Electric Actuator Integrated Body Design for Compact Rigidity
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Solution Overview
Problem
Conventional electric actuators have a large number of parts, leading to increased production costs and size, and lack a low profile design suitable for constrained environments, with a need for enhanced rigidity and heat dissipation.
Innovation Solution
The electric actuator integrates the driving section and feed screw within a single body, using a drive force transmission belt to minimize dimensions and improve rigidity, while incorporating heat dissipating grooves to enhance thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the driving section and feed screw are disposed in separate bodies, then the assembly and maintenance are easier, but the rigidity decreases and the overall size increases
Solution Approach 1:
The patent combines the driving section and feed screw into a single integrated body, eliminating the need for separate mounting structures and brackets. This merging of components directly increases rigidity by removing interfaces between separate parts while reducing the total number of components that need to be assembled and maintained.
2Ease of manufacture
If the driving section and feed screw are disposed in separate bodies, then the manufacturing and assembly are simpler, but the longitudinal dimension and lateral dimension increase
Solution Approach 1:
By integrating the driving section and feed screw into one body, the patent eliminates the need for additional mounting space and connection structures, thereby reducing the longitudinal dimension of the actuator while maintaining ease of manufacture through modular component design within the integrated body.
Solution Approach 2:
The patent optimizes the spatial arrangement of components within the integrated body by utilizing three-dimensional space efficiently, allowing the driving section and feed screw to be positioned in a compact configuration that reduces the lateral dimension without compromising assembly simplicity.
3Device complexity
If conventional electric actuators are used, then the structure is simple, but the heat dissipation capability is insufficient
Solution Approach 1:
The patent incorporates heat dissipation grooves at specific locations on the integrated body where heat generation is concentrated, particularly around the driving section. This localized heat dissipation structure maintains overall structural simplicity while effectively addressing thermal management needs without requiring complex cooling systems.
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
This design reduces the longitudinal and lateral dimensions of the actuator, increases overall rigidity, and improves heat dissipation, making it more compact and efficient for use in space-constrained environments.
Implementation Method 1
a drive force transmission mechanism for transmitting a drive force output in the driving section to the feed screw
Implementation Method 2
a drive force transmission belt to minimize dimensions and improve rigidity
Data Source
AI summary
In an electric actuator, a first bore portion in which a driving section is accommodated, and a second bore portion that extends in parallel with the first bore portion and in which a feed screw of a drive force transmission mechanism is inserted, are provided in the interior of an elongate body. Further, a rotary drive source of the driving section and the feed screw are connected through the drive force transmission mechanism. In addition, a drive force of the rotary drive source is transmitted to the feed screw through the drive force transmission mechanism for displacing a slider disposed on an upper portion of the body along an axial direction.