Brake Caliper Internal Oil Line Layout for Faster Exhaust Bleeding

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Solution Overview

Problem

Existing brake calipers with external oil lines suffer from poor heat dissipation and low security stability due to the arrangement of oil lines, and calipers with internal oil lines have complex and inefficient exhaustion processes.

Innovation Solution

A brake caliper design with a caliper body featuring a brake disc groove, piston cylinder, brake-fluid delivery oil line, and exhaust channel integrated within the caliper body, along with an exhaust port and screw for controlled gas exhaustion, allowing for efficient fluid delivery and gas evacuation without the need for caliper inclination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If an external oil line is arranged on the outer side of the caliper, then the structure is simpler to manufacture, but the heat dissipation effect is poor and security stability is low

Engineering Contradiction:

Improveease of manufactureVSAvoidheat dissipation effect

Core Design Contradiction:

Ease of manufactureVSTemperature

Solution Approach 1:

The oil line is merged with the caliper body by being embedded within the caliper housing rather than being externally mounted. This integration allows the oil line to benefit from the caliper body's thermal mass and heat dissipation capabilities while maintaining structural simplicity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The oil line is nested within the caliper body structure, with the oil line channel embedded inside the caliper housing. This nesting arrangement protects the oil line from external damage while utilizing the caliper body as a thermal sink for heat dissipation.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of manufacture

If an external oil line is arranged on the outer side of the caliper, then the structure is simpler to manufacture, but security stability is low due to exposed oil pipe

Engineering Contradiction:

Improveease of manufactureVSAvoidsecurity stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The oil line is merged with the caliper body by being embedded within the caliper housing rather than being externally mounted. This integration protects the oil line from external impacts and damage while maintaining structural simplicity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If exhaust ports and exhaust screws are arranged on each of two sides of the piston cylinder, then complete exhaustion can be achieved, but the exhaustion operation becomes complex and efficiency is low

Engineering Contradiction:

Improveexhaustion completenessVSAvoidexhaustion operation complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Two exhaust functions (from both sides of the piston cylinder) are merged into a single exhaust port location. The exhaust channel is designed to collect and channel air bubbles from both sides of the piston cylinder to a single exhaust outlet, simplifying the exhaustion operation to require only one exhaust screw adjustment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The exhaust channel extends through the caliper body in a three-dimensional path, collecting air bubbles from multiple locations (both sides of the piston cylinder) and converging them to a single exhaust port. This spatial arrangement maintains complete exhaustion capability while simplifying the user interface to a single exhaust control point.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Ease of operation

If the caliper body is inclined during exhaustion, then proper positioning of exhaust ports is achieved, but the exhaustion process becomes time-consuming and inefficient

Engineering Contradiction:

Improveexhaust port positioningVSAvoidexhaustion time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The exhaust function is merged into a single standardized location on the caliper body, eliminating the need for inclination adjustments. The single exhaust port is positioned such that proper exhaustion can be achieved regardless of the caliper's orientation, saving time and simplifying the exhaustion procedure.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20240026941A1Brake caliper and vehicle having the same

Publication Date: 2024.01.25 BYD CO LTD

AI summary

A brake caliper and a vehicle having the same are provided. The brake caliper includes: a caliper body and an exhaust screw. A brake disc groove and a piston cylinder are constructed in the caliper body. A brake-fluid delivery oil line and an exhaust channel are constructed in a wall of the caliper body. The brake-fluid delivery oil line is in communication with the piston cylinder. The exhaust channel is in communication with an end of the brake-fluid delivery oil line in a length direction of the caliper body. An exhaust port is provided on a side of the caliper body in a thickness direction, and the exhaust port is in communication with the exhaust channel. An exhaust screw is mounted on the exhaust port on the side of the caliper body, to control opening or closing of the exhaust port.