JPH02286873A - Recoil start type forced air cooling engine work machine - Google Patents

Abstract

PURPOSE:To facilitate the starting operation and enhance the engine cooling performance by installing a recoil starter fitted on the engine body in such a way as interposed in series between the engine and a working machine. CONSTITUTION:A cooling fan 3 and a fan case 4 are installed on one side of the body 2 of a forced air-cooling engine 1 of recoil start type. On the other side of the engine body 2, a working machine 5 is arranged in series and coupled being interlocked. A recoil starter 6 is fitted on the engine body 2. This recoil starter 6 is fitted interposed in series between the engine 1 and the working machine 5. Thus the engine working machine is hard to dislocate toward the operator side, which provides easy-to-start characteristic. Also the cooling perfor mance of the engine can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a working machine operated by a forced air-cooled engine started by a recoil starter.

[Basic Structure] The basic structure of the recoil start type forced air-cooled engine working machine, which is the premise of the present invention, is as follows.

For example, as shown in FIGS. 1 and 2 or 4 and 5, a cooling fan 3 and a fan case 4 are provided on one side of the engine body 2 of a recoil start type forced air-cooled engine l, and the engine body A working machine 5 is arranged in series on the other side of the engine body 2 and interlocked with each other, and a recoil starter 6 is attached to the engine body 2.

The working machine 5 includes a generator, a compressor, a pump, and the like.

[Prior Art] In the above basic structure, the arrangement of the refill starter 6 is as follows:
The conventional technology is as follows.

That is, as shown in FIGS. 4 and 5, the recoil starter 6 was fixed to the front surface of the cooling air intake 11 of the fan case 4 provided on one side of the engine 1.

[Problem to be solved by the invention] The above conventional technology has the following problems.

■When you pull the start knob 7 of the recoil starter 6 to start the engine 1, the pulling force causes one end F of the engine working machine to pull toward you using the other end R as a rotational fulcrum. Trying to be moved.

At this time, because the ground friction resistance at the other end R, which is the rotation fulcrum side of the engine working machine, is small, the one end F, which is subject to tensile force, easily shifts toward the front, making it difficult to perform the starting operation. .

■Since the recoil starter 6 narrows the air passage cross-sectional area of the cooling air intake 11 of the fan case 4, the cooling performance of the engine 1 is low.

In order to solve the above-mentioned problems of the prior art, the present invention has been made to prevent the engine working machine from shifting when starting the engine by recoil start, and to expand the air passage cross-sectional area of the cooling air intake of the fan case. The task is to do something.

[Means for Solving the Problems] The present invention provides a recoil starter 6 in the basic structure.
It is characterized by the following arrangement.

For example, as shown in FIGS. 1 and 2, the recoil starter 6 is installed in series between the engine 1 and the working machine 5.

[effect] The present invention has the following effects.

■Pull the start handle of the recoil starter,
When starting the engine, the pulling force tends to pull the engine working machine toward you in a nearly parallel direction.

At this time, a large ground frictional resistance is generated at both one end and the other end of the engine working machine, so that the engine working machine becomes difficult to shift toward the front, making it easier to perform a starting operation.

■Since the recoil starter is placed between the engine and the work equipment, the cross-sectional area of the cooling air intake in the fan case can be secured wide without being narrowed by the recoil starter, allowing engine cooling. Performance can be improved.

[Example code] Embodiments of the present invention will be described based on the drawings.

1 to 3 are diagrams for explaining a recoil start type forced air-cooled engine working machine according to an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional side view, FIG. 2 is a plan view, and FIG. 3 is a beam coil. FIG. 3 is a vertical cross-sectional side view of the starter.

This recoil start type forced air cooling engine working machine has a generator 5 installed on the rear side of the recoil start type forced air cooling engine l.
are arranged in series, a fuel tank 8 is arranged at the top, and the whole is supported by a frame 9.

