Actuator Venting Structure for IP68 Sealing and Air Discharge
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Solution Overview
Problem
Existing actuator devices struggle to maintain waterproof and dustproof capabilities while allowing for the discharge of air to an external environment.
Innovation Solution
The actuator device incorporates a base unit with a ventilation hole equipped with a pressure relief unit for unidirectional air discharge, a sliding unit for longitudinal movement, and a driving unit for operational movement, ensuring waterproof and dustproof conditions with an IP68 rating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is sealed to achieve waterproof and dustproof capabilities, then protection against water and dust is improved, but air discharge capability deteriorates
Solution Approach 1:
The patent employs a flexible membrane structure as the seal member in the seal groove. This membrane can deform elastically to allow air passage while maintaining the waterproof and dustproof seal when not under pressure differential, thus resolving the contradiction between sealing and air discharge requirements.
Solution Approach 2:
The seal member's physical state changes based on pressure differential across the housing. Under normal conditions, it maintains a sealed state; when air pressure differential occurs, it deforms to allow air passage. This dynamic parameter change enables both waterproof/dustproof capability and air discharge functionality.
2Reliability
If multiple seal members are added to enhance waterproof and dustproof abilities, then protection capability is improved, but device complexity increases
Solution Approach 1:
The patent integrates the air discharge function into the existing seal member structure, making it multi-functional. The same seal member that provides waterproof and dustproof protection also serves as the air discharge pathway when needed, eliminating the need for separate components and reducing overall device complexity.
Solution Approach 2:
The patent merges the sealing function and air discharge function into a single integrated seal member structure. By combining these two previously separate functions into one component, the design reduces the number of parts while maintaining both waterproof/dustproof capability and air discharge capability.
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 device effectively maintains a waterproof and dustproof seal while allowing air discharge, achieving an IP68 rating for water resistance and dustproofing.
Implementation Method 1
a pressure relief unit (30) mounted in the ventilation hole (15) and operable for allowing air discharge in a unidirectional manner from the receiving space (111) to an external environment
Data Source
AI summary
An actuator device includes a base body that defines a receiving space. A first end subunit has a ventilation hole, a first oil injection hole, and a first oil injection nozzle extending from the first oil injection hole into the receiving space. A second end subunit is connected to the base body. A sliding unit is slidable relative to the base body, and has a slide table, a nut seat connected to the slide table, and a connection hole connected to the slide table and the base body. A pressure relief unit is mounted in the ventilation hole for allowing air to be discharged from the receiving space to an external environment. A driving unit is operable for driving movement of the sliding unit.