发明公开
EP2655144A1 PISTON PRIMAIRE DE MAÎTRE-CYLINDRE TANDEM ET MAÎTRE-CYLINDRE TANDEM EQUIPE D'UN TEL PISTON PRIMAIRE
有权
PRIMÄRKOLBENFÜREINEN TANDEM-MASTERZYLINDER UND TANDEM-MASTERZYLINDER MIT EINEM DERARTIGENPRIMÄRKOLBEN
- 专利标题： PISTON PRIMAIRE DE MAÎTRE-CYLINDRE TANDEM ET MAÎTRE-CYLINDRE TANDEM EQUIPE D'UN TEL PISTON PRIMAIRE
- 专利标题（英）： Primary piston for a tandem master cylinder, and tandem master cylinder provided with such a primary piston
- 专利标题（中）： PRIMÄRKOLBENFÜREINEN TANDEM-MASTERZYLINDER UND TANDEM-MASTERZYLINDER MIT EINEM DERARTIGENPRIMÄRKOLBEN
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申请号： EP11788864.4申请日： 2011-12-01
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公开(公告)号： EP2655144A1公开(公告)日： 2013-10-30
- 发明人: RODRIGUEZ, Marc , BERNADAT, Olivier , LHUILLIER, Laurent , NOBLET, Marc , GATEAU, Julien , GRECH, Daniel , CHARPENTIER, Carole
- 申请人： Robert Bosch GmbH
- 申请人地址： Wernerstrasse 1 70442 Stuttgart DE
- 专利权人： Robert Bosch GmbH
- 当前专利权人： Robert Bosch GmbH
- 当前专利权人地址： Wernerstrasse 1 70442 Stuttgart DE
- 优先权： FR1005013 20101221
- 国际公布： WO2012084450 20120628
- 主分类号： B60T11/16
- IPC分类号： B60T11/16 ; B60T11/20
摘要：
The invention relates to a primary piston (130) consisting of a skirt (132) and an intermediate bottom (131) having a rear surface (131a) receiving the plunger of the brake booster and a front surface (131b) for the telescopic rod and the spring pushing the secondary piston. The front of the skirt (132) comprises longitudinal grooves (137) that are opened at the front (137a) and closed at the back (137b). The body of the skirt (132a) below the grooves (137) and the portion of the skirt between two consecutive grooves (137) in the peripheral direction form a front surface (132S) enabling the main piston to push the secondary piston. The main piston (130) is made in one piece from a plastic material.
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