Post-pressing valve type mark pen and using method thereof

Abstract

The invention relates to a rear pressure valve type mark pen and a use method thereof. The mark pen comprises a pen holder, an ink storage cavity separation cylinder and a movable cap. An inner cavity of the penholder comprises a first ink storage cavity; the glove further comprises a thumb attaching area and a rear-end finger attaching area, the thumb attaching area is used for positioning a thumb, and the rear-end finger attaching area is used for positioning a rear-end finger; the pen holder and the ink storage cavity separation cylinder are matched to form a first observation window and a second observation window. The first observation window and the second observation window are distributed in the circumferential direction of the pen holder, and the included angle between the first observation window and the second observation window ranges from 90 degrees to 180 degrees. The first observation window is used for allowing a user to observe the ink storage amount of the first ink storage cavity when the user presses the movable cap with the thumb. The second observation window is used for the user to observe the ink storage amount of the first ink storage cavity when the user presses the movable cap with the index finger. According to the mark pen, various ink outlet control selections are provided for a user, the ink storage amount condition can be observed in various modes, corresponding pen holding posture guiding is carried out, and more accurate ink outlet control is achieved.

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 and a use method thereof. 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 piece to move downward, so that the lower part of the blocking piece is separated 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 into the second liquid storage chamber through the through hole; when the amount of ink in the second liquid storage chamber reaches the amount required for writing, stop pressing the driving cap, so that the blocking piece moves upward under the action of the spring recovery and extension, so that the lower part of the blocking piece is reset and the through hole is re-blocked, and the driving cap is reset under the action of the blocking piece. From the above content, it can be found that it is difficult for users to accurately control the ink discharge according to different pressing conditions, resulting in a poor user experience.

[0004] Therefore, there is still a need to improve the existing rear-pressure valve marker pens to solve the problem of poor user experience caused by the difficulty in accurately controlling the ink output according to different pressing conditions. 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 and a method of using the same, so as to solve the problem that it is difficult to accurately control the ink discharge according to different pressing conditions, resulting in a poor user experience.

[0006] To achieve the above objectives:

[0007] The present invention provides a rear pressure valve type marker pen, comprising a pen holder, an ink storage chamber separation tube, and a movable cap; the inner cavity of the pen holder comprises a first ink storage chamber located at the front end; the rear pressure valve type marker pen further comprises a thumb fitting area and a rear end finger fitting area, the thumb fitting area is used to position the thumb when the user presses the movable cap with the index finger, and the rear end finger fitting area is used to position the rear end finger when the user presses the movable cap with the thumb;

[0008] The pen barrel and the ink storage chamber partition tube cooperate to form a first observation window and a second observation window; the first observation window and the second observation window are distributed around the circumference of the pen barrel, and the angle between them is 90° to 180°; the first observation window is used for allowing the user to observe the ink storage amount of the first ink storage chamber from the outside to the inside when the user presses the movable cap with the thumb; the second observation window is used for allowing the user to observe the ink storage amount of the first ink storage chamber from the outside to the inside when the user presses the movable cap with the index finger.

[0009] In some embodiments, the thumb fitting area is a concave area or a surrounding area; the rear end finger fitting area is a concave area or a surrounding area.

[0010] In some embodiments, the thumb fitting area and the rear end finger fitting area are both located on the pen shaft.

[0011] In some embodiments, the rear-pressure valve-type marker pen further includes a movable ring detachably mounted on the pen barrel; the thumb fitting area and the rear-end finger fitting area are both located on the movable ring.

[0012] In some embodiments, the movable ring has two thumb fitting areas of unequal size and two rear end finger fitting areas of unequal size; there is a rear end finger fitting area between two adjacent thumb fitting areas; the movable ring rotates coaxially with the pen shaft; the outer cylindrical surface of the pen shaft is formed with a convex column extending along its radial direction; at least one of the first observation window and the second observation window corresponds to the convex column; the front end of the movable ring is provided with an alignment groove adapted to the convex column.

