen provided by the present invention;

[0020] Figures 2 to 3 It is a schematic diagram of the internal structure of the rear pressure valve type marker pen provided by the present invention;

[0021] Figures 4 to 5 It is a structural schematic diagram of a stirring assembly of a rear pressure valve type marker pen provided by the present invention;

[0022] Figure 6 to Figure 7 This is another structural schematic diagram of the stirring assembly of the rear pressure valve type marker pen provided by the present invention;

[0023] Figures 8 to 10 This is another structural schematic diagram of the stirring assembly of the rear pressure valve type marker pen provided by the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Marker pens, also known as marker pens or marking pens, are a type of writing and drawing tool, mainly used for marking and drawing. More specifically, marker pens can be divided into front-pressure valve-type marker pens and rear-pressure valve-type marker pens according to the position of the valve. Front-pressure valve-type marker pens refer to the pen tip at the front end of the marker pen, which compresses the internal retractable structure and opens the ink outlet channel to finally discharge ink. On the contrary, rear-pressure valve-type marker pens refer to the movable cap at the rear end of the marker pen, which pushes the rod downward, thereby compressing the internal retractable structure and opening the ink outlet channel to finally discharge ink.

[0026] In the prior art, the stirring area targeted by the stirring member is the first liquid storage chamber, and the ink used by the user when writing comes directly from the second liquid storage chamber. When the user controls the ink discharge by pressing, the ink in the first liquid storage chamber will naturally flow to the second liquid storage chamber under the influence of gravity. It is easy for the ink to flow into the second liquid storage chamber without being evenly mixed, thereby resulting in a decrease in writing performance, especially for acrylic marker ink that is prone to color powder sedimentation.

[0027] As an example, Figures 1 to 3 As shown, the rear pressure valve type marker pen 1 includes a pen tip 10, a pen tip 20, a pen body 30, an ink storage chamber partition cylinder 40 and a rear valve assembly 50. Specifically:

[0028] Regarding the nib 10 and the nib 20 , the nib 10 penetrates into the nib 20 and has an interference fit therewith.

[0029] The pen body 30 includes a separator ring 300, a main body tube 301, a tail cylinder 302, and an end cover 303. The separator ring 300 is formed at the front end of the main body tube 301. One end of the tail cylinder 302 is inserted into the main body tube 301 and has an interference fit therewith. The other end of the tail cylinder 302 is inserted into the end cover 303 and has an interference fit therewith. In addition, the inner cavity of the pen body 30 includes a first ink storage cavity 380 and a second ink storage cavity 381. The second ink storage cavity 381 serves as the main ink storage cavity, and the first ink storage cavity 380 serves as a buffer cavity. The capacity of the second ink storage cavity 381 is significantly larger than that of the first ink storage cavity 380. This arrangement is particularly suitable for acrylic marker ink that needs to be manually shaken before use to mix the toner evenly. After mixing evenly, the ink in the second ink storage cavity 381 is controlled to flow into the first ink storage cavity 380 for painting or writing.

[0030] Regarding the ink storage chamber partition cylinder 40, it includes a first cylinder 400 and a second cylinder 401 which are separately arranged; the partition ring 300 covers the wider end of the first cylinder 400, and the narrower end of the first cylinder 400 penetrates into the wider end of the second cylinder 401; the first ink storage chamber 380 is surrounded by the first cylinder 400 and the partition ring 300.

[0031] The rear valve assembly 50 includes a plug 501, a spring (not shown in the figure), a connecting tube 502, a silicone sheet 503, and a movable cap 504. The plug 501 is movably inserted into the second cylinder 401, and the spring abuts against the skirt of the plug 501. After the user loosens the movable cap 504, the spring provides a reset force for the plug 501. One end of the connecting tube 502 is for the plug 501 to penetrate and fix, and the other end of the connecting tube 502 abuts against the silicone sheet 503. The outer edge / outer circumference of the silicone sheet 503 is fixed to the interior of the tail cylinder 302. The movable cap 504 is movably inserted into the end cover 303 and can be pressed by the user to control the outflow of ink.

