JPH0623738Y2 - Engine recoil starter mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a recoil starter attaching device for an engine, which allows an optional recoil starter to be attached.

(Prior Art) In a saddle-type four-wheeled vehicle or the like, even if a starter motor is provided for starting the engine, a manual starter is provided in case of an unforeseen situation when there are many mountain forests in the usage range. Is required, and the optional recoil starter can be installed.

FIG. 2 shows an example of such a conventional recoil starter attaching device, in which the recoil starter is attached above the center line and the recoil starter is attached below the center line.

A magneto cover 2 is attached to one side of the crankcase 1 to form a magneto chamber 3, and a crankshaft 4 protruding into the magneto chamber 3 is fixed with a taper-fitted rotor 5 fixed thereto.
The magnet is assembled by the stator 6 attached to the inner surface of the magnet cover 2.

Fastening bolts 7 are fastened to the end surface of the crankshaft 4, and the rotor 5 is fastened by sandwiching the attachment piece 8.

The end face of the attachment piece 8 is exposed on the outer surface of the magneto cover 2,
An oil seal 9 is interposed between the outer periphery near the end face and the through hole end of the magneto cover 2. This attachment piece 8
Attach the recoil cup 10 to the end surface of the
Thus, the recoil starter 12 is attached to the outer surface of the magneto cover 2.
Attach and engage recoil cup 10.

Therefore, if the recoil starter 12 is unnecessary, the mounting screw 11 and the recoil cup 10 are removed.

However, if the oil seal 9 is placed in this manner, the oil seal 9 is always exposed to the outside, so that dust and water may easily contact the lip of the oil seal and may be damaged. Further, there is a problem that the rotating attachment piece 8 is exposed to the outside. For this reason, a cover for concealing these is required, and the cover is required to have sealing property and strength.

(Problems to be Solved by the Invention) As described above, in the conventional recoil starter attaching device,
In view of the problem that the rotating attachment piece and the oil seal are exposed to the outside of the magneto cover when the recoil starter is not necessary, this invention uses the same parts without using any related parts when the recoil starter is unnecessary. It is an object of the present invention to provide an engine recoil starter attaching device capable of strictly sealing a magneto chamber by using the above crankshaft.

[Constitution of device]

(Means for Solving the Problems) In accordance with the above object, the recoil starter attaching device for an engine according to the present invention has a crank cover which is attached to a side surface of a crankcase with a stator and which projects into the magnet cover. In the case where the rotor is fixed to the shaft to form a magneto, the rotor is fixed by the taper fitting and the rotor tightening nut screwed to the crankshaft, and the extension shaft that further extends the crankshaft is extended from the magnet cover. It is provided with a screw and a spline formed at the tip of the rotor so that the spacer contacting the rotor fastening nut and the recoil cup fitted to the spline are fastened together by a fastening nut screwed to the screw, and fixed. The outer circumference of the spacer is axially sealed by an oil seal fitted to the magneto cover, and When the recoil starter that engages with the recoil cup is attached to the outer surface of the magneto cover and the recoil starter is not required, the oil seal fitting of the magnet cover is removed except for the above-mentioned tightening nut, recoil cup, spacer and oil seal. The plug is press-fitted into the hole to close the crankshaft end.

(Operation) With this configuration, the magnet rotor is independently fixed to the crankshaft by the rotor fastening nut. The recoil cup is fixed to the crankshaft at the tip of the recoil cup by another fastening nut via a spacer. The oil seal is installed between the spacer and the magneto cover.If the recoil starter is not required, the recoil cup can be assembled without the oil seal and spacer without affecting the rotor, and the crankshaft end can be lightened. Become.

By fitting the plug into the oil seal fitting hole, the inside of the magneto cover can be sealed, and there is no fear of trouble due to intrusion of dust or water.

(Embodiment) FIG. 1 shows an embodiment of the present invention, in which a recoil starter is attached above the center line and a configuration without a recoil starter is shown below.

