Pen capable of preventing ink from being air-dried

Abstract

The utility model discloses a pen capable of preventing ink from being dried, the pen comprises a pen shell, a telescopic refill and an elastic sealing cover, a pen cap drives the refill to stretch out and draw back through a telescopic locking mechanism, and meanwhile, the sealing cover elastically resets when the refill retracts, so that effective sealing is formed, and the ink is prevented from being dried up. The telescopic locking mechanism comprises a tooth holder, a tooth column, a first reset spring and a guide groove, and the refill is driven to stretch out and draw back through sliding and rotating effects. The refill is filled with erasable ink, the end of the pen cap is used for erasing the ink, and a locking component is arranged to prevent the pen cap from retracting when the pen cap is inverted. By means of the design, the service life and stability of the pen are improved, better writing experience is provided, and the pen is particularly suitable for ink erasable pens.

Description

TECHNICAL FIELD

[0001] The utility model relates to writing tool technical field, concretely relates to a prevent ink air dry's pen. BACKGROUND

[0002] As a commonly used writing tool, the pen has smooth writing and clear handwriting, and is widely used in learning, office and other occasions. However, the traditional pen is prone to ink air drying during use, especially when not used for a long time, the ink drying around the pen tip will cause writing difficulty or even block the pen core, affecting the service life of the pen and user experience.

[0003] In addition, with the popularity of erasable ink, erasable ink is widely used in learning and office scenarios due to its erasable and modifiable characteristics. However, due to the active chemical properties, erasable ink is prone to volatilization when exposed to air for a long time, resulting in a decline in writing quality and affecting user experience. Compared with the structural design of the traditional pen, higher requirements are placed on the sealing of erasable ink.

[0004] Therefore, it is urgent to design a pen that prevents ink from air drying to meet the actual needs of users and improve the writing experience of writing tools. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a pen that prevents ink from air drying by improving the structural design of the pen shell to effectively seal the ink and solve the problem of ink air drying in the prior art.

[0006] The technical scheme adopted by the utility model to solve the above problems is: a pen that prevents ink from air drying, comprising a pen shell, a retractable pen core arranged in the pen shell, a pen cap elastically and slidingly connected to one end of the pen shell, and a sealing cover elastically hinged in the pen shell and opening outward.

[0007] Preferably, the retractable locking mechanism comprises a tooth seat, a tooth column and a first return spring, the tooth seat and the tooth column are not completely meshed, one end of the pen core is arranged on the tooth seat, a guide groove is formed on the outer periphery of the tooth seat, a guide strip is arranged in the pen shell and slidingly matched with the guide groove, the tooth column is rotationally arranged in the pen shell and the pen cap is arranged at one end of the tooth column, one end of the first return spring is fixed in the pen shell and the other end is in contact with the pen cap.

[0008] Preferably, the pen core comprises an ink tube and a pen tip, the ink tube is filled with erasable ink, and the pen cap is provided with a tip for wiping the erasable ink.

[0009] Preferably, the end of the pen shell is provided with a locking component for limiting the retraction of the cap into the pen shell when the pen shell is inverted, the locking component comprising a lock shell, a limiting seat provided at the upper end of the lock shell, a lock hole provided in the limiting seat, a lock core provided in the lock hole, a tooth column provided with an annular lock groove matched with the lock core, and a lock sleeve provided on the limiting seat and provided with an expansion opening in the direction of the inclined tooth column.

[0010] Preferably, the pen shell comprises a sealing head and a pen barrel screwed with each other, the ink cartridge is slidingly arranged in the sealing head, and the telescopic locking mechanism further comprises a second reset spring arranged in the sealing head and used for driving the ink cartridge to retract.

[0011] Preferably, the sealing head is provided with a flexible holding sleeve, and the outer surface of the holding sleeve is provided with a thumb groove, an index finger groove and a middle finger limiting groove.

[0012] Preferably, the ink tube is in contact with the tooth seat, and the inclined surface of the pen point faces the opening side of the sealing cover.

[0013] Preferably, one end of the sealing cover is elastically hinged in the pen shell through a torsional spring.

