JPS5924835Y2 - Internal combustion engine speed governor - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a speed governor for an internal combustion engine.

An example of a conventional speed governor for a spark ignition internal combustion engine is shown in FIG. 1, and a cross section taken along the line A--A in FIG. 1 is shown in FIG.

In the figure, reference numeral 1 denotes an operating lever connected to a throttle valve (not shown), which is rotatable about a shaft 2 of the engine body as a fulcrum.

Reference numeral 3 denotes an operating table, which is fixed between a boss 4 of the engine body and a large diameter part of a bolt 5, and is positioned by loosely fitting a positioning hole (not shown) into a pin 6 fixed to the engine. .

The operating lever 7 is loosely fitted into the large diameter portion of the bolt 5, and
A distance pipe 8 and an operating table spring 9 are attached to a bolt 5 with a washer 10 and a screw 11.

One end of the operating platform spring 9 is locked to the pin 6, and the other end is locked to the operating lever 7, so as to oppose clockwise rotation of the operating lever 7.

Reference numeral 12 denotes a cable whose one end is locked to the end 7a of the operating lever 7, and whose other end is connected to an operating device (not shown) via the hook 3a of the operating console 3.

Reference numeral 13 is an adjustment screw for adjusting the low rotation speed.

The adjusting screw 14 and the governor spring 15 are adapted to adjust the high rotational speed.

Reference numeral 16 denotes an adjustment plate held between the distance pipe 8 and the washer 10, which is composed of a required number of adjustment plates.

The above speed governor has the following drawbacks.

Since the direction in which the cable 12 is pulled differs depending on how the engine is used, it is necessary to prepare a control panel, a control lever, etc. each time, and the increase in the number of parts increases costs and makes handling complicated.

Further, during assembly, it is necessary to assemble the members 3, 7, 8, 9, 16, 10, and 11 on the boss 4 and bolt 5 in the order of individual parts, which increases the number of assembly steps.

The purpose of the present invention is to provide a speed governor that eliminates the above-mentioned drawbacks, and its features include an operating lever connected to a throttle valve and provided with a plurality of operating cable attachment parts, and An operating cable that is removably attached to the mounting part of the lever, and a mounting hole that coaxially supports the operating lever rotatably via a torsion bar, and into which the mounting holes 1 to 1 for attaching to the engine body are inserted. a plurality of control consoles are provided at equal intervals on a circumference concentric with the axis of the operating lever, and are mounted on the engine body so as to be rotatable about the axis in response to the pulling direction of the operating cable; This means that it is equipped with the following.

In addition, the operation console, operation lever, etc. can be assembled as one set of operation console, and can be attached to the machine using only one bolt.

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

3 is an explanatory diagram showing one embodiment of the present invention corresponding to FIG. 1, FIG. 4 is a view in the direction of arrow B in FIG. 3, FIG. 5 is a view in the direction of arrow C in FIG. The figure is a view taken along arrow D in FIG.

The differences from the conventional one will be explained.

Reference numeral 20 denotes an operating table, which is integrated with a pin 21 by welding or the like, and has holes 22 (numerals 22a to 22f) provided on the same circumference at the same pitch (in this embodiment, 6 holes at 60° intervals). It is positioned by a bolt 24 on a boss 23 of the engine body.

The head 21a of the pin 21 has a cylindrical shape, and is fitted into a hole 26 formed in the boss 25 of the engine body, and is inserted into the operation console 21.
0 is the center of rotation.

A spacer 27 is provided between the operating lever 28 and the operating table 200.

Note that, unlike in FIG. 4, the spacer 27 may of course be integrated with the operation console 20 or the operation lever 28.

One end of the operating platform b29 is engaged with the head of the bolt 24, and the other end is engaged with a small hole of the operating lever 28.

Reference numeral 32 denotes a stopper for the cable 12, and holes 30 (symbols 30 a to 30
The small diameter portion is loosely fitted into f).

Further, as shown in FIG. 6, the small diameter portion of the stopper 32 is rotatable to the operating lever 28 by means of rivet processing or the like.

Further, the large diameter part has a hole into which the end of the cable 12 is inserted, and a screw 31 is screwed into the hole perpendicularly to the hole of the same diameter to fix the cable 12.

Note that 20a is a hook that relays the cable 12, and 33 is a plate provided on the engine body, into which the adjustment rod 13 is screwed.

- The operation in the case of the configuration described below will be described.

A description will be given of the case where the state of use indicated by the solid line in FIG. 3, that is, the state in which the rope 12 is pulled in the A direction, is changed to the direction of the mouth.

First, remove the port I-24 and rotate the operation console 20 60' counterclockwise.

At this time, loosen the screw 31 and fasten the cable 12 with the metal fitting 32.
Then, fix the end of the cable 12 to the hole 30b of the operating lever 28 using a new stopper 32.

Once the position of the operation console 20 is determined, insert the bolt 2 into the hole 22b.
4 and fixing the operating table 20 to the boss 23, the adjustment for changing the pulling direction of the cable 12 is completed (
(The state is shown by the two-dot chain line in Fig. 3).

Therefore, in this embodiment, it is possible to deal with six types of pulling directions.

That is, 22a and 30a, 22b and 30b,...
...22f and 3Of correspond.

The present invention as described above has the following effects.

It becomes possible to easily adapt to changes in the pulling direction of the cable depending on the usage state of the engine body, which leads to a reduction in the number of parts and ease of handling.

In addition, when the machine manufacturer ships the machine, the control panel, control lever, instance pipe, etc. are temporarily assembled, and the assembly can be reassembled at the customer's site according to the pulling direction of the rope, improving versatility. .

Furthermore, when assembled, the control panel assembly can be attached to the machine with a single bolt 24, which greatly reduces the number of assembly steps.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an outline of a speed governor for a conventional spark-ignition internal combustion engine, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
The figure is an explanatory diagram showing a speed governor according to an embodiment of the present invention corresponding to FIG. 1, FIG. 4 is a view in the direction of arrow B in FIG. 3, and FIG. 5 is a view in the direction of arrow C in FIG. 3. FIG. 6 is a view taken along arrow D in FIG. 12...Cable, 20...Operation console, 21.
...Pin, 22a-22f ...Hole, 23
．． 25...Boss of the engine body, 24...
...Bolt, 26...hole, 28...operation lever, 30a to 30f...hole.

Claims (1)

[Scope of utility model registration request] A speed governor for an internal combustion engine, comprising: an operating lever connected to a throttle valve and provided with a plurality of operating cable attachment parts; an operating cable detachably attached to the operating lever mounting part; and the operating lever. are rotatably coaxially supported via a torsion spring, and a plurality of mounting holes into which mounting bolts to the engine body are inserted are provided at equal intervals on a circumference concentric with the axis of the operating lever. 1. A speed governor for an internal combustion engine, comprising: an operation console mounted on an engine main body so as to be rotatable about the axis in response to a pulling direction of the operating cable.