Linear Actuator Housing Integration for Compact Assembly
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Solution Overview
Problem
Conventional linear actuators have a thick housing due to multiple components, making them difficult to assemble in limited spaces, increasing manufacturing costs, and occupying unnecessary volume.
Innovation Solution
A linear actuator with a simplified housing design featuring a plastic housing composed of interconnected containing portions for the driver, mechanical motion conversion assembly, and transmission rod assembly, eliminating the motor shell to reduce space and component count, and using a shell-less motor for direct fixation to stator and rotor shafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing is assembled by multiple components (left and right halves), then the transmission rod assembly can be facilitated for installation, but the thickness of the housing is increased and the assembling process becomes more difficult
Solution Approach 1:
The patent merges the left and right half components into a single integrated housing structure. The housing is designed as one piece that directly receives and accommodates the transmission rod assembly, eliminating the need for separate left and right half components. This integration reduces the overall housing thickness while maintaining the ability to facilitate transmission rod assembly installation through the unified structure.
2Ease of operation
If the housing is assembled by multiple components, then the transmission rod assembly can be facilitated for installation, but the assembling process becomes more difficult in limited space
Solution Approach 1:
The patent integrates multiple housing components into a single unified housing structure. This merging eliminates the complex multi-step assembly process required for separate left and right halves, reducing assembling complexity in limited spaces. The single housing structure maintains all necessary functional features while simplifying the overall assembly operation.
3Ease of operation
If the housing is assembled by multiple components, then the transmission rod assembly can be facilitated for installation, but unnecessary space or volume is occupied
Solution Approach 1:
The patent combines multiple housing components into a single integrated structure that eliminates unnecessary gaps and overlaps between separate parts. This merging reduces the overall housing volume while maintaining the installation facilitation features, ensuring that the housing occupies minimal space while still enabling easy transmission rod assembly installation.
4Ease of operation
If the housing has a plurality of components, then the transmission rod assembly can be facilitated for installation, but more molds are required for manufacture and manufacturing cost increases
Solution Approach 1:
The patent merges multiple housing components into a single integrated housing that can be manufactured as one piece using a single mold. This eliminates the need for multiple separate molds required for producing left and right half components, thereby reducing manufacturing costs while maintaining the installation facilitation capabilities through the unified structure's design.
5Strength
If the motor shell is included, then the motor components are protected, but the volume of the linear actuator is increased
Solution Approach 1:
The patent extracts and eliminates the separate motor shell component from the linear actuator assembly. The motor components are directly integrated into the main housing structure, which provides the necessary protection and support. This extraction of the redundant motor shell reduces the overall linear actuator volume while maintaining adequate protection for motor components through the integrated housing design.
6Strength
If the motor shell is included, then the motor components are protected, but the quantity of components increases and assembling process becomes more complicated
Solution Approach 1:
The patent removes the separate motor shell component from the assembly, reducing the total quantity of components. The motor components are directly mounted within the integrated housing structure, which maintains protective functions. This extraction simplifies the assembling process by eliminating the step of separately installing the motor shell while still providing necessary protection for motor components.
Data Source
AI summary
A linear actuator includes a driver (1), a transmission rod assembly (2), a mechanical motion conversion assembly (3) linked between the driver (1) and the transmission rod assembly (2), and a housing (4) covered onto the driver (1), the transmission rod assembly (2), and the mechanical motion conversion assembly (3). The housing (4) includes a lower part (40) and an upper part (41), and the lower part (40) sequentially includes a first containing portion (400) for receiving and installing the driver (1), a second containing portion (401) for receiving and installing the mechanical motion conversion assembly (3), and a third containing portion (402) for receiving and installing the transmission rod assembly (2), and the upper part (41) is covered on top of the first and second containing portions (401, 402), and the first, second and third containing portions (401, 402, 403) are integrally formed as a whole.