[0013] In some embodiments, the movable ring includes a main ring body and auxiliary ring bodies distributed at both ends of the main ring body; the main ring body is a hard ring, and the auxiliary ring body is a rubber ring; the auxiliary ring body is fixed to the ends of the main ring body.

[0014] In some embodiments, the thumb fitting area and the rear finger fitting area are both surrounding point areas; only one of the thumb fitting area and the rear finger fitting area is provided with a magnetic surrounding point component;

[0015] The magnetic surrounding point assembly includes a connecting plate and two movable surrounding points; the connecting plate and the movable surrounding points attract each other; the length direction of the connecting plate is the same as the axial direction of the pen shaft; the connecting plate is embedded in the movable ring; the two movable surrounding points are distributed at both ends of the connecting plate.

[0016] In some embodiments, the first observation window and the second observation window are of equal height, and the width of the first observation window is greater than the width of the second observation window;

[0017] Or the first observation window is provided with a plurality of first scale lines distributed along its height direction, the second observation window is provided with a plurality of second scale lines distributed along its height direction, and the spacing between two adjacent first scale lines is greater than the spacing between two adjacent second scale lines.

[0018] The present invention also provides a method for using a rear-pressure valve type marker pen, comprising the following steps:

[0019] S1, according to the current ink feeding control mode, select one of the thumb fitting zone and the rear finger fitting zone as a fitting zone; wherein the current ink feeding control mode is index finger pressing or thumb pressing;

[0020] S2, when the selected fitting area is the thumb fitting area, placing the thumb on the thumb fitting area, with the rear finger placed at a position opposite to the thumb fitting area;

[0021] When the fitting area is the rear finger fitting area, the rear finger is placed on the rear finger fitting area, and the index finger is placed above the rear finger.

[0022] In some embodiments, the rear pressure valve type marker pen comprises a pen holder and a movable ring, wherein the movable ring comprises a main ring body and auxiliary ring bodies distributed at both ends of the main ring body; the main ring body is a hard ring, and the auxiliary ring body is a rubber ring; the auxiliary ring body is fixed to the end of the main ring body;

[0023] Before step S1, the method further includes:

[0024] S3, lift up the auxiliary ring body, put the main ring body on the pen body, after the main ring body slides to the specified position, turn down the auxiliary ring body to make it fit on the pen body, so as to fix the movable ring on the pen body.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] When the user presses the movable cap with the index finger, the thumb is placed on the thumb fitting area, and the thumb fitting area positions the tip of the thumb so that the tip of the thumb is in a horizontal position and is roughly perpendicular to the pen shaft. The rear fingers (middle finger, ring finger, and little finger) are placed opposite to the thumb fitting area. By setting the thumb fitting area, the user can be guided to control the ink discharge with a specific pen-holding posture, so that the marker pen is not easy to slip out of the hand or slide during the pressing of the movable cap, the index finger is easier to exert force, and the control of the movable cap is more stable and uniform; in addition, when the movable cap is pressed with the index finger, only the second observation window is within the user's line of sight. The user can observe the ink storage volume of the first ink storage chamber through the second observation window, and flexibly adjust the pressing frequency and pressing depth of the movable cap according to the change in the ink storage volume. Therefore, in combination with the thumb fitting area and the second observation window, more precise ink discharge control can be achieved when the movable cap is pressed with the index finger;

[0027] When the user presses the movable cap with the thumb, the rear finger is placed in the rear finger fitting area, and the rear finger fitting area positions the fingertip of the rear finger so that the fingertip of the rear finger is in a horizontal position and is roughly perpendicular to the pen shaft. The index finger is placed above the rear finger. By setting the rear finger fitting area, the user can be guided to control the ink discharge with a specific pen holding posture, so that the marker pen is not easy to fall out of the hand or slide during the pressing of the movable cap, the thumb is easier to exert force, and the control of the movable cap is more stable and uniform; in addition, when the movable cap is pressed with the thumb, only the first observation window is within the user's line of sight. The user can observe the ink storage volume of the first ink storage cavity through the first observation window, and flexibly adjust the pressing frequency and pressing depth of the movable cap according to the change of the ink storage volume. Therefore, in combination with the rear finger fitting area and the first observation window, more precise ink discharge control can be achieved when the movable cap is pressed with the thumb.

