Household Appliance Control Lever Assembly for Play-Free Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional manual control devices for household appliances suffer from imprecision and fragility due to clearance between the control lever and control axis, leading to perceived imprecision and potential positioning faults.
Innovation Solution
A manual control device with a movable part mounted on a support part, connected via a transmission element that eliminates play between the moving part and control axis, ensuring precise movement transmission and stable positioning on a support plate, with locking elements to secure the device to the plate, preventing external disassembly and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the control lever is directly connected to the control axis, then the structure is simple, but play and positioning defects occur between the control lever and control axis
Solution Approach 1:
A transmission element is introduced as an intermediary component between the control lever and control axis. This transmission element eliminates play while maintaining structural simplicity, resolving the contradiction between device complexity and positioning precision.
2Stability of the object's composition
If the control axis is supported by an independent support, then the control axis is stable, but positioning defects occur between the control lever and control strip
Solution Approach 1:
The support for the control axis and the positioning mechanism for the control strip are merged into a single integrated structure. This eliminates positioning defects between the control lever and control strip while maintaining the stability of the control axis.
3Ease of operation
If the control lever allows free movement, then ease of operation is improved, but play between components increases
Solution Approach 1:
The transmission element acts as a mediator that allows the control lever to move freely for ease of operation while simultaneously eliminating play between components, thus maintaining control precision and reliability.
Data Source
Figure 1~2
Figure 3A~3C
Figure 4
AI summary
A manual control device for a household appliance, the control device (100) being associated with a control shaft, a movement action on the control device (100) causes a movement of the control shaft. The control device (100) comprises: - a moving part (1) and a support part (2) for the moving part (1), the moving part being movable relative to the support part, and the moving part and the support part having connecting means (12, 23) for connecting the moving part (1) and the support part (2) to each other; and - a transmission element (30) mounted between the moving part (1) and the associated control shaft, the transmission element (30) transmitting a movement of the moving part (1) relative to the support part (2) to the control shaft.