Compact Mechanical Lifter Damping for 3C Push-Latch Assemblies
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Solution Overview
Problem
Existing lifters with damping are bulky, difficult to assemble, and often hydraulic, leading to pollution issues, making them unsuitable for 3C products that require a lightweight, compact, and easy-to-operate solution.
Innovation Solution
A lifter with damping comprising an outer casing, gear rack, guiding groove, springs, a moving body with a damping gear and circulating hooking assembly, which absorbs kinetic energy and prevents accidental triggering through controlled rebound, using a PG-07F rotary plastic damper and DL-250 push latch for reduced volume and no oil spills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hydraulic dampers are used in lifters, then damping function is achieved, but the device becomes bulky and prone to pollution
Solution Approach 1:
The patent replaces the traditional hydraulic damping system with a mechanical damping structure consisting of a damping gear, gear rack, and spring mechanism. This substitution eliminates the need for hydraulic fluid while maintaining the damping function through mechanical energy absorption and conversion, thereby reducing volume and eliminating pollution risks.
Solution Approach 2:
The damping mechanism employs a composite structure combining elastic springs and friction-based damping gears. The spring provides elastic energy storage and release, while the damping gear with gear rack creates controlled mechanical friction, together achieving effective damping in a compact configuration suitable for 3C products.
2Reliability
If traditional dampers are used, then shock absorption is provided, but the structure becomes complex and difficult to assemble
Solution Approach 1:
The patent merges the damping function with the existing lifter structure by integrating the damping gear directly into the moving body and the gear rack onto the outer casing. This integration eliminates separate damper components and simplifies the overall structure, making the device easier to assemble while maintaining shock absorption capability.
Solution Approach 2:
The damping gear and gear rack serve multiple functions: they provide damping during normal operation, enable the circulating hooking mechanism, and facilitate the push-latch operation. This multi-functionality reduces the need for separate components, thereby simplifying the overall structure and assembly process.
3Reliability
If hydraulic dampers are used, then damping is achieved, but oil pollution occurs in the circuit structure
Solution Approach 1:
The patent completely replaces the hydraulic fluid-based damping system with a dry mechanical damping system using springs and friction-based damping gears. This substitution eliminates oil pollution by using solid mechanical components that absorb and dissipate energy through elastic deformation and controlled friction without requiring any lubricating fluid.
4Volume of moving object
If the lifter is made compact for 3C products, then ease of operation is improved, but damping function may be compromised
Solution Approach 1:
The patent optimizes the damping parameters by adjusting the spring constants, gear tooth profiles, and friction characteristics of the damping gear to achieve effective damping in a compact configuration. By carefully selecting and tuning these parameters, the system maintains adequate damping performance while minimizing the overall volume suitable for 3C product integration.
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 provides a compact, easy-to-assemble, and pollution-free lifter with damping suitable for 3C products, effectively managing kinetic energy and preventing accidental triggering, suitable for use as an accessory in electronic switches.
Implementation Method 1
each hollow slider houses a spring, and one end of the spring is inserted by one fixing rod thus the hollow slider is able to slide to the corresponding accommodating bin and compress the spring at the same time
Implementation Method 2
a damping gear, inserted into the round hole and rotatably connected to the gear rack, wherein when the damping gear rotates, kinetic energy of the outer casing moving relatively to the moving body is able to be absorbed
Data Source
AI summary
A lifter with damping is disclosed. It comprises: an outer casing, having an opening on a top end thereof, a gear rack formed on an inside of one side thereof, a guiding groove formed on an opposite side of the gear rack, and two accommodating bins extend downwards on the bottom of the outer casing; a moving body, movably installed inside the outer casing, wherein a round hole is formed in a middle portion of the moving body, a limiting hook is formed corresponding to the guiding groove so as to slide along the guiding groove, bottoms of the moving body corresponding to the two accommodating bins form a hollow slider, respectively, a grab bar is formed horizontally between the hollow sliders, and each hollow slider houses a spring; a damping gear, inserted into the round hole and rotatably connected to the gear rack; and a circulating hooking assembly.