Brake Disc Lock Spring Mechanism for Reliable Switch Actuation
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Solution Overview
Problem
Existing brake disc locks are structurally complex and require intricate mechanisms to activate the alarm device, making them difficult to manufacture and use.
Innovation Solution
A brake disc lock design featuring two spring means, where the actuating section is moved from a release position to a securing position using a second spring to compensate for relative movement, ensuring the pressure switch is actuated reliably without immediate alarm triggering, allowing for simpler construction and easier handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an AND coupling is used to activate the alarm device (requiring both brake disc presence and locking mechanism engagement), then the alarm activation is more reliable, but the device complexity increases due to resilient mounting and perpendicular actuation requirements
Solution Approach 1:
The patent combines the brake disc detection function and alarm activation function into a single pressure switch mechanism. The pressure switch is actuated by the brake disc itself when the locking mechanism is engaged, eliminating the need for separate detection and activation systems. This merging reduces structural complexity while maintaining reliable alarm activation through the integrated pressure-activated switch.
2Reliability
If the alarm device is activated immediately when the pressure switch is actuated, then the theft warning function is more responsive, but the ease of operation deteriorates because the authorized user cannot remove the lock without triggering the alarm
Solution Approach 1:
The patent implements a preliminary action by requiring the user to consciously activate the alarm device through a separate activation step after engaging the lock. The pressure switch only prepares the system for alarm activation, but the actual alarm is only triggered when the user intentionally activates it. This allows the authorized user to remove the lock without immediate alarm triggering, while still providing responsive theft warning when the alarm is actually activated.
3Device complexity
If a single spring means is used for the pressure switch actuation, then the device complexity is reduced, but the adaptability deteriorates because brake discs of different thicknesses cannot be accommodated
Solution Approach 1:
The patent employs two spring means with different characteristics to create a dynamic system that adapts to varying brake disc thicknesses. The first spring provides initial actuation force for thin brake discs, while the second spring engages for thicker brake discs to provide additional travel. This dynamic spring system maintains consistent pressure switch actuation across different brake disc thicknesses without requiring a complex adjustable mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design simplifies the structure and operation of the brake disc lock, allowing for reliable actuation of the pressure switch across varying brake disc thicknesses, preventing damage and enhancing user experience by automatic release of the lock.
Implementation Method 1
a pressure switch with a contact element which can be moved by the brake disc detection device against the spring force of a first spring means
Implementation Method 2
A second spring means is provided, via which the actuation section is prestressed into the release position
Data Source
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AI summary
Lock comprises a spring part (69) for pre-tensioning an actuating section (19) in a released position and a switching body (57) which is coupled with the fixing section via the spring part. The spring part and a further spring part (61) are matched so that a pressure switch is actuated against the spring force of the further spring part when the actuating section is moved into the closed position and when the disk brake is present in a holding gap (17). The remaining relative movement between the disk brake recognition unit and the actuating section is compensated for by the spring part (69). Preferred Features: Both spring units act in the same direction. The actuating section and the pressure switch pivot toward each other.