Butterfly flap reduction gear
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Solution Overview
Problem
Existing regulating flap reduction gears for gas or liquid volume flow regulation in HVAC, fire protection, and smoke protection systems are complex in construction due to multiple individual parts requiring assembly and disassembly, lacking stability and efficient rotation stops.
Innovation Solution
Designing the spacers as 90° bent tabs on one bearing plate with lateral projections that integrate with the second bearing plate, eliminating play and requiring fewer parts, with welding for stability and forming rotation stops without separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple individual parts are used for spacers and bearing plates, then assembly and disassembly can be performed, but the construction becomes complex and stability decreases
Solution Approach 1:
The spacer and bearing plate are merged into a single integrated component. The bearing plate contains integrally formed spacer elements that extend between the housing walls, eliminating the need for separate spacer parts. This reduces the total number of components while maintaining assembly capability and structural stability.
2Reliability
If separate components are used for rotation stops, then the gear part can be stopped at end positions, but the construction complexity increases
Solution Approach 1:
The rotation stop function is integrated into the bearing plate structure. Protrusions on the bearing plate engage with corresponding features on the gear part to provide rotation stops at predetermined end positions, eliminating the need for separate stop components while ensuring reliable positioning.
3Stability of the object's composition
If traditional spacers are used between bearing plates, then the bearing plates can be kept at a distance, but the construction requires more parts and processing steps
Solution Approach 1:
The spacer function is integrated into the bearing plate design. Spacer elements are formed as integral parts of the bearing plate structure, extending between the housing walls to maintain the required distance between bearing plates. This eliminates separate spacer components and reduces assembly processing steps.
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
Simplifies the construction and enhances stability, allowing precise adjustment and high torque transmission with reduced assembly complexity and precise rotation stops for regulating flaps.
Implementation Method 1
the plurality of spacers are designed as tabs of one, first bearing plate, which are bent by 90° from the plane of the first bearing plate
Implementation Method 2
the tabs are inserted with their free tab ends into plug-in openings of the other second bearing plate without play until their at least one lateral projection rests against the second bearing plate
Implementation Method 3
The free tab ends that are inserted into the second bearing plate and/or the at least one lateral projection that rests against the second bearing plate is/are integrally connected to the second bearing plate, in particular by (laser) welding
Data Source
AI summary
A regulating flap reduction gear for an electrically driven regulating flap for regulating a gas or liquid volume flow includes two parallel bearing plates between which gear parts are rotatably arranged. A plurality of spacers keep the two bearing plates at a distance from one another. The plurality of spacers are designed as tabs of one, first bearing plate, which are bent by 90° from the plane of the first bearing plate and have at least one lateral projection. The tabs are inserted with their free tab ends into plug-in openings of the other second bearing plate until their at least one lateral projection rests against the second bearing plate.