Connection Terminal Side Wall Overlap Guide
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Solution Overview
Problem
Existing connection terminals face issues with incorrect insertion of electrical conductors, leading to unreliable contact between the conductor and the current bar, particularly in terminals with open side walls, which compromises operational reliability.
Innovation Solution
The connection terminal design includes side walls that overlap the conductor connection space laterally, forming a guide for the conductor, and features pressure surfaces and counter-pressure surfaces to control the movement of the clamping leg, ensuring correct insertion and secure clamping within the actuating element, preventing incorrect insertion and enhancing operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connection terminal has open side walls, then the ease of manufacture is improved, but the reliability deteriorates due to incorrect insertion of conductors
Solution Approach 1:
The side walls are segmented into fixed outer portions and movable inner portions (guiding elements) that can move independently. This segmentation allows the side walls to provide structural support while enabling active guidance of the conductor during insertion, preventing incorrect insertion while maintaining manufacturing simplicity.
Solution Approach 2:
Guiding elements are introduced as intermediary components between the open side walls and the conductor. These guiding elements actively intervene in the conductor insertion process, providing lateral guidance and preventing incorrect insertion paths without requiring the entire side wall structure to be closed or complex.
2Ease of operation
If the conductor connection space is exposed, then the ease of operation is improved, but the manufacturing precision deteriorates due to incorrect conductor positioning
Solution Approach 1:
The guiding elements perform preliminary guidance action during conductor insertion, aligning the conductor laterally before it reaches the clamping position. This preliminary lateral positioning ensures that the conductor is correctly positioned before the clamping operation occurs, improving positioning precision without complicating the overall operation.
Solution Approach 2:
The guiding elements act as intermediary structures that mediate between the exposed conductor connection space and the conductor being inserted. They provide the necessary lateral guidance and positioning information to the conductor, ensuring precise positioning while maintaining the simplicity and accessibility of the open connection space design.
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 significantly reduces the risk of incorrect insertion and ensures reliable contact between the conductor and the current bar, thereby improving the operational reliability of the connection terminal by providing a controlled and secure clamping mechanism.
Implementation Method 1
a clamping spring arranged in the housing, which has a holding leg and a clamping leg has, by means of which the conductor to be connected can be clamped against the current bar
Implementation Method 2
a pressure surface is formed on each of the two side walls, by means of which when the clamping leg is transferred from the clamping position in the open position, a force can be applied by the actuating element to the clamping limb
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a connection terminal (100) for connecting an electrical conductor (200), comprising a housing (10), a conductor insertion opening (11), which is formed in the housing (10) and has the purpose of inserting the conductor (200) to be connected into the housing (10), a busbar (12) which is arranged in the housing (10), a clamping spring (13) which is arranged in the housing (10) and has a retaining limb (15) and a clamping limb (16), wherein the clamping limb (16) has a clamping edge (31) at a free end, by means of which clamping edge the conductor (200) to be connected can be clamped against the busbar (12), and an operating element (14) which is mounted in a displaceable manner in the housing (10) and by means of which the clamping limb (16) can be moved into a clamping position and into an open position, wherein the operating element (14) has a passage opening (18) through which at least one subsection of the busbar (12) is guided and through which the conductor (200) to be connected can be guided, wherein a conductor connection area is formed in the passage opening (18), clamping of the conductor (200) to be connected against the busbar (12) by means of the clamping limb (16) taking place in the passage opening (18) in said conductor connection area, wherein the passage opening (18) is delimited at least by a top wall (19) and by two side walls (20, 21) which are arranged perpendicularly to the top wall (19), wherein the two side walls (20, 21) laterally overlap the conductor connection area and wherein an opening (23, 24) is formed in each of the two side walls (20, 21), the clamping limb (16) being guided in said opening as it is moved into the clamping position and into the open position.