TW201925606A - Cylinder device characterized by using the accumulated eccentricity to make the internal gear generate a rotation for adjusting the movement stroke of an output portion of the output unit, thereby achieving the purpose of varying compression ratio or displacement - Google Patents

Abstract

Provided is a variable compression ratio/variable displacement device including: a driving member, a first eccentric unit, a second eccentric unit, an output unit, an internal gear ring member and an adjusting/positioning unit. When the driving member is activated, by using the accumulated eccentricity generated by the first eccentric unit and the second eccentric unit and by using the operation of the adjusting/positioning unit, the internal gear ring member can generate a rotation to adjust the movement stroke of an output portion of the output unit, thereby achieving the purpose of varying compression ratio or varying the displacement.

Description

Variable compression ratio/variable volume device

The present invention relates to an internal combustion engine, and more particularly to a variable compression ratio/variable volume device.

A variable length connecting rod and a variable compression ratio internal combustion engine disclosed in Japanese Patent Laid-Open No. I-568924, which is mainly provided with an eccentric member at one end of a connecting rod body, and the connecting rod can be rotated by the eccentric member. The effective length of the body, whereby the repeated movement of the piston can be adjusted.

Although the length of the link body can be changed by the above structure, and the compression ratio can be changed, it can only utilize the eccentric member to generate a relatively limited stroke adjustment amount at a certain amount of eccentricity, which cannot meet the demand for an internal combustion engine requiring a large stroke change.

Accordingly, it is an object of the present invention to provide a variable compression ratio/variable volume device that utilizes two eccentricities to accumulate eccentricity and that can adjust the compression stroke.

Thus, the variable compression ratio/variable volume device of the present invention comprises a driving member, a first eccentric unit, a second eccentric unit, an output unit, an internal ring gear member and an adjustment positioning unit. The driving member includes a power output shaft extending along a main axis and outputting rotational power, the first eccentric unit including a first wheel body fixed to the output shaft, and a first wheel body coupled to the first wheel body and opposite to the first wheel body The first wheel body is an eccentrically disposed linkage shaft, the linkage shaft extends along a first axis, the first axis is parallel and spaced apart from the main axis, and the second eccentric unit comprises a rotatably sleeved sleeve a second wheel body of the interlocking shaft, and a gear coupled to the second wheel body and disposed eccentrically with respect to the second wheel body, the second wheel body having an outer peripheral surface formed around a second axis The second axis is parallel and spaced apart from the first axis, the output unit has a collar portion rotatably sleeved on the second wheel body of the second eccentric unit, and a collar portion opposite to the collar portion An output portion that is linearly repetitively displaced along a radial direction perpendicular to the main axis, the inner ring member being positionable relative to the drive member for supporting the gear and having a centerline And can define an inner ring of the inner ring And an inner ring tooth disposed at a distance from the center line and disposed on the inner ring surface, the gear meshes with the inner ring teeth, and can be rotated along the inner ring teeth, and the adjustment positioning unit is disposed at The inner ring gear member is on one side, and the inner ring gear member is rotated by the center line as a center of rotation. When the inner ring gear member rotates, the inner ring gears move the gear, and the second wheel is rotated. The body rotates relative to the first eccentric unit with the first axis as a center of rotation, and the accumulated eccentric amount of the first and second eccentric units can be adjusted, and the rotated inner ring gear member is positioned relative to the driving member.

The effect of the invention is that the eccentricity is generated by the first eccentric unit and the second eccentric unit, and the eccentricity can be accumulated, the overall structure is simple, the manufacturing assembly is easy, and the adjustable compression stroke range is increased.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 to FIG. 3, a first embodiment of a variable compression ratio/variable volume device of the present invention includes a base 10, a cylinder block 20 mounted on the base 10, and a lock on the base. a driving member 30, a first eccentric unit 40 driven by the driving member 30, a second eccentric unit 50 coupled to the first eccentric unit 40, and an output unit 60 pivotally connected to the second eccentric unit 50 An inner ring gear member 70 disposed on one side of the second eccentric unit 50 and an adjustment positioning unit 80 adjacent to the inner ring gear member 70.

The base 10 has a top wall 11 and a peripheral wall 12 extending downward from the periphery of the top wall 11. The top wall 11 and the peripheral wall 12 together define a receiving space 13.

The cylinder block 20 is locked to the top wall 11 and positioned relative to the driving member 30, and has a cylinder chamber 21 communicating with the receiving space 13.

