Writing tool with anti-lost pen cap

Abstract

A writing tool with an anti-lost pen cap comprises a pen holder and the pen cap, connecting rods are arranged on the two sides of the pen cap, track grooves are formed in the two connecting rods, rotating shafts are arranged on the two sides of the pen holder, the pen cap can axially slide relative to the pen holder through the rotating shafts and the track grooves, and the pen cap turns over when the pen cap rotates in the circumferential direction and does not interfere with a pen point. According to the writing tool with the anti-lost pen cap, when the pen cap is turned over, the pen point is not prone to being damaged, and ink mark pollution is not prone to being generated.

Description

Technical Field

[0001] The utility model relates to the technical field of office stationery, and particularly relates to a writing tool with an anti-lost pen cap. Background Art

[0002] When people use writing tools such as highlighters, gel pens, and ballpoint pens, the pen caps are often lost. Without the protection of the pen caps, not only is the tip of the pen easily damaged, but also it is easy to cause poor ink flow or no ink flow, resulting in the waste of the entire pen.

[0003] In view of the above technical problems, there has currently emerged a writing tool with an anti-lost pen cap. For example, a two-in-one pen with an anti-lost pen cap disclosed in the Chinese utility model patent with the authorization announcement number CN203246215U has a structure as Figure 1 shown, including a pen barrel 1a, a refill 2a, and a pen cap 3a. Connecting rods 4a are provided on both sides of the pen cap 3a, slideways 5a are provided on both sides of the pen barrel 1a, a sliding rotating shaft 6a is provided in the slideway 5a, the sliding rotating shaft 6a can rotate and slide in the slideway 5a, one end of the connecting rod 4a is connected to the sliding rotating shaft 6a in the slideway 5a, and the other end is fixed at the pen cap 3a. When using this writing tool with an anti-lost pen cap, the pen cap 3a at one end of the pen barrel 1a is pulled out, so that the pen cap 3a drives the connecting rod 4a and the sliding rotating shaft 6a to move forward in the slideway 5a, and then the connecting rod 4a rotates around the sliding rotating shaft 6a to flip the pen cap 3a to the other end of the pen barrel 1a. During the entire use process, the pen cap 3a is not separated from the pen barrel 1a, and the loss of the pen cap 3a can be prevented.

[0004] However, the existing writing tools with anti-lost pen caps still have the following technical problems: The sliding rotating shaft 6a is set to be able to slide and rotate in the slideway 5a. Although the function of flipping the pen cap 3a can be realized, when the pen cap 3a has not completely left the tip of the refill 2a, that is, when the circumferential rotation of the pen cap 3a interferes with the tip of the pen, the tip of the pen may be damaged due to the flipping of the pen cap 3a, or ink marks may be generated due to the tip of the pen scratching the pen cap 3a. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: to provide a writing tool with an anti-lost pen cap that is not easily damaged at the tip of the pen and does not easily generate ink mark pollution when the pen cap is flipped.

[0006] The technical solution of the utility model is: a writing tool with an anti-lost pen cap, including a pen barrel and a pen cap. Connecting rods are provided on both sides of the pen cap, and track grooves are provided on the two connecting rods. Rotating shafts are provided on both sides of the pen barrel. The pen cap can axially slide relative to the pen barrel through the rotating shafts and the track grooves, and can be flipped when the circumferential rotation does not interfere with the tip of the pen.

[0007] The working principle of the writing tool with an anti-lost pen cap of the utility model is as follows:

[0008] When writing, pull the pen cap out of the pen tip of the pen barrel. At the beginning, the pen cap can only move axially relative to the pen barrel; only when the pen cap moves to the point of circumferential rotation without interfering with the pen tip, the pen cap can be flipped over; the flipped pen cap is located at the end of the pen barrel, and then the pen cap is pressed into the end of the pen barrel to fix and store the pen cap; after writing, pull the pen cap out of the end of the pen barrel, and then the pen cap can be flipped over again, and the pen cap will return to the pen tip of the pen barrel; put the pen cap back into the pen tip of the pen barrel, and the pen cap can protect the pen tip again; during the entire use process, the pen cap is always connected to the pen barrel and is not easy to lose.

