Marker pen with rear valve

Abstract

The utility model relates to a mark pen with a rear valve. The mark pen comprises a pen mouth, a pen holder and an ink storage cavity separating cylinder, an inner cavity of the pen holder comprises a first ink storage cavity, and the first ink storage cavity is located on the side close to the pen mouth. The first ink storage cavity is defined by the pen holder and the ink storage cavity separation cylinder. The pen holder comprises a transparent holder body, and the ink storage cavity separation cylinder comprises a transparent cylinder body; the transparent rod body and the transparent cylinder body form an observation window for a user to observe the ink storage amount in the first ink storage cavity from the outside to the inside. By means of the mark pen, when a user presses the rear valve mark pen to conduct ink outlet control, the ink storage amount condition of the first ink storage cavity can be directly seen through the observation window composed of the transparent rod body and the transparent barrel body, and therefore the pressing frequency and the pressing degree can be flexibly controlled according to the ink storage amount condition; therefore, the first ink storage cavity can be filled with ink as soon as possible as possible, ink explosion and ink leakage can be effectively avoided, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of marker pens, in particular to a rear valve marker pen. Background Art

[0002] A marker, also known as a permanent marker or marking pen, is a writing and drawing tool primarily used for marking and drawing. More specifically, depending on the position of the valve, they can be categorized as front-valve markers and rear-valve markers. Front-valve markers use a pen tip located at the front of the pen to compress the internal retractable structure, opening the ink outlet, ultimately releasing ink. Conversely, rear-valve markers use a retractable cap located at the back of the pen to push the rod downward, compressing the internal retractable structure and opening the ink outlet, ultimately releasing ink.

[0003] Patent No. CN218777341U discloses a valve pen. Specifically, by pressing the driver cap, the driver cap drives the blocking member downward, thereby separating the lower portion of the blocking member from the partition. At this time, the spring is in a compressed state and the through hole is open, and the ink in the first liquid storage chamber flows through the through hole into the second liquid storage chamber. When the amount of ink in the second liquid storage chamber reaches the amount required for writing, the driver cap is stopped, and the blocking member moves upward under the action of the spring to recover and stretch, so that the lower portion of the blocking member returns to its original position and re-blocks the through hole. At the same time, the driver cap is reset under the action of the blocking member. From the above, it can be found that when the user presses the back pressure valve to control the ink discharge, it is difficult to perceive the flow of liquid in the second liquid storage chamber. It is easy to press too frequently or too hard, resulting in ink bursting or leakage.

[0004] Therefore, there is still a need to improve the existing rear valve markers to solve the problem that the existing rear valve markers are prone to ink explosion and ink leakage due to improper control of the rear pressure valve. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a marker pen with a rear valve to solve the problem of ink explosion and ink leakage caused by improper control of the rear pressure valve in existing marker pens.

[0006] To achieve the above-mentioned objectives, the present invention provides a rear valve marker pen, comprising a pen tip, a pen barrel, and an ink storage chamber dividing tube; the inner cavity of the pen barrel comprises a first ink storage chamber, which is located on a side close to the pen tip; the first ink storage chamber is surrounded by the pen barrel and the ink storage chamber dividing tube; the pen barrel comprises a transparent rod body, and the ink storage chamber dividing tube comprises a transparent cylinder; the transparent rod body and the transparent cylinder constitute an observation window for a user to observe the amount of ink stored in the first ink storage chamber from the outside looking inward.

[0007] In some embodiments, the transparent rod body constitutes the grip section of the pen holder; the transparent cylinder body is in the shape of an elongated strip and extends along the axial direction of the ink storage chamber partition cylinder;

[0008] Or the portion of the ink storage chamber partition tube opposite to the gripping section of the pen shaft is the transparent cylinder; the transparent shaft is in the shape of an elongated strip and extends along the axial direction of the pen shaft.

