Adjustable Vehicle Hood Locking Device
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Solution Overview
Problem
Existing vehicle bonnet locking devices are rigid and require adjustment only after the bonnet is closed, necessitating repeated opening and closing for accurate positioning, which is inconvenient and inefficient.
Innovation Solution
A bonnet locking device with adjustable components accessible after vehicle assembly, allowing for adjustment of the bonnet's positioning relative to the vehicle body in the opening/closing axis, with screw/nut assemblies enabling Z and Y-axis adjustments, and accessible from outside the vehicle, even when the bonnet is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the locking device uses fixed positioning determined at assembly, then the device is rigid and stable, but the bonnet positioning cannot be adjusted after assembly
Solution Approach 1:
The locking device transitions from a fixed rigid structure to a dynamic adjustable structure. The second part is made movable relative to the first part through guide slots and adjustment means (screws/nuts), allowing the bonnet positioning to be modified after assembly while maintaining stability during operation.
Solution Approach 2:
The locking device is divided into multiple independent parts: a first part fixed to the bonnet, a second part with striker that can move relative to the first part, and adjustment means. This segmentation allows independent adjustment of the second part's position while the first part remains fixed, resolving the contradiction between rigidity and adjustability.
2Ease of operation
If adjustment is made after the bonnet is closed, then the adjustment can be performed, but the adjustment operation must be repeated multiple times and is inconvenient
Solution Approach 1:
The adjustment means are designed to be accessible from outside the vehicle when the bonnet is closed, allowing the adjustment to be performed in advance before final assembly completion. This eliminates the need to open and close the bonnet repeatedly for adjustment, as the adjustment can be made with the bonnet in its closed position.
Solution Approach 2:
Guide slots act as an intermediary mechanism that allows the second part to move relative to the first part while maintaining proper alignment. This enables smooth adjustment without requiring the bonnet to be opened and closed repeatedly, reducing time loss and improving operational convenience.
3Ease of operation
If the adjustment means are not accessible from outside the vehicle, then the device structure is simple, but the adjustment cannot be performed conveniently after assembly
Solution Approach 1:
The second part serves multiple functions: it contains the striker for locking, provides adjustment capability through relative movement, and offers accessible adjustment means from outside the vehicle. By combining these functions in a single component, the device achieves improved accessibility without proportionally increasing overall complexity.
Solution Approach 2:
The adjustment means are positioned and oriented such that they can be accessed from outside the vehicle through the guide slots, utilizing the spatial dimension created by the movable second part. This dimensional arrangement allows adjustment accessibility without requiring complex external mechanisms or disassembly.
Data Source
Figure 1~2
Figure 3~5
AI summary
The device (1) has a part (11) interdependent of a bonnet (2), another part with a valve bridge (12) interdependent of a striker (13), and a third part formed by a lock (14) interdependent of a body element (3). The striker is retained when the bonnet is in a closed state by the lock. A relative position of the valve bridge and the striker is adjustable according to the direction of an opening/closing axis (23) and with respect to the part (11) by a nut (150) and a screw (15) that are accessible after the assembly of a vehicle from the vehicle`s exterior (5).