Reservoir tank and hydraulic brake device
The reservoir tank design with a forward-positioned storage chamber and groove addresses the issue of float failure during brake fluid leaks, ensuring reliable detection of master cylinder port failures.
WO2026126048A1PCT designated stage Publication Date: 2026-06-18ROBERT BOSCH GMBH
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2025-12-08
- Publication Date
- 2026-06-18
Smart Images
Figure IB2025062540_18062026_PF_FP_ABST
Abstract
Regarding a reservoir tank in which a retention chamber is disposed at a position shifted toward the forward direction F of a vehicle from a master cylinder, in a state in which a vehicle that uses such a reservoir tank is inclined forward, a float is not lowered sufficiently when brake fluid flows out due to failure of one of the ports of the master cylinder, and failure of the port of the master cylinder cannot be detected. The present invention comprises a groove (21a) that is provided to a bottom surface (4a) of a passage chamber (4) extending at least in the forward direction (F) of a vehicle from a primary port (21) and / or a secondary port (22).
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