Hinge Bracket for In-Vehicle Electronics Dynamic Load Absorption
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Solution Overview
Problem
Existing fixture structures for in-vehicle electronic apparatuses are inadequate for handling dynamic loads when the center equipment placement section has a complicated surface shape, such as a surface swelling out toward the rear of the vehicle body, and when dynamic loads are indirectly applied through objects.
Innovation Solution
A fixture structure with a hinge part allowing the lower portion of the in-vehicle electronic apparatus fixture bracket to rotate and a rotational displacement accepting part that can bend, enabling the apparatus to retreat forward while absorbing dynamic loads, even with complex surface shapes and indirect load inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the center equipment placement section has a complicated surface shape swelling out toward the rear of the vehicle body, then the fixture structure cannot allow the in-vehicle electronic apparatus to retreat properly, but a simple parallel movement along elongated holes is insufficient for complex geometries
Solution Approach 1:
The patent transforms the rigid parallel movement constraint into a dynamic hinge-based rotation mechanism. The lower portion of the fixture bracket is designed to rotate relative to the upper portion about a hinge axis, enabling the electronic apparatus to retreat in multiple directions rather than being constrained to a single parallel path. This dynamic adaptation allows the fixture to accommodate complex surface geometries while maintaining reliable retreat functionality.
Solution Approach 2:
The fixture bracket is segmented into an upper portion and a lower portion connected by a hinge part. This segmentation allows independent movement of the lower portion relative to the upper portion, enabling the structure to adapt to complex surface shapes. The hinge connection permits rotational movement that accommodates varying retreat directions while maintaining overall structural integrity.
2Reliability
If dynamic load is indirectly inputted through an article in between, then the existing fixture structure cannot properly absorb the load, but direct input structures are inadequate for indirect load paths
Solution Approach 1:
The hinge mechanism provides dynamic load absorption by allowing rotational movement that accommodates indirect load paths. When dynamic loads are transmitted through intermediate articles, the hinge joint can rotate to absorb these loads in multiple directions, rather than requiring direct axial load paths. This makes the fixture adaptable to various load transmission scenarios including indirect loading through dashboard components.
3Length of moving object
If the fixture structure uses elongated holes with neck parts for retreat, then parallel movement is enabled, but retreat stroke is limited and alignment requirements are strict
Solution Approach 1:
The patent transitions from one-dimensional parallel linear movement along elongated holes to two-dimensional rotational movement about a hinge axis. This dimensional change allows the lower portion of the fixture to retreat in an arc rather than a straight line, significantly increasing the available retreat stroke while reducing alignment precision requirements. The rotational degree of freedom provides a more forgiving geometric relationship between mounting points.
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 allows for effective absorption of dynamic loads, reduces damage to the in-vehicle electronic apparatus, and provides a larger retreat stroke, ensuring the apparatus can move freely without strict alignment between load input and retreat direction, even with complex surface shapes and indirect load applications.
Implementation Method 1
a hinge part allowing a lower portion of the in-vehicle electronic apparatus fixture bracket to rotate, together with the in-vehicle electronic apparatus, toward the front of the vehicle body about an upper portion of the in-vehicle electronic apparatus fixture bracket
Implementation Method 2
a rotational displacement accepting part allowing the lower portion of the in-vehicle electronic apparatus fixture bracket to be displaced due to its own rotation toward the front of the vehicle body
Data Source
AI summary
A fixture structure for an in-vehicle electronic apparatus includes an in-vehicle electronic apparatus fixture bracket through which an in-vehicle electronic apparatus is attached to a vehicle body. The in-vehicle electronic apparatus fixture bracket includes a retreat structure part allowing the in-vehicle electronic apparatus to retreat toward the front of the vehicle body when a dynamic load is inputted into the in-vehicle electronic apparatus. The retreat structure part includes: a hinge part allowing a lower portion of the in-vehicle electronic apparatus fixture bracket to rotate together with the in-vehicle electronic apparatus, toward the front of the vehicle body about an upper portion of the in-vehicle electronic apparatus fixture bracket; and a rotational displacement accepting part allowing the lower portion of the in-vehicle electronic apparatus fixture bracket to be displaced due to its own rotation toward the front of the vehicle body.