[0009] In some embodiments, the transparent rod is in the shape of an elongated strip, and the width of the transparent rod gradually decreases from the front end to the rear end of the pen barrel.

[0010] In some embodiments, the transparent rod body is provided with multiple pieces, and is discretely arranged along the axial direction of the pen shaft.

[0011] In some embodiments, the transparent rod body gradually becomes smaller from the front end to the rear end of the pen shaft.

[0012] In some embodiments, the rear valve marker pen further comprises a pen tip; the pen barrel comprises a first separating ring extending in a radial direction; the first separating ring covers the pen tip;

[0013] The ink storage chamber separation tube includes a first tube body and a second tube body that are separately provided; the first separation ring covers the wider end of the first tube body, and the narrower end of the first tube body penetrates the wider end of the second tube body; the first ink storage chamber is surrounded by the first tube body and the pen tip;

[0014] The rear valve marker pen further includes a plug; the plug is movably arranged inside the first cylinder and the second cylinder, and is used to block the narrower end of the second cylinder.

[0015] In some embodiments, the pen body also includes a main rod body; the first separating ring is located inside the main rod body; the outer circumferential surface of the first cylinder body is formed with a cylinder annular rib, and the inner circumferential surface of the main rod body is formed with a rod annular rib that matches the cylinder annular rib.

[0016] In some embodiments, the annular rib of the cylinder is provided at at least one of an end of the first cylinder facing the pen tip, a middle portion of the first cylinder, and an end of the first cylinder facing away from the pen tip.

[0017] In some embodiments, the pen body also includes a main rod body; the first separating ring is located inside the main rod body; an annular rubber ring is fixedly provided on the outer circumference of the first cylinder body, and an annular groove adapted to the annular rubber ring is provided on the inner circumference of the main rod body.

[0018] In some embodiments, the rear valve marker pen further includes a pen tip; the ink storage chamber partition cylinder includes a third cylinder; the narrower end of the third cylinder faces the pen tip, and the third cylinder covers the pen tip;

[0019] The pen holder includes a second separating ring extending in a radial direction; the second separating ring covers the wider end of the third barrel; the first ink storage cavity is surrounded by the third barrel and the second separating ring;

[0020] The ink storage chamber separation cylinder further includes a fourth cylinder that is separate from the third cylinder, and the end of the second separation ring that is away from the third cylinder penetrates into the wider end of the fourth cylinder;

[0021] The rear valve marker pen further includes a plug; the plug is movably arranged inside the second separating ring and the fourth cylinder, and is used to block the narrower end of the fourth cylinder.

[0022] Compared with the existing technology, the beneficial effect of the present invention is that when the user presses the rear valve marker to control the ink discharge, the user can directly see the ink storage level of the first ink storage chamber through the observation window composed of the transparent rod and the transparent cylinder, and thus flexibly control the pressing frequency and pressing degree according to the ink storage level, so that the first ink storage chamber can be filled with ink as quickly and as much as possible, and ink explosion and leakage can be effectively avoided, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the rear valve marker provided by the utility model;

[0024] Figure 2 This is a front view of the rear valve marker provided by the utility model;

[0025] Figure 3 This is an example diagram of the internal structure of the rear valve marker provided by the present utility model;

[0026] Figures 4 and 5 This is an example diagram of various distributions of the observation window of the rear valve marker provided by the utility model;

[0027] Figure 6 This is another example diagram of the internal structure of the rear valve marker provided by the utility model;

[0028] Figure 7 This is an example diagram of the distribution of the annular ribs on the barrel and the stem of the rear valve marker provided by the present invention;

[0029] Figure 8 This is another example diagram of the internal structure of the rear valve marker provided by the utility model;

[0030] Figure 9 These are two exemplary distribution diagrams of the annular ribs on the barrel of the rear valve marker provided by the present invention;

[0031] Figure 10 This is an example diagram of the distribution of the annular rubber ring and the annular groove of the rear valve marker provided by the utility model;

