JPH11343801A - Reciprocating piston engine and linking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linking mechanism almost generating no vibration nor noises, small in a friction loss high in machine efficiency, capable of being constituted to be compact and lightweight, and, used for a reciprocating piston compressor, a reciprocating piston pump, a press machine or the like. SOLUTION: The operations of at least a pair of pistons 11 and 11a moved in opposite directions in correlation with each other are converted into swinging rotational motions via a swing arm 15 having left and right parts equal to each other in mass and swinging rotational radius, then the motions are uniformly divided into two parts by connecting rods 43 and 43a and transmitted to a linking mechanism, and these are converted into the rotation of a rotary shaft 49 incorporated in the linking mechanism and then outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a link mechanism which can be used for an engine, a compressor, a pump, a press machine and the like.

[0002]

2. Description of the Related Art A reciprocating piston engine generally includes a piston linearly reciprocating in a cylinder, a connecting rod (hereinafter referred to as a connecting rod) having one end rotatably attached to the piston via a piston pin, and a connecting rod. And a crankshaft rotatably attached to the other end of the piston, and converts the linear reciprocating motion of the piston transmitted via the connecting rod into a rotary motion.

In the case of this conventional reciprocating piston engine,
When the piston is moved up and down, the connecting rod is inclined with respect to the reciprocating linear movement direction of the piston, so that the force applied to the piston causes collision between the piston and the cylinder and friction (piston slap), resulting in large vibration, noise and friction loss. It is a factor.

[0004] Further, vibration and noise are generated due to the unbalanced motion of the piston and the connecting rod due to the reciprocating mass of the connecting rod.
In a multi-cylinder reciprocating piston engine, vibration and noise are generated by a couple.

[0005]

The conventional reciprocating piston engine, the reciprocating piston compressor, the reciprocating piston pump, and the crank mechanism of the press machine have the above-mentioned drawbacks. A reciprocating piston engine, a reciprocating piston compressor, a reciprocating piston pump, a press machine, and the like, which have no disadvantages, that is, generate little vibration and noise, have low friction loss, have good mechanical efficiency, and can be configured to be small and lightweight. It is an object to provide a link mechanism that can be used for a computer.

[0006]

According to the present invention, the operation of at least one pair of pistons which move in the opposite directions relative to each other is controlled by an oscillating arm via an oscillating arm having left and right portions having the same mass and oscillating radius of rotation. A reciprocating piston engine, wherein the reciprocating piston engine converts the motion into a rotary motion, transmits the motion to a link mechanism by equally dividing the motion into two hands by a connecting rod, and converts the motion into rotation of a rotary shaft incorporated in the link mechanism. The above problem has been solved by a link mechanism such as the above. The motion trajectory of the piston may be linear or arc-shaped.

In the above means, when the movement trajectory of the piston is linear, the inclination of the connecting rod with respect to the reciprocating linear movement direction of the piston is small, so that the piston side pressure is generated very little. In the case where is a circular arc, no piston side pressure is generated, and in any case, vibration and mechanical noise hardly occur.

Further, according to the present invention, the swing type rotary motion of the swing rotary shaft is equally divided into two hands by a connecting rod, transmitted to the link mechanism, converted into rotation of the rotary shaft incorporated in the link mechanism, and output. We propose a link mechanism characterized by

According to this means, the torque of the swinging rotary shaft is uniformly transmitted to the crankshaft by the connecting rod, so that the unbalanced motion is completely eliminated. Furthermore, vibration and noise are reduced by strengthening rigidity by reducing the connecting rod and crank rotation radius, and friction loss is reduced by reducing the diameter of the crankpin and crank rotation shaft. A mechanism that converts motion into rotary motion or a mechanism that converts rotary motion into reciprocal motion can be configured.

[0010]

Embodiments of the present invention will be described with reference to the accompanying drawings. First, referring to the embodiment shown in FIGS. 1 and 2, what is shown therein is an engine in which cylindrical pistons 11 and 11a reciprocate linearly. The cylinder case,
Reference numerals 2 and 2a denote valve mechanisms.

Connecting rods 13, 13a are rotatably attached to the cylindrical pistons 11, 11a via piston pins 12, 12a. Two cylindrical pistons 1
1, 11a and connecting rods 13, 13a have the same mass and shape, respectively. As will be described later, the connecting rods 13 and 13a are slightly inclined and the cylindrical pistons 11 and 13a are inclined.
It moves following the movement direction of 11a.

