KR19990081644A - Coaxial Reciprocating Engine - Google Patents

Abstract

The present invention relates to a coaxial reciprocating engine in which an expansion and contraction working chamber is alternately formed in a cylinder formed in a housing assembly in a process of periodically moving a plurality of pistons formed on an outer circumference of a rotor to move closer to or away from each other. The coaxial reciprocating engine is composed of first and second circular plates 21 and 22, and the second circular plate 22 includes a first stator 20 to which a plurality of stators 25a to 25d are attached, and third and third ones. The second stator 20 ', which is composed of four circular plates 23 and 24, is disposed to face the first stator 20 at predetermined intervals, and surrounds the first and second stators 20 and 20'. The housing 40, the plate 10 disposed on the outside of the first stator 20, and the plurality of supports 11a to 11d to face the plate 10 so as to flow in the housing 40. A housing assembly composed of a cover 80 to prevent the cover; A rotor (30) having a plurality of pistons (32a to 32d) mounted inside the housing assembly to form an expansion and contraction working chamber; Guide rails 33 and 33 'having guide grooves 33a and 33a' and fixed to an inner surface of the rotor 30; Sliders 56 and 56 'which move up and down along the guide grooves 33a and 33a' of the guide rails 33 and 33 '; Ball housings 55 and 55 'which transmit the movement of the sliders 56 and 56' to the rotational movement of the drive shafts 52 and 52 'engaged with the output shaft 54a.

Description

Coaxial Reciprocating Engine

The present invention relates to a coaxial reciprocating engine, and more particularly, an expansion and contraction working chamber in a cylinder formed in a housing assembly in a process in which a plurality of pistons formed on the outer periphery of the rotor are periodically moved to move closer to or away from each other with respect to the stator. It is alternately formed, and relates to a coaxial reciprocating engine for transmitting the rotational force of the rotor to the output shaft using a material joint means.

The most widely used engines for automobiles and various industrial engines include reciprocating piston engines such as diesel engines and gasoline engines. The reciprocating piston engine has four to eight cylinders, and has a structure obtained by converting the linear movement of the piston reciprocating up and down along the inside of the cylinder to the rotational movement of the crankshaft. The reciprocating piston engine of such a structure is equipped with a crank shaft or a cam shaft, etc., which is heavy overall and has a low volumetric efficiency. In addition, there is a need for a valve operating mechanism of a complicated structure for driving the intake and exhaust valves, there is a problem that the vibration and noise is large and expensive to manufacture.

Many types of coaxial rotary engines have been introduced as a way to compensate for the disadvantages of the reciprocating piston engine. Most of these have been proposed to provide an engine that is economical and lightweight in terms of manufacturing and fuel efficiency in order to reduce the fundamental drawbacks associated with conventional reciprocating piston engines. However, it is not useful for commercial purposes and most of them have not been commercialized. The closest internal combustion engine to the commercialization is the Wankel engine.

Bankell has attempted to apply it to automobiles because of its high performance feasibility. However, for a variety of reasons it has not been widely used as a replacement for conventional reciprocating piston engines, such as automotive engines and mass-produced industrial lightweight engines.

Many other types of rotary engines have been proposed. Some of these engines use external mechanisms to periodically move pistons moving inside the cylinder, while others use rotating ramps and cams as power trains to achieve the mechanical coupling of the required drive elements. .

However, all conventional rotary engines have a disadvantage that they cannot be mass-produced and have an inefficient structure in operation, and are unable to optimally distribute output in a normal operating state. In addition, there is a problem in that it requires a complicated manufacturing process and assembly process, and it is difficult to commercialize and operate in a complex and inefficient manner as a whole.

A conventional coaxial reciprocating engine for improving these problems is shown in FIG. 10 is a cross sectional view of a coaxial reciprocating engine disclosed in Korean Patent Application No. 1627 filed on January 21, 1998 by the present applicant. The overall configuration thereof includes a circular housing 120 having a plurality of stators 120a through 120d and a plurality of pistons 130a through 130d forming an expansion and contraction working chamber while moving between the stators 120a through 120d. A linear movement transmitted from the slider 136 via the rotor 130 having the rotor 130, a slider 136 sliding up and down along the slot hole 132 drilled in the rotor 130, and a rod 140. It consists of a miter gear 142 to convert the rotation to the output shaft 146 to be transmitted.

