Pen tip assembly and stylus

Abstract

The application discloses a pen tip assembly and a handwriting pen. The pen tip assembly comprises a pen core sleeve, a mounting sleeve fixedly arranged at one end of the pen core sleeve, a pen core rod arranged in the pen core sleeve, a pressure sensor arranged in the mounting sleeve and abutting against the pen core rod, and a first sealing ring arranged between the pen core rod and the pen core sleeve. The first sealing ring can prevent liquid from entering the mounting sleeve from the gap between the pen core sleeve and the pen core rod, and the problem that the handwriting pen does not have a waterproof function is solved.

Description

Technical Field

[0001] This invention relates to the field of smart writing pens, and particularly to a pen tip component and a stylus. Background Technology

[0002] Currently available smart styluses on the market are structurally designed to achieve basic writing functions, prioritizing lower latency and higher accuracy. They don't place much emphasis on waterproofing and dustproofing. However, unexpected accidents are inevitable in daily life, such as spills of tea or coffee. If liquid comes into contact with the stylus tip, it can seep into the pen, potentially causing short circuits or corrosion of the internal electronic hardware, thus affecting the normal use of the stylus and reducing the user experience. Summary of the Invention

[0003] The main objective of this invention is to provide a pen tip assembly and a stylus, which aims to solve the problem that existing styluses do not have waterproof functionality.

[0004] To achieve the above objectives, the present invention provides a pen tip assembly, comprising:

[0005] Pen refill sleeve;

[0006] The mounting sleeve is fixedly installed at the end of the pen refill sleeve away from the pen tip;

[0007] A pen refill rod is disposed in the pen refill sleeve, and the pen refill rod is provided with a limiting structure that restricts its own movement toward the pen tip;

[0008] The first sealing ring is disposed at the limiting structure;

[0009] A pressure sensor is disposed in the mounting sleeve and abuts against the end of the pen refill barrel away from the pen tip.

[0010] In one embodiment, the limiting structure includes a first step disposed on the pen refill rod, the inner wall of the pen refill sleeve is provided with a second step corresponding to the first step, and the first sealing ring is disposed between the first step and the second step.

[0011] In one embodiment, the pen refill sleeve and the mounting sleeve are inserted together. The outer wall of the pen refill sleeve is provided with a snap-fit ​​protrusion located at the end of the pen refill sleeve away from the pen tip. The mounting sleeve is provided with a buckle that matches the snap-fit ​​protrusion.

[0012] In one embodiment, a second sealing ring is provided between the outer wall of the pen refill sleeve and the inner wall of the mounting sleeve.

[0013] In one embodiment, the outer periphery of the pen refill sleeve is further provided with a first annular groove, the first annular groove being located on the side of the snap-fit ​​protrusion near the pen tip, and the inner wall of the mounting sleeve is further provided with a second annular groove corresponding to the first annular groove, and the second sealing ring being located between the first annular groove and the second annular groove.

[0014] In one embodiment, the bottom of the mounting sleeve is further provided with a wire hole through which the signal wire of the pressure sensor passes.

[0015] In one embodiment, waterproof adhesive is also provided at the wire hole.

[0016] In one embodiment, the snap-fit ​​protrusion forms a guide ramp on the sidewall away from the pen tip.

[0017] In one embodiment, the end of the pen refill remote from the mounting sleeve is provided with a mounting hole, and the pen tip assembly further includes a pen tip portion disposed in the mounting hole, the pen tip portion extending from the end of the pen refill sleeve remote from the mounting sleeve.

[0018] The present invention also proposes a stylus, including the above-described pen tip assembly.

[0019] This invention provides a pen tip assembly, which includes a pen refill sleeve, a mounting sleeve fixedly disposed at one end of the pen refill sleeve, a pen refill rod disposed in the pen refill sleeve, a pressure sensor disposed in the mounting sleeve and abutting against the pen refill rod, and a first sealing ring disposed between the pen refill rod and the pen refill sleeve. By setting the first sealing ring, liquid can be prevented from entering the mounting sleeve from the gap between the pen refill sleeve and the pen refill rod, thus solving the problem that the stylus does not have a waterproof function. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the pen tip assembly in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional view of the pen tip assembly in the embodiment.