The other ends of the connecting rods 13 and 13a are rotatably attached to both ends of a swing arm 15 via swing arm pins 14 and 14a. The swing arm 15 is supported by a swing rotation shaft 40 fixed to the center thereof.
Therefore, the oscillating rotation shaft 40 has the cylindrical pistons 11, 11.
In accordance with the vertical movement of “a”, it is oscillated and rotated via the oscillating arm 15. The right and left portions of the swing rotation shaft 40 in the swing arm 15 have the same mass and the same swing rotation radius. In the illustrated example, a pair of cylindrical pistons is provided, but the present invention is not limited to this, and a plurality of cylindrical pistons may be provided or a plurality of the mechanisms may be connected.

A swinging rotation arm 41 is fixedly mounted on the swinging rotation shaft 40, and connecting rods 43, 43a are rotatable at both ends of the swinging rotation arm 41 via swinging rotation arm pins 42, 42a. Attached to. The swing rotation radii of the arms on both sides of the swing rotation arm 41 and the mass and shape of the connecting rods 43, 43a are made equal.
The other end of the connecting rod 43, 43a has a crank pin 44,
44a is rotatably attached to the crank pin 44,
Reference numeral 44a is eccentrically connected to the disk cranks 45, 45a, respectively.

The disk cranks 45, 45a are supported by crank rotation shafts 46, 46a attached to the center of the disk cranks 45, 45a.
6, 46a are distributed and rotated with equal torque. Drive gears 47, 47 are provided at ends of the crank rotation shafts 46, 46a.
The drive gear 47, 47a meshes with a driven gear 48 installed on a rotating shaft 49 as an output shaft, and drives the driven gear 48 to rotate.

The operation of the above configuration will be described. As the cylindrical pistons 11 and 11a move up and down in opposite directions, the swing arm 15 makes a seesaw motion about the swing rotary shaft 40, and as a result, the swing The rotation shaft 40 makes an oscillating rotation. The movement is equally transmitted to the connecting rod 43 side and the connecting rod 43a side via the swinging rotation arm 41, and is converted into the rotational movement of the disk cranks 45, 45a, respectively. Further, the rotational motion of the disk cranks 45, 45a is transmitted to the drive gears 47, 47a, and is combined to rotationally drive the driven gear 48 and the rotary shaft 49 integrated therewith.

In the above operation, the cylindrical piston 11,
The inclination of the connecting rods 13 and 13a during the vertical movement of 11a is small because it is within the range of the trajectory of the swing arm pins 14 and 14a. Therefore, the piston side pressure caused by the inclination of the connecting rods 13 and 13a is extremely small, and the vibration, noise and friction loss due to the large piston side pressure are extremely reduced, and the mechanical efficiency is considerably improved.

The left and right cylindrical pistons 11, 11
a, piston pins 12, 12a, connecting rods 13, 13
a, the reciprocating masses of the swing arm pins 14, 14a and the swing arm 15 are substantially equal, so that there is almost no unbalanced motion in the piston portion. Further, in the operation of the mechanism for converting the oscillating rotary motion into the rotary motion, the power of the oscillating rotary shaft 40 is evenly transmitted to the crank rotary shafts 46, 46a by the connecting rods 43, 43a, and the driving gears 47, 47a and the driven gears are driven. 48, the rotary shaft 49 is driven to rotate.
Unbalanced movement does not occur. And connecting rod 43,
The transmission of force by 43a is on a plane, and no couple is generated.

In the present invention, due to the above operation, the friction loss due to the piston side pressure is reduced and the mechanical efficiency is improved, and the vibration and noise due to the inertial force and the vibration and noise due to the couple are almost eliminated.

Next, the embodiment shown in FIGS. 3 to 5 will be described. In this embodiment, arc-shaped pistons 21 and
Reference numeral 1a denotes an engine which reciprocates in an arc.
1a indicates a cylinder case, and 2a indicates a valve mechanism.

A swing arm 22 and a counterweight 23 are fixedly attached to the arc-shaped pistons 21 and 21a, and a swing center portion thereof, that is, a counterweight 2 is provided.
3 is supported by an oscillating rotation shaft 40 fixed at the center. The oscillating rotation shaft 40 is oscillatingly rotated via the oscillating arm 22 as the arcuate pistons 21 and 21a move in the arc direction. The left and right portions of the swing rotation shaft 40 in the swing arm 22 have the same mass and shape. In addition,
In the illustrated example, a pair of arc-shaped pistons is installed, but the invention is not limited to this, and a plurality of arc-shaped pistons may be installed or a plurality of the mechanisms may be connected.