[0032] Figure 11 This is another example diagram of the internal structure of the rear valve marker provided by the utility model. DETAILED DESCRIPTION

[0033] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0034] A marker, also known as a permanent marker or marking pen, is a writing and drawing tool primarily used for marking and drawing. More specifically, depending on the position of the valve, they can be categorized as front-valve markers and rear-valve markers. Front-valve markers use a pen tip located at the front of the pen to compress the internal retractable structure, opening the ink outlet, ultimately releasing ink. Conversely, rear-valve markers use a retractable cap located at the back of the pen to push the rod downward, compressing the internal retractable structure and opening the ink outlet, ultimately releasing ink.

[0035] With existing valve pens, when the user presses the back-pressure valve to control ink flow, it is difficult to sense the flow of liquid in the liquid reservoir. This can easily lead to ink bursting or leakage due to excessive pressure or excessive pressing. Therefore, existing back-valve markers are prone to ink bursting and leakage due to improper control of the back-pressure valve.

[0036] like Figures 1 to 3 As shown, the present invention provides a rear valve marker 1, comprising a nib 10, a barrel 20, and an ink storage chamber partition tube 30. The inner cavity of the barrel 20 includes a first ink storage chamber 280, which is located on a side close to the nib 10. The first ink storage chamber 280 is surrounded by the barrel 20 and the ink storage chamber partition tube 30. The barrel 20 includes a transparent rod body 201, and the ink storage chamber partition tube 30 includes a transparent cylinder body 301. The transparent rod body 201 and the transparent cylinder body 301 form an observation window for a user to observe the amount of ink stored in the first ink storage chamber 280 from the outside.

[0037] Compared with the prior art, with the rear valve marker pen 1 provided by the present invention, when the user presses the rear valve marker pen 1 to control the ink discharge, the user can directly see the ink storage level of the first ink storage chamber 280 through the observation window formed by the transparent rod body 201 and the transparent cylinder body 301, thereby flexibly controlling the pressing frequency and pressing degree according to the ink storage level, so that the first ink storage chamber 280 can be filled with ink as quickly and as much as possible, and ink explosion and leakage can be effectively avoided, thereby improving the user experience.

[0038] In addition, if Figure 3 As shown, the inner cavity of the pen body 20 also includes a second ink storage cavity 281. The ink storage cavity dividing tube 30 separates the first ink storage cavity 280 from the second ink storage cavity 281. The second ink storage cavity 281 serves as the main ink storage cavity, and the first ink storage cavity 280 serves as a buffer cavity. The capacity of the second ink storage cavity 281 is significantly larger than that of the first ink storage cavity 280. This arrangement is particularly suitable for acrylic marker ink that needs to be manually shaken before use to evenly mix the toner. After evenly mixing, the ink in the second ink storage cavity 281 is controlled to flow into the first ink storage cavity 280 for painting or writing.

[0039] It should be noted that in Figures 4 and 5 In order to better understand the position or shape of the observation window formed by the transparent rod body 201 and the transparent cylinder 301, a mesh pattern is used to mark the outer surface of the transparent rod body 201 and the transparent cylinder 301. The mesh pattern is only used to indicate the specific position or shape of the transparent rod body 201 and the transparent cylinder 301 and does not have any other limiting effect on the transparent rod body 201 and the transparent cylinder 301.