The conventional coaxial reciprocating engine having such a configuration has a structure that is theoretically sufficient to obtain the required power, but the overall strength is low because the housing is simply composed of a circular monolith. As a practical use, there is a problem that the wearability is lowered. In addition, since the slot hole is directly machined in the rotor, the rotor may be damaged by the large pressure applied during the explosion. In the process of converting the linear movement of the slider to the rotational movement of the drive shaft, appropriate movement switching means are not specifically disclosed. It is not necessary to specify this.

An object of the present invention devised to solve this problem is to make a cylinder assembly using a stator with a stator providing a plurality of cylinders, and then stator in the process of moving the piston and stator to move closer or farther from each other It is to provide a coaxial reciprocating engine that is configured to form an expansion and contraction working chamber in the cylinder of the liver to increase the overall strength and improve the fabrication and assembly.

It is another object of the present invention to provide a coaxial reciprocating engine having a material joint means capable of converting a linear movement of a slider moving up and down along a guide rail attached to the inside of a rotor to a rotational movement of a drive shaft.

Still another object of the present invention is to provide a coaxial reciprocating engine which is compactly formed by integrally forming a plurality of stators in a housing assembly and assembling a cover through a gasket on an upper portion of the housing assembly.

1 is an exploded perspective view showing the configuration of a coaxial reciprocating engine according to the present invention;

Figure 2 is a perspective view showing the assembled state of the coaxial reciprocating engine according to the present invention,

Figure 3 is an exploded perspective view showing a coupled state of the ball guide employed in the present invention,

4 is a cross-sectional view taken along the line A-A in FIG.

Figure 5 is a cross-sectional view showing a coupling state of the stator employed in the present invention,

6A to 6C are cross-sectional views taken along the line B-B in FIG. 2, respectively, showing an operating state of the coaxial reciprocating engine according to the present invention;

7A to 7D are schematic diagrams showing the trajectories of the ball guides respectively moved in the explosion order;

8 is an exploded perspective view showing the configuration of a coaxial reciprocating engine according to another embodiment of the present invention;

9A and 9B are perspective views showing a lubrication structure formed on the stator and the piston according to another embodiment of the present invention, respectively;

10 is a cross-sectional view showing a conventional coaxial reciprocating engine.

♣ Explanation of symbols for main part of drawing ♣

10: Plate 11a-11d: Support stand

20, 20 ': First and second stators 21 to 24: round plate

25a-25d: Stator 26, 26 ': Spacer

30: rotor 32a-32d: piston

33, 33 ': guide rail 33b, 33b: guide groove

40: housing 40a to 40d: intake port

42a to 42d: exhaust port 50: gear box

52, 52 ': Drive shaft 53, 53': Bevel gear

54: output shaft 55, 55 ': ball housing

56, 56 ': Slider 56a, 56a': Guideball

58, 58: guide slot 60: airtight

80: cover C1 to C4, C1 'to C4': chamber

An object of the present invention described above is to coaxially obtain power by allowing a plurality of pistons integrally formed on the outer circumference of the rotor to alternately form expansion and contraction working chambers in a cylinder formed between the stator and the stator as they approach or move away from each other with respect to the stator. In the reciprocating engine, the first and second circular plates, the second circular plate is composed of a first stator with a plurality of stators, and the third and fourth circular plates are arranged opposite to the first stator at a predetermined interval A second stator, a housing surrounding the first and second stators, a plate disposed outside the first stator, and a cover disposed to face the plate via a plurality of supports to prevent flow of the housing. A housing assembly; A rotor having a plurality of pistons mounted inside the housing assembly to form an expansion and contraction working chamber; A guide rail having a guide groove and fixed to an inner surface of the rotor; It is achieved by a coaxial reciprocating engine comprising a material joint means for transmitting the rotational movement of the rotor transmitted through the guide rail to the output shaft through the drive shaft.

According to another object of the present invention, a material joint means has a slider formed with a ball formed at one end thereof and a guide slot moving up and down along a guide groove at the other end thereof, and a slider into which a ball of the slider is inserted at the bottom thereof is extended from the slider. The extension is achieved by a coaxial reciprocating engine, characterized in that consisting of a ball housing is formed by a hinge fastening hole is rotatably coupled to the fastening hole of the flat portion.