The driving member 30 of the embodiment is a motor and is locked to one side of the peripheral wall 12 of the base 10, and includes a power output shaft 31 extending along a main axis L0 and capable of outputting rotational power.

The first eccentric unit 40 includes a first wheel body 41 fixed to the output shaft 31, and a linkage shaft 42 connected to the first wheel body 41 and eccentrically disposed with respect to the first wheel body 41. The interlocking shaft 42 extends along a first axis L1 that is parallel and spaced apart from the main axis L0. A first eccentric amount e1 (eccentric) is formed between the first axis L1 and the main axis L0.

The second eccentric unit 50 includes a second wheel body 51 rotatably sleeved on the linkage shaft 42 , and a gear 52 connected to the second wheel body 51 and eccentrically disposed relative to the second wheel body 51 . And a bearing 53 for the second wheel body 51 to smoothly rotate with respect to the interlocking shaft 42. The second wheel body 51 has a shaft hole 511 disposed along the first axis L1 for mounting the bearings 53 and an outer peripheral surface 512 formed around a second axis L2. The second axis L2 and the first axis An axis L1 is parallel and spaced apart, and a second eccentric amount e2 is formed between the second axis L2 and the first axis L1. The gear 52 extends along a wheel axis L3 that is in line with the first axis L1.

The output unit 60 is a piston rod and has a collar portion 61 rotatably sleeved on the second wheel body 51 of the second eccentric unit 50, an output portion 62 opposite to the collar portion 61, and a bearing 63 mounted between the collar portion 61 and the outer peripheral surface 512 of the second wheel body 51, the output portion 62 being linearly repeated along a direction perpendicular to the main axis L0 and along the axial direction of the cylinder chamber 21. Displacement. The bearings 63 provide smooth rotation of the collar portion 61 relative to the second wheel body 51.

The inner ring member 70 is constrained by the adjusting and positioning unit 80 to be positioned relative to the driving member 30 and configured to support the gear 52. The inner ring member 70 has a first side 71 and a first opposite to the first The second side surface 72 of the side surface 71, an inner annular surface 73 surrounding a center line L0' and defining an inner hole 731, and an inner ring spaced around the center line L0' and disposed around the inner ring surface 73 a tooth 74, and a plurality of apertures 75 spaced around the centerline L0' and recessed by the first side 71 toward the second side 72. The gear 52 is engaged with the inner ring teeth 74 and The inner annulus 73 produces a swirl. In the present embodiment, the center line L0' of the inner ring gear member 70 is on the same straight line as the main axis L0 of the output shaft 31. In this embodiment, the number of the card holes 75 is twelve, and each of the two card holes 75 is separated by 30 degrees.

The adjustment positioning unit 80 of the present embodiment is a manual operation structure. The adjustment positioning unit 80 is locked in the receiving space 13 of the base 10 and disposed on one side of the internal ring gear member 70, and the inner ring gear member can be 70 is rotated by the center line L0' as a center of rotation. The adjustment positioning unit 80 has a positioning seat 81 locked to the peripheral wall 12 relative to the driving member 30, and a card screwed to the positioning seat 81. The locating member 81 has a positioning plate 811, a ferrule 812 which is fixed on the side of the positioning plate 811 along the main axis L0 (and the center line L0') and has a C shape, and a reverse The positioning plate 811 is fixed to the limiting plate 813 on the other side of the hoop plate 812. The positioning plate 811 has an eccentricity with respect to the main axis L0 (and the center line L0') and can correspond to any a screw hole 814 of the hole 75, the hoop plate 12 can define a pocket 815 having a perforation disposed along the main axis L0 (and the center line L0') and for the gear 52 to pass through 816. The clamping member 82 is in the shape of a bolt and is adjustably screwed into the screw hole 814. The locking member 82 can be locked or disengaged relative to one of the locking holes 75. The locking member 82 is opposite to the locking member 82. When a card hole 75 is jammed, the inner ring gear member 70 is positioned relative to the positioning seat 81. When the card member 82 is disengaged from one of the card holes 75, the inner ring gear member 70 can have the main axis L0. (The center line L0') is rotated relative to the positioning seat 81 for the center of rotation.

The reciprocating operation of the present invention is illustrated by the overall structural features of the above components:

As shown by the solid line curves of FIG. 4 and FIG. 10, the output unit 60 is shown to have a maximum compression ratio and the output portion 62 is located at a top dead center. At this time, the first axis L1 and the main axis L0 are formed. The first eccentric amount e1 and the sum of the second eccentric amount e2 formed between the second axis L2 and the first axis L1 are the largest, and the second axis L2 is located directly above the first axis L1. The first axis L1 is located directly above the main axis L0, the second axis L2, the first axis L1 and the main axis L0 are located on a reference line L. In this state, the inner ring gear 70 is defined as a Return to zero position.

