JPS6026203Y2 - Attachment device for engine governor lever to governor shaft - Google Patents

Description

[Detailed description of the invention] The purpose of this invention is to improve the mounting device of the engine governor lever to the governor shaft, and to use a moving tool such as an impact wrench to mount the governor lever to the governor shaft with high precision. .

Conventionally, as shown in FIG.
2 has a groove 53 formed inward from its base end surface 52a, and above the groove 53 is a mounting hole 58 into which the governor shaft 59 is inserted.
The proximal end portion is formed into two sets of bifurcated pieces with the above-mentioned split groove as the center, and these bifurcated pieces have one bifurcated piece 54 of the same size as the other bifurcated piece 56; Equal bending strength.

Therefore, when clamping and fixing the governor lever to the governor shaft by tightening the nut screwed into the mounting port that is received and supported by the two-pronged piece, it is necessary to hold the governor lever to the fully open throttle side and to hold the governor shaft to the governor weight fully. The governor lever is adjusted and tightened after being rotated to the closed side.At this time, if you tighten it from the R direction with a moving tool such as an impact wrench, the governor lever will be tightened using the governor shaft as a fulcrum even though the split groove 53 is squeezed from both sides. This generates a rotational moment M, and the zero point adjustment of the governor lever that keeps the throttle fully open and the governor weight fully open becomes deviated.

Considering the current mass production system for engines, it is unthinkable to install the governor lever manually in terms of efficiency, and it has to be done mechanically with an impact wrench. The above problems always occur.

The present invention solves the above problems all at once by forming a split groove with a mounting hole inward from the base end surface of the base end of the governor lever, and connecting the base end with the split groove as the center. By setting the bending strength of one two-pronged piece to be weaker than the bending strength of the other two-pronged piece, one of the two-pronged pieces can be used even when adjusting and tightening the governor lever to the governor shaft. This buffers the acting force so that the lever bends toward the other side, thereby preventing the lever from rotating about the governor shaft.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a speed regulating device for a forced air-cooled vertical engine, FIG. 2 is a front view of a governor lever, and FIG. 3 is a left side view thereof.

This speed governor drives the governor fork 14 and the governor lever 1 to swing in the left direction by the thrust of the governor sleeve 13, which overcomes the tension of the governor spring 12 and retreats as the rotation speed of the engine 11 increases from the set rotation speed. Then, the throttle valve 18 interlocked with the governor lever 1 is swung in the valve closing direction via the rod 16 and the throttle lever 17, and the engine speed is decelerated to the set speed.

Further, as the engine speed decreases, the governor lug 1 is oscillated in the right direction T by the tension of the governor spring 12 that exceeds the thrust of the governor sleeve 13, and the throttle valve 1 is driven to swing in the right direction T.
8 in the valve opening direction to increase the engine speed to the set speed.

The set rotation speed can be freely changed within a certain range by swinging an accelerator lever 20 pivoted on a fixed plate 19 fixed to the engine 11 and changing the tension of the governor spring 12.

The governor lever 1 is formed by folding up a back plate 1b from below the front plate 1a and welding the upper end of the back plate 1b to the front plate 1a.

Reference numeral 1c denotes a reinforcing wall, which extends the side edge of the top plate 1a rearward.

A split groove 3 is formed from the base end surface 2a of the base end part 2 of the governor lever toward the inside thereof, and the base end part 2 is made into a bifurcated piece.

A mounting hole 8 for mounting the governor shaft 9 is formed in the deep part of the split groove 3, and the leg portion 5a of the mounting bolt 5 is received and supported by one of the forked pieces 4 on the side of the base end surface 2a from the mounting hole 8. , is loosely inserted into the bolt through hole 7 of the other bifurcated piece 6.

By tightening the other bifurcated piece 6 to the one bifurcated piece 4 side with the nut 10 screwed onto the leg 5a of the mounting bolt 5, the split 1 yellow 3 is contracted and both bifurcated pieces are attached to the governor shaft 9. Fix the situation.

Then, one bifurcated piece 4 centered on the attachment hole 8 is set smaller than the other bifurcated piece 6, so that the bending strength of the former 4 is made weaker than that of the latter 6.

In order to make this purpose more effective, one or more small notches 4a may be provided at the outer edge of the bifurcated piece 4, which has a weak bending strength, if necessary.

1d is a support hole for the governor spring 12, and 1e is a groove in which the rod 16 is hooked.

To explain the function of the governor lever described above, the governor lever 1 is manually rotated in the throttle fully open side S direction, the governor weight is moved downwards in the fully closed side, and then the governor lever 1 is tightened to the governor shaft 9. Yes, but
At this time, even if the mounting bolt 5 is tightened with an impact wrench from the 4 directions of the bifurcated piece, before the entire governor lever rotates to the left, the bifurcated piece 4, which has a weaker bending strength, will move in the 6 directions of the stronger bifurcated piece. The governor shaft 9 is bent slightly by contracting the groove 3.
Since it is clamped, the governor lever cannot be rotated.

Since the present invention has the above-described structure and operation, the governor lever can be tightened to the governor shaft with high precision without causing any deviation during adjustment.

Further, the governor lever has a simple structure and is easy to manufacture because it is only necessary to position the dividing groove and the mounting hole so that the bending strengths of both sides are varied and the rigidity of each is set unbalanced.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the speed regulating device for a forced air-cooled vertical engine, Fig. 2 is a front view of the governor lever, Fig. 3 is its left side view, and Fig. 4 is a front view of the speed regulator of a forced air-cooled vertical engine. The figure is a front view of essential parts of a conventional governor lever. 1... Governor lever, 2... Proximal end,
2a... Base end surface, 3... Division groove, 4, 6
...Bifurcated piece, 5...Mounting bolt, 5a
... Legs, 7 ... Bolt through holes, 8.
...Mounting hole, 9...Governor shaft, 10...
...Natsuto.

Claims (1)

[Scope of utility model registration request] A split groove 3 is formed inward from the base end surface 2a of the base end 2 of the engine governor lever 1, and the base end 2 is formed as forked pieces 4 and 6, and the inner part of the split groove 3 is Attachment hole 8 is formed.L1 At the proximal surface 2a side of the L1 attachment hole 8, the leg portion 5a of the attachment bolt 5 to be received and supported by one of the forked pieces 4 is loosely fitted into the bolt through hole 7 of the other forked piece 6. By fitting the waist mounting hole 8 into the governor shaft 9 and tightening the other fork 6 to the one fork 4 side with the nut 10 screwed onto the leg 5a of the mounting port 5, both The two-pronged piece is clamped and fixed to the governor shaft 9,
A device for attaching a governor lever of an engine to a governor shaft, characterized in that the bending strength of one bifurcated piece 4 about a mounting hole 8 is set to be weaker than the bending strength of the other bifurcated piece 6.