Title:
FLOW RATE CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2016/140079
Kind Code:
A1
Abstract:
A flow rate control valve (CV) provided with seal members (S1-S3) arranged diametrically between a housing (1) and a valve body (3) rotatably supported inside the housing (1), the seal members hermetically sealing the space diametrically between the housing (1) and the valve body (3) by sliding against the outer peripheral surface of the valve body (3), wherein concave level difference parts (N1, N2) recessed lower than sliding contact surfaces, which are the outer peripheral surfaces of seal-sliding parts (D1-D3), are provided, and parting lines (P1, P2) are provided within the level difference parts (N1, N2), whereby it is possible to suppress damage to seal surfaces (S1a-S3a) of the seal members (S1-S3) caused by sliding against the parting lines (P1, P2) when the seal surfaces (S1a-S3a) pass through the parting lines (P1, P2).
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Inventors:
MURAKAMI SHINGO (JP)
Application Number:
PCT/JP2016/054795
Publication Date:
September 09, 2016
Filing Date:
February 19, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16K11/076; F16K11/08
Foreign References:
| JP2000130610A | 2000-05-12 | |||
| JPH0828725A | 1996-02-02 | |||
| JPH01206169A | 1989-08-18 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
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