Spinning Reel Drag Switch Return Mechanism Torque
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Solution Overview
Problem
Existing spinning-reel drag switch devices require significant force to return the drag switch lever to the braking position from the non-braking position due to the close proximity of the kick member and shaft part, limiting the torque generation and increasing the stress on components.
Innovation Solution
The spinning-reel drag switch device repositions the pivot axis of the operation member closer to the fishing-rod attachment and behind the rotation shaft, allowing a longer distance for the press member to apply torque, reducing the required force for the return action and enhancing durability by distributing stress more evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the kick member and shaft part are disposed close to each other to achieve compact disposition of the return mechanism, then the device complexity is reduced, but the torque generation capability deteriorates and the force required for return operation increases
Solution Approach 1:
The invention repositions the second gear member along the axial dimension, placing it closer to the fishing-rod attachment than the face gear shaft, while the kick member extends in a different spatial orientation. This dimensional rearrangement allows the kick member to have a longer effective arm length for torque generation without increasing the overall footprint of the mechanism, thus resolving the contradiction between compact disposition and torque generation capability
Solution Approach 2:
The invention introduces a movable arm that can extend and retract, allowing the kick member's effective length to dynamically adjust. When torque is needed, the arm extends to provide longer leverage; when compactness is needed, the arm can be retracted. This dynamic adjustment resolves the contradiction between requiring long torque arms and maintaining compact mechanism disposition
2Force
If the kick member is designed with a long arm to generate sufficient torque, then the force required for return operation is reduced, but the device complexity and space requirements increase
Solution Approach 1:
The invention nests the kick member's arm structure within the existing gear mechanism housing. The arm can be folded or telescopic, allowing it to occupy minimal space when not in use while providing full extension when torque is required. This nesting approach allows long-arm torque generation without permanently increasing device complexity or space requirements
Solution Approach 2:
The kick member is divided into multiple segments that can be articulated relative to each other. This segmentation allows the arm to fold back onto itself or collapse into a compact configuration when not needed, while still providing the full extended length for torque generation when required, thus avoiding permanent increase in device complexity
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
This configuration reduces the force needed for the return operation and enhances the durability of the press member and first arm by allowing larger torque application with reduced stress, enabling efficient switching between drag states with minimal effort.
Implementation Method 1
The second gear member meshes with a first gear member mounted to the rotation shaft of the handle
Implementation Method 2
the kick member rotates in the same direction as the second gear member and kicks (i.e., hits) the return member
Data Source
AI summary
A spinning-reel drag switch device includes a return mechanism. The return mechanism includes a first arm, a second gear member, and a press member. The first arm is configured to pivot in conjunction with the operation member. The second gear member rotates about an axis that is positioned to interpose the rotation shaft between the axis and a spool such that a distance between the axis and a fishing-rod attachment is greater than a distance between a handle rotation shaft and the fishing-rod attachment. The second gear member is configured to receive rotation force from the first gear member. The press member is mounted to the second gear member to press the first arm. The return mechanism presses the first arm in conjunction with rotation of the handle in a fishing line winding direction to return the operation member to a first position from a second position.