Title:
ダストカバー、サスペンション装置及びダストカバーの製造方法
Document Type and Number:
Japanese Patent JP7223369
Kind Code:
B2
Abstract:
A method for manufacturing a substantially cylindrical dust cover (6) covering an outer side of a damper (3) extending in a predetermined direction and including bellows portions (61) that are configured to expand and contract in an axial direction and a flange portion (63) that extends radially outward, wherein an inner wall surface (110) of a mold (100) used in blow molding has a recess (130) corresponding to the flange portion (63), and wherein the mold (100) has a variable mechanism that changes an axial dimension of the recess (130) between a primary molding distance and a final molding distance, the final molding distance corresponding to a thickness of the flange portion (63), and the primary molding distance being larger than the final molding distance, the method for manufacturing the dust cover (6) comprising: a placement step of placing a molten thermoplastic resin having a tubular shape inside the mold (100) in a state where an axial dimension of the recess (130) of the inner wall surface (110) is set to the primary molding distance; a primary molding step of blowing air into the thermoplastic resin placed inside the mold (100) in the placement step to deform the thermoplastic resin along the inner wall surface (110) of the mold (100); and a secondary molding step of compressing, in the axial direction, a portion of the thermoplastic resin that is molded in the primary molding step and enters the recess (130) by changing the axial dimension of the recess (130) of the inner wall surface (110) to the final molding distance.
More Like This:
| JPH10292840 | HYDRAULIC SHOCK ABSORBER |
| JP2005265158 | VIBRATION-PROOF RUBBER FORMED BODY |
| JP6001954 | Buffer |
Inventors:
Hiroro Kawano
Shoji Shimizu
Shoji Shimizu
Application Number:
JP2019060543A
Publication Date:
February 16, 2023
Filing Date:
March 27, 2019
Export Citation:
Assignee:
Subaru corporation
Excel Co., Ltd.
Excel Co., Ltd.
International Classes:
F16F9/38; B60G15/06; F16J3/04; F16J15/52
Domestic Patent References:
| JP2016089935A | ||||
| JP2017133550A | ||||
| JP60199632A | ||||
| JP2016084890A | ||||
| JP2015190552A | ||||
| JP10159975A | ||||
| JP2008240774A |
Attorney, Agent or Firm:
Tatsushi Shigeizumi
Toshiyuki Araki
Toshiyuki Araki