[0032] The embodiment of the present invention provides a rear pressure valve type marker pen 1, such as Figure 2 As shown, it includes a pen body 30 and an ink storage chamber dividing tube 40; the inner cavity of the pen body 30 includes a first ink storage chamber 380 and a second ink storage chamber 381 separated by the ink storage chamber dividing tube 40, and the first ink storage chamber 380 is located at the front end; the rear pressure valve type marker pen 1 also includes a stirring component 60 and a plug 501; the stirring component 60 is located inside the first ink storage chamber 380; the stirring component 60 is connected to the plug 501, and is driven by it to stir the ink.

[0033] Compared with the prior art, the back-pressure valve marker pen 1 provided in this embodiment can better stir the ink and mix it evenly, and is particularly suitable for acrylic marker ink that is prone to color powder sedimentation. Specifically, when the user presses the rear end of the back-pressure valve marker pen 1 to make the ink in the second ink storage chamber 381 flow into the first ink storage chamber 380, the stirring component 60 will move with the plug 501 to directly stir and mix the ink in the first ink storage chamber 380 for the user to write, providing a better writing experience.

[0034] like Figure 2 As shown, in some embodiments, the stirring assembly 60 includes a screen 601 adapted to the first ink storage chamber 380; the screen 601 is coaxially fixed with the plug 501, and when the ink flows downward into the first ink storage chamber 380, the screen 601 has a diversion effect on it, which can play a first stirring and mixing role. When the ink is concentrated at the front end of the first ink storage chamber 380 (that is, the position close to the writing end), the screen 601 is pressed down, which will play a second stirring and mixing role on the concentrated ink, thereby effectively improving the uniformity of the ink. In addition, the screen 601 has a simple structure, is easy to process, and has a low production cost.

[0035] Furthermore, if Figures 4 to 5 As shown, in some embodiments, the screen 601 is high in the middle and low around the side facing the plug 501. When the screen 601 follows the plug 501 to reset (i.e., move upward), the inclined structure of the screen 601 can increase the speed of ink returning to the first ink storage chamber 380, while reducing the amount of ink brought back to the second ink storage chamber 381.

[0036] In addition, (1) preferably, the screen 601 and the plug 501 are integrally formed, which can reduce the number of assembly steps. (2) The shapes of the holes in the screen 601 include, but are not limited to, circular, diamond-shaped, and rounded rectangular holes. In addition, since the main function of the middle area of ​​the screen 601 is to be fixedly connected to the plug and not to promote ink mixing, the middle area may not be punched, and only the edges or periphery of the screen may be punched. (3) preferably, the thickness of the thinnest part of the screen 601 is 0.7-1.2 mm, the thickness of the thickest part is 1.5-2 mm, and the inclination angle is 3-15°.

[0037] like Figure 6As shown, in some embodiments, the stirring assembly 60 includes a spring (not shown in the figure), a load-bearing ring 603, and at least two swing arms 604; the spring and the load-bearing ring 603 are coaxial with the pen body 30; one end of the spring presses against the inner wall of the first ink storage chamber 380, and the other end presses against the load-bearing ring 603; each swing arm 604 is installed on the plug 501 and is evenly distributed around the circumference; the swing arm 604 is inclined outward, and the end facing away from the plug 501 presses against the side of the load-bearing ring 603 facing away from the spring; the stirring assembly 60 also includes a blocking assembly; the blocking assembly is used to block each swing arm 604 when each swing arm 604 swings to be perpendicular to the pen body. When in use, the swing arm 604 follows the plug 501 downward, pressing the load ring 603 downward, thereby compressing the spring. The swing arm 604 is subjected to the reverse force of the load ring 603 and swings upward until it is perpendicular to the pen barrel 30 and is in a stable state. As the plug 501 continues to descend, the swing arm 604 can stir the ink in a stable state; the load ring 603 provides a force application position for the swing arm 604 and the spring, ensuring the pressing stability of the swing arm 604 and also stirring the ink. Since the load ring 603 is a hollow structure, when the load ring 603 is reset (i.e., upward), the ink will not be brought back to the second ink storage chamber 381; in addition, which is obviously different from the structure of the mesh plate 601 mentioned above, the spring in the first ink storage chamber 380 can replace the spring originally located in the second cylinder 401, that is, there is no need to set a spring in the second cylinder 401, and the spring in the first ink storage chamber 380 can complete the reset of the plug 501.

