Battery Lid Terminal Nut Insertion via Asymmetric Through-Holes
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Solution Overview
Problem
The existing storage battery designs for motorcycles face difficulties in inserting and securing nuts into terminal cavities, leading to trouble and potential nut falling during external leading wire connections, due to the orientation requirements and integral anchor formation with the terminal.
Innovation Solution
The design involves insert-molding a nut into the terminal cavity within the lid, where the anchor portion is projected at a location excluding the central portion of the terminal, allowing deformation of the terminal's bottom portion to securely fix the nut, and featuring multiple through-holes and screw holes for improved alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the anchor portion is integrally formed with the terminal at the central portion of the bottom, then the terminal section is securely anchored in the lid, but the nut cannot be properly fixed to the terminal cavity
Solution Approach 1:
The bottom of the terminal is divided into two functional zones: the central portion retains the anchor portion for securing the terminal section in the lid, while the peripheral portion is designed without the anchor to allow nut insertion and fixation. This segmentation resolves the contradiction by allocating different regions for different functions.
Solution Approach 2:
The nut is inserted into the terminal cavity before the terminal is inserted into the lid. This preliminary action allows the nut to be positioned and secured to the terminal bottom in advance, avoiding the problem of trying to fix the nut after the terminal is already anchored in the lid.
2Manufacturing precision
If multiple through-holes are formed in the terminal, then alignment and stability during nut insertion is improved, but the terminal structure becomes more complex
Solution Approach 1:
The through-holes are positioned asymmetrically on the terminal bottom, with specific locations optimized for alignment during nut insertion. This asymmetric arrangement provides precise alignment guidance while maintaining a relatively simple terminal structure, resolving the contradiction between precision and complexity.
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 method simplifies the nut insertion process, prevents falling, and facilitates easy separation for recycling by deforming the terminal's bottom portion to securely fix the nut, enhancing the reliability and recyclability of the storage battery.
Implementation Method 1
a bottom portion of the terminal is deformed by an injection molding pressure of the synthetic resin at the time of the insert molding, so that the nut is pressed and fixed to the cavity portion of the terminal
Implementation Method 2
a bottom portion of the terminal is deformed by an injection molding pressure
Implementation Method 3
a lid made of synthetic resin to close the container from above
Data Source
AI summary
An object of the invention is to provide a lid for storage battery comprising a terminal having a rectangular parallelepiped shape and a cavity portion, and a nut having a rectangular parallelepiped shape and being inserted into the cavity portion. The terminal has a first through-hole extending from an upper surface toward a lower surface of the terminal and a second through-hole extending from a front surface toward a rear plate portion of the terminal. The nut has a first screw hole extending from an upper surface toward a lower surface of the nut, and a second screw hole extending from a front surface toward a back surface of the nut, the first and second screw holes communicating with the first and second through-holes of the terminal, respectively. A direction in which the first screw hole extends does not intersect with a direction in which the second screw hole extends.