The recoil start type forced air-cooled engine 1 has a cooling fan 3 attached to a crankshaft lO protruding from the front part of the engine body 2, this cooling fan 3 is covered with a fan case 4, and the rotation of the cooling fan 3 causes the front surface of the fan case 4 to The cylinder block 13 in the upper part of the engine body 2 can be cooled by the cooling air 12 taken in from the cooling air intake 11 of the engine body 2.

The beam coil starter and other shields are removed from the front of the cooling air intake 11, thereby ensuring a sufficient air passage cross-sectional area of the cooling air intake 11 and improving the cooling performance of the engine 1. There is.

In addition, a recoil starter 6 is attached to the rear of the engine body 2, and the recoil starter 6 is arranged to be interposed in series between the engine 1 and the generator 5. The engine working machine is positioned so that even if the start handle 7 is pulled, the engine working machine will not easily shift.

The generator 5 is capable of generating electricity by attaching a rotor 16 to a rotating shaft 15 horizontally suspended within a casing 14 and rotating the rotor 16 along a stator 17 attached to the inner peripheral surface of the casing 14. .

As shown in FIG. 3, the front end of the rotating shaft 15 is fitted into the rear end of the output shaft 18 protruding from the rear part of the engine body 2, and connected with a connecting bolt 19 inserted through the rear end of the rotating shaft 15. is concatenated.

The recoil starter 6 is attached to the rear of the engine body 2 or has a pivot 20 attached to the coil starter case 23, a starter lobe 22 is wound around a reel 21 pivoted on the pivot 20, and a starter is attached to the tip of the starter lobe 22. By pulling the handle 7, the reel 21
It is designed to rotate.

In addition, a ratchet 25 is attached to a friction plate 24 pivoted on a pivot shaft 20 at the rear of the reel 21, and a start pulley 26 that engages and disengages from the ratchet 25 is connected to the output shaft 18 via a fan 27. The engine 1 can be started by rotating the output shaft 18.

After the engine is started, the reel 21 is rotated in the opposite direction by the restoring force of the spiral spring 28, so that the starter lobe 22 can be reeled back to its original state.

This recoil starter 6 includes a recoil starter case 1
9. Even though the output shaft 18 of the engine 1 is inserted through the pivot 20 and the start pulley 25 and the recoil starter 6 is placed between the engine 1 and the generator 5, the output shaft 18 of the engine 1 and the generator 5 are The rotating shaft 15 can be connected without any problem.

As shown in FIG. 1, the generator 5 cools the inside of the casing 14 with the cooling air 30 taken in from the air intake port 2.9 at the rear of the casing 14 through the rotation of the fan 27, and also absorbs heat inside the casing 14. The cooled air 30 flows through the casing 1
4. Air can be exhausted from the air outlet 31 at the front.

Further, in FIG. 2, 32 represents an air cleaner, 33 represents a muffler, and 34 represents a control box.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining a recoil start type forced air-cooled engine working machine according to an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional side view, FIG. 2 is a plan view, and FIG. 3 is a beam coil. FIG. 4 and FIG. 5 are explanatory diagrams of the prior art; FIG. 4 is a view equivalent to FIG. 1, and FIG. 5 is a view equivalent to FIG. 2. 1... Recoil start type forced air cooling engine, 2... Engine body, 3... Cooling fan, 4... Fan case, 5... Work equipment (generator), 6... Recoil starter. Patent applicant Kubota Iron Works Co., Ltd. Figure 2

Claims (1)

[Claims] 1. A cooling fan 3 and a fan case 4 are provided on one side of the engine body 2 of the recoil start type forced air-cooled engine 1, and a work implement 5 is arranged in series on the other side of the engine body 2. In a recoil start type forced air-cooled engine working machine configured by interlocking and connecting a recoil starter 6 to the engine body 2, the recoil starter 6 is installed interposed in series between the engine 1 and the working machine 5. A recoil start type forced air-cooled engine work machine featuring