Brake Fluid Pressure Generation Device Orientation for Cabin Space
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Solution Overview
Problem
Conventional vehicle braking systems that do not require driver input struggle with optimizing cabin space when the brake operation part is not provided in the vehicle cabin, as the layout of brake fluid pressure generation devices often necessitates a larger storage chamber, limiting cabin space expansion.
Innovation Solution
A vehicle braking device with a brake fluid pressure generation device located in a storage chamber separate from the vehicle cabin, where the brake operation part is mechanically connected but not within the cabin, allowing for a non-traditional arrangement of the brake fluid pressure generation device, such as having its sliding direction parallel to the vehicle width direction, overlapping with other components, or being arranged in an upper part to maximize cabin space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the brake fluid pressure generation device is arranged in the storage chamber with conventional layout (extending in vehicle front-rear direction), then the device can be mechanically connected to the brake operation part, but the storage chamber size increases, reducing vehicle cabin space
Solution Approach 1:
The brake fluid pressure generation device is reoriented to extend in the vehicle width direction instead of the conventional front-rear direction, utilizing a different spatial dimension. This dimensional change allows the device to fit within the storage chamber more efficiently, reducing the required storage chamber volume while maintaining mechanical connection capability, thereby increasing vehicle cabin space.
Solution Approach 2:
The patent employs asymmetric arrangement of the brake fluid pressure generation device components within the storage chamber. The master cylinder and reservoir are positioned at different heights and locations, with the master cylinder extending in the vehicle width direction while the reservoir is arranged above it. This asymmetric layout optimizes space utilization and reduces the overall storage chamber size required.
2Area of stationary object
If the brake operation part is not provided in the vehicle cabin to increase cabin space, then cabin space increases, but the brake fluid pressure generation device requires larger storage chamber to accommodate the mechanical connection
Solution Approach 1:
The brake fluid pressure generation device is arranged vertically within the storage chamber, with the reservoir positioned above the master cylinder in the vehicle height direction. This vertical arrangement utilizes the height dimension of the storage chamber, allowing the mechanical connection to the brake operation part (located outside the cabin) to be achieved through the floor panel while keeping the device footprint minimal, thus simplifying the overall arrangement.
Solution Approach 2:
The reservoir is arranged partially overlapping with the master cylinder in the vehicle front-rear direction, with the reservoir positioned above and extending rearward from the master cylinder. This nested arrangement allows the reservoir to utilize the space above and behind the master cylinder, reducing the total volume required for both components while maintaining their functional independence.
Data Source
AI summary
A vehicle braking device includes: a brake fluid pressure generation device arranged in a storage chamber separated from a vehicle cabin; and a brake operation part mechanically connected to the brake fluid pressure generation device, the brake operation part being not provided in the vehicle cabin. The brake fluid pressure generation device includes a cylinder and pistons configured to slide inside the cylinder. The brake fluid pressure generation device is configured to generate brake fluid pressure in accordance with strokes of the pistons. The brake fluid pressure generation device is arranged such that a sliding direction of the pistons is along a direction different from the vehicle front-rear direction in a plan view.