As shown in the solid curve of FIG. 1, FIG. 2, FIG. 5 and FIG. 10, when the driving member 30 is activated and the output shaft 31 drives the first eccentric unit 40 to rotate, the interlocking shaft 42 will The main axis L0 is rotated for the center of rotation, the socket relationship between the linkage shaft 42 and the shaft hole 511 of the second wheel body 51, and the gear 52 is engaged with the inner ring gear 74 of the inner ring member 70. When the second wheel body 51 is driven by the interlocking shaft 42 and rotates (revolves) with the main axis L0 as a center of rotation, the second eccentric unit 50 as a whole also has the wheel center of the gear 52. The axis L3 (and the first axis L1) produces rotation. When the output shaft 31 of the driving member 30 continues to rotate, the second wheel body 51 can interlock the output portion 62 of the output unit 60 to generate linear repeated displacement along the axial direction of the cylinder chamber 21, and achieve the intended work purpose. On the other hand, the position of the output portion 62 in Fig. 5 is the bottom dead center corresponding to the solid line curve of Fig. 10.

The operation and operating state of the present invention for adjusting the compression ratio are as follows:

As shown in Figure 4, the inner ring gear 70 is shown in the home position.

As shown in FIG. 7 and with reference to FIG. 2 and FIG. 3, compared with FIG. 4, when the card member 82 is loosened and the card member 82 is separated from the card holes 75, the internal teeth can be operated. The ring member 70 is rotated 30 degrees in the counterclockwise direction of FIG. 7, and the rotation of the inner ring gear 74 can be used to rotate the gear 52 to rotate with its own wheel center axis L3 as a center of rotation, and the second wheel body 51 is rotated. Then, the first axis L1 is rotated as a center of rotation toward the left side (counterclockwise direction) of FIG. 7, and the second axis L2 is generated perpendicularly between a falling point P of the reference line L and the first axis L1. The distance is smaller than the second eccentric amount e2 formed between the second axis L2 and the first axis L1, so that the compression ratio of the output unit 60 becomes small. After the adjustment and operation of the clamping member 82 is nested in the corresponding card hole 75, the inner ring gear member 70 can be positioned relative to the positioning seat 81.

As shown in FIG. 8, compared with FIG. 4, when the inner ring gear member 70 is rotated 60 degrees in the counterclockwise direction of FIG. 8, the second axis L2 is perpendicular to the same operational relationship as in the above FIG. A drop point P of the reference line L is located between the main axis L0 and the first axis L1, so that the compression ratio of the output unit 60 becomes smaller than that of FIG.

Further, as shown in FIG. 9, compared with FIG. 4, when the inner ring gear member 70 is rotated 90 degrees counterclockwise in FIG. 9, the second axis L2 is falling in the same operational relationship as in FIG. On the reference line L, the second axis L2 is located between the main axis L0 and the first axis L1, so that the compression ratio of the output unit 60 can be minimized. Further, as shown by the broken line curve of FIG. 10, when the driving member 30 is activated, the output portion 62 has a minimum compression stroke between the upper and lower dead points.

As shown in FIG. 6 and with reference to FIG. 1 and FIG. 2, even if the inner ring gear member 70 is rotated by 15 degrees, and the card member 82 is positioned between the two card holes 75, the card member 82 is utilized. The urging force of the first side 71 of the inner ring member 70 also causes the inner ring member 70 to be positioned relative to the locating seat 81. However, if the positioning effect is increased, the number of the card holes 75 can be increased to 24, so that each of the two card holes 75 is separated by 15 degrees (not shown).

Therefore, the present invention utilizes the cooperation of the first eccentric unit 40, the second eccentric unit 50, the internal ring gear member 70 and the adjustment positioning unit 80, and utilizes the inner ring when the inner ring gear member 70 is rotated. The first eccentric unit 40 and the second eccentricity 40 can be adjusted by rotating the gear wheel 52 and rotating the second wheel body 51 relative to the first eccentric unit 40 with the first axis L1 as a center of rotation. The eccentric amount of the unit 50 is accumulated, and the adjusted positioning unit 80 can be used to position the rotated inner ring member 70 relative to the positioning seat 81 (the driving member 30) to facilitate the normal operation of the output unit 60. .