[0028] In addition, the first observation window and the second observation window are staggered, and only the corresponding ink output control mode appears within the user's field of vision, which can avoid interference from the other window and allow the user to focus more.

[0029] In summary, the present invention provides users with a variety of ink output control options, and the ink storage level can be observed in various ways, and corresponding pen holding posture guidance can be performed, thereby achieving more precise ink output control. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a rear pressure valve type marker pen provided by the present invention;

[0031] Figures 2 to 4 All of them are schematic diagrams of the internal structure of a rear pressure valve type marker pen provided by the present invention;

[0032] Figures 5 to 7This is a schematic structural diagram of a rear-pressure valve marker pen provided by the present invention, in which a thumb fitting area and a rear-end finger fitting area are located on the pen holder;

[0033] Figures 8 to 9 This is a schematic structural diagram of a rear-pressure valve marker provided by the present invention, in which the thumb fitting area and the rear-end finger fitting area are located on a movable ring;

[0034] Fig.10 A schematic diagram of the internal structure of a rear pressure valve type marker pen provided by the present invention;

[0035] Fig.11 The present invention provides a flow chart of a method for using a rear-pressure valve marker pen. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] In the prior art, by pressing the driving cap, the driving cap drives the blocking piece to move downward, thereby separating the lower part of the blocking piece 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 into the second liquid storage chamber through the through hole. When the amount of ink in the second liquid storage chamber reaches the amount required for writing, the driving cap is stopped from being pressed, so that the blocking piece moves upward under the action of the spring recovery and extension, so that the lower part of the blocking piece is reset and the through hole is re-blocked. At the same time, the driving cap is reset under the action of the blocking piece, and it is difficult for the user to accurately control the ink discharge according to different pressing conditions, resulting in a poor user experience.

[0039] The five fingers of the palm are thumb, index finger, middle finger, ring finger and little finger in order. In the present invention, the middle finger, ring finger and little finger are defined as the rear fingers.

[0040] As an example, Figures 1 to 3As 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:

[0041] Regarding the nib 10 and the nib 20 , the nib 10 is inserted into the nib 20 and is interference-fitted therewith.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The present invention provides a rear pressure valve type marker pen 1, such as Figure 1 to Figure 2 As shown, it includes a pen tip 10, an ink storage chamber partition tube 40, and a movable cap 504; the inner cavity of the pen body 30 includes a first ink storage chamber 380 located at the front end;

[0046] The rear pressure valve type marker pen 1 further comprises a thumb fitting area 60 and a rear finger fitting area 70. The thumb fitting area 60 is used to position the thumb when the user presses the movable cap 504 with the index finger, and the rear finger fitting area 70 is used to position the rear finger when the user presses the movable cap 504 with the thumb.

[0047] The pen body 30 and the ink storage chamber partition tube 40 cooperate to form a first observation window 382 and a second observation window 383; the first observation window 382 and the second observation window 383 are distributed around the circumference of the pen body 30, and the angle formed between them is 90° to 180°; the first observation window 382 is used for allowing the user to observe the ink storage amount of the first ink storage chamber 380 from the outside to the inside when the user presses the movable cap 504 with the thumb; the second observation window 383 is used for allowing the user to observe the ink storage amount of the first ink storage chamber 380 from the outside to the inside when the user presses the movable cap 504 with the index finger.

