INJECTION MOLDING SHAFT

Title:

INJECTION MOLDING SHAFT

Document Type and Number:

WIPO Patent Application WO/2015/105062

Kind Code:

A1

Abstract:

[Problem] To provide an injection molding shaft with which shock caused by sudden fluctuations in torque can be absorbed by twisting deformation of the shaft main body when sudden fluctuations in torque occur. [Solution] In a shaft main body (2), one axial end of a core part (18), having a cross-shaped cross section perpendicular to the axis is connected to a helical gear (3) via a first connecting part (15), and the other axial end of the core part (18) is connected to a worm (4) via a second connecting part (16). Multiple first framework parts (21) are formed at equal intervals on the core part (18) along the axial direction, between the first connecting part (15) and the second connecting part (16). Second framework parts (22) extend obliquely across the first connecting part (15), the first framework parts (21), and the core part (18). Third framework parts (23) extend obliquely across pairs of adjacent first framework parts (21, 21) and the core part (18). Fourth framework parts (24) extend obliquely across the second connecting part (16), the first framework parts (21), and the core part (18).

Inventors:

SUZUKI YASUHIRO (JP)
OKAMOTO SHINICHIRO (JP)

Application Number:

PCT/JP2015/050006

Publication Date:

July 16, 2015

Filing Date:

January 05, 2015

Export Citation:

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Assignee:

ENPLAS CORP (JP)

International Classes:

F16C3/00

Domestic Patent References:

WO2012128213A1

2012-09-27

Foreign References:

JP2005147303A	2005-06-09
JPH11512974A	1999-11-09
JP2003033947A	2003-02-04

Other References: