JPH0361602A - Driving device with no side pressure generated in reciprocating mechanism - Google Patents

Abstract

PURPOSE:To prevent the generation of side pressure due to a reciprocating mechanism by oscillatably supporting a cylinder in which a piston connected to a crank pin is installed to a supporting base. CONSTITUTION:A piston 1 is connected to a crank pin 3 by means of a bearing 2. A cylinder 4 in which the piston 1 is installed is oscillatably supported to a supporting base 7 through a supporting shaft 5 by means of a bearing 6. A center line of the bearing 2 is set perpendicularly to the axis line of the piston 1, while the axis line of the supporting shaft 5 is set perpendicularly to the axis line of the cylinder 4 and parallelly to the center line of the bearing 2. Wherever the position of the crank pin 3 on a circular orbit around a crank shaft made by the rotation of the crank, the center line connecting the crank pin 3 to the piston 1 and the axis line of the cylinder 4 is on the same linear line. Then, the cylinder 4 oscillates with the supporting shaft 5 bearing a fulcrum. A force is applied to the piston 1 in the direction of the axis line of the cylinder 4, so that side pressure is not generated to the cylinder 4.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a drive device in which no side pressure is generated to the cylinder in a reciprocating mechanism, and the valve train mechanism is also driven by a drive source different from conventional ones. It is capable of operating.

(Prior art and problems) - In the configuration of a drive device using a conventional reciprocating mechanism, a connecting rod is connected to a crank pin and a piston pin. Therefore, the piston pin and the small end of the connecting rod are affected by the frictional resistance due to the sliding movement of the crank during operation, and the frictional resistance between the cylinder and the piston due to the lateral pressure caused by the tilting of the connecting rod with respect to the axis of the cylinder. Mechanical losses resulted in reduced machine efficiency.

(Means for solving the problem) This mechanism can be driven without using a hook rod,
No side pressure is created on the cylinder.

Therefore, it can be designed as a device or engine that can be expected to save energy or reduce fuel consumption due to its extremely high mechanical efficiency.

Figure 1 describes its configuration. The piston l is mounted on the skirt portion at one end with the center line of the bearing 2 perpendicular to the axis of the piston 1, and the crank pin 3
is connected to. The crank arm is balanced with a balance weight. At one end of the cylinder 4 in which the piston 1 with the above configuration is installed, the axial center line of the support shaft 5 is set perpendicular to the axial center line of the cylinder 4 and parallel to the center line of the bearing 2. Freely swinging support platform 7
It is fixed to .

The operating mode of the above configuration is that no matter where the crank bin 3 moves in a circular orbit drawn with the crankshaft as the axis due to the rotation of the crank, the center line connecting the crank bin 3 and the piston 1 In order to maintain a straight line with the axis of the cylinder 4, the cylinder 4 swings about the support shaft 5 as a fulcrum. As a result, the direction of the force acting on the piston 1 is directed toward the axis of the cylinder 4, so that no side pressure is generated against the cylinder.

Originally, lateral pressure is a function of the reaction force exerted by the connecting rod on the piston, and the magnitude of the reaction force changes depending on the pressure acting on the piston and the angle formed between the connecting rod and the cylinder. This angle can be reduced by lengthening the connecting rod for the same crank radius or by offsetting the axial center position of the cylinder.
In high-speed engines, the inertial force increases, which is actually a disadvantage. Increasing the length of the rod had its limits due to inertia and increased overall height, so in any case it was not possible to eliminate lateral pressure.

This mechanism has the advantage that by eliminating side pressure, there is no wear (ovalization) of the cylinder and piston, and the roundness can be maintained, so that sealing performance can be maintained.

(Configuration and Effects of Embodiment) Next, the configuration shown in FIG. 2 will be described as an embodiment of this mechanism.

The cylinder 4 is provided with a pair of notched grooves 8 parallel to the axis of the cylinder 4, and within the notched grooves 8, a crank pin 3 connected to the piston 1 by a bearing 2 can be freely installed. I am being

The feature of the above structure is that the length from the crank pin 3 to the tip of the piston 1 can be reduced by about 40% compared to the conventional one using a funnel rod.

In other words, in the conventional model, the length of the rod is 1.6 of the process amount.
Since it requires twice to 2.3 times the length, the length of the conventional one is process amount x 1.6 to 2.3 + length from the piston bottle to the tip of the piston -, whereas the length of this configuration is , the required length of the part on which the process quantum piston ring is attached depends on the comparison result.

