Pen point for pen refill capable of absorbing ink

Abstract

The pen point comprises a connecting portion detachably connected with a pen body and a movable portion rotationally connected to the lower portion of the connecting portion, the pen refill is arranged in the pen point in a penetrating mode and comprises an ink bag and a pen point, the ink bag and the pen point are communicated with each other, and the ink bag is arranged in the movable portion. The movable part is provided with an extrusion assembly, and the movable part rotates relative to the connecting part to drive the extrusion assembly to extrude the ink bag, so that ink is sucked and supplemented. The extrusion assembly comprises a circular plate, a sliding frame and a plurality of sets of evenly-distributed pressing blocks, an arc-shaped guide groove is formed in the circular plate, the sliding frame is provided with a guide plate, and the pressing blocks are in sliding connection with the guide plate through sliding seats. The movable part is elastically and rotationally connected with the connecting part through the coil spring, the elastic restoring force of the coil spring drives the movable part to reset, and the ink bag is automatically loosened. According to the utility model, through simplifying the ink absorption operation, the ink is prevented from overflowing, the damage to the ink bag is reduced, the use experience of high efficiency, cleanness and easy operation is provided, and the market application prospect is relatively high.

Description

Technical Field

[0001] This utility model relates to the field of stationery, specifically to a pen tip for ink-absorbing pen refills. Background Technology

[0002] Fillable ink refills are commonly used in writing instruments such as fountain pens. Their main function is to replenish ink into the refill by drawing ink from it, thus ensuring the pen's normal operation. When the ink in the refill is low, the user needs to add it. Traditional fillable ink refills use a simple ink-drawing mechanism. Usually, before use, the user needs to detach the pen tip from the pen body, remove the refill, and then dip the refill into the ink, drawing ink by pressing or pulling.

[0003] While this traditional ink-filling method is simple and easy to understand, it also has several inconveniences. First, each time ink is refilled, the user needs to disassemble the pen tip and remove the refill, a cumbersome and inefficient process, especially when used frequently or requiring quick refills, resulting in a poor user experience. Second, during ink filling, the user's hand is in direct contact with the refill, and the refill is prone to ink splattering due to improper operation (such as pressing or pulling too quickly), staining the desktop, hands, or clothing, causing inconvenience to the user.

[0004] Therefore, there is an urgent need to design a pen tip for ink-filling refills to meet users' needs. Utility Model Content

[0005] The purpose of this invention is to provide a pen tip for ink-filling pen refills, which simplifies the ink-filling operation, reduces inconvenience for users, effectively prevents ink spillage, and improves the user experience.

[0006] The technical solution adopted by this utility model to solve the above problems is: a pen tip for an ink-absorbing pen refill, including a connecting part that is detachably connected to the pen body and a movable part that is rotatably connected to the lower part of the connecting part. The pen refill is inserted into the pen tip, which includes an ink sac and a pen tip that are interconnected. The ink sac is disposed in the movable part, and the movable part is provided with a squeezing component. The movable part rotates relative to the connecting part to drive the squeezing component to squeeze the ink sac.

[0007] Preferably, the extrusion assembly includes a circular plate, a slide, and several sets of circumferentially evenly arranged pressure blocks. The circular plate is disposed on the connecting part and has several sets of arc-shaped guide grooves extending from the inside to the outside. The slide is disposed on the movable part and has guide plates circumferentially arranged in the same number as the pressure blocks. The pressure blocks include slide seats that are slidably connected and adapted to the guide plates. The slide seats are provided with guide columns that are slidably adapted to the guide grooves. The slide rotates relative to the circular plate, causing the slide seats to move inward along the guide plates.

[0008] Preferably, the slide block has a groove adapted to slide and connect with the guide plate, the guide plate has an elongated hole, and the guide post is inserted through the groove and adapted to slide and connect with the elongated hole.

[0009] Preferably, the pressure block further includes a pressure plate that is detachably connected to the slide. A rectangular groove is provided below the slide, and a mounting seat that matches the rectangular groove is provided above the pressure plate. The mounting seat is connected and fixed to the slide by threaded fasteners.

[0010] Preferably, the mounting base includes a base plate adapted to the rectangular groove and a slider adapted to slide through the elongated hole of the guide plate.

[0011] Preferably, the movable part has several notches circumferentially provided, and the notches are slidably adapted to the base plate of the slide and the mounting base.

[0012] Preferably, the movable part is elastically rotatably connected to the connecting part via a coil spring, and the elastic restoring force of the coil spring drives the movable part to rotate, causing the extrusion assembly to release the ink sac.