[0009] After adopting the above structure, the utility model has the following advantages:

[0010] The writing tool with the anti-lost pen cap of the utility model divides the movement of the pen cap into an axial sliding section and a circumferential rotation section, so that when the circumferential rotation of the pen cap interferes with the pen tip, the pen cap can only make an axial movement but cannot make a flipping movement, thereby effectively preventing the pen tip from being damaged due to the flipping of the pen cap or ink contamination caused by the pen tip scratching the pen cap.

[0011] Preferably, the track groove includes a sliding track groove and a rotating track groove arranged at one end of the sliding track groove. When the pen cap is pulled out from the pen tip of the pen body, the rotating shaft slides axially relative to the sliding track groove. When the pen cap rotates circumferentially without interfering with the pen tip, the rotating shaft enters the rotating track groove. When the pen cap is flipped to the end of the pen body, the rotating shaft rotates circumferentially relative to the rotating track groove. This arrangement divides the track groove into an axial sliding section and a circumferential rotating section along the movement direction, so as to ensure that the pen cap can only slide axially when the pen tip is first pulled out, and can only be flipped when the pen cap rotates circumferentially without interfering with the pen tip. The overall structure is relatively simple, and the movement switching is relatively reliable.

[0012] Preferably, the pen cap further comprises a tooth guide structure disposed in the sliding track groove, the rotating shaft comprises a toothed shaft disposed in the tooth guide structure, and the toothed shaft can stop at any position in the sliding track groove when axially sliding relative to the tooth guide structure. This arrangement can provide a better feel when the pen cap is axially slid, and can make the pen cap stop at any desired position, not only can the pen cap be reliably sheathed at the pen head of the pen holder to protect the pen tip, but also can make the pen cap reliably stored at the pen tail of the pen holder without shaking.

[0013] Preferably, the gear guide structure extends from the sliding track groove to the rotating track groove, and the toothed shaft can stop at any angle in the rotating track groove when rotating circumferentially relative to the gear guide structure. This arrangement can provide a better feel when flipping the pen cap, and can make the pen cap stop at any desired angle, and can also ensure that the shaft will not leave the rotating track groove when flipping the pen cap, making the flipping more reliable.

[0014] Preferably, the sliding track groove is a strip-shaped groove, the rotating track groove is a circular groove, and the circular groove communicates with one end of the strip-shaped groove. This setting makes the shape of the track groove relatively simple and is easy to form the axial sliding section and the circumferential rotating section of the track groove.

[0015] Preferably, the diameter of the circular groove is greater than the width of the strip-shaped groove. The rotating shaft further includes a switching portion provided on the toothed shaft. The length of the switching portion is greater than the diameter of the toothed shaft. When the toothed shaft rotates circumferentially relative to the tooth-pulling guiding structure, the switching portion rotates circumferentially relative to the circular groove. The double-rotation matching structure can make the rotation of the rotating shaft in the rotating track groove more stable and reliable.

[0016] Preferably, the length of the switching portion matches the diameter of the circular groove. This setting can make the cooperation between the switching portion and the circular groove closer during rotation, and the rotation is more stable and reliable.

[0017] Preferably, the width of the switching portion is greater than the diameter of the toothed shaft, so that the switching portion is limited outside the tooth-pulling guiding structure. This setting can use the switching portion as a limiting structure to ensure that the toothed shaft can be reliably limited in the tooth-pulling guiding structure and will not fall off.

[0018] Preferably, it further includes a lining provided in the pen cap. One end of the lining is fixed on the pen cap and the other end has an increased diameter to form an open end. When the pen cap is sleeved on the pen tip of the pen barrel, the pen tip is inserted into the lining through the open end. This setting can further protect the pen tip by using the lining, and setting an open end at the front end of the lining is beneficial to guiding the insertion of the pen tip.

