Title:
MULTIPLE INTEGRAL TYPE BUTTERFLY VALVE FOR INTAKE CONTROL DEVICE IN MULTICYLINDER INTERNAL COMBUSTION ENGINE AND MANUFACTURING DEVICE THEREOF
Document Type and Number:
Japanese Patent JP2824447
Kind Code:
B2
Abstract:
PURPOSE: To improve a part in lightening weight and providing high accuracy and mechanical strength by integrally molding a valve element and turn shaft of a multiple integral type butterfly valve for an intake control device by a resin material containing reinforcing fiber, and further by orienting this reinforcing fiber in an axial line direction of the turn shaft.
CONSTITUTION: Relating to a cavity by which an external shape of a multiple integral type butterfly valve 21 is formed, an injection port is provided in a region of a part corresponding to a distance from a part corresponding to one end part of a turn shaft 21b to 1/5 total length thereof. By injection filling a resin material containing reinforcing fiber 21c in the cavity from the injection port, the reinforcing fiber 21c contained in the resin material is continuously oriented in a lengthwise direction of the turn shaft 21b and prevented frog being non-continuous particularly in a region positioned mutually between valve 21a. Accordingly, also contraction deformation of the valve after molding is extremely suppressed, to improve a yield rate of products with high accuracy in the molding dimension, and bending rigidity or twist rigidity of the turn shaft can be increased.
Inventors:
Akira Takahashi
Tohashi Hashimoto
Mitsuhiro Miyake
Yamauchi Shigekazu
Kakinuma Hideo
Akiyuki Shinjo
Shigeyuki Ishiguro
Tsukagoshi Shigeo
Miya Kazukazu
Naoto Nishimoto
Kayoshi Mankichi
Tohashi Hashimoto
Mitsuhiro Miyake
Yamauchi Shigekazu
Kakinuma Hideo
Akiyuki Shinjo
Shigeyuki Ishiguro
Tsukagoshi Shigeo
Miya Kazukazu
Naoto Nishimoto
Kayoshi Mankichi
Application Number:
JP31092393A
Publication Date:
November 11, 1998
Filing Date:
December 10, 1993
Export Citation:
Assignee:
Mikuni Corporation
Mitsubishi Chemical Corporation
Mitsubishi Chemical Corporation
International Classes:
F02M13/02; B29C45/00; B29C45/26; B29D99/00; F02D9/02; F02D9/10; F02M17/40; B29K105/12; B29K105/18; B29L31/00; (IPC1-7): F02D9/02; B29C45/00; B29C45/26; B29D31/00; F02D9/10; F02M13/02; F02M17/40
Domestic Patent References:
| JP6398409A | ||||
| JP240033A | ||||
| JP244974Y2 |
Attorney, Agent or Firm:
Fujihiko Motohiko