Servo Driver Capacitor Housing Assembly With Elastic Cushion Retention
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Solution Overview
Problem
Existing servo driver configurations for holding capacitors in servo motors are not suitable for moderate heat generation scenarios, as they rely on high thermal conductivity fillers, and do not facilitate easy assembly when alternative heat dissipation methods are used.
Innovation Solution
A servo driver design featuring a capacitor stored in a box-like case body with an orthogonal opening, elastically biased by a cushion material between the capacitor and the housing, allowing easy assembly and reliable holding, even without high thermal conductivity fillers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a high thermal conductivity filler is used between the capacitor and storage case, then heat dissipation efficiency is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent extracts the high thermal conductivity filler from the necessary components, demonstrating that effective heat dissipation can be achieved without it. The storage case directly contacts the capacitor body through its inner peripheral surface, eliminating the need for additional filler materials while maintaining thermal management effectiveness.
Solution Approach 2:
The patent replaces complex thermal management systems with simpler, more economical solutions. By using the storage case's own structure (inner peripheral surface) for direct heat dissipation, it eliminates expensive filler materials and simplifies the overall device construction while maintaining adequate thermal performance.
2Temperature
If a metal storage case with filler is used, then heat dissipation is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent removes the filler material from the assembly process, allowing the capacitor to be directly placed into the storage case without additional steps for filler application or positioning. This extraction of the filler component significantly simplifies the manufacturing process while the storage case's inner peripheral surface continues to provide effective heat dissipation.
Solution Approach 2:
The storage case's inner peripheral surface serves dual functions: it provides structural containment for the capacitor and simultaneously acts as a heat dissipation path. This self-service approach eliminates the need for separate filler materials, making the device easier to manufacture and assemble.
3Reliability
If a complex holding structure is used to secure the capacitor, then reliability of capacitor holding is improved, but ease of operation deteriorates
Solution Approach 1:
The patent merges the holding function with the storage case structure itself. The inner peripheral surface of the storage case simultaneously provides both structural support and capacitive holding, eliminating the need for separate holding mechanisms. This integration maintains reliable capacitor positioning while significantly improving ease of assembly and operation.
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
Facilitates easy assembly and reliable capacitor holding within the servo driver, while allowing efficient heat dissipation through the use of a cushion material with high thermal conductivity.
Implementation Method 1
a cushion material that is elastically deformable and is interposed between the closing portion and the capacitor
Implementation Method 2
the cushion material with high thermal conductivity
Data Source
AI summary
A servo driver is provided with a housing, a substantially cylindrical capacitor, and a case body in which the capacitor is stored. The case body has a substantially box-like shape formed by being provided with an opening portion that makes it possible to take in and out the capacitor with respect to the case body along a direction orthogonal to an axial direction of the capacitor, and is assembled to the housing so that the opening portion is covered with a closing portion that is a part of the housing. An elastically deformable cushion material is interposed between the closing portion and the capacitor. While being elastically biased to a bottom portion of the case body, the capacitor is thereby sandwiched and held between the closing portion and the bottom portion.