[0019] Preferably, an inner lining mounting seat is further provided in the pen cap. A first annular protrusion is provided on the inner side of the inner lining mounting seat, and a second annular protrusion is provided on the outer side of the lining. When the lining is installed in place with the inner lining mounting seat, the second annular protrusion is snapped into the first annular protrusion. This setting facilitates the fixed installation of the lining and also facilitates the processing of the lining as an independent component, which is beneficial to modular production and assembly.

[0020] Preferably, it further includes a rear seal embedded at the pen tail of the pen barrel. One end of the rear seal abuts against the pen core and the other end is provided with a limiting structure that cooperates with the pen cap. This setting enables the rear seal to achieve functional reuse, that is, it can both seal the pen barrel to fix the pen core and fix the flipped pen cap. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an existing writing tool with an anti-lost pen cap;

[0022] Figure 2 It is a schematic structural diagram of the writing tool with an anti-lost pen cap of the present invention when the pen cap is sleeved on the pen tip;

[0023] Figure 3 Axial sectional view of the writing tool with an anti-lost pen cap of the present utility model with the pen cap sleeved on the pen tip;

[0024] Figure 4 Schematic structural view of the writing tool with an anti-lost pen cap of the present utility model with the pen cap flipped to the pen tail;

[0025] Figure 5 Axial sectional view of the writing tool with an anti-lost pen cap of the present utility model with the pen cap flipped to the pen tail;

[0026] Figure 6 Explosion schematic view of the writing tool with an anti-lost pen cap of the present utility model;

[0027] Figure 7 Assembly schematic view of the pen cap and the pen barrel of the writing tool with an anti-lost pen cap of the present utility model;

[0028] Figure 8 Schematic structural view of the pen cap of the writing tool with an anti-lost pen cap of the present utility model;

[0029] Figure 9 Schematic structural view of the pen barrel of the writing tool with an anti-lost pen cap of the present utility model;

[0030] In the prior art figure: 1a - pen barrel, 2a - pen core, 3a - pen cap, 4a - connecting rod, 5a - slideway, 6a - slideway rotating shaft;

[0031] In the figure of the present utility model: 1 - pen barrel, 2 - pen core, 3 - pen cap, 4 - connecting rod, 5 - track groove, 6 - sliding rotating shaft, 7 - sliding track groove, 8 - rotating track groove, 9 - pen tip, 10 - tooth guiding structure, 11 - toothed shaft, 12 - switching part, 13 - inner liner, 14 - opening, 15 - inner liner mounting seat, 16 - first annular protrusion, 17 - second annular protrusion, 18 - rear seal, 19 - limiting structure, 20 - first friction pattern, 21 - second friction pattern, 22 - pen core mounting seat, D1 - diameter of the circular groove, L1 - length of the switching part, W1 - width of the strip-shaped groove, W2 - width of the switching part. Detailed implementation manners

[0032] The following will further illustrate the present utility model in conjunction with the attached drawings and embodiments.

[0033] Embodiment:

[0034] As Figure 2-9As shown in the figure, a writing tool with an anti-lost pen cap includes a pen barrel 1, a refill 2 disposed within the pen barrel 1, and a pen cap 3 disposed on the pen tip of the pen barrel 1. One end of the refill 2 is provided with a nib 9. In this embodiment, the refill 2 is a highlighter refill 2. Connecting rods 4 are provided on both sides of the pen cap 3, and a track groove 5 is provided on the two connecting rods 4. Rotating shafts 6 are provided on both sides of the pen barrel 1. The pen cap 3 can axially slide relative to the pen barrel 1 through the rotating shafts 6 and the track groove 5, and can flip when rotating circumferentially without interfering with the nib 9.

[0035] Since the movement of the pen cap of the writing tool with an anti-lost pen cap of the present utility model is divided into an axial sliding section and a circumferential rotation section, when the pen cap rotates circumferentially and interferes with the nib, it can only perform axial movement and cannot perform a flipping action, thereby effectively preventing damage to the nib caused by the flipping of the pen cap or ink mark pollution caused by the nib scratching the pen cap.

