A retractable pen
By incorporating a protective component into the retractable pen, automatic protection of the pen tip is achieved, solving the problems of ink residue contamination and easy loss of traditional pen caps. This enhances ease of use and protection, ensuring continuous and reliable writing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CIXI JINDUO STATIONERY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-16
AI Technical Summary
Existing retractable pens may leave ink residue on clothing, documents, or items in bags during use, and traditional pen caps are easily lost, affecting ease of use and protection.
A protective component was designed, including a press-limit pen clip, a press-pen tip, a movable pen tube, and a duckbill valve. The pen tip is automatically protected by the automatic retraction of the movable pen tube and the automatic blocking of the duckbill valve, preventing residual ink contamination and dust from entering.
It effectively prevents ink residue from contaminating the pen tip, enhances convenience and protection, ensures smooth and continuous writing, and avoids extra operations. The duckbill valve is equivalent to an integrated hidden pen cap.
Smart Images
Figure CN224360893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescopic pen technology, specifically a telescopic pen. Background Technology
[0002] As writing instruments have evolved, consumers have increasingly higher demands for them. When purchasing writing instruments such as ballpoint pens, the writing function itself is no longer the main focus. Instead, factors such as appearance, feel, design, and stress relief functions have a greater influence on consumers' purchasing choices.
[0003] According to a public notice of a retractable pen (publication number: CN221623418U), the above application includes a pen refill, a pen barrel, a pen tip, a silicone sleeve, and a pen tail. The pen tip is mounted on the front end of the pen barrel, the silicone sleeve is fitted onto the pen barrel, the pen tail is located at the end of the silicone sleeve, the pen refill is installed in the pen barrel, and the inner side of the pen tail is provided with a connector for abutting against the end of the pen refill.
[0004] However, in actual use, residual ink on the pen tip of the aforementioned retractable pen may come into contact with clothing, documents, and items in a bag without protection, causing contamination. This is especially true for oil-based or water-based pen refills, where even if the pen tip appears to be retracted into the pen body, a small amount of ink may still remain around the ball or tip. In view of this, we have proposed a retractable pen. Utility Model Content
[0005] The purpose of this invention is to provide a retractable pen to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a retractable pen, comprising a lower section of the pen body, the end face of which is threadedly connected to an upper section of the pen body, and a protective component is disposed inside the upper section of the pen body, the protective component comprising:
[0007] The press-limit pen clip has a pressing block fixedly connected to its side wall;
[0008] The pen tip is pressed, and the end face of the pen tip is threadedly connected to the lower end of the pen tip. A locking block is fixedly connected to the outer wall of the lower end of the pen tip.
[0009] A movable pen tube has a slider fixedly connected to its outer wall, a movable pen tip is sleeved on the outer wall of the slider, a groove is formed on the outer wall of the movable pen tip, and a duckbill valve is fixedly connected to the inner wall of the movable pen tip.
[0010] Preferably, a return spring is sleeved on the outer wall of the movable pen tip, and a limit block is fixedly connected to the end face of the movable pen tip, the limit block restricting the rotation angle of the movable pen tip and the movable pen tube.
[0011] Preferably, one end of the reset spring abuts against the slider, and the end of the reset spring away from the slider abuts against the inner wall of the lower section of the pen body. The reset spring is used to push the movable pen tube to reset.
[0012] Preferably, the pressing and limiting pen clip is inserted into the outer wall of the upper part of the pen body, and the outer wall of the upper part of the pen body has a slot, which is movably connected to the pressing block.
[0013] Preferably, the pressing pen tip is sleeved with the upper part of the pen body, the locking block is engaged with the locking groove, and a pen tip decorative piece is fixedly connected to the outer wall of the pressing pen tip. When the locking groove and the locking block are engaged, the end face of the movable pen tube is located outside the lower part of the pen body, and at this time, the telescopic pen can be used for writing.
[0014] Preferably, the movable pen tube is threadedly connected to the lower end of the pen tip, the slider is slidably connected to the slide groove, the duckbill valve is movably connected to the movable pen tube, and the movable pen tip is fixedly connected to the lower section of the pen body.
[0015] Preferably, a slide rail is provided on the outer wall of the upper part of the pen body, a shielding ring is sleeved on the outer wall of the upper part of the pen body, and a protruding strip is fixedly connected to the inner wall of the shielding ring, and the protruding strip is slidably connected to the slide rail.
[0016] Compared with the prior art, this utility model provides a telescopic pen with the following beneficial effects:
[0017] 1. This retractable pen features a protective component. After the movable pen tube retracts into the lower part of the pen body, the duckbill valve deforms and resets, blocking the pen tip. This prevents air from entering and causing the ink to dry, and avoids residual ink from contacting clothing, documents, or items in the bag, thus preventing contamination. It also prevents dust and debris from entering and contaminating the pen tip, and prevents ink or grease from leaking due to temperature differences or gravity, thus improving the pen tip's protective performance. Compared to traditional pen caps that are easily lost and require manual application, the duckbill valve is essentially an integrated, concealed pen cap that automatically closes as the pen retracts, requiring no additional operation and improving convenience and protection.
