Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2017/138098
Kind Code:
A1
Abstract:
This scroll compressor is provided with a bush including: a shaft portion disposed between an orbiting bearing that supports an orbiting scroll and an eccentric pin of a crankshaft; and a balance weight portion secured by shrink-fitting to the outer circumference of the shaft portion. The shaft portion is provided with: a cylindrically shaped main body portion which is fitted into the orbiting bearing and into which the eccentric pin of the crankshaft is inserted; and a cylindrically shaped linking portion which extends outward from the end portion, in the axial direction, of the main body portion, and to which the balance weight portion is joined. Furthermore, the bush satisfies the following conditions (a) and (b).
(a) 1.2 ≤ D2/D1 ≤ 1.6
(b) 1.0 ≤ (D2-D3)/(D4-D2)×E1/E2 ≤ 3.5
Where D1: external diameter of main body portion, D2: external diameter of linking portion, D3: internal diameter of main body portion, D4: external diameter of balance weight portion, E1: Young's modulus of shaft portion, E2: Young's modulus of balance weight portion
Inventors:
KOYAMA SHUHEI (JP)
MATSUI TOMOKAZU (JP)
TATSUWAKI KOHEI (JP)
TAKAMURA YUJI (JP)
MATSUI TOMOKAZU (JP)
TATSUWAKI KOHEI (JP)
TAKAMURA YUJI (JP)
Application Number:
PCT/JP2016/053859
Publication Date:
August 17, 2017
Filing Date:
February 09, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/02
Foreign References:
| JP2003239881A | 2003-08-27 | |||
| JPH10281083A | 1998-10-20 |
Other References:
See also references of EP 3415760A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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