Nano SIM Card Socket With Two-Row Soldering Terminals
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Solution Overview
Problem
Conventional SIM card sockets face challenges in identifying the arrangement of soldering parts, especially in small-sized sockets for nano SIM cards, leading to electrical failures due to foreign substances and difficulty in inserting and withdrawing the nano SIM card with proper contact strength.
Innovation Solution
The socket design features first to sixth connection parts arranged in a specific transverse and parallel configuration, with through-openings for contact and soldering parts exposed externally, allowing easy identification and preventing foreign substance introduction, and cantilever-shaped contact parts angled for optimal insertion and contact force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the socket size is reduced to accommodate nano SIM card, then the compactness is improved, but the spacing between soldering parts becomes insufficient leading to difficulty in identification and foreign substance introduction
Solution Approach 1:
The soldering parts are arranged in two rows instead of one row, changing the spatial dimension of the arrangement. This allows the soldering parts to be distributed more effectively within the reduced socket footprint, maintaining adequate spacing between adjacent soldering parts while accommodating the compact nano SIM card dimensions.
Solution Approach 2:
The socket is divided into distinct regions with through-openings for contact parts and separate through-openings for soldering parts. This segmentation allows independent optimization of contact area and soldering area, ensuring that soldering parts have sufficient spacing for identification and assembly while maintaining overall socket compactness.
2Device complexity
If the soldering parts are arranged in one row, then the device complexity is reduced, but the manufacturing precision becomes difficult to control due to dense spacing
Solution Approach 1:
The soldering parts are arranged in two rows rather than one row, transitioning from a linear arrangement to a two-dimensional grid arrangement. This increases the effective spacing between adjacent soldering parts while maintaining a compact overall footprint, making it easier to control manufacturing precision and avoid foreign substance introduction.
3Strength
If the cantilever length is increased to provide sufficient contact force, then the contact strength is improved, but the socket size increases making nano SIM card insertion difficult
Solution Approach 1:
The contact parts are positioned at optimized locations within the socket, with their lengths and angles specifically tailored for each position. This local optimization ensures that each contact part provides sufficient contact force with the nano SIM card connection parts while maintaining an overall compact socket design that accommodates the small SIM card dimensions.
Solution Approach 2:
The contact parts are designed as cantilevers with elastic properties, allowing them to dynamically adjust and apply contact force to the SIM card connection parts. This elastic mechanism provides sufficient contact strength without requiring excessive cantilever length, maintaining socket compactness.
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 facilitates easy identification of soldering parts, prevents electrical failures, and ensures smooth insertion and withdrawal of the nano SIM card with proper contact strength, even in small-sized sockets.
Implementation Method 1
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Implementation Method 2
a heart cam 311
Implementation Method 3
a slider 310 having a heart cam 311
Implementation Method 4
The contact parts are formed in a cantilever shape which is extended toward the rear side of the socket. The contact parts of the terminals are exposed to the outside through through-openings for use in installation of the terminals on the housing so that they are brought into close contact with the connection parts of the SIM card by the elasticity of the cantilevers.
Data Source
AI summary
The present invention relate to a socket for a nano SIM card first to third connection parts arranged in a transverse direction, and fourth to sixth connection parts arranged in parallel with the first to third connection parts. The socket comprises: first to sixth terminals each comprising a contact part configured to be brought into close contact with an associated one of the connection parts of the nano SIM card and a soldering part configured to be soldered to a print circuit board; a housing comprising through-openings for first to sixth contact parts, which are formed at positions corresponding to the positions of the respective connection parts of the nano SIM card when the nano SIM card is inserted into the socket; and a cover coupled to the housing to define a space between the housing and the cover so that the SIM card is inserted into the space.