发明名称 |
String length adjusting device |
摘要 |
Disclosed is a string length adjusting device, which includes a fixed housing including a drum rotation shaft formed in a central region thereof; a rotation housing rotatably coupled with respect to the fixed housing; a winding drum inserted into the fixed housing and the rotation housing and including a winding part around/from which a string is wound or unwound; and a coupling unit guide shaft coupling the fixed housing to the rotation housing, the coupling unit guide shaft guiding up/down operations of the rotation housing for operations of winding or unwinding the string. |
申请公布号 |
US9339089(B2) |
申请公布日期 |
2016.05.17 |
申请号 |
US201214119886 |
申请日期 |
2012.05.24 |
申请人 |
So Youn-Seo |
发明人 |
So Youn-Seo |
分类号 |
B65H75/48;A44B99/00;A43C11/16 |
主分类号 |
B65H75/48 |
代理机构 |
Revolution IP, PLLC |
代理人 |
Revolution IP, PLLC |
主权项 |
1. A string length adjustment device comprising:
a fixed housing including a drum rotation axis formed in a central region thereof; a rotation housing rotatably coupled with respect to the fixed housing; a winding drum inserted into the fixed housing and the rotation housing and including a winding part around/from which a string is wound or unwound; and a coupling unit guide shaft coupling the fixed housing to the rotation housing, the coupling unit guide shaft guiding up/down operations of the rotation housing for operations of winding or unwinding the string, wherein the coupling unit guide shaft includes elastic ribs and protrusions, the elastic ribs being elastically biased in an outward radial direction and the protrusions being formed on the elastic ribs, and wherein the rotation housing includes protrusion supports formed on walls of a shaft insertion hole of the rotation housing to support the protrusions. |
地址 |
Yongin-si KR |