Sliding Power Supply Device Case Length Reduction
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Solution Overview
Problem
Conventional sliding power supply devices face challenges in mounting due to the need for longer cases with increased slide stroke, and they require additional components to prevent wiring harness droop or curve, making the structure complex and costly.
Innovation Solution
A sliding power supply device with a shorter case and an extra length absorption portion, such as a subcase, that supports the wiring harness further away from the slider's movement end, allowing for extended and contracted wiring harness configurations to absorb extra length, thereby reducing the overall case length and eliminating the need for droop prevention components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the case length is increased to accommodate larger slide stroke, then the wiring harness can be extended further, but the mounting space requirement increases and the device becomes more complex
Solution Approach 1:
The patent applies nesting by placing the extra length absorption portion inside the case. The subcase or storage compartment is positioned within the case interior, allowing the wiring harness to be stored in a nested configuration. This enables the wiring harness to achieve extended effective length without proportionally increasing the outer case dimensions, thus resolving the contradiction between case length and mounting space.
Solution Approach 2:
The patent utilizes three-dimensional space management by arranging the wiring harness in a folded or coiled configuration within the case, then leading it out through strategically positioned openings. The extra length absorption portion is positioned to absorb excess harness length in the vertical or lateral dimension rather than extending the case length horizontally, thereby reducing the mounting footprint while maintaining wiring harness functionality.
2Reliability
If additional components are added to prevent wiring harness droop or curve, then the wiring harness stability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies self-service by designing the extra length absorption portion to automatically manage wiring harness positioning through its structural configuration. The subcase or storage compartment's geometry naturally guides and supports the wiring harness, preventing droop and curve without requiring additional active components or complex mechanisms. The structure serves its own function of harness management, eliminating the need for separate droop prevention components.
Solution Approach 2:
The extra length absorption portion acts as an intermediary element between the wiring harness and the case structure. This intermediate component provides a dedicated space and structural guidance for the wiring harness, mediating the harness's path and preventing unwanted droop or curve. By introducing this intermediate structure, the patent achieves wiring harness stability without directly modifying the harness itself or adding complex active control mechanisms.
3Length of moving object
If the case length is reduced to simplify mounting, then the mounting space is reduced, but the wiring harness may not have sufficient length for large slide strokes
Solution Approach 1:
The patent applies dynamics by creating a movable or flexible wiring harness arrangement within the compact case. The wiring harness is configured to be extendable from the extra length absorption portion, allowing it to dynamically adjust its effective length based on the slide stroke requirement. This dynamic configuration enables the wiring harness to provide sufficient length for large slide strokes while the case itself remains compact, resolving the contradiction between case length reduction and wiring harness extendability.
Solution Approach 2:
The patent applies preliminary action by pre-positioning the extra length absorption portion within the case to store the wiring harness in a compact, organized state. The wiring harness is pre-folded or pre-coiled in the subcase or storage compartment, with strategic lead-out points positioned to facilitate easy extension. This preliminary arrangement ensures that when the wiring harness needs to be extended for large slide strokes, it can be quickly deployed from its pre-positioned state without requiring additional space in the case.
Data Source
AI summary
Provided is a sliding power supply device which can reduce entire length of a case extendably housing a wiring harness, for a large slide stroke of a sliding seat and such. The sliding power supply device includes a long case extendably housing a wiring harness, a slider arranged slidable in a longitudinal direction of the case and arranged to lead out the wiring harness to outside of the case, and an extra length absorption portion arranged to support a wiring harness portion lead outside of the case such that the wiring harness portion is lead out at location further away from a movement end of the slider in the longitudinal direction of the case. The extra length absorption portion is a subcase having at least a bottom plate portion. Both ends of the wiring harness portion in a movement direction of the slider are positioned at the same height.