A swinging rotation arm 41 is fixedly mounted on the swinging rotation shaft 40, and connecting rods 43, 43a are rotatable at both ends of the swinging rotation arm 41 via swinging rotation arm pins 42, 42a. Attached to. The swing rotation radii of the arms on both sides of the swing rotation arm 41 and the mass and shape of the connecting rods 43, 43a are made equal.
The other end of the connecting rod 43, 43a has a crank pin 44,
44a is rotatably attached to the crank pin 44,
Reference numeral 44a is eccentrically connected to the disk cranks 45, 45a, respectively.

The disk cranks 45, 45a are supported by crank rotation shafts 46, 46a attached to the center of the disk cranks 45, 45a.
6, 46a are distributed and rotated with equal torque. Drive gears 47, 47 are provided at ends of the crank rotation shafts 46, 46a.
The drive gear 47, 47a meshes with a driven gear 48 installed on a rotating shaft 49 as an output shaft, and drives the driven gear 48 to rotate.

The operation of the above configuration will be described. As the circular-arc pistons 21 and 21a circularly move in opposite directions, the rocking arm 22 makes a seesaw motion about the rocking rotary shaft 40, and as a result, the rocking The dynamic rotating shaft 40 makes an oscillating rotary motion. The movement is equally transmitted to the connecting rod 43 side and the connecting rod 43a side via the swinging rotation arm 41, and is converted into the rotational movement of the disk cranks 45, 45a, respectively. Further, the rotational motion of the disk cranks 45, 45a is transmitted to the drive gears 47, 47a, and is combined to rotationally drive the driven gear 48 and the rotary shaft 49 integrated therewith.

In the above operation, the arc-shaped piston 21,
The piston side pressure during the circular motion of 21a is eliminated, and vibration, noise and friction loss due to the large piston side pressure are eliminated, and the mechanical efficiency is greatly improved.

The left and right arc-shaped pistons 21, 21
a, there is no unbalanced movement of the swing arm 22 and the counterweight 23. Further, in the operation of the mechanism for converting the oscillating rotary motion into the rotary motion, the power of the oscillating rotary shaft 40 is evenly distributed by the connecting rods 43 and 43a.
6, 46a, and is driven to rotate by the rotating shaft 49 by the driving gears 47, 47a and the driven gear 48, so that unbalanced motion does not occur. And connecting rods 43, 43a
The transmission of force by the force is on a plane, and no couple is generated.

In the present invention, by the above-mentioned operation, friction loss due to piston side pressure is eliminated and mechanical efficiency is greatly improved. Further, vibration and noise due to inertial force and vibration and noise due to couple are eliminated. Further, since the reciprocating mass of the circular piston or the like can be designed to be less than half of the reciprocating mass of the conventional reciprocating piston engine, the output performance is greatly improved.

Next, the embodiment shown in FIGS. 6 to 8 will be described. In this embodiment, the airfoil pistons 31, 3
1a is an engine which is a double-acting engine that performs a circular reciprocating motion,
It can be called a positive displacement turbine engine. In the figure, 1, 1a denotes a cylinder case, 2, 2a, 2b, 2c.
Indicates a valve mechanism.

A swing arm 32 is fixedly attached to the wing-shaped pistons 31 and 31a, and the wing-shaped pistons 31 and 31a are rotated by a swing rotation shaft 40 fixed to the center of the swing.
a is supported. The oscillating rotation shaft 40 includes the airfoil piston 3
The swing arm 3 moves in accordance with the movement of the first and 31a in the arc direction.
And 2 is driven to rotate. The right and left portions of the swing rotation shaft 40 in the swing arm 32 have the same mass and shape. In the illustrated example, one pair of wing-shaped pistons is provided, but the present invention is not limited to this, and there may be a case where a large number of pairs, a plurality of wing-type pistons are provided, or a plurality of the mechanisms are connected.

A swinging rotation arm 41 is fixedly attached to the swinging rotation shaft 40. At both ends of the swinging rotation arm 41, connecting rods 43, 43a are rotatable via swinging rotation arm pins 42, 42a. Attached to. The swing rotation radius of the swing rotation arm 41 and the connecting rods 43, 43
The mass and shape of “a” are the same. Connecting rod 4
Crank pins 44, 44a are rotatably mounted on the other ends of the crankshafts 3, 43a, and the crankpins 44, 44a are eccentrically connected to the disk cranks 45, 45a, respectively.

