Switch Device Actuator Tilting Mechanism for Low-Profile Housing
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Solution Overview
Problem
Conventional switch devices require increased housing height due to stacked switch units and actuators, leading to assembly inefficiencies and limited operational flexibility, particularly in low-profile designs and sliding-type applications.
Innovation Solution
A switch device design where the drive portion of the operating member tilts the actuator adjacent to it, reducing housing height and allowing for stable operation, with a notch-like cutout for smooth tilting and a restoring spring for backlash-free assembly, enabling versatile operation types and enhanced assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If switch units and actuators are stacked below the operating member, then the switch device can be operated reliably, but the housing height increases
Solution Approach 1:
The patent transitions from a vertical stacking arrangement (switch units below actuator) to a lateral arrangement (switch units adjacent to actuator). The actuator is positioned beside the operating member rather than underneath it, and switch units are arranged side-by-side with the actuator. This dimensional reconfiguration reduces housing height while preserving the actuation mechanism's reliability.
2Ease of operation
If the actuator is interposed between the operating member and switch units, then the operating member can push the actuator downward, but the actuator becomes difficult to position during assembly
Solution Approach 1:
The actuator is pre-positioned in its final location beside the operating member during the housing assembly process, rather than requiring post-assembly adjustment. The lateral arrangement allows the actuator to be installed in a fixed position before the operating member is attached, eliminating the need for difficult post-assembly positioning and reducing the risk of displacement or detachment.
3Ease of operation
If the operating member pushes the actuator downward, then switch units can be actuated, but the operating method is extremely limited
Solution Approach 1:
The lateral arrangement of the actuator beside the operating member creates a universal interface that can accommodate multiple operating types. The actuator's side-mounted position allows it to be actuated by rotational movement, sliding motion, or pressing actions, making the switch device adaptable to various operating members including rotary knobs, sliding switches, and push buttons, rather than being limited to downward pushing only.
Data Source
Figure 1
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Figure 4A~4B
AI summary
A switch device includes a housing, which contains therein a circuit board provided with fixed contacts, a rubber sheet disposed on the circuit board and having protuberances, a tiltably-supported actuator, a rotatable knob, and a torsional coil spring serving as a restoring spring. The actuator is disposed adjacent to the rotatable knob. The rotatable knob is provided with a drive portion, which extends through a cutout in the actuator so as to be slidably engaged to engagement portions of the actuator. When the rotatable knob is rotated, the drive portion tilts the actuator so that one of ends of the actuator pushes against the corresponding protuberance disposed below the end.