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Title:
CONNECTION STRUCTURE OF TRADITIONAL THREAD AND EXTERNAL THREAD OF THREAD OUTLINING ASYMMETRICALLY AND BIDIRECTIONALLY TAPERED DUMBBELL SHAPE
Document Type and Number:
WIPO Patent Application WO/2019/192577
Kind Code:
A1
Abstract:
A connection structure of a traditional thread and an external thread of a thread outlining an asymmetrically and bidirectionally tapered dumbbell-shape, solving the problems of poor self-positioning and self-locking of existing threads, etc. An external thread (9) forms a helical shape on the outer surface of a columnar body (3), and the complete threaded body unit forms a bidirectionally tapered-frustum body (71) in a dumbbell-shape (94) having the left-end conical degree (95) being greater than and/or smaller than the right-end conical degree (96). The external thread has the capability of fitting a traditional internal thread (6), the fitted internal thread (6) on the inner surface of a cylindrical body (2) outlines a helical special tapered hole (4), and the performance mainly depends on the tapered surface and the conical degrees of the threaded body. The advantage is that: the internal thread and the external thread outline the tapered body by means of the tapered hole, such that the special tapered hole (4) and the bidirectionally tapered-frustum body (71) form a thread pair (10) with joints of tapered pairs until the inner and outer tapered bodies have helical tapered faces with sizing fit or sizing interference, so as to realize the threaded connection function.

Inventors:
YOU, Yihua (No. 30 Yuxing East Street, Yucheng Subdistrict Yuhua, Taizhou Zhejiang 0, 317600, CN)
Application Number:
CN2019/081402
Publication Date:
October 10, 2019
Filing Date:
April 04, 2019
Export Citation:
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Assignee:
YOU, Yihua (No. 30 Yuxing East Street, Yucheng Subdistrict Yuhua, Taizhou Zhejiang 0, 317600, CN)
International Classes:
F16B33/02; F16B39/28
Foreign References:
CN105443542A2016-03-30
CN105443546A2016-03-30
CN201159232Y2008-12-03
CN206449096U2017-08-29
EP1936212A22008-06-25
US20160348709A12016-12-01
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