JPS5823979Y2 - Internal combustion engine chain starting device - Google Patents

Description

[Detailed explanation of the invention] In the conventional chain starting method for internal combustion engines, the starting rotation direction (turning the starting handle The problem was that the rotation direction was reversed, making it difficult to start the engine on the left-hand rotation side.

This invention divides the starting handle shaft into two parts and connects the two through a reversing mechanism, so that the starting operation can be performed on either the left or right side by rotating the handle clockwise. This is what I did.

It is also an object of the present invention to make it possible to firmly support both handle shafts, which are divided into two parts, with a simple structure, and also to make it possible to arrange the reversing mechanism in a convenient position for inspection.

The gist of this is that a starting sprocket connected to the crankshaft is provided on the side opposite to the steering wheel of the internal combustion engine body, and a first bracket extending upward from the main body 1 is fixed, and a reversing mechanism is attached to the upper end of the first bracket. Fix the case cover to the case, fix the second bracket to the upper end of the steering wheel side of the internal combustion engine, and connect the short first sprocket shaft parallel to the starting sprocket axis.
・Divided into a handle shaft and a long second handle shaft, the first handle shaft is supported on both sides by the reversing mechanism case and cover, and the chain 7 is hung between the sprocket fixed to the first handle shaft and the starting sprocket. , the first handle shaft is extended to the side opposite to the operating handle side in the longitudinal direction of the crankshaft of the internal combustion engine, a handle locking portion is provided at the end of the extended side of the first handle shaft, and the second handle shaft is It is supported on both sides by the 2nd bracket and the cover of the reversing mechanism, and is operated beyond the upper side of the main body 1 and the clutch.The 2nd part is protruded from the part 1 near the handle, and the 2nd part is attached to the tip of the protruding side of the handle shaft.
A needle locking portion is provided, and the first. The second steering wheel shaft is connected via a pair of reversing spur gears inside the case, and the internal combustion engine main body 1 is separated so that it can be started on both sides.

The present invention will be explained below based on the embodiment drawings shown in FIGS. 1 to 3.

In FIG. 1, 1 is the internal combustion engine body, 2 is a clutch, 3 is a steering wheel, and 4 is an output shaft.

The starting sprocket 5 on the side of the internal combustion engine main body 1 is connected to the crankshaft via a one-way clutch, or is directly fixed.

6 and 7 are the first. The second nodule shaft is rotatably supported by the first and second brackets 8 and 9 via bearings in a posture parallel to the axis of the starting sprocket 5.

The first handle shaft 6 has a first coupling 11 for connecting a starting handle 10 to one side of the internal combustion engine (the left side in the illustrated example).

The second handle shaft I has a second coupling 12 for connecting a starting handle 10' to the other (right-hand) end of the internal combustion engine.

The chain 713 is connected between the starting sprocket 5 and the sprocket 140 on the first handle shaft 6.

Starting...The first... A reversing mechanism 15 is installed between the second and second handle shafts 6.1. Figure 3 shows its detailed structure.

In FIG. 2, the case 1γ fixed to the first bracket 8 is provided with a bearing 18 therein, and this bearing 18 supports the center portion of the first handle shaft 6.

A cover 20, which is fastened to the case 17 with a plurality of bolts 19 (FIG. 3), supports the right end of the first handle shaft 6 at the hole 21.

In the gear chamber 22 formed by the case 1T and the cover 20, a small gear (spur gear) 24 fixed to the first handle shaft 6 via a key 23 is connected to the second handle shaft I as shown in FIG.
The gear meshes with a small gear (spur gear) 26 fixed to the left end of the gear via a key 25.

The illustrated pinions 24 and 26 have the same number of teeth.

The left end of the second handle shaft I is connected to the cover 20 by the bearing 27.
The right end portion is supported by the bracket 9 via a bearing 28.

Specifically, the joints 11 and 12 are formed by pins press-fitted into diametrical holes in the handle shaft 6.7.

When starting the internal combustion engine on the left side, the starting handle 10 is engaged with the joint 11 of the first handle shaft 6, and the starting handle 10 is manually driven to the right.

Then, the starting sprocket 5 on the internal combustion engine main body 1 side also rotates in the right direction, making it possible to give starting rotation to the crankshaft.

At the moment the engine is started, the starting sprocket 5 is isolated from the crankshaft, or the starting handle 10 is forcefully disengaged from the coupling 11.

When starting from the right side of the internal combustion engine, use the starting handle 1.
Engage with the joint 12 at the 0' position and turn it clockwise as well.

The rotation of the second handle shaft I is caused by the small gear 26.24.
The first steering wheel shaft 6 rotates in the same direction as when the starting operation is performed using the starting handle 10 on the left side of the internal combustion engine main body 1, and can give starting rotation to the crankshaft.

As explained above, according to the present invention, the first starting valves protrude from the left and right sides of the internal combustion engine main body 1. 2nd...handle shaft 6
．． Since the reversing mechanism 15 is provided between 7 and 7, the engine can be started by operating the handle to the right on either the left or right side of the internal combustion engine, making the starting operation extremely easy. There are some advantages.

