Title:
NEGATIVE-PRESSURE BOOSTER DEVICE, BRAKE SYSTEM PROVIDED WITH SAID NEGATIVE-PRESSURE BOOSTER DEVICE, AND METHOD FOR MANUFACTURING A PLATE PLUNGER FOR A NEGATIVE-PRESSURE BOOSTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/161878
Kind Code:
A1
Abstract:
A plate plunger (17) that determines the servo ratio (SR) of the disclosed negative-pressure booster device (1) has an angled servo-ratio-determination surface (17c), which determines the servo ratio, at a corner between an outer surface of the plate plunger (17) and a surface of the plate plunger that faces a reaction disc (16). Said servo-ratio-determination surface (17c) comprises a surface (17f) that contacts the reaction disc and determines the servo ratio and a surface (17g) that does not contact the reaction disc. A variety of different servo ratios can be obtained by performing secondary processing such as cutting or grinding on just the servo-ratio-determination surface (17c) to change the outer diameter of the surface (17f) that contacts the reaction disc.
Inventors:
YAMAGA, Hiroyuki (1464-4 Tsukinowa, Namegawa-machi, Hiki-gu, Saitama 13, 〒3550813, JP)
Application Number:
JP2011/003032
Publication Date:
December 29, 2011
Filing Date:
May 31, 2011
Export Citation:
Assignee:
BOSCH CORPORATION (6-7 Shibuya 3-chome, Shibuya-ku Tokyo, 60, 〒1508360, JP)
ボッシュ株式会社 (〒60 東京都渋谷区渋谷３丁目６番７号 Tokyo, 〒1508360, JP)
ボッシュ株式会社 (〒60 東京都渋谷区渋谷３丁目６番７号 Tokyo, 〒1508360, JP)
International Classes:
B60T13/573
Attorney, Agent or Firm:
AOKI, Kenji et al. (AZUSA PATENT OFFICE, Ueno Suzuki Building 7th Floor 16-3, Ueno 3-chome, Taito-k, Tokyo 05, 〒1100005, JP)
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Claims:
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