[0040] like Figure 4 As shown in Figure a, in some embodiments, the transparent rod 201 constitutes the grip section of the pen barrel 20; the transparent cylinder 301 is in the shape of an elongated strip and extends along the axial direction of the ink storage chamber separation cylinder 30; the observation window formed by the transparent rod 201 and the transparent cylinder 301 is wide on the outside and narrow on the inside. During the process of ink flowing into the first ink storage chamber 280, since the transparent cylinder 301 is only a small part of the ink storage chamber separation cylinder 30, that is, the first ink storage chamber 280 is only partially visible, the effect actually seen by the user is that the ink flows along the elongated transparent cylinder. The area (i.e., the transparent barrel 301) rises, focusing attention more closely. Furthermore, compared to the transparent shaft 201, which is only a small portion of the grip section and the transparent barrel 301, which is only a small portion of the ink reservoir separator 30, the transparent shaft 201 constitutes the entire grip section of the pen body 20. During installation, the ink reservoir separator 30 only needs to be inserted into the front end of the pen body 20 to ensure that the transparent barrel 301 faces the transparent shaft 201, forming an observation window. There is no need to rotate the transparent barrel 301 to a specific angle, thus reducing assembly difficulty. Furthermore, the partial visibility of the first ink reservoir 280 also enhances the aesthetics of the marker, especially for acrylic marker ink, which tends to delaminate after standing still.

[0041] like Figure 4 As shown in b, in some embodiments, the ink storage chamber partition tube 30 and the portion opposite to the grip section of the pen barrel 20 are both transparent cylinders; the transparent rod body 201 is long and extends along the axial direction of the pen barrel 20. The observation window formed by the transparent rod body 201 and the transparent cylinder 301 is narrow on the outside and wide on the inside. The basic effect and installation principle are similar to Figure 4 Similar to a in the above, I will not repeat it here. Figure 5 As shown in middle c, in some embodiments, the transparent rod body 201 is in the shape of an elongated strip, and the width of the transparent rod body 201 gradually decreases from the front end to the rear end of the pen body 20. Through the change in width, the user can have a more intuitive feeling of the ink shortage of the first ink storage chamber 280. When the ink is flush with the wider part of the transparent rod body 201, it indicates to the user that the current ink shortage is relatively high and the amount of ink can be increased. When the ink is flush with the narrower part of the transparent rod body 201, it indicates to the user that the current amount of ink is relatively sufficient and the amount of ink can be reduced. This is more conducive to the user to accurately control the pressing frequency and pressing degree.

[0042] like Figure 5 As shown in FIG. d, in some embodiments, the transparent rod body 201 is provided with multiple pieces, and is discretely arranged along the axial direction of the pen body 20. Furthermore, in some embodiments, the transparent rod body 201 gradually becomes smaller from the front end to the rear end of the pen body 20. The basic effect and use principle are similar to those of FIG. Figure 5 It is similar to c in the above text and will not be repeated here.

[0043] like Figures 1 to 3 As shown, in some embodiments, the pen barrel 20 is integrally formed. Integral forming can reduce the number of parts assembly steps and help ensure that the performance is consistent.

[0044] like Figure 1 and Figure 6 As shown, in some embodiments, the rear valve marker pen 1 further includes a nib 40; the pen body 20 includes a first separator ring 202 extending in a radial direction; the first separator ring 202 encloses the nib 40; the ink storage chamber separator cylinder 30 includes a first barrel 302 and a second barrel 303, which are separately provided; the first separator ring 202 covers the wider end of the first barrel 302, and the narrower end of the first barrel 302 penetrates the wider end of the second barrel 303; the first ink storage chamber 280 is surrounded by the first barrel 302 and the nib 40; the rear valve marker pen 1 further includes a plug 501; the plug 501 is movably disposed within the first barrel 302 and the second barrel 303, and is used to seal the narrower end of the second barrel 303. The separate configuration of the first barrel 302 and the second barrel 303 facilitates installation of the plug 501, reducing assembly difficulty.

[0045] Furthermore, in some embodiments, the first cylinder 302 is integrally formed, which can reduce the number of parts assembly steps and help ensure consistent performance.

