Title:
CONNECTION STRUCTURE HAVING DUMBBELL-SHAPED BIDIRECTIONAL TAPERED EXTERNAL THREAD AND TRADITIONAL THREAD HAVING LARGE LEFT TAPER AND SMALL RIGHT TAPER
Document Type and Number:
WIPO Patent Application WO/2019/192566
Kind Code:
A1
Abstract:
A connection structure having a dumbbell-shaped bidirectional tapered external thread and a traditional thread having a large left taper and a small right taper, comprising an external thread (9) which is a dumbbell-shaped (94) bidirectional truncated cone (71) having a small middle and two large ends wherein an outer surface of a columnar base body (3) is a spiral and the left-side taper (95) of a complete unit body thread is larger than the right-side taper (96), having the ability to assimilate a traditional internal thread (6); after being assimilated, the internal thread (6) is a special tapered hole (4) of a cylindrical main body (2) an inner surface of which is a spiral. The present invention solves the problems of existing threads wherein self-positioning and self-locking are poor, performance mainly depending on the conical surface and taper size of the thread body; the present invention has the following advantages: inner and outer threads form sections of conical pairs each formed by a special tapered hole (4) and a bidirectional conical body (71) by means of the tapered hole containing the conical body so as to form a thread pair (10) until inner and outer cones experience spiral conical surface sizing cooperation or sizing interference, thereby achieving threaded connection.
Inventors:
YOU YIHUA (CN)
Application Number:
PCT/CN2019/081391
Publication Date:
October 10, 2019
Filing Date:
April 04, 2019
Export Citation:
Assignee:
AMICUS VERITATIS MACHINERY CO LTD (CN)
International Classes:
F16B33/02; F16B39/282
Foreign References:
| CN105443542A | 2016-03-30 | |||
| CN205349975U | 2016-06-29 | |||
| GB826136A | 1959-12-31 | |||
| DE102015209642A1 | 2016-05-12 |
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