JPS59203845A - Apparatus for turning output shaft of internal- combustion engine in normal and reverse directions - Google Patents

Abstract

PURPOSE:To reduce the size of the titled apparatus for turning a shaft in both normal and reverse directions, by supporting a gear, a lever and a turning wheel on a support shaft, and providing a means for transmitting the engine torque to the turning wheel via a centrifugal clutch and controlling supply of mixture gas. CONSTITUTION:A gear 2 and a lever 3 are supported on a support shaft 2a, and a load 1 is driven by the gear 2. A support shaft 6a is driven by an engine 7 via a centrifugal clutch 7a. When a lever 15 supported on a support shaft 15a is turned clockwise, a valve 7b for supplying mixture gas to the engine is opened and increases the engine output. When a lever 3b is pushed manually to the left, a lever 16 is urged onto a contact portion 3c, so that the lever 15 is turned clockwise. The load 1 is driven in normal direction, and the driving speed of the load 1 can be changed according to the turning angle of the lever 3b. Thus, it is enabled to turn the output shaft of a small engine in both of normal and reverse directions with ease.

Description

DETAILED DESCRIPTION OF THE INVENTION The object of the present invention is to provide a device that rotates the output shaft of a small gasoline engine in the forward and reverse directions by rotating a manual lever left and right, and at the same time adjusts the rotation speed or output torque. It is.

Although it is theoretically possible to perform reverse operation in internal combustion engines such as the Ganlin engine, it is difficult to put it into practical use, so it is currently impossible to implement. For this reason, in the case of large-output devices, such as automobiles, a transmission mechanism is used to switch between forward and reverse to obtain forward and reverse output.

In the case of small engines, the above-mentioned measures are adopted.
x I. This is because the mechanism is large, expensive, and complicated.

The present invention was proposed from the above-mentioned viewpoint, and has succeeded in providing a forward/reverse rotation device that is small, simple, and easy to handle. Therefore, it has the feature that it can provide an effective means as a small-sized, low-output power source for outdoor work.3 Next, details of an embodiment will be explained.

In Figure 1, the support shaft 2a installed in the main body has a memorial service 2
and lever 3 are supported so that they can rotate independently.

Symbol 1 is a load, which is driven by gear 2 by a suitable torque transmission thread. Support installed on lever 3! ll+4
A is rotatably supported by a tooth width 4b which is integrally formed into a coffin 1, and a rotary ring 4 whose circumferential portion is covered with a rubber ring.

The rotating wheels 5a and 5b are a support shaft 6a provided in the main body.

6b, one of which is driven by a gasoline engine 7 via a centrifugal cruncher a,
The externally powered rotating wheels are driven in directions opposite to each other using belts or gears, and in this embodiment are driven in the direction of the north arrow (◇).

The lever 8a18b is connected to the guide vias 12a, 12b and 13.
a, 13b, I! to the left and right! Support 1.1
The lever 8akl is biased to the right by the spring 10a, and the lever 8b is biased to the right by the spring 10b. Contact pin 1 provided on the main body], a, 1
11] This is to prevent the movement of the levers 8a, 8b. Long holes 9a, 9 in levers 8a, 8b
3, the lever 3 is in the neutral position shown, that is, the rotating wheel 4, the rotating wheel 5a, 51]
It is localized at a location far away from any of the images. When lever 3\ is pressed left and right and rotated, spring 10a,
10b is used for the return rebound force.

Those indicated by symbol A (d, also serves as legitimate child 4, lever 3 +)
and 3, and its hI, l'll
i is shown in FIG.

In FIG. 2, the symbol 3.3b is a lever with the same symbol as in FIG. The rotating wheels 2Qa and 2Ub are rotatably supported on the same support shaft 19, and the support shaft 19 is mounted on the lever 3,
A lever 3b is rotatably supported on this. A spring 22a is applied between the protrusion 21a of the rotating ring 20a and the lever 3b, and the rotation of the rotating ring 20a by the spring 22a is caused by the contact pin 2 mounted on the lever 3b.
; Suppressed by 3a.

A spring 22b is hung between the protrusion 21b of the rotating wheel 20b and the lever 3b.
The rotation of the rotary wheel 20b due to the lever 3bK+Im is suppressed by the abutting pin 2:3b.

A sliding pin 3e, which is set up on the lever 3, is loosely fitted into the elongated hole 19a of the rotating ring 20a and the elongated hole 19b of the rotating ring 20b.

