Vehicle Switch Rocker Structure for Zero-Drift Positioning
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Solution Overview
Problem
Existing vehicle switches face issues with zero drift and shaking due to dimensional deviations during manufacturing, which affects product accuracy and texture, leading to higher production costs for high-end products and compromised quality for low-end products.
Innovation Solution
A vehicle switch design incorporating a pressing rocking bar, first and second push rods, elastic members, and limiting bodies, with asymmetric torque distribution and a moving gap to ensure stable positioning and reduce tolerance chains, thereby maintaining position accuracy and preventing shaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If strict dimensional control is implemented to ensure switch position accuracy and prevent shaking, then product texture and reliability are improved, but production cost increases significantly
Solution Approach 1:
The patent applies asymmetry by designing the first and second limiting bodies with different structures. The first limiting body has a first limiting surface that forms a moving gap with the first push rod, while the second limiting body has a second limiting surface that forms a fixed connection with the second push rod. This asymmetric design allows one side to accommodate dimensional deviations through the moving gap while the other side provides stable positioning, thereby reducing the need for strict dimensional control across all components and lowering production costs while maintaining switch position accuracy.
Solution Approach 2:
The patent changes the parameter of connection rigidity by designing different connection modes between the limiting bodies and push rods. The first connection allows movement (changing rigidity from fixed to movable) to accommodate dimensional deviations, while the second connection remains fixed for stable positioning. This parameter change enables the system to tolerate dimensional variations without affecting overall position accuracy, reducing manufacturing precision requirements and production costs.
2Stability of the object's composition
If asymmetric torque design is implemented with a moving gap to accommodate dimensional deviations, then switch stability is improved, but device complexity increases
Solution Approach 1:
The patent segments the limiting mechanism into two distinct parts: the first limiting body with a moving gap connection and the second limiting body with a fixed connection. This segmentation allows each part to perform its specific function independently - the first limiting body accommodates dimensional deviations while the second provides stable positioning. By dividing the system into functional segments, the patent achieves switch stability without requiring a completely complex redesigned system, as each segment remains relatively simple in structure.
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 achieves stable switch positioning, reduces zero drift, and simplifies dimensional control, ensuring accurate and stable switch operation while minimizing production costs.
Implementation Method 1
a first elastic member fixedly arranged and connected to a bottom of the first push rod, a second elastic member fixedly arranged and connected to a bottom of the second push rod, where prepressures on the second elastic member and the first elastic member enable torque of the second push rod acting on a second end of the pressing rocking bar to be greater than torque of the first push rod acting on a first end of the pressing rocking bar
Data Source
AI summary
The invention relates to the field of switches, and particularly provides a switch for a vehicle and a vehicle. The invention aims to solve the problems of switch zero drift and shaking caused by the existence of a dimensional deviation of a switch of an existing vehicle. To this end, the switch according to the invention comprises a pressing rocking bar, a first push rod, a second push rod, a first elastic member, a second elastic member, a first limiting body, a second limiting body, and a housing, wherein the pressing rocking bar is pivotally connected to the housing; the first push rod and the second push rod respectively run through the first limiting body and the second limiting body and abut against bottoms of a first end and a second end of the pressing rocking bar, and the second push rod abuts against the second limiting body; and the first elastic member and the second elastic member are fixedly arranged and respectively connected to bottoms of the first push rod and the second push rod, torque of the second push rod acting on the second end is greater than torque of the first push rod acting on the first end, and a moving gap is reserved between the first limiting body and the first push rod in a pressing direction of the first push rod. Switch shaking is prevented and switch position accuracy is ensured.