JPS5918273A - Driving device for distributor - Google Patents

Abstract

PURPOSE:To prevent chips from entering into a clearance between a shaft and a collar upon working by a method wherein the engaging part of the collar with the shaft is formed into a cylindrical shape, in the device, in which the shaft of the distributor is connected to the driving shaft of an engine through the serration of the collar. CONSTITUTION:The distributor 1 is mounted on the main frame 5 of the engine and the shaft 2 thereof is connected to the driving shaft 6 of the engine through the engagement between the serration 71 of the collar 7 and the serration 61 of the driving shaft 6. In this case, the cylindrical part 72 having an inner diameter D2, somewhat larger than the outer diameter of the shaft 2, is formed at one side of the inner wall of the collar 7 attached to the end of the shaft 2 by a roll pin 8. According to this method, the chips are prevented from entering into the clearance between the serration 71 and the shaft 2 when a hole, for fitting the collar 7 to the shaft 2 and entering the roll pin 8 by pressure, is machined.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a driving collar for a power distributor, and more particularly to a collar suitable for a driving method in which a collar having serrations formed on the inner wall is fixed to a shaft of a power distributor using a roll pin.

Conventional collars will be explained based on FIGS. 1 to 3.

The power distributor 1 has a shaft 2 within the main body that rotates in synchronization with the rotation of the engine. This shaft 2 is supported within a housing 3 of the power distributor 1 via a bearing 4 .

Such a power distributor 1 is mounted on an engine body 5, and is arranged so that one end surface of a drive shaft 6 of the engine and the protruding end surface of the shaft 2 of the power distributor 1 face each other. Between the shaft 2 and the drive shaft 6, there are serrations 71 formed on the inner wall of the collar 7 attached to the end of the shaft 2 by a roll pin 8, and serrations 61 formed integrally with the drive shaft 6 at the end of the drive shaft 6. By fitting them together, they are connected so that rotation can be transmitted.

In the collar drive system with the above configuration, the shaft 2
Since it is necessary to fix the collar 7 so that the eccentricity between the collar 7 and the serrations 71 is small, conventionally the serrations 71 have been formed to extend the entire length of the collar 7 as shown in FIG. However, since the press-fit hole for the roll pin 8 that fixes the collar 7 to the shaft 2 is machined by integrally machining the collar 7 and the shaft 2, chips from machining can enter the gap between the serrations 71 and the shaft 2, resulting in cutting. This method has the disadvantage that powder removal work is required, resulting in poor work efficiency.

An object of the present invention is to provide a collar in which chips for press-fitting a roll pin during work do not enter the gap between the serrations of the shaft and the collar.

In the present invention, the shaft fitting part of the collar that forms the hole for press-fitting the roll pin is made into a cylindrical shape, so that the cutting chips during the operation of the hole for press-fitting the roll pin do not enter the gap between the serrations of the shaft and the collar. The idea is to do so.

Examples of the present invention will be described below.

FIG. 4 shows an embodiment of the invention.

In the figure, a serration 71 that fits with the serration 61 of the engine drive shaft 6 is formed on one side of the inner wall of the collar 7, and a cylindrical portion 72 having an inner diameter D2 slightly larger than the outer diameter of the shaft 2 of the power distributor 1 is formed on the other side. .

In the above structure, the collar 7 is fitted onto the shaft 2,
This is to prevent chips from entering the gap between the collar 7 and the shaft 2 when machining the hole into which the roll pin 8 for fixing the collar 7 is press-fitted.

Therefore, according to this embodiment, when machining the hole for fully press-fitting the roll pin, chips do not enter the gap between the collar and the shaft.

As explained above, according to the present invention, cutting chips during the drilling operation for press-fitting the roll pin do not enter the gap between the serrations of the shaft and the collar.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the main part showing the drive part of the power distributor, Fig. 2 is a cross-sectional view of the collar having serrations on the inner wall, and Fig. 3 is a cross-sectional view of the collar having serrations on the inner wall.
The figures are a right side view of FIG. 2, FIG. 4 is a sectional view of the collar according to the invention, and FIG. 5 is a right side view of FIG. 4.

Claims (1)

[Claims] 1. A shaft that rotates in synchronization with the rotation of the engine, a drive shaft that rotates by being transmitted with the rotation of the shaft, and an inner wall that fits so that one end of the shaft and one end of the drive shaft face each other. In the drive device for a power distributor, the collar is provided with serrations over its entire length, and the collar is fixed to the shaft with a pin, in which the fitting portion of the collar with the shaft is formed into a cylindrical shape. Distributor drive device featuring features.