[0048] Compared with the prior art, the rear-pressure valve marker pen 1 provided by the present invention can more accurately control the ink discharge under different pressing conditions, which significantly improves the user experience. Specifically:

[0049] When the user presses the movable cap 504 with the index finger, the thumb is placed on the thumb fitting area 60, and the thumb fitting area 60 positions the fingertip of the thumb so that the fingertip of the thumb is in a horizontal state and is approximately perpendicular to the pen shaft 30, and the rear fingers (middle finger, ring finger, and little finger) are placed at a position opposite to the thumb fitting area 60. By setting the thumb fitting area 60, the user can be guided to control the ink discharge with a specific pen holding posture, so that the marker pen is not easy to fall out of the hand or slide during the pressing of the movable cap 504, the index finger is easier to exert force, and the control of the movable cap 504 is more stable and uniform; in addition, when the movable cap 504 is pressed with the index finger, only the second observation window 383 is located within the user's field of vision, and the user can observe the ink storage volume of the first ink storage chamber 380 through the second observation window 383, and flexibly adjust the pressing frequency and pressing depth of the movable cap 504 according to the change of the ink storage volume. Therefore, in combination with the thumb fitting area 60 and the second observation window 383, more precise ink discharge control can be achieved when the movable cap 504 is pressed with the index finger;

[0050] When the user presses the movable cap 504 with the thumb, the rear finger is placed on the rear finger fitting area 70, and the rear finger fitting area 70 positions the fingertip of the rear finger so that the fingertip of the rear finger is in a horizontal position and is approximately vertical to the pen holder 30, and the index finger is placed above the rear finger. By setting the rear finger fitting area 70, the user can be guided to control the ink discharge with a specific pen holding posture, so that the marker pen is not easy to fall out of the hand or slide during the pressing of the movable cap 504, the thumb is easier to exert force, and the control of the movable cap 504 is more stable and uniform; in addition, when the movable cap 504 is pressed with the thumb, only the first observation window 382 is located within the user's line of sight, and the user can observe the ink storage volume of the first ink storage chamber 380 through the first observation window 382, ​​and flexibly adjust the pressing frequency and pressing depth of the movable cap 504 according to the change of the ink storage volume. Therefore, in combination with the rear finger fitting area 70 and the first observation window 382, ​​more accurate ink discharge control can be achieved when the movable cap 504 is pressed with the thumb.

[0051] In addition, the first observation window 382 and the second observation window 383 are staggered, and only appear in the user's field of vision when the ink output control mode corresponds to the ink output control mode, thereby avoiding interference from another window and allowing the user to focus more.

[0052] In summary, the rear-pressure valve marker pen provided by the present invention provides users with a variety of ink output control options, and the ink storage amount can be observed in various ways, and the corresponding pen holding posture guidance can be performed, thereby achieving more precise ink output control.

[0053] like Figure 1 As shown, in some embodiments, the angle between the first observation window 382 and the second observation window 383 is 90°, which is convenient for the user to switch the pen holding posture between pressing the movable cap 504 with the thumb and pressing the movable cap 504 with the index finger, while avoiding interference from another window.

[0054] like Figure 1 , Figure 2 as well as Figure 4 As shown, in some embodiments, the main tube 301 includes a first transparent rod body 304, a second transparent rod body 305, the first cylinder body 400 is a transparent cylinder body, the first transparent rod body 304 and the first cylinder body 400 cooperate to form a first observation window 382, ​​and the second transparent rod body 305 and the first cylinder body 400 cooperate to form a second observation window 383. Furthermore, the main tube 301 is integrally formed, and the integral forming can reduce the number of parts assembly steps and is conducive to ensuring that the performance tends to be consistent. It should be noted that in order to better understand the position or shape of the first transparent rod body 304 and the second transparent rod body 305, a mesh pattern is used for identification, and the mesh pattern is only used to indicate the specific position or shape of the first transparent rod body 304 and the second transparent rod body 305, and does not play any other limiting role.

