Fuel input actuating device and fuel gas power tool with same

Abstract

The invention relates to a fuel input actuating device and a fuel gas power tool utilizing the same and belongs to the technical field of fuel gas power driving tools. The fuel input actuating device comprises a fuel chamber cover and a push plate which is in hinged support with the fuel chamber cover coaxially, the push plate is provided with lever arms, and one end of each of the lever arms is provided with a contact face linked with the upper end of a combustion chamber while the other end of the same is provided with a pushing plate. When the combustion chamber is at the upper extreme position, the pushing plates are at positions pressing a fuel storage tank, and a proportional valve is in a turned-up state; when the combustion is at the lower extreme position, the pushing plates are at the positions releasing the fuel storage tank, and the proportional valve is in a turned-off state. The fuel input actuating device has the advantages that unnecessary fuel gas releasing when the fuel chamber cover is opened is avoided, and actions of the pushing plates are not affected when the fuel chamber over is open, so that whether the fuel gas storage tank is normal or not can be observed by uncovering.

Description

technical field [0001] The invention relates to a fuel input actuator, and also relates to a gas powered tool using the fuel input actuator, which belongs to the technical field of gas powered tools. Background technique [0002] Gas power tools are commonly used tools in construction and decoration industries. The structure of such tools can be found in patent documents such as US4403722, 4483280, 4483473, 4483474, and its typical structure is as follows: figure 1 As shown, there is a gun-shaped casing 1, and a small internal combustion engine with a combustion chamber 8 is arranged inside it, and fuel is provided by a fuel storage tank 3 installed in a fuel chamber 2 . The fuel is usually liquefied hydrocarbon gas, such as propylene, propane, butane, etc. During work, the fuel storage tank 3 is loaded into the fuel chamber 2, and the fuel chamber cover 4 is closed. Touch the fuel input actuator 5 by pressing down the contact 7 to open the quantitative valve on the fuel s...

AI Technical Summary

Problems solved by technology

[0003] As far as the applicant knows, the currently known fuel input actuators 5 are integrated with the fuel chamber cover 4, and only when the fuel chamber cover 4 is closed can the actuator be triggered to fire and release the fuel. Therefore, there are the following disadvantages in use: 1) When the fuel storage tank is put into the fuel chamber cover and the fuel chamber cover is closed, the actuating device on the fuel chamber cover will inevitably be fired once to release the fuel, resulting in unnecessary waste; The actuation device cannot be touched, so it is impossible to observe the working condition of the fuel storage tank, making it difficult to analyze and solve the problem

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