Still another object of the present invention is to coaxially obtain power by allowing a plurality of pistons integrally formed on the outer circumference of the rotor to alternately form expansion and contraction working chambers in a cylinder formed between the stator and the stator as they approach or move away from each other with respect to the stator. A reciprocating engine comprising: a housing assembly having a plurality of stators attached to an inner wall thereof and a mounting hole formed on a flange thereof; A rotor having a plurality of pistons mounted inside the housing assembly to form an expansion and contraction working chamber; An enclosed body having a plurality of fastening holes formed at an edge thereof to be coupled to the stator, and having a through hole through which an output shaft passes; A cover having a mounting hole coupled to the mounting hole formed at the flange of the housing assembly and having a through hole at the center thereof, the output shaft penetrating therein, and having a plurality of intake and exhaust ports formed therein; A guide rail having a guide groove and fixed to an inner surface of the rotor; A slider for moving up and down along the guide groove of the guide rail; It is achieved by a coaxial reciprocating engine comprising a material joint means for transmitting the linear movement of the slider to the rotational movement of the drive shaft engaged with the output shaft.

Hereinafter, a coaxial reciprocating engine according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are respectively an exploded perspective view and an assembled perspective view showing the configuration of a coaxial reciprocating engine according to the present invention, Figure 3 is an exploded perspective view showing a coupling state of the ball guide employed in the present invention, Figure 4 2 is a cross-sectional view taken along line AA, and FIG. 5 is a cross-sectional view showing a coupling state of the stator employed in the present invention.

First, as shown in Figure 1, in a preferred embodiment of the present invention to implement a commercially available coaxial reciprocating engine to combine a plurality of parts integrally to make a housing assembly, and then the rotor inside the housing assembly A plurality of working chambers were formed by mounting 30, and a structure was installed in the rotor 30 to install material joint means for transferring the working days generated in the working chamber to the output shaft 54a.

Looking at this schematically, the plate 10 to which the plurality of supports 11a to 11d are fixed, the first stator 20 and the second stator 20 'having the plurality of stators 25a to 25d, and these A circular housing 40 enclosing the stators 20 and 20 ', a sealing body 60 sealingly coupled to the circular housing 40, and coupled to the plate 10 by supports 11a to 11d. A housing assembly composed of a cover 80; A rotor (30) mounted inside the housing assembly through a plurality of pistons (32a to 32b) to expand and contract the working chamber; Sliders 56 and 56 'which move up and down along guide grooves 33a and 33a' formed in guide rails 33 and 33 'fixed to the inner side of the rotor 30; It consists of a material joint means which transmits the linear motion of the sliders 56 and 56 'to the rotational motion of the drive shafts 52 and 52' engaged with the output gear 54 of the output shaft 54a.

Here, in the center of the plate 10 constituting the housing assembly, a bolt 12 for fixing the gear box 50 to which the drive shafts 52 and 52 'are rotatably mounted protrudes and extends vertically. A plurality of screw holes 14a to 14d to which the supports 11a to 11d attached to the corner portions of the plate 10 are respectively coupled to the holes 81a to 81d formed at the corner portions of the cover 80 at the time of assembly. ) Is formed. In the center of the receiving portion 82 of the cover 80 assembled to face the plate 10, a through hole 83 through which the output shaft 54a is formed is formed.

The first stator 20 seated on the plate 10 is composed of two circular plates 21 and 22. The first circular plate 21 is in close contact with the plate 10, and the second circular plate 22 is disposed at a predetermined distance from the first circular plate 21 via a spacer (26 ′ in FIG. 4). A plurality of stators 25a to 25d are attached to the second circular plate 22. These stators 25a to 25d are provided with a plurality of fastening holes 26a to 26d, which can be combined with the third circular plate 23 and the fourth circular plate 24 constituting the second stator 20 '. .

The same number of pistons 32a to 32d as the stators 25a to 25d are attached to the outer circumferential surface of the body 31 constituting the rotor 30. In addition, the body 31 is provided with mounting holes 31a, 31a 'corresponding to the mounting holes 33a, 33a' of the guide rails 33, 33 ', and guide rails 33, 33' on the inner circumferential surface thereof. It is possible to fix it firmly. The guide rails 33 and 33 'on which the guide grooves 33a and 33a' are formed at the time of assembly are disposed to face each other.

