Pressure Detection Device Overload Protection Buffering
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Solution Overview
Problem
Pressure detection devices in polishing apparatuses are prone to excessive deformation and reduced lifespan due to overloaded polishing pressure, which affects their lifetime and detection precision.
Innovation Solution
A pressure detection device with an overload protection assembly and buffering assembly is integrated, featuring a pressure transducer, connection seat, transmission assembly, and buffering assembly, which includes an overload protection member, adjustment bolt, fixing element, and buffering members to absorb shocks and distribute excessive pressure, thereby protecting the pressure transducer and enhancing detection precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pressure detection device is used to detect polishing pressure, then the detection precision is improved, but the device is prone to excessive deformation and reduced lifespan due to overloaded pressure
Solution Approach 1:
The patent introduces a buffering assembly with buffering members (elastic elements) positioned between the pressure detection device and the polisher. These buffering members are designed to absorb excessive polishing pressure before it reaches the pressure transducer, preventing overload damage while allowing normal detection operations to proceed uninterrupted.
Solution Approach 2:
The overload protection assembly acts as an intermediary mechanism between the polishing system and the pressure detection device. It includes a protection member that can bear excessive pressure and a limiting mechanism that prevents the pressure transducer from experiencing damaging forces, thus protecting the sensitive detection components.
2Measurement precision
If the pressure detection device directly measures polishing pressure, then the detection precision is improved, but the device structure becomes more vulnerable to damage
Solution Approach 1:
The buffering assembly with elastic buffering members is installed in advance to absorb shock and excessive pressure before it reaches the pressure detection device, strengthening the overall system against overload without affecting the detection capability.
Solution Approach 2:
The overload protection assembly serves as a protective intermediary that isolates the pressure transducer from direct exposure to excessive forces, allowing the detection device to maintain its precision while being protected by the intermediate protection mechanisms.
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
The solution effectively prolongs the lifespan of the pressure detection device by absorbing excessive polishing pressure and maintaining detection precision, preventing deformation and ensuring reliable operation.
Implementation Method 1
Each sensor element 15 is placed on one spoke 14 to deform along with the spoke 14 during polishing
Implementation Method 2
When the sensor elements 15 deform during polishing, electrical resistance of the sensor elements 15 change accordingly
Implementation Method 3
The buffering assembly 60 is connected to the transmission assembly 50 away from the pressure transducer 10
Data Source
AI summary
A pressure detection device includes a connection seat, a pressure transducer connected to the connection seat, and an overload protection member connected to the connection seat. The pressure transducer includes a housing and a detection sleeve received in the housing. The housing is mounted on the connection seat. The overload protection member is positioned above the detection sleeve. A buffering space is formed between the overload protection member and the detection sleeve, so that the overload protection member can bear an amount of exerted pressure when being overloaded.