11 and FIG. 12, the second embodiment of the present invention is substantially the same as the first embodiment, except that the inner ring member 70' further has a center line L0' (cum main axis L0). And opposite to the outer annular surface 76' of the inner annular surface 73', and a plurality of worm gear teeth 77' disposed on the outer annular surface 76' and arranged around the center line L0', the adjustment positioning unit 80' is electrically controlled. And a positioning seat 81' that is positioned relative to the driving member 30 and locked on the base 10, a worm 82' rotatably shafted on the positioning seat 81', and a locomotive 81 is mounted on the positioning seat 81. And an adjustment motor 83' that can drive the worm 82' to rotate, the positioning seat 81' has a pocket 815' for the inner ring member 70' to be rotatably sleeved, and a portion of the worm gear 77' and the worm 82' produces meshing.

When the adjustment motor 83' is activated, the inner ring gear member 70' can be rotated by the worm 82' with the center line L0' (main axis L0) as a center of rotation. And can produce the effect of no adjustment of the compression ratio.

In summary, the variable compression ratio/variable volume device of the present invention has a simple overall structure and is easy to manufacture and can achieve the object of the present invention.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

10‧‧‧ machine base

11‧‧‧ top wall

12‧‧‧Wall

13‧‧‧Accommodation space

20‧‧‧Cylinder block

21‧‧‧Cylinder room

30‧‧‧ Drives

31‧‧‧Output shaft

40‧‧‧First eccentric unit

41‧‧‧First round body

42‧‧‧ linkage shaft

50‧‧‧Second eccentric unit

51‧‧‧Second round body

511‧‧‧Axis hole

512‧‧‧ outer perimeter

52‧‧‧ Gears

53‧‧‧ bearing axis

60‧‧‧Output unit

61‧‧‧Rings

62‧‧‧Output Department

63‧‧‧ bearing

70‧‧‧ internal tooth ring

71‧‧‧ first side

72‧‧‧ second side

731‧‧‧ 内孔

73‧‧‧ Inner torus

74‧‧‧ Inner ring teeth

75‧‧‧Kakong

80‧‧‧Adjustment positioning unit

81‧‧‧ Positioning Block

811‧‧‧ positioning board

812‧‧‧Hoop board

813‧‧‧Limited board

814‧‧‧ screw hole

815‧‧‧ 容容

816‧‧‧Perforation

82‧‧‧Card parts

L0‧‧‧ main axis

L1‧‧‧first axis

L2‧‧‧second axis

L3‧‧‧ wheel center axis

L0’‧‧‧ center line

L‧‧‧ baseline

E1‧‧‧First eccentricity

E2‧‧‧Second eccentricity

70'‧‧‧ internal tooth ring

73’‧‧‧ Inner torus

76’‧‧‧Outer Torus

77’‧‧‧ worm gear teeth

80’‧‧‧Adjustment positioning unit

81’‧‧‧ Positioning Block

815’‧‧‧ 容容

82’‧‧‧ worm

83’‧‧•Adjustment motor

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a perspective exploded view of a first embodiment of a variable compression ratio/variable volume device of the present invention; 2 is a combined sectional view of the first embodiment; FIG. 3 is an incomplete planar exploded view of the embodiment, illustrating a first eccentric unit, a second eccentric unit and an internal ring member; A cross-sectional view along line IV-IV in FIG. 2 illustrates an output unit having a maximum compression ratio and an output portion at a top dead center. FIG. 5 is a schematic diagram of the operation of the first embodiment, illustrating the output unit. Having the maximum compression ratio and the output portion is at the bottom dead center; FIG. 6 is an operation diagram similar to adjusting the compression ratio in FIG. 4, illustrating that rotating the inner ring gear 15 degrees counterclockwise can make the compression ratio of the output unit smaller; Figure 7 is a schematic view similar to the operation of adjusting the compression ratio of Figure 4, illustrating that turning the inner ring gear 30 degrees counterclockwise can make the compression ratio of the output unit smaller; Figure 8 is another adjustment similar to Figure 4. Operating diagram of compression ratio, description When the hour hand rotates the inner ring member 60 degrees, the compression ratio of the output unit can be made smaller; FIG. 9 is an operation diagram similar to FIG. 4, which further adjusts the compression ratio, and shows that the inner ring gear member can be rotated 90 degrees counterclockwise. The output unit has a minimum compression ratio; FIG. 10 is a comparison table of the operation trajectories of the output unit of the first embodiment at the maximum compression ratio and the minimum compression ratio; FIG. 11 is a variable compression ratio/variable volume device of the present invention. An exploded perspective view of the second embodiment; and Fig. 12 is a combined sectional view of the second embodiment.

