JPS59121248A - Power converting device - Google Patents

Abstract

PURPOSE:To reduce the size and weight of the device and increase the speed thereof by a method wherein a crank mechanism is not employed in the power converting device applied to an internal-combustion engine or the like and a rotor, provided with a plurality of cylinders and a wavy guide groove, is connected to the power converting device to permit the mutual conversion of reciprocating motion and rotary motion. CONSTITUTION:A roller 7, guided by the guide groove 3 by the rotation of a rotor 1, is lowered along the wavy configuration under being controlled in the peripheral movement thereof by the recessed groove 11 of a pushing member 9. A piston 5 is lowered through a connecting rod 6 in accordance with the lowering of the roller 7 and air is induced into a cylinder 4 through a suction valve. Subsequently, the piston 5 is elevated along the guide groove 3, ignition and explosion are caused at the upper dead point and the piston 5 is 3 pushed down. The push-down force is delivered to the wavy guide groove from the roller 7 and the rotary shaft 2 rotates through the rotor 1. Such motions are effected with time lags and the rotor 1 is rotated smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power conversion device that mutually converts multiphase reciprocating motion and rotational motion, which is applied to internal combustion engines, hydraulically operated valves, relays, and the like.

Conventionally, internal combustion engines such as engines convert reciprocating motion into rotational motion via a crank mechanism.

The intake, compression, explosion, and exhaust processes performed in the cylinder of this engine are performed by the movement of a piston that reciprocates within the cylinder, and the stroke of the piston movement is fixed by a crank mechanism. That is, the bottom dead center of the piston in the intake and explosion strokes is the same, and the top dead center of the piston in the compression and exhaust strokes is the same, so that sufficient intake and exhaust cannot be achieved under optimal conditions. Similarly, the conditions in the explosion process are the same as the stroke in the intake process, so the high temperature and high pressure conditions in which combustion takes place are longer, resulting in nitrogen oxides (N0x).
The amount of generated will increase.

In addition, since conventional engines use a crank mechanism, they require a height that is more than twice the piston stroke, and they also use crankshaft trucks with a complicated shape, making them large and heavy. The structural limit has been reached and the only hope is to change the material at present.

The present invention was made in view of the above points, and it performs mutual conversion between multi-phase reciprocating motion and rotary motion without using a crank mechanism. Especially when applied to an engine, it is possible to reduce size and weight, achieve high speed rotation, and achieve optimal The purpose of the present invention is to provide a power conversion device that allows the selection of combustion conditions.

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

1 to 3 show an embodiment of the present invention when applied to an engine.

In the figure, l denotes a rotor having a cylindrical shape with an open top, and a rotary shaft 2 serving as an output shaft is connected to the bottom of the rotor l extending in the axial direction f\i.

3 is a wave-shaped guide groove formed continuously along the circumferential direction on the outer circumferential surface of the rotor 1, and its unfolded state is as shown in FIG.

Reference numeral 4 denotes cylinders, and six cylinders are arranged on the same circumference at predetermined intervals on the outside of the rotor 1.

A roller 7 is pivotally supported at the lower end of a connecting rod 6 connected to a piston 5 of this cylinder 4, and this roller 7 is adapted to fit into a guide groove 3 formed on the outer periphery of the rotor 1 and move.

Furthermore, the lower end of the connecting rod 6 is bifurcated into two, and a guide roller 8.8 is pivotally supported at each tip.

9! /'i rotor 1. A cylindrical holding member with an inner diameter larger than the holding member 9, which is provided on the outside of the holding member 9.
Corresponding to the cylinder 4, six vertical grooves 10 are formed at equal intervals, and a concave groove 11111 is provided on the inner edge surface of the vertical groove 10, in which a guide roller 8.8 is supported from both sides, and the piston 5 The connecting rod 60 to which it is attached is regulated in the circumferential direction (horizontal direction) and guided in its axial direction (vertical direction).

Next, to explain the operation of the power conversion device, as the rotor 1 rotates, the roller 7 guided by the wave-shaped guide groove 3 moves in the circumferential direction while being restricted by the concave groove 11 of the pressing member 9. It is pulled down in the figure along the waveform shape. As the roller 7 descends, the piston 5 descends via the connecting rod 6, and air is sucked into the cylinder 4 through an intake pulp (not shown).

