Vehicle Fob Key Button Support Structure for Operating Force
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Solution Overview
Problem
Traditional fob keys for vehicles face limitations in increasing operating force on buttons and eliminating noise when pressed, as the existing structural adjustments are insufficient to meet the desired force requirements and fully prevent noise.
Innovation Solution
A button-supporting structure is introduced, comprising a base plate with aslant elastic support pieces and a contact plate, which elastically supports buttons and transfers operating force to touch switches, allowing for increased force and reduced noise by supporting buttons away from touch switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the operating force on the touch switch is increased and the hardness of the keypad is increased, then the operating force on the button is increased, but the structural limitation prevents further increase and noise cannot be avoided
Solution Approach 1:
A button-supporting structure is introduced as an intermediary component between the button and the touch switch. This structure includes a button supporting the rod portion of the button, positioned between the button and the touch switch. The button-supporting structure transfers the operating force from the button to the touch switch while providing structural support, thereby overcoming the limitations of directly increasing touch switch operating force or keypad hardness.
2Force
If traditional adjustment methods are used, then some operating force can be achieved, but the desired operating force of 13 N cannot be satisfied
Solution Approach 1:
The button-supporting structure enables parameter changes in the force transmission system. By introducing this intermediate structure with specific mechanical properties, the system can achieve the target operating force of 13 N that cannot be reached through traditional adjustment of touch switch operating force (3 N to 5 N) or keypad hardness alone.
3Object-generated harmful factors
If the button moves without proper support, then the structure is simple, but noise is produced when the button moves
Solution Approach 1:
The button-supporting structure serves as a mediator that supports the button during its movement. This structure prevents direct contact and potential noise generation between the button and surrounding components, thereby eliminating noise without requiring complex additional damping or isolation systems.
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 solution effectively increases the operating force on buttons to meet the desired 13 N requirement while minimizing noise, ensuring reliable and quiet operation.
Implementation Method 1
a button-supporting structure elastically supporting buttons in a direction far away from touch switches
Data Source
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AI summary
The present invention relates to a fob key for a vehicle. The fob key for a vehicle includes a housing accommodating a printed circuit board (50) mounted with touch switches (30) and electrical parts, buttons arranged on the housing and able to move toward touch switches, and a button-supporting structure (300) elastically supporting buttons (200) in a direction far away from touch switches.