Position Locator SMT Shrapnel Positioning
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Solution Overview
Problem
Existing position locators suffer from inconsistent positioning of positive and cathode shrapnel, leading to potential contact breaks and poor installation stability due to manual welding and lack of anti-detachable structure.
Innovation Solution
A new type of position locator featuring solder pads with reference surfaces and large contact areas for consistent positioning, combined with a flexible pretensioning mechanism and SMT process for automated installation, ensuring stable and automatic connection of the battery and buzzer components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual welding is used to fix shrapnel to the main board, then the installation process is simple, but the positioning consistency is poor and contact reliability is low
Solution Approach 1:
The patent replaces the manual welding mechanical process with an automated SMT (Surface Mount Technology) system. The shrapnel components are designed with standardized solder pads that can be automatically positioned and soldered by SMT equipment, eliminating manual welding operations. This substitution achieves precise positioning consistency through automated pick-and-place machines while maintaining ease of manufacture through standardization.
Solution Approach 2:
The patent changes the physical parameters of the shrapnel by adding solder pads with specific dimensions (area of at least 8mm²) and standardized reference surfaces. These parameter changes enable the components to be compatible with automated SMT processes, improving positioning consistency from manual to automated precision levels while facilitating easier manufacturing through standardization.
2Reliability
If elastic shrapnel is used to pre-tighten the battery, then the battery is held in place, but the shrapnel can detach during use causing contact failure
Solution Approach 1:
The patent merges the electrical contact function and the mechanical retention function into a single integrated shrapnel component. The shrapnel includes both the elastic contact portion for electrical connection and the retention portion for securing the battery, eliminating the need for separate anti-detachable structures while maintaining contact stability and preventing detachment.
Solution Approach 2:
The shrapnel component is designed with multi-functionality, serving simultaneously as an electrical contact element, a mechanical spring for pre-tightening, and a retention mechanism. This universal design provides both battery holding and anti-detachment functions within a single component, improving reliability without increasing device complexity.
3Manufacturing precision
If pins are used for positioning through holes in the main board, then the shrapnel is fixed, but position deviation occurs leading to inconsistent shrapnel height
Solution Approach 1:
The patent replaces the mechanical pin-through-hole positioning system with an SMT-based positioning system. The shrapnel includes standardized solder pads with reference surfaces that are positioned using automated SMT pick-and-place machines, eliminating manual pin insertion and achieving consistent height positioning through automated precision placement.
Solution Approach 2:
The patent introduces solder pads as an intermediary element between the shrapnel and the main board. These solder pads serve as both the positioning reference and the electrical connection interface, mediating the connection process and enabling precise positioning through standardized SMT processes while maintaining ease of operation through automated assembly.
Data Source
AI summary
A multifunctional position locator with a body, a hardware piece attached to the body, a base case removably attached to the hardware with at least one power contact and an NFC sensor, a position locator removably attached to the base case and having at least one position locator power contact, the position locator has at least one light-transmitting through-hole provided with a light source inside of the position locator and light from the light source is projected outward through at least one of the light-transmitting through-holes, the hardware has a hardware opening and the position of the light-transmitting through-hole is matched with hardware opening, the body has a body opening that is at least the same size or larger than the hardware light-transmitting through-hole and the body opening is substantially aligned with the hardware opening and the light-transmitting channel when the hardware is attached to the body.