BOSA Device Snap-Fit Mounting for Adhesive-Free PCB Assembly
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Solution Overview
Problem
The existing BOSA device installation process is complicated due to the use of viscose connection, which requires a long time and is prone to alignment deflection.
Innovation Solution
A BOSA device assembling apparatus with a middle seat and snap-fit bosses and holes, along with protruding pins and positioning holes, allows for rapid and accurate fixation on a PCB board without viscose, using snap-fit mechanisms to secure the BOSA device on the middle seat and PCB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If viscose connection mode is used to connect BOSA to PCB, then connection is achieved, but the process becomes complicated and time-consuming
Solution Approach 1:
The patent extracts and eliminates the viscose connection process entirely, replacing it with a direct mechanical snap-fit structure. The BOSA device includes a square pipe body with snap-fit structures that directly engage with corresponding structures on the PCB, removing the intermediate viscose layer and its associated complexity.
Solution Approach 2:
The patent replaces the chemical bonding mechanism ( viscose) with a pure mechanical connection system. The snap-fit structures use elastic deformation and mechanical interlocking to achieve secure connection, eliminating the need for chemical adhesives and curing processes.
2Reliability
If viscose connection mode is used to connect BOSA to PCB, then connection is achieved, but alignment deflection is prone to occur
Solution Approach 1:
The patent incorporates preliminary positioning structures (positioning holes and positioning protrusions) that pre-establish the correct alignment between BOSA and PCB before the snap-fit connection is made. This preliminary action ensures accurate positioning is achieved before final securing.
Solution Approach 2:
The connection system is segmented into distinct functional elements: positioning structures for alignment, snap-fit structures for securing, and limiting arms for constraint. This segmentation allows each element to perform its specific function optimally, with positioning ensuring precision and snap-fit ensuring reliability.
3Reliability
If viscose connection mode is used to connect BOSA to PCB, then connection is achieved, but the process requires long time for curing
Solution Approach 1:
The patent replaces the time-consuming chemical curing process with an immediate mechanical snap-fit connection. The elastic deformation of the snap-fit structures provides instant securing without requiring any waiting time for chemical reactions to complete.
Solution Approach 2:
The patent skips entirely through the viscose application, spreading, and curing steps by using a direct mechanical connection system. The snap-fit structures can be engaged and secured in a single rapid operation, eliminating multiple process steps and their associated time requirements.
Data Source
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AI summary
A BOSA device assembling apparatus and a mounting method thereof. The assembling apparatus comprises: a BOSA device (1) including a base and a middle seat (2) including a bottom plate (23), a first limiting arm (21) provided with a first snap-fit hole (211), and a second limiting arm (22) provided with a second snap-fit hole (221), the base comprising a first side surface (11) provided with a first boss (13) and a second side surface (12) provided with a second boss (14), which are oppositely set. The first limiting arm (21) and the second limiting arm (22) being both set on the bottom plate (23) and oppositely set, the bottom plate (23), the first limiting arm (21) and the second limiting arm (22) forming a mounting space. The bottom plate (23) is further provided with at least one protrusion (231) which is set on a side facing away from the first limiting arm (21) and is used to be fixed in a positioning hole (31) of a PCB board. The base is set in the mounting space, and the first boss (13) is snap-fitted in the first snap-fit hole (211), and the second boss (14) is snap-fitted in the second snap-fit hole (221), so as to fix the BOSA device (1) on the middle seat (2).