[0023] Explanation of icon numbers:

[0024]

[0025]

[0026] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators, such as up, down, left, right, front, back, etc., then the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] This invention proposes a pen tip assembly, referring to... Figure 1 and Figure 2 The pen tip assembly includes:

[0031] Pen refill sleeve 10;

[0032] The mounting sleeve 20 is fixedly installed at the end of the pen refill sleeve 10 away from the pen tip;

[0033] The pen refill rod 30 is disposed in the pen refill sleeve 10, and the pen refill rod 30 is provided with a limiting structure that restricts its own movement toward the pen tip;

[0034] The first sealing ring 51 is disposed at the limiting structure;

[0035] A pressure sensor 40 is disposed in the mounting sleeve 20 and abuts against the end of the pen refill rod 30 away from the pen tip.

[0036] In this embodiment, the pen refill sleeve 10 is a through-hole rotating body with a central hole and openings at both ends. One end can be fitted with a pen tip, and the other end is connected to the mounting sleeve 20. The pen refill sleeve 10 can be inserted into the mounting sleeve 20, or the mounting sleeve 20 can be inserted into the pen refill sleeve 10. Alternatively, the two can be connected by ultrasonic welding or glue. The mounting sleeve 20 is used to seal one end of the pen refill sleeve 10. The limiting structure includes a first step on the pen refill rod 30, and the inner wall of the pen refill sleeve 10 has a second step corresponding to the first step. The first sealing ring 51 is disposed between the first and second steps.

[0037] This invention provides a pen tip assembly, which includes a pen refill sleeve 10, a mounting sleeve 20 fixedly disposed at one end of the pen refill sleeve 10, a pen refill rod 30 disposed within the pen refill sleeve 10, a pressure sensor 40 disposed within the mounting sleeve 20 and abutting against the pen refill rod 30, and a first sealing ring 51 disposed between the pen refill rod 30 and the pen refill sleeve 10. The first sealing ring 51 prevents liquid from entering the mounting sleeve 20 through the gap between the pen refill sleeve 10 and the pen refill rod 30, thus solving the problem of the stylus lacking waterproof functionality. Simultaneously, the limiting structure prevents the pen refill rod 30 from detaching from the pen refill sleeve 10. The first sealing ring 51 is disposed within and compressed by both the pen refill rod 30 and the pen refill sleeve 10, thereby allowing the pen refill rod 30 a certain amount of elastic movement space along the axial direction.

[0038] In one embodiment, reference is made to Figure 1 and Figure 2 The pen refill sleeve 10 and the mounting sleeve 20 are interlocked. The outer wall of the pen refill sleeve 10 is provided with a snap-fit ​​protrusion 11, which is located at the end of the pen refill sleeve 10 away from the pen tip. The mounting sleeve 20 is provided with a buckle 21 that matches the snap-fit ​​protrusion 11. In this embodiment, the pen refill sleeve 10 and the mounting sleeve 20 are detachably connected by providing the snap-fit ​​protrusion 11 and the buckle 21. When it is necessary to replace or repair the internal pressure sensor 40, the buckle 21 can be pried open radially to disengage the snap-fit ​​protrusion 11, and then the pen refill sleeve 10 and the mounting sleeve 20 can be separated.

[0039] In one embodiment, reference is made to Figure 1 and Figure 2A second sealing ring 52 is provided between the outer wall of the pen refill sleeve 10 and the inner wall of the mounting sleeve 20. A first annular groove is also provided on the outer periphery of the pen refill sleeve 10, located on the side of the snap-fit ​​protrusion 11 near the pen tip. A second annular groove corresponding to the first annular groove is also provided on the inner wall of the mounting sleeve 20. The second sealing ring 52 is located between the first and second annular grooves. By providing the first and second annular grooves, the second sealing ring 52 can be fixed, and by providing the second sealing ring 52, the gap between the mounting sleeve 20 and the pen refill sleeve 10 is blocked, preventing liquid and dust from entering the mounting sleeve 20 through the gap.

