Title:
DUMBBELL-LIKE AND OLIVE-LIKE ASYMMETRIC BIDIRECTIONAL TAPER THREADED CONNECTION PAIR
Document Type and Number:
WIPO Patent Application WO/2019/192578
Kind Code:
A1
Abstract:
Provided is a dumbbell-like and olive-like asymmetric bidirectional taper threaded connection pair, comprising an external thread (9) and an internal thread (6) that are mutually coupled in a threaded manner. The internal thread (6) is a bidirectional taper hole (41) on an inner surface of a cylindrical parent body (2). The external thread (9) is a bidirectional truncated cone (71) on an outer surface of a column parent body (3). A complete unit body thread is a bidirectional cone which is dumbbell shaped (94) with a left taper (95) greater than a right taper (96) and/or olive-shaped (93) with the left taper (95) smaller than the right taper (96), wherein, the performance thereof mainly depends on a conical surface area and a taper size of the mutually coupled thread body. The inner and outer threads of the threaded connection pair form a thread pair (10) with multiple sections of conical pairs in a way that the taper hole encloses the cone, and by means of the bidirectional taper hole (41) and the bidirectional truncated cone (71), so as to form a sizing coordinate or a sizing interference on a spiral conical plane to an inner and an outer cone, in order to realize a screw thread connection function. The problem of poor self-positioning and self-locking of existing thread is solved.
Inventors:
YOU YIHUA (CN)
Application Number:
PCT/CN2019/081403
Publication Date:
October 10, 2019
Filing Date:
April 04, 2019
Export Citation:
Assignee:
YOU YIHUA (CN)
International Classes:
F16B33/02
Foreign References:
| CN105443546A | 2016-03-30 | |||
| CN205315435U | 2016-06-15 | |||
| CN105443543A | 2016-03-30 | |||
| GB826136A | 1959-12-31 | |||
| CN105443542A | 2016-03-30 | |||
| US9140292B2 | 2015-09-22 |
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