Throttle Regulator Integrating Switch and Fuel Cock
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Solution Overview
Problem
Conventional throttle regulators for vibration compaction machines are difficult to operate and maintain due to separate locations of engine stop switches and fuel cocks, which can lead to fuel leaks and malfunctions, especially when contaminated with dust or foreign matter.
Innovation Solution
The throttle regulator integrates the engine stop switch and fuel open-close cock within the throttle lever case, using a partially toothless driven gear and drive gear for actuation, allowing for adequate operation and maintenance, and preventing independent rotation to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the engine stop switch and fuel cock are provided separately from the throttle lever, then the throttle mechanism can be simplified, but the operator cannot easily manipulate all controls together leading to inadequate fuel leak prevention
Solution Approach 1:
The patent combines the engine stop switch and fuel cock into an integrated assembly with the throttle lever. All three controls (throttle lever, engine stop switch, and fuel cock) are positioned together on the handle, allowing the operator to manipulate them simultaneously with one hand. This merging resolves the contradiction by maintaining operational simplicity while enabling effective fuel leak prevention through coordinated control.
2Ease of operation
If the units are provided on the surface of the fuel tank, then they can be easily accessed, but the surface is contaminated with dust causing malfunction
Solution Approach 1:
The patent extracts the engine stop switch and fuel cock from the fuel tank surface and relocates them to the throttle lever assembly on the handle. This separation removes the controls from the dust-prone fuel tank environment while maintaining ease of access on the handle. The throttle lever case provides a protected mounting location that is accessible to the operator but isolated from fuel tank contamination.
3Device complexity
If piston-type valves with spring force are used, then the valve mechanism can be simple, but fuel adhesion creates resinous substances causing malfunction over time
Solution Approach 1:
The patent replaces the piston-type valve with a球阀 (ball valve) mechanism. The ball valve uses a spherical element with flow channels that rotates to open or close the fuel passage, eliminating the piston and spring force dependency. This substitution improves reliability by preventing fuel adhesion and resinous substance formation that occur with piston-type valves, while maintaining simple mechanical operation through rotational movement.
Data Source
AI summary
An engine stop switch and a fuel open-close lock are accommodated in a throttle lever case so that they can be easily disassembled, and the engine stop switch is turned on and off and the fuel open-close cock is opened and closed adequately by the actuation of a rotary valve in response to the turning of a lever. An engine stop switch and a fuel open-close lock are integrally incorporated in a throttle lever case, a partially toothless driven gear is intermittently rotated via a partially toothless drive gear rotated by a lever, and the intermittent rotation of the partially toothless driven gear turns on/off the engine stop switch and opens/closes the fuel open/close cock.