Vehicle Door Handle Base Attachment Structure
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Solution Overview
Problem
Existing handle base attachment structures restrict movement and adjustment, making it difficult to adjust the attachment position due to positional deviations during assembly and limiting temporary fixation capabilities.
Innovation Solution
The proposed structure includes a handle base with hook-shaped pressing portions and an elastic locking piece that temporarily fix the handle base to the door panel, allowing for adjustment and preventing detachment, using a sliding mechanism and elastic locking to secure the handle base at a predetermined position until final mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the handle base is fixed using the related-art structure with bearing edges and elastic arms, then the handle base is securely fixed to the door panel, but the attachment position cannot be adjusted even when positional deviation occurs
Solution Approach 1:
The fixation function is divided into two independent stages: temporary fixation using bearing edges that allow position adjustment, and final fixation using elastic arms that provide secure locking. This segmentation enables both adjustability during assembly and reliability after mounting.
Solution Approach 2:
The bearing edges perform preliminary fixation that allows position adjustment before final mounting. This preliminary action enables workers to correct positional deviations before the elastic arms engage and lock the handle base in its final position.
2Ease of manufacture
If the handle base structure is simplified to allow easy assembly, then assembly workability is improved, but the handle base cannot be temporarily fixed at a predetermined position
Solution Approach 1:
The bearing edges act as an intermediary mechanism between the handle base and door panel during assembly. They provide a simple, easy-to-assemble interface that simultaneously enables temporary fixation and position adjustment, bridging the gap between simplified structure and operational capability.
3Device complexity
If the fixation member only draws the external element toward the panel, then the structure is simple, but multiple functions (forward, rearward, width, and rotation restriction) require complex abutment structures
Solution Approach 1:
The movement restriction functions are segmented between two components: bearing edges handle forward/rearward/width direction restrictions through simple geometric abutment, while elastic arms handle rearward movement restriction through elastic engagement. This segmentation maintains structural simplicity while achieving comprehensive movement control.
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 solution enhances assembly workability by allowing for precise adjustment and secure temporary fixation of the handle base, preventing unintended detachment and improving the overall mounting process without requiring precise dimensional accuracy.
Implementation Method 1
an elastic locking piece which enters the rear opening in accordance with a sliding operation of the handle base toward the front and abuts against a rear edge extending in a slit type rearward from both sides of a rear end edge of the front opening
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
The door handle device of a vehicle is provided with: a handle base disposed along the rear surface of a door panel; and an operation handle that is coupled to the handle base. The handle base has hook-shaped pressing portions that ride on a protruding portion provided to the oppossed side edges along the sliding direction of a mounting opening provided to the door panel accompanying a sliding operation along the door panel; a panel-abutting portion that sandwiches the door panel in cooperation with the hook-shaped pressing portions; and an elastic locking piece that restricts the rearwards motion of the handle base by resilient locking to the center of a rear end edge of the mounting opening, and restricts removal of the hook-shaped pressing portions from the protruding portion.