Conventionally, when the connecting rod is shortened, it hits the cylinder when it is at its maximum inclination. Shortcomings such as an increase in lateral pressure occurred as the length was made shorter.

Even if this configuration is 40% shorter than the conventional one, it does not have the above drawbacks and the overall height can be made compact. It can increase the strength against bending.

The weight of moving parts can be reduced. It has the following advantages.

Next, the chair 10 made using the swing of the cylinder 4 of this mechanism
There is a passage hole that communicates with the cylinder 4, and the bearing 6 has an orifice 9 that communicates with the suction and discharge pipes. The orifice is periodically opened and closed by swinging the cylinder 4 about the support shaft 5. In the case of ball-shaped pulp produced by conventional hydraulic or pneumatic equipment, there is a phenomenon in which the valve operation cannot follow the stroke of the piston during suction and discharge, especially when using equipment such as metering pumps that require accurate discharge. However, there was a drawback that the rotation RPM could not be increased above a certain value.

Since the device is a valveless mechanism and its operation is entirely mechanical, it does not suffer from the drawbacks mentioned above.

There is also little noise and vibration. There is an advantage that the cross-sectional area of the fluid passage can be increased.

Figure 4 describes the rotary type configuration. The orifice 14 of the support shaft 5 communicates with the suction and discharge pipes. Bevel gear 1 that meshes with bevel gear 11 attached to the cylinder
2 to rotate the cylinder head (rotary valve).

Its driving source depends on the swinging of the cylinder 4 about the support shaft 5.

The above method has almost the same effect as the method shown in FIG. 3, and the compression chamber can be made compact.

The driving source for opening and closing the valve 15 is based on the swinging of the cylinder 4 about the support shaft 5. The above-mentioned feature of the valve device is a method that uses the swinging of the cylinder 4, so it is not suitable for 4-cycle operation due to only the intake and exhaust steps. However, it can fully function as an intake/exhaust mechanism for a two-stroke engine, which is said to be the next generation engine.

Incidentally, since the cylinder 4 is built into the crankcase, noise and vibration isolation are good. It should be noted that the cooling effect of the cylinder by splashing lubricating activated oil is good.

[Brief explanation of drawings]

FIG. 1 is an overall sectional view of the present invention. FIG. 2 is an overall perspective view showing a cylinder having a notched groove according to the present invention. FIG. 3 is a partial cross-sectional view of the valveless device of the present invention. FIG. 4 is a partial sectional view of the rotary valve device of the present invention. FIG. 5 is a partial sectional view of the valve train of the present invention.

Claims (1)

[Claims] 1) The center line of the bearing 2 attached to the lower part of the piston 1 is
A cylinder 4 containing a piston 1 installed perpendicularly to the axis of the piston 1 and connected to a crank pin 3
The axial center line of the support shaft 5 is provided perpendicular to the axial center line of the cylinder 4 and parallel to the center line of the bearing 2, and is fixed to the support base 7 by a bearing 6 so as to be freely swingable. A drive device that does not generate side pressure in the reciprocating mechanism. 2) The cylinder 4 has a pair of notched grooves 8 located parallel to the axis of the cylinder 4, and the crank pin 3, which connects the piston 1 by a bearing 2 mounted on the lower part of the piston 1, has a pair of notched grooves 8 located in parallel to the axis of the cylinder 4. 2. The drive device according to claim 1, wherein the drive device does not generate side pressure in a reciprocating mechanism. 3) The orifice 9 provided in the bearing 6 and the orifice 10 of the support shaft 5 connected to the cylinder 4 are periodically opened and closed by the swinging of the cylinder 4 about the support shaft 5. A drive device in which no side pressure is generated in a reciprocating mechanism according to claim 1 or 2. 4) Bevel gear 11 attached to bearing 6 and cylinder
A bevel gear 12 attached to the head meshes with the support shaft 5
The cylinder head is rotated by the swinging of the cylinder 4 about the axis, and the orifice 13 provided in the cylinder head and the orifice 14 provided in the support shaft 5 are periodically opened and closed. A drive device in which no side pressure is generated in a reciprocating mechanism according to claim 1 or 2. 5) To operate the valve 15 mounted on the support shaft 5, the cylinder 4 swings and meshes with the bevel gear 16 fixed to the support base 7.The cam shaft 19, which has the cam 18, is operated via the bevel gear 17 to operate the cam. 3. A drive device in which side pressure is not generated in a reciprocating mechanism according to claim 1 or 2, characterized in that 18 opens and closes the valve 15.