Push Switch Anchor Member Prevents Case Detachment
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Solution Overview
Problem
In downsized electronic equipment, push switches face structural strength limitations due to increased pressing forces, often resulting in case detachment from conductive members.
Innovation Solution
The push switch design incorporates an anchor member protruding from the conductive member in a direction not parallel to the operating member's movement, embedded into the case wall, providing enhanced structural integrity and preventing case detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the switch is downsized to meet equipment size requirements, then the overall dimensions are reduced, but the structural strength decreases making the case prone to detachment
Solution Approach 1:
The conductive member is divided into multiple portions: a first portion embedded in the case wall, a second portion in the recess as fixed electrode, and an anchor member protruding from the first portion. This segmentation allows each part to serve specific functions while distributing mechanical stress, preventing case detachment even in downsized switches
Solution Approach 2:
The anchor member protrudes from the conductive member in a direction not parallel to the operating member's movement (perpendicular dimension), creating a multi-dimensional anchoring structure. This vertical anchoring prevents horizontal detachment forces from compromising the case-conductive member connection, maintaining strength in compact designs
2Reliability
If the pressing force is increased to ensure reliable switch activation, then the operating reliability improves, but the case may detach from the conductive member due to exceeding structural strength
Solution Approach 1:
The anchor member is pre-configured to counteract the detaching component force before it can cause damage. By protruding from the conductive member and embedding into the case wall in advance, it creates preliminary resistance against the horizontal component force generated during pressing operations, preventing case detachment even under high pressing forces
Solution Approach 2:
The anchor member extends in a perpendicular dimension relative to the pressing direction, converting the one-dimensional pressing force into a multi-dimensional stress distribution. This geometric transformation allows the structure to withstand higher pressing forces without case detachment, ensuring operational reliability
Data Source
AI summary
There is provided a push switch including an insulating case, a conductive member, a movable electrode and an operating member. The insulating case has a wall portion defining a recess. The conductive member has a first portion embedded into the wall portion and a second portion disposed in the recess as a fixed electrode. The movable electrode is disposed in the recess and is displaced between a first position and a second position. The operating member is moved to displace the movable electrode from the second position to the first position. An anchor member protrudes from the conductive member in a direction not parallel to the direction in which the operating member is moved, and embedded into the wall portion.