As described above, the second stator 20 'disposed to face the first stator 20 via the rotor 30 includes a third circular plate 23 and a fourth circular plate 24, and these circular plates ( A spacer 26 'is fitted between the 23 and 24. At the time of assembly, the ordinary bolt is inserted into the through holes 24a to 24d formed in the fourth circular plate 24 and the through holes 26a formed in the spacer 26 ', and then the third circular plate 23 is inserted. What is necessary is just to fix to the fastening holes 23a-23d formed in the hole. The fastening holes 28a to 28d alternately formed with the through holes 24a to 24d of the fourth circular plate 24 correspond to the through holes 61a to 61d formed on the sealing body 60. Snap it into place.

A through hole 63 having the same purpose as the through hole 83 formed in the cover 80 is formed at the center of the sealing body 60 so that the output shaft 54a can be fitted therein, and the through hole 63 is formed. The projecting portion 62 is inserted into a circle formed at the center of the third circular plate 23 and the fourth circular plate 24 of the rotor 30 to increase the sealing force at the time of assembly.

On the circumferential surface of the housing surrounding the first stator 20 and the second stator 20 ', a plurality of intake ports 40a to 40d and exhaust ports 42a to 42d are formed, and intake and exhaust pipes are not shown. Just connect In addition, the groove 41 is formed on one side, so that the sealing gasket 70 is inserted during assembly.

Sliders 56 and 56 'are inserted into the guide grooves 33a and 33a' of the guide rails 33 and 33 'fixed to the inner side of the rotor 30. The sliders 56 and 56 'constitute a material joint means for enabling power transmission in an eccentric rather than coaxial manner, with guide balls 56a and 56a' formed at one end and guide rails 33 and 33 'at the other end. Guide slots 58, 58 'are formed to move up and down along the guide grooves 33a and 33a'.

Ball seats 55a and 55a 'into which the balls 56a and 56a' of the sliders 56 and 56 'are inserted into the ball housings 55 and 55' which are coupled to the sliders 56 and 56 'so as to be diffracted. Is formed, and the extension portions 57 and 57 'extending from the sliders 55 and 55' correspond to the fastening holes 52a-1 and 52a-1 'of the flat portions 52a and 52a'. The balls 57a and 57a 'are formed, and the ball housings 55 and 55' are rotatably mounted to the flat portions 52a and 52a 'of the drive shafts 52 and 52' by a normal hinge.

Flat ends 52a and 52a 'having fastening holes 52a-1 and 52a-1' are provided at both ends of the drive shafts 52 and 52 'rotatably mounted to the gearbox 50. Bevel gears 53 and 53 'which are arranged to face each other in a state spaced at predetermined intervals are attached. Since the output gear 54 integrally formed with the output shaft 54a is disposed between the bevel gears 53 and 53 ', the rotational force of the rotor 30 transmitted through the material joining means is changed to an angle of 90 ° to output shaft ( 54a).

Figure 2 shows the assembled state of the coaxial reciprocating engine having such a configuration, the second stator 20 'and the cover 80 is shown in phantom for ease of understanding. The first stator 20 is integrally fixed to the plate 10, and the rotor 30 is disposed on the first stator 20, and then the second stator 20 ′ is coupled thereto. Outside the first stator 20 and the second stator 20 ', the housing 40 is fitted to provide a sealed working chamber. The gearbox 50 is installed in the rotor 30, and the output shaft 54a is protruded in the gearbox 50 to receive the rotational force of the rotor 30 generated during combustion.

As shown separately in FIG. 3, a mounting hole 33a is formed in the guide groove 33a of the guide rail 33 so that the guide rail 33 can be fixed to the inner circumferential surface of the rotor 30. do. One end of the slider 56 linearly moving up and down along the guide groove 33a is formed such that the guide slot 58 is slidable to transmit the rotational movement of the rotor 30 to the drive shafts 52 and 52 '. .

At the time of assembly, the slider 56 is coupled to the guide rail 33 at a right angle. The guide rails 33 are formed with slide portions 33a-1 and 33a-b which prevent one end portion of the slider 56 having the threaded portion 56c from being inserted into the guide groove 33a so as not to be separated. Accordingly, the guide slots 58 and 58 'slide while the slider 56 is moved up and down while slidingly contacting the slider portions 33a-1 and 33a-b.