With the above configuration, the levers 3 and 3b are held in a nearly straight line, and when the lever 3b is rotated left and right, the levers 3 and 3b are bent, but the return elastic force is applied. It has become. #iJ mentioned spring 10a1
Due to the return elastic force of 10b, the spring 2 in FIG.
2a and 22b are configured to be stronger 4).

Returning to FIG. 1, a contact portion 3C13d is provided on the left and right protrusions 'J11il of the lever 3b, and the lever 10 is provided with contact portions 3C13d.
It is designed to come into contact with.

The levers 14a and 14b fixed to the main body have guide holes 1.
7a, 17b are provided, and the guide elongated hole 17b, 1γa17
1?1 movable bottle 18a, 1 mounted on the lever 16
8b, 18c, and 18d are infested.

A support shaft 15atlj provided on the main body: The lever 15 is rotatably supported, and the lever 15 is elastically repelled in the direction of the arrow (counterclockwise direction) and is in contact with the sliding pin 18b. When rotated in the direction, the mechanism shown in note 7b, that is, the valve that allows the mixed gas to flow into the engine, is opened, and the output of the engine is increased by driving the four front members that increase the output of the engine. When Ennon 7 is started, it rotates at low speed. 111, power transmission by the centrifugal force clutch 7a is not started.

Next, when the lever 3b is manually pressed and rotated to the left of the arrow, the rotating wheel 4 is pressed into contact with the rotating wheel 5a. When the lever 3b is further depressed, it bends through the connecting part A, and the contact part 3
Since the lever 16 is pressed by C and moves, the sliding pin 1
Lever 1 on 8b! M-j: Suppressed and rotates clockwise.

Therefore, as described above, since the engine 7 increases its output and speed, the centrifugal cuff lunch 7a transmits torque, causing the rotating wheel 5a to move in the counterclockwise direction and the rotating wheel 5b to move in the clockwise direction. Rotate towards the eye.

Since the rotating wheels 5a and 4 are in pressure contact with each other at a relatively large biting angle, there is a feature that the power is reliably transmitted from the rotating wheel 5a to the rotating wheel 4 with a pressing force corresponding to the magnitude of the load 1. Therefore, the load 1 is driven in the forward direction, and the driving speed of the load 1 can be changed in accordance with the rotation angle of the lever 3b.

Next, when the lever 3b is returned to the neutral position shown in the figure, that is, the position where the levers 3 and 3b are in a straight line, the engine speed becomes low and the torque transmission via the centrifugal cuff lunch 7a is cut off, so that the engine rotates. Since the wheel 5a stops and the pressure contact force due to the biting angle disappears, the lever 3 also easily returns to the neutral position shown, and the load 1 stops.

Even when lever 3b is pressed to the right and lever 3.3b is rotated, the effect is exactly the same, rotating wheel 5b drives rotating wheel 4 at the biting angle, and load 1 moves in the opposite direction. be done. At this time, the driving speed of the load 1 can be changed in accordance with the inward movement angle of the lever 3b.

When the lever 3b is moved to the neutral point position shown in the figure, the load 1 stops, which is exactly the same as described above, and the effect is also the same.

When the rotating wheels 5a, 5b and the rotating ring 4 are pressed together, both are at rest, so all of the rotating wheels are treated as gears.
The meshing also enables power transmission. In this case, the stop 4b and the rotating wheel 4 can be made the same.

4-b, which adjusts the flow rate of the mixed gas, instead of structure 7b,
The well-known constant speed rotation device ♂1 of the engine rotation is used, and the lever 15
If the set speed is changed by the rotation of the lever 3b, it is possible to drive the load 1 at a corresponding speed depending on the left and right rotation angle of the lever 3b.

Next, another embodiment will be explained with reference to FIG.

In Fig. 3(a), the support shaft 2a1, the lever 3.1, the wheel 2
．． 4b, the support shaft 4a, the rotating ring 4, and the load 1 are completely the same as the members with the same symbols in FIG. The difference is that a spring 25a is applied to the lever 3, and the lever 3 is elastically repelled clockwise, and the lever 3 has a spring 25a applied to the lever 3.
Rotation is inhibited by f. The rotating wheel 24 is driven clockwise by the engine 7 via the centrifugal clutch 7a.