[0036] The track groove 5 includes a sliding track groove 7 and a rotating track groove 8 provided at one end of the sliding track groove 7. When the pen cap 3 is pulled out from the pen tip of the pen barrel 1, the rotating shaft 6 axially slides relative to the sliding track groove 7. When the pen cap 3 rotates circumferentially without interfering with the nib 9, the rotating shaft 6 enters the rotating track groove 8. When the pen cap 3 is flipped to the pen tail of the pen barrel 1, the rotating shaft 6 rotates circumferentially relative to the rotating track groove 8. This setting divides the track groove 5 into an axial sliding section and a circumferential rotation section along the movement direction to ensure that the pen cap 3 can only perform axial sliding at the beginning of pulling out the pen tip and can only flip when the pen cap rotates circumferentially without interfering with the nib 9. The overall structure is relatively simple and the movement switching is relatively reliable.

[0037] It further includes a tooth guiding structure 10 disposed within the sliding track groove 7. The rotating shaft 6 includes a toothed shaft 11 disposed within the tooth guiding structure 10. When the toothed shaft 11 axially slides relative to the tooth guiding structure 10, it can stop at any position within the sliding track groove 7. This setting can provide a better feel when axially sliding the pen cap 3 and can make the pen cap 3 stop at any desired position. It can not only enable the pen cap 3 to reliably cover the pen tip of the pen barrel 1 to protect the nib 9 of the refill 2, but also enable the pen cap 3 to be reliably stored at the pen tail of the pen barrel 1 without shaking.

[0038] The tooth guide structure 10 extends from the sliding track groove 7 to the rotating track groove 8. The toothed shaft 11 can stop at any angle in the rotating track groove 8 when rotating circumferentially relative to the tooth guide structure 10. The tooth guide structure 10 includes two upper and lower rows of linear toothed structures arranged along the axial direction, and a section of arc-shaped toothed structures located in the rotating track groove 8. In fact, the tooth guide structure 10 extends axially from the sliding track groove 7 to the rotation center of the rotating track groove 8. The toothed shaft 11 can also slide axially relative to the tooth guide structure 10 and can stop at any position in this section of the track groove. Only when the toothed shaft 11 slides axially to the rotation center of the rotating track groove 8 can it rotate circumferentially, and at this time, it can stop at any angle in the rotating track groove 8. This setting can make the pen cap 3 feel better when rotating circumferentially, and can make the pen cap 3 stop at any desired angle. It can also ensure that the shaft 6 will not be separated from the rotating track groove 8 when the pen cap 3 is flipped, and the flipping is more reliable.

[0039] The sliding track groove 7 is a strip groove, and the rotating track groove 8 is a circular groove, which is connected to one end of the strip groove. This arrangement makes the shape of the track groove 5 simpler and makes it easy to form the axial sliding section and the circumferential rotating section of the track groove 5.

[0040] The diameter D1 of the circular groove is greater than the groove width W1 of the strip groove. The rotating shaft 6 further includes a switching portion 12 disposed on the toothed shaft 11. The length L1 of the switching portion 12 is greater than the diameter of the toothed shaft 11. When the toothed shaft 11 rotates circumferentially relative to the shifting gear guide structure 10, the switching portion 12 rotates circumferentially relative to the circular groove. The double rotation matching structure can make the rotation of the rotating shaft 6 in the rotation track groove 8 more stable and reliable.

[0041] The length L1 of the switching part 12 matches the diameter D1 of the circular groove. This arrangement can make the switching part 12 fit more closely with the circular groove during rotation, and the rotation is more stable and reliable.

[0042] The width W2 of the switching portion 12 is greater than the diameter of the toothed shaft 11, so that the switching portion 12 is limited outside the gear guide structure 10. This arrangement can use the switching portion 12 as a limiting structure 19 to ensure that the toothed shaft 11 can be reliably limited in the gear guide structure 10 and will not fall off.

[0043] The two ends of the switching portion 12 are arranged in an arc shape, which can make the cooperation between the switching portion 12 and the circular groove smoother.

[0044] The strip groove and the circular groove are both arranged on the connecting rod 4, the rotating shaft 6 is T-shaped, one end of the toothed shaft 11 is fixed on the pen body 1, and the other end passes through the gear guide structure 10 of the connecting rod 4 and is connected to the switching part 12 limited outside the gear guide structure 10.

