Manual Pull-Out Clamping Device for Snow Chains
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anti-skid and tire protection devices, such as snow chains, are difficult to assemble and disassemble, especially under adverse conditions, due to the complexity of manual operation and the risk of getting dirty or tangled.
Innovation Solution
A clamping device with a manual pull-out mechanism and a handle connected to the clamping device, allowing for easier assembly and disassembly by providing a separate opening for manual extension, which is connected to the tensioning means and protected from dirt when retracted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users manually reach into the anti-skid device to pull the clamping device out, then the device can be dismantled, but the user's clothing may get dirty and the handling time increases
Solution Approach 1:
A manual pull-out element is introduced as an intermediary component that extends through the housing wall. This element provides a clean interface for user interaction, allowing the clamping device to be pulled out without the user's hand needing to reach inside the dirty anti-skid device. The pull-out element acts as a mediator between the user and the clamping device, eliminating direct contact with contaminated areas.
2Object-affected harmful factors
If the clamping device is completely retracted into the housing, then it is protected from dirt, but no external contact point is available for manual operation
Solution Approach 1:
The manual pull-out element is nested within the housing structure, extending through the housing wall. When the clamping device is retracted, the pull-out element remains accessible from the outside while the clamping device itself is protected inside the housing. This nested arrangement allows the system to maintain both dirt protection for the retracted clamping device and manual accessibility through the protruding pull-out element.
3Productivity
If a separate opening is provided for manual pull-out, then assembly and disassembly are simplified, but the housing structure becomes more complex
Solution Approach 1:
The manual pull-out element serves multiple functions: it acts as a handle for manual operation, provides a sealing interface for the opening, and guides the clamping device during extraction. By making this single component multi-functional, the housing structure doesn't need additional separate mechanisms for each function, thereby limiting the increase in overall structural complexity while achieving simplified operation.
Data Source
Figure 1
AI summary
The invention relates to a tensioning device (16) for a traction device or tire protection device (1) and to a traction device or tire protection device with such a tensioning device. The traction device or tire protection device (1) is, for example, a snow chain and is mounted on a vehicle tire (2). The tensioning device (16) has a tensioning element (14) shaped like a pull-type clamping element and a housing (18) in which a retraction device (???) for automatically retracting the tensioning element (14) into the housing (18) is located. To simplify the disassembly of the traction device or tire protection device (1) and to improve its ease of use, the invention provides that a manual extension (28) for the tensioning element (14) is located at an opening (32) of the housing (18). The manual extension (28) has a handle (30) and is connected to the tensioning element (14).By pulling on the handle, the clamping device can thus be easily and ergonomically pulled out of the clamping device (16).