[0038] like Figure 7 As shown, in some embodiments, the stirring assembly 60 further includes a connecting piece 605 coaxially fixed with the plug 501; the edge of the connecting piece 605 is provided with a connecting port 680 corresponding to the swing arm 604; the interior of the connecting port 680 is formed with a rotating shaft 606; the end of the swing arm 604 is formed with a bayonet 607 adapted to the rotating shaft 606; the connecting piece 605 is added, and since the connecting piece 605 is wider than the plug 501, more installation positions can be provided, thereby reducing the difficulty of connecting the swing arm 604 with the plug 501, the bayonet 607 cooperates with the rotating shaft 606 to achieve a swing connection, and facilitate the disassembly and assembly of the swing arm 604. The blocking assembly includes a convex ridge 608 corresponding to the swing arm 604; the convex ridge 608 is fixed on the rotating shaft 606 and is used to block the swing arm 604. The use of this structure for position limiting has a simple structure.

[0039] In addition, (1) preferably, the connecting piece 605 is integrally formed with the plug 501. (2) preferably, as Figure 6 As shown, bosses 382 are formed on both sides of the inner wall of the first ink storage chamber 380. After the spring is placed in, the two bosses 382 can cooperate to position the spring, further improving the activity stability of the spring. (3) Preferably, the ridge 608 and the shaft 606 are integrally formed.

[0040] like Figure 8 , Fig.10 As shown, in some embodiments, the stirring assembly 60 includes a rotating cylinder 609 coaxial with the pen holder 30; the side wall of the rotating cylinder 609 is provided with a rotating driving groove 681 extending from top to bottom; the rotating driving groove 681 is arc-shaped; the stirring assembly 60 also includes a rotating driving rod 610 adapted to the rotating driving groove 681; the rotating driving rod 610 is perpendicular to the pen holder 30 and fixed to the plug 501; the end of the rotating cylinder 609 away from the plug 501 is formed with a fin 611 on the inner wall. When in use, the rotating driving rod 610 follows the plug 501 downward and presses the rotating cylinder 609 downward. Through the cooperation of the rotating driving groove 681 and the rotating driving rod 610, the downward movement of the rotating driving rod 610 can be converted into the rotation of the rotating cylinder 609, thereby driving the rotation of the fin 611, realizing the stirring and mixing of the ink in the first ink storage chamber 380, thereby improving the uniformity of the ink.

[0041] like Figures 8 to 9 As shown, in some embodiments, the rotary drive rod 610 passes through the rotating cylinder 609, so that the fitting area between the rotary drive rod 610 and the rotary drive groove 681 is maximized, thereby making it easier to drive the rotating cylinder 609 to rotate. The rotary drive rod 610 does not contact the side wall of the first ink storage chamber 380, thereby reducing the friction between the rotary drive rod 610 and the side wall of the first ink storage chamber 380.

[0042] like Figure 8 As shown, in some embodiments, the rotating cylinder 609 divides the first ink storage chamber 380 into an outer cavity 383 and an inner cavity 384; the outer cavity 383 is surrounded by the side wall of the first ink storage chamber 380 and the outer circular surface of the rotating cylinder 609; the inner cavity 384 is surrounded by the inner circular surface of the rotating cylinder 609; a through hole 682 is provided at the end of the rotating cylinder 609 away from the plug 501; the through hole 682 connects the outer cavity 383 and the inner cavity 384, so that ink can flow freely in the outer cavity 383 and the inner cavity 384, and the ink in the outer cavity 383 can enter the inner cavity 384 and finally flow to the pen core 10 for the user to write; there are multiple fins 611, and through holes 682 are provided between two adjacent fins 611, which are staggered and distributed to facilitate the free flow of ink.

