JPS5823965Y2 - Governor device for electric ignition engines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in a speed regulator in an electrically ignited engine.

Some speed regulators for electric ignition engines have a governor shaft pivotally supported on the crankcase cover, a carburetor fixed to the side wall of the cylinder, and the two linked together via a governor lever and governor rod.

When disassembling such an engine, the crankcase cover cannot be removed from the power output shaft unless the governor lever is removed from the governor shaft or the carburetor is removed from the cylinder, resulting in the following inconvenience.

In other words, when disassembling the engine using the scraper's method, it is difficult to accurately assemble the governor lever to the governor shaft in the same state as before disassembly, which may cause changes in engine torque, output, and other characteristics. was there.

Furthermore, in the latter case, each time the crankcase cover is disassembled, the carburetor and the air cleaner fixed thereto must be removed at the same time, which is time-consuming.

Furthermore, during disassembly or reassembly, the governor rod may be deformed, causing a change in engine characteristics as in the former case.

This invention solves the above-mentioned drawbacks of the conventional technology.The governor lever is fixed to the governor shaft that is pivotally supported on the crankcase cover. A slit cut from the upper peripheral end surface of the governor lever is connected to the engagement hole, and one side of the slit is a bent part, and when the bent part is bent, the governor It is characterized in that the rod crank-shaped portion is configured to be detachable from the engagement hole of the governor lever.

An embodiment of this invention will be described below based on the figures.

FIG. 1 is a side view of the engine, in which 1 is the engine, 2 is a crankcase, and 3 is a crankcase cover. This cover 3 is fixed to the opening of the crankcase 2 with bolts 4.

5 is an accelerator lever 16 is a governor lever, 7 is a governor shaft, 8 is a carburetor, 9 is a throttle lever provided on the carburetor 8, the accelerator lever 5 is attached to the crankcase 2, and the governor lever 6 is attached to a clamping bolt 10. The accelerator lever 5 and the lower end of the governor lever 6 are connected by a governor spring 11, and the upper end of the governor lever 6 and the throttle lever 9 are connected by a governor rod 12 and a spring 13.

One of the crank-shaped parts 12a and 12b formed at both ends of the governor rod 12 faces backward, and the other 12b faces backward.
is bent downward.

The governor shaft 7 is pivotally supported by penetrating the side wall of the crankcase cover 3, and a governor fork 14 is fixed to the inner part of the crank room of the same shaft 7, and this is connected to the end surface of the sleeve 16 of the governor device mounted on the camshaft 15. It is placed in contact with

Figures 2 and 3 show the governor lever 6 and governor rod 12.
This figure shows the details of the connection part between the governor lever 6 and the upper end of the governor lever 6. A slit 17 is formed in the upper end of the governor lever 6 in the vertical direction. 18, and an engaging hole 19 communicating with the slit 17, through which the crank-shaped portion 12a of the governor rod 12 is inserted, and the spring 13 is latched and connected.

An escape hole 20 is formed at the lower end of the slit 17 to prevent stress due to the reaction force from the governor rod 12 from concentrating on the end of the slit of the governor lever 6.

Further, the slit width W of the slit 17 is narrower than the rod diameter d so that the rod 12 comes into contact with the rod 12 when the rod 12 is locked in the engagement hole 19.

From the above structure, when disassembling the crankcase cover 3, first bend the bent portion 18 at the tip of the governor lever 6 in the direction of arrow C, as shown by the imaginary lines in FIGS. 2 and 3, and then open the engagement hole. 19 is opened, and from there, the crank-shaped portion 12a of the governor rod 12 is swung toward the hand cup side (in the direction of the arrow) with the crank-shaped portion 12b of the external force as the center of oscillation, and separated.

Next, by removing the governor spring 11 and spring 13, the connection between the governor lever 6 and the crankcase 2 side is dissociated, and the crankcase cover 11 fixing the lever 6 to the governor shaft 7 can be disassembled.

Thereby, the crankcase cover 3 can be freely removed without removing the carburetor 8 from the cylinder and without removing the governor lever 6 from the governor shaft 7.

Also, during assembly, the governor rod 12 should be engaged with the engagement hole 19 of the governor lever 6 in the reverse order of disassembly described above, and the bent portion 18 should be folded back to its original position. It is placed in contact with the wall and positioned accurately.

As is clear from the above description, in this invention, an engagement hole 19 is formed in the middle of a slit 17 cut from the upper peripheral end of the governor lever 6, and the governor rod 12 is inserted and connected to the engagement hole 19. and slit 17
One of the upper ends of the governor lever 6, which is divided into two parts, is made into a bent part 18, and when this is bent, it is possible to remove the governor rod 12 from the engagement hole 19, so that the crankcase cover 3
can be easily and easily disassembled.

Moreover, since the slit width W of the slit 17 is narrower than the rod diameter d, the governor rod 12 can be inserted into the engagement hole 19.
When engaged, the rod 12 does not shift in the vertical direction, and the governor rod can be engaged while being pressed against the engagement hole 19, so there is no play in the axial direction of the rod. Governor performance can be improved.

Furthermore, since the relief hole 20 is formed at the lower end of the slit 17, it is easy to bend the bent part, and there is no stress concentration at the lower end of the slit after the governor rod is assembled to the governor lever, increasing the durability of the governor lever. can be increased.

Further, since the governor shaft 7 and the governor lever 6 are connected to each other by 11, and the crankcase cover 3 can be disassembled, changes in the characteristics of the engine 1 such as torque and output can be prevented.

Further, since no additional parts are required to further improve the above-mentioned configuration, and the slit 17 is simply cut and formed, the manufacturing cost of the engine 1 does not increase.

[Brief explanation of drawings]

Figure 1 is a side view of an air-cooled engine to which this invention is applied, Figure 2 is an enlarged view of section A in Figure 1, and Figure 3 is a view taken in the direction of arrow B in Figure 2. Case cover, 6...Curved governor lever, 7...Governor shaft, 12...Bent governor rod, 12a...Crank-shaped part of 12, 17.
Curve/slit, 18...Bending part, 19/curve-
a matching hole.

Claims (1)

[Scope of utility model registration request] A governor lever 6 is fixed to a governor shaft 7 pivotally supported by a crankcase cover 3, and an engagement hole 19 for a governor rod 12 and an escape hole 20 are vertically provided in the upper end of the governor lever 6. A slit 17 that passes through the engagement hole 19 and continues to the escape hole 20 is formed by cutting, and the slit width W of this slit 17 is formed to be narrower than the governor rod diameter d, and the engagement hole 19 is located in the middle of the slit 17. The crank-shaped portion 12a at the end of the governor rod 12 is fitted and engaged, and one side of the governor lever 6 divided by the slit 17 is used as a bent portion 18, and when the bent portion 18 is bent, the governor rod 12 is bent. A governor device for an electric ignition engine in which a crank-shaped portion 12a is configured to be detachable from an engagement hole 19 of a governor lever 6.