Next, the kite groove 30 heals into a wave-like shape and the piston 5 rises, and when it reaches top dead center, it is ignited and explodes, and the piston 5
is pushed down, and the pushing down force at this time is transmitted from the rolling roller 7 to the wave-shaped guide groove 3, giving rotational force to the rotor 1, and rotating the rotating shaft 2 connected thereto.

By performing such operations at different times in each cylinder 4, the rotor 1 rotates smoothly,
Multiphase reciprocating motion can be converted into one rotational motion. In this case, the guide groove 3 is shaped so that the bottom dead center of the intake air is lower than the bottom dead center of the explosion, and the top dead center of the exhaust air is higher than the top dead center of the compression, as shown in Figure 3. It is.

Therefore, according to the above conversion device, without using a crank mechanism,
Since the reciprocating motion of the piston 5 is converted into rotational motion by the rotor 1 formed with the wave-shaped guide groove 3, the structure is extremely simple and lightweight, and the height of the engine body is also slightly longer than the piston's 50 strokes. can be suppressed to Moreover, since the rotor l can also serve as a flywheel, the overall size can be reduced, and as a result, the number of revolutions can be increased.

In addition, since the amplitude and cycle of the wave-shaped guide groove 3 can be changed for each process, the intake, compression, explosion, and exhaust processes can be performed under optimal conditions. complete combustion.

In addition, by selecting the curve (inclination @) of the guide groove 3, it is possible to increase the shaft rotational force near the top dead center, which is small in the crank mechanism, and to set a large descending speed of the dying ton 5 immediately after an explosion. Due to the high temperature of the combustion gases,
It is also possible to reduce the amount of nitrogen oxides generated by shortening the time in the high pressure state.

Furthermore, since the connecting rod 6 only moves in one direction, up and down, the thrust force /I'i applied to the inner wall of the cylinder 4 by the piston 5 is extremely small, and the movement of the piston 5 is smooth, and wear and tear can be reduced. .

In the above embodiment, the case of a human-cylinder engine in which six cylinders 4 are arranged is shown, but any number may be used.

Further, contrary to the above embodiment, a wave-shaped guide groove 3 may be formed on the inner circumference of the rotor 1, and the cylinder 4 may be arranged inside the rotor 1 so that the roller 7 rolls within the guide groove 3. . Further, the support structure for the connecting rod 6 is not limited to the above-described embodiment, and any structure may be used as long as it restricts movement in the circumferential direction (horizontal direction).

In addition, the above embodiment has shown a conversion installation in which rotational force is obtained using a large cylinder 4, but on the contrary, rotational force is applied to the rotating shaft 2 from the outside by a motor or the like.
The present invention can also be applied to a power conversion device from one-rotation motion to multi-phase reciprocating motion in which a large number of pistons 5 are driven up and down to operate as hydraulic control valves or relay contacts.

As explained above, according to the power conversion device 1 according to the present invention, by connecting a plurality of cylinders and a rotor provided with a wave-shaped guide groove without using a crank mechanism, multiphase reciprocating motion and rotational motion are achieved. Especially when applied to an engine, it has remarkable effects such as reducing size and weight, achieving high speed rotation, and allowing selection of optimal combustion conditions.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, and FIG. 1 is a perspective view of the device when applied to a 6-cylinder engine;
Figure 2 is an enlarged perspective view of the main part, and Figure 3 is an expanded view of the main part of the guide groove formed on the outer periphery of the rotor. This is diagram A. l... Rotor 2... Rotating shaft 3... Guide groove 4... Cylinder 5... Piston
6...Conrod 7...Roller 8
... Guide roller 9 ... Pressing member 10.
...Vertical groove 11... Concave groove Applicant's agent

Claims (1)

[Claims] A cylindrical rotor with a rotating shaft attached, a wave-shaped guide groove formed on the outer or inner circumference of the rotor and continuous in the circumferential direction, and a wave-shaped guide groove arranged on the same circumference on the outer or inner side of the rotor. a plurality of cylinders, a roller attached to the distal end side of the piston movement rod of the cylinder and rolling in the wave-shaped guide groove, and a roller provided on the outside or inside of the rotor to allow the rod to move vertically. A power conversion device comprising a supporting presser member.