4 is a cross-sectional view taken along the line A-A in FIG. 2, showing the assembled state of the coaxial reciprocating engine according to the present invention. In the drawing, the plate 10 is disposed from the left side, and the reinforcing member 98 is disposed on the inner surface of the plate 10, and then the gearbox 50 is fixed by using the bolt 12 and the nut 90. It was. In addition, the cover 80 is coupled to the supports 11a to 11d attached to the plate 10 by bolts 96, and the housing 40 is horizontally disposed between the plate 10 and the cover 80. The spacing of these members is kept constant. Both ends of the housing 40 are fitted with a sealing gasket 70.

The rotor 30 is rotatably mounted inside the coupled housing assembly, and the first circular plate 21 and the second circular plate 22 and the third circular plate 23 and the fourth circular plate are located outside the piston 32a. 24 is arrange | positioned.

The drive shafts 52 and 52 'are coupled in the vertical direction to rotate in a state supported by the bearings 92 and 92' in the middle gearbox 50, and in the horizontal direction by the bearing 94. The output shaft 54a is rotatably coupled. The flat portions 52a, 52a 'of the drive shafts 52, 52' are rotatably inserted into the extension portions 57, 57 'of the ball housings 55, 55' by the hinges 104, 104 '. Both ends of the drive shafts 52, 52 'can be linearly moved in the expansion grooves 57a, 57a' of the ball housings 55, 55 '. At one end of the ball housings 55 and 55 ', the balls of the sliders 56 and 56' are rotatably inserted.

Since the guide slots 58, 58 'of the sliders 56, 56' are mounted so as to slide in the guide grooves 33a formed in the guide rails 33, 33 ', the rotor 30 rotates. The guide slots 58, 58 'of the sliders 56, 56' are linearly moved along the guide grooves 33a and transmitted to the drive shafts 52, 52 'via the ball housings 55, 55' to rotate them. .

Figure 5 shows the coupling state of the stator employed in the present invention. By providing a plurality of cylinders, the stator 25a, which is integrally formed on the second circular plate 22 of the first stator 20, is secured to the inner surface of the housing 40 by bolts 100, 100 '. Is fixed. At this time, it is preferable to insert a sealing gasket between the stator 25a and the inner surface of the housing 40. In addition, the spacers 26 and 26 'are disposed between the first and second circular plates 21 and 22 and the third and fourth circular plates 23 and 24 constituting the first stator 20 and the second stator 20'. ) Is inserted. An oil hole 25a-1 is formed at the lower end of the stator 25a to supply lubricating oil to a friction element such as a piston of the rotor 30.

Next, FIGS. 6A to 6C are cross-sectional views taken along the line BB of FIG. 2, respectively, illustrating an operating state of the coaxial reciprocating engine according to the present invention, and FIGS. 7A to 7D are views of ball guides respectively moved in the explosion order. A schematic representation of the trajectory.

6A to 6C, four cylinders provided by four stators are formed in the housing assembly of the coaxial reciprocating engine according to the present invention, and these cylinders are provided with a total of eight working chambers, two each. For the purpose of explanation, the operation process of the coaxial reciprocating engine according to the present invention will be described with the state where the first piston 32a disposed between the first stator 25a and the second stator 25b is moved. . The operation of the second to fourth pistons 32a to 32d, which are not described, is only time-dependent according to the explosion order, and of course, the operation is performed according to the same principle as the first piston 32a.

First, as shown in FIG. 6A, the first piston 32a is positioned between the first stator 25a and the second stator 25b while the engine is stopped. The guide slot 58 of the slider 56 shown by the circle is located in the upper end of the guide groove 33a.

When the driver starts in such a state, external power such as a start motor is transmitted to the sliders 56 and 56 'through the drive shafts 52 and 52', and at the same time, the mixer is provided in the first chamber C1 of the first cylinder. Is supplied, and the guide slots 58, 58 'of the sliders 56, 56' are positioned along the guide groove 33a as shown in Fig. 7B. At this time, in FIG. 6B, the mixer introduced into the first chamber C1 through the first intake port 40a while the first piston 32a moves from the second stator 25b toward the first stator 25a is disposed. The guide slots 58, 58 'of the sliders 56, 56' are moved toward the lower end of the guide groove 33a. The mixer is compressed to the maximum at the moment when the first piston 32a is located closest to the first stator 25a. At this time, by supplying electricity to the spark plug (not shown) and igniting, the mixer inside the compressed first chamber C1 is exploded and the first piston 32a is moved to the opposite side. This compression and explosion process is the same in the third chamber C3 facing diagonally.

