Vehicle Mount Wedge Ring Hook Locking Mechanism
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Solution Overview
Problem
The existing hook structure in vehicle mount assemblies is prone to separation due to vibrations, resulting in insufficient fastening force and assembly robustness, which complicates weight reduction efforts and increases the risk of component detachment during vehicle operation.
Innovation Solution
A wedge ring is integrated to support and lock the hooks of the support bracket to the mounting bracket, preventing them from bending or separating, thereby maintaining the engaged state and enhancing assembly stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a hook structure is used to assemble plastic parts in the mount assembly, then weight reduction is achieved and assembly is simplified, but the fastening force becomes insufficient and hooks may separate from stop protrusions due to vibrations
Solution Approach 1:
A wedge ring is introduced as an intermediary component between the hook and the stop protrusion. The wedge ring receives the hook from one side and presses it against the stop protrusion from the other side, acting as a mediator that enhances the fastening reliability of the hook structure without compromising the weight reduction benefits of using plastic parts.
Solution Approach 2:
The wedge ring applies a preliminary counteracting force to prevent the hook from bending backward and separating from the stop protrusion under vibrational loads. By pre-positioning the wedge ring to support the hook, the design anticipates and counteracts the harmful separating force before it can cause detachment.
2Strength
If the support height of the inner core and center bolt is increased to improve rigidity at the mount input point, then rigidity is improved, but the height of the mount increases which contradicts weight reduction goals
Solution Approach 1:
The support function is segmented between two distinct components: the inner core/center bolt assembly provides primary structural support, while the wedge ring provides secondary support and locking function. This segmentation allows the mount to achieve sufficient rigidity without increasing the overall height, as each component performs its specific function efficiently.
Solution Approach 2:
Instead of increasing height (vertical dimension) to improve rigidity, the solution moves to another dimension by introducing the wedge ring that acts radially or laterally to support the hook. This dimensional shift allows rigidity enhancement without compromising the compact height of the mount assembly.
Data Source
AI summary
A mount assembly for a vehicle is provided. The mount assembly includes a mount that supports an in-vehicle device and a support bracket that is coupled and locked to the mount. The support bracket includes a first hook. In addition, the mount assembly includes a mounting bracket that couples the mount to a vehicle body. The mounting bracket includes a housing to which the mount is coupled and a first stop protrusion to which the first hook of the support bracket is hook-coupled. A wedge ring supports the first hook from behind to prevent the first hook from bending backward and being separated from the first stop protrusion. The wedge ring is formed in a ring shape and includes a protruding portion that protrudes radially outward to support the first hook from behind.