Spring-Force Terminal Connection Compact Leaf Spring Design
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Solution Overview
Problem
Conductor terminals with traditional leg spring designs require a large installation space due to the need for a support leg on an insulating material housing, making them bulky and inefficient in terms of space usage.
Innovation Solution
A spring-force terminal connection using a leaf spring clamping mechanism with a clamping cage, where the leaf spring is fastened to the cage with its second end section, allowing for a more compact design by eliminating the need for an insulating material housing and reducing overall size, and incorporating a pivotable actuation lever for efficient clamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a leg spring with support leg flat against insulating material housing is used, then tilt-proof position of clamping spring is achieved, but installation space becomes large
Solution Approach 1:
The support leg is extracted from the insulating material housing and repositioned to bear flat against the bus bar. This separation allows the clamping spring to achieve tilt-proof positioning through the bus bar contact alone, eliminating the need for additional housing space and enabling more compact terminal designs.
Solution Approach 2:
The positioning function is shifted from the horizontal plane (against housing) to the vertical plane (against bus bar). By changing the dimension of contact, the invention achieves stable positioning without requiring lateral space in the housing, thus reducing overall installation footprint.
2Reliability
If clamping spring bears flat against insulating material housing, then stable positioning is achieved, but device size increases
Solution Approach 1:
The positioning function is merged with the bus bar structure itself. The bus bar serves dual purposes: electrical conduction and mechanical support for tilt-proof positioning. This integration eliminates redundant structural elements and reduces overall device complexity and size.
Solution Approach 2:
The bus bar is given multi-functionality by serving both as the electrical conductor and as the positioning surface for the clamping spring. This universal use of the bus bar eliminates the need for separate positioning structures, thereby reducing device size while maintaining reliability.
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 compact design reduces the overall size of the terminal connection, allowing for smaller conductor terminals with improved assembly efficiency and reduced force expenditure during clamping, while maintaining secure conductor engagement.
Implementation Method 1
a clamping spring by which the conductor to be connected is clamped against the bus bar when in a clamped state
Implementation Method 2
a pivotably arranged actuation lever, the clamping spring being actuatable by a pivoting movement of the actuation lever
Data Source
AI summary
A spring-force terminal connection for connecting a conductor includes: a bus bar; a clamping spring by which the conductor to be connected is clamped against the bus bar when in a clamped state; a pivotably arranged actuation lever, the clamping spring being actuatable by a pivoting movement of the actuation lever; and a clamping cage, which forms a space for accommodating the conductor to be connected. The clamping spring includes a leaf spring and has a first end section forming a clamping region and a second end section opposite the first end section and forming a holding region. The clamping spring is fastened to the clamping cage by the second end section.