The disk cranks 45, 45a are supported by crank rotation shafts 46, 46a attached to the center of the disk cranks 45, 45a.
6, 46a are distributed and rotated with equal torque. Drive gears 47, 47 are provided at ends of the crank rotation shafts 46, 46a.
The drive gear 47, 47a meshes with a driven gear 48 installed on a rotating shaft 49 as an output shaft, and drives the driven gear 48 to rotate.

The operation of the above configuration will be described. As the wing-shaped pistons 31 and 31a circularly move in opposite directions, the swing arm 32 makes a seesaw motion about the swing rotary shaft 40, and as a result, the swing The dynamic rotating shaft 40 makes an oscillating rotary motion. The movement is equally transmitted to the connecting rod 43 side and the connecting rod 43a side via the swinging rotation arm 41, and is converted into the rotational movement of the disk cranks 45, 45a, respectively. Further, the rotational motion of the disk cranks 45, 45a is transmitted to the drive gears 47, 47a, and is combined to rotationally drive the driven gear 48 and the rotary shaft 49 integrated therewith.

In the above operation, the airfoil pistons 31, 3
The piston side pressure at the time of the circular motion 1a is eliminated, and vibration, noise and friction loss due to the large piston side pressure are eliminated, and the mechanical efficiency is greatly improved.

Further, left and right wing-shaped pistons 31, 31a,
There is no unbalanced movement of the swing arm 32. Further, in the operation of the mechanism for converting the oscillating rotary motion into the rotary motion, the power of the oscillating rotary shaft 40 is evenly transmitted to the crank rotary shafts 46, 46a by the connecting rods 43, 43a, and the driving gears 47, 47a and the driven gears are driven. Since the rotary shaft 49 is driven to rotate by the rotary shaft 48, no unbalanced motion occurs. And
The transmission of force by the connecting rods 43 and 43a is on a plane, and no couple is generated.

In the present invention, the above-mentioned operation eliminates friction loss due to piston side pressure, and greatly improves mechanical efficiency. Further, vibration and noise due to inertial force and vibration and noise due to couple are eliminated. Further, since the reciprocating mass of the wing piston and the like can be designed to be one-fourth or less of the reciprocating mass of the conventional reciprocating piston engine, the output performance is greatly improved. And, since it can be designed to be less than one third of the volume of the conventional reciprocating piston engine by the double-acting type, the size, weight and cost are reduced.

Finally, the embodiment shown in FIGS. 9 and 10 will be described. This embodiment is a link mechanism that converts a reciprocating motion into a rotary motion or a rotary motion into a reciprocating motion.

A swinging rotation arm 41 is fixedly mounted on the swinging rotation shaft 40. At both ends of the swinging rotation arm 41, connecting rods 43, 43a are rotatable via swinging rotation arm pins 42, 42a. Attached to. The swing rotation radii of the arms on both sides of the swing rotation arm 41 and the mass and shape of the connecting rods 43, 43a are made equal.
The other end of the connecting rod 43, 43a has a crank pin 44,
44a is rotatably attached to the crank pin 44,
Reference numeral 44a is eccentrically connected to the disk cranks 45, 45a, respectively.

The disk cranks 45, 45a are supported by crank rotation shafts 46, 46a attached to the center of the disk cranks 45, 45a.
6, 46a are distributed and rotated with equal torque. Drive gears 47, 47 are provided at ends of the crank rotation shafts 46, 46a.
The drive gear 47, 47a meshes with a driven gear 48 installed on a rotating shaft 49 as an output shaft, and drives the driven gear 48 to rotate.

The operation of the above configuration will be described. When the swinging rotary shaft 40 makes a swinging rotary movement, the movement is equally transmitted to the connecting rod 43 and the connecting rod 43a via the swinging rotating arm 41. And converted into rotational motions of the disk cranks 45 and 45a, respectively. Further, the rotational motion of the disk cranks 45, 45a is controlled by the drive gears 47, 47.
The driven gear 48 and the driven gear 48 and the rotary shaft 49 integrated therewith are rotationally driven.

In the above operation, the power of the oscillating rotary shaft 40 is evenly transmitted to the crank rotary shafts 46, 46a by the connecting rods 43, 43a, and is driven to rotate by the rotary shaft 49 by the driving gears 47, 47a and the driven gear 48. Therefore, no unbalance movement occurs. And connecting rods 43, 4
The transmission of force by 3a is on a plane, and no couple is generated.

