Cam Push-Rod Switch Layout With Inline Spring Damper
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Solution Overview
Problem
Existing electrical operating devices lack a compact configuration.
Innovation Solution
An electrical operating device comprising a cam shaft, a swingable cam, a push rod displaced by the cam, a coil spring opposing the push direction, and a damper assembly located on the coil spring's center line, with the damper assembly sharing an accommodating chamber with the coil spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate accommodating chambers are used for coil spring and damper assembly, then each component can be independently maintained, but the overall device size increases
Solution Approach 1:
The patent combines the coil spring and damper assembly into a single accommodating chamber, eliminating the need for separate chambers. This merging reduces the overall device volume while maintaining both components' functionality, directly resolving the contradiction between compact size and independent maintenance capability
Solution Approach 2:
The single accommodating chamber serves multiple functions: housing both the coil spring and damper assembly, providing maintenance access for both components, and maintaining structural integrity. This multi-functional design allows one chamber to replace what would traditionally require two separate chambers
2Reliability
If multiple separate components are used, then each component can be optimized independently, but the device complexity increases
Solution Approach 1:
The patent merges the coil spring and damper assembly into a single accommodating chamber, reducing the total component count from what would traditionally be required (separate chambers, separate mounting structures) to a more integrated configuration. This reduces device complexity while maintaining the ability to optimize each component's performance
3Volume of moving object
If compact design is achieved through integration, then device size is reduced, but assembly difficulty increases
Solution Approach 1:
The patent segments the integrated chamber design into modular components that can be assembled in a standardized sequence. The accommodating chamber is designed with features that allow the coil spring and damper assembly to be installed in discrete steps, making the compact integrated design easier to manufacture and assemble
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 device achieves a compact design, improved assemblability, and enhanced durability by integrating the damper assembly with the coil spring, reducing component count and simplifying the structure.
Implementation Method 1
a coil spring that urges the push rod in a direction opposite to the push direction
Implementation Method 2
a damper assembly including a movable portion that is displaced together with the push rod
Data Source
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AI summary
An electrical operating device for outputting an electrical signal corresponding to an operation performed with an operating tool, the electrical operating device including: a cam shaft; a cam to which the operating tool is mounted and that is swingable about the cam shaft; a push rod that is displaced in a push direction as a result of being pushed by the cam; a coil spring that urges the push rod in a direction opposite to the push direction; and a damper assembly including a movable portion that is displaced together with the push rod, the damper assembly being located on a center line of the coil spring, the center line extending in an urging direction of the coil spring.