Carburetor Anti-Tamper Wedge Mechanism for Garden Engines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing carburetors for garden machinery engines with anti-flow tampering functions can be improperly adjusted by users with common tools, leading to engine malfunction or damage, resulting in unnecessary after-sales service.
Innovation Solution
The carburetor features special tool adjusting parts with micro wedge-shaped structures on the idle oil needle and flow adjusting nail, requiring a specialized tool for adjustments, preventing misuse and ensuring proper operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a common screwdriver is used to adjust the carburetor flow adjusting nail, then the adjustment operation is simple and accessible, but the carburetor can be improperly adjusted leading to engine malfunction or damage
Solution Approach 1:
A special adjusting tool is introduced as an intermediary between the user and the carburetor adjustment mechanism. This tool features a wedge-shaped structure that precisely fits into the wedge-shaped groove on the flow adjusting needle, preventing direct manipulation with common screwdrivers and ensuring only proper adjustment techniques are used
Solution Approach 2:
The flow adjusting needle and idle oil needle are designed with asymmetric wedge-shaped grooves that do not match common screwdriver shapes. This asymmetric design ensures that only the specially designed adjusting tool with the corresponding wedge-shaped fitting can properly engage and adjust these components, preventing improper adjustments
2Reliability
If the carburetor structure is modified to prevent improper adjustment, then the reliability is improved, but the device complexity increases due to special tool requirements
Solution Approach 1:
The adjustment system is segmented into two distinct components: the carburetor body with its standard structure, and the specially designed adjusting tool with the wedge-shaped fitting. This segmentation allows the carburetor itself to remain relatively simple while the complexity is isolated to the external adjusting tool, minimizing the impact on overall device complexity
3Reliability
If a special tool with wedge-shaped structure is used for adjustment, then improper adjustment is prevented, but the ease of operation decreases due to tool specificity
Solution Approach 1:
The special adjusting tool is pre-configured with the exact wedge-shaped structure needed to match the groove on the flow adjusting needle. This preliminary design ensures that when the tool is used, the geometric constraint automatically guides the adjustment action to be proper and accurate, eliminating the need for user judgment or skill in performing the adjustment correctly
Data Source
AI summary
The present utility model relates to a carburetor with adjusting tool for garden machinery engine with anti-flow tampering function. The carburetor is comprised of a carburetor body, an idle oil needle, an oil needle spring, a plunger nut, a flow adjusting nail, a flow nail spring, a gasket and a sealing ring, wherein the idle oil needle and the flow adjusting nail are both provided with a special tool adjusting part, the special tool adjusting part is comprised of a section of cylinder, and the surface of the cylinder is provided with a micro wedge-shaped adjusting structure in the axial direction. In the present utility model, the flow and opening of the carburetor can only be adjusted using a special tool by changing the structure of the idle oil needle and the flow adjusting nail, which can effectively avoid the problem that the state of the carburetor is adjusted by users by using a common screwdriver, which causes the engine to fail to work normally or even be damaged due to improper adjustment, thus resulting in unnecessary after-sales service work, guaranteeing that the state as delivered is not easy to be freely adjusted by users, thus effectively ensuring the low emission value.