[0014] Preferably, the lock shell is provided with a convex seat, and the convex seat is provided with a decorative ball.

[0015] Compared with the prior art, the utility model has the following advantages and effects:

[0016] The utility model discloses a pen with a sealing cover and a telescopic locking mechanism, which effectively solves the problem of ink drying for a long time. The elastic reset and locking mechanism of the sealing cover can automatically form a seal when the ink cartridge is not used, preventing air from entering and thus avoiding ink drying or evaporation. The pen is particularly suitable for use with erasable ink, effectively improving its sealing performance and ensuring good writing performance of the ink for a long time. In addition, the writing experience of the user is enhanced when using the pen, the cap provides a function of wiping ink, and the unique locking component ensures the stability of the ink cartridge during inverted use, avoiding the possibility of ink cartridge retraction and further improving the durability and comfort of the pen. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of a pen for preventing ink from drying of an embodiment of the utility model.

[0018] Figure 2 It is a structure explosion schematic diagram of a pen for preventing ink from drying of an embodiment of the utility model.

[0019] Figure 3 It is a structure schematic diagram of a sealing cover of an embodiment of the utility model.

[0020] Figure 4 is a structure schematic view of the locking component of the embodiment of the utility model.

[0021] Figure 5 is a working principle schematic view of the locking component when writing (forward direction) of the embodiment of the utility model.

[0022] Figure 6 is a working principle schematic view of the locking component when wiping (reverse direction) of the embodiment of the utility model.

[0023] Figure 7 is a sliding connection structure schematic view of the tooth seat and the pen barrel of the embodiment of the utility model.

[0024] Figure 8 is a structure schematic view of the flexible holding sleeve of the embodiment of the utility model.

[0025] Drawing number: pen shell 11, pen core 12, pen cap 13, telescopic locking mechanism 14, sealing cover 15, tooth seat 21, tooth column 22, first reset spring 23, guide groove 24, guide strip 25, ink pipe 26, pen point 27, end 28, locking component 31, lock shell 32, limiting seat 33, lock hole 34, lock core 35, annular lock groove 36, lock sleeve 37, flared portion 38, sealing head 41, pen barrel 42, second reset spring 43, flexible holding sleeve 44, thumb recess 45, index finger recess 46, middle finger limiting groove 47, torsional spring 51, convex seat 52, decorative ball 53. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail below by combining with the drawings and through the embodiment, and the following embodiment is the explanation of the utility model and the utility model is not limited to the following embodiment.

[0027] Embodiment: refer to Figure 1 - Figure 3 In the embodiment, a pen for preventing ink from drying is related, which is particularly suitable for the protection requirement of the pen filled with erasable ink and is used to solve the problem of ink drying when the pen is not used for a long time. The pen comprises a pen shell 11, the pen shell 11 is provided with a telescopic pen core 12, one end of the pen shell 11 is elastically connected with a pen cap 13, the pen cap 13 drives the pen core 12 to extend or retract from the core outlet of the pen shell 11 through a telescopic locking mechanism 14, and the pen shell 11 is elastically hinged with an outward opening sealing cover 15.

[0028] Specifically, in the embodiment, the user drives the retractable locking mechanism 14 to drive the refill 12 by pressing the cap 13 during use, the refill 12 pushes the sealing cover 15 to open outward, and the refill 12 is extended from the core outlet to realize writing after being locked. The user retracts the refill 12 by pressing the cap 13 to drive the retractable locking mechanism 14 after use, and the sealing cover 15 is elastically reset after the refill 12 is retracted, so that the refill 12 is sealed in the pen barrel 11, thereby preventing external air from entering the area where the refill 12 is located, and avoiding direct contact between flowing air and the refill 12. Effectively solve the problem of ink drying for a long time, prolong the service life of the pen, and improve the reliable writing ability of the product.

