Plug-in Connector with Curved Fixation Bodies for Insertion and Retention
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Solution Overview
Problem
Connectors with pure herringbone slats lose holding power over time when stored for extended periods before assembly, and complex fixation bodies either shear off or collide, hindering insertion and removal.
Innovation Solution
The connector features L-shaped first fixation bodies with a convex curvature at the free end, which allows easy insertion and compensates for manufacturing tolerances, and a flat surface with an oblique inclination to enhance pulling resistance, along with additional toothing and beveled second fixation bodies for improved holding force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pure herringbone slats are used as fixing elements, then the connector can be easily inserted into the hollow profile, but the holding force is lost over time during storage
Solution Approach 1:
The fixing element features a convex curvature in the transition area between stem and beam, which facilitates easy insertion by allowing the element to smoothly engage with the hollow profile. The convexly curved outer surface of the beam maintains contact pressure over time, ensuring long-term holding force without losing effectiveness during storage periods.
2Reliability
If complex T-shaped fixing elements are used, then holding force is improved, but the edges of the hollow profile can shear off the fixing element during insertion
Solution Approach 1:
The convex curvature at the free stem end and the smoothly transitioning convexly curved outer surface of the beam eliminate sharp edges that could cause shearing. The curved geometry allows the fixing element to be inserted without the hollow profile edges catching on sharp corners, while still providing sufficient holding force through the curved contact surfaces.
3Reliability
If complex T-shaped fixing elements are used, then holding force is improved, but the beam ends of adjacent fixing elements collide and hinder positioning and spreading
Solution Approach 1:
The convexly curved outer surface of the beam provides a rounded profile that prevents collision between adjacent fixing elements. The curvature allows the beams to pass alongside each other during insertion without interfering with positioning or spreading, eliminating the collision problem associated with straight-edged T-shaped elements.
4Ease of manufacture
If the beam outer surface is made flat, then manufacturing is simplified, but friction during insertion is high and insertion is difficult
Solution Approach 1:
The convexly curved outer surface of the beam is designed with a large radius of curvature that is easier to manufacture than sharp edges while still providing the friction-reducing benefits of a curved surface. The gradual curvature facilitates smooth insertion by reducing contact friction, while remaining compatible with standard manufacturing processes.
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
Ensures easy insertion and long-term secure retention of the connector within the hollow profile, even with varying manufacturing tolerances, by minimizing friction during insertion and maximizing resistance during removal.
Implementation Method 1
minimizing friction during insertion and maximizing resistance during removal
Implementation Method 2
the elastic lamellae, which are angled in the opposite direction to the insertion, conform to the base body. When attempting to withdraw the connector from the hollow profile, the lamellae spread open and counteract any relative movement between the connector and the hollow profile
Data Source
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AI summary
The invention relates to a connector (10) with at least one connector arm (12) integrally formed at a node region (14) and extending accordingly in the longitudinal direction of the arm between an integrally formed arm end and a free arm end, comprising a base body (100) from which several first fixing bodies (200) project laterally outwards, wherein each first fixing body (200) comprises: - a stem (202) integrally formed on one side of the base body (100), which extends in a stem longitudinal direction predominantly perpendicular to the arm longitudinal direction between an integrally formed stem end and a free stem end, and - a beam (204) integrally formed at the free stem end, which extends in a beam longitudinal direction predominantly in the arm longitudinal direction and has a beam outer surface facing away from the base body (100) and a beam inner surface facing the base body (100).The invention is characterized in that the stem (202) has a convex curvature (206) in the area of its free stem end facing the free arm end, which transitions continuously into the flatter convexly curved outer surface of the beam.