Title:
MOLD FOR INJECTION MOLDING
Document Type and Number:
Japanese Patent JP3705487
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a mold for injection molding in which an outside pole can be pressed to a member for deciding its inner diameter size with a simple constitution.
SOLUTION: The mold for injection molding to mold a resin layer 5 on a periphery of the outside pole 1 having combtooth-like shaped parts 1a to 1e and assembled in a motor comprises an inner periphery control member 17 brought into contact with the inner peripheral surface of the combtooth-like parts of the pole to decide the inner peripheral size of the combtooth-like parts, and gates 10a to 10e opened at positions corresponding to a substantially center of the combtooth-like parts to inject a resin material so that the combtooth parts are pressed to the inner periphery control member by pressures of the resin materials to be injected from the gates.
Inventors:
Hiroshi Koizumi
Application Number:
JP2001381625A
Publication Date:
October 12, 2005
Filing Date:
December 14, 2001
Export Citation:
Assignee:
Canon Electronics Inc.
International Classes:
B29C45/26; B29C33/12; B29C45/14; H02K37/14; B29K105/20; B29L31/08; (IPC1-7): B29C45/14; B29C33/12; H02K37/14
Domestic Patent References:
| JP2086418A | ||||
| JP9047007A | ||||
| JP2002361678A |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
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