[0013] Preferably, a threaded structure is provided above the movable part.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention utilizes a rotary-driven squeezing component, allowing users to automatically squeeze the ink cartridge by rotating a movable part on the pen tip, thus completing ink filling and refilling without disassembling the pen tip or refill. This simplifies the traditional ink filling process and improves efficiency. The curved pressure plate's fit with the ink cartridge ensures even pressure application, reducing damage and extending the cartridge's lifespan. Furthermore, after ink filling, the spring's elastic restoring force automatically resets the movable part, releasing the ink cartridge and ensuring it returns to its normal state for the next filling, preventing deformation or damage from prolonged pressure. Additionally, the detachable design allows for easy replacement of the pressure plate, further enhancing usability and adaptability. This invention effectively prevents ink spillage and contamination of the user's hands and desktop, providing a more convenient, efficient, and clean user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pen tip structure according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the pen tip in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the extrusion assembly according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the connection structure between the slide and the pressure block in an embodiment of this utility model.

[0020] Figure numbers: Pen tip 1, Connecting part 11, Moving part 12, Pen refill 13, Ink sac 14, Pen tip 15, Extrusion assembly 16, Threaded structure 21, Round plate 22, Slide 23, Pressure block 24, Guide groove 25, Guide plate 26, Slide seat 27, Guide post 28, Slide groove 31, Elongated hole 32, Pressure plate 33, Rectangular groove 34, Mounting seat 35, Threaded fastener 36, Coil spring 41, Base plate 42, Slider 43, Notch 44. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0022] Example: See Figure 1 - Figure 4 In this embodiment, a pen tip 1 for an ink-absorbing pen refill 13 is disclosed, specifically used for absorbing and replenishing ink in writing instruments such as fountain pens. The pen tip 1 includes a connecting part 11 detachably connected to the pen body and a movable part 12 rotatably connected below the connecting part 11. The pen refill 13 is inserted into the pen tip 1 and includes an ink sac 14 and a pen tip 15 that are interconnected. The ink sac 14 is disposed within the movable part 12, which is provided with a squeezing component 16. The movable part 12 rotates relative to the connecting part 11 to drive the squeezing component 16 to squeeze the ink sac 14.

[0023] Specifically, in this embodiment, the pen tip 1 needs to be connected and fixed to the pen body during use. Specifically, the movable part 12 is provided with a threaded structure 21 adapted to the threaded connection of the pen body (the pen tip 1 has an external thread, and the pen body has an internal thread). The threaded structure 21 connects and fixes the pen tip 1 to the pen body, allowing the ink cartridge 13 to be placed inside the pen tip 1. When the ink sac 14 of the ink cartridge 13 is low on ink, the user rotates the movable part 12 of the pen tip 1, causing it to rotate relative to the connecting part 11. The squeezing component 16 inside the movable part 12 rotates accordingly, squeezing the ink sac 14 and venting air. Under the elastic recovery of the ink sac 14, ink is pushed through the pen tip 15 to replenish the ink. This invention, by rotating the movable part 12 to press the internal ink sac 14, allows the user to replenish ink without removing the pen tip 1, significantly improving efficiency and effectively avoiding ink spillage or contamination of hands and desktops during traditional ink filling processes.

[0024] The extrusion assembly 16 includes a circular plate 22, a slide 23, and several sets of circumferentially evenly arranged pressure blocks 24. The circular plate 22 is disposed on the connecting part 11 and has several sets of arc-shaped guide grooves 25 extending from the inside to the outside. The slide 23 is disposed on the movable part 12 and has guide plates 26 arranged circumferentially in the same number as the pressure blocks 24. Each pressure block 24 includes a slide seat 27 that is slidably connected and adapted to the guide plate 26. The slide seat 27 is provided with guide posts 28 that are slidably adapted to the guide grooves 25. The slide 23 rotates relative to the circular plate 22, causing the slide seat 27 to move inward along the guide plates 26. Specifically, when the movable part 12 rotates forward relative to the connecting part 11, the slide 23 rotates relative to the circular plate 22, causing the surrounding pressure blocks 24 to move inward along the guide grooves 25 and the guide plates 26. At this time, the pressure blocks 24 apply pressure to the ink sac 14 in the movable part 12, squeezing the ink sac 14 and expelling the gas therein, so that the ink sac 14 is compressed and ready to absorb ink. When the movable part 12 is rotated in the opposite direction, the pressure block 24 releases the ink sac 14, and the ink sac 14 returns to its original state, thereby realizing the ink absorption operation.

[0025] The slide block 27 has a groove 31 that is slidably connected to and adapted to the guide plate 26. The guide plate 26 has an elongated hole 32. The guide post 28 is disposed through the groove 31 and slidably connected to and adapted to the elongated hole 32. Specifically, the groove 31 on the slide block 27 is slidably engaged with the guide plate 26, so that the slide block 27 is fitted onto the outside of the guide plate 26, allowing the slide block 27 to slide along the length of the guide plate 26.

[0026] The pressure block 24 also includes a pressure plate 33 that is detachably connected to the slide 27. The pressure plate 33 and the slide 27 are connected by a detachable structure, which facilitates the replacement of the pressure plate 33. Specifically, a rectangular groove 34 is provided below the slide 27, and a mounting seat 35 that matches the rectangular groove 34 is provided above the pressure plate 33. The mounting seat 35 is connected and fixed to the slide 27 by threaded fasteners 36 (screws, bolts).

