Winding Device Automatic Locking Mechanism for Wire Tension Control
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Solution Overview
Problem
Existing winding devices for tire anti-skidding wires require manual operation to switch between winding and drawing out modes, leading to potential wire slack if the operation is accidentally switched or affected by external forces, compromising safety.
Innovation Solution
A winding device with a control mechanism featuring a wheel, locking teeth, and a torsion spring system that automatically switches between locking states to prevent wire drawing out, ensuring safety by maintaining the operation state even if external forces act on the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to switch between winding and drawing out modes, then the device can be operated flexibly, but the wire may become slack if the operation is accidentally switched or affected by external forces
Solution Approach 1:
The locking means automatically switches between locking and unlocking states based on the rotational direction of the wheel, without requiring manual intervention. The system serves itself by using the wheel's rotation to trigger the appropriate locking state, eliminating the need for manual operation switching and preventing accidental wire slackening
Solution Approach 2:
The system provides automatic feedback through the locking means that detects the wheel's rotational direction and responds by engaging the appropriate locking tooth. When the wheel rotates in the drawing-out direction, the locking means automatically locks; when rotating in the winding direction, it automatically unlocks, creating a closed-loop control system that maintains wire tension
2Adaptability or versatility
If the operation part is switched to a position at which drawing out of the wire is permitted, then the wire can be drawn out to a desired length, but if switched accidentally or upon receiving external force, slack may occur in the wire
Solution Approach 1:
The locking means is pre-configured with two locking teeth that automatically engage based on wheel rotation direction. The first locking tooth is positioned to engage when the wheel rotates in the drawing-out direction, preventing accidental over-drawing or slackening before it can occur
Solution Approach 2:
The locking means transitions dynamically between two states: locked (when wheel rotates in drawing-out direction) and unlocked (when wheel rotates in winding direction). This dynamic behavior allows the system to adapt to operational needs while maintaining stability through automatic state switching based on rotational direction
3Device complexity
If a single locking tooth is used, then the device structure is simpler, but the wire may accidentally be drawn out when external force acts on the device
Solution Approach 1:
The locking means is segmented into two distinct locking teeth: a first locking tooth for preventing wire drawing out, and a second locking tooth for preventing wire winding. This segmentation allows each tooth to be optimized for its specific function and provides redundant safety against accidental wire release
Solution Approach 2:
The two locking teeth are positioned asymmetrically on the locking means, with the first locking tooth positioned to engage with teeth parts when the wheel rotates in the drawing-out direction, and the second locking tooth positioned for the opposite direction. This asymmetric positioning ensures that external forces acting in either direction will engage the appropriate locking tooth
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 ensures high safety by automatically switching to prevent wire drawing out, reducing the risk of slack and maintaining the operation state, allowing for reliable one-handed operation and reduced tensile force requirements.
Implementation Method 1
a torsion spring between the locking means and the operation means, which makes the locking means and operation means repel each other so that the gap is maintained in the engagement direction of the second locking tooth
Implementation Method 2
a wheel that winds a wire by spring force
Data Source
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AI summary
[Problem] To provide a winding device with high safety wherein an operation means is automatically switched to a position at which drawing out of a wire is prevented when the wire is drawn out. [Solution] Provided is a winding device that controls the rotational operation of a wheel (18), wherein a control mechanism (22) is provided with the following: an operation means (30) that switches between an engagement state of a first locking tooth (24a) that prevents rotation in a direction in which a wire (20) is drawn out and an engagement state of a second locking tooth (24b) that prevents rotation in a direction in which the wire (20) is wound; and a switching mechanism that, in the case that the engagement state of the second locking tooth (24b) is to be maintained, pushes the locking means back to a state in which the second locking tooth (24b) engages with the teeth parts (18c) after an operation for drawing out the wire (20), and that, in the case that the engagement state of the second locking tooth (24b) is not to be maintained, pushes the operation means (30) back to an operation position at which the engagement state of the first locking tooth (24a) is achieved, thereby shifting to a state in which the first locking tooth (24a) engages with the teeth parts (18c).