The lever 26 shown in FIG. 3(b) is rotatably supported by the support shaft 2a in FIG. 3(a) and overlaps with the first lever, or is used to clearly identify other members. As a separate drawing,
It is shown in FIG. 3(b) together with other attached members.

The mechanism shown in FIG. 3(b) is located on the lower side 1 of the mechanism shown in FIG. A gear 27b formed as one body and a rotary wheel 27 crowned with a comb ring are rotatably supported on a support shaft 27a installed at the shaft 26. Also, a support shaft 28 provided on the left force length L1j of the lever 26
A gear 28 is supported by the gear 28, and the r* port 112B meshes with the floats 2 and 27b. 77M on the dotted line Yamanaka 2
have the same symbols as in Figure (a). Sho float 27 b
and 2 do not mesh.

The lever 26 is repelled by the Sgelinda 25b in the special training direction, and this force is applied to the restraining part 2 provided on the main body.
9 is suppressed. The restraining portion U'3f (shown in (a)) and 29 may be a common member. .

The rotating ring 24 and the support shaft 24a are the same as those shown in FIG. The lower extension of the lever 3.26 is provided with a mechanism shown in FIG. 4, which will be explained next. ,
In FIG. 4, the symbol 3.261''1 is the aforementioned extension, and is shown as a view of FIG. 4A viewed from the direction of arrow B.

The lever 3.26 is opened and bent as shown.

A lever 30 is rotatably supported on a support shaft 3 (Ja) provided on the main body, and is oriented in a state where it is in contact with levers 30-1 and 3.26.

The one indicated by the symbol A has exactly the same configuration as the exit surface 81j A in FIG. Levers 3 and 26 are alternatively rotated.

The iso@t+ indicated by face No. 2 C is the same as the structure shown in the first diagram, which includes the lever 16, the proximal 3+, 3d, and the lever 15, and moves up and down in the direction perpendicular to the JfX+ child 30 consonant 0c. By doing so, the mixture gas inlet valve is opened in accordance with the rotation angle of the lever 30b, and the engine output is increased (
It is fried. Also, as explained in the previous embodiment, the lever 30
It may be considered as a mechanism that rotates the engine 11 times at a rotation speed corresponding to the rotation angle b.

When the sweeper 30c is manually pressed downward in a direction perpendicular to the plane of the paper, the lever 3b is turned 11 in the counter-time cutting direction as shown in Fig. 3.
2i: 1, the rotating ring 4 comes into pressure contact with the rotating ring 2/I at a relatively large biting angle. When the eldest child 30c is further pressed, 1,'
Since the bar 301) is bent, the rotation of the engine 7 is
1, torque transmission is started by the centrifugal clutch 7a, the rotating wheel 4 is driven by the rotating wheel 24, and the tooth B11
．． 41), the load 1 is driven in the positive direction via 4]
.

After moving the legitimate child 30c to the neutral point and moving 11'f, Ennon 7
becomes a low speed, and the torque transmission to the centrifugal force clutch 7a is cut off, and the rotating wheel 24 stops, so the effect of the welding angle disappears, and the elastic force of the splinter 2!5a is reduced. Due to the force, the lever 3 rotates clockwise, the 101 rotating wheels 24.4 are separated, and the dog 1 stops 6, the eldest child 30 c
In the case of "11" being pressed against the blade on paper, the same is true for 51, the lever 26 is turned 1jν in the opposite direction, and the rotating wheels 27 and 24 are pressed against each other, and the heir 3ij c Press n
- Then, due to the rotation @24, the gears 27b and 28 (
~te, 1'! Since I″1 ton 2 is driven in the opposite direction,
The target J1 is driven in the opposite direction. At this time, gear 28
Due to the rotation of , the lever 26 generates a torque in the special training direction 1'4IJ, which separates the rotating wheel 2=1.27 by 77 degrees, or by the rotation of the biting angle of rotation Φ111124.271'il]・There is no problem because the size has been increased.

When the eldest child 30c is returned to the neutral point, the problem when the load 1 stops is exactly the same as when the load 1 is driven in the forward direction.

The object of the present invention can also be achieved by using the rotating wheels 24, 4, 27 as gears that mesh with each other. In this case, the rotating wheel 4.2
'z can also be replaced by gears 4b and 27b, respectively.

As described by Kin and Akira above, according to the present invention, objective 1 stated at the beginning is achieved and the effect is significant.

