Motorcycle Battery Case Lid With Separate Pack Pressing Mechanism
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Solution Overview
Problem
Straddle-type vehicles with battery packs face design restrictions due to the need for a case cover that functions as both a lid and a support, limiting the degree of freedom in design and potentially allowing foreign matter to enter the battery case.
Innovation Solution
A straddle-type vehicle design incorporating a battery case with a pressing mechanism that includes an abutting member and a retainer to hold the abutting member against the battery pack, allowing for improved design flexibility while preventing battery pack movement and foreign matter entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the case cover is designed to function as both a lid and a support body for the spring, then the structure is more integrated, but the degree of freedom in design is restricted
Solution Approach 1:
The patent divides the case cover into two separate components: a lid body for closing the opening and an abutting member for supporting the spring. This segmentation allows each component to be optimized independently, enabling the lid body to be designed solely for sealing while the abutting member handles the pressing function, thereby increasing design freedom without compromising structural integration.
Solution Approach 2:
The pressing function is extracted from the lid body by introducing a separate abutting member. This extraction allows the lid body to focus exclusively on its primary function of closing the opening, while the abutting member independently handles the spring support and pressing operations, resolving the design restriction caused by multi-functionality.
2Device complexity
If the case cover structure is restricted to serve dual functions, then integration is improved, but foreign matter prevention capability may be compromised
Solution Approach 1:
By separating the lid body from the abutting member, the patent enables the lid body to be designed with optimized sealing features specifically for preventing foreign matter entry, while the abutting member independently provides battery pack support. This segmentation allows each component to specialize in its primary function without compromise.
3Reliability
If the lid body is connected via the pressing mechanism, then battery pack movement is prevented, but the lid becomes subject to pressing reaction forces
Solution Approach 1:
The patent extracts the pressing function from the lid body by introducing a separate abutting member that absorbs the pressing reaction forces. The lid body is connected to the battery case independently of the pressing mechanism, allowing it to remain free from the heavy loads generated during battery pack pressing operations.
4Device complexity
If a single case cover performs multiple functions, then the number of parts is reduced, but design flexibility is limited
Solution Approach 1:
The patent segments the case cover into a lid body and an abutting member, increasing the number of parts but enabling each component to be independently optimized for its specific function. This segmentation provides greater design flexibility, allowing the lid body to focus on sealing while the abutting member handles pressing operations.
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 solution enhances design freedom by isolating the lid from the pressing mechanism's reaction force, preventing battery pack movement and protecting the mechanism from foreign matter, thus ensuring effective sealing and reduced risk of damage.
Implementation Method 1
a compression spring 61, a first spring seat 62 fixed to the inner lid 51 and configured to support a first end portion of the compression spring 61, and a second spring seat 63 connected to the inner lid 51 so as to be movable relative to the inner lid 51 and configured to support a second end portion of the compression spring 61
Data Source
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AI summary
There is provided a straddle-type vehicle including: a battery case having an accommodation space that accommodates a battery pack and an opening for attaching and detaching the battery pack via the opening that opens the accommodation space; a pressing mechanism including an abutting member capable of abutting the battery pack in a state where the battery pack is accommodated in the accommodation space of the battery case, and a retainer that holds the abutting member abutting the battery pack while pressing the abutting member toward the battery pack; and a lid body connected to the battery case via the pressing mechanism and that opens and closes the opening of the battery case.