[0045] It further includes a lining 13 disposed inside the pen cap 3. One end of the lining 13 is fixed to the pen cap 3 and the other end has an increased diameter to form an opening 14. When the pen cap 3 is sleeved on the tip of the pen barrel 1, the pen tip 9 is inserted into the lining 13 through the opening 14. This setting can further protect the pen tip 9 of the refill 2 by means of the lining 13, and the provision of the opening 14 at the front end of the lining 13 is conducive to guiding the insertion of the pen tip 9.

[0046] A lining mounting seat 15 is also provided inside the pen cap 3. A first annular protrusion 16 is provided on the inner side of the lining mounting seat 15, and a second annular protrusion 17 is provided on the outer side of the lining 13. When the lining 13 and the lining mounting seat 15 are installed in place, the second annular protrusion 17 snaps into the first annular protrusion 16. This setting facilitates the fixed installation of the lining 13 and also facilitates the processing of the lining 13 as an independent component, which is conducive to modular production and assembly.

[0047] It further includes a rear seal 18 embedded at the pen tail of the pen barrel 1. One end of the rear seal 18 abuts against the refill 2 and the other end is provided with a limiting structure 19 that cooperates with the pen cap 3. When the pen cap 3 is flipped to the pen tail, pressing the pen cap 3 onto the limiting structure 19 of the rear seal 18 can fix the pen cap 3 and the rear seal 18 together; in this embodiment, a refill mounting seat 22 is also provided inside the pen barrel 1. The corresponding end of the rear seal 18 is inserted into the refill mounting seat 22 and abuts against the refill 2 installed in the refill mounting seat 22. In this embodiment, the rear seal 18 is also fixed to the refill mounting seat 22 through a snap structure, and the snap structure can adopt the existing technology. This setting enables the rear seal 18 to achieve functional reuse, that is, it can both close the pen barrel 1 to fix the refill 2 and fix the flipped pen cap 3.

[0048] First friction lines 20 are provided on the upper and lower surfaces of the pen cap 3, and second friction lines 21 are provided on the upper and lower surfaces of the pen barrel 1. The provision of the friction lines can prevent hand slippage and make the operation of the pen cap 3 and writing more convenient.

[0049] The working principle of the writing tool with an anti-lost pen cap in this embodiment is as follows:

[0050] When writing, the pen cap 3 is pulled out from the pen tip of the pen barrel 1. The pen cap 3 drives the track groove 5 on the connecting rod 4 to axially slide, while the rotating shaft 6 on the pen barrel 1 remains stationary. In this way, the toothed shaft 11 of the rotating shaft 6 axially slides relative to the tooth-shaped guiding structure 10 of the strip-shaped groove, and the switching part 12 is limited outside the tooth-shaped guiding structure 10 and also axially slides relative to the strip-shaped groove. At this time, the pen cap 3 can only axially move relative to the pen barrel 1. When the pen cap 3 moves to a position where circumferential rotation does not interfere with the pen tip 9, the toothed shaft 11 of the rotating shaft 6 enters the tooth-shaped guiding structure 10 of the circular groove. When the toothed shaft 11 axially slides to the center of rotation of the circular groove, the pen cap 3 can be flipped at this time. The toothed shaft 11 rotates circumferentially relative to the tooth-shaped guiding structure 10 and the switching part 12 rotates circumferentially relative to the circular groove. The flipped pen cap 3 is located at the pen tail of the pen barrel 1. After pressing the pen cap 3 onto the limiting structure 19 of the rear seal 18, the pen cap 3 can be fixed at the pen tail without shaking. After writing, the pen cap 3 is pulled out from the pen tail of the pen barrel 1, and the rotating shaft 6 enters the rotating track groove 8 again, and the pen cap 3 can be flipped again, and the pen cap 3 will return to the pen tip of the pen barrel 1 again. When the pen cap 3 is reinserted into the pen tip of the pen barrel 1, the pen tip 9 of the refill 2 will be inserted into the inner lining 13 of the pen cap 3 through the open end 14, and the pen cap 3 can protect the pen tip 9 of the refill 2 again. During the whole using process, the pen cap 3 is always connected to the pen barrel 1 and is not easy to be lost.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A writing tool with an anti-lost pen cap, comprising a pen holder (1) and a pen cap (3), wherein connecting rods (4) are provided on both sides of the pen cap (3), characterized in that: Track grooves (5) are arranged on the two connecting rods (4), and rotating shafts (6) are arranged on both sides of the pen shaft (1). The pen cap (3) can slide axially relative to the pen shaft (1) through the rotating shaft (6) and the track grooves (5), and can be turned over when the circumferential rotation does not interfere with the pen tip (9).