Claims (9)

A variable compression ratio/variable volume device includes: a driving member including a output shaft extending along a main axis and capable of outputting rotational power; a first eccentric unit including a first fixed to the output shaft a wheel body, and a linkage shaft connected to the first wheel body and disposed eccentrically with respect to the first wheel body, the linkage shaft extending along a first axis, the first axis being parallel and spaced from the main axis a second eccentric unit includes a second wheel body rotatably sleeved on the linkage shaft, and a gear coupled to the second wheel body and disposed eccentrically with respect to the second wheel body, The second wheel body has an outer peripheral surface formed around a second axis, the second axis is parallel and spaced apart from the first axis; an output unit having a rotatably sleeved on the second eccentric unit a collar portion on the second wheel body, and an output portion opposite to the collar portion, the output portion being capable of linearly repeating displacement along a radial direction perpendicular to the main axis; an internal ring gear member relative to the The drive member generates a position and is used to support the a wheel having an inner annulus surrounding a centerline and defining an inner bore, and an inner ring tooth disposed at a distance from the centerline and annularly disposed on the inner annular surface, the gear meshing with the inner ring a tooth, and a rotation along the inner ring surface; and an adjustment positioning unit disposed on one side of the inner ring gear member, and the inner ring gear member is rotated by the center line as a center of rotation, the inner tooth When the ring member rotates, the inner ring teeth sway the gear, and the second wheel body rotates relative to the first eccentric unit with the first axis as a center of rotation, and the accumulation of the first and second eccentric units can be adjusted. The eccentric amount, the rotated inner ring gear member is positioned relative to the drive member. The variable compression ratio/variable volume device of claim 1, wherein the adjustment positioning unit has a positioning seat that generates positioning with respect to the driving member, and a clamping member mounted to the positioning seat, the positioning The seat has a pocket for rotatably sleeved the inner ring member, the inner ring member having a first side, a second side opposite the first side along the major axis, and a majority surrounding the spindle a card hole disposed at a spacing from the first side toward the second side, the card member being capable of being engaged or disengaged relative to one of the card holes, the card member being engaged with respect to one of the card holes The inner ring gear member is positioned relative to the positioning seat. When the clamping member is disengaged from one of the latching holes, the inner ring gear member can rotate relative to the positioning seat with the main axis as a center of rotation. The variable compression ratio/variable volume device of claim 2, wherein the positioning seat of the adjusting positioning unit has a positioning plate, and a C-shaped hoop fixed to one side of the positioning plate along the main axis. a plate, and a limiting plate opposite to the positioning plate and fixed on the other side of the clamping plate, the positioning plate has a screw hole eccentrically disposed with respect to the main axis and corresponding to any of the card holes, The ferrule may define the accommodating plate, and the limiting plate has a through hole disposed along the main axis and provided for the gear. The engaging member has a bolt shape and is adjustably screwed into the screw hole. The variable compression ratio/variable volume device of claim 1, wherein the second wheel body of the second eccentric unit has a shaft hole disposed along the first axis, and the second eccentric unit further has at least one A bearing mounted in the shaft hole and for smoothly rotating the second wheel body relative to the linkage shaft. The variable compression ratio/variable volume device of claim 1, further comprising a cylinder block that is positioned relative to the driving member and defines a cylinder chamber, the output unit being a piston rod, the output portion being along The cylinder chamber produces a reciprocating displacement. The variable compression ratio/variable volume device of claim 5, wherein the output unit further has at least one bearing mounted between the collar portion and the second wheel body. The variable compression ratio/variable volume device of claim 1, wherein the adjustment positioning unit has a positioning seat that is positioned relative to the driving member, a worm that is rotatably shaft-mounted on the positioning seat, and a An adjustment motor mounted on the positioning seat and capable of driving the worm to rotate, the positioning seat having a cavity for rotatably sleeved the inner ring member, the inner ring member further having a main axis and opposite to An outer annular surface of the inner annular surface, and a plurality of worm gear teeth disposed on the outer annular surface and arranged around the main axis, and the partial worm gear teeth mesh with the worm, and the adjusting motor is activated to drive the inner tooth through the worm The ring member rotates with the main axis as a center of rotation. The variable compression ratio/variable volume device of claim 1, wherein the center line of the inner ring member is in line with the main axis of the output shaft. The variable compression ratio/variable volume device of claim 1, wherein the gear of the second eccentric unit extends along a hub axis that is in line with the first axis.