JPS5823957Y2 - Governor shaft mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a governor shaft mounting structure that prevents incorrect installation of the governor shaft.

Conventionally, the governor shaft has generally been installed from the outside of the crankcase, so the governor shaft may be installed in the wrong position on the governor weight side, and this incorrect installation can cause engine malfunction and component damage.

The present invention was developed in view of the above points, and by providing a convex portion on the outer periphery of the governor shaft and forming a notch for engaging this convex portion on the end face of the bearing boss on the governor shaft insertion side, the governor shaft The installation is carried out by inserting the protrusion of the governor shaft into the notch of the bearing boss.
A governor shaft mounting structure that allows for easy regulation of the correct position at all times without making a mistake in the mounting position of the governor shaft on the governor weight side, and that also prevents incorrect mounting of the governor shaft and allows regulation of the swing angle. The purpose is to provide

Next, embodiments of the present invention will be described with reference to the drawings.

The governor shaft 1 has a protrusion 2 for preventing removal and a protrusion 3 for engagement on the outer peripheral surface.

On the other hand, the governor shaft bearing boss 4 has a notch 5 formed on the end surface on the shaft insertion side, and when the governor shaft is installed, the engagement projection 3 of the shaft 1 is inserted into the governor shaft 1 to the governor weight 6 side. In addition to regulating the position, the swing angle of the governor shaft 1 is also limited.

The washer 7 is inserted into the governor shaft 1 and is cut out at a predetermined angle in the direction of the swinging force of the governor shaft 1, as shown in FIG. 4, so that the swing angle of the governor shaft 1 is regulated. A recess 9 is installed between the protrusion 2 for preventing removal and the end face of the bearing boss 3, and is fitted into the shaft insertion hole 8 with the protrusion 3 of the governor shaft 1.
is formed.

This washer I is fitted onto the governor shaft and inserted into the bearing boss end face from the inside of the crankcase toward the outside.

The governor shaft 1 has a tarip 14 that protrudes by a predetermined width from the end of the bearing boss 4 on the governor lever 10 side.
After this assembly, the governor lever 1
0 is fixed to the protrusion.

In the figure, reference numeral 11 indicates a crankcase, 12 a governor sleeve, and 13 a crankshaft.

Therefore, since the present invention is configured to attach the convex portion 3 of the governor shaft 1 by engaging it in the notch 5 of the bearing boss 4 as described above, if the governor weight 6 side of the governor shaft 1 If the mounting position is incorrect, the engaging convex portion 3 of the governor shaft 1 will come into contact with the bearing boss 4, and the required amount of protrusion of the shaft 1 on the governor lever 10 side will not be obtained. This prevents the governor lever 10 from being connected and incorrectly assembled. In such a case, rotate the governor shaft 1 and insert the engagement convex 3 into the notch 5 of the bearing boss 4. Assembling is carried out by entering the machine.

Further, in the present invention, when the governor shaft 1 and the governor lever 10 are connected, the engagement convex part of the governor shaft 1 engages in the notch part 5 of the bearing boss 4 and its position is regulated. The governor shaft 1 does not rotate and the set angle does not shift when the cylinder case is assembled.

What is shown in FIG. 6 is a second embodiment of the present invention.

In this embodiment, the engagement projection 3 is divided into two parts, and a washer 7 is brought into contact with the governor weight side projection 14' to prevent removal.

As described above, the present invention has a convex portion on the outer periphery of the governor shaft, and a notch for engaging the convex portion is formed on the end face of the bearing boss on the insertion side of the governor shaft. The position of the shaft toward the governor weight side can be controlled by simply inserting it into the notch of the bearing boss.
Therefore, incorrect installation can be easily prevented, and furthermore, the swing angle of the governor shaft can be regulated after installation.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of main parts showing the first embodiment of the present invention, Fig. 2 is a schematic diagram showing the positional relationship between the governor shaft and the governor weight side, and Fig. 3 is a diagram showing the convex part of the governor shaft and the bearing boss. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a front view of the washer used in the present invention, and FIG.
The figure is a plan view showing a second embodiment of the present invention. In the figure, reference numeral 1 indicates a governor shaft, 3 indicates an engaging projection, 4 indicates a bearing boss, and 5 indicates a notch.

Claims (1)

[Scope of utility model registration request] In a governor shaft mounting structure in which a governor shaft is rotatably inserted into a governor shaft insertion bearing of a crankcase and a governor lever is supported at an outer end of the shaft, at least the position of the governor shaft in the axial direction is restricted. A first protrusion and a second protrusion that restricts the rotation of the shaft in the axial circumferential direction are formed, and a groove is formed in the shaft insertion bearing that restricts the rotation of the second protrusion to a predetermined rotation or less. A governor shaft mounting structure characterized in that the outer end surface of the governor shaft is supported by a governor lever and is mounted on the bearing.