[0046] like Figures 6 and 7 As shown, in some embodiments, the pen body 20 further includes a main body 203; the first separation ring 202 is located inside the main body 203; the outer circumferential surface of the first cylinder 302 is formed with a cylinder annular rib 304, and the inner circumferential surface of the main body 203 is formed with a rod annular rib 204 that matches the cylinder annular rib 304. After the first cylinder 302 is inserted into the main body 203, the cylinder annular rib 304 and the rod annular rib 204 are abutted against each other to achieve an interference fit between the first cylinder 302 and the main body 203, which is convenient to install and has a simple structure. Furthermore, as Figure 8 As shown, in some embodiments, the pen holder 20 further includes a tail cylinder 205 and an end cap 206. One end of the tail cylinder 205 is inserted into the main rod body 203 and has an interference fit therewith. The other end of the tail cylinder 205 is inserted into the end cap 206 and has an interference fit therewith. The interference fit can adopt an annular rib similar to the above. In addition, as Figure 3 and Figure 8 As shown, the rear valve marker 1 also includes a rear valve assembly 50. In addition to the plug 501, the rear valve assembly 50 also includes a spring (not shown in the figure), a connecting tube 502, a silicone sheet 503, and a pressing cap 504. The plug 501 is movably inserted into the ink storage chamber separation cylinder 30, and the spring presses against the skirt of the plug 501. After the user releases the pressing 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 presses against the silicone sheet 503. The outer edge / outer circumference of the silicone sheet 503 is fixed to the inside of the tail cylinder 205. The pressing cap 504 is movably inserted into the end cover 206 and can be pressed by the user to control the outflow of ink.

[0047] like Figure 6 、 Figure 7 as well as Figure 9 As shown, in some embodiments, an annular rib 304 is provided at least one of the end of the first barrel 302 facing the pen tip 10, the middle of the first barrel 302, and the end of the first barrel 302 facing away from the pen tip 10. Preferably, the annular rib 304 is provided only at the end of the first barrel 302 facing away from the pen tip 10. This not only achieves an interference fit with the main rod 203, but also prevents ink from seeping from the end of the first barrel 302 facing away from the pen tip 10 into the space between the outer wall of the first barrel 302 and the inner wall of the main rod 203, thereby interfering with the user's viewing experience. Preferably, the annular rib 304 is provided at both ends of the first barrel 302. This not only achieves an interference fit with the main rod 203, but also prevents ink from seeping from both ends into the space between the outer wall of the first barrel 302 and the inner wall of the main rod 203, further enhancing the anti-interference effect.

[0048] like Figure 7 As shown, in some embodiments, the pen body 20 also includes a main rod body 203; the first separating ring 202 is located inside the main rod body 203; the outer circumferential surface of the first cylinder 302 is fixedly provided with an annular rubber ring 60, and the inner circumferential surface of the main rod body 203 is provided with an annular groove 282 adapted to the annular rubber ring 60. With the help of the cooperation between the annular rubber ring 60 and the annular groove 282, the first cylinder 302 and the main rod body 203 can be firmly assembled and ink can be prevented from seeping in.

[0049] like Figure 1 and Figure 11 As shown, in some embodiments, the rear valve marker pen 1 further includes a pen tip 40; the ink storage chamber separation cylinder 30 includes a third cylinder 305; the narrower end of the third cylinder 305 faces the pen tip 10, and the third cylinder 305 covers the pen tip 40; the pen body 20 includes a second separation ring 205 extending in the radial direction; the second separation ring 205 covers the wider end of the third cylinder 305; the first ink storage chamber 280 is surrounded by the third cylinder 305 and the second separation ring 205; the ink storage chamber separation cylinder 30 further includes a fourth cylinder 306 that is separately provided from the third cylinder 305, and the end of the second separation ring 205 facing away from the third cylinder 305 penetrates into the wider end of the fourth cylinder 306; the rear valve marker pen 1 further includes a plug 501; the plug 501 is movably arranged inside the second separation ring 205 and the fourth cylinder 306, and is used to seal the narrower end of the fourth cylinder 306. Because the third barrel 305 is separated by the second separation ring 205 and does not directly contact the second ink storage chamber 281, ink can be effectively prevented from seeping between the outer wall of the third barrel 305 and the inner wall of the main rod 203. Furthermore, in some embodiments, the third barrel 305 is integrally formed, which can reduce the number of parts assembly steps and help ensure consistent performance.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear-valve marker pen, comprising a tip, a barrel, and an ink reservoir separator; the barrel's inner cavity includes a first ink reservoir, the first ink reservoir being located on a side adjacent to the tip; and characterized in that: The first ink storage chamber is surrounded by the pen shaft and the ink storage chamber partition tube; the pen shaft includes a transparent rod body, and the ink storage chamber partition tube includes a transparent cylinder body; the transparent rod body and the transparent cylinder body constitute an observation window for a user to observe the amount of ink stored in the first ink storage chamber from the outside to the inside.