[0055] like Figures 5 to 7 As shown, in some embodiments, the thumb fitting area 60 is a concave area or a surrounding area; the rear finger fitting area 70 is a concave area or a surrounding area. Specifically, the concave area refers to a receiving area formed by inward depression, and the surrounding area refers to a receiving area formed by setting a plurality of protruding objects such as protruding points 306. The concave area or the surrounding area is used to form the fitting area, which is convenient for integrated molding and processing.

[0056] like Figures 5 to 7 As shown, in some embodiments, the thumb fitting area 60 and the rear finger fitting area 70 are both located on the pen holder 30, which is convenient for molding directly on the pen holder 30 without adding additional parts. The rear finger fitting area 70 can accommodate only one of the middle finger, the ring finger, and the little finger, or any combination of the three. When accommodating multiple fingers, it can include multiple small concave areas, for example, corresponding to the middle finger, the ring finger, and the little finger respectively, or it can include one large concave area, which can accommodate the middle finger, the ring finger, and the little finger at the same time.

[0057] like Figure 8 As shown, in some embodiments, the rear pressure valve type marker pen 1 also includes a movable ring 80 detachably mounted on the pen body 30, providing the user with more diverse usage options. When the user only needs to draw or write, the movable ring 80 can be removed first; the thumb fitting area 60 and the rear end finger fitting area 70 are both located on the movable ring 80.

[0058] like Figure 8 As shown, in some embodiments, the movable ring 80 has two thumb fitting areas 60 of unequal size and two rear-end finger fitting areas 70 of unequal size; there is a rear-end finger fitting area 70 between two adjacent thumb fitting areas 60; a) is a front side view, and b) is a rear side view. The movable ring 80 rotates coaxially around the pen shaft 30 and can switch to fitting areas of different sizes to adapt to fingertips of different thicknesses, so that the user can choose a more suitable fitting area to have a tighter fit; the outer cylindrical surface of the pen shaft 30 is formed with a convex column 307 extending along its radial direction; at least one of the first observation window 382 and the second observation window 383 corresponds to the convex column 307; the front end of the movable ring 80 is provided with an alignment groove 880 adapted to the convex column 307. After rotating to the specified position, the movable ring 80 can be limited by the cooperation of the alignment groove 880 and the convex column 307 to prevent it from rotating. In addition, when the user removes the movable ring 80 from the pen body 30, the boss 307 can stop the pen body 30 during its rolling process. That is, in addition to cooperating with the alignment groove 880 and limiting the movable ring 80, the boss 307 also has the function of preventing the pen body 30 from rolling and falling.

[0059] like Figure 8As shown, in some embodiments, the movable ring 80 includes a main ring body 800 and auxiliary ring bodies 801 distributed at both ends of the main ring body 800; the main ring body 800 is a hard ring, and the auxiliary ring body 801 is a rubber ring; the auxiliary ring body 801 is fixed to the end of the main ring body 800. The above structure is adopted to facilitate the disassembly and assembly of the movable ring 80. The auxiliary ring body 801 is a rubber ring with deformation ability. When it needs to be disassembled, the auxiliary ring body 801 is lifted upward, and the main ring body 800 can slide freely. The main ring body 800 is slid out of the pen holder 30, and the disassembly of the movable ring 80 is realized; on the contrary, when it needs to be fixed, the user can adjust the position of the main ring body 800 on the pen holder 30 according to the situation of his fingertips. After adjusting to the specified position, the auxiliary ring body 801 is turned down to make it fit on the pen holder 30, and the fixing of the movable ring 80 on the pen holder 30 is realized.