2. A writing tool with an anti-lost pen cap according to claim 1, characterized in that: The track groove (5) comprises a sliding track groove (7) and a rotating track groove (8) arranged at one end of the sliding track groove (7); when the pen cap (3) is pulled out from the pen tip of the pen body (1), the rotating shaft (6) slides axially relative to the sliding track groove (7); when the pen cap (3) rotates circumferentially without interfering with the pen tip (9), the rotating shaft (6) enters the rotating track groove (8); when the pen cap (3) is turned over to the end of the pen body (1), the rotating shaft (6) rotates circumferentially relative to the rotating track groove (8).

3. A writing tool with an anti-lost pen cap according to claim 2, characterized in that: It also includes a shifting gear guide structure (10) arranged in the sliding track groove (7), and the rotating shaft (6) includes a toothed shaft (11) arranged in the shifting gear guide structure (10), and the toothed shaft (11) can stop at any position in the sliding track groove (7) when axially sliding relative to the shifting gear guide structure (10).

4. A writing tool with an anti-lost pen cap according to claim 3, characterized in that: The shifting gear guide structure (10) extends from the sliding track groove (7) to the rotating track groove (8), and the toothed shaft (11) can stop at any angle in the rotating track groove (8) when rotating circumferentially relative to the shifting gear guide structure (10).

5. A writing tool with an anti-lost pen cap according to claim 4, characterized in that: The sliding track groove (7) is a strip groove, and the rotating track groove (8) is a circular groove, and the circular groove is connected to one end of the strip groove.

6. A writing tool with an anti-lost pen cap according to claim 5, characterized in that: The diameter (D1) of the circular groove is greater than the groove width (W1) of the strip groove. The rotating shaft (6) further comprises a switching portion (12) arranged on the toothed shaft (11). The length (L1) of the switching portion (12) is greater than the diameter of the toothed shaft (11). When the toothed shaft (11) rotates circumferentially relative to the gear guide structure (10), the switching portion (12) rotates circumferentially relative to the circular groove.

7. A writing tool with an anti-lost pen cap according to claim 6, characterized in that: The width (W2) of the switching portion (12) is greater than the diameter of the toothed shaft (11), so that the switching portion (12) is limited outside the shifting tooth guide structure (10).

8. A writing tool with an anti-lost pen cap according to claim 1, characterized in that: The invention also comprises an inner lining (13) arranged in the pen cap (3), one end of the inner lining (13) being fixed on the pen cap (3) and the other end having a larger diameter to form an opening (14), and when the pen cap (3) is put on the pen tip of the pen body (1), the pen tip (9) is inserted into the inner lining (13) through the opening (14).

9. A writing tool with an anti-lost pen cap according to claim 8, characterized in that: The pen cap (3) is further provided with a liner mounting seat (15), the inner side of the liner mounting seat (15) is provided with a first annular protrusion (16), the outer side of the liner (13) is provided with a second annular protrusion (17), and when the liner (13) and the liner mounting seat (15) are installed in place, the second annular protrusion (17) is inserted into the first annular protrusion (16).

10. A writing tool with an anti-lost pen cap according to claim 1, characterized in that: It also comprises a rear seal (18) embedded at the end of the pen body (1), one end of the rear seal (18) abuts against the pen core (2) and the other end is provided with a limiting structure (19) matched with the pen cap (3).

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