2. The rear valve marker pen according to claim 1, characterized in that: The transparent rod body constitutes the grip section of the pen holder; the transparent cylinder body is in the shape of an elongated strip and extends along the axial direction of the ink storage chamber partition cylinder; Or the portion of the ink storage chamber partition tube opposite to the gripping section of the pen shaft is the transparent cylinder; the transparent shaft is in the shape of an elongated strip and extends along the axial direction of the pen shaft.

3. The rear valve marker pen according to claim 2, characterized in that: The transparent rod body is in the shape of an elongated strip, and the width of the transparent rod body gradually decreases from the front end to the rear end of the pen body.

4. The rear valve marker pen according to claim 1, characterized in that: The transparent rod body is provided with multiple pieces, and is discretely arranged along the axial direction of the pen shaft.

5. The rear valve marker pen according to claim 4, characterized in that: The transparent rod body gradually becomes smaller from the front end to the rear end of the pen shaft.

6. A rear valve marker pen according to any one of claims 1 to 5, characterized in that: The rear valve marker pen further comprises a pen tip; the pen barrel comprises a first separating ring extending in a radial direction; the first separating ring covers the pen tip; The ink storage chamber separation tube includes a first tube body and a second tube body that are separately provided; the first separation ring covers the wider end of the first tube body, and the narrower end of the first tube body penetrates the wider end of the second tube body; the first ink storage chamber is surrounded by the first tube body and the pen tip; The rear valve marker pen further includes a plug; the plug is movably arranged inside the first cylinder and the second cylinder, and is used to block the narrower end of the second cylinder.

7. The rear valve marker pen according to claim 6, characterized in that: The pen body also includes a main rod body; the first separating ring is located inside the main rod body; the outer circumferential surface of the first cylinder body is formed with a cylinder annular rib, and the inner circumferential surface of the main rod body is formed with a rod annular rib that matches the cylinder annular rib.

8. The rear valve marker pen according to claim 7, characterized in that: The cylinder annular rib is provided at at least one of the end of the first cylinder facing the pen tip, the middle of the first cylinder, and the end of the first cylinder away from the pen tip.

9. The rear valve marker pen according to claim 6, characterized in that: The pen barrel also includes a main rod body; the first separating ring is located inside the main rod body; an annular rubber ring is fixedly provided on the outer circumference of the first cylinder body, and an annular groove adapted to the annular rubber ring is provided on the inner circumference of the main rod body.

10. A rear valve marker pen according to any one of claims 1 to 5, characterized in that: The rear valve marker pen also includes a pen tip; the ink storage chamber separation cylinder includes a third cylinder; the narrower end of the third cylinder faces the pen tip, and the third cylinder covers the pen tip; The pen holder includes a second separating ring extending in a radial direction; the second separating ring covers the wider end of the third barrel; the first ink storage cavity is surrounded by the third barrel and the second separating ring; The ink storage chamber separation cylinder further includes a fourth cylinder that is separate from the third cylinder, and the end of the second separation ring that is away from the third cylinder penetrates into the wider end of the fourth cylinder; The rear valve marker pen further includes a plug; the plug is movably arranged inside the second separating ring and the fourth cylinder, and is used to block the narrower end of the fourth cylinder.

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