In the process of moving the first piston 32a from the second stator 25b toward the first stator 25a, the combustion gas in the first chamber C1 is discharged to the outside through the first exhaust port 42a. The mixer in one corresponding chamber C1 'is compressed with the mixer introduced as described above. In other words, while the first chamber C1 serves as the expansion chamber, the first corresponding chamber C1 'becomes the contraction chamber. Therefore, although four cylinders are formed in the coaxial reciprocating engine of the present invention, the number of combustion chambers is eight, and the available volume is doubled.

Next, Figure 8 is an exploded perspective view showing the configuration of a coaxial reciprocating engine according to another embodiment of the present invention. In this embodiment, the housing assembly is compactly formed by integrally forming the first stator and the housing.

That is, a plurality of stators 225a to 225d are integrally formed inside the housing assembly 220, and then the plurality of pistons 32a to 32d which provide an expansion and contraction working chamber inside the housing assembly 220. The rotor 30 with was placed. In addition, the cover 250 is attached to the housing assembly 220 to seal the inner space of the cylinder. The flange 254 of the cover 250 is formed with a plurality of mounting holes 256 to be coupled to the mounting holes 224 formed in the flange 222 of the housing assembly 220, the output shaft 54a through the center Through holes 262 are formed. In addition, the cover 250 is provided with a plurality of intake ports 250a to 250d for supplying external air into the housing assembly 220 and a plurality of exhaust ports 252a to 252d for exhausting the combustion gas.

When assembling, the rotor 30 having a plurality of pistons is disposed inside the housing assembly 220 to cover the cover 250, and then mounting holes 224a and 156 formed in the flanges 222 and 224, respectively. ) Can be fixed by fastening an ordinary bolt.

Other components, such as guide rails 33 and 33 ', sliders 56 and 56', are similar to the structures described with reference to FIGS. 1 to 7 and thus description thereof will be omitted and denoted by the same numerals. It was. However, a plurality of fastening holes 264a to 264d are formed at the edge of the sealing body 260 for coupling with the fastening holes 226a to 226d formed on the stators 225a to 225d, and the output shaft 54a is formed at the center thereof. The point where the through-hole 262 is formed is different.

In this embodiment, the engine mounting rubber 230 for assembling a coaxial reciprocating engine having such a configuration is adopted. To this end, a bracket 228 having a mounting hole 228a is attached to the outer surface of the housing assembly 220. When the engine is assembled, a normal bolt is inserted into the mounting hole to fix the housing assembly 220 to the vehicle body frame. As a result, the vibration generated by the engine is absorbed to prevent transmission to the vehicle body. The engine mounting rubber 230 has a bracket 230b fixed to the vehicle body side, and a mounting hole 230a is formed in the bracket 230b.

9A and 9B are perspective views showing the lubrication structure formed on the stator and the piston according to another embodiment of the present invention, respectively, and the lower end of the stator 25a is pressed by the leaf spring 112 for lubrication of the stator and the piston. Lubrication roll 110 was built in the state, and the oil groove 114 was formed on the outer circumferential surface of the piston 32a.

In addition, oil is stored inside the body 31 of the rotor 30, and a plurality of oil holes 31b are formed on the outer circumferential surface thereof so that oil is supplied to the oil chamber 25a-1 formed at the bottom of the stator 25a. The supplied oil is supplied to the lubrication roll 110 as shown in an enlarged manner, and the leaf spring 112 is elastically deformed as shown in the imaginary line to smoothly rotate the lubrication roll 110. . The oil stored in the body 31 is also supplied to the piston 32a through the oil groove 114 to be in charge of lubrication.

According to the present invention described above, compared with the conventional reciprocating piston engine, firstly, since the crankshaft is not required, the weight can be reduced, and secondly, since the piston doubles as the reciprocating movement, the efficiency per volume is doubled. Third, the structure is simple because no camshaft and valve driving mechanism are required. Fourth, quiet operation is possible because there is no vibration caused by the crankshaft. Sixth, it is possible to expand the cylindrical cylinder assembly by the required multiple of two, so that the combustion chamber is highly expandable. Seventh, because the linear piston has a high output torque, and eighth, no inertia flywheel is required. Lightweight and quiet operation is possible. In addition, compared to the conventional coaxial reciprocating engine, there is an advantage that the output can be uniformly distributed at all times in a normal operating state.

