CN-115421601-B - Nib subassembly and handwriting pen

Abstract

The invention discloses a pen point assembly and a handwriting pen, wherein the pen point 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 abutted with a pen core rod, and a first sealing ring arranged between the pen core rod and the pen core sleeve, and the problem that the handwriting pen does not have a waterproof function is solved by arranging the first sealing ring to prevent liquid from entering the mounting sleeve from a gap between the pen core sleeve and the pen core rod.

Inventors

• HUANG YANXIN
• LI BIN

Assignees

• 深圳市千分一智能技术有限公司

Dates

Publication Date

20260508

Application Date

20220810

Claims (6)

1. 1. A nib assembly, comprising: the outer wall of the pen refill sleeve is provided with a clamping protrusion; the pen refill sleeve is fixedly arranged at one end, far away from the pen point, of the pen refill sleeve, and the pen refill sleeve and the mounting sleeve are spliced; The pen core rod is arranged in the pen core sleeve, a limiting structure for limiting the pen core rod to move towards the direction of the pen point is arranged on the pen core rod, the limiting structure comprises a first step arranged on the pen core rod, and a second step corresponding to the first step is arranged on the inner wall of the pen core sleeve; The first sealing ring is arranged at the limiting structure and positioned between the first step and the second step, and the first step and the second step compress the first sealing ring so that the refill rod has a certain elastic movable space along the axial direction; The pressure sensor is arranged in the mounting sleeve and is abutted against one end, far away from the pen point, of the pen core rod, a wire passing hole is further formed in the bottom of the mounting sleeve, and a signal wire of the pressure sensor passes through the wire passing hole; the second sealing ring is arranged between the outer wall of the pen refill sleeve and the inner wall of the mounting sleeve; The pen refill is characterized in that a first annular groove is further formed in the periphery of the pen refill sleeve, the first annular groove is located at one side, close to the pen point, of the clamping protrusion, a second annular groove corresponding to the first annular groove is further formed in the inner wall of the mounting sleeve, and the second sealing ring is located between the first annular groove and the second annular groove.
2. 2. The nib assembly of claim 1, wherein the snap-fit protrusion is located at an end of the cartridge sleeve remote from the nib, and the mounting sleeve is provided with a snap-fit with the snap-fit protrusion.
3. 3. The nib assembly of claim 1, wherein the wire through hole is further provided with a waterproof glue.
4. 4. The nib assembly of claim 2, wherein a sidewall of the snap-in projection away from the nib forms a guiding ramp.
5. 5. The nib assembly of claim 1, wherein an end of the cartridge rod remote from the mounting sleeve is provided with a mounting hole, the nib assembly further comprising a nib disposed in the mounting hole, the nib extending from an end of the cartridge sleeve remote from the mounting sleeve.
6. 6. A stylus comprising a nib assembly according to any one of claims 1 to 5.

Description

Nib subassembly and handwriting pen Technical Field The invention relates to the field of intelligent writing pens, in particular to a pen point assembly and a writing pen. Background Existing smart handwriting pens in the market are structurally biased to achieve basic writing functions, pursuing lower latency and higher accuracy. The waterproof and dustproof functions of the pen are not important. But in life, accidents such as tea, coffee and the like are avoided, so that liquid is contacted with the pen point of the intelligent handwriting pen, the liquid can stretch into the pen point, short circuit or rust of internal electronic hardware is easily caused, normal use of the intelligent handwriting pen is affected, and user experience is reduced. Disclosure of Invention The invention mainly aims to provide a pen point assembly and a handwriting pen, and aims to solve the problem that the conventional handwriting pen does not have a waterproof function. To achieve the above object, the present invention provides a nib assembly including: A refill sleeve; the mounting sleeve is fixedly arranged at one end of the pen core sleeve far away from the pen point; The pen core rod is arranged in the pen core sleeve, and a limiting structure for limiting the pen core rod to move towards the direction of the pen point is arranged on the pen core rod; the first sealing ring is arranged at the limiting structure; the pressure sensor is arranged in the mounting sleeve and is abutted with one end of the pen core rod, which is far away from the pen point. In an embodiment, the limit structure comprises a first step arranged on the pen core rod, a second step corresponding to the first step is arranged on the inner wall of the pen core sleeve, and the first sealing ring is arranged between the first step and the second step. In an embodiment, the refill cover and the installation cover are inserted and arranged, the outer wall of the refill cover is provided with a clamping protrusion, the clamping protrusion is positioned at one end of the refill cover away from the pen point, and the installation cover is provided with a buckle matched with the clamping protrusion. In one embodiment, a second sealing ring is arranged between the outer wall of the pen refill sleeve and the inner wall of the mounting sleeve. In an embodiment, the periphery of the refill cover is further provided with a first annular groove, the first annular groove is located on one side, close to the pen point, of the clamping protrusion, the inner wall of the mounting cover is further 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. In an embodiment, a wire through hole is further formed in the bottom of the mounting sleeve, and a signal wire of the pressure sensor passes through the wire through hole. In an embodiment, the wire through hole is further provided with waterproof glue. In one embodiment, the side wall of the clamping protrusion away from the pen point forms a guiding slope. In one embodiment, the end of the pen core rod away from the mounting sleeve is provided with a mounting hole, and the pen point assembly further comprises a pen point part arranged in the mounting hole, and the pen point part extends out from the end of the pen core sleeve away from the mounting sleeve. The invention also provides a handwriting pen, which comprises the pen point assembly. The invention provides a pen point assembly, which 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 abutted with a pen core rod, and a first sealing ring arranged between the pen core rod and the pen core sleeve, wherein liquid can be prevented from entering the mounting sleeve from a gap between the pen core sleeve and the pen core rod by arranging the first sealing ring, so that the problem that a handwriting pen does not have a waterproof function is solved. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of a nib assembly according to an embodiment of the present invention; Fig. 2 is a cross-sectional view of the nib assembly of the embodiment of fig. 1. Reference numerals illustrate: the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the