[0060] like Fig. 9 As shown, in some embodiments, the thumb fitting area 60 and the rear end finger fitting area 70 are both surrounding point areas; only one of the thumb fitting area 60 and the rear end finger fitting area 70 is provided with a magnetic surrounding point assembly 90; the magnetic surrounding point assembly 90 includes a connecting piece 900 and two movable surrounding points 901; the connecting piece 900 and the movable surrounding points 901 attract each other; the length direction of the connecting piece 900 is the same as the axial direction of the pen shaft 30; the connecting piece 900 is embedded in the movable ring 80; the two movable surrounding points 901 are distributed at both ends of the connecting piece 900. In the aforementioned structure, the movable ring 80 rotates coaxially around the pen shaft 30. When the thumb fitting area 60 is needed, the magnetic surrounding point assembly 90 is rotated to be directly above the thumb fitting area 60, and the positions of the two movable surrounding points 901 on the connecting piece 900 are adjusted to adapt to fingertips of different thicknesses. In addition to allowing a tighter fingertip fit, the thumb fitting area 60 and the rear end finger fitting area 70 also share the magnetic surrounding point assembly 90, thereby improving practicality.

[0061] Furthermore, Fig.10 As shown, in some embodiments, the movable surrounding point 901 includes a magnetic block 902 and a spherical rubber head 903 , the spherical rubber head 903 is sleeved and fixed on the magnetic block 902 , and the connecting piece 900 can be a stainless steel sheet and is embedded and fixed on the pen holder 30 .

[0062] like Figure 1 , Figure 5As shown, in some embodiments, the first observation window 382 and the second observation window 383 are of the same height, and the width of the first observation window 382 is greater than the width of the second observation window 383; or the first observation window 382 is provided with a plurality of first scale lines 384 distributed along its height direction, and the second observation window 383 is provided with a plurality of second scale lines 385 distributed along its height direction, and the spacing between two adjacent first scale lines 384 is greater than the spacing between two adjacent second scale lines 385. Generally speaking, the force stability and strength of the thumb are better than those of the index finger, therefore, by making the first observation window 382 wider or the spacing between two adjacent first scale lines 384 larger, the user can intuitively feel that the ink feeding speed when pressed with the thumb is faster than the ink feeding speed when pressed with the index finger, which is more conducive to the user's ink output control.

[0063] The embodiment of the present invention also provides a method for using a back pressure valve type marker pen, such as Fig.11 As shown, the following steps are included:

[0064] S1, according to the current ink feeding control mode, select one of the thumb fitting zone and the rear finger fitting zone as a fitting zone; wherein the current ink feeding control mode is index finger pressing or thumb pressing;

[0065] S2, when the selected fitting area is the thumb fitting area, placing the thumb on the thumb fitting area, with the rear finger placed at a position opposite to the thumb fitting area;

[0066] When the fitting area is the rear finger fitting area, the rear finger is placed on the rear finger fitting area, and the index finger is placed above the rear finger.

[0067] The method provided in this embodiment has the advantages of being able to provide users with a variety of ink output control options and providing corresponding pen holding posture guidance in various modes, and is easy to use and flexible.

[0068] In some embodiments, the rear pressure valve type marker pen 1 includes a pen holder 30 and a movable ring 80. The movable ring 80 includes a main ring body 800 and auxiliary ring bodies 801 distributed at both ends of the main ring body 800. The main ring body 800 is a hard ring, and the auxiliary ring body 801 is a rubber ring. The auxiliary ring body 801 is fixed to the end of the main ring body 800.

[0069] Before step S1, the method further includes:

[0070] S3, lift up the auxiliary ring body 801, put the main ring body 800 on the pen body 30, after the main ring body 800 slides to the specified position, turn down the auxiliary ring body 801 to make it fit on the pen body 30, so as to fix the movable ring 80 on the pen body 30.

[0071] 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rear-pressure valve marker pen, comprising a pen holder, an ink storage chamber separation tube, and a movable cap; the inner cavity of the pen holder comprises a first ink storage chamber located at the front end; characterized in that: The rear pressure valve type marker pen further comprises a thumb fitting area and a rear finger fitting area, wherein the thumb fitting area is used to position the thumb when the user presses the movable cap with the index finger, and the rear finger fitting area is used to position the rear finger when the user presses the movable cap with the thumb; The pen barrel and the ink storage chamber partition tube cooperate to form a first observation window and a second observation window; the first observation window and the second observation window are distributed around the circumference of the pen barrel, and the angle between them is 90° to 180°; the first observation window is used for allowing the user to observe the ink storage amount of the first ink storage chamber from the outside to the inside when the user presses the movable cap with the thumb; the second observation window is used for allowing the user to observe the ink storage amount of the first ink storage chamber from the outside to the inside when the user presses the movable cap with the index finger.