[Brief explanation of drawings]

Fig. 1-1 is an explanatory diagram of the device of the present invention, Fig. 2 is an explanatory diagram of a part thereof, Fig. 3 is an explanatory diagram of another embodiment of the device of the present invention, and Fig. 4 is an explanatory diagram of a part thereof. An explanatory diagram of one part is shown respectively. 1 Netsukuda, 2.4.27b Gear, 3.26
Leher, 1.5a, 2 a, 4 a, 28a, 2
7a, 30a. 24a, 6a, 6 1), 1
9 Support i1'L 8a, 8b, 16.3 b
, 3 (J, 3 (J l), ] 5 lever, 10
a, 10 b, 1.6 a161), 22 a
, 22 b, 25 a', 25 b Spring, 5'a, 5b, 4.20 a% 20 b
', 27.24 Rotating wheel, 3a, 3e, 18a, 1
81], 18 c 118 d -Wi moving bottle, 11a
, IIJ 23aX23b, 3 f, lri
Contact e, 7 engine, 7 a"'x" A core clutch, A bending part, C lever 16, ]5. ′
Shunso including 1ll-, 12a, 12J 12c,,
12d-'52. Inner hinge, 7b Manual adjustment of engine mixture gas 171, Tsukigaki, 3c, 3d Contact part,
30c Legitimate child 5, patented head person l Fig. 2 Fig. 3 (a) (a) 4th mortar

Claims (2)

[Claims] (1) A first lever rotatably supported by a support shaft provided on the main body, a first gear supported rotatably on the lever ♂, and a load driven by the gear. ,
A second gear rotatably supported by a support shaft at the free end of the first lever and meshing with the first gear; a first rotating ring that rotates coaxially and synchronously with the gear; When the rotational speed between the two levers rises above the set value, power is transmitted so that the first rotating wheel is pressed against the first lever at a biting angle and driven by the left and right rotation of the first lever. A mechanism for driving the second or third rotating wheel via a centrifugal mechanism that performs Sunlinda device that repulses the first lever and play W of the first lever:
: When the manual lever connected to section J is rotated left and right, and the rotation torque exceeds the set value, the lever is bent left and right using the previously bent connection as the bending point. A mechanism that generates a return elastic force, and a device that adjusts the inflow of a mixture of fuel and air into the internal combustion valve in relation to the degree of bending of the manual lever with respect to the first lever. A device for forward/reverse the output shaft of an internal combustion engine. (2) A first lever rotatably supported by a support shaft provided on the main body, a first gear supported so that the lever can also rotate in one direction, and a load driven by the body weight. ,
a second gear rotatably supported by a support shaft at the free end of the first lever and meshing with the first gear; a first rotating wheel that is coaxial with the gear and makes the same rotation jυ1; a second lever that is rotatably supported by a support shaft provided on the main body and is placed so as to overlap the first lever;
A third gear rotatably supported by a support shaft is attached to the free end of the lever, and meshes with each of the gear and the first gear, and a support shaft is attached to the free end of the first lever. a fourth gear rotatably supported by a third gear;
The fourth rotary wheel rotates coaxially and synchronously with the gear, and the first and second levers rotate in the same direction, so that the first and fourth rotary wheels are brought into pressure contact at a biting angle and driven. , a mechanism for driving the fifth rotating wheel through a centrifugal cuff lunch that transmits power when the rotational speed of the internal combustion engine increases beyond a set value; L.A.
'The first and second springs that resiliently repel the first and second levers and the rotation of the first and second levers are controlled so that the rotating wheel of J4 is held apart from the fifth rotating wheel. A restraining member to be restrained, a manual lever rotatably supported by a support shaft provided on the main body, a connecting part provided between the support 1+11 of the lever and the manual heir, and a manual lever that rotates the manual lever left and right. When the rotation torque exceeds a set value, the mechanism bends left and right using the above-mentioned connecting part as a bending point, and generates a return elastic force only when it is bent, and the above-mentioned mechanism of the manual lever. The first (or second)
A mechanism for selectively pressing the first or fourth rotary wheel against the fifth wheel by rotating the lever, and bending the manual lever at the connecting portion marked i. 1. A forward/reverse gearing surface for an output shaft of an internal combustion engine, comprising a device for adjusting the inflow of a mixture of fuel and air into the internal combustion engine in relation to the rotational speed.