[0029] The retractable locking mechanism 14 in the embodiment includes a tooth seat 21, a tooth column 22, and a first reset spring 23. The tooth seat 21 is not completely engaged with the tooth column 22. One end of the refill 12 is arranged on the tooth seat 21, and a guide groove 24 is formed on the outer periphery of the tooth seat 21. Referring to Figure 7 , a guide strip 25 is arranged in the pen barrel 11 and is slidably matched with the guide groove 24. The tooth column 22 is rotationally arranged in the pen barrel 11, and the cap 13 is arranged at one end of the tooth column 22. One end of the first reset spring 23 is fixed in the pen barrel 11, and the other end is in contact with the cap 13. When the user presses the cap 13, the tooth column 22 rotates and drives the tooth seat 21 to slide along the direction of the guide groove 24. The teeth of the tooth seat 21 will slide along the inclined surface of the teeth of the tooth column 22 that are engaged. In this way, under the action of the inclined surface, the tooth seat 21 will rotate by an angle and slide to the other side. The cap 13 is pressed to make the refill 12 extend from the core outlet of the pen barrel 11 to complete the writing function. After the pressing action is completed, the first reset spring 23 provides a rebound force to make the cap 13 and the tooth column 22 return to the initial position. Thus, the retractable function of the refill 12 of the pen can be realized.

[0030] The refill 12 includes an ink tube 26 and a pen tip 27. The ink tube 26 is filled with erasable ink. The erasable ink has the characteristic of being cleaned by wiping after writing, thereby providing the user with flexible writing and modification functions. The cap 13 is provided with an end head 28 for wiping the erasable ink. The end head 28 is made of wear-resistant rubber or high polymer material, which can effectively clean the erasable ink on the writing surface without damaging the paper surface. At the same time, the heat generated by the friction between the end head 28 and the paper surface can further accelerate the erasing of the erasable ink (heat-sensitive erasable ink).

[0031] In order to solve the problem of avoiding the cap 13 from retracting into the pen barrel 11 when the end head 28 is used to wipe in the inverted pen barrel 11, a locking component 31 is specially arranged at the end of the pen barrel 11. Referring to Figure 4The locking component 31 comprises a lock shell 32, the upper end of the lock shell 32 is provided with a limiting seat 33, the limiting seat 33 is provided with a lock hole 34, the lock hole 34 is provided with a lock core 35, the tooth column 22 is provided with an annular lock groove 36 matched with the lock core 35, the limiting seat 33 is slidably sleeved with a lock sleeve 37, the lock sleeve 37 is provided with an expanding portion 38 matched with the direction of the tooth column 22. Specifically, in the use process, when the user needs to remove the writing traces, the pen shell 11 can be inverted and the wiping operation can be performed by using the end head 28 of the pen cap 13. Referring to Figure 6 At this time, the lock sleeve 37 slides down under the action of gravity, the inner wall of the lock sleeve 37 pushes the lock core 35, so that the lock core 35 falls into the annular lock groove 36 of the tooth column 22, at this time, the tooth column 22 is locked, and the pen cap 13 cannot be pressed. Referring to Figure 5 In the forward use, the lock sleeve 37 is reset, at this time, the lock hole 34 of the limiting seat 33 is located in the expanding portion 38 of the lock sleeve 37, the lock core 35 can be separated from the annular lock groove 36, so that the pressing function of the pen cap 13 and the extension function of the pen core 12 are restored.

[0032] The pen shell 11 comprises a sealing head 41 and a pen barrel 42 which are screwed with each other, the pen core 12 is slidably arranged in the sealing head 41, and the extension locking mechanism 14 further comprises a second reset spring 43 arranged in the sealing head 41 and used for driving the pen core 12 to retract. In the embodiment, the tooth seat 21 is in contact with the pen core 12, and a separated design is adopted between the tooth seat 21 and the pen core 12, so that the pen core 12 cannot be driven to retreat by the first reset spring 23, at this time, the pen core 12 can be driven to retract by the second reset spring 43.

[0033] Referring to Figure 8 The sealing head 41 is sleeved with a flexible holding sleeve 44, the flexible holding sleeve 44 is made of silica gel, elastic plastic or other high polymer materials, which has a soft touch and can provide a certain friction to prevent sliding. On the outer surface of the holding sleeve, a thumb groove 45, an index finger groove 46 and a middle finger limiting groove 47 are arranged according to ergonomics. In the writing process, the user can place the thumb in the thumb groove 45, the index finger in the index finger groove 46, and the knuckles of the middle finger against the limiting groove, so that the three fingers cooperate to enable the pen to maintain the best writing angle, effectively improving the holding stability of the pen.