2. The rear-pressure valve type marker pen according to claim 1, characterized in that: The thumb fitting area is a concave area or a surrounding area; the rear end finger fitting area is a concave area or a surrounding area.

3. The rear-pressure valve type marker pen according to claim 2, characterized in that: The thumb fitting area and the rear end finger fitting area are both located on the pen holder.

4. The rear-pressure valve type marker pen according to claim 2, characterized in that: The rear-pressure valve-type marker pen also includes a movable ring that is detachably sleeved on the pen holder; the thumb fitting area and the rear-end finger fitting area are both located on the movable ring.

5. The rear-pressure valve type marker pen according to claim 4, characterized in that: The movable ring is provided with two thumb fitting areas of unequal size and two rear-end finger fitting areas of unequal size; there is a rear-end finger fitting area between two adjacent thumb fitting areas; the movable ring rotates coaxially with the pen shaft; a convex column extending in its radial direction is formed on the outer cylindrical surface of the pen shaft; at least one of the first observation window and the second observation window corresponds to the convex column; and a positioning groove adapted to the convex column is provided at the front end of the movable ring.

6. The rear-pressure valve type marker pen according to claim 4, characterized in that: The movable ring comprises a main ring body and auxiliary ring bodies distributed at both ends of the main ring body; the main ring body is a hard ring, and the auxiliary ring body is a rubber ring; the auxiliary ring body is fixed to the ends of the main ring body.

7. The rear-pressure valve type marker pen according to claim 4, characterized in that: The thumb fitting area and the rear finger fitting area are both point surrounding areas; only one of the thumb fitting area and the rear finger fitting area is provided with a magnetic point surrounding component; The magnetic surrounding point assembly includes a connecting plate and two movable surrounding points; the connecting plate and the movable surrounding points attract each other; the length direction of the connecting plate is the same as the axial direction of the pen shaft; the connecting plate is embedded in the movable ring; the two movable surrounding points are distributed at both ends of the connecting plate.

8. The rear-pressure valve type marker pen according to any one of claims 1 to 7, characterized in that: The first observation window and the second observation window are of equal height, and the width of the first observation window is greater than the width of the second observation window; Or the first observation window is provided with a plurality of first scale lines distributed along its height direction, the second observation window is provided with a plurality of second scale lines distributed along its height direction, and the spacing between two adjacent first scale lines is greater than the spacing between two adjacent second scale lines.

9. A method for using a rear pressure valve type marker pen, using the rear pressure valve type marker pen as claimed in any one of claims 1 to 8, characterized in that: The steps include: S1, according to the current ink feeding control mode, select one of the thumb fitting zone and the rear finger fitting zone as a fitting zone; wherein the current ink feeding control mode is index finger pressing or thumb pressing; S2, when the selected fitting area is the thumb fitting area, placing the thumb on the thumb fitting area, with the rear finger placed at a position opposite to the thumb fitting area; When the fitting area is the rear finger fitting area, the rear finger is placed on the rear finger fitting area, and the index finger is placed above the rear finger.

10. The method for using the rear-pressure valve marker pen according to claim 9, characterized in that: The rear pressure valve type marker pen comprises a pen holder and a movable ring, wherein the movable ring comprises a main ring body and auxiliary ring bodies distributed at both ends of the main ring body; The main ring body is a hard ring, and the auxiliary ring body is a rubber ring; The secondary ring body is fixed to the end of the primary ring body; Before step S1, the method further includes: S3, lift up the auxiliary ring body, put the main ring body on the pen body, after the main ring body slides to the specified position, turn down the auxiliary ring body to make it fit on the pen body, so as to fix the movable ring on the pen body.

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