Throttle Grip Sealing Layout for Waterproofing and Torque Setting
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Solution Overview
Problem
Existing throttle grip devices face challenges in achieving effective waterproofing and dustproofing due to gaps between the interlocking member and the case, and difficulty in setting operating torque according to vehicle requirements.
Innovation Solution
A throttle grip device with a design that includes a cylindrical interlocking member extending to the case's bottom side, sealed by multiple seal members, and an urging mechanism to set operating torque, allowing for easy sealing and torque adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal member or seal structure is formed between the interlocking member and the case to improve waterproofing and dustproofing, then the sealing effect is improved, but the device complexity increases and it is difficult to certainly achieve waterproof and dustproof effects due to the gap location
Solution Approach 1:
The patent extracts the interlocking member from the case structure, allowing it to be a separate, removable component. This enables the seal member to be positioned effectively at the interface between the interlocking member and case, achieving reliable sealing without making the entire case structure complex. The interlocking member can be removed for maintenance while the sealed case structure remains intact.
Solution Approach 2:
The seal member acts as an intermediary element between the interlocking member and the case. It fills the gap between these two components, preventing muddy water and dust from entering the case while allowing the interlocking member to rotate freely. This intermediary component achieves waterproofing and dustproofing without requiring complex structural modifications.
2Adaptability or versatility
If a resistance force application means is disposed separately from the return spring to set operating torque based on sliding resistance, then the operating torque can be adjusted, but the device complexity increases and it becomes costly to prepare different resistance force application means for various vehicle requirements
Solution Approach 1:
The patent merges the resistance force application function with the return spring mechanism. The return spring provides both the restoring force to return the throttle grip to its initial position and the resistance force that generates operating torque. This combination eliminates the need for separate resistance force application means, reducing device complexity while maintaining the ability to adjust operating torque through spring selection.
Solution Approach 2:
The return spring serves multiple functions: it provides the restoring force for the throttle grip, generates the operating torque through its sliding resistance, and can be selected in different specifications to accommodate various vehicle requirements. This multi-functional component replaces what would otherwise require multiple separate components, making the system universally applicable across different vehicle types.
3Reliability
If the interlocking member extends to the bottom side end portion of the case with seal members at both ends, then the waterproofing and dustproofing are certainly achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses flexible seal members (such as O-rings or lip seals) at both ends of the interlocking member. These flexible sealing elements can deform to accommodate minor dimensional variations and gaps between the interlocking member and case, achieving reliable waterproofing and dustproofing without requiring extremely tight manufacturing tolerances. The flexibility of the seal members compensates for manufacturing variations.
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 device achieves reliable waterproofing and dustproofing while enabling easy setting of operating torque, enhancing stability and functionality.
Implementation Method 1
a first seal member sealing a gap between the interlocking member and the opening portion of the cover member
Implementation Method 2
a second seal member sealing a gap between the cylindrical portion of the interlocking member and the bottom side end portion of the case
Implementation Method 3
an urging means configured to urge the interlocking member toward an initial position during rotation of the throttle grip
Implementation Method 4
a friction material that generates a sliding resistance during rotation of the interlocking member
Data Source
AI summary
A throttle grip device includes an interlocking member able to rotate in conjunction with a throttle grip and a case. The interlocking member is rotatably held by the case. The throttle grip device includes a cover member covering an opening side end portion of the case. The cover member has an opening portion allowing a surface end portion having an engaged portion of the interlocking member to face the throttle grip. The throttle grip device includes a magnetic sensor capable of detecting a rotation angle of the throttle grip by detecting a rotation angle of the interlocking member. A drive source of a vehicle is controllable according to the rotation angle of the throttle grip detected by the magnetic sensor. The interlocking member includes a cylindrical portion extending to a bottom side end portion of the case.