[0040] In one embodiment, reference is made to Figure 1 and Figure 2 The bottom of the mounting sleeve 20 is also provided with a wire passage hole, through which the signal wire of the pressure sensor 40 passes. Waterproof adhesive is also provided at the wire passage hole. In this embodiment, the signal wire is a ribbon cable, the aforementioned wire passage hole is a strip-shaped hole, and the waterproof adhesive is silicone. The silicone fills the gap between the ribbon cable and the wire passage hole, preventing external liquids and dust from entering the interior of the mounting sleeve 20 through the wire passage hole.

[0041] In one embodiment, reference is made to Figure 1 and Figure 2 The snap-fit ​​protrusion 11 forms a guide slope on the side wall away from the pen tip. By setting the guide slope, it is convenient for the mounting sleeve 20 to align with the pen refill sleeve 10 along the guide slope, and then the limiting protrusion snaps into the buckle 21.

[0042] In one embodiment, reference is made to Figure 1 and Figure 2 The pen refill 30 has a mounting hole at its end away from the mounting sleeve 20. The pen tip assembly also includes a pen tip portion disposed in the mounting hole, extending from the end of the pen refill sleeve 10 away from the mounting sleeve 20. The pen tip portion is a plastic part, comprising a cylindrical section and a conical section. The larger end of the conical section is connected to one end of the cylindrical section, and the two are coaxially arranged. The cylindrical section is inserted into the mounting hole, and the two fit tightly together. The pointed end of the conical section serves as the writing end.

[0043] The present invention also proposes a stylus, including the aforementioned pen tip assembly. By providing a first sealing ring 51, liquid can be prevented from entering the mounting sleeve 20 through the gap between the pen tip sleeve 10 and the pen tip rod 30, thus solving the problem that the stylus lacks waterproof functionality.

[0044] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pen tip assembly, characterized in that, include: A pen refill sleeve, wherein the outer wall of the pen refill sleeve is provided with snap-fit ​​protrusions; The mounting sleeve is fixedly installed at the end of the pen refill sleeve away from the pen tip, and the pen refill sleeve and the mounting sleeve are inserted into each other; A pen refill rod is disposed in the pen refill sleeve. The pen refill rod is provided with a limiting structure that restricts its movement toward the pen tip. The limiting structure includes a first step disposed on the pen refill rod, and a second step corresponding to the first step is provided on the inner wall of the pen refill sleeve. A first sealing ring is disposed at the limiting structure and located between the first step and the second step. The first step and the second step compress the first sealing ring so that the pen refill rod has a certain elastic movement space along the axial direction. A pressure sensor is disposed in the mounting sleeve and abuts against the end of the pen refill rod away from the pen tip. The bottom of the mounting sleeve is also provided with a wire hole through which the signal wire of the pressure sensor passes. The second sealing ring is disposed between the outer wall of the pen refill sleeve and the inner wall of the mounting sleeve; The outer periphery of the pen refill sleeve is also provided with a first annular groove, which is located on the side of the snap-fit ​​protrusion near the pen tip. The inner wall of the mounting sleeve is also provided with a second annular groove corresponding to the first annular groove, and the second sealing ring is located between the first annular groove and the second annular groove.

2. The pen tip assembly according to claim 1, characterized in that, The snap-fit ​​protrusion is located at the end of the pen refill sleeve away from the pen tip, and the mounting sleeve is provided with a buckle that matches the snap-fit ​​protrusion.

3. The pen tip assembly according to claim 1, characterized in that, Waterproof adhesive is also provided at the wire hole.

4. The pen tip assembly according to claim 2, characterized in that, The snap-fit ​​protrusion forms a guide ramp on the sidewall away from the pen tip.

5. The pen tip assembly according to claim 1, characterized in that, The pen refill tube has a mounting hole at the end away from the mounting sleeve, and the pen tip assembly also includes a pen tip portion disposed in the mounting hole, the pen tip portion extending from the end of the pen refill tube away from the mounting sleeve.

6. A stylus, characterized in that, The pen tip assembly includes any one of claims 1-5.

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