Linear Actuator Buffer Assembly for Vibration and Impact Absorption
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Solution Overview
Problem
Existing linear actuators are prone to damage from sudden external forces due to their high rigidity and inability to effectively buffer variations in load, which can lead to structural damage.
Innovation Solution
A linear actuator with a buffer assembly that includes a sliding rod, motor, and a buffer assembly comprising an elastic element and an outer sleeve, where the elastic element is pre-compressed to absorb vibrations and impacts by moving the outer sleeve along the axial direction of the sliding rod, limiting its movement with a stopper and limiting ring to adjust buffering force and travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the linear actuator uses high rigidity structure to bear heavy loads, then the structural strength is sufficient, but the actuator cannot buffer sudden external forces and is prone to damage
Solution Approach 1:
The patent applies beforehand cushioning by pre-compressing the elastic element (spring) within the buffer assembly before actual operation. This pre-compression creates a ready-to-absorb energy state that can immediately cushion sudden external forces or impacts, preventing damage to the linear actuator while maintaining the high rigidity structure needed for heavy load bearing.
2Stability of the object's composition
If the linear actuator structure is made of high rigidity, then it can bear heavy loads, but variations of sudden external forces cannot be buffered
Solution Approach 1:
The patent introduces an intermediary buffer assembly between the motor and the sliding rod. This buffer assembly, containing a pre-compressed elastic element, acts as a mediator that absorbs sudden external forces and impacts, protecting the high rigidity structure from damage while allowing the structure to maintain its rigidity for heavy load bearing.
3Reliability
If the elastic element is pre-compressed to absorb vibrations and impacts, then the buffering capability is enhanced, but the device complexity increases
Solution Approach 1:
The patent applies the nested doll principle by placing the elastic element (spring) inside the outer sleeve, which is itself connected to the sliding rod assembly. This nested configuration allows the buffer assembly to be compact and integrated within the existing linear actuator structure, minimizing space requirements and reducing overall device complexity while maintaining effective buffering 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 buffer assembly effectively absorbs vibrations and impacts caused by the motor driving the sliding rod, preventing damage and allowing for adjustable buffering force and travel, thus enhancing the durability and safety of the linear actuator.
Implementation Method 1
The elastic element is pre-compressed along the axial direction of the sliding rod... The elastic element separately pushes an inner wall of the outer sleeve and the sliding rod
Data Source
AI summary
A linear actuator includes a sliding rod, a motor and a buffer assembly. The motor connects the sliding rod to drive the sliding rod. The buffer assembly is disposed at an end of the sliding rod and includes an elastic element and an outer sleeve. The elastic element is received in the outer sleeve. The sliding rod connects the outer sleeve. The outer sleeve is movable along an axial direction of the sliding rod. The elastic element separately pushes an inner wall of the outer sleeve and the sliding rod. The elastic element is pre-compressed along the axial direction of the sliding rod. The buffer assembly can absorb vibration and impact caused by the motor driving the sliding rod.