Anti-slip Device Torque Arm Segmentation for Wheel Installation
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Solution Overview
Problem
The installation of front-type anti-skid devices on motor vehicle wheels is difficult due to the complexity of the fixing system, especially in extreme weather conditions like snow or ice, where stress and lack of traction exacerbate the challenge of securing the central member to the rim.
Innovation Solution
The anti-skid device features a fixing bolt with an annular groove and a torque arm that can be securely detached and reattached, allowing for easier installation by first screwing the bolt onto the rim nut and then attaching the torque arm, which includes a blade and spring mechanism for secure positioning and a hexagonal key for tool cooperation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixing system uses an intermediate arm and tightening link to secure the central member to the rim, then the device achieves reliable fixation, but the installation process becomes complex and difficult
Solution Approach 1:
The fixing system is divided into separate components: the fixing bolt and the torque arm with integrated link. The bolt can be installed independently first, then the torque arm is attached separately. This segmentation allows simpler installation steps while maintaining the reliable fixation function through the coordinated action of the separated components.
2Device complexity
If the torque arm is integrated with the fixing bolt, then the structure is simplified, but the installation becomes more difficult in extreme weather conditions
Solution Approach 1:
The torque arm is made detachable from the fixing bolt through a reversible connection mechanism. This allows the components to be installed separately in stages, reducing the difficulty of installation in extreme conditions while maintaining structural simplicity. The detachable design enables flexible installation procedures adapted to weather conditions.
Solution Approach 2:
The connection between the torque arm and fixing bolt is made dynamic and reversible rather than fixed. This allows the assembly to be adjusted, removed, or reconfigured during installation if needed, providing operational flexibility that simplifies installation in challenging weather conditions while keeping the overall structure simple.
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 design significantly simplifies the installation process by allowing the separation and reattachment of the torque arm and fixing bolt, reducing the complexity and stress associated with installing the device, especially in adverse weather conditions.
Implementation Method 1
the blade cooperates with a spring, in particular a wire spring, for the purpose of maintaining the blade in the closed position by default
Implementation Method 2
This central member is intended to transmit to the radial arms a pressing force against the outer sidewall of the tire, thereby inducing the retention of the raceway located at their end on the tread of the tire concerned
Data Source
Figure 1
Figure 2~3
Figure 4~9
AI summary
This anti-slip device for a motor vehicle wheel comprises: - a track intended to be pressed against the tread of a vehicle tire; - radial arms (5) for holding said track against the tread of said tire, said radial arms being connected to a central element fixed to the rim of the wheel in question by means of an assembly that can be secured to one of the nuts of said rim and consisting of: o a fixing bolt (12) on said nut; o a torque arm (14), reversibly fixed to the free end of said bolt and oriented perpendicular to the axis of revolution of the bolt; o a traction element (10) fixed near the other end of said arm. The fixing bolt (12) is provided near its free end with an annular groove (22).The torque arm is equipped with means suitable for cooperating with the annular groove, in order to secure/unsecure the fixing bolt on the torque arm.