US 11,966,522 B2
Stylus pen and pen core thereof
Ho Lung Lu, New Taipei (TW); Shih-Hsiung Hsiao, New Taipei (TW); and Chun Te Yu, New Taipei (TW)
Assigned to DEXIN CORP., New Taipei (TW)
Filed by DEXIN CORP., New Taipei (TW)
Filed on Dec. 27, 2022, as Appl. No. 18/089,296.
Claims priority of provisional application 63/347,936, filed on Jun. 1, 2022.
Prior Publication US 2023/0393671 A1, Dec. 7, 2023
Int. Cl. G06F 3/0354 (2013.01)
CPC G06F 3/03545 (2013.01) 9 Claims
OG exemplary drawing
 
1. A stylus pen, comprising:
a penholder comprising a rod body and an electrode structure disposed on the rod body; and
a pen core comprising a tip portion located at one end of the rod body and an insertion portion connected to the tip portion and removably inserted into the rod body, wherein the tip portion is spaced apart from the electrode structure;
wherein the insertion portion is electrically conductive and the tip portion is made of material being electrically conductive and writable on paper;
wherein the insertion portion comprises a rod portion, an abutting block portion, and an embedded portion, the abutting block portion is connected between the rod portion and the embedded portion, the abutting block portion has a cross-section in trapezoidal shape, the embedded portion is inserted into the tip portion and is tapered away from the abutting block portion, and the abutting block portion is tapered away from the embedded portion;
wherein the embedded portion comprises an extension part and a tapered part, one side of the extension part is connected to the abutting block portion, the tapered part of the embedded portion has a first end, a second end located opposite to the first end, an end surface and an annular inclined surface, the first end of the tapered part is connected to another side of the extension part, an outer diameter of the first end of the tapered part is equal to an outer diameter of the extension part, an outer diameter of the second end of the tapered part is smaller than the outer diameter of the first end of the tapered part, the end surface is located at the second end, the annular inclined surface extends from the first end to the second end of the tapered part, and the annular inclined surface is at an obtuse angle to the end surface.