The advantages of the present invention will be explained in detail as follows.

(b) Operation of the internal combustion engine main body 1...on the steering wheel 3 side,
・There are two places on the opposite side from the side of the steering wheel 3 to start the engine.
0 and 10' can be attached selectively.

In other words, the first and second joints 11 and 12 are arranged at both ends in the length direction of the crankshaft (horizontal direction in FIG. 1) with an interval corresponding to approximately the entire width of the main body 1 (horizontal width in FIG. 1). Both joints 11. The 1st and 2nd shafts 6.7 are provided with a pair of reversing small gears 24°2.
They are connected via 6.

Therefore, it is possible to start the steering wheel 10.10' from either the side of the steering wheel 3 or the opposite side of the main body 1.
For example, all you have to do is rotate it to the right.

(b) The second handle shaft T extends toward the steering handle 3 side, and a starting handle 10' is attached via a second joint 12 near the steering handle.

Therefore, the operator can operate the starting handle 10' and the steering wheel 3 at the same place (on the steering wheel side), which is extremely practical.

(c) It is a chain starting type device using sprocket 5.14 and chain 713, and has a structure in which the handle shaft 6.7 is placed above the main body 1 via brackets 8, 9, case 17, etc. Therefore, the first . The second handle shafts 6, 7, etc. can be attached.

Therefore, the main body 1 of a conventional internal combustion engine can be used as it is as the main body 1 for the present invention without modification, which is economical.

2) Shorten the 1st...handle shaft 6, and the 2nd...handle shaft T.
By increasing the length, the reversing mechanism 15 can be easily arranged at the upper end of the main body 1 on the side of the starting Suge rocket 5.

Moreover, since the reversing mechanism 15 is placed on the starting sprocket 5 side, inspection of the reversing mechanism 15 and sprocket) 5
．． The operator can inspect the chain transmission mechanism consisting of the chain transmission mechanism 14 and the chain transmission mechanism 13 at the same place, making the inspection work easier.

(E) Case 1 of the reversing mechanism 15 when the short first handle shaft 6 is
7 and the cover 20, and the long handle shaft 7 is supported on both sides using the cover 20 and the 27th racket 9, so the bracket is the first bracket 8 for supporting the reversing mechanism. It is only necessary to provide a second bracket 9 and a second bracket 9.

That is, although the support structure is simple, by using the case 17 of the reversing mechanism 15 as a support member, it is possible to firmly support the short first spindle 6 and the long second spindle I. Therefore, it has good durability against engine vibrations, etc.

In addition, in the case of a type in which the transmission of rotational force to the handle shaft side after starting is prevented, a starting knob may be provided integrally with the handle shaft.

[Brief explanation of drawings]

Fig. 1 is a front view of an internal combustion engine to which the present invention is applied, Fig. 2 is a partial vertical cross-sectional view parallel to the paper plane of Fig. 1, and Fig. 3 is a cross-sectional view taken along the line ■-■ of Fig. 2.・・・・・・Internal combustion engine body,
3... Control... Handle, 5... Starting sprocket, 6, 7... 1st. 2nd handle shaft, 8.9... 1st. 2nd bracket, 11,
12...1st. 2nd joint (...handle locking part)
, 13... Che 7. 14... Sprocket, 15... Reversing mechanism, 11... Case, 20... Cover.

Claims (1)

[Scope of utility model registration request] A first bracket 8 that extends upward from the main body 1 and includes a starting sprocket 5 connected to the crankshaft is attached to the opposite steering handle 3 of the internal combustion engine main body 1, and a case of the reversing mechanism 15 is attached to the upper end of the first bracket 8. 17, the case cover 20 is fixed to the case 17, and the internal combustion engine main body 1 is fixed.
Operation: A second bracket 9 is fixed to the upper end of the handle 3 side, and the handle shaft parallel to the axis of the starting sprocket 5 is divided into a short first handle shaft 6 and a long second handle shaft 1. 6 is supported on both sides by the reversing mechanism case 17 and the cover 20, and a checker 7 is installed between the sprocket 14 fixed to the first handle shaft 6 and the starting sprocket 5.
13, and the first handle shaft 6 is operated in the longitudinal direction of the crankshaft of the internal combustion engine.It extends to the side opposite to the handle 3 side, and the first handle shaft 6 has a handle locking portion at the tip of the projecting side. 1
1, the second handle shaft 1 is supported on both sides by the second bracket 9 and the cover 20 of the reversing mechanism 15,
Maneuver over the upper side of main body 1 and clutch 2...handle 3
A handle locking portion 12 is provided at the protruding end of the second handle shaft 7, and the first and second handle shafts 6, 7 are connected to a pair of reverse rotation flats in the case 17. Gear 24.
A chain starting device for an internal combustion engine, characterized in that it is connected through a chain 26 and can be started on both sides of the internal combustion engine main body 1.