Vehicle Key Module with Selective Locking Mechanism
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Solution Overview
Problem
The production of button modules for vehicles with movable function keys and non-movable dummy keys is costly due to the need for various combinations and arrangements, making it difficult to handle and label keys, especially with a large number of keys, as existing methods require differentiation between different variants.
Innovation Solution
A method where all keys are initially locked to a key carrier and only those assigned a function are unlocked, allowing for the same key carrier to be used across different variants, with locking elements like flexible latch legs ensuring secure and easy unlocking using a holder element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different variants of key modules are produced with different combinations and arrangements of function keys and dummy keys, then the key modules can be customized for different vehicle functions, but the production outlay increases significantly
Solution Approach 1:
The patent implements a universal key carrier design that can accommodate different combinations of function keys and dummy keys through a standardized interface system. The key carrier features uniform key holes and a common locking mechanism that works with various key configurations, allowing the same base structure to serve multiple variant requirements without requiring separate tooling or production lines for each variant type.
Solution Approach 2:
The key module is segmented into modular components: a standardized key carrier, interchangeable keys with uniform mounting interfaces, and a common locking mechanism. This segmentation allows different combinations of keys to be assembled on the same carrier, enabling variant customization through simple component reconfiguration rather than producing entirely different modules for each variant.
2Adaptability or versatility
If a large number of keys are used in the key module, then more functions can be provided, but handling and labeling using a laser becomes problematic
Solution Approach 1:
The patent implements preliminary positioning features on the keys and key carrier that ensure correct orientation and placement before the labeling process. The keys have predefined mounting positions with alignment features that automatically orient them correctly on the carrier, eliminating the need for manual positioning and orientation adjustments during laser labeling, thereby simplifying handling even when numerous keys are present.
3Adaptability or versatility
If keys are made movable to allow function assignment, then flexibility in configuring key functions is improved, but the locking stability and prevention of accidental movement deteriorates
Solution Approach 1:
The patent implements a dynamic locking system where keys can transition between locked and unlocked states. The locking mechanism features a releaseable latch that secures keys in position during normal operation, preventing accidental movement, while allowing intentional unlocking for function reassignment. This dynamic capability provides both stability during use and flexibility for reconfiguration when needed.
Solution Approach 2:
The patent introduces a holder element as an intermediary component that mediates between the key and the key carrier. This holder element features a interface that engages with both the key mounting hole and the carrier structure, providing stable mechanical coupling when locked while allowing controlled release when unlocking is required, thus balancing stability and flexibility requirements.
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
This approach reduces production costs and effort by allowing the same key carrier to be used for all variants, simplifying key labeling and handling, and enabling easy conversion of dummy keys to function keys and vice versa, while ensuring stable and non-slip locking.
Implementation Method 1
at least one locking element for locking the key to the key carrier, with at least one flexible latch leg
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The invention relates to a method for producing a key module (1) for a vehicle, wherein the key module (1) comprises movable function keys, which are linked to a respective function in the vehicle, and immovable dummy keys, which have no function. A key carrier (2) having keys (5) attached thereto is provided, wherein all keys (5) on the key carrier (2) are releasably locked and thus immovable. A predetermined number of keys (5) is selected, and a respective function is assigned to the selected keys (5). Only those keys (5) that were assigned a function are unlocked, such that the unlocked keys (5) form function keys and the locked keys (5) form dummy keys. The invention also relates to a key module (1) for a vehicle, comprising a key carrier (2) and at least one key (5) held on the key carrier (2), wherein a locking element (9) for locking the key (5) is provided, which can be moved between a locked position, in which the key (5) is locked and serves as an immovable dummy key, and an unlocked position, in which the key (5) is unlocked and serves as a movable function key.