Claims (8)

In a coaxial reciprocating engine which obtains power by causing expansion and contraction working chambers to be alternately formed in a cylinder formed between the stator and the stator while a plurality of pistons integrally formed on the outer circumference of the rotor move closer to or away from the stator, A first stator 20 composed of first and second circular plates 21 and 22 and having a plurality of stators 25a to 25d attached to the second circular plate 22, and third and fourth circular plates 23 and 24. And a second stator 20 'disposed to face the first stator 20 at predetermined intervals, and a housing 40 surrounding the first and second stators 20 and 20'. A plate 10 disposed outside the first stator 20 and a plurality of supports 11a to 11d are disposed to face the plate 10 to prevent the housing 40 from flowing. A housing assembly composed of a cover 80; A rotor (30) having a plurality of pistons (32a to 32d) mounted inside the housing assembly to form an expansion and contraction working chamber; Guide rails (33, 33 ') having guide grooves (33a, 33a') fixed to an inner surface of the rotor (30); Coaxial reciprocating means comprising a material joint means for transmitting the rotational movement of the rotor 30 transmitted through the guide rails (33, 33 ') to the output shaft (54a) through the drive shaft (52, 52') engine. The method of claim 1, A coaxial member, characterized in that a sealing body 60 having a through hole 63 through which the output shaft 54a penetrates in the center of the fourth circular plate 24 constituting the second stator 20 '. Type reciprocating engine. The method of claim 1, Flat ends 52a and 52a 'having fastening holes 52a-1 and 52a-1' are formed at both ends of the driving shafts 52 and 52 ', and are opposed to each other at a predetermined interval in the center. A coaxial reciprocating engine, characterized in that the bevel gears (53, 53 ') are arranged to be attached. The method of claim 1, The material joining means has sliders 56 and 56 'having balls 56a and 56a' formed at one end and guide slots 58 and 58 'moving up and down along the guide grooves 33a and 33a' at the other end. )Wow, At the bottom, sliders 55 and 55 'are formed into which the balls 56a and 56a' of the sliders 56 and 56 'are inserted, and extensions 57 and 57' extending from the sliders 55 and 55 '. The ball housings 55 and 55 are formed with fastening holes 57b and 57b 'which are rotatably coupled to the fastening holes 52a-1 and 52a-1' of the flat portions 52a and 52a 'by a hinge. Coaxial reciprocating engine, characterized in that consisting of. The method of claim 4, wherein Lubrication roll 110 is built in the lower end of the stator (25a to 25d) by the press spring 112, the oil groove 114 is formed on the outer peripheral surface of the piston (32a to 32d) Coaxial reciprocating engine, characterized in that. In a coaxial reciprocating engine which obtains power by causing expansion and contraction working chambers to be alternately formed in a cylinder formed between the stator and the stator while a plurality of pistons integrally formed on the outer circumference of the rotor move closer to or away from the stator, A plurality of stators 225a to 225d are attached to the inner wall, and a housing assembly 220 having a mounting hole 224 formed in the flange 222; A rotor (30) having a plurality of pistons (32a to 32d) mounted inside the housing assembly to form an expansion and contraction working chamber; A plurality of fastening holes 264a to 264d for engaging the stators 225a to 225d at an edge thereof, and a seal 262 having a through hole 262 through which the output shaft 54a is penetrated; The flange 250 has a mounting hole 256 coupled to the mounting hole 224 formed in the flange 222 of the housing assembly 220, and has a through hole 258 through which the output shaft 53a penetrates. A cover 250 having a plurality of intake ports 250a to 250c and exhaust ports 252a to 252d; Guide rails (33, 33 ') having guide grooves (33a, 33a') fixed to an inner surface of the rotor (30); Sliders 56 and 56 'which move up and down along the guide grooves 33a and 33a' of the guide rails 33 and 33 '; A coaxial reciprocating engine comprising a material joint means for transmitting the linear motion of the sliders 56, 56 'to the rotational motion of the drive shafts 52, 52' engaged with the output shaft 54a. The method of claim 6, Coaxial reciprocating engine, characterized in that the gasket 240 for sealingly coupling the cover 250 is fitted in the mounting hole 224 formed in the flange 222 of the housing assembly 220. The method of claim 6, A bracket 228 having a mounting hole 228a through which the fastening bolt penetrates is attached to the outer surface of the housing assembly 220 to fix the housing assembly 220 to the vehicle body frame through the engine mounting rubber 230. Coaxial reciprocating engine, characterized in that.