[0018] 2. This retractable pen features a blocking ring positioned between the slot and the pressing block. This prevents accidental pressing of the pen clip, effectively shielding the pressing area of the pen clip. Even if the user accidentally touches the limiting structure while writing, the pen cannot be retracted, ensuring continuous writing and improving writing smoothness and reliability. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0020] Figure 2 This is an exploded view of the lower section of the pen body of this utility model;
[0021] Figure 3This is an exploded view of the upper part of the pen body of this utility model;
[0022] Figure 4 This is an exploded view of the upper part of the pen body in Embodiment 2 of this utility model.
[0023] In the diagram: 1. Lower section of pen body; 2. Upper section of pen body; 3. Protective component; 301. Press-to-limit pen clip; 302. Pressing block; 303. Pressing pen tip; 304. Lower end of pen tip; 305. Locking block; 306. Locking groove; 307. Movable pen tube; 308. Slider; 309. Movable pen tip; 310. Slide groove; 311. Duckbill valve; 4. Return spring; 5. Limiting block; 6. Slide rail; 7. Covering ring; 8. Raised strip; 9. Pen tip decorative part. Detailed Implementation
[0024] Example 1
[0025] like Figures 1-3 As shown, this utility model provides a technical solution: a telescopic pen, including a lower section 1 of the pen body, with a threaded connection at the end face of the lower section 1 to a upper section 2 of the pen body, and a protective component 3 disposed inside the upper section 2 of the pen body. The protective component 3 includes a pressing limit pen clip 301, a pressing block 302, a pressing pen tip 303, a lower end of the pen tip 304, a locking block 305, a locking groove 306, a movable pen tube 307, a slider 308, a movable pen tip 309, a sliding groove 310, and a duckbill valve 311.
[0026] In one embodiment of this utility model, a pressing and limiting pen clip 301 is fixedly connected to the side wall of a pressing and limiting pen clip 302. The pressing and limiting pen clip 301 is inserted into the outer wall of the upper section 2 of the pen body. A slot 306 is provided on the outer wall of the upper section 2 of the pen body, and the slot 306 is movably connected to the pressing and limiting block 302.
[0027] The end face of the press-on pen tip 303 is threadedly connected to the lower end of the pen tip 304. The outer wall of the lower end of the pen tip 304 is fixedly connected to the locking block 305. The press-on pen tip 303 is sleeved with the upper part 2 of the pen body. The locking block 305 is engaged with the locking groove 306. The outer wall of the press-on pen tip 303 is fixedly connected to the pen tip decorative part 9. When the locking groove 306 and the locking block 305 are engaged, the end face of the movable pen tube 307 is located outside the lower part 1 of the pen body. At this time, the retractable pen can be used for writing.
[0028] A slider 308 is fixedly connected to the outer wall of the movable pen tube 307. A movable pen tip 309 is sleeved on the outer wall of the slider 308. A groove 310 is opened on the outer wall of the movable pen tip 309. A duckbill valve 311 is fixedly connected to the inner wall of the movable pen tip 309. The movable pen tube 307 is threadedly connected to the lower end 304 of the pen tip. The slider 308 is slidably connected to the groove 310. The duckbill valve 311 is movably connected to the movable pen tube 307. The duckbill valve 311 is made of rubber. The movable pen tip 309 is fixedly connected to the lower section 1 of the pen body.
[0029] Press down on the pen tip 303, causing the pen tip 303 to press down on the lower end 304 of the pen tip and the movable pen tube 307 to move downwards, so that the locking block 305 engages with the locking slot 306. At this time, the end face of the movable pen tube 307 is located outside the lower section 1 of the pen body, and the retractable pen can be used for writing. After stopping writing, press down on the limiting pen clip 301, causing the lower pressing block 302 to move downwards. The lower pressing block 302 pushes the locking block 305, causing the lower end 304 of the pen tip to deform, thereby causing the locking block 305 to disengage from the locking slot 306. At this time, the movable pen tube 307 can retract into the lower section 1 of the pen body to protect the pen tip.
[0030] When the movable pen tube 307 moves outward to the lower section 1 of the pen body, the movable pen tube 307 pushes open the duckbill valve 311, allowing the movable pen tube 307 to extend out of the lower section 1 of the pen body. When the movable pen tube 307 retracts inward to the lower section 1 of the pen body, the movable pen tube 307 moves towards the lower end 304 of the pen tip towards the duckbill valve 311. After the movable pen tube 307 is retracted into the lower section 1 of the pen body, the duckbill valve 311 deforms and resets, blocking the pen tip to prevent air from entering and causing the ink to dry. This prevents residual ink from the pen tip from contacting clothing, documents, items in the bag, etc., causing contamination. At the same time, it prevents dust and debris from entering and contaminating the pen tip, and prevents ink or grease from leaking due to temperature difference or gravity, thus improving the pen tip protection performance. Compared with traditional pen caps that are easy to lose and need to be manually put on, the duckbill valve 311 is equivalent to an integrated hidden pen cap that automatically closes as the pen refill retracts, requiring no additional operation and improving convenience and protection.
