Switch Pusher Groove Grease Distribution
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Solution Overview
Problem
The existing switch structure requires grease application at two locations, increasing manufacturing costs and complexity.
Innovation Solution
A switch structure design where a pusher with V-shaped grooves allows grease to spread from one slide surface to another, reducing the number of application locations while maintaining smooth operation and click perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grease is applied to two separate locations (both slide surfaces of the pusher), then smooth movement of the pusher is ensured, but manufacturing cost and complexity increase
Solution Approach 1:
The pusher structure enables itself to distribute grease automatically through its own movement. The groove in the pusher acts as a self-contained grease distribution system that utilizes the natural relative motion between the pusher and lever/body to spread grease from one application location to all necessary slide surfaces without external intervention
Solution Approach 2:
The groove in the pusher serves as an intermediary structure that receives grease at one location and distributes it to multiple slide surfaces. This groove acts as a mediator between the single grease application point and the multiple contact surfaces requiring lubrication
2Reliability
If grease is applied to two separate locations, then adequate lubrication is achieved, but manufacturing efficiency decreases
Solution Approach 1:
The pusher with integrated groove performs self-lubrication by automatically distributing grease during its normal operational movement, eliminating the need for separate grease application operations at multiple locations and thereby improving manufacturing efficiency
3Reliability
If grease application is performed at two locations, then all slide surfaces are lubricated, but cost increases
Solution Approach 1:
The pusher structure with groove performs self-service lubrication by automatically distributing a single grease application to all required slide surfaces through its operational movement, reducing manufacturing cost by eliminating additional grease application operations
Solution Approach 2:
The groove structure merges the functions of multiple grease application locations into a single integrated system. Instead of applying grease separately to each slide surface, the groove combines them into one application point that distributes grease to all surfaces
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 solution reduces the number of grease application locations to one, lowering costs and maintaining performance by utilizing capillary action to distribute grease across all necessary surfaces, ensuring smooth movement and perceived clicks.
Implementation Method 1
a groove that draws grease from one of the at least two slide surfaces where the grease is applied to another one of the at least two slide surfaces
Data Source
AI summary
A switch structure includes a lever operable by a user, a body coupled to the lever, a support formed in the lever, a pusher supported by the support, a detent surface formed in the body to produce a click when the lever is operated, and a spring that pushes the pusher against the detent surface. The pusher includes two slide surfaces, which slide on the lever and the body, and a groove, which draws grease from one of the two slide surfaces where the grease is applied to another one of the two slide surfaces.