[0027] In this embodiment, the inner side of the pressure plate 33 adopts an arc-shaped structure, which allows it to fit more closely with the ink sac 14 during compression, dispersing pressure and reducing damage to the ink sac 14. Furthermore, to further improve the smoothness of the ink absorption operation, the movable part 12 in this embodiment is elastically rotatably connected to the connecting part 11 via a coil spring 41. After the movable part 12 stops rotating, the elastic restoring force of the coil spring 41 drives it to automatically return to its original position, thereby releasing the ink sac 14 from the compression assembly 16 and preventing the ink sac 14 from being compressed for an extended period. Specifically, one end of the coil spring 41 is connected to the circular plate 22, and the other end is connected to the slide 23. Thus, after the slide 23 rotates forward relative to the circular plate 22, the pressure plate 33 applies pressure to the ink sac 14 through the slide 23, thereby compressing the ink sac 14 and preparing it for ink absorption. When the movable part 12 is released, the elastic restoring force of the coil spring 41 drives the slide 23 to rotate back to its original position. At this time, the pressure plate 33 releases the ink sac 14 under the action of the coil spring 41, and the ink sac 14 returns to its original state after absorbing ink. In this embodiment, the coil spring 41 resets the pressure component 16 to automatically detach from the ink sac 14 (i.e., the pressure block 24 is released), so that the ink sac 14 can immediately resume absorbing ink, avoiding damage or deformation of the ink sac 14 due to prolonged pressure from the pressure block 24.

[0028] The mounting base 35 includes a base plate 42 adapted to the rectangular groove 34 and a slider 43 slidably connected to the elongated hole 32 of the guide plate 26. Specifically, the base plate 42 adopts a rectangular structure adapted to the rectangular groove 34, and the slider 43 is inserted into the groove 31 of the slide block 27, making the connection between the mounting base 35 and the slide block 27 tighter and reducing the shaking of the pressure plate 33. The slider 43 is adapted to the elongated hole 32 to avoid interference between the mounting base 35 and the guide plate 26 and ensure the sliding between the guide plate 26 and the groove 31. The movable part 12 has several notches 44 circumferentially opened, and the notches 44 are slidably adapted to the slide block 27 and the base plate 42 of the mounting base 35. When the movable part 12 rotates forward relative to the connecting part 11, the mounting base 35 and the slide block 27 extend outward along the guide plate 26 simultaneously. In this embodiment, by opening notches 44 in the movable part 12 in the same number as the mounting base 35 and the slide block 27, it is ensured that the pressure block 24 can be properly unfolded.

[0029] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A pen tip for an ink-absorbing pen refill, characterized in that, It includes a connecting part that is detachably connected to the pen body and a movable part that is rotatably connected to the lower part of the connecting part. The pen refill is inserted into the pen tip, which includes an ink sac and a pen tip that are in communication with each other. The ink sac is located in the movable part, which is provided with a squeezing component. The movable part rotates relative to the connecting part to drive the squeezing component to squeeze the ink sac.

2. The pen tip for an ink-absorbing pen refill according to claim 1, characterized in that: The extrusion assembly includes a circular plate, a slide, and several sets of circumferentially evenly arranged pressure blocks. The circular plate is disposed on the connecting part and has several sets of arc-shaped guide grooves extending from the inside to the outside. The slide is disposed on the movable part and has guide plates arranged circumferentially in the same number as the pressure blocks. Each pressure block includes a slide seat that is slidably connected and adapted to the guide plate. The slide seat is provided with guide posts that are slidably adapted to the guide grooves. The slide rotates relative to the circular plate, causing the slide seat to move inward along the guide plate.

3. A pen tip for an ink-absorbing pen refill according to claim 2, characterized in that: The slide block has a groove that is adapted to slide and connect with the guide plate. The guide plate has an elongated hole. The guide post is inserted through the groove and is adapted to slide and connect with the elongated hole.

4. A pen tip for an ink-absorbing pen refill according to claim 3, characterized in that: The pressure block also includes a pressure plate that is detachably connected to the slide. A rectangular groove is provided below the slide, and a mounting seat that matches the rectangular groove is provided above the pressure plate. The mounting seat is connected and fixed to the slide by threaded fasteners.

5. A pen tip for an ink-absorbing pen refill according to claim 4, characterized in that: The mounting base includes a base plate adapted to the rectangular groove and a slider adapted to slide through the elongated hole of the guide plate.

6. A pen tip for an ink-absorbing pen refill according to claim 5, characterized in that: The movable part has several notches circumferentially provided, and the notches are slidably adapted to the base plate of the slide and the mounting base.

7. A pen tip for an ink-absorbing pen refill according to claim 1, characterized in that: The movable part is elastically rotatably connected to the connecting part via a coil spring. The elastic restoring force of the coil spring drives the movable part to rotate, causing the extrusion assembly to release the ink sac.

8. A pen tip for an ink-absorbing pen refill according to claim 1, characterized in that: A threaded structure is provided above the movable part.

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