Title:
CONNECTION STRUCTURE OF BOLT AND NUT WITH OLIVE-SHAPED BIDIRECTIONAL CONICAL THREAD HAVING SMALL LEFT TAPER AND LARGE RIGHT TAPER
Document Type and Number:
WIPO Patent Application WO/2019/192551
Kind Code:
A1
Abstract:
Disclosed is a connection structure of a bolt and a nut with an olive-shaped bidirectional conical thread having a small left taper and a large right taper. An internal thread (6) is a bidirectional conical hole (41) in an inner surface of a tubular matrix (2), an external thread (9) is a bidirectional truncated cone body (71) in an outer surface of a columnar matrix (3), and each of the complete unit threads thereof is an olive-like shape (93) bidirectional conical body with a left-side taper (95) smaller than a right-side taper (96) in the form of a spiral and having a large middle and two small ends; and the performance mainly depends on the circular conical surfaces and taper sizes of thread bodies cooperating with each other. The internal and external threads form a series of circular conical pairs with the bidirectional conical hole (41) and the bidirectional truncated cone body (71) by means of a cone hole containing a cone to form a thread pair (1) until the circular conical surfaces of inner and outer circular cones in the form of spirals are in sizing cooperation or sizing interference to realize a thread connection function. Problems such as the poor self-positioning and self-locking of existing threads are solved.
Inventors:
YOU YIHUA (CN)
Application Number:
PCT/CN2019/081375
Publication Date:
October 10, 2019
Filing Date:
April 04, 2019
Export Citation:
Assignee:
AMICUS VERITATIS MACHINERY CO LTD (CN)
International Classes:
F16B33/02
Foreign References:
| CN105443546A | 2016-03-30 | |||
| GB826136A | 1959-12-31 | |||
| CN201925313U | 2011-08-10 | |||
| JPH08177831A | 1996-07-12 | |||
| DE102015209642A1 | 2016-05-12 |
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