On-off control mechanism of hand-held working machine

Abstract

The invention discloses a clutch operating device of a hand-held working machine, wherein two ends of clutch alachlor are connected with the furcal arm of the clutch and the operating grip, the operating grip is arranged on the handgrip pipe by the hand handle seat, the intermediate between the furcal arm of the clutch and the working machine is equipped with back-moving spring, the force of the spring is different from the clutch alachlor, the clutch keeps the off-state under the force of the spring force. The invention achieves a normal open operation mold by equipping the spring, which improves the safe property of the machine that the clutch is off automatically and the machine stops at once when the operator is off-control owing to the accident, and is convenience to start the motor without breaking off the clutch like the traditional mold. The invention also has the low cost and the rare part, which doesn't need the transformation of the motor and less transformation of the machine.

Description

technical field [0001] The invention relates to a clutch control mechanism, in particular to a clutch control mechanism of an agricultural walk-behind working machine. The clutch control mechanism can keep the clutch in a normally open state. Background technique [0002] The purpose of the clutch operating mechanism is to control the disconnection or connection of the clutch as required. At present, the working principle of the clutches of commonly used machines, such as miniature cultivators and motorcycles, is normally on, that is, normally closed. output at one end. And when the friction plates of the clutch were subjected to external force, the clutch was disconnected, thus cutting off the power output and making the working machine stop working. [0003] For walk-behind working machines (walk-behind working machines are mostly used in the agricultural field, such as miniature cultivators, seeders and harvesters, etc.), the operator holds the handle pipe with both han...

AI Technical Summary

Problems solved by technology

In order to obtain a clutch with a normally open working mode, those skilled in the art have made many improvements on the clutch and paid a lot of effort, but the results are not satisfactory.

This is because the clutch itself is a precision-working part, installed inside the machine body, with high machining accuracy, and changes to a certain part of it often involve changes in related parts, requiring reprocessing and re-opening of the mold. Due to the limited space, the modification of the clutch (especially the volume) will be greatly restricted. As a result, the cost of the whole machine will inevitably be greatly increased. Therefore, even if the clutch is normally open through modification, it is difficult to be popularized due to cost reasons.

So far, have not found an ideal and feasible way to solve the above problems

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