Title:
VACUUM BOOSTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/084853
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a vacuum booster device such that the length of an attachment portion on the attached member side of a tie rod bolt can be increased while limiting an increase in the size of a tie rod bolt forging device. An attachment portion (rear end portion) on the attached member side of a tie rod bolt of a vacuum booster device includes a screw lower part, an extension part, and swaging part formed in that order from an end (rear end) thereof. A screw lower diameter that is the outer diameter of the screw lower part, an extension part diameter that is the outer diameter of the extension part, and a swaging part diameter that is the outer diameter of the swaging part are set to be larger in that order.
Inventors:
SAKAI TOMOYASU (JP)
OYAMA HIROSHI (JP)
HIGASHI NAOKI (JP)
OYAMA HIROSHI (JP)
HIGASHI NAOKI (JP)
Application Number:
PCT/JP2015/083102
Publication Date:
June 02, 2016
Filing Date:
November 25, 2015
Export Citation:
Assignee:
ADVICS CO LTD (JP)
MORIOKA INDUSTRY CO LTD (JP)
MARUKICHI KOGYO CO LTD (JP)
MORIOKA INDUSTRY CO LTD (JP)
MARUKICHI KOGYO CO LTD (JP)
International Classes:
B60T13/567
Foreign References:
JPS622470U | 1987-01-09 | |||
JPH03103867U | 1991-10-29 | |||
JPH0377738A | 1991-04-03 | |||
JP2008024293A | 2008-02-07 |
Attorney, Agent or Firm:
KOBAYASHI Osamu et al. (JP)
Kobayashi 脩 (JP)
Kobayashi 脩 (JP)
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