The magneto chamber 14 is attached to one side of the crankcase 13 to form a magneto chamber 15.
Rotor 1 taper-fitted to crankshaft 16 protruding inward
7 is fixed by a rotor fastening nut 18 and is combined with a stator 19 attached to the magneto cover 14 to form a magneto.

The crankshaft 16 is further extended to form an extension shaft 16a, which protrudes to the outside of the magneto cover 14 and has a screw 2 at the tip.
0, the spline 21 is formed at the adjacent position.
First, a spacer 22 is pivotally supported on the extension shaft 16a and is applied to the outer surface of the rotor fastening nut 18. At this time, the outer periphery of the spacer 22 is sealed by the oil seal 24 fitted in the oil seal fitting hole 23 of the magneto cover 14. Next, the recoil cup 25 is pivotally supported on the spline 21, and the recoil cup 25 and the spacer 22 are fastened together and fixed by an attachment nut 26 screwed to the screw 20.

In this way, the recoil starter 28 is attached to the outer surface of the magneto cover 14 by the fastening bolts 27 and engaged with the recoil cup 25, and the recoil starter device is assembled to the crankshaft 16.

When the recoil starter 28 is not needed, the oil seal fitting hole 23 is not provided with the tightening nut 26, the recoil cup 25, the spacer 22 and the oil seal 24.
A cup-shaped plug 29 is press-fitted into the magnet to seal the magneto chamber 15. Reference numeral 30 is a cover for adjusting the appearance.

Thus, the rotor 17 is independently fixed by the rotor tightening nut 18, and the spacer 2 on the crankshaft extension shaft 16a is
2. Since the oil seal 24 and the recoil cup 25 are fixed by separate tightening nuts 26, they can be freely attached and detached regardless of the rotor, and when the recoil starter 28 is unnecessary, the crankshaft becomes lighter. At the same time, the magneto chamber 15 can be sealed by closing the plug 29 using the oil seal fitting hole 23.

[Effect of device]

As described above, the engine recoil starter attaching device according to the present invention is such that the rotor is independently fixed to the crankshaft by the rotor fastening nut, and the recoil is mounted on the extension shaft of the crankshaft by the separate fastening nut via the spacer. The cup is fixed, an oil seal is interposed between the spacer and the magneto cover, and the recoil starter that engages with the recoil cup can be attached to the outer surface of the magneto cover.
For those that do not require a recoil starter, without using a tightening nut, recoil cup, spacer, or oil seal,
With a plug that can be press-fitted into the oil seal fitting hole, a common crankshaft can be used to select whether or not a recoil starter is required. Since it is only a plug, it has a low cost, and there is no possibility of causing trouble because there is no oil seal.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a recoil starter attaching device according to an embodiment of the present invention, and FIG. 2 is a vertical sectional view of a conventional recoil starter attaching device. 13 ... Crank case, 14 ... Magnet cover, 15 ...
Magnet chamber, 16 ... Crank shaft, 16a ... Extension shaft, 17
... rotor, 18 ... rotor tightening nut, 19 ... stator,
20 ... Screw, 21 ... Spline, 22 ... Spacer, 23
... oil seal fitting hole, 24 ... oil seal, 25 ... recoil cup, 26 ... tightening nut, 28 ... recoil starter.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A magnet cover comprising a stator and a stator attached to a side surface of a crankcase, wherein a rotor is fixed to a crankshaft projecting into the magnet cover to form a magnet. The rotor is fixed by a rotor tightening nut screwed to the shaft, and an extension shaft, which is a further extension of the crankshaft, is projected from the magneto cover, and a screw and a spline are formed at the tip of the extension shaft. The contacting spacer and the recoil cup fitted to the spline are fixed together by tightening with the tightening nut screwed into the screw, and the outer circumference of the spacer is axially sealed by the oil seal fitted to the magneto cover. A recoil starter to be engaged is attached to the outer surface of the magneto cover. When the recoil starter is not required, it is characterized in that the above-mentioned tightening nut, recoil cup, spacer and oil seal are removed, and the crankshaft end is closed by a plug press-fitted into the oil seal fitting hole of the magneto cover. Engine recoil starter attachment device.