Moderation Feel Mechanism With Spring Guide for Uniform Click Sound
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Solution Overview
Problem
Existing moderation feeling adding apparatuses face challenges in assembly due to a small holding hole diameter and may result in insufficient biasing, leading to inadequate striking sounds.
Innovation Solution
The proposed moderation feeling adding apparatus includes an operation section, a spring, a contact section, a holding section, a wall portion, and a limiting section, where the holding section regulates the spring's position, and the clearance between the contact section and the wall portion is maintained equal on both sides, preventing spring twisting and ensuring uniform striking sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the diameter of the holding hole is reduced to support the spring and prevent lateral shifting, then the spring stability is improved, but the assembly difficulty increases
Solution Approach 1:
A guide section is introduced as an intermediary structure between the holding hole and the spring. The guide section has a guide hole with a diameter larger than the spring's outer diameter, allowing easy insertion of the spring while the guide walls constrain lateral movement. This mediator structure resolves the contradiction by providing both ease of assembly (larger opening) and spring stability (constraining walls).
2Ease of manufacture
If the diameter dimension of the holding hole is set larger to ease assembly, then the assembly ease is improved, but the spring may twist in an unintended direction resulting in insufficient biasing
Solution Approach 1:
The guide section acts as a mediator that allows the spring to be inserted easily through its larger guide hole diameter, while the guide walls simultaneously prevent unintended twisting by constraining the spring's movement to the intended direction. This ensures both assembly ease and biasing reliability are achieved.
Solution Approach 2:
The guide section extends in the axial direction, creating a three-dimensional structure that constrains the spring not only radially (preventing twisting) but also provides a controlled path for insertion. This dimensional approach allows the spring to move freely in the insertion direction while being constrained in rotational and lateral directions.
3Object-generated harmful factors
If the clearance between the contact section and wall portion is reduced to generate louder striking sound, then the sound intensity is improved, but the movable range of the contact section is reduced
Solution Approach 1:
The internal surface of the holding hole is segmented into functionally distinct sections: a guide section with a larger guide hole for insertion and movement, and a holding section with a smaller diameter than the spring's outer diameter to prevent lateral shifting. This segmentation allows each section to optimize for its specific function without compromising the other.
Solution Approach 2:
Different sections of the holding hole have different local qualities: the guide section has a larger diameter and smoother surface to facilitate movement and insertion, while the holding section has a smaller diameter to provide lateral constraint. This local differentiation resolves the contradiction by providing the right clearance characteristics in the right locations.
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
This design facilitates easy assembly, suppresses spring twisting, and ensures uniform and loud striking sounds, thereby providing a favorable moderation feeling.
Implementation Method 1
a spring (42); a contact section (43) attached to the spring (42)... moves by a biasing force of the spring (42)... generates a sound which becomes a moderation feeling by a collision between the wall portion (47a) and the contact section (43)
Data Source
AI summary
An apparatus that adds a favorable moderation feeling is provided. Base section 17 operates to one and other sides in a direction. Contact section 43 attached to spring 42 can be in contact with base section 17. Holding section 48 holds spring 42. Wall portion 47a faces contact section 43 in the direction, and generates a sound by a collision between wall portion 47a and contact section 43 moved by a biasing force of spring 42 as a contact state between contact section 43 and base section 17 changes due to an operation of base section 17. A limiting section limits a movable range of contact section 43 along the direction. Holding section 48 regulates a position of spring 42 in the direction. Clearance CL between contact section 43 and wall portion 47a is substantially equal between the one and other sides in the direction.