JPS5943498Y2 - Internal combustion engine with starting pulley - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an internal combustion engine with a starting pulley in which a cover is fixedly attached to the starting pulley.

Conventionally, in an internal combustion engine with a starting pulley in which a rope is wound around a metal starting pulley to turn the crankshaft four times, the pulley is attached to the outside of the flywheel during starting, and is further attached to the outside of the cooling tact member of the internal combustion engine. It stands out.

This starting pulley naturally rotates during engine operation, and it is extremely dangerous for such rotating parts to protrude outside the internal combustion engine.

Therefore, the present invention has been devised to prevent all of the above-mentioned dangers.The present invention provides a starting boot IJ with a starting pulley for use during operation of an internal combustion engine. The risk prevention funds are intended for all purposes.

That is, the present invention provides a pulley cover metal that can cover at least the outer periphery of the rigid starting pulley and that can be retracted to the flywheel side when starting the internal combustion engine in an internal combustion engine that has a fixed pulley on the outside of the flywheel. At the same time, the structure can be improved by providing a position fixing means 4 which can fix the pulley cover at a certain cover position and retracted position.

Examples of the present invention with reference to all the drawings below? explain.

Embodiment 1 FIG. 1 shows a starting pulley 4 attached to the outside of a flywheel 1 in an internal combustion engine with a starting pulley according to a first embodiment of the present invention.

A cooling fan 2 is integrally formed on the outer periphery of the flywheel 1, and the flywheel 1 is fixedly attached to the crankshaft 3, and the flywheel 1 is also a cooling fan 2 fixedly attached to the main body of the internal combustion engine. Covered by duct 5.

Therefore, in this embodiment 1, a position fixing means 4 is provided in the screw member 5A of the cooling duct 5, and the position fixing means 4 is screwed into the cylindrical pulley cover 6h by a threaded portion formed on the outer periphery of the pulley cover 6h. 6 Move to the outside of the flywheel 1 as shown in the figure and peel it off to cover the entire outer circumference of the starting pulley 4. When starting the engine, remove the pulley cover 64 from the flywheel 1 side at position 1 shown by the dotted line in the direction of arrow A. I'm trying to force it to move.

Note that 7 in the figure indicates an air intake hole.

Next, the starting pulley 4 attached to the outside of the flywheel 1 in Embodiment 2 of the present invention shown in FIG. However, the difference is that position fixing means are provided in the return spring material 8 interposed between the cooling duct 5 and the pulley cover 6, the pulley cover stop device 10, and the stopper pin 11, as shown in FIG. indicates the state during engine operation, and the pulley cover 6 is pushed out to the outside of the flywheel 1 by the spring force of the return spring material 8, and the starting boot!
J 41f: Covered, and is prevented from moving further outward by a stopper pin shown at 11.

When starting the engine, while the pulley shift bar 64 is being returned, it is pushed toward the flywheel 1 side by the force of the spring mass of the spring material 8, and then
It is held in place by a pulley cover stop device 10, and when the engine is running again, this pulley cover stop device 10 is removed and the pulley cover 6 is returned from the field spring material 8Vc.
protrudes outward.

In addition, as a means for enabling the flywheel 111IJK to be retracted at the time of starting the internal combustion engine, the pulley cover 6 which is attached to the cover field of the starting pulley 4 in the present invention is the manual type of the above embodiments 1 and 2. , or any other automatic means will be effective.

According to the present invention, the pulley cover 4 is provided which can cover at least the outer circumference of the starting pulley and which can be retracted to the flywheel side when starting the internal combustion engine. This allows the starting pulley to be rotated easily.
When the engine is running, the starting pulley 4, which is a rotating part that protrudes from the engine, can be covered with a pulley cover, so the driver and workers can be protected from danger. Much can be done by completely improving the safety of internal combustion engines.

Since the pulley cover 4 is provided with a position fixing means that can be fixed at the starting pulley cover position or the retracted position of the flywheel measurement, the pulley cover 4 that has been moved to a predetermined position can be securely fixed at that position. The desired operations can be carried out with complete efficiency.

Further, since it is only necessary to provide the movable pulley cover 4 that covers the outer circumference of the starting pulley, the structure is simple, easy to handle, and advantageous in terms of cost.

The present invention can be effectively applied mainly to air-cooled rope-start internal combustion engines.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the essential parts around the starting pulley of an internal combustion engine with a starting burr according to the first embodiment of the present invention, and Fig. 2 is a starting internal combustion engine with a starting pulley according to the second embodiment of the present invention. FIG. 3 is a side sectional view of the main parts around the pulley.

Claims (1)

[Scope of utility model registration request] A pulley cover 4 is provided for internal combustion engines having a starting boot on the outside of the flywheel, which can cover at least the outer circumference of the starting pulley and which can be retracted to the flywheel side when starting the internal combustion engine. An internal combustion engine with a starting pulley is further provided with a position fixing means 4 capable of fixing the pulley cover 4 in the cover position and the retracted position.