[0043] In addition, if Figure 8 As shown, the first ink storage chamber 380 is provided with an alignment groove 480 adapted to the rotating cylinder 609 for convenient and quick alignment.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear pressure valve type marker pen, comprising a pen holder and an ink storage chamber separation cylinder; the inner cavity of the pen holder comprises a first ink storage chamber and a second ink storage chamber separated by the ink storage chamber separation cylinder, and the first ink storage chamber is located at the front end; the rear pressure valve type marker pen also comprises a stirring assembly and a plug; characterized in that: The stirring component is located inside the first ink storage cavity; the stirring component is connected to the plug and is driven by the plug to stir the ink.

2. The rear-pressure valve type marker pen according to claim 1, characterized in that: The stirring assembly includes a screen plate adapted to the first ink storage cavity; the screen plate is coaxially fixed with the plug.

3. The rear-pressure valve type marker pen according to claim 2, characterized in that: The mesh plate is located on one side facing the plug, with the middle being higher and the surroundings being lower.

4. The rear-pressure valve type marker pen according to claim 1, characterized in that: The stirring assembly comprises a spring, a bearing ring, and at least two swing arms; the spring and the bearing ring are coaxial with the pen holder; one end of the spring presses against the inner wall of the first ink storage cavity, and the other end presses against the bearing ring; each of the swing arms is mounted on the plug and is evenly distributed around the circumference; the swing arm is inclined outward, and one end of the swing arm that is away from the plug presses against the side of the bearing ring that is away from the spring; The stirring assembly also includes a blocking assembly; the blocking assembly is used to block each of the swing arms when the swing arms swing to be perpendicular to the pen barrel.

5. The rear-pressure valve type marker pen according to claim 4, characterized in that: The stirring assembly also includes a connecting piece coaxially fixed with the plug; the edge of the connecting piece is provided with a connecting port corresponding to the swing arm one by one; a rotating shaft is formed inside the connecting port; and a bayonet adapted to the rotating shaft is formed at the end of the swing arm; The blocking assembly includes convex ridges corresponding to the swing arms one by one; the convex ridges are fixed on the rotating shaft and are used to block the swing arms.

6. The rear-pressure valve type marker pen according to claim 1, characterized in that: The stirring assembly includes a rotating cylinder coaxial with the pen shaft; the side wall of the rotating cylinder is provided with a rotating drive groove extending from top to bottom; the rotating drive groove is arc-shaped; the stirring assembly also includes a rotating drive rod adapted to the rotating drive groove; the rotating drive rod is perpendicular to the pen shaft and fixed to the plug; the end of the rotating cylinder facing away from the plug has fins formed on the inner wall.

7. The rear-pressure valve type marker pen according to claim 6, characterized in that: The rotary drive rod passes through the rotary cylinder.

8. The rear-pressure valve type marker pen according to claim 7, characterized in that: The rotation driving rod does not contact the side wall of the first ink storage chamber.

9. The rear-pressure valve type marker pen according to claim 8, characterized in that: The rotating cylinder divides the first ink storage cavity into an outer cavity and an inner cavity; the outer cavity is surrounded by the side wall of the first ink storage cavity and the outer circumferential surface of the rotating cylinder; the inner cavity is surrounded by the inner circumferential surface of the rotating cylinder; a through hole is provided at the end of the rotating cylinder away from the plug; the through hole connects the outer cavity and the inner cavity; a plurality of fins are provided, and the through hole is provided between two adjacent fins.

10. The rear-pressure valve type marker pen according to claim 6, characterized in that: The inner wall of the first ink storage cavity is provided with an alignment groove adapted to the rotating cylinder.

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