A hand starter for an internal combustion engine

Abstract

The invention relates to an internal combustion engine hand-cranking starter. The internal combustion engine hand-cranking starter comprises an outer shell, an input shaft and starting jaws. The starting jaws are in transmission connection with the input shaft. The input shaft is in transmission connection with a center shaft after being accelerated through a planetary gear assembly; the center shaft is connected with the starting jaws through an engaging and disengaging mechanism; the engaging and disengaging mechanism comprises a rotary disc and a bottom cover plate which is arranged on one side of the rotary disc in a covering mode; the center shaft sequentially penetrates through the bottom cover plate and the rotary disc; the center shaft and the bottom cover plate are arranged in a spaced mode; the center shaft is synchronously and rotationally connected with the rotary disc; more than one starting jaw groove which communicates with the edge of the rotary disc is formed in the surface of the side, close to the planetary gear assembly, of the rotary disc, and the starting jaw grooves are circumferentially distributed in the surface of the rotary disc; and the starting jaws are disposed in the starting jaw grooves correspondingly and oppositely open on the outside of the rotary disc or oppositely close along with the rotation of the rotary disc. According to the internal combustion engine hand-cranking starter, the whole structure of a traditional starter is improved, so that starting is achieved with much less effort, the sealing performance is better and the engaging and disengaging functions are achieved on the basis of no change of the size.

Description

technical field [0001] The invention relates to a starter for an internal combustion engine, in particular to a hand-operated starter. Background technique [0002] The internal combustion engine needs a set of starting mechanism to enter the running state before working. Usually, the starting methods include electric starting and mechanical starting. Although electric starting saves time and effort and is convenient to use, due to the seasonal characteristics of agricultural machinery, if the battery is not replaced in time Maintenance is easy to cause failure, so it is more convenient to rely on mechanical starting in the field of agricultural machinery at present. Existing starters mainly include hand-operated or rope-drawn starters, but there are still such problems. The starters in the prior art are relatively laborious to start, and the starter disk needs to reach a certain speed to achieve rotation, especially in winter. It is more troublesome to start at low tempera...

AI Technical Summary

Problems solved by technology

[0002] The internal combustion engine needs a set of starting mechanism to enter the running state before working. Usually, the starting methods include electric starting and mechanical starting. Although electric starting saves time and effort and is convenient to use, due to the seasonal characteristics of agricultural machinery, if the battery is not replaced in time Maintenance is easy to cause failure, so it is more convenient to rely on mechanical start-up in the field of agricultural machinery

Existing starters mainly include hand-operated or rope-drawn starters, but there are still such problems. The starters in the prior art are relatively laborious to start, and the starter disk needs to reach a certain speed to achieve rotation, especially in winter. It is more troublesome to start at low temperature. This operation itself is already very strenuous for men, not to mention that many male labor force go out to work, and most of the old and weak women who work at home are even more strenuous.

In addition, many starters are not equipped with a clutch mechanism. Once the internal combustion engine is started, it will not be disengaged in time, causing reverse rotation and causing certain dangers to the operator.

[0003] In order to solve the problem of strenuous effort, many coil spring starters have appeared on the market. First, the energy is stored and activated through the coil spring with a small force, and then released. However, the moment the coil spring is activated and released, the impact force is relatively large. Insufficient safety can also easily affect the life of the internal combustion engine

[0004] In order to overcome the above two problems, many starters have adjusted their structures, but there will be problems in installation, that is, they cannot directly replace the existing starters, and they need to be installed with other auxiliary accessories, which is very inconvenient

Moreover, the existing starter still has the problem of poor sealing performance, and rainwater, dust and mud, etc. will affect the overall performance

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