Title:
DUMBBELL-SHAPED ASYMMETRIC BIDIRECTIONAL TAPERED THREAD CONNECTION PAIR HAVING LARGER LEFT TAPER AND SMALL RIGHT TAPER
Document Type and Number:
WIPO Patent Application WO/2019/192564
Kind Code:
A1
Abstract:
A dumbbell-shaped asymmetric bidirectional tapered thread connection pair having a larger left taper and a small right taper, relating to the field of general purpose technologies of devices, and solving the problems of poor self-positioning and self-locking properties of an existing thread. An internal thread (6) of the thread connection pair (10) is a bidirectional tapered hole (41) on the inner surface of a cylindrical base body (2), and an external thread (9) is a bidirectional truncated cone body (71) on the outer surface of a columnar base body (3). Complete unit body threads are both helical, dumbbell-shaped (94), special bidirectional cone bodies each having a larger left taper (95) than right taper (96) and being small in the middle and large at both ends. The performance mainly depends on the conical surfaces and the tapers of threaded bodies matching each other. The following advantages are achieved: the internal and external threads are formed into a thread pair (10) by means of cone pairs constituted by the bidirectional tapered hole (41) and the bidirectional truncated cone body (71) by receiving the cone body in the tapered hole, until helical conical surfaces of inner and outer cones are in fixed-diameter fit or fixed-diameter interference, thereby implementing a thread connection function.
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Inventors:
YOU YIHUA (CN)
Application Number:
PCT/CN2019/081389
Publication Date:
October 10, 2019
Filing Date:
April 04, 2019
Export Citation:
Assignee:
AMICUS VERITATIS MACHINERY CO LTD (CN)
International Classes:
F16B33/02; F16B37/00
Foreign References:
| CN105443543A | 2016-03-30 | |||
| CN105443546A | 2016-03-30 | |||
| GB826136A | 1959-12-31 | |||
| CN1036622A | 1989-10-25 | |||
| CN105443542A | 2016-03-30 |
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