[0031] In addition, a return spring 4 is sleeved on the outer wall of the movable pen tip 309. A limit block 5 is fixedly connected to the end face of the movable pen tip 309. The limit block 5 restricts the rotation angle of the movable pen tip 309 and the movable pen tube 307. One end of the return spring 4 abuts against the slider 308, and the end of the return spring 4 away from the slider 308 abuts against the inner wall of the lower section 1 of the pen body. The return spring 4 is used to push the movable pen tube 307 to reset. After the pen is used up, the return spring 4 can automatically push the movable pen tube 307 and the movable pen tip 309 back into the lower section 1 of the pen body after pressing the latch 305. The user does not need to push them back manually to avoid the pen tip being exposed.
[0032] In this invention, during use, pressing down on the pen tip 303 causes the pen tip 303 to press down on the lower end 304 of the pen tip and the movable pen tube 307, causing the locking block 305 to engage with the locking groove 306. The movable pen tube 307 opens the duckbill valve 311. At this time, the end face of the movable pen tube 307 is located outside the lower section 1 of the pen body, allowing for writing with the telescopic pen. After stopping writing, pressing down on the limiting pen clip 301 causes the lower pressing block 302 to move downwards. When the pen tip is moved, the pressing block 302 pushes the locking block 305, causing the lower end 304 of the pen tip to deform. This causes the locking block 305 to disengage from the locking slot 306. At the same time, the movable pen tube 307 can retract into the lower section 1 of the pen body. The movable pen tube 307 moves towards the duckbill valve 311 and closer to the lower end 304 of the pen tip. The duckbill valve 311 deforms and resets, blocking the pen tip to prevent air from entering and causing the ink to dry. This also prevents residual ink from the pen tip from contacting clothing, documents, items in the bag, etc., causing contamination.
[0033] Example 2
[0034] like Figure 4 As shown, the present invention improves upon Embodiment 1 to obtain a new technical solution:
[0035] The outer wall of the upper part 2 of the pen body is provided with a slide rail 6, and a blocking ring 7 is sleeved on the outer wall of the upper part 2 of the pen body. A protruding strip 8 is fixedly connected to the inner wall of the blocking ring 7. The protruding strip 8 is slidably connected to the slide rail 6. When writing, the blocking ring 7 is slid down so that the blocking ring 7 is located between the slot 306 and the pressing block 302. At this time, the limit pen clip 301 will not be accidentally pressed, which is equivalent to physically shielding the pressing area of the limit pen clip. When the user writes, even if the finger accidentally touches the limit structure, it will not trigger the pen closing action, ensuring continuous writing and improving writing smoothness and reliability.
[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A telescopic pen comprising a lower pen body section (1), the end face of which is threadedly connected to an upper pen body section (2), characterized in that: The inside of the pen body upper segment (2) is provided with a protection assembly (3), which comprises: The side wall of the pressing limiting pen clamp (301) is fixedly connected with a pressing block (302); The end surface of the pressing pen head (303) is threadedly connected with a pen head lower end (304), and the outer wall of the pen head lower end (304) is fixedly connected with a clamping block (305); The outer wall of the movable pen tube (307) is fixedly connected with a sliding block (308), the outer wall of the sliding block (308) is sleeved with a movable pen tip (309), the outer wall of the movable pen tip (309) is provided with a sliding groove (310), and the inner wall of the movable pen tip (309) is fixedly connected with a duckbill valve (311).
2. A retractable pen according to claim 1, wherein: The outer wall of the movable pen tip (309) is sleeved with a reset spring (4), and the end surface of the movable pen tip (309) is fixedly connected with a limiting block (5).
3. A retractable pen according to claim 2, wherein: One end of the reset spring (4) abuts against the sliding block (308), and the other end of the reset spring (4) away from the sliding block (308) abuts against the inner wall of the pen body lower segment (1).
4. A retractable pen according to claim 1, wherein: The pressing limiting pen clamp (301) is inserted into the outer wall of the pen body upper segment (2), the outer wall of the pen body upper segment (2) is provided with a clamping groove (306), and the clamping groove (306) is movably connected with the pressing block (302).
5. A retractable pen according to claim 4, wherein: The pressing pen head (303) is sleeved with the pen body upper segment (2), the clamping block (305) is clamped with the clamping groove (306), and the outer wall of the pressing pen head (303) is fixedly connected with a pen head decoration (9).
6. A retractable pen according to claim 1, wherein: The movable pen tube (307) is threadedly connected with the pen head lower end (304), the sliding block (308) is slidably connected with the sliding groove (310), the duckbill valve (311) is movably connected with the movable pen tube (307), and the movable pen tip (309) is fixedly connected with the pen body lower segment (1).
7. A retractable pen according to claim 1, wherein: The outer wall of the pen body upper segment (2) is provided with a sliding rail (6), the outer wall of the pen body upper segment (2) is sleeved with a shielding ring (7), the inner wall of the shielding ring (7) is fixedly connected with a convex strip (8), and the convex strip (8) is slidably connected with the sliding rail (6).