In the present invention, vibration and noise due to inertial force and vibration and noise due to couple are eliminated by the above operation. Also, since the connecting rod and the turning radius of the crank can be designed to be small, rigidity is improved and vibration and noise are reduced. Further, since the diameter of the crankpin and the crankshaft can be designed to be small, friction loss is reduced. Therefore, low vibration,
A mechanism for converting a reciprocating motion with low noise and high efficiency into a rotary motion or a rotary motion into a reciprocating motion is obtained.

[0041]

The present invention is as described above. According to the reciprocating piston engine according to the present invention, the vibration and noise due to the piston slap and couple are eliminated, the piston side pressure is eliminated, and the crank pin and Due to the small-diameter design of the crank shaft and the double-acting type, friction loss can be greatly reduced and mechanical efficiency can be greatly improved. Further, the reciprocating mass can be designed to be significantly lighter than the conventional reciprocating piston engine, and the output performance can be greatly improved. Since the design can be reduced to one third or less in volume as compared with the conventional reciprocating piston engine, it is possible to realize small size, light weight and low cost.

Then, while suppressing the consumption of fuel and electric power, CO
2 It can greatly contribute to emission reduction.

[Brief description of the drawings]

FIG. 1 is a sectional view and a front view of a piston part of a cylindrical piston engine according to the present invention.

FIG. 2 is a plan view of a cylindrical piston engine according to the present invention.

FIG. 3 is a cross-sectional view of a piston part of the arc-shaped piston engine according to the present invention.

FIG. 4 is a front view of an arc-shaped piston engine according to the present invention.

FIG. 5 is a plan view of an arc-shaped piston engine according to the present invention.

FIG. 6 is a sectional view of a piston portion of the bladed piston engine according to the present invention.

FIG. 7 is a front view of the bladed piston engine according to the present invention.

FIG. 8 is a plan view of an airfoil piston engine according to the present invention.

FIG. 9 is a front view of the link mechanism according to the present invention.

FIG. 10 is a plan view of a link mechanism according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cylindrical piston 11a Cylindrical piston 12 Piston pin 12a Piston pin 13 Connecting rod 13a Connecting rod 14 Swing arm pin 14a Swing arm pin 15 Swing arm 21 Arc-shaped piston 21a Arc-shaped piston 22 Swing arm 23 Counterweight 31 Wing-shaped piston 31a Airfoil piston 32 Swing arm 40 Swing rotation shaft 41 Swing rotation arm 42 Swing rotation arm pin 42a Swing rotation arm pin 43 Connecting rod 43a Connecting rod 44 Crank pin 44a Crank pin 45 Disk crank 45a Disk crank 46 Crank rotation shaft 46a Crank rotation shaft 47 Drive gear 47a Drive gear 48 Driven gear 49 Rotation shaft

Claims (4)

[Claims] 1. A reciprocating linear motion of at least a pair of cylindrical pistons which move in opposite directions relative to each other is converted into a oscillating rotary motion via a oscillating arm having left and right portions having equal mass and oscillating rotational radius. The reciprocating piston engine is characterized in that, after the movement, the movement is equally divided into two hands by a connecting rod, transmitted to the link mechanism, converted into rotation of a rotary shaft incorporated in the link mechanism, and outputted. 2. A reciprocating circular motion of at least one pair of circular pistons moving in a correlatively opposite direction is converted into a rocking rotary motion via a rocking arm having left and right portions having the same mass and rocking rotary radius. The reciprocating piston engine is characterized in that, after the movement, the movement is equally divided into two hands by a connecting rod, transmitted to the link mechanism, converted into rotation of a rotary shaft incorporated in the link mechanism, and outputted. 3. A reciprocating circular motion of at least one pair of wing-shaped pistons moving in opposite directions relative to each other is converted into a oscillating rotary motion via a oscillating arm having left and right portions having the same mass and oscillating rotational radius. After that, the movement is equally divided into two hands by the connecting rod and transmitted to the link mechanism,
A reciprocating piston engine which converts the rotation into the rotation of a rotating shaft incorporated in the link mechanism and outputs the converted rotation. 4. The method according to claim 1, wherein the swing type rotary motion of the swing rotary shaft is equally divided into two parts by a connecting rod, transmitted to the link mechanism, converted into rotation of the rotary shaft incorporated in the link mechanism, and output. Characteristic link mechanism.