[0034] The ink pipe 26 is in contact with the tooth seat 21, and the inclined surface of the pen point 27 faces the opening side of the sealing cover 15. So that the sealing cover 15 can be well matched with the pen point 27 during opening and closing. The inclined surface structure of the pen point 27 can reduce the friction resistance between the sealing cover 15 and the pen point 27, and avoid that the sealing cover 15 is damaged due to friction after long-term use, thereby reducing the sealing performance after closing. In the embodiment, one end of the sealing cover 15 is elastically hinged in the pen shell 11 through a torsional spring 51, and the torsional spring 51 drives the sealing cover 15 to close through the elastic force.

[0035] The lock shell 32 is externally provided with a boss 52 which protrudes from the pen shell 11 and can prevent the pen from rolling and breaking on the desktop, and the boss 52 is internally provided with a decorative ball 53, and in addition, the decorative ball 53 can be engraved with user-defined numbers and texts to improve the quality and recognition of the pen.

[0036] The above in the specification is only an example of the utility model. The skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace with similar ways, as long as not deviating from the content of the utility model specification or beyond the scope defined by the claims, should belong to the protection scope of the utility model.

Claims

1. A fountain pen for preventing ink from drying out, comprising a pen casing, a retractable refill disposed within the pen casing, a pen cap elastically slidably connected to one end of the pen casing, the pen cap driving the refill to extend or retract from the refill outlet of the pen casing via a telescopic locking mechanism, characterized in that, The pen shell is elastically hinged with a sealing cover which opens outward.

2. A pen for preventing ink from drying out according to claim 1, characterized in that: The telescopic locking mechanism comprises a tooth base, a tooth column and a first reset spring. The tooth base is not fully meshed with the tooth column. One end of the pen core is arranged on the tooth base. A guide groove is arranged on the outer periphery of the tooth base. A guide strip is arranged in the pen shell and is slidably matched with the guide groove. The tooth column is rotationally arranged in the pen shell. The cap is arranged on one end of the tooth column. One end of the first reset spring is fixed in the pen shell. The other end of the first reset spring is in contact with the cap.

3. A pen for preventing ink from drying out according to claim 1, wherein: The pen core comprises an ink tube and a pen nib. The ink tube is filled with erasable ink. The cap is provided with a tip for wiping the erasable ink.

4. A pen for preventing air drying of ink as defined in claim 3, wherein: The end of the pen shell is provided with a locking component for limiting the retraction of the cap into the pen shell when the pen shell is inverted and the tip is wiped. The locking component comprises a lock shell. A limiting seat is arranged on the upper end of the lock shell. A lock hole is arranged in the limiting seat. A lock core is arranged in the lock hole. The tooth column is provided with an annular lock groove which is matched with the lock core. A lock sleeve is slidably arranged on the limiting seat. The lock sleeve is provided with an expansion which is obliquely arranged to the direction of the tooth column.

5. A pen for preventing ink from drying out according to claim 1, wherein: The pen shell comprises a sealing head and a pen barrel which are screwed with each other. The pen core is slidably arranged in the sealing head. The telescopic locking mechanism further comprises a second reset spring which is arranged in the sealing head and is used for driving the retraction of the pen core.

6. A pen for preventing air drying of ink as defined in claim 5, wherein: A flexible holding sleeve is arranged on the sealing head. A thumb groove, an index finger groove and a middle finger limiting groove are arranged on the outer surface of the holding sleeve.

7. A pen for preventing air drying of ink as defined in claim 3, wherein: The ink tube is in contact with the tooth base. The inclined surface of the pen nib faces the opening side of the sealing cover.

8. A pen for preventing ink from drying out according to claim 1, wherein: One end of the sealing cover is elastically hinged in the pen shell by a torsion spring.

9. A pen for preventing air drying of ink as defined in claim 4, wherein: A convex seat is arranged on the outside of the lock shell. A decorative ball is arranged in the convex seat.

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